技术领域Technical Field
本发明涉及单晶硅生产制造领域，更具体地，涉及一种大容量料桶以及单晶硅的生产方法。The present invention relates to the field of single crystal silicon production and manufacturing, and more specifically, to a large-capacity material barrel and a method for producing single crystal silicon.
背景技术Background technique
直拉单晶法是单晶硅的主要制作方法，随着光伏行业的快速发展，对单晶硅棒的需求与日俱增，为提高单晶硅棒的产能，行业内在不断应用更大的坩埚、更多的投料量以及更多的拉晶轮次。The direct-pulling method is the main method for producing monocrystalline silicon. With the rapid development of the photovoltaic industry, the demand for monocrystalline silicon rods is increasing day by day. In order to increase the production capacity of monocrystalline silicon rods, the industry is constantly using larger crucibles, more feed amounts and more crystal pulling rounds.
目前，现有技术中的上料方式由于须通过单晶炉副室抽空和硅料净化，所以料桶受限于单晶炉副室尺寸，单次投料最多约130kg，而一锅需要的投料量为800kg-1100kg，一锅料需要投加6-7次，投料效率低，劳动强度大。At present, the feeding method in the existing technology requires evacuation of the single crystal furnace sub-chamber and purification of the silicon material, so the material barrel is limited by the size of the single crystal furnace sub-chamber. The maximum amount of material that can be fed at a time is about 130kg, while the required feeding amount for a pot is 800kg-1100kg. A pot of material needs to be fed 6-7 times, with low feeding efficiency and high labor intensity.
因此，亟需提供一种单次投料量大，上料方式不受限于单晶炉副室尺寸的大容量料桶以及单晶硅的生产方法。Therefore, there is an urgent need to provide a large-capacity material barrel and a method for producing single crystal silicon with a large single-time feeding amount and a feeding method that is not limited by the size of the single crystal furnace sub-chamber.
发明内容Summary of the invention
有鉴于此，本发明提供了一种大容量料桶以及单晶硅的生产方法。In view of this, the present invention provides a large-capacity material barrel and a method for producing single crystal silicon.
一方面，本发明提供了一种大容量料桶，其特征在于，包括：In one aspect, the present invention provides a large-capacity material barrel, characterized in that it comprises:
外壳，外壳设置装料口；A shell, wherein the shell is provided with a charging port;
内胆，内胆紧贴外壳的内壁设置；An inner liner is arranged close to the inner wall of the outer shell;
隔离桶，设置于内胆内，隔离桶的底端与内胆接触，隔离桶沿第一方向升降；An isolation barrel is disposed in the inner tank, the bottom end of the isolation barrel contacts the inner tank, and the isolation barrel rises and falls along a first direction;
内料桶，设置于隔离桶内，内料桶沿第一方向升降；An inner barrel is disposed in the isolation barrel, and the inner barrel is raised and lowered along a first direction;
内料桶的底部设置底锥，底锥沿第一方向升降；第一方向为外壳的顶部指向底锥的方向。A bottom cone is arranged at the bottom of the inner barrel, and the bottom cone rises and falls along a first direction; the first direction is the direction in which the top of the outer shell points to the bottom cone.
可选的，外壳包括依次连接的第一壳体、第二壳体、第三壳体和顶盖，隔离桶靠近第三壳体的一侧设置隔离桶升降杆，隔离桶升降杆与隔离桶升降电机的输出轴连接，隔离桶升降电机设置于顶盖上。Optionally, the outer shell includes a first shell, a second shell, a third shell and a top cover which are connected in sequence, and an isolation barrel lifting rod is arranged on the side of the isolation barrel close to the third shell, the isolation barrel lifting rod is connected to the output shaft of the isolation barrel lifting motor, and the isolation barrel lifting motor is arranged on the top cover.
可选的，内料桶的顶部设置料桶连杆，料桶连杆的另一端连接识别环，识别环与推动环通过滑杆连接，推动环沿滑杆滑动，滑杆上套设弹簧；推动环的中心设置推动螺母；推动螺母与料桶升降丝杆啮合，料桶升降丝杆设置于内料桶内，与料桶升降电机连接，料桶升降电机设置于顶盖上。Optionally, a barrel connecting rod is set on the top of the inner barrel, and the other end of the barrel connecting rod is connected to the identification ring. The identification ring is connected to the push ring through a sliding rod. The push ring slides along the sliding rod, and a spring is sleeved on the sliding rod. A pushing nut is set at the center of the push ring. The pushing nut engages with the barrel lifting screw rod. The barrel lifting screw rod is set in the inner barrel and connected to the barrel lifting motor. The barrel lifting motor is set on the top cover.
可选的，底锥与底锥升降杆连接，底锥升降杆与推动环固定连接，底锥升降杆外设置隔离管，隔离管一端连接推动环，另一端连接底锥。Optionally, the bottom cone is connected to the bottom cone lifting rod, the bottom cone lifting rod is fixedly connected to the push ring, an isolation tube is arranged outside the bottom cone lifting rod, one end of the isolation tube is connected to the push ring, and the other end is connected to the bottom cone.
可选的，底锥升降杆包括沿第一方向连接的第一段和第二段，料桶升降丝杆设置于第一段内，与第二段紧固连接。Optionally, the bottom cone lifting rod includes a first section and a second section connected along a first direction, and the barrel lifting screw is arranged in the first section and is tightly connected to the second section.
可选的，隔离管与底锥升降杆沿第一方向的长度相等。Optionally, the lengths of the isolation tube and the bottom cone lifting rod along the first direction are equal.
可选的，内料桶和隔离桶之间设置限位环，限位环靠近第一壳体一侧与外壳连接。Optionally, a limiting ring is provided between the inner material barrel and the isolation barrel, and the limiting ring is connected to the outer shell at a side close to the first shell.
可选的，内料桶还包括内装料口，内装料口由内料桶的桶壁延伸至外壳的外侧。Optionally, the inner barrel further includes an inner loading port, which extends from the barrel wall of the inner barrel to the outside of the outer shell.
可选的，限位环远离第一壳体一侧设置沿第一方向延伸的限位杆，限位杆的一端与顶盖连接。Optionally, a limiting rod extending along the first direction is provided on a side of the limiting ring away from the first shell, and one end of the limiting rod is connected to the top cover.
另一方面，本发明还提供了一种单晶硅的生产方法，包括上料过程，上料过程包括：On the other hand, the present invention also provides a method for producing single crystal silicon, including a loading process, the loading process comprising:
将大容量料桶移至单晶炉的炉台上，外壳与炉台接触；单晶炉还包括坩埚；The large-capacity material barrel is moved to the furnace table of the single crystal furnace, and the outer shell is in contact with the furnace table; the single crystal furnace also includes a crucible;
坩埚设置于炉台内，炉台翻板阀设置于炉台开口处；The crucible is arranged in the furnace platform, and the furnace platform flap valve is arranged at the opening of the furnace platform;
向内胆与隔离桶形成的外仓内加入硅料；向内料桶形成的内仓内加入硅料；Add silicon material into the outer bin formed by the inner tank and the isolation barrel; add silicon material into the inner bin formed by the inner barrel;
内料桶下降伸入坩埚内；The inner barrel descends and extends into the crucible;
隔离桶上升，外仓与内仓连通；The isolation barrel rises, and the outer chamber is connected with the inner chamber;
底锥下降，硅料由底锥流入坩埚内；The bottom cone descends, and the silicon material flows into the crucible from the bottom cone;
底锥上升，内料桶上升，隔离桶下降。The bottom cone rises, the inner material barrel rises, and the isolation barrel falls.
与现有技术相比，本发明提供的一种大容量料桶以及单晶硅的生产方法，至少实现了如下的有益效果：Compared with the prior art, the large-capacity material barrel and the method for producing single crystal silicon provided by the present invention achieve at least the following beneficial effects:
本发明提供的一种大容量料桶，包括外壳、内胆、隔离桶、内料桶；外壳设置装料口，便于硅料装入料桶内；紧贴外壳的内壁设置内胆，内胆对料桶内部有一定保护作用且形成一定空间容纳硅料；隔离桶设置于内胆内，底端与内胆接触，增加料桶稳定性；隔离桶沿第一方向升降，实现内仓与外仓的连通；内料桶设置于隔离桶内，沿第一方向升降，内料桶可实现伸入单晶炉内直接上料；内料桶的底部设置底锥，底锥沿第一方向下降，打开料桶，底锥沿第一方向升起，料桶关闭实现料桶为独立密封罐体，保证装入料桶的硅料避免与空气接触，加料过程内料桶可伸入单晶炉内加料，不再受单晶炉副室形状的限制，可以直接与单晶炉连接后进行硅料的抽空净化，节约抽空时间和氩气消耗；本发明提供的单晶硅的生产方法通过料桶直接与单晶炉的炉台连接，加料时，内料桶升入炉台内，隔离桶升起，将内仓与外仓连通，底锥下降，即可将内仓与外仓内的硅料全部加入单晶炉内，实现单次投料量可达现有料桶的3倍左右，减少了加料次数，减少了炉台的打开次数，利于炉台保温，缩短熔料时间，降低能耗。The present invention provides a large-capacity barrel, comprising an outer shell, an inner liner, an isolation barrel and an inner barrel; the outer shell is provided with a loading port to facilitate the loading of silicon material into the barrel; the inner liner is arranged close to the inner wall of the outer shell, the inner liner has a certain protective effect on the inside of the barrel and forms a certain space to accommodate the silicon material; the isolation barrel is arranged in the inner liner, and the bottom end is in contact with the inner liner to increase the stability of the barrel; the isolation barrel is lifted and lowered along a first direction to realize the connection between the inner bin and the outer bin; the inner barrel is arranged in the isolation barrel and lifted and lowered along the first direction, and the inner barrel can be extended into the single crystal furnace for direct loading; a bottom cone is arranged at the bottom of the inner barrel, the bottom cone descends along the first direction, the barrel is opened, the bottom cone rises along the first direction, and the barrel is closed to realize that the barrel is an independent sealed tank body, It is ensured that the silicon material loaded into the material barrel avoids contact with the air. During the feeding process, the inner material barrel can be extended into the single crystal furnace for feeding, and is no longer restricted by the shape of the single crystal furnace sub-chamber. It can be directly connected to the single crystal furnace to evacuate and purify the silicon material, saving evacuation time and argon gas consumption. The single crystal silicon production method provided by the present invention is directly connected to the furnace table of the single crystal furnace through the material barrel. When feeding, the inner material barrel is raised into the furnace table, the isolation barrel is raised, the inner bin is connected with the outer bin, and the bottom cone is lowered, so that all the silicon materials in the inner bin and the outer bin can be added to the single crystal furnace, and the single feeding amount can reach about 3 times of the existing material barrel, which reduces the number of feeding times and the number of times the furnace table is opened, which is beneficial to the insulation of the furnace table, shortens the melting time, and reduces energy consumption.
当然，实施本发明的任一产品必不特定需要同时达到以上所述的所有技术效果。Of course, any product implementing the present invention does not necessarily need to achieve all of the technical effects described above at the same time.
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得清楚。Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
被结合在说明书中并构成说明书的一部分的附图示出了本发明的实施例，并且连同其说明一起用于解释本发明的原理。The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
图1是本发明提供的大容量料桶沿第一方向的截面结构示意图；FIG1 is a schematic diagram of a cross-sectional structure of a large-capacity material barrel provided by the present invention along a first direction;
图2是图1中E处的放大示意图；FIG2 is an enlarged schematic diagram of point E in FIG1 ;
图3是底锥关闭时内料桶沿第一方向的截面结构示意图；FIG3 is a schematic diagram of the cross-sectional structure of the inner barrel along a first direction when the bottom cone is closed;
图4是底锥打开时内料桶沿第一方向的截面结构示意图；FIG4 is a schematic diagram of the cross-sectional structure of the inner barrel along a first direction when the bottom cone is opened;
图5是本发明提供的大容量料桶与单晶炉连接的结构示意图；5 is a schematic structural diagram of the connection between a large-capacity material barrel and a single crystal furnace provided by the present invention;
图6是本发明提供的单晶硅的生产方法上料过程大容量料桶与单晶炉连接的一种结构示意图；6 is a schematic diagram of a structure in which a large-capacity material bucket is connected to a single crystal furnace during a material loading process of a single crystal silicon production method provided by the present invention;
图7是本发明提供的单晶硅的生产方法上料过程大容量料桶与单晶炉连接的另一种结构示意图；7 is another schematic diagram of the structure of connecting a large-capacity material bucket and a single crystal furnace in the feeding process of the production method of single crystal silicon provided by the present invention;
图8是图7中C处的放大示意图。FIG. 8 is an enlarged schematic diagram of point C in FIG. 7 .
1-内料桶、2-外壳、21-第一壳体、22-第二壳体、23-第三壳体、24-顶盖、25-装料口、3-内胆、4-料桶升降丝杆、5-限位环、6-底锥升降杆、61-第一段、62-第二段、7-底锥、8-隔离桶、81-底端、9-料桶连杆、10-识别环、11-弹簧、12-推动环、13-推动螺母、14-隔离管、15-料桶升降电机、16-密封环、17-隔离桶升降杆、18-隔离桶升降电机、19-滑杆、20-限位杆、26-单晶炉、261-炉台、262-坩埚、263-炉台翻板阀、外仓-A、内仓-B、第一方向-y。1-inner barrel, 2-outer shell, 21-first shell, 22-second shell, 23-third shell, 24-top cover, 25-charging port, 3-inner liner, 4-barrel lifting screw, 5-limiting ring, 6-bottom cone lifting rod, 61-first section, 62-second section, 7-bottom cone, 8-isolation barrel, 81-bottom end, 9-barrel connecting rod, 10-identification ring, 11-spring, 12-push ring, 13-push nut, 14-isolation tube, 15-barrel lifting motor, 16-sealing ring, 17-isolation barrel lifting rod, 18-isolation barrel lifting motor, 19-sliding rod, 20-limiting rod, 26-single crystal furnace, 261-furnace table, 262-crucible, 263-furnace table flap valve, outer warehouse-A, inner warehouse-B, first direction-y.
具体实施方式Detailed ways
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.
结合(参照)图1至图8，一方面，本发明提供了一种大容量料桶，包括：In conjunction with (with reference to) FIGS. 1 to 8 , on the one hand, the present invention provides a large-capacity material barrel, comprising:
外壳2，外壳2设置装料口25；The housing 2 is provided with a charging port 25;
内胆3，内胆3紧贴外壳2的内壁设置；The inner liner 3 is arranged close to the inner wall of the outer shell 2;
隔离桶8，设置于内胆3内，隔离桶8的底端81与内胆3接触，隔离桶8沿第一方向y升降，；The isolation barrel 8 is disposed in the inner container 3, the bottom end 81 of the isolation barrel 8 is in contact with the inner container 3, and the isolation barrel 8 is lifted and lowered along the first direction y;
内料桶1，设置于隔离桶8内，内料桶1沿第一方向y升降；The inner barrel 1 is disposed in the isolation barrel 8, and the inner barrel 1 is lifted and lowered along the first direction y;
内料桶1的底部设置底锥7，底锥7沿第一方向y升降；第一方向y为外壳2的顶部指向底锥7的方向。A bottom cone 7 is provided at the bottom of the inner barrel 1 , and the bottom cone 7 rises and falls along a first direction y; the first direction y is the direction from the top of the outer shell 2 to the bottom cone 7 .
具体的，本发明提供了一种大容量料桶，包括：外壳2外侧左右两边各设置一个装料口25，可快速装入硅料；内胆3紧贴外壳2的内壁设置，保护硅料；隔离桶8设置于内胆3内，底端81与内胆3接触，可实现内胆3围设形成的空间与内料桶1之间分隔；隔离桶8沿第一方向y升降，可实现内料桶1内空间与内胆3形成的空间之间连通；内料桶1，设置于隔离桶8内，沿第一方向y升降，可将硅料直接送入单晶炉26内，内料桶1与外壳2的底部设置的密封环16紧贴，在内料桶1沿第一方向y的升降过程中，密封环16起到保护作用；内料桶1的底部设置底锥7，底锥7沿第一方向y升降，实现整个料桶的封闭和打开。Specifically, the present invention provides a large-capacity material barrel, comprising: a loading port 25 is respectively arranged on the left and right sides of the outer side of the outer shell 2, so that silicon material can be quickly loaded; the inner liner 3 is arranged close to the inner wall of the outer shell 2 to protect the silicon material; the isolation barrel 8 is arranged in the inner liner 3, and the bottom end 81 is in contact with the inner liner 3, so that the space formed by the inner liner 3 and the inner material barrel 1 can be separated; the isolation barrel 8 is lifted and lowered along the first direction y, so that the space in the inner material barrel 1 and the space formed by the inner liner 3 can be connected; the inner material barrel 1 is arranged in the isolation barrel 8, and is lifted and lowered along the first direction y, so that the silicon material can be directly sent into the single crystal furnace 26, and the inner material barrel 1 is in close contact with the sealing ring 16 arranged at the bottom of the outer shell 2, and the sealing ring 16 plays a protective role during the lifting and lowering process of the inner material barrel 1 along the first direction y; the bottom cone 7 is arranged at the bottom of the inner material barrel 1, and the bottom cone 7 is lifted and lowered along the first direction y to realize the closing and opening of the entire material barrel.
需要说明的是，外壳2为密封结构，由金属(如不锈钢)材质制成，金属材质强度大，可以提供足够的支撑强度，增加料桶的稳定性以及密闭性；内胆3紧贴外壳2的内壁设置由非金属材料(如PTFE)制成，具有很高的抗腐蚀性，可以起到保护硅料的作用；第一壳体21的底端靠近内料桶1的位置设置有凹槽，凹槽内设置密封环16，密封环16与内料桶1的外壁紧密贴合，密封环16的设置可以提高料桶的密闭性，同时还可以保护内料桶1，内料桶1可在密封圈16内部沿第一方向y移动，避免对金属材质的内料桶1过度刮蹭，延长使用寿命。It should be noted that the outer shell 2 is a sealed structure and is made of metal (such as stainless steel). The metal material is strong and can provide sufficient supporting strength to increase the stability and airtightness of the barrel. The inner liner 3 is arranged close to the inner wall of the outer shell 2 and is made of non-metallic material (such as PTFE). It has high corrosion resistance and can protect the silicon material. A groove is arranged at the bottom end of the first shell 21 near the inner barrel 1. A sealing ring 16 is arranged in the groove. The sealing ring 16 fits tightly with the outer wall of the inner barrel 1. The setting of the sealing ring 16 can improve the airtightness of the barrel and protect the inner barrel 1. The inner barrel 1 can move along the first direction y inside the sealing ring 16 to avoid excessive scratching of the metal inner barrel 1 and extend its service life.
可选的，外壳2可以是上大下小的形状，第一壳体21的沿第一方向的截面可以是上大下小的倒锥形，倒锥形的形状设计可以保证外壳2内设置内胆3后与内料桶1更贴合的适应性安装，提高料桶的密闭性，避免发生硅料泄露的情况，保护桶内硅料。Optionally, the outer shell 2 can be in a shape that is larger at the top and smaller at the bottom, and the cross-section of the first shell 21 along the first direction can be in an inverted cone that is larger at the top and smaller at the bottom. The inverted cone shape design can ensure that after the inner liner 3 is set in the outer shell 2, it can be more adaptably installed with the inner barrel 1, thereby improving the airtightness of the barrel, avoiding leakage of silicon material, and protecting the silicon material in the barrel.
可选的，底锥7可以为锥形，锥形设计在内料桶1封闭时，即底锥7部分位于内料桶1内节省占用空间，使内料桶1可以容纳更多的硅料；在内料桶1打开，底锥7下降至单晶炉26内，硅料沿着底锥7四周流入坩埚262时，锥形设计为硅料提供一定缓冲坡段，加快硅料流速，节省时间。Optionally, the bottom cone 7 can be conical. When the inner barrel 1 is closed, the bottom cone 7 is partially located inside the inner barrel 1 to save space, so that the inner barrel 1 can accommodate more silicon material. When the inner barrel 1 is opened and the bottom cone 7 descends into the single crystal furnace 26, the silicon material flows into the crucible 262 along the four sides of the bottom cone 7. The conical design provides a certain buffer slope for the silicon material, thereby speeding up the flow rate of the silicon material and saving time.
可以理解的是，外壳2设置装料口25，便于硅料装入料桶内；紧贴外壳2的内壁设置内胆3，对料桶内部有一定保护作用且形成一定空间容纳硅料；隔离桶8设置于内胆3内，隔离桶8的底端81与内胆3接触，增加料桶稳定性；It can be understood that the outer shell 2 is provided with a loading port 25 to facilitate the loading of silicon material into the barrel; the inner liner 3 is arranged close to the inner wall of the outer shell 2, which has a certain protective effect on the inside of the barrel and forms a certain space to accommodate the silicon material; the isolation barrel 8 is arranged in the inner liner 3, and the bottom end 81 of the isolation barrel 8 is in contact with the inner liner 3 to increase the stability of the barrel;
内料桶1下降伸入单晶炉26内，隔离桶8沿第一方向y上升，实现内仓B与外仓A的连通；在内仓B与外仓A内的硅料全部加入坩埚261中后，内料桶1和底锥7升起后，隔离桶8沿第一方向y下降至底端81与内胆3接触；The inner material barrel 1 descends and extends into the single crystal furnace 26, and the isolation barrel 8 rises along the first direction y to achieve the connection between the inner bin B and the outer bin A; after all the silicon materials in the inner bin B and the outer bin A are added to the crucible 261, the inner material barrel 1 and the bottom cone 7 rise, and the isolation barrel 8 descends along the first direction y to the bottom end 81 to contact the inner tank 3;
内料桶1设置于隔离桶8内，加料时，料桶与单晶炉26连接后，内料桶1沿第一方向y下降，内料桶1的底部设置底锥7，内料桶1伸入单晶炉26内，底锥7沿第一方向y下降，实现内料桶1打开，内仓B与外仓A的硅料从底锥7处流入单晶炉26内，实现单次投料量可达现有料桶的3倍左右，相比于现有技术多次投料，本发明提供的料桶减少加料次数，减少炉台261的打开次数，利于炉台261保温，缩短熔料时间，降低能耗；The inner barrel 1 is arranged in the isolation barrel 8. When feeding, after the barrel is connected to the single crystal furnace 26, the inner barrel 1 descends along the first direction y. A bottom cone 7 is arranged at the bottom of the inner barrel 1. The inner barrel 1 extends into the single crystal furnace 26. The bottom cone 7 descends along the first direction y to open the inner barrel 1. The silicon materials in the inner bin B and the outer bin A flow into the single crystal furnace 26 from the bottom cone 7. The single feeding amount can reach about 3 times that of the existing barrel. Compared with the multiple feeding in the prior art, the barrel provided by the present invention reduces the number of feeding times and the number of times the furnace table 261 is opened, which is beneficial to the insulation of the furnace table 261, shortens the melting time, and reduces energy consumption.
待硅料全部流出后，底锥7沿第一方向y上升，内料桶1闭合，内料桶1沿第一方向y上升直至内料桶1全部位于外壳2内，隔离桶8沿第一方向y下降，内仓A与外仓B分隔，保证下一次硅料加入到料桶后，内仓A与外仓B的隔离作用；隔离桶8与底锥7的设置，实现料桶为独立密封罐体，保证内料桶1的顺利升降，加料时由于料桶可直接与单晶炉炉台261连接，进行硅料的抽空净化，不需伸入单晶炉26副室中，所以料桶的加料方式也不再受单晶炉26副室形状的限制，同时可以节约抽空时间，提升加料的自动化程度，降低了氩气的消耗，节约成本；料桶在上料时不再通过重锤提升，不再需要对换籽晶夹头和料筒吊环来回切换安装，简化了加料步骤，延长了籽晶夹头的使用寿命，提高加料工序的自动化水平。After all the silicon material has flowed out, the bottom cone 7 rises along the first direction y, the inner barrel 1 is closed, and the inner barrel 1 rises along the first direction y until the inner barrel 1 is completely located in the outer shell 2, and the isolation barrel 8 descends along the first direction y, separating the inner bin A from the outer bin B, thereby ensuring the isolation of the inner bin A from the outer bin B after the silicon material is added to the barrel next time; the setting of the isolation barrel 8 and the bottom cone 7 realizes that the barrel is an independent sealed tank body, thereby ensuring the smooth lifting and lowering of the inner barrel 1, and during feeding, since the barrel can be directly connected to the single crystal furnace table 261 to evacuate and purify the silicon material, it is not necessary to extend it into the single crystal furnace 26 sub-chamber, so the feeding method of the barrel is no longer restricted by the shape of the single crystal furnace 26 sub-chamber, and at the same time, it can save evacuation time, improve the degree of automation of feeding, reduce the consumption of argon, and save costs; the barrel is no longer lifted by a heavy hammer when loading, and there is no need to switch the seed crystal chuck and the barrel hanging ring back and forth for installation, which simplifies the feeding steps, extends the service life of the seed crystal chuck, and improves the automation level of the feeding process.
在一些可选的实施例中，参照图1和图2，外壳2包括依次连接的第一壳体21、第二壳体22、第三壳体23和顶盖24，隔离桶8靠近第三壳体23的一侧设置隔离桶升降杆17，隔离桶升降杆17与隔离桶升降电机18的输出轴连接，隔离桶升降电机18设置于顶盖24上。In some optional embodiments, referring to Figures 1 and 2, the outer shell 2 includes a first shell 21, a second shell 22, a third shell 23 and a top cover 24 connected in sequence, and an isolation barrel lifting rod 17 is provided on the side of the isolation barrel 8 close to the third shell 23. The isolation barrel lifting rod 17 is connected to the output shaft of the isolation barrel lifting motor 18, and the isolation barrel lifting motor 18 is provided on the top cover 24.
需要说明的是，外壳2的第一壳体21、第二壳体22、第三壳体23和顶盖24之间设置密封圈，增强密闭性，实现密闭紧固连接，外壳2内部形成一定的容纳空间，为后续内料桶1和隔离桶8的设置以及加入硅料提供一定的空间基础，形成容量较大的料桶外形，增大料桶容积。It should be noted that sealing rings are arranged between the first shell 21, the second shell 22, the third shell 23 and the top cover 24 of the outer shell 2 to enhance the airtightness and achieve a closed and tight connection. A certain accommodating space is formed inside the outer shell 2, which provides a certain space basis for the subsequent arrangement of the inner barrel 1 and the isolation barrel 8 and the addition of silicon material, thereby forming a barrel shape with a larger capacity and increasing the barrel volume.
需要说明的是，参照图1和图6，隔离桶8靠近第三壳体23的一侧设置隔离桶升降杆17，隔离桶升降杆17采用的是升降丝杆装置，升降丝杆装置运行过程的摩擦损失比较小，传动效率比较高，可以保证工作效率；运行比较平稳，保证升降过程的顺利进行；使用寿命长，可以一定程度上节约成本；隔离桶升降杆17与隔离桶升降电机18的输出轴连接，隔离桶升降电机18设置于顶盖24上，一定程度的节省了料桶内空间同时保持运行顺畅。It should be noted that, referring to Figures 1 and 6, an isolation barrel lifting rod 17 is provided on the side of the isolation barrel 8 close to the third shell body 23. The isolation barrel lifting rod 17 adopts a lifting screw device. The friction loss of the lifting screw device during operation is relatively small, and the transmission efficiency is relatively high, which can ensure work efficiency; the operation is relatively stable, ensuring the smooth progress of the lifting process; the service life is long, which can save costs to a certain extent; the isolation barrel lifting rod 17 is connected to the output shaft of the isolation barrel lifting motor 18, and the isolation barrel lifting motor 18 is arranged on the top cover 24, which saves space in the barrel to a certain extent while maintaining smooth operation.
在一些可选的实施例中，参照图1-图4，内料桶1的顶部设置料桶连杆9，料桶连杆9的另一端连接识别环10，识别环10与推动环12通过滑杆19连接，推动环12沿滑杆19滑动，滑杆19上套设弹簧11；推动环12的中心设置推动螺母13；推动螺母13与料桶升降丝杆4啮合，料桶升降丝杆4设置于内料桶1内，与料桶升降电机15连接，料桶升降电机15设置于顶盖24上。In some optional embodiments, referring to Figures 1-4, a barrel connecting rod 9 is set on the top of the inner barrel 1, and the other end of the barrel connecting rod 9 is connected to an identification ring 10. The identification ring 10 is connected to a push ring 12 through a slide rod 19. The push ring 12 slides along the slide rod 19, and a spring 11 is sleeved on the slide rod 19; a push nut 13 is set at the center of the push ring 12; the push nut 13 engages with the barrel lifting screw 4, and the barrel lifting screw 4 is set in the inner barrel 1 and connected to the barrel lifting motor 15, and the barrel lifting motor 15 is set on the top cover 24.
需要说明的是，内料桶1的顶部设置料桶连杆9，料桶连杆9的另一端与识别环10螺栓连接，便于更换，简化安装步骤；识别环10与推动环12通过滑杆19使用螺栓连接，滑杆19表面光滑，为弹簧11提供一定的安装基础；弹簧11套设在滑杆19上，滑杆19另一端连接推动环12，弹簧11可根据挤压程度判断内料桶1位置，通过一组驱动机构及实现内料桶1和底锥7的顺序移动同时可防止底锥7提前开启或延后关闭；It should be noted that a barrel connecting rod 9 is provided on the top of the inner barrel 1, and the other end of the barrel connecting rod 9 is bolted to the identification ring 10, which is convenient for replacement and simplifies the installation steps; the identification ring 10 is bolted to the push ring 12 through the slide rod 19, and the surface of the slide rod 19 is smooth, providing a certain installation basis for the spring 11; the spring 11 is sleeved on the slide rod 19, and the other end of the slide rod 19 is connected to the push ring 12. The spring 11 can judge the position of the inner barrel 1 according to the degree of extrusion, and can prevent the bottom cone 7 from opening early or closing late through a set of driving mechanisms and realizing the sequential movement of the inner barrel 1 and the bottom cone 7;
推动环12的中心设置推动螺母13，推动螺母13与料桶升降丝杆4啮合，料桶升降丝杆4设置于内料桶1内，与料桶升降电机15连接；升降电机转动，带动料桶升降丝杆4转动，料桶升降丝杆4与推动螺母13发生相对运动，内料桶1下降，因料桶升降丝杆4与推动螺母13啮合，内料桶1下降过程升降丝杆与推动螺母13之间摩擦较大，保证内料桶1下降的平稳性，提升料桶的稳定性。A pushing nut 13 is set at the center of the pushing ring 12, and the pushing nut 13 is meshed with the barrel lifting screw 4. The barrel lifting screw 4 is set in the inner barrel 1 and is connected to the barrel lifting motor 15; the lifting motor rotates, driving the barrel lifting screw 4 to rotate, and the barrel lifting screw 4 and the pushing nut 13 move relative to each other, and the inner barrel 1 descends. Because the barrel lifting screw 4 is meshed with the pushing nut 13, the friction between the lifting screw and the pushing nut 13 is relatively large during the descending process of the inner barrel 1, which ensures the smooth descent of the inner barrel 1 and improves the stability of the barrel.
需要说明的是，内料桶1下降过程中，料桶升降电机15带动料桶升降丝杆4转动，通过推动螺母13带动推动环12、识别环10，弹簧11、料桶连杆9、内料桶1、底锥升降杆6、隔离管14和底锥7整体向下移动，内料桶1停止下降后，料桶升降电机15继续转动，内料桶1保持静止，推动螺母13继续带动推动环12、底锥升降杆6，隔离管14和底锥7向下移动，弹簧11被压缩，底锥7打开；通过设置弹簧11，可根据挤压程度判断内料桶1位置，实现一套驱动结构按顺序驱动内料桶1与底锥7的升降过程，提升料桶自动化程度，节约料桶的使用空间，进一步增大料桶容积同时避免内料桶1未下降到指定位置或在下降过程中底锥7提前打开，发生硅料泄露。It should be noted that during the descent of the inner barrel 1, the barrel lifting motor 15 drives the barrel lifting screw 4 to rotate, and drives the pushing ring 12, the identification ring 10, the spring 11, the barrel connecting rod 9, the inner barrel 1, the bottom cone lifting rod 6, the isolation tube 14 and the bottom cone 7 to move downward as a whole through the pushing nut 13. After the inner barrel 1 stops descending, the barrel lifting motor 15 continues to rotate, the inner barrel 1 remains stationary, and the pushing nut 13 continues to drive the pushing ring 12, the bottom cone lifting rod 6, the isolation tube 14 and the bottom cone 7 to move downward, the spring 11 is compressed, and the bottom cone 7 opens; by setting the spring 11, the position of the inner barrel 1 can be judged according to the degree of extrusion, and a set of driving structures can be realized to sequentially drive the lifting process of the inner barrel 1 and the bottom cone 7, thereby improving the automation degree of the barrel, saving the use space of the barrel, further increasing the volume of the barrel, and avoiding the inner barrel 1 not descending to the specified position or the bottom cone 7 opening prematurely during the descent process, resulting in silicon material leakage.
在一些可选的实施例中，参照图1-图4，底锥7与底锥升降杆6连接，底锥升降杆6与推动环12固定连接，底锥升降杆6外设置隔离管14，隔离管14一端连接推动环12，另一端连接底锥7。In some optional embodiments, referring to Figures 1-4, the bottom cone 7 is connected to the bottom cone lifting rod 6, the bottom cone lifting rod 6 is fixedly connected to the push ring 12, and an isolation tube 14 is arranged outside the bottom cone lifting rod 6. One end of the isolation tube 14 is connected to the push ring 12, and the other end is connected to the bottom cone 7.
需要说明的是，底锥升降杆6伸入底锥7内部，通过螺栓连接，增强底锥7升降过程的稳定性。It should be noted that the bottom cone lifting rod 6 extends into the bottom cone 7 and is connected by bolts to enhance the stability of the bottom cone 7 during the lifting process.
可以理解的是，底锥7与底锥升降杆6连接，底锥升降杆6与推动环12连接，实现由料桶升降电机15可同时驱动内料桶1与底锥7的升降过程，提高料桶的自动化同时节约成本；底锥升降杆6外设置隔离管14，隔离管14一端连接推动环12，另一端连接底锥7，隔离管14对底锥升降杆6起保护作用。It can be understood that the bottom cone 7 is connected to the bottom cone lifting rod 6, and the bottom cone lifting rod 6 is connected to the pushing ring 12, so that the lifting process of the inner barrel 1 and the bottom cone 7 can be driven by the barrel lifting motor 15 at the same time, thereby improving the automation of the barrel and saving costs; an isolation tube 14 is arranged outside the bottom cone lifting rod 6, one end of the isolation tube 14 is connected to the pushing ring 12, and the other end is connected to the bottom cone 7, and the isolation tube 14 protects the bottom cone lifting rod 6.
在一些可选的实施例中，参照图1，底锥升降杆6包括沿第一方向y连接的第一段61和第二段62，料桶升降丝杆4设置于第一段61内，与第二段62紧固连接。In some optional embodiments, referring to FIG. 1 , the bottom cone lifting rod 6 includes a first section 61 and a second section 62 connected along a first direction y, and the barrel lifting screw 4 is disposed in the first section 61 and is fixedly connected to the second section 62 .
可以理解的是，内料桶1未下降时料桶升降丝杆4全部置于底锥升降杆6的第一段61内，在内料桶1以及底锥7升降过程中保证料桶升降丝杆4的放置空间，同时避免金属材质的料桶升降丝杆4与硅料接触，提高生产的硅棒纯度。It can be understood that when the inner barrel 1 has not descended, the barrel lifting screw 4 is completely placed in the first section 61 of the bottom cone lifting rod 6, ensuring the placement space of the barrel lifting screw 4 during the lifting process of the inner barrel 1 and the bottom cone 7, while avoiding the contact between the metal barrel lifting screw 4 and the silicon material, thereby improving the purity of the produced silicon rods.
在一些可选的实施例中，参照图1-图4，隔离管14与底锥升降杆6沿第一方向y的长度相等。In some optional embodiments, referring to FIGS. 1-4 , the lengths of the isolation tube 14 and the bottom cone lifting rod 6 along the first direction y are equal.
可以理解的是，隔离管14与底锥升降杆6沿第一方向y的长度相等，可始终保证底锥升降杆6位于隔离管14内侧，避免金属材质的底锥升降杆6和置于料桶内的硅料接触，污染硅料。It can be understood that the length of the isolation tube 14 and the bottom cone lifting rod 6 along the first direction y are equal, which can always ensure that the bottom cone lifting rod 6 is located inside the isolation tube 14, avoiding the metal bottom cone lifting rod 6 from contacting the silicon material placed in the barrel and contaminating the silicon material.
在一些可选的实施例中，参照图1与图8，内料桶1和隔离桶8之间设置限位环5，限位环5靠近第一壳体21一侧与外壳2连接。In some optional embodiments, referring to FIG. 1 and FIG. 8 , a limiting ring 5 is provided between the inner material barrel 1 and the isolation barrel 8 , and the limiting ring 5 is connected to the outer shell 2 on a side close to the first shell 21 .
需要说明的是，本发明提供的一种大容量料桶内设置限位环5位于内料桶1与隔离桶8之间，限位环5由4个支柱(图中未示出)支撑，柱一侧与外壳2的第一壳体21螺栓连接，保证稳定性，限位环5设置于内料桶1与隔离桶8之间，在内料桶1下降过程中，如限位环5与识别环10接触，即说明内料桶1无法再下降，限位环5对内料桶1的下降程度进行限制，避免内料桶1过度下降对单晶炉26或硅料造成损坏；设置限位环5且支柱与第一壳体21螺栓连接一方面保证对内料桶1下降位置的限制作用，另一方面避免隔离桶8升起后，外仓A内的硅料流入内仓B。It should be noted that a large-capacity barrel provided by the present invention is provided with a limit ring 5 located between the inner barrel 1 and the isolation barrel 8, and the limit ring 5 is supported by four pillars (not shown in the figure), and one side of the pillar is bolted to the first shell 21 of the outer shell 2 to ensure stability. The limit ring 5 is arranged between the inner barrel 1 and the isolation barrel 8. During the descending process of the inner barrel 1, if the limit ring 5 contacts the identification ring 10, it means that the inner barrel 1 can no longer descend. The limit ring 5 limits the descending degree of the inner barrel 1 to prevent the inner barrel 1 from excessively descending and causing damage to the single crystal furnace 26 or silicon material; the limit ring 5 is arranged and the pillars are bolted to the first shell 21 to ensure the limiting effect on the descending position of the inner barrel 1 on the one hand, and on the other hand, prevent the silicon material in the outer bin A from flowing into the inner bin B after the isolation barrel 8 is raised.
在一些可选的实施例中，内料桶1还包括内装料口(图中未示出)，内装料口由内料桶1的桶壁延伸至外壳2的外侧。In some optional embodiments, the inner material barrel 1 further includes an inner loading port (not shown in the figures), and the inner loading port extends from the barrel wall of the inner material barrel 1 to the outside of the outer shell 2 .
可以理解的是，向内仓B与外仓A加入硅料时，使用独立的装料口25以及内装料口同时加料，加快加料速度，提高工作效率。It is understandable that when adding silicon material to the inner bin B and the outer bin A, the independent loading port 25 and the inner loading port are used to add material at the same time, thereby accelerating the feeding speed and improving work efficiency.
在一些可选的实施例中，参照图1和图6，限位环5远离第一壳体21一侧设置沿第一方向y延伸的限位杆20，限位杆20的一端与顶盖24连接，。In some optional embodiments, referring to FIG. 1 and FIG. 6 , a limiting rod 20 extending along the first direction y is provided on a side of the limiting ring 5 away from the first shell 21 , and one end of the limiting rod 20 is connected to the top cover 24 .
需要说明的是，本发明提供的一种大容量料桶设置2个限位杆20，位于内料桶1两侧，限位环5设置凹槽，限位杆20一端与嵌入凹槽，另一端与顶盖24连接，在内料桶1下降过程中进一步保护内料桶1，平衡料桶升降丝杆4的转矩，防止内料桶1旋转。It should be noted that a large-capacity barrel provided by the present invention is provided with two limit rods 20, which are located on both sides of the inner barrel 1. The limit ring 5 is provided with a groove. One end of the limit rod 20 is embedded in the groove, and the other end is connected to the top cover 24. During the descent of the inner barrel 1, the inner barrel 1 is further protected, the torque of the barrel lifting screw 4 is balanced, and the rotation of the inner barrel 1 is prevented.
基于同一发明思想，参照图5-图8，本发明还提供了一种单晶硅的生产方法，包括上料过程，上料过程包括：Based on the same inventive concept, referring to FIGS. 5 to 8 , the present invention further provides a method for producing single crystal silicon, including a loading process, the loading process comprising:
将大容量料桶移至单晶炉26的炉台261上，外壳2与炉台261接触；单晶炉26还包括坩埚262；The large-capacity material barrel is moved onto the furnace table 261 of the single crystal furnace 26, and the housing 2 is in contact with the furnace table 261; the single crystal furnace 26 also includes a crucible 262;
坩埚262设置于炉台261内，炉台翻板阀263设置于炉台261开口处；The crucible 262 is disposed in the furnace table 261, and the furnace table flap valve 263 is disposed at the opening of the furnace table 261;
向内胆3与隔离桶8形成的外仓A内加入硅料；向内料桶1形成的内仓B内加入硅料；Add silicon material into the outer bin A formed by the inner tank 3 and the isolation barrel 8; add silicon material into the inner bin B formed by the inner barrel 1;
内料桶1下降伸入坩埚262内；The inner barrel 1 descends and extends into the crucible 262;
隔离桶8上升，外仓A与内仓B连通；The isolation barrel 8 rises, and the outer chamber A is connected with the inner chamber B;
底锥7下降，硅料由底锥7流入坩埚262内；The bottom cone 7 descends, and the silicon material flows from the bottom cone 7 into the crucible 262;
底锥7上升，内料桶1上升，隔离桶8下降。The bottom cone 7 rises, the inner material barrel 1 rises, and the isolation barrel 8 falls.
具体的，本发明还提供了一种单晶硅的生产方法，包括上料过程，上料过程包括：Specifically, the present invention also provides a method for producing single crystal silicon, including a loading process, wherein the loading process includes:
将大容量料桶移至单晶炉26的炉台261上，外壳2的第一壳体21与炉台261接触；单晶炉26还包括坩埚262；The large-capacity material barrel is moved onto the furnace table 261 of the single crystal furnace 26, and the first shell 21 of the housing 2 is in contact with the furnace table 261; the single crystal furnace 26 also includes a crucible 262;
坩埚262设置于炉台261内，炉台翻板阀263设置于炉台261开口处；The crucible 262 is disposed in the furnace table 261, and the furnace table flap valve 263 is disposed at the opening of the furnace table 261;
向内胆3与隔离桶8形成的外仓A内加入硅料；向内料桶1形成的内仓B内加入硅料；Add silicon material into the outer bin A formed by the inner tank 3 and the isolation barrel 8; add silicon material into the inner bin B formed by the inner barrel 1;
内料桶1下降伸入坩埚262内；The inner barrel 1 descends and extends into the crucible 262;
隔离桶8上升，外仓A与内仓B连通；The isolation barrel 8 rises, and the outer chamber A is connected with the inner chamber B;
底锥7下降，硅料由底锥7流入坩埚262内；The bottom cone 7 descends, and the silicon material flows from the bottom cone 7 into the crucible 262;
底锥7上升，内料桶1上升，隔离桶8下降。The bottom cone 7 rises, the inner material barrel 1 rises, and the isolation barrel 8 falls.
具体的，本发明还提供了一种单晶硅的生产方法，包括上料过程，上料过程包括：参照图5，将大容量料桶移至单晶炉26的炉台261上，第一壳体21与炉台261接触；炉台翻板阀263开始处于关闭状态，先对料桶内部进行抽空净化，抽空净化完成后，炉台翻板阀263打开；现有技术中通过单晶炉26副室进行此过程，所以料桶上料方式受单晶炉26副室尺寸的限制，本发明提供的单晶硅的生产方法可以避免此问题，而且节约抽空时间和氩气消耗。Specifically, the present invention also provides a method for producing single crystal silicon, including a loading process, the loading process comprising: referring to Figure 5, moving a large-capacity material barrel to the furnace table 261 of the single crystal furnace 26, and the first shell 21 is in contact with the furnace table 261; the furnace table flap valve 263 is initially in a closed state, and the interior of the material barrel is first evacuated and purified, and after the evacuation and purification are completed, the furnace table flap valve 263 is opened; in the prior art, this process is performed through the sub-chamber of the single crystal furnace 26, so the material barrel loading method is limited by the size of the sub-chamber of the single crystal furnace 26. The single crystal silicon production method provided by the present invention can avoid this problem and save evacuation time and argon gas consumption.
向内胆3与隔离桶8形成的外仓A内加入硅料；向内料桶1形成的内仓B内加入硅料；内外仓分别加入硅料，避免与金属接触，造成污染，在向单晶炉26内加料前内仓B和外仓A被隔离，密封环16可以防止硅料从内仓B外侧掉入炉内，若硅料从内仓B外侧掉入炉内则会引起拉晶故障。Add silicon material into the outer bin A formed by the inner tank 3 and the isolation barrel 8; add silicon material into the inner bin B formed by the inner material barrel 1; add silicon material into the inner and outer bins respectively to avoid contact with metal and cause pollution. Before adding materials into the single crystal furnace 26, the inner bin B and the outer bin A are isolated, and the sealing ring 16 can prevent silicon material from falling into the furnace from the outside of the inner bin B. If silicon material falls into the furnace from the outside of the inner bin B, it will cause crystal pulling failure.
参照图6-图7，内料桶1下降伸入坩埚262内：料桶升降电机15带动料桶升降丝杆4转动，料桶升降丝杆4转动，通过推动螺母13带动推动环12、识别环10、弹簧11、料桶连杆9、内料桶1、底锥升降杆6、隔离管14和底锥7整体向下移动，直到识别环10与限位环5接触，内料桶1停止下降，此时内料桶1下降伸入坩埚262内；6-7, the inner barrel 1 descends and extends into the crucible 262: the barrel lifting motor 15 drives the barrel lifting screw 4 to rotate, and the barrel lifting screw 4 rotates, and drives the pushing ring 12, the identification ring 10, the spring 11, the barrel connecting rod 9, the inner barrel 1, the bottom cone lifting rod 6, the isolation tube 14 and the bottom cone 7 to move downward as a whole through the pushing nut 13, until the identification ring 10 contacts the limit ring 5, and the inner barrel 1 stops descending. At this time, the inner barrel 1 descends and extends into the crucible 262;
参照图6-图7，内料桶1下降入坩埚262后，隔离桶8上升，外仓A与内仓B连通：隔离桶升降电机18工作，通过隔离桶升降杆17带动隔离桶8上升到上位，实现内仓B和外仓A在隔离桶8下部连通。6-7 , after the inner material barrel 1 descends into the crucible 262 , the isolation barrel 8 rises, and the outer warehouse A is connected with the inner warehouse B: the isolation barrel lifting motor 18 works, and drives the isolation barrel 8 to rise to the upper position through the isolation barrel lifting rod 17 , so that the inner warehouse B and the outer warehouse A are connected at the lower part of the isolation barrel 8 .
底锥7下降，硅料由底锥7流入坩埚262内：隔离桶8上升到上位后，料桶升降电机15继续转动，此时识别环10被限位环5挡住，无法移动，同时带动料桶连杆9和内料桶1保持静止。推动螺母13继续带动推动环12、底锥升降杆6、隔离管14和底锥7向下移动，弹簧11被压缩，底锥7打开，硅料便从底锥7开口处流出进入坩埚262内。The bottom cone 7 descends, and the silicon material flows from the bottom cone 7 into the crucible 262: After the isolation barrel 8 rises to the upper position, the barrel lifting motor 15 continues to rotate. At this time, the identification ring 10 is blocked by the limit ring 5 and cannot move, and at the same time drives the barrel connecting rod 9 and the inner barrel 1 to remain stationary. The push nut 13 continues to drive the push ring 12, the bottom cone lifting rod 6, the isolation tube 14 and the bottom cone 7 to move downward, the spring 11 is compressed, the bottom cone 7 opens, and the silicon material flows out from the opening of the bottom cone 7 into the crucible 262.
底锥7上升，内料桶1上升，隔离桶8下降：硅料全部进入坩埚262后，料桶升降电机15反向转动，推动螺母13带动推动环12、底锥升降杆6、隔离管14和底锥7向上移动直到底锥7与内料桶1接触，底锥7关闭，之后料桶升降电机15继续转动，此时在弹簧11的作用下，带动推动环12向上移动，直到推动环12移动到与滑杆19接触，然后带动识别环10、料桶连杆9、内料桶1、底锥升降杆6、隔离管14和底锥7一起继续向上移动，直到内料桶1上升到上位；同时隔离桶升降电机18工作，通过隔离桶升降杆17带动隔离桶8下移到下位与内胆3接触，炉台翻板阀263重新关闭，加料完成。The bottom cone 7 rises, the inner barrel 1 rises, and the isolation barrel 8 falls: after all the silicon materials enter the crucible 262, the barrel lifting motor 15 rotates in the opposite direction, and the push nut 13 drives the push ring 12, the bottom cone lifting rod 6, the isolation tube 14 and the bottom cone 7 to move upward until the bottom cone 7 contacts the inner barrel 1, and the bottom cone 7 is closed. Then the barrel lifting motor 15 continues to rotate. At this time, under the action of the spring 11, the push ring 12 is driven to move upward until the push ring 12 moves to contact the slide bar 19, and then drives the identification ring 10, the barrel connecting rod 9, the inner barrel 1, the bottom cone lifting rod 6, the isolation tube 14 and the bottom cone 7 to continue to move upward until the inner barrel 1 rises to the upper position; at the same time, the isolation barrel lifting motor 18 works, and drives the isolation barrel 8 to move down to the lower position and contact the inner tank 3 through the isolation barrel lifting rod 17, and the furnace table flap valve 263 is closed again, and the feeding is completed.
需要说明的是，本发明提供的一种单晶硅的生产方法还包括熔料、引晶、放肩、转肩、等径以及收尾过程。It should be noted that the production method of single crystal silicon provided by the present invention also includes melting, seeding, shoulder release, shoulder rotation, equal diameter and finishing processes.
可以理解的是，本发明提供的单晶硅的生产方法通过料桶直接与单晶炉26的炉台261连接，加料时，内料桶1升入炉台261内，隔离桶8升起，将内仓B与外仓A连通，底锥7下降，即可将内仓B与外仓A内的硅料全部加入单晶炉26内，实现单次投料量可达现有料桶的3倍左右，加料方式也不受单晶炉26副室形状的限制。It can be understood that the production method of single crystal silicon provided by the present invention is directly connected to the furnace table 261 of the single crystal furnace 26 through a material barrel. When adding material, the inner material barrel 1 is raised into the furnace table 261, the isolation barrel 8 is raised, the inner bin B is connected with the outer bin A, and the bottom cone 7 is lowered. Then, all the silicon materials in the inner bin B and the outer bin A can be added to the single crystal furnace 26, and the single feeding amount can reach about 3 times that of the existing material barrel, and the feeding method is not limited by the shape of the sub-chamber of the single crystal furnace 26.
通过上述实施例可知，本发明提供的一种大容量料桶以及单晶硅的生产方法，至少实现了如下的有益效果：It can be seen from the above embodiments that the large-capacity material barrel and the method for producing single crystal silicon provided by the present invention achieve at least the following beneficial effects:
本发明提供的一种大容量料桶，包括外壳、内胆、隔离桶、内料桶；外壳设置装料口，便于硅料装入料桶内；紧贴外壳的内壁设置内胆，内胆对料桶内部有一定保护作用且形成一定空间容纳硅料；隔离桶设置于内胆内，底端与内胆接触，增加料桶稳定性；隔离桶沿第一方向升降，实现内仓与外仓的连通；内料桶设置于隔离桶内，沿第一方向升降，内料桶可实现伸入单晶炉内直接上料；内料桶的底部设置底锥，底锥沿第一方向下降，打开料桶，底锥沿第一方向升起，料桶关闭实现料桶为独立密封罐体，保证装入料桶的硅料避免与空气接触，加料过程内料桶可伸入单晶炉内加料，不再受单晶炉副室形状的限制，可以直接与单晶炉连接后进行硅料的抽空净化，节约抽空时间和氩气消耗；本发明提供的单晶硅的生产方法通过料桶直接与单晶炉的炉台连接，加料时，内料桶升入炉台内，隔离桶升起，将内仓与外仓连通，底锥下降，即可将内仓与外仓内的硅料全部加入单晶炉内，实现单次投料量可达现有料桶的3倍左右，减少了加料次数，减少了炉台的打开次数，利于炉台保温，缩短熔料时间，降低能耗。The present invention provides a large-capacity barrel, comprising an outer shell, an inner liner, an isolation barrel and an inner barrel; the outer shell is provided with a loading port to facilitate the loading of silicon material into the barrel; the inner liner is arranged close to the inner wall of the outer shell, the inner liner has a certain protective effect on the inside of the barrel and forms a certain space to accommodate the silicon material; the isolation barrel is arranged in the inner liner, and the bottom end is in contact with the inner liner to increase the stability of the barrel; the isolation barrel is lifted and lowered along a first direction to realize the connection between the inner bin and the outer bin; the inner barrel is arranged in the isolation barrel and lifted and lowered along the first direction, and the inner barrel can be extended into the single crystal furnace for direct loading; a bottom cone is arranged at the bottom of the inner barrel, the bottom cone descends along the first direction, the barrel is opened, the bottom cone rises along the first direction, and the barrel is closed to realize that the barrel is an independent sealed tank body, It is ensured that the silicon material loaded into the material barrel avoids contact with the air. During the feeding process, the inner material barrel can be extended into the single crystal furnace for feeding, and is no longer restricted by the shape of the single crystal furnace sub-chamber. It can be directly connected to the single crystal furnace to evacuate and purify the silicon material, saving evacuation time and argon gas consumption. The single crystal silicon production method provided by the present invention is directly connected to the furnace table of the single crystal furnace through the material barrel. When feeding, the inner material barrel is raised into the furnace table, the isolation barrel is raised, the inner bin is connected with the outer bin, and the bottom cone is lowered, so that all the silicon materials in the inner bin and the outer bin can be added to the single crystal furnace, and the single feeding amount can reach about 3 times of the existing material barrel, which reduces the number of feeding times and the number of times the furnace table is opened, which is beneficial to the insulation of the furnace table, shortens the melting time, and reduces energy consumption.
虽然已经通过例子对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本发明的范围。Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration rather than for limiting the scope of the present invention.
本领域的技术人员应该理解，可在不脱离本发明的范围和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.
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