技术领域technical field
本发明系有关于一种永磁罐装泵之防蚀外壳结构改良，尤指一种无轴封永磁罐装泵为马达与泵浦做成一体，且其马达转子与定子线圈都是经耐腐蚀材料封装隔绝保护，而且转子是直接与输送液体相接触，在许多零泄漏需求的工业用途逐渐为使用者重视，尤其在含有毒性、易燃、高腐蚀等化学液体，例如PCB生产设备，本创作特别针对安装在药液过滤桶下方用来加压的永磁罐装泵之结构进行改良，目的在防止更换滤材时滴落药液对永磁罐装泵之铝合金中框、后框等马达外壳零件产生腐蚀；本创作的主要目的在创新一耐腐蚀塑料强化框其内径空间装设并固定永磁马达，也就是铝合金马达外壳表面受到保护但也限制原有表面散热，因此，本创作的另一目的也必须同时创新马达散热机制，以确保马达有足够的散热量。The invention relates to the improvement of the structure of the anti-corrosion shell of a permanent magnet canned pump, especially a permanent magnet canned pump without shaft seal. Corrosion-resistant materials are packaged for isolation protection, and the rotor is directly in contact with the conveying liquid. It is gradually valued by users in many industrial applications that require zero leakage, especially in chemical liquids containing toxic, flammable, and highly corrosive chemicals, such as PCB production equipment. This creation is especially aimed at improving the structure of the permanent magnet canned pump installed under the liquid medicine filter barrel for pressurization, in order to prevent the dripping liquid medicine from affecting the aluminum alloy middle frame and rear of the permanent magnet canned pump when changing the filter material. Corrosion occurs in the parts of the motor casing such as the frame; the main purpose of this creation is to install and fix the permanent magnet motor in the inner diameter space of the corrosion-resistant plastic reinforced frame, that is, the surface of the aluminum alloy motor casing is protected but also limits the heat dissipation of the original surface, so , Another purpose of this creation is to innovate the motor heat dissipation mechanism at the same time to ensure that the motor has sufficient heat dissipation.
背景技术Background technique
按，一般无轴封永磁罐装泵为马达与泵浦做成一体，其内部装设有马达定子绕组的中框、后框等马达铝合金外壳零件，都装设有复数散热鳍片来提供足够的散热能力，为了在含有腐蚀液体滴落的环境操作与运转，习知的永磁罐装泵之铝合金中框、后框等外壳零件会以耐腐蚀材料披覆，例如树脂漆或氟树脂粉体烤漆，但这些方案在长时间运转下难谓有满意的耐腐蚀性能，尤其在药液过滤桶下方用来加压的永磁罐装泵会直接接触滴落药液，其外壳的耐腐蚀性能就必须更为加强；许多情况是在永磁罐装泵的上方用耐腐蚀塑料做成的保护罩来保护，此一方法使用多年有不错的效果，但保护罩也常会受限于相关管路安排而无法有完善保护效果，例如长度受限而有金属件局部外露而受滴落药液腐蚀；Press, the general non-sealed permanent magnet canned pump is made of a motor and a pump, and the motor aluminum alloy shell parts such as the middle frame and the rear frame of the motor stator winding are installed inside, and a plurality of heat dissipation fins are installed to Provide sufficient heat dissipation capacity. In order to operate and run in an environment containing corrosive liquid dripping, the aluminum alloy middle frame, rear frame and other shell parts of the known permanent magnet canned pump will be covered with corrosion-resistant materials, such as resin paint or Fluororesin powder baking paint, but these solutions can hardly be said to have satisfactory corrosion resistance under long-term operation. The corrosion resistance must be strengthened; in many cases, a protective cover made of corrosion-resistant plastic is used to protect the permanent magnet canned pump. This method has good results for many years, but the protective cover is often limited. Due to the arrangement of the relevant pipelines, it is impossible to have a perfect protection effect, for example, the length is limited and the metal parts are partially exposed and corroded by the dripping liquid;
本发明以耐腐蚀塑料强化框的结构保护马达中框、后框等铝合金外壳，并且创新马达散热机制，以确保马达有足够的散热量；The invention protects the aluminum alloy casings such as the middle frame and the rear frame of the motor with the structure of a corrosion-resistant plastic reinforced frame, and innovates the heat dissipation mechanism of the motor to ensure that the motor has sufficient heat dissipation;
以下的引证案是习知的无轴封永磁罐装泵与无轴封磁驱动泵，其结构都未曾针对滴落药液腐蚀问题进行结构改良，习知技术的相关引证案说明如下：The following citations are the conventional sealless permanent magnet canned pumps and shaft sealless magnetic drive pumps, neither of which has been structurally improved to solve the corrosion problem of dripping liquid. The related citations of the known technologies are explained as follows:
引证案一：Citation case one:
2009年台湾专利TWM369391永磁罐装泵浦之结构改良，应用于耐高温耐腐蚀用途，其马达结构为悬臂固定轴结构但马达为径向气隙内转子设计，本引证案的封装厚度含腐蚀裕度，其单边厚度为3mm总气隙宽度8mm，使用刚性复合固定轴结构以满足高温、高马力数用途；本引证案的图说显示永磁罐装泵浦的结构比磁驱动泵更为精简，因为罐装马达取代了磁耦合器与感应马达，更适合安装在空间尺寸受限的设备中，但本引证案未曾针对滴落药液腐蚀问题提出进一步的对策。In 2009, the Taiwan patent TWM369391 improved the structure of the permanent magnet canned pump, which is used in high temperature and corrosion resistant applications. The motor structure is a cantilever fixed shaft structure, but the motor is designed with a radial air gap inner rotor. The package thickness of this cited case includes corrosion Margin, the thickness of one side is 3mm and the total air gap width is 8mm, and the rigid composite fixed shaft structure is used to meet the high temperature and high horsepower applications; Streamlined, because the canned motor replaces the magnetic coupler and induction motor, and is more suitable for installation in equipment with limited space and size. However, this cited case did not propose further countermeasures against the corrosion of dripping liquid.
引证案二：Citation two:
请参阅图1，用于PCB制程的过滤系统结构示意图，过滤系统1包含有无轴封磁驱动泵12、脚架114、过滤筒113等主要零件；磁驱动泵12系安装于脚架114上，其泵入口121用来连接PCB生产设备之药液槽，泵出口122用来连接过滤筒113的入口，用来输出加压过的药液进入过滤筒113的内部，使药液经过滤芯过滤后由过滤筒113的过滤筒出口116再送回PCB生产设备之药液槽中，经过一段时间后过滤筒113内部的滤芯必须更换，这时就必需打开过滤筒113的上盖115来更换，在更换时旧滤芯在取出过程中药液会滴落到过滤筒113外，为了避免药液滴落到磁驱动泵12，习知技术便使用保护罩123来隔绝药液，但实务上脚架114有一定的高度限制，而且过滤筒出口116的高度也必需配合PCB生产设备之药液槽之回流管高度，这常常使得保护罩123无法完全盖住磁驱动泵12的金属零件部份，如图1中的铸铁拖架124，保护罩123的高度与过滤筒出口116的高度发生干涉，铸铁拖架124就会面临药液滴落腐蚀的问题。Please refer to Fig. 1, a schematic structural diagram of a filtration system used in the PCB manufacturing process. The filtration system 1 includes main components such as a shaft-sealed magnetic drive pump 12, a foot frame 114, and a filter cartridge 113; the magnetic drive pump 12 is installed on the foot frame 114. , the pump inlet 121 is used to connect the liquid medicine tank of the PCB production equipment, and the pump outlet 122 is used to connect the inlet of the filter cartridge 113, and is used to output the pressurized liquid medicine into the inside of the filter cartridge 113, so that the liquid medicine can be filtered through the filter element After that, the filter cartridge outlet 116 of the filter cartridge 113 is sent back to the liquid medicine tank of the PCB production equipment. After a period of time, the filter element inside the filter cartridge 113 must be replaced. At this time, the upper cover 115 of the filter cartridge 113 must be opened for replacement. When replacing the old filter element, the medicinal liquid will drip out of the filter cartridge 113 during the removal process. In order to prevent the medicinal liquid from dripping into the magnetic drive pump 12, the conventional technology uses a protective cover 123 to isolate the medicinal liquid, but in practice, the tripod 114 There is a certain height limit, and the height of the outlet 116 of the filter cartridge must also match the height of the return pipe of the liquid medicine tank of the PCB production equipment, which often makes the protective cover 123 unable to completely cover the metal parts of the magnetic drive pump 12, as shown in the figure In the cast iron bracket 124 in 1, the height of the protective cover 123 interferes with the height of the filter cartridge outlet 116, and the cast iron bracket 124 will face the problem of dripping and corrosion of the liquid medicine.
综合以上的案例发现，在泵浦出入口尺寸符合标准下，轴向长度更短的泵浦将会更容易安装到生产设备中，而且也可以减少承受药液滴落面积，但是防止腐蚀液侵蚀的需求永远不会减少，因为药液滴落的状况可以改善但无法根绝或有时会因操作人员疏失而无法预测，本创作针对以上问题特别提出改善方案，但本创作之永磁罐装泵之结构改良必须克服以下问题：Based on the above cases, it is found that if the size of the pump inlet and outlet meets the standard, the pump with a shorter axial length will be easier to install in the production equipment, and it can also reduce the area to withstand the dripping of the chemical liquid, but prevent the erosion of the corrosive liquid. The demand will never decrease, because the situation of liquid medicine dripping can be improved but cannot be eradicated or sometimes unpredictable due to the negligence of the operator. This creation specially proposes an improvement plan for the above problems, but the structure of the permanent magnet canned pump of this creation Improvements must overcome the following problems:
问题1：马达散热问题？Question 1: Motor heat dissipation problem?
耐腐蚀塑料强化框的结构可以免除滴落药液腐蚀问题，但也会限制原有马达中框散热鳍片的设置，马达散热需要新的机制，而永磁马达的高效率性能，其效率高于IEC60034-30之IE3效率等级，甚至1kW的马达效率也可高达90％以上，也可以大幅降低散热负荷。The structure of the corrosion-resistant plastic reinforced frame can avoid the problem of dripping liquid corrosion, but it will also limit the installation of heat dissipation fins in the original motor frame. The heat dissipation of the motor requires a new mechanism, and the high efficiency performance of the permanent magnet motor has high efficiency. According to the IE3 efficiency level of IEC60034-30, even a 1kW motor can have an efficiency of over 90%, which can also greatly reduce the heat dissipation load.
问题2：药液渗透问题？Question 2: What is the problem of liquid penetration?
引证案一的铝合金马达中框是用来结合泵前盖并迫紧后盖法兰来达到零泄漏的目地，但是滴落药液有可能沿着紧锁螺栓之螺牙缝，渗透进入马达中框之前法兰的螺牙孔内，导致铝合金中框腐蚀穿透而损毁定子之绕组线圈。The aluminum alloy motor middle frame cited in Case 1 is used to combine the pump front cover and tighten the rear cover flange to achieve zero leakage, but the dripping liquid may penetrate into the motor along the thread gap of the locking bolt In the screw hole of the flange before the middle frame, the aluminum alloy middle frame corrodes and penetrates and damages the winding coil of the stator.
本发明的结构改良使中小型的永磁罐装泵在合理成本下，都能免除滴落药液的腐蚀问题，并同时克服散热问题，使永磁罐装泵更适合安装在空间有限的生产设备中。The structure improvement of the present invention enables small and medium-sized permanent magnet canned pumps to avoid the corrosion problem of dripping liquid medicine at a reasonable cost, and at the same time overcome the problem of heat dissipation, making the permanent magnet canned pump more suitable for installation in limited space. in the device.
发明内容Contents of the invention
本发明之主要目的在于提供一种永磁罐装泵之防蚀外壳结构改良，其中永磁罐装泵结构主要在防止滴落药液对永磁罐装泵之铝合金中框、后框等马达外壳零件产生腐蚀，并同时解决马达散热问题；The main purpose of the present invention is to provide an improved structure of the anti-corrosion shell of the permanent magnet canned pump, wherein the structure of the permanent magnet canned pump is mainly to prevent the dripping liquid from affecting the aluminum alloy middle frame and rear frame of the permanent magnet canned pump. Corrosion of motor casing parts, and at the same time solve the problem of motor heat dissipation;
首先，针对马达外壳零件的药液腐蚀问题的解决方案如下：First of all, the solution to the problem of chemical corrosion of motor housing parts is as follows:
强化框为两端开口之圆筒状结构，由耐腐蚀塑料制成，其功能在防止滴落药液对永磁罐装泵之马达铝合金外壳产生腐蚀，但也限制马达外壳的散热能力；强化框的前端面法兰用来紧锁前盖并紧压密封后盖的前法兰，以确保腐蚀液体零泄漏，紧锁时采用不锈钢螺栓与螺帽以避免螺牙腐蚀，也就是螺牙孔是装设在强化框的前端面法兰上，不会有药液沿螺牙缝隙渗透进入铝合金马达中框的问题；The reinforcing frame is a cylindrical structure with openings at both ends, and is made of corrosion-resistant plastic. Its function is to prevent the dripping liquid from corroding the aluminum alloy casing of the motor of the permanent magnet canned pump, but it also limits the heat dissipation capacity of the motor casing; The front flange of the reinforcement frame is used to lock the front cover tightly and tightly seal the front flange of the rear cover to ensure zero leakage of corrosive liquid. Stainless steel bolts and nuts are used to avoid screw tooth corrosion when locking, that is, screw teeth The hole is installed on the front flange of the reinforced frame, so there will be no problem of liquid medicine penetrating into the middle frame of the aluminum alloy motor along the screw teeth gap;
在进行泵浦组装之前，会先进行永磁马达组装，首先，把马达中框安装在强化框内的径向环形肋板分隔出来的前段空间中；马达后框会安装在环形肋板分隔出来的后段空间中；其中，会先把内含绕组的中框与后框紧锁贴合在一起，包含绕组的电源线连结到马达后框的电气盒之端子台，这时强化框内径之径向环形肋板将被二者夹紧，且复数个定位块将嵌入中框的后端面的卡槽中，确保三者能结合成一体，而且铝合金中框的前端面的外缘还装设有一O形环；Before the pump assembly, the permanent magnet motor assembly will be carried out first. First, the motor middle frame will be installed in the front space separated by the radial annular rib in the reinforcement frame; the motor rear frame will be installed in the annular rib separated. Among them, the middle frame containing the winding and the rear frame will be locked together first, and the power line containing the winding will be connected to the terminal block of the electrical box of the motor rear frame. At this time, the inner diameter of the strengthening frame The radial annular ribs will be clamped by the two, and a plurality of positioning blocks will be embedded in the slots on the rear end surface of the middle frame to ensure that the three can be combined into one, and the outer edge of the front surface of the aluminum alloy middle frame is also fitted is provided with an O-ring;
接着进行泵浦组装时，把叶轮与马达转子结合成一体放入后盖容室空间中，强化框的前端面法兰用来紧锁前盖并紧压密封后盖的前法兰部，且中框的前端面也能紧压在后盖法兰部的背面，而且O形环除了会紧压住后盖的法兰部后侧面外，也将滴落药液隔离而不会腐蚀铝合金中框的前端面；中框后端面与马达后框的法兰面也装设有O形环来二次保护定子线圈组；强化框的底部为一平板结构之泵浦固定底座；也就是滴落药液暨不会经由螺牙缝隙渗入铝合金外壳，也不会因沿外表面滴流接触底座附近的铝合金外壳，后框的电气盒与电源线接头都会受到保护；Then when the pump is assembled, the impeller and the motor rotor are integrated into the space of the back cover chamber, the front flange of the reinforcement frame is used to lock the front cover and tightly seal the front flange of the back cover, and The front end of the middle frame can also be pressed tightly against the back of the flange of the back cover, and the O-ring will not only press the rear side of the flange of the back cover tightly, but also isolate the dripping liquid without corroding the aluminum alloy The front face of the middle frame; the rear end face of the middle frame and the flange surface of the rear frame of the motor are also equipped with O-rings to protect the stator coil group for the second time; the bottom of the reinforced frame is a pump fixing base with a flat structure; The falling liquid will not penetrate into the aluminum alloy shell through the gap of the screw teeth, nor will it touch the aluminum alloy shell near the base due to dripping along the outer surface, and the electrical box and power cord connector of the rear frame will be protected;
其次，针对马达散热方案的创新作法说明如下：Secondly, the innovative approach to the motor cooling solution is explained as follows:
马达散热方案的关键在确保由定子绕组产生的热能在不降低热传导速率下到达散热鳍片，并且散热鳍片有足够的面积来进行散热；本创作利用铝合金的高热传导系数约为硅钢片的四倍，马达定子绕组产生的热由其绕组的齿部径向经由定子轭部向外传递时，在二者接口接触时会因表面粗糙度与绝缘凡力水等影响而增加一些热阻，首先，铝合金中框的径向截面积不小于定子硅钢片积厚外径的圆筒面积的四分之一，也就是中框的径向截面积能维持由硅钢片传导出来的热量有低的热传导阻力；其二，加上中框的轴向长度短，使得硅钢片积厚外径的温度与中框后端只有小的温差，也就是定子产生的热量能顺利传递到铝合金中框后端；其三，中框的杯状底部中心有一用来穿递绕组电力线的开孔，其直径小于后盖圆筒部外径10％以上，也就是中框底部的后端面有大接触面用来把热传递给后框；其四，后框为圆盘状结构，其中心有向内侧突出的轴支撑座外，其外侧装设有足够散热面积的垂直散热鳍片与接线盒，这些散热表面积至少为定子积厚圆筒面积的四倍以上，才能顺利且及时把热量都经由自然对流机制散失到空气中；The key to the motor heat dissipation solution is to ensure that the heat generated by the stator winding reaches the heat dissipation fins without reducing the heat transfer rate, and the heat dissipation fins have enough area to dissipate heat; this creation uses the high thermal conductivity of aluminum alloy to be about that of silicon steel sheet Four times, when the heat generated by the motor stator winding is transferred radially from the teeth of the winding through the stator yoke, some thermal resistance will be increased due to the influence of surface roughness and insulating varnish when the two interfaces are in contact. First of all, the radial cross-sectional area of the aluminum alloy middle frame is not less than a quarter of the cylindrical area of the thick outer diameter of the stator silicon steel sheet, that is, the radial cross-sectional area of the middle frame can keep the heat conduction from the silicon steel sheet low Second, coupled with the short axial length of the middle frame, there is only a small temperature difference between the temperature of the thick outer diameter of the silicon steel sheet and the rear end of the middle frame, that is, the heat generated by the stator can be smoothly transferred to the aluminum alloy middle frame Rear end; Third, there is an opening in the center of the cup-shaped bottom of the middle frame for passing the winding power line, and its diameter is less than 10% of the outer diameter of the cylindrical part of the back cover, that is, the rear end surface of the bottom of the middle frame has a large contact surface It is used to transfer heat to the rear frame; fourth, the rear frame is a disc-shaped structure, the center of which has a shaft support seat protruding inward, and the outer side is equipped with vertical fins and junction boxes with sufficient heat dissipation area. The heat dissipation surface area is at least four times the area of the thickened cylinder of the stator, so that the heat can be dissipated into the air smoothly and timely through the natural convection mechanism;
除了有足够散热面积以外，散热鳍片表面的自然对流速度也是重要因素，强化框的后端为一具有下方圆弧开口的圆形开口，其下方圆弧开口能使后框的散热鳍片的下半部露出，使散热鳍片表面的冷空气容易进行由下而上的自然对流吸热，上升的热空气由强化框的后端顶部向外流出，而下方圆弧开口也方便接线盒连接电源线，而圆形开口的长度涵盖接线盒及散热鳍片的后侧，且下方圆弧开口高度只及于盖接线盒的下方，所以能提供散热鳍片与接线盒足够保护。In addition to sufficient heat dissipation area, the natural convection velocity on the surface of the heat dissipation fins is also an important factor. The rear end of the reinforced frame is a circular opening with a lower arc opening, which can make the heat dissipation fins of the rear frame more stable. The lower part is exposed, so that the cold air on the surface of the cooling fins can easily absorb heat from bottom to top, and the rising hot air flows out from the top of the rear end of the reinforced frame, and the arc opening at the bottom is also convenient for connecting the junction box The length of the circular opening covers the rear side of the junction box and the heat dissipation fins, and the height of the lower arc opening is only below the junction box cover, so it can provide sufficient protection for the heat dissipation fins and junction box.
附图说明Description of drawings
图1：系本发明用于PCB制程的过滤系统结构示意图。Fig. 1: It is a structural schematic diagram of the filtration system used in the PCB manufacturing process according to the present invention.
图2：系本发明具强化框保护的永磁罐装泵浦结构示意图。Fig. 2: It is a schematic structural diagram of the permanent magnet canned pump with reinforced frame protection of the present invention.
图3：系本发明强化框3D结构示意图。Fig. 3 is a schematic diagram of the 3D structure of the reinforced frame of the present invention.
图4：系本发明罐装马达散热路径示意图。Fig. 4 is a schematic diagram of the cooling path of the canned motor of the present invention.
图5：系本发明散热鳍片与接线盒结构3D示意图。Fig. 5 is a 3D schematic diagram of the heat dissipation fin and junction box structure of the present invention.
图6：系本发明马达中框结构示意图。Fig. 6: It is a structural schematic diagram of the middle frame of the motor of the present invention.
主要组件符号说明Explanation of main component symbols
1：过滤系统113：过滤筒114：脚架1: Filtration system 113: Filter cartridge 114: Foot stand
115：上盖116：过滤筒出口12：磁驱动泵115: upper cover 116: filter cartridge outlet 12: magnetic drive pump
121：泵入口122：泵出口123：保护罩121: pump inlet 122: pump outlet 123: protective cover
124：铸铁托架3：固定轴31：三脚架124: cast iron bracket 3: fixed shaft 31: tripod
4：泵前盖41：后盖411：法兰部4: Pump front cover 41: Back cover 411: Flange part
413：轴孔座414：止推环415：容室空间413: shaft hole seat 414: thrust ring 415: chamber space
44：入口45：出口46：止推环44: inlet 45: outlet 46: thrust ring
47：流道空间5：叶轮52：叶轮毂47: runner space 5: impeller 52: impeller hub
53：止推轴承54：叶轮毂孔6：流动方向53: Thrust bearing 54: Impeller hub hole 6: Flow direction
61：流动方向62：流动方向65：流动方向61: flow direction 62: flow direction 65: flow direction
66：热传路径67：热传路径68：热传路径66: heat transfer path 67: heat transfer path 68: heat transfer path
69：自然对流路径69a：自然对流路径69b：自然对流路径69: natural convection path 69a: natural convection path 69b: natural convection path
69c：自然对流路径7：马达转子74：转子包胶69c: natural convection path 7: motor rotor 74: rotor lagging
76：轴向延伸部79：轴承8：罐装马达76: Axial extension 79: Bearing 8: Canned motor
81：中框811：前端面811a：外缘81: middle frame 811: front surface 811a: outer edge
812：后端812a：开口813：卡槽812: rear end 812a: opening 813: card slot
82：后框821：鳍片822：接线盒82: rear frame 821: fins 822: junction box
823：接头824：轴支撑座825：端子台823: connector 824: shaft support seat 825: terminal block
826：接线盒盖83：定子9：强化框826: Junction box cover 83: Stator 9: Reinforcement frame
911：前法兰911a：凹环912：固定底座911: Front flange 911a: Recessed ring 912: Fixed base
913：后端913a：上半部圆弧913b：下方圆弧开口913: rear end 913a: upper half arc 913b: lower arc opening
914：前段空间915：后段空间916：环形肋板914: front section space 915: back section space 916: annular rib
917：定位块917: positioning block
具体实施方式detailed description
请参阅图2所示，本实施例之具强化框保护的永磁罐装泵浦结构示意图，主要零件包含有：泵前盖4、三脚架31、叶轮5、后盖41、固定轴3与罐装马达8，其中：Please refer to Figure 2, which is a schematic structural diagram of a permanent magnet canned pump with reinforced frame protection in this embodiment. The main parts include: pump front cover 4, tripod 31, impeller 5, rear cover 41, fixed shaft 3 and tank Install motor 8, wherein:
泵前盖4设有一入口44、出口45及一流道空间47，用来容纳叶轮5，泵前盖4内侧在入口44处设有一入口止推环46，用来与叶轮5入口侧的叶轮止推轴承53耦合共同构成轴向止推轴承，泵前盖4与强化框9之前法兰911相结合，用来固定密封后盖41之法兰部411；The pump front cover 4 is provided with an inlet 44, an outlet 45 and a channel space 47 for accommodating the impeller 5, and the inner side of the pump front cover 4 is provided with an inlet thrust ring 46 at the inlet 44 to stop the impeller on the inlet side of the impeller 5. The push bearings 53 are coupled together to form an axial thrust bearing, and the pump front cover 4 is combined with the flange 911 in front of the reinforcement frame 9 to fix and seal the flange part 411 of the back cover 41;
三脚架31系固定在泵前盖4入口处，可以轴向穿过叶轮毂孔54，用来支撑固定轴3的一端；The tripod 31 is fixed at the entrance of the pump front cover 4, and can axially pass through the impeller hub hole 54 to support one end of the fixed shaft 3;
叶轮5被安装在泵前盖4内部，叶轮毂52用来与马达转子7的轴向延伸部76结合，使叶轮5与马达转子7构成一体或二者相互嵌入组合成一体；The impeller 5 is installed inside the pump front cover 4, and the impeller hub 52 is used to combine with the axial extension 76 of the motor rotor 7, so that the impeller 5 and the motor rotor 7 form a whole or the two are embedded and combined into one;
后盖41为一杯状壳体结构，底部有轴孔座413且无任何通孔，确保后盖41不会有何泄漏产生，其前端之法兰部411结合泵前盖4及强化框9之前法兰911，用来防止腐蚀液体的泄漏；轴孔座413设在后盖底部中心其外缘装设有止推环414，用来与马达转子7的轴承79(配合图4)耦合成轴向止推轴承，轴孔座413的外侧壁面完全由马达后框82的轴支撑座824(配合图4)所紧密结合与支持；The back cover 41 is a cup-shaped shell structure with a shaft hole seat 413 and no through holes at the bottom to ensure that the back cover 41 will not have any leakage. Flange 911 is used to prevent the leakage of corrosive liquid; the shaft hole seat 413 is located at the center of the bottom of the back cover, and its outer edge is equipped with a thrust ring 414, which is used to couple with the bearing 79 of the motor rotor 7 (cooperate with Figure 4) to form a shaft To the thrust bearing, the outer wall surface of the shaft hole seat 413 is completely combined and supported by the shaft support seat 824 (cooperating with FIG. 4 ) of the motor rear frame 82;
固定轴3为双边支撑结构，由耐腐蚀与耐磨耗的陶瓷材料构成，其前端由三脚架31支撑与后端由轴向伸出的轴孔座413所支撑固定，固定轴3中间部份与轴承79(配合图4)耦合用来支撑马达转子7的转动；The fixed shaft 3 is a double-sided supporting structure, which is made of corrosion-resistant and wear-resistant ceramic materials. The bearing 79 (cooperating with Fig. 4) is coupled to support the rotation of the motor rotor 7;
罐装马达8由定子83、马达转子7、强化框9、中框81与后框82所构成；The canned motor 8 is composed of a stator 83, a motor rotor 7, a strengthening frame 9, a middle frame 81 and a rear frame 82;
定子83紧固装设在马达中框81内，其上绕有线圈输入PWM电源可以产生磁通用来与马达转子7磁场交互作用，使马达转子7产生扭矩而旋转并带动叶轮5输出流功，定子83的线圈受泵浦后盖41保护免于腐蚀液体侵蚀；The stator 83 is fastened in the middle frame 81 of the motor, and a coil is wound on it to input PWM power to generate flux to interact with the magnetic field of the motor rotor 7, so that the motor rotor 7 generates torque to rotate and drives the impeller 5 to output flow power. The coils of the stator 83 are protected from corrosive liquids by the pump back cover 41;
马达转子7是由主磁铁组、主轭铁与轴向延伸部76所构成的环型结构，并由耐腐蚀的工程塑料包覆成一零泄漏缝的环状转子包胶74(配合图4)，马达转子7的中间孔装设有轴承79(配合图4)，叶轮毂52用来与马达转子7的轴向延伸部76结合，使叶轮5与马达转子7构成一体或二者相互嵌入组合成一体；The motor rotor 7 is a ring-shaped structure composed of the main magnet group, the main yoke and the axial extension 76, and is covered with corrosion-resistant engineering plastics to form a ring-shaped rotor rubber-coated 74 with zero leakage (see Figure 4 ), the middle hole of the motor rotor 7 is equipped with a bearing 79 (cooperating with Fig. 4), and the impeller hub 52 is used to combine with the axial extension 76 of the motor rotor 7, so that the impeller 5 and the motor rotor 7 form one body or both are embedded in each other combine into one
强化框9为两端开口之圆筒状结构，由耐腐蚀塑料制成，其前端面法兰911用来紧锁泵前盖4并以凹环911a(配合图3)紧压后盖法兰部411，以紧迫其O形环确保腐蚀液体零泄漏，紧锁时采用不锈钢螺栓与螺帽以避免螺牙腐蚀，也就是螺牙孔是装设在强化框的前端面法兰911上，不会有药液沿螺牙缝隙渗入铝合金马达中框81的问题；强化框9的底部为一平板结构之泵浦固定底座912；也就是滴落药液暨不会经由螺牙缝隙渗入铝合金外壳，也不会因沿外表面溢流接触底座附近的铝合金外壳；Reinforcement frame 9 is a cylindrical structure with openings at both ends, made of corrosion-resistant plastic, its front flange 911 is used to lock the pump front cover 4 and press the rear cover flange tightly with concave ring 911a (as shown in Figure 3) part 411, to tighten its O-ring to ensure zero leakage of corrosive liquid. When locking, use stainless steel bolts and nuts to avoid screw tooth corrosion, that is, the screw hole is installed on the front flange 911 of the reinforcement frame, not There will be a problem of liquid medicine infiltrating into the aluminum alloy motor frame 81 along the screw teeth gap; the bottom of the strengthening frame 9 is a flat pump fixing base 912; that is, dripping liquid medicine will not penetrate into the aluminum alloy through the screw tooth gap The outer casing will not touch the aluminum alloy casing near the base due to overflow along the outer surface;
强化框9内径之轴向中间位置又设有一径向环形肋板916(配合图3)，其上设有复数个定位块917(配合图3)；环形肋板把强化框内径空间分隔成前后二段，前段空间914(配合图3)用来紧密安装中框81，后段空间915(配合图3)用来紧密安装后框82；当中框81与后框82紧锁贴合在一起时，径向环形肋板916(配合图3)与复数个定位块917(配合图3)将嵌入中框81的后端面的卡槽813中(配合图6)，确保三者能结合成一体，确保罐装马达8由固定底座912牢牢支撑，且中框81的前端面811也能紧压在后盖法兰部411的背面，而且铝合金中框81的前端面外缘811a(配合图6)能装设有一O形环，能紧压住后盖41的法兰部411后侧面，当药液滴落入强化框9前端面法兰911的接合面时，此一O形环将会把药液隔离而不会腐蚀铝合金中框81的前端面811(配合图6)；A radial annular rib plate 916 (cooperating with Figure 3) is provided at the axial middle position of the inner diameter of the reinforcing frame 9, and a plurality of positioning blocks 917 (cooperating with Figure 3) are arranged on it; the annular rib plate separates the inner diameter space of the reinforcing frame into front and rear The second stage, the front space 914 (cooperate with Figure 3) is used to tightly install the middle frame 81, and the rear space 915 (coordinate with Figure 3) is used to tightly install the rear frame 82; when the middle frame 81 and the rear frame 82 are locked together , the radial annular rib plate 916 (cooperating with Figure 3) and a plurality of positioning blocks 917 (cooperating with Figure 3) will be embedded in the slot 813 of the rear end surface of the middle frame 81 (cooperating with Figure 6), to ensure that the three can be combined into one, Ensure that the canned motor 8 is firmly supported by the fixed base 912, and the front end 811 of the middle frame 81 can also be pressed against the back of the rear cover flange 411, and the outer edge 811a of the front end of the aluminum alloy middle frame 81 (with 6) An O-ring can be installed, which can tightly press the rear side of the flange portion 411 of the back cover 41. When the medicinal liquid drops into the joint surface of the flange 911 on the front end of the reinforcement frame 9, this O-ring will It will isolate the liquid medicine without corroding the front surface 811 of the aluminum alloy middle frame 81 (cooperate with Figure 6);
中框81被组装在强化框9内部时，其前端面811用来迫紧后盖法兰部411的背侧，且前端面外缘811a(配合图6)装设的O形环可以防止腐蚀液体的渗入，中框81后端812有杯状开口812a(配合图6)的底部有大的热传面积，用来紧锁后框82以紧密固定在强化框9内部，中框81的厚度能充份传导热量到后框82之鳍片821与接线盒822；When the middle frame 81 is assembled inside the reinforcement frame 9, its front end face 811 is used to tighten the back side of the flange part 411 of the back cover, and the O-ring installed on the front end face outer edge 811a (cooperating with Fig. 6 ) can prevent corrosion Infiltration of liquid, the rear end 812 of the middle frame 81 has a cup-shaped opening 812a (cooperating with Figure 6) and the bottom has a large heat transfer area, which is used to lock the rear frame 82 to be tightly fixed inside the reinforcement frame 9. The thickness of the middle frame 81 Can fully conduct heat to the fins 821 and junction box 822 of the rear frame 82;
后框82被组装在强化框9内部时，是被紧锁在中框81后端812有杯状开口812a的底部，其上的鳍片821与接线盒822的表面能以自然对流把热量散逸到空气之中，后框82上的轴支撑座824能提供固定轴3所需的支撑力，定子83线圈之电力线由中框81的杯状开口812a连接到接线盒822之端子台825，再经由接头823外接外部驱动电源缆线；When the rear frame 82 is assembled inside the reinforcing frame 9, it is tightly locked on the bottom of the middle frame 81 with a cup-shaped opening 812a at the rear end 812, and the fins 821 on it and the surface of the junction box 822 can dissipate heat by natural convection In the air, the shaft support seat 824 on the rear frame 82 can provide the supporting force required for fixing the shaft 3, and the power line of the coil of the stator 83 is connected to the terminal block 825 of the junction box 822 by the cup-shaped opening 812a of the middle frame 81, and then An external drive power cable is externally connected via the connector 823;
当泵浦运转时流体流动方向6流经叶轮5之流道后成为具有压力的流体，如流动方向61，并由泵出口45输出，同时有部分流体，如流动方向62，经由叶轮5的背侧进入后盖41的容室空间415，并经由转子外侧与后盖内径的间隙向后盖底部流动，再经由固定轴3与轴承79之间隙流动，最后流经叶轮毂孔54，如流动方向65，回到叶轮入口，此一流体的循环流动用来提供陶瓷轴承润滑所需并带走转子产生的热；When the pump is running, the fluid flow direction 6 flows through the flow channel of the impeller 5 and becomes a fluid with pressure, such as the flow direction 61, and is output from the pump outlet 45. At the same time, part of the fluid, such as the flow direction 62, passes through the back of the impeller 5. The side enters the chamber space 415 of the rear cover 41, and flows to the bottom of the rear cover through the gap between the outer side of the rotor and the inner diameter of the rear cover, then flows through the gap between the fixed shaft 3 and the bearing 79, and finally flows through the impeller hub hole 54, such as the flow direction 65, back to the inlet of the impeller, the circulating flow of this fluid is used to provide the lubrication of the ceramic bearing and take away the heat generated by the rotor;
请参阅图3所示，本实施例之强化框3D结构示意图，强化框9为两端开口之圆筒状结构，由耐腐蚀塑料制成，有一前端面法兰911并附有凹环911a；强化框9的底部为一平板结构之泵浦固定底座912；强化框9内径之轴向中间位置又设有一径向环形肋板916，其上设有复数个定位块917；环形肋板把强化框内径空间分隔成前后二段，前段空间914用来紧密安装中框81(配合图2)，后段空间915用来紧密安装后框82(配合图2)；强化框的后端913(配合图5)为一具有下方圆弧开口913b的圆形开口913，其下方圆弧开口913b能使后框82(配合图2)的散热鳍片821(配合图2)的下半部露出，而圆形开口913的上半部913a的长度涵盖接线盒822(配合图2)及散热鳍片821(配合图2)的后侧，且下方圆弧开口913b高度只及于盖接线盒822(配合图2)的下方，所以能提供散热鳍片821(配合图2)与接线盒822(配合图2)足够保护。Please refer to Fig. 3, the 3D structure schematic diagram of the reinforced frame of this embodiment, the reinforced frame 9 is a cylindrical structure with openings at both ends, made of corrosion-resistant plastic, with a front flange 911 and a concave ring 911a; The bottom of the strengthening frame 9 is a flat pump fixing base 912; the axial middle position of the inner diameter of the strengthening frame 9 is provided with a radial annular rib 916, and a plurality of positioning blocks 917 are arranged on it; the annular rib strengthens the The frame inner diameter space is divided into front and rear two sections, the front section space 914 is used to tightly install the middle frame 81 (cooperate with Figure 2), and the rear section space 915 is used to tightly install the rear frame 82 (cooperate with Figure 2); the rear end 913 of the reinforced frame (cooperate with Figure 5) is a circular opening 913 with a lower arc opening 913b, the lower arc opening 913b can expose the lower half of the cooling fins 821 (matching Figure 2) of the rear frame 82 (matching Figure 2), and The length of the upper part 913a of the circular opening 913 covers the rear side of the junction box 822 (cooperating with FIG. 2 ) and the heat dissipation fins 821 (cooperating with FIG. 2 ), and the height of the lower arc opening 913b is only as high as the junction box 822 (cooperating with the cover) 2 ), so sufficient protection can be provided for the cooling fins 821 (cooperating with FIG. 2 ) and the junction box 822 (cooperating with FIG. 2 ).
请参阅图4与图5所示，本实施例之罐装马达散热路径示意图与散热鳍片结构3D示意图，本图为罐装马达8剖面结构示意图，其目地在说明热传导机制及散热鳍片821之功能，定子83绕组产生的热由其绕组的齿部径向经由定子83轭部向外传递时，会先传导到中框81，如热传路径66所示，在二者界面会受表面绝缘凡力水等材料的影响而增加一些热阻，首先，铝合金中框81的径向截面积不小于定子83硅钢片积厚外径的圆筒面积的四分之一，利用铝合金的高热传导系数约为硅钢片的四倍，也就是中框81的径向截面积能维持由定子83传导出来的热量，如热传路径66所示，加上中框81的轴向长度短，使得硅钢片积厚外径的温度与中框81后端812维持小的温差，能使定子产生的热量能顺利传递到铝合金中框后端，如热传路径67、热传路径68所示；其次，中框81的杯状底部的后端面812有大接触面，其面积至少为中框81径向截面积的1.5倍以上，用来把热传递给后框82，如热传路径67、热传路径68所示；后框82为圆盘状结构，其中心有向内侧突出的轴支撑座824外，其外侧装设有足够散热面积的垂直散热鳍片821与接线盒822，这些散热表面积至少为定子83积厚圆筒面积的四倍以上，才能顺利且及时把热量都经由自然对流积制散失到空气中，如自然对流路径69所示；Please refer to FIG. 4 and FIG. 5, the schematic diagram of the heat dissipation path of the canned motor and the 3D schematic diagram of the heat dissipation fin structure in this embodiment. This figure is a schematic cross-sectional structure diagram of the canned motor 8, and its purpose is to illustrate the heat conduction mechanism and the heat dissipation fins 821 When the heat generated by the windings of the stator 83 is transferred radially from the teeth of the windings outwards through the yoke of the stator 83, it will first be conducted to the middle frame 81, as shown in the heat transfer path 66, and will be affected by the surface The thermal resistance is increased due to the influence of materials such as insulating varnish. First, the radial cross-sectional area of the aluminum alloy middle frame 81 is not less than a quarter of the cylindrical area of the thick outer diameter of the stator 83 silicon steel sheet. Using the aluminum alloy The high thermal conductivity is about four times that of the silicon steel sheet, that is, the radial cross-sectional area of the middle frame 81 can maintain the heat conducted by the stator 83, as shown in the heat transfer path 66, and the axial length of the middle frame 81 is short, The temperature difference between the thick outer diameter of the silicon steel sheet and the rear end 812 of the middle frame 81 is kept small, so that the heat generated by the stator can be smoothly transferred to the rear end of the aluminum alloy middle frame, as shown in the heat transfer path 67 and the heat transfer path 68 Secondly, the rear end surface 812 of the cup-shaped bottom of the middle frame 81 has a large contact surface, and its area is at least 1.5 times of the radial cross-sectional area of the middle frame 81, which is used to transfer heat to the rear frame 82, such as the heat transfer path 67 , as shown in the heat transfer path 68; the rear frame 82 is a disc-shaped structure, the center of which has an inwardly protruding shaft support seat 824, and its outer side is equipped with a vertical heat dissipation fin 821 and a junction box 822 with sufficient heat dissipation area. The heat dissipation surface area is at least four times the thick cylinder area of the stator 83, so that the heat can be dissipated into the air smoothly and in time through natural convection, as shown in the natural convection path 69;
除了有足够散热面积以外，散热鳍片821表面的自然对流速度也是重要因素，强化框的后端为一具有下方圆弧开口的圆形开口，其下方圆弧开口能使马达后框的散热鳍片的下半部露出，使散热鳍片表面的冷空气容易进行由下而上的自然对流吸热，上升的热空气由强化框的后端顶部向外流出，如自然对流路径69之69a、69b、69c所示。In addition to sufficient heat dissipation area, the natural convection velocity on the surface of the heat dissipation fins 821 is also an important factor. The rear end of the reinforced frame is a circular opening with a lower arc opening, which can make the heat dissipation fins of the motor rear frame The lower half of the sheet is exposed, so that the cold air on the surface of the heat dissipation fins is easy to carry out natural convection heat absorption from bottom to top, and the rising hot air flows out from the top of the rear end of the reinforced frame, such as the natural convection path 69-69a, 69b, 69c shown.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110354936.0ACN103104554B (en) | 2011-11-10 | 2011-11-10 | Improvement of anti-corrosion shell structure of permanent magnet canned pump |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110354936.0ACN103104554B (en) | 2011-11-10 | 2011-11-10 | Improvement of anti-corrosion shell structure of permanent magnet canned pump |
| Publication Number | Publication Date |
|---|---|
| CN103104554A CN103104554A (en) | 2013-05-15 |
| CN103104554Btrue CN103104554B (en) | 2016-01-20 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110354936.0AActiveCN103104554B (en) | 2011-11-10 | 2011-11-10 | Improvement of anti-corrosion shell structure of permanent magnet canned pump |
| Country | Link |
|---|---|
| CN (1) | CN103104554B (en) |
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| CN108343638B (en)* | 2018-04-20 | 2024-11-08 | 南京百益恒安生物科技有限公司 | A high acid and alkali resistance water pump housing and casting method thereof |
| CN115163504B (en)* | 2021-04-07 | 2025-02-11 | 日益电机股份有限公司 | Canned magnetic pump for improved heat dissipation |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4013384A (en)* | 1974-07-18 | 1977-03-22 | Iwaki Co., Ltd. | Magnetically driven centrifugal pump and means providing cooling fluid flow |
| US5184945A (en)* | 1991-12-27 | 1993-02-09 | Assoma, Inc. | Bushing structure for using in magnetically driving centrifugal pumps |
| US5464333A (en)* | 1993-06-24 | 1995-11-07 | Iwaki Co., Ltd. | Magnet pump with rear thrust bearing member |
| US5641275A (en)* | 1995-01-26 | 1997-06-24 | Ansimag Inc. | Grooved shaft for a magnetic-drive centrifugal pump |
| CN1320196A (en)* | 1999-08-10 | 2001-10-31 | 株式会社岩崎 | Magnet pump |
| US20040131485A1 (en)* | 2003-01-08 | 2004-07-08 | Assoma Inc. | Sealed magnetic drive sealless pump |
| JP2006138281A (en)* | 2004-11-15 | 2006-06-01 | Ogihara Seisakusho:Kk | Cylinder-shaped magnet type pump |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201038828A (en)* | 2009-04-28 | 2010-11-01 | Assoma Inc | Permanent magnetism can pump |
| TWM369391U (en)* | 2009-04-28 | 2009-11-21 | Assoma Inc | Improved structure of permanent-magnet bottle-packaged pump |
| JP2011052569A (en)* | 2009-08-31 | 2011-03-17 | Yamada Seisakusho Co Ltd | Water pump and method of installing the same |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4013384A (en)* | 1974-07-18 | 1977-03-22 | Iwaki Co., Ltd. | Magnetically driven centrifugal pump and means providing cooling fluid flow |
| US5184945A (en)* | 1991-12-27 | 1993-02-09 | Assoma, Inc. | Bushing structure for using in magnetically driving centrifugal pumps |
| US5464333A (en)* | 1993-06-24 | 1995-11-07 | Iwaki Co., Ltd. | Magnet pump with rear thrust bearing member |
| US5641275A (en)* | 1995-01-26 | 1997-06-24 | Ansimag Inc. | Grooved shaft for a magnetic-drive centrifugal pump |
| CN1320196A (en)* | 1999-08-10 | 2001-10-31 | 株式会社岩崎 | Magnet pump |
| US20040131485A1 (en)* | 2003-01-08 | 2004-07-08 | Assoma Inc. | Sealed magnetic drive sealless pump |
| JP2006138281A (en)* | 2004-11-15 | 2006-06-01 | Ogihara Seisakusho:Kk | Cylinder-shaped magnet type pump |
| Publication number | Publication date |
|---|---|
| CN103104554A (en) | 2013-05-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |