CN116197105A

Movatterモバイル変換

Info

Publication number: CN116197105A
Application number: CN202310228528.3A
Authority: CN
Inventors: 董晓妍
Original assignee: Shenyang Water Double Carbon Technology Industry Research Institute Co ltd
Current assignee: Shenyang Water Double Carbon Technology Industry Research Institute Co ltd
Priority date: 2023-03-10
Filing date: 2023-03-10
Publication date: 2023-06-02

Abstract

Translated fromChinese

本发明公开了一种工程渣土筛分装置及其使用方法，涉及工程筛分技术领域，该装置包括筛分箱和设置在其下端四个边角位置的支腿，所述筛分箱上端中间位置设有进料口，进料口下端设有下料管，所述进料口上端设有用于加料的加料斗，所述筛分箱内部设有一个可以沿着筛分箱内壁滑动的滑动环，所述滑动环上端设有用于对土块进行筛分的过滤锥板，所述滑动环外侧的筛分箱上设有出料口，本申请针对现有装置的弊端进行改进，保留了现有技术中锥形过滤结构的优点，这里通过将在锥形过滤结构四周堆积的大体积土块引导入回料机构中，不仅可以对大体积土块进行粉碎处理，还将粉碎后的土块送回加料斗中，实现了循环筛分，保证了筛分效果。

The invention discloses an engineering slag screening device and a method for using it, and relates to the technical field of engineering screening. The device includes a screening box and legs arranged at four corners of its lower end. The upper end of the screening box is The middle position is provided with a feeding port, the lower end of the feeding port is provided with a feeding pipe, the upper end of the feeding port is provided with a feeding hopper for feeding, and the inside of the screening box is provided with a screen that can slide along the inner wall of the screening box. Sliding ring, the upper end of the sliding ring is provided with a filter cone plate for screening soil clods, and the screening box outside the sliding ring is provided with a discharge port. This application improves the disadvantages of the existing device and retains In order to avoid the advantages of the conical filter structure in the prior art, here, by guiding the large-volume soil clods accumulated around the conical filter structure into the return mechanism, not only the large-volume soil clods can be crushed, but also the crushed The soil clods are sent back to the feeding hopper, which realizes the circular screening and ensures the screening effect.

Description

Translated fromChinese

一种工程渣土筛分装置及其使用方法An engineering slag screening device and its application method

技术领域technical field

本发明涉及工程筛分技术领域，具体是一种工程渣土筛分装置及其使用方法。The invention relates to the technical field of engineering screening, in particular to an engineering dregs screening device and a method for using the same.

背景技术Background technique

渣土只是建筑垃圾的一种，渣土是指建设单位、施工单位新建、改建、扩建和拆除各类建筑物、构筑物、管网等以及居民装饰装修房屋过程中所产生的弃土、弃料及其它废弃物。目前，操作人员在对工程渣土物料进行处理的时候，经常需要使用到筛分机，从而便于操作人员的处理作业，而现有的筛分机在实际使用的过程中，尽管可以实现基本的筛分效果，但是其在对渣土物料进行筛分的时候，大颗粒的渣土物料将会残留在筛分结构的上方，并聚集在筛分结构的外侧，导致筛分结构的外侧筛分速度变慢，从而降低了该装置整体的筛分速率，针对此种问题，现有专利公告号为CN216827184U的专利中公布了一种体是工程渣土物料，该装置通过将过滤网设置成锥形，然后将大颗粒土块向四周堆积，小体积的土块会穿过过滤网，这种改进的好处是使得大体积杂质不会影响过滤面，但是长时间的积累后，过滤网的过滤面仍然会遭受影响，基于此，现在提供一种工程渣土筛分装置及其使用方法，可以消除现有装置存在的弊端。Slag is only a kind of construction waste. Slag refers to the spoils, waste materials and materials produced by construction units, construction units, new construction, reconstruction, expansion and demolition of various buildings, structures, pipe networks, etc., as well as residents' decoration and decoration of houses. other waste. At present, operators often need to use screening machines when processing engineering muck materials, so as to facilitate the processing operations of operators. However, in the actual use of existing screening machines, although basic screening can be achieved effect, but when it sieves the slag material, the large-grained slag material will remain above the screening structure and gather on the outside of the screening structure, resulting in a change in the screening speed outside the screening structure. slow, thereby reducing the overall screening rate of the device. For this problem, the existing patent announcement number is CN216827184U, which discloses a material that is engineering muck. Then pile up the large-grained soil clods around, and the small-sized soil clods will pass through the filter screen. The advantage of this improvement is that the large-volume impurities will not affect the filter surface, but after long-term accumulation, the filter surface of the filter screen is still Will be affected, based on this, now provide an engineering slag screening device and its use method, which can eliminate the disadvantages of the existing device.

发明内容Contents of the invention

本发明的目的在于提供一种工程渣土筛分装置及其使用方法，以解决背景技术中的问题。The object of the present invention is to provide an engineering dregs screening device and its use method to solve the problems in the background technology.

为实现上述目的，本发明提供如下技术方案：To achieve the above object, the present invention provides the following technical solutions:

一种工程渣土筛分装置，包括筛分箱和设置在其下端四个边角位置的支腿，所述筛分箱上端中间位置设有进料口，进料口下端设有下料管，所述进料口上端设有用于加料的加料斗，所述筛分箱内部设有一个可以沿着筛分箱内壁滑动的滑动环，所述滑动环上端设有用于对土块进行筛分的过滤锥板，所述滑动环外侧的筛分箱上设有出料口，出料口所在的筛分箱外侧设有用于收集大颗粒土块的缓存箱，所述缓存箱底部为左低右高的斜面，所述缓存箱上设有用于对大体积土块进行粉碎并送回的回料机构，所述筛分箱下端设有用于将合格土块送出的送料机构。An engineering dregs screening device, comprising a screening box and legs arranged at the four corners of the lower end of the screening box, a feeding port is provided in the middle of the upper end of the screening box, and a feeding pipe is provided at the lower end of the feeding port , the upper end of the feed inlet is provided with a hopper for feeding, the inside of the screening box is provided with a sliding ring that can slide along the inner wall of the screening box, and the upper end of the sliding ring is provided with a The filter cone plate, the screening box outside the sliding ring is provided with a discharge port, and the outside of the screening box where the discharge port is located is provided with a buffer box for collecting large particles of soil. The bottom of the buffer box is left lower On the inclined surface on the right side, the buffer box is provided with a return mechanism for crushing large-volume soil clods and returning them, and the lower end of the screening box is provided with a feeding mechanism for sending out qualified soil clods.

在上述技术方案的基础上，本发明还提供以下可选技术方案：On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

在一种可选方案中：所述回料机构包括设置在缓存箱左上端的提升筒，所述提升筒下端延伸至缓存箱内部，所述提升筒内部同轴设有一个提升轴，提升轴上端连接用于带动其转动的驱动电机，所述驱动电机安装在提升筒的顶部，提升筒内部的提升轴外侧设有用于推动土块上升的提升叶片，所述提升筒上端出料口通过引导管道与加料斗内壁连通，所述提升轴下端穿出缓存箱底部，位于提升筒外侧的提升轴表面阵列分布有粉碎刀组。In an optional solution: the material return mechanism includes a lifting cylinder arranged at the upper left end of the buffer box, the lower end of the lifting cylinder extends to the inside of the buffer box, a lifting shaft is coaxially arranged inside the lifting cylinder, and the upper end of the lifting shaft Connect the driving motor for driving it to rotate, the driving motor is installed on the top of the lifting cylinder, the lifting shaft inside the lifting cylinder is provided with lifting blades for pushing the soil block up, and the discharge port at the upper end of the lifting cylinder passes through the guide pipe It communicates with the inner wall of the hopper, the lower end of the lifting shaft passes through the bottom of the buffer box, and the surface of the lifting shaft outside the lifting cylinder is distributed with crushing knives in an array.

在一种可选方案中：所述粉碎刀组所在的缓存箱设有排料口，排料口位置设有活动门。In an optional solution: the buffer box where the crushing knife group is located is provided with a discharge port, and a movable door is provided at the discharge port.

在一种可选方案中：所述送料机构包括设置在筛分箱内部的送料通道，所述送料通道为上端开口的半筒体结构，所述送料通道右端延伸出筛分箱右侧，所述筛分箱右侧设有与送料通道相配合的穿口，所述送料通道中同轴设有一个送料轴，所述送料轴左端通过传动件与提升轴传动连接，所述送料通道内部的送料轴表面分布有用于推动物料的送料叶片。In an optional solution: the feeding mechanism includes a feeding channel arranged inside the screening box, the feeding channel is a semi-cylindrical structure with an upper end open, and the right end of the feeding channel extends out of the right side of the screening box, so The right side of the screening box is provided with an opening matching the feeding channel, and a feeding shaft is coaxially provided in the feeding channel, and the left end of the feeding shaft is connected to the lifting shaft through a transmission member. Feeding blades for pushing materials are distributed on the surface of the feeding shaft.

在一种可选方案中：所述送料通道上方设有用于对合格土块进行引导收集的集料斗，所述集料斗上端与滑动块连接，所述集料斗下端口与送料通道接料区域相对应。In an optional solution: a collecting hopper for guiding and collecting qualified soil blocks is provided above the feeding channel, the upper end of the collecting hopper is connected with the sliding block, and the lower port of the collecting hopper is connected to the receiving area of the feeding channel correspond.

在一种可选方案中：所述筛分箱和过滤锥板之间设有缓冲件，通过缓冲件将过滤锥板浮动式设置，使得土块对过滤锥板撞击得以缓冲；所述缓冲件包括设置在滑动块下端的若干个导向杆，所述筛分箱内壁设有一个滑动套，所述滑动套与导向杆滑动设置，所述滑动套与滑动块之间通过缓冲弹簧连接固定。In an optional solution: a buffer is provided between the screening box and the filter cone, and the filter cone is floated through the buffer, so that the impact of the soil block on the filter cone can be buffered; the buffer It includes several guide rods arranged at the lower end of the sliding block, a sliding sleeve is provided on the inner wall of the screening box, the sliding sleeve and the guiding rod are slidably arranged, and the sliding sleeve and the sliding block are connected and fixed by a buffer spring.

在一种可选方案中：所述筛分箱内部还设有用于带动过滤锥板上下抖动以提高筛分效果的抖动件，所述抖动件包括设置在导向杆下端的抵压杆，所述抵压杆侧面转动设有一个抵压轮，所述抵压轮所在的送料轴上设有一个振动盘，所述振动盘外侧分布有若干个用于对抵压杆产生推动力的凸起。In an optional solution: the inside of the screening box is also provided with a shaking part for driving the filter cone to shake up and down to improve the screening effect, and the shaking part includes a pressing rod arranged at the lower end of the guide rod. A pressure roller is provided for the side rotation of the pressure rod, and a vibrating plate is arranged on the feeding shaft where the pressure wheel is located, and several protrusions for generating a driving force for the pressure rod are distributed on the outside of the vibration plate.

在一种可选方案中：所述传动件包括设置在提升轴下端的第一传动轮和设置在送料轴左端的第二传动轮，所述第一传动轮与第二传动轮相互啮合。In an optional solution: the transmission member includes a first transmission wheel arranged at the lower end of the lifting shaft and a second transmission wheel arranged at the left end of the feeding shaft, and the first transmission wheel and the second transmission wheel mesh with each other.

相较于现有技术，本发明的有益效果如下：Compared with the prior art, the beneficial effects of the present invention are as follows:

本申请针对现有装置的弊端进行改进，保留了现有技术中锥形过滤结构的优点，这里通过将在锥形过滤结构四周堆积的大体积土块引导入回料机构中，不仅可以对大体积土块进行粉碎处理，还将粉碎后的土块送回加料斗中，实现了循环筛分，保证了筛分效果。This application improves on the drawbacks of the existing devices, and retains the advantages of the conical filter structure in the prior art. Here, by guiding the large-volume soil clods accumulated around the conical filter structure into the return mechanism, not only can the large The volumetric soil clods are crushed, and the crushed soil clods are sent back to the hopper to realize circular screening and ensure the screening effect.

附图说明Description of drawings

图1为本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.

图2为本发明内部的结构示意图。Fig. 2 is a schematic diagram of the internal structure of the present invention.

图3为本发明的过滤锥板结构示意图。Fig. 3 is a structural schematic diagram of the filter cone plate of the present invention.

图4为本发明的振动盘和抵压轮的结构示意图。Fig. 4 is a structural schematic diagram of the vibrating plate and the pressing wheel of the present invention.

附图标记注释：筛分箱11、下料管12、加料斗13、驱动电机14、提升叶片15、引导管道16、提升筒17、缓存箱18、抵压轮19、第一传动轮20、抵压杆21、第二传动轮22、振动盘23、送料通道24、送料叶片25、送料轴26、支腿27、集料斗28、导向杆29、滑动套30、缓冲弹簧31、过滤锥板32、粉碎刀组33。Notes on reference numerals:screening box 11,feeding pipe 12,hopper 13,driving motor 14,lifting blade 15,guide pipe 16,lifting cylinder 17,buffer box 18, pressingwheel 19,first transmission wheel 20, Resistingrod 21,second transmission wheel 22, vibratingplate 23,feeding channel 24,feeding blade 25,feeding shaft 26,outrigger 27, collectinghopper 28,guide rod 29, slidingsleeve 30,buffer spring 31,filter cone 32, smashingknife group 33.

具体实施方式Detailed ways

为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

在一个实施例中，如图1-图4所示，一种工程渣土筛分装置，包括筛分箱11和设置在其下端四个边角位置的支腿27，所述筛分箱11上端中间位置设有进料口，进料口下端设有下料管12，所述进料口上端设有用于加料的加料斗13，所述筛分箱11内部设有一个可以沿着筛分箱11内壁滑动的滑动环，所述滑动环上端设有用于对土块进行筛分的过滤锥板32，所述滑动环外侧的筛分箱11上设有出料口，出料口所在的筛分箱11外侧设有用于收集大颗粒土块的缓存箱18，所述缓存箱18底部为左低右高的斜面，所述缓存箱18上设有用于对大体积土块进行粉碎并送回的回料机构，通过回料机构的设置可以将大体积的土块及时处理，并送回筛分，避免出现大体积土块堵塞的问题，所述筛分箱11下端设有用于将合格土块送出的送料机构；In one embodiment, as shown in Figures 1-4, a construction muck screening device includes ascreening box 11 andlegs 27 arranged at four corners of its lower end, the screening box 11 A feed inlet is provided in the middle of the upper end, afeeding pipe 12 is provided at the lower end of the feed inlet, afeeding hopper 13 for feeding is provided at the upper end of the feed inlet, and ascreening box 11 is provided inside which can be screened along the A sliding ring sliding on the inner wall of thebox 11, the upper end of the sliding ring is provided with afilter cone 32 for screening soil blocks, and thescreening box 11 outside the sliding ring is provided with a discharge port, where the discharge port is located. The outside of thescreening box 11 is provided with abuffer box 18 for collecting large-sized soil clods. The bottom of thebuffer box 18 is a slope with a low left and a high right. The return mechanism of the return, through the setting of the return mechanism, the large-volume soil clods can be processed in time and sent back for screening to avoid the problem of large-volume soil block blockage. The lower end of thescreening box 11 is provided for the qualified The feeding mechanism for sending out soil blocks;

所述回料机构包括设置在缓存箱18左上端的提升筒17，所述提升筒17下端延伸至缓存箱18内部，所述提升筒17内部同轴设有一个提升轴，提升轴上端连接用于带动其转动的驱动电机14，所述驱动电机14安装在提升筒17的顶部，提升筒17内部的提升轴外侧设有用于推动土块上升的提升叶片15，所述提升筒17上端出料口通过引导管道16与加料斗13内壁连通，所述提升轴下端穿出缓存箱18底部，位于提升筒17外侧的提升轴表面阵列分布有粉碎刀组33，在实际使用时，通过驱动电机14带动提升轴转动，提升轴带动提升叶片15转动，从而将土块沿着提升筒17向上输送，土块会沿着引导管道16滑入加料斗13中，从而完成内循环，提升轴外侧的粉碎刀组33会对土块打碎，从而将大体积的土块进行细化处理，避免出现大体积土块的堆积；The material return mechanism includes alifting cylinder 17 arranged at the upper left end of thebuffer box 18, the lower end of the liftingcylinder 17 extends to the inside of thebuffer box 18, and a lifting shaft is coaxially arranged inside thelifting cylinder 17, and the upper end of the lifting shaft is connected to Thedrive motor 14 that drives its rotation, thedrive motor 14 is installed on the top of thelifting cylinder 17, the outside of the lifting shaft inside thelifting cylinder 17 is provided with alifting blade 15 that is used to promote the rising of the soil block, and the discharge port at the upper end of thelifting cylinder 17 is Theguide pipe 16 communicates with the inner wall of thehopper 13, and the lower end of the lifting shaft passes through the bottom of thebuffer box 18, and the surface array of the lifting shaft positioned outside thelifting cylinder 17 is distributed with a crushingknife group 33. In actual use, the drivingmotor 14 drives The lifting shaft rotates, and the lifting shaft drives thelifting blade 15 to rotate, so that the soil block is transported upwards along thelifting cylinder 17, and the soil block will slide into thefeeding hopper 13 along theguide pipe 16, thereby completing the internal circulation, and the pulverizer on the outside of thelifting shaft Group 33 will break the soil clods, so as to refine the large-volume soil clods and avoid the accumulation of large-volume soil clods;

所述送料机构包括设置在筛分箱11内部的送料通道24，所述送料通道24为上端开口的半筒体结构，所述送料通道24右端延伸出筛分箱11右侧，所述筛分箱11右侧设有与送料通道24相配合的穿口，所述送料通道24中同轴设有一个送料轴26，所述送料轴26左端通过传动件与提升轴传动连接，所述送料通道24内部的送料轴26表面分布有用于推动物料的送料叶片25，在传动件的作用下，送料轴26带动送料叶片25转动，送料叶片25会将送料通道24中收集的土块向右推动，最后排出筛分箱11；The feeding mechanism includes afeeding channel 24 arranged inside thescreening box 11. Thefeeding channel 24 is a semi-cylindrical structure with an upper end opening. The right end of thefeeding channel 24 extends out of the right side of thescreening box 11. The screening The right side of thebox 11 is provided with an opening matching with thefeed passage 24, and afeed shaft 26 is coaxially arranged in thefeed passage 24, and the left end of thefeed shaft 26 is connected to the lifting shaft through a transmission member. The surface of thefeeding shaft 26 inside the 24 is distributed withfeeding blades 25 for pushing materials. Under the action of the transmission member, thefeeding shaft 26 drives thefeeding blades 25 to rotate, and thefeeding blades 25 will push the soil clods collected in thefeeding channel 24 to the right. Finally discharge thescreening box 11;

所述送料通道24上方设有用于对合格土块进行引导收集的集料斗28，所述集料斗28上端与滑动块连接，所述集料斗28下端口与送料通道24接料区域相对应，这样就可以保证土块进入送料通道24中；The top of thefeeding channel 24 is provided with acollecting hopper 28 for guiding and collecting qualified soil blocks, the upper end of thecollecting hopper 28 is connected with the sliding block, and the lower port of the collectinghopper 28 corresponds to the receiving area of thefeeding channel 24, so that Just can guarantee that soil block enters in thefeeding channel 24;

所述筛分箱11和过滤锥板32之间设有缓冲件，通过缓冲件将过滤锥板32浮动式设置，使得土块对过滤锥板32撞击得以缓冲；所述缓冲件包括设置在滑动块下端的若干个导向杆29，所述筛分箱11内壁设有一个滑动套30，所述滑动套30与导向杆29滑动设置，所述滑动套30与滑动块之间通过缓冲弹簧31连接固定，这样就可以使得滑动块沿着导向杆29上下浮动；A buffer is provided between thescreening box 11 and thefilter cone 32, and thefilter cone 32 is floatingly arranged by the buffer, so that the impact of the soil block on thefilter cone 32 can be buffered; the buffer includes a slidingSeveral guide rods 29 at the lower end of the block, the inner wall of thescreening box 11 is provided with asliding sleeve 30, thesliding sleeve 30 is slidably arranged with theguide rod 29, and thesliding sleeve 30 is connected with the sliding block by abuffer spring 31 fixed, so that the sliding block can be made to float up and down along theguide bar 29;

所述筛分箱11内部还设有用于带动过滤锥板32上下抖动以提高筛分效果的抖动件，所述抖动件包括设置在导向杆29下端的抵压杆21，所述抵压杆21侧面转动设有一个抵压轮19，所述抵压轮19所在的送料轴26上设有一个振动盘23，所述振动盘23外侧分布有若干个用于对抵压杆21产生推动力的凸起，这样在送料轴26转动时，振动盘23会随着一起转动，振动盘23表面的凸起会对抵压轮19产生推动力，从而使得过滤锥板32可以上下颠簸，提高了对土块的筛分效果；The inside of thescreening box 11 is also provided with a shaking part for driving thefilter cone 32 to shake up and down to improve the screening effect. The shaking part includes apressing rod 21 arranged at the lower end of theguide rod 29, and the pressing rod 21 Apressing wheel 19 is provided for side rotation, and avibrating plate 23 is arranged on thefeeding shaft 26 where thepressing wheel 19 is located, and a plurality of holes for generating a driving force against thepressing rod 21 are distributed on the outside of thevibrating plate 23 . When thefeeding shaft 26 rotates, thevibration plate 23 will rotate together, and the protrusion on the surface of thevibration plate 23 will generate a driving force against thepressing wheel 19, so that thefilter cone plate 32 can be bumped up and down, which improves the vibration resistance. The sieving effect of soil clods;

所述传动件包括设置在提升轴下端的第一传动轮20和设置在送料轴2左端的6第二传动轮22，所述第一传动轮20与第二传动轮22相互啮合；The transmission member includes afirst transmission wheel 20 arranged at the lower end of the lifting shaft and asecond transmission wheel 22 arranged at the left end of the feeding shaft 2, and thefirst transmission wheel 20 and thesecond transmission wheel 22 mesh with each other;

上述实施例公布了一种工程渣土筛分装置及其使用方法，在实际上使用时，将废弃的土块倒入加料斗13中，土块沿着下料管12进入过滤锥板32中间位置，然后沿着中间位置下滑，下滑过程中，合格的土块穿过过滤锥板32，然后被送料机构送出筛分箱11，不合格的土块会沿着过滤锥板32下滑，最后进入缓存箱18中，再沿着缓存箱18底部滑动，最后进入回料机构位置，此时通过驱动电机14带动提升轴转动，提升轴外侧的粉碎刀组33会对土块打碎，从而将大体积的土块进行细化处理，避免出现大体积土块的堆积，提升轴带动提升叶片15转动，从而将土块沿着提升筒17向上输送，土块会沿着引导管道16滑入加料斗13中，从而完成内循环。The above-mentioned embodiment discloses a construction dregs screening device and its use method. In actual use, the discarded soil clods are poured into thefeeding hopper 13, and the soil clods enter the middle of thefilter cone plate 32 along thefeeding pipe 12. position, and then slide down along the middle position. During the sliding process, qualified soil clods pass through thefilter cone 32, and then are sent out of thescreening box 11 by the feeding mechanism, and unqualified soil clods slide down along thefilter cone 32, and finally enter the In thebuffer box 18, slide along the bottom of thebuffer box 18 again, and finally enter the position of the return mechanism. At this time, thedrive motor 14 drives the lifting shaft to rotate, and the pulverizingknife group 33 outside the lifting shaft will smash the soil block, thereby the large The bulky soil clods are refined to avoid the accumulation of large-volume soil clods. The lifting shaft drives thelifting blade 15 to rotate, so that the soil clods are transported upwards along the liftingcylinder 17, and the soil clods will slide into the hopper along theguide pipe 16 13, thus completing the inner loop.

以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以权利要求的保护范围为准。The above is only a specific implementation of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope of the present disclosure. should fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be determined by the protection scope of the claims.

Claims

1. The utility model provides an engineering dregs screening plant, includes screening case (11) and sets up landing leg (27) at four corner positions of its lower extreme, screening case (11) upper end intermediate position is equipped with the feed inlet, and the feed inlet lower extreme is equipped with feed off pipe (12), its characterized in that, the feed inlet upper end is equipped with hopper (13) that are used for reinforced, screening case (11) inside is equipped with one and can follow screening case (11) inner wall gliding slip ring, slip ring upper end is equipped with filter cone plate (32) that are used for sieving the soil piece, be equipped with the discharge gate on screening case (11) in the slip ring outside, be equipped with in screening case (11) outside that the discharge gate is located and be used for collecting buffer memory case (18) of large granule soil piece, buffer memory case (18) bottom is left low high inclined plane about, be equipped with on buffer memory case (18) and be used for smashing the feed back mechanism that returns to the large-volume soil piece, screening case (11) lower extreme is equipped with and is used for sending qualified soil piece.

2. The engineering residue soil screening device according to claim 1, wherein the feed back mechanism comprises a lifting cylinder (17) arranged at the left upper end of a buffer tank (18), the lower end of the lifting cylinder (17) extends to the inside of the buffer tank (18), a lifting shaft is coaxially arranged in the lifting cylinder (17), the upper end of the lifting shaft is connected with a driving motor (14) for driving the lifting shaft to rotate, the driving motor (14) is arranged at the top of the lifting cylinder (17), lifting blades (15) for pushing soil blocks to rise are arranged on the outer side of the lifting shaft in the lifting cylinder (17), a discharge hole at the upper end of the lifting cylinder (17) is communicated with the inner wall of a charging hopper (13) through a guide pipeline (16), the lower end of the lifting shaft penetrates out of the bottom of the buffer tank (18), and crushing cutter groups (33) are distributed on the surface array of the lifting shaft positioned on the outer side of the lifting cylinder (17).

3. Engineering residue screening device according to claim 2, characterized in that the buffer tank (18) where the crushing knife group (33) is located is provided with a discharge opening, the discharge opening being provided with a movable door.

4. The engineering residue soil screening device according to claim 2, wherein the feeding mechanism comprises a feeding channel (24) arranged inside the screening box (11), the feeding channel (24) is of a semi-cylindrical structure with an opening at the upper end, the right end of the feeding channel (24) extends out of the right side of the screening box (11), a through hole matched with the feeding channel (24) is formed in the right side of the screening box (11), a feeding shaft (26) is coaxially arranged in the feeding channel (24), the left end of the feeding shaft (26) is in transmission connection with the lifting shaft through a transmission piece, and feeding blades (25) for pushing materials are distributed on the surface of the feeding shaft (26) inside the feeding channel (24).

5. The engineering residue soil screening device according to claim 4, wherein a collecting hopper (28) for guiding and collecting qualified soil blocks is arranged above the feeding channel (24), the upper end of the collecting hopper (28) is connected with a sliding block, and the lower port of the collecting hopper (28) corresponds to a receiving area of the feeding channel (24).

6. The engineering residue soil screening device according to claim 4, wherein a buffer is arranged between the screening box (11) and the filter cone plate (32), and the filter cone plate (32) is arranged in a floating mode through the buffer, so that the impact of soil blocks on the filter cone plate (32) is buffered; the buffer piece comprises a plurality of guide rods (29) arranged at the lower end of the sliding block, a sliding sleeve (30) is arranged on the inner wall of the screening box (11), the sliding sleeve (30) and the guide rods (29) are arranged in a sliding mode, and the sliding sleeve (30) and the sliding block are fixedly connected through a buffer spring (31).

7. The engineering residue soil screening device according to claim 6, wherein a shaking piece for driving the filtering cone plate (32) to shake up and down to improve screening effect is further arranged in the screening box (11), the shaking piece comprises a pressing rod (21) arranged at the lower end of the guide rod (29), a pressing wheel (19) is rotatably arranged on the side face of the pressing rod (21), a vibrating disc (23) is arranged on a feeding shaft (26) where the pressing wheel (19) is located, and a plurality of protrusions for generating pushing force to the pressing rod (21) are distributed on the outer side of the vibrating disc (23).

8. The engineering clinker screening device according to claim 6, wherein the transmission member comprises a first transmission wheel (20) arranged at the lower end of the lifting shaft and a second transmission wheel (22) arranged at the left end of the feeding shaft (26), and the first transmission wheel (20) and the second transmission wheel (22) are meshed with each other.

9. A method of using the engineered slag screening assembly of claim 8, comprising the steps of:

step one: pouring the waste soil blocks into a feed hopper (13), enabling the soil blocks to enter the middle position of a filtering cone plate (32) along a blanking pipe (12), then sliding down along the middle position, enabling the qualified soil blocks to pass through the filtering cone plate (32) in the sliding down process, then sending out of a screening box (11) by a feeding mechanism, enabling the unqualified soil blocks to slide down along the filtering cone plate (32), and finally entering a buffer box (18);

step two: the collected soil blocks slide along the bottom of the buffer box (18) and finally enter the position of the feed back mechanism, at this time, the lifting shaft is driven to rotate by the driving motor (14), the crushing cutter group (33) on the outer side of the lifting shaft can crush the soil blocks, so that the large-volume soil blocks are subjected to refinement treatment, accumulation of the large-volume soil blocks is avoided, the lifting shaft drives the lifting blades (15) to rotate, the soil blocks are conveyed upwards along the lifting cylinder (17), and the soil blocks can slide into the feeding hopper (13) along the guide pipeline (16), so that internal circulation is completed.