A light and heavy impurity separation system and method

Abstract

This invention discloses a light and heavy impurity separation system and method, relating to the field of air separation equipment. It solves the problems of existing light and heavy impurity separation systems and methods, such as the difficulty in uniformly conveying raw materials into the equipment and the inability to directly separate and output light and heavy impurities during the separation process. The system includes a separation box, an input mechanism, and a separation mechanism. The input mechanism includes a feed box, a rotating rod, a rotating plate, a shaking plate, a first spring, and a toggle element. This invention uses the input mechanism to uniformly convey the raw materials to be separated into the separation box. During the conveying process, the toggle element drives the shaking plate to vibrate, initially separating light and heavy impurities. This allows the heavy impurities to be conveyed to the separation box more quickly for subsequent separation operations. The separation mechanism separates and outputs the light and heavy impurities and the required raw materials separately. This device has strong overall integrity and a high degree of automation, effectively improving the efficiency of light and heavy impurity separation and conveying.

Description

Technical Field

[0001] This invention relates to the field of air separation equipment technology, specifically to a light and heavy impurity separation system and method. Background Technology

[0002] With the advancement of the national dual-carbon goals, processes and production lines for producing engineered wood products using non-timber materials such as reeds and crop straw are springing up like mushrooms after rain. The alternative industry of using non-timber resources to replace natural forest timber in the production of engineered wood products is becoming a trend.

[0003] Non-wood materials have two major characteristics that pose a challenge to the production of engineered wood products. First, these materials often contain heavy impurities such as mud, sand, and pebbles brought into the soil during harvesting. Second, non-crop straw often contains a large amount of light impurities such as flowers and leaves. Heavy impurities can damage engineered wood production equipment and cutting tools in the cutting process of engineered wood furniture production, while light impurities can seriously affect the performance of the boards and production costs. Therefore, both types of impurities must be removed.

[0004] Existing separation devices can generally only separate light or heavy components. When separating multiple impurities of different weights, they are prone to mixing. The raw materials are directly piled up and transported into the equipment, resulting in relatively low separation efficiency. Therefore, this invention proposes a light and heavy impurity separation system and method. Summary of the Invention

[0005] The purpose of this invention is to provide a light and heavy impurity separation system and method that facilitates the improvement of light and heavy impurity transport and separation efficiency, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a light and heavy impurity separation system, comprising a separation box, an input mechanism, and a separation mechanism. A support frame is fixedly connected to the lower part of the separation box. The input mechanism includes a feed box fixedly installed on the upper side of the separation box. A rotating rod is rotatably connected inside the feed box. Multiple sets of rotating plates are uniformly fixedly connected to the outer wall of the rotating rod. Multiple sets of shaking plates are rotatably connected to the outer wall of the rotating rod. A first spring is fixedly connected to the side of the shaking plate and fixedly connected to the rotating plate. A toggle element for controlling the shaking state of the shaking plate is provided inside the feed box. The input mechanism can uniformly transport the raw material to be separated into the separation box. During the transportation process, the shaking plate is driven to shake by the toggle element, thus initially separating the light and heavy impurities. This allows the heavy component impurities to be transported to the separation box more quickly for subsequent separation operations. The separation mechanism is installed inside the separation box and is used to separate and output the light and heavy component impurities and the required raw material separately, thereby improving the efficiency of light and heavy impurity transportation and separation.

[0007] Preferably, the separation mechanism includes a fan installed on the side of the separation box, the output end of the fan is connected to an air outlet pipe, the air outlet pipe is connected to a blower pipe, the bottom of the separation box is fixedly connected to an impurity tank and an output tank, the side of the separation box is fixedly connected to a blower box, one end of the blower pipe is connected to the blower box, and the air outlet pipe is connected to an external exhaust port to facilitate control of the air intake and exhaust volume in the separation box. The impurity tank is located on the side closer to the blower box, and the output tank is located on the side farther away from the blower box. The separation box is equipped with a separation component to improve separation efficiency, which facilitates the separate output of light and heavy impurities and the required raw materials.

[0008] Preferably, the separating component includes a guide frame fixedly installed on the upper side of the separating box, the inner walls of the guide frame on both sides are inclined, the bottom of the feed box is provided with a conveying groove, the bottom end of the conveying groove faces the inclined surface of the guide frame, the side of the output groove is provided with a makeup air box connected to the separating box, and one end of the air outlet pipe is connected to the makeup air box to facilitate improving the separation efficiency.

[0009] Preferably, the actuating component includes multiple sets of actuating blocks installed in the feed box. One end of each actuating block is conical. Multiple sets of sliding grooves are provided in the feed box. The actuating block is slidably connected to the inner wall of the sliding groove. A second spring is fixedly connected to the actuating block and fixedly connected to the sliding groove to facilitate control of the shaking state of the shaking plate. The rotating plate rotates counterclockwise around the rotating rod. The multiple sets of actuating blocks are located on the left and lower sides of the rotating rod, respectively, and only the raw material to be input is shaken. The shaking plate on the other side does not need to be shaken. The lower actuating block can fully output the internal raw material downwards during the shaking of the shaking plate.

[0010] Preferably, the separator further includes a collection frame fixedly installed above the guide frame, a plurality of baffles fixedly connected inside the collection frame, an output pipe connected above the collection frame, a cyclone separator connected to one end of the output pipe, a return pipe connected to the output end of the cyclone separator, and a return pipe connected to one end of the return pipe connected to the air inlet of the fan. The cyclone separator is equipped with a rotary valve to facilitate the separation and output of light component impurities output upward.

[0011] Preferably, the input mechanism further includes a conveyor box fixedly installed on the upper side of the feed box. The upper side of the feed box has a communicating groove that communicates with the bottom of the conveyor box. A feeding screw is rotatably connected inside the conveyor box. One end of the rotating rod is coaxially fixedly connected to a first gear, and one end of the feeding screw is coaxially fixedly connected to a second gear that meshes with the first gear. The pitch circle radius of the second gear is smaller than that of the first gear, so that the feeding screw can rotate quickly and evenly convey the raw material to the shaking plate during the slow rotation of the rotating plate, which facilitates the conveying of the raw material to be separated into the feed box.

[0012] Preferably, the separation mechanism further includes a discharge screw rotatably connected to the inner wall of the impurity tank, a discharge screw rotatably connected to the output tank, a drive shaft rotatably connected to the separation box, and multiple sets of separation nets uniformly fixedly connected to the outer wall of the drive shaft. The side of the output tank is provided with a drive component for driving the discharge screw and the drive shaft to rotate, which facilitates the separation and output of impurities and the required raw materials.

[0013] Preferably, the driving component includes a drive motor fixedly mounted on the side of the output slot. The output end of the drive motor is coaxially and fixedly connected to one end of the discharge screw. The discharge screw is connected to a first transmission belt via a pulley drive and is connected to a pulley on the drive shaft. The discharge screw is connected to a second transmission belt via a pulley drive and is connected to a pulley on the discharge screw. The discharge screw is connected to a third transmission belt via a pulley drive and is connected to a pulley on the first gear, which facilitates the rotation of the discharge screw and the drive shaft.

[0014] Preferably, a distribution plate is rotatably connected to the upper edge of the impurity tank to facilitate adjustment of the tilt angle, so that the sand and raw materials on both sides of the set position can be blocked and separated.

[0015] A separation method for a light and heavy impurity separation system includes the following steps: S1. The raw materials are fed into the feed box through the input mechanism. The rotating rod drives the rotating plate and the shaking plate to rotate at a constant speed, so that the raw materials are evenly separated between adjacent rotating plates, ensuring the uniformity of raw material input. S2. During the rotation of the shaking plate, the shaking plate is moved by the actuating component, so that the shaking plate shakes relative to the rotating plate, thereby helping to shake the raw material above the shaking plate evenly, and also helping to shake the impurities of the heavy components to a lower position, thus improving the efficiency of subsequent separation. S3. Input the raw material in the feed box into the separation box. The separation mechanism generates a flow around the separation box, so that impurities of different weights are output to the set positions for output.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention provides a light and heavy impurity separation system and method, which solves the problems of unevenly conveying raw materials into the equipment and difficulty in directly separating and outputting light and heavy impurities during the separation process in existing light and heavy impurity separation systems and methods. The input mechanism evenly conveys the raw materials to be separated into the separation box, and the shaking plate is driven by the actuating component to shake during the conveying process, so as to initially separate the light and heavy impurities, so that the heavy component impurities can be conveyed into the separation box more quickly for subsequent separation operations. The separation mechanism separates and outputs the light and heavy component impurities and the required raw materials respectively. The device has strong overall integrity and high degree of automation, effectively improving the efficiency of light and heavy impurity separation and conveying. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Enlarged view of region A in the middle; Figure 3 for Figure 1 Enlarged view of region B in the middle; Figure 4 This is a partial structural diagram of the input mechanism of the present invention; Figure 5 This is a partial structural diagram of the separation mechanism of the present invention; Figure 6 for Figure 5 Enlarged view of region C; Figure 7 This is a partial structural diagram of the separator of the present invention; Figure 8 for Figure 7 Enlarged view of region D in the middle; Figure 9 This is a partial structural diagram of the actuating element of the present invention; Figure 10 for Figure 9 Enlarged view of region E in the middle.

[0018] In the diagram: 1-Separation box; 2-Support frame; 3-Feed box; 4-Rotating rod; 5-Rotating plate; 6-Shaking plate; 7-First spring; 8-Actuating component; 9-Fan; 10-Outlet pipe; 11-Blower pipe; 12-Impurity tank; 13-Output tank; 14-Blower box; 15-Separation component; 16-Guide frame; 17-Conveying trough; 18-Make-up air box; 19-Actuating block; 20-Sliding trough; 21-Second spring; 22-Collection frame; 23-Baffle plate ; 24-Output pipe; 25-Cyclone separator; 26-Return pipe; 27-Rotating valve; 28-Conveying box; 29-Connecting trough; 30-Feeding screw; 31-First gear; 32-Second gear; 33-Discharge screw; 34-Output screw; 35-Drive shaft; 36-Separation net; 37-Drive component; 38-Drive motor; 39-First transmission belt; 40-Second transmission belt; 41-Third transmission belt; 42-External exhaust port; 43-Distribution plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-10 This invention provides a technical solution: a light and heavy impurity separation system, including a separation box 1, an input mechanism, and a separation mechanism. A support frame 2 is fixedly connected to the lower part of the separation box 1. The input mechanism includes a feed box 3 fixedly installed on the upper side of the separation box 1. A rotating rod 4 is rotatably connected inside the feed box 3. Multiple sets of rotating plates 5 are uniformly fixedly connected to the outer wall of the rotating rod 4. Multiple sets of vibrating plates 6 are rotatably connected to the outer wall of the rotating rod 4. A first spring 7 is fixedly connected to the side of the vibrating plate 6 and fixedly connected to the rotating plate 5. The feed box 3 is provided with a toggle element 8 for controlling the vibration state of the vibrating plate 6. The toggle element 8 includes multiple sets installed inside the feed box 3. The actuating block 19 has a conical end. Multiple sets of sliding grooves 20 are provided in the feed box 3. The actuating block 19 is slidably connected to the inner wall of the sliding groove 20. A second spring 21 is fixedly connected to the actuating block 19 and fixedly connected to the sliding groove 20. The input mechanism can evenly transport the raw material to be separated into the separation box 1. During the transportation process, the actuating element 8 drives the shaking plate 6 to shake, so as to initially separate the light and heavy impurities, so that the heavy component impurities can be transported into the separation box 1 more quickly for subsequent separation operations. The separation mechanism is installed in the separation box 1 to separate and output the light and heavy component impurities and the required raw materials respectively.

[0021] The separation mechanism includes a fan 9 installed on the side of the separation box 1. The output end of the fan 9 is connected to an air outlet pipe 10. An air blower pipe 11 is connected to the air outlet pipe 10. An exhaust port 42 is connected to the air outlet pipe 10. An impurity tank 12 and an output tank 13 are fixedly connected to the bottom of the separation box 1. A distribution plate 43 is rotatably connected to the upper edge of the impurity tank 12. A blower box 14 is fixedly connected to the side of the separation box 1. One end of the blower pipe 11 is connected to the blower box 14. The impurity tank 12 is located on the side closer to the blower box 14, and the output tank 13 is located on the side away from the blower box 14. The separation box 1 is equipped with a separation component 15 for improving separation efficiency.

[0022] The separating component 15 includes a guide frame 16 fixedly installed on the upper side of the separating box 1. The inner walls on both sides of the guide frame 16 are inclined. A conveying trough 17 is opened at the bottom of the feed box 3. The bottom end of the conveying trough 17 faces the inclined surface of the guide frame 16. A makeup air box 18 connected to the separating box 1 is provided on the side of the output trough 13. One end of the air outlet pipe 10 is connected to the makeup air box 18.

[0023] The separator 15 also includes a collection frame 22 fixedly installed above the guide frame 16. Multiple sets of baffles 23 are fixedly connected inside the collection frame 22. An output pipe 24 is connected to the top of the collection frame 22. One end of the output pipe 24 is connected to a cyclone separator 25. The output end of the cyclone separator 25 is connected to a return pipe 26. One end of the return pipe 26 is connected to the air inlet of the fan 9. A rotary valve 27 is provided on the cyclone separator 25.

[0024] The input mechanism also includes a conveyor box 28 fixedly installed on the upper side of the feed box 3. The upper side of the feed box 3 is provided with a connecting groove 29 that communicates with the bottom of the conveyor box 28. A feeding screw 30 is rotatably connected inside the conveyor box 28. One end of the rotating rod 4 is coaxially fixedly connected to a first gear 31. One end of the feeding screw 30 is coaxially fixedly connected to a second gear 32 that meshes with the first gear 31. The pitch circle radius of the second gear 32 is smaller than that of the first gear 31.

[0025] The separation mechanism also includes a discharge spiral 33 rotatably connected to the inner wall of the impurity tank 12, a discharge spiral 34 rotatably connected to the output tank 13, a drive shaft 35 rotatably connected to the separation box 1, and multiple sets of separation nets 36 uniformly fixed to the outer wall of the drive shaft 35. The side of the output tank 13 is provided with a drive component 37 for driving the discharge spiral 34 and the drive shaft 35 to rotate.

[0026] The driving component 37 includes a drive motor 38 fixedly installed on the side of the output slot 13. The drive motor 38 is preferably a YYHS-40. The output end of the drive motor 38 is coaxially fixedly connected to one end of the discharge screw 34. The discharge screw 34 is connected to a first transmission belt 39 via a pulley drive and is connected to a pulley on the drive shaft 35 via a pulley drive. The discharge screw 34 is connected to a second transmission belt 40 via a pulley drive and is connected to a pulley on the discharge screw 33 via a pulley drive. The discharge screw 33 is connected to a third transmission belt 41 via a pulley drive and is connected to a pulley on the first gear 31 via a pulley drive.

[0027] Please see Figures 1-10 This invention provides a separation method for a light and heavy impurity separation system, comprising the following steps: S1. The raw material is fed into the feed box 3 through the input mechanism. The rotating rod 4 drives the rotating plate 5 and the shaking plate 6 to rotate at a constant speed, so that the raw material is evenly separated between adjacent rotating plates 5, ensuring the uniformity of raw material input. S2. During the rotation of the shaking plate 6, the shaking plate 6 is moved by the actuating element 8, so that the shaking plate 6 shakes relative to the rotating plate 5, thereby helping to shake the raw material above the shaking plate 6 evenly, and also helping to shake the impurities of the heavy components to a lower position, thereby improving the efficiency of subsequent separation. S3. Input the raw material in the feed box 3 into the separation box 1. The separation mechanism generates a flow around the separation box 1, so that impurities of different weights are output to the set positions for output.

[0028] Working principle: Start the drive motor 38, which drives the discharge screw 34 to rotate. The drive motor 38 drives the drive shaft 35 to rotate via the first transmission belt 39, and drives the discharge screw 33 to rotate via the second transmission belt 40. The discharge screw 33 drives the first gear 31 to rotate via the third transmission belt 41. The first gear 31 drives the rotating rod 4 to rotate. At the same time, the first gear 31 drives the second gear 32 to rotate rapidly. The second gear 32 drives the feed screw 30 to rotate, thus realizing the input of raw materials.

[0029] The raw materials to be separated are continuously fed into the conveyor box 28. The feed screw 30 transports the raw materials into the conveyor box 28, and they fall downwards into the feed box 3 through the connecting groove 29. During the rotation of the rotating rod 4, the rotating plate 5 rotates at a constant speed. The raw materials fall through the connecting groove 29 into the position between adjacent rotating plates 5. Because the rotation speed of the rotating plate 5 is stable, the amount of raw materials falling into the feed box 3 each time is relatively stable. Furthermore, the raw materials fed by the feed screw 3 are continuously transported to the vibrating plate 6 and distributed relatively evenly, rather than directly accumulating from a fixed position and falling into the separation box 1. The raw materials on the vibrating plate 6 rotate together with the rotating plate 5. During rotation, the side of the vibrating plate 6 abuts against the tip of the actuating block 19, causing the first spring 7 to be stretched. As the pushing force of the vibrating plate 6 on the tip of the actuating block 19 continuously increases, it pushes the actuating block 19 into the... Inside the sliding groove 20, the actuating block 19 is in contact with the shaking plate 6, and the first spring 7 is pulled back to its original position, causing the shaking plate 6 to shake at a certain amplitude, thereby shaking the raw material above evenly and dispersing it relatively evenly to avoid accumulation. After multiple sets of actuating blocks 19, the raw material on the shaking plate 6 will also show a certain degree of stratification, causing the heavier sand and gravel to be shaken to the lower area. During the rotation of the rotating plate 5, the raw material is conveyed downward to the conveying groove 17. The sand and gravel will fall first onto the inclined surface of the guide frame 16 and slide downward under the guidance. After the shaking plate 6 passes the actuating block 19, the second spring 21 pushes the actuating block 19 to spring back to its original position. After that, the actuating block 19 can continue to actuate the next set of shaking plates 6. This structure can reduce the situation where heavy component impurities are wrapped by light raw materials and cannot be separated during the falling process.

[0030] It is worth noting that the shaking plate 6 has three functions: first, it evenly distributes and conveys the raw materials into the separation box 1; second, it ensures that the raw materials in the feed box 3 are fully fed into the separation box 1 through shaking, preventing the raw materials from continuously adhering to the shaking plate 6 during the rotation and conveying process; and third, it performs pre-layer screening of impurities on the shaking plate 6, so that light and heavy components are separated in advance, thereby improving the efficiency of subsequent separation.

[0031] The blower 9 is started to blow air into the outlet pipe 10. The air is delivered to the blower box 14 through the blower pipe 11 and to the make-up air box 18 through the outlet pipe 10. At this time, the raw material sliding downward from the inclined position of the upper guide frame 16 will be pushed further away by the horizontal air blown out by the blower box 14, while heavy impurities are difficult to push and fall into the impurity tank 12 which is closer. By adjusting the tilt angle of the distribution plate 43, the sand and raw material on both sides of the set position can be blocked and separated, while light component impurities will be separated horizontally. During the blowing process, the light component impurities are pushed upward by the downward thrust of the lower air supply box 18 and the suction force of the upper output pipe 24. After being blocked by the baffle plate 23, some of the required raw materials pushed upward are blocked, while the smaller light impurities are transported upward to the collection frame 22 and the output pipe 24 through the gap of the baffle plate 23. After being separated by the cyclone separator 25, the impurities can be discharged through the rotary valve 27, while the filtered airflow is transported in reverse through the return pipe 26 to the suction end of the blower 9 for circulation.

[0032] It is worth noting that, in order to ensure that the airflow drawn through the output pipe 24 is always greater than the airflow input through the blower box 14 and the make-up air box 18, an external exhaust port 42 is provided at the position of the outlet pipe 10 to slightly reduce the air pressure in the outlet pipe 10. This prevents the air pressure input into the separation box 1 from being too high, which could cause the gas to be blown out from the impurity tank 12 and the output tank 13. By setting the drive shaft 35 and the separation net 36, the raw material falling above the output tank 13 is rotated and transported clockwise to the output tank 13 below. During the rotation and transport process, the make-up air box 18 always blows a slight airflow upwards, making it difficult for the light impurities inside to fall downwards into the output tank 13. At the same time, the numerous holes in the separation net 36 can reduce the obstruction of the airflow, allowing the gas discharged from the make-up air box 18 to be continuously transported upwards. The rotation of the separation net 36 slows down the time it takes for the raw material to fall into the output tank 13, further improving the separation efficiency.

[0033] Heavy impurities in impurity tank 12 will be discharged from one end of impurity tank 12 under the push of discharge screw 33, while the required raw materials in output tank 13 will be discharged from one end of output tank 13 by discharge screw 34. Light impurities will be discharged through rotary valve 27 on cyclone separator 25, thus achieving the purpose of simultaneous screening and separation of light and heavy impurities of different components.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A light-heavy impurity separation system, characterized by, include: The separation box has a support frame fixedly connected to its lower part; Also includes: The input mechanism includes a feed box fixedly installed on the upper side of the separation box. A rotating rod is rotatably connected inside the feed box. Multiple sets of rotating plates are evenly fixedly connected to the outer wall of the rotating rod. Multiple sets of shaking plates are rotatably connected to the outer wall of the rotating rod. A first spring is fixedly connected to the side of the shaking plate and to the rotating plate. A toggle element is provided inside the feed box to control the shaking state of the shaking plate. The input mechanism can evenly transport the raw material to be separated into the separation box. During the transportation process, the toggle element drives the shaking plate to shake, so as to initially separate light and heavy impurities, so that the heavy impurities can be transported into the separation box for subsequent separation operations more quickly. A separation mechanism, installed inside a separation chamber, is used to separate and output light and heavy components, impurities, and the required raw materials. The separation mechanism includes a fan mounted on the side of the separation chamber, with an outlet pipe connected to the fan's output end. A blower pipe is connected to the outlet pipe, and an external exhaust port is connected to the outlet pipe. An impurity trough and an output trough are fixedly connected to the bottom of the separation chamber. A blower box is fixedly connected to the side of the separation chamber, with one end of the blower pipe connected to the blower box. The impurity trough is located closer to the blower box, and the output trough is located further away from the blower box. The separation chamber is equipped with a mechanism for lifting the components... The separation component for improving separation efficiency includes a guide frame fixedly installed on the upper side of the separation box. The inner walls of both sides of the guide frame are inclined. A conveying trough is opened at the bottom of the feed box, with the bottom end of the conveying trough facing the inclined surface of the guide frame. A makeup air box connected to the separation box is provided on the side of the output trough. One end of the air outlet pipe is connected to the makeup air box. The actuating component includes multiple sets of actuating blocks installed in the feed box. One end of the actuating block is conical. Multiple sets of sliding grooves are opened in the feed box. The actuating block is slidably connected to the inner wall of the sliding groove. A second spring is fixedly connected to the actuating block and fixedly connected to the sliding groove.

2. The system for separating light and heavy impurities according to claim 1, wherein: The separator also includes a collection frame fixedly installed above the guide frame. Multiple baffles are fixedly connected inside the collection frame. An output pipe is connected to the top of the collection frame. One end of the output pipe is connected to a cyclone separator. The output end of the cyclone separator is connected to a return pipe. One end of the return pipe is connected to the air inlet of the fan. A rotary valve is provided on the cyclone separator.

3. The system for separating light and heavy impurities according to claim 1, wherein: The input mechanism also includes a conveyor box fixedly installed on the upper side of the feed box. The upper side of the feed box has a connecting groove that communicates with the bottom of the conveyor box. A feeding screw is rotatably connected inside the conveyor box. One end of the rotating rod is coaxially fixedly connected to a first gear, and one end of the feeding screw is coaxially fixedly connected to a second gear that meshes with the first gear. The pitch circle radius of the second gear is smaller than that of the first gear.

4. The system for separating light and heavy impurities according to claim 3, wherein: The separation mechanism also includes a discharge screw rotatably connected to the inner wall of the impurity tank, a discharge screw rotatably connected to the output tank, a drive shaft rotatably connected to the separation box, multiple sets of separation nets uniformly fixed to the outer wall of the drive shaft, and a drive component for driving the discharge screw and drive shaft to rotate on the side of the output tank.

5. The system for separating light and heavy impurities according to claim 4, wherein: The driving component includes a drive motor fixedly mounted on the side of the output slot. The output end of the drive motor is coaxially and fixedly connected to one end of the discharge screw. The discharge screw is connected to a first transmission belt that is connected to a pulley on the drive shaft via a pulley drive. The discharge screw is connected to a second transmission belt that is connected to a pulley on the discharge screw via a pulley drive. The discharge screw is connected to a third transmission belt that is connected to a pulley on the first gear via a pulley drive.

6. The system for separating light and heavy impurities according to claim 1, wherein: A distribution plate is rotatably connected to the upper edge of the impurity tank.

7. A separation method of a light-heavy impurity separation system according to any one of claims 1 to 6, characterized in that, Includes the following steps: S1. The raw materials are fed into the feed box through the input mechanism. The rotating rod drives the rotating plate and the shaking plate to rotate at a constant speed, so that the raw materials are evenly separated between adjacent rotating plates, ensuring the uniformity of raw material input. S2. During the rotation of the shaking plate, the shaking plate is moved by the actuating component, so that the shaking plate shakes relative to the rotating plate, thereby helping to shake the raw material above the shaking plate evenly, and also helping to shake the impurities of the heavy components to a lower position, thus improving the efficiency of subsequent separation. S3. Input the raw material in the feed box into the separation box. The separation mechanism generates a flow around the separation box, so that impurities of different weights are output to the set positions for output.

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