Multi-stage filtering and feeding device and method for cotton straw mulching film processing

Abstract

The invention relates to the technical field of agricultural waste resource utilization, and discloses a multistage filtering and feeding device and method for cotton straw mulching film processing.The multistage filtering and feeding device comprises a smashing bin, a discharging pipe is fixedly connected to the outer side of the smashing bin, a cleaning mechanism is arranged on the inner wall of the smashing bin, and a funnel is arranged at the bottom of the discharging pipe; the bottom of the funnel is fixedly connected with a separation bin, a separation mechanism is arranged in the separation bin, and the outer side of the separation bin is fixedly connected with a connecting pipe. A stirring rod is driven by a driving motor to rotate, when smashed straw enters a screening barrel in a separation bin through a funnel, the stirring rod conducts screening, and large sundries enter a falling pipe through a roller and finally fall into a collecting box; and the screened straw enters the filtering bin through the connecting pipe to be filtered, impurity separation is rapidly conducted on the smashed straw, and the labor cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural waste resource utilization, specifically a multi-stage filtering and feeding device and method for processing cotton straw mulch. BACKGROUND

[0002] Currently, with the increasing attention to the recycling and reuse of agricultural waste, the processing of cotton straw has become an important part of agricultural resource recycling. In the processing of cotton straw mulch, in order to improve product quality and reduce impurities, the use of multi-stage filtering and feeding devices has become a key technology to improve production efficiency. The device can effectively pretreat, filter and separate cotton straw, providing purer raw materials for subsequent processing.

[0003] In view of the above-mentioned related content, the existing multi-stage filtering and feeding device for processing cotton straw mulch usually pretreats the cotton straw by crushing the warehouse, and then conveys it to the separation warehouse through the hopper after being broken. In the separation warehouse, a mechanical stirring device is used for separation, separating the larger impurities and finer particles in the straw. After this process, the material enters the filtering warehouse, and is screened by the filtering mechanism to ensure the purity and quality of the mulch material. Although this series of process links can effectively process cotton straw, due to the limitations of device design, the processing efficiency and stability still have room for improvement.

[0004] However, the existing multi-stage filtering and feeding device for processing cotton straw mulch still has some technical deficiencies, which are manifested in the following aspects: first, the existing crushing warehouse will cause uneven material due to incomplete crushing during use, affecting the subsequent processing efficiency. Second, although the cleaning mechanism can effectively clean part of the blockage, the overall efficiency is low, especially when crushing hard straw, which can easily cause the equipment to jam, affecting the continuity of production. In addition, the existing separation mechanism in the processing process due to the structure design problem of stirring rod and screening barrel, the material separation is not thorough, part of the impurities can not be effectively removed, finally affecting the filtering effect. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a multi-stage filtering and feeding device and method for processing cotton straw mulch, which solves the problem of not easy to clean the roller when crushing straw.

[0006] In order to achieve the above object, the application is implemented by the following technical scheme: a multi-stage filtering and feeding device and method for processing cotton straw mulch, comprising a crushing bin, a discharge pipe is fixedly connected to the outside of the crushing bin, a cleaning mechanism is arranged on the inner wall of the crushing bin, a hopper is arranged at the bottom of the discharge pipe, a separation bin is fixedly connected to the bottom of the hopper, a separation mechanism is arranged in the separation bin, a connecting pipe is fixedly connected to the outside of the separation bin, a filtering bin is fixedly connected to one side of the connecting pipe, and a filtering mechanism is arranged in the filtering bin;

[0007] The cleaning mechanism comprises a motor, a rotating shaft is fixedly connected to the outside of the motor, a belt pulley one is rotatably connected to the outside of the rotating shaft, the belt pulley one is connected to a belt pulley two through a belt, the belt pulley two is fixedly connected to a circular rod inside, the circular rod is rotatably connected to a belt pulley three outside, the belt pulley three is connected to a belt pulley four through a belt, the belt pulley four is fixedly connected to a crushing rod inside, the crushing rod is provided with a roller outside, an eccentric wheel is fixedly connected to one side of the crushing rod, a fixed rod is fixedly connected to the outside of the eccentric wheel, a connecting rod is rotatably connected to the outside of the fixed rod, a push rod is fixedly connected to the outside of the connecting rod, a piston is slidably connected to the outside of the push rod, an air pipe is fixedly connected to the outside of the piston, an elongated block is fixedly connected to the outside of the piston, a fixed plate is fixedly connected to the outside of the air pipe, and a gas outlet is fixedly connected to the inside of the fixed plate.

[0008] Preferably, the separation mechanism comprises a driving motor, and a stirring rod is rotatably connected to the outside of the driving motor.

[0009] Preferably, the filtering mechanism comprises a filter plate, a contraction rod is arranged in the filter plate, a cylinder is fixedly connected to the top of the contraction rod, a spring is sleeved on the outside of the contraction rod, a fixed block is fixedly connected to the bottom of the contraction rod, a supporting rod is fixedly connected to the bottom of the filter plate, a cylindrical rod is arranged in the supporting rod, a sliding seat is arranged on the outside of the cylindrical rod, a rotating plate is fixedly connected to the bottom of the sliding seat, and a rotating rod is rotatably connected to the inside of the rotating plate.

[0010] Preferably, the bottom of the separation bin is fixedly connected with a falling pipe, the bottom of the falling pipe is provided with a collection box, and the collection box is used to collect the larger impurities in the crushed straw.

[0011] Preferably, an inclined plate is fixedly connected to the inner wall of the crushing bin, and the inclined plate is used to accelerate the movement of the crushed straw.

[0012] Preferably, one end of the spring is fixedly connected to the outside of the filter plate, and the other end of the spring is fixedly connected to the outside of the fixed block.

[0013] Preferably, the long block is fixedly connected to the inner wall of the crushing bin, and the long block is used to fix the piston to work.

[0014] Preferably, the bottom plate of the crushing bin is fixedly connected with a feeding port, and the outer side of the crushing bin is fixedly connected with a support frame.

[0015] Preferably, the outer side of the filtering bin is fixedly connected with a discharge port for discharging the straw.

[0016] A multi-stage filtering and feeding device and method for processing cotton straw mulch, comprising the following steps:

[0017] The initial cotton straw raw material is put into the inside of the crushing bin through the feeding port. After the device is started, the motor in the cleaning mechanism starts to work. The motor drives the crushing rod to rotate at high speed through the transmission of the belt pulley set, and the straw entering the roller is subjected to strong impact and grinding, and is crushed into smaller crushed materials.

[0018] The straw crushed materials carrying impurities enter the separation bin through the discharge pipe and the hopper, and fall into the core component of the separation mechanism, i.e., the screening bucket. The driving motor is started to drive the stirring rod to rotate in the screening bucket. The stirring rod continuously turns and throws the materials, and the separated impurities fall from the lower opening of the screening bucket, pass through the falling pipe, and are finally collected by the collection box, so that the initial impurity separation is realized.

[0019] The straw powder subjected to preliminary screening is conveyed into the filtering bin through the connecting pipe, and the materials are subjected to more fine secondary filtering in the filtering bin through the filtering mechanism, so as to intercept the smaller impurities that may leak in the previous link. After the final fine filtering, the straw powder that is completely pure and fine and meets the processing requirements is finally discharged through the discharge port outside the filtering bin, and is supplied to the subsequent mulch production line.

[0020] The application provides a multi-stage filtering and feeding device and method for processing cotton straw mulch.

[0021] 1、the motor is started to drive the belt pulley one outside the rotating shaft to rotate, the belt pulley one drives the belt pulley two to rotate through the belt in the rotating process, the belt pulley two drives the belt pulley three to rotate in the rotating process, and the belt pulley three drives the crushing rod inside the belt pulley four to rotate in the rotating process, so that the straw in the roller is crushed, the eccentric wheel on one side is driven to rotate by the crushing rod in the crushing process, the connecting rod is driven to reciprocate by the fixed rod in the rotating process of the eccentric wheel, the push rod is driven to inflate the piston inside by the connecting rod in the reciprocating process, and the gas is discharged from the air outlet pipe through the air pipe, so that the roller is cleaned, the manual intervention is reduced, and the working efficiency is greatly improved.

[0022] 2、The present application drives the stirring rod to rotate by the driving motor, when the crushed straw enters the screening barrel in the inside of the separation bin through the funnel, the stirring rod will screen, the larger impurities will enter the falling pipe through the roller and finally fall into the collection box, the screened straw enters the filtering bin through the connecting pipe to filter, quickly separates the impurities from the crushed straw, reduces the labor cost.

[0023] 3、When the straw falls into the inside of the filtering bin, the contraction rod in the inside of the filter plate is driven to contract, the contraction rod drives the spring to compress when contracting, so that the filter plate moves up and down, the filter plate drives the rotating plate to adjust up and down through the supporting rod in the moving process, makes the filtered straw slide to the discharge port to discharge, quickly filters the crushed straw. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the perspective view of the present application;

[0025] Figure 2 It is the schematic view of the collection box of the present application;

[0026] Figure 3 It is the cross section schematic view of the crushing bin of the present application;

[0027] Figure 4 It is the schematic view of the cleaning structure of the present application;

[0028] Figure 5 It is the schematic view of the roller of the present application;

[0029] Figure 6 It is the schematic view of the separation bin of the present application;

[0030] Figure 7 It is the schematic view of the separation mechanism of the present application;

[0031] Figure 8 It is the cross section schematic view of the filtering bin of the present application;

[0032] Figure 9 It is the schematic view of the filtering mechanism of the present application.

[0033] Wherein, 1, the crushing bin; 2, support frame; 3, feed inlet; 4, discharge pipe; 5, hopper; 6, separation bin; 7, falling pipe; 8, collection box; 9, connecting pipe; 10, filter bin; 11, discharge port; 12, separation mechanism; 1201, drive motor; 1202, screening bucket; 1203, stirring rod; 13, cleaning mechanism; 1301, motor; 1302, pulley one; 1303, pulley two; 1304, round rod; 1305, roller; 1306, eccentric wheel; 1307, fixed rod; 1308, connecting rod; 1309, push rod; 1310, piston; 1311, air pipe; 1312, fixed plate; 1313, crushing rod; 1314, pulley three; 1315, pulley four; 1316, rotating shaft; 1317, elongated block; 1318, air outlet; 14, inclined plate; 15, filtering mechanism; 1501, filter plate; 1502, contraction rod; 1503, cylinder; 1504, spring; 1505, fixed block; 1506, rotating rod; 1507, support rod; 1508, cylindrical rod; 1509, sliding seat; 1510, rotating plate. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the specification of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0035] Please refer to the drawings attached Figure 1 The drawings attached Figure 5 The embodiment of the present application provides a multi-stage filtering and feeding device and method for processing cotton straw mulch, which comprises a crushing bin 1. The outer side of the crushing bin 1 is fixedly connected with a discharge pipe 4. The inner wall of the crushing bin 1 is provided with a cleaning mechanism 13. The bottom of the discharge pipe 4 is provided with a hopper 5. The bottom of the hopper 5 is fixedly connected with a separation bin 6. The inside of the separation bin 6 is provided with a separation mechanism 12. The outer side of the separation bin 6 is fixedly connected with a connecting pipe 9. One side of the connecting pipe 9 is fixedly connected with a filter bin 10. The inside of the filter bin 10 is provided with a filtering mechanism 15.

[0036] The cleaning mechanism 13 comprises a motor 1301, the outer side of the motor 1301 is fixedly connected with a rotating shaft 1316, the outer side of the rotating shaft 1316 is rotatably connected with a belt pulley one 1302, the belt pulley one 1302 is connected with a belt pulley two 1303 through a belt, the inner side of the belt pulley two 1303 is fixedly connected with a round rod 1304, the outer side of the round rod 1304 is rotatably connected with a belt pulley three 1314, the belt pulley three 1314 is connected with a belt pulley four 1315 through a belt, the inner side of the belt pulley four 1315 is fixedly connected with a crushing rod 1313, the outer side of the crushing rod 1313 is provided with a roller 1305, one side of the crushing rod 1313 is fixedly connected with an eccentric wheel 1306, the outer side of the eccentric wheel 1306 is fixedly connected with a fixed rod 1307, the outer side of the fixed rod 1307 is rotatably connected with a connecting rod 1308, the outer side of the connecting rod 1308 is fixedly connected with a push rod 1309, the outer side of the push rod 1309 is slidably connected with a piston 1310, the outer side of the piston 1310 is fixedly connected with an air pipe 1311, the outer side of the piston 1310 is fixedly connected with an elongated block 1317, the outer side of the air pipe 1311 is fixedly connected with a fixed plate 1312, and the inner side of the fixed plate 1312 is fixedly connected with an air outlet 1318.

[0037] The separating mechanism 12 comprises a driving motor 1201, the outer side of the driving motor 1201 is rotatably connected with a stirring rod 1203, the outer side of the stirring rod 1203 is provided with a screening barrel 1202, the bottom of the separating bin 6 is fixedly connected with a falling pipe 7, the bottom of the falling pipe 7 is provided with a collection box 8, the collection box 8 is used for collecting larger impurities in the crushed straw, and the inner wall of the crushing bin 1 is fixedly connected with an inclined plate 14, the inclined plate 14 is used for accelerating the movement of the crushed straw.

[0038] Specifically, the straw enters the roller 1305 inside the crushing bin 1 through the feed inlet 3. At this time, the motor 1301 drives the belt pulley one 1302 outside the rotating shaft 1316 to rotate. The belt pulley one 1302 drives the belt pulley two 1303 to rotate through the belt during rotation. The belt pulley two 1303 drives the belt pulley three 1314 to rotate during rotation. The belt pulley three 1314 drives the crushing rod 1313 inside the belt pulley four 1315 to rotate during rotation, thereby crushing the straw inside the roller 1305. The eccentric wheel 1306 on one side is driven to rotate by the crushing rod 1313 during crushing. The eccentric wheel 1306 drives the connecting rod 1308 to make reciprocating motion through the fixed rod 1307 during rotation. The connecting rod 1308 drives the push rod 1309 to inflate the piston 1310 during reciprocating motion. The gas is discharged from the gas outlet 1318 through the air pipe 1311, thereby cleaning the residues on the inner wall of the roller 1305, reducing manual intervention, and greatly improving work efficiency. The crushed straw quickly enters the discharge pipe 4 through the inclined plate 14, and then enters the screening barrel 1202 inside the separation bin 6 through the hopper 5. At this time, the drive motor 1201 is started to drive the stirring rod 1203 to rotate. The stirring rod 1203 will be screened. Larger impurities will enter the falling pipe 7 through the screening barrel 1202 and finally fall into the collection box 8. The screened straw enters the filtering bin 10 through the connecting pipe 9 for filtering, quickly separating the impurities from the crushed straw, and reducing the labor cost.

[0039] The filtering mechanism 15 includes a filter plate 1501, the inside of the filter plate 1501 is provided with a contraction rod 1502, the top of the contraction rod 1502 is fixedly connected with a cylinder 1503, the outside of the contraction rod 1502 is sleeved with a spring 1504, the bottom of the contraction rod 1502 is fixedly connected with a fixed block 1505, the bottom of the filter plate 1501 is fixedly connected with a supporting rod 1507, the inside of the supporting rod 1507 is provided with a cylindrical rod 1508, the outside of the cylindrical rod 1508 is provided with a sliding seat 1509, the bottom of the sliding seat 1509 is fixedly connected with a rotating plate 1510, the inside of the rotating plate 1510 is rotatably connected with a rotating rod 1506, one end of the spring 1504 is fixedly connected to the outside of the filter plate 1501, the other end of the spring 1504 is fixedly connected to the outside of the fixed block 1505, an elongated block 1317 is fixedly connected to the inner wall of the crushing bin 1, the elongated block 1317 is used to fix the piston 1310 to work, the bottom plate of the crushing bin 1 is fixedly connected with the feed inlet 3, the outside of the crushing bin 1 is fixedly connected with the support frame 2, the outside of the filtering bin 10 is fixedly connected with the discharge outlet 11, and the discharge outlet 11 is used for discharging the straw.

[0040] Specifically, when the preliminarily filtered straw falls into the filtering bin 10 through the connecting pipe 9, the contraction rod 1502 inside the filtering plate 1501 is driven to contract by the falling straw, and the spring 1504 is compressed when the contraction rod 1502 contracts, so that the filtering plate 1501 moves slightly up and down, and the rotating plate 1510 is driven to adjust up and down by the support rod 1507 during the movement of the filtering plate 1501, and the rotating plate 1510 rotates by the cylindrical rod 1508 inside the sliding seat 1509 during the adjustment, and the contraction rod 1502 drives the filtering plate 1501 to reset by the elastic force of the spring 1504 after the movement of the filtering plate 1501 is completed, and the filtered straw is quickly slid into the discharge port 11 by the rotating plate 1510 to be discharged, and the crushed straw is quickly filtered.

[0041] Please refer to the accompanying Figure 1 - the accompanying Figure 9 The ear acupoint projection positioning device uses the method provided by the embodiment of the application, and the method comprises the following steps:

[0042] The initial cotton straw raw material is put into the inside of the crushing bin 1 through the feeding port 3. After the device is started, the motor 1301 in the cleaning mechanism 13 starts to work. The motor drives the crushing rod 1313 to rotate at high speed through the transmission of the belt pulley set, i.e., the belt pulley one 1302, the belt pulley two 1303, the belt pulley three 1314 and the belt pulley four 1315, and the straw entering the roller 1305 is strongly hit and ground, so that the straw is crushed into smaller fragments.

[0043] The straw fragments carrying impurities enter the separation bin 6 through the discharge pipe 4 and the hopper 5, and fall into the core component, i.e., the screening bucket 1202, of the separation mechanism 12 inside, the driving motor 1201 is started, and the stirring rod 1203 is driven to rotate in the screening bucket 1202. The stirring rod 1203 continuously turns and throws the material, the separated impurities fall from the lower opening of the screening bucket 1202, pass through the falling pipe 7, and are finally collected by the collection box 8, so that the initial impurity separation is realized.

[0044] The straw powder screened preliminarily is transported into the filtering bin 10 through the connecting pipe 9, the material is subjected to more fine secondary filtration by the filtering mechanism 15 in the filtering bin 10, and the smaller impurities that may have leaked in the previous link are intercepted, and after the final fine filtration, the straw powder that is completely in line with the processing requirements, pure and fine, is finally discharged through the discharge port 11 outside the filtering bin 10, and is supplied to the subsequent mulch production line.

[0045] When the device is used, the straw enters the roller 1305 inside the crushing bin 1 through the feeding port 3. At this time, the motor 1301 drives the belt pulley one 1302 outside the rotating shaft 1316 to rotate. The belt pulley one 1302 drives the belt pulley two 1303 to rotate through the belt during the rotation. The belt pulley two 1303 drives the belt pulley three 1314 to rotate during the rotation. The belt pulley three 1314 drives the crushing rod 1313 inside the belt pulley four 1315 to rotate during the rotation, thereby crushing the straw inside the roller 1305. The eccentric wheel 1306 on one side is driven to rotate by the crushing rod 1313 during the crushing. The eccentric wheel 1306 drives the connecting rod 1308 to make reciprocating motion through the fixed rod 1307 during the rotation. The connecting rod 1308 drives the push rod 1309 to inflate the piston 1310 during the reciprocating motion. The gas is discharged from the gas outlet 1318 through the air pipe 1311, thereby cleaning the residues on the inner wall of the roller 1305. The crushed straw quickly enters the discharge pipe 4 through the inclined plate 14, and then enters the screening barrel 1202 inside the separation bin 6 through the hopper 5. At this time, the driving motor 1201 drives the stirring rod 1203 to rotate. The stirring rod 1203 screens the straw. The larger impurities enter the falling pipe 7 through the screening barrel 1202 and finally fall into the collection box 8. The screened straw enters the filtering bin 10 through the connecting pipe 9 for filtering. When the straw falls into the filtering bin 10 through the connecting pipe 9, the contraction rod 1502 inside the filter plate 1501 is driven to contract during the falling of the straw. The contraction rod 1502 drives the spring 1504 to compress during the contraction, thereby making the filter plate 1501 move slightly up and down. The filter plate 1501 drives the rotating plate 1510 to adjust up and down through the support rod 1507 during the movement. During the adjustment, the rotating plate 1510 rotates through the cylindrical rod 1508 inside the sliding seat 1509. After the movement of the filter plate 1501 is completed, the contraction rod 1502 drives the filter plate 1501 to reset through the restoring force of the spring 1504. The filtered straw quickly slides into the discharge port 11 through the rotating plate 1510 for discharge.

Claims

1. A multi-stage filtering and feeding device for processing cotton stalk mulch, comprising a crushing bin (1), characterized in that: The outer side of the crushing bin (1) is fixedly connected with a discharge pipe (4), a cleaning mechanism (13) is arranged on the inner wall of the crushing bin (1), the bottom of the discharge pipe (4) is provided with a hopper (5), the bottom of the hopper (5) is fixedly connected with a separation bin (6), the inside of the separation bin (6) is provided with a separation mechanism (12), the outer side of the separation bin (6) is fixedly connected with a connecting pipe (9), one side of the connecting pipe (9) is fixedly connected with a filter bin (10), and the inside of the filter bin (10) is provided with a filtering mechanism (15). The cleaning mechanism (13) comprises a motor (1301), the outer side of the motor (1301) is fixedly connected with a rotating shaft (1316), the outer side of the rotating shaft (1316) is rotatably connected with a belt pulley I (1302), the belt pulley I (1302) is connected with a belt pulley II (1303) through a belt, the inside of the belt pulley II (1303) is fixedly connected with a round rod (1304), the outer side of the round rod (1304) is rotatably connected with a belt pulley III (1314), the belt pulley III (1314) is connected with a belt pulley IV (1315) through a belt, the inside of the belt pulley IV (1315) is fixedly connected with a crushing rod (1313), the outer side of the crushing rod (1313) is provided with a roller (1305), one side of the crushing rod (1313) is fixedly connected with an eccentric wheel (1306), the outer side of the eccentric wheel (1306) is fixedly connected with a fixed rod (1307), the outer side of the fixed rod (1307) is rotatably connected with a connecting rod (1308), the outer side of the connecting rod (1308) is fixedly connected with a push rod (1309), the outer side of the push rod (1309) is slidably connected with a piston (1310), the outer side of the piston (1310) is fixedly connected with an air pipe (1311), the outer side of the piston (1310) is fixedly connected with an elongated block (1317), the outer side of the air pipe (1311) is fixedly connected with a fixed plate (1312), and the inside of the fixed plate (1312) is fixedly connected with an air outlet (1318).

2. The multi-stage filtering and feeding device for processing cotton stalk mulch according to claim 1, characterized in that, The separation mechanism (12) comprises a driving motor (1201), the outer side of the driving motor (1201) is rotatably connected with a stirring rod (1203), and the outer side of the stirring rod (1203) is provided with a screening barrel (1202).

3. The multi-stage filtering and feeding device for processing cotton stalk mulch according to claim 1, characterized in that, The filtering mechanism (15) comprises a filter plate (1501), the inside of the filter plate (1501) is provided with a shrink rod (1502), the top of the shrink rod (1502) is fixedly connected with a cylinder (1503), the outside of the shrink rod (1502) is sleeved with a spring (1504), the bottom of the shrink rod (1502) is fixedly connected with a fixed block (1505), the bottom of the filter plate (1501) is fixedly connected with a supporting rod (1507), the inside of the supporting rod (1507) is provided with a cylindrical rod (1508), the outside of the cylindrical rod (1508) is provided with a sliding seat (1509), the bottom of the sliding seat (1509) is fixedly connected with a rotating plate (1510), and the inside of the rotating plate (1510) is rotatably connected with a rotating rod (1506).

4. The multi-stage filtering and feeding device for processing cotton stalk mulch according to claim 1, characterized in that, The bottom of the separating bin (6) is fixedly connected with a falling pipe (7), and the bottom of the falling pipe (7) is provided with a collecting box (8) for collecting the larger impurities in the crushed straw.

5. The multi-stage filtering and feeding device for processing cotton stalk mulch according to claim 1, characterized in that, The inner wall of the crushing bin (1) is fixedly connected with an inclined plate (14) for accelerating the movement of the crushed straw.

6. The multi-stage filtering and feeding device for processing cotton stalk mulch according to claim 3, characterized in that, One end of the spring (1504) is fixedly connected to the outside of the filter plate (1501), and the other end of the spring (1504) is fixedly connected to the outside of the fixed block (1505).

7. The multi-stage filtering and feeding device for processing cotton stalk mulch according to claim 1, characterized in that, The elongated block (1317) is fixedly connected to the inner wall of the crushing bin (1), and the elongated block (1317) is used for fixing the piston (1310) to work.

8. The multi-stage filtering and feeding device for processing cotton stalk mulch according to claim 7, characterized in that, The bottom plate of the crushing bin (1) is fixedly connected with a feeding port (3), and the outer side of the crushing bin (1) is fixedly connected with a support frame (2).

9. The multi-stage filtering and feeding device for processing cotton stalk mulch according to claim 7, characterized in that, The outer side of the filtering bin (10) is fixedly connected with a discharge port (11) for discharging the straw.

10. A method for processing cotton stalk mulch using a multi-stage filtering and feeding device according to any one of claims 1-9, characterized in that, The method comprises the following steps: The initial cotton straw raw material is put into the inside of the crushing bin (1) through the feeding port (3). After the device is started, the motor (1301) in the cleaning mechanism (13) starts to work. The motor drives the crushing rod (1313) to rotate at high speed through the transmission of the belt wheel set (1302, 1303, 1314, 1315), and the straw entering the roller (1305) is subjected to strong impact and grinding, so that it is crushed into smaller fragments. The straw fragments carrying impurities enter the separating bin (6) through the discharge pipe (4) and the hopper (5), and fall into the core component screening barrel (1202) of the separating mechanism (12) in the inside. The driving motor (1201) is started to drive the stirring rod (1203) to rotate in the screening barrel (1202). The stirring rod (1203) continuously stirs and throws the material, the separated impurities fall from the lower opening of the screening barrel (1202), pass through the falling pipe (7), and are finally collected by the collecting box (8), so that the initial impurity separation is realized. The straw powder after the primary screening is transported into the filtering bin (10) through the connecting pipe (9), and the material is subjected to the secondary fine filtering through the filtering mechanism (15) in the filtering bin (10), so as to intercept the smaller impurities that may leak in the previous link. After the final fine filtering, the pure and fine straw powder that completely meets the processing requirements is finally discharged through the discharge port (11) outside the filtering bin (10) and is used for the subsequent mulching film production line.

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