Straw smashing and returning device for agricultural planting

Abstract

The invention relates to the technical field of agricultural machinery, in particular to an agricultural planting straw smashing and returning device which comprises a bent top plate, a connecting frame fixed to one side of the top end of the bent top plate and a smashing roller rotationally installed in the bent top plate in a penetrating mode. According to the cleaning assembly, the defects that in an existing straw smashing and returning device, straw chippings are attached to gaps of blades and the inner wall of a machine shell to form viscous blocks, and manual disassembling and cleaning are needed are overcome, efficient and automatic cleaning is achieved through an innovative mechanical linkage structure, and by means of intermittent rotation of a smashing roller, a linkage installation frame and a cleaning block synchronously reciprocate; the human-shaped cleaning groove matched with the human-shaped blade is utilized to accurately abut against and erase residual scraps on the surface of the blade, and the problem that a traditional scraper cannot remove stubborn attachments is thoroughly solved. Cleaning operation is automatically completed in the whole process without disassembling the cutter shaft or opening the machine shell, efficiency loss caused by manual disassembling is avoided, and the continuous operation capacity of equipment is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, in particular to a straw crushing and returning device for agricultural planting. Background Art

[0002] As a key component of intelligent agricultural power machinery, existing straw shredders for agricultural planting utilize high-speed rotary cutting and throwing dispersion as their core operating principles. Power is transmitted from the tractor via a drivetrain system consisting of a drive shaft and gearbox to the cutter shaft, driving the blades to perform unsupported cutting of the straw. The blades utilize a herringbone-shaped design to optimize operation. The shredded straw is then evenly distributed through a throwing device such as a fan impeller or throwing wheel, and regulated by a guide plate. Some models can also utilize a rotary tillage mechanism to bury the straw. This device integrates mechanical structure and power control technology within the intelligent agricultural power machinery system through the coordinated operation of various systems, effectively improving straw processing efficiency and operational stability.

[0003] Existing agricultural straw crushing and returning devices also have certain usage defects: the crushed straw debris tends to form stubborn adhesions in the gaps between the blades. Especially in a working environment with high humidity, the debris will absorb water and form sticky clumps with the soil. These clumps not only block the movement space of the blades and increase the resistance of the mechanical operation, but also change the original cutting trajectory of the blades due to continuous accumulation, affecting the crushing accuracy. Because the clumps are tightly bonded to the surface of the components and are limited by the narrow space of the blade gap and the complex structure of the inner wall of the casing, they cannot be effectively removed by the device's own auxiliary cleaning components (such as scrapers) and must be manually disassembled and cleaned. The overall cleaning efficiency is low, which reduces the overall work efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for crushing and returning agricultural straw to the field, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A straw crushing and returning device for agricultural planting, comprising a bent top plate, a connecting frame fixed to one side of the top of the bent top plate, and a crushing roller rotatably installed inside the bent top plate, a collecting roller rotatably installed inside the side of the bent top plate close to the crushing roller, a pressing roller rotatably installed on the side of the bent top plate away from the collecting roller, a plurality of human-shaped blades are installed at equal angles around the outside of the crushing roller, a fixing frame is fixedly installed on the inner wall of the side of the bent top plate close to the crushing roller, and a cleaning assembly is provided on the top side of the fixing frame; the cleaning assembly comprises a turntable, a positioning frame, a mounting frame and a plurality of cleaning blocks, the turntable is rotatably installed on the top side of the fixing frame, the positioning frame is longitudinally fitted on the outside of one side of the turntable, the mounting frame is transversely fixed on the outside of the top side of the positioning frame, a plurality of cleaning blocks are equidistantly arranged on the outside of the side of the mounting frame close to the human-shaped blade, and a spraying assembly is provided on one side of each cleaning block.

[0006] Furthermore, sprockets are fixedly installed on the outside of one end of the collecting roller and one end of the crushing roller, a chain is arranged between the sprockets on the outside of the collecting roller and the sprockets on the outside of the crushing roller, and a control motor is fixedly installed on the outside of one side of the bent top plate, and one end of the control motor is fixed to one end of the crushing roller.

[0007] Furthermore, a driving motor is fixedly installed on one side of the top of the fixing frame, and the output end of the driving motor is fixedly installed at the middle position of the outside of one side of the turntable. An arc-shaped guide groove is opened through the inside of one side of the positioning frame, and interference grooves are opened through the inside of the positioning frame near the ends of both sides of the guide groove.

[0008] Furthermore, a limiting column is rotatably mounted on the outside of one side of the turntable close to the guide groove, and the limiting column and the guide groove are slidably connected through them. A transmission ratchet is fixedly mounted on one end of the crushing roller close to the turntable, and a plurality of teeth are fixedly mounted on the outside of one side of the turntable close to the transmission ratchet, and the plurality of teeth are meshed with one side of the transmission ratchet.

[0009] Furthermore, two limit rods are symmetrically fixedly installed at the edge of one side of the positioning frame away from the transmission ratchet, and the outside of the limit rods is slidably installed with a limit slide, and one end of the limit slide is fixedly installed on the inner wall of one side of the bent top plate.

[0010] Furthermore, a guide rod is slidably installed inside one end of the mounting frame away from the positioning frame, and positioning seats are fixedly installed at both ends of the guide rod, and one end of the positioning seats is fixedly installed on one inner wall of the bent top plate.

[0011] Furthermore, two connecting rods are fixedly installed at the edges of both sides of several cleaning blocks, one end of the two connecting rods is fixedly installed on the outside of one side of the mounting frame, and a herringbone-shaped cleaning groove is provided through the interior of the cleaning block.

[0012] Furthermore, a support frame is fixedly mounted on the inner wall of the top end of the bent top plate close to the plurality of cleaning blocks, and a liquid storage tank is fixedly mounted on the top end of the bent top plate.

[0013] Furthermore, the spray assembly includes a limit block and a suction cylinder, the limit block is slidably arranged in the cleaning groove inside the cleaning block, the suction cylinder is horizontally arranged on the outside of the side of the limit block close to the mounting frame, one end of the suction cylinder is slidably installed on the outside of the side of the mounting frame, the side of the limit block close to the suction cylinder is fixedly installed with a support block, the support block is fixedly installed on the outside of one side of the suction cylinder, the bottom end of the limit block is fixedly installed on the bottom wall of the support frame, the limit block is arranged in a herringbone shape, the thickness of the limit block is the same as the thickness of the cleaning block, and the limit block is fixedly installed with a pull rod on the outside of the side close to the suction cylinder.

[0014] Furthermore, a piston block is fixedly installed at one end of the pull rod located inside the suction cylinder, and a sliding sealing connection is formed between the piston block and the suction cylinder. A one-way liquid inlet valve pipe and a one-way liquid discharge valve pipe are fixed through the outside of the suction cylinder away from the limit block. The input end of the one-way liquid inlet valve pipe is installed through the inside of one side of the bottom end of the liquid storage tank, and a liquid collecting chamber is opened inside the limit block. Several nozzles are fixedly installed through the outside of the limit block away from the suction cylinder at equal intervals, and the output end of the one-way liquid discharge valve pipe is fixedly installed through one side of the liquid collecting chamber.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. As a technical improvement of intelligent agricultural power machinery, this cleaning component aims to solve the defect that straw debris in the existing straw crushing and returning device adheres to the blade gap and the inner wall of the casing to form sticky clumps, and needs to be manually disassembled and cleaned. It realizes efficient automatic cleaning through an innovative mechanical linkage structure. With the help of the intermittent rotation of the crushing roller, the linkage mounting frame and the cleaning block move back and forth synchronously. The human-shaped cleaning groove adapted to the human-shaped blade is used to accurately resist and erase the residual debris on the surface of the human-shaped blade, completely solving the problem that traditional scrapers cannot remove stubborn attachments. There is no need to disassemble the blade shaft or open the casing, and the cleaning operation is completed automatically throughout the process, avoiding efficiency loss caused by manual disassembly, significantly improving the continuous operation capacity of the equipment, and improving overall work efficiency; 2. This device realizes the precise flushing of the cleaning groove inside the recovery cleaning block during the intermittent cleaning stage through the coordinated action of the support frame, limit block, liquid storage tank and spray assembly. The liquid storage tank provides cleaning medium for the spray assembly, and the limit block fits into the cleaning groove to guide the flushing path, and cooperates with the nozzle to evenly spray the cleaning liquid into the cleaning groove, effectively removing impurities that may adhere during cleaning, and avoiding impurity residues that cause wear on the human-shaped blade during subsequent cleaning, ensuring the long-term cleanliness of the inner wall of the cleaning groove, maintaining a stable resistance wiping effect, and ensuring overall continuous and efficient cleaning capabilities. It adapts to the requirements of intelligent agricultural power machinery for equipment durability and operation stability, and further improves the reliability of the automated cleaning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the bent top plate and the pressure roller of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the crushing roller and the human-shaped blade of the present invention; Figure 4 for Figure 3 A in the middle is an enlarged structural diagram; Figure 5 Schematic diagram of the three-dimensional structure of the positioning frame and the limiting column of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the mounting frame and the guide rod of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the connecting rod and the cleaning block of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the cleaning block and the cleaning tank of the present invention; Figure 9 It is a schematic diagram of the three-dimensional structure of the mounting frame and the suction cylinder of the present invention; Figure 10 for Figure 9 The enlarged structural diagram at B in the middle; Figure 11It is a partially cutaway perspective structural diagram of the one-way liquid inlet valve tube and the liquid storage tank of the present invention; Figure 12 It is a partial cross-sectional three-dimensional structural schematic diagram of the limit stopper and the liquid collecting chamber of the present invention.

[0017] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Bending top plate; 2. Connecting frame; 3. Collecting roller; 4. Crushing roller; 5. Sprocket; 6. Chain; 7. Control motor; 8. Pressing roller; 9. Humanoid blade; 10. Fixing frame; 11. Driving motor; 12. Turntable; 13. Positioning frame; 14. Limiting rod; 15. Limiting slide; 16. Guide groove; 17. Interference groove; 18. Limiting column; 19. , teeth; 20. Transmission ratchet; 21. Mounting frame; 22. Guide rod; 23. Positioning seat; 24. Connecting rod; 25. Cleaning block; 26. Cleaning trough; 27. Support frame; 28. Limit block; 29. ​​Support block; 30. Suction cylinder; 31. Pull rod; 32. Piston block; 33. One-way liquid inlet valve pipe; 34. Liquid storage tank; 35. One-way liquid discharge valve pipe; 36. Liquid collecting chamber; 37. Nozzle. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figure 1 - Figure 8 , a straw crushing and returning device for agricultural planting comprises a bent top plate 1, a connecting frame 2 fixed to one side of the top of the bent top plate 1, and a crushing roller 4 rotatably installed inside the bent top plate 1, a collecting roller 3 is rotatably installed inside the side of the bent top plate 1 close to the crushing roller 4, a pressing roller 8 is rotatably installed on the side of the bent top plate 1 away from the collecting roller 3, and a plurality of human-shaped blades 9 are installed around the outside of the crushing roller 4 at equal angles. A fixing frame 10 is fixedly installed on the inner wall of the side of the bent top plate 1 close to the crushing roller 4, and a cleaning component is provided on the top side of the fixing frame 10; the cleaning component comprises a turntable 12, a positioning frame 13, a mounting frame 21 and a plurality of cleaning blocks 25, the turntable 12 is rotatably installed on one side of the fixing frame 10, the positioning frame 13 is longitudinally fitted on the outside of one side of the turntable 12, the mounting frame 21 is horizontally fixedly installed on the outside of the top side of the positioning frame 13, and a plurality of cleaning blocks 25 are equidistantly arranged on the outside of the side of the mounting frame 21 close to the human-shaped blade 9, and a spraying component is provided on one side of each cleaning block 25.

[0020] A sprocket 5 is fixedly installed on the outside of one end of the collecting roller 3 and one end of the crushing roller 4, and a chain 6 is provided between the sprocket 5 on the outside of the collecting roller 3 and the sprocket 5 on the outside of the crushing roller 4. A control motor 7 is fixedly installed on the outside of one side of the bent top plate 1, and one end of the control motor 7 is fixed to one end of the crushing roller 4.

[0021] A driving motor 11 is fixedly installed on one side of the top of the fixing frame 10, and the output end of the driving motor 11 is fixedly installed at the middle position of the outside of one side of the turntable 12. An arc-shaped guide groove 16 is opened through the inside of one side of the positioning frame 13, and interference grooves 17 are opened through the inside of the positioning frame 13 near the two ends of the guide groove 16.

[0022] A limiting post 18 is rotatably mounted on the outside of the turntable 12 near the guide groove 16. The limiting post 18 is slidably connected to the guide groove 16. A transmission ratchet 20 is fixedly mounted on the end of the crushing roller 4 near the turntable 12. A plurality of teeth 19 are fixedly mounted on the outside of the turntable 12 near the transmission ratchet 20. The plurality of teeth 19 are meshed with one side of the transmission ratchet 20.

[0023] Specifically, the transmission ratchet 20 of the existing structure is arranged so that when the control motor 7 drives the crushing roller 4 to rotate, the cleaning component will not be triggered to operate.

[0024] Two limiting rods 14 are symmetrically fixedly installed at the edge of the positioning frame 13 away from the transmission ratchet 20. The outside of the limiting rods 14 is slidably installed with a limiting slide 15, and one end of the limiting slide 15 is fixedly installed on the inner wall of one side of the bent top plate 1.

[0025] Specifically, by slidingly installing the limiting rod 14 and the limiting slide 15 , the positioning frame 13 is made more stable and smooth during the reciprocating motion, thereby ensuring the overall use effect.

[0026] A guide rod 22 is slidably installed inside the end of the mounting frame 21 away from the positioning frame 13 , and positioning seats 23 are fixedly installed at both ends of the guide rod 22 . One end of the positioning seats 23 is fixedly installed on one inner wall of the bent top plate 1 .

[0027] Two connecting rods 24 are fixedly installed at the edges of both sides of the cleaning blocks 25. One end of the two connecting rods 24 is fixedly installed on the outside of one side of the mounting frame 21. A herringbone-shaped cleaning groove 26 is provided inside the cleaning block 25.

[0028] In this embodiment, when the agricultural straw crushing and returning device is in use, the connecting frame 2 is first fixed to the agricultural tractor. Then, by starting the tractor, the bent top plate 1 is driven to move synchronously as a whole. By controlling the start of the motor 7 and the transmission connection of the sprocket 5 and the chain 6, the collecting roller 3 and the crushing roller 4 are driven to start rotating synchronously. The straw is gathered to one side of the crushing roller 4 by the collecting roller 3, and then the collected straw is crushed and returned to the field by the rotating crushing roller 4. Finally, the crushed straw debris can be pressed into the soil by the pressing roller 8. After the device has been running for a period of time in an operating environment with high humidity, it is necessary to clean the human-shaped blade 9 outside the crushing roller 4. At this time, the motor 7 can be controlled to stop so that the crushing roller 4 stops rotating. At this time, the human-shaped blade 9 at the top of the crushing roller 4 is placed longitudinally and parallel to the cleaning block 25 on one side to ensure that the subsequent cleaning block 25 can be stably moved to the outside of the human-shaped blade 9. Then the drive motor 11 is started to run, and the output shaft of the drive motor 11 is rotated to drive the turntable 12 to rotate. When the turntable 12 rotates, it will drive the limiting column 18 to rotate synchronously. The limiting column 18 is connected with the guide groove 16 and the resistance groove 17 through sliding, so that the limiting column 18 will drive the positioning frame 13 to move forward when it rotates. The reciprocating motion of the positioning frame 13 drives the mounting frame 21 at the top to reciprocate synchronously. The mounting frame 21 is limited by the guide rod 22 on one side and the positioning seat 23, so that the mounting frame 21 is more stable during the reciprocating motion. The connecting rod 24 is fixedly connected to the cleaning block 25 and the connecting rod 24 is fixedly connected to the mounting frame 21, so that the mounting frame 21 drives the cleaning block 25 to reciprocate synchronously during the reciprocating motion. When the cleaning block 25 is extended, the human-shaped cleaning groove 26 inside it moves and is sleeved on the outside of the human-shaped blade 9, thereby cleaning the impurities adhered to the outside of the human-shaped blade 9. When the turntable 12 rotates a certain angle to clean a group of human-shaped blades 9 (such as Figure 5As shown), at this time, the teeth 19 on one side of the turntable 12 are engaged with one side of the transmission ratchet 20, and then the turntable 12 continues to rotate, so that the teeth 19 drive the transmission ratchet 20 engaged on one side to rotate a certain angle, thereby driving the crushing roller 4 to rotate a certain angle synchronously, thereby rotating the uncleaned human-shaped blade 9 on one side to the top of the crushing roller 4, ensuring the continuity of subsequent cleaning. When the turntable 12 rotates to drive the teeth 19 and the crushing roller 4 to rotate synchronously, the limiting post 18 will move in a fitting manner inside the arc-shaped guide groove 16, so that the limiting post 18 will not interfere with the operation of the positioning frame 13, ensuring the orderliness of the overall operation and avoiding movement conflict. When the crushing roller 4 drives the uncleaned human-shaped blade 9 on one side to rotate to the top of the crushing roller 4, the limiting post 1 8 leaves the guide groove 16 and enters the top resistance groove 17. Subsequently, during the continuous rotation of the turntable 12, the positioning frame 13 will be driven to perform a second reciprocating motion to clean the second group of human-shaped blades 9, so that the entire device can orderly resist and erase the residual debris on the surface of the human-shaped blades 9 when in use, and completely solve the problem that traditional scrapers cannot remove stubborn attachments. There is no need to disassemble the knife shaft or open the casing, and the cleaning operation is completed automatically throughout the process, avoiding the efficiency loss caused by manual disassembly, significantly improving the continuous operation capacity of the equipment, and improving the overall work efficiency. This device is in line with the automation development needs of intelligent agricultural power machinery. Through the intelligent coordination of mechanical structure and operation rhythm, the cleaning time is greatly reduced, and the stability and efficiency of the straw processing process are greatly optimized.

[0029] Example 2: Please refer to Figure 9 - Figure 12 This embodiment further illustrates Example 1. A support frame 27 is fixedly mounted on the inner wall of the top of the bent top plate 1 near the top of the cleaning blocks 25 . A liquid storage tank 34 is fixedly mounted on the top of the bent top plate 1 .

[0030] The spraying assembly includes a limit block 28 and a suction cylinder 30. The limit block 28 is slidably arranged in the cleaning groove 26 inside the cleaning block 25. The suction cylinder 30 is horizontally arranged on the outside of the side of the limit block 28 close to the mounting frame 21. One end of the suction cylinder 30 is slidably installed on the outside of the side of the mounting frame 21. A support block 29 is fixedly installed on the side of the limit block 28 close to the suction cylinder 30. The support block 29 is fixedly installed on the outside of one side of the suction cylinder 30. The bottom end of the limit block 28 is fixedly installed on the bottom wall of the support frame 27. The limit block 28 is arranged in a herringbone shape. The thickness of the limit block 28 is the same as the thickness of the cleaning block 25. A pull rod 31 is fixedly installed on the outside of the side of the limit block 28 close to the suction cylinder 30.

[0031] Specifically, by setting the thickness of the limit block 28 to be the same as the thickness of the cleaning block 25, when the human-shaped limit block 28 fills the cleaning groove 26 inside the cleaning block 25, the outer surfaces of both sides of the limit block 28 and the cleaning block 25 are on the same plane, ensuring the comprehensiveness of the overall filling.

[0032] A piston block 32 is fixedly installed at one end of the pull rod 31 located inside the suction cylinder 30, and a sliding sealing connection is formed between the piston block 32 and the suction cylinder 30. A one-way liquid inlet valve tube 33 and a one-way liquid discharge valve tube 35 are fixed through the outside of the suction cylinder 30 away from the limit block 28. The input end of the one-way liquid inlet valve tube 33 is installed through the inside of one side of the bottom end of the liquid storage tank 34, and a liquid collecting chamber 36 is opened inside the limit block 28. Several nozzles 37 are fixedly installed at equal intervals through the outside of the limit block 28 away from the suction cylinder 30, and the output end of the one-way liquid discharge valve tube 35 is fixedly installed through one side of the liquid collecting chamber 36.

[0033] When the cleaning block 25 is retracted after cleaning, it drives the pull rod 31 and the piston block 32 to perform an extrusion movement inside the suction cylinder 30, thereby squeezing the cleaning liquid previously drawn into the suction cylinder 30 into the one-way drain valve tube 35, and then the cleaning liquid is discharged through the one-way drain valve tube 35. The liquid valve tube 35 is connected to the liquid collecting chamber 36, so that the cleaning liquid inside the one-way drain valve tube 35 is squeezed into the liquid collecting chamber 36, and then the cleaning liquid is sprayed into the cleaning groove 26 inside the cleaning block 25 through multiple nozzles 37 on the side, thereby achieving precise flushing of the cleaning groove 26, effectively removing impurities that may adhere during cleaning, and avoiding impurity residues that cause wear on the human-shaped blade 9 during subsequent cleaning, ensuring that the inner wall of the cleaning groove 26 is clean for a long time, maintaining a stable friction wiping effect, and ensuring the overall continuous and efficient cleaning capability, adapting to the requirements of intelligent agricultural power machinery for equipment durability and operation stability, and further improving the reliability of the automated cleaning system.

[0034] It should also be noted that, through the setting of the support frame 27 and the human-shaped limit block 28, after the overall cleaning is completed and the cleaning block 25 is reset, the human-shaped limit block 28 can fill the cleaning groove 26 inside the cleaning block 25, thereby preventing the subsequent device from operating and the flying debris adhering to the empty cleaning groove 26, thereby ensuring the subsequent cleaning effect.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A straw crushing and returning device for agricultural planting, comprising a bent top plate (1), a connecting frame (2) fixed to one side of the top of the bent top plate (1), and a crushing roller (4) rotatably installed inside the bent top plate (1), a collecting roller (3) rotatably installed inside the side of the bent top plate (1) close to the crushing roller (4), and characterized in that: A pressure roller (8) is rotatably mounted on the side of the bent top plate (1) away from the collecting roller (3), a plurality of human-shaped blades (9) are mounted around the outside of the crushing roller (4) at equal angles, a fixing frame (10) is fixedly mounted on the inner wall of the side of the bent top plate (1) close to the crushing roller (4), and a cleaning component is provided on one side of the top end of the fixing frame (10); The cleaning assembly comprises a turntable (12), a positioning frame (13), a mounting frame (21) and a plurality of cleaning blocks (25), wherein the turntable (12) is rotatably mounted on one side of the top end of the fixing frame (10), the positioning frame (13) is longitudinally fitted on the outside of one side of the turntable (12), the mounting frame (21) is transversely fixedly mounted on the outside of one side of the top end of the positioning frame (13), and a plurality of cleaning blocks (25) are equidistantly arranged on the outside of one side of the mounting frame (21) close to the humanoid blade (9), and a spraying assembly is provided on one side of each cleaning block (25).

2. The device for crushing and returning agricultural straw to the field according to claim 1, characterized in that: A sprocket (5) is fixedly mounted on the outside of one end of the collecting roller (3) and one end of the crushing roller (4); a chain (6) is provided between the sprocket (5) on the outside of the collecting roller (3) and the sprocket (5) on the outside of the crushing roller (4); a control motor (7) is fixedly mounted on the outside of one side of the bent top plate (1); and one end of the control motor (7) is fixedly mounted on one end of the crushing roller (4).

3. The device for crushing and returning agricultural straw to the field according to claim 1, characterized in that: A driving motor (11) is fixedly mounted on one side of the top end of the fixing frame (10), and an output end of the driving motor (11) is fixedly mounted at a middle position outside one side of the turntable (12). An arc-shaped guide groove (16) is provided through the interior of one side of the positioning frame (13), and a resistance groove (17) is provided through the interior of both ends of the positioning frame (13) near the guide groove (16).

4. The device for crushing and returning agricultural straw to the field according to claim 3, characterized in that: A limiting column (18) is rotatably mounted on the outside of one side of the turntable (12) near the guide groove (16), and the limiting column (18) is in sliding connection with the guide groove (16). A transmission ratchet (20) is fixedly mounted on one end of the crushing roller (4) near the turntable (12), and a plurality of teeth (19) are fixedly mounted on the outside of one side of the turntable (12) near the transmission ratchet (20), and the plurality of teeth (19) are meshedly connected with one side of the transmission ratchet (20).

5. The device for crushing and returning agricultural straw to the field according to claim 4, characterized in that: Two limiting rods (14) are symmetrically fixedly installed on the edge of one side of the positioning frame (13) away from the transmission ratchet (20), and the outside of the limiting rods (14) is slidably installed with a limiting slide (15), and one end of the limiting slide (15) is fixedly installed on the inner wall of one side of the bent top plate (1).

6. The device for crushing and returning agricultural straw to the field according to claim 1, characterized in that: A guide rod (22) is slidably installed inside one end of the mounting frame (21) away from the positioning frame (13), and positioning seats (23) are fixedly installed at both ends of the guide rod (22). One end of the positioning seat (23) is fixedly installed on the inner wall of one side of the bent top plate (1).

7. The device for crushing and returning agricultural straw to the field according to claim 1, characterized in that: Two connecting rods (24) are fixedly mounted on both side edges of a plurality of the cleaning blocks (25), one end of each of the connecting rods (24) is fixedly mounted on the outside of one side of the mounting frame (21), and a herringbone-shaped cleaning groove (26) is provided through the interior of the cleaning block (25).

8. The device for crushing and returning agricultural straw to the field according to claim 7, characterized in that: A support frame (27) is fixedly mounted on the inner wall of the top end of the bent top plate (1) near the plurality of cleaning blocks (25), and a liquid storage tank (34) is fixedly mounted on the top end of the bent top plate (1).

9. The device for crushing and returning agricultural straw to the field according to claim 1, characterized in that: The spraying assembly includes a limit block (28) and a suction cylinder (30), wherein the limit block (28) is slidably arranged in the cleaning groove (26) inside the cleaning block (25), and the suction cylinder (30) is transversely arranged on the outside of the side of the limit block (28) close to the mounting frame (21). One end of the suction cylinder (30) is slidably installed on the outside of the side of the mounting frame (21). A support block (29) is fixedly installed on the side of the limit block (28) close to the suction cylinder (30), and the support block (29) is fixedly installed on the outside of the side of the suction cylinder (30). The bottom end of the limit block (28) is fixedly installed on the bottom wall of the support frame (27). The limit block (28) is arranged in a herringbone shape. The thickness of the limit block (28) is the same as that of the cleaning block (25). A pull rod (31) is fixedly installed on the outside of the side of the limit block (28) close to the suction cylinder (30).

10. The device for crushing and returning agricultural straw to the field according to claim 9, characterized in that: A piston block (32) is fixedly installed at one end of the pull rod (31) located inside the suction cylinder (30), and a sliding sealing connection is formed between the piston block (32) and the suction cylinder (30). A one-way liquid inlet valve pipe (33) and a one-way liquid discharge valve pipe (35) are fixedly installed on the outside of the suction cylinder (30) away from the limit block (28). The input end of the one-way liquid inlet valve pipe (33) is installed inside the bottom side of the liquid storage tank (34). A liquid collecting chamber (36) is opened inside the limit block (28). Several nozzles (37) are fixedly installed at equal intervals on the outside of the limit block (28) away from the suction cylinder (30). The output end of the one-way liquid discharge valve pipe (35) is installed inside one side of the liquid collecting chamber (36).

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