Agricultural straw recycling device

Abstract

The utility model discloses a kind of agricultural straw recycling devices, it is related to agricultural straw recycling processing technical field, including pulverization box, the sliding groove in two sides is slidably connected with adjusting plate, first feeding roller is rotatably connected on the adjusting plate of two sides, the upper surface of pulverization box is fixedly connected with the adjusting bolt of through adjusting frame, two adjusting nuts are threadedly connected on adjusting bolt, the outside of two sides sliding groove is equipped with first cover plate and second cover plate, and the outside of one first cover plate is equipped with positioning assembly. The utility model can realize the purpose of adjusting the feeding gap between first feeding roller and second feeding roller, ensure that first feeding roller and second feeding roller can exert best feeding efficiency, and can make the device effectively seal the sliding groove used for adjustment while realizing feeding gap adjustment, and the corresponding best feeding gap corresponding to corresponding straw can be memorized positioning, improve the convenience of adjustment work.

Description

Technical Field

[0001] This utility model relates to the field of agricultural straw recycling and processing technology, and in particular to an agricultural straw recycling and utilization device. Background Technology

[0002] Straw is a general term for the stems and leaves of mature crops, typically referring to the residue left after harvesting wheat, rice, corn, potatoes, rapeseed, cotton, sugarcane, and other crops. Currently, the recycling and processing of straw mostly involves crushing it, and then using the crushed straw fragments as raw materials for various production industries such as feed, organic fertilizer, fuel, and paper. This transforms a large amount of difficult-to-dispose-of green waste into valuable resources, creating economic value while protecting the environment and improving soil. Straw crushers are commonly used equipment in the straw crushing process. During crushing, the straw enters the machine body through the feed inlet and is conveyed into the crushing chamber by two feed rollers. In this process, it is crushed by high-speed rotating crushing rollers (with crushing blades), and the crushed straw fragments are discharged through the discharge outlet.

[0003] Currently, the feeding gap between the two feeding rollers in traditional straw crushers is mostly fixed. However, different types of straw have different diameters and moisture contents, and the optimal feeding gap required for different diameters and moisture contents is also different. If the optimal gap cannot be matched, it will inevitably have a certain impact on the feeding efficiency and the uniformity of crushing. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the feeding gap between the two feeding rollers is not easy to adjust in the prior art, and to propose an agricultural straw recycling device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An agricultural straw recycling device includes a crushing box. A crushing roller is provided on one side of the crushing box, and a first feeding roller and a second feeding roller are respectively arranged opposite each other on the other side. A chain drive mechanism is provided between the first feeding roller and the crushing roller. Sliding grooves are provided on both sides of the crushing box, and adjusting plates are slidably connected in the sliding grooves on both sides. The first feeding roller is rotatably connected to the adjusting plates on both sides. An adjusting frame is slidably connected to the upper part of the crushing box. The two sides of the adjusting frame are fixed to the adjusting plates on both sides, and an adjusting bolt is fixedly connected to the upper surface of the crushing box, penetrating the adjusting frame. Two adjusting nuts are threaded on the adjusting bolt. Both sides of the slide groove are provided with a first cover plate and a second cover plate for sealing the slide groove. The first cover plate is sleeved on the upper part of the adjusting plate and the outside of the adjusting frame, and the second cover plate is sleeved on the lower part of the adjusting plate. One of the first cover plates has a positioning component on its exterior for positioning the adjustment frame.

[0006] In some embodiments, the adjusting plate includes a sliding plate and a baffle. The sliding plate is T-shaped and slidably connected in a groove. The baffle is connected to the outer surface of the sliding plate, and the upper end of the baffle is slidably inserted into a first cover plate, and the lower end is slidably inserted into a second cover plate.

[0007] In some embodiments, a locking assembly is provided between the baffle and the crushing box. The locking assembly includes a rectangular guide groove formed outside the baffle and a fixing bolt fixedly connected to the outer surface of the crushing box. The fixing bolt passes through the guide groove, and a fastening nut is connected to the external thread of the fixing bolt.

[0008] In some embodiments, there are several positioning components, which are slidably connected to the first cover plate in a circular array.

[0009] In some embodiments, the positioning component includes a cylindrical positioning seat and a guide rail fixedly connected to the first cover plate. The positioning seat has a protrusion slidably connected to the guide rail, and a pin is slidably connected inside the positioning seat. A spring is connected between the pin and the positioning seat. The outer surface of the adjusting frame has several positioning holes that are adapted to the pin, and the outer surface of the first cover plate has several rectangular through slots that are adapted to the pin.

[0010] In some embodiments, the positioning seat is externally threaded with a locking nut, which abuts against the outer surface of the guide rail.

[0011] In some embodiments, the chain drive mechanism includes two first sprockets fixedly connected to the outer ends of the crushing roller and the first feed roller, respectively, and a first chain is externally connected to the two first sprockets.

[0012] In some embodiments, a tensioning assembly for tensioning the first chain is further included. The tensioning assembly includes a sprocket frame slidably connected to the outside of the crushing chamber and a tensioning nut fixedly connected to the outside of the crushing chamber. A tensioning wheel that is rotatably connected to the first chain drive is mounted on the sprocket frame. A tensioning bolt is threaded onto the tensioning nut. An inverted T-shaped connecting shaft is fixedly connected to the lower end of the tensioning bolt. The connecting shaft is rotatably connected to the sprocket frame.

[0013] In some embodiments, the outside of the crushing box is provided with a drive assembly for driving the crushing roller. The drive assembly includes a first drive motor, and pulleys are fixedly connected to the output end of the first drive motor and one end of the crushing roller. A belt is externally connected to the two pulleys.

[0014] In some embodiments, a straw conveying assembly is provided on the side of the crushing box away from the crushing roller. The straw conveying assembly includes a conveyor belt and two conveying rollers. The conveyor belt is driven to the outside of the two conveying rollers. A second drive motor is installed on the outside of the crushing box and driven to one of the conveying rollers. The outer ends of the second feed roller and one of the conveying rollers are fixedly connected to second sprockets. The two second sprockets are driven to the outside of a second chain.

[0015] Compared with the prior art, this utility model provides a recycling device for agricultural straw, which has the following beneficial effects: 1. By using the adjustment frame, adjustment bolts, adjustment nuts and adjustment plates, the feeding gap between the first feeding roller and the second feeding roller can be adjusted. This allows the device to adjust the feeding gap to the optimal value according to the type, diameter and moisture content of the straw, thereby ensuring that the first feeding roller and the second feeding roller can achieve the best feeding efficiency. It can also improve the uniformity of crushing to a certain extent and ensure the quality of the crushing treatment effect. 2. Through the coordinated arrangement of the adjusting plate, the first cover plate, and the second cover plate, the first cover plates on both sides provide a certain guiding effect on the adjusting frame during the adjustment of the feeding gap, thereby preventing the first feeding roller from tilting when sliding, ensuring the smooth adjustment of the first feeding roller, and thus ensuring the parallelism between the first and second feeding rollers, thereby ensuring the normal operation of the feeding work; furthermore, the baffle, the first cover plate, and the second cover plate enable the device to effectively seal the chute used for adjustment while adjusting the feeding gap, preventing dust generated in the crushing box from leaking out through the chute during the crushing operation, avoiding excessive impact on the working environment, and ensuring the normal operation of the crushing work; 3. By setting up the positioning components, the positioning components can memorize the optimal feeding gap corresponding to the corresponding straw, so that the device will automatically locate the same feeding gap value the next time. Therefore, repeated adjustment work is no longer required. This not only makes the adjustment of the feeding gap more intuitive, but also further improves the convenience of the adjustment work. Furthermore, by setting up multiple positioning components, the device can memorize and locate multiple feeding gaps, so that the device can memorize the optimal feeding gap required for various types of straw with different diameters and moisture contents. This makes subsequent adjustment work more convenient, quick, and easy to operate.

[0016] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught by practice of this invention. Attached Figure Description

[0017] Figure 1 This is a frontal three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a rear-view three-dimensional structural diagram of the present invention; Figure 4 for Figure 3 Enlarged structural diagram at point B; Figure 5 This is a partial structural diagram of the present invention viewed from the front and in cross-section. Figure 6 This is a three-dimensional rear view diagram of the internal structure of this utility model; Figure 7 This is a side sectional view of the present invention. Figure 8 for Figure 7 Enlarged structural diagram at point C; Figure 9 This is a side view of the three-dimensional structure of the first feed roller. Figure 10 A three-dimensional diagram of the exploded structure at the first and second cover plates; Figure 11 This is a top-view sectional view of the positioning component. Figure 12 A three-dimensional structural diagram of the positioning component; Figure 13 This is a schematic diagram of a partial sectional view of the tensioning assembly from the side.

[0018] In the diagram: 1. Crushing box; 101. Feeding port; 102. Discharge port; 103. Slide chute; 2. Crushing roller; 201. Central shaft; 202. Blade holder; 203. Crushing blade; 3. First feed roller; 4. Second feed roller; 5. Adjusting plate; 501. Sliding plate; 502. Baffle; 6. Adjusting frame; 7. Adjusting bolt; 701. Adjusting nut; 8. Locking assembly; 801. Guide groove; 802. Fixing bolt; 803. Fastening nut; 9. Positioning assembly; 901. Positioning seat; 902. Pin; 903. Spring; 904. Guide rail; 905. Protrusion; 906. Locking nut; 907. 10. Positioning hole; 10. First cover plate; 1001. Through groove; 11. Second cover plate; 12. Drive assembly; 1201. First drive motor; 1202. Pulley; 1203. Belt; 13. Straw conveying assembly; 1301. Conveying roller; 1302. Conveyor belt; 14. Tensioning assembly; 1401. Sprocket frame; 1402. Tensioning wheel; 1403. Tensioning nut; 1404. Tensioning bolt; 1405. Guide post; 1406. Slider; 1407. Connecting shaft; 15. First sprocket; 16. First chain; 17. Second sprocket; 18. Second chain; 19. Second drive motor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-3 as well as Figure 5 A recycling device for agricultural straw includes a crushing box 1. The lower part of the crushing box 1 is provided with support legs. A crushing roller 2 is rotatably installed on one side of the inside of the crushing box 1, and a first feeding roller 3 and a second feeding roller 4 are respectively provided on the other side, which are arranged vertically opposite to each other. A chain drive mechanism is provided between the first feeding roller 3 and the crushing roller 2. A feeding port 101 is opened on the side of the crushing box 1 near the first feeding roller 3, and a discharge port 102 is opened on the end near the crushing roller 2. The feeding port 101 is used to feed straw into the crushing box 1, and the discharge port 102 is used to discharge the crushed straw fragments to the outside of the crushing box 1.

[0021] Reference Figure 5-10 The crushing box 1 has rectangular sluices 103 on both sides. The rectangular sluices 103 are set along the height direction. Adjusting plates 5 are slidably connected in the sluices 103 on both sides. The first feed roller 3 is rotatably connected to the adjusting plates 5 on both sides. Specifically, the two sides of the first feed roller 3 are rotatably connected to the two adjusting plates 5 through bearings. The outer surface of the adjusting plate 5 is equipped with bearing seats for installing bearings.

[0022] The upper part of the crushing box 1 is slidably connected to an inverted U-shaped adjusting frame 6. The two sides of the adjusting frame 6 are fixed to the adjusting plates 5 on both sides respectively. The upper surface of the crushing box 1 is fixedly connected to an adjusting bolt 7 that passes through the adjusting frame 6. Two adjusting nuts 701 are threaded on the adjusting bolt 7. The two adjusting nuts 701 abut against the upper and lower surfaces of the adjusting frame 6 respectively. The height of the two can be adjusted by turning the two adjusting nuts 701, thereby adjusting the height of the adjusting frame 6.

[0023] Both sides of the slide 103 are provided with a first cover plate 10 and a second cover plate 11 for sealing the slide 103. Specifically, the first cover plate 10 and the second cover plate 11 are respectively installed on the outer surface of the crushing box 1 by screws. The first cover plate 10 is sleeved on the upper part of the adjusting plate 5 and the outside of the adjusting frame 6. At this time, the first cover plate 10 can guide and stabilize the sliding of the adjusting frame 6. The second cover plate 11 is sleeved on the lower part of the adjusting plate 5.

[0024] The adjusting plate 5 includes a sliding plate 501 and a baffle 502. The sliding plate 501 is T-shaped and slidably connected in the slide groove 103. The baffle 502 is detachably connected to the outer surface of the sliding plate 501 by screws. The upper end of the baffle 502 is slidably inserted into the first cover plate 10, and the lower end is slidably inserted into the second cover plate 11.

[0025] Reference Figure 2 A locking assembly 8 is provided between the baffle 502 and the crushing box 1. The locking assembly 8 includes a rectangular guide groove 801 opened on the outside of the baffle 502 and a fixing bolt 802 fixedly connected to the outer surface of the crushing box 1. The fixing bolt 802 passes through the guide groove 801, and a fastening nut 803 is connected to the external thread of the fixing bolt 802. The fastening nut 803 is pressed tightly against the outer surface of the baffle 502.

[0026] Reference Figure 1 and Figure 2 as well as Figure 11 and Figure 12 One of the first cover plates 10 has three positioning components 9 on its exterior for positioning the adjustment frame 6. The three positioning components 9 are arranged in a circular array and are respectively installed on the first cover plate 10.

[0027] The positioning component 9 includes a cylindrical positioning seat 901 and a guide rail 904 fixedly connected to the first cover plate 10. The guide rail 904 has a T-shaped slide rail. The positioning seat 901 has a protrusion 905 that is slidably connected to the T-shaped slide rail. The positioning seat 901 has a pin 902 slidably connected inside. A spring 903 connects the pin 902 and the positioning seat 901. The adjusting frame 6 has three positioning holes 907 that are adapted to the pin 902 on its outside. The three positioning holes 907 are at the same height. The outer surface of the first cover plate 10 has three rectangular through slots 1001 that are adapted to the pin 902. The rectangular through slots 1001 are arranged along the height direction. The three pins 902 are slidably inserted into the corresponding through slots 1001. The through slots 1001 allow the pins 902 to still be inserted into the first cover plate 10 and cooperate with the corresponding positioning holes 907 when adjusted to different heights. The positioning seat 901 is externally threaded with a locking nut 906, which abuts against the outer surface of the guide rail 904.

[0028] Reference Figure 3 The chain drive mechanism includes two first sprockets 15 that are fixedly connected to the outer ends of the crushing roller 2 and the first feeding roller 3 respectively, and the two first sprockets 15 are externally connected to a first chain 16.

[0029] Reference Figure 3 , Figure 4 as well as Figure 13 An agricultural straw recycling device further includes a tensioning assembly 14 for tensioning a first chain 16. The tensioning assembly 14 includes a sprocket frame 1401 slidably connected to the outside of the crushing box 1 and a tensioning nut 1403 fixedly connected to the outside of the crushing box 1. A tensioning wheel 1402, which is drivenly connected to the outer surface of the first chain 16, is rotatably connected to the sprocket frame 1401. A tensioning bolt 1404 is threadedly connected to the tensioning nut 1403. An inverted T-shaped connecting shaft 1407 is fixedly connected to the lower end of the tensioning bolt 1404. The connecting shaft 1407 is rotatably connected to the sprocket frame 1401. A guide post 1405 is fixedly connected to the outer surface of the crushing box 1. A slider 1406 is fixedly installed on the sprocket frame 1401. The slider 1406 is slidably sleeved on the outside of the guide post 1405.

[0030] Reference Figure 1 The outside of the crushing box 1 is provided with a drive assembly 12 for driving the crushing roller 2. The drive assembly 12 includes a first drive motor 1201. The output end of the first drive motor 1201 and one end of the crushing roller 2 are both fixedly connected to pulleys 1202. The two pulleys 1202 are externally connected to a belt 1203.

[0031] A straw conveying assembly 13 is provided on the side of the crushing box 1 away from the crushing roller 2. The straw conveying assembly 13 includes a conveyor belt 1302 and two conveying rollers 1301. The two conveying rollers 1301 are rotatably connected to the crushing box 1. The conveyor belt 1302 is horizontally arranged and driven to the outside of the two conveying rollers 1301. One end of the conveyor belt 1302 extends through the feed inlet 101 to a position inside the crushing box 1 near the second feed roller 4. A second drive motor 19 is installed on the outside of the crushing box 1. The output end of the second drive motor 19 is driven to the conveying roller 1301 near the second feed roller 4. The outer ends of the second feed roller 4 and one of the conveying rollers 1301 are fixedly connected to second sprockets 17. The two second sprockets 17 are driven to the outside of second chains 18. Furthermore, dust covers (dust covers are prior art and are not shown in the attached drawings) can be installed on the outside of the first sprocket 15, the first chain 16, the second sprocket 17, and the second chain 18 to provide some protection for the chains and sprockets.

[0032] Reference Figure 5 and Figure 6 The crushing roller 2 includes a central shaft 201, and a blade holder 202 is fixedly installed on the outside of the central shaft 201. Four long strip-shaped crushing blades 203 are installed on the outside of the blade holder 202. The four crushing blades 203 are arranged in a circular array along the axis of the central shaft 201. Moreover, the crushing blades 203 are detachably installed on the blade holder 202 by screws, so as to facilitate the later maintenance or replacement of the crushing blades 203.

[0033] In this invention, before crushing the straw, the first drive motor 1201 and the second drive motor 19 are started. The first drive motor 1201 then drives the crushing roller 2 to rotate counterclockwise at high speed via the pulley 1202 and belt 1203. The crushing roller 2 then drives the first feeding roller 3 to rotate counterclockwise via the first sprocket 15 and first chain 16. Meanwhile, the second drive motor 19 drives the conveyor roller 1301, which is close to the second feeding roller 4, to rotate clockwise, thereby driving the conveyor belt 1302 to rotate clockwise. The conveyor roller 1301, in turn, drives the second feeding roller 4 to rotate clockwise via the second sprocket 17 and second chain 18. This results in the first feeding roller 3 and the second feeding roller 4 rotating simultaneously and in opposite directions. The rotation directions of each component are as follows: Figure 5 The direction indicated by the middle arrow.

[0034] When crushing straw, a number of straws are placed on the upper surface of the conveyor belt 1302, ensuring that the length direction of the straws is parallel to the conveying direction of the conveyor belt 1302. At the same time, the straws are pushed towards the feeding port 101. Under the conveying of the conveyor belt 1302, the straws are conveyed through the feeding port 101 into the feeding gap between the first feeding roller 3 and the second feeding roller 4. Then, under the rotation of the first feeding roller 3 and the second feeding roller 4, the straws are conveyed towards the crushing roller 2. At this time, under the high-speed rotation of the crushing roller 2, the straws are chopped by the crushing blade 203. The chopped straw fragments are discharged from the discharge port 102 under the drive of the crushing roller 2, thus achieving the purpose of straw crushing.

[0035] When it is necessary to adjust the feeding gap between the first feeding roller 3 and the second feeding roller 4, first loosen the fastening nut 803 on the fixing bolt 802 with a wrench, thereby separating the fastening nut 803 from the baffle 502 and releasing the lock between the adjusting plate 5 and the crushing box 1. Then, by turning the two adjusting nuts 701 on the adjusting bolt 7 respectively, the adjusting frame 6 can be driven to slide up or down. At this time, the adjusting frame 6 can drive the adjusting plate 5 to slide synchronously in the slide groove 103, thereby driving the first feeding roller 3 to slide synchronously up or down in the crushing box 1, thereby adjusting the feeding gap between the first feeding roller 3 and the second feeding roller 4. After the adjustment is completed, tighten the fastening nut 803 to fix the adjusting plate 5 and the crushing box 1 again, ensuring the stability of the first feeding roller 3.

[0036] During the upward or downward sliding of the adjusting frame 6, the first cover plates 10 on both sides provide a certain guiding effect, thereby preventing the first feeding roller 3 from tilting during sliding and ensuring the smooth sliding of the first feeding roller 3. This, in turn, ensures the parallelism between the first feeding roller 3 and the second feeding roller 4, thus ensuring the normal operation of the feeding process. Furthermore, during the upward or downward sliding of the adjusting plate 5, the upper end of the baffle 502 is always inside the first cover plate 10, and the lower end is always inside the second cover plate 11, thereby ensuring the sealing of the chute 103 and preventing the dust generated by the crushing box 1 from leaking out through the chute 103 during the crushing process, thus ensuring the normal operation of the crushing process.

[0037] After adjusting the feeding gap between the first feed roller 3 and the second feed roller 4 to a suitable position, the height of one of the positioning seats 901 can be adjusted by sliding it up or down until the pin 902 inside the positioning seat 901 aligns with the corresponding positioning hole 907. Under the rebound force of the spring 903, the pin 902 can be pushed into the positioning hole 907. Then, tighten the locking nut 906 on the positioning seat 901 to press the locking nut 906 tightly against the outer surface of the guide rail 904, thereby fixing the positioning seat 901. At this point, the feeding gap can be memorized and positioned. In subsequent use, when the feeding gap needs to be adjusted again, first pull the pin 902 outward to remove it from the positioning hole 907. During this process, the pin 902 and the positioning seat 901 will compress the spring 903, and then the feeding gap can be adjusted. When the feeding gap needs to be restored to its previous height, as the adjusting frame 6 slides, the previous positioning hole 907 aligns with the previous pin 902 again. Under the rebound force of the spring 903, the pin 902 can be pushed back into the positioning hole 907. At this point, it can be confirmed that the feeding gap has been restored to its previous state, thus eliminating the need for repeated debugging and measurement. This not only makes the adjustment of the feeding gap more intuitive and efficient but also further improves the convenience of the adjustment work. Furthermore, by setting multiple positioning components 9, the height of the positioning seat 901 and the pin 902 can be adjusted according to requirements. Therefore, each positioning component 9 can position the adjusting frame 6 at different heights, allowing the device to memorize and position multiple feeding gaps. This enables the device to help users remember the required feeding gaps for straws with different diameters and moisture contents, making subsequent adjustments more convenient, quick, and easy to operate.

[0038] Furthermore, the tensioning assembly 14 can maintain a certain tension on the originally slack first chain 16, ensuring normal transmission. When adjusting the first feed roller 3 to slide up or down, the first chain 16 will become tight or loose. In this case, the tensioning bolt 1404 on the tensioning nut 1403 can be turned to move the sprocket frame 1401 and the tensioning wheel 1402 upward and away from the first chain 16 or downward to further compress the first chain 16. This allows the first chain 16 to be in a certain tension state by adjusting the height of the tensioning wheel 1402. Moreover, the guide post 1405 and the slider 1406 not only ensure the stability of the sprocket frame 1401, but also provide guidance when adjusting the height of the tensioning wheel 1402, ensuring the smoothness of the adjustment work.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. An agricultural straw recycling device, comprising a crushing box (1), wherein a crushing roller (2) is provided on one side of the interior of the crushing box (1), and a first feeding roller (3) and a second feeding roller (4) are respectively provided on the other side, the first feeding roller (3) and the crushing roller (2) being arranged in opposite directions, and a chain drive mechanism is provided between the first feeding roller (3) and the crushing roller (2), characterized in that: The crushing box (1) has sliding grooves (103) on both sides, and adjusting plates (5) are slidably connected in the sliding grooves (103) on both sides. The first feeding roller (3) is rotatably connected to the adjusting plates (5) on both sides. The upper part of the crushing box (1) is slidably connected to an adjusting frame (6). The two sides of the adjusting frame (6) are fixed to the adjusting plates (5) on both sides respectively. The upper surface of the crushing box (1) is fixedly connected to an adjusting bolt (7) that passes through the adjusting frame (6). Two adjusting nuts (701) are threaded on the adjusting bolt (7). Both sides of the slide groove (103) are provided with a first cover plate (10) and a second cover plate (11) for sealing the slide groove (103). The first cover plate (10) is sleeved on the upper part of the adjusting plate (5) and the outside of the adjusting frame (6), and the second cover plate (11) is sleeved on the lower part of the adjusting plate (5). One of the first cover plates (10) has a positioning component (9) on its exterior for positioning the adjustment frame (6).

2. The agricultural straw recycling device according to claim 1, characterized in that: The adjusting plate (5) includes a sliding plate (501) and a baffle (502). The sliding plate (501) is T-shaped and slidably connected in the slide groove (103). The baffle (502) is connected to the outer surface of the sliding plate (501), and the upper end of the baffle (502) is slidably inserted into the first cover plate (10), and the lower end is slidably inserted into the second cover plate (11).

3. The agricultural straw recycling device according to claim 2, characterized in that: A locking assembly (8) is provided between the baffle (502) and the crushing box (1). The locking assembly (8) includes a rectangular guide groove (801) opened outside the baffle (502) and a fixing bolt (802) fixedly connected to the outer surface of the crushing box (1). The fixing bolt (802) passes through the guide groove (801), and a fastening nut (803) is connected to the external thread of the fixing bolt (802).

4. The agricultural straw recycling device according to claim 1, characterized in that: The positioning components (9) are a plurality of each other, and the plurality of positioning components (9) are slidably connected to the first cover plate (10) in a ring array.

5. The agricultural straw recycling device according to claim 4, characterized in that: The positioning component (9) includes a cylindrical positioning seat (901) and a guide rail (904) fixedly connected to the first cover plate (10). The positioning seat (901) is provided with a protrusion (905) slidably connected to the guide rail (904), and a pin (902) is slidably connected inside the positioning seat (901). A spring (903) is connected between the pin (902) and the positioning seat (901). The adjustment frame (6) has several positioning holes (907) that are adapted to the pin (902) on its outside. The outer surface of the first cover plate (10) has several rectangular through slots (1001) that are adapted to the pin (902).

6. The agricultural straw recycling device according to claim 5, characterized in that: The positioning seat (901) is externally threaded with a locking nut (906), which abuts against the outer surface of the guide rail (904).

7. The agricultural straw recycling device according to claim 1, characterized in that: The chain drive mechanism includes two first sprockets (15) fixedly connected to the outer ends of the crushing roller (2) and the first feeding roller (3), respectively, and the two first sprockets (15) are externally connected to a first chain (16).

8. The agricultural straw recycling device according to claim 7, characterized in that: It also includes a tensioning assembly (14) for tensioning the first chain (16), the tensioning assembly (14) including a sprocket frame (1401) slidably connected to the outside of the crushing box (1) and a tensioning nut (1403) fixedly connected to the outside of the crushing box (1), a tensioning wheel (1402) rotatably connected to the sprocket frame (1401) and drivenly connected to the first chain (16), a tensioning bolt (1404) threadedly connected to the tensioning nut (1403), and an inverted T-shaped connecting shaft (1407) fixedly connected to the lower end of the tensioning bolt (1404), the connecting shaft (1407) rotatably connected to the sprocket frame (1401).

9. The agricultural straw recycling device according to claim 1, characterized in that: The outside of the crushing box (1) is provided with a drive assembly (12) for driving the crushing roller (2). The drive assembly (12) includes a first drive motor (1201). The output end of the first drive motor (1201) and one end of the crushing roller (2) are both fixedly connected to pulleys (1202). The two pulleys (1202) are externally connected to a belt (1203).

10. The agricultural straw recycling device according to claim 1, characterized in that: The crushing box (1) is provided with a straw conveying assembly (13) on the side away from the crushing roller (2). The straw conveying assembly (13) includes a conveyor belt (1302) and two conveying rollers (1301). The conveyor belt (1302) is driven to the outside of the two conveying rollers (1301). A second drive motor (19) is installed on the outside of the crushing box (1) and is driven to one of the conveying rollers (1301). The second feed roller (4) and the outer ends of one of the conveying rollers (1301) are both fixedly connected to a second sprocket (17). The two second sprockets (17) are driven to the outside of a second chain (18).

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