Straw smashing device for straw pellet fuel production

Abstract

The utility model relates to the technical field of straw particles, in particular to a straw smashing device for straw particle fuel production. Comprising a crushing box and further comprises a transparent closing door hinged to the surface of the front end of the crushing box. According to the straw smashing device, straw can be effectively smashed for the first time through the arranged first smashing assembly, long straw can be effectively cut through the arranged cutting assembly, and therefore the smashing efficiency and effect of the long straw are improved; according to the straw smashing device, straw can be effectively subjected to secondary smashing treatment, so that the smashing effect of the straw can be effectively improved, the smashed straw can be effectively screened through the arranged screening assembly, dust and other impurities generated during straw smashing treatment can be effectively adsorbed and filtered through the arranged filtering assembly, and therefore the straw smashing effect can be effectively improved. And therefore, dust and other impurities are prevented from polluting the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of straw pellets, and specifically, to a straw crushing device for straw pellet fuel production. Background Art

[0002] Straw, anciently called "gao", also known as "straw", refers to the remaining stem and leaf parts after the mature threshing of gramineous crops such as rice, wheat, and corn. Among them, the straw of rice is often called "rice straw", and the straw of wheat is called "wheat straw". When crushing straw, a straw crushing device for straw pellet fuel production is required.

[0003] When the crushing device in the prior art crushes straw, it cannot effectively cut the longer straw, which will cause the longer straw to directly enter the inside of the crushing device, resulting in incomplete crushing of the straw, etc., and further affecting the crushing effect of the straw. Moreover, during the straw crushing process, a large amount of dust and other impurities will be generated, and the crushing device in the prior art does not have a structure for adsorbing and filtering dust and other impurities, which will cause the dust and other impurities to be directly discharged into the air, not only polluting the environment but also affecting the physical health of the staff.

[0004] Chinese Patent with Publication No. CN216650568U discloses a straw crushing device for straw pellet fuel production, which relates to the technical field of straw pellets. It includes a tank body. A filter screen plate is fixedly installed at the bottom of the tank body. A gear box is fixedly installed at the top of the tank body. A motor is fixedly installed at the top of the gear box. A sealing bearing B is fixedly installed at the bottom of the gear box. A control rod is fixedly inserted inside the sealing bearing B. The top of the control rod extends into the gear box and is fixedly connected to the bottom of the output end of the motor. A driving gear is sleeved on the surface of the control rod. After the straw is stuffed into the inside of the tank body through the feed pipe, the motor is started to control the control rod to drive the driving gear, fan blade B, and anti-blocking wheel to rotate. The rotation of the driving gear will engage the driven gear to control the rotating rod to rotate. The rotating rod will crush and cut the straw through the crushing blade. The rotation of the fan blade A will generate wind to blow the straw downward, thereby preventing the straw from flying out of the tank body during stirring.

[0005] The above solution can effectively crush the straw and effectively prevent the straw from flying out of the tank body during crushing. However, the above solution still cannot effectively cut the longer straw, which will affect the crushing effect of the longer straw. Moreover, the above solution also cannot effectively adsorb and filter the dust and other impurities generated during straw crushing, and fails to solve the problems raised in the above background art.

[0006] Therefore, those skilled in the art have provided a straw crushing device for the production of straw pellet fuel to solve the problems raised in the above background art. Summary of the Invention

[0007] The purpose of the present invention is to provide a straw crushing device for the production of straw pellet fuel, including a crushing box, and further including:

[0008] A transparent closing door, hinged on the front surface of the crushing box, and a collection box is provided at the bottom end inside the crushing box;

[0009] A crushing frame, communicated with the upper surface of the crushing box;

[0010] The first crushing component, symmetrically arranged inside the crushing frame, and used for the primary crushing treatment of straw;

[0011] A cutting component, respectively arranged on the front surface and the rear surface of the crushing frame, and used for the cutting treatment of straw;

[0012] The second crushing component, symmetrically arranged inside the crushing box, and used for the secondary crushing treatment of straw;

[0013] A screening component, arranged inside the crushing box, and used for the screening treatment of the crushed straw;

[0014] A filtering component, arranged on the upper surface of the crushing box, and used for the filtering treatment of the dust generated during the straw crushing.

[0015] As a further improvement of this technical solution, the first crushing component includes rotating rods symmetrically arranged inside the crushing frame. A first C-shaped plate is fixedly connected to the outside of the crushing frame. One end of each of the two rotating rods is rotatably connected to the inner wall of the crushing frame, and the other end of each of the two rotating rods is rotatably connected to the outside of the first C-shaped plate. A first motor is fixedly connected to the outside of the crushing frame. The output shaft of the first motor is fixedly connected to one end of one of the rotating rods through a coupling. Crushing rollers are fixedly connected to the outside of both rotating rods. A driving gear is fixedly connected to the outside of one of the rotating rods, and a driven gear meshing with the driving gear is fixedly connected to the outside of the other rotating rod.

[0016] As a further improvement of this technical solution, the cutting component includes L-shaped plates respectively arranged on the front surface and the rear surface of the crushing frame. Electric telescopic rods are symmetrically arranged on the opposite sides of the two L-shaped plates. The telescopic ends of every two electric telescopic rods are fixedly connected with cutting knives. Guide grooves for the movement of the cutting knives are opened on the front surface and the rear surface of the crushing frame.

[0017] As a further improvement of this technical solution, the second crushing assembly includes crushing rods symmetrically arranged inside the crushing box. A second U-shaped plate is fixedly connected to the outside of the crushing box. One end of each of the two crushing rods is rotatably connected to the inner wall of the crushing box, and the other end of each of the two crushing rods is rotatably connected to the outside of the second U-shaped plate. A second motor is fixedly connected to the outside of the crushing box. The output shaft of the second motor is fixedly connected to one end of one of the crushing rods through a coupling. The two crushing rods are传动连接通过同步带配合带轮传动连接, and crushing blades are evenly spaced on the outside of the two crushing rods.

[0018] As a further improvement of this technical solution, the screening assembly includes reset plates symmetrically arranged on both sides of the inner wall of the crushing box. A sliding rod is fixedly connected to the inside of the reset plate. A moving plate is arranged on the outside of the sliding rod. A reset spring is sleeved on the outside of the sliding rod, and the reset spring abuts between the moving plate and the reset plate. A screening plate is fixedly connected between multiple moving plates. Side plates are fixedly connected to both outer walls of the screening plate. Contact plates are fixedly connected to the upper surfaces of the two side plates. A driving rod is arranged inside the crushing box. One end of the driving rod is rotatably connected to the inner side wall of the crushing box, and the other end of the driving rod extends to the outside of the crushing box and is fixedly connected to a first limiting disc. One end of one of the crushing rods extends to the outside of the crushing box and is fixedly connected to a second limiting disc. One of the crushing rods and the driving rod are传动连接通过同步带配合带轮传动连接. Cam wheels are symmetrically arranged on the outside of the driving rod. Activity grooves for the cam wheels to move are opened on the upper surfaces of the two contact plates.

[0019] As a further improvement of this technical solution, the filtering assembly includes a dust suction pump and a filtering box respectively arranged on the upper surface of the crushing box. An installation groove for installing a filter screen is penetrated and opened on one side of the crushing box. An air suction hood is fixedly connected to one side of the crushing box. The air inlet end of the dust suction pump is connected to the inside of the air suction hood through a pipeline. The air outlet end of the dust suction pump is connected to the inside of the filtering box through a pipeline. Clamping plates are symmetrically arranged at the bottom end inside the filtering box. Filter plates are arranged inside the two clamping plates. Connection plates are fixedly connected to the upper surfaces of the two filter plates. A guiding groove for the filter plates to move is opened on the upper surface of the filtering box. The two connection plates and the filtering box are fixedly connected through bolts. A gas quality detector is fixedly connected to the top end inside the filtering box. The outside of the filtering box is connected to an exhaust pipe through a solenoid valve.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] It should be noted that there is an unclear expression "传动连接通过同步带配合带轮传动连接" in the original text which may need to be further clarified for a more accurate translation. The above translation is based on the best understanding of the context.In the straw pulverizing device for producing straw pellet fuel, a first pulverizing component, a cutting component, a second pulverizing component, a screening component and a filtering component are provided. When the straw needs to be pulverized, the straw only needs to be placed inside the pulverizing frame. At this time, the first pulverizing component starts to operate, and the first pulverizing component can effectively perform the initial pulverizing process on the straw. After the initial pulverizing of the straw is completed, it will naturally fall into the pulverizing box. At this time, the second pulverizing component starts to operate, and the second pulverizing component can pulverize the straw again, thereby effectively improving the pulverizing effect of the straw. After the pulverizing of the straw is completed, it will naturally fall above the screening component. At this time, the screening component can effectively The straw is screened and filtered. After the straw screening and filtering is completed, it will fall into the collection frame for collection and processing. At this time, the straw can be crushed. When the straw to be crushed is long, the cutting component starts to run. At this time, the cutting component can effectively cut the longer straw, so that the crushing device can effectively crush the longer straw comprehensively. In the process of straw crushing, a large amount of dust and other impurities will be generated. At this time, the filtering component starts to run. The filtering component can effectively adsorb and filter dust and other impurities, thereby preventing dust and other impurities from polluting the environment. At the same time, it can prevent dust and other impurities from affecting the health of the staff, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0023] Figure 2 It is a cutaway three-dimensional structural schematic diagram of a crushing box and a crushing frame in the utility model;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the screening component in the utility model;

[0025] Figure 4 It is a cutaway three-dimensional structural schematic diagram of the filter box and the air suction hood in the utility model;

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the gas quality detector in the utility model;

[0027] Figure 6 for Figure 3 Schematic diagram of the enlarged structure of the A area in the middle;

[0028] Figure 7 for Figure 3 Schematic diagram of the enlarged structure of the middle B area;

[0029] Figure 8 for Figure 5 Schematic diagram of the enlarged structure of the C area in the middle.

[0030] The meanings of the reference numerals in the figure are as follows:

[0031] 1. Crushing box; 2. Transparent closing door; 3. Crushing frame; 4. First C-shaped plate; 5. Second C-shaped plate; 6. L-shaped plate; 7. Electric telescopic rod; 8. Cutting knife; 9. First motor; 10. Rotating rod; 11. Crushing roller; 12. Driving gear; 13. Driven gear; 14. Second motor; 15. Crushing rod; 16. Crushing blade; 17. Synchronous belt; 18. Reset plate; 19. Screening plate; 20. Collection box; 21. Side plate; 22. First limiting disk; 23. Second limiting disk; 24. Filter screen; 25. Suction hood; 26. Dust suction pump; 27. Filter box; 28. Clamping plate; 29. Filter plate; 30. Connecting plate; 31. Contact plate; 32. Driving rod; 33. Cam; 34. Slide bar; 35. Moving plate; 36. Reset spring; 37. Gas quality detector; 38. Solenoid valve; 39. Exhaust pipe. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figure 1 - Figure 8 As shown, this embodiment provides a straw crushing device for the production of straw pellet fuel, including a crushing box 1, and further including:

[0034] A transparent closing door 2, hinged to the front surface of the crushing box 1, and a collection box 20 is provided at the inner bottom end of the crushing box 1;

[0035] A crushing frame 3, connected to the upper surface of the crushing box 1;

[0036] The first crushing assembly, symmetrically arranged inside the crushing frame 3 and used for initially crushing straw;

[0037] The cutting assembly, respectively arranged on the front surface and the rear surface of the crushing frame 3 and used for cutting straw;

[0038] The second crushing assembly, symmetrically arranged inside the crushing box 1 and used for secondarily crushing straw;

[0039] The screening assembly, arranged inside the crushing box 1 and used for screening the crushed straw;

[0040] The filtering component is arranged on the upper surface of the crushing box 1 and is used for filtering the dust generated during the straw crushing process.

[0041] The above working principle: When it is necessary to crush the straw, just place the straw inside the crushing frame 3 first. At this time, the first crushing component starts to operate. The first crushing component can effectively conduct primary crushing on the straw. After the primary crushing of the straw is completed, it will naturally fall into the interior of the crushing box 1. At this time, the second crushing component starts to operate. The second crushing component can crush the straw again, thereby effectively improving the crushing effect of the straw. After the straw is crushed, it will naturally fall above the screening component. At this time, the screening component can effectively conduct screening and filtering on the crushed straw. After the screening and filtering of the straw is completed, it will fall into the collection box 20 for collection and processing. At this time, the straw can be crushed. When the straw to be crushed is relatively long, the cutting component starts to operate. At this time, the cutting component can effectively cut the relatively long straw, so that the crushing device can effectively conduct comprehensive crushing on the relatively long straw. During the straw crushing process, a large amount of dust and other impurities will be generated. At this time, the filtering component starts to operate. The filtering component can effectively adsorb and filter the dust and other impurities, thereby preventing the dust and other impurities from polluting the environment and preventing the dust and other impurities from affecting the physical health of the staff. It saves time and effort.

[0042] In order to effectively conduct primary crushing on the straw, the first crushing component includes rotating rods 10 symmetrically arranged inside the crushing frame 3. A first C-shaped plate 4 is fixedly connected to the outside of the crushing frame 3. One end of each of the two rotating rods 10 is rotatably connected to the inner wall of the crushing frame 3, and the other end of each of the two rotating rods 10 is rotatably connected to the outside of the first C-shaped plate 4. A first motor 9 is fixedly connected to the outside of the crushing frame 3. The output shaft of the first motor 9 is fixedly connected to one end of one of the rotating rods 10 through a coupling. Crushing rollers 11 are fixedly connected to the outside of both rotating rods 10. A driving gear 12 is fixedly connected to the outside of one of the rotating rods 10, and a driven gear 13 meshing with the driving gear 12 is fixedly connected to the outside of the other rotating rod 10. When it is necessary to conduct primary crushing on the straw, just place the straw in the crushing frame 3 first. At this time, the first motor 9 starts to operate, driving one of the rotating rods 10 to rotate synchronously. One of the rotating rods 10 then drives the driving gear 12 to rotate synchronously. The driving gear 12 then drives the driven gear 13 to rotate synchronously. At this time, the two rotating rods 10 can be rotated synchronously. The rotating rods 10 then drive the crushing rollers 11 to rotate synchronously. At this time, the primary crushing of the straw can be conducted.

[0043] Considering that when processing long straws, it is necessary to first cut the long straws, the cutting assembly includes L-shaped plates 6 respectively arranged on the front surface and the rear surface of the crushing box 3. Electric telescopic rods 7 are symmetrically arranged on the opposite sides of the two L-shaped plates 6. The telescopic ends of every two electric telescopic rods 7 are fixedly connected with a cutting knife 8. Guide grooves for the movement of the cutting knife 8 are opened on the front surface and the rear surface of the crushing box 3. When it is necessary to cut long straws, just place the straws inside the crushing box 3 first. At this time, the electric telescopic rods 7 start to operate, driving the cutting knives 8 to move synchronously. At this time, the long straws can be cut through the cooperation between the two cutting knives 8, so as to effectively improve the crushing effect and efficiency of the straws.

[0044] In order to effectively perform secondary crushing on the straws and thus effectively improve the crushing effect of the straws, the second crushing assembly includes crushing rods 15 symmetrically arranged inside the crushing box 1. A second C-shaped plate 5 is fixedly connected to the outside of the crushing box 1. One end of each of the two crushing rods 15 is rotatably connected to the inner wall of the crushing box 1, and the other end of each of the two crushing rods 15 is rotatably connected to the outside of the second C-shaped plate 5. A second motor 14 is fixedly connected to the outside of the crushing box 1. The output shaft of the second motor 14 is fixedly connected to one end of one of the crushing rods 15 through a coupling. The two crushing rods 15 are connected by a synchronous belt 17 and pulley drive. Crushing blades 16 are equidistantly arranged on the outside of the two crushing rods 15. When it is necessary to perform secondary crushing on the straws, the second motor 14 starts to operate, driving one of the crushing rods 15 to rotate synchronously. Since the two crushing rods 15 are connected by a synchronous belt 17 and pulley drive, the two crushing rods 15 will rotate synchronously at this time, driving the crushing blades 16 to rotate synchronously. At this time, the straws can be secondarily crushed by the crushing blades 16, so as to effectively improve the crushing effect of the straws.

[0045] In order to effectively screen the crushed straw, the screening assembly includes a reset plate 18 symmetrically arranged on both sides of the inner wall of the crushing box 1, a sliding rod 34 is fixedly connected inside the reset plate 18, a movable plate 35 is arranged outside the sliding rod 34, a reset spring 36 is sleeved outside the sliding rod 34, and the reset spring 36 abuts between the movable plate 35 and the reset plate 18, a screening plate 19 is fixedly connected between the plurality of movable plates 35, side plates 21 are fixedly connected on both sides of the outer wall of the screening plate 19, and the upper surfaces of the two side plates 21 are fixedly connected to the abutting plates 31, a driving rod 32 is arranged inside the crushing box 1, one end of the driving rod 32 is rotatably connected to the inner side wall of the crushing box 1, and the other end of the driving rod 32 extends to the outside of the crushing box 1 and is fixedly connected to the first limiting plate 22, one end of one of the crushing rods 15 extends to the outside of the crushing box 1 and is fixedly connected to the second limiting plate 23, one of the crushing rods 15 is connected to the driving rod 32 through a synchronous belt 17 and a pulley transmission, and the driving rod 32 is symmetrically provided with a convex The upper surfaces of the wheel 33 and the two contact plates 31 are both provided with movable grooves for the movement of the cam 33. When the straw is crushed, it will naturally fall onto the screening plate 19. Since the crushing rod 15 and the driving rod 32 are connected by the synchronous belt 17 and the pulley for transmission, the driving rod 32 will rotate synchronously at this time, driving the cam 33 to rotate synchronously, and the cam 33 will squeeze the contact plate 31 synchronously, and the contact plate 31 will drive the side plate 21 to move synchronously, and the side plate 21 will drive the screening plate 19 to move synchronously. When the screening plate 19 moves downward, it will drive the moving plate 35 to move synchronously, and the moving plate 35 will squeeze the reset spring 36 synchronously. When the cam 33 continues to rotate, the reset spring 36 will reset and move, driving the moving plate 35 to reset and move synchronously, and the moving plate 35 will drive the screening plate 19 to move synchronously. At this time, the screening plate 19 can be repeatedly moved up and down, so that the crushed straw can be effectively screened by the screening plate 19.

[0046] In addition, in order to effectively absorb and filter the dust and other impurities generated during the straw crushing process, the filtering assembly includes a dust suction pump 26 and a filter box 27 respectively arranged on the upper surface of the crushing box 1. A mounting groove for installing the filter 24 is provided on one side of the crushing box 1. An air suction hood 25 is fixedly connected to one side of the crushing box 1. The air inlet end of the dust suction pump 26 is connected to the inside of the air suction hood 25 through a pipeline, and the air outlet end of the dust suction pump 26 is connected to the inside of the filter box 27 through a pipeline. The inner bottom end of the filter box 27 is symmetrically provided with a clamping plate 28, and the two clamping plates 28 are connected to the inner bottom end of the filter box 27. 8 is provided with a filter plate 29 inside, the upper surfaces of the two filter plates 29 are fixedly connected with a connecting plate 30, the upper surface of the filter box 27 is provided with a guide groove for the filter plate 29 to move, the two connecting plates 30 are fixedly connected to the filter box 27 by bolts, the top of the filter box 27 is fixedly connected with a gas quality detector 37, and the outside of the filter box 27 is connected with an exhaust pipe 39 through a solenoid valve 38. During the straw crushing process, a large amount of dust and other impurities will be generated. At this time, the dust suction pump 26 starts to run, and the dust suction pump 26 can effectively remove the dust and other impurities inside the crushing box 1. Impurities are adsorbed into the interior of the filter box 27 through the suction hood 25. When impurities such as dust are transmitted to the interior of the filter box 27, the filter plate 29 can effectively adsorb and filter the impurities such as dust. After the adsorption and filtration of impurities such as dust are completed, the gas quality detector 37 will detect and process the gas quality inside the filter box 27. When the gas quality reaches the emission standard, the gas quality detector 37 will transmit a signal to the controller, and the controller will control the solenoid valve 38 to open. At this time, the filtered gas can be discharged through the exhaust pipe 39, thereby preventing the gas from carrying impurities such as dust. The gas is transmitted to the external environment and pollutes the environment. The filter net 24 can effectively intercept and filter the crushed straw, thereby preventing the dust pump 26 from sucking the crushed straw into the filter box 27. When the filter plate 29 needs to be disassembled and replaced, it is only necessary to unscrew the bolts first and then pull the connecting plate 30. At this time, the connecting plate 30 will drive the filter plate 29 to move synchronously. When the filter plate 29 is separated from the inside of the clamping plate 28, the filter plate 29 can be disassembled, thereby facilitating the staff to replace the filter plate 29.

[0047] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A straw pulverizing device for producing straw pellet fuel, comprising a pulverizing box (1), characterized in that: It further includes: A transparent closing door (2), hinged to the front end surface of the crushing box (1), and a collection box (20) is provided at the inner bottom end of the crushing box (1); A crushing frame (3), connected to the upper surface of the crushing box (1); A first crushing component, symmetrically arranged inside the crushing frame (3) and used for initially crushing the straw; A cutting component, respectively arranged on the front end surface and the rear end surface of the crushing frame (3) and used for cutting the straw; A second crushing component, symmetrically arranged inside the crushing box (1) and used for secondarily crushing the straw; A screening component, arranged inside the crushing box (1) and used for screening the crushed straw; A filtering component, arranged on the upper surface of the crushing box (1) and used for filtering the dust generated during the straw crushing.

2. The straw pulverizing device for producing straw pellet fuel according to claim 1, characterized in that: The first crushing component includes rotating rods (10) symmetrically arranged inside the crushing frame (3). A first U-shaped plate (4) is fixedly connected to the outside of the crushing frame (3). One end of each of the two rotating rods (10) is rotatably connected to the inner wall of the crushing frame (3), and the other end of each of the two rotating rods (10) is rotatably connected to the outside of the first U-shaped plate (4). A first motor (9) is fixedly connected to the outside of the crushing frame (3). The output shaft of the first motor (9) is fixedly connected to one end of one of the rotating rods (10) through a coupling. Crushing rollers (11) are fixedly connected to the outside of each of the two rotating rods (10). A driving gear (12) is fixedly connected to the outside of one of the rotating rods (10), and a driven gear (13) meshing with the driving gear (12) is fixedly connected to the outside of the other rotating rod (10).

3. The straw pulverizing device for producing straw pellet fuel according to claim 1, characterized in that: The cutting component includes L-shaped plates (6) respectively arranged on the front end surface and the rear end surface of the crushing frame (3). Electric telescopic rods (7) are symmetrically arranged on the opposite sides of the two L-shaped plates (6). The telescopic ends of each two electric telescopic rods (7) are fixedly connected with a cutting knife (8). Guide grooves for the cutting knife (8) to move are opened on the front end surface and the rear end surface of the crushing frame (3).

4. The straw pulverizing device for producing straw pellet fuel according to claim 1, characterized in that: The second crushing component includes crushing rods (15) symmetrically arranged inside the crushing box (1). A second U-shaped plate (5) is fixedly connected to the outside of the crushing box (1). One end of each of the two crushing rods (15) is rotatably connected to the inner wall of the crushing box (1), and the other end of each of the two crushing rods (15) is rotatably connected to the outside of the second U-shaped plate (5). A second motor (14) is fixedly connected to the outside of the crushing box (1). The output shaft of the second motor (14) is fixedly connected to one end of one of the crushing rods (15) through a coupling. The two crushing rods (15) are connected by a synchronous belt (17) in cooperation with pulley transmission. Crushing blades (16) are equidistantly arranged on the outside of each of the two crushing rods (15).

5. A straw pulverizing device for producing straw pellet fuel according to claim 4, characterized in that: The screening assembly comprises a reset plate (18) symmetrically arranged on both sides of the inner wall of the crushing box (1), the reset plate (18) is fixedly connected to the inside of the reset plate (18), the outside of the slide bar (34) is provided with a moving plate (35), the outside of the slide bar (34) is sleeved with a reset spring (36), the reset spring (36) abuts between the moving plate (35) and the reset plate (18), a screening plate (19) is fixedly connected between the plurality of the moving plates (35), the outer walls of the screening plate (19) are fixedly connected to side plates (21) on both sides, the upper surfaces of the two side plates (21) are fixedly connected to the abutment plates (31), the crushing box (1) A driving rod (32) is provided inside, one end of the driving rod (32) is rotatably connected to the inner wall of the crushing box (1), the other end of the driving rod (32) extends to the outside of the crushing box (1) and is fixedly connected to a first limiting plate (22), one end of one of the crushing rods (15) extends to the outside of the crushing box (1) and is fixedly connected to a second limiting plate (23), one of the crushing rods (15) and the driving rod (32) are connected through a synchronous belt (17) and a pulley transmission, cams (33) are symmetrically provided on the outside of the driving rod (32), and movable grooves for the cams (33) to move are provided on the upper surfaces of the two contact plates (31).

6. The straw pulverizing device for producing straw pellet fuel according to claim 1, characterized in that: The filter assembly comprises a dust suction pump (26) and a filter box (27) respectively arranged on the upper surface of the crushing box (1); a mounting groove for mounting a filter screen (24) is provided through one side of the crushing box (1); an air suction cover (25) is fixedly connected to one side of the crushing box (1); an air inlet end of the dust suction pump (26) is connected to the interior of the air suction cover (25) through a pipeline; an air outlet end of the dust suction pump (26) is connected to the interior of the filter box (27) through a pipeline; a clamping plate (25) is symmetrically provided at the bottom end of the interior of the filter box (27). 8), filter plates (29) are provided inside the two clamping plates (28), the upper surfaces of the two filter plates (29) are fixedly connected to connecting plates (30), the upper surface of the filter box (27) is provided with guide grooves for the filter plates (29) to move, the two connecting plates (30) and the filter box (27) are fixedly connected by bolts, the top of the inner part of the filter box (27) is fixedly connected to a gas quality detector (37), and the outside of the filter box (27) is connected to an exhaust pipe (39) through a solenoid valve (38).

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