Straw two-stage crushing equipment

Abstract

The straw two-stage crushing equipment relates to the technical field of crushers and comprises a base and a crusher shell, the crusher shell is installed above the base, a feeding port and a discharging port are formed in the upper side and the lower side of the crusher shell correspondingly, and a lining plate is installed on the inner wall of the crusher shell; and a first rotor and a second rotor are rotatably installed in the pulverizer shell, hammer head assemblies are installed on the first rotor and the second rotor, and a cleaning assembly is arranged on the feeding port. According to the straw two-stage crushing equipment, the first rotor and the second rotor which are arranged up and down are independently driven to rotate, the hammer head assembly conducts two-stage continuous impact crushing on straw, the friction crushing effect is enhanced in cooperation with the anti-skid protruding edges on the surface of the lining plate, straw toughness fibers can be thoroughly cut off, long fiber coarse particle residues are effectively reduced, the particle size of crushed materials is more uniform, and the crushing efficiency is improved. The subsequent resource utilization requirements are met.

Description

Technical Field

[0001] This invention relates to the field of crusher technology, specifically to a two-stage straw crushing device. Background Technology

[0002] Straw, as a massive renewable biomass resource in agricultural production, is produced in vast quantities every year along with grain harvest. Rich in nutrients such as cellulose and hemicellulose, it has extremely high resource utilization value in areas such as feed processing, biomass energy conversion, organic fertilizer production, and edible fungi cultivation. For example, crushed straw can be used as a high-quality feed ingredient, improving the digestibility and absorption efficiency of livestock and poultry; it can be converted into clean energy through biomass gasification and solidification technologies, replacing fossil fuels; and it can be fermented and decomposed into organic fertilizer, improving soil structure and realizing the recycling of agricultural waste, aligning with the industrial trend of green agriculture and sustainable development.

[0003] The efficiency of straw resource utilization depends primarily on the precision of the crushing process. The more uniform and smaller the particle size of the crushed straw, the more beneficial it is for subsequent processing. Currently, the mainstream straw crushing equipment is mainly a single-stage crushing mechanism, whose working principle is mostly to crush straw through a single method such as hammer impact, blade cutting, or roller grinding.

[0004] For example, Chinese utility model patent application number 202122834338.5 discloses a straw crushing device for green agriculture. The crushed straw is directly transported to the inside of the mixing box through a pipeline, and the vertical rod and mixing rod are rotated by a mixing motor, thereby mixing the straw fragments with the medicine. There is no need to transport the straw fragments, thus improving work efficiency. However, the device still has certain defects. The straw can only be crushed in a single stage, which makes it difficult to completely cut the tough fiber structure in the straw. After crushing, a large number of long fibrous coarse particles remain, with large differences in particle size, which makes it impossible to achieve subsequent resource utilization.

[0005] Therefore, we propose a two-stage straw crushing device to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a two-stage straw crushing device to solve the problem mentioned in the background art that the current market can only crush straw in a single stage, which makes it difficult to completely cut the tough fiber structure in straw. After crushing, a large number of long fibrous coarse particles remain, with large differences in particle size, which makes it impossible to achieve subsequent resource utilization.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a straw two-stage crushing device, comprising a base and a crusher shell, wherein the crusher shell is installed on the top of the base, and the upper and lower sides of the crusher shell are respectively provided with a feed inlet and a discharge outlet, the inner wall of the crusher shell is provided with a liner, and a first rotor and a second rotor are rotatably installed inside the crusher shell, and hammer assemblies are installed on both the first rotor and the second rotor. A cleaning component is provided on the feed inlet.

[0008] Preferably, the base is integrally formed from Q235 carbon steel, and a positioning boss is provided on the top of the base corresponding to the installation position of the crusher shell. The positioning boss is adapted to engage with the positioning groove on the bottom of the crusher shell.

[0009] With the above structural design, the base provides stable support, preventing the equipment from shifting due to vibration during the crushing process. At the same time, the engaging structure between the positioning boss and the positioning groove on the outer shell ensures the coaxiality and stability of the rotor during rotation.

[0010] Preferably, the crusher shell is made of Q235 carbon steel and includes two halves of the shell. The two halves of the shell are detachably connected by bolts. The top of the shell is provided with a flared structure corresponding to the feed inlet, and the bottom of the shell is provided with an inclined guide plate corresponding to the discharge outlet.

[0011] With the above structural design, the flared structure guides the straw into the crushing chamber in a concentrated manner, preventing it from scattering; the detachable design of the two halves of the shell makes it easy to open the outer shell to maintain and replace the internal rotor and hammer assembly.

[0012] Preferably, the discharge port is welded and fixed to the bottom of the crusher shell, and a screen plate seat is provided below the discharge port. The screen plate seat is detachably connected to the discharge port by bolts, and screen plates with different apertures can be installed in the screen plate seat.

[0013] With the above structural design, when the crushed material falls through the discharge port, the screen plate in the screen plate seat classifies and screens the material, and the material that meets the particle size requirements is discharged through the screen holes; by removing the bolts on the screen plate seat, screen plates with different hole diameters can be replaced to adapt to different crushing particle size requirements.

[0014] Preferably, the liner is made of wear-resistant alloy material, and the liner is fixedly connected to the inner wall of the crusher shell by countersunk bolts. The surface of the liner is provided with anti-slip ridges, and the coverage area of ​​the liner corresponds to the rotation trajectory area of ​​the first rotor and the second rotor.

[0015] With the above structural design, the liner fits against the inner wall of the outer shell and covers the rotor rotation trajectory area. The anti-slip ridges on the surface increase the friction with the straw and improve the crushing effect. The wear-resistant alloy material reduces the wear caused by the impact of the hammer assembly, and the countersunk bolt connection method avoids the bolts being exposed and damaged by impact, thus extending the service life of the liner.

[0016] Preferably, a first servo motor and a second servo motor are mounted on the upper surface of the base. The output shaft of the first servo motor is connected to the first rotor via a first connecting belt, and the output shaft of the second servo motor is connected to the second rotor via a second connecting belt.

[0017] With the above structural design, the first servo motor transmits power to the first rotor through the first connecting belt, and the second servo motor transmits power to the second rotor through the second connecting belt, so that the two rotors rotate independently to grade and crush the straw, ensuring a continuous and efficient crushing process.

[0018] Preferably, the rotation diameter of both the first rotor and the second rotor is 800mm, and both the first rotor and the second rotor are equipped with balance wheels; the hammer assembly is made of 65 manganese and is fixedly connected to the first rotor and the second rotor by positioning pins; the first servo motor and the second servo motor are both Y180L-4, with a rated power of 30kw, a protection level of IP44, a rated frequency of 50Hz, and a rated voltage of 380V.

[0019] With the above structural design, the first rotor and the second rotor drive the hammer assembly to rotate, thereby crushing the straw.

[0020] Preferably, the cleaning assembly includes a vibration pump, a connecting plate, a connecting frame, a ball screw, a slider, a groove, a connecting block, a connecting strip, a pressure plate, a magnetic strip, a hinge seat, positioning bolts, and an adjusting motor. The vibration pump is installed on the front surface of the feed inlet, the connecting plate is installed on the right side of the feed inlet, the connecting frame is installed above the feed inlet, the ball screw is installed above the connecting plate, and the slider is installed on the ball screw. The connecting strip is installed on the left side of the slider through the connecting block, and the pressure plate is hinged below the connecting strip.

[0021] With the above structural design, when straw is fed in, the vibration pump is started to vibrate the feed inlet to prevent the straw from clogging the feed inlet due to being loose or damp. If straw remains in the feed inlet, the pressure plate is rotated to a horizontal position and fixed by engaging the positioning bolts with the positioning holes of the connecting strip. The adjusting motor is then started to drive the ball screw to rotate, causing the slider to move down along the slide groove. This, in turn, moves the pressure plate downward through the connecting block and connecting strip, pressing the remaining straw into the crushing chamber. When not in use, the folded pressure plate is magnetically fixed to the connecting strip by magnetic strips to avoid occupying the feed space.

[0022] Preferably, an adjusting motor is installed on the lower surface of the connecting plate, and the upper part of the adjusting motor is connected to a ball screw through an output shaft. A sliding groove is provided on the connecting frame, and the connecting block is slidably connected to the sliding groove.

[0023] With the above structural design, after startup, the drive ball screw rotates, which drives the slider to slide along the groove. The slider is connected to the connecting strip through the connecting block, which in turn drives the pressure plate to move up and down, thereby achieving the downward pressure and cleaning of the residual straw at the feed inlet.

[0024] Preferably, a magnetic strip is installed on the upper surface of the pressure plate. When the pressure plate is folded, the magnetic strip is magnetically connected to the connecting strip. A hinge seat is installed on the upper surface of the pressure plate. The pressure plate is hinged to the connecting strip through the hinge seat. A positioning bolt is installed on the hinge seat. When the pressure plate is unfolded, the positioning bolt is rotated and engages with the positioning holes on the front and rear sides of the connecting strip.

[0025] With the above structural design, the pressure plate is hinged to the connecting strip via a hinge seat, which can achieve folding and unfolding; when unfolded, it is positioned by locking with positioning bolts to ensure stability during the pressing process; when folded, it is magnetically fixed to the connecting strip by magnetic strips to avoid occupying the feeding space and not affecting normal feeding.

[0026] Compared with the prior art, the beneficial effects of the present invention are: the straw two-stage crushing equipment: 1. Dual-stage crushing improves quality and efficiency: The first and second rotors, arranged vertically, are driven to rotate independently. The hammer assembly continuously impacts and crushes the straw in two stages. Combined with the anti-slip ridges on the liner surface, the friction crushing effect is enhanced. This can completely cut the tough fibers of the straw, effectively reduce the residue of long fiber coarse particles, and make the crushed material more uniform in particle size, meeting the requirements for subsequent resource utilization. 2. Smooth feeding, anti-clogging and high efficiency: The feed inlet is equipped with a vibration pump and mechanical cleaning components. The vibration pump can prevent clogging caused by loose or damp straw in advance. Residual straw can be cleaned by unfolding the pressure plate and driving the ball screw to push the pressure plate down, improving the operating efficiency of the equipment. 3. Convenient maintenance and reduced costs: The crusher shell adopts a two-half detachable shell design. The hammer assembly is fixed to the rotor by positioning pins, and the screen plate seat is detachably connected to the discharge port, which makes it easy to quickly open the equipment to replace worn hammers, liners and screen plates of different apertures, reducing maintenance time and labor costs; the pressure plate of the cleaning component can be folded and magnetically fixed, without occupying the feeding space, and the operation is flexible. 4. Stable and reliable equipment operation: The base is made of Q235 carbon steel in one piece, with a precise locking structure between the positioning boss and the positioning groove of the outer shell, which effectively offsets the vibration during the crushing process and prevents the equipment from shifting; the rotor is equipped with a balance wheel, and the motor transmits power stably through the connecting belt, ensuring the coaxiality and stability of the dual rotors when rotating at high speed, and extending the service life of the equipment; 5. Flexible and diverse application scenarios: The discharge port screen plate holder can be adapted to install screen plates with different apertures, and can adjust the particle size of the crushed material according to different subsequent uses such as feed processing, biomass energy conversion, and organic fertilizer production to meet diverse production needs; the inlet funnel-shaped flared structure is suitable for batch feeding and takes into account different feeding methods and application scenarios. 6. Practical and durable structural design: The liner is made of wear-resistant alloy material, and the countersunk bolt connection avoids damage to exposed bolts and reduces impact wear; the hammer assembly is made of 65 manganese material, which has high hardness and strong wear resistance; the Q235 carbon steel material of the base and the crusher shell ensures the overall structural strength of the equipment and is suitable for the working conditions of high-frequency straw crushing. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the left-side structure of the present invention; Figure 3 This is a schematic diagram of the rear view structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the pulverizer shell of the present invention; Figure 5 This is a schematic diagram of the feed inlet structure of the present invention; Figure 6 This is a schematic diagram of the structure of the pressure plate of the present invention when it is unfolded; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a schematic diagram of the structure of the pressure plate during the pressing of the material according to the present invention.

[0028] In the diagram: 1. Base; 2. Crusher housing; 3. Feed inlet; 4. Discharge outlet; 5. Liner plate; 6. First rotor; 7. Second rotor; 8. Hammer assembly; 9. First servo motor; 10. Second servo motor; 11. First connecting belt; 12. Second connecting belt; 13. Vibration pump; 14. Connecting plate; 15. Connecting frame; 16. Ball screw; 17. Slider; 18. Slide groove; 19. Connecting block; 20. Connecting strip; 21. Pressure plate; 22. Magnetic strip; 23. Hinge seat; 24. Positioning bolt; 25. Adjusting motor. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-8This invention provides a technical solution: a two-stage straw crushing device, comprising a base 1, a crusher shell 2, a feed inlet 3, a discharge outlet 4, a liner 5, a first rotor 6, a second rotor 7, a hammer assembly 8, a first servo motor 9, a second servo motor 10, a first connecting belt 11, a second connecting belt 12, a vibration pump 13, a connecting plate 14, a connecting frame 15, a ball screw 16, a slider 17, a slide groove 18, a connecting block 19, a connecting strip 20, a pressure plate 21, a magnetic strip 22, a hinge seat 23, positioning bolts 24, and an adjusting motor 25. The crusher shell 2 is installed above the base 1. The base 1 is made of Q235 stainless steel. The base 1 is made of one piece of carbon steel. A positioning boss is provided on the top of the base 1 corresponding to the installation position of the crusher housing 2. The positioning boss fits and engages with the positioning groove on the bottom of the crusher housing 2. The base 1 provides stable support, preventing equipment displacement due to vibration during crushing. Simultaneously, the engagement structure between the positioning boss and the positioning groove ensures the coaxiality and stability of the rotor during rotation. The crusher housing 2 has a feed inlet 3 and a discharge outlet 4 installed on its upper and lower sides, respectively. The crusher housing 2 is made of Q235 carbon steel and consists of two halves of the housing, which are detachably connected by bolts. A flared structure is provided on the top of the housing corresponding to the feed inlet 3. An inclined guide plate is provided at the bottom of the body corresponding to the discharge port 4. The flared structure guides the straw into the crushing chamber in a concentrated manner, preventing it from scattering. The detachable design of the two halves of the shell facilitates the opening of the outer shell for maintenance and replacement of the internal rotor and hammer assembly 8. The discharge port 4 is welded and fixed to the bottom of the crusher outer shell 2. A screen plate seat is provided below the discharge port 4. The screen plate seat is detachably connected to the discharge port 4 by bolts. Screen plates of different aperture sizes can be installed in the screen plate seat. When the crushed material falls through the discharge port 4, the screen plate in the screen plate seat classifies and screens the material. Material that meets the particle size requirements is discharged through the screen holes. By removing the bolts on the screen plate seat, the screen plate can be replaced. The screen plate with the same aperture can adapt to different crushing particle size requirements. The inner wall of the crusher shell 2 is equipped with a liner plate 5. The first rotor 6 and the second rotor 7 are rotatably installed inside the crusher shell 2. Both the first rotor 6 and the second rotor 7 are equipped with hammer assemblies 8. The liner plate 5 is made of wear-resistant alloy material. The liner plate 5 is fixedly connected to the inner wall of the crusher shell 2 by countersunk bolts. The surface of the liner plate 5 is provided with anti-slip ridges. The coverage area of ​​the liner plate 5 corresponds to the rotation trajectory area of ​​the first rotor 6 and the second rotor 7. The liner plate 5 fits against the inner wall of the shell and covers the rotation trajectory area of ​​the rotor. The anti-slip ridges on the surface increase the friction with the straw and improve the crushing effect.Wear-resistant alloy material reduces wear on the hammer assembly 8 during impact; countersunk bolt connection prevents exposed bolts from being damaged by impact, extending the service life of the liner 5. A first servo motor 9 and a second servo motor 10 are mounted on the upper surface of the base 1. The output shaft of the first servo motor 9 is connected to the first rotor 6 via a first connecting belt 11, and the output shaft of the second servo motor 10 is connected to the second rotor 7 via a second connecting belt 12. The first servo motor 9 transmits power to the first rotor 6 via the first connecting belt 11, and the second servo motor 10 transmits power to the second rotor 7 via the second connecting belt 12. Two rotors rotate independently to grade and crush the straw, ensuring a continuous and efficient crushing process. The first rotor 6 and the second rotor 7 both have a rotation diameter of 800mm and are equipped with balance wheels. The hammer assembly 8 is made of 65 manganese and is fixedly connected to the first rotor 6 and the second rotor 7 by positioning pins. The first servo motor 9 and the second servo motor 10 are both Y180L-4 models with a rated power of 30kw, a protection level of IP44, a rated frequency of 50Hz, and a rated voltage of 380V. The first rotor 6 and the second rotor 7 drive the hammer assembly 8 to rotate, crushing the straw. A cleaning assembly is provided on the feed inlet 3. The cleaning assembly includes a vibratory pump 13, a connecting plate 14, a connecting frame 15, a ball screw 16, a slider 17, a slide 18, a connecting block 19, a connecting strip 20, a pressure plate 21, a magnetic strip 22, a hinge seat 23, a positioning bolt 24, and an adjusting motor 25. The vibratory pump 13 is installed on the front surface of the feed inlet 3. The connecting plate 14 is installed on the right side of the feed inlet 3. The connecting frame 15 is installed above the feed inlet 3. The ball screw 16 is installed above the connecting plate 14, and the slider 17 is installed on the ball screw 16. The left side of the slider 17 is connected to the connecting block 19. The connecting strip 20 has a pressure plate 21 hinged to its lower part. When straw is fed in, the vibration pump 13 is started to vibrate the feed inlet 3 to prevent the straw from clogging the feed inlet 3 due to looseness or moisture. If straw remains in the feed inlet 3, the pressure plate 21 is rotated to a horizontal position and fixed by the positioning bolt 24 engaging with the positioning hole of the connecting strip 20. The adjusting motor 25 is started to drive the ball screw 16 to rotate, which drives the slider 17 to move down along the slide groove 18. This, in turn, drives the pressure plate 21 to move downward through the connecting block 19 and the connecting strip 20, pressing the remaining straw into the crushing chamber. When not in use, the pressure plate 21 is folded and connected to the connecting strip 21 by the magnetic strip 22. 0. Magnetic fixation avoids occupying the feeding space. An adjusting motor 25 is installed on the lower surface of the connecting plate 14, and the upper part of the adjusting motor 25 is connected to the ball screw 16 via an output shaft. A sliding groove 18 is provided on the connecting frame 15, and the connecting block 19 is slidably connected to the sliding groove 18. After starting, the ball screw 16 is driven to rotate, causing the slider 17 to slide along the sliding groove 18. The slider 17 is connected to the connecting strip 20 via the connecting block 19, thereby driving the pressure plate 21 to move up and down, realizing the downward pressure and cleaning of residual straw at the feed inlet 3. A magnetic strip 22 is installed on the upper surface of the pressure plate 21. When the pressure plate 21 is folded, the magnetic strip 22 and the connecting strip 20 are connected. The connecting strip 20 is magnetically connected, and a hinge seat 23 is installed on the upper surface of the pressure plate 21. The pressure plate 21 is hinged to the connecting strip 20 through the hinge seat 23, and a positioning bolt 24 is installed on the hinge seat 23. When the pressure plate 21 is unfolded, the positioning bolt 24 is rotated, and the positioning bolt 24 is engaged with the positioning holes on the front and rear sides of the connecting strip 20. The pressure plate 21 is hinged to the connecting strip 20 through the hinge seat 23, which can realize folding and unfolding. When unfolded, the positioning bolt 24 is engaged and positioned to ensure stability during the pressing process. When folded, the magnetic strip 22 is magnetically fixed to the connecting strip 20 to avoid occupying the feeding space and not affecting normal feeding.

[0031] Working principle: When using this straw double-stage crushing equipment, firstly, the first servo motor 9 and the second servo motor 10 are started. The first servo motor 9 transmits power to the first rotor 6 through the first connecting belt 11, and the second servo motor 10 transmits power to the second rotor 7 through the second connecting belt 12, so that the first rotor 6 and the second rotor 7 drive their respective hammer assemblies 8 to rotate synchronously. The balance wheel on the rotor ensures stable rotation.

[0032] Before feeding the straw, start the vibration pump 13 on the front surface of the feed inlet 3. The vibration pump 13 drives the feed inlet 3 to vibrate. The straw is guided by the flared structure at the top of the feed inlet 3 and enters the crusher shell 2. During the crushing process, the liner 5 is fixed to the inner wall of the crusher shell 2 by countersunk bolts. The anti-slip ridges on its surface increase the friction with the straw. Together with the hammer assembly 8, the straw is crushed by two-stage impact.

[0033] If straw residue clogs the feed inlet 3, unfold the pressure plate 21 hinged to the hinge seat 23 below the connecting strip 20, rotate the positioning bolt 24 on the hinge seat 23 to engage with the positioning holes on the front and rear sides of the connecting strip 20 to fix the pressure plate 21, start the adjusting motor 25, the adjusting motor 25 drives the ball screw 16 to rotate through the output shaft, the slider 17 on the ball screw 16 slides down along the slide groove 18 on the connecting frame 15, the slider 17 drives the connecting strip 20 to move down through the connecting block 19, and then drives the pressure plate 21 to move down, pressing the residual straw into the crushing chamber; after cleaning, start the adjusting motor 25 in reverse to reset the pressure plate 21, loosen the positioning bolt 24 and fold the pressure plate 21, and fix it to the connecting strip 20 by magnetic attraction through the magnetic strip 22 on the upper surface of the pressure plate 21.

[0034] The pulverized material is guided from the bottom of the pulverizer casing 2 to the discharge port 4, where it is classified and screened by the sieve plate in the sieve plate seat below the discharge port 4. Material that meets the particle size requirements is discharged through the sieve holes. If the discharge particle size needs to be adjusted, the bolts connecting the sieve plate seat and the discharge port 4 are removed, and the sieve plate with the corresponding aperture is replaced, thus completing a series of operations. Content not described in detail in this specification is prior art known to those skilled in the art.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A straw two-stage crushing device, comprising a base (1) and a crusher housing (2), wherein the crusher housing (2) is installed on the top of the base (1), and a feed inlet (3) and a discharge outlet (4) are respectively installed on the upper and lower sides of the crusher housing (2), and a liner (5) is installed on the inner wall of the crusher housing (2), characterized in that: The crusher housing (2) is rotatably equipped with a first rotor (6) and a second rotor (7), and both the first rotor (6) and the second rotor (7) are equipped with hammer assemblies (8). A cleaning component is provided on the feed inlet (3).

2. The straw two-stage crushing equipment according to claim 1, characterized in that: The base (1) is integrally formed from Q235 carbon steel. The top of the base (1) is provided with a positioning boss corresponding to the installation position of the crusher shell (2). The positioning boss is adapted to and engaged with the positioning groove at the bottom of the crusher shell (2).

3. The straw two-stage crushing equipment according to claim 1, characterized in that: The crusher shell (2) is made of Q235 carbon steel. The crusher shell (2) includes two halves of the shell. The two halves of the shell are detachably connected by bolts. The top of the shell is provided with a flared structure corresponding to the feed inlet (3), and the bottom of the shell is provided with an inclined guide plate corresponding to the discharge outlet (4).

4. The straw two-stage crushing equipment according to claim 1, characterized in that: The discharge port (4) is welded and fixed to the bottom of the crusher shell (2). A screen plate seat is provided below the discharge port (4). The screen plate seat is detachably connected to the discharge port (4) by bolts. Screen plates with different apertures can be installed in the screen plate seat.

5. The straw two-stage crushing equipment according to claim 1, characterized in that: The liner (5) is made of wear-resistant alloy material. The liner (5) is fixedly connected to the inner wall of the crusher shell (2) by countersunk bolts. The surface of the liner (5) is provided with anti-slip ridges. The coverage area of ​​the liner (5) corresponds to the rotation trajectory area of ​​the first rotor (6) and the second rotor (7).

6. The straw two-stage crushing equipment according to claim 1, characterized in that: The upper surface of the base (1) is equipped with a first servo motor (9) and a second servo motor (10). The output shaft of the first servo motor (9) is connected to the first rotor (6) via a first connecting belt (11), and the output shaft of the second servo motor (10) is connected to the second rotor (7) via a second connecting belt (12).

7. The straw two-stage crushing equipment according to claim 6, characterized in that: The first rotor (6) and the second rotor (7) both have a rotation diameter of 800mm. Both the first rotor (6) and the second rotor (7) are equipped with balance wheels. The hammer assembly (8) is made of 65 manganese and is fixedly connected to the first rotor (6) and the second rotor (7) by a positioning pin. The first servo motor (9) and the second servo motor (10) are both Y180L-4, with a rated power of 30kw, a protection level of IP44, a rated frequency of 50Hz, and a rated voltage of 380V.

8. The straw two-stage crushing equipment according to claim 1, characterized in that: The cleaning assembly includes a vibration pump (13), a connecting plate (14), a connecting frame (15), a ball screw (16), a slider (17), a groove (18), a connecting block (19), a connecting strip (20), a pressure plate (21), a magnetic strip (22), a hinge seat (23), a positioning bolt (24), and an adjusting motor (25). The vibration pump (13) is installed on the front surface of the feed inlet (3), the connecting plate (14) is installed on the right side of the feed inlet (3), the connecting frame (15) is installed above the feed inlet (3), the ball screw (16) is installed above the connecting plate (14), and the slider (17) is installed on the ball screw (16). The connecting strip (20) is installed on the left side of the slider (17) through the connecting block (19), and the pressure plate (21) is hinged below the connecting strip (20).

9. A straw two-stage crushing device according to claim 8, characterized in that: An adjusting motor (25) is installed on the lower surface of the connecting plate (14), and the upper part of the adjusting motor (25) is connected to the ball screw (16) through the output shaft. A sliding groove (18) is provided on the connecting frame (15), and the connecting block (19) is slidably connected to the sliding groove (18).

10. A straw two-stage crushing device according to claim 8, characterized in that: The upper surface of the pressure plate (21) is equipped with a magnetic strip (22). When the pressure plate (21) is folded, the magnetic strip (22) is magnetically connected to the connecting strip (20). The upper surface of the pressure plate (21) is equipped with a hinge seat (23). The pressure plate (21) is hinged to the connecting strip (20) through the hinge seat (23). The hinge seat (23) is equipped with a positioning bolt (24). When the pressure plate (21) is unfolded, the positioning bolt (24) is rotated and the positioning bolt (24) engages with the positioning holes on the front and rear sides of the connecting strip (20).

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