A pretreatment system for producing nanocrystalline cellulose from crop straw

Abstract

The present application relates to the technical field of straw processing, and discloses a pretreatment system for producing nano microcrystalline cellulose from crop straw, which comprises a treatment box body, a crushing cavity, a cleaning cavity and a collecting cavity which are arranged on the treatment box body, two crushing rollers are arranged on the inside of the crushing cavity, a bearing plate is arranged below the crushing rollers, a discharge chute one is arranged on the inner wall between the crushing cavity and the cleaning cavity above the bearing plate, a discharge chute two is arranged on the inner wall between the cleaning cavity and the collecting cavity, and a receiving box body is arranged below the discharge chute two and slides in the collecting cavity. The present application can quickly crush and clean the crop straw which needs to be processed, can avoid the crop straw from winding on the stirring assembly of the equipment, and can promote the crop straw in the equipment to quickly enter the inside of each treatment cavity, so that the processing efficiency is high and the use is convenient.

Description

Technical Field

[0001] This invention relates to the field of straw treatment technology, and in particular to a pretreatment system for producing nanocrystalline cellulose from crop straw. Background Technology

[0002] Nanocrystalline cellulose is a cellulose material extracted from straw. It has high strength and toughness and can be used to prepare nanocrystalline cellulose composites, nanocrystalline cellulose films and nanocrystalline cellulose paper, etc., with broad application prospects. Before extracting nanocrystalline cellulose from crop straw, it is necessary to use processing equipment to clean the crop straw and remove impurities and contaminants.

[0003] Most existing processing equipment is equipped with a stirring component, which agitates the crop straw inside the equipment to quickly remove impurities and contaminants. While this cleaning method can remove impurities and contaminants attached to the crop straw, during operation, the crop straw inside the equipment is very easy to get tangled on the stirring component, causing the stirring component to stop working. Therefore, users need to clean the crop straw from the stirring component regularly. This process is not only time-consuming and labor-intensive, but also greatly reduces the processing efficiency of crop straw. To address this, we propose a pretreatment system for the production of nanocrystalline cellulose from crop straw. Summary of the Invention

[0004] To address the technical problem that crop straw easily gets tangled in the mixing components inside the processing equipment during the washing process, this invention provides a pretreatment system for producing nanocrystalline cellulose from crop straw.

[0005] This invention is achieved using the following technical solution: a pretreatment system for producing nanocrystalline cellulose from crop straw, comprising a treatment box and a crushing chamber, a washing chamber, and a collecting chamber formed on the treatment box. Crushing rollers are provided on both sides inside the crushing chamber, and a support plate is provided below the crushing rollers. A discharge trough one is provided above the support plate, formed on the inner wall between the crushing chamber and the washing chamber. A second discharge trough is provided on the inner wall between the washing chamber and the collecting chamber. A receiving box sliding inside the collecting chamber is provided below the second discharge trough. A conveying assembly for conveying straw is also provided inside the washing chamber. A water pipe communicating with the washing chamber is installed on the treatment box, and a... A drain pipe connected to the washing chamber is provided. A rotating crushing roller crushes the crop straw inside the chamber. The crushed straw falls onto a support plate and then enters the washing chamber through discharge chute one. Sufficient washing water is injected into the washing chamber through a water supply pipe. This water washes the crushed straw. The cleaned straw is then transported to discharge chute two via a conveying assembly. From there, it is transported to a receiving box for final collection.

[0006] As a further improvement to the above solution, a drive shaft is fixedly installed inside the crushing roller. One end of the drive shaft is rotatably connected to the inner wall of the processing box, and the other end of the drive shaft extends to the outside of the processing box and is connected to a motor fixed to the outer wall of the processing box. The processing box has a rotating hole corresponding to the drive shaft. The drive shaft rotates inside the adjacent rotating hole. By running the motor, the drive shaft can be driven to rotate, thereby driving the crushing roller to rotate. The drive shaft can rotate flexibly through the rotating hole.

[0007] As a further improvement to the above solution, a butterfly valve is installed on the drain pipe, and the water supply pipe located inside the cleaning chamber is located between the discharge trough and the drain pipe. By opening the butterfly valve, the drain pipe can discharge the water inside the cleaning chamber.

[0008] As a further improvement to the above solution, the conveying assembly includes a conveying plate that slides inside the cleaning chamber. A pressure plate is provided above the conveying plate. Sliding holes are provided at both ends of the pressure plate. A lead screw, rotatably connected to the inner wall of the cleaning chamber, slides through the sliding holes. A threaded sleeve fitted on the outer wall of the lead screw is threaded onto the conveying plate. A transition hole is provided in the middle of the pressure plate. A drive sleeve is rotatably connected inside the transition hole. An annular groove is provided on the inner wall of the transition hole. Multiple stabilizing blocks rotating inside the annular groove are fixed to the outer wall of the drive sleeve. A threaded sleeve fixed to the inner wall of the cleaning chamber is threaded through the inner wall of the drive sleeve. The screw on the inner wall of the cavity has multiple actuating plates fixed to the outer wall of the drive sleeve outside the adapter hole. These plates contact the bottom of the pressure plate and rotate inside the cleaning cavity. A connecting hole is opened in the middle of the bearing plate. A connecting column is rotatably inserted through the connecting hole. One end of the connecting column is fixed with a material-pushing plate that slides on the top side of the bearing plate. The other end of the connecting column is fixed with a stop block. A drive plate is slidably sleeved on the outside of the connecting column. A worm gear is rotatably connected to the inner wall of the crushing cavity between the bearing plate and the drive plate. A worm wheel is fixedly sleeved on the outer wall of the connecting column and meshes with the worm gear. The outer walls of both ends of the worm gear are fixed... A gear is fixedly fitted onto the conveyor plate. One side of the gear meshes with a rack plate fixed to the drive plate. A sliding groove is formed at the end of the rack plate away from the drive plate. A linkage block fixed to a bearing plate is slidably inserted inside the sliding groove. Multiple push springs, the other ends of which are fixed to the inner wall of the sliding groove, are fixed to the end of the linkage block inside the sliding groove. A second worm gear is located below the conveyor plate. One end of the second worm gear is rotatably connected to the inner wall of the cleaning chamber, and the other end of the second worm gear extends to the outside of the processing box and is connected to a second motor. A worm wheel that meshes with the second worm gear is fixedly fitted onto the outer wall of the lead screw. Second, multiple agitators rotating inside the cleaning chamber are fixed to the outer wall of the worm gear II located inside the cleaning chamber. A transfer shaft rotatably connected to the inner wall of the crushing chamber is provided below the drive plate. Transmission wheels are fixedly sleeved on the outer walls of the worm gear II and the transfer shaft located outside the processing box. A transmission belt is connected to the outside of the transmission wheels. A cam that cooperates with the drive plate is fixedly sleeved on the outer wall of the transfer shaft. The cam rotates inside the crushing chamber. Through the operation of the conveying component, the crop straw inside the equipment can be quickly pushed into the interior of each processing chamber, which can remove excess moisture from the crop straw.

[0009] As a further improvement to the above solution, a support plate is fixed to the bottom of the processing box, and the second motor is fixed on the support plate. The second motor can be fixed by the support plate.

[0010] As a further improvement to the above solution, the processing box is provided with a second rotating hole, and the inner wall of the second rotating hole is provided with a sealing ring. The second worm rotates inside the second rotating hole, and the bottom of the processing box is provided with a sliding groove. The transmission belt slides inside the sliding groove. The second worm can rotate flexibly through the second rotating hole, and the transmission belt can slide flexibly through the sliding groove.

[0011] As a further improvement to the above solution, the conveyor plate has a receiving hole in the middle corresponding to the screw. The inner wall of the end of the receiving hole is hinged with a sealing block for closing the receiving hole. On the side of the sealing block away from the screw, there are a plurality of support springs whose other ends are fixed to the inner wall of the receiving hole. When the screw contacts the conveyor plate, it will enter the interior of the receiving hole, push the sealing block, and open the receiving hole. At this time, the screw can enter the interior of the receiving hole, avoiding the screw pressing against the conveyor plate, which would prevent the conveyor plate from moving.

[0012] As a further improvement to the above solution, the discharge trough is located above the pressure plate, and a return spring is sleeved on the outside of the lead screw located above the pressure plate. The return spring can push the pressure plate to reset.

[0013] As a further improvement to the above solution, a feeding trough communicating with the crushing chamber is provided on the outer side of the processing box. A sealing plate for closing the feeding trough is hinged to the inner wall of the crushing chamber. Multiple support springs are fixed on the side of the sealing plate away from the feeding trough, and the other end of the springs is fixed to the inner wall of the crushing chamber. Pushing the sealing plate will cause the sealing plate to deflect. When the sealing plate opens the feeding trough, crop straw can be fed into the interior of the crushing chamber through the feeding trough.

[0014] As a further improvement to the above solution, the outer side of the processing box is hinged with movable doors one, two, and three. The outer sides of movable doors one, two, and three are equipped with rubber rings. Movable door one is connected to the crushing chamber, movable door two is connected to the washing chamber, and movable door three is connected to the collecting chamber. By opening movable doors one, two, and three, the internal components of the processing box can be inspected and maintained, and the receiving box containing crop straw can be removed from the processing box.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. This invention can quickly crush and clean crop straw that needs to be processed. When cleaning crop straw, it can prevent crop straw from getting tangled on the mixing components of the equipment, improve the equipment's endurance, and has high working performance. It can also promote the rapid entry of crop straw into the interior of each processing chamber, thereby improving the processing efficiency of crop straw.

[0017] 2. This invention can prevent crop straw fragments from splashing out of the equipment during crushing, thus improving the safety performance of the equipment. It can also remove excess moisture from the crop straw, making it convenient for users to use the washed crop straw. Attached Figure Description

[0018] Figure 1 A schematic diagram of a pretreatment system for producing nanocrystalline cellulose from crop straw;

[0019] Figure 2 A schematic diagram of a toothed plate in a pretreatment system for producing nanocrystalline cellulose from crop straw;

[0020] Figure 3 for Figure 1 Enlarged structural diagram at point A;

[0021] Figure 4 for Figure 1 Enlarged structural diagram at point B;

[0022] Figure 5 A schematic diagram of the pressure plate in a pretreatment system for producing nanocrystalline cellulose from crop straw;

[0023] Figure 6 A front view of a pretreatment system for producing nanocrystalline cellulose from crop straw.

[0024] Explanation of key symbols:

[0025] 1. Processing box; 2. Feeding trough; 3. Crushing roller; 4. Bearing plate; 5. Cleaning chamber; 6. Collection chamber; 7. Discharge trough II; 8. Receiving box; 9. Sealing plate; 10. Linkage column; 11. Feeding plate; 12. Drive plate; 13. Worm gear I; 14. Worm I; 15. Rack plate; 16. Gear; 17. Pressure plate; 18. Adapter hole; 19. Drive sleeve; 20. Screw; 21. Actuating plate; 22. Conveying plate; 23. Lead screw; 24. Worm II; 25. Stirring rod; 26. Crushing chamber; 27. Support plate; 28. Receiving hole; 29. ​​Sealing block; 30. Support spring I; 31. Movable door I; 32. Movable door II; 33. Movable door III. Detailed Implementation

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] Example 1:

[0028] Combination Figure 1This embodiment of a pretreatment system for producing nanocrystalline cellulose from crop straw includes a treatment box 1 and a crushing chamber 26, a washing chamber 5, and a collecting chamber 6 formed on the treatment box 1. Crushing rollers 3 are provided on both sides inside the crushing chamber 26. A support plate 4 is provided below the crushing rollers 3. A discharge trough 1 is provided above the support plate 4 and is formed on the inner wall between the crushing chamber 26 and the washing chamber 5. A discharge trough 2 7 is provided on the inner wall between the washing chamber 5 and the collecting chamber 6. A receiving box 8 is provided below the discharge trough 2 7 and slides inside the collecting chamber 6. A conveying assembly for conveying straw is also provided inside the washing chamber 5. A water supply pipe communicating with the washing chamber 5 is installed on the treatment box 1. A drain pipe communicating with the washing chamber 5 is also installed at the bottom of the treatment box 1.

[0029] The implementation principle of the pretreatment system for producing nanocrystalline cellulose from crop straw in this embodiment is as follows: the rotating crushing roller 3 crushes the crop straw inside the crushing chamber 26. The crushed crop straw falls onto the support plate 4 and enters the cleaning chamber 5 through the discharge chute 1. At this time, the crushed crop straw inside the cleaning chamber 5 is cleaned by the water inside the cleaning chamber 5. Through the operation of the conveying component, the cleaned crop straw inside the cleaning chamber 5 is conveyed to the discharge chute 2 7. The cleaned crop straw is then conveyed to the receiving box 8 through the discharge chute 2 7. The receiving box 8 receives the processed crop straw.

[0030] A drive shaft is fixedly installed inside the crushing roller 3. One end of the drive shaft is rotatably connected to the inner wall of the processing box 1, and the other end of the drive shaft passes through to the outside of the processing box 1 and is connected to a motor fixed to the outer wall of the processing box 1. The processing box 1 has a rotating hole corresponding to the drive shaft. The drive shaft rotates inside the adjacent rotating hole. By running the motor, the drive shaft can be driven to rotate, which in turn drives the crushing roller 3 to rotate. The drive shaft can rotate flexibly through the rotating hole.

[0031] A butterfly valve is installed on the drain pipe. The water supply pipe inside the cleaning chamber 5 is located between the discharge trough and the drain pipe. By opening the butterfly valve, the drain pipe can discharge the water inside the cleaning chamber 5.

[0032] Example 2:

[0033] Combination Figure 2 , Figure 3 , Figure 4 and Figure 5This embodiment, based on Embodiment 1, further improves upon the following: the conveying assembly includes a conveying plate 22 that slides inside the cleaning chamber 5. A pressure plate 17 is provided above the conveying plate 22. Sliding holes are provided at both ends of the pressure plate 17. A lead screw 23, rotatably connected to the inner wall of the cleaning chamber 5, slides through the sliding holes. A threaded sleeve embedded in the conveying plate 22 is threaded onto the outer wall of the lead screw 23. A transition hole 18 is provided in the middle of the pressure plate 17. A drive sleeve 19 is rotatably connected inside the transition hole 18. An annular groove is provided on the inner wall of the transition hole 18. Multiple stabilizing blocks rotating inside the annular groove are fixed on the outer wall of the drive sleeve 19. A lead screw 20, fixed to the inner wall of the cleaning chamber 5, passes through the internal thread of the drive sleeve 19. The drive sleeve 19 located outside the transition hole 18 has an outer... Multiple actuating plates 21 are fixed to the wall, contacting the bottom of the pressure plate 17 and rotating inside the cleaning chamber 5. A connecting hole is opened in the middle of the bearing plate 4, and a connecting column 10 is rotatably inserted inside the connecting hole. A material-pushing plate 11 that slides on the top side of the bearing plate 4 is fixed to one end of the connecting column 10, and a stop block is fixed to the other end of the connecting column 10. A drive plate 12 is slidably sleeved on the outside of the connecting column 10. A worm gear 14 is rotatably connected to the inner wall of the crushing chamber 26 between the bearing plate 4 and the drive plate 12. A worm wheel 13 that meshes with the worm gear 14 is fixedly sleeved on the outer wall of the connecting column 10. Gears 16 are fixedly sleeved on the outer walls of both ends of the worm gear 14. A rack plate 15 fixed on the drive plate 12 meshes with one side of the gear 16. The end of the rack plate 15 away from the drive plate 12 is open. A sliding groove is provided, and a linkage block fixed to the bearing plate 4 is slidably inserted inside the sliding groove. Multiple push springs, the other ends of which are fixed to the inner wall of the sliding groove, are fixed to the end of the linkage block located inside the sliding groove. A second worm gear 24 is provided below the conveyor plate 22. One end of the second worm gear 24 is rotatably connected to the inner wall of the cleaning chamber 5, and the other end of the second worm gear 24 extends to the outside of the processing box 1 and is connected to a second motor, which is a forward and reverse stepper motor. A worm wheel 2 that meshes with the second worm gear 24 is fixedly sleeved on the outer wall of the lead screw 23. Multiple agitator rods 25 rotating inside the cleaning chamber 5 are fixed to the outer wall of the second worm gear 24 located inside the cleaning chamber 5. A transfer shaft rotatably connected to the inner wall of the crushing chamber 26 is provided below the drive plate 12. The worm gear located outside the processing box 1... Both the outer wall of worm gear 24 and the outer wall of the adapter shaft are fixedly fitted with transmission wheels. A transmission belt is fitted to the external transmission of these transmission wheels. A cam that mates with drive plate 12 is fixedly fitted to the outer wall of the adapter shaft. The cam rotates inside the crushing chamber 26. When the crop straw enters the washing chamber 5, the operation of motor 2 drives worm gear 24 to rotate in both directions, which in turn drives agitator 25 to rotate. The rotating agitator 25 then washes the crop straw with the water inside the washing chamber 5, removing impurities and contaminants. The conveyor plate 22 prevents the crop straw from becoming entangled on the agitator 25. After the crop straw is washed, the rotation of worm gear 24 drives worm wheel 2 to rotate.The screw 23 rotates, and through the threaded engagement between the rotating screw 23 and the screw sleeve, the screw sleeve and the conveyor plate 22 are vertically displaced. When the straw on the conveyor plate 2 comes into contact with the pressure plate 17, the pressure plate 17 will compress the straw on the conveyor plate 2 to expel moisture. At the same time, the conveyor plate 2, the straw on the conveyor plate 2, and the pressure plate 17 will move vertically upward. When the straw on the conveyor plate 2 aligns with the discharge chute 7, the straw on the conveyor plate 2 will be discharged by the discharge chute 7. When the pressure plate 17 moves vertically upward, it will drive the drive sleeve 19 to move vertically upward. At this time, the drive sleeve 19 will be driven by the screw 20 to rotate. The rotating drive sleeve 19 will drive the agitator plate 21 to rotate. The rotating agitator plate 21 will agitate the crop straw on the conveyor plate 22, causing the conveyor plate to move. The crop straw on conveyor plate 22 enters the discharge trough 7, preventing it from remaining on the conveyor plate 22. When worm gear 24 rotates, the transmission wheel and belt drive the adapter shaft to rotate, which in turn drives the cam. The rotating cam intermittently pushes the drive plate 12, causing the rack plate 15 to shift. The shifted rack plate 15 then drives the gear 16 to rotate, which in turn drives worm gear 14 to rotate, which in turn drives worm wheel 13 to rotate, which in turn drives the connecting column 10 to rotate, causing the feeding plate 11 to rotate. The rotating feeding plate 11 then pushes the crop straw on the bearing plate 4, causing it to enter the discharge trough 7, preventing it from remaining on the bearing plate 4 and increasing the discharge rate.

[0034] A support plate 27 is fixed to the bottom of the processing box 1, and the second motor is fixed on the support plate 27. The second motor can be fixed through the support plate 27.

[0035] The processing box 1 has a second rotating hole, and the inner wall of the second rotating hole is equipped with a sealing ring. The second worm gear 24 rotates inside the second rotating hole. The bottom of the processing box 1 has a sliding groove, and the transmission belt slides inside the sliding groove. The second worm gear 24 can rotate flexibly through the second rotating hole, and the transmission belt can slide flexibly through the sliding groove.

[0036] The conveyor plate 22 has a receiving hole 28 in the middle corresponding to the screw 20. The inner wall of the end of the receiving hole 28 is hinged with a sealing block 29 for closing the receiving hole 28. On the side of the sealing block 29 away from the screw 20, there are a number of support springs 30 with the other end fixed to the inner wall of the receiving hole 28. When the screw 20 contacts the conveyor plate 22, it will enter the interior of the receiving hole 28, push the sealing block 29, and open the receiving hole 28. At this time, the screw 20 can enter the interior of the receiving hole 28, preventing the screw 20 from pressing against the conveyor plate 22 and causing the conveyor plate 22 to be unable to move.

[0037] The discharge chute 2 7 is located above the pressure plate 17. A return spring is sleeved on the outside of the lead screw 23 located above the pressure plate 17. The return spring can push the pressure plate 17 to reset.

[0038] The outer side of the processing box 1 is provided with a feeding trough 2 that communicates with the crushing chamber 26. The inner wall of the crushing chamber 26 is hinged with a sealing plate 9 for closing the feeding trough 2. On the side of the sealing plate 9 away from the feeding trough 2, there are a number of support springs whose other ends are fixed to the inner wall of the crushing chamber 26. When it is necessary to feed crop straw into the crushing chamber 26, the sealing plate 9 can be pushed to deflect the sealing plate 9. After the sealing plate 9 opens the feeding trough 2, the crop straw can be fed into the crushing chamber 26 through the feeding trough 2.

[0039] Example 3:

[0040] Combination Figure 6 Based on Embodiment 1, this embodiment is further improved in that: the outer side of the processing box 1 is hinged with movable door 1 31, movable door 2 32 and movable door 33. The outer side of movable door 1 31, movable door 2 32 and movable door 33 are provided with rubber rings. Movable door 1 31 is connected to the crushing chamber 26, movable door 2 32 is connected to the washing chamber 5 and movable door 33 is connected to the collecting chamber 6. By opening movable door 1 31, movable door 2 32 and movable door 33, the internal components of the processing box 1 can be inspected and maintained, and the receiving box 8 loaded with crop straw can be taken out of the processing box 1.

[0041] Working principle: Pushing the sealing plate 9 causes it to deflect, opening the feeding trough 2. Crop straw can then be fed into the crushing chamber 26 through the feeding trough 2. The motor drives the drive shaft to rotate, which in turn rotates the crushing roller 3. The rotating crushing roller 3 crushes the crop straw entering the crushing chamber 26. The crushed crop straw falls onto the carrying plate 4, and then through the discharge trough 1 into the washing chamber 5. The straw in the washing chamber 5 falls onto the conveying plate 22. Sufficient washing water is injected into the washing chamber 5 through the water pipe. The water in the washing chamber 5 further cleans the crushed straw. The crop straw is being washed. Simultaneously, the operation of motor two drives worm gear two 24 to rotate in both directions, causing the agitator 25 to rotate. The rotating agitator 25 then washes the crop straw with the water inside the washing chamber 5, removing impurities and contaminants. The conveyor plate 22 prevents the crop straw inside the washing chamber 5 from becoming entangled on the agitator 25. When worm gear two 24 rotates, the transmission wheel and belt drive the adapter shaft to rotate, causing the cam to rotate. The rotating cam intermittently pushes the drive plate 12, causing the rack plate 15 to shift. The shifted rack plate 15 then drives the gear 16 to rotate, further rotating the worm gear. Rotating rod 14 drives worm gear 13 to rotate, which in turn drives connecting column 10 to rotate, and then drives material feeding plate 11 to rotate. The rotating material feeding plate 11 then pushes the crop straw on the bearing plate 4, causing it to enter the discharge trough, preventing it from remaining on the bearing plate 4 and increasing the straw discharge rate. After the crop straw is washed, rotating worm gear 24 drives worm gear 2 to rotate, which in turn drives screw 23 to rotate. Through the threaded engagement of screw 23 and screw sleeve, the screw sleeve and conveyor plate 22 are vertically displaced. When the straw on conveyor plate 2 comes into contact with pressure plate 17, pressure plate 17 will compress the straw on conveyor plate 2. As moisture is drained, the conveyor plate 2, the straw on the conveyor plate 2, and the pressure plate 17 will move vertically upward. When the straw on the conveyor plate 2 aligns with the discharge chute 7, the straw on the conveyor plate 2 will be discharged by the discharge chute 7. When the pressure plate 17 moves vertically upward, it will drive the drive sleeve 19 to move vertically upward. At this time, the drive sleeve 19 will be driven by the screw 20 to rotate. The rotating drive sleeve 19 will drive the actuating plate 21 to rotate. The rotating actuating plate 21 will actuate the crop straw on the conveyor plate 22, causing the crop straw on the conveyor plate 22 to enter the discharge chute 7, thus preventing the crop straw on the conveyor plate 22 from remaining on the conveyor plate 22.

[0042] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A pretreatment system for producing nanocrystalline cellulose from crop straw, comprising a treatment chamber and a crushing chamber, a washing chamber, and a collecting chamber formed on the treatment chamber, characterized in that, The crushing chamber has crushing rollers on both sides, a support plate below the crushing rollers, a discharge trough 1 on the inner wall between the crushing chamber and the washing chamber above the support plate, a discharge trough 2 on the inner wall between the washing chamber and the collecting chamber, a receiving box sliding inside the collecting chamber below the discharge trough 2, a conveying assembly for conveying straw inside the washing chamber, a water supply pipe connected to the washing chamber installed on the processing box, and a drain pipe connected to the washing chamber installed at the bottom of the processing box. The conveying assembly includes a conveying plate that slides inside the cleaning chamber. A pressure plate is provided above the conveying plate. Sliding holes are formed at both ends of the pressure plate. A lead screw, rotatably connected to the inner wall of the cleaning chamber, slides through the sliding holes. A threaded sleeve fitted onto the conveying plate is threaded onto the outer wall of the lead screw. A transition hole is formed in the middle of the pressure plate. A drive sleeve is rotatably connected inside the transition hole. An annular groove is formed on the inner wall of the transition hole. Multiple stabilizing blocks rotating inside the annular groove are fixed to the outer wall of the drive sleeve. A fixed... A screw is mounted on the inner wall of the cleaning chamber. Multiple actuating plates, which contact the bottom of the pressure plate and rotate inside the cleaning chamber, are fixed to the outer wall of the drive sleeve outside the adapter hole. A connecting hole is opened in the middle of the bearing plate, and a connecting column rotatably passes through the connecting hole. One end of the connecting column is fixed with a material-pushing plate that slides on the top side of the bearing plate, and the other end is fixed with a stop block. A drive plate is slidably sleeved on the outside of the connecting column. A worm gear is rotatably connected to the inner wall of the crushing chamber between the bearing plate and the drive plate. A connecting column is fixedly sleeved with a worm gear... A first worm gear is engaged. Gears are fixedly sleeved on the outer walls of both ends of the first worm gear. One side of the gear meshes with a rack plate fixed to a drive plate. A sliding groove is formed at the end of the rack plate away from the drive plate. A linkage block fixed to a bearing plate is slidably inserted inside the sliding groove. Multiple push springs, with their other ends fixed to the inner wall of the sliding groove, are fixed to the end of the linkage block located inside the sliding groove. A second worm gear is located below the conveyor plate. One end of the second worm gear is rotatably connected to the inner wall of the cleaning chamber, and the other end of the second worm gear extends through the processing box. The external part of the device is connected to a motor. A worm gear two is fixedly sleeved on the outer wall of the lead screw and meshes with the worm gear two. Multiple stirring rods rotating inside the cleaning chamber are fixedly mounted on the outer wall of the worm gear two located inside the cleaning chamber. A transfer shaft is rotatably connected to the inner wall of the crushing chamber below the drive plate. Transmission wheels are fixedly sleeved on the outer walls of the worm gear two and the transfer shaft located outside the processing box. A transmission belt is connected to the external part of the transmission wheel. A cam that meshes with the drive plate is fixedly sleeved on the outer wall of the transfer shaft. The cam rotates inside the crushing chamber.

2. The pretreatment system for producing nanocrystalline cellulose from crop straw as described in claim 1, characterized in that, A drive shaft is fixedly installed inside the crushing roller. One end of the drive shaft is rotatably connected to the inner wall of the processing box, and the other end of the drive shaft extends to the outside of the processing box and is connected to a motor fixed to the outer wall of the processing box. The processing box has a rotating hole corresponding to the drive shaft, and the drive shaft rotates inside the adjacent rotating hole.

3. The pretreatment system for producing nanocrystalline cellulose from crop straw as described in claim 1, characterized in that, A butterfly valve is installed on the drain pipe, and the water supply pipe located inside the cleaning chamber is located between the discharge trough and the drain pipe.

4. The pretreatment system for producing nanocrystalline cellulose from crop straw as described in claim 1, characterized in that, The bottom of the processing box is fixed with a support plate, and the second motor is fixed on the support plate.

5. The pretreatment system for producing nanocrystalline cellulose from crop straw as described in claim 1, characterized in that, The processing box has a second rotating hole, and the inner wall of the second rotating hole is provided with a sealing ring. The second worm rotates inside the second rotating hole. The bottom of the processing box has a sliding groove, and the transmission belt slides inside the sliding groove.

6. The pretreatment system for producing nanocrystalline cellulose from crop straw as described in claim 1, characterized in that, The conveying plate has a receiving hole in the middle corresponding to the screw. The inner wall of the end of the receiving hole is hinged with a sealing block for closing the receiving hole. On the side of the sealing block away from the screw, there are a plurality of support springs whose other ends are fixed to the inner wall of the receiving hole.

7. The pretreatment system for producing nanocrystalline cellulose from crop straw as described in claim 1, characterized in that, The discharge chute 2 is located above the pressure plate, and a return spring is sleeved on the outside of the lead screw located above the pressure plate.

8. The pretreatment system for producing nanocrystalline cellulose from crop straw as described in claim 1, characterized in that, The outer side of the processing box is provided with a feeding trough that communicates with the crushing chamber. The inner wall of the crushing chamber is hinged with a sealing plate for closing the feeding trough. On the side of the sealing plate away from the feeding trough, there are a number of support springs whose other ends are fixed to the inner wall of the crushing chamber.

9. The pretreatment system for producing nanocrystalline cellulose from crop straw as described in claim 1, characterized in that, The outer side of the processing box is hinged with movable door one, movable door two and movable door three. The outer side of movable door one, movable door two and movable door three is provided with rubber ring. Movable door one is connected to the crushing chamber, movable door two is connected to the washing chamber and movable door three is connected to the collection chamber.

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