A straw crushing device

Abstract

This application discloses a straw crushing device, belonging to the field of crushing technology. The straw crushing device includes a crushing box, a conveyor box fixedly connected to the side wall of the crushing box, a filter frame fixedly connected inside the crushing box, a communication port connected to the conveyor box on the side wall of the crushing box, a fixed frame fixedly connected inside the communication port, a rotating shaft rotatably connected to one side inside the crushing box, and the other end of the rotating shaft rotatably connected to the fixed frame, and multiple cutting blades fixedly connected to the outer wall of the rotating shaft. The rotating shaft and the conveyor shaft are driven to rotate by a motor, and the rotating rods rotate synchronously through a transmission wheel and a toothed belt. After the straw is put into the feeding frame, the crushing wheels of the two rotating rods rotate in opposite directions under the drive of the gears, which can perform preliminary crushing pretreatment on the straw, breaking longer or thicker straws into smaller pieces, avoiding blockages in subsequent conveying and crushing, and laying the foundation for deep crushing.

Description

Technical Field

[0001] This application relates to the field of crushing technology, and more specifically, to a straw crushing device. Background Technology

[0002] Straw crushing devices are specialized equipment used in agricultural production to process straw. They are suitable for various crop straws such as wheat, corn, and rice, and can quickly crush harvested straw into fragments of a specified particle size to meet different needs such as straw return to the field, feed processing, and biomass fuel production. The crushing particle size and processing efficiency can be adjusted according to the usage scenario, reducing the space occupied by straw accumulation and reducing the intensity of manual processing, thus helping to improve the recycling rate of straw resources and adapting to the diversified and efficient needs of straw processing in agricultural production.

[0003] In actual operation, when processing longer or coarser straw, the straw crushing device requires a longer crushing time to reach the specified size due to the lack of an effective preliminary crushing pretreatment step. At the same time, the filter screen is easily clogged by the crushing particles during the crushing process, affecting the smoothness of the particle screening and causing inconvenience to the efficient crushing and subsequent processing of straw. Utility Model Content

[0004] The purpose of this application is to provide a straw crushing device that solves the technical problems mentioned in the background art.

[0005] This application provides a straw crushing device, including a crushing box, a conveying box fixedly connected to the side wall of the crushing box, a filter frame fixedly connected inside the crushing box, a communication port connected to the conveying box on the side wall of the crushing box, a fixed frame fixedly connected inside the communication port, a rotating shaft rotatably connected to one side inside the crushing box, and the other end of the rotating shaft rotatably connected to the fixed frame, a plurality of cutting blade groups fixedly connected to the outer wall of the rotating shaft, a pulverizing scraper fixedly connected to one end of the cutting blade group, and the outer wall of the pulverizing scraper fitting against the inner wall of the filter frame, a conveying shaft rotatably connected inside the conveying box, one end of the conveying shaft extending out of the conveying box, and the other end of the conveying shaft rotatably passing through the fixed frame and fixedly connected to the rotating shaft, and a threaded conveying blade fixedly connected to the outer wall of the conveying shaft.

[0006] Optionally, a feeding frame is fixedly connected to the upper part of the outer wall of the conveyor box, and a pair of rotating rods are rotatably connected inside the feeding frame, with one end of the rotating rods extending out of the feeding frame.

[0007] Optionally, one end of each of the two rotating rods is fixedly connected to a meshing gear, and a crushing wheel is fixedly connected to the outer wall of the rotating rod.

[0008] Optionally, one end of the rotating rod and one end of the conveying shaft are both fixedly connected to a transmission wheel, and a toothed belt meshes between the outer walls of the two transmission wheels.

[0009] Optionally, a motor is fixedly connected to each end face of the crushing box away from the conveying box, and the output end of the motor is fixedly connected to one end of the rotating shaft.

[0010] Optionally, a discharge frame is fixedly connected to the lower part of the outer wall of the crushing box.

[0011] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0012] This application uses a motor to drive the rotating shaft and conveying shaft to rotate, and then uses a transmission wheel and toothed belt to drive the rotating rod to rotate synchronously. After the straw is put into the feeding frame, the crushing wheels of the two rotating rods rotate in opposite directions under the drive of the gears, which can perform preliminary crushing pretreatment on the straw, breaking longer or thicker straw into smaller pieces, avoiding subsequent conveying and crushing blockage, and laying the foundation for deep crushing.

[0013] After pretreatment, the straw falls into the conveyor box. The threaded conveyor blades on the conveyor shaft push the straw steadily towards the crushing box through the threaded pushing action. After being fed in through the connecting port, the cutting blade assembly on the rotating shaft rotates at high speed to deeply crush the straw into fine fragments, resulting in excellent crushing effect. During crushing, the scraper of the cutting blade assembly rotates synchronously, closely adhering to the inner wall of the filter screen frame to scrape against it. This not only prevents the fragments from clogging the filter screen frame mesh, but also breaks up the fragments and pushes fragments of the appropriate particle size through the mesh to ensure smooth screening. At the same time, the crushed straw is of uniform size, which is convenient for later use. The device as a whole takes into account pretreatment, efficient crushing, and anti-clogging, greatly improving the practicality of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the straw crushing device disclosed in the embodiments of this application;

[0015] Figure 2 This is a schematic diagram of the internal structure of the crushing box of the straw crushing device disclosed in the embodiments of this application;

[0016] Figure 3 This is a schematic diagram of the internal structure of the discharge frame and conveyor box of the straw crushing device disclosed in the embodiments of this application;

[0017] The following are the labels in the diagram: 1. Crushing box; 2. Motor; 3. Discharge frame; 4. Conveying box; 5. Feeding frame; 6. Filter screen frame; 7. Connecting port; 8. Fixing frame; 9. Rotating shaft; 10. Cutting blade assembly; 11. Actuating scraper; 12. Conveying shaft; 13. Threaded conveyor blade; 14. Drive wheel; 15. Rotating rod; 16. Crushing wheel; 17. Gear; 18. Toothed belt. Detailed Implementation

[0018] The present application will be further described in detail below with reference to the accompanying drawings.

[0019] Reference Figures 1-3 This application provides a straw crushing device, including a crushing box 1. A conveying box 4 is fixedly connected to the side wall of the crushing box 1. A communication port 7 is provided on the side wall of the crushing box 1, communicating with the conveying box 4. A fixing frame 8 is fixedly connected inside the communication port 7. A rotating shaft 9 is rotatably connected to one side inside the crushing box 1, and the other end of the rotating shaft 9 is rotatably connected to the fixing frame 8. A conveying shaft 12 is rotatably connected inside the conveying box 4. One end of the conveying shaft 12 extends out of the conveying box 4, and the other end of the conveying shaft 12 rotatably passes through the fixing frame 8 and is fixedly connected to the rotating shaft 9. Motors 2 are fixedly connected to the end face of the crushing box 1 away from the conveying box 4, and the output end of the motor 2 is fixedly connected to one end of the rotating shaft 9. A communicating discharge frame 3 is fixedly connected to the lower part of the outer wall of the crushing box 1, and a communicating discharge frame 3 is fixedly connected to the upper part of the outer wall of the conveying box 4. The feeding frame 5 has a pair of rotating rods 15 rotatably connected inside, with one end of each rotating rod 15 extending out of the feeding frame 5. Each end of the two rotating rods 15 is fixedly connected to a meshing gear 17. A crushing wheel 16 is fixedly connected to the outer wall of each rotating rod 15. A transmission wheel 14 is fixedly connected to one end of one rotating rod 15 and one end of the conveying shaft 12. A toothed belt 18 meshes between the outer walls of the two transmission wheels 14. The motor 2 drives the rotating shaft 9 and the conveying shaft 12 to rotate, and the transmission wheel 14 and toothed belt 18 then drive the rotating rods 15 to rotate synchronously. After the straw is fed into the feeding frame 5, the crushing wheels 16 of the two rotating rods 15 rotate in opposite directions under the drive of the gear 17, performing preliminary crushing pretreatment on the straw, breaking longer or coarser straw into smaller pieces, avoiding subsequent conveying and crushing blockages, and laying the foundation for deep crushing.

[0020] A threaded conveyor blade 13 is fixedly connected to the outer wall of the conveyor shaft 12. A filter frame 6 is fixedly connected to the inside of the crushing box 1. Multiple cutting blade assemblies 10 are fixedly connected to the outer wall of the rotating shaft 9. A sliding scraper 11 is fixedly connected to one end of each cutting blade assembly 10, and the outer wall of the sliding scraper 11 is in contact with the inner wall of the filter frame 6. After pretreatment, the straw falls into the conveyor box 4. The threaded conveyor blade 13 of the conveyor shaft 12 pushes the straw steadily towards the crushing box 1 through the threaded pushing action. After being fed in through the connecting port 7, the cutting blade assembly 10 of the rotating shaft 9 rotates at high speed to deeply crush the straw into fine fragments, resulting in good crushing effect. During crushing, the sliding scraper 11 of the cutting blade assembly 10 rotates synchronously, closely contacting the inner wall of the filter frame 6 to scrape. This not only prevents the fragments from clogging the mesh of the filter frame 6, but also disperses the fragments and pushes fragments of the appropriate particle size through the mesh to fall, ensuring smooth screening. At the same time, the crushed straw is of uniform size, which is convenient for later use. The device as a whole takes into account pretreatment, efficient crushing and anti-clogging, which greatly improves the practicality of the device.

[0021] Working principle: Start the motor 2 at the end of the crushing box 1 away from the conveyor box 4. The output end of the motor 2 drives the rotating shaft 9 inside the crushing box 1 to rotate. When the rotating shaft 9 rotates, it synchronously drives the conveyor shaft 12 fixedly connected to it to rotate. The transmission wheel 14 at one end of the conveyor shaft 12 rotates with the conveyor shaft 12. Through the meshing transmission of the toothed belt 18, it drives the transmission wheel 14 at one end of the rotating rod 15 on the other side to rotate synchronously, so that the rotating rod 15 rotates inside the feed frame 5.

[0022] The straw to be crushed is put into the feed frame 5 above the conveyor box 4. The crushing wheel 16 on the outer wall of the rotating rod 15 rotates with the rotating rod 15. At the same time, the gear 17 that meshes with each other at one end of the two rotating rods 15 drives the two rotating rods 15 and the crushing wheel 16 on the outer wall to rotate in opposite directions, so as to perform preliminary crushing and pre-treatment on the input straw, breaking the longer or thicker straw into smaller pieces to avoid blockage during subsequent conveying and crushing. The pre-treated straw falls into the conveyor box 4.

[0023] The conveying shaft 12 inside the conveying box 4 rotates continuously, and the threaded conveying blades 13 on its outer wall rotate with the conveying shaft 12. Through the pushing action of the threaded structure, the pre-treated straw is pushed along the inside of the conveying box 4 towards the crushing box 1 and sent into the crushing box 1 through the connecting port 7. The straw entering the crushing box 1 comes into contact with multiple cutting blade groups 10 on the outer wall of the rotating shaft 9. The high-speed rotating cutting blade groups 10 deeply crush the straw, cutting it into fine fragments, thus completing the crushing operation.

[0024] During the crushing process, the agitator scraper 11 at one end of the cutting blade assembly 10 rotates synchronously with the cutting blade assembly 10. The outer wall of the agitator scraper 11 is in close contact with the inner wall of the filter screen frame 6 inside the crushing box 1. During rotation, it continuously scrapes the inner wall of the filter screen frame 6, preventing the crushed straw fragments from clogging the mesh of the filter screen frame 6, while also breaking up the straw fragments into irregular motion. On the other hand, it pushes the fragments that meet the particle size requirements through the mesh of the filter screen frame 6 and downwards. The straw fragments that pass through the filter screen frame 6 fall into the bottom of the crushing box 1 and are finally discharged through the discharge frame 3 connected to the lower part of the outer wall of the crushing box 1, completing the entire straw crushing and collection process. If continuous operation is required, straw can be continuously fed into the feed frame 5.

[0025] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A straw crushing device, comprising a crushing box (1), characterized in that: A conveyor box (4) is fixedly connected to the side wall of the crushing box (1). A filter frame (6) is fixedly connected inside the crushing box (1). A communication port (7) connected to the conveyor box (4) is opened on the side wall of the crushing box (1). A fixing frame (8) is fixedly connected inside the communication port (7). A rotating shaft (9) is rotatably connected to one side of the inside of the crushing box (1), and the other end of the rotating shaft (9) is rotatably connected to the fixing frame (8). Multiple cutting tools are fixedly connected to the outer wall of the rotating shaft (9). The blade assembly (10) has a fixed connection at one end to a swivel scraper (11), and the outer wall of the swivel scraper (11) is in contact with the inner wall of the filter screen frame (6). The conveying box (4) is rotatably connected to a conveying shaft (12), one end of which extends out of the conveying box (4), and the other end of which rotatably passes through the fixing frame (8) and is fixedly connected to the rotating shaft (9). The outer wall of the conveying shaft (12) is fixedly connected to a threaded conveying blade (13).

2. The straw crushing device according to claim 1, characterized in that: The upper part of the outer wall of the conveying box (4) is fixedly connected to a feed frame (5), and a pair of rotating rods (15) are rotatably connected inside the feed frame (5), with one end of the rotating rod (15) extending out of the feed frame (5).

3. The straw crushing device according to claim 2, characterized in that: One end of each of the two rotating rods (15) is fixedly connected to a meshing gear (17), and a crushing wheel (16) is fixedly connected to the outer wall of the rotating rod (15).

4. The straw crushing device according to claim 2, characterized in that: One end of the rotating rod (15) on one side and one end of the conveying shaft (12) are both fixedly connected to a transmission wheel (14), and a toothed belt (18) meshes between the outer walls of the two transmission wheels (14).

5. The straw crushing device according to claim 1, characterized in that: The end face of the crushing box (1) away from the conveying box (4) is fixedly connected to a motor (2), and the output end of the motor (2) is fixedly connected to one end of the rotating shaft (9).

6. The straw crushing device according to claim 1, characterized in that: The lower part of the outer wall of the crushing box (1) is fixedly connected to the discharge frame (3).

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