A straw crushing device

Abstract

This utility model discloses a straw crushing device, including a processing box. Crushing rollers are symmetrically and rotatably installed inside the processing box. A feed plate is provided on the top of the processing box, and a discharge plate is provided below it. A screw feeding mechanism is also provided inside the processing box, with a discharge pipe on the screw feeding mechanism. A screening component is rotatably installed inside the feed plate. This straw crushing device can solve the technical problem in existing devices where sticky fine leaves clog the filter plate, causing separation failure and a sharp drop in equipment processing efficiency. Through the coordinated design of crushing, screening, cleaning, and feeding, efficient straw crushing and grading are achieved. Simultaneously, the synergistic action of the bidirectional scraper and the rotating screening component thoroughly removes the attached fine leaves, ensuring continuous and stable operation of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of straw crushing technology, specifically a straw crushing device. Background Technology

[0002] Straw is one of the important feed sources for animal husbandry. In order to better utilize straw as feed, crushing devices are usually used in the process of processing straw materials, such as the straw comprehensive utilization and processing crushing device in the existing technology, to crush the straw. The crushed straw is easier to process and utilize.

[0003] Straw surfaces are covered with numerous soft, fine leaves, which become sticky, especially when working in damp field environments. When using existing straw processing and pulverizing equipment, the coarse straw can be easily moved by the lever when it falls onto the filter plate, but the sticky fine leaves adhere tightly to the mesh and surface of the filter plate. The reciprocating movement of the lever can only act on the lumpy coarse straw and cannot effectively peel off the attached fine leaves. As the operation continues, the fine leaves gradually accumulate and clog the filter plate mesh, causing the filter plate's separation function to gradually fail—the fine straw cannot fall smoothly, and the coarse straw may also accumulate due to filter plate blockage, ultimately causing a sharp drop in equipment processing efficiency.

[0004] Therefore, this utility model provides a straw crushing device to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this utility model is to provide a straw crushing device to solve the technical problem mentioned in the background art where sticky fine leaves clog the filter plate, causing the separation function to fail and resulting in a sharp drop in equipment processing efficiency.

[0006] A straw crushing device includes a processing box, in which crushing rollers are symmetrically and rotatably installed, a feeding plate is provided on the top of the processing box, a discharge plate is provided at the bottom of the processing box, a screw feeding mechanism is also provided in the processing box, a discharge pipe is provided on the screw feeding mechanism, and a screening component is rotatably installed in the feeding plate.

[0007] Preferably, the screening component is cylindrical.

[0008] Preferably, a pair of filling blocks are symmetrically arranged inside the processing box, and a funnel-shaped channel is formed between the pair of filling blocks.

[0009] Preferably, the spiral feeding mechanism has a laterally extending inlet.

[0010] Preferably, an isolation cover is provided on the outer wall of the processing box, a motor is provided inside the isolation cover, a first gear is provided at one end of the crushing roller, and the first gear is rotatably mounted on the outer wall of the processing box. A pair of first gears mesh with each other, and the output end of the motor is connected to one of the first gears.

[0011] Preferably, one of the first gears is driven to the screw feeding mechanism via a second pulley set.

[0012] Preferably, a toothed ring is provided at one end of the screening component, and a rotating shaft is rotatably mounted on the outer wall of the processing box. A second gear is provided on the outer wall of the rotating shaft, and the second gear meshes with the toothed ring.

[0013] Preferably, the motor output end and the rotating shaft are driven by a first pulley set.

[0014] Preferably, the second gear is configured as a half-gear structure.

[0015] Preferably, the processing box is provided with an installation plate, the installation plate is provided with a plurality of second scrapers, and the second scrapers abut against the outer wall of the screening component, and the spiral feeding mechanism is provided with a plurality of first scrapers on its outer wall, and the first scrapers abut against the inner wall of the screening component.

[0016] Compared with existing technologies, the beneficial effects of this utility model are as follows: This straw crushing device can be applied to the crushing and processing of straw and crop stems and leaves in the field, and is especially suitable for processing straw with sticky fine leaves attached in humid environments. It solves the core pain point of existing devices where sticky fine leaves clog the filter plate, causing the separation function to fail and the equipment processing efficiency to drop sharply. This straw crushing device achieves efficient crushing and grading of straw through the linkage design of crushing, screening, cleaning and feeding. At the same time, relying on the synergistic action of the bidirectional scraper and the rotating screening component, it completely removes the attached fine leaves, ensuring the continuous and stable operation of the equipment.

[0017] 1. This straw crushing device can efficiently solve the problem of sticky fine leaf clogging. Through the intermittent rotation of the cylindrical screening component and the synergistic effect of the bidirectional scraper, the inner and outer walls of the screen are thoroughly cleaned, effectively removing the attached fine leaves, ensuring the continuous effectiveness of the screening function, and avoiding a decrease in equipment efficiency.

[0018] 2. The straw crushing device can improve operational stability through linkage transmission. A single motor drives the crushing, screening, and feeding components to operate synchronously through gears and pulleys, reducing the number of power sources, lowering the equipment failure rate, and ensuring that the rhythm of each process is matched, thereby improving the overall processing efficiency.

[0019] 3. This straw crushing device can improve resource utilization through classification processing. The hopper channel collects crushed material, and the cylindrical screening component achieves precise separation of coarse and fine straw. Combined with the spiral feeding mechanism and the discharge plate for classified discharge, it is convenient to carry out differentiated utilization of straw of different particle sizes in the future.

[0020] 4. The structural design of this straw crushing device is adapted to humid environments. The motor is protected by an isolation cover, and the rigid contact between the high-density screen and the scraper can handle moist and sticky fine leaves, preventing the fine leaves from solidifying in the mesh and improving the adaptability of the equipment in humid field environments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a straw crushing device according to the present invention; Figure 2 This is a schematic diagram of the internal structure of the processing box of a straw crushing device according to the present invention; Figure 3 This is a schematic diagram of the internal structure of the isolation cover of a straw crushing device according to the present invention; Figure 4 This is a schematic diagram of the gear ring and second gear mating structure of a straw crushing device according to the present invention; Figure 5 This is a schematic diagram of the spiral feeding mechanism of a straw crushing device according to the present invention.

[0022] In the diagram: 1. Processing box; 2. Feed plate; 3. Crushing roller; 4. Discharge plate; 5. Screw feeding mechanism; 6. Filler block; 7. Channel; 8. Motor; 9. First gear; 10. First pulley group; 11. Second pulley group; 12. Shaft; 13. Gear ring; 14. First scraper; 15. Mounting plate; 16. Second scraper; 17. Second gear; 18. Screening component; 19. Discharge pipe; 20. Inlet; 21. Isolation cover. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1-5 The present invention provides the following technical solution: A straw crushing device includes a processing box 1, a feeding plate 2, a crushing roller 3, a screening component 18, a screw feeding mechanism 5, and a power assembly. The crushing roller 3 is symmetrically and rotatably mounted inside the processing box 1. The feeding plate 2 is located on top of the processing box 1, and a discharge plate 4 is located below it. The screw feeding mechanism 5 is also installed inside the processing box 1, and a discharge pipe 19 is provided on the screw feeding mechanism 5. The screening component 18 is rotatably mounted inside the feeding plate 2. The feeding plate 2 guides the straw in, the crushing roller 3 crushes the straw, the screening component 18 grades the straw into coarse and fine parts, the screw feeding mechanism 5 conveys the fine straw, and the power assembly provides the linkage power for all components. The screening component 18 is cylindrical. A pair of filling blocks 6 are symmetrically arranged inside the processing box 1, forming a funnel-shaped channel 7 between the pair of filling blocks 6. The screw feeding mechanism 5 has a laterally extending inlet 20. An isolation cover 21 is provided on the outer wall of the processing box 1. A motor 8 is housed inside the isolation cover 21. A first gear 9 is mounted on one end of the crushing roller 3 and is rotatably mounted on the outer wall of the processing box 1. A pair of first gears 9 mesh with each other, and the output end of the motor 8 is connected to one of the first gears 9. One of the first gears 9 is driven to the screw feeding mechanism 5 via a second pulley set 11. A gear ring 13 is provided on one end of the screening component 18. A rotating shaft 12 is rotatably mounted on the outer wall of the processing box 1. A second gear 17 is mounted on the outer wall of the rotating shaft 12 and meshes with the gear ring 13. The output end of the motor 8 is driven to the rotating shaft 12 via a first pulley set 10. The second gear 17 is configured as a half-gear. The processing box 1 is provided with an installation plate 15, and a plurality of second scrapers 16 are provided on the installation plate 15, and the second scrapers 16 abut against the outer wall of the screening component 18. The spiral feeding mechanism 5 is provided with a plurality of first scrapers 14 on its outer wall, and the first scrapers 14 abut against the inner wall of the screening component 18.

[0025] The processing box 1 is the core supporting structure of the device, forming a closed processing space inside to prevent straw fragments from splashing during the crushing process. A feeding plate 2 is inclinedly installed on its top, and the lower end of the feeding plate 2 extends above the crushing roller 3. The straw is guided by the feeding plate 2 to fall accurately between the two crushing rollers 3, preventing feeding deviation and insufficient crushing. A pair of crushing rollers 3 are symmetrically rotated inside the processing box 1. The outer walls of the two crushing rollers 3 are provided with staggered crushing teeth. Through relative rotation, shearing and squeezing forces are generated to crush the input straw into fragments of different sizes. A discharge plate 4 is provided on one side of the bottom of the processing box 1. The discharge plate 4 extends downward at an incline to the outside of the processing box 1 to discharge the coarse straw after screening. A screw feeding mechanism 5 is installed on the other side of the bottom of the processing box 1. One end of the screw feeding mechanism 5 extends to the outside of the processing box 1 and is connected to a discharge pipe 19. Fine straw is conveyed by the screw feeding mechanism 5 and discharged from the discharge pipe 19, realizing the classification and collection of coarse and fine straw.

[0026] A pair of filling blocks 6 are symmetrically fixed inside the processing box 1. The filling blocks 6 are located below the crushing roller 3, and a funnel-shaped channel 7 is formed between the two filling blocks 6. This funnel structure can collect the crushed straw fragments, prevent the fragments from being dispersed and piled up in the processing box 1, and ensure that all fragments can be guided to the screening component 18 below. The screening component 18 is rotatably installed inside the feed plate 2 and has a cylindrical structure. Its side wall is made of high-density screen mesh, and the mesh size is adapted to the screening requirements of fine straw. Fine straw and sticky fine leaves can pass through the mesh, while coarse straw is blocked on the surface of the screening component 18. The top of the screw feeding mechanism 5 has a horizontally extending inlet 20, which corresponds to the bottom of the screening component 18. Fine straw that passes through the screening component 18 falls directly into the inlet 20 and enters the interior of the screw feeding mechanism 5.

[0027] The power unit provides synchronous power to all moving parts, ensuring coordinated operation of crushing, screening, cleaning and feeding. An isolation cover 21 is fixed on the outer wall of the processing box 1. A motor 8 is installed inside the isolation cover 21. The isolation cover 21 can prevent straw fragments from entering the motor 8 and isolate operating noise, improving the safety of equipment use. One end of the crushing roller 3 extends to the outside of the processing box 1 and is fixed with a first gear 9. The two first gears 9 mesh with each other. The output end of the motor 8 is fixedly connected to one of the first gears 9. When the motor 8 starts, it drives the first gear 9 connected to it to rotate. Through gear meshing, it drives the other first gear 9 to rotate in the opposite direction, thereby causing the two crushing rollers 3 to rotate in opposite directions, realizing the shearing and crushing of straw.

[0028] One of the first gears 9 is driven to the screw feeding mechanism 5 via a second pulley set 11. The second pulley set 11 consists of two pulleys and a transmission belt, which are respectively installed on the shaft of the first gear 9 and the input end of the screw feeding mechanism 5. When the first gear 9 rotates, it drives the screw feeding mechanism 5 to operate synchronously through the belt drive. The spiral blades inside the screw feeding mechanism 5 rotate, conveying the fine straw entering from the inlet 20 towards the discharge pipe 19, thereby realizing the automatic discharge of the fine straw. The output end of the motor 8 is driven to the shaft 12 via a first pulley set 10. The first pulley set 10 also consists of pulleys and a transmission belt. The shaft 12 is rotatably installed on the outer wall of the processing box 1. One end of the shaft extends into the processing box 1 and is fixed with a second gear 17. One end of the screening component 18 is fixed with a gear ring 13. The second gear 17 meshes with the gear ring 13. When the motor 8 starts, it drives the shaft 12 to rotate through the first pulley set 10, which in turn drives the gear ring 13 to rotate the screening component 18.

[0029] The second gear 17 adopts a half-gear structure. This design enables the screening component 18 to rotate intermittently. When the toothed part of the second gear 17 meshes with the gear ring 13, the screening component 18 rotates. When the toothless part is opposite to the gear ring 13, the screening component 18 stops rotating. The intermittent rotation mode allows the surface of the screening component 18 that is in contact with the crushed material to continuously change position, avoiding long-term screening of crushed straw crops in the same area. A mounting plate 15 is fixed inside the processing box 1. Several second scrapers 16 are fixed on the mounting plate 15. The ends of the second scrapers 16 are in close contact with the outer wall of the screening component 18. Several first scrapers 14 are fixed on the outer wall of the screw feeding mechanism 5. The ends of the first scrapers 14 are in close contact with the inner wall of the screening component 18, forming a bidirectional cleaning structure for the screening component 18.

[0030] In the operation of this utility model's straw crushing device, straw is fed into the processing box 1 through the feeding plate 2 and falls between the two crushing rollers 3 to be sheared and crushed. The crushed material is collected through the funnel channel 7 formed by the filling block 6 and falls onto the surface of the screening component 18. At this time, fine straw and sticky fine leaves pass through the mesh of the screening component 18 and enter the screw feeding mechanism 5 through the feed port 20. They are then conveyed by the screw blades to the discharge pipe 19 for discharge. Coarse straw remains on the surface of the screening component 18 and slides towards the discharge plate 4 as the screening component 18 rotates intermittently, and is finally discharged from the processing box 1. During the cycle of rotation and stopping of the screening component 18, when the screening component 18 rotates, its inner wall and outer wall slide relative to the first scraper 14 and the second scraper 16, respectively. The rigid scraping teeth of the scraper can penetrate deep into the mesh of the screen to completely peel off the attached sticky fine leaves and prevent the fine leaves from solidifying and accumulating in the mesh.

[0031] The combination of this bidirectional scraper and intermittent rotating screening component completely solves the problem of sticky fine blades clogging the screen. The first scraper 14 peels off the fine blades on the inner wall of the screening component 18, while the second scraper 16 removes impurities attached to the outer wall, ensuring the screen's permeability. The intermittent rotation driven by the semi-gear allows each area of ​​the screening component 18 to fully contact the scraper, while also ensuring that the crushed straw can be fully separated by the screening component 18. This also reduces the continuous friction between the scraper and the screening component 18, extending the screen's service life. In addition, all moving parts are driven by the same motor 8, achieving synchronous operation through a combination of gears and pulleys. This eliminates the need for multiple additional power sources, simplifying the equipment structure and reducing energy consumption and maintenance costs.

[0032] This utility model's straw crushing device can be applied to the crushing and processing of straw and crop stems and leaves in the field, and is especially suitable for processing straw with sticky fine leaves attached in humid environments. It solves the core pain point of existing devices where sticky fine leaves clog the filter plates, causing separation failure and reduced equipment efficiency. This straw crushing device achieves efficient straw crushing and grading through a linkage design of crushing, screening, cleaning and feeding. At the same time, relying on the synergistic action of the bidirectional scraper and the rotating screening component, it completely removes the attached fine leaves, ensuring continuous and stable operation of the equipment.

Claims

1. A straw crushing device, comprising a processing box (1), wherein crushing rollers (3) are symmetrically and rotatably installed inside the processing box (1), a feeding plate (2) is provided on the processing box (1), and a discharge plate (4) is provided below the processing box (1), characterized in that, The processing box (1) is also equipped with a screw feeding mechanism (5), and the screw feeding mechanism (5) is equipped with a discharge pipe (19). A screening component (18) is rotatably installed in the feed plate (2).

2. The straw crushing device according to claim 1, characterized in that, The screening component (18) is cylindrical.

3. The straw crushing device according to claim 1, characterized in that, A pair of filling blocks (6) are symmetrically arranged inside the processing box (1), and a funnel-shaped channel (7) is formed between the pair of filling blocks (6).

4. The straw crushing device according to claim 1, characterized in that, The spiral feeding mechanism (5) has a laterally extending inlet (20).

5. A straw crushing device according to claim 1, characterized in that, An isolation cover (21) is provided on the outer wall of the processing box (1). A motor (8) is provided inside the isolation cover (21). A first gear (9) is provided at one end of the crushing roller (3). The first gear (9) is rotatably installed on the outer wall of the processing box (1). A pair of first gears (9) mesh with each other. The output end of the motor (8) is connected to one of the first gears (9).

6. A straw crushing device according to claim 5, characterized in that, One of the first gears (9) is driven to the screw feeding mechanism (5) via a second pulley set (11).

7. A straw crushing device according to claim 6, characterized in that, The screening component (18) is provided with a toothed ring (13) at one end. A rotating shaft (12) is rotatably installed on the outer wall of the processing box (1). A second gear (17) is provided on the outer wall of the rotating shaft (12). The second gear (17) meshes with the toothed ring (13).

8. A straw crushing device according to claim 7, characterized in that, The output end of the motor (8) is driven to the shaft (12) via a first pulley group (10).

9. A straw crushing device according to claim 7, characterized in that, The second gear (17) is configured as a half gear.

10. A straw crushing device according to claim 1, characterized in that, The processing box (1) is provided with an installation plate (15), and a number of second scrapers (16) are provided on the installation plate (15). The second scrapers (16) abut against the outer wall of the screening component (18). The spiral feeding mechanism (5) is provided with a number of first scrapers (14) on its outer wall. The first scrapers (14) abut against the inner wall of the screening component (18).

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