Vertical self-suction straw smashing device
By designing a vertical self-priming straw crushing device, and using self-priming crushing components and direct crushing components for secondary crushing, the problem of poor crushing quality of existing single-axis crushers is solved, and more efficient straw crushing and faster corrosion speed are achieved.
Patent Information
- Application Number
- CN202421745933.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The existing straw crushing and field return machines are single-axis crushing, with poor crushing quality, which affects the seed germination and straw decomposition speed, resulting in urgent need of optimized design of straw crusher.
A vertical self-priming straw crushing device is designed, including a bracket, a crushing roller and a crushing knife. The self-priming crushing parts and direct crushing parts of the crushing roller are used to perform secondary crushing, and the efficient introduction, crushing and export of straw is achieved by using wind power and deflectors.
The precision of straw crushing is improved, the straw decomposition time is shortened, and the operation quality of straw crushing and returning the field machine is improved.
Smart Images
Figure CN222655808U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of agricultural machinery, in particular to a vertical self-priming straw crushing device. Background Art
[0002] With the development and progress of society, the rural population has gradually moved to cities, resulting in a large reduction in the rural population, and a significant reduction in the utilization rate of straw fuel and feed. In addition, the expansion of corn planting area has caused a large surplus of straw. According to statistics, the average annual amount of straw produced in my country is more than 900 million tons. As the main grain producing area in my country, Heilongjiang Province has a particularly prominent amount of corn straw. With the country's emphasis on black soil protection, it is crucial to improve the soil tillage structure, reduce the use of chemical fertilizers, increase the content of soil organic matter, and promote microbial activity. Straw return to the field is an effective way to solve the problem of excess straw and the most effective way to improve soil, so straw return to the field has been widely implemented. The straw return to the field is first mechanically crushed, and then mechanically buried or mechanically crushed and mixed. The existing straw crushing and returning machine is a single-axis crushing machine, and the straw crushing quality is poor, which affects seed germination and the decomposition speed of straw. Therefore, it is very necessary to optimize the design of the straw crushing and returning machine. The design of this device guides the straw after single-axis crushing to the device for secondary crushing. The self-priming design facilitates the introduction, secondary crushing and export of straw. This device can be used as a straw crushing and returning to the field unit, or it can be fixed behind an existing straw crushing and returning machine to complete the secondary crushing of straw. It has a simple structure, fine crushing and is easy to promote. Summary of the invention
[0003] The utility model aims to provide a vertical self-priming straw crushing device to improve the operation quality of a straw crushing and returning machine to the field, with a simple structure and strong applicability.
[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is: a vertical self-priming straw crushing device, including a bracket, a crushing roller, and a crushing fixed knife.
[0005] The bracket includes a crushing cylinder and a crushing roller fixing frame. The diameter of the crushing cylinder is 500mm-600mm, the cylinder wall thickness is 4mm, and the height is 400mm-500mm. The crushing roller fixing frames are fixed above and below the crushing cylinder. The upper half opening of the crushing cylinder is a straw inlet, and guide plate mounting holes are arranged around the straw inlet.
[0006] The crushing fixed knife is folded into a U shape with a steel plate, with a length of 130mm to 150mm, a height of 30mm, and a width of 30mm. The end of the U-shaped steel plate is a pointed tooth with a tooth tip height of 10mm. The six crushing fixed knives are evenly screwed on the cylinder wall below the crushing cylinder.
[0007] The crushing roller comprises a crushing roller shaft, a self-priming crushing component, and a straight crushing component. The crushing roller shaft is fixed on the crushing roller fixing frame with a bearing; the self-priming crushing component is fixed on the middle and lower part of the crushing roller shaft; the self-priming crushing component comprises a self-priming crushing knife and a knife seat. The knife seat is formed by welding three mounting plates evenly embedded in a circular steel plate. The mounting plate is provided with a self-priming crushing knife screw hole. The angle α between the mounting plate and the circular steel plate is 15°. The self-priming crushing knife selects a 45° sawtooth sliding angle. The self-priming crushing knife is screwed to the mounting plate. The straight crushing component is fixed on the crushing roller below the self-priming crushing component. The straight crushing component and the self-priming crushing component are centered and staggered with each other on the horizontal projection plane. The straight crushing component includes a pin-connecting disc and a straight crushing knife. The pin-connecting disc is evenly distributed with pin shaft holes. The pin shaft holes of the upper and lower pin-connecting discs are concentric. The straight crushing knife is serrated on both sides. The concentric pin shaft holes of the pin-connecting disc are pinned to three straight crushing knives. A pulley is installed above the crushing roller, and the power input is completed through the V-belt and the main drive pulley set.
[0008] During operation, the pulley drives the crushing roller to rotate clockwise, and the self-priming crushing knife of the self-priming crushing component drives the airflow to generate downward wind force. The straw after the initial crushing enters the device from the straw inlet under the action of inertia, wind force and guide plate for secondary vertical crushing operation. The self-priming crushing knife and crushing fixed knife of the self-priming crushing component cut and tear the straw. At the same time, the airflow generated by the self-priming crushing component blows the straw downward, and the straight crushing knife and crushing fixed knife of the straight crushing component continue to cut and tear the straw. Finally, the wind force will send the straw that has been crushed for the second time through the device out from below. The intervention of this device improves the fineness of straw crushing and shortens the straw decomposition time. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is the front view of the utility model.
[0010] Figure 2 for Figure 1 Top view of the .
[0011] Figure 3 This is the front view of the crushing tube.
[0012] Figure 4 for Figure 3 Top view of the .
[0013] Figure 5 This is the front view of the crushing roller.
[0014] Figure 6 for Figure 5 Top view.
[0015] Figure 7 This is a schematic diagram of the tool holder structure.
[0016] Figure 8 It is a schematic diagram of the structure of a self-priming crushing knife.
[0017] Fig. 9 These are the front view, left view and top view of the crushing fixed knife. DETAILED DESCRIPTION
[0018] As shown in the attached drawings, the utility model is a vertical self-priming straw crushing device, which comprises a bracket 1, a crushing roller 2, and a crushing fixed knife 3.
[0019] The bracket 1 includes a crushing cylinder 6 and a crushing roller fixing frame 4. The crushing cylinder 6 has a diameter of 500mm to 600mm, a cylinder wall thickness of 4mm, and a height of 400mm to 500mm. The crushing roller fixing frame 4 is fixedly installed above and below the crushing cylinder 6. The upper half opening of the crushing cylinder 6 is a straw inlet 5, and guide plate mounting holes are arranged around the straw inlet 5.
[0020] The crushing fixed knife 3 is folded into a U shape with a steel plate, with a length of 130mm to 150mm, a height of 30mm, and a width of 30mm. The end of the U-shaped steel plate is a pointed tooth with a tooth tip height of 10mm. The six crushing fixed knives 3 are evenly screwed on the cylinder wall below the crushing cylinder 6.
[0021] The crushing roller 2 includes a crushing roller shaft 7, a self-priming crushing component 8, and a straight crushing component 9. The crushing roller shaft 7 is fixedly mounted on the crushing roller fixing frame 4 with a bearing; the self-priming crushing component 8 is fixedly mounted in the middle and lower part of the crushing roller shaft 7; the self-priming crushing component 8 includes a self-priming crushing knife 10 and a knife seat 11. The knife seat 11 is formed by welding three mounting plates evenly embedded in a circular steel plate. The mounting plate is provided with a screw hole for the self-priming crushing knife 10. The angle α between the mounting plate and the circular steel plate is 15°. The self-priming crushing knife 10 selects a 45° sawtooth sliding angle. The self-priming crushing knife 10 is screwed to the mounting plate. The straight crushing component 9 is fixedly mounted on the crushing roller 7 below the self-priming crushing component 8. The straight crushing component 9 and the self-priming crushing component 8 are mutually centered and staggered on the horizontal projection plane. The straight crushing component 9 includes a pin-connecting disc 13 and a straight crushing knife 12. The pin-connecting disc 13 is evenly distributed with 3 pin shaft holes. The pin shaft holes of the upper and lower pin-connecting discs 13 are concentric. The straight crushing knife 12 is serrated on both sides. The concentric pin shaft holes of the pin-connecting disc 13 are pin-connected with 3 straight crushing knives 12. A pulley is installed above the crushing roller 7, and the power input is completed through the V-belt and the main drive pulley set.
Claims
1. A vertical self-priming straw crushing device, comprising a support (1), a crushing roller (2), and a crushing fixed knife (3), characterized in that: The support (1) comprises a crushing cylinder (6) and a crushing roller fixing frame (4). The crushing cylinder (6) has a diameter of 500 mm to 600 mm, a cylinder wall thickness of 4 mm, and a height of 400 mm to 500 mm. The crushing roller fixing frame (4) is fixedly mounted above and below the crushing cylinder (6). The upper half of the crushing cylinder (6) is a straw inlet (5), and a guide plate mounting hole is arranged around the straw inlet (5). The crushing fixed knife (3) is folded into a U shape with a steel plate, and has a length of 130 mm to 150 mm, a height of 30 mm, and a width of 30 mm. The end of the U-shaped steel plate is a pointed tooth, and the tooth tip height is 10 mm. Six crushing fixed knives (3) are evenly screwed on the cylinder wall below the crushing cylinder (6). The crushing roller (2) comprises a crushing roller shaft (7), a self-priming crushing component (8), and a straight crushing component (9). The crushing roller shaft (7) is fixedly mounted on the crushing roller fixing frame with a bearing. (4); the self-priming crushing component (8) is fixedly mounted on the middle and lower part of the crushing roller shaft (7); the self-priming crushing component (8) comprises a self-priming crushing knife (10) and a knife seat (11); the knife seat (11) is formed by three mounting plates evenly embedded in a circular steel plate and welded together; the mounting plate is provided with a self-priming crushing knife (10) screw connection hole; the angle α between the mounting plate and the circular steel plate is 15°; the self-priming crushing knife (10) is screwed to the mounting plate; the straight crushing component (9) is fixedly mounted on the crushing roller shaft (7) below the self-priming crushing component (8); the straight crushing component (9) and the self-priming crushing component (8) are mutually centered and staggered on a horizontal projection plane; the straight crushing component (9) comprises a pin connection plate (13) and a straight crushing knife (12); the pin connection plate (13) is evenly provided with three pin shaft holes; the pin shaft holes of the upper and lower pin connection plates (13) are concentric; the concentric pin shaft holes of the pin connection plate (13) are all pin-connected to the three straight crushing knives (12).