Straw pulverizing device for agricultural production

Abstract

The utility model discloses a kind of straw pulverizing devices for agricultural production, it is related to straw pulverizing technical field, including chassis, the top side of chassis is equipped with pulverizing box by bearing table, the inside of pulverizing box is equipped with pulverizing shaft by bearing, multiple groups of cutters are set on pulverizing shaft, the bottom of pulverizing box is provided with discharge gate, the top of discharge gate is fixedly connected with top screen, the bottom of top screen is provided with bottom screen that is tightly attached to the bottom of top screen.The utility model can set up different thickness according to different position of pulverizing cutter in pulverizing box by setting cutter group, can carry out phased pulverization to straw, achieve the purpose of preventing cutter near feed inlet position from being damaged, by setting top screen and bottom screen, after adjusting screw shaft moves, the movement between bottom screen and top screen can reduce and expand filter hole, achieve the purpose of changing filter diameter without replacing filter screen.

Description

Technical Field

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

[0002] In the agricultural sector, crop straw consists of the stems and leaves that remain after crop harvest. Resources such as corn and rice straw are abundant, and their rational utilization is of great significance. By crushing and returning it to the field, soil fertility can be increased and soil structure improved. When made into feed, it can solve some of the feed source problems for livestock farming. When processed into biomass fuel, it can also contribute to energy supply.

[0003] A straw crusher disclosed in Chinese utility model patent application CN222722045U can significantly improve the feeding speed of the entire device. However, straw needs to be crushed into particles of different diameters depending on its intended use. Existing crushing devices can only change the particle diameter by changing the screen, which is inconvenient for adjusting the screen diameter. Furthermore, the crushing blades located at the feed inlet are subjected to greater force, which can easily damage the blades and affect their sharpness, making maintenance and replacement quite troublesome. Utility Model Content

[0004] (a) Technical problems to be solved In view of the shortcomings of the prior art, this utility model provides a straw crushing device for agricultural production, which solves the problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a base frame, a crushing box is installed on one side of the top of the base frame via a support platform, a control switch is provided on one side of the top of the support platform, a feed inlet is provided on the side wall of the crushing box, a crushing shaft is installed inside the crushing box via a bearing, and multiple sets of blades are provided on the crushing shaft. The bottom of the crushing box is provided with a discharge port, the top of which is fixedly connected to a top screen, and the bottom of the top screen is provided with a bottom screen that is tightly attached to the bottom of the top screen. One end of the bottom screen is provided with an adjusting threaded shaft.

[0006] Optionally, the blade assembly has pulverizing blades evenly spaced, with the blades closer to the feed inlet being thicker and shorter, and the blades further away being thinner and longer.

[0007] Optionally, sliding shafts are provided at equal intervals on the inner wall of the crushing box on the side away from the feed inlet, and sliding blocks fitted on the sliding shafts are provided at the bottom of the bottom screen.

[0008] Optionally, the outer wall of the crushing chamber is provided with an adjusting cylinder, and an adjusting nut is installed at the end of the adjusting cylinder through a bearing. The adjusting threaded shaft is threadedly connected to the adjusting nut, and a scale surface with adjustment graduations is provided on one side of the adjusting threaded shaft.

[0009] Optionally, a maintenance cover is hinged to the top wall of the crushing chamber, the bottom of the maintenance cover is mounted on the crushing chamber by maintenance bolts, and a handle is provided in the middle of the maintenance cover.

[0010] Optionally, a drive motor is installed at one end of the base frame, a pulley box is fixedly connected to one side of the drive motor, and the other end of the pulley box is fixedly connected to the crushing box. Two pulleys are installed inside the pulley box, and the two pulleys are respectively connected to the crushing shaft and the output shaft of the drive motor. The two pulleys are connected by a belt.

[0011] Three beneficial effects This utility model provides a straw crushing device for agricultural production, which has the following beneficial effects: 1. This straw crushing device for agricultural production, by setting up a set of blades, can set the crushing blades inside the crushing box to different thicknesses according to different positions. Furthermore, the length of the blades on each set of blades is set to different lengths according to the shape of the top screen. When crushing straw, it can crush the straw in stages, thereby preventing damage to the blades near the feed inlet.

[0012] 2. This straw crushing device for agricultural production can tilt the top screen to quickly move the initially crushed straw away from the feed inlet. By setting an adjusting screw shaft, the filter holes can be reduced or enlarged by moving between the bottom and top screens, thus changing the filter diameter without replacing the filter screen. Attached Figure Description

[0013] Figure 1 This is a top-view three-dimensional structural diagram of the present invention; Figure 2 This is a front-view three-dimensional structural schematic diagram of the present invention; Figure 3 This is a side view sectional structural diagram of the crushing box of this utility model; Figure 4 This is a schematic diagram of the three-dimensional structure of the adjusting cylinder of this utility model.

[0014] In the diagram: 1. Base frame; 2. Drive motor; 3. Pulley box; 4. Load-bearing platform; 5. Crushing box; 6. Feed inlet; 7. Discharge outlet; 8. Maintenance cover; 9. Crushing shaft; 10. Adjusting cylinder; 11. Adjusting threaded shaft; 12. Control switch; 13. Maintenance bolt; 14. Adjusting nut; 15. Tool set; 16. Bottom screen; 18. Top screen; 19. Sliding shaft; 20. Sliding block; 21. Adjustment scale. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1 to 4 This utility model provides a technical solution: a straw crushing device for agricultural production, including a base frame 1, a crushing box 5 installed on one side of the top of the base frame 1 via a support platform 4, a control switch 12 provided on one side of the top of the support platform 4, a feed inlet 6 provided on the side wall of the crushing box 5, a crushing shaft 9 installed inside the crushing box 5 via a bearing, and multiple sets of blade groups 15 provided on the crushing shaft 9, with crushing blades evenly distributed on the blade groups 15, the crushing blades on the side closer to the feed inlet 6 being thicker and shorter, and the crushing blades on the side farther away being thinner and longer, the number of blades on the blade groups 15 gradually increasing in the direction away from the feed inlet 6, for example, the blade group 15 on the side closer to the feed inlet 6 has four blades per circle, the adjacent set of blade groups 15 has six blades per circle, and so on; By setting the blade assembly 15, the crushing blades inside the crushing box 5 can be set to different thicknesses according to different positions. Furthermore, the blade length on each blade assembly 15 is set to different lengths according to the shape of the top screen 18. When crushing straw, the straw can be crushed in stages, thereby preventing the blades near the feed inlet 6 from being damaged by frequent use.

[0017] Furthermore, to ensure that the initially cut straw is promptly moved away from the feed inlet 6, the blades on each set of blades 15 can be set in a fan shape. The power generated by the rotation of the tool will cause airflow, accelerating the straw away from the feed inlet 6, so that the other sets of blades 15 can play their full role.

[0018] The bottom of the crushing box 5 is provided with a discharge port 7, and the top of the discharge port 7 is fixedly connected to a top screen 18. The top screen 18 is half of a frustum-shaped side wall. The bottom of the top screen 18 is provided with a bottom screen 16 that is closely attached to the bottom of the top screen 18. One end of the bottom screen 16 is provided with an adjusting threaded shaft 11. The filter holes on the bottom screen 16 and the top screen 18 are all rectangular. The size of the filter holes can be adjusted by moving the bottom screen 16 to adjust the overlapping part between the filter holes.

[0019] The inner wall of the crushing box 5 away from the feed inlet 6 is provided with sliding shafts 19 at equal intervals, and the bottom of the bottom screen 16 is provided with sliding blocks 20 fitted on the sliding shafts 19.

[0020] The outer wall of the crushing box 5 is provided with an adjusting cylinder 10. The end of the adjusting cylinder 10 is equipped with an adjusting nut 14 through a bearing. The adjusting threaded shaft 11 is threadedly connected to the adjusting nut 14. One side of the adjusting threaded shaft 11 is provided with a scale surface engraved with the adjusting scale 21.

[0021] A maintenance cover 8 is movably mounted on the top wall of the crushing chamber 5 via a hinge. The bottom of the maintenance cover 8 is mounted on the crushing chamber 5 via maintenance bolts 13. A handle is provided in the middle of the maintenance cover 8.

[0022] One end of the base frame 1 is equipped with a drive motor 2. A pulley box 3 is fixedly connected to one side of the drive motor 2. The other end of the pulley box 3 is fixedly connected to the crushing box 5. The pulley box 3 has two pulleys inside. The two pulleys are respectively connected to the crushing shaft 9 and the output shaft of the drive motor 2. The two pulleys are connected by a belt.

[0023] By setting the top screen 18, the top screen 18 can be tilted so that the initially crushed straw can quickly move away from the feed inlet 6. By setting the adjusting threaded shaft 11, the filter holes can be reduced or enlarged by moving between the bottom screen 16 and the top screen 18, so as to change the filter diameter without replacing the filter screen.

[0024] Working principle: In use, the drive motor 2 is started by the control switch 12. The output shaft of the drive motor 2 drives the active pulley inside the pulley box 3 to rotate. The belt drives the pulley at the end of the crushing shaft 9 to rotate, so that the crushing shaft 9 rotates at high speed, thereby making all the cutter groups 15 rotate at high speed. Straw is manually fed into the crushing chamber 5 through the feed inlet 6. Then, the blade assembly 15 near the feed inlet 6 performs initial cutting of the straw. These blades are relatively thick and not easily damaged. The chopped straw falls onto the top screen 18 and accumulates. Because the top screen 18 is shaped like the side wall of a frustum, ... Figure 3 As shown, the initially cut straw will gradually move away from the feed inlet 6 and be crushed by other sets of blades 15. This can effectively group and assign tasks to the blades inside the crushing box 5, which can prevent the blades near the feed inlet 6 from being damaged due to high frequency of use, and can also ensure the crushing effect. When adjusting the size of the filtered particles, the adjusting screw shaft 11 is moved by rotating the adjusting nut 14. According to the adjustment scale 21 on the side of the adjusting screw shaft 11, the distance that the bottom screen 16 moves to the bottom of the top screen 18 can be determined. The filter holes on the bottom screen 16 and the top screen 18 are rectangular. By adjusting the overlapping part between the filter holes by moving the bottom screen 16, the size of the filter holes can be adjusted, so as to change the filter diameter without replacing the filter screen.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A straw crushing device for agricultural production, comprising a base frame (1), a crushing box (5) mounted on one side of the top of the base frame (1) via a support platform (4), and a control switch (12) provided on one side of the top of the support platform (4), characterized in that: The side wall of the crushing box (5) is provided with a feed inlet (6), and the crushing shaft (9) is installed inside the crushing box (5) through a bearing. Multiple sets of cutter groups (15) are provided on the crushing shaft (9). The bottom of the crushing box (5) is provided with a discharge port (7), and a top screen (18) is fixedly connected to the top of the discharge port (7). A bottom screen (16) is provided at the bottom of the top screen (18) and an adjusting threaded shaft (11) is provided at one end of the bottom screen (16).

2. The straw crushing device for agricultural production according to claim 1, characterized in that: The tool assembly (15) has pulverizing blades distributed at equal intervals. The pulverizing blades on the side closer to the feed inlet (6) are thicker and shorter, while the pulverizing blades on the side farther away are thinner and longer.

3. The straw crushing device for agricultural production according to claim 1, characterized in that: The inner wall of the crushing box (5) away from the feed inlet (6) is provided with sliding shafts (19) at equal intervals, and the bottom screen (16) is provided with sliding blocks (20) fitted on the sliding shafts (19).

4. The straw crushing device for agricultural production according to claim 3, characterized in that: The outer wall of the crushing box (5) is provided with an adjusting cylinder (10). The end of the adjusting cylinder (10) is equipped with an adjusting nut (14) through a bearing. The adjusting thread shaft (11) is threadedly connected to the adjusting nut (14). A scale surface with an adjusting scale (21) is provided on one side of the adjusting thread shaft (11).

5. The straw crushing device for agricultural production according to claim 1, characterized in that: A maintenance cover (8) is installed on the top wall of the crushing box (5) by means of a hinge. The bottom of the maintenance cover (8) is installed on the crushing box (5) by means of maintenance bolts (13). A handle is provided in the middle of the maintenance cover (8).

6. The straw crushing device for agricultural production according to claim 1, characterized in that: One end of the base frame (1) is equipped with a drive motor (2), and a pulley box (3) is fixedly connected to one side of the drive motor (2). The other end of the pulley box (3) is fixedly connected to the crushing box (5). The pulley box (3) is equipped with two pulleys inside. The two pulleys are respectively connected to the crushing shaft (9) and the output shaft of the drive motor (2). The two pulleys are connected by a belt.

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