Agricultural technology seed screening device

Abstract

The utility model relates to the technical field of seed screening, in particular to an agricultural technology seed screening device which comprises an installation base, the top end of the installation base is connected with a screening box in a sliding mode, and an anti-blocking mechanism is arranged in the screening box. The anti-blocking mechanism comprises a motor fixedly connected to one side of the screening box. According to the anti-blocking mechanism, seeds are screened through the meshes, the motor is started to drive the reciprocating lead screw to rotate while screening is conducted, the multiple cylinders and the corresponding push rods are driven to move synchronously under the action of the movable rods and the round rods, and therefore the multiple push rods sequentially enter the multiple sets of meshes under the action of the springs; according to the seed screening device, seeds clamped in the meshes can be pushed out under the effect that normal screening of the meshes is not affected, the meshes are prevented from being blocked, the push rods move in a reciprocating mode, the inner walls of the meshes can be cleaned intermittently through the push rods in the screening process of the multiple sets of meshes, the cleaning effect on the meshes is guaranteed, and therefore the seed screening efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of seed screening technology, and in particular to an agricultural technology seed screening device. Background Technology

[0002] Seeds are the structures formed from the ovules of seed plants after fertilization. To ensure consistent germination after planting, seeds are usually screened before planting. According to a search, the Chinese patent "A Seed Screening Device for Agricultural Technology Promotion" (CN219253244U) uses a pushing device to fix the motor to the base frame and the U-shaped block to the screening box. The motor drives the disc to rotate, which allows the connecting rod to be adjusted in position. This allows the pulling rod to move the screening box back and forth, thus preventing seeds from getting stuck on the first and second screens and reducing the burden of cleaning.

[0003] Although the above application enables the screening box to move back and forth for screening, some seeds with a diameter close to that of the screen mesh will still get stuck in the mesh when passing through the mesh during the screening process, causing mesh blockage and thus affecting screening efficiency.

[0004] Therefore, an agricultural seed screening device is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an agricultural seed screening device to solve the above-mentioned problems. It improves the problem that some seeds with a mesh diameter close to that of the sieve will still get stuck in the mesh during the screening process, causing mesh blockage and affecting screening efficiency.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: an agricultural seed screening device, comprising: a mounting base, a screening box slidably connected to the top of the mounting base, and an anti-blocking mechanism provided inside the screening box;

[0007] The anti-blocking mechanism includes a motor fixedly connected to one side of the screening box. A reciprocating screw is rotatably connected to the inner wall of the screening box. One end of the reciprocating screw passes through the screening box and is fixedly connected to the output shaft of the motor. A moving rod is mounted on the surface of the reciprocating screw. A round rod is fixedly connected to the other end of the moving rod. Multiple cylinders arranged in equal rows are fixedly connected to the upper surface of the round rod. A push rod is slidably connected to the inner wall of the cylinder. The top end of the push rod passes through the cylinder. A spring is fixedly connected between the bottom end of the push rod and the inner bottom wall of the cylinder.

[0008] Preferably, the anti-clogging mechanism further includes a sieve plate fixedly connected to the inner wall of the screening box. The surface of the sieve plate has a rectangular array of mesh holes, the mesh holes being flat-topped cone-shaped. This facilitates better compression of the push rod as it retracts into the cylinder.

[0009] Preferably, a connecting rod is fixedly connected to the lower end of the push rod surface. The other end of the connecting rod extends through the cylinder and is fixedly connected to a corrugated pipe. A fixing rod is fixedly connected to the top end of the corrugated pipe. The other end of the fixing rod is fixedly connected to the top end of the cylinder. A connecting tube is fixedly connected to the top end of the corrugated pipe. The other end of the connecting tube extends through the inner wall of the push rod and is fixedly connected to a fixing tube. The end of the fixing tube extends through the push rod. This provides an upward blowing force to the seeds within the mesh, allowing clogged seeds to be better pushed and moved upward, reducing the resistance when the push rod pushes the seeds, and facilitating the pushing of the seeds while protecting them.

[0010] Preferably, the tip of the push rod is bent into a spherical shape, and the outer diameter of the push rod is smaller than the minimum inner diameter of the mesh. This facilitates better compression of the push rod into the cylinder by the inner wall of the mesh.

[0011] Preferably, a protective pad, which is a rubber component, is fixedly connected to the top end of the push rod. This helps to protect the seed surface.

[0012] Preferably, a ball is rotatably connected to the center of the top end of the push rod. This reduces the friction between the top end of the push rod and the bottom end of the sieve plate during movement, which is beneficial for protecting the protective pad.

[0013] Preferably, the middle part of the connecting pipe is made of flexible tubing. This ensures the stability of the connecting pipe connection when the push rod moves up and down.

[0014] The beneficial effects of this utility model are:

[0015] 1. The above-mentioned anti-clogging mechanism uses mesh to screen seeds. While screening, the motor drives the reciprocating screw to rotate. Under the action of the moving rod and the round rod, multiple cylinders and corresponding push rods move synchronously. This allows multiple push rods to enter multiple sets of meshes in sequence under the action of springs. This helps to push out seeds stuck in the meshes without affecting the normal screening process, thus avoiding mesh blockage. Furthermore, the reciprocating movement of multiple push rods helps to clean the inner wall of the meshes intermittently during the screening process, ensuring the cleaning effect of the meshes and thus improving the screening efficiency of seeds.

[0016] 2. As the push rod moves downward, external gas simultaneously enters the corrugated tube, which helps the seeds in the corresponding mesh to flow downward better. When the push rod re-enters the mesh, it simultaneously squeezes the gas in the corrugated tube out of the fixed tube, which helps to give the seeds in the mesh an upward blowing force, so that the blocked seeds are better pushed and moved upward, reducing the resistance when the push rod pushes the seeds, and helping to protect the seeds while pushing them. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the screening box of this utility model;

[0019] Figure 3 This is an exploded view of the push rod and sieve plate of this utility model;

[0020] Figure 4 This is a cross-sectional view of the cylinder of this utility model;

[0021] Figure 5 for Figure 3 A magnified view of A in the middle.

[0022] In the diagram: 1. Mounting base; 2. Screening box; 3. Anti-blocking mechanism; 31. Motor; 32. Reciprocating screw; 33. Moving rod; 34. Round rod; 35. Cylinder; 36. Push rod; 37. Spring; 38. Screen plate; 39. Mesh; 310. Connecting rod; 311. Corrugated pipe; 312. Fixing rod; 313. Connecting pipe; 314. Fixing pipe; 315. Protective pad; 316. Ball. 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. 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.

[0024] In practical implementation: such as Figure 1-5 As shown, an agricultural technology seed screening device includes: a mounting base 1, a screening box 2 slidably connected to the top of the mounting base 1, and an anti-blocking mechanism 3 provided inside the screening box 2;

[0025] The anti-blocking mechanism 3 includes a motor 31 fixedly connected to one side of the screening box 2. A reciprocating screw 32 is rotatably connected to the inner wall of the screening box 2. One end of the reciprocating screw 32 passes through the screening box 2 and is fixedly connected to the output shaft of the motor 31. A moving rod 33 is installed on the surface of the reciprocating screw 32. A round rod 34 is fixedly connected to the other end of the moving rod 33. A plurality of cylinders 35 arranged in equal rows are fixedly connected to the upper surface of the round rod 34. A push rod 36 is slidably connected to the inner wall of the cylinder 35. The top end of the push rod 36 passes through the cylinder 35. A spring 37 is fixedly connected between the bottom end of the push rod 36 and the inner bottom wall of the cylinder 35.

[0026] The top of the screening box 2 is equipped with a feed inlet, through which seeds can be poured in. When the anti-blocking mechanism 3 is activated, the mesh 39 on the surface of the sieve plate 38 screens the seeds.

[0027] When the device is in operation, the controller starts the motor 31 to drive the reciprocating screw 32 to rotate, so that the moving rod 33 drives the round rod 34 to move back and forth. When the device is in use, the controller adjusts the speed of the motor 31 so that the output shaft of the motor 31 rotates at a low speed. The inner wall of the screening box 2 is fixedly connected to a protective cover, and the reciprocating screw 32 is set inside the protective cover.

[0028] A horizontal row of mesh holes 39 forms a group. The number of push rods 36 is the same as the number of mesh holes 39 in each group, and their positions correspond one-to-one. In the initial state, the spring 37 is in the released state, and the push rods 36 penetrate into the mesh holes 39.

[0029] like Figure 3 and Figure 4 As shown, the anti-blocking mechanism 3 also includes a sieve plate 38 fixedly connected to the inner wall of the screening box 2. The surface of the sieve plate 38 has mesh holes 39 arranged in a rectangular array, and the mesh holes 39 are flat-topped cone-shaped. The top of the push rod 36 is bent into a spherical shape, and the outer diameter of the push rod 36 is smaller than the minimum inner diameter of the mesh hole 39.

[0030] Multiple anti-blocking mechanisms 3 can be set according to specific screening requirements. When multiple anti-blocking mechanisms 3 are set, the diameter of the mesh 39 in the screen plate 38 in the anti-blocking mechanism 3 gradually decreases from top to bottom. The cylinder 35, push rod 36, reciprocating screw 32 and the screen plate 38 have the same inclination angle. When the cylinder 34 drives the push rod 36 to move through the cylinder 35, the inclined surface of the inner wall of the mesh 39 will squeeze the push rod 36, causing the push rod 36 to retract into the cylinder 35. The spring 37 retracts. When moving further, the top of the push rod 36 will contact the bottom of the screen plate 38 and disengage from the mesh 39. When moving further, multiple push rods 36 will overlap with the next set of mesh 39. The spring 37 loses its compression and drives the push rod 36 to reset, so that the push rod 36 re-enters the mesh 39 and pushes out the seeds in the mesh 39.

[0031] like Figure 4 and Figure 5 As shown, a connecting rod 310 is fixedly connected to the lower end of the surface of the push rod 36. The other end of the connecting rod 310 passes through the cylinder 35 and is fixedly connected to a bellows 311. A fixing rod 312 is fixedly connected to the top end of the bellows 311. The other end of the fixing rod 312 is fixedly connected to the top end of the cylinder 35. A connecting pipe 313 is fixedly connected to the top end of the bellows 311. The other end of the connecting pipe 313 passes through the inner wall of the push rod 36 and is fixedly connected to a fixing pipe 314. The end of the fixing pipe 314 passes through the push rod 36.

[0032] The overall shape of the connecting tube 313 is "V". When the push rod 36 retracts into the cylinder 35, it will drive the bottom end of the bellows 311 to move downwards simultaneously through the connecting rod 310. At this time, the external air will enter the bellows 311 through the fixed tube 314 and the connecting tube 313. When the push rod 36 moves upwards under the action of the spring 37 and enters the mesh 39 again, the connecting rod 310 moves upwards synchronously and squeezes the bellows 311, causing the gas in the bellows 311 to be blown out through the connecting tube 313 and the fixed tube 314, giving the seeds in the mesh 39 an upward blowing force.

[0033] like Figure 5 As shown, a protective pad 315 is fixedly connected to the top of the push rod 36. The protective pad 315 is a rubber component.

[0034] When the top of the push rod 36 pushes the seed in the mesh 39, the surface of the protective pad 315 comes into contact with the surface of the seed, and the shape of the protective pad 315 matches the shape of the top of the push rod 36.

[0035] like Figure 5 As shown, a ball 316 is rotatably connected to the top center of the push rod 36. When the push rod 36 detaches from the mesh 39 during its movement, the surface of the ball 316 will contact the bottom end of the sieve plate 38, and the ball 316 will rotate during the continued movement.

[0036] like Figure 5 As shown, the middle part of the connecting pipe 313 is a flexible hose. It can contract and deform.

[0037] In use, seeds are poured into the screen plate 38 of the screening box 2 through the feed inlet and screened through the mesh 39. At this time, the controller starts the motor 31, which drives the reciprocating screw 32 to rotate. This causes the moving rod 33 to drive the round rod 34 to move reciprocally. During the movement of the round rod 34, multiple cylinders 35 and corresponding push rods 36 move synchronously. When the push rod 36 moves, the inclined surface of the inner wall of the mesh 39 presses against the push rod 36, causing it to retract into the cylinder 35. The spring 37 then contracts. Simultaneously, the connecting rod 310 moves the bottom end of the bellows 311 downwards, allowing external air to enter the bellows 311 through the fixed pipe 314 and the connecting pipe 313. Inside, the round rod 34 continues to move, causing the push rod 36 to disengage from the mesh 39, and the surface of the ball 316 at the top of the push rod 36 will contact the bottom of the sieve plate 38. Continuing to move, multiple push rods 36 will overlap with the next set of meshes 39, the spring 37 will lose its compression, and the push rod 36 will reset, causing it to re-enter the mesh 39 and push out the seeds. Simultaneously, the connecting rod 310 moves upward and compresses the corrugated pipe 311, causing the gas inside the corrugated pipe 311 to be blown out through the connecting pipe 313 and the fixed pipe 314, giving the seeds inside the mesh 39 an upward blowing force, thus causing the seeds blocked in the mesh 39 to detach from the mesh 39.

[0038] The reciprocating screw 32 is represented by two threaded grooves with the same pitch and opposite directions, connected at both ends by a transition curve. The rotation of the reciprocating screw 32 causes the side of the spiral groove to push the slider placed in the spiral groove to make axial reciprocating motion. Therefore, when the reciprocating screw 32 rotates, it will drive the round rod 34 to reciprocate through the moving rod 33.

[0039] It should be noted that the motor 31 and other components mentioned above are all devices with relatively mature existing technologies. The specific model can be selected according to actual needs. At the same time, the motor 31 can be powered by an internal power supply or by AC power. The specific power supply method should be selected according to the situation, and will not be elaborated here.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An agricultural technology seed screening device, characterized in that, include: Mounting base (1), the top of which is slidably connected to a screening box (2), and the screening box (2) is provided with an anti-blocking mechanism (3) inside; The anti-blocking mechanism (3) includes a motor (31) fixedly connected to one side of the screening box (2). A reciprocating screw (32) is rotatably connected to the inner wall of the screening box (2). One end of the reciprocating screw (32) passes through the screening box (2) and is fixedly connected to the output shaft of the motor (31). A moving rod (33) is installed on the surface of the reciprocating screw (32). A round rod (34) is fixedly connected to the other end of the moving rod (33). A plurality of cylinders (35) arranged in equal rows are fixedly connected to the upper surface of the round rod (34). A push rod (36) is slidably connected to the inner wall of the cylinder (35). The top end of the push rod (36) passes through the cylinder (35). A spring (37) is fixedly connected between the bottom end of the push rod (36) and the inner bottom wall of the cylinder (35).

2. The agricultural seed screening device according to claim 1, characterized in that: The anti-blocking mechanism (3) also includes a sieve plate (38) fixedly connected to the inner wall of the screening box (2). The surface of the sieve plate (38) is provided with mesh holes (39) arranged in a rectangular array. The mesh holes (39) are flat-topped cone-shaped.

3. The agricultural seed screening device according to claim 1, characterized in that: A connecting rod (310) is fixedly connected to the lower end of the surface of the push rod (36). The other end of the connecting rod (310) passes through the cylinder (35) and is fixedly connected to a corrugated pipe (311). A fixing rod (312) is fixedly connected to the top end of the corrugated pipe (311). The other end of the fixing rod (312) is fixedly connected to the top end of the cylinder (35). A connecting pipe (313) is fixedly connected to the top end of the corrugated pipe (311). The other end of the connecting pipe (313) passes through the inner wall of the push rod (36) and is fixedly connected to a fixing pipe (314). The end of the fixing pipe (314) passes through the push rod (36).

4. The agricultural seed screening device according to claim 1, characterized in that: The top of the push rod (36) is bent into a spherical shape, and the outer diameter of the push rod (36) is smaller than the minimum inner diameter of the mesh (39).

5. The agricultural seed screening device according to claim 1, characterized in that: The top end of the push rod (36) is fixedly connected to a protective pad (315), which is a rubber component.

6. The agricultural seed screening device according to claim 1, characterized in that: A ball (316) is rotatably connected to the top center of the push rod (36).

7. The agricultural seed screening device according to claim 3, characterized in that: The middle part of the connecting pipe (313) is configured as a flexible tube.

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