Seed screening device

Abstract

The utility model relates to the technical field of screening equipment, in particular to a seed screening device which comprises a screening drum, an inserting ring is arranged at the upper end of the screening drum, an inserting ring is arranged at the lower end of the screening drum, an annular cloth sleeve is embedded in the inner wall of the screening drum, a screening grate is connected to the bottom wall of the cloth sleeve, a mounting frame is arranged in the screening drum, and a swing ball is suspended at the bottom end of the mounting frame and located in the center of the screening drum. The lower end of the spring is connected with the center of the surface of the screen grate; when the screening machine is used, winnowing is conducted firstly, light sundries, seed shells and shrunken seeds are removed in advance, then the screen drum is vibrated through the vibrator, the screen grate synchronously starts to shake, and therefore materials start to be screened; meanwhile, vibration is transmitted to the swing ball through the mounting frame, the swing ball shakes, the shaking amplitude of the screen grate in the screen drum is increased, the materials randomly turn over on the screen grate, and therefore the vibration amplitude of the screen grate is increased, material separation is accelerated, and the screening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, in particular to a seed screening device. Background Art

[0002] Seed screening is one of the methods for cleaning crop seeds. Using seed sieves with different mesh sizes and shapes, weeds can remove impurities (mud, gravel, foreign crop seeds, weed seeds, galls, husks, etc.), blighted seeds, and small seeds, while retaining high-quality seeds that are large, plump, and uniform, thus improving seed quality.

[0003] Most existing seed screening devices are vertically tilted stacked sieves with different mesh sizes. For example, the patent document with announcement number CN219943624 U discloses a seed screening device with a multi-level screening mesh, which allows seeds to roll on the sieve for screening. However, the seeds roll freely. When a large number of seeds are poured in, the seeds are stacked and impurities or small particles in the upper layer cannot be removed, affecting the screening quality.

[0004] To this end, the utility model provides a seed screening device, which can maintain a high screening efficiency when a large amount of injected materials is present. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art and to propose a seed screening device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A seed screening device comprises a sieve cylinder, wherein the upper end of the sieve cylinder is provided with an insertion ring, the lower end is provided with a plug-in ring, an annular cloth cover is embedded in the inner wall of the sieve cylinder, the bottom wall of the cloth cover is connected to a sieve grate, a mounting frame is provided in the sieve cylinder, the bottom end of the mounting frame is located in the center of the sieve cylinder and a pendulum ball is suspended thereon, the bottom end of the pendulum ball is connected to a spring, and the lower end of the spring is connected to the center of the sieve grate surface.

[0008] Preferably, the mounting frame includes a collar, a sunken bridge frame is fixed on the inner wall of the collar, a pull rope is fixed at the center of the lower end of the bridge frame, and the bottom end of the pull rope is fixedly connected to the swing ball.

[0009] Preferably, the insertion ring depth is equal to the sum of the plug-in ring height and the ring thickness.

[0010] Preferably, a movable buckle is fixed to the bottom end of the spring, and a fixed ring that cooperates with the movable buckle is fixed to the center of the screen surface.

[0011] Preferably, a plurality of elastic members are evenly distributed on the inner wall of the sieve drum, and the plurality of elastic members are fixedly connected to the outer wall of the sieve grate.

[0012] Preferably, the elastic member is detachably connected to the inner wall of the screen drum and the outer wall of the screen grate.

[0013] Preferably, the bottom surface of the plug-in ring and the surface of the insertion ring are both provided with magnetic sealing rings.

[0014] Preferably, the upper and lower ends of the cloth sleeve are sealed with the inner wall of the screen drum and the outer wall of the screen grate respectively.

[0015] Preferably, it also includes an air selection system, which includes a hopper suspended above the screen drum, a conveying pipe is provided at the lower end of the hopper, and the side walls of the conveying pipe are symmetrically connected to a separation pipe and an air supply pipe, and the air supply pipe is connected to a blower.

[0016] Compared with the prior art, the present invention provides a seed screening device with the following beneficial effects:

[0017] 1. When in use, first carry out air separation to remove light debris, seed shells, and deflated seeds in advance, and then use the vibrator to vibrate the screen drum, so that the screen grate starts to shake synchronously, thereby starting to screen the material; at the same time, the vibration is transmitted to the swing ball through the mounting frame, and the swing ball shakes, causing the screen grate to shake more in the screen drum, causing the material to tumble randomly on the screen grate, thereby increasing the vibration amplitude of the screen grate, accelerating material separation, and improving screening efficiency.

[0018] 2. The mounting frame, swing ball, spring, screen drum and screen grate are all detachable, which is convenient for maintenance and replacement. It is also suitable for screening small amounts of materials, thus improving the applicability of the device.

[0019] 3. The inner wall of the screen drum is evenly distributed with multiple elastic parts, which are fixedly connected to the outer wall of the screen grate to limit the shaking of the screen grate and prevent the screen grate from tilting in a certain direction, causing the material to gather on the cloth cover and unable to be screened.

[0020] 4. Magnetic sealing rings are provided on the bottom surface of the plug-in ring and the surface of the insertion ring to increase the tightness of the connection between the upper and lower layers of the screen drum and improve the stability of the screen drum when stacked.

[0021] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on an examination of the following; or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the stacked double-layer screen drums of the present invention.

[0023] Figure 2 It is a bottom view schematic diagram of the screen drum of the present invention.

[0024] Figure 3 It is an overall cross-sectional schematic diagram of the present utility model.

[0025] Figure 4 For the utility model Figure 3 A partial schematic diagram of point A.

[0026] In the figure: 1. screen drum; 2. insertion ring; 3. plug-in ring; 4. mounting frame; 5. swing ball; 6. movable buckle; 7. fixing ring; 8. cloth cover; 9. screen grate; 10. spring; 11. elastic member; 12. hopper; 13. conveying pipe; 14. separation pipe; 15. blower; 401. collar; 402. bridge frame. DETAILED DESCRIPTION

[0027] The following is a combination of the appended examples of the present invention Figure 1-4 , the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Example 1. In order to solve the problems existing in the prior art, this embodiment provides a seed screening device, including a wind selection system and a screen drum 1. The upper end of the screen drum 1 is provided with an insertion ring 2 and the lower end is provided with a plug-in ring 3. An annular cloth cover 8 is embedded on the inner wall of the screen drum 1, and the bottom wall of the cloth cover 8 is connected to a screen grate 9. A mounting frame 4 is provided in the screen drum 1. The bottom end of the mounting frame 4 is located in the center of the screen drum 1 and a pendulum ball 5 is suspended thereon. The bottom end of the pendulum ball 5 is connected to a spring 10, and the lower end of the spring 10 is connected to the center of the surface of the screen grate 9.

[0029] The upper and lower ends of the cloth cover 8 are respectively sealed with the inner wall of the screen cylinder 1 and the outer wall of the screen grate 9 to avoid material leakage.

[0030] The mesh of the screen grate 9 is woven by metal wire in a square shape and is divided into several specifications according to the opening of the screen hole or the diameter of the metal wire. Corresponding to materials of different particle sizes, multiple screen cylinders 1 are stacked, and the mesh of the screen grate 9 arranged in the screen cylinder 1 gradually decreases from top to bottom.

[0031] The air separation system includes a hopper 12, which is fixed on a frame and suspended above the screen drum 1 (the frame is not shown in the drawings). A conveying pipe 13 is provided at the lower end of the hopper 12. The side walls of the conveying pipe 13 are symmetrically connected to a separation pipe 14 and an air supply pipe, and the air supply pipe is connected to a blower 15.

[0032] When in use, the sieve drums 1 are stacked on the vibrating machine. At this time, the plug-in ring 3 at the lower end of the upper sieve drum 1 is inserted into the insert ring 2 at the upper end of the lower sieve drum 1, so that the two adjacent sieve drums 1 are connected. Then, the bracket is used to help the sieve drum 1 to remain stable on the vibrating machine and will not tilt easily. Seeds are injected through the hopper 12, and the seeds first fall along the conveying pipe 13. During the falling process, the blower 15 blows high-pressure air to blow the light impurities, deflated seeds, seed shells and other materials mixed with the seeds into the separation pipe 14, and then from the separation pipe 1 4 is discharged. Preferably, a cloth bag is provided at the end of the separation tube 14 to collect impurities and prevent them from flying around. At the same time, the vibrator is started, and the screen drum 1 vibrates, thereby transmitting the vibration to the mounting frame 4, and then to the swing ball 5 through the mounting frame 4. The swing ball 5 vibrates and shakes, and then drives the screen grate 9 to shake in the screen drum 1, so that the material is randomly tumbled on the screen grate 9, thereby increasing the vibration amplitude of the screen grate 9, accelerating the separation of materials, and improving the screening efficiency. At the same time, the screen grate 9 with different meshes can realize the particle size distinction of the seeds.

[0033] In embodiment 2, the mounting frame 4 includes a collar 401, a bridge frame 402 is fixed to the inner wall of the collar 401, a pull rope is fixed to the center of the lower end of the bridge frame 402, the bottom end of the pull rope is fixedly connected to the pendulum ball 5, a movable buckle 6 is fixed to the bottom end of the spring 10, and a fixed ring 7 that cooperates with the movable buckle 6 is fixed to the center of the surface of the screen grate 9. Through the cooperation between the movable buckle 6 and the fixed ring 7, the spring 10 can be separated from the screen grate 9, so that the mounting ring, the pendulum ball 5, the spring 10, and the movable buckle 6 can be removed. When the amount of material injected is small, the equipment can be removed to reduce the load on the vibration machine.

[0034] The depth of the insertion ring 2 is equal to the sum of the height of the plug-in ring 3 and the thickness of the collar 401. When multiple layers of screen cylinders 1 are stacked, the plug-in ring 3 of the upper screen cylinder 1 rests on the collar 401, thereby restricting the collar 401 from jumping up and down and affecting the stacking stability of the screen cylinders 1.

[0035] The bridge frame 402 sinks, thereby leaving room for the screen grate 9 in the upper screen drum 1 to swing up and down.

[0036] In Example 3, a plurality of elastic members 11 are evenly distributed on the inner wall of the screen drum 1. The elastic member 11 is any one of an elastic rope and a spring, and is shown as a spring in the accompanying drawings. The plurality of elastic members 11 are fixedly connected to the outer wall of the screen grate 9 to limit the shaking of the screen grate 9 and prevent the screen grate 9 from tilting in a certain direction, causing the material to gather on the cloth cover 8 and unable to be screened.

[0037] Preferably, the elastic member 11 is detachably connected to the inner wall of the screen drum 1 and the outer wall of the screen grate 9, so as to facilitate replacement of the elastic member 11 after its elasticity fails.

[0038] In embodiment 4, the upper and lower ends of the cloth cover 8 are detachably connected to the inner wall of the sieve cylinder 1 and the outer wall of the sieve grate 9 respectively. If a ring zipper is provided, the sieve grate 9 can be removed and replaced, so that the sieve grate 9 becomes a replacement part. In this way, when a part of the sieve grate 9 or the sieve cylinder 1 is damaged, the entire part will not be scrapped, saving purchase costs.

[0039] In embodiment 5, the bottom surface of the plug-in ring 3 and the surface of the insert ring 2 are both provided with magnetic sealing rings, which increase the connection tightness between the upper and lower layers of the sieve cylinders 1 and improve the stability of the sieve cylinders 1 when stacked.

[0040] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0042] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A seed screening device, characterized in that: The invention comprises a sieve cylinder (1), wherein an insertion ring (2) is provided at the upper end of the sieve cylinder (1), and a plug-in ring (3) is provided at the lower end thereof; an annular cloth sleeve (8) is embedded on the inner wall of the sieve cylinder (1); a sieve grate (9) is connected to the bottom wall of the cloth sleeve (8); a mounting frame (4) is provided inside the sieve cylinder (1); a swing ball (5) is suspended at the bottom end of the mounting frame (4) at the center of the sieve cylinder (1); a spring (10) is connected to the bottom end of the swing ball (5); and the lower end of the spring (10) is connected to the center of the surface of the sieve grate (9); It also includes an air selection system, the air selection system including a hopper (12) suspended above the screen drum (1), a conveying pipe (13) being provided at the lower end of the hopper (12), a separation pipe (14) and an air supply pipe being symmetrically connected to the side wall of the conveying pipe (13), and the air supply pipe being connected to a blower (15).

2. A seed screening device according to claim 1, characterized in that: The mounting frame (4) comprises a collar (401), a sunken bridge frame (402) is fixed to the inner wall of the collar (401), a pull rope is fixed to the center of the lower end of the bridge frame (402), and the bottom end of the pull rope is fixedly connected to the swing ball (5).

3. A seed screening device according to claim 2, characterized in that: The depth of the insertion ring (2) is equal to the sum of the height of the plug-in ring (3) and the thickness of the sleeve ring (401).

4. A seed screening device according to claim 2, characterized in that: A movable buckle (6) is fixed to the bottom end of the spring (10), and a fixed ring (7) that cooperates with the movable buckle (6) is fixed to the center of the surface of the screen grate (9).

5. A seed screening device according to claim 1, characterized in that: The inner wall of the screen cylinder (1) is evenly distributed with a plurality of elastic members (11), and the plurality of elastic members (11) are fixedly connected to the outer wall of the screen grate (9).

6. A seed screening device according to claim 5, characterized in that: The elastic member (11) is detachably connected to the inner wall of the screen cylinder (1) and the outer wall of the screen grate (9).

7. A seed screening device according to claim 1, characterized in that: The bottom surface of the plug-in ring (3) and the surface of the insertion ring (2) are both provided with magnetic sealing rings.

8. A seed screening device according to claim 1, characterized in that: The upper and lower ends of the cloth sleeve (8) are respectively sealed to the inner wall of the screen cylinder (1) and the outer wall of the screen grate (9).

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