Seed screening device

Abstract

The utility model discloses a seed screening device which comprises a screening machine, the bottom end of the screening machine is connected with a vibration base, a metal screen is arranged in the vibration base, a feeding port is fixed to the top of one end of the screening machine, and a discharging port is fixed to an opening of the other end of the screening machine. Through the designed push plate, the cleaning brush, the screw hole, the push bolt and the push bearing, impurities can be effectively cleaned and prevented from being accumulated on the screen to block screen holes, the air permeability and the screen permeability of the screen are ensured, seeds or other materials can smoothly pass through the screen, meanwhile, the designed electric push rod is matched, and the cleaning effect is good. Movement of the brush can be accurately controlled, the brush can completely cover the surface of the screen and go deep into screen holes in a reciprocating motion mode, impurities such as dust, chippings and fibers attached to the screen are effectively removed, the cleanliness of the screen is remarkably improved, and the screening efficiency is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of seed screening devices, and specifically relates to a seed screening device. Background Technology

[0002] Seed sorting devices are mechanical devices used to separate and grade seeds, and are widely used in agriculture, horticulture, seed processing and other industries. Their core function is to sort seeds based on their physical characteristics (such as size, shape, weight, density, etc.), removing impurities, damaged seeds, foreign objects, etc., to obtain high-quality, uniform seeds, thereby improving sowing efficiency and crop yield.

[0003] When existing seed vibrating screening machines are in use, the seeds often have dust, impurities, and some sticky substances on their surface. During the screening process, these substances easily adhere to the screen mesh, causing the screen holes to become clogged. Because there is no self-cleaning mechanism to clean the screen mesh in time, when the screen holes are clogged, some smaller seeds may not be able to pass through the screen holes smoothly, while some larger impurities may get stuck in the screen holes. This causes some impurities to be mixed into qualified seeds, or some qualified seeds to be mistakenly judged as impurities and rejected, thereby reducing the accuracy and quality of screening. Moreover, the screen hole clogging will become more and more serious, thus affecting the screening efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a seed screening device to solve the problem mentioned in the background art that the screen of the seed vibration screening machine does not have a self-cleaning mechanism.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a seed screening device, including a screening machine, a vibrating base connected to the bottom of the screening machine, a metal screen inside the vibrating base, a feed inlet fixed to the top of one end of the screening machine, a discharge outlet fixed to the opening at the other end of the screening machine, a screen anti-clogging mechanism inside the screening machine, and a discharge metal magnetic attraction mechanism fixed inside the discharge outlet. The screen anti-clogging mechanism includes an adjustable cleaning component and a motor push rod component.

[0006] Preferably, the adjustable cleaning assembly includes a push plate disposed inside the screening machine relative to the top of the vibrating base and a cleaning brush disposed inside the bottom of the push plate.

[0007] Preferably, the bottom end of the push plate is symmetrically provided with sliding grooves, and the two sides of the cleaning brush are symmetrically fixed with sliders, which are slidably connected to the sliding grooves.

[0008] Preferably, the top end of the push plate has a through screw hole, and the top end of the push plate is provided with a push bolt that is screwed into the screw hole. The bottom end of the push bolt is connected to the top end of the cleaning brush with a push bearing.

[0009] Preferably, the motor push rod assembly includes a guide groove extending through one side of the push plate and a guide rail fixed inside the screening machine, wherein the guide rail is slidably connected to the guide groove.

[0010] Preferably, a bearing seat is fixed on the other side of the other end of the screening machine, and a transmission bearing is symmetrically fixed at the end of the bearing seat. A lead screw nut is fixed through the other side of the push plate. A fixed bearing is fixed inside the other side of the screening machine. A lead screw is provided inside the lead screw nut, with its two ends respectively connected to one of the transmission bearings and the fixed bearing. A geared motor connected to another transmission bearing is fixed outside the other side of the screening machine. A transmission belt is sleeved on the surface of the transmission bearing.

[0011] Preferably, the discharge metal magnetic suction mechanism includes a magnetic suction plate fixed inside the discharge port.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model, through its designed push plate, cleaning brush, screw holes, push bolts, and push bearings, effectively cleans and prevents impurities from accumulating on the screen and causing screen hole blockage, ensuring the screen's air permeability and screening ability, allowing seeds or other materials to pass smoothly through the screen. Simultaneously, the designed electric push rod precisely controls the movement of the brush; the reciprocating motion allows the brush to fully cover the screen surface and penetrate deep into the screen holes, effectively removing dust, debris, fibers, and other impurities adhering to the screen, significantly improving screen cleanliness and ensuring screening efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the cleaning brush structure of this utility model;

[0016] Figure 3 In this utility model Figure 2 Enlarged view of point A;

[0017] Figure 4 In this utility model Figure 1 Enlarged view of point B;

[0018] In the diagram: 1. Screening machine; 2. Vibrating base; 3. Metal screen; 4. Feed inlet; 5. Discharge outlet; 100. Push plate; 101. Cleaning brush; 200. Slide groove; 201. Sliding block; 300. Screw hole; 301. Push bolt; 302. Push bearing; 400. Guide groove; 401. Guide rail rod; 500. Bearing seat; 501. Transmission bearing; 502. Lead screw nut; 503. Fixed bearing; 504. Lead screw; 505. Gear motor; 506. Transmission belt; 600. Magnetic suction plate. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1 to 4 This utility model provides a technical solution: a seed screening device, including a screening machine 1, a vibrating base 2 connected to the bottom of the screening machine 1, a metal screen 3 inside the vibrating base 2, a feed inlet 4 fixed to the top of one end of the screening machine 1, a discharge outlet 5 fixed to the opening at the other end of the screening machine 1, a screen anti-clogging mechanism inside the screening machine 1, and a discharge metal magnetic attraction mechanism fixed inside the discharge outlet 5. The screen anti-clogging mechanism includes: an adjustable cleaning component and a motor push rod component.

[0021] In this embodiment, preferably, the adjustable cleaning component includes a push plate 100 disposed inside the screening machine 1 relative to the top of the vibrating base 2 and a cleaning brush 101 disposed inside the bottom of the push plate 100, which can clean the metal screen 3.

[0022] In this embodiment, preferably, the bottom end of the push plate 100 is symmetrically provided with a sliding groove 200, and the two sides of the cleaning brush 101 are symmetrically fixed with sliders 201, and the sliders 201 are slidably connected to the sliding grooves 200.

[0023] In this embodiment, preferably, the top end of the push plate 100 is provided with a screw hole 300, and the top end of the push plate 100 is provided with a push bolt 301 that is screwed into the screw hole 300. The bottom end of the push bolt 301 is connected to the top end of the cleaning brush 101 with a push bearing 302, which can adjust the distance between the cleaning brush 101 and the metal screen 3.

[0024] In this embodiment, preferably, the motor push rod assembly includes a guide groove 400 that passes through one side of the push plate 100 and a guide rail rod 401 that is fixed inside the screening machine 1. The guide rail rod 401 is slidably connected to the guide groove 400 and can play a guiding role.

[0025] In this embodiment, preferably, a bearing seat 500 is fixed on the other side of the other end of the screening machine 1, and a transmission bearing 501 is symmetrically fixed at the end of the bearing seat 500. A lead screw nut 502 is fixed through the other side of the push plate 100. A fixed bearing 503 is fixed inside the other side of the screening machine 1. A lead screw 504 is provided inside the lead screw nut 502, with its two ends respectively connected to one of the transmission bearings 501 and the fixed bearing 503. A reduction motor 505 connected to another transmission bearing 501 is fixed outside the other side of the screening machine 1. A transmission belt 506 is sleeved on the surface of the transmission bearing 501. The electric push rod drives the brush to reciprocate, and with its stable power output and flexible movement, it can remove impurities from the screen.

[0026] In this embodiment, preferably, the discharge metal magnetic attraction mechanism includes a magnetic suction plate 600 fixed inside the discharge port 5, which can adsorb metal fragments mixed in with the sieved seeds.

[0027] The working principle and usage process of this utility model are as follows: When dust, mucus, etc., adhere to the surface of the seeds and cause blockage of the sieve holes, first, the push bolt 301 is tightened to rotate inside the screw hole 300. This, in turn, pushes the cleaning brush 101 downward from inside the push plate 100 via the push bearing 302. Simultaneously, the slider 201 slides inside the groove 200, acting as a guide. This allows the brush head of the cleaning brush 101 to come into contact with the vibrating base 2. Next, the reduction motor 505 is started, causing another transmission bearing 501 on the surface of the bearing seat 500 to rotate forward. This rotation is achieved via the transmission belt 506, which in turn drives one of the transmission bearings 501 to rotate. Simultaneously, the rotation of this transmission bearing 501 causes the lead screw 504 to rotate inside the fixed bearing 503. The push plate 100 can be moved to the right by the lead screw nut 502. While the push plate 100 is moving, it slides on the surface of the guide rail 401 through the guide groove 400, which can guide the push plate 100 to move steadily. During the movement of the push plate 100, it can drive the cleaning brush 101 to clean the dust, mucus or seeds stuck in the screen holes on the surface of the vibrating base 2, so as to ensure the smoothness of the screen holes of the vibrating base 2. When the push plate 100 reaches the end point on one side, the reduction motor 505 can be started to reverse, which can drive the push plate 100 to move back and forth, so as to ensure that the cleaning brush 101 cleans back and forth. When the screened seeds are discharged through the discharge port 5, the magnetic suction plate 600 can adsorb the metal debris mixed in the screened seeds to achieve the filtering effect.

[0028] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A seed screening device, comprising a screening machine (1), wherein a vibrating base (2) is connected to the bottom end of the screening machine (1), a metal screen (3) is provided inside the vibrating base (2), a feed inlet (4) is fixed at the top of one end of the screening machine (1), and a discharge outlet (5) is fixed at the opening of the other end of the screening machine (1), characterized in that: The inside of the screening machine (1) is provided with a screen anti-blocking mechanism, the inside of the discharge port (5) is fixed with a discharge metal magnetic attraction mechanism, the screen anti-blocking mechanism comprises an adjustable cleaning assembly and a motor push rod assembly.

2. A seed screening device according to claim 1, characterised in that: The adjustable cleaning assembly comprises a push plate (100) arranged at the top end of the vibrating base (2) in the inside of the screening machine (1) and a cleaning brush (101) arranged in the inside of the bottom end of the push plate (100).

3. A seed screening device according to claim 2, wherein: The bottom end of the push plate (100) is symmetrically provided with a sliding groove (200), and the cleaning brush (101) is symmetrically fixed with a sliding block (201) on both sides.

4. A seed screening apparatus according to claim 3, wherein: The top end of the push plate (100) is provided with a screw hole (300), and the top end of the push plate (100) is provided with a push bolt (301) screwed with the screw hole (300), and the bottom end of the push bolt (301) is connected with a push bearing (302) at the top end of the cleaning brush (101).

5. A seed screening apparatus according to claim 4, wherein: The motor push rod assembly comprises a guide groove (400) penetratingly arranged on one side of the push plate (100) and a guide rail (401) fixed on one side in the inside of the screening machine (1), and the guide rail (401) is in sliding connection with the guide groove (400).

6. A seed screening apparatus according to claim 5, wherein: The other side of the other end of the screening machine (1) is fixed with a bearing seat (500), the end of the bearing seat (500) is symmetrically fixed with a transmission bearing (501), the other side of the push plate (100) is fixed with a screw rod nut (502), the other side of the inside of the screening machine (1) is fixed with a fixed bearing (503), the inside of the screw rod nut (502) is provided with a screw rod (504) connected with one of the transmission bearings (501) and the fixed bearing (503) at both ends, the other side of the outside of the screening machine (1) is fixed with a speed reduction motor (505) connected with the other transmission bearing (501), and the surface of the transmission bearing (501) is provided with a transmission belt (506).

7. The seed screening device of claim 1, wherein: The discharge metal magnetic attraction mechanism comprises a magnetic attraction plate (600) fixed in the inside of the discharge port (5).

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