Semi-hand-woven light and durable high-pressure grain grading screen

Abstract

The utility model relates to the field of grain grading screens, in particular to a semi-hand-woven light durable high-pressure grain grading screen which comprises a mounting frame, a connecting frame is connected to the right side of the mounting frame in a bolting mode, mounting plates are connected to the front side and the rear side of the top of the connecting frame in a bolting mode, and sliding rods are connected to the inner sides of the mounting plates in a bolting mode. Through the mounting frame, the fine material screen, the coarse material screen, the air inlet pipe, the partition plate and the like, before grains are screened, the centrifugal fan assembly is connected with the air inlet pipe, so that the air inlet pipe can transmit wind power to the upper part of the screen through the screen openings of the fine material screen and the coarse material screen, the wind power above the fine material screen is smaller, and the fine material screen can be separated from the coarse material screen. Wizened grains can penetrate through the screen, fall to the lower portion and are discharged through the fine material discharging port, the wind force of one side of the coarse material screen is larger than that of one side of the fine material screen, and wizened, fragile and light-specific-gravity diseased grains are pushed by the wind force, cannot be screened from the coarse material screen and are discharged from the left side of the mounting frame.

Description

Technical Field

[0001] The utility model relates to the field of grain grading screens, in particular to a semi-manually woven, light, durable, high-pressure and strong grain grading screen. Background Art

[0002] The production of Fusarium toxins in the field is mainly affected by meteorological conditions, including temperature, humidity, drought, precipitation, etc. When wheat encounters cold and wet weather during the flowering and heading period, Fusarium fusarium will become prevalent, and the diseased ear rate in epidemic years can reach 5% to 15%; the occurrence of insect pests will promote the spread of Fusarium fusarium and aggravate the severity of wheat fusarium fusarium and corn ear rot; in addition, the terrain can also affect the production of Fusarium toxins. For example, the difference between mountain tops and depressions leads to uneven spatial distribution of soil moisture and air humidity. Humidity is an important factor affecting the production of Fusarium toxins on ears of grain, and this influence has been confirmed by research.

[0003] Deoxynivalenol, chemical name 3a,7a,15-trihydroxy-12,13-epoxy-monocene-9-en-8-one, belongs to the B-type monothene compound, is widely distributed in nature, and is a fungal toxin that is extremely harmful to human and animal health. DON toxin enters food and feed through contaminated wheat, barley, corn and other raw materials. After poultry eats contaminated feed, a small amount of DON toxin enters milk, meat and eggs, which indirectly affects human health. After humans and animals ingest food contaminated by DON, they will suffer from acute poisoning symptoms such as anorexia, vomiting, diarrhea, fever, unsteady standing and slow reaction. In severe cases, it will cause necrosis of bone marrow tissue and bleeding of internal organs, infertility or miscarriage of female animals, and death.

[0004] After searching, a simple grain screening device with publication number CN201920895070.6 was found, which specifically disclosed a screen, two groups of cam shaking components, and two groups of screen hangers. The two groups of screen hangers are placed on both sides of the screen, and are connected to the side walls of the screen through elastic connecting ropes to suspend the screen; each group of cam shaking components includes a bracket, a drive motor, a cam connected to the drive motor shaft, a limit platform horizontally fixed to the bracket, a slide bar, and a spring. It simulates the action of manually operating the screen to remove impurities and dust from the grain. The utility model has a simple and reasonable structure, is easy to produce and manufacture, and has a broad market space.

[0005] However, the above-mentioned device is still unable to effectively screen out and detect virus-infected grains. Although the multi-stage screening device can effectively screen the diseased grains, the device has a complex structure, high difficulty in operation, occupies a large area, and has a high cost of use. It has limited practicality for fungi and toxins that are widely present in grains and feed.

[0006] Therefore, it is necessary to invent a semi-manually woven, lightweight, durable, high-pressure, strong grain grading screen to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide a semi-manually woven, lightweight, durable, high-pressure, strong grain grading screen, which can achieve the effect of quickly and effectively screening and checking diseased grains by installing components such as a frame, a fine material screen, a coarse material screen, an air inlet pipe, a partition plate, etc., so as to solve the problem that the existing technology cannot effectively screen and check grains infected by viruses.

[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a semi-manually woven, lightweight, durable, high-pressure, strong grain grading screen, comprising a mounting frame, a connecting frame is bolted to the right side of the mounting frame, mounting plates are bolted to the front and rear sides of the top of the connecting frame, sliding rods are bolted to the inner sides of the mounting plates, sliding blocks are slidably connected to the surface of the sliding rods, springs are sleeved on both sides of the surface of the sliding rods, a U-shaped frame is bolted to the inner side of the sliding block, a first sub-screen is bolted to the inner side of the U-shaped frame, blocks are bolted to the front and rear of the left side of the U-shaped frame, a fine material screen is bolted to the right side of the inner side of the inner cavity of the mounting frame, a coarse material screen is bolted to the left side of the inner side of the inner cavity of the mounting frame, and air inlet pipes are arranged and connected around the bottom of the mounting frame.

[0009] Preferably, fixed plates are bolted to the front and rear of the top of the connecting frame, and the inner side of the fixed plate is rotatably connected to a rotating rod through a bearing. Cams are bolted to both sides of the surface of the rotating rod, so that the fixed plate can mount and fix the rotating rod and the connecting frame to each other. The rotating rod will drive the cam to rotate synchronously during the rotation process, so that the rotating rod and the cam act as a linkage component to push the U-shaped frame to shake horizontally.

[0010] Preferably, a servo motor is bolted to the front of the fixed plate, and the front of the rotating rod passes through the fixed plate and is bolted to the output end of the servo motor, so that the servo motor serves as a driving source and drives the cam to rotate through the rotating rod after being turned on.

[0011] Preferably, a waste channel is provided on the right side of the U-shaped frame, and a secondary screen opening is provided on the inner side of the connecting frame, so that larger debris such as grain residue or straw screened out on the first sub-screen can be discharged through the waste channel.

[0012] Preferably, a folding buffer plate is bolted on the top of the fine material screen. After the first sub-screen in the connecting frame performs preliminary screening on the grain, the grain slides down to the top of the fine material screen. Since the overall structure of the mounting frame is tilted toward the lower left corner, the grain will be blocked and buffered by the folding buffer plate during its sliding down on the fine material screen, thereby reducing the speed at which the grain slides down the fine material screen, thereby improving the screening accuracy of the fine material screen and avoiding the occurrence of wrong screening or missed screening.

[0013] Preferably, a diverter plate is bolted to the top of the coarse material screen so that after the grain flows to the top of the coarse material screen, it is guided by the diverter plate and evenly distributed on the top of the coarse material screen to avoid accumulation in one place, which may cause the screen opening to be blocked and the material cannot be discharged during screening.

[0014] Preferably, a top plate is bolted to the top of the U-shaped frame, and a feed hopper is connected to the center of the top of the top plate, so that the user can pour the grain to be screened into the top of the first screen through the feed hopper.

[0015] Preferably, a partition plate is bolted to the bottom of the inner cavity of the mounting frame, and the space below the coarse material screen and the fine material screen inside the mounting frame is separated by the partition plate.

[0016] Preferably, a coarse material discharge port is opened on the left side of the bottom of the installation frame, and a fine material discharge port is opened on the right side of the bottom of the installation frame. The coarse material discharge port is for qualified grains with full grains, while the fine material discharge port is for grain particles with shriveled surface and lighter specific gravity. The materials are discharged through the separate ports to avoid the two being mixed together again after screening is completed.

[0017] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0018] 1. By installing the frame, connecting frame, mounting plate, sliding rod, slider, spring and other components, after the grain is poured onto the first sub-screen through the feed hopper, since the mesh opening of the first sub-screen is slightly larger than the grain specification to be screened, the motor, rotating rod and cam are used to make the surface of the first sub-screen vibrate continuously, which can speed up the first sub-screen to screen grain and debris, and avoid the situation where the debris is stuck on the inner side of the sub-screen, resulting in the mesh opening being blocked and unable to discharge the material, thereby improving the screening efficiency of the grading screen;

[0019] 2. By installing the frame, fine material screen, coarse material screen, air inlet pipe, partition plate and other components, before screening the grain, first connect the centrifugal fan assembly to the air inlet pipe, so that the air inlet pipe can transmit the wind to the upper part of the screen through the mesh openings of the fine material screen and the coarse material screen. The wind force above the fine material screen is smaller, and the shriveled grain can pass through the screen, fall to the lower part and be discharged through the fine material discharge port. The wind force on one side of the coarse material screen is greater than that on the other side of the fine material screen. The shriveled, fragile and light-gravity diseased grain is pushed by the wind and cannot be screened through the coarse material screen, and is discharged from the left slot of the installation frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a front view of the overall structure of the utility model;

[0022] Figure 2 This is a cross-sectional view of the internal connection structure of the connection frame of the utility model;

[0023] Figure 3 It is a bottom view of the internal connection structure of the installation frame and the connection frame of the utility model;

[0024] Figure 4 It is a top view of the internal connection structure of the installation frame of the utility model;

[0025] Figure 5 It is a side view of the connection structure of the coarse material screen and the fine material screen of the utility model.

[0026] Description of reference numerals:

[0027] 1. Mounting frame; 2. Connecting frame; 3. Mounting plate; 4. Slide bar; 5. Sliding block; 6. Spring; 7. U-shaped frame; 8. First sub-screen; 9. Stop block; 10. Fine material screen; 11. Coarse material screen; 12. Air inlet pipe; 13. Fixed plate; 14. Rotating rod; 15. Cam; 16. Servo motor; 17. Waste material channel; 18. Secondary screen opening; 19. Folding buffer plate; 20. Diverter plate; 21. Top plate; 22. Feed hopper; 23. Partition plate; 24. Coarse material discharge port; 25. Fine material discharge port. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] The utility model provides Figure 1-5 A semi-manually woven, lightweight, durable, high-pressure, strong grain grading screen is shown, comprising a mounting frame 1, a connecting frame 2 is bolted to the right side of the mounting frame 1, mounting plates 3 are bolted to the front and rear sides of the top of the connecting frame 2, sliding rods 4 are bolted to the inner sides of the mounting plates 3, sliding blocks 5 are slidably connected to the surface of the sliding rod 4, springs 6 are sleeved on both sides of the surface of the sliding rod 4, a U-shaped frame 7 is bolted to the inner side of the sliding block 5, a first sub-screen 8 is bolted to the inner side of the U-shaped frame 7, and blocks 9 are bolted to the front and rear of the left side of the U-shaped frame 7, a fine material screen 10 is bolted to the right side of the inner side of the inner cavity of the mounting frame 1, a coarse material screen 11 is bolted to the left side of the inner side of the inner cavity of the mounting frame 1, and air inlet pipes 12 are arranged and connected around the bottom of the mounting frame 1.

[0030] A fixing plate 13 is bolted to the front and back of the top of the connecting frame 2, and a rotating rod 14 is rotatably connected to the inner side of the fixing plate 13 through a bearing. Cams 15 are bolted to both sides of the surface of the rotating rod 14, so that the fixing plate 13 can fix the rotating rod 14 and the connecting frame 2 to each other. The rotating rod 14 will drive the cam 15 to rotate synchronously during the rotation process, so that the rotating rod 14 and the cam 15 as a linkage component push the U-shaped frame 7 to shake horizontally.

[0031] A servo motor 16 is bolted to the front of the fixed plate 13 , and the front of the rotating rod 14 passes through the fixed plate 13 and is bolted to the output end of the servo motor 16 , so that the servo motor 16 serves as a driving source and drives the cam 15 to rotate through the rotating rod 14 after being turned on.

[0032] A waste channel 17 is provided on the right side of the U-shaped frame 7 , and a secondary screen opening 18 is provided on the inner side of the connecting frame 2 , so that larger debris such as grain residue or straw screened out on the first sub-screen 8 can be discharged through the waste channel 17 .

[0033] A folding buffer plate 19 is bolted to the top of the fine material screen 10. After the first sub-screen 8 in the connecting frame 2 performs preliminary screening on the grain, the grain slides down to the top of the fine material screen 10. Since the overall structure of the mounting frame 1 is tilted toward the lower left corner, the grain will be blocked and buffered by the folding buffer plate 19 while sliding down on the fine material screen 10, thereby reducing the speed at which the grain slides down from the fine material screen 10, thereby improving the screening accuracy of the fine material screen 10 and avoiding the occurrence of wrong screening or missed screening.

[0034] A diverter plate 20 is bolted to the top of the coarse material screen 11, so that after the grain flows to the top of the coarse material screen 11, it is guided by the diverter plate 20 and evenly distributed on the top of the coarse material screen 11 to avoid accumulation in one place, resulting in blockage of the screen mesh and inability to discharge grain during screening.

[0035] A top plate 21 is bolted to the top of the U-shaped frame 7 , and a feed hopper 22 is connected to the center of the top of the top plate 21 , so that the user can pour the grain to be screened into the top of the first screen 8 through the feed hopper 22 .

[0036] A partition plate 23 is bolted to the bottom of the inner cavity of the mounting frame 1 , and the partition plate 23 separates the space below the coarse material screen 11 and the fine material screen 10 inside the mounting frame 1 .

[0037] A coarse material discharge port 24 is provided on the left side of the bottom of the installation frame 1, and a fine material discharge port 25 is provided on the right side of the bottom of the installation frame 1. The coarse material discharge port 24 is for qualified grains with full grains, while the fine material discharge port 25 is for grain particles with shriveled surface and lighter specific gravity. The materials are discharged through the separate ports to avoid the two being mixed together again after screening is completed.

[0038] Refer to the instruction manual Figure 1-5Working principle: When the device is used, the grain to be screened is first poured into the inner cavity of the connecting frame 2 through the feed hopper 22, and falls to the top of the first sub-screen 8, and then the servo motor 16 is turned on to drive the rotating rod 14 and the cam 15 to rotate. When the protruding part of the cam 15 rotates toward one side of the U-shaped frame 7, it will squeeze the U-shaped frame 7 to the right through the block 9, so that the U-shaped frame 7 slides horizontally axially on the surface of the slide bar 4 through the slider 5. In this process, the slider 5 squeezes the springs 6 on both sides of the slide bar 4. When the protruding part of the cam 15 rotates to the other end, the spring 6 is The rebound slider 5 moves to the other end, reciprocating, generating vibration on the surface of the first sub-screen 8 to assist in screening the grain, and the screened grain will fall into the inner cavity of the mounting frame 1 until the top of the fine material screen 10. After the air inlet pipe 12 is ventilated, the grain with shriveled and lighter particles will fall from the fine material screen 10, and the remaining qualified grain will flow to the upper part of the coarse material screen 11. The qualified grain will pass through the coarse material screen 11 to complete the screening operation, which can screen out grain particles with soil common Fusarium and vomitoxin while precipitating water, reducing the incidence of gastrointestinal diseases and cancer.

[0039] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A semi-manually woven, lightweight, durable, high-pressure, strong grain grading screen, comprising a mounting frame (1), characterized in that: The right side of the mounting frame (1) is bolted to a connecting frame (2), the front and rear sides of the top of the connecting frame (2) are bolted to mounting plates (3), the inner sides of the mounting plates (3) are bolted to sliding rods (4), the surfaces of the sliding rods (4) are slidably connected to sliders (5), the surfaces of the sliding rods (4) are sleeved with springs (6), the inner sides of the sliders (5) are bolted to a U-shaped frame (7), the inner sides of the U-shaped frame (7) are bolted to a first sub-screen (8), the left sides of the U-shaped frame (7) are bolted to stoppers (9), the right side of the inner side of the inner cavity of the mounting frame (1) is bolted to a fine material screen (10), the left side of the inner cavity of the mounting frame (1) is bolted to a coarse material screen (11), and the bottom of the mounting frame (1) is connected to air inlet pipes (12) arranged around the bottom.

2. According to claim 1, a semi-manually woven, light and durable high-pressure grain grading screen is characterized by: The front and rear of the top of the connection frame (2) are both bolted with fixing plates (13), the inner side of the fixing plate (13) is rotatably connected to a rotating rod (14) via a bearing, and cams (15) are bolted on both sides of the surface of the rotating rod (14).

3. The semi-manually woven, light and durable high-pressure grain grading screen according to claim 2 is characterized by: A servo motor (16) is bolted to the front of the fixed plate (13), and the front of the rotating rod (14) passes through the fixed plate (13) and is bolted to the output end of the servo motor (16).

4. The semi-manually woven, light and durable high-pressure grain grading screen according to claim 1 is characterized by: A waste material passage (17) is provided on the right side of the U-shaped frame (7), and a secondary screening opening (18) is provided on the inner side of the connecting frame (2).

5. The semi-manually woven, light and durable high-pressure grain grading screen according to claim 1 is characterized by: A folding buffer plate (19) is bolted to the top of the fine material screen (10).

6. The semi-manually woven, light and durable high-pressure grain grading screen according to claim 1 is characterized by: A diverter plate (20) is bolted to the top of the coarse material screen (11).

7. The semi-manually woven, light and durable high-pressure grain grading screen according to claim 1 is characterized by: A top plate (21) is bolted to the top of the U-shaped frame (7), and a feed hopper (22) is connected to the center of the top of the top plate (21).

8. The semi-manually woven, light and durable high-pressure grain grading screen according to claim 1 is characterized by: A partition plate (23) is bolted to the bottom of the inner cavity of the installation frame (1).

9. The semi-manually woven, light and durable high-pressure grain grading screen according to claim 1, characterized in that: A coarse material discharge port (24) is provided on the left side of the bottom of the installation frame (1), and a fine material discharge port (25) is provided on the right side of the bottom of the installation frame (1).

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