Coarse cereal screening device
By designing a grain screening device with a rotating shaft, a cam and a brush rod, the problems of insufficient screening fineness and easy clogging of the screen holes in the existing device are solved, and efficient fine screening and anti-clogging effects are achieved.
Patent Information
- Application Number
- CN202422388964.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing grain screening device has a poor screening precision and the sieve holes are easily clogged, which affects the screening effect.
A screening device including a first screening plate and a second screening plate is designed. The vibration of the screening plate and the reciprocating motion of the brush rod are achieved by the cooperation of a rotating shaft, a cam, a pulley and a motor, thereby preventing the screen holes from being blocked and achieving fine screening.
It achieves fine screening, improves screening efficiency, prevents sieve hole clogging, and improves screening quality.
Smart Images
Figure CN223430582U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a screening device technical field, concretely is a coarse grain screening device. BACKGROUND
[0002] Coarse grain usually refers to the five crops of rice, wheat, corn, soybean and potato crops in addition to grain beans. Mainly have: sorghum, millet beans, green beans, small beans, peas, cowpea, small beans and black beans, etc. In the coarse grain processing process, the coarse grain is usually removed by a screening device.
[0003] The existing coarse grain screening device generally only screens through a layer of screen, and the screening precision is poor, which makes the coarse grain screening quality low. Moreover, the screen holes of the existing coarse grain screening device are easy to be blocked, which affects the screening effect. Therefore, the present application provides a coarse grain screening device. UTILITY MODEL CONTENT
[0004] The utility model discloses a kind of coarse grain screening devices, to solve the problem raised in the above background.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of coarse grain screening device, including screening box, the top of the screening box is provided with inlet, the inside of the screening box is separately provided with first screening plate and second screening plate, and first screening plate is located the just above of second screening plate, the lower side of the inside of the screening box is rotatably connected with shaft in first screening plate and second screening plate, and the outside of the both ends of shaft is fixed with cam, the top of first screening plate and second screening plate is provided with the brush rod for preventing screen hole from being blocked, the sidewall of the screening box is located the top of first screening plate and second screening plate respectively and is provided with first discharge port and third discharge port, and the bottom end of the sidewall of the screening box is provided with second discharge port.
[0006] Preferably, the screening box is rotatably connected with reciprocating screw rod above first screening plate and second screening plate, the outer side of reciprocating screw rod is threadedly connected with sliding block, the outer side of sliding block is fixedly connected with the fixed plate of T-shaped structure, the bottom end of fixed plate is slidably connected with brush rod, and the brush of brush rod bottom is in contact with screen plate, the top of brush rod is fixedly connected with slide rod at one end of fixed plate, and the top of slide rod is slidably connected with fixed plate, and the top of slide rod is threadedly connected with nut, and the top of brush rod is provided with first spring outside slide rod.
[0007] Preferably, the inner wall of the screening box is symmetrically provided with limit slot outside reciprocating screw rod, the top and bottom of the side, away from brush rod, of fixed plate are integrally provided with limit block, and the end of limit block is slidably connected in limit slot.
[0008] Preferably, the ends of the two reciprocating wire rods are fixedly connected with second pulleys penetrating through the screening box, the two second pulleys are connected through a belt transmission, a driving motor is fixedly installed on the side of the screening box away from the second pulleys, and the output shaft end of the driving motor extends into the screening box and is fixedly connected with the reciprocating wire rod.
[0009] Preferably, the ends of the two rotating shafts are fixedly connected with first pulleys penetrating through the screening box, the two first pulleys are connected through a belt transmission, a rotating motor is fixedly installed on the side of the screening box away from the first pulleys, and the output shaft end of the rotating motor extends into the screening box and is fixedly connected with the rotating shaft.
[0010] Preferably, the side wall of the screening box is provided with an observation window in the vertical direction.
[0011] Preferably, support rods are fixedly connected with the top of the brush rod outside the sliding rod in a symmetrical manner, and the top of the support rod slides through the fixed plate.
[0012] Preferably, fixed blocks are fixedly connected above and below the four corners of the first screening plate and the second screening plate inside the screening box, limit rods are fixedly connected between the two fixed blocks at the four corners of the first screening plate and the second screening plate, vertical sliding holes are formed in the four corners of the top of the first screening plate and the second screening plate, the limit rods are slidingly connected in the sliding holes, and second springs are sleeved outside the fixed blocks on the top of the first screening plate and the second screening plate.
[0013] Preferably, the mesh diameter of the surface of the first screening plate is larger than the mesh diameter of the surface of the second screening plate.
[0014] Compared with the prior art, the utility model has the beneficial effects that:
[0015] 1、The first screening plate and the second screening plate inside the screening box can realize fine screening, the cooperation of the rotating shaft, the cam, the first pulley and the rotating motor can continuously vibrate the first screening plate and the second screening plate in the screening process, realize rapid screening, and prevent the material from being blocked in the mesh.
[0016] 2、The brush rod movably arranged on the first screening plate and the second screening plate can prevent the mesh on the surface of the first screening plate and the second screening plate from being blocked in the screening process, realize continuous screening, and improve the screening efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a cross-sectional view structure schematic diagram of the utility model;
[0018] Figure 2 It is a whole picture structure schematic diagram of the utility model.
[0019] Figure 3 It is a cross-sectional structural diagram of the utility model;
[0020] Figure 4 It is a schematic diagram of the overall structure of the utility model;
[0021] Figure 5 This is a schematic diagram of the structure of the enlarged view of point A of the present utility model;
[0022] Figure 6 This is a schematic structural diagram of the enlarged view of point B of the present invention.
[0023] In the figure: 1. Screening box; 2. Feed port; 3. First screening plate; 4. Second screening plate; 5. Rotating shaft; 6. Cam; 7. First pulley; 8. Rotating motor; 9. Observation window; 10. Reciprocating screw; 11. Slider; 12. Fixed plate; 13. Brush rod; 14. Sliding rod; 15. First spring; 16. Support rod; 17. Second pulley; 18. Driving motor; 19. First discharge port; 20. Second discharge port; 21. Fixed block; 22. Limit rod; 23. Second spring; 24. Third discharge port. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0025] See also Figures 1-6 The utility model provides a technical solution: a grain screening device, including a screening box 1, a feeding port 2 is provided on the top of the screening box 1, a first screening plate 3 and a second screening plate 4 are respectively provided inside the screening box 1, and the first screening plate 3 is located directly above the second screening plate 4.
[0026] It should be noted that the mesh diameter on the surface of the first screening plate 3 is larger than the mesh diameter on the surface of the second screening plate 4, so that smaller grains fall to the second screening plate 4, while larger grains remain on the first screening plate 3, and the extremely small grains on the second screening plate 4 are screened and fall to the bottom of the screening box 1, thereby achieving the purpose of graded screening.
[0027] A rotating shaft 5 is rotatably connected to the bottom of the first screening plate 3 and the second screening plate 4 in the screening box 1, and a cam 6 is fixed to the outside of both ends of the rotating shaft 5. A brush rod 13 is provided on the top of the first screening plate 3 and the second screening plate 4 to prevent the sieve holes from being blocked. The side wall of the screening box 1 is respectively provided with a first discharge port 19 and a third discharge port 24 above the first screening plate 3 and the second screening plate 4, and a second discharge port 20 is provided at the bottom end of the side wall of the screening box 1.
[0028] It should be noted that when the present invention is used, the Rongguo feed port 2 of the grains to be screened is placed inside the screening box 1, and the grains entering the screening box 1 first fall on the surface of the first screening plate 3, and at the same time, the rotating motor 8 works to rotate the rotating shaft 5, and the transmission connection between the two first pulleys 7 makes the two rotating shafts 5 rotate at the same time, and the cams 6 at both ends of the rotating shaft 5 continuously hit the first screening plate 3 and the second screening plate 4, so that the grains can be quickly screened out under vibration. In this process, the driving motor 18 works, and the transmission connection between the two second pulleys 17 Next, the two reciprocating screws 10 are rotated, and the two brush rods 13 are connected to the reciprocating screw 10 through the threaded connection of the slider 11, so that the two brush rods 13 clean back and forth on the surface of the first screening plate 3 and the second screening plate 4 to prevent the mesh holes on the surface of the first screening plate 3 and the second screening plate 4 from being blocked. The surface of the first screening plate 3 screens out substances with larger particles, which can be discharged through the first discharge port 19. The surface of the second screening plate 4 screens out substances with medium particles, which are discharged through the third discharge port 24. The substances falling from the bottom layer are smaller and are discharged through the second discharge port 20, thereby realizing graded screening.
[0029] The screening box 1 is located above the first screening plate 3 and the second screening plate 4, and is rotatably connected to a reciprocating screw rod 10. The outer side of the reciprocating screw rod 10 is threadedly connected to a slider 11, and the outer side of the slider 11 is fixedly connected to a T-shaped fixed plate 12. The bottom end of the fixed plate 12 is slidably connected to a brush rod 13, and the brush at the bottom of the brush rod 13 contacts the screen plate. The top of the brush rod 13 is located at one end of the fixed plate 12 and is fixedly connected to a slide rod 14, and the top end of the slide rod 14 slides through the fixed plate 12, and the top end of the slide rod 14 is threadedly connected to a nut, and the top of the brush rod 13 is located on the outside of the slide rod 14 and is sleeved with a first spring 15.
[0030] It should be noted that when the reciprocating screw 10 on the upper part of the first screening plate 3 and the second screening plate 4 is controlled to rotate, the fixed plate 12 fixed on the slider 11 moves back and forth along the reciprocating screw 10, so that the two brush rods 13 clean the surface of the first screening plate 3 and the second screening plate 4, so that the miscellaneous grains blocked in the mesh fall off, and the slide rod 14 on the brush rod 13 is slidably set in the fixed plate 12. When the first screening plate 3 and the second screening plate 4 vibrate, the brush rod 13 can squeeze the first spring 15, and the first spring 15 acts as a buffer, enabling the brush rod 13 to better clean the surface of the first screening plate 3 and the second screening plate 4.
[0031] The inner wall of the screening box 1 is symmetrically provided with limiting grooves outside the reciprocating screw rod 10, and the top and bottom ends of the fixed plate 12 away from the brush rod 13 are integrally provided with limiting blocks, and the ends of the limiting blocks are slidably connected in the limiting grooves.
[0032] It should be noted that when the fixed plate 12 moves along the reciprocating screw 10 along with the slider 11, the end of the limit block on the fixed plate 12 is slidably connected inside the limit groove, limiting the movement range of the fixed plate 12, so that the fixed plate 12 can move smoothly.
[0033] The ends of the two reciprocating screw rods 10 are fixedly connected to the second pulley 17 through the screening box 1, and the two second pulleys 17 are connected by belt transmission. A drive motor 18 is fixedly installed on the side of the screening box 1 away from the second pulley 17, and the output shaft end of the drive motor 18 extends into the screening box 1 and is fixedly connected to the reciprocating screw rod 10.
[0034] It should be noted that the device is provided with a controller for control, which controls the operation of the drive motor 18 to rotate the reciprocating screw 10, and the transmission connection of the second pulley 17 at the end of the two reciprocating screws 10 causes the two reciprocating screws 10 to rotate simultaneously, thereby causing the two brush rods 13 to move back and forth on the first screening plate 3 and the second screening plate 4 at the same time for cleaning.
[0035] The ends of the two rotating shafts 5 pass through the screening box 1 and are fixedly connected to the first pulley 7, and the two first pulleys 7 are connected by belt transmission. A rotating motor 8 is fixedly installed on the side of the screening box 1 away from the first pulley 7, and the output shaft end of the rotating motor 8 extends into the screening box 1 and is fixedly connected to the rotating shaft 5.
[0036] It should be noted that the rotating shaft 5 is rotated by rotating the motor 8, and the two rotating shafts 5 are rotated at the same time through the transmission connection of the two first pulleys 7 at the ends of the rotating shaft 5. The cams 6 on the rotating shafts 5 rotate accordingly, and the cams 6 on the two rotating shafts 5 hit the first screening plate 3 and the second screening plate 4 respectively, thereby speeding up the screening process.
[0037] The side wall of the screening box 1 is provided with an observation window 9 along the vertical direction.
[0038] It should be noted that the setting of the observation window 9 can observe the screening situation at any time.
[0039] The top of the brush rod 13 is located outside the sliding rod 14 and is symmetrically fixedly connected to the support rod 16, and the top of the support rod 16 slides through the fixing plate 12.
[0040] It should be noted that the provision of the support rod 16 can enhance the stability of the connection of the brush rod 13 .
[0041] Inside the screening box 1, fixed blocks 21 are fixedly connected above and below the four corners of the first screening plate 3 and the second screening plate 4, and limiting rods 22 are fixedly connected between the two fixed blocks 21 at the four corners of the first screening plate 3 and the second screening plate 4. Vertical sliding holes are opened at the four corners of the top of the first screening plate 3 and the second screening plate 4, and the limiting rods 22 are slidably connected in the sliding holes. The top of the first screening plate 3 and the second screening plate 4 are located on the outside of the fixed block 21 and are both sleeved with a second spring 23.
[0042] It should be noted that when the grains inside the screening box 1 are screened, the cams 6 on the two rotating shafts 5 hit the first screening plate 3 and the second screening plate 4 respectively, causing the first screening plate 3 and the second screening plate 4 to move slightly upward, and the second spring 23 is compressed. As the cam 6 rotates, the second spring 23 is reset, causing the first screening plate 3 and the second screening plate 4 to reset, and the first screening plate 3 and the second screening plate 4 vibrate back and forth up and down, which speeds up the screening process and avoids the screening mesh from being blocked.
[0043] The mesh diameter on the surface of the first screening plate 3 is larger than the mesh diameter on the surface of the second screening plate 4 .
[0044] It should be noted that the mesh diameter on the surface of the first screening plate 3 is larger than the mesh diameter on the surface of the second screening plate 4, which can achieve the purpose of fine screening.
[0045] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0046] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.
[0047] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.
[0048] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A grain screening device, characterized in that: The invention comprises a screening box (1), wherein a feed port (2) is provided at the top of the screening box (1), a first screening plate (3) and a second screening plate (4) are respectively provided inside the screening box (1), and the first screening plate (3) is located directly above the second screening plate (4), a rotating shaft (5) is rotatably connected below the first screening plate (3) and the second screening plate (4) in the screening box (1), and a cam (6) is fixed on the outer side of each end of the rotating shaft (5), a brush rod (13) for preventing the sieve holes from being blocked is provided at the top of the first screening plate (3) and the second screening plate (4), a first discharge port (19) and a third discharge port (24) are respectively provided on the side wall of the screening box (1) above the first screening plate (3) and the second screening plate (4), and a second discharge port (20) is provided at the bottom end of the side wall of the screening box (1).
2. A grain screening device according to claim 1, characterized in that: The screening box (1) is located above the first screening plate (3) and the second screening plate (4) and is rotatably connected to a reciprocating screw rod (10). The outer side of the reciprocating screw rod (10) is threadedly connected to a slider (11). The outer side of the slider (11) is fixedly connected to a fixed plate (12) of a T-shaped structure. The bottom end of the fixed plate (12) is slidably connected to a brush rod (13), and the brush at the bottom of the brush rod (13) contacts the screen plate. The top of the brush rod (13) is located at one end of the fixed plate (12) and is fixedly connected to a slide rod (14). The top end of the slide rod (14) slides through the fixed plate (12), and the top end of the slide rod (14) is threadedly connected to a nut. The top of the brush rod (13) is located on the outer side of the slide rod (14) and is sleeved with a first spring (15).
3. A grain screening device according to claim 2, characterized in that: The inner wall of the screening box (1) is symmetrically provided with a limiting groove outside the reciprocating screw rod (10), and the top and bottom ends of the fixed plate (12) away from the brush rod (13) are integrally provided with limiting blocks, and the ends of the limiting blocks are slidably connected in the limiting groove.
4. A grain screening device according to claim 3, characterized in that: The ends of the two reciprocating screw rods (10) pass through the screening box (1) and are fixedly connected to the second pulley (17), and the two second pulleys (17) are connected by a belt transmission. A drive motor (18) is fixedly installed on the side of the screening box (1) away from the second pulley (17), and the output shaft end of the drive motor (18) extends into the screening box (1) and is fixedly connected to the reciprocating screw rod (10).
5. The grain screening device according to claim 1, characterized in that: The ends of the two rotating shafts (5) pass through the screening box (1) and are fixedly connected to the first pulley (7), and the two first pulleys (7) are connected by a belt transmission. A rotating motor (8) is fixedly installed on the side of the screening box (1) away from the first pulley (7), and the output shaft end of the rotating motor (8) extends into the screening box (1) and is fixedly connected to the rotating shaft (5).
6. The grain screening device according to claim 1, characterized in that: The side wall of the screening box (1) is provided with an observation window (9) in the vertical direction.
7. The grain screening device according to claim 2, characterized in that: The top of the brush rod (13) is located outside the sliding rod (14) and is symmetrically fixedly connected to a support rod (16), and the top of the support rod (16) slides through the fixed plate (12).
8. The grain screening device according to claim 1, characterized in that: The screening box (1) is internally provided with fixed blocks (21) located above and below the four corners of the first screening plate (3) and the second screening plate (4), and a limiting rod (22) is fixedly connected between the two fixing blocks (21) at the four corners of the first screening plate (3) and the second screening plate (4), and vertical sliding holes are provided at the four corners of the top of the first screening plate (3) and the second screening plate (4), and the limiting rod (22) is slidably connected in the sliding holes, and the top of the first screening plate (3) and the second screening plate (4) are both provided with a second spring (23) on the outside of the fixing block (21).
9. The grain screening device according to claim 1, characterized in that: The mesh diameter on the surface of the first screening plate (3) is larger than the mesh diameter on the surface of the second screening plate (4).