A grain quantitative screening device

Abstract

The invention discloses a grain quantitative screening device, comprising a transmission box, a plurality of welding plates are installed on the side wall of the transmission box, and support legs are welded on the inner wall of the welding plates, a metal frame is fixedly connected to the top of the support legs, a mounting frame is fixedly clamped between the support legs, and a blocking frame is movably provided on the top of the metal frame, the blocking frame is movably inserted between the metal frame and the bottom of the transmission box, the blocking frame is made of metal material and a plurality of sponge plates are fixedly connected on the inner wall, a fixed cover is installed on the surface of the transmission box, and a feed hopper is connected to the top of the fixed cover; compared with the prior art, when the grains enter the feed hopper through the present invention, the grains can fall on the blocking plate, and the elastic shaft can be deformed under the action of gravity, so that the blocking plate can swing, the grains can be quickly processed, and the grains can be jittered during the transmission process, so as to avoid the internal agglomeration due to water vapor and the like, and reduce the internal blockage.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural product processing, in particular to a grain quantitative screening device. Background Art

[0002] As a traditional Chinese diet, cereals occupy an important position in our country's diet and are regarded as a traditional staple food. Cereals include rice, wheat, millet, soybeans, etc. They are mainly seeds and fruits and are the traditional staple food of many Asian people.

[0003] Grains not only need to be dried, but also need to be cleaned and screened to remove dust, iron filings, rice husks, straw, etc. mixed in the grains, until finally the grains without impurities can be stored in the granary. In the screening process, the grains are generally filtered and screened through a vibrating screen, but the long-term activity of the sieve plate will cause the surface of the sieve plate to be subject to greater friction, causing the paint on the surface to fall off easily and mix into the grains during the screening process. In addition, there will be large dust and dust flying during the screening process, affecting the overall working environment. For this reason, we propose a grain quantitative screening equipment to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a grain quantitative screening device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a grain quantitative screening device, comprising a transmission box, a plurality of welding plates are installed on the side wall of the transmission box, and support legs are welded on the inner wall of the welding plates, a metal frame is fixedly connected to the top of the support leg, a mounting frame is fixedly clamped between the support legs, and a blocking frame is movably provided on the top of the metal frame, the blocking frame is movably inserted between the metal frame and the bottom of the transmission box, the blocking frame is made of metal and a plurality of sponge plates are fixedly connected to the inner wall;

[0006] A fixed cover is installed on the surface of the transmission box, a feed hopper is connected to the top of the fixed cover, a transmission motor is installed on the surface of the fixed cover, and a fixed plate is fixedly connected to the inner wall of the transmission box. When the grains need to be screened, the grains after drying can be poured from the feed hopper into the transmission box, so that the grains can be quantitatively and quickly screened, avoiding the presence of too much grain on the sieve plate that affects the screening efficiency.

[0007] Preferably, a pair of elastic plates are fixedly connected to the inner wall of the feed hopper, the elastic plates are symmetrically arranged, a plurality of elastic shafts are fixedly connected to the surface of the elastic plates, the elastic shafts are arranged in a uniform array on the surface of the elastic plates, a limiting shaft is fixedly connected to the surface of the elastic shaft, and a blocking plate is clamped on the limiting shaft;

[0008] A plurality of mounting holes are provided on the surface of the blocking plate, and a rubber sheet is fixedly connected to the inner wall of the mounting hole, and the surface of the rubber sheet is against the outer wall of the elastic shaft. A plurality of straight grooves are provided on the surface of the blocking plate, and a movable shaft is fixedly connected inside the straight groove. A plurality of swing plates are fixedly connected at both ends of the blocking plate, and the swing plate has a "U"-shaped cross-section and the outer wall is against the inner wall of the feed hopper. When grains enter the feed hopper, the grains can fall onto the blocking plate, and the elastic shaft can be deformed under the action of gravity, so that the blocking plate can swing, so that the grains can be quickly processed and can be jittered during the transmission process, thereby avoiding the accumulation of water vapor inside the baffle, thereby ensuring smooth equipment transmission and processing efficiency.

[0009] Preferably, a plurality of elastic pressing plates are fixedly connected to the surface of the movable shaft, a plurality of metal blocks are fixedly connected to the surface of the elastic pressing plates, and the elastic pressing plates are arranged in a ring array on the outer wall of the movable shaft;

[0010] A movable ball is movably provided on the movable shaft. The movable ball is made of metal and a rubber ring is fixedly connected to the surface. The surface of the rubber ring is against the inner wall of the elastic pressure plate. The movement of the blocking plate can drive the movable ball to move, so that the surface of the movable ball and the inner wall of the elastic pressure plate can be squeezed and rubbed against each other, and the elastic pressure plate can squeeze the grains, quickly separate the united grains, and pre-treat the grains, thereby reducing the loss of subsequent screening of the equipment.

[0011] Preferably, a pair of metal shafts are fixedly connected to the inner wall of the mounting frame, a driving motor is installed on the metal shaft, a pair of friction plates are installed on the inner wall of the mounting frame, and a movable screen frame is interactively provided on the friction plate, a pair of transmission wheels are rotatably provided on the side wall of the movable screen frame, and the transmission wheels are movably arranged on the surface of the friction plate, and a mounting screen plate is installed between the movable screen frames, and the mounting screen plate is made of metal;

[0012] A transmission plate is rotatably provided on the output end of the driving motor, and a transmission shaft is rotatably provided at one end of the transmission plate. A hinge block is connected to the side of the movable screen frame close to the driving motor, and one end of the transmission shaft is rotatably arranged between the hinge blocks. When grains are poured onto the surface of the installed screen plate, the transmission shaft can be driven to move under the action of the driving motor, so that the movable screen frame can move, and excess impurities inside can be quickly shaken off, so that a certain amount of grains can be screened, thereby ensuring the screening quality of the equipment and avoiding the need for secondary screening.

[0013] Preferably, a tilting platform is fixedly connected to the surface of the fixed plate, the tilting platform is located directly below the feed hopper, a pair of limiting grooves are provided on the surface of the fixed plate, a movable box is movably inserted inside the limiting grooves, a fixed groove is provided at the bottom of the transmission box, and the bottom of the movable box is inserted inside the fixed groove;

[0014] A plurality of plastic plates are fixedly connected to the bottom of the fixed plate, and the inner wall of the plastic plate abuts against the outer wall of the movable box. When the grains fall onto the inclined platform, they can be transferred to the surface of the fixed plate under the action of gravity, and the grains can fall into the movable box along the transfer groove.

[0015] Preferably, a pair of transmission grooves are provided on the side walls of the movable box, the transmission grooves are symmetrically arranged, a plurality of discharge grooves are provided at the bottom of the transmission grooves, the discharge grooves are arranged in a uniform array on the side walls at both ends of the movable box, a plurality of rubber shafts are fixedly connected to the inner walls of the discharge grooves, the surfaces of the rubber shafts are against the surfaces of the plastic plates, and during the movement of the movable box, the surfaces of the rubber shafts and the plastic plates can be rubbed and squeezed against each other, which can reduce the accumulation of grains inside the movable box, reduce the blockage during the transmission process, ensure that the transmission amount of grains is in a relatively consistent state, reduce the labor intensity of subsequent operators, and improve the efficiency of grain screening;

[0016] A plurality of elastic sheets are fixedly connected to the side walls of the movable box, the elastic sheets are trapezoidal, a circular groove is opened on the elastic sheet, and a fixed vertical rod is movably provided inside the circular groove, a pair of conveyor belts are fixedly connected to the surface of the elastic sheet, the conveyor belts are fixedly connected to the output end of the conveyor motor, and when the conveyor motor starts to run, the conveyor belts can be driven to move, so that the movable box slowly approaches the installation screen plate, and the grains stored in the movable box can be dropped onto the installation screen plate, so as to avoid the situation where the distance between the installation screen plate and the movable box is too far, causing the grains to splash, and the loss during the transmission process can be reduced, which has good economic benefits.

[0017] Preferably, a plurality of arc-shaped plates are fixedly connected to the surface of the fixed vertical rod, the arc-shaped plates are elastic and have an "L"-shaped cross-section, and a plurality of stirring rings are fixedly connected to the outer wall of the arc-shaped plates, the stirring rings are elastic and are arranged in a uniform array on the outer wall of the arc-shaped plates. During the movement of the movable box, the arc-shaped plates can rub against the inner wall of the circular groove, thereby driving the stirring rings to move in the grains, making the discharge smooth, thereby ensuring the screening efficiency of the equipment and reducing blockages caused by the mixing and lumps of grains inside.

[0018] Preferably, a snap-in groove is provided on the surface of the supporting leg, and a movable plate is installed inside the snap-in groove. Limit rods are installed on the mounting frame and the metal frame. A pair of mesh plates are fixedly connected between the limit rods. Sponge plates are movably inserted between the mesh plates. The sponge plates between the mesh plates can quickly absorb dust, etc., can reduce the occurrence of flying dust, and can ensure the cleanliness of the processing environment.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. When grains enter the feed hopper, the grains can fall onto the blocking plate, which can drive the elastic shaft to deform under the action of gravity, so that the blocking plate can swing, so that the grains can be quickly processed and can be shaken during the transmission process, so as to avoid the accumulation of water vapor inside the blocking plate and reduce the internal blockage.

[0021] 2. The present invention can drive the movable ball to move by the movement of the blocking plate, so that the surface of the movable ball and the inner wall of the elastic pressing plate can be squeezed and rubbed against each other, so that the elastic pressing plate can squeeze the grains, quickly separate the united grains, and pre-treat the grains;

[0022] 3. The present invention starts to operate through the transmission motor, which can drive the transmission belt to move, so that the movable box slowly approaches the installation screen plate, and the grains stored in the movable box can fall onto the installation screen plate, avoiding the situation where the distance between the installation screen plate and the movable box is too far, resulting in grains splashing, and can reduce the loss during the transmission process;

[0023] 4. During the activity of the movable box, the rubber shaft surface and the plastic plate can be rubbed and squeezed against each other, which can reduce the accumulation of grains inside the movable box and the blockage during the transmission process, thereby ensuring that the transmission amount of grains is in a relatively consistent state, which is convenient for subsequent processing;

[0024] 5. In the process of the movable box moving, the arc plate can rub against the inner wall of the circular groove, which can drive the stirring ring to move in the grain, making the material discharge smooth and ensuring the screening efficiency of the equipment;

[0025] 6. When the grains are poured onto the surface of the installed screen plate, the driving motor can drive the transmission shaft to move, so that the movable screen frame can move, and the excess impurities inside can be quickly shaken off. The sponge plates between the mesh plates can quickly absorb dust, so as to reduce the occurrence of flying dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 A partial enlarged schematic diagram in the middle;

[0028] Figure 3 This is a schematic diagram of the structure of the baffle plate of the present invention;

[0029] Figure 4 This is a schematic diagram of the mounting frame structure of the present invention;

[0030] Figure 5This is a schematic diagram of the internal structure of the transmission box of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the activity box of the present invention;

[0032] Figure 7 This is a schematic diagram of the fixed vertical rod structure of the present invention;

[0033] In the figure: 1. transmission box; 2. feed hopper; 3. mounting frame; 4. fixed plate; 5. movable box; 11. supporting leg; 12. limiting rod; 121. grid plate; 13. blocking frame; 14. movable plate; 15. fixed cover; 16. transmission motor; 21. elastic plate; 22. blocking plate; 23. mounting hole; 24. swing plate; 25. movable shaft; 26. elastic pressure plate; 261. movable ball; 27. elastic shaft; 28. limiting shaft; 31. movable screen frame; 32. mounting screen plate; 33. metal shaft; 34. driving motor; 35. transmission shaft; 41. limiting groove; 42. tilting table; 51. elastic sheet; 52. transmission belt; 53. fixed vertical rod; 54. transmission groove; 55. discharge groove; 551. rubber shaft; 56. arc plate; 57. stirring ring. DETAILED DESCRIPTION

[0034] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-7 The present invention provides a technical solution: a grain quantitative screening device, comprising a transmission box 1, a plurality of welding plates are installed on the side wall of the transmission box 1, and a support leg 11 is welded on the inner wall of the welding plate, a metal frame is fixedly connected to the top of the support leg 11, a mounting frame 3 is fixedly connected between the support legs 11, and a blocking frame 13 is movably provided on the top of the metal frame, and the blocking frame 13 is movably inserted between the metal frame and the bottom of the transmission box 1, and the blocking frame 13 is made of metal and a plurality of sponge plates are fixedly connected to the inner wall;

[0036] A fixed cover 15 is installed on the surface of the transmission box 1, and a feed hopper 2 is connected to the top of the fixed cover 15. A transmission motor 16 is installed on the surface of the fixed cover 15. A fixed plate 4 is fixedly connected to the inner wall of the transmission box 1. When the grains need to be screened, the grains after drying can be poured from the feed hopper 2 to the inside of the transmission box 1, so that the grains can be quantitatively and quickly screened, avoiding the occurrence of excessive grains on the sieve plate 32 that affect the screening efficiency.

[0037] A pair of elastic plates 21 are fixedly connected to the inner wall of the feed hopper 2. The elastic plates 21 are symmetrically arranged. A plurality of elastic shafts 27 are fixedly connected to the surface of the elastic plates 21. The elastic shafts 27 are evenly arranged on the surface of the elastic plates 21. A limiting shaft 28 is fixedly connected to the surface of the elastic shaft 27. A blocking plate 22 is clamped on the limiting shaft 28.

[0038] A plurality of mounting holes 23 are provided on the surface of the blocking plate 22, and a rubber sheet is fixedly connected to the inner wall of the mounting hole 23, and the surface of the rubber sheet is against the outer wall of the elastic shaft 27. A plurality of straight grooves are provided on the surface of the blocking plate 22, and a movable shaft 25 is fixedly connected inside the straight groove. A plurality of swing plates 24 are fixedly connected at both ends of the blocking plate 22, and the cross-section of the swing plate 24 is "U"-shaped and the outer wall is against the inner wall of the feed hopper 2. When grains enter the feed hopper 2, the grains can fall on the blocking plate 22, and the elastic shaft 27 can be deformed under the action of gravity, so that the blocking plate 22 can swing, so that the grains can be quickly processed and can be jittered during the transmission process, so as to avoid the accumulation of water vapor inside the blocking plate 22 and reduce the internal blockage.

[0039] A plurality of elastic pressing plates 26 are fixedly connected to the surface of the movable shaft 25, and a plurality of metal blocks are fixedly connected to the surface of the elastic pressing plates 26. The elastic pressing plates 26 are arranged in a ring array on the outer wall of the movable shaft 25;

[0040] A movable ball 261 is movably provided on the movable shaft 25. The movable ball 261 is made of metal and a rubber ring is fixedly connected to the surface. The surface of the rubber ring is in contact with the inner wall of the elastic pressure plate 26. The movement of the blocking plate 22 can drive the movable ball 261 to move, so that the surface of the movable ball 261 and the inner wall of the elastic pressure plate 26 can be squeezed and rubbed against each other, so that the elastic pressure plate 26 can squeeze the grains, quickly separate the agglomerated grains, and pre-treat the grains.

[0041] A pair of metal shafts 33 are fixedly connected to the inner wall of the mounting frame 3, a driving motor 34 is installed on the metal shaft 33, a pair of friction plates are installed on the inner wall of the mounting frame 3, and a movable screen frame 31 is interactively arranged on the friction plates, a pair of transmission wheels are rotatably arranged on the side wall of the movable screen frame 31, and the transmission wheels are movably arranged on the surface of the friction plates, and a mounting screen plate 32 is installed between the movable screen frames 31, and the mounting screen plate 32 is made of metal;

[0042] A transmission plate is rotatably provided on the output end of the driving motor 34, and a transmission shaft 35 is rotatably provided at one end of the transmission plate. A hinge block is connected to the side of the movable screen frame 31 close to the driving motor 34, and one end of the transmission shaft 35 is rotatably set between the hinge blocks. When grains are poured onto the surface of the installed screen plate 32, the transmission shaft 35 can be driven to move under the action of the driving motor 34, and the movable screen frame 31 can be moved, so that excess impurities inside can be quickly shaken off.

[0043] A tilting platform 42 is fixedly connected to the surface of the fixed plate 4, and the tilting platform 42 is located directly below the feed hopper 2. A pair of limiting grooves 41 are opened on the surface of the fixed plate 4, and a movable box 5 is movably inserted inside the limiting groove 41. A fixed groove is opened at the bottom of the transmission box 1, and the bottom of the movable box 5 is inserted inside the fixed groove;

[0044] A plurality of plastic plates are fixedly connected to the bottom of the fixed plate 4, and the inner wall of the plastic plate is against the outer wall of the movable box 5. When the grains fall onto the inclined platform 42, the grains can be transferred to the surface of the fixed plate 4 under the action of gravity, and the grains can fall into the movable box 5 along the transfer groove 54.

[0045] A pair of transmission grooves 54 are provided on the side wall of the movable box 5. The transmission grooves 54 are symmetrically arranged. A plurality of discharge grooves 55 are provided at the bottom of the transmission grooves 54. The discharge grooves 55 are evenly arranged on the side walls of the movable box 5 at both ends. A plurality of rubber shafts 551 are fixedly connected to the inner wall of the discharge grooves 55. The surface of the rubber shaft 551 is against the surface of the plastic plate. During the activity of the movable box 5, the surface of the rubber shaft 551 and the plastic plate can be rubbed and squeezed against each other, which can reduce the accumulation of grains inside the movable box 5 and the blockage during the transmission process, thereby ensuring that the transmission amount of grains is in a relatively consistent state, which is convenient for subsequent processing.

[0046] A plurality of elastic sheets 51 are fixedly connected to the side walls of the movable box 5. The elastic sheets 51 are trapezoidal and are provided with circular grooves. A fixed vertical rod 53 is movably provided inside the circular grooves. A pair of conveyor belts 52 are fixedly connected to the surfaces of the elastic sheets 51. The conveyor belts 52 are fixedly connected to the output end of the conveyor motor 16. When the conveyor motor 16 starts to run, the conveyor belts 52 can be driven to move, so that the movable box 5 slowly approaches the installation sieve plate 32, and the grains stored in the movable box 5 can fall onto the installation sieve plate 32, thereby avoiding the situation where the distance between the installation sieve plate 32 and the movable box 5 is too far, causing the grains to splash, and reducing the loss during the transmission process.

[0047] A plurality of arc-shaped plates 56 are fixedly connected to the surface of the fixed vertical rod 53. The arc-shaped plates 56 are elastic and have an "L"-shaped cross-section. A plurality of stirring rings 57 are fixedly connected to the outer wall of the arc-shaped plates 56. The stirring rings 57 are elastic and are arranged in a uniform array on the outer wall of the arc-shaped plates 56. During the movement of the movable box 5, the arc-shaped plates 56 can rub against the inner wall of the circular groove, thereby driving the stirring rings 57 to move in the grains, enabling smooth material discharge and ensuring the screening efficiency of the equipment.

[0048] A snap-in groove is provided on the surface of the supporting leg 11, and a movable plate 14 is installed inside the snap-in groove. Limit rods 12 are installed on both the mounting frame 3 and the metal frame. A pair of mesh plates 121 are fixedly connected between the limit rods 12. Sponge plates are movably inserted between the mesh plates 121. The sponge plates between the mesh plates 121 can quickly absorb dust and the like, thereby reducing the occurrence of dust flying.

[0049] Working principle: first, when it is necessary to screen the grains, the grains after drying can be poured from the feed hopper 2 into the transmission box 1, so that the grains can be quantitatively and quickly screened to avoid excessive grains installed on the sieve plate 32 affecting the screening efficiency. As the grains enter the feed hopper 2, the grains can fall on the blocking plate 22, which can drive the elastic shaft 27 to deform under the action of gravity, so that the blocking plate 22 can swing, so that the grains can be quickly processed and can be shaken during the transmission process to avoid the internal aggregation due to water vapor, etc., and reduce the internal blockage. As the blocking plate 22 moves, the movable ball 261 can be driven to move, so that the surface of the movable ball 261 and the inner wall of the elastic pressure plate 26 can be squeezed and rubbed against each other, so that the elastic pressure plate 26 can squeeze the grains, and the aggregated grains can be quickly separated, so that the grains can be pre-processed.

[0050] Then, when the grains fall on the inclined platform 42, they can be transferred to the surface of the fixed plate 4 under the action of gravity, and the grains can fall into the movable box 5 along the transfer groove 54. As the transfer motor 16 starts to operate, the conveyor belt 52 can be driven to move, so that the movable box 5 slowly approaches the installation screen plate 32, so that the grains stored in the movable box 5 can fall on the installation screen plate 32, avoiding the situation that the distance between the installation screen plate 32 and the movable box 5 is too far, resulting in the grains splashing, and reducing the loss during the transmission process; and as the movable box 5 moves, the surface of the rubber shaft 551 and the plastic plate can be rubbed and squeezed against each other, so that the grains can be reduced. Accumulation inside the movable box 5 can be reduced, and the blockage during the transmission process can be reduced, ensuring that the transmission amount of the grains is in a relatively consistent state, which is convenient for subsequent processing, and as the movable box 5 moves, the arc plate 56 can rub against the inner wall of the circular groove, which can drive the stirring ring 57 to move in the grains, so that the material discharge is smooth, and the screening efficiency of the equipment is guaranteed;

[0051] Finally, when the grains are poured onto the surface of the installed screen plate 32, the drive shaft 35 can be driven to move under the action of the driving motor 34, and the movable screen frame 31 can be moved, so that the excess impurities inside can be quickly shaken off, and the sponge plates between the grid plates 121 can quickly absorb dust, etc., which can reduce the occurrence of dust flying. After the screening is completed, the grains can be discharged from the movable plate 14, and the grains can be quickly collected.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grain quantitative screening device, comprising a transmission box (1), characterized in that: A plurality of welding plates are installed on the side wall of the transmission box (1), and a support leg (11) is welded on the inner wall of the welding plate, a metal frame is fixedly connected to the top of the support leg (11), a mounting frame (3) is fixedly connected between the support legs (11), and a blocking frame (13) is movably provided on the top of the metal frame, the blocking frame (13) is movably inserted between the metal frame and the bottom of the transmission box (1), the blocking frame (13) is made of metal and a plurality of sponge plates are fixedly connected to the inner wall; A fixed cover (15) is installed on the surface of the transmission box (1), a feed hopper (2) is connected to the top of the fixed cover (15), a transmission motor (16) is installed on the surface of the fixed cover (15), and a fixed plate (4) is fixedly connected to the inner wall of the transmission box (1); A pair of elastic plates (21) are fixedly connected to the inner wall of the feed hopper (2), the elastic plates (21) are symmetrically arranged, a plurality of elastic shafts (27) are fixedly connected to the surface of the elastic plates (21), the elastic shafts (27) are arranged in a uniform array on the surface of the elastic plates (21), a limiting shaft (28) is fixedly connected to the surface of the elastic shaft (27), and a blocking plate (22) is clamped on the limiting shaft (28); The blocking plate (22) has a plurality of mounting holes (23) on its surface, the inner wall of the mounting hole (23) is fixedly connected to a rubber sheet, and the surface of the rubber sheet abuts against the outer wall of the elastic shaft (27), the blocking plate (22) has a plurality of straight grooves on its surface, and a movable shaft (25) is fixedly connected inside the straight grooves, and a plurality of swing plates (24) are fixedly connected at both ends of the blocking plate (22), and the swing plates (24) have a "U"-shaped cross section and the outer wall abuts against the inner wall of the feed hopper (2); A plurality of elastic pressure plates (26) are fixedly connected to the surface of the movable shaft (25), a plurality of metal blocks are fixedly connected to the surface of the elastic pressure plates (26), and the elastic pressure plates (26) are arranged in a ring array on the outer wall of the movable shaft (25); A movable ball (261) is movably provided on the movable shaft (25); the movable ball (261) is made of metal and has a rubber ring fixedly connected to its surface, and the surface of the rubber ring abuts against the inner wall of the elastic pressure plate (26); A pair of metal shafts (33) are fixedly connected to the inner wall of the mounting frame (3), a driving motor (34) is installed on the metal shaft (33), a pair of friction plates are installed on the inner wall of the mounting frame (3), and a movable screen frame (31) is interactively arranged on the friction plate, a pair of transmission wheels are rotatably arranged on the side wall of the movable screen frame (31), and the transmission wheels are movably arranged on the surface of the friction plate, and a mounting screen plate (32) is installed between the movable screen frames (31), and the mounting screen plate (32) is made of metal; A transmission sheet is rotatably provided on the output end of the driving motor (34), and a transmission shaft (35) is rotatably provided at one end of the transmission sheet. A hinge block is connected to the side of the movable screen frame (31) close to the driving motor (34), and one end of the transmission shaft (35) is rotatably provided between the hinge blocks.

2. A grain quantitative screening device according to claim 1, characterized in that: The surface of the fixed plate (4) is fixedly connected with an inclined platform (42), the inclined platform (42) is located directly below the feed hopper (2), the surface of the fixed plate (4) is provided with a pair of limiting grooves (41), a movable box (5) is movably inserted inside the limiting grooves (41), the bottom of the transmission box (1) is provided with a fixed groove, and the bottom of the movable box (5) is inserted inside the fixed groove; A plurality of plastic plates are fixedly connected to the bottom of the fixed plate (4), and the inner walls of the plastic plates abut against the outer walls of the movable box (5).

3. A grain quantitative screening device according to claim 2, characterized in that: A pair of transmission grooves (54) are provided on the side walls of the movable box (5), the transmission grooves (54) are symmetrically arranged, a plurality of discharge grooves (55) are provided at the bottom of the transmission grooves (54), the discharge grooves (55) are arranged in a uniform array on the side walls at both ends of the movable box (5), a plurality of rubber shafts (551) are fixedly connected to the inner walls of the discharge grooves (55), and the surfaces of the rubber shafts (551) are against the surface of the plastic plate; A plurality of elastic sheets (51) are fixedly connected to the side wall of the movable box (5), the elastic sheets (51) are trapezoidal, a circular groove is provided on the elastic sheet (51), and a fixed vertical rod (53) is movably provided inside the circular groove. A pair of transmission belts (52) are fixedly connected to the surface of the elastic sheet (51), and the transmission belts (52) are fixedly connected to the output end of the transmission motor (16).

4. A grain quantitative screening device according to claim 3, characterized in that: A plurality of arc-shaped plates (56) are fixedly connected to the surface of the fixed vertical rod (53), the arc-shaped plates (56) are elastic and have an "L"-shaped cross section, and a plurality of stirring rings (57) are fixedly connected to the outer wall of the arc-shaped plate (56), the stirring rings (57) are elastic and are arranged in a uniform array on the outer wall of the arc-shaped plate (56).

5. The grain quantitative screening device according to claim 1, characterized in that: A clamping groove is provided on the surface of the support leg (11), and a movable plate (14) is installed inside the clamping groove. Limiting rods (12) are installed on both the mounting frame (3) and the metal frame. A pair of mesh plates (121) are fixedly connected between the limiting rods (12), and a sponge plate is movably inserted between the mesh plates (121).

Images