CN112317320A

CN112317320A - Rice screening is effectual equipment

Info

Publication number: CN112317320A
Application number: CN202011064734.8A
Authority: CN
Inventors: 吴树发
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-02-05

Abstract

The invention relates to a device with good rice screening effect, which comprises a box body, a fixed plate, a collecting box, a filter screen, a baffle plate, a screening mechanism, a cleaning mechanism and a pushing mechanism, wherein the fixed plate, the collecting box, the filter screen, the baffle plate, the screening mechanism, the cleaning mechanism and the pushing mechanism are arranged in the box body, the screening mechanism comprises a motor, a first rotating shaft, a disc, a first roller, a belt, a second roller, a rolling rod and fan blades, the cleaning mechanism comprises a first fixed rod, a connecting rod, a push rod, a fixed block, a limiting rod and a brush head, the pushing mechanism comprises a driven component and a pushing component, the device with good rice screening effect can drive the fan blades of the screening mechanism to blow rice through the motor so as to separate impurities from the rice, the motor can also drive the pushing mechanism to throw the rice to the upper part so that the rice is moved, the impurities and, the rice screening is more sufficient, and the rice screening cost is reduced.

Description

Rice screening is effectual equipment

Technical Field

The invention particularly relates to equipment with a good rice screening effect.

Background

Have more impurity in the rice that has just reaped at present, need filter earlier, can't effectively separate rice and impurity when many equipment screening for impurity still mixes easily and gets into in the collection box in the rice, need filter many times, the waste time, the inefficiency is lower, and the rice is after screening many times, and impurity can block up the filter screen, makes impurity can't effectively pass through the filter screen, mixes easily in the rice, and the screening separation is unclean.

Summary of the invention

The invention aims to solve the technical problems that: in order to overcome the defects of the prior art, the rice screening device is good in rice screening effect.

The invention creates and solves the technical problem and adopts the technical scheme that: the equipment for screening rice with good effect comprises a box body, and a fixed plate, a collecting box, a filter screen, a baffle, a screening mechanism, a cleaning mechanism and a pushing mechanism which are arranged in the box body, wherein the box body is horizontally arranged, the baffle is vertically arranged at the top end inside the box body, the collecting box is arranged at the bottom end inside the box body, the filter screen is vertically arranged between the baffle and the collecting box, one end of the filter screen is connected with the baffle, the other end of the filter screen is connected with the collecting box, the fixed plate is horizontally arranged on the inner wall of one side, far away from the filter screen, inside the box body, and is positioned above the collecting box, the screening mechanism is positioned above the fixed plate, the cleaning mechanism is arranged on the filter screen, and the pushing;

the screening mechanism comprises a motor, a first rotating shaft, a disc, a first roller, a belt, a second roller, a rolling rod and fan blades, wherein the motor is horizontally arranged on one side of the inner wall of the box body, the motor is positioned above the fixed plate, the first rotating shaft is installed on the motor, the disc is sleeved on one end of the first rotating shaft, which is far away from the motor, the first roller is sleeved on the rotating shaft, the first roller is connected with the first rotating shaft through a key, the rolling rod is horizontally arranged on one side of the inner wall of the box body, the rolling rod is in sliding connection with the inner wall of the box body, the rolling rod and the motor are positioned on the same side, the rolling rod is positioned between the motor and the fixed plate, the second roller is sleeved on the rolling rod, the second roller is connected with the rolling rod through a key, one end of the belt is sleeved on the first roller, the other end of the belt is sleeved on the second roller, the fan blades are in transmission connection with the rolling rods;

the cleaning mechanism comprises a first fixing rod, a connecting rod, a push rod, a fixing block, a limiting rod and a brush head, wherein the fixing block is horizontally arranged at one end, close to the filter screen, of the baffle, the limiting rod is vertically arranged on the baffle, the limiting rod is located below the baffle, a strip-shaped groove is formed in the limiting rod, the first fixing rod is horizontally arranged on one side, away from the motor, of the disc, the brush head is arranged on the filter screen, the brush head is abutted against the filter screen, the brush head is in sliding connection with the filter screen, the push rod is horizontally arranged on one side, away from the filter screen, of the brush head, penetrates through the strip-shaped groove, the push rod is in sliding connection with the strip-shaped groove, the connecting rod is arranged between the first fixing rod and the push rod, one end of the connecting;

the pushing mechanism comprises a driven assembly and a pushing assembly, the driven assembly comprises a main gear, an auxiliary gear, a second rotating shaft, a second fixing rod, a first magnet and a second magnet, the main gear is sleeved on the rolling rod and is in key connection with the rolling rod, the second rotating shaft is vertically arranged at the bottom end inside the box body and is in sliding connection with the bottom end inside the box body, the second rotating shaft penetrates through the fixing plate and is in sliding connection with the fixing plate, the second rotating shaft is positioned below the rolling rod, the number of the second fixing rods is two, the two second fixing rods are respectively arranged on two sides of one end, close to the bottom end inside the box body, of the second rotating shaft, the first magnet and the second magnet are respectively arranged on one end, far away from the second rotating shaft, of the two second fixing rods, the auxiliary gear is sleeved on one end, close to the rolling rod, of the second rotating shaft, the pinion is in key connection with the second rotating shaft, the pinion is meshed with the main gear, the pushing assembly comprises a sleeve, a third magnet, a slider, a supporting rod, a sliding rod, a spring and a piston, the sleeve is vertically arranged on a fixed plate, one end of the sleeve penetrates through the fixed plate and is located below the fixed plate, the piston is arranged in the sleeve and is in sliding connection with the inner wall of the sleeve, the sliding rod is vertically arranged on the piston and is located below the piston, one end, far away from the piston, of the sliding rod penetrates through the sleeve and is located below the sleeve, the slider is horizontally arranged at the bottom end inside the box body and is in sliding connection with the bottom end inside the box body, the third magnet is arranged on one side, close to the second rotating shaft, of the slider and is attracted to the first magnet, the third magnet is repelled with the second magnet, and the supporting rod is arranged between the sliding rod and the slider, one end of the supporting rod is hinged with one end of the sliding rod, and the other end of the supporting rod is hinged with the sliding block;

an inlet is arranged above the box body.

For controlling the rotation speed, the motor is a servo motor.

For better support, a torsional spring is arranged at the hinged position of the support rod and the sliding block.

In order to prevent the rice from falling into the gap, the piston is connected with the inner wall of the sleeve in a sealing mode.

In order to rotate more smoothly, a bearing seat is arranged at the joint of the rolling rod and the inner wall of the box body, one end of the rolling rod is positioned in the bearing seat, and the rolling rod is connected with the bearing seat in a sliding manner.

In order to pour more rice, the inlet is of a funnel shape, and the diameter of a pipe orifice of the inlet close to one end of the box body is smaller than that of a pipe orifice of the inlet far away from one end of the box body.

In order to avoid rice from slipping out, two limiting plates are arranged on two sides of the disc.

For better stopping the rice roll-off, the limiting plate is annular, and the face of limiting plate sets up from inner circle to outer circle tilt up.

In order to prevent slipping, the main gear and the auxiliary gear are both coated with lubricating oil.

For the more smooth and easy slip, be equipped with the spacing groove on the inside bottom of box, the one end of slider is located the spacing inslot, slider and spacing groove sliding connection.

The rice screening device has the beneficial effects that the fan blades of the screening mechanism can be driven by the motor to blow the rice, so that impurities are separated from the rice, the motor can also drive the pushing mechanism to throw the rice to the upper side, so that the rice is moved, the impurities are separated from the rice more easily, the rice screening efficiency is improved, the motor can also drive the brush head to clean the filter screen through the cleaning mechanism, the filter screen is prevented from being blocked, the rice is screened more fully, and the rice screening cost is reduced.

Drawings

The invention is further explained below with reference to the figures and examples.

FIG. 1 is a schematic structural diagram of a device for screening rice with good effect, which is created by the invention;

FIG. 2 is a schematic view of the connection structure of the disc, the first fixing rod, the connecting rod and the pushing rod of the device for screening rice with good effect, which is created by the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is an enlarged view of portion B of FIG. 1;

in the figure: 1. the novel brush head comprises a box body, 2 parts of a fixing plate, 3 parts of a collecting box, 4 parts of a filter screen, 5 parts of a baffle, 6 parts of a motor, 7 parts of a first rotating shaft, 8 parts of a disk, 9 parts of a first roller, 10 parts of a belt, 11 parts of a second roller, 12 parts of a rolling rod, 13 parts of a fan blade, 14 parts of a first fixing rod, 15 parts of a connecting rod, 16 parts of a push rod, 17 parts of a fixing block, 18 parts of a limiting rod, 19 parts of a brush head, 20 parts of a main gear, 21 parts of a pinion, 22 parts of a second rotating shaft, 23 parts of a second fixing rod, 24 parts of a first magnet, 25 parts of a second magnet, 26 parts of a sleeve, 27 parts of a third magnet, 28 parts of a sliding block, 29 parts of a supporting rod.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate only the basic structure of the invention, and therefore they show only the components that are relevant to the invention.

As shown in figures 1-4, a device with good rice screening effect comprises a box body 1, a fixed plate 2, a collecting box 3, a filter screen 4, a baffle plate 5, a screening mechanism, a cleaning mechanism and a pushing mechanism which are arranged in the box body 1, the box body 1 is horizontally arranged, the baffle 5 is vertically arranged at the top end inside the box body 1, the collecting box 3 is arranged at the bottom end inside the box body 1, the filter screen 4 is vertically arranged between the baffle 5 and the collecting box 3, one end of the filter screen 4 is connected with the baffle 5, the other end of the filter screen 4 is connected with the collecting box 3, the fixing plate 2 is horizontally arranged on the inner wall of one side of the box body 1 far away from the filter screen 4, the fixed plate 2 is positioned above the collecting box 3, the screening mechanism is positioned above the fixed plate 2, the cleaning mechanism is arranged on the filter screen 4, and the pushing mechanism is arranged on the fixed plate 2;

screening mechanism includes motor 6, first pivot 7, disc 8, first gyro wheel 9, belt 10, second gyro wheel 11, rolling rod 12 and flabellum 13, motor 6 level sets up on box 1 inner wall one side, motor 6 is located fixed plate 2 top, first pivot 7 is installed on motor 6, disc 8 cover is established on one end that motor 6 was kept away from to first pivot 7, first gyro wheel 9 cover is established in the pivot, first gyro wheel 9 is connected with first pivot 7 key-type, rolling rod 12 level sets up on box 1 inner wall one side, rolling rod 12 and box 1 inner wall sliding connection, rolling rod 12 is located the homonymy with motor 6, rolling rod 12 is located between motor 6 and fixed plate 2, second gyro wheel 11 cover is established on rolling rod 12, second gyro wheel 11 is connected with rolling rod 12 key-type, a pot head of belt 10 is established on first gyro wheel 9, the other end of the belt 10 is sleeved on the second roller 11, the fan blade 13 is arranged at one end of the rolling rod 12 far away from the inner wall of the box body 1, and the fan blade 13 is in transmission connection with the rolling rod 12;

the cleaning mechanism comprises a first fixing rod 14, a connecting rod 15, a push rod 16, a fixing block 17, a limiting rod 18 and a brush head 19, wherein the fixing block 17 is horizontally arranged at one end, close to the filter screen 4, of the baffle 5, the limiting rod 18 is vertically arranged on the baffle 5, the limiting rod 18 is positioned below the baffle 5, a strip-shaped groove is formed in the limiting rod 18, the first fixing rod 14 is horizontally arranged on one side, far away from the motor 6, of the disc 8, the brush head 19 is arranged on the filter screen 4, the brush head 19 is abutted to the filter screen 4, the brush head 19 is in sliding connection with the filter screen 4, the push rod 16 is horizontally arranged on one side, far away from the filter screen 4, of the brush head 19, the push rod 16 penetrates through the strip-shaped groove, the push rod 16 is in sliding connection with the strip-shaped groove, the connecting rod 15 is arranged between the first fixing rod 14 and, the other end of the connecting rod 15 is hinged with a push rod 16;

the pushing mechanism comprises a driven assembly and a pushing assembly, the driven assembly comprises a main gear 20, a pinion 21, a second rotating shaft 22, a second fixing rod 23, a first magnet 24 and a second magnet 25, the main gear 20 is sleeved on the rolling rod 12, the main gear 20 is in key connection with the rolling rod 12, the second rotating shaft 22 is vertically arranged at the bottom end inside the box body 1, the second rotating shaft 22 is in sliding connection with the bottom end inside the box body 1, the second rotating shaft 22 penetrates through the fixing plate 2, the second rotating shaft 22 is in sliding connection with the fixing plate 2, the second rotating shaft 22 is positioned below the rolling rod 12, the second fixing rods 23 are two, the two second fixing rods 23 are respectively arranged on two sides of one end, close to the bottom end inside the box body 1, of the second rotating shaft 22, the first magnet 24 and the second magnet 25 are respectively arranged at one end, far away from the second rotating shaft 22, of the two second fixing rods 23, the pinion 21 is sleeved on one end of the second rotating shaft 22 close to the rolling rod 12, the pinion 21 is in key connection with the second rotating shaft 22, the pinion 21 is meshed with the main gear 20, the pushing assembly comprises a sleeve 26, a third magnet 27, a sliding block 28, a supporting rod 29, a sliding rod 33, a spring 30 and a piston 31, the sleeve 26 is vertically arranged on the fixed plate 2, one end of the sleeve 26 penetrates through the fixed plate 2 and is positioned below the fixed plate 2, the piston 31 is arranged in the sleeve 26, the piston 31 is in sliding connection with the inner wall of the sleeve 26, the sliding rod 33 is vertically arranged on the piston 31, the sliding rod 33 is positioned below the piston 31, one end of the sliding rod 33 far away from the piston 31 penetrates through the sleeve 26 and is positioned below the sleeve 26, the sliding block 28 is horizontally arranged on the bottom end inside the box body 1, the sliding block 28 is in sliding connection with the bottom end inside the box body 1, the third magnet 27 is arranged on one side of the sliding block 28, the third magnet 27 is attracted and abutted against the first magnet 24, the third magnet 27 is repelled from the second magnet 25, the supporting rod 29 is arranged between the sliding rod 33 and the sliding block 28, one end of the supporting rod 29 is hinged with one end of the sliding rod 33, and the other end of the supporting rod 29 is hinged with the sliding block 28;

an inlet 32 is arranged above the box body 1.

For controlling the rotational speed, the motor 6 is a servomotor.

For better support, a torsion spring is arranged at the hinge joint of the support rod 29 and the sliding block 28.

In order to prevent rice from falling into the gap, the piston 31 is sealingly connected to the inner wall of the sleeve 26.

In order to rotate more smoothly, a bearing seat is arranged at the joint of the rolling rod 12 and the inner wall of the box body 1, one end of the rolling rod 12 is positioned in the bearing seat, and the rolling rod 12 is connected with the bearing seat in a sliding manner.

In order to pour more rice, the inlet 32 is funnel-shaped, and the diameter of the nozzle of the inlet 32 near the end of the box body 1 is smaller than that of the nozzle of the inlet 32 far from the end of the box body 1.

In order to avoid rice from slipping out, two limiting plates are arranged on two sides of the disc 8.

In order to prevent slipping, both the primary gear 20 and the secondary gear 21 are coated with lubricating oil.

For smooth sliding, the sliding block 28 is slidably connected with the limiting groove.

When the device is used, rice is poured in from the inlet 32, then the motor 6 is started, the motor 6 drives the first rotating shaft 7 to rotate, so that the disk 8 rotates, the rice falls onto the disk 8 from the inlet 32, then the first rotating shaft 7 can drive the first roller 9 to rotate along with the falling of the disk 8, the first roller 9 drives the second roller 11 to rotate through the belt 10, so that the rolling rod 12 rotates, the rolling rod 12 drives the fan blades 13 to rotate, the fan blades 13 blow the rice falling from the disk 8 to blow a part of the rice and impurities onto the filter screen 4, the impurities pass through the filter screen 4, the rice cannot fall into the collection box 3 through the filter screen 4, the other part of the rice falls into the sleeve 26, the rolling rod 12 can drive the main gear 20 to rotate along with the rotation of the main gear 20, because the main gear 20 is meshed with the auxiliary gear 21, the main gear 20 drives the auxiliary gear 21 to rotate, the second rotating shaft 22 is rotated, the second rotating shaft 22 drives the two second fixing rods 23 to rotate around the second rotating shaft 22, so that the positions of the first magnet 24 and the second magnet 25 are changed, it is initially default that the first magnet 24 and the third magnet 26 are attracted and abutted, at the moment, the spring 30 is in a compressed state, when the first magnet 24 is changed into the second magnet 25, the second magnet 25 drives the third magnet 27 to move away from the second magnet 25, so that the slide block 28 moves away from the second rotating shaft 22, the slide block 28 drives the slide rod 33 to ascend through the support rod 29, under the restoring force of the spring 30, the slide rod 33 accelerates to drive the piston 31 to ascend, so that the rice on the piston 31 is thrown up, so that impurities and the rice are separated more easily, when the first magnet 24 replaces the second magnet 25 again, the first magnet 25 drives the third magnet 27 to move towards the direction close to the first magnet 24, so that the sliding rod 33 drives the piston 31 to descend, the spring 30 is continuously in a compressed state, the disc 8 rotates and simultaneously drives the first fixing rod 14 to rotate, the first fixing rod 14 drives the push rod 16 to move up and down through the connecting rod 15, the brush head 19 moves up and down, and the brush head 19 brushes the filter screen 4.

Here, the piston 30 and the inner wall of the sleeve 26 are connected in a sealing manner mainly to prevent gaps from being generated, and rice easily falls into the gaps, which causes waste of the rice.

Here, the limiting plate is mainly arranged to prevent the rice from sliding out of the disc 8 when the rice falls off, and if the rice slides off according to the rotation of the disc 8, the rice can be separated from the magazines more easily in the air due to the force pushed by the disc 8.

Compared with the prior art, this rice filters effectual equipment, flabellum 13 that can drive screening mechanism through motor 6 blows to the rice, make impurity and rice separation, motor 6 can also drive pushing mechanism and throw the top with the rice, make the rice move, impurity and rice separation are easier, improve rice screening efficiency, motor 6 can also realize cleanly to filter screen 4 through clean mechanism drive brush head 19, avoid the jam of filter screen 4, make the rice screening more abundant, reduce the rice screening cost.

In light of the foregoing description of the preferred embodiments of the invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. The rice screening device is characterized by comprising a box body (1), and a fixed plate (2), a collecting box (3), a filter screen (4), a baffle plate (5), a screening mechanism, a cleaning mechanism and a pushing mechanism which are arranged in the box body (1), wherein the box body (1) is horizontally arranged, the baffle plate (5) is vertically arranged at the top end inside the box body (1), the collecting box (3) is arranged at the bottom end inside the box body (1), the filter screen (4) is vertically arranged between the baffle plate (5) and the collecting box (3), one end of the filter screen (4) is connected with the baffle plate (5), the other end of the filter screen (4) is connected with the collecting box (3), the fixed plate (2) is horizontally arranged on the inner wall of one side, far away from the filter screen (4), inside the box body (1), the fixed plate (2) is positioned above the collecting box (3), the screening mechanism is positioned above the fixing plate (2), the cleaning mechanism is arranged on the filter screen (4), and the pushing mechanism is arranged on the fixing plate (2);

the screening mechanism comprises a motor (6), a first rotating shaft (7), a disc (8), a first roller (9), a belt (10), a second roller (11), a rolling rod (12) and fan blades (13), wherein the motor (6) is horizontally arranged on one side of the inner wall of the box body (1), the motor (6) is positioned above the fixed plate (2), the first rotating shaft (7) is arranged on the motor (6), the disc (8) is sleeved on one end of the first rotating shaft (7) far away from the motor (6), the first roller (9) is sleeved on the rotating shaft, the first roller (9) is in key connection with the first rotating shaft (7), the rolling rod (12) is horizontally arranged on one side of the inner wall of the box body (1), the rolling rod (12) is in sliding connection with the inner wall of the box body (1), the rolling rod (12) is positioned at the same side with the motor (6), and the rolling rod (12) is positioned between the motor (6) and the fixed plate (2), the second roller (11) is sleeved on the rolling rod (12), the second roller (11) is in key connection with the rolling rod (12), one end of the belt (10) is sleeved on the first roller (9), the other end of the belt (10) is sleeved on the second roller (11), the fan blade (13) is arranged at one end, away from the inner wall of the box body (1), of the rolling rod (12), and the fan blade (13) is in transmission connection with the rolling rod (12);

the cleaning mechanism comprises a first fixing rod (14), a connecting rod (15), a push rod (16), a fixing block (17), a limiting rod (18) and a brush head (19), wherein the fixing block (17) is horizontally arranged at one end, close to the filter screen (4), of the baffle plate (5), the limiting rod (18) is vertically arranged on the baffle plate (5), the limiting rod (18) is located below the baffle plate (5), a strip-shaped groove is formed in the limiting rod (18), the first fixing rod (14) is horizontally arranged on one side, away from the motor (6), of the disc (8), the brush head (19) is arranged on the filter screen (4), the brush head (19) is abutted against the filter screen (4), the brush head (19) is in sliding connection with the filter screen (4), the push rod (16) is horizontally arranged on one side, away from the filter screen (4), of the brush head (19), and the push rod (16) passes through the strip-shaped groove, the push rod (16) is connected with the strip-shaped groove in a sliding mode, the connecting rod (15) is arranged between the first fixing rod (14) and the push rod (16), one end of the connecting rod (15) is connected with the first fixing rod (14), and the other end of the connecting rod (15) is hinged to the push rod (16);

the pushing mechanism comprises a driven assembly and a pushing assembly, the driven assembly comprises a main gear (20), a pinion (21), a second rotating shaft (22), a second fixing rod (23), a first magnet (24) and a second magnet (25), the main gear (20) is sleeved on the rolling rod (12), the main gear (20) is in key connection with the rolling rod (12), the second rotating shaft (22) is vertically arranged at the bottom end inside the box body (1), the second rotating shaft (22) is in sliding connection with the bottom end inside the box body (1), the second rotating shaft (22) penetrates through the fixing plate (2), the second rotating shaft (22) is in sliding connection with the fixing plate (2), the second rotating shaft (22) is located below the rolling rod (12), the second fixing rods (23) are provided with two, the two second fixing rods (23) are respectively arranged on two sides of one end, close to the bottom end inside the box body (1), of the second rotating shaft (22), the first magnet (24) and the second magnet (25) are respectively arranged at one end of two second fixing rods (23) far away from the second rotating shaft (22), the pinion (21) is sleeved at one end of the second rotating shaft (22) close to the rolling rod (12), the pinion (21) is in key connection with the second rotating shaft (22), the pinion (21) is meshed with the main gear (20), the pushing assembly comprises a sleeve (26), a third magnet (27), a sliding block (28), a supporting rod (29), a sliding rod (33), a spring (30) and a piston (31), the sleeve (26) is vertically arranged on the fixing plate (2), one end of the sleeve (26) penetrates through the fixing plate (2) to be positioned below the fixing plate (2), the piston (31) is arranged in the sleeve (26), the piston (31) is in sliding connection with the inner wall of the sleeve (26), the sliding rod (33) is vertically arranged on the piston (31), the sliding rod (33) is located below the piston (31), one end, far away from the piston (31), of the sliding rod (33) penetrates through the sleeve (26) and is located below the sleeve (26), the sliding block (28) is horizontally arranged at the bottom end inside the box body (1), the sliding block (28) is connected with the bottom end inside the box body (1) in a sliding mode, the third magnet (27) is arranged on one side, close to the second rotating shaft (22), of the sliding block (28), the third magnet (27) is attracted to and abutted to the first magnet (24), the third magnet (27) is repelled to the second magnet (25), the supporting rod (29) is arranged between the sliding rod (33) and the sliding block (28), one end of the supporting rod (29) is hinged to one end of the sliding rod (33), and the other end of the supporting rod (29) is hinged to the sliding block (28);

an inlet (32) is arranged above the box body (1).

2. The rice screening apparatus according to claim 1, wherein the motor (6) is a servo motor.

3. The rice screening device as claimed in claim 1, wherein a torsion spring is provided at the hinge joint of the support bar (29) and the slide block (28).

4. The rice screening apparatus as claimed in claim 1, wherein the piston (31) is hermetically connected to an inner wall of the sleeve (26).

5. The rice screening device as claimed in claim 1, wherein a bearing seat is provided at a joint of the rolling rod (12) and the inner wall of the box body (1), one end of the rolling rod (12) is positioned in the bearing seat, and the rolling rod (12) is slidably connected with the bearing seat.

6. The rice screening apparatus according to claim 1, wherein the inlet (32) is funnel-shaped, and a diameter of a nozzle of the inlet (32) near an end of the box body (1) is smaller than a diameter of a nozzle of the inlet (32) far from the end of the box body (1).

7. The rice screening device according to claim 1, wherein two limiting plates are arranged on two sides of the disc (8).

8. The rice screening device according to claim 7, wherein the limiting plate is annular, and the plate surface of the limiting plate is inclined upwards from the inner ring to the outer ring.

9. The rice screening apparatus as claimed in claim 1, wherein the main gear (20) and the sub-gear (21) are coated with a lubricant.

10. The rice screening device according to claim 1, wherein a limiting groove is formed in the bottom end of the interior of the box body (1), one end of the sliding block (28) is located in the limiting groove, and the sliding block (28) is connected with the limiting groove in a sliding mode.