Rice screening device with impurity removing mechanism
By introducing a dust removal mechanism into the rice screening device, and using a fan and guide platform structure to remove dust and debris from the surface of the rice, the problem of poor dust handling effect of the rice screening device is solved, and efficient rice screening and conveying is achieved.
Patent Information
- Application Number
- CN202520329757.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Rice screening devices are ineffective at removing dust and debris adhering to the surface of rice grains.
A rice screening device with a cleaning mechanism was designed, including a first guide platform, a second guide platform, a bellows, a wind trough, a filter screen, a blower, a debris box, a channel, and a discharge pipe. The blower blows away dust and debris between the rice grains, and the conveying pipe and the spiral conveyor rod are used to transport and discharge the rice grains.
It achieves efficient removal of dust and debris from the surface of rice grains, and completes the screening and conveying functions of rice grains, thereby improving the rice screening efficiency.
Smart Images

Figure CN223915953U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of rice screening devices, specifically a rice screening device with a purification mechanism. Background Technology
[0002] The main methods of rice screening include traditional manual screening and mechanical screening. Traditional manual screening usually relies on people to sort the rice. Although this method is flexible, it is inefficient. Mechanical screening is achieved by using a rice screening machine. This equipment can efficiently complete the removal of impurities and screening of rice.
[0003] When using a rice screening device, the dust and debris attached to the surface of the rice grains are poorly separated when they pass through the screen.
[0004] Therefore, a rice screening device with a purification mechanism is needed to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a rice screening device with a dirt removal mechanism to solve the problem mentioned in the background art that the rice screening device has a poor effect on removing dust and dirt adhering to the surface of rice.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a rice screening device with a cleaning mechanism, comprising a shell and a partition. The partition is installed inside the shell, and a cleaning component for screening is arranged on the right side of the partition. The cleaning component for screening includes a first guide platform, a second guide platform, a bellows, a wind duct, a filter screen, a fan, a waste box, a through groove, and a waste discharge pipe. The first guide platform is installed on the right side inside the shell, and the second guide platform is installed on the right side of the shell. The bellows is installed inside the second guide platform. Wind ducts are arranged on both sides of the bellows. The filter screen is installed on the right side inside the bellows. The fan is installed inside the bellows. The waste box is installed at the bottom right side of the shell. A through groove is arranged on the left side inside the waste box, and a waste discharge pipe is installed at the bottom right side of the waste box.
[0007] As a further technical solution of this utility model, a fixed base is installed at the bottom of the left side inside the outer shell, and a conveying pipe is installed at the top of the fixed base.
[0008] As a further technical solution of this utility model, a first motor is installed at the bottom end of the conveying pipe, the top end of the first motor extends into the interior of the conveying pipe, and a spiral conveying rod is installed at the top end of the first motor.
[0009] As a further technical solution of this utility model, a hopper is installed at the bottom of the left side of the conveying pipe, and a feeding groove is provided at the top of the hopper. The right side of the feeding groove extends into the interior of the conveying pipe.
[0010] As a further technical solution of this utility model, a discharge pipe is installed at the top right side of the conveying pipe, and the discharge pipe extends to the right side of the partition.
[0011] As a further technical solution of this utility model, two sets of the bellows are installed inside the second guide platform, and the two sets of bellows are distributed in parallel.
[0012] As a further technical solution of this utility model, several air ducts are provided on both sides of the air box, and the several air ducts are distributed at equal intervals.
[0013] As a further technical solution of this utility model, a conveyor belt is provided at the bottom right side of the partition, a rotating shaft is provided on the inner side of the conveyor belt, a second motor is installed on the left side of the rotating shaft, and a feeding trough is provided at the bottom of the front surface of the outer shell.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a first guide platform and a second guide platform, a small flow channel is formed between the first guide platform and the second guide platform. When the rice flows along this flow channel, it slides down flat. At this time, the fan inside the wind box is started to accelerate the airflow and blow it along the wind channel to the rice spread in front, which can help to remove the lighter dust and debris between the rice. The debris enters the debris box along the channel and is finally discharged along the debris discharge pipe, thus realizing the impurity removal and screening function of the rice screening device when in use.
[0015] When rice is added to the feeding trough on the surface of the hopper through the conveying pipe, the rice can enter the inside of the conveying pipe along the feeding trough. When the first motor is started to drive the spiral conveying rod inside the conveying pipe to rotate, the rotating spiral conveying rod can push the rice upward and finally discharge it through the discharge pipe for screening. This realizes the conveying function of the rice screening device when in use.
[0016] By installing a conveyor belt located at the bottom right of the partition, the screened rice falls and accumulates on the surface of the conveyor belt. When the second motor is started to drive the shaft to rotate the conveyor belt, the rotating conveyor belt can help move the accumulated rice towards the feeding trough, thus realizing the function of conveying the screened rice of this rice screening device. Attached Figure Description
[0017] Figure 1 This is a frontal cross-sectional view of the present invention.
[0018] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;
[0019] Figure 3 This is a front view cross-sectional structural diagram of the second guide platform of this utility model;
[0020] Figure 4 This is a front view cross-sectional structural diagram of the conveyor belt of this utility model.
[0021] In the diagram: 1. Outer shell; 2. Partition plate; 3. Fixed base; 4. Conveying pipe; 5. First motor; 6. Screw conveyor; 7. Hopper; 8. Feeding trough; 9. Discharge pipe; 10. First guide platform; 11. Second guide platform; 12. Air box; 13. Air duct; 14. Filter screen; 15. Fan; 16. Miscellaneous waste box; 17. Through trough; 18. Waste discharge pipe; 19. Conveyor belt; 20. Rotating shaft; 21. Second motor; 22. Feeding trough. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-4 An embodiment of this utility model provides a rice screening device with a cleaning mechanism, comprising a shell 1 and a partition 2. The partition 2 is installed inside the shell 1. A fixed seat 3 is installed at the bottom left side of the shell 1. A conveying pipe 4 is installed at the top of the fixed seat 3. A first motor 5 is installed at the bottom of the conveying pipe 4. The top of the first motor 5 extends into the interior of the conveying pipe 4. A spiral conveying rod 6 is installed at the top of the first motor 5. A hopper 7 is installed at the bottom left side of the conveying pipe 4. A feeding trough 8 is provided at the top of the hopper 7. The right side of the feeding trough 8 extends into the interior of the conveying pipe 4. A discharge pipe 9 is installed at the top right side of the conveying pipe 4. The right side of the discharge pipe 9 extends into the right side of the partition 2.
[0024] Specifically, such as Figure 1 As shown, when in use, after the rice is added into the feeding trough 8 at the top of the hopper 7, it can enter the inside of the conveying pipe 4 along the feeding trough 8. When the first motor 5 is started, it drives the spiral conveying rod 6 inside the conveying pipe 4 to rotate. The rotating spiral conveying rod 6 can drive the rice that has entered to move upward and finally be discharged through the discharge pipe 9 for use.
[0025] A screening and impurity removal assembly is provided on the right side of the partition 2. The screening and impurity removal assembly includes a first guide platform 10, a second guide platform 11, an air box 12, an air duct 13, a filter screen 14, a fan 15, a debris box 16, a through channel 17, and a debris discharge pipe 18. The first guide platform 10 is installed on the right side inside the outer shell 1, and the second guide platform 11 is installed on the right side of the outer shell 1. The air box 12 is installed inside the second guide platform 11. Two sets of air boxes 12 are installed inside the second guide platform 11. The two sets of air boxes 12 are distributed in parallel. Air ducts 13 are provided on both sides of the air box 12. Several air ducts 13 are provided on both sides of the air box 12. The several air ducts 13 are distributed at equal intervals. The filter screen 14 is installed on the right side inside the air box 12. The fan 15 is installed inside the air box 12. The debris box 16 is installed at the bottom right side of the outer shell 1. The through channel 17 is provided on the left side inside the debris box 16. The debris discharge pipe 18 is installed at the bottom right side of the debris box 16.
[0026] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, during use, a narrow channel is formed between the first guide platform 10 and the second guide platform 11. When the rice flows down along this channel, it spreads out in a strip shape. The blower 15 inside the bellows 12 is activated, which can accelerate the airflow and send it out along the air duct 13. The airflow passes through the strip of rice and can carry away the lighter dust and debris between the rice grains. It can then enter the debris box 16 through the through duct 17 and then be discharged along the debris discharge pipe 18. A mesh bag can be fitted onto the debris discharge pipe 18 for use to collect the debris.
[0027] A conveyor belt 19 is provided at the bottom right side of the partition 2, a rotating shaft 20 is provided on the inner side of the conveyor belt 19, a second motor 21 is installed on the left side of the rotating shaft 20, and a feeding trough 22 is provided at the bottom front surface of the outer casing 1.
[0028] Specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, when in use, starting the second motor 21 can drive the rotating shaft 20 to rotate the conveyor belt 19 at the bottom right side of the partition 2. When the rice falls on the surface of the conveyor belt 19, it can move along the conveyor belt 19 to the feeding trough 22.
[0029] Working principle: During use, the rice to be screened is added to the feeding trough 8 at the top of the hopper 7, and then flows into the conveying pipe 4. When the first motor 5 drives the screw conveyor 6 to rotate inside the conveying pipe 4, the rotating screw conveyor 6 can carry the rice upwards, and finally pour it into the space between the first guide platform 10 and the second guide platform 11 through the discharge pipe 9. A narrow channel is formed between the first guide platform 10 and the second guide platform 11. When the rice flows down along this channel, it spreads out in a strip. The blower 15 inside the bellows 12 can be started to accelerate the process. Airflow is sent out through the air duct 13. The airflow passes through the strip of rice and can carry away the lighter dust and debris between the rice grains. It can enter the debris box 16 through the through duct 17 and then be discharged through the debris discharge pipe 18. A mesh bag can be fitted onto the debris discharge pipe 18 for collection. The heavier rice grains continue to fall and can accumulate on the surface of the conveyor belt 19 at the bottom. When the second motor 21 is started to drive the rotating shaft 20 to rotate the conveyor belt 19, the rotating conveyor belt 19 can help move the accumulated rice grains towards the feeding trough 22 and finally discharge them to the outside through the feeding trough 22.
[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A paddy screening device with impurity removal mechanism comprising a housing (1) and a partition (2), characterized in that: The inside of the shell (1) is internally mounted with a partition (2), the right side of the partition (2) is provided with a screening impurity removal assembly; The screening impurity removal assembly comprises a first guide table (10), a second guide table (11), a wind box (12), a wind groove (13), a filter screen (14), a fan (15), a sundry box (16), a through groove (17) and a sundry pipe (18), the right side of the inside of the shell (1) is mounted with the first guide table (10), the right side of the shell (1) is mounted with the second guide table (11), the inside of the second guide table (11) is mounted with the wind box (12), both sides of the wind box (12) are provided with the wind groove (13), the right side of the inside of the wind box (12) is mounted with the filter screen (14), the inside of the wind box (12) is mounted with the fan (15), the bottom end of the right side of the shell (1) is mounted with the sundry box (16), the left side of the inside of the sundry box (16) is provided with the through groove (17), the bottom end of the right side of the sundry box (16) is mounted with the sundry pipe (18).
2. The paddy screening device with impurity removing mechanism according to claim 1, characterized in that: The bottom end of the left side of the inside of the shell (1) is mounted with a fixing seat (3), the top end of the fixing seat (3) is mounted with a conveying pipe (4).
3. The paddy screening device with impurity removing mechanism according to claim 2, characterized in that: The bottom end of the conveying pipe (4) is mounted with a first motor (5), the top end of the first motor (5) extends to the inside of the conveying pipe (4), the top end of the first motor (5) is mounted with a spiral feeding rod (6).
4. The paddy screening device having a foreign matter removing mechanism according to claim 2, characterized in that: The bottom end of the left side of the conveying pipe (4) is mounted with a hopper (7), the top end of the hopper (7) is provided with a feeding groove (8), the right side of the feeding groove (8) extends to the inside of the conveying pipe (4).
5. The paddy screening device having a foreign matter removing mechanism according to claim 2, characterized in that: The top end of the right side of the conveying pipe (4) is mounted with a discharging pipe (9), the right side of the discharging pipe (9) extends to the right side of the partition (2).
6. The paddy screening device having a foreign matter removing mechanism according to claim 1, characterized in that: The wind box (12) is internally mounted with two groups in the second guide table (11), the two groups of wind boxes (12) are in parallel distribution.
7. The paddy screening device having a foreign matter removing mechanism according to claim 1, characterized in that: The wind groove (13) is provided with a plurality of wind grooves (13) on both sides of the wind box (12), and the plurality of wind grooves (13) are in equal interval distribution.
8. The paddy screening device having a foreign matter removing mechanism according to claim 1, characterized in that: The bottom end of the right side of the partition (2) is provided with a conveying belt (19), the inside of the conveying belt (19) is provided with a rotating shaft (20), the left side of the rotating shaft (20) is mounted with a second motor (21), and the bottom end of the front surface of the shell (1) is provided with a feeding groove (22).