Rice stoning machine with high dust falling efficiency
By employing a dual screening structure and multi-stage dust removal methods, the problem of large and small stones remaining and causing blockages in existing rice destone removal devices has been solved, achieving efficient cleaning and high-purity screening of rice.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANMEN TIANXIANGQING ECOLOGICAL AGRICULTURE CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-04-10
AI Technical Summary
Existing rice destone removal devices use a single-stage screening structure, which may result in large and small stones remaining in the rice at the same time, reducing the purity of the rice. In addition, the screening process is prone to clogging the screen holes, affecting efficiency.
It adopts a dual screening structure, combining an air inlet pipe and an air extraction pipe for initial dust removal. Two-stage screening discs are used to screen out large stones and small stones respectively, and secondary cleaning is carried out through air distribution pipes and nozzles to ensure the removal of dust and light impurities. The inclined design of the filter plate prevents clogging.
It significantly improves the cleanliness and purity of rice, prevents sieve clogging, ensures the continuity and efficiency of the screening process, and meets the requirements for high-quality rice processing.
Smart Images
Figure CN224101245U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to rice processing technical field, concretely is a rice stone removing machine with high dust removal efficiency. BACKGROUND
[0002] In the rice processing industry, it is a crucial link to remove stones and dust impurities in rice. The existence of stones not only affects the taste and quality of rice, but also can cause serious damage to subsequent processing equipment, such as wearing machine parts, clogging the conveying pipeline, etc. Dust impurities can reduce the hygiene standard of rice, affecting its sales and food safety. With the continuous improvement of consumers' requirements for rice quality and the trend of large-scale and fine development of rice processing industry, it is of great practical significance to develop efficient and reliable rice stone removing and dust removal devices.
[0003] At present, there are many types of rice stone removing devices on the market. The common ones are vibrating screen type stone removing machines, which make rice and stones move relatively on the screen surface through the vibration of the vibrating screen, and separate them by the difference in particle size and specific gravity. There are also specific gravity stone removing machines that use wind power and vibration to separate stones and rice according to their different specific gravity characteristics, so that stones sink in a specific medium and rice floats to achieve the purpose of separation.
[0004] However, most of the existing devices use single-stage screening structure and rely only on one size of screen mesh for stone removal operation, which leads to the possibility of large and small stones remaining in the rice at the same time, reducing the purity of the rice and failing to meet the requirements of high-quality rice processing for stone removal accuracy. In the screening process, stones and rice are easy to accumulate on the screen mesh, especially when the material flow is large, stones are easy to block the screen holes, affecting the screening efficiency. SUMMARY
[0005] In order to overcome the above defects, the utility model provides a rice stone removing machine with high dust removal efficiency, which solves the problem of single-stage screening structure of the existing device, relying only on one size of screen mesh for stone removal operation, which leads to the possibility of large and small stones remaining in the rice at the same time, reducing the purity of the rice, and stones and rice are easy to accumulate on the screen mesh in the screening process, especially when the material flow is large, stones are easy to block the screen holes.
[0006] To achieve the above object, the utility model provides the following technical scheme: A rice stone removing machine with high dust removal efficiency, including screening cylinder, the screening cylinder includes top cap, the first screening disc is connected with the buckle at top cap bottom, the second screening disc is connected with the buckle at first screening disc bottom, the collecting hopper is connected with the buckle at second screening disc bottom, vibration motor is fixedly connected with one side of collecting hopper bottom, and a plurality of springs are fixedly connected with the bottom of collecting hopper, the bottom of spring is fixedly connected with fixed support ring, the both sides of top cap are provided with air inlet pipe and suction pipe in symmetrical structure, the both sides of air inlet pipe and suction pipe are provided with connecting pipe, the top of top cap is provided with feeding pipe, the feeding pipe is provided with discharge port, the discharge port is long rectangular structure, the discharge port is located between air inlet pipe and suction pipe, first filter plate and second filter plate are fixedly connected in first screening disc and second screening disc respectively.
[0007] As a further scheme of the utility model: the air distribution pipe is connected with the buckle in the collecting hopper, a plurality of nozzles are connected in communication on the air distribution pipe, an air inlet is arranged on one side of the air distribution pipe, the air inlet penetrates one side of the collecting hopper, and the nozzles are located below the second filter plate.
[0008] As a further scheme of the utility model: the diameter of the filter hole on the first filter plate is greater than the diameter of the filter hole on the second filter plate, and the first filter plate and the second filter plate are in an inclined state.
[0009] As a further scheme of the utility model: a first discharge port for cooperating with the first filter plate is formed on the outside of the first screening disc, a second discharge port for cooperating with the second filter plate is formed on the outside of the second screening disc, and a third discharge port for cooperating with the first filter plate and the second filter plate is arranged at the bottom of the collecting hopper.
[0010] As a further scheme of the utility model: a plurality of support legs are fixedly connected to the bottom of the fixed support ring, a shock-absorbing rubber pad is arranged at the bottom of the support leg, and lock blocks are arranged on the outside of the top cap, the first screening disc, the second screening disc, and the collecting hopper.
[0011] Compared with the prior art, the utility model has the beneficial effects that:
[0012] 1. Double dust removal ensures cleanliness: when feeding, the air inlet pipe and the suction pipe cooperate to lift and remove dust during the falling of the rice, complete preliminary dust removal, the air distribution pipe and the plurality of nozzles in the collecting hopper perform secondary air injection cleaning on the rice that has passed through two-stage screening, further remove residual dust and light impurities, and significantly improve the cleanliness of the rice.
[0013] 2、Adopt two-stage screening structure, first filter plate big aperture screen out big stone, second filter plate small aperture filter small stone, accurate separation of different particle size impurities, greatly improve the purity of rice, provide high quality raw materials for subsequent processing, at the same time, filter plate tilt design, material rely on gravity down, prevent filter hole blockage, ensure continuous and efficient screening, improve the overall screening efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is whole structure schematic diagram of the utility model;
[0015] Figure 2 It is first visual angle schematic diagram of section structure of the utility model;
[0016] Figure 3 It is second visual angle schematic diagram of section structure of the utility model;
[0017] Figure 4 It is split effect schematic diagram of screening cylinder of the utility model;
[0018] Figure 5 It is split effect schematic diagram of collecting hopper of the utility model.
[0019] In the drawing: 1, screening cylinder;101, top cover;102, first screening disc;103, second screening disc;104, collecting hopper;2, fixed support ring;3, first discharge port;4, second discharge port;5, spring;6, lock block;7, vibration motor;8, support leg;9, air inlet pipe;10, air outlet pipe;11, connecting pipe;12, feed pipe;13, first filter plate;14, second filter plate;15, air inlet;16, air distribution pipe;17, nozzle;18, discharge port;19, third discharge port. DETAILED DESCRIPTION
[0020] The technical scheme of the patent will be further described in detail in combination with specific implementation manners.
[0021] As Figures 1-5 shown, the utility model provides a technical scheme:
[0022] The application discloses a rice stoning machine with high dust removal efficiency, which comprises a screening cylinder 1, wherein the screening cylinder 1 comprises a top cover 101, the bottom of the top cover 101 is buckled with a first screening disc 102, the bottom of the first screening disc 102 is buckled with a second screening disc 103, the bottom of the second screening disc 103 is buckled with a collecting hopper 104, the bottom of the collecting hopper 104 is fixedly connected with a vibrating motor 7 at one side, the bottom of the collecting hopper 104 is fixedly connected with a plurality of springs 5, the bottom of the spring 5 is fixedly connected with a fixed support ring 2, the top cover 101 is provided with an air inlet pipe 9 and an air outlet pipe 10 in a symmetrical structure at two sides, the air inlet pipe 9 and the air outlet pipe 10 are both provided with a connecting pipe 11 at the outside, the top of the top cover 101 is provided with a feeding pipe 12, the feeding pipe 12 is provided with a discharging port 18, the discharging port 18 is in a long rectangular structure, the discharging port 18 is located between the air inlet pipe 9 and the air outlet pipe 10, and the first screening disc 102 and the second screening disc 103 are respectively fixedly connected with a first filter plate 13 and a second filter plate 14.
[0023] Specifically, rice enters the screening cylinder 1 through the feeding pipe 12, the discharging port 18 in the long rectangular structure makes the rice fall freely in a row, in the process, the air inlet pipe 9 located at the two sides of the top cover 101 starts to work and blows air into the screening cylinder 1, the airflow impacts the falling rice and lifts up the dust mixed in the rice, at the same time, the air outlet pipe 10 arranged in a symmetrical structure draws out the lifted dust from the screening cylinder 1 through the connecting pipe 11, and the preliminary dust removal of the rice is completed, the dust-removed rice firstly falls on the first filter plate 13 of the first screening disc 102, the mesh hole of the first filter plate 13 is designed to be relatively large, so that the rice and small stones can pass through, while large stones are intercepted on the filter plate, thereby realizing the screening of the large stones, the rice and small stones passing through the first filter plate 13 continue to fall on the second filter plate 14 of the second screening disc 103, the mesh hole of the second filter plate 14 is relatively small, only allowing small stones to pass through, and the rice is intercepted on the second filter plate 14, thereby completing the filtering and screening of the small stones, the stones passing through the two-stage screening fall into the collecting hopper 104, at the same time, the vibrating motor 7 fixed at one side of the bottom of the collecting hopper 104 starts to work, the vibration generated by the vibrating motor 7 is transmitted to the whole screening cylinder 1 through the collecting hopper 104, so that the screening process is more smooth, the rice is helped to pass through the filter plate quickly, and the stones are prevented from being accumulated on the filter plate, the multiple springs 5 at the bottom play a buffering and supporting role in the vibration process, and the stability of the screening cylinder 1 is ensured.
[0024] The collecting hopper 104 is buckled with a wind distribution pipe 16, a plurality of nozzles 17 are connected to the wind distribution pipe 16 in communication, the wind distribution pipe 16 is provided with an air inlet 15 at one side, the air inlet 15 penetrates through one side of the collecting hopper 104, the nozzles 17 are located below the second filter plate 14, the filter hole diameter of the first filter plate 13 is larger than that of the second filter plate 14, and the first filter plate 13 and the second filter plate 14 are both in an inclined state.
[0025] Specifically, the air distribution pipe 16 is connected to the collecting hopper 104 by a buckle, a plurality of groups of nozzles 17 are connected to the air distribution pipe 16, and the air inlet 15 penetrates through one side of the collecting hopper 104 to provide air source for the air distribution pipe 16. After two-stage screening, a small amount of dust or light impurities may still adhere to the surface of the rice. At this time, the air flow input from the air inlet 15 is sprayed from the plurality of groups of nozzles 17 through the air distribution pipe 16 to perform secondary cleaning on the rice falling into the collecting hopper 104. The air flow can blow away the residual dust and light impurities, further improving the cleanliness of the rice. The first filter plate 13 first screens out large stones, and the second filter plate 14 screens out small stones, so that stones of different particle sizes can be effectively intercepted, and the rice can smoothly pass through, greatly improving the separation effect of the rice and the stones and ensuring the purity of the rice. The first filter plate 13 and the second filter plate 14 are both in an inclined state. The inclined filter plate helps the material to automatically slide under the action of gravity. For the intercepted stones, the inclined filter plate makes it easier for the stones to move towards the discharge port, preventing the stones from piling up on the filter plate and blocking the filter holes, ensuring the continuity and efficiency of the screening work. At the same time, for the falling rice, the inclined filter plate also enables it to quickly pass through the filter plate, reducing the residence time of the rice on the filter plate and improving the overall screening efficiency.
[0026] A first discharge port 3 is arranged on the outer side of the first screening disc 102 for use with the first filter plate 13. A second discharge port 4 is arranged on the outer side of the second screening disc 103 for use with the second filter plate 14. A third discharge port 19 is arranged at the bottom of the collecting hopper 104 for use with the first filter plate 13 and the second filter plate 14. A plurality of support legs 8 are fixedly connected to the bottom of the fixed support ring 2, and a shock-absorbing rubber pad is arranged at the bottom of the support leg 8. Locking blocks 6 are arranged on the outer sides of the top cover 101, the first screening disc 102, the second screening disc 103, and the collecting hopper 104.
[0027] Specifically, the first discharge port 3 is used to discharge large stones intercepted by the first filter plate 13. The third discharge port 19 is used to discharge small stones filtered by the second filter plate 14. The rice intercepted by the second filter plate is discharged from the second discharge port 4. The shock-absorbing rubber pad at the bottom of the support leg 8 has a buffering and shock-absorbing effect. The locking blocks 6 can be used to flexibly add screening discs of different specifications, making the installation and disassembly of the entire device more convenient.
[0028] The working principle of the utility model is as follows:
[0029] Firstly, the rice enters the screening cylinder 1 through the feeding pipe 12. The long rectangular discharge port 18 makes the rice fall freely in a row. During this period, the air inlet pipe 9 blows air on both sides of the top cover 101, and the air outlet pipe 10 draws air through the connecting pipe 11, thereby lifting and removing the dust in the rice, completing the initial dust removal.
[0030] Secondly, the dedusted rice falls on the first filter plate 13 of the first screening disc 102, the first filter plate 13 with large aperture allows the rice and small stones to pass through and intercepts large stones, then the rice and small stones fall on the second filter plate 14 of the second screening disc 103, the second filter plate 14 with small aperture only allows small stones to pass through and intercepts rice, two-stage screening is realized, the material falling into the collecting hopper 104 is more smoothly screened under the vibration of the bottom vibration motor 7, the bottom spring 5 plays a buffering supporting role to ensure the stability of the screening cylinder 1;
[0031] It is worth mentioning that the air distribution pipe 16 in the collecting hopper 104 obtains the air source through the air inlet 15, a plurality of nozzles 17 spray air to the rice falling after two-stage screening, for secondary cleaning, to improve the cleanliness of the rice, and the first and second filter plates are in an inclined state, which is beneficial to the automatic sliding of the material under the action of gravity, prevents the filter hole from being blocked, and speeds up the screening process;
[0032] Finally, after screening is completed, large stones are discharged from the first discharge port 3 outside the first screening disc 102, small stones are discharged from the third discharge port 19 at the bottom of the collecting hopper 104, rice intercepted by the second filter plate 14 is discharged from the second discharge port 4 outside the second screening disc 103, the shock-absorbing rubber pad at the bottom of the supporting leg 8 buffers the vibration generated during operation, the components are connected through the locking block 6, which is convenient for installation and disassembly, and different specifications of screening discs can be flexibly added to adapt to various screening requirements.
[0033] The preferred embodiments of the utility model are described in detail above, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of ordinary skilled persons in the art without departing from the purpose of the utility model.
Claims
1. A rice stone removing machine with high dust removal efficiency, comprising a screening cylinder (1), characterized in that: The screening cylinder (1) includes a top cover (101), the bottom of which is snap-connected with a first screening disc (102), the bottom of which is snap-connected with a second screening disc (103), the bottom of which is snap-connected with a material collecting hopper (104), one side of the bottom of which is fixedly connected with a vibration motor (7), and the bottom of which is fixedly connected with a plurality of springs (5), the bottom of which is fixedly connected with a fixed support ring (2), the two sides of the top cover (101) are provided with air inlet pipes (9) and air outlet pipes (10) in a symmetrical structure, the outer sides of the air inlet pipes (9) and the air outlet pipes (10) are provided with connecting pipes (11), the top of the top cover (101) is provided with a feeding pipe (12), the feeding pipe (12) is provided with a discharging port (18) inside, the discharging port (18) is of a long rectangular structure, the discharging port (18) is located between the air inlet pipe (9) and the air outlet pipe (10), and the first screening disc (102) and the second screening disc (103) are respectively fixedly connected with a first filter plate (13) and a second filter plate (14) inside.
2. The rice stoner with high dust removal efficiency according to claim 1, characterized in that: The material collecting hopper (104) is snap-connected with a wind distribution pipe (16), a plurality of nozzles (17) are connected in communication on the wind distribution pipe (16), one side of the wind distribution pipe (16) is provided with an air inlet (15), the air inlet (15) penetrates one side of the material collecting hopper (104), and the nozzles (17) are located below the second filter plate (14).
3. The rice stoner with high dust removal efficiency according to claim 2, characterized in that: The diameter of the filter holes on the first filter plate (13) is greater than that of the second filter plate (14), and the first filter plate (13) and the second filter plate (14) are both in an inclined state.
4. The rice stoner with high dust removal efficiency according to claim 3, characterized in that: The first screening disc (102) is provided outside with a first discharging port (3) matched with the first filter plate (13), the second screening disc (103) is provided outside with a second discharging port (4) matched with the second filter plate (14), and the bottom of the material collecting hopper (104) is provided with a third discharging port (19) matched with the first filter plate (13) and the second filter plate (14).
5. The rice stoner with high dust removal efficiency according to claim 4, characterized in that: The bottom of the fixed support ring (2) is fixedly connected with a plurality of support legs (8), the bottom of the support leg (8) is provided with a shock-absorbing rubber pad, and the outer sides of the top cover (101), the first screening disc (102), the second screening disc (103), and the material collecting hopper (104) are all provided with lock blocks (6) matched for use.