Multistage screening mechanism for rice processing
By designing a multi-stage screening mechanism for rice processing, using an inclined filter box and a multi-stage filter mesh, combined with a movable plate and a cleaning brush, the problem of low screening accuracy and efficiency in traditional technology is solved, and dust pollution is reduced through the exhaust gas treatment system, achieving efficient and environmentally friendly rice screening and treatment.
Patent Information
- Application Number
- CN202421818221.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-30
AI Technical Summary
In traditional rice processing technology, the screen mesh hole size is fixed, and it is impossible to classify rice of different sizes in detail, resulting in low screening accuracy and efficiency, affecting the quality of the final product, and generating a large amount of dust, polluting the environment and endangering the health of workers.
A multi-stage screening mechanism for rice processing is designed, including an inclined filter box and a multi-stage filter mesh. The filter mesh aperture gradually increases from right to left. It is combined with a movable plate and cleaning brush that can move left and right to realize multi-stage screening of rice, and absorbs and treats dust generated during the screening process through the air collection hood, air extraction pipe and air pump.
It realizes efficient multi-level screening of rice, improves screening accuracy and efficiency, ensures the uniformity of rice quality, and effectively reduces dust pollution and improves the safety of the working environment.
Smart Images
Figure CN222999098U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rice processing equipment, in particular to a multi-stage screening mechanism for rice processing. Background Art
[0002] In the rice processing industry, the screening link is a key step to ensure the quality of rice. However, traditional screening technologies have many limitations.
[0003] Firstly, traditional technologies often use sieve meshes with fixed apertures, and this method is inadequate when dealing with rice grains of different sizes and qualities. Due to the fixed aperture of the sieve mesh, it is impossible to classify different-sized rice grains in detail.
[0004] Secondly, traditional technologies not only limit the screening accuracy and efficiency but also affect the quality of the final product. Because precise screening cannot be achieved, it may lead to the mixing of rice grains of different sizes and uneven qualities, reducing the overall quality.
[0005] In addition, traditional screening equipment often generates a large amount of dust during operation. These dusts not only pollute the working environment but also pose a potential threat to the health of operators. Long-term exposure to a dusty environment, workers may face health problems such as respiratory diseases. In view of this, we propose a multi-stage screening mechanism for rice processing. Content of the Utility Model
[0006] To make up for the above deficiencies, the utility model provides a multi-stage screening mechanism for rice processing.
[0007] The technical solution of the utility model is as follows:
[0008] The multi-stage screening mechanism for rice processing includes a filtering box, the filtering box is inclined with the left side lower and the right side higher, a filter screen is fixedly installed at the bottom of the filtering box, the aperture of the filter screen gradually increases from right to left, a movable plate that can move left and right is arranged above the filter screen, a cleaning brush is fixedly installed at the bottom of the movable plate, a feeding hopper is fixedly installed near the right side at the top of the filtering box, a gas collecting hood communicated with the inside is fixedly installed on the right outer wall of the filtering box, an air extraction pipe is installed on the gas collecting hood, an air pump is installed on the air extraction pipe, a collecting box is fixedly installed on the air extraction pipe, an air outlet is opened at the top of the collecting box, and a protective net is fixedly installed at the top of the air outlet.
[0009] As a preferred technical solution, a discharge port is opened on the left outer wall of the filtering box, and a guiding plate is fixedly installed below the discharge port on the left side of the filtering box.
[0010] As a preferred technical solution, an opening communicated with the inside of the gas collecting hood is opened on the left outer wall of the filtering box, and an isolation net is fixedly connected to the inner wall of the opening.
[0011] As a preferred technical solution, legs are fixedly connected to the four corners of the bottom of the filtering box, and the heights of the two legs on the left are less than those of the two legs on the right.
[0012] As a preferred technical solution, a bottom plate is hingedly installed at the bottom of each leg.
[0013] As a preferred technical solution, two lead screws are symmetrically and rotatably installed in the filtering box, and both lead screws are threadedly connected to the movable plate. Two adjusting motors are symmetrically installed on the outer wall of the filtering box, and the output shafts of the two adjusting motors are coaxially fixed to the two lead screws respectively.
[0014] As a preferred technical solution, a box door is hingedly connected to the outer wall of the collection box, and a handle is installed on the box door.
[0015] As a preferred technical solution, the distance from the bottom of the movable plate to the top of the filter screen is less than the height of the cleaning brush.
[0016] Compared with the prior art, the beneficial effects of the present utility model are:
[0017] By providing an inclined filtering box and a filter screen, the present utility model realizes multi-stage screening of rice. The aperture of the filter screen gradually decreases from left to right, which can effectively separate rice grains of different sizes. At the same time, by providing a movable movable plate and a cleaning brush, impurities on the filter screen can be cleaned during the screening process to ensure the screening effect. In addition, by providing an air collecting hood, an air extraction pipe and an air pump, dust generated during the screening process can be effectively absorbed and treated, improving the quality of the working environment. The setting of the collection box and the protective net further ensures the safe discharge of waste gas. Description of the Drawings
[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0019] Figure 2 is a schematic diagram of the structure of the movable plate of the present utility model;
[0020] Figure 3 is a schematic diagram of the structure of the collection box and its components of the present utility model.
[0021] The meanings of the various reference numerals in the figure are:
[0022] 1. Filter box; 10. Discharge port; 11. Opening; 12. Isolation net; 2. Feeding hopper; 3. Movable plate; 30. Lead screw; 31. Adjusting motor; 32. Cleaning brush; 4. Filter screen; 5. Material guide plate; 6. Air collecting hood; 60. Exhaust pipe; 61. Air pump; 62. Collection box; 63. Air outlet; 64. Box door; 65. Handle; 7. Leg; 8. Bottom plate. Detailed implementation manners
[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0024] Please refer to Figures 1 - 3 , the present invention provides a technical solution:
[0025] A multi-stage screening mechanism for rice processing, including a filter box 1, the filter box 1 is inclined with the left side lower and the right side higher, a filter screen 4 is fixedly installed at the bottom of the filter box 1, the aperture of the filter screen 4 gradually increases from right to left, a movable plate 3 that can move left and right is arranged above the filter screen 4, a cleaning brush 32 is fixedly installed at the bottom of the movable plate 3, a feeding hopper 2 is fixedly installed near the right side of the top of the filter box 1, an air collecting hood 6 communicated with the inside is fixedly installed on the right outer wall of the filter box 1, an exhaust pipe 60 is installed on the air collecting hood 6, an air pump 61 is installed on the exhaust pipe 60, a collection box 62 is fixedly installed on the exhaust pipe 60, an air outlet 63 is opened at the top of the collection box 62, and a protective net is fixedly installed at the top of the air outlet 63. By setting the inclined filter box 1 and the filter screen 4, multi-stage screening of rice is realized. The aperture of the filter screen 4 gradually decreases from left to right, which can effectively separate rice grains of different sizes. At the same time, by setting the movable plate 3 and the cleaning brush 32, the impurities on the filter screen 4 can be cleaned during the screening process to ensure the screening effect. In addition, by setting the air collecting hood 6, the exhaust pipe 60 and the air pump 61, the dust generated during the screening process can be effectively absorbed and processed, improving the quality of the working environment. The setting of the collection box 62 and the protective net further ensures the safe discharge of waste gas.
[0026] As a preference of this embodiment, an outlet 10 is opened on the left outer wall of the filter box 1, and a material guide plate 5 is fixedly installed below the outlet 10 on the left side of the filter box 1. By opening the outlet 10 on the left side of the filter box 1 and setting the material guide plate 5, the screened rice can be conveniently collected, improving the working efficiency.
[0027] Preferably, an opening 11 communicating with the inside of the air collecting hood 6 is formed on the left outer wall of the filtering box 1, and a separation net 12 is fixedly connected to the inner wall of the opening 11. By forming the opening 11 communicating with the inside of the air collecting hood 6 on the left side of the filtering box 1 and fixedly connecting the separation net 12 to the inner wall of the opening 11, such a design can not only ensure the effective discharge of waste gas, but also prevent rice grains from entering the air collecting hood 6 and affecting the treatment effect of waste gas.
[0028] Preferably, a leg 7 is fixedly connected to each of the four corners at the bottom of the filtering box 1, and the heights of the two legs 7 on the left side are less than those of the two legs 7 on the right side. By setting the heights of the legs 7, the filtering box 1 is inclined with the left side lower and the right side higher, which meets the technological requirements of rice screening and is conducive to the automatic sliding of rice to the right under the action of gravity, improving the screening efficiency.
[0029] Preferably, a bottom plate 8 is hingedly installed at the bottom of each leg 7. Hingedly installing the bottom plate 8 at the bottom of each leg 7 can enhance the stability of the entire device and also facilitate the movement and placement of the device.
[0030] Preferably, two lead screws 30 are symmetrically and rotatably installed in the filtering box 1, and the two lead screws 30 are both threadedly connected to the movable plate 3. Two adjusting motors 31 are symmetrically installed on the outer wall of the filtering box 1, and the output shafts of the two adjusting motors 31 are coaxially fixed to the two lead screws 30 respectively. By installing the lead screws 30 and the adjusting motors 31, the position of the movable plate 3 can be conveniently adjusted, thereby realizing the comprehensive cleaning of the filter screen 4, improving the automation degree and usability of the device.
[0031] Preferably, a door 64 is hingedly connected to the outer wall of the collection box 62, and a handle 65 is installed on the door 64. Hingedly connecting the door 64 to the outer wall of the collection box 62 and installing the handle 65 can facilitate the cleaning and treatment of impurities in the collected waste gas and is conducive to the long-term stable operation of the device.
[0032] Preferably, the distance from the bottom of the movable plate 3 to the top of the filter screen 4 is less than the height of the cleaning brush 32. By setting the distance from the bottom of the movable plate 3 to the top of the filter screen 4 to be less than the height of the cleaning brush 32, it can be ensured that the cleaning brush 32 can effectively clean the filter screen 4 during movement, prevent the filter screen 4 from being blocked, and improve the screening effect and the service life of the device.
[0033] When the multi-stage screening mechanism for rice processing of the present utility model is in use, first, rice is added through the feeding hopper 2 on the right side of the top of the filtering box 1. Since the filtering box 1 is inclined with the left side lower and the right side higher, the rice will naturally slide downward to the right under the action of gravity.
[0034] During the sliding process, the rice will pass through the filter screen 4 installed at the bottom. The characteristic of this filter screen 4 is that the aperture gradually increases from right to left, forming a multi-stage screening effect. Smaller rice grains and impurities will pass through the part of the filter screen 4 with a smaller aperture, while larger rice grains will be intercepted above and continue to slide to the left until they pass through the aperture suitable for their size.
[0035] After screening for a certain period of time, blockage occurs on the filter screen 4. At this time, since there is a movable plate 3 that can move left and right above the filter screen 4. A cleaning brush 32 is fixedly installed at the bottom of the movable plate 3. This cleaning brush 32 will clean the filter screen 4 when the movable plate 3 moves, preventing the filter screen 4 from being blocked and ensuring the smooth progress of screening.
[0036] In order to drive the movable plate 3 to move left and right, two lead screws 30 are symmetrically and rotatably installed in the filter box 1. These two lead screws 30 are both threadedly connected to the movable plate 3. By driving the rotation of the lead screws 30 through two adjustment motors 31 symmetrically installed on the outer wall of the filter box 1, the movable plate 3 is driven to move left and right, realizing the comprehensive cleaning of the filter screen 4.
[0037] During the process of the rice falling from the feeding hopper 2, some dust and impurities will be generated. In order to handle these dust and impurities, a gas collecting hood 6 that is fixedly installed on the right outer wall of the filter box 1 and is internally connected to it. The gas collecting hood 6 is connected to a gas pump 61 through an air extraction pipe 60. The gas pump 61 will suck the dust and impurities generated during the screening process into the air extraction pipe 60 and transport them to a collection box 62 fixedly installed on the air extraction pipe 60.
[0038] An air outlet 63 is opened at the top of the collection box 62, and the waste gas is discharged to the external environment through the air outlet 63. For safety reasons, a protective net is also fixedly installed at the top of the air outlet 63 to prevent external sundries from entering the collection box 62. At the same time, a box door 64 is also hinged on the outer wall of the collection box 62, facilitating the cleaning and handling of the impurities in the collected waste gas.
[0039] Finally, the rice after multi-stage screening will be discharged through the discharge port 10 opened on the left outer wall of the filter box 1. In order to facilitate the collection of this rice, a guide plate 5 is also fixedly installed below the discharge port 10 to guide the rice into a designated collection container.
[0040] To sum up, the multi-stage screening mechanism for rice processing of the present utility model realizes the efficient and environmentally friendly screening and processing of rice through the coordinated action of components such as the inclined filter box 1, multi-stage filter screen 4, movable plate 3 and cleaning brush 32 that can move, and the waste gas treatment system.
[0041] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A multi-stage screening mechanism for rice processing, comprising a filter box (1), characterized in that: The filter box (1) is tilted so that it is lower on the left and higher on the right. A filter screen (4) is fixedly mounted on the bottom of the filter box (1). The aperture of the filter screen (4) gradually increases from right to left. A movable plate (3) that can move left and right is arranged above the filter screen (4). A cleaning brush (32) is fixedly mounted on the bottom of the movable plate (3). A feeding hopper (2) is fixedly mounted on the top of the filter box (1) near the right side. An air collecting hood (6) that is in communication with the interior of the filter box (1) is fixedly mounted on the right outer wall of the filter box (1). An air extraction pipe (60) is mounted on the air extraction pipe (60). An air pump (61) is mounted on the air extraction pipe (60). A collecting box (62) is fixedly mounted on the air extraction pipe (60). An air outlet (63) is opened on the top of the collecting box (62), and a protective net is fixedly mounted on the top of the air outlet (63).
2. The multi-stage screening mechanism for rice processing as claimed in claim 1, characterized in that: A material discharge port (10) is provided on the left outer wall of the filter box (1), and a material guide plate (5) is fixedly installed on the left side of the filter box (1) below the material discharge port (10).
3. The multi-stage screening mechanism for rice processing as claimed in claim 2, characterized in that: The left outer wall of the filter box (1) is provided with an opening (11) which is in communication with the interior of the air collecting hood (6), and an isolation net (12) is fixedly connected to the inner wall of the opening (11).
4. The multi-stage screening mechanism for rice processing as claimed in claim 3, characterized in that: A support leg (7) is fixedly connected to each of the four corners of the bottom of the filter box (1), and the height of the two support legs (7) on the left side is smaller than the height of the two support legs (7) on the right side.
5. The multi-stage screening mechanism for rice processing as claimed in claim 4, characterized in that: A bottom plate (8) is hingedly mounted on the bottom of each supporting leg (7).
6. The multi-stage screening mechanism for rice processing as claimed in claim 5, characterized in that: Two screw rods (30) are symmetrically rotatably installed in the filter box (1), and the two screw rods (30) are both threadedly connected to the movable plate (3). Two adjustment motors (31) are symmetrically installed on the outer wall of the filter box (1), and the output shafts of the two adjustment motors (31) are coaxially fixed to the two screw rods (30) respectively.
7. The multi-stage screening mechanism for rice processing as claimed in claim 6, characterized in that: A box door (64) is hingedly connected to the outer wall of the collection box (62) via a hinge, and a handle (65) is installed on the box door (64).
8. The multi-stage screening mechanism for rice processing as claimed in claim 7, characterized in that: The distance between the bottom of the movable plate (3) and the top of the filter screen (4) is less than the height of the cleaning brush (32).