A reversible air separation uniform cleaning screen
By introducing a metal guide pipe and PU corrugated pipe structure into the cleaning screen, combined with a uniform material flow plate and a regulating butterfly valve, the problem of uneven material distribution is solved, achieving uniform material distribution on the screen surface and efficient air separation, extending equipment life and improving product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI LUCKY MECHANICAL & ELECTRIC EQUIP MFG CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-30
AI Technical Summary
The existing cleaning screen has uneven material distribution during the feeding process, which leads to excessive local load on the screen surface, accelerated wear, and difficulty in effectively removing light impurities, thus affecting product quality.
A reversible air-separating and cleaning screen was designed, which adopts a metal guide pipe and PU corrugated pipe structure, combined with upper and lower uniform material flow plates and regulating butterfly valves, to achieve uniform material distribution and optimize air separation effect.
By combining a material leveling device and an air separation device, the material is evenly distributed on the screen surface, reducing wear and improving screening efficiency and product quality.
Smart Images
Figure CN224423545U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cleaning screen technology, and in particular to a reversible air-separated uniform cleaning screen. Background Technology
[0002] In many fields such as grain processing, agricultural product handling, and industrial raw material screening, efficient cleaning and precise grading of materials are crucial. As a key piece of equipment, the air-separation cleaning screen bears the heavy responsibility of removing impurities and optimizing material quality. However, with the large-scale development of various industries, the air-separation cleaning screen is gradually becoming unable to meet the ever-increasing production demands. In the feeding stage, materials often enter the screen body in a concentrated and uneven manner. This not only leads to excessive local load on the screen surface, accelerating screen wear and shortening its service life, but also results in uneven distribution of materials on the screen surface, with some areas having excessively thick material layers, which seriously hinders the air separation and screening effect. Taking grain processing as an example, an excessively thick material layer will prevent light impurities from being effectively blown out, and heavy impurities will be difficult to separate through the screen, resulting in the cleaned grain still containing a large number of impurities, affecting product quality.
[0003] Modern industrial production demands ever-increasing output. In the grain storage and feed processing industries, hundreds or thousands of tons of materials need to be processed every day. Extending the residence time of materials in the equipment allows them to undergo more thorough air separation and screening. Currently, the cleaning screens used on the market do not have a material leveling device and no air separation device at the feed end. They are only suitable for initial cleaning. At the same time, the material leveling effect of such cleaning screens is poor and they cannot simultaneously air separate light impurities. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a folding air-separated material uniform cleaning screen, which aims to improve the existing cleaning screens currently used in the market, which do not have a material uniform device and no air separation device at the feed end. They are only suitable for initial cleaning, and the material uniformity effect of such cleaning screens is poor and they cannot simultaneously air separate light impurities.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a folding-type air-separated material cleaning screen, comprising a screen body, a metal guide pipe connected to the top left side of the screen body, PU corrugated pipes connected to the left and right sides of the outer wall of the metal guide pipe, a feed peripheral corrugated pipe provided on the outer wall of the PU corrugated pipe, an air outlet opened on the top right side of the screen body, a baffle plate fixedly connected to the top left side of the air outlet, a suction corrugated pipe connected to the top of the air outlet, a regulating butterfly valve connected to the top of the suction corrugated pipe, a material flow direction plate fixedly connected to the inner left end of the screen body, a wear-resistant plate fixedly connected to the inner left end of the material flow direction plate, an upper material equalization flow plate fixedly connected to the bottom of the wear-resistant plate, a lower material equalization flow plate fixedly connected to the lower middle part of the inner right end of the screen body, and a screen plate fixedly connected to the bottom of the inner side of the screen body.
[0006] As a further description of the above technical solution:
[0007] The metal feed tube has an inlet located in the middle of its inner side.
[0008] As a further description of the above technical solution:
[0009] An air intake is provided in the middle of the regulating butterfly valve.
[0010] As a further description of the above technical solution:
[0011] The bottom of the screen body is connected to a discharge chute.
[0012] As a further description of the above technical solution:
[0013] The sieve plate is designed to be inclined.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, the feed inlet flexible connection of the original planar rotary cleaning screen is enlarged and replaced with a steel wire PU corrugated pipe. A feed metal guide pipe is set inside the PU corrugated pipe, which makes the service life of the PU corrugated pipe longer. The two feed inlets are eliminated and replaced with one feed inlet, so that the material can be accurately fed into the center of the upper uniform material flow plate. A certain drop is left between the upper and lower uniform material flow plates. The top of the suction box is equipped with a suction port. The suction port is designed with a regulating butterfly valve to adjust the air volume. The optimal air separation effect is achieved by adjusting the air volume of the butterfly valve, thereby meeting the needs of daily use.
[0016] 2. In this utility model, by setting upper and lower steel plates at the front end of the feed and running synchronously with the planar rotary cleaning screen, the material is evenly spread and then falls evenly onto the screen surface, greatly reducing the concentrated impact of the material on the screen surface and thus reducing the wear caused by excessive wear. The two feed ports are changed to one feed port and the position is adjusted to the middle position, which simplifies the installation and ensures that the material is not misaligned. A 450 mm diameter steel wire PU corrugated pipe is set at the feed port to seal the dust during feeding. A 200 mm diameter metal guide pipe is set at the center point of the inner side of the corrugated pipe. The material enters the metal guide pipe through the feed port so that the material does not come into contact with the outer corrugated pipe, ensuring that the corrugated pipe is not eroded by the material and wears out early, thus preventing dust from overflowing.
[0017] 3. In this utility model, a height difference is left between the end of the upper flow plate and the front end of the lower flow plate. A wind baffle is set at the point of the height difference between the upper and lower flow plates. A wind box is set on the back of the wind baffle. The wind box extends upward and gradually narrows. A butterfly valve for adjusting the air volume is set at the air intake after narrowing. By adjusting the air volume, light impurities in the material are air-selected. The upper and lower uniform material flow plates are designed with adjustable tilt angles according to the different flow speeds of materials with different moisture content, so as to achieve the optimal flow speed for materials with different moisture content and prevent material blockage and unevenness. Attached Figure Description
[0018] Figure 1 This is a front perspective view of a reversible air-separated material cleaning screen proposed in this utility model;
[0019] Figure 2 This is a structural diagram of a reversible air-separated uniform material cleaning screen proposed in this utility model.
[0020] Legend:
[0021] 1. Screen body; 2. Screen plate; 3. Feed inlet; 4. PU corrugated pipe; 5. Material flow guide plate; 6. Discharge chute; 7. Metal guide pipe; 8. Feed outer corrugated pipe; 9. Wear-resistant plate; 10. Upper material distribution plate; 11. Lower material distribution plate; 12. Air outlet; 13. Wind baffle; 14. Suction corrugated pipe; 15. Adjusting butterfly valve; 16. Suction port. 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 the appendix Figure 1 - Appendix Figure 2An embodiment of this utility model is provided: a folding-type air-separated material cleaning screen, including a screen body 1, a metal guide pipe 7 connected to the top left side of the screen body 1, PU corrugated pipes 4 connected to the left and right sides of the outer wall of the metal guide pipe 7, a feed peripheral corrugated pipe 8 provided on the outer wall of the PU corrugated pipe 4, an air outlet 12 opened on the top right side of the screen body 1, a baffle plate 13 fixedly connected to the top left side of the air outlet 12, a suction corrugated pipe 14 connected to the top of the air outlet 12, a regulating butterfly valve 15 connected to the top of the suction corrugated pipe 14, a material flow plate 5 fixedly connected to the inner left end of the screen body 1, a wear-resistant plate 9 fixedly connected to the inner left end of the material flow plate 5, an upper material equalization plate 10 fixedly connected to the bottom of the wear-resistant plate 9, a lower material equalization plate 11 fixedly connected to the middle and lower part of the inner right end of the screen body 1, and a screen plate 2 fixedly connected to the inner bottom of the screen body 1.
[0024] Specifically, a material flow direction plate 5 is fixedly connected to the left end of the screen body 1. The material flow direction plate 5 guides the flow direction of the material and ensures that the material entering the screen body 1 is evenly distributed. A wear-resistant plate 9 is also fixedly connected to the left end of the material flow direction plate 5. Since the material will frequently rub and impact the material flow direction plate 5 during the flow process, the presence of the wear-resistant plate 9 can effectively protect the material flow direction plate 5 and reduce the maintenance cost of the equipment. The metal guide pipe 7, the baffle plate 13, the suction corrugated pipe 14, the regulating butterfly valve 15, the material flow direction plate 5, and the wear-resistant plate 9 work together.
[0025] Please see the appendix Figure 1 - Appendix Figure 2 The regulating butterfly valve 15 is provided with an air intake 16 in the middle, the metal guide pipe 7 is provided with an inlet 3 in the middle of the inner side, the bottom of the screen body 1 is connected to the discharge chute 6, and the screen plate 2 adopts an inclined design.
[0026] Specifically, by adjusting the opening degree of the regulating butterfly valve 15, the size of the suction port 16 can be flexibly controlled to quickly discharge the gas generated during the screening process inside the screen body 1. The regulating butterfly valve 15 can be opened wider, and when the ventilation demand is small, the regulating butterfly valve 15 can be appropriately reduced to reduce the amount of gas intake, thereby controlling the gas environment inside the screen body 1. After the material enters the metal guide pipe 7 from the external conveying equipment, it flows smoothly into the screen body 1 through the feed port 3, avoiding blockage when the material enters the screen body 1. The inclined screen plate 2 will cause the grain to roll downward along the inclined direction of the screen plate 2 under its own weight and the screen body 1. Grain particles smaller than the aperture of the screen plate 2 will fall through the screen holes, thereby achieving the grading and screening of grains of different particle sizes.
[0027] Working principle: By enlarging the feed inlet 3 of the original planar rotary cleaning screen and replacing the flexible connection with a steel wire PU corrugated pipe 4, a feed metal guide pipe 7 is set inside the PU corrugated pipe 4. This ensures that the material flows within the metal guide pipe 7, preventing the external sealing dust from washing away from the PU corrugated pipe 4, thus extending its service life. Furthermore, the two feed inlets 3 are replaced with a single feed inlet 3, allowing the material to precisely enter the center point of the upper uniform material flow plate 10. This design prevents the material from deviating to one side. When the material flows to the upper uniform material flow plate 10... The material falls into the lower reversible flow plate at the end. Both the upper and lower uniform flow plates 10 and 11 are equipped with adjustable angles to accommodate materials with different moisture content and flow rates. A certain drop is left between the upper and lower uniform flow plates 10 and 11. A baffle plate 13 is set at the drop distance point. An air suction box is set on the back of the baffle plate 13. An air suction port 16 is set on the top of the air suction box. An air suction port 16 is designed with an air flow regulating butterfly valve 15 to adjust the air volume. The optimal air separation effect is achieved by adjusting the air volume of the butterfly valve 15, thereby meeting the needs of daily use.
[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A reversible air-separated material cleaning screen, comprising a screen body (1), characterized in that: A metal guide pipe (7) is connected to the top left side of the screen body (1). PU corrugated pipes (4) are connected to the left and right sides of the outer wall of the metal guide pipe (7). A feed corrugated pipe (8) is provided on the outer wall of the PU corrugated pipe (4). An air outlet (12) is opened on the top right side of the screen body (1). A baffle plate (13) is fixedly connected to the top left side of the air outlet (12). A suction corrugated pipe (14) is connected to the top of the air outlet (12). The top end of the suction corrugated pipe (14) is connected to an adjusting butterfly valve (15). The left end of the screen body (1) is fixedly connected to a material flow plate (5). The left end of the material flow plate (5) is fixedly connected to a wear-resistant plate (9). The bottom of the wear-resistant plate (9) is fixedly connected to an upper uniform material flow plate (10). The lower right end of the screen body (1) is fixedly connected to a lower uniform material flow plate (11). The bottom of the screen body (1) is fixedly connected to a screen plate (2).
2. The reversible air-separation uniform cleaning screen according to claim 1, characterized in that: The metal feed tube (7) has a feed inlet (3) in the middle of its inner side.
3. The reversible air-separation uniform cleaning screen according to claim 1, characterized in that: The regulating butterfly valve (15) is provided with an air intake (16) in the middle.
4. The reversible air-separation uniform cleaning screen according to claim 1, characterized in that: The bottom of the screen body (1) is connected to the discharge chute (6).
5. A reversible air-separation uniform cleaning screen according to claim 1, characterized in that: The sieve (2) is designed to be inclined.