Leak-proof rice residual-free white rice grading screen
By improving the sealing design of the white rice grading sieve, the problems of rice leakage and rice flour residue were solved, achieving a more efficient grading and screening effect and improving the quality and yield of rice.
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
- 2025-07-09
- Publication Date
- 2026-06-09
AI Technical Summary
The existing rice grading screen has an open connection between the feed box and the screening box, as well as an open discharge hopper, which leads to rice leakage and rice flour residue, affecting the grading effect.
The system features a sealed design, including a feed hopper, PU corrugated pipe, and soft silicone plate. A convex sealing strip is inserted into an aluminum alloy slot to ensure a tight seal. Furthermore, the connection between the feed box and the screening box is improved to create a completely sealed structure.
It effectively prevents rice leakage and rice flour residue, improves the performance of the grading screen, and ensures rice quality and yield.
Smart Images
Figure CN224332750U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of white rice processing technology, and in particular to a leak-proof, residue-free white rice grading sieve. Background Technology
[0002] In the grain processing industry, rice is a staple food widely consumed globally, and the grading process is crucial. Rice grading screens, as key equipment for rice grading, have a decisive impact on rice quality control and market value enhancement. As people's living standards improve, consumers have increasingly stringent requirements for rice quality, not only pursuing taste and nutrition but also demanding higher standards for the uniformity and purity of rice's appearance. This makes rice processing enterprises urgently need more advanced, efficient, and quality-assured grading equipment.
[0003] In the grain processing industry, the grading and screening of white rice is a key step in ensuring product quality and enhancing market value. In addition, when faced with long and thin rice and round pearl rice, standard-sized sieves cannot achieve optimal screening, resulting in increased broken rice rate, reduced output of high-quality rice, quality loss and waste. However, the soft connection between the feed box and screening box and the discharge hopper of various white rice grading sieves on the market are open, which causes rice to break and leak. The sieve frame panel is not sealed tightly, which frequently causes rice leakage. At the same time, rice powder is easily left inside the screening box, thus reducing the effectiveness of the grading sieve. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a rice grading sieve that prevents rice leakage and leaves no residue. It aims to improve the existing technology of various rice grading sieves on the market, where the soft connection between the feed box and the sieving box and the discharge hopper are open, resulting in rice spillage and leakage. The sieve frame panel is not properly sealed, frequently causing rice leakage, and rice powder is easily left inside the sieving box.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a leak-proof, residue-free white rice grading sieve, comprising a feeding box, a feeding box cavity fixedly connected to the top center of the feeding box, square-mouthed steel plates connected to the left and right ends of the bottom of the feeding box cavity, a round tube fixed corrugated pipe II connected to the bottom of the square-mouthed steel plate, a PU corrugated pipe I connected to the bottom end of the round tube fixed corrugated pipe II, a feeding hopper connected to the front bottom of the feeding box, a PU corrugated pipe II connected to the bottom of the feeding hopper, a soft silicone plate connected to the bottom of the PU corrugated pipe II, a sieve frame panel provided on the outer wall of the feeding box, an aluminum alloy slot provided on the outer wall of the sieve frame panel, and a convex sealing strip fixedly connected to the inner side of the aluminum alloy slot.
[0006] As a further description of the above technical solution:
[0007] The bottom of the soft silicone plate is connected to a discharge hopper.
[0008] As a further description of the above technical solution:
[0009] The inner bottom of the second fixed corrugated pipe is connected to the first fixed corrugated pipe.
[0010] As a further description of the above technical solution:
[0011] An observation window is fixedly connected to the top front side of the feed box.
[0012] As a further description of the above technical solution:
[0013] The front left and right ends of the feed box are both fixedly connected to controllers.
[0014] As a further description of the above technical solution:
[0015] The bottom of each feed box is fixedly connected to a base plate.
[0016] As a further description of the above technical solution:
[0017] The bottom left and right sides of the feed box are connected to heat dissipation plates.
[0018] This utility model has the following beneficial effects:
[0019] 1. In this utility model, the original open feed inlet is replaced with a feed hopper. The outer circle and inner square ensure that there is no residue inside the feed box cavity and the outside is fully sealed to prevent rice leakage from the feed hopper. The screen frame pressure strip automatically fits the gap between the feed box and the screen frame under the action of the fixed pressure strip to ensure that there is no cross-layer leakage of rice and no residue. The convex sealing strip is inserted into the C-shaped aluminum alloy slot inside the screen frame panel. This can correct the error during the welding of the screen frame and achieve a complete sealing effect to prevent rice leakage. When this design is added to the discharge hopper, it not only ensures the fullness of the copper tube, but also allows the copper tube to be bent with a mandrel and universal mandrel, which facilitates daily use by operators.
[0020] 2. In this utility model, by using a flexible cloth bag connection between the feeding box and the screening box, the outlet of the feeding box is changed to a square shape and kept consistent and flat with the internal structure. A circular steel plate with square holes is added below the square opening, and then a 30 mm high circular tube is added to the circular steel plate to fix the corrugated pipe. The square funnel for feeding into the feeding box is changed to a circular tube with the same diameter as the circular tube of the discharge box. Finally, the outlet of the feeding box and the inlet of the screening box are sealed and connected with a length of 200-300 mm. This forms a completely sealed flexible connection to ensure that there is no rice spillage or leakage.
[0021] 3. In this utility model, by changing to a convex compressible sealing strip and then inserting the convex sealing strip into the aluminum alloy slot on the inner side of the pre-set sieve frame panel, the sealing strip has a large compression space, which corrects the dimensional error of the sieve frame manufacturing and ensures that the rice is sealed and does not leak. The five cloth bag soft connections of the discharge hopper are replaced with PU corrugated pipes. Then, according to the spacing of the five discharge hoppers, five round openings are made of soft silicone plates. The silicone plates with round openings are then simultaneously inserted into the discharge port, allowing the weight of the silicone plates to fall freely onto the plane of the upper surface of the discharge hopper, ensuring that the rice will not splash during discharge. Attached Figure Description
[0022] Figure 1 This is a front perspective view of a leak-proof, residue-free white rice grading sieve proposed in this utility model;
[0023] Figure 2 This is a partial structural breakdown diagram of a leak-proof, residue-free white rice grading sieve proposed in this utility model;
[0024] Figure 3 This is a partial structural diagram of a leak-proof, residue-free white rice grading sieve proposed in this utility model;
[0025] Figure 4 This is a partial structural diagram of a leak-proof, residue-free white rice grading sieve proposed in this utility model;
[0026] Figure 5 This is a partial structural diagram of a leak-proof, residue-free white rice grading sieve proposed in this utility model;
[0027] Figure 6 This is a schematic diagram of the structure of a leak-proof, residue-free white rice grading sieve proposed in this utility model;
[0028] Figure 7 for Figure 6 Enlarged view of point A in the image.
[0029] Legend:
[0030] 1. Feed box; 2. PU corrugated pipe one; 3. PU corrugated pipe two; 4. Soft silicone sheet; 5. Discharge hopper; 6. Feed hopper; 7. Feed box cavity; 8. Round tube fixed corrugated pipe one; 9. Square opening and square hole steel plate; 10. Round tube fixed corrugated pipe two; 11. Screen frame panel; 12. Aluminum alloy slot; 13. Convex sealing strip clip; 14. Controller; 15. Observation window; 16. Heat sink; 17. Base plate. Detailed Implementation
[0031] 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.
[0032] Please see the appendix Figure 1 - Appendix Figure 3 An embodiment of this utility model provides: a leak-proof, residue-free white rice grading sieve, including a feeding box 1, a feeding box cavity 7 fixedly connected to the top center of the feeding box 1, a square-mouthed steel plate 9 connected to the bottom left and right ends of the feeding box cavity 7, a round tube fixed corrugated pipe 2 10 connected to the bottom of the square-mouthed steel plate 9, a PU corrugated pipe 10 connected to the bottom end of the round tube fixed corrugated pipe 2 10, a feeding hopper 6 connected to the bottom front of the feeding box 1, a PU corrugated pipe 2 3 connected to the bottom of the feeding hopper 6, a soft silicone plate 4 connected to the bottom of the PU corrugated pipe 2 3, a sieve frame panel 11 provided on the outer wall of the feeding box 1, an aluminum alloy slot 12 opened on the outer wall of the sieve frame panel 11, a convex sealing strip 13 fixedly connected to the inner side of the aluminum alloy slot 12, and a round tube fixed corrugated pipe 10 connected to the bottom of the inner side of the round tube fixed corrugated pipe 2 10.
[0033] Specifically, the feed box cavity 7 is fixedly connected to the top center of the feed box 1. The square holes regularly distributed on the square-mouthed steel plate 9 ensure that the material can flow smoothly downward from the feed box cavity 7, performing preliminary screening of the material and preventing excessively large particles of debris from clogging the subsequent pipes. The bottom front of the feed box 1 is also connected to the feed hopper 6, which is funnel-shaped and allows the material to flow naturally downward under its own gravity, improving the material feeding efficiency. The bottom of the feed hopper 6 is uniformly connected to the PU corrugated pipe 3, which has the same performance. In addition, the outer wall of the feed box 1 is provided with a screen frame panel 11. The screen frame panel 11 not only provides structural support for the entire feed box 1, but also further enhances the sealing performance of the feed box 1, preventing external dust from entering the interior of the feed box 1 and affecting the quality of the material and the normal operation of the equipment.
[0034] Please see the appendix Figure 4 - Appendix Figure 7 An observation window 15 is fixedly connected to the top front side of the feed box 1. The bottom of the soft silicone plate 4 is connected to the discharge hopper 5. Controllers 14 are fixedly connected to the left and right sides of the front side of the feed box 1. Base plates 17 are fixedly connected to the bottom of the feed box 1. Heat dissipation plates 16 are connected to the bottom of the left and right sides of the feed box 1.
[0035] Specifically, the soft silicone plate 4 acts as a buffer during material transfer, and its bottom is connected to the discharge hopper 5, which is inclined. The bottom of the feed box 1 is fixedly connected to the base plate 17, which is made of metal and is sturdy and durable. It provides a stable support foundation for the entire feed box 1, ensuring that the feed box 1 does not vibrate or shake during operation, thus ensuring the stability of the equipment operation. Heat dissipation plates 16 are connected to the bottom of the left and right sides of the feed box 1. The heat dissipation plates 16 are designed to dissipate heat and can greatly increase the contact area with the air, accelerating the transfer and dissipation of heat.
[0036] Working principle: By replacing the original open feed inlet with a feed hopper 6, and with the outer circle and inner square design, the internal cavity 7 of the feed box is ensured to be free of residue, and the external part is fully sealed to prevent leakage of rice from the feed hopper 6. Under the action of the fixed pressure strip, the screen frame pressure strip automatically fits the gap between the feed box 1 and the screen frame to ensure no cross-layer leakage of rice and no residue. The convex sealing strip 13 is inserted into the C-shaped aluminum alloy slot 12 inside the screen frame panel 11. This corrects the error during the welding of the screen frame and achieves a complete sealing effect to prevent leakage of rice. When this design is added to the discharge hopper 5, it not only ensures the fullness of the copper tube, but also allows the copper tube to be bent with a mandrel and universal mandrel, thus facilitating daily use by operators.
[0037] 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 leak-proof, residue-free rice grading sieve, comprising a feed box (1), characterized in that: The top center of the feed box (1) is fixedly connected to the feed box cavity (7). The bottom left and right ends of the feed box cavity (7) are connected to square-mouthed steel plates (9). The bottom of the square-mouthed steel plates (9) is connected to a round tube fixed corrugated pipe two (10). The bottom end of the round tube fixed corrugated pipe two (10) is connected to a PU corrugated pipe one (2). The bottom front side of the feed box (1) is connected to the feed hopper (6). The bottom of the feed hopper (6) is connected to a PU corrugated pipe two (3). The bottom of the PU corrugated pipe two (3) is connected to a soft silicone plate (4). The outer wall of the feed box (1) is provided with a screen frame panel (11). The outer wall of the screen frame panel (11) is provided with an aluminum alloy slot (12). The inner side of the aluminum alloy slot (12) is fixedly connected to a convex sealing strip (13).
2. The leak-proof, residue-free white rice grading sieve according to claim 1, characterized in that: The bottom of the soft silicone plate (4) is connected to a discharge hopper (5).
3. The leak-proof, residue-free white rice grading sieve according to claim 1, characterized in that: The inner bottom of the second (10) of the circular tube fixed corrugated pipe is connected to the first (8) of the circular tube fixed corrugated pipe.
4. The leak-proof, residue-free white rice grading sieve according to claim 1, characterized in that: An observation window (15) is fixedly connected to the top front side of the feed box (1).
5. The leak-proof, residue-free white rice grading sieve according to claim 1, characterized in that: The front left and right ends of the feed box (1) are both fixedly connected to controllers (14).
6. The leak-proof, residue-free white rice grading sieve according to claim 1, characterized in that: The bottom of each feed box (1) is fixedly connected to a base plate (17).
7. The leak-proof, residue-free white rice grading sieve according to claim 1, characterized in that: The bottom of the left and right sides of the feed box (1) is connected to a heat sink (16).