A grain and oil processing impurity screening device

Abstract

This utility model relates to an impurity screening device for grain and oil processing, belonging to the field of grain and oil processing technology. It includes a housing with a feed inlet fixedly connected to the top. A rotating rod is fixedly connected to the inner wall of the right side of the housing. A slide rail is fixedly connected to the bottom of the housing, and a dust collection box is slidably connected to the top of the slide rail. A screening component is rotatably connected to the rotating rod inside the housing, and a drive component is fixedly connected to the left side of the housing. This impurity screening device for grain and oil processing uses a drive motor to drive a cam to periodically impact the screening box, causing it to vibrate in a unique rocker-like manner around the fulcrum of the rotating rod. This vibration not only effectively disperses the material, increasing its contact frequency and area with the screen, thus significantly improving impurity separation efficiency and screening accuracy; simultaneously, the cooperation between the telescopic rod and spring at the bottom left side of the screening box effectively buffers and absorbs the rigid impact of the cam, making the vibration gentler and greatly reducing the breakage rate of grain and oil materials during the screening process, ensuring the quality of the finished product.

Description

Technical Field

[0001] This utility model relates to the field of grain and oil processing technology, specifically to an impurity screening device for grain and oil processing. Background Technology

[0002] Grains and oils are a collective term for grains and edible oils, essential basic materials for daily life and industrial production. Grains include cereals such as rice, wheat, and corn, while edible oils encompass various types such as soybean oil, peanut oil, and rapeseed oil. Grains and oils are not only a major source of energy for human diets but also important raw materials for industries such as food processing and feed production.

[0003] Currently, most vibrating screens on the market use motors to directly drive the screen body for high-frequency, small-amplitude vibration, or utilize eccentric blocks to generate centrifugal force for vibration. While these traditional technologies are widely used, they have significant drawbacks: First, their vibration trajectory is fixed and singular, often making it difficult to efficiently process both light dust and heavy sand simultaneously, leaving room for improvement in screening efficiency and purity. Second, the screen is easily clogged by moist materials under continuous vibration, leading to a sharp drop in screening efficiency and requiring frequent shutdowns for manual cleaning, severely restricting production continuity. Furthermore, most equipment uses bolts to fasten the screen, making replacement and cleaning extremely inconvenient and unable to quickly adapt to the screening needs of different materials. Dust generated during vibration can also easily escape from equipment gaps, causing environmental pollution. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an impurity screening device for grain and oil processing, which has the advantages of high screening efficiency, good anti-clogging performance, and easy screen replacement and cleaning. It solves the problems of incomplete screening, easy clogging, and inconvenient maintenance caused by the single vibration mode of traditional vibrating screens.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an impurity screening device for grain and oil processing, comprising a box body, a feed inlet fixedly connected to the top of the box body, a rotating rod fixedly connected to the inner wall of the right side of the box body, a slide rail fixedly connected to the bottom of the box body, a dust collection box slidably connected to the top of the slide rail, a screening component rotatably connected to the rotating rod inside the box body, and a drive component fixedly connected to the left side of the box body; The screening assembly includes a screen box rotatably connected to a rotating rod. A feed hole is provided on the top wall of the screen box. A rubber sleeve is fixedly connected to the top of the feed hole. One end of the rubber sleeve, away from the feed hole, is fixedly connected to the feed inlet. A layered frame is fixedly connected to the inner wall of the screen box. A limiting groove is provided on the contact surface between the left inner wall of the screen box and the layered frame. A circular buckle is fixedly connected to the top right side of the layered frame. A second limiting groove is provided on the right side of the layered frame, located to the right of the circular buckle. A screen mesh is movably connected to the top of the layered frame, with the edge of the screen mesh engaged with the circular buckle. A second circular buckle is fixedly connected to the right side of the top wall of the screen box. A second screen mesh is movably connected to the right side of the top wall of the screen box, with the edge of the second screen mesh engaged with the second circular buckle. A fine screen mesh is fixedly connected to the bottom wall of the screen box. The drive assembly includes a fixed block fixedly connected to the left inner wall of the box, a telescopic rod fixedly connected to the top of the fixed block, a spring fixedly connected to the top of the fixed block, the spring being sleeved on the telescopic rod, and the end of the telescopic rod and the spring away from the fixed block being fixedly connected to the bottom of the screen box. A drive motor is fixedly connected to the left side of the box, and the output shaft of the drive motor passes through the box and is fixedly connected to a cam.

[0006] Furthermore, there are two circular buckles arranged sequentially on the layered frame, and there are two second circular buckles arranged sequentially on the right side of the top wall of the screen box.

[0007] Furthermore, a mesh support plate is fixedly connected to the bottom of the layered frame, and two elastic balls are accommodated at the top of the mesh support plate.

[0008] Furthermore, the mesh size of the first and second screens is the same, the thickness of the limiting groove is adapted to the thickness of the screen, and the thickness of the second limiting groove is adapted to the thickness of the second screen.

[0009] Furthermore, a protective box is fixedly connected to the bottom of the drive motor, and a handle is fixedly connected to the front of the dust collection box.

[0010] Furthermore, a base is fixedly connected to the bottom of the box, and the number of the bases is four, which are distributed in a rectangular shape at the bottom of the box.

[0011] Furthermore, the diameter of the elastic ball is larger than the mesh diameter of the mesh support plate, and the diameter of the elastic ball is smaller than the distance between the mesh support plate and the screen.

[0012] Furthermore, there are two of each of the fixing block, telescopic rod, and spring, which are arranged on the bottom left edge of the screen box.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. This impurity screening device for grain and oil processing uses a drive motor to periodically strike the screen box with a cam, causing it to vibrate in a unique rocker-like manner around the pivot point of the rotating rod. This vibration not only effectively disperses the material, increasing its contact frequency and area with the screen, thus significantly improving impurity separation efficiency and screening accuracy; at the same time, the cooperation between the bottom left side of the screen box, the telescopic rod, and the spring effectively buffers and absorbs the rigid impact of the cam, making the vibration gentler and greatly reducing the breakage rate of grain and oil materials during the screening process, ensuring the quality of the finished product.

[0014] 2. This impurity screening device for grain and oil processing, through the quick-detachable screen and circular clips, enables convenient screen replacement and cleaning, greatly improving the equipment's adaptability to different materials and ease of maintenance. Furthermore, the elastic balls, under vibration, continuously impact the bottom of the screen, achieving excellent automatic screen cleaning and anti-clogging effects. The entire screening process is completed within a sealed chamber, and combined with a flexible feed rubber sleeve, completely eliminates dust leakage, optimizing the working environment and integrating multiple advantages such as high efficiency, cleanliness, and ease of maintenance. Attached Figure Description

[0015] Figure 1 This is a front sectional view of the structure of this utility model; Figure 2 This is a side sectional view of the structure of this utility model; Figure 3 The structure of this utility model Figure 1 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the layered plate and the upper sieve box of this utility model.

[0016] In the diagram: 1. Box body; 2. Screen box; 3. Limiting groove; 4. Layered frame; 5. Elastic ball; 6. Protective box; 7. Drive motor; 8. Cam; 9. Dust collection box; 10. Slide rail; 11. Handle; 12. Base; 13. Fine screen; 14. Rotating rod; 15. Mesh support plate; 16. Rubber sleeve; 17. Feed hole; 18. Feed inlet; 19. Fixing block; 20. Spring; 21. Telescopic rod; 22. Screen; 23. Second circular buckle; 24. Second screen; 25. Second limiting groove; 26. Circular buckle. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-4 This embodiment of a grain and oil processing impurity screening device includes a box body 1. A feed inlet 18 is fixedly connected to the top of the box body 1. A rotating rod 14 is fixedly connected to the inner wall of the right side of the box body 1. A slide rail 10 is fixedly connected to the bottom of the box body 1. A dust collection box 9 is slidably connected to the top of the slide rail 10. A handle 11 is fixedly connected to the front of the dust collection box 9. A base 12 is fixedly connected to the bottom of the box body 1. There are four bases 12, which are distributed in a rectangular shape at the bottom of the box body 1. A screening component is rotatably connected to the rotating rod 14 inside the box body 1. A drive component is fixedly connected to the left side of the box body 1. It should be noted that during use, the operator first pushes the dust collection box 9 along the slide rail 10 to the designated position at the bottom of the box 1 using the handle 11, ensuring it is in place to receive the dust subsequently screened out. The four bases 12 provide stable support for the equipment, which must be placed on a flat surface. Raw materials are fed into the feed inlet 18 and enter the subsequent screening process. The rotating rod 14 serves as the key movement fulcrum of the screening component and operates automatically without manual intervention.

[0019] The screening assembly includes a screen box 2 rotatably connected to a rotating rod 14. A feed hole 17 is provided on the top wall of the screen box 2. A rubber sleeve 16 is fixedly connected to the top of the feed hole 17. The end of the rubber sleeve 16 away from the feed hole 17 is fixedly connected to a feed inlet 18. A layered frame 4 is fixedly connected to the inner wall of the screen box 2. A limiting groove 3 is provided on the contact surface between the left inner wall of the screen box 2 and the layered frame 4. A circular buckle 26 is fixedly connected to the top right side of the layered frame 4. A second limiting groove 25 is provided on the right side of the layered frame 4, to the right of the circular buckle 26. A screen 22 is movably connected to the top of the layered frame 4. The edge of the screen 22 is engaged with a circular buckle 26. A second circular buckle 23 is fixedly connected to the right side of the top wall of the screen box 2. A second screen 24 is movably connected to the right side of the top wall of the screen box 2. The edge of the second screen 24 is engaged with the second circular buckle 23. There are two circular buckles 26 arranged sequentially on the layered frame 4. There are two second circular buckles 23 arranged sequentially on the right side of the top wall of the screen box 2. A fine screen 13 is fixedly connected to the bottom wall of the inner side of the screen box 2. It should be noted that the material falls from the feed inlet 18, is sealed and buffered by the rubber sleeve 16, and then falls evenly into the screen box 2 through the feed hole 17. The screen 22 and the second screen 24 are fixed by circular clips 26 and 23. This design allows operators to easily remove the screens by hand from the limiting grooves 3 and 25 when they need to be replaced or cleaned. The material undergoes multiple screenings within the screen box 2: larger impurities are intercepted by the screens 22 and 24, qualified material finally falls to the fine screen 13 for final screening, and fine dust penetrates the fine screen 13 and falls into the dust collection box 9.

[0020] The drive assembly includes a fixed block 19 fixedly connected to the left inner wall of the box 1. A telescopic rod 21 is fixedly connected to the top of the fixed block 19. A spring 20 is fixedly connected to the top of the fixed block 19. The spring 20 is sleeved on the telescopic rod 21. The ends of the telescopic rod 21 and the spring 20 away from the fixed block 19 are fixedly connected to the bottom of the screen box 2. A drive motor 7 is fixedly connected to the left side of the box 1. A protective box 6 is fixedly connected to the bottom of the drive motor 7. The output shaft of the drive motor 7 passes through the box 1 and is fixedly connected to a cam 8. There are two of each of the fixed block 19, telescopic rod 21 and spring 20, which are arranged on the bottom left edge of the screen box 2.

[0021] It should be noted that when starting the equipment, the operator starts the drive motor 7 through the external control system, and its protective box 6 provides safety protection. The motor drives the cam 8 to rotate. When the protruding part of the cam 8 hits the bottom left side of the screen box 2, the screen box 2 overcomes the elastic force of the spring 20 and compresses the telescopic rod 21 to press down; when the protruding part of the cam 8 rotates past, the screen box 2 quickly returns to its original position under the rebound force of the spring 20. This process repeats continuously, causing the screen box 2 to generate a continuous, high-frequency rocker-like vibration around the pivot point of the rotating rod 14 on the right side, which is the core power source for the screening operation. The two fixed blocks 19 and the telescopic rod 21 and spring 20 assembly on them together ensure the balance and stability of the drive.

[0022] A mesh support plate 15 is fixedly connected to the bottom of the layered frame 4. The top of the mesh support plate 15 accommodates two elastic balls 5. The diameter of the elastic balls 5 is larger than the mesh diameter of the mesh support plate 15, and the diameter of the elastic balls 5 is smaller than the distance between the mesh support plate 15 and the screen 22. The mesh size of the screen 22 and the second screen 24 is the same. The thickness of the limiting groove 3 and the screen 22 are matched. The thickness of the second limiting groove 25 and the second screen 24 are matched.

[0023] It should be noted that during the vibration of the screen box 2, the elastic balls 5 placed on the mesh support plate 15 will bounce violently and irregularly. The elastic balls 5 continuously impact the bottom of the screen 22 above, thereby shaking off particles stuck in the screen mesh openings. This plays a crucial role in automatically and continuously cleaning the screen and preventing clogging, eliminating the need for manual shutdown for cleaning and greatly ensuring production efficiency. The mesh openings of the mesh support plate 15 are smaller than the diameter of the elastic balls 5, ensuring that the elastic balls 5 always bounce above the support plate without falling off. The screen 22 has the same specifications as the second screen 24, facilitating unified management and replacement.

[0024] All electrical components mentioned in this article are electrically connected to the controller and power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0025] The working principle of the above embodiments is as follows: (1) After the drive motor 7 is started, its output shaft drives the cam 8 to rotate continuously. The cam 8 periodically strikes the bottom left side of the screen box 2, forcing the screen box 2 to overcome the elastic force of the spring 20 and press down; when the protruding part of the cam 8 rotates, the screen box 2 quickly returns to its original position under the strong rebound force of the spring 20. This reciprocating motion causes the entire screen box 2 to generate a high-frequency, stable rocker-type vibration with the rotating rod 14 on the right side as the fulcrum, providing the core power for material screening.

[0026] (2) The material is fed into the feed inlet 18, and after being buffered and sealed by the flexible rubber sleeve 16, it is evenly scattered into the vibrating screen box 2 through the feed hole 17. Under the action of vibration, the material first passes through the second screen 24 and screen 22 for preliminary and secondary screening, and larger impurities are intercepted. Qualified material continues to fall to the fine screen 13 for fine screening, and the finest dust finally penetrates the fine screen 13 and is collected by the dust collection box 9 at the bottom. At the same time, the vibration of the screen box 2 drives the elastic ball 5 to bounce violently and irregularly on the mesh support plate 15, continuously hitting the bottom of the upper screen 22, thereby effectively shaking off the particles stuck in the screen holes, realizing automatic screen cleaning and anti-clogging throughout the process, and ensuring the continuous and efficient operation of the equipment.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A grain and oil processing impurity screening device, comprising a housing (1), characterized in that: The top of the box (1) is fixedly connected to a feed inlet (18), the inner wall of the right side of the box (1) is fixedly connected to a rotating rod (14), the bottom of the box (1) is fixedly connected to a slide rail (10), the top of the slide rail (10) is slidably connected to a dust collection box (9), the inside of the box (1) is rotatably connected to the rotating rod (14), and the left side of the box (1) is fixedly connected to a drive assembly; The screening assembly includes a screen box (2) rotatably connected to a rotating rod (14). The top wall of the screen box (2) is provided with a feed hole (17). A rubber sleeve (16) is fixedly connected to the top of the feed hole (17). One end of the rubber sleeve (16) away from the feed hole (17) is fixedly connected to the feed inlet (18). A layered frame (4) is fixedly connected to the inner wall of the screen box (2). A limiting groove (3) is provided on the contact surface between the left inner wall of the screen box (2) and the layered frame (4). A circular buckle (26) is fixedly connected to the top right side of the layered frame (4). The layered frame (4) has a second limiting groove (25) on the right side of the circular buckle (26). The top of the layered frame (4) is movably connected to a screen (22). The edge of the screen (22) is engaged with the circular buckle (26). The right side of the top wall of the sieve box (2) is fixedly connected to a second circular buckle (23). The right side of the top wall of the sieve box (2) is movably connected to a second screen (24). The edge of the second screen (24) is engaged with the second circular buckle (23). The bottom wall of the inner wall of the sieve box (2) is fixedly connected to a fine screen (13). The drive assembly includes a fixed block (19) fixedly connected to the left inner wall of the box (1), a telescopic rod (21) fixedly connected to the top of the fixed block (19), a spring (20) fixedly connected to the top of the fixed block (19), the spring (20) being sleeved on the telescopic rod (21), and the ends of the telescopic rod (21) and the spring (20) away from the fixed block (19) being fixedly connected to the bottom of the screen box (2). A drive motor (7) is fixedly connected to the left side of the box (1), and the output shaft of the drive motor (7) passes through the box (1) and is fixedly connected to a cam (8).

2. The impurity screening device for grain and oil processing according to claim 1, characterized in that: There are two circular buckles (26) arranged sequentially on the layered frame (4), and there are two second circular buckles (23) arranged sequentially on the right side of the top wall of the sieve box (2).

3. The impurity screening device for grain and oil processing according to claim 1, characterized in that: The bottom of the layered frame (4) is fixedly connected to a mesh tray (15), and the top of the mesh tray (15) contains two elastic balls (5).

4. The impurity screening device for grain and oil processing according to claim 1, characterized in that: The mesh size of the screen (22) and the second screen (24) is the same, the thickness of the limiting groove (3) and the screen (22) are compatible, and the thickness of the second limiting groove (25) and the second screen (24) are compatible.

5. The impurity screening device for grain and oil processing according to claim 1, characterized in that: The bottom of the drive motor (7) is fixedly connected to a protective box (6), and the front of the dust collection box (9) is fixedly connected to a handle (11).

6. The impurity screening device for grain and oil processing according to claim 1, characterized in that: The bottom of the box (1) is fixedly connected to a base (12), and there are four bases (12), which are distributed in a rectangular shape at the bottom of the box (1).

7. The impurity screening device for grain and oil processing according to claim 3, characterized in that: The diameter of the elastic ball (5) is greater than the mesh diameter of the mesh tray (15), and the diameter of the elastic ball (5) is less than the distance between the mesh tray (15) and the screen (22).

8. The impurity screening device for grain and oil processing according to claim 1, characterized in that: The number of fixed blocks (19), telescopic rods (21) and springs (20) are all two, and they are arranged on the bottom left edge of the sieve box (2).

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