A multi-stage screening apparatus for flour cleaning
The multi-stage screening equipment, designed with rotating columns and snap-fit plates, solves the problem of cumbersome disassembly caused by screen blockage, making screen cleaning convenient and efficient, and improving production efficiency.
Patent Information
- Application Number
- CN202521649106.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-05
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-05
AI Technical Summary
Existing multi-stage screening equipment for flour impurity removal requires manual disassembly and cleaning layer by layer after impurities accumulate and clog the screens, resulting in cumbersome operation, long time consumption, and reduced production efficiency.
The rotating column and snap-fit plate design with a rotating connection allows the screening frame to be separated and opened, simplifying the screen cleaning process and avoiding disassembly layer by layer. The screening frame is fixed by fixing bolts and nuts.
It achieves convenient and efficient screen cleaning, shortens cleaning time, and improves production efficiency.
Smart Images
Figure CN224673137U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of multi-stage screening technology for flour impurity removal, specifically a multi-stage screening device for flour impurity removal. Background Technology
[0002] Multi-stage screening equipment for flour impurity removal typically consists of 2-4 layers of screens with mesh sizes gradually decreasing from top to bottom (e.g., 24 mesh, 40 mesh, 60 mesh, etc.). These screens are then connected to a base, where a vibration motor is installed. The vibration motor causes the entire equipment to vibrate, and the flour passes through the screens due to the vibration, thus separating impurities and achieving multi-stage filtration.
[0003] Existing multi-stage screening equipment for flour impurity removal typically involves installing screens of different mesh sizes layer by layer on a base connected to a vibrating motor. The vibrating motor then runs to screen impurities from the flour poured in from above. As the number of operations increases, impurities accumulate and clog the screens, reducing the efficiency of subsequent flour screening. At this point, manual disassembly and cleaning of the upper screens is required to clean the screens that need cleaning, followed by reinstallation. This process is cumbersome, time-consuming, and reduces production efficiency. Utility Model Content
[0004] This invention provides a multi-stage screening device for flour impurity removal, which has the advantages of convenient disassembly and cleaning of screen impurities and improved production efficiency. It solves the problem of existing multi-stage screening devices for flour impurity removal, which typically install screens of different mesh sizes layer by layer on a base connected to a vibrating motor. The vibrating motor then runs to screen impurities from the flour poured in from the top. With repeated operation, internal impurities accumulate and clog the screens, reducing the efficiency of subsequent flour screening. At this point, it is necessary to manually disassemble the upper screens that need cleaning in order to clean them, and then reinstall them in their original positions. This disassembly method increases working time and reduces production efficiency.
[0005] To facilitate the disassembly and cleaning of screen impurities and improve production efficiency, this utility model provides the following technical solution: A multi-stage screening device for flour impurity removal, comprising a base, a first screening frame, a second screening frame, and a third screening frame disposed on the upper part of the base, a connecting component installed on one side of the base, and a fixing component installed on one side of the connecting component, wherein:
[0006] The connecting assembly includes a connecting plate, which is fixedly installed on one side of the base. Three sets of symmetrical fixing plates are installed at equal intervals on one side of the connecting plate. The fixing assembly is rotatably connected to the inner wall of the fixing plate.
[0007] The fixing component includes a fastening plate. Symmetrical fastening plates are installed on the outer sides of the first screening frame, the second screening frame, and the third screening frame. The fastening plates are rotatably connected to the inner wall of the fixing plate.
[0008] As a preferred technical solution of this utility model, the connecting assembly further includes rotating columns. Two rotating columns are rotatably connected to the inner wall of each fixed plate. The rotating columns are rotatably connected between the fixed plates through shaft holes. Each rotating column corresponds to and is fixedly connected to a fastening plate.
[0009] As a preferred embodiment of this utility model, the other end of the fastening plate is equipped with an L-plate for fixing the first screening frame, the second screening frame and the third screening frame.
[0010] As a preferred embodiment of this utility model, the fastening plate further includes a rubber pad and a fixing bolt, and a rubber pad is fixedly connected to the inner wall of each fastening plate.
[0011] As a preferred technical solution of this utility model, each pair of corresponding L-plates forms a group, and the inner wall of each group of L-plates is rotatably connected to a fixing bolt, and a fixing nut is sleeved on the outer surface of each fixing bolt.
[0012] As a preferred embodiment of this utility model, a vibration motor is installed on the bottom surface of the base, the base is a hollow cylinder, and the vibration motor is enclosed inside the base.
[0013] As a preferred embodiment of this utility model, the fastening plate is semi-circular, the fastening plates on adjacent screening frames are in opposite positions, and the L-plates at the ends of the fastening plates on adjacent screening frames correspond to each other and are fixed by fixing bolts and fixing nuts.
[0014] Compared with the prior art, this utility model provides a multi-stage screening device for removing impurities from flour, which has the following beneficial effects:
[0015] This multi-stage screening equipment for flour impurity removal uses a rotating column to rotate a connecting plate, which allows multiple vertically distributed screening frames to separate and open, exposing the screens inside the frames. This facilitates cleaning and unclogging of the screens without requiring disassembly of each screening frame layer by layer. The operation is simple, time-saving, and improves the cleaning efficiency of the screening frames. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle;
[0018] Figure 3 This utility model provides Figure 2 Enlarged schematic diagram of section A in the middle;
[0019] Figure 4 This is a schematic diagram of the overall structure of the connecting component and the fixing component of this utility model;
[0020] Figure 5 This utility model provides Figure 4 Enlarged schematic diagram of section B;
[0021] Figure 6 This is a schematic diagram of the overall structure of the fixing component of this utility model.
[0022] In the diagram: 1. Base; 2. Vibration motor; 3. Connecting assembly; 30. Connecting plate; 31. Fixing plate; 32. Rotating column; 4. Fixing assembly; 40. Fastening plate; 41. Rubber pad; 42. L-plate; 43. Fixing bolt; 44. Fixing nut; 5. First screening frame; 6. Second screening frame; 7. Third screening frame. Detailed Implementation
[0023] 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.
[0024] Example 1
[0025] Please see Figures 1-6 This utility model discloses a multi-stage screening device for removing impurities from flour, including a base 1. A first screening frame 5, a second screening frame 6, and a third screening frame 7 are arranged on the upper part of the base 1. A connecting component 3 is installed on one side of the base 1, and a fixing component 4 is installed on one side of the connecting component 3.
[0026] The connecting component 3 includes a connecting plate 30, which is fixedly installed on one side of the base 1. Three sets of symmetrical fixing plates 31 are installed at equal intervals on one side of the connecting plate 30. The fixing component 4 is rotatably connected to the inner wall of the fixing plate 31.
[0027] The fixing component 4 includes a fastening plate 40. Symmetrical fastening plates 40 are installed on the outer sides of the first screening frame 5, the second screening frame 6 and the third screening frame 7. The fastening plates 40 are rotatably connected to the inner wall of the fixing plate 31.
[0028] Furthermore, the connecting assembly 3 also includes rotating columns 32. Each inner wall of the fixed plate 31 is rotatably connected to two rotating columns 32. The rotating columns 32 are rotatably connected between the symmetrical fixed plates 31 through shaft holes. Each rotating column 32 corresponds to and is fixedly connected to a fastening plate 40.
[0029] Specifically, after the screening operation is completed, rotating the fastening plate 40 will cause the first screening frame 5, the second screening frame 6 and the third screening frame 7 to separate and open, thereby exposing the internal screen.
[0030] Furthermore, the other end of the fastening plate 40 is equipped with an L-plate 42 for fixing the first screening frame 5, the second screening frame 6 and the third screening frame 7. The fastening plate 40 also includes a rubber pad 41 and a fixing bolt 43. A rubber pad 41 is fixedly connected to the inner wall of each fastening plate 40. Every two corresponding L-plates 42 form a group. A fixing bolt 43 is rotatably connected to the inner wall of each group of L-plates 42. A fixing nut 44 is sleeved on the outer surface of each fixing bolt 43.
[0031] Specifically, after cleaning the internal screens of the first screening frame 5, the second screening frame 6, and the third screening frame 7, they are rotated back to their original positions. After passing through the adjacent L-plates 42 with fixing bolts 43, fixing screws are screwed onto the fixing bolts 43 to fix the multiple screening frames together.
[0032] It should be noted that the fastening plate 40 is semi-circular, the fastening plates 40 on adjacent screening frames are in opposite positions, and the L-plates 42 at the ends of the fastening plates 40 on adjacent screening frames correspond and are fixed by the fixing bolts 43 and the fixing nuts 44.
[0033] Specifically, through the above design, the first screening frame 5, the second screening frame 6 and the third screening frame 7 are fixed to each other, making the device a whole and facilitating vibration transmission.
[0034] Furthermore, a vibration motor 2 is installed on the bottom surface of the base 1, and the base 1 is a hollow cylinder, with the vibration motor 2 enclosed inside the base 1.
[0035] Specifically, the vibrating motor 2 can drive multiple screening screens to vibrate, speeding up the screening process. The bottom cylinder is in direct contact with the ground, forming a sealed space inside the base 1 to protect the vibrating motor 2 from damage caused by external environmental factors.
[0036] The working principle and usage process of this utility model are as follows: The first screening frame 5, the second screening frame 6, and the third screening frame 7 are placed sequentially on the upper part of the base 1, ensuring that the screen mesh count increases sequentially from bottom to top (or adjusted according to the type of impurities). The fastening plate 40 is rotated to fit against the outer side of the screening frame, and the L-plate 42 automatically fastens to the edge of the screening frame. The fixing bolts 43 are inserted and the fixing nuts 44 are tightened to securely lock the screening frame onto the base 1, ensuring uniform vibration transmission.
[0037] Equipment Start-up and Screening Operation: Starting the vibration motor 2 causes the base 1 to vibrate uniformly, transmitting the vibration energy to each screening frame via the connecting component 3. Flour is fed into the first screening frame 5 from the top. Larger impurities such as stones and wheat husks are intercepted by the first layer of screen, while fine powder and smaller impurities fall into the second screening frame 6. Finally, the pure flour is collected through the third screening frame 7. During vibration, the rubber pad 41 cushions the rigid collision between the screening frame and the fixed components, reducing noise and extending the equipment's lifespan.
[0038] Cleaning and Maintenance: After screening, loosen the fixing bolts 43 and rotate the fastening plate 40. Use the rotating column 32 to flip the screening frame outward to expose the inner wall. Manually clean any remaining impurities from the screen surface, or rinse with water and quickly air dry. Re-fix the screening frame and tighten the bolts to begin the next work cycle.
Claims
1. A multi-stage screening device for removing impurities from flour, comprising a base (1), wherein a first screening frame (5), a second screening frame (6), and a third screening frame (7) are provided on the upper part of the base (1), characterized in that: A connecting component (3) is installed on one side of the base (1), and a fixing component (4) is installed on one side of the connecting component (3), wherein: The connecting component (3) includes a connecting plate (30), which is fixedly installed on one side of the base (1). Three sets of symmetrical fixing plates (31) are installed at equal intervals on one side of the connecting plate (30). The fixing component (4) is rotatably connected to the inner wall of the fixing plate (31). The fixing component (4) includes a fastening plate (40). The outer sides of the first screening frame (5), the second screening frame (6) and the third screening frame (7) are all equipped with symmetrical fastening plates (40). The fastening plates (40) are rotatably connected to the inner wall of the fixing plate (31).
2. The multi-stage screening device for flour impurity removal according to claim 1, characterized in that: The connecting assembly (3) also includes a rotating column (32). Two rotating columns (32) are rotatably connected to the inner wall of each fixed plate (31). The rotating columns (32) are rotatably connected between the fixed plates (31) through shaft holes. Each rotating column (32) corresponds to and is fixedly connected to a fastening plate (40).
3. A multi-stage screening device for removing impurities from flour according to claim 2, characterized in that: The other end of the fastening plate (40) is equipped with an L plate (42) for fixing the first screening frame (5), the second screening frame (6) and the third screening frame (7).
4. A multi-stage screening device for removing impurities from flour according to claim 3, characterized in that: The fastening plate (40) also includes a rubber pad (41) and a fixing bolt (43), and a rubber pad (41) is fixedly connected to the inner wall of each fastening plate (40).
5. A multi-stage screening device for removing impurities from flour according to claim 4, characterized in that: Each pair of corresponding L plates (42) forms a group, and the inner wall of each group of L plates (42) is rotatably connected to a fixing bolt (43), and a fixing nut (44) is fitted onto the outer surface of each fixing bolt (43).
6. A multi-stage screening device for removing impurities from flour according to claim 5, characterized in that: The base (1) is equipped with a vibration motor (2) on its bottom surface. The base (1) is a hollow cylinder and the vibration motor (2) is enclosed inside the base (1).
7. A multi-stage screening device for removing impurities from flour according to claim 1, characterized in that: The fastening plate (40) is semi-circular, and the fastening plates (40) on adjacent screening frames are in opposite positions. The L-plates (42) at the ends of the fastening plates (40) on adjacent screening frames correspond to each other and are fixed by fixing bolts (43) and fixing nuts (44).