Grinding device for the production of ultrafine powders
By introducing screening, quick-release, and cleaning mechanisms into the grinding device, the problem of foreign matter screening before flour grinding is solved, thereby improving flour quality and work efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 河南省三元新材料有限公司
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, flour is not screened for foreign objects before grinding, which causes foreign objects to affect the quality of flour and makes it difficult to remove them later.
A grinding device was designed that includes a screening mechanism, a quick-release mechanism, and a cleaning mechanism. The screening mechanism is used to screen out foreign objects, the quick-release mechanism is used to quickly disassemble the screening mechanism, and the cleaning mechanism is used to remove excess fine powder to ensure flour quality.
It enables effective screening and rapid disassembly of foreign objects, preventing them from entering the grinding device, reducing the hassle of removing foreign objects later, and minimizing waste.
Smart Images

Figure CN224541852U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grinding equipment technology, specifically to a grinding equipment for the production of ultrafine powders. Background Technology
[0002] Ultrafine powder, often referred to as "ultrafine powder" or "superfine powder," refers to powder materials with extremely small particle sizes.
[0003] The patent application CN218690230U discloses a fine flour ultrafine grinding device, including a housing. The housing is internally divided into a grinding chamber and a milling chamber. The upper end of the grinding chamber is connected to a feed hopper. The inner bottom wall of the milling chamber is set as an inclined surface, and a discharge port is opened at the lower end of one side wall. A motor is fixedly installed on one side wall of the housing. This utility model uses a grinding chamber and a milling chamber to perform two grinding processes on the flour, making the flour more fine after grinding. By setting a sieve plate, it is easy to sieve the ground flour. With the spiral conveying blades set in the circulation chamber, the flour that cannot pass through the sieve plate is conveyed upward and re-ground by the milling roller, resulting in better overall flour quality. At the same time, by setting a cam fixed on the rotating shaft of the motor, it can vibrate the sieve plate to avoid sieve plate blockage and obstruction of discharge.
[0004] The aforementioned patent uses crushing rollers and grinding rollers to make flour more finely ground, but the flour is not screened for foreign objects before grinding, which may cause foreign objects to be ground together with the flour, affecting the quality of the flour. At the same time, it is also inconvenient to remove foreign objects after grinding. Utility Model Content
[0005] In order to solve the problem of flour not being screened for foreign matter before grinding, the purpose of this utility model is to provide a grinding device for the production of ultrafine powder.
[0006] To solve the above technical problems, the present invention adopts the following technical solution: a grinding device for producing ultrafine powder, including a grinding barrel, a screening mechanism above the grinding barrel for screening foreign objects, a quick-release mechanism on the outside of the screening mechanism for quick disassembly of the screening mechanism, and a cleaning mechanism above the screening mechanism for removing excess powder.
[0007] The screening mechanism includes a feeding barrel, inside which a first slot is provided. A screening frame is detachably installed inside the first slot. A connecting ring is fixedly installed at the bottom of the screening frame. An annular groove is provided below the first slot, and the connecting ring is movably engaged in the annular groove.
[0008] Preferably, the quick-release mechanism includes a movable ring movably disposed on the outside of the feed hopper, annularly distributed limiting plates fixedly installed on the inner wall of the movable ring, annularly distributed slots opened on the outside of the feed hopper, the limiting plates passing through the slots, the side of the limiting plates away from the movable ring located in the annular slots, evenly distributed limiting slots opened on the outside of the connecting ring, two fixed rings fixedly installed on the outside of the feed hopper, symmetrically distributed connecting blocks fixedly installed on the top of the movable ring, a locking rod movably disposed in the middle of the connecting block, a symmetrically distributed limiting block fixedly installed at one end of the locking rod, and a symmetrically distributed second locking groove opened on the outside of one of the fixed rings, the locking rod and the second locking groove working together.
[0009] Preferably, the cleaning mechanism includes a support ring fixedly installed at the top of the screening frame, and a cleaning plate is movably sleeved on the outside of the support ring.
[0010] Preferably, stabilizing rings are fixedly installed at both the top and bottom of the movable ring, and the two stabilizing rings are respectively movably locked in the corresponding fixed rings.
[0011] Preferably, an extension ring is fixedly installed on the side of each of the two fixed rings that are far apart from each other, and the outer side of the extension ring is provided with evenly distributed fixing holes.
[0012] Preferably, symmetrically distributed push-pull plates are fixedly installed on the outer side of the movable ring, and symmetrically distributed third slots are opened inside the feed hopper, with the push-pull plates movably locked in the third slots.
[0013] Preferably, the push-pull plates are distributed in an L-shape.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. This application can filter foreign objects by setting a filter box, which can prevent foreign objects from entering the grinding barrel and making it more troublesome to remove them later. At the same time, the filter box can be quickly disassembled, so that the staff can remove the filtered foreign objects for the next use.
[0016] 2. This application, by setting up a cleaning mechanism, can scrape the accumulated flour from the top of the sieve frame, reducing waste. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0019] Figure 2 This is a schematic diagram of the feeding hopper in this utility model.
[0020] Figure 3 This is a schematic diagram of the screening mechanism in this utility model.
[0021] Figure 4 This is a schematic diagram of the quick-release mechanism in this utility model.
[0022] Figure 5 This is a schematic diagram of the cleaning mechanism in this utility model.
[0023] In the diagram: 101, Grinding barrel; 102, Screening mechanism; 201, Quick release mechanism; 301, Cleaning mechanism; 1, Feeding barrel; 11, First slot; 12, Screening frame; 13, Connecting ring; 14, Annular groove; 2, Movable ring; 21, Limiting plate; 22, Empty groove; 23, Limiting groove; 24, Fixing ring; 25, Connecting block; 26, Locking rod; 27, Limiting block; 28, Second slot; 3, Support ring; 31, Cleaning plate; 4, Stabilizing ring; 5, Extension ring; 51, Fixing hole; 6, Push-pull plate; 61, Third slot. Detailed Implementation
[0024] 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.
[0025] like Figure 1-5 As shown, this utility model discloses a grinding device for producing ultrafine powders, and provides the following two embodiments:
[0026] Example 1: A grinding device for producing ultrafine powder includes a grinding barrel 101. A screening mechanism 102 is provided above the grinding barrel 101 for screening foreign objects. A quick-release mechanism 201 is provided on the outside of the screening mechanism 102 for quick disassembly of the screening mechanism 102. At the same time, a cleaning mechanism 301 for removing excess powder is provided above the screening mechanism 102.
[0027] The screening mechanism 102 includes a feeding barrel 1, a first slot 11 is provided inside the feeding barrel 1, a screening frame 12 is detachably installed inside the first slot 11, a connecting ring 13 is fixedly installed at the bottom of the screening frame 12, an annular groove 14 is provided below the first slot 11, and the connecting ring 13 is movably engaged in the annular groove 14.
[0028] Example 2 differs from Example 1 in that: the quick-release mechanism 201 includes a movable ring 2 movably disposed on the outside of the feed hopper 1. A ring-shaped limiting plate 21 is fixedly installed on the inner wall of the movable ring 2. A ring-shaped slot 22 is opened on the outside of the feed hopper 1, through which the limiting plate 21 passes. The side of the limiting plate 21 away from the movable ring 2 is located in the ring slot 14. A uniformly distributed limiting groove 23 is opened on the outside of the connecting ring 13. Two fixing rings 24 are fixedly installed on the outside of the feed hopper 1. A symmetrically distributed connecting block 25 is fixedly installed at the top of the movable ring 2. A locking rod 26 is movably disposed in the middle of the connecting block 25. A symmetrically distributed limiting block 27 is fixedly installed at one end of the locking rod 26. A symmetrically distributed second locking groove 28 is opened on the outside of one of the fixing rings 24. The locking rod 26 and the second locking groove 28 work together. Through the quick-release mechanism 201, the screening frame 12 can be quickly disassembled, allowing workers to remove the screened foreign objects for convenient next use.
[0029] The cleaning mechanism 301 includes a support ring 3 fixedly installed at the top of the screening frame 12. A cleaning plate 31 is movably sleeved on the outside of the support ring 3. By setting the cleaning mechanism 301, the accumulated flour can be scraped off from the top of the screening frame 12, reducing waste.
[0030] Stabilizing rings 4 are fixedly installed at both the top and bottom of the movable ring 2. The two stabilizing rings 4 are respectively movably locked in the corresponding fixed rings 24. The stability of the movable ring 2 during rotation is improved by the stabilizing rings 4.
[0031] An extension ring 5 is fixedly installed on the side of each of the two fixed rings 24 that are far apart from each other. The outer side of the extension ring 5 is provided with evenly distributed fixing holes 51. By setting the extension ring 5 and the fixing holes 51, the extension ring 5 can be disassembled and installed by fixing screws, thus improving its practicality.
[0032] The outer side of the movable ring 2 is fixedly equipped with symmetrically distributed push-pull plates 6, and the inside of the feed barrel 1 is provided with symmetrically distributed third slots 61. The push-pull plates 6 are movably locked in the third slots 61. By setting the push-pull plates 6 and the third slots 61, the position of the movable ring 2 when it descends can be limited, so that the limiting plate 21 can accurately enter the limiting groove 23.
[0033] The push-pull plates 6 are arranged in an L-shape. By setting the push-pull plates 6 in an L-shape, it is convenient for staff to take the screening box 12 out of the feed hopper 1.
[0034] Working principle: In actual use, the screening frame 12 is placed into the feeding hopper 1, and the connecting ring 13 is inserted into the annular groove 14. At the same time, the limiting plate 21 is located in the limiting groove 23. By rotating the movable ring 2, the limiting plate 21 is driven to rotate, so that the limiting plate 21 is fully inserted into the limiting groove 23. While rotating, the movable ring 2 drives the connecting block 25 and the locking rod 26 to move. When the movable ring 2 rotates to a certain angle, the locking rod 26 aligns with the second locking groove 28. By pushing the locking rod 26, it is inserted into the second locking groove 28, thus completing the fixation of the movable ring 2. The installation of the screening frame 12 is accomplished by reversing the operation to disassemble the screening frame 12. When it is necessary to grind the flour, the flour is poured into the feed hopper 1. The screening frame 12 can screen out foreign objects in the flour, avoiding the inconvenience of removing foreign objects after grinding. After screening, the flour accumulated on the top of the screening frame 12 is pushed into the grinding hopper 101 by pushing the cleaning plate 31, thereby reducing waste. Then, by disassembling the screening frame 12, the staff can clean the foreign objects on the surface of the screening frame 12 for the convenience of the staff.
[0035] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A grinding device for producing ultrafine powder, comprising a grinding barrel (101), characterized in that: The grinding barrel (101) is provided with a screening mechanism (102) above it for screening foreign objects. The screening mechanism (102) is provided with a quick-release mechanism (201) on the outside for quick disassembly of the screening mechanism (102). At the same time, a cleaning mechanism (301) for removing excess powder is provided above the screening mechanism (102). The screening mechanism (102) includes a feeding barrel (1), the inside of which is provided a first slot (11), a screening frame (12) is detachably installed inside the first slot (11), a connecting ring (13) is fixedly installed at the bottom of the screening frame (12), an annular groove (14) is provided below the first slot (11), and the connecting ring (13) is movably engaged in the annular groove (14).
2. The grinding apparatus for producing ultrafine powder as described in claim 1, characterized in that, The quick-release mechanism (201) includes a movable ring (2) movably disposed on the outside of the feed hopper (1). A ring-shaped limiting plate (21) is fixedly installed on the inner wall of the movable ring (2). A ring-shaped slot (22) is provided on the outside of the feed hopper (1). The limiting plate (21) passes through the slot (22). The side of the limiting plate (21) away from the movable ring (2) is located in the ring slot (14). A uniformly distributed limiting slot (2) is provided on the outside of the connecting ring (13). 3) Two fixed rings (24) are fixedly provided on the outside of the feed barrel (1). A symmetrically distributed connecting block (25) is fixedly installed on the top of the movable ring (2). A locking rod (26) is movably provided in the middle of the connecting block (25). A symmetrically distributed limiting block (27) is fixedly installed on one end of the locking rod (26). A symmetrically distributed second slot (28) is opened on the outside of one of the fixed rings (24). The locking rod (26) and the second slot (28) are used together.
3. The grinding apparatus for producing ultrafine powder as described in claim 1, characterized in that, The cleaning mechanism (301) includes a support ring (3) fixedly installed at the top of the screening frame (12), and a cleaning plate (31) is movably sleeved on the outside of the support ring (3).
4. The grinding apparatus for producing ultrafine powder as described in claim 2, characterized in that, The top and bottom ends of the movable ring (2) are fixedly installed with stabilizing rings (4), and the two stabilizing rings (4) are respectively movably locked in the corresponding fixed rings (24).
5. The grinding apparatus for producing ultrafine powder as described in claim 4, characterized in that, An extension ring (5) is fixedly installed on each of the two fixed rings (24) on the side away from each other, and the outer side of the extension ring (5) is provided with evenly distributed fixing holes (51).
6. The grinding apparatus for producing ultrafine powder as described in claim 2, characterized in that, The outer side of the movable ring (2) is fixedly equipped with symmetrically distributed push-pull plates (6), and the inside of the feed hopper (1) is provided with symmetrically distributed third slots (61), and the push-pull plates (6) are movably locked in the third slots (61).
7. The grinding apparatus for producing ultrafine powder as described in claim 6, characterized in that, The push-pull plate (6) is distributed in an L-shape.