Multi-stage grinding mechanism for powder coating preparation

Abstract

The invention relates to the field of powder coating preparation, in particular to a multi-stage grinding mechanism for powder coating preparation, which comprises a grinding machine body, a fixed shaft is vertically arranged in the middle of the grinding machine body, the fixed shaft is driven by a driving motor, and a fixed ring is fixedly mounted on the upper middle part of the grinding machine body and outside the fixed shaft; a filter screen frame is fixedly mounted outside the fixing shaft and below the fixing ring in the grinding machine body, a first grinding groove is formed in the top end of the fixing ring, and a second grinding groove is formed in the position, below the first grinding groove, in the fixing ring; according to the powder coating multi-stage grinding device, the grinding assembly is matched with the fixing ring, the filter screen frame, the fixing shaft and the driving motor, powder coating can be subjected to multi-stage grinding and then subjected to filtering and screening treatment, it is ensured that the particle size distribution of powder coating particles is more uniform, and too large or too small particles are avoided; and powder coating particles can be ground to be finer.

Description

Technical Field

[0001] The invention relates to the technical field of powder coating preparation, in particular to a multi-stage grinding mechanism for powder coating preparation. Background Art

[0002] Powder coating is a new type of solvent-free 100% solid powder coating that exists in the state of fine powder.

[0003] The powder coating grinder is a grinding equipment specially used for the production of powder coating.

[0004] Most of the existing grinders only grind the powder coating once, which may result in poor grinding effect. In addition, the powder coating may contain particles that are not ground evenly, resulting in uneven particle size distribution of the powder coating. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a multi-stage grinding mechanism for preparing powder coatings.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A multi-stage grinding mechanism for preparing powder coatings, comprising a grinding machine body, a fixed shaft is vertically arranged in the middle of the grinding machine body, the fixed shaft is driven by a driving motor, a fixed ring is fixedly installed outside the fixed shaft at the upper middle part of the grinding machine body, a filter screen frame is fixedly installed outside the fixed shaft and below the fixed ring in the grinding machine body, a first grinding groove is opened at the top of the fixed ring, and a second grinding groove is opened in the fixed ring below the first grinding groove;

[0008] The outer wall of the fixed shaft is located at the fixed ring and a fixed sleeve is provided with a grinding assembly, the grinding assembly includes a first grinding block, the bottom of the first grinding block is connected to the second grinding block, the left and right sides of the bottom of the second grinding block are connected to the grinding plate through the fixed block, a plurality of fifth grinding convex balls are fixedly installed at equal distances on the bottom of the grinding plate, and the front and rear sides of the bottom of the second grinding block are connected to the fixed plate through the fixed block, and a scraper is arranged at the bottom of the fixed plate.

[0009] Preferably, a plurality of grinding protrusions are installed at equal distances on the outer wall of the first grinding block, and a guide ring is fixedly installed on the top of the first grinding block. The guide ring and the first grinding block are both cone-shaped, and the diameter of the top of the guide ring is smaller than the diameter of the bottom, and the diameter of the top of the first grinding block is larger than the diameter of the bottom.

[0010] Preferably, a plurality of auxiliary grinding protrusions are equidistantly arranged on the inner wall of the first grinding groove, and the first grinding groove and the second grinding groove are both cone-shaped, and the diameter of the top of the second grinding groove is smaller than the diameter of the bottom, and the diameter of the top of the first grinding groove is larger than the diameter of the bottom.

[0011] Preferably, three groups of auxiliary grinding components are equidistantly arranged on the inner wall of the second grinding groove, and the auxiliary grinding components include a plurality of auxiliary grinding convex balls, one side of the auxiliary grinding convex balls is connected to the inner wall of the second grinding groove.

[0012] Preferably, the second grinding block is cone-shaped, and the diameter of the top of the second grinding block is smaller than the diameter of the bottom, and the outer wall of the second grinding block is located between two adjacent groups of auxiliary grinding components, and the first grinding component component and the second grinding component component are respectively arranged.

[0013] Preferably, the first grinding component assembly includes a plurality of first grinding convex balls, one side of the first grinding convex balls is connected to the outer wall of the second grinding block, the second grinding component assembly includes a plurality of second grinding convex balls, one side of the second grinding convex balls is connected to the outer wall of the second grinding block, and the diameter of the first grinding convex balls is smaller than the diameter of the second grinding convex balls.

[0014] Preferably, a through hole is formed in the filter frame at the fixed axis, and a limiting ring is fixedly installed on the top of the filter frame outside the through hole, and filter through holes are formed at equal distances in the bottom of the filter frame.

[0015] The beneficial effects of the present invention are:

[0016] In the present invention, by coordinating the grinding assembly with the fixed ring and the filter frame as well as the fixed shaft and the drive motor, the powder coating can be subjected to multi-stage grinding and filtering and screening treatment, thereby ensuring that the particle size distribution of the powder coating particles is more uniform, avoiding the occurrence of overly large or undersized particles, and grinding the powder coating particles to be finer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the cross-sectional structure of a multi-stage grinding mechanism for preparing powder coatings proposed by the present invention Figure 1 ;

[0018] Figure 2 A schematic diagram of the cross-sectional structure of a multi-stage grinding mechanism for preparing powder coatings proposed by the present invention Figure 2 ;

[0019] Figure 3 Schematic diagram of the structure of the grinding assembly, fixing ring, and filter frame cross section Figure 1 ;

[0020] Figure 4 Schematic diagram of the structure of the grinding assembly, fixing ring, and filter frame cross section Figure 2 ;

[0021] Figure 5 A schematic diagram of the structure of the grinding assembly.

[0022] In the figure: 1. grinding body; 2. fixing ring; 21. first grinding groove; 22. auxiliary grinding protrusion; 23. second grinding groove; 24. auxiliary grinding convex ball; 3. grinding assembly; 31. guide ring; 32. first grinding block; 33. grinding protrusion; 34. second grinding block; 35. first grinding convex ball; 36. second grinding convex ball; 37. grinding plate; 371. third grinding convex ball; 38. fixing plate; 381. scraper; 4. fixing shaft; 41. driving motor; 5. filter frame. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figure 1-5 A multi-stage grinding mechanism for preparing powder coatings, comprising a grinding machine body 1, a fixed shaft 4 is vertically arranged in the middle of the grinding machine body 1, the fixed shaft 4 is driven by a driving motor 41, and a fixed ring 2 is fixedly installed outside the fixed shaft 4 in the upper middle part of the grinding machine body 1, a filter screen frame 5 is fixedly installed outside the fixed shaft 4 and below the fixed ring 2 in the grinding machine body 1, a first grinding groove 21 is opened at the top of the fixed ring 2, and a second grinding groove 23 is opened in the fixed ring 2 below the first grinding groove 2;

[0025] In addition, a grinding assembly 3 is fixedly sleeved on the outer wall of the fixed shaft 4 at the fixed ring 2, and the grinding assembly 3 includes a first grinding block 32, and the bottom of the first grinding block 32 is connected to a second grinding block 34, and the left and right sides of the bottom of the second grinding block 34 are connected to a grinding plate 37 through a fixed block, and a plurality of fifth grinding convex balls 371 are fixedly installed at the bottom of the grinding plate 37 at equal distances, and the front and rear sides of the bottom of the second grinding block 34 are connected to a fixed plate 38 through a fixed block, and a scraper 381 is provided at the bottom of the fixed plate 38, and the bottom of the scraper 381 is in contact with the top of the filter screen frame 5, and the bottom of the fifth grinding convex ball 371 is not in contact with the top of the filter screen frame 5.

[0026] At the same time, a plurality of grinding protrusions 33 are installed at equal distances on the outer wall of the first grinding block 32, and a guide ring 31 is fixedly installed on the top of the first grinding block 32. The guide ring 31 and the first grinding block 32 are both cones, and the diameter of the top of the guide ring 31 is smaller than the diameter of the bottom, and the diameter of the top of the first grinding block 32 is larger than the diameter of the bottom.

[0027] At the same time, a plurality of auxiliary grinding protrusions 22 are arranged at equal distances on the inner wall of the first grinding groove 21, and the first grinding groove 21 and the second grinding groove 23 are both cone-shaped, and the diameter of the top of the second grinding groove 23 is smaller than the diameter of the bottom, and the diameter of the top of the first grinding groove 21 is larger than the diameter of the bottom.

[0028] Furthermore, three groups of auxiliary grinding components are equidistantly arranged on the inner wall of the second grinding groove 23 , and the auxiliary grinding components include a plurality of auxiliary grinding convex balls 24 , one side of the auxiliary grinding convex balls 24 is connected to the inner wall of the second grinding groove 23 .

[0029] Furthermore, the second grinding block 34 is cone-shaped, and the diameter of the top of the second grinding block 34 is smaller than the diameter of the bottom. The outer wall of the second grinding block 34 is located between two adjacent groups of auxiliary grinding components, and the first grinding component component and the second grinding component component are respectively arranged.

[0030] Furthermore, the first grinding component assembly includes multiple first grinding convex balls 35, one side of the first grinding convex ball 35 is connected to the outer wall of the second grinding block 34, and the second grinding component assembly includes multiple second grinding convex balls 36, one side of the second grinding convex ball 36 is connected to the outer wall of the second grinding block 34, and the diameter of the first grinding convex ball 35 is smaller than the diameter of the second grinding convex ball 36.

[0031] Furthermore, a through hole is formed in the filter frame 5 at the fixed shaft 4, and a limiting ring is fixedly installed outside the through hole at the top of the filter frame 5, and filter through holes are formed at equal distances in the bottom of the filter frame 5.

[0032] In addition, a feed port is provided on one side of the top of the grinding body 1, a discharge port is opened at the bottom of the grinding body 1, and the discharge port is equipped with a discharge valve, and the bottom of the fixed shaft is connected to a support ring through a bearing, and a plurality of support rods are installed on the outer wall of the support ring at equal distances, and the other side of the support rod is connected to the inner wall of the grinding body 1, and the support rod can support the bottom of the fixed shaft 41 to ensure the stability of the fixed shaft 4 when it rotates.

[0033] At the same time, it is worth noting that the distance between the grinding protrusion 33 of the first grinding block and the auxiliary grinding protrusion 22 is greater than the distance between the first grinding protrusion 35 and the auxiliary grinding protrusion 24, the distance between the first grinding protrusion 35 and the auxiliary grinding protrusion 24 is greater than the distance between the second grinding block 34 and the auxiliary grinding protrusion 24, and the distance between the second grinding block 34 and the auxiliary grinding protrusion 24 is greater than the distance between the third grinding protrusion 371 and the bottom of the filter frame 5.

[0034] In the present invention, the powder coating is poured in through the feed port, and then the drive motor 41 is turned on by control, and the drive motor 41 drives its fixed shaft 4 to rotate, thereby driving its grinding assembly 3 to rotate.

[0035] Among them, through the setting of the guide ring 31, the powder coating entering the grinding machine body 1 can be guided to move the powder coating into the first grinding groove 21, and then the powder coating is rubbed by the grinding protrusion 33 of the first grinding block and the auxiliary grinding protrusion 22 in the first grinding groove 21, so as to perform preliminary grinding on the powder coating, and the powder coating after preliminary grinding falls into the second grinding groove 23 along the gap between the grinding protrusion 33 of the first grinding block and the auxiliary grinding protrusion 22 in the first grinding groove 21, and then the powder coating is rubbed by the first grinding protrusion 35, the second grinding protrusion 36 of the second grinding block 34 and the auxiliary grinding protrusion of the second grinding groove 23, so as to perform further grinding on the powder coating.

[0036] After further grinding, the powder coating falls into the filter frame 5 along the gap between the first grinding convex ball 35, the second grinding convex ball 36 of the second grinding block 34 and the auxiliary grinding convex ball of the second grinding groove 23, and then the powder coating is rubbed by the third grinding convex ball 371 of the grinding plate 37 and the bottom of the filter frame 5, so as to perform a deeper grinding treatment on the powder coating, and the ground powder coating is moved to the filter through hole through the scraper 381, and moves along the filter through hole to the bottom of the grinding machine body 1, and finally discharged together through the discharge valve.

[0037] In the present invention, by cooperating with the grinding assembly 3, the fixing ring 2, the filter frame 5, the fixing shaft 4 and the driving motor 41, the powder coating can be subjected to multi-stage grinding and filtering and screening treatment, ensuring that the particle size distribution of the powder coating particles is more uniform, avoiding the occurrence of oversized or undersized particles, and grinding the powder coating particles to be finer.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-stage grinding mechanism for preparing powder coatings, comprising a grinding body (1), characterized in that: A fixed shaft (4) is vertically arranged in the middle of the grinding machine body (1), the fixed shaft (4) is driven by a driving motor (41), and a fixed ring (2) is fixedly installed outside the fixed shaft (4) at an upper middle portion of the grinding machine body (1), a filter screen frame (5) is fixedly installed outside the fixed shaft (4) and below the fixed ring (2) in the grinding machine body (1), a first grinding groove (21) is provided at the top of the fixed ring (2), and a second grinding groove (23) is provided in the fixed ring (2) below the first grinding groove (2); The outer wall of the fixed shaft (4) is fixedly sleeved with a grinding assembly (3) at the fixed ring (2), and the grinding assembly (3) comprises a first grinding block (32), the bottom of the first grinding block (32) is connected to a second grinding block (34), the left and right sides of the bottom of the second grinding block (34) are connected to a grinding plate (37) via a fixed block, a plurality of fifth grinding convex balls (371) are fixedly installed at equal distances on the bottom of the grinding plate (37), and the front and rear sides of the bottom of the second grinding block (34) are connected to a fixed plate (38) via a fixed block, and a scraper (381) is provided at the bottom of the fixed plate (38).

2. A multi-stage grinding mechanism for preparing powder coating according to claim 1, characterized in that: The outer wall of the first grinding block (32) is provided with a plurality of grinding protrusions (33) at equal distances, and a guide ring (31) is fixedly installed on the top of the first grinding block (32); the guide ring (31) and the first grinding block (32) are both cone-shaped, and the diameter of the top of the guide ring (31) is smaller than the diameter of the bottom, and the diameter of the top of the first grinding block (32) is larger than the diameter of the bottom.

3. A multi-stage grinding mechanism for preparing powder coating according to claim 1, characterized in that: A plurality of auxiliary grinding protrusions (22) are arranged at equal distances on the inner wall of the first grinding groove (21), and the first grinding groove (21) and the second grinding groove (23) are both cone-shaped, and the diameter of the top of the second grinding groove (23) is smaller than the diameter of the bottom, while the diameter of the top of the first grinding groove (21) is larger than the diameter of the bottom.

4. A multi-stage grinding mechanism for preparing powder coating according to claim 3, characterized in that: Three groups of auxiliary grinding components are arranged at equal distances on the inner wall of the second grinding groove (23), and the auxiliary grinding components include a plurality of auxiliary grinding convex balls (24), one side of the auxiliary grinding convex balls (24) is connected to the inner wall of the second grinding groove (23).

5. A multi-stage grinding mechanism for preparing powder coating according to claim 1, characterized in that: The second grinding block (34) is in the shape of a cone, and the diameter of the top of the second grinding block (34) is smaller than the diameter of the bottom. The outer wall of the second grinding block (34) is located between two adjacent groups of auxiliary grinding components and is respectively provided with a first grinding component component and a second grinding component component.

6. A multi-stage grinding mechanism for preparing powder coating according to claim 5, characterized in that: The first grinding component assembly comprises a plurality of first grinding convex balls (35), one side of each of which is connected to the outer wall of the second grinding block (34); the second grinding component assembly comprises a plurality of second grinding convex balls (36), one side of each of which is connected to the outer wall of the second grinding block (34); and the diameter of the first grinding convex balls (35) is smaller than the diameter of the second grinding convex balls (36).

7. A multi-stage grinding mechanism for preparing powder coating according to claim 1, characterized in that: A through hole is provided in the filter frame (5) at the fixed shaft (4), and a limit ring is fixedly installed on the top of the filter frame (5) outside the through hole, and filter through holes are provided at equal intervals in the bottom of the filter frame (5).

Images