Paint grinding and filtering device

Abstract

The utility model relates to a paint grinding and filtering device which comprises a barrel body, a driving motor is arranged at the top of the barrel body, a driving shaft is further vertically arranged in the barrel body, a grinding assembly is arranged on the outer side wall of the driving shaft, a feeding port is formed in the top of the barrel body, and a discharging port and a recycling pipe are arranged at the bottom of the barrel body. The feed port and the recovery pipe are communicated with the interior of the cylinder body, and the discharge port is communicated with the grinding assembly; the multiple grinding cylinders and the driving shaft are combined to form a novel multi-stage grinding structure, all the grinding cylinders can be driven by only one driving source to conduct rotary grinding, in the grinding process, powder meeting the requirements in the grinding process can be independently collected through the filter screens on the top faces of the grinding cylinders, the structure is simple, the cost is low, and the grinding efficiency is high. And the grinding process and the screening process are synchronously carried out, so that the production efficiency of the paint powder is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of paint production equipment technology, specifically to a paint grinding and filtering device. Background Technology

[0002] Paint is widely used in the construction industry. This material can be applied to the surface of objects using different construction techniques to form a firmly adhering, continuous solid film with a certain strength. In the production process of paint, raw materials need to be melted, mixed, cooled, and ground into powder before further processing into paint.

[0003] In order to effectively improve the fineness of paint powder, existing grinding equipment generally adopts a multi-stage grinding structure. However, in actual use, this multi-stage grinding structure is mainly composed of multiple grinding components simply assembled. Not only does it require the addition of multiple drive devices, which further increases the cost, but the existing grinding equipment also lacks a screening structure, making it impossible to collect the powdered material that meets the requirements separately during the grinding process, which greatly affects the production efficiency of paint. Utility Model Content

[0004] Based on the above description, this utility model provides a paint grinding and filtering device to solve the problem that existing multi-stage grinding equipment is simply composed of multiple grinding structures, which requires the use of multiple driving devices, resulting in increased operating costs. Moreover, during the grinding process, it is impossible to collect the powdered material that meets the requirements separately, which affects the production efficiency of paint.

[0005] This utility model is achieved through the following technical solution:

[0006] A paint grinding and filtering device includes a cylindrical body. A drive motor is installed at the top of the cylindrical body. A drive shaft is vertically installed inside the cylindrical body. A grinding assembly is arranged on the outer wall of the drive shaft. The grinding assembly includes multiple grinding rollers sleeved on the drive shaft. Each grinding roller has a cavity inside, with a gap between the inner wall and the outer wall of the grinding roller. The cavities of the multiple grinding rollers are interconnected to form a conveying channel. The top surface of each grinding roller has an opening that is interconnected with the conveying channel, and a filter screen is arranged on the opening. The top of the cylindrical body has a feed inlet, and the bottom of the cylindrical body has a discharge outlet and a recovery pipe. The feed inlet and the recovery pipe are interconnected with the interior of the cylindrical body, and the discharge outlet is interconnected with the conveying channel.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the grinding roller is configured as an inverted cone shape, and the inner wall of the cylinder extends towards the center to form a conical space, and the gap between the outer wall of each grinding roller and the inner wall of the cylinder gradually decreases from top to bottom.

[0009] Furthermore, the outer wall of the grinding roller and the inner wall of the cylinder are provided with several mounting grooves, and the mounting grooves are provided with grinding balls, and the grinding balls are arranged in a circumferential array.

[0010] Furthermore, the surfaces of both the grinding roller and the grinding ball are sandblasted.

[0011] Furthermore, each of the grinding rollers is provided with a connecting seat at both the upper and lower ends, and the connecting seat is provided with a positioning hole. The two adjacent connecting seats are attached to each other and locked together by bolts.

[0012] Furthermore, the connecting seat is also provided with a collar, the inner wall of which is provided with a spline groove, the outer wall of the drive shaft is provided with a protrusion and inserted into the spline groove, and the outer wall of the collar is provided with a connecting rod, which is fixedly connected to the inner wall of the connecting seat.

[0013] Furthermore, the filter screen is configured as an annular shape with its surface inclined towards the center, and the top and bottom ends of the filter screen are respectively provided with connecting rings. The connecting rings are configured as ball bearings and are movably connected to the grinding roller. A fixing rod is also provided on the outer wall of the connecting ring, and the other end of the fixing rod is fixedly connected to the inner wall of the cylinder.

[0014] Furthermore, an air spring arranged in a ring structure is provided at the connection between the connecting ring and the filter screen, and a vibration motor is respectively provided on the bottom surface of the reinforcing ribs of the multiple filter screens.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0016] This application improves upon existing multi-stage grinding equipment by combining multiple grinding rollers with a drive shaft to form a new multi-stage grinding structure. This structure not only allows all grinding rollers to rotate and grind using only one drive source, but also enables the separate collection of powder that meets the requirements during the grinding process using a filter screen on the top surface of the grinding rollers. The structure is simple, and the grinding and screening processes are carried out simultaneously, effectively improving the production efficiency of paint powder. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of the cylinder in this embodiment;

[0018] Figure 2 This is a schematic diagram of the grinding assembly in this embodiment;

[0019] Figure 3 This is a front view of the interior of the cylinder in this embodiment;

[0020] Figure 4 This is a schematic diagram of the grinding roller structure in this embodiment;

[0021] Figure 5 This is a schematic diagram of the filter screen in this embodiment;

[0022] Figure 6 This is a schematic diagram of the structure of the bottom of the cylinder and the discharge port in this embodiment;

[0023] The components are as follows: 1. Cylinder; 11. Feed inlet; 12. Discharge outlet; 13. Recovery pipe; 2. Drive shaft; 3. Drive motor; 4. Grinding assembly; 41. Grinding roller; 42. Connecting seat; 43. Grinding ball; 44. Cavity; 45. Collar; 46. Connecting rod; 5. Filter screen; 51. Connecting ring; 52. Fixing rod; 53. Air spring; 54. Vibration motor. Detailed Implementation

[0024] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0026] Combination Figure 1-6 As shown, a paint grinding and filtering device includes:

[0027] The cylinder 1 is a cylindrical structure with a hollow interior and several conical spaces. It has a feed inlet 11 at the top and a discharge outlet 12 and a recovery pipe 13 at the bottom.

[0028] The drive shaft 2 is vertically installed inside the cylinder 1, and its top and bottom ends are rotatably connected to the inner wall of the cylinder 1, respectively.

[0029] The drive motor 3 is located at the center of the top surface of the cylinder 1 and is used to drive the drive shaft 2 to rotate in a specific direction.

[0030] The grinding assembly 4 is composed of multiple grinding rollers 41 connected on the drive shaft 2 and rotated synchronously by the drive shaft 2, thereby using its side wall to grind the material input into the cylinder 1 into powder and screen it.

[0031] Specifically, in this embodiment, the grinding roller 41 should also be configured as an inverted conical structure, so that its sidewall is arranged close to the conical space inside the cylinder 1, and the gap between the two is kept to gradually decrease from top to bottom, thereby forcing the material to rotate and be squeezed through the gap between the grinding roller 41 and the inside of the cylinder 1, so that it gradually becomes smaller.

[0032] To further improve the grinding effect, several mounting grooves should be arranged around the inner wall of the cylinder 1 and the outer wall of the grinding roller 41. Each mounting groove is embedded with a grinding ball 43. The grinding balls 43 on the inner wall of the cylinder 1 and the grinding balls on the outer wall of the grinding roller 41 are arranged alternately. After the material is crushed, it will be further ground by these grinding balls 43, which can effectively grind it to the required particle size.

[0033] The grinding balls 43, the inner wall of the cylinder 1, and the outer wall of the grinding roller 41 should all be sandblasted to embed materials such as diamond and quartz into their surfaces, further improving their surface roughness and enhancing their grinding effect on materials.

[0034] In this embodiment, three grinding rollers 41 are provided (the number of grinding rollers 41 can be increased or decreased according to actual needs, i.e., the selection can be made according to the actual grinding effect and the fineness required by the powder). Each grinding roller 41 has a connecting seat 42 at both ends, and the connecting seat 42 has bolt holes. At the same time, each grinding roller 41 has a cavity 44 running through its interior. The three grinding rollers 41 are spliced ​​together by bolts to connect the connecting seats 42 at both ends, so that the internal cavities 44 of the three grinding rollers 41 are interconnected, and finally form a conveying channel. The drive shaft 2 is vertically inserted into the center of the conveying channel, and a gap is left between it and the inner wall of each grinding roller 41.

[0035] In order to drive the grinding rollers 41 to rotate using the drive shaft 2, a collar 45 should be provided inside the connecting seat 42. The inner wall of the collar 45 is provided with a spline groove, and the outer wall of the drive shaft 2 is provided with a protrusion, which can be inserted into the spline groove. At the same time, the outer wall of the collar 45 is fixedly connected to the inner wall of the connecting seat 42 through the connecting rod 46. Therefore, the rotation of the drive shaft 2 can drive the three grinding rollers 41 to rotate synchronously.

[0036] In addition, each of the three grinding rollers 41 should have a bearing housing at its top and bottom to provide support and ensure that the three grinding rollers 41 can rotate flexibly.

[0037] In actual production, some materials have already reached the required fineness of powder in the first or second grinding stage. Therefore, it is necessary to use filter screen 5 to screen them separately to avoid the powder remaining inside for a long time, which would affect the subsequent material conveying speed and improve the production efficiency of paint powder.

[0038] In this embodiment, the filter screen 5 should be disposed on the top surface of the second and third grinding rollers. At the same time, the top surfaces of the two grinding rollers are respectively arranged with openings that extend inward and communicate with the cavity 44 inside the grinding rollers. Therefore, the powder can be directly discharged into the conveying channel and then discharged into the collection container through the discharge port 12 at the bottom of the cylinder 1.

[0039] The opening is set as an annular structure, and the filter screen 5 should also be set as an annular structure with its side wall facing upwards. At the same time, connecting rings 51 are provided at the top and bottom of the filter screen 5. The connecting rings 51 adopt a ball bearing structure and are connected to the grinding roller. The outer wall of the connecting rings 51 is fixedly connected to the inside of the cylinder 1 by a metal fixing rod 52. Therefore, when the roller rotates, the filter screen 5 remains stationary, preventing the powder from failing to pass through the filter screen 5 properly when rotating synchronously.

[0040] Meanwhile, based on the above structure, the tilt angle of the surface of the filter screen 5 should be set to a relatively gentle angle to avoid the material flowing too fast on its surface and causing incomplete screening of powder. When the angle approaches horizontal, it is also necessary to prevent the material from accumulating on the surface of the filter screen 5. Therefore, a vibration motor 54 should be additionally arranged on the bottom surface of the reinforcing rib plate of the filter screen 5 to improve the screening effect by means of vibration.

[0041] An inclined filter screen is also installed at the bottom of the cylinder 1 as the final filtration structure. The inclined surface is used to discharge unsuitable particles through the recovery pipe 1313 and re-inject them into the cylinder 1 for further grinding.

[0042] Since the filter screen 5 is close to the grinding structure, in order to prevent high-frequency vibration from affecting the stability of its grinding components, an air spring 53 with a ring structure should be set at the connection between the connecting ring 51 and the filter screen 5. This will use air compression to block the transmission of vibration, thereby avoiding the impact of vibration on other components while retaining the vibration effect, making the entire equipment operate more stably.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of this utility model.

Claims

1. A paint grinding and filtering device, characterized in that, The device includes a cylinder (1), a drive motor (3) is provided at the top of the cylinder (1), and a drive shaft (2) is vertically arranged inside the cylinder (1). A grinding assembly (4) is arranged on the outer wall of the drive shaft (2). The grinding assembly (4) includes multiple grinding rollers sleeved on the drive shaft (2). The grinding rollers are also provided with cavities (44) and the inner side wall is spaced from the outer wall of the grinding roller. The cavities (44) of the multiple grinding rollers are interconnected to form a conveying channel. Each grinding roller has an opening on its top surface that is interconnected with the conveying channel. A filter screen (5) is also arranged on the opening. The top of the cylinder (1) is provided with a feed inlet (11). The bottom of the cylinder (1) is provided with a discharge port (12) and a recovery pipe (13). The feed inlet (11) and the recovery pipe (13) are interconnected with the inside of the cylinder (1). The discharge port (12) is interconnected with the conveying channel.

2. The paint grinding and filtering device according to claim 1, characterized in that, The grinding roller (41) is configured as an inverted cone shape, and the inner wall of the cylinder (1) extends towards the center to form a cone-shaped space. The gap between the outer wall of each grinding roller (41) and the inner wall of the cylinder (1) gradually decreases from top to bottom.

3. The paint grinding and filtering device according to claim 2, characterized in that, The outer wall of the grinding roller (41) and the inner wall of the cylinder (1) are provided with several mounting grooves, and the mounting grooves are provided with grinding balls (43), and the grinding balls (43) are arranged in a circumferential array.

4. The paint grinding and filtering device according to claim 3, characterized in that, The surfaces of the grinding roller (41) and the grinding ball (43) are both sandblasted.

5. A paint grinding and filtering device according to claim 1, characterized in that, Each of the grinding rollers has a connecting seat (42) at both the upper and lower ends. The connecting seat (42) has a positioning hole. The two adjacent connecting seats (42) are attached to each other and locked together by bolts.

6. A paint grinding and filtering device according to claim 5, characterized in that, The connecting seat (42) is also provided with a collar (45), the inner wall of the collar (45) is provided with a spline groove, the outer wall of the drive shaft (2) is provided with a protrusion and inserted into the spline groove, the outer wall of the collar (45) is provided with a connecting rod (46), and the connecting rod (46) is fixedly connected to the inner wall of the connecting seat (42).

7. A paint grinding and filtering device according to claim 1, characterized in that, The filter screen (5) is arranged in a ring shape with its surface tilted towards the center. The top and bottom ends of the filter screen are respectively provided with connecting rings (51). The connecting rings (51) are ball bearings and are movably connected to the grinding roller. The outer side wall of the connecting rings (51) is also provided with a fixing rod (52). The other end of the fixing rod (52) is fixedly connected to the inner wall of the cylinder (1).

8. A paint grinding and filtering device according to claim 7, characterized in that, The connection between the connecting ring (51) and the filter screen (5) is also provided with an air spring (53) arranged in a ring structure, and a vibration motor (54) is provided on the bottom surface of the reinforcing ribs of the multiple filter screens (5).

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