Self-cleaning separation device for horizontal sand mill

Abstract

The utility model provides a self-cleaning separation device for a horizontal sand mill. The self-cleaning separation device comprises a water tank, a water inlet pipe and a water outlet pipe, wherein the water tank is arranged at the end, connected with a grinding cylinder, of a machine body and embedded into the machine body; the water conveying pipe is connected with the water tank and extends into a cavity of the filter screen and the grinding cylinder, and the high-pressure spray head is arranged on the side, close to the filter screen, of the water conveying pipe. According to the self-cleaning separation device for the horizontal sand mill, the self-cleaning device is arranged at the joint of the machine body and the grinding cylinder, the driving motor drives the filter screen to rotate, and the water conveying pipe conveys water in the water tank to the high-pressure spray head to clean the filter screen; the problem that in the prior art, coating is hard to clean due to the fact that the coating is dry and hard to clean in a filter screen of a horizontal sand mill is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of horizontal sand mills, in particular to a self-cleaning separation device for horizontal sand mills. Background Art

[0002] During operation, a horizontal sand mill disperses material particles in a liquid and pumps them into the grinding chamber. Inside the chamber, the agitator shaft rotates at high speed, driving the pin-type disperser and grinding media. From the moment the material enters the grinding chamber, it is continuously sheared, rubbed, and impacted by the grinding media, achieving highly efficient grinding.

[0003] However, when a horizontal sand mill is used to grind paint, it is difficult to avoid the ground paint adhering to the inner wall of the filter. When the sand mill is not used for a period of time, the paint dries inside the filter, which will affect the grinding effect. And when a different paint needs to be replaced for grinding, the paint originally attached to the filter needs to be cleaned.

[0004] There are two cleaning methods in the prior art. One is to remove the filter from the grinding cylinder and clean it separately, but this method has low cleaning efficiency. The other is to pass a solution that can dissolve the paint into the horizontal sand mill to dissolve the paint attached to the filter and then discharge it. This method requires a special solution and cannot recover the originally attached paint, which is less economical. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that the paint is dried and accumulated inside the filter screen of the horizontal sand mill and is difficult to clean.

[0006] In order to achieve the above-mentioned purpose, the present application proposes a self-cleaning separation device for a horizontal sand mill, wherein the horizontal sand mill includes: a machine body; a grinding cylinder arranged on the machine body; a stirring shaft installed in the grinding cylinder and colinear with the central axis of the grinding cylinder; rod pins arranged on the surface of the stirring shaft and evenly distributed; a filter screen covering the rod pins and at a certain distance from the inner wall of the grinding cylinder, the filter screen including a filtering area and a closed area arranged away from the end of the machine body; a self-cleaning device is arranged at the part where the machine body and the grinding cylinder are connected; wherein the self-cleaning device includes: a water tank arranged at the end where the machine body and the grinding cylinder are connected and embedded in the interior of the machine body; a water supply pipe connected to the water tank and extending to the cavity of the filter screen and the grinding cylinder, and a high-pressure nozzle arranged on the side of the water supply pipe close to the filter screen, and a drive motor is arranged inside the machine body.

[0007] The self-cleaning separation device for the horizontal sand mill of the present application is provided with a self-cleaning device at the connection portion between the machine body and the grinding cylinder. As the driving motor drives the filter to rotate, the water pipe transports water in the water tank to the high-pressure nozzle to clean the filter, thereby solving the problem in the prior art that the paint is dried and hard to clean inside the filter of the horizontal sand mill.

[0008] As an improvement of the above-mentioned water pipe of the present application, in order to improve the cleaning efficiency of the cleaning device, the water pipe is arranged on the top of the filter screen and arranged in a stepped manner along the cavity of the filter screen and the grinding cylinder.

[0009] As an improvement of the above-mentioned high-pressure nozzles of the present application, in order to ensure that there are no dead corners when cleaning the filter area, several high-pressure nozzles are grouped together, and a group of high-pressure nozzles are arranged at the end of each water pipe, and it is ensured that the high-pressure nozzles at the end of each water pipe are combined, and the length covered along the axial direction of the filter is greater than or equal to the length of the filter area.

[0010] Furthermore, in order to monitor the water inlet and pressure of the water tank, the self-cleaning separation device for the horizontal sand mill further includes: a pressure gauge and a water inlet pipe arranged on the top of the water tank and extending out of the machine body.

[0011] Furthermore, in order to realize the rotation of the filter screen, a gear portion is provided at the end of the filter area close to the body.

[0012] Furthermore, in order to transmit the power output by the driving motor to the filter screen, a driving motor is provided inside the machine body, and the output shaft of the driving motor is provided with a gear meshing with the gear tooth portion.

[0013] The beneficial effects of this application are:

[0014] 1. The self-cleaning separation device for the horizontal sand mill of the present application is provided with a self-cleaning device at the connection portion between the machine body and the grinding cylinder. As the drive motor drives the filter to rotate, the water pipe transports water in the water tank to the high-pressure nozzle to clean the filter, thereby solving the problem in the prior art that the paint is dried inside the filter of the horizontal sand mill and is difficult to clean.

[0015] 2. The water pipe and high-pressure nozzle of the present application are arranged on the top of the filter. When cleaning the lumps on the filter, the lumps attached to the inner wall of the filter will be affected by their own gravity and will fall into the filter more easily. The grinding medium can break up the lumps and recycle them when the horizontal sand mill works next time. The water pipes are arranged in a stepped manner. Since the water pipes have different lengths and the high-pressure nozzles are only arranged at the ends of the water pipes, the pressure in the water pipes is only released through the high-pressure nozzles at the ends. While meeting the water delivery function, the water pipes of different lengths can improve the stability of the pressure transmitted to the high-pressure nozzles during the water delivery process and avoid the loss of water pressure during the transmission process.

[0016] 3. The high-pressure nozzle of the present application is arranged along the axial direction of the filter, covering the filtration area on the filter, and at the same time, the filter is driven by the motor to rotate, so as to achieve the effect of cleaning the lumps on the filter. Since the filter is inherently centered during the working process of filtering the paint, the filter can be cleaned 360 degrees without rotating the self-cleaning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a distribution diagram of the water pipe and the high-pressure nozzle in the embodiment of this application;

[0019] Figure 2 This is a cross-sectional view of a self-cleaning separation device for a horizontal sand mill according to an embodiment of the present application;

[0020] Figure 3 This is a cross-sectional view of a self-cleaning separation device for a horizontal sand mill according to an embodiment of the present application;

[0021] Description of reference numerals:

[0022] 1. Body;

[0023] 2. Grinding cylinder;

[0024] 3. Stirring shaft;

[0025] 4. Rod pin;

[0026] 5. Filter screen; 51. Filter area; 52. Enclosed area; 53. Gear teeth;

[0027] 6. Self-cleaning device; 61. Water tank; 62. Water pipe; 63. High-pressure nozzle; 64. Pressure gauge; 65. Water inlet pipe;

[0028] 7. Drive motor;

[0029] 8. Gears. DETAILED DESCRIPTION

[0030] The following will be combined with the Figures 1 to 3 The embodiments of the technical solution of the present application are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application. In addition, the technical features involved in the various embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.

[0031] like Figures 1 to 3The present application illustrates a self-cleaning separation device for a horizontal sand mill, wherein the horizontal sand mill comprises: a machine body 1; a grinding cylinder 2 arranged on the machine body 1; a stirring shaft 3 installed in the grinding cylinder 2 and collinear with the central axis of the grinding cylinder 2; rod pins 4 arranged on the surface of the stirring shaft 3 and evenly distributed; a filter screen 5 covering the rod pins 4 and at a certain distance from the inner wall of the grinding cylinder 2, the filter screen 5 comprising a filtering area 51 and a closed area 52 arranged at the end away from the machine body 1; a self-cleaning device 6 is arranged at the part where the machine body 1 and the grinding cylinder 2 are connected; wherein the self-cleaning device 6 comprises: a water tank 61 arranged at the end where the machine body 1 and the grinding cylinder 2 are connected and embedded in the interior of the machine body 1; a water pipe 62 connected to the water tank 61 and extending to the cavity of the filter screen 5 and the grinding cylinder 2, and a high-pressure nozzle 63 arranged on the side of the water pipe 62 close to the filter screen 5, and a drive motor 7 is arranged inside the machine body 1.

[0032] In one embodiment of the present application, the grinding media is distributed in the filter 5. The crude paint is first passed into the filter 5. The rotation of the stirring shaft 3 drives the rod pin 4 to grind the grinding media to refine the crude paint. When the particle size of the crude paint becomes smaller, it passes through the filter holes on the filter 5, is processed by the separation system, and then flows out of the grinding cylinder 2 to complete the refinement of the material. In the cleaning device 6 introduced in this application, the water tank 61 is used to store water, and the water pipe 62 is used to transport the water in the water tank 61 to the filter area 51 of the filter 5. The high-pressure nozzle 63 sprays the water in the water pipe 62 onto the filter 5 to complete the cleaning of the lumps on the inner wall of the filter 5.

[0033] There are two cleaning methods in the prior art. One is to remove the filter from the grinding cylinder and clean it separately, but this method has low cleaning efficiency. The other is to pass a solution that can dissolve the paint into the horizontal sand mill to dissolve the paint attached to the filter and then discharge it. This method requires a special solution and cannot recover the originally attached paint, which is less economical.

[0034] In this embodiment, the self-cleaning separation device for the horizontal sand mill is provided with a self-cleaning device at the connection portion between the machine body and the grinding cylinder. As the driving motor drives the filter to rotate, the water pipe transports water in the water tank to the high-pressure nozzle to clean the filter, thereby solving the problem in the prior art that the paint is dried inside the filter of the horizontal sand mill and is difficult to clean.

[0035] Continue to refer to Figure 1 In a further embodiment, the water pipe 62 is disposed on top of the filter screen 5 and arranged in a stepped manner along the filter screen 5 and the cavity of the grinding cylinder 2. Specifically, the water pipe 62 can be arranged in a descending manner on one side or on both sides, as long as the ends of the water pipe 62 are sequentially distributed along the axial direction of the filter area 51.

[0036] Continue to refer to Figure 1In a further embodiment, the high-pressure nozzles 63 are grouped together, with one group of high-pressure nozzles 63 disposed at the end of each water pipe 62. The high-pressure nozzles 63 at the end of each water pipe 62 are arranged to cover a length along the axial direction of the filter screen 5 that is greater than or equal to the length of the filter area 51. Specifically, the high-pressure nozzles 63 disposed at the end of each water pipe 62 overlap and cover the axial direction of the filter area 51. This ensures that the water sprayed from the high-pressure nozzles 63 covers the filter holes in the filter area 51, thereby completing the cleaning of the filter holes.

[0037] The self-cleaning separation device for a horizontal sand mill also includes a pressure gauge 64 and a water inlet pipe 65, mounted on top of a water tank 61 and extending from the machine body 1. To monitor the water pressure within the water tank 61 and facilitate water addition, the pressure gauge 64 and water inlet pipe 65 are mounted on top of the water tank 61. The pressure gauge 64 extends outside the machine body 1, allowing for easy monitoring of the water pressure. The water inlet pipe 65 is used to add clean water to the water tank 61.

[0038] Further, continue to refer to Figure 2 、 Figure 3 The filter area 51 is provided with a gear portion 53 at the end near the body 1. The drive motor 7 installed inside the body 1 engages with the gear portion 53 through the gear 8 on its output shaft, thereby driving the filter screen 5 to rotate.

[0039] Further, continue to refer to Figure 2 、 Figure 3 , the output shaft of the drive motor 7 is provided with a gear 8 meshing with the gear portion 53. In actual use, when the filter screen 5 needs to be cleaned, the drive motor 7 is started to make the filter screen 5 start to rotate. At the same time, the water outlet valve of the water tank 61 is opened, and the cleaning water is transported to the high-pressure nozzle 63 through the water pipe 62. The high-pressure water column is sprayed onto the top of the filter screen 5, and the impact force of the high-pressure water flow is used to remove the paint lumps attached to the inner wall of the filter screen 5. Since the filter screen 5 is rotating and the high-pressure nozzle 63 is arranged along the axial direction of the filter screen 5, the filter screen 5 can be fully cleaned. The cleaned paint lumps fall into the grinding cylinder 2 under the action of gravity and can be broken up and recycled by the grinding medium in the next grinding process.

[0040] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "upper", "lower", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0041] In the description of the embodiments of this application, unless otherwise specified or limited, technical terms such as "disposed," "equipped with," "connected," and "installed" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integrated connections; they can be directly connected or indirectly connected through an intermediate medium. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this application based on specific circumstances.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-cleaning separation device for a horizontal sand mill, wherein the horizontal sand mill comprises: A machine body (1); a grinding cylinder (2) disposed on the machine body (1); A stirring shaft (3) is installed in a grinding cylinder (2) and is colinear with the central axis of the grinding cylinder (2); rod pins (4) are arranged on the surface of the stirring shaft (3) and are evenly distributed; a filter screen (5) covers the rod pins (4) and is at a certain distance from the inner wall of the grinding cylinder (2), the filter screen (5) comprising a filtering area (51) and a closed area (52) arranged at an end away from the body (1); the self-cleaning device (6) is characterized in that a self-cleaning device (6) is provided at a portion where the body (1) and the grinding cylinder (2) meet; wherein the self-cleaning device (6) comprises: a water tank (61) provided at the end where the body (1) and the grinding cylinder (2) meet and is embedded in the body (1); a water pipe (62) connected to the water tank (61) and extending to the cavity between the filter screen (5) and the grinding cylinder (2); and a high-pressure nozzle (63) provided on the side of the water pipe (62) close to the filter screen (5); and a driving motor (7) is provided inside the body (1).

2. The self-cleaning separation device for a horizontal sand mill according to claim 1, characterized in that: The water delivery pipe (62) is arranged on the top of the filter screen (5) and is arranged in a stepped manner along the filter screen (5) and the cavity of the grinding cylinder (2).

3. The self-cleaning separation device for a horizontal sand mill according to claim 1, characterized in that: The high-pressure nozzles (63) are arranged in groups, with a group of high-pressure nozzles (63) arranged at the end of each water pipe (62). The high-pressure nozzles (63) at the end of each water pipe (62) are combined to ensure that the length covered along the axial direction of the filter screen (5) is greater than or equal to the length of the filter area (51).

4. The self-cleaning separation device for a horizontal sand mill according to claim 1, characterized in that: The self-cleaning separation device for a horizontal sand mill further comprises: a pressure gauge (64) and a water inlet pipe (65) arranged on the top of a water tank (61) and extending out of the machine body (1).

5. The self-cleaning separation device for a horizontal sand mill according to claim 1, characterized in that: The filter area (51) is provided with a gear portion (53) at the end close to the machine body (1).

6. The self-cleaning separation device for a horizontal sand mill according to claim 1 or 5, characterized in that: The output shaft of the driving motor (7) is provided with a gear (8) meshing with the gear tooth portion (53).

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