Sand mill for coating

Abstract

The utility model discloses a sand mill for coating, which relates to the technical field of coating processing and comprises a base, a machine body arranged above the base, a grinding barrel arranged on one side of the machine body, a cleaning component arranged inside the grinding barrel and comprising a cleaning liquid storage tank, a connecting pipeline, a circulating pipeline and a delivery pump. One end of the connecting pipeline is connected with the cleaning solution storage tank, the other end of the connecting pipeline is connected with the grinding barrel, one end of the circulating pipeline is connected with the connecting pipeline, and the other end of the circulating pipeline is connected with one end of the grinding barrel. Through the steps of automatic cleaning liquid injection, circulating washing, impurity filtering, forced air drying and the like, comprehensive and efficient cleaning and drying of the grinding barrel are achieved, the product quality in the grinding process is improved, the service life of equipment is prolonged, the production efficiency and the product uniformity are remarkably improved, and the production cost is reduced. Due to the automatic and precise control characteristics, manual intervention is reduced, it is ensured that the cleaning process is accurate, and the maintenance cost of the sand mill is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coating processing, in particular to a sand grinder for coating. Background Art

[0002] In the coatings industry, sand mills are key equipment, widely used in the dispersion, grinding, and refinement of pigments, playing a vital role in the quality of the final coating product. However, with the expansion of coatings production scale and the improvement of production efficiency, the cleaning and maintenance methods of traditional coatings sand mills have gradually revealed their limitations.

[0003] First, after completing the grinding task, the traditional sand mill often relies on manual cleaning, including manually injecting cleaning fluid, using a brush or scraper to clean the inner wall of the grinding barrel and the residue on the surface of the grinding medium. This method is not only labor-intensive and inefficient, but the cleaning effect is often affected by the operator's skills and experience, and it is difficult to ensure the thoroughness and consistency of cleaning. Secondly, during the manual cleaning process, the amount of cleaning fluid is difficult to accurately control, which easily leads to waste of cleaning fluid and increases production costs. At the same time, if the wastewater generated during the cleaning process is directly discharged without proper treatment, it will also pollute the environment. It does not meet the requirements of green and sustainable development of modern industry. Moreover, due to incomplete or untimely cleaning, pigment particles or other impurities from the previous batch may remain in the grinding barrel. These residues may become a new source of pollution in the subsequent grinding process, affecting the quality and uniformity of the new batch of coatings. In the long run, it may also cause corrosion or wear to the grinding barrel and grinding media, shortening the service life of the equipment. In addition, the cleaning and maintenance of traditional sand mills are also faced with problems such as high maintenance costs, high failure rates and long production downtime. Frequent shutdowns for cleaning not only reduce production efficiency, but also increase the complexity and cost of equipment maintenance.

[0004] In summary, in order to overcome the shortcomings of traditional paint sand mills in cleaning and maintenance, improve production efficiency and product quality, reduce production costs and maintenance costs, and meet environmental protection requirements, it is particularly important to develop a device that can automatically, efficiently, thoroughly and environmentally friendly clean sand mills. Utility Model Content

[0005] Technical issues

[0006] After grinding, traditional sand mills often rely on manual cleaning, including manually injecting cleaning fluid and using a brush or scraper to remove residue from the inner wall of the grinding barrel and the surface of the grinding media. This method is not only labor-intensive and inefficient, but the cleaning effect is often affected by the operator's skills and experience, making it difficult to ensure thoroughness and consistency in cleaning.

[0007] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a sand grinder for coatings.

[0008] Technical Solution

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sand grinder for paint, comprising a base, a body arranged above the base, a grinding barrel arranged on one side of the body, a cleaning component arranged inside the grinding barrel, the cleaning component comprising a cleaning liquid storage tank, a connecting pipe, a first electric valve, a circulation pipe and a delivery pump, the cleaning liquid storage tank being arranged on the top surface of the body, one end of the connecting pipe being connected to the cleaning liquid storage tank, the other end of the connecting pipe being connected to the grinding barrel, the first electric valve being arranged on the connecting pipe, one end of the circulation pipe being connected to the connecting pipe, the other end of the circulation pipe being connected to one end of the grinding barrel, the delivery pump being arranged on the connecting pipe, and the circulation pipe being provided with a second electric valve.

[0010] Furthermore, the cleaning component also includes a filter box, a filter plate and a sewage pipe. The filter box is arranged on the circulation pipe, the filter box is connected to the circulation pipe, the filter plate is arranged inside the filter plate, one end of the sewage pipe is connected to the bottom surface of the filter, and a third electric valve is provided on the sewage pipe.

[0011] Furthermore, the cleaning component also includes a discharge pipe and a fourth electric valve. One end of the discharge pipe is connected to the bottom of one end of the grinding barrel. The fourth electric valve is arranged on the discharge pipe. A filter is provided at the connection between the discharge pipe and the grinding barrel.

[0012] Furthermore, the cleaning component also includes a blower, an air supply pipe and a fifth electric valve. The blower is arranged at the top of the machine body, one end of the air supply pipe is connected to the blower, and the other end of the air supply pipe is connected to the connecting pipe. The fifth electric valve is arranged on the air supply pipe.

[0013] Furthermore, a drive motor and a gearbox are provided inside the body, the drive motor is fixedly connected to the inner wall of the body, the output end of the drive motor is fixedly connected to the input end of the gearbox, a main shaft is provided inside the grinding barrel, one end of the main shaft is fixedly connected to the output end of the gearbox, a plurality of dispersion disks are provided on the main shaft, one end of the grinding barrel is connected to a discharge pipe, a filtering structure is provided inside the grinding barrel, and the filtering structure is provided on one side of the discharge pipe.

[0014] Furthermore, a heat-conducting cylinder is provided on the outside of the grinding barrel, and a heat-conducting plate is provided on the side wall of the heat-conducting cylinder. The heat-conducting plates are provided in multiple groups, and the multiple groups of heat-conducting plates are evenly distributed. The heat-conducting plates are fixedly connected to the heat-conducting cylinder, and a cooling cylinder is provided on the outside of the heat-conducting cylinder, and the heat-conducting plates are arranged inside the cooling cylinder.

[0015] Furthermore, a water outlet pipe is provided at the top of the side wall of the cooling cylinder, a water inlet pipe is provided at the bottom section of the side wall of the cooling cylinder, and multiple groups of flow holes are provided on the multiple groups of heat conduction plates, and the multiple groups of flow holes are evenly distributed.

[0016] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0017] 1. The cleaning component provided by the present invention is different from the prior art, in that the cleaning process of the paint sand grinder often relies on manual operation, which is not only inefficient but also difficult to ensure the thoroughness and consistency of cleaning. In addition, the waste of cleaning fluid and wastewater discharge are also problems that need to be solved urgently in the prior art. At the same time, due to incomplete or untimely cleaning, residues in the grinding barrel may affect the subsequent grinding quality and even shorten the service life of the equipment. The present invention realizes comprehensive and efficient cleaning and drying of the grinding barrel through the steps of automatic injection of cleaning fluid, circulating flushing, impurity filtering and blower drying, which not only improves the product quality and equipment service life of the grinding process, but also significantly improves production efficiency and product uniformity. Its automation and precise control characteristics reduce manual intervention and ensure the accuracy of the cleaning process. At the same time, the recycling of cleaning fluid and the energy-saving and efficient cleaning process meet environmental protection requirements, reduce resource consumption and wastewater discharge. In addition, the cleaning component also reduces the maintenance cost of the sand mill, reduces the failure rate and production downtime.

[0018] 2. The utility model sets a heat-conducting cylinder to fit tightly against the grinding barrel, and uses multiple groups of evenly distributed heat-conducting plates to quickly disperse and transfer the heat generated during the grinding process into the cooling cylinder. A circulating cooling water system is set inside the cooling cylinder, and the circulation of cooling water is achieved through the water inlet pipe and the water outlet pipe. The cooling water absorbs heat when flowing through the flow holes on the heat-conducting plate, effectively reducing the temperature of the grinding barrel and its surrounding environment, which not only improves the stability of the grinding process, prevents changes in material properties and equipment damage caused by excessive temperature, but also ensures continuous and efficient grinding efficiency. In addition, by adjusting the flow and temperature of the cooling water, more precise temperature control can be achieved to meet the needs of different grinding processes, thereby improving the quality and production efficiency of coating products.

[0019] Other advantages, objectives and features of the present invention will be described in part in the following description and will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the bottom structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the internal structure of the utility model.

[0024] In the figure: 1. Base; 2. Machine body; 3. Cleaning liquid storage tank; 4. Connecting pipe; 5. First electric valve; 6. Circulation pipe; 7. Delivery pump; 8. Second electric valve; 9. Filter box; 10. Filter plate; 11. Sewage pipe; 12. Third electric valve; 13. Discharge pipe; 14. Fourth electric valve; 15. Blower; 16. Air supply pipe; 17. Fifth electric valve; 18. Drive motor; 19. Gearbox; 20. Main shaft; 21. Dispersion disc; 22. Discharge pipe; 23. Filter structure; 24. Heat conduction cylinder; 25. Heat conduction plate; 26. Cooling cylinder; 27. Water outlet pipe; 28. Water inlet pipe; 29. ​​Circulation hole; 30. Grinding barrel. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figure 1-2As shown, the utility model provides a technical solution: a sand grinder for paint, comprising a base 1, an organic body 2 is arranged above the base 1, a grinding barrel 30 is arranged on one side of the organic body 2, a cleaning component is arranged inside the grinding barrel 30, the cleaning component comprises a cleaning liquid storage tank 3, a connecting pipe 4, a first electric valve 5, a circulation pipe 6 and a delivery pump 7, the cleaning liquid storage tank 3 is arranged on the top surface of the organic body 2, one end of the connecting pipe 4 is connected to the cleaning liquid storage tank 3, the other end of the connecting pipe 4 is connected to the grinding barrel 30, the first electric valve 5 is arranged on the connecting pipe 4, one end of the circulation pipe 6 is connected to the connecting pipe 4, the other end of the circulation pipe 6 is connected to one end of the grinding barrel 30, the delivery pump 7 is arranged on the connecting pipe 4, the circulation pipe 6 is provided with a second electric valve 8, the cleaning component also includes a filter box 9, a filter plate 10 and a sewage discharge Pipe 11, the filter box 9 is arranged on the circulation pipe 6, the filter box 9 is connected to the circulation pipe 6, the filter plate 10 is arranged inside the filter plate 10, one end of the sewage pipe 11 is connected to the bottom surface of the filter, and the sewage pipe 11 is provided with a third electric valve 12. The cleaning component also includes a discharge pipe 13 and a fourth electric valve 14. One end of the discharge pipe 13 is connected to the bottom of one end of the grinding barrel 30. The fourth electric valve 14 is arranged on the discharge pipe 13, and a filter is provided at the connection between the discharge pipe 13 and the grinding barrel 30. The cleaning component also includes a blower 15, an air supply pipe 16 and a fifth electric valve 17. The blower 15 is arranged at the top of the body 2, one end of the air supply pipe 16 is connected to the blower 15, and the other end of the air supply pipe 16 is connected to the connecting pipe 4. The fifth electric valve 17 is arranged on the air supply pipe 16.

[0027] During operation, the cleaning liquid storage tank 3 can be used to store the cleaning liquid. When the grinding barrel 30 needs to be cleaned, the first electric valve 5 is first controlled to open. The cleaning liquid in the cleaning liquid storage tank 3 is injected into the grinding barrel 30 through the connecting pipe 4 under the action of the delivery pump 7. After the cleaning liquid is mixed with the residual paint or impurities in the grinding barrel 30, it flows back to the filter box 9 through the circulation pipe 6. At this time, the second electric valve 8 is opened to allow the mixed liquid to enter the circulation. The mixed liquid flowing back to the filter box 9 is filtered through the filter plate 10, and larger impurities or particles are retained on the filter plate 10, while the cleaning liquid continues to flow through the filter plate 10. The filtered cleaning liquid can be recycled or discharged. If discharge is selected, the third electric valve 12 is opened to discharge the cleaning liquid containing impurities through the sewage pipe 11, and the cleaning is completed. Finally, in order to completely empty the residual liquid in the grinding barrel 30, the fourth electric valve 14 is opened, and the residual liquid at the bottom of the grinding barrel 30 is discharged through the discharge pipe 13. A filter is provided at the connection between the discharge pipe 13 and the grinding barrel 30 to prevent the grinding medium (such as sand particles) from being discharged. After the residual liquid is discharged, in order to accelerate the drying process of the grinding barrel 30, the blower 15 and the fifth electric valve 17 can be turned on. The wind generated by the blower 15 is sent into the connecting pipe 4 through the air supply pipe 16, and then enters the grinding barrel 30 to dry the grinding barrel 30, thereby achieving comprehensive cleaning and drying of the sand mill grinding barrel 30, effectively removing residual paint and impurities generated during the grinding process, ensuring the cleanliness of the sand mill and the smooth progress of subsequent work, and at the same time, through the control of the electric valve, the automation and precision of the cleaning process are achieved.

[0028] like Figure 4 As shown, a drive motor 18 and a gearbox 19 are provided inside the body 2. The drive motor 18 is fixedly connected to the inner wall of the body 2, and the output end of the drive motor 18 is fixedly connected to the input end of the gearbox 19. A main shaft 20 is provided inside the grinding barrel 30, and one end of the main shaft 20 is fixedly connected to the output end of the gearbox 19. A plurality of dispersion discs 21 are provided on the main shaft 20, and one end of the grinding barrel 30 is connected to a discharge pipe 22. A filtering structure 23 is provided inside the grinding barrel 30, and the filtering structure 23 is provided on one side of the discharge pipe 22.

[0029] During operation, when the motor starts, the rotational power it generates is processed by the gear set of the gearbox 19 for speed change to meet the needs of the grinding work. The gearbox 19 smoothly transmits the adjusted power to the main shaft 20. As the main shaft 20 rotates, the dispersion disk 21 rotates at a certain speed in the grinding barrel 30, which produces strong shearing, collision and friction effects on the material. This effect helps to refine the material and promotes the full mixing and contact of the material with the grinding medium. After the ground and dispersed material reaches a certain fineness and uniformity in the grinding barrel 30, it is discharged through the discharge pipe 22. During the discharge process, the material needs to pass through the filtering effect of the filtering structure 23 to remove large particles of impurities or incompletely ground materials.

[0030] like Figure 3 As shown, a heat-conducting cylinder 24 is provided on the outside of the grinding barrel 30, and a heat-conducting plate 25 is provided on the side wall of the heat-conducting cylinder 24. There are multiple groups of heat-conducting plates 25, and the multiple groups of heat-conducting plates 25 are evenly distributed. The heat-conducting plates 25 are fixedly connected to the heat-conducting cylinder 24. A cooling cylinder 26 is provided on the outside of the heat-conducting cylinder 24, and the heat-conducting plates 25 are provided inside the cooling cylinder 26. A water outlet pipe 27 is provided at the top end of the side wall of the cooling cylinder 26, and a water inlet pipe 28 is provided on the side wall section of the cooling cylinder 26. Multiple groups of circulation holes 29 are provided on the multiple groups of heat-conducting plates 25, and the multiple groups of circulation holes 29 are evenly distributed.

[0031] Specifically, the heat-conducting cylinder 24 is tightly fitted with the grinding barrel 30, and multiple groups of evenly distributed heat-conducting plates 25 are used to quickly disperse and transfer the heat generated during the grinding process to the cooling cylinder 26. A circulating cooling water system is provided inside the cooling cylinder 26, and the circulation of cooling water is achieved through the water inlet pipe 28 and the water outlet pipe 27. The cooling water absorbs heat when flowing through the flow holes 29 on the heat-conducting plate 25, effectively reducing the temperature of the grinding barrel 30 and its surrounding environment, which not only improves the stability of the grinding process, prevents changes in material properties and equipment damage caused by excessive temperature, but also ensures continuous and efficient grinding efficiency. In addition, by adjusting the flow and temperature of the cooling water, more precise temperature control can be achieved to meet the needs of different grinding processes, thereby improving the quality and production efficiency of coating products.

[0032] Working principle: First, the driving motor 18 inside the body 2 transmits power to the main shaft 20 through the gearbox 19. The multiple groups of dispersion discs 21 set on the main shaft 20 rotate in the grinding barrel 30, and perform strong shearing, collision and friction on the material to achieve fine grinding and dispersion of the material. In this process, the filtering structure 23 inside the grinding barrel 30 ensures the fineness and uniformity of the ground material, and removes large particles of impurities. In order to cope with the heat generated during the grinding process, a heat-conducting cylinder 24 is set outside the grinding barrel 30. The cylinder quickly disperses and transfers the heat to the outside through multiple groups of heat-conducting plates 25 on the side wall. The flow holes 29 on the heat-conducting plates 25 allow cooling water to circulate in the cooling cylinder 26, and heat exchange is achieved. The function is to absorb and take away the heat from the heat conducting plate 25. The water inlet pipe 28 and the water outlet pipe 27 of the cooling cylinder 26 constitute a cooling water circulation system to ensure the continuous and efficient cooling effect. In addition, the sand mill is also equipped with a cleaning component, which realizes automatic cleaning of the inside of the grinding barrel 30 through components such as the cleaning liquid storage tank 3, the connecting pipe 4, the circulation pipe 6, and the delivery pump 7. The cleaning liquid is injected into the grinding barrel 30 under the action of the delivery pump 7, and after mixing with the residual paint and impurities, it enters the filter box 9 through the circulation pipe 6 for filtration. The filtered cleaning liquid can be recycled or discharged again. At the same time, the combination of the blower 15 and the air supply pipe 16 is used to blow dry the grinding barrel 30 to ensure thorough cleaning.

[0033] It should be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate positions or location relationships based on the positions or location relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", and "connected" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "connected" can be a direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sand grinder for coatings, comprising a base (1), characterized in that: An organic body (2) is arranged above the base (1), a grinding barrel (30) is arranged on one side of the organic body (2), and a cleaning component is arranged inside the grinding barrel (30), the cleaning component comprising a cleaning liquid storage tank (3), a connecting pipe (4), a first electric valve (5), a circulation pipe (6) and a delivery pump (7), the cleaning liquid storage tank (3) is arranged on the top surface of the organic body (2), one end of the connecting pipe (4) is connected to the cleaning liquid storage tank (3), the other end of the connecting pipe (4) is connected to the grinding barrel (30), the first electric valve (5) is arranged on the connecting pipe (4), one end of the circulation pipe (6) is connected to the connecting pipe (4), the other end of the circulation pipe (6) is connected to one end of the grinding barrel (30), the delivery pump (7) is arranged on the connecting pipe (4), and the circulation pipe (6) is provided with a second electric valve (8).

2. The coating sand grinder according to claim 1, characterized in that: The cleaning assembly further comprises a filter box (9), a filter plate (10) and a sewage pipe (11); the filter box (9) is arranged on the circulation pipe (6); the filter box (9) is connected to the circulation pipe (6); the filter plate (10) is arranged inside the filter plate (10); one end of the sewage pipe (11) is connected to the bottom surface of the filter; and a third electric valve (12) is provided on the sewage pipe (11).

3. The coating sand grinder according to claim 1, characterized in that: The cleaning component further comprises a discharge pipe (13) and a fourth electric valve (14); one end of the discharge pipe (13) is connected to the bottom of one end of the grinding barrel (30); the fourth electric valve (14) is arranged on the discharge pipe (13); and a filter is provided at the connection between the discharge pipe (13) and the grinding barrel (30).

4. The coating sand grinder according to claim 1, characterized in that: The cleaning component further comprises a blower (15), an air supply pipe (16) and a fifth electric valve (17); the blower (15) is arranged at the top of the machine body (2); one end of the air supply pipe (16) is connected to the blower (15); the other end of the air supply pipe (16) is connected to the connecting pipe (4); and the fifth electric valve (17) is arranged on the air supply pipe (16).

5. The coating sand grinder according to claim 1, characterized in that: A drive motor (18) and a gearbox (19) are provided inside the body (2), the drive motor (18) is fixedly connected to the inner wall of the body (2), the output end of the drive motor (18) is fixedly connected to the input end of the gearbox (19), a main shaft (20) is provided inside the grinding barrel (30), one end of the main shaft (20) is fixedly connected to the output end of the gearbox (19), a plurality of dispersion discs (21) are provided on the main shaft (20), one end of the grinding barrel (30) is connected to a discharge pipe (22), a filter structure (23) is provided inside the grinding barrel (30), and the filter structure (23) is provided on one side of the discharge pipe (22).

6. The coating sand grinder according to claim 1, characterized in that: A heat-conducting cylinder (24) is provided on the outside of the grinding barrel (30), and a heat-conducting plate (25) is provided on the side wall of the heat-conducting cylinder (24). The heat-conducting plates (25) are provided in multiple groups, and the multiple groups of heat-conducting plates (25) are evenly distributed. The heat-conducting plates (25) are fixedly connected to the heat-conducting cylinder (24). A cooling cylinder (26) is provided on the outside of the heat-conducting cylinder (24), and the heat-conducting plates (25) are arranged inside the cooling cylinder (26).

7. The coating sand grinder according to claim 6, characterized in that: A water outlet pipe (27) is provided at the top end of the side wall of the cooling cylinder (26), and a water inlet pipe (28) is provided at the bottom section of the side wall of the cooling cylinder (26). Multiple groups of flow holes (29) are provided on the multiple groups of heat conduction plates (25), and the multiple groups of flow holes (29) are evenly distributed.

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