Grinding machine for paint production

Abstract

The utility model relates to a kind of grinding machines for paint production, including pedestal, outer tube, grinding cylinder, filter cylinder, grinding roller and grinding motor;Outer tube is fixed on pedestal, and accommodating cavity is formed in outer tube, and discharge port is formed on accommodating cavity;Grinding cylinder is fixed in the accommodating cavity of outer tube, and grinding cavity is formed in grinding cylinder, and sieve filter mouth is formed on the periphery surface of grinding cylinder in grinding cavity, and sieve filter mouth is in the lower side of grinding cavity;Filter cylinder is rotatably sleeved on grinding cylinder, and at least 2 groups of filter hole groups are formed on the periphery surface of filter cylinder, and at least 2 groups of filter hole groups are sequentially arranged along the circumference of filter cylinder, the aperture of filter hole of same filter hole group is same, the aperture of filter hole of different filter hole group is not same, and filter cylinder is communicated with sieve filter mouth of grinding cylinder by rotating so that there is only one filter hole group of filter hole;Grinding roller is rotatably arranged in grinding cavity, and the rotation axis of grinding roller is parallel to the length direction of grinding cavity;Grinding motor is used to drive grinding roller to rotate.

Description

Technical Field

[0001] This utility model relates to the technical field of coating production equipment, and in particular to a grinding machine for coating production. Background Technology

[0002] Water-based coatings require grinding of ingredients during production. Traditional grinders use filters with a single pore size, necessitating the replacement of filters with different pore sizes to meet varying coating requirements, which is inconvenient and reduces production efficiency. To address this issue, grinders with adjustable sieve diameters have emerged, such as the Chinese utility model patent CN217368578U entitled "A Sand Mill Filter Device." This design includes a grinding roller, a filtering mechanism, and a baffle. The filtering mechanism is fitted around the grinding roller with a gap between them, and the filtering mechanism contains filter holes of different pore sizes. The baffle covers the outside of the filtering mechanism. During use, rotating the entire filtering mechanism causes the external baffle to block one or more sets of filter holes, leaving only the holes suitable for grinding, thus grinding the material to different degrees of fineness. When the selected sieve diameter is small, the filter holes on the filtration mechanism that are larger than the target sieve diameter are blocked by the baffle. Since the baffle is located outside the filtration mechanism, some material will accumulate between the filter holes of the non-sieve diameter and the baffle, resulting in poor grinding effect. Utility Model Content

[0003] The purpose of this utility model is to provide a grinding machine for paint production, which has the advantages of simple structure, reasonable design and good grinding effect.

[0004] The technical solution adopted by this utility model is as follows: a grinding machine for paint production, including a base, an outer cylinder, a grinding cylinder, a filter cylinder, a grinding roller, and a grinding motor; the outer cylinder is fixed on the base, and a receiving cavity is formed inside the outer cylinder, with a discharge port formed on the receiving cavity; the grinding cylinder is fixed in the receiving cavity of the outer cylinder, and a grinding chamber is formed inside the grinding cylinder, the grinding chamber being a cylindrical structure arranged horizontally along its length, with a sieve opening connected to the outer circumferential surface of the grinding cylinder, the sieve opening being located on the lower side of the grinding chamber; the filter cylinder is rotatably fitted onto the grinding cylinder, and at least two sets of filter holes are formed on the outer circumferential surface of the filter cylinder, the at least two sets of filter holes being arranged sequentially along the circumference of the filter cylinder, the filter holes in the same set of filter holes having the same aperture, and the filter holes in different sets of filter holes having different apertures, the filter cylinder being rotated so that the filter holes of one and only one set of filter holes are connected to the sieve opening of the grinding cylinder; the grinding roller is rotatably disposed in the grinding chamber, the rotation axis of the grinding roller being parallel to the length direction of the grinding chamber; the grinding motor is mounted on the base, and the grinding motor is used to drive the grinding roller to rotate.

[0005] The working principle of this utility model is as follows: When the sieve diameter needs to be adjusted, the filter cylinder rotates to connect the filter holes of the filter hole group matching the target sieve diameter with the sieve opening, thereby adjusting the sieve diameter. Because the filter holes of the other filter hole groups with non-target sieve diameters are physically isolated from the grinding chamber by the grinding cylinder, material accumulation between the filter holes of the non-target sieve diameter groups and the grinding chamber is effectively prevented, improving the grinding effect. The design of the sieve opening being located below the grinding chamber allows the ground material to quickly pass through the filter cylinder and enter the receiving chamber under its own weight, improving grinding accuracy.

[0006] Furthermore, in the aforementioned grinding mill for paint production, the arc of the sieve opening covering the cross-sectional area of ​​the grinding chamber is in the range of 30° to 90°.

[0007] Furthermore, the grinding machine for paint production described above also includes an operating handwheel. The operating handwheel is located outside the outer cylinder and is coaxially and fixedly connected to the filter cylinder. The operating handwheel drives the filter cylinder to rotate by rotating. By adding the operating handwheel, the operation of the filter cylinder becomes more convenient.

[0008] Furthermore, in the aforementioned grinding machine for paint production, the operating handwheel has positioning recesses, the number of which is the same as the number of filter hole groups, and all positioning recesses are arranged around the rotation axis of the operating handwheel; the base has a mounting groove, the opening of which faces the operating handwheel; it also includes a positioning bead and a spring, the positioning bead being slidably disposed in the mounting groove, and the spring being compressed between the positioning bead and the bottom of the mounting groove, so that the positioning bead tends to move towards the operating handwheel; when the filter cylinder rotates to the position so that one set of filter hole groups connects with the filter opening, the positioning bead engages in one of the positioning recesses. This design provides a sense of depth when the operating handwheel rotates, making the alignment of the filter cylinder easier.

[0009] Furthermore, in the aforementioned grinding machine for paint production, the operating handwheel has positioning holes, the number of which is the same as the number of filter hole groups, and all positioning holes are arranged around the rotation axis of the operating handwheel; the base has locking holes; and a locking pin is also included. When the filter cylinder rotates to the position where one group of filter holes connects with the sieve opening, the locking pin passes through one of the positioning holes and is inserted into the locking hole. This design prevents the filter cylinder from rotating during operation, improving reliability.

[0010] Furthermore, the grinding mill for paint production, as described above, also includes a feed cylinder, which is mounted and fixed on the outer cylinder. The feed cylinder has an inlet and an outlet, with the inlet located on the outside of the outer cylinder and the outlet communicating with the grinding chamber of the grinding cylinder. This design makes feeding the grinding mill more convenient.

[0011] Furthermore, the grinding mill for paint production, as described above, also includes a conveying auger and a conveying motor. The feed cylinder has a feed channel and a conveying channel. The conveying channel is horizontally oriented, with one end connected to the grinding cylinder to form the output port. The other end of the conveying channel is equipped with the conveying motor. The conveying auger is rotatably mounted in the conveying channel and driven by the conveying motor. The auger, by rotating, conveys the material in the conveying channel towards the output port. The feed channel is vertically oriented, with its lower end connected to the conveying channel and its upper end forming the input port. This design allows for the quantitative feeding of material into the grinding chamber, preventing excessive material accumulation within the grinding chamber.

[0012] Furthermore, in the aforementioned grinding mill for paint production, a guide section is formed at the upper end of the feed channel. The guide section has a structure that gradually narrows inward from top to bottom, and the larger end of the guide section forms the input port. This design makes it more convenient to pour materials into the feed cylinder.

[0013] Furthermore, in the aforementioned grinding mill for paint production, a guiding slope is formed on the receiving cavity. The guiding slope and the discharge port are arranged sequentially along the length of the receiving cavity, and both the guiding slope and the discharge port are located directly below the screen opening. The guiding slope gradually slopes downwards towards the discharge port along the length of the receiving cavity. This design allows the material in the receiving cavity to be discharged more quickly and conveniently.

[0014] Furthermore, the grinding mill for paint production, as described above, also includes a collecting tray, which is detachably mounted on the base and positioned directly below the discharge port. This design facilitates the transportation of finished materials.

[0015] The advantages of this utility model are: simple structure, reasonable design, and good grinding effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an embodiment; Figure 2 This is the main view of the embodiment; Figure 3 for Figure 2 A cross-sectional view of the structure along the AA direction; Figure 4 for Figure 3 A cross-sectional view of the structure along the BB direction; Figure 5 for Figure 4 A magnified view of a portion at point A.

[0017] Explanation of reference numerals in the attached figures: 1-Base; 11-Mounting groove; 2-Outer cylinder; 21-Receiving cavity; 22-Discharge port; 23-Guiding inclined surface; 3-Grinding cylinder; 31-Grinding chamber; 32-Screen port; 4-Filter cylinder; 41-Filter hole group; 5-Grinding roller; 6-Grinding motor; 7-Operating handwheel; 8-Positioning bead; 9-Spring; 10-Locking pin; 20-Feeding cylinder; 201-Feeding channel; 2011-Guiding part; 2012-Inlet; 202-Conveying channel; 2021-Outlet; 30-Conveying auger; 40-Conveying motor; 50-Collection tray. Detailed Implementation

[0018] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] like Figures 1 to 5 A grinding mill for paint production, as described in this embodiment, includes a base 1, an outer cylinder 2, a grinding cylinder 3, a filter cylinder 4, a grinding roller 5, and a grinding motor 6. The outer cylinder 2 is fixed to the base 1, and a receiving cavity 21 is formed inside the outer cylinder 2. A discharge port 22 is formed on the receiving cavity 21. The grinding cylinder 3 is fixed in the receiving cavity 21 of the outer cylinder 2, and a grinding chamber 31 is formed inside the grinding cylinder 3. The grinding chamber 31 is a cylindrical structure arranged horizontally along its length. A sieve port 32 is formed on the grinding chamber 31, communicating with the outer circumference of the grinding cylinder 3. The sieve port 32 is located on the lower side of the grinding chamber 31. The filter cylinder 4 is rotatably sleeved on the grinding cylinder. On the outer circumferential surface of the filter cylinder 4, eight sets of filter holes 41 are formed. These eight sets of filter holes 41 are arranged sequentially along the circumference of the filter cylinder 4. The filter holes in the same set of filter holes 41 have the same diameter, while the filter holes in different sets of filter holes 41 have different diameters. The filter cylinder 4 rotates so that the filter holes of one and only one set of filter holes 41 are connected to the sieve opening 32 of the grinding cylinder 3. The grinding roller 5 is rotatably mounted in the grinding chamber 31, and its rotation axis is parallel to the length direction of the grinding chamber 31. The grinding motor 6 is mounted on the base 1 and drives the grinding roller 5 to rotate. The arc length A of the sieve opening 32 covering the cross-section of the grinding chamber 31 is 45°. In use, the grinding chamber 31 contains grinding media with a diameter larger than the maximum diameter of the filter holes in all sets of filter holes 41.

[0020] The working principle of this utility model is as follows: When the sieve diameter needs to be adjusted, the filter cylinder 4 rotates to connect the filter holes of the filter hole group 41 matching the target sieve diameter with the sieve opening 32, thereby achieving the adjustment of the sieve diameter. Since the filter holes of the other filter hole groups 41 with non-target sieve diameters are physically blocked from the grinding chamber 31 by the grinding cylinder 3, it can effectively prevent material from accumulating between the filter holes of the filter hole groups 41 with non-target sieve diameters and the grinding chamber 31, thus improving the grinding effect of the material. The design of the sieve opening 32 being located on the lower side of the grinding chamber 31 allows the ground material to quickly pass through the filter cylinder 4 and enter the receiving chamber 21 under its own weight, improving the grinding accuracy.

[0021] like Figure 2 , Figure 4 and Figure 5 As shown, this embodiment also includes an operating handwheel 7, which is located outside the outer cylinder 2 and is coaxially and fixedly connected to the filter cylinder 4. The operating handwheel 7 drives the filter cylinder 4 to rotate by rotating. By adding the operating handwheel 7, the operation of the filter cylinder 4 becomes more convenient.

[0022] like Figure 5 As shown, the operating handwheel 7 has positioning recesses, the number of which is the same as the number of filter hole groups 41. All positioning recesses are arranged around the rotation axis of the operating handwheel 7. The base 1 has mounting grooves 11, the number of which is the same as the number of positioning recesses. The opening of the mounting groove 11 is directly opposite the operating handwheel 7. It also includes positioning beads 8 and springs 9, the number of which is the same as the number of mounting grooves 11. One positioning bead 8 corresponds to one spring 9 and one mounting groove 11. The positioning bead 8 is slidably disposed in the mounting groove 11, and the spring 9 is compressed between the positioning bead 8 and the bottom of the mounting groove 11, so that the positioning bead 8 tends to move towards the operating handwheel 7. When the filter cylinder 4 rotates to the position where one group of filter holes 41 connects with the filter opening 32, all the positioning beads 8 are engaged in all the positioning recesses one by one. This design makes the rotation of the operating handwheel 7 more layered, making the alignment of the filter cylinder 4 easier.

[0023] like Figure 5 As shown, the operating handwheel 7 has positioning holes, the number of which is the same as the number of filter hole groups 41. All positioning holes are arranged around the rotation axis of the operating handwheel 7. The base 1 has locking holes and also includes a locking pin 10. When the filter cylinder 4 rotates to the position where one group of filter holes 41 connects with the screen opening 32, the locking pin 10 passes through one of the positioning holes and is inserted into the locking hole. This design prevents the filter cylinder 4 from rotating during operation, improving reliability.

[0024] like Figure 1 , Figure 2 and Figure 4 As shown, this embodiment also includes a feed cylinder 20, which is mounted and fixed on the outer cylinder 2. The feed cylinder 20 has an inlet 2012 and an outlet 2021. The inlet 2012 is located on the outside of the outer cylinder 2, and the outlet 2021 is connected to the grinding chamber 31 of the grinding cylinder 3. This design makes feeding the grinding machine more convenient.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, this embodiment also includes a conveying auger 30 and a conveying motor 40; the feeding cylinder 20 has a feeding channel 201 and a conveying channel 202. The conveying channel 202 is arranged horizontally, with one end connected to the grinding cylinder 3 to form the output port 2021, and the other end of the conveying channel 202 is equipped with the conveying motor 40. The conveying auger 30 is rotatably arranged in the conveying channel 202 and is drivenly connected to the conveying motor 40. The conveying auger 30 can convey the material in the conveying channel 202 towards the output port 2021 by rotation. The feeding channel 201 is arranged vertically, with its lower end connected to the conveying channel 202, and its upper end forming the input port 2012. This design allows the material to be quantitatively fed into the grinding chamber 31, avoiding excessive material accumulation in the grinding chamber 31.

[0026] like Figure 1 and Figure 4 As shown, a guide section 2011 is formed at the upper end of the feeding channel 201. The guide section 2011 has a structure that gradually narrows inward from top to bottom, and the larger end of the guide section 2011 forms the input port 2012. This design makes it more convenient to pour materials into the feeding cylinder 20.

[0027] like Figure 4 As shown, a guiding inclined surface 23 is formed on the receiving cavity 21. The guiding inclined surface 23 and the discharge port 22 are arranged sequentially along the length of the receiving cavity 21. Both the guiding inclined surface 23 and the discharge port 22 are located directly below the screen opening 32. The guiding inclined surface 23 is gradually inclined downwards along the length of the receiving cavity 21 towards the discharge port 22. This design allows the material in the receiving cavity 21 to be discharged more quickly and conveniently.

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment also includes a collection tray 50, which is detachably mounted on the base 1 and located directly below the discharge port 22. This design facilitates the transportation of finished materials.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, this utility model can have various modifications, combinations, and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A grinding mill for paint production, characterized in that: The system includes a base, an outer cylinder, a grinding cylinder, a filter cylinder, a grinding roller, and a grinding motor. The outer cylinder is fixed to the base and has a receiving cavity with a discharge port. The grinding cylinder is fixed in the receiving cavity of the outer cylinder and has a grinding chamber. The grinding chamber is a cylindrical structure arranged horizontally along its length and has a sieve opening connected to the outer circumference of the grinding cylinder, located below the grinding chamber. The filter cylinder is rotatably fitted onto the grinding cylinder and has at least two sets of filter holes on its outer circumference. These two sets of filter holes are arranged sequentially along the circumference of the filter cylinder. The filter holes in the same set have the same diameter, while the filter holes in different sets have different diameters. The filter cylinder is rotated so that the filter holes in one and only one set of filter holes are connected to the sieve opening of the grinding cylinder. The grinding roller is rotatably disposed in the grinding chamber, and its rotation axis is parallel to the length of the grinding chamber. The grinding motor is mounted on the base and drives the grinding roller to rotate.

2. The grinding mill for paint production as described in claim 1, characterized in that: The arc of the sieve opening covering the cross-section of the grinding chamber is in the range of 30° to 90°.

3. The grinding mill for paint production as described in claim 1, characterized in that: It also includes an operating handwheel, which is located on the outside of the outer cylinder and is coaxially and fixedly connected to the filter cylinder. The operating handwheel drives the filter cylinder to rotate by rotating.

4. A grinding mill for paint production as described in claim 3, characterized in that: The operating handwheel has positioning recesses, the number of which is the same as the number of filter hole groups, and all positioning recesses are arranged around the rotation axis of the operating handwheel; the base has mounting grooves, the opening of which is directly opposite the operating handwheel; it also includes a positioning bead and a spring, the positioning bead being slidably disposed in the mounting groove, and the spring being compressed between the positioning bead and the bottom of the mounting groove, so that the positioning bead tends to move toward the operating handwheel; when the filter cylinder rotates to the position so that one set of filter hole groups is connected to the filter port, the positioning bead is engaged in one of the positioning recesses.

5. A grinding mill for paint production as described in claim 3, characterized in that: The operating handwheel has positioning holes, the number of which is the same as the number of filter hole groups. All the positioning holes are arranged around the rotation axis of the operating handwheel. The base has locking holes. It also includes a locking pin. When the filter cylinder rotates to the position so that one of the filter hole groups is connected to the sieve opening, the locking pin passes through one of the positioning holes and is inserted into the locking hole.

6. A grinding mill for paint production as described in claim 1, characterized in that: It also includes a feed cylinder, which is installed and fixed on the outer cylinder. The feed cylinder has an inlet and an outlet. The inlet is located on the outside of the outer cylinder, and the outlet is connected to the grinding chamber of the grinding cylinder.

7. A grinding mill for paint production as described in claim 6, characterized in that: It also includes a conveying auger and a conveying motor; the feeding cylinder has a feeding channel and a conveying channel, the conveying channel is set horizontally, one end of the conveying channel is connected to the grinding cylinder to form the output port, the other end of the conveying channel is equipped with the conveying motor, the conveying auger is rotatably set in the conveying channel and is connected to the conveying motor for transmission, the conveying auger can convey the material in the conveying channel to the output port by rotating; the feeding channel is set vertically, the lower end of the feeding channel is connected to the conveying channel, and the upper end of the feeding channel forms the input port.

8. A grinding mill for paint production as described in claim 7, characterized in that: The upper end of the feeding channel is formed with a guide section, which has a structure that gradually narrows inward from top to bottom, and the large end of the guide section forms the input port.

9. A grinding mill for paint production as described in claim 1, characterized in that: A guiding slope is formed on the receiving cavity. The guiding slope and the discharge port are arranged sequentially along the length of the receiving cavity. The guiding slope and the discharge port are both located directly below the screen opening. The guiding slope is gradually inclined downward along the length of the receiving cavity towards the discharge port.

10. A grinding mill for paint production as described in claim 1, characterized in that: It also includes a collection tray, which is detachably mounted on the base and located directly below the discharge port.

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