Pigment grinding device for paint production

Abstract

The utility model discloses a pigment grinding device for paint production, which comprises a grinding machine body and a pre-scraping mechanism, a scraper is mounted between the grinding machine body and a case close to a last-stage roller of the grinding machine body, the pre-scraping mechanism comprises a supporting plate, an L-shaped connecting plate, an electric push rod, a U-shaped connecting block, a wall supporting plate, a bridge plate, a baffle and a double-end scraper, the pre-scraping mechanism is arranged in the machine box of the grinding machine body, and the pre-scraping mechanism is provided with a set of double-end scraping pieces capable of being driven by the electric push rod at the position of the grinding machine body. The double-end scraping piece can be pushed by the electric push rod to be close to the last-stage roller of the grinding machine body according to needs, pigment materials to be pre-scraped fall to the discharging base, after pre-scraping, the remaining pigment materials are thinned, the viscosity is greatly reduced, an original scraper can complete scraping and collecting work more easily and thoroughly, and the pigment scraping and collecting efficiency and cleanliness are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of pigment grinding technology, and in particular to a pigment grinding device for paint production. Background Technology

[0002] Paint is composed of resin, solvent, pigment, additives, etc. In the current paint production process, the raw materials need to be ground and dispersed. Fineness and uniformity are important factors affecting the quality of paint. They have a great influence on film quality, gloss, durability and storage stability of paint. The pigment grinding equipment commonly used in paint production is usually a three-roll mill. Through the different speeds and gaps of the three rollers, the pigment particles are subjected to shearing, squeezing and grinding between the rollers, thereby achieving the purpose of refining and dispersing.

[0003] In existing three-roll mills, when grinding pigments, a scraper is usually placed near the last roller. The pigment grinding material scraped off by the scraper can be collected and discharged from the discharge seat. However, when a single scraper scrapes some highly viscous paint materials, the viscous pigment grinding material is not easy to be scraped off from the last roller because the scraper needs to maintain a suitable distance from the roller. This affects the scraping efficiency after pigment grinding. To address this, we propose a pigment grinding device for paint production. Utility Model Content

[0004] The main objective of this invention is to provide a pigment grinding device for paint production. A pre-scraping mechanism is installed inside the grinding mill body. This mechanism consists of a set of double-headed scrapers that can be driven by an electric actuator. When grinding viscous paint pigments, the double-headed scrapers can be pushed by the electric actuator to the last roller of the grinding mill body to pre-scrape the pigment material and discharge it to the discharge seat. After pre-scraping, the remaining pigment material becomes thinner, greatly reducing its viscosity. This allows the original scraper to complete the scraping work more easily and thoroughly, significantly improving the pigment scraping efficiency and cleanliness. This enhances the scraping efficiency of the grinding mill body for viscous pigment materials and effectively solves the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A pigment grinding device for paint production includes a grinding mill body. A scraper is installed between the mill body and the last stage roller. The device also includes a pre-scraping mechanism, which includes a support plate, an L-shaped connecting plate, an electric push rod, a U-shaped connecting block, a wall support plate, a bridge plate, a baffle, and a double-headed scraper. The support plate is symmetrically installed above the grinding mill body above the scraper. An L-shaped connecting plate is welded to the top of the support plate. An electric push rod is bolted to the L-shaped connecting plate. A U-shaped connecting block is installed at the telescopic head of the electric push rod. A wall support plate is welded below the U-shaped connecting block. A baffle is welded to the outer surface of the wall support plate away from the grinding mill body via a bridge plate. The baffle is symmetrically welded to both ends of the double-headed scraper.

[0007] Furthermore, the baffle surface above the double-headed scraper has a raised inclined limiting rib, and the lower rib of the inclined limiting rib has an inclined surface that faces the welding angle of the double-headed scraper and the wall support plate.

[0008] By adopting the above technical solution, when the double-headed scraper performs pre-scraping near the last stage roller of the grinding machine body, the pre-scraped pigment material can fall backward along the inclined guide groove formed by the double-headed scraper, the inclined limiting rib and the baffle and fall into the discharge seat of the grinding machine body.

[0009] Furthermore, the inner wall of the grinding machine body on one side of the wall support plate is symmetrically provided with L-shaped guide grooves for the L-shaped guide blocks to slide into, and the L-shaped guide blocks are symmetrically welded on the outer surface of the wall support plate.

[0010] By adopting the above technical solution, when the wall support plate is driven by the electric actuator to make linear displacement, the wall support plate can be guided by the L-shaped guide block at the L-shaped guide groove of the grinding machine body, so as to ensure the stable displacement of the wall support plate, bridge plate, baffle and double-headed scraper.

[0011] Furthermore, the surface of the U-shaped connecting block at the top of the wall support plate is provided with a through hole for inserting the bolt head, and a flange nut is screwed onto the bolt head that protrudes from the bolt body of the U-shaped connecting block. The bolt head is welded to the telescopic rod head of the electric actuator.

[0012] By adopting the above technical solution, after the extension head of the electric actuator is welded with a bolt head, the bolt head passes through the through hole of the U-shaped connecting block and is locked with the flange nut, thereby locking the U-shaped connecting block and the bolt head.

[0013] Furthermore, an installation hole for screw bolts is provided between the rear seat plate of the electric actuator and the vertical plate of the L-shaped connecting plate, and the housing of the electric actuator is pressed against the top of the support plate.

[0014] By adopting the above technical solution, after the electric actuator is supported at the top of the mounting plate, the rear seat plate of the electric actuator can be locked with the vertical plate of the L-shaped connecting plate by bolts.

[0015] Furthermore, an installation hole is provided between the support plate and the housing of the grinding machine body, and a bolt is screwed between the support plate and the installation hole of the grinding machine body;

[0016] By adopting the above technical solution, the mounting plate and the housing of the grinding machine body can be locked together by screwing bolts at the mounting holes.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention features a pre-scraping mechanism installed inside the casing of the grinding mill body. The pre-scraping mechanism consists of a set of double-headed scrapers that can be driven by an electric push rod. When the grinding mill body is grinding paint pigments with high viscosity, the double-headed scrapers can be pushed by the electric push rod as needed to the last stage roller of the grinding mill body to pre-scrape the pigment material and discharge it to the discharge seat. After pre-scraping, the remaining pigment material becomes thinner, greatly reducing its viscosity. This allows the original scraper to complete the scraping work more easily and thoroughly, significantly improving the pigment scraping efficiency and cleanliness, and enhancing the scraping efficiency of the grinding mill body for pigments with high viscosity.

[0019] Furthermore, the pre-scraping mechanism consists of a double-headed scraper, an inclined limiting rib, and a baffle, forming an inclined guide groove. This allows the pre-scraped material to fall smoothly into the discharge seat along the inclined guide groove, ensuring the smooth guidance and fall of the pre-scraped material. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a pigment grinding device for paint production according to this utility model.

[0021] Figure 2 This is a schematic diagram showing the disassembled pre-scraping mechanism and grinding machine body of a pigment grinding device for paint production according to this utility model.

[0022] Figure 3 This is an exploded view of the pre-scraping mechanism of a pigment grinding device for paint production according to this utility model.

[0023] In the diagram: 1. Grinding machine body; 2. Scraper; 3. Pre-scraping mechanism; 4. Support plate; 5. L-shaped connecting plate; 6. Electric actuator; 7. Bolt head; 8. Flange nut; 9. U-shaped connecting block; 10. Wall support plate; 11. Bridge plate; 12. Baffle; 13. Double-headed scraper; 14. Inclined limiting rib; 15. L-shaped guide block; 16. L-shaped guide groove. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1-3As shown, a pigment grinding device for paint production includes a grinding mill body 1. A scraper 2 is installed between the grinding mill body 1 and the casing near its last stage roller. The device also includes a pre-scraping mechanism 3, which includes a support plate 4, an L-shaped connecting plate 5, an electric push rod 6, a U-shaped connecting block 9, a wall support plate 10, a bridge plate 11, a baffle 12, and a double-headed scraper 13. The support plate 4 is symmetrically installed above the grinding mill body 1 above the scraper 2, and an L-shaped connecting plate 5 is welded to the top of the support plate 4. The electric push rod 6 is bolted to the L-shaped connecting plate 5, and a U-shaped connecting block 9 is installed at the telescopic head of the electric push rod 6. The wall support plate 10 is welded below the U-shaped connecting block 9, and a baffle 12 is welded to the outer plate surface of the wall support plate 10 away from the grinding mill body 1 via a bridge plate 11. The baffle 12 is symmetrically welded to both ends of the plate of the double-headed scraper 13.

[0026] Among them, the baffle 12 above the double-headed scraper 13 has a raised inclined limiting rib 14, and the lower rib of the inclined limiting rib 14 is provided with an inclined surface facing the welding inclined point of the double-headed scraper 13 and the wall support plate 10.

[0027] By adopting the above technical solution, when the double-headed scraper 13 is pre-scraping near the last stage roller of the grinding machine body 1, the pre-scraped pigment material can fall backward along the inclined guide groove formed by the double-headed scraper 13, the inclined limiting rib 14 and the baffle 12 and fall into the discharge seat of the grinding machine body 1.

[0028] Among them, L-shaped guide grooves 16 for L-shaped guide blocks 15 to be inserted and slid are symmetrically opened on the inner box wall of the grinding machine body 1 on one side of the wall support plate 10, and the L-shaped guide blocks 15 are symmetrically welded on the outer plate surface of the wall support plate 10.

[0029] By adopting the above technical solution, when the wall support plate 10 is driven by the electric push rod 6 to make linear displacement, the wall support plate 10 can be guided by the L-shaped guide block 15 at the L-shaped guide groove 16 of the grinding machine body 1, so as to ensure the stable displacement of the wall support plate 10, bridge plate 11, baffle 12 and double-headed scraper 13.

[0030] The surface of the U-shaped connecting block 9 at the top of the wall support plate 10 is provided with a through hole for inserting the bolt head 7, and the bolt head 7 is screwed onto the bolt body of the U-shaped connecting block 9. The bolt head 7 is welded to the telescopic rod head of the electric push rod 6.

[0031] By adopting the above technical solution, after the extension head of the electric actuator 6 is welded with the bolt head 7, the bolt head 7 passes through the through hole of the U-shaped connecting block 9 and is locked with the flange nut 8, thereby locking the U-shaped connecting block 9 and the bolt head 7.

[0032] The electric actuator 6 has a mounting hole for screwing bolts between its rear seat plate and the vertical plate of the L-shaped connecting plate 5, and the housing of the electric actuator 6 is pressed against the top of the support plate 4.

[0033] By adopting the above technical solution, after the electric actuator 6 is supported at the top of the support plate 4, the rear seat plate of the electric actuator 6 can be locked with the vertical plate of the L-shaped connecting plate 5 by bolts.

[0034] The mounting plate 4 and the housing of the grinding machine body 1 are provided with mounting holes, and bolts are screwed between the mounting plate 4 and the mounting holes of the grinding machine body 1.

[0035] By adopting the above technical solution, the mounting plate 4 and the housing of the grinding machine body 1 can be locked together by screwing bolts at the mounting holes.

[0036] It should be noted that this utility model is a pigment grinding device for paint production. A pre-scraping mechanism 3 is installed inside the casing of the grinding machine body 1. The wall-mounted plate 10 of the pre-scraping mechanism 3 is guided and secured in the L-shaped guide groove 16 of the grinding machine body 1 by means of an L-shaped guide block 15. The support plate 4 is then bolted into the casing of the grinding machine body 1 above the scraper 2. Then, the telescopic rod head of the electric push rod 6 passes through the U-shaped connecting block 9 via a bolt head 7 and is locked with the flange nut 8. Finally, the housing of the electric push rod 6 can be placed on top of the support plate 4, and bolts are screwed into it. The rear seat plate of the push rod 6 is locked to the vertical plate of the L-shaped connecting plate 5. The electric push rod 6 can be connected to an external controller, and with the assistance of professional technicians who are debugging the electric push rod 6, it can be controlled as needed through the external controller. When the electric push rod 6 pushes the U-shaped connecting block 9 forward, the wall support plate 10 can be guided by the L-shaped guide block 15 at the L-shaped guide groove 16 of the grinding machine body 1, so that the wall support plate 10, bridge plate 11, baffle 12 and double-headed scraper 13 can be stably displaced until the double-headed scraper 13 approaches the last stage roller of the grinding machine body 1. The double-headed scraper 13 is positioned above the scraper 2. When the paint production pigments are mixed with the paint production materials and poured into the three-roll grinding position of the grinding mill body 1 for grinding, the pigment mixture can pass through the different speeds and gaps of the three rollers, causing the pigment particles to be subjected to shearing, squeezing, and grinding between the rollers. When the pigment needs to be discharged from the last stage roller, the double-headed scraper 13 can approach the last stage roller as needed, and then a portion of the pigment material on the roller surface is scraped off by the double-headed scraper 13. The pre-scraped pigment material can then be scraped off along the double-headed scraper 13. 3. The inclined guide groove formed by the inclined limiting rib 14 and the baffle 12 falls backward into the discharge seat of the grinding machine body 1. When the thinned pigment material is scraped off by the scraper 2, its sticky material becomes thinner and can be scraped off and collected by the original scraper 2 of the grinding machine body 1, ensuring that the scraper 2 can scrape off the pigment material relatively cleanly. After the flange nut 8 is unscrewed, the support plate 4 with the electric push rod 6 can be removed from the grinding machine body 1. Then the wall support plate 10 can be pulled away from the grinding machine body 1 to facilitate the removal of the double-headed scraper 13 for cleaning and maintenance.

[0037] It should be noted that this utility model is a pigment grinding device for paint production. All components in this utility model are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pigment grinding apparatus for paint production, comprising a grinding mill body (1), wherein a scraper (2) is installed between the grinding mill body (1) and the casing near its last stage roller, characterized in that: It also includes a pre-scraping mechanism (3), which includes a support plate (4), an L-shaped connecting plate (5), an electric push rod (6), a U-shaped connecting block (9), a wall support plate (10), a bridge plate (11), a baffle (12), and a double-headed scraper (13). The support plate (4) is symmetrically installed on the grinding machine body (1) above the scraper (2), and an L-shaped connecting plate (5) is welded to the top of the support plate (4). An electric push rod (6) is bolted to the L-shaped connecting plate (5), and a U-shaped connecting block (9) is installed at the telescopic rod head of the electric push rod (6). A wall support plate (10) is welded below the U-shaped connecting block (9), and a baffle (12) is welded to the outer plate surface of the wall support plate (10) away from the grinding machine body (1) through a bridge plate (11). The baffle (12) is symmetrically welded to both ends of the plate of the double-headed scraper (13).

2. The pigment grinding device for paint production according to claim 1, characterized in that: The baffle (12) above the double-headed scraper (13) has a raised inclined rib (14), and the lower rib of the inclined rib (14) has an inclined surface facing the welding angle of the double-headed scraper (13) and the wall support plate (10).

3. The pigment grinding device for paint production according to claim 1, characterized in that: The inner wall of the grinding machine body (1) on one side of the wall support plate (10) is symmetrically provided with L-shaped guide grooves (16) for the L-shaped guide block (15) to be inserted and slid, and the L-shaped guide block (15) is symmetrically welded on the outer plate surface of the wall support plate (10).

4. The pigment grinding device for paint production according to claim 1, characterized in that: The surface of the U-shaped connecting block (9) at the top of the wall support plate (10) is provided with a through hole for inserting the bolt head (7), and the bolt head (7) is screwed onto the bolt body of the U-shaped connecting block (9). The bolt head (7) is welded to the telescopic rod head of the electric push rod (6).

5. A pigment grinding device for paint production according to claim 1, characterized in that: The electric actuator (6) has a mounting hole for screwing bolts between the rear seat plate and the vertical plate of the L-shaped connecting plate (5), and the housing of the electric actuator (6) is pressed against the top of the support plate (4).

6. A pigment grinding device for paint production according to claim 1, characterized in that: An installation hole is provided between the support plate (4) and the housing of the grinding machine body (1), and a bolt is screwed between the support plate (4) and the installation hole of the grinding machine body (1).

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