A paint mixing tank convenient to clean for paint production and processing

Abstract

The utility model relates to paint production technical field, and disclose a kind of paint production and processing convenient cleaning paint mixing tank, including jar body, jar cover, stirring frame and stirring vane, the jar cover covers the upper end opening of jar body, the stirring frame is installed on jar cover and extends into jar body inner chamber, the stirring vane is installed in stirring frame lower end, its outer edge and jar body inner wall have gap, the outer edge of the stirring vane is provided with scraper assembly;The scraper assembly is slidably installed on the outer edge of the stirring vane by the cooperation of T-shaped sliding block and T-shaped sliding slot;The T-shaped sliding slot is opened in the outer edge of stirring vane;The T-shaped sliding block is arranged on the inner side of scraper assembly.The utility model utilizes centrifugal force principle, so that scraper assembly can automatically move radially outward when rotating, compensate the gap generated due to wear, ensure that scraper is always closely attached to jar body inner wall, maintain long-term, stable, efficient cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of paint production technology, specifically to a paint mixing can that is easy to clean for paint production and processing. Background Technology

[0002] In the paint production process, the paint mixing tank is a key piece of equipment used to mix resins, pigments, solvents, and additives evenly. Because paint products are diverse, colors change frequently, and residual paint dries and hardens very easily, the paint mixing tank must be thoroughly cleaned each time a batch or color is changed.

[0003] Existing methods for cleaning paint mixing tanks have significant shortcomings: they rely heavily on manual solvent scrubbing, which results in low cleaning efficiency, high solvent consumption, high safety risks, and the risk of batch-to-batch color contamination due to incomplete cleaning.

[0004] Currently, although there are structures with rigid scrapers on the mixing paddle that clean the tank wall by rotating and scraping, the scrapers gradually wear down during use, causing gaps to form between them and the inner wall of the tank. As a result, they cannot effectively remove residual paint, and the cleaning effect decreases significantly over time.

[0005] Therefore, there is an urgent need for a paint mixing can that can automatically and efficiently clean, compensate for wear, and maintain a stable cleaning effect over a long period of time. Utility Model Content

[0006] To address the technical problems existing in the background art, this utility model proposes a paint mixing can that is easy to clean for paint production and processing.

[0007] This utility model proposes a paint mixing tank for easy cleaning in paint production and processing, including a tank body, a tank cover, a stirring rack and a stirring blade. The tank cover covers the upper opening of the tank body, the stirring rack is installed on the tank cover and extends into the inner cavity of the tank body, the stirring blade is installed at the lower end of the stirring rack, and there is a gap between its outer edge and the inner wall of the tank body. A scraper assembly is provided on the outer edge of the stirring blade. The scraper assembly is slidably mounted on the outer edge of the stirring blade through the cooperation of a T-shaped slider and a T-shaped groove; the T-shaped groove is formed on the outer edge of the stirring blade. The T-shaped slider is disposed on the inner side of the scraper assembly; The thickness of the T-shaped head of the T-shaped slider is less than the thickness of the T-shaped groove, so that the T-shaped slider has a compensating space for radial movement within the T-shaped groove. When the stirring rack drives the stirring blades to rotate, the centrifugal force drives the T-shaped slider and scraper assembly to move radially outward, so that the scraper assembly is in close contact with the inner wall of the tank. Addressing the issues of low manual cleaning efficiency and easy wear and tear on rigid scrapers leading to cleaning failure in traditional paint mixing cans, this can achieve automatic cleaning through "centrifugal force compensation + T-shaped sliding assembly". The scraper assembly and the stirring blades are connected by a T-shaped slider-groove, with the thickness of the slider head being less than the thickness of the groove. When the stirring frame rotates, centrifugal force pushes the scraper assembly radially outward, keeping it in close contact with the inner wall of the can. Even if the scraper wears down, it can still maintain contact through the compensation space, avoiding residual paint adhesion and reducing the actual adhesion rate. This design eliminates the need for manual scrubbing, improves actual cleaning efficiency, reduces solvent consumption, and is suitable for scenarios with frequent paint batch changes.

[0008] As a further optimization of this utility model, the stirring blade is U-shaped, its bottom shape is adapted to the bottom of the tank, and its two vertical parts are opposite to the side wall of the tank; the scraper assembly includes a first scraper corresponding to the two vertical parts of the stirring blade, and a second scraper corresponding to the bottom of the stirring blade. The U-shaped stirring blades are adapted to the cylindrical and arc-shaped bottom structure of the tank. The vertical parts on both sides correspond to the tank wall, and the bottom corresponds to the tank bottom, eliminating cleaning dead corners. The height of the first scraper matches the tank wall and is used to scrape off residue on the side wall. The arc shape of the second scraper matches the tank bottom and is used to scrape off residue at the bottom. The two work together to achieve full inner wall coverage cleaning.

[0009] As a further optimized solution of this utility model, the T-shaped slide groove includes a connected limiting groove and a connecting groove; the width of the connecting groove is smaller than the width of the limiting groove, and its outer side is open; the T-shaped slider includes a limiting plate and a connecting plate; the limiting plate is slidably accommodated in the limiting groove, one end of the connecting plate is connected to the limiting plate, and the other end passes through the opening of the connecting groove and is connected to the scraper assembly; the thickness of the limiting plate is smaller than the thickness of the limiting groove. The T-shaped chute's limiting groove restricts the slider's radial disengagement, while the connecting groove allows the connecting plate to slide. The thickness difference between the limiting plate and the limiting groove creates a compensation space, ensuring that the scraper can move outward under centrifugal force. This structure ensures that the scraper and the stirring blade rotate synchronously without circumferential offset, while also allowing radial compensation, avoiding scraper breakage caused by rigid connection, and is suitable for long-term, high-frequency cleaning.

[0010] As a further optimization of this utility model, the stirring blade is composed of two symmetrical stirring units, and the bottom of the two stirring units is fixedly connected to the connecting block at the lower end of the stirring frame by fasteners. The split-type mixing blades facilitate scraper installation and removal: when replacing the first scraper, there is no need to disassemble the mixing frame; simply slide it in along the chute. When replacing the second scraper, loosen the fasteners to separate the mixing unit, and it can be installed from the bottom chute. The split design can shorten the scraper replacement time, and the mixing unit is manufactured independently, reducing the overall replacement cost.

[0011] As a further optimization of this utility model, both the first scraper and the second scraper are flexible polymer sheets with a certain degree of elasticity, which can adapt to minor deformations of the inner wall of the tank, such as unevenness caused by welding errors, thereby improving the fit. At the same time, the flexible material avoids scratching the tank wall and is resistant to paint solvent corrosion, which can effectively extend the actual service life. Moreover, the surface of the sheet is smooth, with no paint adhering to it, and no residue after cleaning.

[0012] As a further optimization of this utility model, the limiting plate and the connecting plate are both flexible polymer sheets, using the same flexible material as the scraper, to ensure that the slider and the scraper deform synchronously, avoiding connection breakage due to material rigidity differences. At the same time, the flexible slider has low sliding resistance in the groove, reducing stirring energy consumption, and is wear-resistant, suitable for long-term high-frequency sliding.

[0013] As a further optimization of this utility model, the flexible polymer board is a polytetrafluoroethylene board, which has strong temperature resistance, is suitable for the heating and mixing of paint in paint production, has low surface energy, low paint adhesion rate, and only requires simple wiping for cleaning. Moreover, it has excellent chemical corrosion resistance, can withstand various paint solvents, and does not swell or deform.

[0014] As a further optimization of this utility model, the outer side of the scraper assembly is a contoured curved surface adapted to the shape of the inner wall of the tank. The design features a cylindrical side scraper and an arc-shaped bottom scraper, which fits perfectly against the inner wall of the tank. This avoids the incomplete cleaning caused by the line contact between the traditional flat scraper and the arc-shaped tank wall. The contour design ensures that the scraper makes surface contact with the tank wall, resulting in uniform scraping force. This not only guarantees the cleaning effect but also avoids excessive wear of the scraper caused by excessive local pressure, thus extending the scraper's service life.

[0015] The paint mixing can for easy cleaning in paint production and processing proposed in this utility model has the following beneficial effects: (i) Utilizing the principle of centrifugal force, the scraper assembly can automatically move radially outward when rotating, compensating for the gaps caused by wear, ensuring that the scraper always fits tightly against the inner wall of the tank, and maintaining a long-term, stable, and efficient cleaning effect. (ii) The scraper assembly adopts a contour-following design to match the shape of the tank side wall and bottom, which can thoroughly scrape off the residue on the inner wall and effectively solve the problem of cleaning dead corners; (iii) The scraper assembly is installed by sliding the T-shaped slider and the chute, and the stirring blade adopts a split structure, which makes it very convenient to disassemble and replace the first scraper and the second scraper, reducing maintenance costs and labor intensity. (iv) The scraper and related components are made of flexible polymer materials such as polytetrafluoroethylene, which are not only wear-resistant and corrosion-resistant, but also have a certain degree of elasticity. This is beneficial for compensating for wear and adapting to minor deformations, and is easy to clean due to its non-stick properties. (v) The high degree of automated cleaning reduces manual cleaning time and solvent usage, avoids color contamination between batches, and significantly improves production efficiency and product quality consistency.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 This is a front sectional view of the present invention. Figure 2 This is a top view of the mixing rack of this utility model; Figure 3 This utility model Figure 2 A schematic diagram of the assembly structure of the T-shaped groove and the T-shaped slider.

[0018] Figure descriptions: 1. Tank body; 2. Tank lid; 3. Stirring frame; 4. Stirring blade; 5. First scraper; 6. Second scraper; 7. Limiting groove; 8. Connecting groove; 9. Limiting plate; 10. Connecting plate. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] Please see Figures 1-3 A paint mixing tank for easy cleaning in paint production and processing includes a tank body 1. A discharge pipe with a valve is installed at the lower end of the tank body 1. The upper opening of the tank body 1 is covered and sealed by a tank cover 2. A stirring frame 3, which is centered on the tank body 1 and driven to rotate by a motor, is installed at the lower end of the tank cover 2. The lower end of the stirring frame 3 extends to the lower end of the inner cavity of the tank body 1 and is equipped with stirring blades 4. The outer edge of the stirring blades 4 is opposite to the inner wall of the tank body 1, and a scraper assembly is provided between the two. The scraper assembly is a contour-following design. Its outer side contacts the inner wall of the tank 1, and its inner side is adapted to the outer edge of the stirring blade 4 and is equipped with a slider. The outer edge of the stirring blade 4 is provided with a groove that is adapted to the slider. The scraper assembly is slidably assembled with the slider and the groove. The groove restricts the scraper assembly from radially disengaging, while allowing it to move synchronously in the circumferential direction. The chute and slider are T-shaped structures that are compatible with each other, and the thickness of the T-shaped head of the slider is less than the thickness of the T-shaped head of the chute. This allows the slider to move slightly outward under centrifugal force, so that when the stirring rack 3 rotates at high speed, the scraper assembly can always be in contact with the inner wall of the tank 1. Even if wear occurs, it can still ensure normal wall scraping and cleaning.

[0022] In one embodiment, such as Figure 1 As shown, the stirring blade 4 is U-shaped, with the bottom of the U-shape matching the bottom of the tank 1, and the vertical parts on both sides of the U-shape opposite to the side walls of the tank 1. The scraper assembly includes a first scraper 5 and a second scraper 6 corresponding to the vertical parts and bottom of the U-shape, respectively. T-shaped sliders are installed on the inner sides of the first scraper 5 and the second scraper 6. T-shaped grooves are opened on the vertical parts on both sides and the bottom of the stirring blade 4. like Figure 2 and Figure 3 As shown, the T-shaped chute includes a limiting groove 7 and a connecting groove 8 formed on the outer edge of the stirring blade 4. The limiting groove 7 and the connecting groove 8 are interconnected. The width of the connecting groove 8 is smaller than the width of the limiting groove 7, and the connecting groove 8 is set as an opening, thus forming a chute with a T-shaped cross-section. The T-shaped slider includes a limiting plate 9 and a connecting plate 10 connected thereto. The limiting plate 9 is slidably disposed in the limiting groove 7. The end of the connecting plate 10 away from the limiting plate 9 slides through the connecting groove 8 and is connected to the scraper assembly. The thickness of the limiting plate 9 is smaller than the thickness of the limiting groove 7, so that when the limiting plate 9 is slidably assembled into the limiting groove 7, a compensation space is formed in the limiting groove 7. When the stirring frame 3 drives the stirring blade 4 to rotate at high speed, the centrifugal force causes the limiting plate 9 to move toward the connecting groove 8, thereby driving the connecting plate 10 and the scraper to fit tightly against the inner wall of the tank 1, thus avoiding the problem of difficulty in normal cleaning caused by scraper wear.

[0023] Furthermore, the stirring blade 4 includes two stirring units symmetrically distributed on the left and right. The bottom of the two stirring units is fixed to the connecting block at the lower end of the stirring frame 3 by bolts. When disassembling and assembling the first scraper 5, simply insert the lower end of the first scraper 5 along the T-shaped groove on the outer edge of the top of the stirring unit. When disassembling and assembling the second scraper 6, the stirring unit needs to be removed, and then one end of the second scraper 6 is inserted along the T-shaped groove on the outer edge of the bottom of the stirring unit until the second scraper 6 is fully assembled. Then, the stirring unit and the connecting block at the lower end of the stirring frame 3 are locked. Furthermore, the first scraper 5, the second scraper 6, the limiting plate 9, and the connecting plate 10 are all made of flexible polymer materials, such as polytetrafluoroethylene, which also have a certain degree of elasticity in the radial direction and can undergo slight elastic deformation to facilitate actual disassembly and assembly. They can also compensate for radial wear and maintain close contact with the inner wall of the tank 1.

[0024] It should be noted that the lid 2 is adjustable and can be raised periodically, which will move the stirring rack 3 to the top of the tank body 1 so that the opening at the top of the tank body 1 can be fully opened. Then, the tank wall can be cleaned by cleaning tools, such as spraying cleaning fluid with a high-pressure nozzle.

[0025] The working principle of this utility model is as follows: During the paint mixing operation, the motor drives the mixing frame 3 to rotate, which in turn drives the mixing blade 4 and the scraper assembly installed on it to rotate together, mixing the paint in the tank 1. As the stirring system operates at high speed, the thickness of the limiting plate 9 in the T-shaped slider is less than the thickness of the limiting groove 7 in the T-shaped chute, providing a compensation space for radial movement of the entire scraper assembly. Under the action of centrifugal force, the T-shaped slider moves radially outward along with the first scraper 5 and the second scraper 6 until the working surfaces of the first scraper 5 and the second scraper 6 are tightly pressed against the side wall and bottom wall of the tank 1. As it rotates, the scraper removes paint residue adhering to the tank wall. Even if the scraper wears down due to long-term use, the scraper assembly can automatically move outward to compensate under the continuous action of centrifugal force, always maintaining close contact with the tank wall, thus ensuring long-term effective cleaning. After cleaning, the scraper assembly can be easily slid out of the T-shaped groove of the mixing blade 4 for replacement or maintenance.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A paint mixing can for easy cleaning in paint production and processing, comprising a can body (1), a can lid (2), a stirring rack (3), and a stirring blade (4), wherein the can lid (2) covers the upper opening of the can body (1), the stirring rack (3) is mounted on the can lid (2) and extends into the inner cavity of the can body (1), and the stirring blade (4) is mounted on the lower end of the stirring rack (3), with a gap between its outer edge and the inner wall of the can body (1), characterized in that: The outer edge of the stirring blade (4) is provided with a scraper assembly; The scraper assembly is slidably mounted on the outer edge of the stirring blade (4) through the cooperation of the T-shaped slider and the T-shaped groove; The T-shaped groove is formed on the outer edge of the stirring blade (4); The T-shaped slider is disposed on the inner side of the scraper assembly; The thickness of the T-shaped head of the T-shaped slider is less than the thickness of the T-shaped groove, so that the T-shaped slider has a compensating space for radial movement within the T-shaped groove. When the stirring rack (3) drives the stirring blade (4) to rotate, the centrifugal force drives the T-shaped slider and scraper assembly to move radially outward, so that the scraper assembly is in close contact with the inner wall of the tank (1).

2. The paint mixing can for easy cleaning in paint production and processing according to claim 1, characterized in that, The stirring blade (4) is U-shaped, and its bottom shape is adapted to the bottom of the tank (1), and its two vertical parts are opposite to the side wall of the tank (1); The scraper assembly includes a first scraper (5) corresponding to the vertical portions on both sides of the stirring blade (4), and a second scraper (6) corresponding to the bottom of the stirring blade (4).

3. A paint mixing can for easy cleaning in paint production and processing according to claim 2, characterized in that, The T-shaped groove includes a limiting groove (7) and a connecting groove (8) that are connected to each other; The width of the connecting groove (8) is smaller than the width of the limiting groove (7), and its outer side is open; The T-shaped slider includes a limiting plate (9) and a connecting plate (10); The limiting plate (9) is slidably accommodated in the limiting groove (7), and one end of the connecting plate (10) is connected to the limiting plate (9), and the other end passes through the opening of the connecting groove (8) and is connected to the scraper assembly. The thickness of the limiting plate (9) is less than the thickness of the limiting groove (7).

4. A paint mixing can for easy cleaning in paint production and processing according to claim 2, characterized in that, The stirring blade (4) is composed of two symmetrical stirring units, and the bottom of the two stirring units is fixedly connected to the connecting block at the lower end of the stirring frame (3) by fasteners.

5. A paint mixing can for easy cleaning in paint production and processing according to claim 2, characterized in that, Both the first scraper (5) and the second scraper (6) are flexible polymer sheets.

6. A paint mixing can for easy cleaning in paint production and processing according to claim 3, characterized in that, Both the limiting plate (9) and the connecting plate (10) are flexible polymer sheets.

7. A paint mixing can for easy cleaning in paint production and processing according to claim 5 or 6, characterized in that, The flexible polymer sheet is a polytetrafluoroethylene sheet.

8. A paint mixing can for easy cleaning in paint production and processing according to claim 1, characterized in that, The outer surface of the scraper assembly is a contoured curved surface adapted to the shape of the inner wall of the tank (1).

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