A vacuum defoaming device for water-based paint production

Abstract

This utility model discloses a vacuum defoaming device for water-based paint production. The device relates to the field of water-based paint processing technology and includes a defoaming tank. A motor is fixedly connected to the upper end of the defoaming tank, and a rotating shaft extending inside the tank is fixedly connected to the output end of the motor. A fixed sleeve is fixedly connected inside the defoaming tank, and a liquid supply mechanism is provided between the fixed sleeve and the rotating shaft. A defoaming plate is fixedly connected to the side of the rotating shaft, and a scraping mechanism is provided on the side of the defoaming plate. The scraping mechanism achieves defoaming treatment on the inner wall of the defoaming tank through the centrifugal force of the rotating defoaming plate. In this vacuum defoaming device for water-based paint production, during the rotation of the defoaming plate, the connecting plate nested on its side can slide along the movable groove under the action of centrifugal force, thereby causing the scraper on the outer side to come into contact with the inner wall of the defoaming tank, scraping away the bubbles attached to the inner wall of the defoaming tank, further avoiding insufficient defoaming.

Description

Technical Field

[0001] This utility model relates to the field of water-based paint processing technology, specifically a vacuum defoaming device for water-based paint production. Background Technology

[0002] Water-based paint is a type of coating that uses water as a diluent and does not contain organic solvents. It is environmentally friendly, safe, and easy to apply, and is widely used in many fields such as home decoration, furniture, automobiles, and industry.

[0003] The prior art (Chinese patent publication number CN222427222U, publication date 2025-02-07) discloses a defoaming device for water-based industrial paint, including a defoaming cylinder. A top cover and a base are fixedly connected to the top and bottom surfaces of the defoaming cylinder, respectively. A storage tank is bolted to the top surface of the top cover. The advantages of this invention are: by opening the electromagnetic valve on the hollow tube via a controller, the defoamer inside the storage tank flows into the spraying disc through the feed inlet. When the hollow tube rotates, it drives the stirring plate to stir the defoamer, preventing sedimentation. The spraying disc also rotates with the hollow tube, throwing out the defoamer under centrifugal force, allowing the defoamer to fall evenly into the defoaming cylinder and disperse more evenly in the water-based paint, improving the defoaming effect. Furthermore, a single motor can simultaneously drive the hollow tube, spraying disc, and stirring components, reducing motor noise.

[0004] While existing technologies can defoam water-based paints, the defoamer is mostly added from above, which prevents it from fully bonding with the paint. Additionally, some bubbles adhere to the inner wall of the device during defoaming and cannot be eliminated, thus presenting certain limitations.

[0005] Therefore, we propose a vacuum defoaming device for water-based paint production to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a vacuum defoaming device for the production of water-based paint, so as to solve the problems mentioned in the background art, in which the defoamer is mostly added from the top, resulting in the defoamer not being able to fully combine with the paint body. At the same time, during the defoaming operation, some bubbles will adhere to the inner wall of the device and cannot be eliminated, which has certain limitations.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a vacuum defoaming device for water-based paint production, comprising a defoaming tank, a motor fixedly connected to the upper end of the defoaming tank, and a rotating shaft extending inside the defoaming tank fixedly connected to the output end of the motor, a fixed sleeve fixedly connected inside the defoaming tank, and a liquid supply mechanism provided between the fixed sleeve and the rotating shaft, a defoaming plate fixedly connected to the side of the rotating shaft, and a scraping mechanism provided on the side of the defoaming plate, the scraping mechanism achieving defoaming treatment of the inner wall of the defoaming tank through the centrifugal action of the rotating defoaming plate.

[0008] Furthermore, the liquid supply mechanism includes a liquid supply pipe, which is disposed through the side of the fixed sleeve, and a holding groove is provided inside the fixed sleeve. The upper end of the rotating shaft is provided with a water inlet hole that matches the position of the holding groove.

[0009] Furthermore, a water supply groove is provided inside the rotating shaft, and a nozzle is connected through the outer side of the rotating shaft, with the nozzle communicating with the water inlet through the water supply groove.

[0010] Furthermore, the defoaming plate has a rectangular array of defoaming holes, and the defoaming plate is symmetrically arranged about the center point of the rotating shaft.

[0011] Furthermore, the scraping mechanism includes a movable groove, which is formed inside the outer end of the defoaming plate, and a movable plate is nested inside the movable groove.

[0012] Furthermore, a spring is fixedly connected between the inner side of the movable plate and the inner wall of the movable groove, and a connecting plate is fixedly connected to the outer side of the movable plate, and a scraper is fixedly connected to the outer side of the connecting plate.

[0013] Furthermore, the connecting plate forms a sliding structure with the movable groove via a spring, the outer side of the scraper is arc-shaped, and when the scraper is subjected to centrifugal force, its outer side is in contact with the inner wall of the defoaming tank.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Defoamer can be added through the liquid supply pipe. The defoamer is added into the holding tank inside the fixed sleeve through the liquid supply pipe. At this time, the defoamer enters the water supply tank inside the rotating shaft through the water inlet hole that matches the holding tank, and is then discharged outward through the nozzle set on the outside of the rotating shaft. Since the nozzle is arranged vertically, the defoamer can be placed at different heights inside the device, so as to fully contact the paint and avoid the phenomenon that insufficient contact between the defoamer and the paint due to single-position addition will affect the defoaming effect.

[0016] 2. The motor drives the rotating shaft to rotate, which in turn drives the defoaming plate to rotate synchronously. When the defoaming plate rotates, the defoaming holes on the top can stir the paint and break up the air bubbles inside the paint, thereby achieving the defoaming operation of the paint.

[0017] 3. During the rotation of the defoaming plate, the connecting plates nested on its sides can slide along the movable groove under the action of centrifugal force, so that the scraper set on the outside can fit against the inner wall of the defoaming tank, scraping off the air bubbles attached to the inner wall of the defoaming tank, further avoiding the phenomenon of insufficient defoaming.

[0018] 4. When the device is not in use, the connecting plate is not subjected to centrifugal force. At this time, the moving plate is pulled by the elastic force of the spring itself, thereby moving into the movable groove and driving the connecting plate to reset. This prevents the scraper from sticking to the inner wall of the defoaming tank, thus avoiding the phenomenon that paint residue on the inner wall of the defoaming tank will become fixed to the scraper after the paint residue has hardened, making it unusable for subsequent use. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional sectional view of the present invention;

[0021] Figure 3 This is a three-dimensional sectional view of the fixing sleeve of this utility model;

[0022] Figure 4 This is a three-dimensional sectional view of the rotating shaft of this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the defoaming board of this utility model;

[0024] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0025] In the diagram: 1. Defoaming tank; 2. Liquid supply pipe; 3. Rotating shaft; 4. Motor; 5. Fixing sleeve; 6. Container tank; 7. Water inlet; 8. Nozzle; 9. Water supply tank; 10. Defoaming plate; 11. Defoaming hole; 12. Movable groove; 13. Spring; 14. Moving plate; 15. Scraper; 16. Connecting plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: As Figure 1 , Figure 2 and Figure 4 The present invention provides the following technical solution: a vacuum defoaming device for water-based paint production, which discloses a defoaming plate 10, and defoaming operation can be performed by rotating the defoaming plate 10: a motor 4 is fixedly connected to the upper end of the defoaming tank 1, and a rotating shaft 3 extending inside the defoaming tank 1 is fixedly connected to the output end of the motor 4.

[0028] A defoaming plate 10 is fixedly connected to the side of the rotating shaft 3. The defoaming plate 10 has a rectangular array of defoaming holes 11, and the defoaming plate 10 is symmetrically arranged about the center point of the rotating shaft 3.

[0029] Motor 4 drives shaft 3 to rotate, which in turn drives defoaming plate 10 to rotate synchronously. When defoaming plate 10 rotates, the defoaming holes 11 on top can stir the paint and break up the bubbles inside the paint, thereby achieving defoaming of the paint.

[0030] Example 2: Figure 2 , Figure 3 and Figure 4 The present invention provides the following technical solution: a vacuum defoaming device for water-based paint production, which discloses a liquid supply mechanism. The liquid supply mechanism can complete the liquid supply treatment at different height positions of the defoamer: the liquid supply mechanism includes a liquid supply pipe 2, a fixed sleeve 5 is fixedly connected inside the defoaming tank 1, and a liquid supply mechanism is provided between the fixed sleeve 5 and the rotating shaft 3. The liquid supply pipe 2 is provided through the side of the fixed sleeve 5, and a holding groove 6 is opened inside the fixed sleeve 5. A water inlet hole 7 adapted to the position of the holding groove 6 is opened at the upper end of the rotating shaft 3. A water supply groove 9 is opened inside the rotating shaft 3, and a nozzle 8 is connected through the outside of the rotating shaft 3. The nozzle 8 is connected to the water inlet hole 7 through the water supply groove 9.

[0031] The defoamer can be added through the liquid supply pipe 2. The defoamer is added into the holding tank 6 inside the fixed sleeve 5 through the liquid supply pipe 2. At this time, the defoamer enters the water supply tank 9 inside the rotating shaft 3 through the water inlet 7 that is compatible with the holding tank 6, and is discharged outward through the nozzle 8 set on the outside of the rotating shaft 3. Since the nozzle 8 is arranged vertically, the defoamer can be placed at different heights inside the device, so as to fully contact the paint and avoid the phenomenon that insufficient contact between the defoamer and the paint is caused by single-position addition, which affects the defoaming effect.

[0032] Example 3: Figure 2 , Figure 5 and Figure 6 The present invention provides the following technical solution: a vacuum defoaming device for water-based paint production, which discloses a scraping mechanism to scrape off bubbles adhering to the inner wall of the defoaming tank 1: a scraping mechanism is provided on the side of the defoaming plate 10, and the scraping mechanism achieves defoaming treatment on the inner wall of the defoaming tank 1 through the centrifugal action of the rotation of the defoaming plate 10. The scraping mechanism includes a movable groove 12, which is opened inside the outer end of the defoaming plate 10, and a movable plate 14 is nested inside the movable groove 12. A spring 13 is fixedly connected between the inner side of the movable plate 14 and the inner wall of the movable groove 12, and a connecting plate 16 is fixedly connected to the outer side of the movable plate 14. A scraper 15 is fixedly connected to the outer side of the connecting plate 16. The connecting plate 16 and the movable groove 12 form a sliding structure through the spring 13. The outer side of the scraper 15 is arc-shaped, and when subjected to centrifugal action, the outer side of the scraper 15 is in contact with the inner wall of the defoaming tank 1.

[0033] During the rotation of the defoaming plate 10, the connecting plate 16 nested on its side can slide along the movable groove 12 under the action of centrifugal force, so that the scraper 15 set on the outside can come into contact with the inner wall of the defoaming tank 1, and scrape off the bubbles attached to the inner wall of the defoaming tank 1, further avoiding the phenomenon of insufficient defoaming. When the device is not in use, the connecting plate 16 is not subjected to centrifugal force. At this time, the moving plate 14 is pulled by the elastic force of the spring 13, thereby moving into the movable groove 12 and driving the connecting plate 16 to reset, so that the scraper 15 does not come into contact with the inner wall of the defoaming tank 1, thereby avoiding the phenomenon that paint residue on the inner wall of the defoaming tank 1 will become fixed with the scraper 15 after the paint residue hardens, making it unusable for subsequent use.

[0034] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum defoaming device for water-based paint production, comprising a defoaming tank (1), wherein a motor (4) is fixedly connected to the upper end of the defoaming tank (1), and a rotating shaft (3) extending inside the defoaming tank (1) is fixedly connected to the output end of the motor (4), characterized in that: The defoaming tank (1) is fixedly connected to a fixed sleeve (5), and a liquid supply mechanism is provided between the fixed sleeve (5) and the rotating shaft (3). A defoaming plate (10) is fixedly connected to the side of the rotating shaft (3), and a scraping mechanism is provided on the side of the defoaming plate (10). The scraping mechanism achieves defoaming treatment on the inner wall of the defoaming tank (1) through the centrifugal action of the rotation of the defoaming plate (10).

2. The vacuum defoaming device for water-based paint production according to claim 1, characterized in that: The liquid supply mechanism includes a liquid supply pipe (2), which is installed through the side of the fixed sleeve (5), and the fixed sleeve (5) has a holding groove (6) inside. The upper end of the rotating shaft (3) has a water inlet hole (7) that matches the position of the holding groove (6).

3. The vacuum defoaming device for water-based paint production according to claim 2, characterized in that: The rotating shaft (3) has a water supply groove (9) inside, and a nozzle (8) is connected through the outside of the rotating shaft (3), and the nozzle (8) is connected to the water inlet (7) through the water supply groove (9).

4. The vacuum defoaming device for water-based paint production of claim 1, characterized in that: The defoaming plate (10) has a rectangular array of defoaming holes (11), and the defoaming plate (10) is symmetrically arranged about the center point of the rotating shaft (3).

5. The vacuum defoaming device for water-based paint production according to claim 4, characterized in that: The scraping mechanism includes a movable groove (12), which is located inside the outer end of the defoaming plate (10), and a movable plate (14) is nested inside the movable groove (12).

6. The vacuum defoaming device for water-based paint production according to claim 5, characterized in that: A spring (13) is fixedly connected between the inner side of the movable plate (14) and the inner wall of the movable groove (12), and a connecting plate (16) is fixedly connected to the outer side of the movable plate (14), and a scraper (15) is fixedly connected to the outer side of the connecting plate (16).

7. A vacuum defoaming device for water-based paint production according to claim 6, characterized in that: The connecting plate (16) forms a sliding structure with the movable groove (12) via the spring (13). The outer side of the scraper (15) is arc-shaped, and when the scraper (15) is subjected to centrifugal force, its outer side is in contact with the inner wall of the defoaming tank (1).

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