Coating recovery system
By designing a paint recycling system that uses a conveyor belt and funnel structure to collect excess paint, combined with a vacuum pump and diaphragm pump, the problem of paint being difficult to recycle when spraying on the side of a workpiece is solved, enabling rapid paint recycling and reuse, and improving spraying efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU JUNHE PRECISION CO LTD
- Filing Date
- 2025-03-26
- Publication Date
- 2026-04-21
AI Technical Summary
In existing technologies, excess paint is difficult to recycle when spraying on the sides of workpieces, resulting in paint waste and increased costs.
Design a paint recycling system that uses a vertically arranged conveyor belt and funnel structure to collect excess paint into a storage tank. The system uses a vacuum pump and a diaphragm pump to achieve rapid recycling and reuse of the paint. A valve is installed in the system to control the flow and storage of the paint.
It enables rapid recycling of coatings, reduces the exposure time of coatings to air, reduces waste, improves work efficiency, supports the reuse of coatings, and does not affect the continuous operation of the spraying production line.
Smart Images
Figure CN224142588U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of paint spraying, and more specifically, to a paint recycling system. Background Technology
[0002] Surface spraying is a process of spraying one or more protective films onto the surface of a workpiece. Depending on the spraying requirements, the coating can be classified into protective wear-resistant layers, corrosion-resistant layers, heat-insulating layers, and coatings that make the workpiece more aesthetically pleasing.
[0003] Existing assembly line spraying methods typically place workpieces on a conveyor belt, guiding the sprayed surfaces under the spray gun for sequential spraying. In some processes, such as multi-sided battery spraying and automotive parts spraying, where the sides of the parts are sprayed, it is necessary to install a spray nozzle shielding device at the opposite position to block the paint. In conventional spraying, this position is usually covered with a plastic film, which can shield the paint and retain most of it on the film. However, the paint on this film is difficult to recycle, resulting in a large amount of paint waste.
[0004] Based on the above problems, we designed a paint recycling system to recover paint during side coating and reduce costs. Utility Model Content
[0005] To overcome the technical problem mentioned in the background art of the difficulty in recycling excess paint in the current workpiece side spraying process, this utility model provides a paint recycling system that can effectively reduce the time the paint is in the air and make the paint easy to reuse through rapid recycling.
[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:
[0007] A paint recycling system includes a vertically arranged conveyor belt and a funnel located at the bottom of the conveyor belt's drive direction. A scraper for hanging paint is fixed to the conveyor belt frame at the top of the funnel. The bottom of the funnel is connected to the top of at least one storage tank via a first conveying pipe. The top of the storage tank is connected to the top of a vacuum tank via a second conveying pipe. The top of the vacuum tank is connected to the air inlet of a vacuum pump via a third conveying pipe. The bottom of the storage tank is connected to a diaphragm pump via a fourth conveying pipe.
[0008] The first conveying pipe, the second conveying pipe, and the fourth conveying pipe are respectively equipped with a first valve body, a third valve body, and a second valve body.
[0009] In the above embodiments, the purpose of the conveyor belt is not to transport the workpiece to be sprayed in the traditional way, but to act as a baffle for side spraying of the workpiece. When spraying the side of the battery, excess paint will fall onto the conveyor belt. The conveyor belt will transport the paint adhering to the surface to the scraper position. As the amount of paint increases, it will fall into the funnel below under the influence of gravity. The third valve body above the vacuum tank is opened, and a negative pressure environment is formed inside the storage tank. The paint in the funnel enters the storage tank. When it is needed for secondary use, the second valve body is opened and the first valve body is closed. The storage tank is then pumped out for secondary use through the fourth conveying pipe by the pump.
[0010] When it is necessary to pressurize the inside of the vacuum tank, close the third valve and turn on the vacuum pump to pressurize.
[0011] Preferably, the height of the conveyor belt and the funnel is greater than the height of the storage tank and the vacuum tank.
[0012] Preferably, there are three storage tanks, and the third valve body and the second valve body are both four-way valves; the three storage tanks are respectively connected to the third valve body through the second conveying pipe, and the third valve body is connected to the vacuum tank; the three storage tanks are respectively connected to the second valve body through the fourth conveying pipe, and the second valve body is connected to the diaphragm pump.
[0013] Preferably, both the third valve body and the second valve body are solenoid valves.
[0014] Preferably, a paint-coated fiberglass filter is installed at the pressure relief outlet of the vacuum pump.
[0015] Preferably, the bottom of the storage tank and the vacuum tank are respectively provided with a vacuum tank pressure relief port and a storage tank discharge port.
[0016] Compared with the prior art, the beneficial effects of this utility model's technical solution are:
[0017] This invention provides a paint recycling system that can quickly recover excess paint during the workpiece spraying process, especially when spraying the sides of the workpiece, reducing the time the paint is exposed to air. The system can quickly recover the paint before it cools down, making it convenient for reuse. Furthermore, the paint recycling of this system can be carried out continuously without shutting down the spraying line, thus improving work efficiency. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1This is a three-dimensional structural diagram of a single storage tank in the paint recycling system of this utility model;
[0020] Figure 2 This is a schematic diagram of the installation structure of the three storage tanks and diaphragm pump in the paint recycling system of this utility model.
[0021] The markings in the diagram are as follows: 1. Conveyor belt; 2. Scraper; 3. Funnel; 4. Storage tank; 5. Vacuum tank; 6. Vacuum pump; 7. Diaphragm pump; 8. First conveying pipe; 9. First valve body; 10. Second conveying pipe; 11. Third conveying pipe; 12. Paint fiberglass filter; 13. Second valve body; 14. Vacuum tank pressure relief port; 15. Storage tank discharge port; 16. Fourth conveying pipe; 17. Third valve body. Detailed Implementation
[0022] To better understand the purpose, structure, and function of this utility model, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific preferred embodiments.
[0023] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in the embodiments are only for illustrating the technical solution and do not limit the scope of protection of this utility model. It is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings for those skilled in the art.
[0024] Unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," and "fixation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0025] Example:
[0026] like Figure 1As shown, this application provides a paint recycling system, including a vertically arranged conveyor belt 1 and a funnel 3 located at the bottom of the end of the conveyor belt 1 in the transmission direction. A scraper 2 for hanging material is also fixed on the frame of the conveyor belt 1 at the top of the funnel 3. The bottom of the funnel 3 is connected to the top of at least one storage tank 4 through a first conveying pipe 8. The top of the storage tank 4 is also connected to the top of a vacuum tank 5 through a second conveying pipe 10. The top of the vacuum tank 5 is also connected to the air inlet of a vacuum pump 6 through a third conveying pipe 11. The bottom of the storage tank 4 is connected to a diaphragm pump 7 through a fourth conveying pipe 16. A first valve body 9, a third valve body 17, and a second valve body 13 are respectively provided on the first conveying pipe 8, the second conveying pipe 10, and the fourth conveying pipe 16.
[0027] The specific principle of coating recycling in the above embodiment is as follows: When the workpiece is being sprayed on the side, excess coating will fall onto the conveyor belt 1. The drive mechanism of the conveyor belt 1 will move the coating to the scraper 2. As the amount of coating gradually increases, it will fall naturally into the funnel 3 below under the action of gravity. When the coating needs to be recycled, the first valve body 9 and the third valve body 17 are opened, and the vacuum tank 5 pressurizes the inside of the storage tank 4. Under negative pressure, the coating enters the storage tank 4 from the top through the first conveying pipe 8. When the coating needs to be reused, the first valve body 9 and the third valve body 17 are closed, and the second valve body 13 is opened. The pump is used to extract the coating in the storage tank 4 through the fourth conveying pipe 16. When the vacuum tank 5 needs to be pressurized, the third valve body 17 is closed, the vacuum pump 6 is turned on, and the vacuum tank 5 is pressurized.
[0028] Based on the above embodiment, the height of the conveyor belt 1 and the funnel 3 is greater than the height of the storage tank 4 and the vacuum tank 5. By setting the height difference, the paint can fall by gravity potential energy, which facilitates the paint to quickly enter the storage tank 4. The funnel 3 can be fixed to the support of the conveyor belt 1 by the support member to ensure that the position does not shift.
[0029] Based on the above embodiment, three storage tanks 4 are provided, and the third valve body 17 and the second valve body 13 are both four-way valves. The three storage tanks 4 are respectively connected to the third valve body 17 through the second conveying pipe 10, and the third valve body 17 is connected to the vacuum tank 5. The three storage tanks 4 are respectively connected to the second valve body 13 through the fourth conveying pipe 16, and the second valve body 13 is connected to the diaphragm pump 7. This embodiment provides a storage scenario with multiple storage tanks 4, which is the same as the above embodiment. The difference is that the vacuum tank 5 and the diaphragm pump 7 are connected through multiple conveying pipes, and four-way valves are connected at the junction of multiple connecting pipes, so that the paint can be sequentially pumped into different storage tanks for storage.
[0030] Furthermore, both the third valve body 17 and the second valve body 13 are solenoid valves.
[0031] Based on the above embodiments, a paint fiber filter 12 is installed at the pressure relief outlet of the vacuum pump 6. Since the paint used in the spraying process is basically toxic, when the vacuum tank 5 needs to be depressurized, the paint fiber filter 12 installed at the exhaust outlet of the vacuum pump 6 can effectively capture the paint in the exhaust air, preventing toxic paint from entering the air and achieving a filtering effect.
[0032] Based on the above embodiments, the bottom of the storage tank 4 and the vacuum tank 5 are respectively provided with a vacuum tank pressure relief port 14 and a storage tank discharge port 15. When it is necessary to quickly empty the storage tank 4 or the vacuum tank 5, the vacuum tank pressure relief port 14 and the storage tank discharge port 15 can be opened directly for operation. This operation is suitable for cleaning the storage tank 4 and the vacuum tank 5.
[0033] The paint recycling system of this application can quickly recover excess paint during the workpiece spraying process, especially when spraying the sides of the workpiece, reducing the time the paint is exposed to air. It can quickly recover the paint before it cools down, making it convenient for the paint to be reused. Moreover, the paint recycling of this system can be carried out continuously without shutting down the spraying production line, thus improving work efficiency.
[0034] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A paint recycling system, characterized in that: The system includes a vertically arranged conveyor belt (1) and a funnel (3) located at the bottom of the end of the conveyor belt (1) in the transmission direction. A scraper (2) for hanging material is also fixed on the conveyor belt (1) frame at the top of the funnel (3). The bottom of the funnel (3) is connected to the top of at least one storage tank (4) through a first conveying pipe (8). The top of the storage tank (4) is also connected to the top of a vacuum tank (5) through a second conveying pipe (10). The top of the vacuum tank (5) is also connected to the air inlet of a vacuum pump (6) through a third conveying pipe (11). The bottom of the storage tank (4) is connected to a diaphragm pump (7) through a fourth conveying pipe (16). The first conveying pipe (8), the second conveying pipe (10), and the fourth conveying pipe (16) are respectively equipped with a first valve body (9), a third valve body (17), and a second valve body (13).
2. The paint recycling system of claim 1, wherein, The height of the conveyor belt (1) and the funnel (3) is greater than the height of the storage tank (4) and the vacuum tank (5).
3. The paint recycling system according to claim 1, characterized in that, The storage tank (4) is provided in three parts. The third valve body (17) and the second valve body (13) are both four-way valves. The three storage tanks (4) are respectively connected to the third valve body (17) through the second conveying pipe (10), and the third valve body (17) is connected to the vacuum tank (5). The three storage tanks (4) are respectively connected to the second valve body (13) through the fourth conveying pipe (16), and the second valve body (13) is connected to the diaphragm pump (7).
4. The paint recovery system of claim 3, wherein, Both the third valve body (17) and the second valve body (13) are solenoid valves.
5. The paint recycling system of claim 1, wherein, The vacuum pump (6) is equipped with a paint-coated fiberglass filter (12) at its pressure relief outlet.
6. The paint recycling system of claim 1, wherein, The bottom of the storage tank (4) and the vacuum tank (5) are respectively provided with a vacuum tank pressure relief port (14) and a storage tank discharge port (15).