Paint supply system based on shower coating

Abstract

The utility model relates to the technical field of paint supply, in particular to a paint supply system based on shower coating, which comprises a plurality of stock solution buckets, a plurality of buffer buckets, a plurality of paint supply devices, a plurality of proportioning buckets, a plurality of paint supply pipelines, a plurality of waste liquid buckets and a plurality of paint recovery pipelines, the stock solution buckets and the buffer buckets are arranged so as to meet the requirements of different types or batches, and the paint supply devices are communicated with the stock solution buckets through thermal insulation pipes. The paint supply pipeline is connected with the paint spraying equipment and is connected with the temporary storage barrel through the first diluent pipeline, the diluted paint is fed into the proportioning barrel through the second diluent pipeline to be accurately proportioned, the paint supply pipeline is connected with the proportioning barrel and the paint spraying equipment, and the first filter is arranged at the output end to ensure the purity of the paint; and the recovered paint pipeline is provided with a pneumatic control three-way valve and a filter II, and the recovered paint is allowed to selectively return to the proportioning barrel or be reused after being filtered for the second time, so that the waste is reduced, and the resource utilization rate is improved.

Description

Technical Field

[0001] This utility model relates to the field of paint supply technology, specifically a paint supply system based on spray coating. Background Technology

[0002] In modern industrial production, the technical defects of paint supply systems have gradually become apparent, specifically in the following aspects:

[0003] Paint waste and environmental pollution are prominent issues.

[0004] Traditional paint supply systems often employ a unidirectional process of open-loop paint supply, spray coating, and direct waste discharge, without a paint recovery mechanism. During the spray coating process, a large amount of paint drips directly into the paint recovery tank below the coated product without being effectively utilized, and is discharged into waste containers or the external environment. This not only significantly increases raw material costs (annual losses on a single line can reach several tons), but the photoinitiators and resins contained in the paint may also pollute soil and water bodies, seriously conflicting with the concept of green manufacturing.

[0005] Insufficient dilution ratio precision leads to fluctuations in coating quality.

[0006] Different workpieces have significantly different requirements for parameters such as paint viscosity and curing speed. Traditional systems typically rely on manual experience to adjust the thinner addition ratio, lacking real-time monitoring and closed-loop control. For example, insufficient accuracy of the thinner flow meter (error ≥5%) or uneven mixing in the mixing tank (relying solely on mechanical stirring) can easily cause the paint viscosity to deviate from the process standard, leading to defects such as coating blistering, orange peel texture, or decreased adhesion, resulting in an increased product defect rate.

[0007] The filtration system is inefficient and has high maintenance costs.

[0008] Impurities in paint (such as cured adhesive particles, dust, and bubbles) can clog spray gun nozzles or affect coating uniformity. Traditional filtration solutions often use single-stage bag filters, with filtration accuracy limited to 50-100μm, and require frequent shutdowns to replace filter bags (every 8-12 hours). Furthermore, the system lacks redundant filtration channels, necessitating production interruptions for maintenance and resulting in lost capacity.

[0009] The operation is too complex and relies too heavily on manual labor.

[0010] Existing systems are typically pieced together from independent devices such as concentrate tanks, paint pumps, and spray guns, lacking integrated control. For example, steps such as adding thinner, recovering paint, and switching pipelines require manual operation of valves or adjustment of flow rates, which not only increases labor intensity but also easily leads to paint supply interruptions or incorrect mixing due to misoperation. According to statistics, human error accounts for over 40% of failures in traditional systems. Summary of the Invention

[0011] To address the shortcomings of existing technologies, this utility model provides a paint supply system based on spray coating.

[0012] To achieve the above objectives, this utility model provides the following technical solution: A paint supply system based on spray coating, comprising a raw material tank, a buffer tank, a paint supply device, a mixing tank, a paint supply pipeline, a waste liquid tank, and a paint recovery pipeline. Several raw material tanks and buffer tanks are configured. The paint supply device is connected to the raw material tank via an insulated pipe. The paint supply device is connected to the buffer tank via a first thinner pipeline. The buffer tank is connected to the mixing tank via a second thinner pipeline. One end of the paint supply pipeline is connected to the mixing tank, and the other end of the paint supply pipeline is equipped with a first filter. The paint recovery pipeline is connected to the waste liquid tank and is equipped with a pneumatically controlled three-way valve. One end of the paint recovery pipeline is connected to the mixing tank, and the other end of the paint recovery pipeline is equipped with a second filter. Both the paint supply pipeline and the paint recovery pipeline are used to connect to a spray painting device.

[0013] Preferably, the mixing pipeline is equipped with a mixing pipe, one end of the mixing pipeline is connected to a diluent pipeline connected to several buffer tanks, the diluent pipeline is equipped with a mixing valve, and the other end of the mixing pipeline is connected to a mixing tank.

[0014] More preferably, the recycled paint pipeline is equipped with a diversion filter pipeline, and the diversion filter pipeline is equipped with at least two filters.

[0015] Preferably, the output end of the paint supply pipeline is equipped with a pneumatically controlled three-way valve, and the output end of the paint supply pipeline is connected to the paint mixing equipment and the paint return pipeline through the pneumatically controlled three-way valve, and the paint return pipeline is connected to the mixing tank.

[0016] Preferably, the filter section of the paint supply pipeline is configured with a second diversion filter pipeline via a pneumatically controlled three-way valve, and the second diversion filter pipeline includes at least two filter channels, and each filter channel is configured with at least three filters.

[0017] More preferably, the raw liquid tank, buffer tank, preparation tank and waste liquid tank are all equipped with level gauges.

[0018] Preferably, the mixing tank is equipped with a pneumatic stirrer and an air-cooled temperature controller.

[0019] Preferably, the buffer tank is equipped with a return pipe, which is connected to diluent line one, diluent line two, and the original liquid tank, and valves are provided at the connection points of the return pipe with diluent line one and diluent line two.

[0020] More preferably, the inlet of the first diluent pipeline is equipped with a valve and a pressure regulating valve, the outlet of the second diluent pipeline is equipped with a regulating valve, a flow meter and a control valve, and the paint supply pipeline and the paint recovery pipeline are equipped with pressure gauges.

[0021] Preferably, the paint supply equipment uses a diaphragm pump, the first and third filters use column filters, and the second filter uses a bag filter.

[0022] Compared with the prior art, this utility model provides a paint supply system based on spray coating, which has the following beneficial effects:

[0023] Improve the flexibility of paint supply:

[0024] Multiple stock solution tanks and buffer tanks are configured to meet the needs of different types or batches, improving the system's adaptability and flexibility.

[0025] The paint supply equipment is connected to the concentrate tank and buffer tank: the concentrate is transported and diluted through storage pipes and thinner pipelines, ensuring the continuity and stability of paint supply.

[0026] Precise proportions and efficient mixing:

[0027] The mixing tank receives the diluent from the buffer tank and then precisely mixes it through the mixing pipeline, ensuring the quality and consistency of the final paint output.

[0028] Highly efficient filtration mechanism:

[0029] A filter is installed on the paint supply line to perform preliminary filtration of the output paint, ensuring the purity of the paint input to the painting equipment.

[0030] The recycled paint pipeline is equipped with a pneumatic three-way valve and a filter 2: this allows the recycled paint to be selectively returned to the mixing tank or reused after secondary filtration, reducing waste and improving resource utilization.

[0031] Advanced optimization

[0032] Enhance paint mixing uniformity:

[0033] A mixing pipe is installed on the mixing pipeline: This allows the thinner to mix more evenly with the concentrate, improving the consistency and stability of the paint.

[0034] Precisely control the paint ratio:

[0035] A proportioning valve is installed on the second thinner line to ensure that the proportions of each component entering the proportioning tank are precise and controllable, further improving the quality of the paint.

[0036] Multiple filtration processes improve the quality of recycled paint:

[0037] The paint recycling pipeline is equipped with a diversion filter pipeline 1, which contains at least two filters 3, enhancing the filtration effect of the system and ensuring the quality of the recycled paint.

[0038] Multiple filtration and reflux mechanisms

[0039] Multiple filtration processes ensure paint purity:

[0040] The filter section of the paint supply pipeline is configured with a second branch filter pipeline: each filter channel is equipped with at least three filters to ensure the purity of the paint and prevent impurities from entering the painting equipment.

[0041] Intelligent reflux mechanism reduces waste:

[0042] The output end of the paint supply pipeline is equipped with a pneumatic three-way valve: this allows the paint to flow back into the mixing tank for reuse, reducing paint waste and improving resource utilization. Attached Figure Description

[0043] Figure 1 This is a schematic diagram illustrating the working principle of this utility model;

[0044] Figure 2 A schematic diagram showing the configuration of the paint supply pipeline and the return pipeline for this utility model;

[0045] Figure 3 This is a schematic diagram of the configuration and proportioning pipeline of this utility model;

[0046] In the diagram: 1. Stock solution tank; 2. Buffer tank; 3. Proportioning tank; 4. Paint supply equipment; 5. Thinner line 1; 6. Thinner line 2; 7. Paint supply line; 8. Waste liquid tank; 9. Recycled paint line; 10. Paint return line; 11. Diverter filter line 1; 12. Diverter filter line 2; 13. Filter 1; 14. Filter 2; 15. Filter 3; 16. Pressure regulating valve; 17. Return pipe; 18. Insulation pipe; 19. Regulating valve; 20. Flow meter; 21. Control valve; 22. Proportioning pipe; 23. Mixing pipe; 24. Proportioning valve; 25. Pneumatic stirrer; 26. Air-cooled temperature controller. Detailed Implementation

[0047] 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.

[0048] Please see Figure 1-3This utility model discloses a paint supply system based on spray coating, comprising a raw material tank 1, a buffer tank 2, a paint supply device 4, a mixing tank 3, a paint supply pipeline 7, a waste liquid tank 8, and a paint recovery pipeline 9. Several raw material tanks 1 and buffer tanks 2 are configured. The paint supply device 4 is connected to the raw material tank 1 via an insulation pipe 18. The paint supply device 4 is connected to the buffer tank 2 via a first thinner pipeline 5. The buffer tank 2 is connected to the mixing tank 3 via a second thinner pipeline 6. One end of the paint supply pipeline 7 is connected to the mixing tank 3, and the other end of the paint supply pipeline 7 is equipped with a first filter 13. The paint recovery pipeline 9 is connected to the waste liquid tank 8 and is equipped with a pneumatically controlled three-way valve. One end of the paint recovery pipeline 9 is connected to the mixing tank 3, and the other end of the paint recovery pipeline 9 is equipped with a second filter 14. Both the paint supply pipeline 7 and the paint recovery pipeline 9 are used to connect to a spray painting device.

[0049] This paint recycling and supply system aims to achieve efficient and environmentally friendly paint supply and recycling. Through a series of components (such as the concentrate tank 1, buffer tank 2, paint supply equipment 4, mixing tank 3, paint supply pipeline 7, waste liquid tank 8, and paint recycling pipeline 9) and optimized technical solutions, the system can automatically manage the mixing, supply, and recycling process of paint, ensuring production efficiency while reducing waste.

[0050] Working principles of various preferred technical solutions

[0051] Example 1: Basic Configuration

[0052] Original Liquid Tank 1: Stores undiluted paint concentrate. Several tanks are usually provided to meet the needs of different types or batches.

[0053] Buffer bucket 2: Used to store diluted paint, and multiple buckets are also provided to meet different process requirements.

[0054] Raw material delivery: The paint supply equipment 4 draws undiluted paint raw material from the raw material tank 1 through the heat-insulated pipe 18.

[0055] Dilution process: The stock solution enters the buffer tank 2 through the diluent pipeline 5. During this process, the dilution ratio can be controlled by adjusting valve 19 and pressure regulating valve 16 as needed.

[0056] Mixing and proportioning: The diluted paint continues to enter the mixing tank 3 through thinner pipeline 26. The output end of thinner pipeline 26 is controlled by regulating valve 19, flow meter 20 and control valve 21 to control the dilution ratio.

[0057] Paint supply equipment 4: A diaphragm pump is used to transport the raw liquid from the raw liquid tank 1 to the paint supply equipment 4, and then it is further connected to the buffer tank 2 through the diluent pipeline 5 for dilution treatment.

[0058] Mixing tank 3: Receives the thinner from the buffer tank 2 and mixes it precisely through the mixing pipe 22 to ensure that the final output paint meets the required concentration and quality standards.

[0059] Paint supply line 7 and paint recovery line 9:

[0060] Paint supply line 7: One end connects to the mixing tank 3, and the other end is connected to the painting equipment. Before entering the equipment, it undergoes preliminary filtration through filter 13. Figure 2 and Figure 3 As shown, in actual application, the paint supply line 7 can branch into two lines and be connected to the bottom and top of the mixing tank 3 respectively. Both lines are equipped with diaphragm pumps to ensure the tightness of the paint introduction.

[0061] Recycling pipe 9: Connected to waste liquid tank 8, the flow direction is controlled by a pneumatic three-way valve. It can either return directly to waste liquid tank 8 or be filtered twice by filter 14 before returning to mixing tank 3 for reuse.

[0062] Example 2: Advanced Optimization

[0063] Mixing pipe 23 on mixing pipe 22: A mixing pipe 23 is configured on mixing pipe 22 so that the thinner can be mixed more evenly with the concentrate, thereby improving the consistency and stability of the paint.

[0064] Diluent line proportioning valve 24: A proportioning valve 24 is installed on the diluent line to ensure that the proportions of each component entering the proportioning tank 3 are accurate and controllable.

[0065] Diversion Filter Pipeline 11: A diversion filter pipeline 11 is configured on the recovered paint pipeline 9, containing at least two filters 3 15 to enhance the filtration effect of the system and ensure the quality of the recovered paint, such as... Figure 2 and Figure 3 As shown, the diversion filter line 11 can be configured at the front end and the rear end of the waste liquid tank 8.

[0066] Example 3: Multiple Filtration and Recirculation Mechanism

[0067] Multiple filtration of paint supply line 7: The filtration section of paint supply line 7 is configured with a diversion filtration line 2 12 through a pneumatically controlled three-way valve. Each filtration channel is equipped with at least three filters 13 to ensure the purity of the paint.

[0068] Paint return pipe 10: The output end of the paint supply pipe 7 is equipped with a pneumatic three-way valve, which allows excess paint in the paint supply pipe 7 to flow back into the mixing tank 3 for reuse, reducing waste.

[0069] Detailed Workflow

[0070] Example 1: Basic Configuration Process

[0071] Raw material delivery: The paint supply equipment 4 draws undiluted paint raw material from the raw material tank 1 through the heat-insulated pipe 18.

[0072] Dilution process: The stock solution enters the buffer tank 2 through the diluent pipeline 5. During this process, the dilution ratio can be controlled by adjusting valve 19 and pressure regulating valve 16 as needed.

[0073] Proportioning and mixing: The diluted paint continues to enter the proportioning tank 3 through thinner pipe 26, and is fully mixed by the pneumatic agitator 25.

[0074] Paint supply process: The mixed paint is sent to the painting equipment through the paint supply pipeline 7, and the filter 13 on the paint supply pipeline 7 performs the initial filtration of the paint.

[0075] Recycling process: Used paint is collected in waste liquid tank 8 through paint recycling pipeline 9, and then undergoes secondary filtration through filter 14. Finally, the paint is returned to mixing tank 3 for reuse via a pneumatic three-way valve.

[0076] Example 2: Advanced Optimization Process

[0077] Before the diluted paint enters the mixing tank 3 through the thinner pipeline 26, a mixing pipeline 22 and a mixing pipeline 23 are configured. A mixing valve 24 is installed at the connection between the thinner pipeline 26 and the mixing pipeline. The proportion of each component is precisely controlled by the mixing valve 24, so that the thinner can be mixed more evenly with the original liquid, thereby improving the consistency and stability of the paint.

[0078] Multiple filtration: The recycled paint pipeline 9 is equipped with a diversion filter pipeline 11, which contains at least two filters 15 to enhance the filtration effect of the system and ensure the quality of the recycled paint.

[0079] Example 3: Multiple Filtration and Recirculation Mechanism Process

[0080] Multiple filtration: The filtration section of the paint supply line 7 is configured with a diversion filtration line 2 12 via a pneumatically controlled three-way valve. Each filtration channel is equipped with at least three filters 13 to ensure the purity of the paint.

[0081] Paint return pipe 10: The output end of the paint supply pipe 7 is equipped with a pneumatic three-way valve, which allows the paint to flow back into the mixing tank 3 for reuse, reducing waste.

[0082] Monitoring and Maintenance: Liquid level gauges are installed on the raw liquid tank 1, buffer tank 2, mixing tank and waste liquid tank 8 to monitor the liquid volume in real time; pressure gauges are installed on the paint supply line 7 and the recovery line to monitor the liquid volume in real time; a pneumatic stirrer 25 and an air-cooled temperature controller 26 are installed on the mixing tank 3 to keep the paint uniform and at a suitable temperature; a return pipe 17 is installed on the buffer tank 2 to allow excess paint to re-enter the system for recycling.

[0083] like Figure 3 As shown, this technical solution may also include Embodiment 4, in which the original liquid tank 1 is connected to the diluent pipeline 5 through a diaphragm pump. A flow meter and a proportioning valve 24 are configured on the diluent pipeline 5 and connected to the proportioning pipeline 22. During this process, a column filter is also configured on the diluent pipeline 5.

[0084] Each electrical component in this technical solution can be configured with a PLC programmable controller to achieve intelligent control with real-time monitoring.

[0085] The pneumatic agitator 25 and the air-cooled temperature controller 26 in this technical solution can adopt equipment structures with mature application technologies, such as the Desway 55-gallon sealed container pneumatic agitator 25, the IBC ton container special pneumatic agitator, the integrated air-cooled temperature control equipment, and the FZ series industrial-grade air-cooled circulating temperature controller.

[0086] 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 paint supply system based on spray coating, characterized in that, The system includes a raw material tank (1), a buffer tank (2), a paint supply device (4), a mixing tank (3), a paint supply pipeline (7), a waste liquid tank (8), and a paint recovery pipeline (9). Several raw material tanks (1) and buffer tanks (2) are provided. The paint supply device (4) is connected to the raw material tank (1) via an insulated pipe (18). The paint supply device (4) is connected to the buffer tank (2) via a first diluent pipeline (5). The buffer tank (2) is connected to the mixing tank (3) via a second diluent pipeline (6). One end of the paint supply pipeline (7) is connected to the mixing tank (3), and the other end of the paint supply pipeline (7) is equipped with a filter (13). The paint recovery pipeline (9) is connected to the waste liquid tank (8). The paint recovery pipeline (9) is equipped with a pneumatic three-way valve. One end of the paint recovery pipeline (9) is connected to the mixing tank (3), and the other end of the paint recovery pipeline (9) is equipped with a filter (14). Both the paint supply pipeline (7) and the paint recovery pipeline (9) are used to connect to the painting equipment.

2. The paint supply system based on spray coating according to claim 1, characterized in that, Includes a mixing pipe (22), on which a mixing pipe (23) is configured. One end of the mixing pipe (22) is connected to a diluent pipe (6) connected to several buffer tanks (2). A mixing valve (24) is provided on the diluent pipe. The other end of the mixing pipe (22) is connected to a mixing tank (3).

3. The paint supply system based on spray coating according to claim 1, characterized in that, The recycled paint pipeline (9) is equipped with a diversion filter pipeline (11), and at least two filters (15) are provided on the diversion filter pipeline (11).

4. The paint supply system based on spray coating according to claim 1, characterized in that, The output end of the paint supply pipeline (7) is equipped with a pneumatic three-way valve. The output end of the paint supply pipeline (7) is connected to the paint mixing equipment and the return paint pipeline (10) through the pneumatic three-way valve, and the return paint pipeline (10) is connected to the mixing tank (3).

5. The paint supply system based on spray coating according to claim 1, characterized in that, The filter section of the paint supply pipeline (7) is configured with a diversion filter pipeline (12) via a pneumatic three-way valve, and the diversion filter pipeline (12) includes at least two filter channels, and each filter channel is configured with at least three filters (13).

6. The paint supply system based on spray coating according to claim 1, characterized in that, The raw liquid tank (1), buffer tank (2), preparation tank and waste liquid tank (8) are all equipped with level gauges.

7. The paint supply system based on spray coating according to claim 1, characterized in that, The mixing tank (3) is equipped with a pneumatic stirrer (25) and an air-cooled temperature controller (26).

8. The paint supply system based on spray coating according to claim 1, characterized in that, The buffer tank (2) is equipped with a return pipe (17), which is connected to the first diluent pipe (5), the second diluent pipe (6) and the original liquid tank (1). Valves are provided at the connection points of the return pipe (17) with the first diluent pipe (5) and the second diluent pipe (6).

9. The paint supply system based on spray coating according to claim 1, characterized in that, The inlet of the first diluent pipeline (5) is equipped with a valve and a pressure regulating valve (16), the outlet of the second diluent pipeline (6) is equipped with a regulating valve (19), a flow meter (20) and a control valve (21), and pressure gauges are installed on the paint supply pipeline (7) and the paint recovery pipeline (9).

10. The paint supply system based on spray coating according to claim 3, characterized in that, The paint supply equipment (4) uses a diaphragm pump, the first filter (13) and the third filter (15) are column filters, and the second filter (14) is a bag filter.

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