Water-based paint wet-process centrifugal purification and recovery device
The water-based paint wet centrifugal purification and recovery device uses centrifugal force and condensation to convert paint mist into liquid and recover it, which solves the problems of large equipment footprint, high energy consumption and environmental pollution in the existing technology, and realizes efficient and safe water-based paint recycling and reuse.
Patent Information
- Application Number
- CN202423220969.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In existing spray painting processes, the methods for treating overspray paint mist have problems such as large equipment footprint, low recycling efficiency, high energy consumption, high cost, and serious environmental pollution. Moreover, existing recycling devices cannot effectively recycle and reuse water-based paints.
The water-based paint wet centrifugal purification and recovery device uses components such as a uniform air distribution network, spray support, condensation network, water filter network and dynamic interceptor to convert the paint mist into liquid and recover it by using centrifugal force and condensation. Combined with a circulating water tank, it achieves multi-stage purification and recovery.
It achieves efficient, safe, and low-energy water-based paint recycling, reduces environmental pollution, improves paint utilization, lowers production costs, and improves the operating environment, thus providing good environmental and economic benefits.
Smart Images
Figure CN223888284U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water-based paint recycling technology, specifically a water-based paint wet centrifugal purification and recycling device. Background Technology
[0002] In recent years, with the development of the spraying industry, water-based paints have been increasingly widely used in many industries such as automobile and parts manufacturing, shipbuilding and repair, furniture manufacturing, and wood product processing. However, most current spraying production processes are simple and the equipment is outdated. When using machines to spray large objects, at least 30% of the paint mist is lost, and when using manual spraying to paint small objects, at least 50% to 60% of the paint mist is lost. The paint mist fumes generated during the production process pose a significant threat to the health of workers and the surrounding environment. The sediment from the paint mist and the improper disposal of wastewater after simple water curtain treatment also pose a certain threat to the environment. Therefore, the pollution problem of the spraying process has become a prominent environmental issue in areas with concentrated spraying processing. In addition, the large amount of paint mist lost reduces the utilization efficiency of paint, requiring factories to purchase more paint and increasing costs. Considering environmental protection and economic benefits, it is necessary to treat the paint mist. However, various treatment methods on the market currently have certain problems, which are described in detail below:
[0003] The first type involves directly treating paint mist as volatile organic waste gas for decomposition and purification. Common treatment methods include combustion, catalytic combustion, activated carbon adsorption, photocatalytic oxidation, and biological methods. This type of treatment directly discharges and decomposes the oversprayed paint mist, and cannot recycle water-based paint, resulting in serious waste.
[0004] The second type involves recovering paint mist, commonly using methods such as the rotating cylinder method and the cooling method. The rotating cylinder method involves placing a rotating cylinder in the spraying area, its surface kept moist by an automatic spraying device. When the workpiece passes through, the oversprayed paint mist adheres to its surface, forming a paint layer of a certain thickness before flowing downwards. The recovered paint can be returned to the spraying line for reuse. However, this method requires a large equipment footprint and has low recovery efficiency. The cooling method involves placing a stainless steel plate after the workpiece is sprayed, causing moisture in the air to condense on the stainless steel surface (surface condensation is achieved by circulating cooling water at a temperature 3-5°C lower than the condensation temperature inside the plate), artificially creating a condensation state with absolute humidity. When the oversprayed paint mist reaches the stainless steel plate surface, it merges with the condensed moisture and flows downwards, collecting in an inclined groove. However, this method requires low-temperature circulating cooling water at around 7°C and a separate refrigeration unit, resulting in high energy consumption and maintenance costs, making it unsuitable for actual production. Therefore, a wet centrifugal purification and recovery device for water-based paint is needed. Utility Model Content
[0005] To achieve the above objectives, this utility model provides the following technical solution: a water-based paint wet centrifugal purification and recovery device, including an equipment mounting frame, on which a recovery component is provided. The recovery component is used to recover paint mist exhaust gas. The recovery component includes a uniform air distribution net component, a spray bracket A, a spray bracket B, a box cover plate component, a condensate net component, a water filter A, a water filter B, an equipment mounting frame, a recovery circulating water tank, a dynamic interceptor component, and a spray water pump.
[0006] The recycling component has a housing assembly fixedly connected to the equipment mounting frame. Multiple funnel hoppers are fixedly connected to the lower end of the housing assembly. Fixed partitions are fixedly connected inside the housing assembly, and mounting plates are installed inside the fixed partitions.
[0007] Preferably, multiple dynamic interceptor components are fixedly mounted on the mounting plate, and a connecting flange is fixedly connected to the front end of the equipment mounting frame.
[0008] Preferably, the spray bracket A and spray bracket B are fixedly installed inside the equipment mounting frame, and the spray bracket A and spray bracket B are located on both sides of the mounting plate.
[0009] Preferably, the air distribution network component is fixedly installed within the equipment mounting frame, and the air distribution network component is located between the connecting flange and the spray bracket A.
[0010] Preferably, the recycling water tank is located below the equipment mounting frame, and the spray water pump is fixedly installed on the outer surface of the recycling water tank.
[0011] Preferably, the outlet end of the spray pump is connected to the pipes of spray bracket A and spray bracket B respectively, and a box cover assembly is fixedly installed on the top wall of the equipment mounting frame.
[0012] Preferably, the water filter A and water filter B are fixedly installed inside the housing assembly, and the water filter A and water filter B are located between the rear end of the condensate mesh component and the equipment mounting frame.
[0013] (III) Beneficial Effects
[0014] Compared with the prior art, this utility model provides a wet centrifugal purification and recovery device for water-based paint, which has the following beneficial effects:
[0015] 1. This water-based paint wet centrifugal purification and recovery device avoids secondary pollution by not generating new pollutants during its use. Compared with catalytic combustion, it does not require the temperature conditions for dioxin generation and does not emit CO2 after incineration, thus ensuring high safety. Compared with activated carbon adsorption, photocatalytic oxidation, and biological methods, it does not generate hazardous solid waste requiring special treatment. Compared with traditional water curtain treatment, it does not generate large amounts of wastewater. At the same time, it improves the working environment for workers and the living environment for surrounding residents. This water-based paint wet centrifugal purification and recovery device not only reduces environmental pollution but also promotes the green development of enterprises, demonstrating significant environmental and social benefits.
[0016] 2. This water-based paint wet centrifugal purification and recovery device can obtain relatively pure solvents after purifying the sprayed water-based paint mist. These solvents can be recycled and reused, realizing resource recycling, improving paint utilization, and reducing production costs. It also reduces waste treatment costs, such as reducing waste paint treatment costs, and has good economic benefits. It changes the situation where paint mist exhaust gas treatment only involves investment without return, and plays a very good role in promoting enterprises to actively control pollution and reduce emissions and protect the environment.
[0017] 3. This water-based paint wet centrifugal purification and recovery device operates at normal temperature and pressure. During operation, it does not require high-temperature cracking of pollutants or low-temperature condensation of paint mist. The overall operation is simple, energy consumption is low, and operating and maintenance costs are low.
[0018] 4. This water-based paint wet centrifugal purification and recovery device is an integrated unit composed of multiple modules. It occupies a small area and achieves high recovery efficiency through multi-stage treatment.
[0019] 5. This water-based paint wet centrifugal purification and recovery device adopts a wet process, which eliminates the risk of fire and ensures long-term stable and safe operation of the equipment. Attached Figure Description
[0020] Figure 1 This is an exploded view of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the condenser mesh component of this utility model;
[0022] Figure 3 This is a schematic diagram of the spray bracket B structure of this utility model;
[0023] Figure 4 This is a schematic diagram of the structure of the spray water pump of this utility model.
[0024] In the diagram: 1. Connecting flange; 2. Air distribution mesh component; 3. Spray bracket A; 4. Mounting plate; 5. Spray bracket B; 6. Housing shell assembly; 7. Housing cover assembly; 8. Condensation mesh component; 9. Water filter A; 10. Water filter B; 11. Equipment mounting frame; 12. Recycled circulating water tank; 13. Dynamic interceptor component; 14. Fixed partition; 15. Funnel chamber; 16. Spray water pump. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0026] Please see Figure 1-4 This utility model provides a new technical solution: a water-based paint wet centrifugal purification and recovery device, including an equipment mounting frame 11, on which a recovery component is provided. The recovery component is used to recover paint mist exhaust gas. The recovery component includes a uniform air distribution net component 2, a spray bracket A3, a spray bracket B5, a box cover plate component 7, a condensate net component 8, a water filter A9, a water filter B10, an equipment mounting frame 11, a recovery circulating water tank 12, a dynamic interceptor component 13, and a spray water pump 16.
[0027] The equipment mounting frame 11 in the recycling component is fixedly connected to the housing assembly 6. Multiple funnels 15 are fixedly connected to the lower end of the housing assembly 6. A fixed partition 14 is fixedly connected inside the housing assembly 6, and an installation plate 4 is installed inside the fixed partition 14.
[0028] Furthermore, multiple dynamic interceptor components 13 are fixedly mounted on the mounting plate 4, and a connecting flange 1 is fixedly connected to the front end of the equipment mounting frame 11.
[0029] Furthermore, spray bracket A3 and spray bracket B5 are respectively fixedly installed inside the equipment mounting frame 11, with spray bracket A3 and spray bracket B5 located on both sides of the mounting plate 4.
[0030] Furthermore, the air distribution network component 2 is fixedly installed inside the equipment mounting frame 11, and the air distribution network component 2 is located between the connecting flange 1 and the spray bracket A3.
[0031] Furthermore, the recycling water tank 12 is located below the equipment mounting frame 11, and the spray water pump 16 is fixedly installed on the outer surface of the recycling water tank 12.
[0032] Furthermore, the outlet of the spray pump 16 is connected to the spray bracket A3 and the spray bracket B5 pipes respectively, and the box cover assembly 7 is fixedly installed on the top wall of the equipment mounting frame 11.
[0033] Furthermore, filter screens A9 and B10 are fixedly installed inside the housing assembly 6, with filter screens A9 and B10 located between the condensate mesh component 8 and the rear end of the equipment mounting frame 11.
[0034] In use, the water-based paint wet centrifugal purification and recovery device is placed and fixed on the equipment mounting frame 11. The connecting flange 1 is connected to the duct for collecting the oversprayed paint mist exhaust gas. Under the action of the induced draft fan, the oversprayed paint mist exhaust gas enters the wet centrifugal purification and recovery device. The paint mist exhaust gas first passes through the porous air distribution mesh component 2, which allows the oversprayed paint mist exhaust gas to enter the subsequent modules evenly, improving the utilization efficiency of the subsequent modules. Then it passes through the spray bracket A3. Utilizing the water-based paint's solubility in water, the spray can efficiently capture the paint mist in the exhaust gas, transferring most of the gaseous paint mist to liquid water. Then it passes through the dynamic interceptor component 13, which uses a high-speed rotating centrifugal method. Utilizing the principles of dynamic mechanical shielding, physical centrifugal removal, and eddy current effect, the aqueous solution containing dissolved paint mist is dynamically intercepted, achieving efficient recovery of paint mist and treatment of exhaust gas. After thorough purification, the housing cover assembly 7 waterproofs and dustproofs the control components of the dynamic interceptor component 13; then, the spray bracket B5 continues to spray water mist to absorb the paint mist in the exhaust gas; after passing through the condenser mesh component 8 with metal wire mesh filler, the gaseous paint mist is rapidly liquefied into a liquid solution under the action of the condenser, further improving the paint mist recovery efficiency and gas purification efficiency; finally, after passing through the water filter mesh A9 and water filter mesh B10, the water mist and paint mist and other liquid molecules can be intercepted again, ensuring that the paint mist is basically completely recovered and purified, and the emitted gas meets environmental protection requirements.
[0035] The paint mist aqueous solution that is captured, centrifuged, condensed, and filtered inside the wet centrifugal purification and recovery device flows to the bottom of the outer shell assembly 6. The bottom is designed in the form of multiple conical funnels to prevent paint mist from adhering and accumulating on the bottom plate of the box. It can quickly and effectively collect the paint mist aqueous solution intercepted in the upper part of the box into the recycling water tank.
[0036] The recycling water tank 12 is designed with a filtration section, a sedimentation section, a recycling water section, and a high-pressure water pump. The first two sections mainly remove solids and particulate matter from the recycling water solution to prevent clogging of the spray nozzles. The water solution is circulated multiple times between the recycling water section and the wet centrifugal purifier by the high-pressure water pump, so that the water-based paint is enriched in the recycling water solution. After reaching a certain concentration, the recycling water solution can be mixed with the high-concentration original water-based paint for use, realizing the recycling of water-based paint.
[0037] Structural Description:
[0038] Connection flange 1: Connection flange 1 is used to connect an external induced draft fan. Connection flange 1 is connected to the air duct that collects the paint mist exhaust gas from water-based paint spraying. Under the action of the induced draft fan, the paint mist exhaust gas enters the wet centrifugal purification and recovery device.
[0039] Air distribution mesh component 2: Paint mist exhaust gas first passes through air distribution mesh component 2, which can make the oversprayed paint mist exhaust gas enter the subsequent modules evenly, thus improving the utilization efficiency of the subsequent modules.
[0040] Spray Mount A3: The spray mount A3 utilizes the water-soluble properties of water-based paint, and the spray can efficiently capture paint mist in the exhaust gas, transferring most of the gaseous paint mist to liquid water.
[0041] Mounting plate 4: Mounting plate 4 is used to fix multiple dynamic interceptor components 13.
[0042] Spray bracket B5: has the same function as spray bracket A3.
[0043] Box cover assembly 7: Box cover assembly 7 is used to waterproof and dustproof the control components of multiple dynamic interceptor components 13.
[0044] Condensation mesh component 8: The use of metal wire mesh filler can directly increase the contact area with the gas, so that the gaseous paint mist can be quickly liquefied into a liquid state. When the paint mist changes from a gaseous state to a liquid state, it is beneficial to improve the paint mist recovery rate and the purification efficiency of the exhaust gas.
[0045] Water filter A9: It intercepts liquid molecules such as water mist and paint mist again, ensuring that almost all paint mist is recovered and purified, and the emitted gas meets environmental protection requirements.
[0046] Water filter B10: has the same function as water filter A9.
[0047] Recycling water tank 12: The recycling water tank 12 is designed with a filtration section, a sedimentation section, a recycling water section, and a high-pressure water pump. The first two sections mainly remove solids and particulate matter from the recycling water solution to prevent clogging of the spray nozzles. The water solution is circulated multiple times between the recycling water section and the wet centrifugal purifier by the high-pressure water pump, so that the water-based paint is enriched in the recycling water solution. After reaching a certain concentration, the recycling water solution can be mixed with the high-concentration original water-based paint for use, realizing the recycling of water-based paint.
[0048] Dynamic interceptor component 13: It adopts a high-speed rotating centrifugal method and utilizes the principles of dynamic mechanical shielding, physical centrifugal removal, and eddy current effect to dynamically intercept liquid paint mist solution, which can achieve efficient recovery of paint mist and thorough purification of exhaust gas.
[0049] Fixed partition 14: used to divide the equipment mounting frame 11 and fix the mounting plate 4.
[0050] Funnel 15: It adopts a high-speed rotating centrifugal method and utilizes the principles of dynamic mechanical shielding, physical centrifugal removal, and eddy current effect to dynamically intercept liquid paint mist solution, which can achieve efficient recovery of paint mist and thorough purification of exhaust gas.
[0051] Spray pump 16: Used to supply water to spray brackets A3 and B5.
[0052] 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 wet centrifugal purification and recovery device for water-based paint, characterized in that: The equipment includes an equipment mounting frame (11), on which a recovery component is provided. The recovery component is used to recover paint mist exhaust gas. The recovery component includes a uniform air distribution net component (2), a spray bracket A (3), a spray bracket B (5), a box cover plate component (7), a condensate net component (8), a water filter A (9), a water filter B (10), an equipment mounting frame (11), a recovery circulating water tank (12), a dynamic interceptor component (13), and a spray water pump (16). The equipment mounting frame (11) of the recycling component is fixedly connected to the housing assembly (6), and the lower end of the housing assembly (6) is fixedly connected to multiple funnels (15). The housing assembly (6) is fixedly connected to a fixed partition (14), and an installation plate (4) is installed inside the fixed partition (14).
2. The water-based paint wet centrifugal purification and recovery device according to claim 1, characterized in that: Multiple dynamic interceptor components (13) are fixedly mounted on the mounting plate (4), and the front end of the equipment mounting frame (11) is fixedly connected to a connecting flange (1).
3. The water-based paint wet centrifugal purification and recovery device according to claim 2, characterized in that: The spray bracket A (3) and spray bracket B (5) are fixedly installed in the equipment mounting frame (11), and the spray bracket A (3) and spray bracket B (5) are located on both sides of the mounting plate (4).
4. The water-based paint wet centrifugal purification and recovery device according to claim 3, characterized in that: The air distribution network component (2) is fixedly installed inside the equipment mounting frame (11), and the air distribution network component (2) is located between the connecting flange (1) and the spray bracket A (3).
5. The water-based paint wet centrifugal purification and recovery device according to claim 4, characterized in that: The recycling water tank (12) is located below the equipment mounting frame (11), and the spray water pump (16) is fixedly installed on the outer surface of the recycling water tank (12).
6. The water-based paint wet centrifugal purification and recovery device according to claim 5, characterized in that: The outlet of the spray pump (16) is connected to the spray bracket A (3) and spray bracket B (5) respectively. The box cover assembly (7) is fixedly installed on the top wall of the equipment mounting frame (11).
7. The water-based paint wet centrifugal purification and recovery device according to claim 6, characterized in that: The filter screen A (9) and filter screen B (10) are respectively fixedly installed inside the housing assembly (6), and the filter screen A (9) and filter screen B (10) are respectively located between the rear end of the condenser mesh component (8) and the equipment mounting frame (11).