Coating spray apparatus for metal product processing

Abstract

The utility model relates to spraying equipment technical field especially is used to the coating spraying equipment of metal product processing, including the shell, still include: the water tank of fixed communication in the lateral wall of shell, be located at the water tank intercommunication of shell surface and, the water tank is communicated with the water tank of the water tank, the water overflowed in the water tank flows along the surface of the inclined plate and forms the water curtain, be located at the gauze of the inclined plate below and the inner chamber of shell is separated with the water tank, and the gauze is fixedly connected on the water tank and is used for the gas of the inner chamber of shell to be extracted via the gauze axial flow fan, through setting up water tank, water tank, inclined plate, gauze and axial flow fan, has constructed a water circulation filtration system and directional air current system.

Description

Technical Field

[0001] This utility model relates to the field of spraying equipment technology, and in particular to coating spraying equipment for metal product processing. Background Technology

[0002] Metal products are widely used in various fields due to their high strength and plasticity. However, when metal products are exposed to the natural environment for a long time, they are affected by factors such as moisture, oxygen, and ultraviolet radiation, leading to oxidation and corrosion. This not only affects the appearance of the metal products, but also, as the corrosion deepens, damages the internal structure of the metal products, thus shortening their service life. To improve the oxidation resistance and decorative effect of metal products, it is usually necessary to apply a coating to their surface after processing.

[0003] In existing technologies, some customized metal products, due to their varied shapes and small batch sizes, often require manual spraying. However, the coatings used in spraying typically contain large amounts of organic solvents, pigments, resins, and various additives. These substances generate a large amount of harmful gases and paint mist particles during atomization and volatilization. If operators inhale these harmful substances for a long time, they are highly susceptible to occupational diseases such as respiratory illnesses and nervous system damage, seriously endangering their health. Furthermore, the paint mist particles generated during the spraying process can diffuse into the working environment, polluting the air and causing adverse environmental impacts.

[0004] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a coating spraying device for metal product processing.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a coating spraying device for metal product processing, including a housing, and further comprising:

[0007] A water tank fixedly connected to the side wall of the outer casing;

[0008] A water tank disposed on the surface of the outer shell and communicating with the water tank;

[0009] An inclined plate is installed at an angle inside the outer shell. Water overflowing from the water tank flows along the surface of the inclined plate to form a water curtain.

[0010] A grid located below the inclined plate that separates the inner cavity of the outer shell from the water tank;

[0011] And an axial flow fan fixedly connected to the water tank and used to extract gas from the inner cavity of the outer casing through the grid.

[0012] Preferred options also include:

[0013] A water pump is fixedly installed on the side wall of the water tank, and the output end of the water pump is connected to the water tank.

[0014] And a water receiving tray disposed between the inclined plate and the grid to receive water flowing down the inclined plate.

[0015] Preferably, a strip groove is provided through the side wall of the outer shell to connect to the water tank. The water pumped to the water tank overflows through the arc plate inside the water tank and through the strip groove to the inclined plate.

[0016] Preferably, the outlet end of the axial flow fan is connected to an outlet pipe.

[0017] Preferably, it also includes a screen fixedly installed inside the water tank, the screen being used to filter the water passing through the grid.

[0018] Preferably, it also includes a turntable disposed at the bottom of the inner cavity of the outer casing;

[0019] And a control disk located inside the housing and connected to the turntable in a transmission manner, the control disk being used to drive the turntable to rotate.

[0020] Preferably, a lighting lamp is installed at the top of the inner cavity of the housing.

[0021] Preferably, the side wall of the housing is provided with clearance holes for the pipes of the spraying equipment to pass through.

[0022] Preferably, the inner wall of the outer casing is provided with a hanging pin for suspending the spray gun.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] A water circulation filtration system and a directional airflow system were constructed by setting up a water tank, water trough, inclined plate, grid, and axial flow fan. When the axial flow fan is running, a negative pressure is formed in the inner cavity of the casing, guiding the air containing paint dust generated during the spraying operation to the inclined plate and grid. At the same time, water overflows from the water trough, forming a flowing water curtain along the surface of the inclined plate, and flows back to the water tank through the grid. When the air containing paint dust comes into contact with the water curtain and flows through the grid, the paint dust is effectively adsorbed and filtered by the water, thereby purifying the air inside the casing and preventing harmful paint dust from spreading into the working environment and causing harm to operators. This solves the technical problem of occupational diseases easily caused by manual spraying operations in existing technologies, and provides operators with a healthier and safer working environment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a coating spraying equipment used for metal product processing.

[0026] Figure 2 This is a schematic diagram of a coating spraying equipment used for metal product processing from another perspective.

[0027] Figure 3 This is a schematic diagram showing the connection between the air outlet pipe and the axial flow fan of a coating spraying equipment used for metal product processing.

[0028] Figure 4 This is a partial cross-sectional view of a coating spraying equipment used for metal product processing.

[0029] Figure 5 A schematic diagram showing the structure of the strip groove in a coating spraying equipment used for metal product processing.

[0030] In the diagram: 1. Outer shell; 2. Water tank; 3. Air outlet pipe; 4. Hanging nail; 5. Clearance hole; 6. Water pump; 7. Inclined plate; 8. Water tank; 9. Water receiving tray; 10. Axial flow fan; 11. Lighting lamp; 12. Turntable; 13. Grid; 14. Barrier net; 15. Control panel; 16. Strip trough. Detailed Implementation

[0031] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0032] With the continuous development of industrial technology, metal products are playing an increasingly important role in the national economy. To improve the performance and appearance of metal products, spraying technology is widely used for surface treatment. However, traditional metal product spraying, especially when processing customized, small-batch metal products, often relies on manual operation. While this manual spraying method is flexible, it presents a significant technical problem: the paint mist and volatile organic compounds generated during the spraying process pose a serious threat to the health of operators, and long-term exposure may lead to occupational diseases. Although some spraying equipment exists in the existing technology, effectively capturing and purifying the harmful substances generated during spraying remains a pressing problem for scenarios requiring manual hand-held spray guns for precise operations. This invention provides a coating spraying device for metal product processing. By constructing an integrated water circulation filtration and airflow control system, it effectively solves the problem of paint mist hazards to operators during manual spraying, significantly improving the working environment.

[0033] like Figures 1 to 5 The coating spraying equipment for metal product processing shown includes a housing 1, and further includes:

[0034] A water tank 2 is fixedly connected to the side wall of the outer casing 1;

[0035] A water tank 8 is provided on the surface of the outer casing 1 and communicates with the water tank 2;

[0036] An inclined plate 7 is set at an angle inside the cavity of the outer shell 1. Water overflowing from the water tank 8 flows along the surface of the inclined plate 7 to form a water curtain.

[0037] A grid 13 located below the inclined plate 7 and separating the inner cavity of the outer shell 1 from the water tank 2;

[0038] And an axial flow fan 10 fixedly connected to the water tank 2 and used to extract gas from the inner cavity of the outer casing 1 through the grid 13.

[0039] In practice, compared to existing technologies that involve manual spraying in open or semi-open spaces, this invention constructs a closed or semi-closed space with directional airflow and water curtain filtration by setting up a shell 1, water tank 2, water trough 8, inclined plate 7, grid 13, and axial flow fan 10. In existing technologies, paint mist diffuses uncontrollably, causing direct pollution to operators and the environment. This invention utilizes the negative pressure generated by the axial flow fan 10 to force air containing paint mist towards the water curtain formed by the inclined plate 7 and the area below the grid 13. The water curtain effectively captures atomized paint droplets in the air, while the grid 13 further filters the passing air and water. This integrated water filtration and airflow control system significantly improves the capture and purification efficiency of harmful paint mist generated during spraying, greatly reducing the risk of operators inhaling harmful substances—something difficult to achieve with simple ventilation or local exhaust devices in existing technologies. Therefore, this invention demonstrates significant advantages and innovation in solving occupational disease problems associated with manual spraying.

[0040] When using the coating spraying equipment for metal product processing according to this invention, an appropriate amount of water needs to be injected into the water tank 2 first. Then, the axial flow fan 10 is started. When the axial flow fan 10 is running, it draws air from the inner cavity of the outer shell 1 towards the water tank 2 through the grid 13, thereby creating a negative pressure area in the inner cavity of the outer shell 1 and generating a directional airflow from the spraying area to the grid 13. At the same time, the water in the water tank 2 is transported to the water tank 8. When the water level in the water tank 8 reaches a certain height, the water overflows from the water tank 8 and flows downward along the surface of the inclined plate 7, forming a continuous water curtain. When the operator sprays the metal workpiece in the inner cavity of the outer shell 1, the nozzle of the spray gun is usually pointed towards the metal workpiece and the inclined plate 7. The atomized paint droplets generated by the spraying are guided to the area of ​​the inclined plate 7 and the grid 13 by the directional airflow generated by the axial flow fan 10 and their own inertia. When the air containing paint droplets flows through the water curtain on the surface of the inclined plate 7, most of the paint droplets are captured and absorbed by the water curtain. Paint droplets not completely captured by the water curtain will flow downwards with the air and water, passing through the grid 13. The grid 13 serves two purposes: physical filtration and the disturbance created by the water flow as it passes through it, further promoting contact and fusion between the paint droplets and the water. The air filtered by the water curtain and grid 13 has a significantly reduced paint droplet content and is then extracted by the axial flow fan 10. The filtered water flows back to the water tank 2, completing a cycle. In this process, the outer casing 1 provides a closed operating space to prevent paint mist from spreading outwards; the water tank 2 stores the filtration water; the water trough 8 and the inclined plate 7 work together to form a highly efficient water curtain for initial paint droplet capture; the grid 13 serves as a channel for air and water flow and provides further filtration; and the axial flow fan 10 generates a directional airflow, directing the paint mist to the filtration area and discharging the purified air. In this way, this invention effectively controls harmful paint droplets generated during spraying within the equipment and purifies them with water, thereby protecting the health of operators and improving the working environment.

[0041] As one embodiment of this utility model, it also includes:

[0042] A water pump 6 is fixedly installed on the side wall of the water tank 2, and the output end of the water pump 6 is connected to the water tank 8;

[0043] And a water receiving tray 9 located between the inclined plate 7 and the grid 13 to receive the water flowing down the inclined plate 7.

[0044] In implementation, the water pump 6 can be any type of micro pump, such as a centrifugal pump, gear pump, or peristaltic pump, as long as it can provide sufficient water flow to meet the needs of water curtain formation. The water pump 6 can be controlled manually or automatically. For example, a level sensor can monitor the water level in the tank 8. When the water level is below a set value, the water pump 6 automatically starts; when the water level reaches the set value, the water pump 6 automatically stops. Thus, by adding the water pump 6 and the water collection tray 9, this invention achieves automated water circulation, eliminating the need for manual water addition and ensuring the continuity and stability of the water curtain. Simultaneously, the water collection tray 9 effectively collects the water flowing down from the inclined plate 7 and guides it to the grid 13, ensuring orderly water recovery and improving the efficiency and reliability of water circulation. Compared to solutions that rely solely on gravity to naturally form a water curtain, the water circulation system of this invention is more stable and reliable, adaptable to different working conditions, and provides a guarantee for effective filtration of paint mist.

[0045] As one embodiment of this utility model, a strip groove 16 is provided through the side wall of the outer shell 1 to connect the water tank 8. The water pumped by the water pump 6 to the water tank 8 overflows through the arc plate inside the water tank 8 and through the strip groove 16 to the inclined plate 7.

[0046] In implementation, to ensure the water flow is evenly distributed on the inclined plate 7, forming a continuous and uniform water curtain, this invention includes a strip-shaped channel 16. The length of the strip-shaped channel 16 corresponds to the width of the inclined plate 7, and its function is to evenly distribute the water overflowing from the water tank 8 across the entire width of the inclined plate 7. The water pumped by the water pump 6 first enters the interior of the water tank 8, where an arc-shaped plate is installed. This arc-shaped plate helps to stabilize the water flow. Then, the water overflows from the arc-shaped plate, passes through the strip-shaped channel 16, and finally flows onto the inclined plate 7.

[0047] As one embodiment of this utility model, the air outlet end of the axial flow fan 10 is connected to the air outlet pipe 3.

[0048] In implementation, to facilitate the discharge of gas extracted by the axial flow fan 10 to the outdoors or its connection to other waste gas treatment equipment, this invention connects an outlet pipe 3 to the outlet end of the axial flow fan 10. This outlet pipe 3 can be made of metal, plastic, or other suitable materials, and its shape can be a straight pipe, a bent pipe, or a flexible hose, as long as it allows for smooth gas discharge. The outlet pipe 3 and the outlet end of the axial flow fan 10 can be fixedly connected by flanges, threaded connections, or clamps to ensure a secure and airtight connection.

[0049] As one embodiment of this utility model, it also includes a screen 14 fixedly installed inside the water tank 2, which is used to filter the water passing through the grid 13.

[0050] In practice, to further improve the filtration effect of the water and prevent larger particles or paint films from entering the water tank 2 and being sucked in by the water pump 6, this invention includes a screen 14 fixedly installed inside the water tank 2, below the grid 13. The screen 14 can be made of metal wire, plastic mesh, or other materials with filtration functions, and its mesh size should be smaller than that of the grid 13 to achieve finer filtration. The screen 14 can be fixed to the inner wall of the water tank 2 by welding, bolting, or clipping, and its position should ensure effective interception of water flowing down from the grid 13.

[0051] The shape of the filter net 14 can be a flat net, an arc-shaped net, or a conical net, as long as it can effectively intercept impurities in the water. The material of the filter net 14 can be selected according to actual needs. For example, if it is necessary to filter acidic or alkaline substances, corrosion-resistant plastic or stainless steel materials can be used. The filter net 14 can be cleaned or replaced regularly to ensure its filtration effect.

[0052] Therefore, by adding a screen 14, this invention enables secondary fine filtration of the water, building upon the initial filtration by the grid 13. In particular, it effectively intercepts paint films or larger particles formed by paint foam accumulation in the water, preventing these impurities from entering the water tank 2 and being sucked into the water pump 6. This protects core components such as the water pump 6 and extends the service life of the equipment. Compared to filtration using only the grid 13, this invention more effectively removes impurities from the water, ensuring the stable operation of the water circulation system.

[0053] As one embodiment of the present invention, a turntable 12 is also provided at the bottom of the inner cavity of the outer shell 1;

[0054] And a control disk 15 located inside the housing 1 and connected to the turntable 12 in a transmission manner, the control disk 15 being used to drive the turntable 12 to rotate.

[0055] In practice, the diameter of the turntable 12 can be selected according to the size of the outer shell 1 and the size of the workpiece. Generally, the diameter of the turntable 12 should be slightly smaller than the inner cavity width of the outer shell 1 to ensure that the turntable 12 can rotate freely. The transmission connection between the turntable 12 and the control panel 15 can be achieved in various ways, such as gear transmission, belt transmission, or friction transmission.

[0056] As one embodiment of this utility model, a lighting lamp 11 is installed on the top of the inner cavity of the outer shell 1.

[0057] During implementation, by installing a lighting lamp 11 on the top of the inner cavity of the equipment, the problem of insufficient light inside the enclosed shell is effectively solved, providing operators with a clear and bright working field of vision, which helps to accurately observe the spraying situation on the surface of the workpiece, thereby ensuring the spraying quality and reducing problems such as missed spraying or over-spraying caused by unclear vision.

[0058] As one embodiment of this utility model, the side wall of the outer shell 1 is provided with a clearance hole 5 for the pipeline of the spraying equipment to pass through.

[0059] In practice, the clearance hole 5 can be circular, elliptical, or rectangular, as long as it allows the pipeline to pass through. The edges of the clearance hole 5 can be chamfered to prevent the pipeline from being scratched. A sealing ring can be installed around the clearance hole 5 to prevent gas from leaking out of the hole.

[0060] Therefore, by opening the clearance hole 5, this utility model provides a dedicated and convenient channel for the pipeline of the external spraying equipment to enter the inner cavity of the equipment, making the pipeline layout more regular, avoiding the risk of the pipeline being squeezed or worn by the edge of the box, and ensuring the airtightness and stability of the spraying system.

[0061] As one embodiment of this utility model, the inner wall of the outer shell 1 is provided with a hanging nail 4 for hanging the spray gun.

[0062] In implementation, the number of hanging nails 4 can be one or more; for example, multiple hanging nails 4 can be set for suspending different types of spray guns or spraying tools. The load-bearing capacity of the hanging nails 4 should meet the weight requirements of the spray gun to prevent the hanging nails 4 from breaking or deforming. The surface of the hanging nails 4 can be treated with anti-slip material to prevent the spray gun from slipping. Thus, by adding hanging nails 4, this utility model provides a fixed and safe storage location for the spray gun. During spraying breaks or when the work is completed, the spray gun can be securely hung up, avoiding damage or nozzle clogging that may be caused by placing the spray gun randomly, and making the work area more tidy and orderly.

[0063] Working principle of this utility model:

[0064] When in use, the user injects a certain amount of water into the water tank 2 on the outer shell 1, then connects the air inlet pipe of the exhaust gas treatment equipment to the air outlet pipe 3 above the water tank 2, then passes the pipe of the spraying equipment through the clearance hole 5 on the outer shell 1, then connects the spray gun suitable for customized metal product spraying to the pipe, and hangs the spray gun on the hanging nail 4 on the inner wall of the outer shell 1.

[0065] Then, the user controls the water pump 6 installed on the side wall of the water tank 2 to run. The water pump 6 draws water from the water tank 2 into the water tank 8 through the connecting pipe. After the water level in the water tank 8 overflows, the water will pass through the strip groove 16 and then flow down along the inclined plate 7, and then flow into the water receiving tray 9. After the water flows into the water receiving tray 9, it passes through the grid 13 and the baffle 14 and re-enters the water tank 2 for circulation. At this time, the user controls the axial flow fan 10 to run. The axial flow fan 10 drives the gas in the water tank 2 through the exhaust pipe 3 into the exhaust gas treatment equipment, and draws in the gas through the grid 13 to exhaust the air inside the outer casing 1. The entire preparation work is completed.

[0066] When the user is spraying, after turning on the light 11, the user first places the metal workpiece on the turntable 12, and then holds the spray gun to spray the metal workpiece. The nozzle of the spray gun is facing the metal workpiece and the inclined plate 7. During the spraying process, excess atomized paint droplets will flow towards the inclined plate 7 and the grid 13 with the airflow and its own inertia. On the one hand, water is used to absorb the atomized paint droplets in the air. On the other hand, the air containing atomized paint droplets needs to pass through the grid 13 and the barrier 14 together with the water and then enter the water tank 2. This effectively utilizes water to absorb the paint droplets in the air. When the user needs to adjust the spraying position, the user can turn the control panel 15 to drive the turntable 12 to rotate, thereby adjusting the orientation of the metal product and ensuring that the metal product can be sprayed from all directions.

[0067] The grid 13 is mainly used to prevent large objects from being sucked into the water tank 2 by the airflow during actual operation, which could damage the water pump 6 or the axial flow fan 10. The net 14 is set up because the atomized paint foam in the water can easily form a paint film on the water surface. By using the net 14 to intercept the paint film, the amount of paint entering the water pump 6 for circulation can be reduced, thus extending the service life of the equipment.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection claimed by this utility model, which is defined by the appended claims and their equivalents.

Claims

1. A coating spraying device for processing metal products, comprising a housing (1), characterized in that, Also includes: A water tank (2) is fixedly connected to the side wall of the outer shell (1); A water tank (8) is provided on the surface of the outer shell (1) and communicates with the water tank (2); An inclined plate (7) is inclinedly installed in the inner cavity of the outer shell (1). After the water in the water tank (8) overflows, it flows along the surface of the inclined plate (7) to form a water curtain. A grid (13) located below the inclined plate (7) and separating the inner cavity of the outer shell (1) from the water tank (2); And an axial flow fan (10) fixedly connected to the water tank (2) and used to extract gas from the inner cavity of the outer shell (1) via the grid (13).

2. The coating spraying equipment for metal product processing according to claim 1, characterized in that, Also includes: A water pump (6) is fixedly installed on the side wall of the water tank (2), and the output end of the water pump (6) is connected to the water tank (8); And a water receiving tray (9) provided between the inclined plate (7) and the grid (13) for receiving water flowing down from the inclined plate (7).

3. The coating spraying equipment for metal product processing according to claim 2, characterized in that, A strip groove (16) is provided through the side wall of the outer shell (1) to connect the water tank (8). The water pump (6) delivers water to the water tank (8) and overflows through the arc plate inside the water tank (8) through the strip groove (16) to the inclined plate (7).

4. The coating spraying equipment for metal product processing according to claim 1, characterized in that, The outlet end of the axial flow fan (10) is connected to an outlet pipe (3).

5. The coating spraying equipment for metal product processing according to claim 1, characterized in that, It also includes a screen (14) fixedly installed inside the water tank (2), the screen (14) being used to filter water passing through the grid (13).

6. The coating spraying equipment for metal product processing according to claim 1, characterized in that, It also includes a turntable (12) located at the bottom of the inner cavity of the outer shell (1); And a control disk (15) disposed inside the housing (1) and connected to the turntable (12) for driving the turntable (12) to rotate.

7. The coating spraying equipment for metal product processing according to claim 1, characterized in that, A lighting lamp (11) is installed on the top of the inner cavity of the outer shell (1).

8. The coating spraying equipment for metal product processing according to claim 1, characterized in that, The outer casing (1) has clearance holes (5) on its side wall for the pipeline of the spraying equipment to pass through.

9. The coating spraying equipment for metal product processing according to claim 1, characterized in that, The inner wall of the outer casing (1) is provided with a hanging nail (4) for suspending the spray gun.

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