A spraying device for plastic spraying and adhesion enhancement pretreatment
By designing an electric roller and a wastewater treatment system inside the spray tank, multi-faceted spray cleaning of plastic sheets and wastewater recycling were achieved, solving the problems of low efficiency and water waste in existing equipment, improving spray cleaning efficiency and saving cleaning fluid costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING MEXIN MESSON DOORS IND CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-06-09
AI Technical Summary
Existing spray cleaning equipment cannot achieve continuous and uninterrupted spray cleaning of large quantities of plastic sheets, resulting in low efficiency and wastewater that cannot be recycled, causing a waste of water resources.
A spraying device was designed, comprising a spraying box, an electric roller, a spraying mechanism, a material receiving mechanism, and a wastewater treatment mechanism. The electric roller transports plastic sheets for multi-face spraying and cleaning, and the wastewater is filtered and recycled using a wastewater collection funnel, a collection box, a liquid pump, and a return pipe.
It enables rapid, multi-faceted spray cleaning of plastic sheets, improving efficiency, and saves cleaning fluid costs and avoids water waste through wastewater filtration and recycling.
Smart Images
Figure CN224332891U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic product processing technology, specifically to a spraying device for pretreatment of powder coating adhesion enhancement. Background Technology
[0002] Powder coating adhesion enhancement treatment refers to a series of measures taken during the powder coating process to improve the adhesion between the plastic surface and the powder coating layer, ensuring that the powder coating layer can firmly adhere to the plastic substrate and prevent paint peeling or flaking. The initial step involves sanding, rust removal, and cleaning the surface of the plastic sheet to make the substrate surface smooth, free of contaminants and oxide layers, providing a good adhesion base. However, existing technologies have the following problems:
[0003] Because existing spray cleaning devices can only perform spray cleaning on individual substrates when spraying plastic sheets, they cannot continuously spray and clean large batches of plastic sheets, which affects the efficiency of plastic sheet spray cleaning. At the same time, existing spray devices need to continuously spray and clean a large number of plastic sheets, which generates a large amount of wastewater mixed with impurities. However, this wastewater is often discharged directly, resulting in a waste of water resources. Utility Model Content
[0004] This invention provides a spraying device for pretreatment of powder coating adhesion enhancement, in order to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] A spraying device for pretreatment of powder coating adhesion enhancement includes a spraying box, a spraying mechanism at the top of the spraying box, a material receiving mechanism at the front end of the spraying box, a material feeding temporary plate fixedly installed at the rear side of the spraying box, a wastewater treatment mechanism at the bottom of the spraying box, and box openings penetrating the inner cavity on both the front and rear sides of the spraying box. A plurality of electric rollers are evenly arranged below the inner cavity of the spraying box, and a second spray box is arranged between two adjacent electric rollers. The left and right sides of the second spray box are fixedly connected to the left and right sides of the inner wall of the spraying box, respectively. A first spray box is arranged above the second spray box, and a plurality of spray heads are evenly fixedly connected to the opposite surfaces of the first and second spray boxes.
[0007] The spraying mechanism includes a cleaning fluid storage tank, and a spraying water pump is installed on the front side of the cleaning fluid storage tank. Both the cleaning fluid storage tank and the spraying water pump are fixedly installed on the top of the spraying tank. The input end of the spraying water pump extends to the bottom of the inner cavity of the cleaning fluid storage tank, and the output end of the spraying water pump is fixedly connected to an outlet pipe. Two connecting pipes are fixedly connected to the left side of the outlet pipe. The other ends of the two connecting pipes extend into the inner cavity of the spraying tank and are respectively fixedly connected to the first spray box and the second spray box.
[0008] A further improvement of the present invention is that: a covered replenishment pipe is fixedly installed on the top of the cleaning fluid storage tank, which penetrates its inner cavity, and the electric rollers are thinner in the middle and thicker on both sides.
[0009] A further improvement of the present invention is that the receiving mechanism includes a receiving plate, which is fixedly installed on the front side of the spray box. The top of the receiving plate has an inclined groove that extends through its rear side. The bottom of the inclined groove is a slope. Several rotating rollers are evenly and movably installed between the left and right sides of the inclined groove.
[0010] A further improvement of this utility model is that: inclined brackets are fixedly installed on the top left and right sides of the receiving plate, and the other ends of the two inclined brackets are fixedly connected to the front left and right sides of the spray box respectively.
[0011] A further improvement of this utility model is that: guide plates are fixedly installed on both the left and right sides of the inner wall of the spray box, and the two guide plates are located below several box holes; the sewage treatment mechanism includes a sewage collection funnel, and a connecting frame is fixedly installed through the top of the sewage collection funnel; the top of the connecting frame is fixedly connected to the bottom of the spray box and passes through its inner cavity; and the opposite ends of the two guide plates are located above the inner ring of the connecting frame.
[0012] A further improvement of this utility model is that: the inner wall of the connecting frame is provided with slots on the left, right and rear sides, the inner side of the slot is slidably engaged with the outer filter frame, the inner ring of the outer filter frame is fixedly installed with a filter screen, and the front end of the outer filter frame extends through to the front side of the connecting frame and is fixedly installed with a pull handle.
[0013] A further improvement of this utility model is that: a collection box penetrating its inner cavity is fixedly installed at the bottom of the sewage collection funnel, a liquid pump is fixedly installed on the left side of the collection box, the input end of the liquid pump penetrates to the bottom of the inner cavity of the collection box, a return pipe is fixedly connected to the output end of the liquid pump, and the other end of the return pipe is fixedly connected to the top of the cleaning liquid storage tank and penetrates its inner cavity.
[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0015] 1. This utility model provides a spraying device for pretreatment of powder coating adhesion enhancement. Through the cooperation between the electric roller, the spraying mechanism and the receiving mechanism, the plastic sheet before powder coating adhesion enhancement can be continuously and rapidly cleaned on multiple front and back sides during spray cleaning, which effectively improves the spray cleaning efficiency of the plastic sheet and facilitates the rapid progress of the next operation.
[0016] 2. This utility model provides a spraying device for pretreatment of powder coating adhesion enhancement. Through the cooperation of the sewage collection funnel, collection box, liquid pump, return pipe and filter screen, the sewage generated by spraying can be collected after filtration and can be directly put back into the spraying cycle for reuse, saving the cost of spray cleaning solution and avoiding waste. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic cross-sectional view of the spray box body of this utility model;
[0019] Figure 3 This is a schematic diagram of the receiving mechanism of the present invention.
[0020] Figure 4 This is a schematic diagram of the sewage treatment mechanism of this utility model;
[0021] Figure 5 This is a schematic diagram of the collection box structure of this utility model.
[0022] In the diagram: 1. Spray box; 11. Box opening; 12. Electric roller; 13. First spray box; 14. Second spray box; 15. Spray head; 16. Guide plate; 2. Spraying mechanism; 21. Cleaning solution storage tank; 22. Spray water pump; 23. Covered replenishment pipe; 24. Discharge pipe; 25. Connecting pipe; 3. Receiving mechanism; 31. Receiving plate; 32. Inclined trough; 33. Rotary roller; 34. Inclined support; 4. Feeding temporary plate; 5. Wastewater treatment mechanism; 51. Wastewater collection funnel; 511. Collection box; 512. Liquid pump; 513. Return pipe; 52. Connecting frame; 53. Slot; 54. Filter frame; 55. Filter screen; 56. Pull handle. Detailed Implementation
[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0024] like Figure 1 , Figure 2 As shown, this utility model provides a spraying device for pretreatment of powder coating adhesion enhancement, including a spraying box 1, a spraying mechanism 2 at the top of the spraying box 1, a receiving mechanism 3 at the front end of the spraying box 1, a feeding temporary plate 4 fixedly installed at the rear side of the spraying box 1, a wastewater treatment mechanism 5 at the bottom of the spraying box 1, and box holes 11 penetrating the inner cavity of the spraying box 1 on both the front and rear sides. A plurality of electric rollers 12 are evenly arranged below the inner cavity of the spraying box 1, with a second spray box 14 between adjacent pairs of electric rollers 12. The left and right sides of the second spray box 14 are fixedly connected to the left and right sides of the inner wall of the spraying box 1, respectively. A first spray box 13 is arranged above the second spray box 14, and the first spray box 13 is connected to the second spray box 1. A number of spray heads 15 are evenly fixedly connected to the opposite side of the 4. The spray mechanism 2 includes a cleaning liquid storage tank 21. A spray water pump 22 is provided on the front side of the cleaning liquid storage tank 21. The cleaning liquid storage tank 21 and the spray water pump 22 are both fixedly installed on the top of the spray box 1. The input end of the spray water pump 22 extends to the bottom of the inner cavity of the cleaning liquid storage tank 21. The output end of the spray water pump 22 is fixedly connected to the outlet pipe 24. Two connecting pipes 25 are fixedly connected to the left side of the outlet pipe 24. The other ends of the two connecting pipes 25 extend into the inner cavity of the spray box 1 and are respectively fixedly connected to the first spray box 13 and the second spray box 14. A covered replenishment pipe 23 is fixedly installed on the top of the cleaning liquid storage tank 21, extending through its inner cavity. A number of electric rollers 12 are thinner in the middle and thicker on both sides.
[0025] In use, the plastic sheet to be cleaned, placed on the feeding temporary plate 4, is aligned with the box hole 11 at the rear end of the spray box 1 and placed into the inner cavity of the spray box 1. Then, by activating several electric rollers 12 powered by external wires, the sheet placed on the electric rollers 12 can be conveyed forward. Since the middle of the electric roller 12 is narrow and concave, the sheet can be conveyed in a centered position as much as possible. When it reaches the area between the first spray box 13 and the second spray box 14, the cleaning solution that has been added to the cleaning solution temporary tank 21 in advance through the covered replenishment pipe 23 can be extracted by the spray water pump 22 and injected into the outlet pipe 24. Then, by connecting the first spray box 13 and the second spray box 14 through two connecting pipes 25, the cleaning solution can be sprayed on the front and back of the sheet through several spray heads 15 installed on the opposite sides of the first spray box 13 and the second spray box 14. As the sheet is slowly conveyed forward, the spray cleaning of the entire sheet is completed. Then, the next plastic sheet can be put in for spraying.
[0026] like Figure 3As shown, the receiving mechanism 3 includes a receiving plate 31, which is fixedly installed on the front side of the spray box 1. The top of the receiving plate 31 is provided with an inclined groove 32 that extends through its rear side. The bottom of the inclined groove 32 is a slope. Several rotating rollers 33 are evenly and movably installed between the left and right sides of the inclined groove 32. Inclined brackets 34 are fixedly installed on the top left and right sides of the receiving plate 31. The other ends of the two inclined brackets 34 are fixedly connected to the front left and right sides of the spray box 1, respectively.
[0027] After being sprayed cleaned, the boards can pass through the box opening 11 on the front side of the spray box 1 and fall onto several rotating rollers 33 on the top of the receiving plate 31. The residual water can fall onto the inclined surface of the inclined groove 32 through the gap between two adjacent rotating rollers 33. With the help of the backward tilting angle, the dripping cleaning liquid is concentrated and flows back into the inner cavity of the spray box 1 and discharged together with the sewage generated by the spraying. The boards after the residual cleaning liquid drips can be directly removed for the next air drying operation.
[0028] like Figure 4 , Figure 5 As shown, guide ramps 16 are fixedly installed on both the left and right sides of the inner wall of the spray box 1. Both guide ramps 16 are located below several box openings 11. The sewage treatment mechanism 5 includes a sewage collection funnel 51. A connecting frame 52 is fixedly installed through the top of the sewage collection funnel 51. The top of the connecting frame 52 is fixedly connected to the bottom of the spray box 1 and extends through its inner cavity. The opposite ends of the two guide ramps 16 are located above the inner ring of the connecting frame 52. Slots 53 are provided on the left, right, and rear sides of the inner wall of the connecting frame 52. A filter outer frame 54 is slidably engaged inside the slots 53. A filter screen 55 is fixedly installed on the inner ring of the filter outer frame 54. The filter screen 55 can be used for... Using various existing materials such as PP cotton, activated carbon, ceramics, stainless steel mesh and ultrafiltration membranes, as long as they have the function of filtering impurities, they are sufficient. We will not go into too much detail here. The front end of the filter frame 54 extends to the front side of the connecting frame 52 and is fixedly installed with a pull handle 56. The bottom of the sewage collection funnel 51 is fixedly installed with a collection box 511 that runs through its inner cavity. The left side of the collection box 511 is fixedly installed with a liquid pump 512. The input end of the liquid pump 512 extends to the bottom of the inner cavity of the collection box 511. The output end of the liquid pump 512 is fixedly connected to a return pipe 513. The other end of the return pipe 513 is fixedly connected to the top of the cleaning liquid storage tank 21 and runs through its inner cavity.
[0029] Wastewater generated during spraying in the inner cavity of the spray box 1 can fall through the gap between two adjacent electric rollers 12 and be concentrated into the inner cavity of the connecting frame 52 by the guide plate 16. Thus, when passing through the filter screen 55 of the inner ring of the filter outer frame 54, the wastewater is filtered, and the clean cleaning liquid after filtration flows into the inner cavity of the collection box 511 through the wastewater collection funnel 51. When it is necessary to clean the filter material on the top of the filter screen 55, simply pull the filter outer frame 54 forward with the pull handle 56 to remove it from the connecting frame 52. After cleaning, the filter outer frame 54 can be re-aligned with the front hole of the connecting frame 52 and inserted into the slot 53 to complete the installation. The cleaning liquid that has entered the collection box 511 can be extracted by starting the liquid pump 512 and fed into the inner cavity of the cleaning liquid storage tank 21 through the return pipe 513 for recycling and reuse, saving the cost of cleaning liquid used for spraying.
[0030] The working principle of this spray device for pretreatment to enhance adhesion in powder coating will be explained in detail below.
[0031] like Figure 1-5As shown, during use, the plastic sheet to be cleaned, placed on the feeding temporary plate 4, is aligned with the box hole 11 at the rear end of the spray box 1 and placed into the inner cavity of the spray box 1. Then, by activating several electric rollers 12 powered by external wires, the sheet placed on the electric rollers 12 can be conveyed forward. At the same time, because the middle of the electric roller 12 is narrower and concave, the sheet can be conveyed in a centered position as much as possible. When it reaches the area between the first spray box 13 and the second spray box 14, the cleaning solution temporary storage tank 21 can be pre-emptively pumped by the spray water pump 22. The cleaning solution added to the capped replenishment pipe 23 is extracted and injected into the outlet pipe 24. Then, through two connecting pipes 25, it is connected to the first spray box 13 and the second spray box 14. This allows the cleaning solution to be sprayed onto both sides of the passing board using several spray heads 15 mounted opposite each other on the first and second spray boxes 13 and 14. As the board is slowly conveyed forward, the entire board is sprayed and cleaned. The board then passes through the opening 11 on the front of the spray box 1 and lands on several rotating rollers 33 on the top of the receiving plate 31. Residual water is then effectively removed. The cleaning liquid drips onto the inclined surface of the inclined trough 32 through the gap between two adjacent rotating rollers 33. The backward tilt angle causes the dripping cleaning liquid to flow back into the inner cavity of the spray box 1, where it is discharged along with the wastewater generated during spraying. Wastewater generated during spraying in the inner cavity of the spray box 1 can fall through the gap between two adjacent electric rollers 12 and is guided by the guide plate 16 into the inner cavity of the connecting frame 52. This allows the wastewater to be filtered as it passes through the filter screen 55 on the inner ring of the outer filter frame 54. The filtered, clean cleaning liquid is then collected by the wastewater collection funnel 51. The cleaning fluid flows into the inner cavity of the collection box 511. When it is necessary to clean the filter material on the top of the filter screen 55, simply pull the filter outer frame 54 forward with the pull handle 56 to detach it from the connecting frame 52. After cleaning, the filter outer frame 54 can be re-aligned with the front hole of the connecting frame 52 and inserted into the slot 53 to complete the installation. The cleaning fluid that enters the collection box 511 can be extracted by starting the pump 512 and fed into the inner cavity of the cleaning fluid storage box 21 through the return pipe 513 for recycling and reuse, saving the cost of cleaning fluid used for spraying.
[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A spraying device for pretreatment of powder coating adhesion enhancement, comprising a spraying chamber (1), characterized in that: The top of the spray box (1) is provided with a spraying mechanism (2), the front end of the spray box (1) is provided with a receiving mechanism (3), the rear side of the spray box (1) is fixedly installed with a feeding temporary plate (4), the bottom of the spray box (1) is provided with a sewage treatment mechanism (5), the front and rear sides of the spray box (1) are provided with box holes (11) that penetrate its inner cavity, a number of electric rollers (12) are evenly arranged below the inner cavity of the spray box (1), a second spray box (14) is arranged between two adjacent electric rollers (12), the left and right sides of the second spray box (14) are fixedly connected to the left and right sides of the inner wall of the spray box (1) respectively, a first spray box (13) is arranged above the second spray box (14), and a number of spray heads (15) are evenly fixedly connected to the opposite surfaces of the first spray box (13) and the second spray box (14). The spraying mechanism (2) includes a cleaning fluid storage tank (21). A spraying water pump (22) is provided on the front side of the cleaning fluid storage tank (21). The cleaning fluid storage tank (21) and the spraying water pump (22) are both fixedly installed on the top of the spraying box body (1). The input end of the spraying water pump (22) extends to the bottom of the inner cavity of the cleaning fluid storage tank (21). The output end of the spraying water pump (22) is fixedly connected to an outlet pipe (24). Two connecting pipes (25) are fixedly connected to the left side of the outlet pipe (24). The other ends of the two connecting pipes (25) extend into the inner cavity of the spraying box body (1) and are respectively fixedly connected to the first spray box (13) and the second spray box (14).
2. The spraying device for pretreatment of powder coating adhesion enhancement according to claim 1, characterized in that: The top of the cleaning fluid storage tank (21) is fixedly installed with a capped replenishment pipe (23) that runs through its inner cavity, and the electric rollers (12) are thinner in the middle and thicker at both ends.
3. The spraying device for pretreatment of powder coating adhesion enhancement according to claim 1, characterized in that: The receiving mechanism (3) includes a receiving plate (31), which is fixedly installed on the front side of the spray box (1). The top of the receiving plate (31) is provided with an inclined groove (32) that runs through its rear side. The bottom of the inclined groove (32) is a slope. Several rotating rollers (33) are evenly and movably installed between the left and right sides of the inclined groove (32).
4. The spraying device for pretreatment of powder coating adhesion enhancement according to claim 3, characterized in that: Inclined brackets (34) are fixedly installed on the top left and right sides of the receiving plate (31), and the other ends of the two inclined brackets (34) are fixedly connected to the front left and right sides of the spray box (1).
5. The spraying device for pretreatment of powder coating adhesion enhancement according to claim 1, characterized in that: The spray box (1) has two guide plates (16) fixedly installed on the left and right sides of its inner wall. The two guide plates (16) are located below several box holes (11). The sewage treatment mechanism (5) includes a sewage collection funnel (51). A connecting frame (52) is fixedly installed through the top of the sewage collection funnel (51). The top of the connecting frame (52) is fixedly connected to the bottom of the spray box (1) and passes through its inner cavity. The opposite ends of the two guide plates (16) are located above the inner ring of the connecting frame (52).
6. The spraying device for pretreatment of powder coating adhesion enhancement according to claim 5, characterized in that: The inner wall of the connecting frame (52) is provided with slots (53) on the left, right and rear sides. The inner side of the slots (53) is slidably engaged with the outer filter frame (54). The inner ring of the outer filter frame (54) is fixedly installed with a filter screen (55). The front end of the outer filter frame (54) extends through to the front side of the connecting frame (52) and is fixedly installed with a pull handle (56).
7. A spraying device for pretreatment of powder coating adhesion enhancement according to claim 6, characterized in that: The bottom of the sewage collection funnel (51) is fixedly installed with a collection box (511) that penetrates its inner cavity. A liquid pump (512) is fixedly installed on the left side of the collection box (511). The input end of the liquid pump (512) penetrates to the bottom of the inner cavity of the collection box (511). The output end of the liquid pump (512) is fixedly connected to a return pipe (513). The other end of the return pipe (513) is fixedly connected to the top of the cleaning liquid storage tank (21) and penetrates its inner cavity.