A polyurethane paint spraying device

Abstract

This utility model relates to the technical field of paint spraying equipment, and discloses a polyurethane paint spraying device, including a trolley. A spraying device body is mounted on the side wall of the trolley, and a controller is mounted on the side wall of the spraying device body. A fixing tube is fixedly connected to the upper surface of the spraying device body, and a filter assembly is disposed inside the fixing tube. A spray gun is mounted on the side wall of the spraying device body, and a connecting assembly is disposed on the side wall of the spray gun. The filter assembly includes a filter frame, the side wall of which is slidably connected inside the fixing tube, and a fixing hole is formed inside the filter frame. In this utility model, when the filter frame slides into the fixing tube, it squeezes a locking block, causing a limiting block to compress a first spring. Once the fixing hole is aligned, the spring returns to its original position, fixing the locking block into the hole. A sealing gasket ensures a seal, enabling quick assembly and disassembly of the filter frame, facilitating the replacement of the filter material, and effectively filtering the paint. This solves the problems of cumbersome assembly and disassembly and easy leakage associated with traditional filter assemblies.

Description

Technical Field

[0001] This utility model relates to the field of paint spraying equipment technology, and in particular to a polyurethane paint spraying device. Background Technology

[0002] In industrial production, polyurethane paint is widely used for surface coating of workpieces made of metal, wood, plastic, and other materials due to its excellent wear resistance, corrosion resistance, and decorative properties. To achieve efficient and uniform spraying of polyurethane paint, specialized spraying equipment is required to complete a series of operations, including paint delivery, filtration, atomization, and spraying. Therefore, a reliable polyurethane paint spraying device is a key piece of equipment for improving coating quality and production efficiency. In existing technologies, polyurethane paint spraying devices typically include a storage mechanism, a delivery pump, a filter element, a spray gun, and connecting pipelines. The technical principle is as follows: the delivery pump extracts polyurethane paint from the storage mechanism, the filter element removes impurities from the paint, and then the paint is delivered to the spray gun via the connecting pipeline. The spray gun uses air pressure or mechanical pressure to atomize the paint, ultimately spraying it onto the surface of the workpiece to form a uniform coating. The filter element is usually installed on the delivery pipeline using bolts or flange connections to filter the paint. Because the filter components are connected by bolts or flanges, when the filter material needs to be replaced, multiple fasteners need to be removed with tools. The disassembly and assembly process is cumbersome and time-consuming. Moreover, repeated disassembly and assembly can easily lead to a decrease in the sealing performance of the connection parts, which can easily cause paint leakage and affect the normal progress of the spraying operation. Therefore, a polyurethane paint spraying device is proposed to solve the above problems. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a polyurethane paint spraying device, which aims to improve the problems of cumbersome disassembly and assembly and easy paint leakage of traditional filter components in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A polyurethane paint spraying device includes a trolley, a spraying device body is provided on the side wall of the trolley, a controller is provided on the side wall of the spraying device body, a fixing pipe is fixedly connected to the upper surface of the spraying device body, a filter assembly is provided inside the fixing pipe, a spray gun is provided on the side wall of the spraying device body, and a connecting assembly is provided on the side wall of the spray gun. The filter assembly includes a filter frame, the sidewall of which is slidably connected to the inside of the fixed tube. The filter frame has a fixing hole inside, and sealing gaskets are fixedly connected to both sides of the filter frame. A connecting tube is threadedly connected to the sidewall of the fixed tube, and a conveying tube is fixedly connected to the sidewall of the connecting tube. A transverse groove is opened inside the fixed tube, and a locking block is provided inside the fixed tube. A limiting block is fixedly connected to the sidewall of the locking block, and the sidewall of the limiting block is slidably connected to the inside of the transverse groove. A first spring is provided inside the fixed tube.

[0005] As a further description of the above technical solution: The connecting assembly includes a nozzle, and a mounting frame is fixedly connected to the side wall of the spray gun. The side wall of the nozzle is slidably connected inside the mounting frame.

[0006] As a further description of the above technical solution: The nozzle has a connection hole inside, and a sleeve is fixedly connected inside the mounting frame.

[0007] As a further description of the above technical solution: A fixing block is slidably connected inside the sleeve, and the side wall of the fixing block is slidably connected inside the connecting hole.

[0008] As a further description of the above technical solution: A second spring is fixedly connected to the side wall of the fixing block, and the side wall of the second spring is fixedly connected inside the sleeve.

[0009] As a further description of the above technical solution: A neodymium iron boron strong magnet is fixedly connected inside the mounting frame, and a neodymium iron boron strong magnet is fixedly connected to the side wall of the nozzle. The neodymium iron boron strong magnet is attracted to the neodymium iron boron strong magnet.

[0010] As a further description of the above technical solution: The side wall of the feed pipe is fixedly connected to the side wall of the spray gun, and the side wall of the clamping block is slidably connected to the transverse groove and the fixing hole.

[0011] As a further description of the above technical solution: One end of the first spring is fixedly connected inside the transverse groove, and the other end of the first spring is fixedly connected to the side wall of the limiting block.

[0012] This utility model has the following beneficial effects: 1. In this utility model, when installing the filter frame, it is slid into the fixing tube, and the squeezing block drives the limiting block to slide in the horizontal groove and compress the first spring. When the fixing hole is aligned with the squeezing block, the first spring resets and the squeezing block slides into the fixing hole to complete the fixing. The sealing gasket ensures the seal. This process enables the filter frame to be quickly disassembled and assembled, which is convenient for replacing the filter material and ensures that the paint is effectively filtered before entering the spray gun through the connecting pipe and the conveying pipe. It solves the problem that the traditional filter components are cumbersome to disassemble and assemble and are prone to paint leakage. The above technical solution improves the stability and sealing of paint filtration. 2. In this utility model, when installing the nozzle, it is slid into the mounting frame, and the first and second neodymium iron boron strong magnets are initially positioned. At the same time, the fixing block is squeezed to compress the second spring. When the connecting hole is aligned with the fixing block, the second spring resets and completes the fixation. External force can be applied during disassembly. This process enables quick replacement of the nozzle to meet different spraying needs and solves the problems of time-consuming replacement and inaccurate positioning of traditional nozzles. The above technical solution improves the ability to quickly switch between different spraying scenarios. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of a polyurethane paint spraying device proposed in this utility model; Figure 2 This is a schematic diagram of the back structure of a polyurethane paint spraying device proposed in this utility model; Figure 3 This is a schematic diagram of the internal structure of the fixed tube of a polyurethane paint spraying device proposed in this utility model. Figure 4 This is a schematic diagram of the spray gun structure of a polyurethane paint spraying device proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0014] Legend: 1. Trolley; 2. Spraying device body; 3. Controller; 4. Fixing pipe; 5. Connecting pipe; 6. Material conveying pipe; 7. Horizontal groove; 8. Locking block; 9. Limiting block; 10. First spring; 11. Filter frame; 12. Fixing hole; 13. Sealing gasket; 14. Spray gun; 15. Mounting frame; 16. Spray nozzle; 17. Connecting hole; 18. Sleeve; 19. Fixing block; 20. Second spring; 21. Neodymium iron boron strong magnet one; 22. Neodymium iron boron strong magnet two. Detailed Implementation

[0015] 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.

[0016] Reference Figures 1-3 This utility model provides an embodiment of a polyurethane paint spraying device, including a trolley 1. The trolley 1 carries the various components of the device, thereby enabling the overall movement of the device to adapt to the needs of different work locations. A spraying device body 2 is provided on the side wall of the trolley 1. The spraying device body 2 provides power for the paint delivery, ensuring a continuous and stable delivery of polyurethane paint to the spray gun 14. A controller 3 is provided on the side wall of the spraying device body 2. A fixing pipe 4 is fixedly connected to the upper surface of the spraying device body 2. A filter assembly is provided inside the fixing pipe 4. A spray gun 14 is provided on the side wall of the spraying device body 2. The spray gun 14 atomizes the paint and sprays it onto the surface of the workpiece, thereby achieving paint coating. A connecting assembly is provided on the side wall of the spray gun 14. The filter assembly includes a filter frame 11, which holds filter material to filter the passing paint and intercept particulate impurities. The side wall of the filter frame 11 is slidably connected to the inside of the fixing pipe 4. A fixing hole 12 is provided inside the filter frame 11, which cooperates with a locking block 8 to fix the filter frame 11. Sealing gaskets 13 are fixedly connected to both sides of the filter frame 11. The sealing gaskets 13 are used to enhance the sealing between the filter frame 11 and the inner wall of the fixed pipe 4, thereby preventing the paint from leaking from the gaps. A connecting pipe 5 is threadedly connected to the side wall of the fixed pipe 4. The connecting pipe 5 is used to connect the fixed pipe 4 and the conveying pipe 6. The threaded connection method facilitates disassembly and installation. The conveying pipe 6 is fixedly connected to the side wall of the connecting pipe 5. A transverse groove 7 is opened inside the fixed pipe 4. The transverse groove 7 is used to provide guidance and space for the sliding of the limiting block 9, thereby ensuring that the limiting block 9 drives the locking block 8 to move smoothly. The fixed tube 4 is equipped with a locking block 8 inside. The side wall of the locking block 8 is fixedly connected to a limiting block 9. The side wall of the limiting block 9 is slidably connected inside the transverse groove 7. The fixed tube 4 is equipped with a first spring 10. The first spring 10 is used to provide elastic force for the locking block 8, so that the locking block 8 can be tightly locked into the fixing hole 12. The side wall of the conveying tube 6 is fixedly connected to the side wall of the spray gun 14. The side wall of the locking block 8 is slidably connected to the transverse groove 7 and the fixing hole 12. One end of the first spring 10 is fixedly connected to the inside of the transverse groove 7, and the other end of the first spring 10 is fixedly connected to the side wall of the limiting block 9. Reference Figures 4-5The connecting assembly includes a nozzle 16. A mounting frame 15 is fixedly connected to the side wall of the spray gun 14. The mounting frame 15 provides installation positioning for the nozzle 16, thereby ensuring the docking of the nozzle 16 and the spray gun 14. The side wall of the nozzle 16 is slidably connected inside the mounting frame 15. A connecting hole 17 is provided inside the nozzle 16, which is used to cooperate with a fixing block 19 to fix the nozzle 16 inside the mounting frame 15. A sleeve 18 is fixedly connected inside the mounting frame 15, and a fixing block 19 is slidably connected inside the sleeve 18. The side wall of the fixing block 19 is slidably connected inside the connecting hole 17 to fix the nozzle. A second spring 20 is fixedly connected to the side wall of block 19. The second spring 20 provides elastic force to the fixed block 19, so that the fixed block 19 can be inserted into the connection hole 17. The side wall of the second spring 20 is fixedly connected to the inside of the sleeve 18. A neodymium iron boron strong magnet 21 is fixedly connected inside the mounting frame 15. A neodymium iron boron strong magnet 22 is fixedly connected to the side wall of the nozzle 16. The neodymium iron boron strong magnet 21 and the neodymium iron boron strong magnet 22 attract each other, thereby assisting in fixing the nozzle 16, enhancing the stability of the connection, and facilitating quick positioning during installation.

[0017] Working principle: When installing the filter frame 11, slide the filter frame 11 into the fixed tube 4. During the process, the filter frame 11 squeezes the locking block 8, causing the locking block 8 to drive the limiting block 9 to slide in the transverse groove 7 and compress the first spring 10. When the filter frame 11 moves to the fixed hole 12 and aligns with the locking block 8, the first spring 10 resets and pushes the limiting block 9 and the locking block 8 to move. The locking block 8 slides into the fixed hole 12 to fix the filter frame 11. At this time, the sealing gasket 13 is in close contact with the inner wall of the fixed tube 4. During spraying, the spraying device body 2 provides power to transport the polyurethane paint to the fixed tube 4. After the paint is filtered by the filter material in the filter frame 11, it enters the spray gun 14 through the connecting pipe 5 and the conveying pipe 6 in sequence. The controller 3 adjusts the operating parameters of the spraying device body 2 to control the paint conveying status. When installing the nozzle 16, slide the nozzle 16 into the mounting frame 15. The neodymium iron boron strong magnet 21 and the neodymium iron boron strong magnet 22 attract each other to achieve initial positioning. At the same time, the nozzle 16 presses against the fixing block 19, causing it to slide within the sleeve 18 and compress the second spring 20. When the nozzle 16 moves to the connection hole 17 and aligns with the fixing block 19, the second spring 20 resets and pushes the fixing block 19 into the connection hole 17, thus fixing the nozzle 16. When removing the nozzle 16, apply external force to make the nozzle 16 overcome the attraction force of the neodymium iron boron strong magnet 21 and the neodymium iron boron strong magnet 22 and press against the fixing block 19. The fixing block 19 compresses the second spring 20 and disengages from the connection hole 17, allowing the nozzle 16 to slide out of the mounting frame 15.

[0018] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A polyurethane paint spraying apparatus comprising a trolley (1), characterised in that: The trolley (1) is provided with a spraying device body (2) on its side wall. The spraying device body (2) is provided with a controller (3) on its side wall. A fixing pipe (4) is fixedly connected to the upper surface of the spraying device body (2). A filter assembly is provided inside the fixing pipe (4). A spray gun (14) is provided on the side wall of the spraying device body (2). A connecting assembly is provided on the side wall of the spray gun (14). The filter assembly includes a filter frame (11), the side wall of the filter frame (11) is slidably connected to the inside of the fixed tube (4), the filter frame (11) has a fixed hole (12) inside, the filter frame (11) has a sealing gasket (13) fixedly connected to both sides, the side wall of the fixed tube (4) is threadedly connected to a connecting tube (5), the side wall of the connecting tube (5) is fixedly connected to a conveying tube (6), the inside of the fixed tube (4) has a transverse groove (7), the inside of the fixed tube (4) has a locking block (8), the side wall of the locking block (8) is fixedly connected to a limiting block (9), the side wall of the limiting block (9) is slidably connected to the inside of the transverse groove (7), and the inside of the fixed tube (4) has a first spring (10).

2. A polyurethane paint spraying device according to claim 1, characterised in that: The connecting assembly includes a nozzle (16), and a mounting frame (15) is fixedly connected to the side wall of the spray gun (14). The side wall of the nozzle (16) is slidably connected inside the mounting frame (15).

3. A polyurethane paint spraying device according to claim 2, characterised in that: The nozzle (16) has a connection hole (17) inside, and a sleeve (18) is fixedly connected inside the mounting frame (15).

4. A polyurethane paint spraying device according to claim 3, wherein: The sleeve (18) is slidably connected to a fixing block (19), and the side wall of the fixing block (19) is slidably connected to the connection hole (17).

5. A polyurethane paint spraying device according to claim 4, characterised in that: The side wall of the fixing block (19) is fixedly connected to a second spring (20), and the side wall of the second spring (20) is fixedly connected inside the sleeve (18).

6. A polyurethane paint spraying device according to claim 5, wherein: The mounting frame (15) is fixedly connected to a neodymium iron boron strong magnet one (21), and the nozzle (16) is fixedly connected to a neodymium iron boron strong magnet two (22). The neodymium iron boron strong magnet one (21) and the neodymium iron boron strong magnet two (22) are attracted to each other.

7. A polyurethane paint spraying device as claimed in claim 1, wherein: The side wall of the feed pipe (6) is fixedly connected to the side wall of the spray gun (14), and the side wall of the clamp (8) is slidably connected to the transverse groove (7) and the fixing hole (12).

8. A polyurethane paint spraying device as claimed in claim 1, wherein: One end of the first spring (10) is fixedly connected inside the transverse groove (7), and the other end of the first spring (10) is fixedly connected to the side wall of the limiting block (9).

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