Epoxy powder spraying assembly

Abstract

The utility model discloses an epoxy powder spraying assembly, and particularly relates to the technical field of epoxy powder, the epoxy powder spraying assembly comprises a mounting table, an electrostatic generator is arranged at the top of the mounting table, a spray head support is arranged on one side of the mounting table, a powder pump is arranged on the other side of the mounting table, and a powder concentration container is arranged on one side of the spray head support. A plurality of spray guns are connected to one side of the powder concentrating container, three pipeline connectors are arranged on the side, away from the spray guns, of the powder concentrating container, the end of each pipeline connector is connected with a connecting pipe, and a feeding port of the booster pump is connected with a conveying pipeline. The pressurizing structure pressurizes the powder conveyed by the powder pump again through the pressurizing pump, the flowing speed of the powder is increased, the powder is conveyed into the powder concentration container in a high-pressure mode, the powder can be sprayed out of the multiple spray guns at high pressure, the number of pipelines is reduced, and the work site is optimized.

Description

Technical Field

[0001] This utility model relates to the field of epoxy powder coating technology, and specifically to an epoxy powder coating component. Background Technology

[0002] Epoxy powder is a thermosetting, non-toxic coating. Epoxy resin is one of the main components of epoxy powder. After optimization, it forms a high molecular weight cross-linked structure coating with excellent chemical anti-corrosion properties. When sprayed on the surface of a workpiece, it can effectively protect metal and non-metal surfaces from corrosion by chemicals and climatic factors.

[0003] Existing epoxy powder coating methods all employ electrostatic spraying. The principle of electrostatic spraying is that a high-voltage negative charge is connected to the metal guide cup on the spray gun head, while the workpiece being coated is grounded to form a positive electrode. A strong electrostatic field is formed between the spray gun and the workpiece. The powder is charged by the electrostatic spray gun, usually negatively charged, but it can also be positively charged. Following the natural principle of like charges repelling and opposite charges attracting, the charged powder particles move towards the workpiece with the opposite polarity under the influence of the electrostatic field and deposit on its surface. Existing electrostatic spraying equipment mainly includes single-nozzle spraying equipment and multi-nozzle combination spraying equipment. Multi-nozzle combination spraying equipment is mainly used for epoxy powder coating of large workpiece surfaces because it is efficient. However, each nozzle requires a separate powder delivery pipe, resulting in the same number of powder delivery pipes as the nozzles being installed at the nozzle installation location of the multi-nozzle combination spraying equipment. This leads to numerous and messy powder delivery pipes on site, which is not conducive to sorting and fixing. Utility Model Content

[0004] The purpose of this invention is to provide an epoxy powder coating assembly to address the aforementioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An epoxy powder coating assembly includes a mounting platform with an electrostatic generator placed on top. A nozzle support is located on one side of the mounting platform, and a powder pump is located on the other side. A powder collection container is located on one side of the nozzle support, and multiple spray guns are connected to one side of the powder collection container. Three pipe joints are located on the side away from the spray guns. Each pipe joint has a connecting pipe at its end, and each connecting pipe has a discharge box at its end. The discharge box is connected to a booster pump, and a conveying pipe is connected to the inlet of the booster pump. The conveying pipe is connected to the powder pump.

[0007] Preferably, the tail end of the spray gun is provided with a feed pipe, the outer wall of the feed pipe is provided with external threads, and the powder collection container is provided with an insertion hole that matches the feed pipe on the side near the nozzle support.

[0008] Preferably, a second screw hole is provided on the side of the powder collection container away from the nozzle bracket, and a fastening tube is provided in the second screw hole. The extended end of the fastening tube is inserted into the powder collection container and threadedly connected to the end of the feed pipe.

[0009] Preferably, sealing gaskets are provided on the outer wall of the feed pipe and the end of the fastening pipe.

[0010] Preferably, the outer wall of the nozzle bracket is provided with a plurality of placement slots, the body of the spray gun can be placed in the placement slots, the outer wall of the nozzle bracket is provided with a first screw hole, and a limit plate is also connected to one side of the placement slot by bolts.

[0011] Preferably, a powder supply tank is placed on one side of the powder pump, and the powder pump and the powder supply tank are connected by a pipeline.

[0012] Preferably, the mounting platform is provided with a support rod and a support base on the side near the nozzle bracket, the extension end of the support rod is connected to the nozzle bracket, and the booster pump is placed on top of the support base.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] By setting up a powder collection container and a pressurizing structure connected to the powder collection container, the pressurizing structure mainly uses a booster pump to pressurize the powder pumped by the powder pump again, so as to increase the flow rate of the powder and deliver the powder to the powder collection container in a high-pressure form. This is beneficial for the powder to be sprayed out from multiple spray guns at high pressure at the same time, which helps to reduce pipelines, optimize the work site, and eliminate the problem of many pipelines distributed at the spraying site, thus avoiding the problem of pipeline entanglement and mixing. This is also beneficial for staff to manage or maintain the spraying components. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the nozzle bracket, booster pump, powder collection container, and mounting platform of this utility model.

[0018] Figure 3 This is a schematic diagram of the booster pump, discharge box, and connecting pipe of this utility model;

[0019] Figure 4 This is a schematic diagram of the nozzle support, powder collection container, and spray gun of this utility model.

[0020] Figure 5 for Figure 4 Enlarged view of section A in the middle;

[0021] Figure 6 This is an exploded view of the nozzle support, powder collection container, and spray gun of this utility model;

[0022] Figure 7 This is a schematic diagram of the spray gun and fastening tube of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Nozzle bracket; 2. Electrostatic generator; 3. Mounting platform; 4. Powder pump; 5. Powder supply hopper; 6. Support rod; 7. Support platform; 8. Booster pump; 9. Conveying pipeline; 10. Connecting pipe; 11. Powder collection container; 12. Spray gun; 13. Discharge box; 14. Pipe joint; 15. Placement slot; 16. Limiting plate; 17. First screw hole; 18. Fastening pipe; 19. Second screw hole; 20. Sealing gasket; 21. Feed pipe. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figure 1 - Figure 7 An epoxy powder coating assembly is shown, including a mounting platform 3. An electrostatic generator 2 is placed on the top of the mounting platform 3. A nozzle bracket 1 is provided on one side of the mounting platform 3, and a powder pump 4 is provided on the other side. A powder collection container 11 is provided on one side of the nozzle bracket 1. Multiple spray guns 12 are connected to one side of the powder collection container 11. Three pipe joints 14 are provided on the side away from the spray guns 12. Each pipe joint 14 is connected to a connecting pipe 10 at its end. Each connecting pipe 10 is connected to a discharge box 13 at its end. The discharge box 13 is connected to a booster pump 8. The feed inlet of the booster pump 8 is connected to a conveying pipe 9, which is connected to the powder pump 4.

[0027] In this embodiment, the powder pump 4 starts by drawing powder containing epoxy powder through a relatively thick pipe. The powder is transported to the booster pump 8 through the conveying pipe 9. The booster pump 8 is started and transports the powder to the discharge box 13, then to the connecting pipe 10, and finally into the powder collection container 11 through the pipe joint 14, and finally into the spray gun 12. During this process, the electrostatic generator 2 is in a continuous working state. The electrostatic generator 2 releases high voltage static electricity into the space in the direction of the workpiece through the electrode needle at the nozzle of the spray gun 12 (this part is prior art and will not be described in detail here). The high voltage static electricity ionizes the mixture of epoxy powder and compressed air sprayed from the nozzle of the spray gun and the air around the electrode, thereby making the epoxy powder negatively charged.

[0028] like Figure 1 - Figure 7 As shown, the tail end of the spray gun 12 is provided with a feed pipe 21, and the outer wall of the feed pipe 21 is provided with external threads (not shown in the figure). The powder collection container 11 is provided with an insertion hole (not shown in the figure) that mates with the feed pipe 21 on the side near the nozzle support 1. The powder collection container 11 is provided with a second screw hole 19 on the side away from the nozzle support 1. A fastening tube 18 is provided in the second screw hole 19. The extension end of the fastening tube 18 is inserted into the powder collection container 11 and threadedly connected to the end of the feed pipe 21. Sealing gaskets 20 are provided on the outer wall of the feed pipe 21 and the end of the fastening tube 18. The fastening tube 18 is a hollow structure. A through hole is provided on the outer wall of the fastening tube 18. During the powder conveying process, after the powder collection container 11 is filled with powder, the powder enters the fastening tube 18 through the hole on the outer wall of the fastening tube 18, then enters the feed pipe 21, and finally enters the spray gun 12.

[0029] During the installation of the spray gun 12, first insert the feed tube 21 at the tail end of the spray gun 12 into the aforementioned insertion hole, then screw the fastening tube 18 into the second screw hole 19, and thread the fastening tube 18 to the end of the feed tube 21. Use the fastening tube 18 to fasten the feed tube 21 to the powder collection container 11. At this time, the body of the spray gun 12 is located in the placement groove 15.

[0030] After the spray gun 12 is installed, the sealing gasket 20 on the outer wall of the feed pipe 21 is pressed tightly against the outer wall of the powder collection container 11 by the feed pipe 21, sealing the insertion hole. The sealing gasket 20 at the end of the fastening pipe 18 is also pressed tightly against the outer wall of the powder collection container 11, sealing the second screw hole 19.

[0031] like Figure 4 - Figure 6 As shown, the outer wall of the nozzle bracket 1 has several placement slots 15, in which the body of the spray gun 12 can be placed. The outer wall of the nozzle bracket 1 has a first screw hole 17, and a limit plate 16 is bolted to one side of the placement slot 15.

[0032] The placement groove 15 limits the gun body of the spray gun 12 to ensure that the spray gun 12 will not shift during the spraying of epoxy powder. Through holes are provided at both ends of the limiting plate 16. The through holes at both ends of the limiting plate 16 are aligned with the first screw hole 17 on the outer wall of the nozzle bracket 1, and then connected and tightened with bolts. The limiting plate 16 presses down on the gun body to improve the overall stability of the spray gun 12.

[0033] like Figure 1 As shown, a powder supply tank 5 is placed on one side of the powder pump 4, and the powder pump 4 and the powder supply tank 5 are connected by a pipe.

[0034] Before epoxy powder can be used for spraying, the epoxy powder material usually needs to be treated.

[0035] Specifically: Based on the characteristics of epoxy powder and the requirements of electrostatic spraying process, appropriate fluidization aids, such as fumed silica and alumina, are added. These aids can improve the fluidization performance of the powder, enabling the powder to be uniformly fluidized in the powder supply tank 5, thereby improving the stability and consistency of the spraying.

[0036] In order for epoxy powder to be better adsorbed onto the workpiece surface during electrostatic spraying, an appropriate amount of charge modifier needs to be added. The type and amount of charge modifier need to be selected and adjusted according to factors such as the specific composition of the epoxy powder and the material of the workpiece to ensure that the powder can carry the appropriate amount of charge and polarity.

[0037] like Figure 1 As shown, a support rod 6 and a support platform 7 are provided on the side of the mounting platform 3 near the nozzle bracket 1. The extended end of the support rod 6 is connected to the nozzle bracket 1, and the booster pump 8 is placed on the top of the support platform 7. During the process of spraying epoxy powder by the spray gun 12, the spray gun 12 is under pressure, and the nozzle bracket 1 is also subjected to a corresponding force. The support rod 6 supports the nozzle bracket 1 to maintain its stability, and the support platform 7 provides stable support for the booster pump 8, which can reduce the noise generated by the booster pump 8 due to vibration.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An epoxy powder spraying assembly comprising a mounting table (3), the top of which is placed with an electrostatic generator (2), one side of which is provided with a spray head support (1), and the other side is provided with a powder pump (4), characterized in that: The side of the spray head support (1) is provided with a powder collecting container (11), the side of the powder collecting container (11) is connected with a plurality of spray guns (12), the side away from the spray guns (12) is provided with three pipe joints (14), the end of each pipe joint (14) is connected with a connecting pipe (10), the end of each connecting pipe (10) is connected with a discharge box (13), the discharge box (13) is connected with a booster pump (8), the feed inlet of the booster pump (8) is connected with a conveying pipe (9), and the conveying pipe (9) is connected with a powder pump (4).

2. An epoxy powder spray assembly according to claim 1, wherein: The tail end of the spray gun (12) is provided with a feed pipe (21), the outer wall of the feed pipe (21) is provided with external threads, and the side close to the spray head support (1) of the powder collecting container (11) is provided with a insertion hole matched with the feed pipe (21).

3. An epoxy powder spray assembly according to claim 2, wherein: The side away from the spray head support (1) of the powder collecting container (11) is provided with a second screw hole (19), the second screw hole (19) is provided with a fastening pipe (18), the extension end of the fastening pipe (18) is inserted into the powder collecting container (11) and is threadedly connected with the end of the feed pipe (21), the fastening pipe (18) is a hollow structure, and the outer wall of the fastening pipe (18) is provided with a through hole.

4. An epoxy powder spray assembly as defined in claim 2, wherein: The outer wall of the feed pipe (21) and the end of the fastening pipe (18) are both provided with sealing washers (20).

5. An epoxy powder spray assembly as defined in claim 1, wherein: The outer wall of the spray head support (1) is provided with a plurality of placing grooves (15), the gun body of the spray gun (12) can be placed in the placing groove (15), the outer wall of the spray head support (1) is provided with a first screw hole (17), and the side of the placing groove (15) is further connected with a limiting plate (16) through a bolt.

6. An epoxy powder spray assembly as defined in claim 1, wherein: The side of the powder pump (4) is placed with a powder supply barrel (5), and the powder pump (4) and the powder supply barrel (5) are connected through a pipe.

7. An epoxy powder spray assembly as defined in claim 1, wherein: The side close to the spray head support (1) of the mounting table (3) is provided with a supporting rod (6) and a supporting table (7), the extension end of the supporting rod (6) is connected with the spray head support (1), and the booster pump (8) is placed on the top of the supporting table (7).

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