Filtering device of double-fluid spray gun

Abstract

The utility model discloses a filtering device of a double-fluid spray gun, which belongs to the technical field of spray gun bodies and comprises a spray gun body with a double-fluid spraying function. Through a conical filter screen in the filter piece and a groove in the edge of the conical filter screen, when paint enters the shell, the paint can be filtered through the conical filter screen, and meanwhile particles in the paint can circulate to the periphery through a conical part and fall into the groove to be collected; the problem that the paint spraying quality is affected due to the fact that paint and particles are mixed and discharged can be effectively prevented; through the guide pipe in the driving piece and the driving ring internally provided with the blades, when paint enters the connecting shell initially, the paint can be guided to the surfaces of the blades in the driving ring through the guide pipe arranged in a bent mode, then the blades are extruded through liquid, and the driving ring rotates in the guide rail; and the rotating driving ring can throw the paint out downwards, so that the effect of uniformly mixing the paint and dispersing and falling is achieved.

Description

Technical Field

[0001] This utility model relates to the field of spray gun body technology, specifically to a filtration device for a dual-fluid spray gun. Background Technology

[0002] A spray gun body is a device that uses the rapid release of liquid or compressed air as its power source. Spray gun bodies are divided into two types: standard pressure and pressurized. There are also pressure spray gun bodies, cascade spray gun bodies, and automatic recovery spray gun bodies.

[0003] A search revealed Chinese patent "A Spray Gun Body" (authorization announcement number CN221016864U). This utility model provides a spray gun body for spraying lacquer, comprising: a gun shell; a spray bottle located at the top of the gun shell, the spray bottle being used to hold lacquer liquid, and a micro-stirring device located at one end of the spray bottle near the gun shell for stirring the lacquer liquid to ensure thorough mixing; a nozzle located at the front end of the gun shell, the nozzle communicating with the spray bottle; and a filter device located between the spray bottle and the nozzle for filtering particulate matter in the lacquer liquid. This utility model enables direct spraying of lacquer using the spray gun body, is easy to operate, fills the technological gap in current lacquer processing methods that cannot achieve spraying, and also helps improve the quality of the lacquer coating.

[0004] Although the spray gun body is equipped with a filter mechanism in its paint can, the paint is constantly being transported, so the particles accumulate on the surface of the filter device and gradually increase. Over time, this can easily affect the flow efficiency of the paint. At the same time, since the paint generally contains solvents and acidic substances, prolonged flow on the surface of the stirring device in the spray gun body can easily corrode the metal material therein, leading to damage to the stirring device and making it unable to continue stirring the paint and maintain its uniformity.

[0005] Based on this, the present invention designs a filtration device for a dual-fluid spray gun to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a filtration device for a dual-fluid spray gun.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A filtering device for a dual-fluid spray gun includes: a spray gun body with dual-fluid spraying function, wherein a feed inlet is provided on one side of the spray gun body;

[0009] The filter assembly is located at the feed inlet of the spray gun body and can uniformly stir the paint and filter out particles. The filter assembly mainly consists of a filter element and a drive element.

[0010] Furthermore, the filter element includes a housing connected to the feed inlet of the spray gun body, and the surface of the housing is provided with a threaded ring;

[0011] Furthermore, the filter element also includes a filter screen disposed in the housing, the edge of the filter screen having a groove, and the surface of the filter screen being fixedly connected to the inner wall of the housing;

[0012] Furthermore, the filter screen has a conical shape when viewed from the front, and the lower part of the conical portion of the filter screen is at the same level as the height of the groove;

[0013] Furthermore, the driving component includes a connecting shell disposed above the outer shell, a material pipe connected to the inlet of the connecting shell, a guide rail fixedly connected in the connecting shell, and a driving ring with built-in blades disposed in the guide rail.

[0014] Furthermore, a limiting ring is fixedly connected to the surface of the drive ring, and the limiting ring is slidably connected to the inner wall of the guide rail;

[0015] Furthermore, a guide shell is provided on the upper inner side of the connecting shell, and a guide tube is connected to the lower part of the guide shell;

[0016] Furthermore, the guide shell and the connecting shell are integrally connected, and the guide shell is arranged in an inverted cone shape;

[0017] Furthermore, the guide tube has a curved design, and eight guide tubes are arranged in a ring array. The upper end of the guide tube is connected to the guide shell, and the lower end angle of the guide tube corresponds to the fan blade in the drive ring.

[0018] Furthermore, a threaded groove is provided on the upper surface of the connecting shell, and the threaded groove of the connecting shell is adapted to the threaded ring.

[0019] Beneficial effects

[0020] 1. Through the conical filter screen and the grooves on its sides in the filter element, when the paint enters the housing, the conical filter screen can filter the paint. At the same time, the paint particles can flow to the surrounding area through the conical part and fall into the groove for collection. This can effectively prevent the paint and particles from mixing and being discharged, thus affecting the painting quality.

[0021] 2. Through the guide tube in the drive unit and the drive ring with built-in blades, when the paint initially enters the connecting shell, the guide tube with its curved design can guide the paint to the surface of the blades in the drive ring. Then, the liquid squeezes the blades to make the drive ring rotate in the guide rail. In this way, the rotating drive ring can throw the paint downwards, achieving the effect of uniformly mixing and dispersing the paint as it falls. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A three-dimensional view of the main structure of a dual-fluid spray gun filtration device;

[0024] Figure 2 A plan view of the structure of the filter assembly in a dual-fluid spray gun filtration device;

[0025] Figure 3 This is a three-dimensional structural view of the filter element in a dual-fluid spray gun filtration device;

[0026] Figure 4 A three-dimensional view showing the disassembled structure of the drive ring and guide rail in a dual-fluid spray gun filtration device;

[0027] Figure 5 A three-dimensional structural view of the guide shell and guide tube in a dual-fluid spray gun filtration device;

[0028] The labels in the diagram represent:

[0029] 1. Spray gun body; 2. Filter assembly; 21. Filter element; 211. Housing; 212. Threaded ring; 213. Groove; 214. Filter screen; 22. Drive component; 221. Connecting shell; 222. Guide rail; 223. Limiting ring; 224. Drive ring; 225. Guide shell; 226. Guide tube. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] The present invention will be further described below with reference to the embodiments.

[0032] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-5 A filtering device for a dual-fluid spray gun includes: a feed inlet is provided on one side of the spray gun body 1;

[0033] The filter assembly 2 is located at the feed inlet of the spray gun body 1 and can uniformly stir the paint and filter out particles. The filter assembly 2 is mainly composed of filter element 21 and other components.

[0034] When performing high-quality spray painting operations, such as automotive painting, furniture coating, or industrial equipment spraying, dual-fluid spray gun body 1 is usually used. Because dual-fluid spray gun body 1 can provide a finer atomization effect, reduce paint waste, and ensure uniform coating, it has become an indispensable tool in these spray painting operations that require precise control of coating thickness and surface smoothness.

[0035] In actual use, the personnel will pre-mix and stir the paint in the paint bucket. However, due to climate reasons, when the weather is cold, a film will form on the surface of the paint. Although stirring can remove the film, the film may break and disperse into small particles and mix into the paint. When the paint enters the paint canister of the spray gun body 1, it can easily cause blockage of the filter structure in the paint canister.

[0036] In this embodiment of the present invention, the filter element 21 includes a housing 211 connected to the feed inlet of the spray gun body 1, and a threaded ring 212 is provided on the surface of the housing 211; the filter element 21 also includes a filter screen 214 disposed in the housing 211, and a groove 213 is provided on the edge of the filter screen 214, and the surface of the filter screen 214 is fixedly connected to the inner wall of the housing 211; through the filter screen 214 and the groove 213 in the filter element 21, when the paint enters the housing 211, the paint can be filtered by the conical filter screen 214, and at the same time, the particles in the paint can flow to the surroundings through the conical part and fall into the groove 213 for collection, which can effectively prevent the problem of paint and particles mixing and being discharged, thus affecting the painting quality;

[0037] In this embodiment of the utility model, the filter screen 214 has a conical shape when viewed from the front, and the lower part of the conical part of the filter screen 214 is at the same level as the groove 213. Through the above design, the paint particles in contact with the filter screen 214 can be dispersed to the periphery to prevent them from clogging in the middle of the filter screen 214 and affecting the subsequent flow of paint. At the same time, it can also play a guiding and collecting role.

[0038] In some embodiments, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in a preferred embodiment of the present invention, the driving component 22 includes a connecting shell 221 disposed above the outer shell 211. A material pipe is connected to the inlet of the connecting shell 221. A guide rail 222 is fixedly connected in the connecting shell 221. A driving ring 224 with built-in blades is disposed in the guide rail 222. Through the guide tube 226 in the driving component 22 and the driving ring 224 with built-in blades, when the paint initially enters the connecting shell 221, the guide tube 226, which is bent, can guide the paint to the surface of the blades in the driving ring 224. Then, the blades are squeezed by liquid to make the driving ring 224 rotate in the guide rail 222. In this way, the rotating driving ring 224 can throw the paint downwards, achieving the effect of uniformly mixing and dispersing the paint as it falls.

[0039] In this embodiment of the invention, a limiting ring 223 is fixedly connected to the surface of the drive ring 224, and the limiting ring 223 is slidably connected to the inner wall of the guide rail 222; the limiting ring 223 can horizontally limit the drive ring 224 when it is squeezed and rotates.

[0040] In this embodiment of the utility model, a guide shell 225 is provided on the upper inner side of the connecting shell 221, and a guide tube 226 is connected to the lower side of the guide shell 225. Through the guide shell 225, the paint can be guided and gathered to ensure that the paint can completely enter the guide tube 226.

[0041] In this embodiment of the utility model, the guide shell 225 and the connecting shell 221 are integrally connected, and the guide shell 225 is arranged in an inverted cone shape;

[0042] In this embodiment of the utility model, the guide tube 226 is designed in a curved shape, and eight guide tubes 226 are arranged in a ring array. The upper end of the guide tube 226 is connected to the guide shell 225, and the lower end angle of the guide tube 226 corresponds to the fan blade in the drive ring 224. Through the above design, the paint can be guided to the surface of the blade of the drive ring 224, and the paint can squeeze the blade to make the drive ring 224 rotate, so as to achieve the effect of evenly throwing out the paint.

[0043] In this embodiment of the utility model, a threaded groove is provided on the upper surface of the connecting shell 221. The threaded groove of the connecting shell 221 is adapted to the threaded ring 212. Through the above design, the connecting shell 221 and the outer shell 211 can be separated after the worker finishes the painting operation, and the impurity particles in the groove 213 on the side of the filter screen 214 can be collected. At the same time, it is also convenient for the worker to maintain the interior of the outer shell 211 and the connecting shell 221.

[0044] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A filtering device for a dual-fluid spray gun, comprising: A spray gun body (1) with dual-fluid jet function is characterized in that: a feed port is provided on one side of the spray gun body (1); The filter assembly (2) is located at the feed inlet of the spray gun body (1) and can uniformly stir the paint and filter out particles. The filter assembly (2) is mainly composed of a filter element (21) and a drive element (22).

2. The filtering device for a dual-fluid spray gun according to claim 1, characterized in that, The filter element (21) includes a housing (211) connected to the feed inlet of the spray gun body (1), and the surface of the housing (211) is provided with a threaded ring (212).

3. The filtering device for a dual-fluid spray gun according to claim 2, characterized in that, The filter element (21) also includes a filter screen (214) disposed in the outer shell (211), the edge of the filter screen (214) is provided with a groove (213), and the surface of the filter screen (214) is fixedly connected to the inner wall of the outer shell (211).

4. The filtering device for a dual-fluid spray gun according to claim 3, characterized in that, The filter (214) has a conical shape when viewed from the front, and the lower part of the conical portion of the filter (214) is at the same level as the groove (213).

5. The filtering device for a dual-fluid spray gun according to claim 1, characterized in that, The drive unit (22) includes a connecting shell (221) disposed above the outer shell (211), a material pipe is connected to the inlet of the connecting shell (221), a guide rail (222) is fixedly connected in the connecting shell (221), and a drive ring (224) with built-in blades is disposed in the guide rail (222).

6. The filtering device for a dual-fluid spray gun according to claim 5, characterized in that, A limiting ring (223) is fixedly connected to the surface of the drive ring (224), and the limiting ring (223) is slidably connected to the inner wall of the guide rail (222).

7. The filtering device for a dual-fluid spray gun according to claim 5, characterized in that, A guide shell (225) is provided on the upper inner side of the connecting shell (221), and a guide tube (226) is connected to the lower side of the guide shell (225).

8. The filtering device for a dual-fluid spray gun according to claim 7, characterized in that, The guide shell (225) and the connecting shell (221) are integrally connected, and the guide shell (225) is arranged in an inverted cone shape.

9. The filtering device for a dual-fluid spray gun according to claim 7, characterized in that, The guide tube (226) has a curved design and eight guide tubes (226) are arranged in a ring array. The upper end of the guide tube (226) is connected to the guide shell (225), and the lower end angle of the guide tube (226) corresponds to the fan blade in the drive ring (224).

10. The filtering device for a dual-fluid spray gun according to claim 5, characterized in that, A threaded groove is provided on the upper surface of the connecting shell (221), and the threaded groove of the connecting shell (221) is adapted to the threaded ring (212).

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