Self-cleaning spray head of double-fluid spray gun

Abstract

The utility model discloses a self-cleaning spray head of a double-fluid spray gun, which belongs to the technical field of double-fluid spray guns and comprises a gun barrel, one end of the gun barrel is in threaded connection with a spray head main body and a cleaning mechanism, the cleaning mechanism is arranged on the inner wall of the spray head main body, and one end of the inner wall of the spray head main body is in sliding connection with a push ring. One end of the push ring is fixedly connected with a plurality of cleaning brushes which are evenly distributed, one end of each cleaning brush is fixedly connected with a cleaning block, and cleaning assemblies are arranged on the outer wall of the gun barrel and the outer wall of the spray head body. By means of the mode, compressed air extrudes the push ring to drive the cleaning brush and the cleaning block to clean the spray head, the cleaning block has certain flexibility, the size of the cleaning block is slightly larger than that of the spray hole, impurities in the spray hole can be extruded out, the cleaning block is matched with the cleaning brush to clean the impurities, and the push ring enables the cleaning brush to return to the original position through the compression spring. When the double-fluid spray gun is used, the spray head can be self-cleaned, and the using effect of the double-fluid spray gun is improved.

Description

Technical Field

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

[0002] Two-fluid spray guns primarily rely on compressed air supplied by an air compressor to atomize the liquid. Typically, there are three stages of atomization, though the principles may vary depending on the design and the company. Flow rates generally range from 2 liters / minute to 80 liters / minute. To improve the coating effect, the two-fluid nozzles need to be self-cleaned.

[0003] Currently, a Chinese patent discloses a dual-fluid micro-mist spray gun (authorization announcement number CN217911151U). The nozzle body is detached from the gun barrel body, the side ears are flipped upwards, and the push ring is pressed firmly. A pin is then used to unclog the nozzle holes. After unclogging, the steps are reversed to reconnect the gun barrel body to the nozzle body. This dual-fluid micro-mist spray gun, through the setting of a locking component, can lock the unclogging component, ensuring it remains stably in a certain position when not unclogging. This effectively prevents the return spring from being stretched by water pressure each time it is used, thus preventing a decrease in the spring's elasticity.

[0004] According to the aforementioned reference materials, in the above-mentioned device, the rotating nozzle body is detached from the gun barrel body. By pressing the push ring, the pin can be moved to one end to clean the nozzle holes on the nozzle body. Then, the push ring is returned to its original position by the reset spring. The position of the push ring can be limited and fixed by the side lug. However, when cleaning the spray gun, the cleaning effect of squeezing out the impurities by inserting the pin into the nozzle is not ideal. Impurities will still remain in the nozzle holes, making it inconvenient to effectively clean the nozzle of the dual-fluid spray gun and reducing the effectiveness of the device.

[0005] Based on this, the present invention designs a self-cleaning nozzle 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 self-cleaning nozzle for a dual-fluid spray gun.

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

[0008] A self-cleaning nozzle for a dual-fluid spray gun includes a gun barrel, one end of which is threadedly connected to a nozzle body.

[0009] Furthermore, a cleaning mechanism is provided on the inner wall of the nozzle body. A push ring is slidably connected to one end of the inner wall of the nozzle body, and several evenly distributed cleaning brushes are fixedly connected to one end of the push ring. A cleaning block is fixedly connected to one end of each cleaning brush. Cleaning components are provided on both the gun barrel and the outer wall of the nozzle body.

[0010] Furthermore, the cleaning mechanism includes a protective sleeve fixedly connected between one end of the push ring and the inner wall of the nozzle body. The inner wall of the protective sleeve is provided with a compression spring, and the two ends of the compression spring are fixedly connected to one end of the push ring and the inner wall of the nozzle body, respectively.

[0011] Furthermore, guide rods are fixedly connected to both sides of the inner wall of the nozzle body, and the push ring is slidably connected to the two guide rods.

[0012] Furthermore, a baffle is fixedly connected to the end of the push ring away from the cleaning brush.

[0013] Furthermore, one end of the push ring is provided with several evenly distributed through holes.

[0014] Furthermore, both sides of the outer wall of the nozzle body are slidably connected with limit rods, one end of which passes through the nozzle body and extends to both sides of the push ring.

[0015] Furthermore, a pull ring is fixedly connected to the other end of the limiting rod.

[0016] Furthermore, the cleaning assembly includes a mounting ring fixedly connected to one end of the outer wall of the gun barrel, and liquid reservoirs are installed on both sides of the mounting ring.

[0017] Furthermore, one end of the delivery pipe at the bottom of the liquid storage cylinder is rotatably threaded with a fixing sleeve.

[0018] Furthermore, both sides of the nozzle body are connected to conduits, and the liquid storage cylinder is threadedly connected to one end of the conduit via a fixing sleeve.

[0019] Beneficial effects

[0020] 1. When using the dual-fluid spray gun, compressed gas compresses the push ring, causing it to drive the cleaning brush and cleaning block to clean the nozzle. The cleaning brush is aligned with the nozzle orifice on the nozzle. The cleaning block has a certain degree of flexibility and is slightly larger than the nozzle, allowing it to squeeze out impurities from the nozzle. In conjunction with the cleaning brush, it sweeps away impurities. The push ring can return the cleaning brush to its original position via a compression spring inside the protective sleeve. The protective sleeve protects the compression spring. The guide rod guides the movement direction of the push ring. The push ring, in conjunction with the baffle, allows compressed air to push the push ring. The through hole guides and delivers compressed air, preventing excessive air pressure on the push ring. The limit rod limits and fixes the push ring. When using the dual-fluid spray gun, it can self-clean the nozzle, improving the spray gun's performance.

[0021] 2. When cleaning the nozzle of the dual-fluid spray gun, the mounting ring on the outer wall of the gun barrel can be used to install two liquid reservoirs. The liquid reservoirs are filled with neutral detergent, which can clean the impurities adhering to the nozzle. The liquid reservoirs are connected to the tubes on both sides of the nozzle body through the bottom fixed sleeve, which delivers the neutral detergent into the nozzle. Together with the cleaning brush and cleaning block, it can clean the impurities in the nozzle, thereby improving the cleaning effect of the dual-fluid spray gun nozzle. 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 This is a three-dimensional view of the main structure of the self-cleaning nozzle of a dual-fluid spray gun according to the present invention.

[0024] Figure 2 This is a perspective view of the cleaning mechanism structure in the self-cleaning nozzle of a dual-fluid spray gun according to this utility model;

[0025] Figure 3 This is a three-dimensional half-sectional view of the cleaning mechanism structure in the self-cleaning nozzle of a dual-fluid spray gun according to the present invention.

[0026] Figure 4 This is a perspective view of the cleaning component structure in the self-cleaning nozzle body of a dual-fluid spray gun according to this utility model.

[0027] The labels in the diagram represent:

[0028] 1. Gun barrel; 2. Nozzle body; 3. Cleaning mechanism; 301. Push ring; 302. Cleaning brush; 303. Cleaning block; 304. Protective sleeve; 305. Compression spring; 306. Guide rod; 307. Baffle; 308. Through hole; 309. Limiting rod; 310. Cleaning assembly; 3101. Mounting ring; 3102. Liquid reservoir; 3103. Fixing sleeve; 3104. Guide tube. Detailed Implementation

[0029] 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.

[0030] The present invention will be further described below with reference to the embodiments.

[0031] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4 A self-cleaning nozzle of a dual-fluid spray gun includes a gun barrel 1, one end of which is threadedly connected to a nozzle body 2, a cleaning mechanism 3, which is disposed on the inner wall of the nozzle body 2, a push ring 301 slidably connected to one end of the inner wall of the nozzle body 2, a number of evenly distributed cleaning brushes 302 fixedly connected to one end of the push ring 301, and a cleaning block 303 fixedly connected to one end of the cleaning brushes 302, and cleaning components 310 are provided on the outer walls of both the gun barrel 1 and the nozzle body 2.

[0032] In this embodiment of the invention, the nozzle body 2 is installed at one end of the gun rod 1 via a threaded connection. When the dual-fluid spray gun is used, high-pressure gas enters the dual-fluid spray gun through the air inlet, and liquid enters the dual-fluid spray gun through the liquid inlet. The gas guides the liquid, and the gas and liquid collide, shearing the liquid into fine droplets. The liquid is then sprayed out in the form of tiny droplets or particles, forming an atomization effect. When the compressed gas is sprayed out through the nozzle, it squeezes the push ring 301, causing the push ring 301 to drive the cleaning brush 302 and the cleaning block 303 to move to one end and insert into the spray hole of the nozzle body 2 to clean impurities. This allows the nozzle of the dual-fluid spray gun to self-clean, improving the usage effect of the dual-fluid spray gun.

[0033] In some embodiments, such as Figure 2 and Figure 3As shown, in a preferred embodiment of the present invention, the cleaning mechanism 3 includes a protective sleeve 304 fixedly connected between one end of the push ring 301 and the inner wall of the nozzle body 2. The inner wall of the protective sleeve 304 is provided with a compression spring 305, and the two ends of the compression spring 305 are fixedly connected to one end of the push ring 301 and the inner wall of the nozzle body 2, respectively.

[0034] When compressed gas squeezes the push ring 301, the push ring 301 drives the cleaning brush 302 and the cleaning block 303 to clean the nozzle body 2 while squeezing the compression spring 305. When the compressed gas releases the pressure on the push ring 301, the compression spring 305 supports the push ring 301 with its own elasticity, allowing it to return to its original position. The protective sleeve 304 can reduce the corrosion of the compression spring 305 by liquid, improve the service life of the compression spring 305, facilitate the self-cleaning of the dual-fluid spray gun, and improve the cleaning effect of the device.

[0035] In this embodiment of the utility model, guide rods 306 are fixedly connected to both sides of the inner wall of the nozzle body 2, and the push ring 301 is slidably connected to the two guide rods 306.

[0036] When the push ring 301 drives the cleaning brush 302 and the cleaning block 303 to move to one side, the push ring 301 moves to one end along the outer wall of the two guide rods 306. The two guide rods 306 can improve the stability of the push ring 301 when it moves.

[0037] In this embodiment of the utility model, a baffle 307 is fixedly connected to the end of the push ring 301 away from the cleaning brush 302.

[0038] When the compressed gas comes into contact with the other end of the push ring 301, the other end of the push ring 301 cooperates with the baffle 307 to intercept the compressed gas to a certain extent, so that the compressed gas can push the push ring 301 to one end, and drive the push ring 301 to one end to clean the nozzle body 2.

[0039] In this embodiment of the utility model, a plurality of evenly distributed through holes 308 are provided at one end of the push ring 301.

[0040] When the compressed gas push ring 301 is squeezed, the compressed gas can be guided and delivered to one end through the through hole 308 to prevent the push ring 301 from being subjected to excessive gas pressure, thereby improving the safety of the device.

[0041] In this embodiment of the present invention, both sides of the outer wall of the nozzle body 2 are slidably connected with limiting rods 309, one end of the limiting rod 309 passing through the nozzle body 2 and extending to both sides of the push ring 301.

[0042] When using the push ring 301 to clean the nozzle body 2, first remove the limit rod 309 from the push ring 301 to release the restriction on the push ring 301, so that the push ring 301 can drive the cleaning brush 302 and the cleaning block 303 to one end to clean the nozzle body 2, which can improve the use effect of the dual-fluid spray gun.

[0043] In this embodiment of the utility model, a pull ring is fixedly connected to the other end of the limiting rod 309.

[0044] When removing the limiting rod 309, the limiting rod 309 is moved out of the push ring 301 by manually pulling the pull ring at the other end of the limiting rod 309, so as to facilitate the limiting of the push ring 301.

[0045] In some embodiments, such as Figure 4 As shown, in a preferred embodiment of the present invention, the cleaning component 310 includes a mounting ring 3101 fixedly connected to one end of the outer wall of the gun barrel 1, and liquid storage cylinders 3102 are installed on both sides of the mounting ring 3101.

[0046] The gun barrel 1 can be installed on the liquid storage tank 3102 via the mounting ring 3101. The controller starts the delivery pump to deliver the neutral cleaning agent inside the liquid storage tank 3102 to the conduit 3104, and then delivers the neutral cleaning agent to the nozzle body 2 through the conduit 3104 to clean the impurities inside the nozzle and improve the cleaning effect of the device.

[0047] In this embodiment of the utility model, a fixed sleeve 3103 is rotatably threadedly connected to one end of the bottom conveying pipe of the liquid storage cylinder 3102.

[0048] When the neutral detergent inside the reservoir 3102 is delivered to the nozzle body 2, the reservoir 3102 is threadedly connected to the conduit 3104 through the fixing sleeve 3103 on the bottom delivery pipe, so that the neutral detergent can be delivered into the nozzle to clean the impurities in the nozzle orifice.

[0049] In this embodiment of the utility model, both sides of the nozzle body 2 are connected to conduits 3104, and the liquid storage cylinder 3102 is threadedly connected to one end of the conduit 3104 through a fixing sleeve 3103.

[0050] The liquid storage cylinder 3102 is threadedly connected to the conduit 3104 via the fixing sleeve 3103 on the bottom delivery pipe, so that the cleaning liquid in the liquid storage cylinder 3102 can be delivered to the nozzle body 2, so that the cleaning liquid can clean the impurities in the nozzle body 2 and improve the cleaning effect of the device.

[0051] 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 self-cleaning nozzle for a dual-fluid spray gun, comprising a gun rod (1), one end of which is threadedly connected to a nozzle body (2), characterized in that: It also includes a cleaning mechanism (3), which is disposed on the inner wall of the nozzle body (2). A push ring (301) is slidably connected to one end of the inner wall of the nozzle body (2). Several evenly distributed cleaning brushes (302) are fixedly connected to one end of the push ring (301). A cleaning block (303) is fixedly connected to one end of the cleaning brush (302). Cleaning components (310) are provided on both the gun rod (1) and the outer wall of the nozzle body (2).

2. The self-cleaning nozzle of the dual-fluid spray gun according to claim 1, characterized in that, The cleaning mechanism (3) includes a protective sleeve (304) fixedly connected between one end of the push ring (301) and the inner wall of the nozzle body (2). The inner wall of the protective sleeve (304) is provided with a compression spring (305), and the two ends of the compression spring (305) are fixedly connected to one end of the push ring (301) and the inner wall of the nozzle body (2), respectively.

3. The self-cleaning nozzle of the dual-fluid spray gun according to claim 1, characterized in that, Guide rods (306) are fixedly connected to both sides of the inner wall of the nozzle body (2), and the push ring (301) is slidably connected to the two guide rods (306).

4. The self-cleaning nozzle of the dual-fluid spray gun according to claim 1, characterized in that, A baffle (307) is fixedly connected to the end of the push ring (301) away from the cleaning brush (302).

5. The self-cleaning nozzle of the dual-fluid spray gun according to claim 1, characterized in that, The push ring (301) has several evenly distributed through holes (308) at one end.

6. The self-cleaning nozzle of the dual-fluid spray gun according to claim 1, characterized in that, Both sides of the outer wall of the nozzle body (2) are slidably connected to limit rods (309), one end of the limit rod (309) passes through the nozzle body (2) and extends to both sides of the push ring (301).

7. The self-cleaning nozzle of the dual-fluid spray gun according to claim 6, characterized in that, The other end of the limiting rod (309) is fixedly connected to a pull ring.

8. The self-cleaning nozzle of the dual-fluid spray gun according to claim 1, characterized in that, The cleaning assembly (310) includes a mounting ring (3101) fixedly connected to one end of the outer wall of the gun barrel (1), and liquid storage cylinders (3102) are installed on both sides of the mounting ring (3101).

9. The self-cleaning nozzle of the dual-fluid spray gun according to claim 8, characterized in that, A fixed sleeve (3103) is rotatably threaded to one end of the bottom delivery pipe of the liquid storage cylinder (3102).

10. The self-cleaning nozzle of the dual-fluid spray gun according to claim 8, characterized in that, Both sides of the nozzle body (2) are connected to conduits (3104), and the liquid storage cylinder (3102) is threadedly connected to one end of the conduit (3104) through a fixing sleeve (3103).

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