A paint spray gun having a pressure sensor

Abstract

The utility model discloses a paint spraying gun with pressure sensor relates to paint spraying gun utensil technical field, including handle and install the gun body of handle top, and the gun body front end is connected with atomizing cap threadedly, and the gun body front end is installed with the gun head, and the gun head is inserted in the inside of atomizing cap, install dredging mechanism on the gun body, the utility model discloses through the cooperation of pressure sensor and the pressure gauge on the gun body in third cavity, the inside pressure size of paint spraying gun is monitored in real time, and then simplifies pressure regulation process, saves the adjustment time, improves paint spraying efficiency, again through the inside installation of the gun head with the lug, the paint flow direction is broken down conveniently, and then slows down paint solidification speed, again through the cooperation of first spring, second spring, first sealing block and axle tip are driven to reset rapidly, and then produce high pressure and pass through the gun head and sensor of jam, avoid the jam of spray gun, finally solve the problem that the pressure regulation step of existing device is complicated and the spray gun is easy to jam.

Description

Technical Field

[0001] This utility model relates to the technical field of paint spray guns, and in particular to a paint spray gun with a pressure sensor. Background Technology

[0002] For a long time, spray guns have mainly relied on compressed air to atomize paint and spray it onto the surface of objects. The stability and precision of air pressure play a decisive role in the spraying effect. Different types of paint, such as automotive paint, have extremely high requirements for the mechanical properties, fullness, gloss, adhesion, hardness, scratch resistance and weather resistance of the paint film, so specific air pressure conditions are required to match them.

[0003] However, traditional spray guns have significant shortcomings in air pressure control: Firstly, their air pressure display devices and adjustment knobs are mostly located at the air inlet, requiring operators to adjust the knobs first and then move to read the air pressure value, making the operation process cumbersome and inconvenient, which seriously affects work efficiency; secondly, paint will solidify over time, and due to the varying quality of paint, some paints contain higher levels of impurities, resulting in faster solidification and causing spray gun blockage; therefore, the above problems need to be addressed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a paint spray gun with a pressure sensor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a paint spray gun with a pressure sensor, comprising a handle and a gun body mounted on the top of the handle, wherein an atomizing cap is threadedly connected to the front end of the gun body, and a gun head is mounted on the front end of the gun body, the gun head being inserted into the atomizing cap; and a dredging mechanism is mounted on the gun body.

[0006] Preferably, the handle has a first cavity inside, a first adjustment knob is installed at the lower end of the handle, a first rotating shaft is fixedly connected to the first adjustment knob, the lower end of the first rotating shaft is threadedly connected to the bottom end of the handle, and a conical first valve is fixedly connected to the top end of the first rotating shaft. A first limiting ring that cooperates with the first valve is installed on the inner side of the first cavity.

[0007] Preferably, the gun body has a second cavity inside, and the second cavity communicates with the atomizing cap.

[0008] Preferably, a feeding port is obliquely installed below the front end of the gun body, and a feeding chamber is opened at the lower end of the gun body. A second adjusting knob is installed at the lower end of the feeding chamber. A second rotating shaft is fixedly connected to the second adjusting knob. The lower end of the second rotating shaft is threadedly connected to the bottom end of the feeding chamber. A conical second valve is fixedly connected to the top end of the second rotating shaft. A second limiting ring that cooperates with the second valve is installed on the inner side of the feeding chamber.

[0009] Preferably, the gun body has a third cavity and a fourth cavity at its front and rear ends, respectively. The third cavity communicates with the feeding chamber, and a connecting shaft is installed inside the third cavity and the fourth cavity. The connecting shaft is equipped with a shaft tip, a third valve, a first sealing block, a second sealing block, a third sealing block, and a fourth sealing block in sequence from front to back. The shaft tip penetrates the atomizing cap. The first and second sealing blocks are located in the third cavity, and the third and fourth sealing blocks are located in the fourth cavity. The fourth sealing block is located directly above the first cavity, and the first sealing block is located directly above the feeding chamber.

[0010] Preferably, a third limiting ring is installed on the inner side of the third cavity, a first spring is installed between the first sealing block and the third limiting ring, a fourth limiting ring is installed on the inner side of the fourth cavity, and a second spring is installed between the third sealing block and the fourth limiting ring.

[0011] Preferably, the inner side of the gun head is provided with a plurality of protrusions, and a pressure sensor is installed between the gun head and the third cavity. The third valve is inserted into the inner side of the pressure sensor, and a pressure gauge is installed on the gun body through a mounting ring. The pressure sensor is connected to the pressure gauge.

[0012] Preferably, the unblocking mechanism includes a first trigger hinged to the gun body and a mounting block fixed to the handle. A positioning block is inserted into the mounting block, a third spring is installed between the positioning block and the inner bottom of the mounting block, and a connecting rod is fixed to the rear end of the positioning block. The connecting rod is inserted into the handle, a second trigger is fixed to one side of the connecting rod, and a locking block is fixed to the bottom end of the first trigger.

[0013] Preferably, the first cavity, the second cavity, and the fourth cavity are connected.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of the pressure sensor in the third cavity and the pressure gauge on the gun body, facilitates real-time monitoring of the internal pressure of the paint spray gun, thereby simplifying the pressure adjustment process, saving adjustment time, and improving painting efficiency. Furthermore, by installing a protrusion inside the gun head, the direction of paint flow is disrupted, thus slowing down the paint solidification speed. Additionally, the cooperation of the first and second springs facilitates the rapid reset of the first sealing block and the shaft tip, thereby generating high pressure to clear any blockages in the gun head and sensor, preventing spray gun clogging. Ultimately, this solves the problems of cumbersome pressure adjustment steps and easy clogging of the spray gun in existing devices. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the device proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the unblocking mechanism proposed in this utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the device proposed in this utility model;

[0019] Figure 4 The present utility model proposes Figure 3 Enlarged schematic diagram of the structure at part A in the middle.

[0020] The components in the diagram are numbered as follows: 1. Handle; 2. Gun body; 3. Atomizing cap; 4. First cavity; 5. First adjusting knob; 6. First valve; 7. Second cavity; 8. Feed port; 9. Second adjusting knob; 10. Second valve; 11. Third cavity; 12. Fourth cavity; 13. Connecting shaft; 14. Shaft tip; 15. Gun head; 16. Third valve; 17. First sealing block; 18. Second sealing block; 19. Third sealing block; 20. Fourth sealing block; 21. Pressure sensor; 22. Third limiting ring; 23. Fourth limiting ring; 24. Pressure gauge; 25. First trigger; 26. Locking block; 27. Positioning block; 28. Third spring; 29. ​​Connecting rod; 30. Second trigger. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example: See Figure 1-4This utility model discloses a paint spray gun with a pressure sensor, comprising a handle 1 and a gun body 2 mounted on the top of the handle 1. The handle 1 facilitates the opening of a first air intake cavity 4; the gun body 2 facilitates paint spraying; an atomizing cap 3 is threadedly connected to the front end of the gun body 2, facilitating paint atomization; a gun head 15 is mounted on the front end of the gun body 2, facilitating paint spraying; the gun head 15 is inserted into the atomizing cap 3, and a dredging mechanism is installed on the gun body 2; the handle 1 has a first cavity 4 inside, facilitating the installation of a first valve 6; a first adjusting knob 5 is installed at the lower end of the handle 1, facilitating the raising and lowering of the first valve 6; and a... The first rotating shaft has its lower end threadedly connected to the bottom end of the handle 1, and a conical first valve 6 is fixedly connected to the top end of the first rotating shaft, which facilitates fine adjustment of the air intake pressure. A first limiting ring that matches the first valve 6 is installed on the inner side of the first cavity 4. A second cavity 7 is opened inside the gun body 2, which facilitates the delivery of high-pressure gas to the atomizing cap 3. The second cavity 7 communicates with the atomizing cap 3. A feeding port 8 is obliquely installed below the front end of the gun body 2, and a feeding chamber is opened at the lower end of the gun body 2. A second adjusting knob 9 is installed at the lower end of the feeding chamber, which facilitates changing the height of the second valve 10. A second rotating shaft is fixedly connected to the second adjusting knob 9, and the lower end of the second rotating shaft is threadedly connected to the bottom end of the feeding chamber.

[0023] In this invention, a conical second valve 10 is fixedly connected to the top of the second rotating shaft, which facilitates the adjustment of paint pressure. A second limiting ring that matches the second valve 10 is installed on the inner side of the feeding chamber. A third cavity 11 and a fourth cavity 12 are respectively opened at the front and rear ends of the gun body 2. The third cavity 11 communicates with the feeding chamber, and the connecting shaft 13 is easily installed through the third cavity 11 and the fourth cavity 12. The connecting shaft 13 is installed inside the third cavity 11 and the fourth cavity 12, which facilitates the installation of the shaft tip 14, the third valve 16, the first sealing block 17, the second sealing block 18, the third sealing block 19, and the fourth sealing block 20. The shaft tip 14 and the third valve 16 are installed sequentially from front to back on the connecting shaft 13. The first sealing block 17, the second sealing block 18, the third sealing block 19, and the fourth sealing block 20 facilitate sealing of the feeding trough and the first cavity 4 via the first sealing block 17 and the third sealing block 19; the shaft tip 14 and the third valve 16 facilitate clearing the paint blockage in the nozzle 15 and the pressure sensor 21; the shaft tip 14 penetrates the atomizing cap 3; the first sealing block 17 and the second sealing block 18 are located in the third cavity 11; the third sealing block 19 and the fourth sealing block 20 are located in the fourth cavity 12; the fourth sealing block 20 is located directly above the first cavity 4; the first sealing block 17 is located directly above the feeding chamber; a third limiting ring 22 is installed on the inner side of the third cavity 11; the third limiting ring 22 and the fourth limiting ring 23 facilitate matching. The first sealing block 17 and the third sealing block 19 compress the first and second springs; a first spring is installed between the first sealing block 17 and the third limiting ring 22; a fourth limiting ring 23 is installed on the inner side of the fourth cavity 12; a second spring is installed between the third sealing block 19 and the fourth limiting ring 23; multiple protrusions are installed on the inner side of the nozzle 15; and a pressure sensor 21 is installed between the nozzle 15 and the third cavity 11, which facilitates monitoring of the internal pressure of the spray gun; a third valve 16 is inserted into the inner side of the pressure sensor 21; and a pressure gauge 24 is installed on the gun body 2 via a mounting ring, which facilitates a direct display of the pressure; the pressure sensor 21 is connected to the pressure gauge 24. The unblocking mechanism includes a first trigger 25 hinged to the gun body 2 and a mounting block fixed to the handle 1. The first trigger 25 facilitates the movement of the connecting shaft 13 to the rear end. A positioning block 27 is inserted into the mounting block, which facilitates locking the locking block 26. A third spring 28 is installed between the positioning block 27 and the inner bottom of the mounting block, which facilitates the extension and retraction of the positioning block 27. A connecting rod 29 is fixed to the rear end of the positioning block 27, which facilitates the control of the positioning block 27 by the second trigger 30. The connecting rod 29 is inserted into the handle 1, and the second trigger 30 is fixed to one side of the connecting rod 29. The locking block 26 is fixed to the bottom end of the first trigger 25. The first cavity 4, the second cavity 7 and the fourth cavity 12 are connected.

[0024] Working Principle: In use of this invention, firstly, the air pipe is connected to the first cavity 4, and the paint pipe is connected to the feeding port 8. Then, the first trigger 25 is pulled, which drives the connecting shaft 13 to move rearward. At the same time, the fourth sealing block 20 and the first sealing block 17 disengage from the first cavity 4 and the feeding chamber, respectively. Simultaneously, high-pressure gas enters the fourth cavity 12 through the first cavity 4, then enters the second cavity 7, and finally is transmitted to the atomizing cap 3, forming an airflow layer on the surface of the atomizing cap 3. Meanwhile, the paint enters the third cavity 11 through the feeding chamber, and the connecting shaft 13 drives the shaft tip 14 to move rearward. At this time, the nozzle 15 is no longer blocked by the shaft tip 14, and the paint is sprayed out from the nozzle 15. At the same time, the pressure sensor 21 senses the pressure inside the nozzle, and the pressure inside the nozzle can be directly observed through the pressure gauge 24. Simultaneously, the first trigger 25 will press down on the positioning block 27, and then the positioning block 27 will lock the locking block 26. At this time, the paint spraying will proceed smoothly. It is not necessary to hold the first trigger 25 continuously. If it is necessary to adjust the air pressure or paint pressure, simply turn the first adjustment knob 5 and the second adjustment knob 9 to change the height of the first valve 6 and the second valve 10. Through the cooperation of the first limit ring and the second limit ring, the opening of the nozzle is adjusted. The protrusion on the nozzle 15 can make the flow direction of the paint chaotic, slow down its solidification speed, and thus prevent the nozzle 15 from being blocked. If the nozzle 15 or the pressure sensor 21 is blocked due to impurities, simply pull the second trigger 30 down. The second trigger 30 drives the positioning block 27 down, releasing the lock on the locking block 26. At this time, with the cooperation of the first spring and the second spring, the connecting shaft 13 quickly resets, squeezing to generate high pressure. In addition, the third valve 16 can push the paint blocked inside the pressure sensor 21 into the nozzle 15. The shaft tip 14 can squeeze out the blockage at the opening of the nozzle 15. Finally, simply remove the nozzle 15 for cleaning.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A paint spray gun with a pressure sensor, comprising a handle (1) and a gun body (2) mounted on the top of the handle (1), characterized in that: The gun body (2) has a threaded connection to an atomizing cap (3) at the front end, and a gun head (15) is installed at the front end of the gun body (2), with the gun head (15) inserted into the atomizing cap (3); a dredging mechanism is installed on the gun body (2).

2. A paint spray gun with a pressure sensor according to claim 1, characterized in that: The handle (1) has a first cavity (4) inside, and a first adjustment knob (5) is installed at the lower end of the handle (1). A first rotating shaft is fixedly connected to the first adjustment knob (5). The lower end of the first rotating shaft is threadedly connected to the bottom end of the handle (1), and a conical first valve (6) is fixedly connected to the top end of the first rotating shaft. A first limiting ring that cooperates with the first valve (6) is installed on the inner side of the first cavity (4).

3. A paint spray gun with a pressure sensor according to claim 2, characterized in that: The gun body (2) has a second cavity (7) inside, which is connected to the atomizing cap (3).

4. A paint spray gun with a pressure sensor according to claim 3, characterized in that: The gun body (2) has a feeding port (8) installed obliquely below the front end, and a feeding chamber is opened at the lower end of the gun body (2). A second adjustment knob (9) is installed at the lower end of the feeding chamber. A second rotating shaft is fixedly connected to the second adjustment knob (9). The lower end of the second rotating shaft is threadedly connected to the bottom end of the feeding chamber. A conical second valve (10) is fixedly connected to the top end of the second rotating shaft. A second limiting ring that matches the second valve (10) is installed on the inner side of the feeding chamber.

5. A paint spray gun with a pressure sensor according to claim 4, characterized in that: The gun body (2) has a third cavity (11) and a fourth cavity (12) at its front and rear ends respectively. The third cavity (11) is connected to the feeding chamber. A connecting shaft (13) is installed inside the third cavity (11) and the fourth cavity (12). The connecting shaft (13) is installed with a shaft tip (14), a third valve (16), a first sealing block (17), a second sealing block (18), a third sealing block (19), and a fourth sealing block (20) in sequence from front to back. The shaft tip (14) penetrates the atomizing cap (3). The first sealing block (17) and the second sealing block (18) are located in the third cavity (11). The third sealing block (19) and the fourth sealing block (20) are located in the fourth cavity (12). The fourth sealing block (20) is located directly above the first cavity (4). The first sealing block (17) is located directly above the feeding chamber.

6. A paint spray gun with a pressure sensor according to claim 5, characterized in that: A third limiting ring (22) is installed on the inner side of the third cavity (11), a first spring is installed between the first sealing block (17) and the third limiting ring (22), a fourth limiting ring (23) is installed on the inner side of the fourth cavity (12), and a second spring is installed between the third sealing block (19) and the fourth limiting ring (23).

7. A paint spray gun with a pressure sensor according to claim 5, characterized in that: Multiple protrusions are installed on the inner side of the gun head (15), and a pressure sensor (21) is installed between the gun head (15) and the third cavity (11). The third valve (16) is inserted into the inner side of the pressure sensor (21), and a pressure gauge (24) is installed on the gun body (2) through a mounting ring. The pressure sensor (21) is connected to the pressure gauge (24).

8. A paint spray gun with a pressure sensor according to claim 1, characterized in that: The unblocking mechanism includes a first trigger (25) hinged to the gun body (2) and a mounting block fixed to the handle (1). A positioning block (27) is inserted into the mounting block. A third spring (28) is installed between the positioning block (27) and the inner bottom of the mounting block. A connecting rod (29) is fixed to the rear end of the positioning block (27). The connecting rod (29) is inserted into the handle (1). A second trigger (30) is fixed to one side of the connecting rod (29). A locking block (26) is fixed to the bottom end of the first trigger (25).

9. A paint spray gun with a pressure sensor according to claim 2, characterized in that: The first cavity (4), the second cavity (7), and the fourth cavity (12) are connected.

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