Electrostatic spray gun

Abstract

The utility model relates to the technical field of spray gun, disclose a spray gun for electrostatic spraying, including the gun body, the lower extreme of gun body is provided with the gun handle, the other side of gun body is connected with the spray gun pipe, one side of spray gun pipe is provided with the locating cylinder, the inner chamber fixed mounting of locating cylinder has the wedge ring, one side mouth along fixed mounting of spray gun pipe has the connecting rod. The utility model technical scheme can make the limiting strip to resist the right side of the nozzle, thereby in the process of continuing to rotate the locating cylinder, the nozzle will not continue to move with the locating cylinder, and further reach the nozzle will separate with the clamping locating cylinder while the locating cylinder separates with the spray gun pipe, the staff's trouble of separating the nozzle again after taking down the locating cylinder is saved, and further improve the staff's replacement efficiency to the nozzle, and at the same time, the ball cooperation on the locating ring and the limiting strip can be used, so that the nozzle convenient to replace can be inserted into the locating cylinder smoothly, and the replacement convenience of the nozzle is further improved.

Description

Technical Field

[0001] This utility model relates to the field of spray gun technology, specifically to a spray gun for electrostatic spraying. Background Technology

[0002] Electrostatic spraying is a coating method that uses the principle of corona discharge to make atomized paint negatively charged under the action of a high-voltage DC electric field and then adsorbed onto the surface of a positively charged substrate for discharge. Electrostatic spraying equipment consists of a spray gun, a spray cup, and an electrostatic spraying high-voltage power supply.

[0003] The implementation of this technical solution has at least the following drawbacks: Existing spray guns are usually equipped with detachable nozzles, which facilitates nozzle replacement. However, during nozzle removal, the positioning cylinder often causes the nozzle to be difficult to separate from the positioning cylinder due to jamming and sealing, thus affecting the efficiency of nozzle replacement by operators. Therefore, improvements are urgently needed. Thus, we propose a spray gun for electrostatic spraying. Utility Model Content

[0004] The purpose of this utility model is to provide a spray gun for electrostatic spraying, which solves the problem mentioned in the background art that the positioning cylinder often makes it difficult to separate the nozzle from the positioning cylinder during the nozzle removal process due to jamming and sealing, thus affecting the efficiency of nozzle replacement by the operator.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a spray gun for electrostatic spraying, comprising a gun body, a gun handle at the lower end of the gun body, a spray gun tube connected to the other side of the gun body, a positioning cylinder on one side of the spray gun tube, a wedge ring fixedly installed in the inner cavity of the positioning cylinder, a connecting rod fixedly installed on one side of the spray gun tube, a positioning ring sleeved on the outer side of the connecting rod, and the positioning ring fixedly connected to the connecting rod, a plurality of straight rods penetrating through the inner cavity of the positioning ring, a limit strip fixedly installed at the other end of the straight rod, a plurality of ball bearings rotatably installed at the lower end of the limit strip, a nozzle movably inserted into the middle of the inner cavity of the positioning cylinder, and the other end of the nozzle movably connected to one side of the spray gun tube through a sealing ring.

[0006] By adopting the above technical solution, the positioning cylinder can be separated from the spray gun tube. At the same time, as the positioning cylinder moves to the left, the wedge-shaped ring inside the positioning cylinder pushes the ball, causing the ball to move towards the center. This, in turn, causes multiple limiting strips to move towards the center, so that the limiting strips abut against the right side of the nozzle. As the positioning cylinder continues to rotate, the nozzle will not follow the positioning cylinder. Thus, the nozzle will separate from the positioning cylinder at the same time as the positioning cylinder separates from the spray gun tube, eliminating the trouble of separating the nozzle again after the positioning cylinder is removed. This improves the efficiency of nozzle replacement. In addition, the ball bearings on the positioning ring and limiting strips can be used to facilitate the insertion of the replacement nozzle into the positioning cylinder, further improving the convenience of nozzle replacement.

[0007] Optionally, a ball is fixedly installed at one end of the straight rod near the wedge ring, and the ball is in contact with the wedge ring.

[0008] By adopting the above technical solution and setting the ball, the wedge ring can be conveniently used to push the straight rod.

[0009] Optionally, the other side surface of the spray gun tube is provided with an external thread, and the inner wall of the positioning cylinder is provided with an internal thread, and the external thread and the internal thread are helically connected.

[0010] By adopting the above technical solution, the positioning cylinder can be installed and connected through the cooperation of external and internal threads.

[0011] Optionally, the straight rods are configured as four, and the straight rods are arranged in a ring.

[0012] By adopting the above technical solution and setting up the straight rod, the four limit bars can be driven to move synchronously.

[0013] Optionally, a spring is fixedly installed at the upper end of the limiting strip, and the other end of the spring is fixedly connected to the inner side of the positioning ring.

[0014] By adopting the above technical solution and using the spring, the limit bar can be reset.

[0015] Optionally, a hook is fixedly installed on one side of the upper end of the gun body.

[0016] By adopting the above technical solution and using hooks, the gun body can be easily hung up and stored.

[0017] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0018] This technical solution, through the design of a gun body, gun handle, spray gun pipe, positioning cylinder, wedge ring, ball, limiting strip, spring, and nozzle, allows the positioning cylinder to separate from the spray gun pipe. Simultaneously, as the positioning cylinder moves to the left, the wedge ring inside the positioning cylinder pushes the ball, causing it to move towards the center. This, in turn, moves multiple limiting strips towards the center, causing the limiting strips to abut against the right side of the nozzle. Therefore, as the positioning cylinder continues to rotate, the nozzle will not follow the positioning cylinder's movement. This achieves the goal of separating the nozzle from the positioning cylinder simultaneously with the separation of the positioning cylinder from the spray gun pipe, eliminating the need for workers to separate the nozzle again after removing the positioning cylinder. This improves the efficiency of nozzle replacement. Furthermore, the ball bearings on the positioning ring and limiting strips facilitate the smooth insertion of the replacement nozzle into the positioning cylinder, further enhancing the ease of nozzle replacement. Attached Figure Description

[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a three-dimensional structural diagram of a spray gun for electrostatic spraying according to the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of a spray gun for electrostatic spraying according to the present invention;

[0022] Figure 3 This is a side view of the positioning ring structure of a spray gun for electrostatic spraying according to the present invention;

[0023] Figure 4 This is a partially enlarged structural diagram of point A of the electrostatic spraying gun of this utility model.

[0024] In the diagram: 1. Gun body; 11. Gun handle; 12. Hook; 13. Spray gun barrel; 14. External thread; 2. Positioning cylinder; 21. Wedge ring; 22. Connecting rod; 23. Positioning ring; 24. Ball; 25. Straight rod; 26. Limiting strip; 3. Ball bearing; 4. Spring; 5. Nozzle. Detailed Implementation

[0025] Please see Figure 1-4This utility model provides a technical solution: a spray gun for electrostatic spraying, including a gun body 1, a gun handle 11 at the lower end of the gun body 1, a spray gun tube 13 connected to the other side of the gun body 1, a positioning cylinder 2 on one side of the spray gun tube 13, a wedge-shaped ring 21 fixedly installed in the inner cavity of the positioning cylinder 2, a connecting rod 22 fixedly installed on the edge of one side of the spray gun tube 13, a positioning ring 23 sleeved on the outer side of the connecting rod 22, and the positioning ring 23 fixedly connected to the connecting rod 22, a plurality of straight rods 25 penetrating through the inner cavity of the positioning ring 23, a limit strip 26 fixedly installed at the other end of the straight rod 25, and a plurality of ball bearings rotatably installed at the lower end of the limit strip 26. 3. A nozzle 5 is movably inserted into the middle of the inner cavity of the positioning cylinder 2. The other end of the nozzle 5 is movably connected to one side of the spray gun tube 13 through a sealing ring. There are four straight rods 25, which are arranged in a ring. The straight rods 25 can drive the four limit bars 26 to move synchronously. A spring 4 is fixedly installed on the upper end of the limit bar 26. The other end of the spring 4 is fixedly connected to the inner side of the positioning ring 23. The spring 4 can drive the limit bar 26 to reset. A hook 12 is fixedly installed on one side of the upper end of the gun body 1. The hook 12 makes it convenient to hang and store the gun body 1.

[0026] A ball 24 is fixedly installed at one end of the straight rod 25 near the wedge ring 21, and the ball 24 fits against the wedge ring 21. The ball 24 facilitates the wedge ring 21 to push the straight rod 25.

[0027] The other side surface of the spray gun tube 13 is provided with an external thread 14, and the inner wall of the positioning cylinder 2 is provided with an internal thread. The external thread 14 and the internal thread are spirally connected. The positioning cylinder 2 can be installed and connected by the external thread 14 and the internal thread.

[0028] During replacement, first rotate the positioning cylinder 2 counterclockwise. The positioning cylinder 2 moves to the left along the external thread 14, separating the positioning cylinder 2 from the spray gun pipe 13. At the same time, during the leftward movement of the positioning cylinder 2, the wedge-shaped ring 21 inside the positioning cylinder 2 pushes the ball 24, causing the ball 24 to move towards the center. This causes multiple limiting strips 26 to move towards the center, so that the limiting strips 26 abut against the right side of the nozzle 5. Thus, during the continued rotation of the positioning cylinder 2, the nozzle 5 will not continue to move with the positioning cylinder 2. This achieves the goal of separating the positioning cylinder 2 from the spray gun pipe 13, and simultaneously separating the nozzle 5 from the engaged positioning cylinder 2. This eliminates the trouble of separating the nozzle 5 again after the positioning cylinder 2 is removed, thereby improving the efficiency of nozzle 5 replacement. At the same time, through the cooperation of the ball bearings 3 on the positioning ring 23 and the limiting strips 26, the replacement nozzle 5 can be smoothly inserted into the positioning cylinder 2, further improving the convenience of nozzle 5 replacement.

Claims

1. An electrostatic spray gun comprising a body (1), characterised in that: The lower end of the gun body (1) is provided with a gun handle (11). The other side of the gun body (1) is connected to a spray gun pipe (13). A positioning cylinder (2) is provided on one side of the spray gun pipe (13). A wedge ring (21) is fixedly installed in the inner cavity of the positioning cylinder (2). A connecting rod (22) is fixedly installed on the edge of one side of the spray gun pipe (13). A positioning ring (23) is sleeved on the outside of the connecting rod (22). The positioning ring (23) is fixedly connected to the connecting rod (22). A plurality of straight rods (25) are provided through the inner cavity of the positioning ring (23). A limit strip (26) is fixedly installed on the other end of the straight rod (25). A plurality of balls (3) are rolled on the lower end of the limit strip (26). A nozzle (5) is movably inserted into the middle of the inner cavity of the positioning cylinder (2). The other end of the nozzle (5) is movably connected to one side of the spray gun pipe (13) through a sealing ring.

2. An electrostatic spray gun according to claim 1, wherein: A ball (24) is fixedly installed at one end of the straight rod (25) near the wedge ring (21), and the ball (24) is in contact with the wedge ring (21).

3. An electrostatic spray gun according to claim 2, wherein: The other side surface of the spray gun tube (13) is provided with an external thread (14), and the inner wall of the positioning cylinder (2) is provided with an internal thread. The external thread (14) is helically connected to the internal thread.

4. An electrostatic spray gun according to claim 3, wherein: The straight rods (25) are set to four, and the straight rods (25) are arranged in a ring.

5. An electrostatic spray gun according to claim 4, wherein: A spring (4) is fixedly installed at the upper end of the limiting strip (26), and the other end of the spring (4) is fixedly connected to the inner side of the positioning ring (23).

6. An electrostatic spray gun according to claim 5, wherein: A hook (12) is fixedly installed on one side of the upper end of the gun body (1).

Images