Spray gun with self-rotating nozzle

Abstract

The utility model discloses a spray gun with a self-rotating nozzle, which comprises a gun body and a nozzle assembly arranged at the front end of the gun body, a needle plug and an air passage are arranged in the gun body, and the nozzle assembly comprises a nozzle arranged at the front end of the gun body, an air cap arranged on the nozzle and a positioning ring for positioning the air cap. The nozzle is characterized in that a plurality of air corners are formed on the air cap, a plurality of airflow holes are formed in the inner surfaces of the air corners, one or more self-rotating jet holes are formed in the side faces of the air corners, the jet holes are communicated with the air channel, and airflow jetted by the jet holes pushes the air cap to rotate around the nozzle. The air cap can be driven by the spraying hole to rotate automatically, so that the airflow hole is driven to be located at different positions, the shape of atomized materials sprayed by the nozzle is changed continuously, the working efficiency of the nozzle is improved, meanwhile, the nozzle can spray more distinctive patterns, and the use occasion of the spray gun is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to a spray gun, especially a spray gun with self-rotating nozzle. BACKGROUND

[0002] The nozzle assembly of the spray gun in the prior art is composed of a nozzle, a cap and a positioning ring. The cap is used for guiding airflow. The airflow generates negative pressure outside the spray nozzle of the spray gun, thereby generating siphon effect to spray liquid from the spray gun. At the same time, the airflow breaks the liquid to make the liquid sprayed from the spray gun more uniform. For example, the utility model patent with the patent number CN201911388346.2 and the publication date of April 24, 2020 discloses a double linkage paint spray gun, which comprises a gun barrel, a nozzle and a gun handle and a trigger. The nozzle is arranged at the front end of the gun barrel. The front end of the nozzle is provided with a hole to form a spray port. The gun barrel is provided with a gas conveying channel and a material conveying channel. The gun handle is provided with an air inlet channel connected with the gas conveying channel. The gun barrel and the gun handle are provided with an outlet assembly and an air inlet assembly for controlling the opening and closing of the material conveying channel and the air inlet channel. The trigger can control the opening and closing of the outlet assembly and the air inlet assembly to synchronize the corresponding channels. In the above scheme, the nozzle is fixed at the front end of the gun barrel. During the working process, the nozzle does not rotate. SUMMARY

[0003] The utility model solves the technical problems of the prior art. The spray gun with self-rotating nozzle has higher working efficiency and can spray different trajectories.

[0004] According to the spray gun with self-rotating nozzle provided by the utility model, the gun body is provided with a needle plug and an air channel. The nozzle assembly comprises a nozzle installed at the front end of the gun body, a cap installed on the nozzle and a positioning ring for positioning the cap. The cap is formed with a plurality of air corners. The inner surface of the air corner is formed with a plurality of airflow holes. The side surface of the air corner is formed with one or more self-rotating spray holes. The spray hole is communicated with the air channel. The airflow sprayed from the spray hole pushes the cap to rotate around the nozzle.

[0005] According to the spray gun with self-rotating nozzle provided by the utility model, the gun body is provided with a needle plug and an air channel. The nozzle assembly comprises a nozzle installed at the front end of the gun body, a cap installed on the nozzle and a positioning ring for positioning the cap. The cap is formed with a plurality of air corners. The inner surface of the air corner is formed with a plurality of airflow holes. The side surface of the air corner is formed with one or more self-rotating spray holes. The spray hole is communicated with the air channel. The airflow sprayed from the spray hole pushes the cap to rotate around the nozzle.

[0006] Further comprising, the positioning ring is provided with a clamping groove. The outer periphery of the cap is formed with a clamping ring. The clamping ring is clamped into the clamping groove and rotates along the clamping groove.

[0007] Further comprising, further comprising a clamping spring. The clamping spring is clamped into the positioning ring and abuts against the clamping ring.

[0008] Further comprising, a first circular support ring is arranged between the clamping ring and the positioning ring.

[0009] Further comprising, a second circular support ring is arranged between the air cap and the nozzle.

[0010] Further comprising, the air angle is arranged with the injection hole on the same side.

[0011] Further comprising, the air angle is two, and the air angle is arranged with two injection holes on the side.

[0012] Compared with the prior art, the spray gun with the self-rotating nozzle has the following advantages: the air cap of the utility model can self-rotate under the drive of the injection hole, so as to drive the airflow hole to be in different positions, make the shape of the atomized material sprayed by the nozzle change continuously, improve the working efficiency of the nozzle, and also can make the nozzle spray more characteristic patterns, increase the use occasions of the spray gun. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the perspective view of the utility model.

[0014] Figure 2 It is the bottom perspective view of the utility model.

[0015] Figure 3 It is the sectional view of the utility model.

[0016] Figure 4 It is Figure 3 It is the enlarged view of A in the figure.

[0017] Figure 5 It is the three-dimensional exploded view of the air cap and the positioning ring in the utility model. DETAILED DESCRIPTION

[0018] In order to clearly illustrate the scheme in the utility model, the preferred embodiments are given below and are described in detail in combination with the drawings. The following description is essentially only exemplary and is not intended to limit the application or use of the present disclosure. It should be understood that in all the drawings, corresponding reference numerals represent the same or corresponding parts and features.

[0019] As Figures 1 to 5The utility model provides a spray gun with self-rotating nozzle, including gun body 1 and the nozzle assembly 2 of setting in the front end of gun body 1, be provided with needle plug 3 and air passage 4 in gun body 1, the nozzle assembly 2 includes the nozzle 21 of installing in the front end of gun body 1, the air cap 22 of installing on the nozzle 21 and the positioning ring 23 of positioning air cap 22, the air cap 22 is shaped with multiple air angle 24, the inner surface 241 of air angle 24 is shaped with multiple air flow hole 25, the lateral surface 242 of air angle 24 is shaped with one or more self-rotating injection hole 26, the injection hole 26 communicates with air passage 4, and the air flow of injection hole 26 pushes air cap 22 to rotate around nozzle 21.In this embodiment, the air angle 24 is the whole cubic structure, the face of air angle 24 facing the center of air cap 22 is the inner surface 241, the face opposite to the inner surface 241 is the outer surface 243, the face of air angle 24 connecting with air cap 22 is the bottom surface, the opposite face of bottom surface is the top surface 244, and the remaining two lateral faces of air angle 24 are the lateral surface 242.The inner surface 241 is a slope structure, so that the air flow of air flow hole 25 is sprayed according to a certain angle, thereby controlling the shape of atomized material spraying.The utility model is provided with injection hole 26, and the air flow of injection hole 26 generates rear lateral thrust, so that air cap 22 rotates, thereby controlling the position of air flow hole 25 to change constantly, making the shape of atomized material spraying change constantly, and different characteristic patterns can be sprayed.Meanwhile, due to adopting self-rotating spraying mode, the work efficiency is improved.

[0020] Referring to Figures 1 to 5 In the above embodiment of the utility model, further comprising, the positioning ring 23 is provided with the clamping groove 231, the air cap 22 is formed with the snap ring 221 on the outer periphery, the snap ring 221 is clamped into the clamping groove 231 and rotates along the clamping groove 231.The snap ring 221 and the clamping groove 231 cooperate with the mounting structure, which is not only beneficial to installation, but also can make the air cap 22 rotate.

[0021] Referring to Figures 1 to 5 In the above embodiment of the utility model, further comprising, further comprising a clamping spring 27, the clamping spring 27 is clamped into the positioning ring 23 and abuts against the snap ring 221.The outer side of the positioning ring 23 is formed with a convex ring, and the clamping spring 27 is clamped into the convex ring and limited by the convex ring.The clamping spring 27 plays a role in limiting the snap ring 221, so that the snap ring 27 is located in the clamping groove 231 and cannot be taken out.The above structure is convenient to install and simple in structure.

[0022] Referring to Figures 1 to 5In the above embodiment provided by the utility model further includes, the first circular support ring 28 is arranged between the snap ring 221 and the positioning ring 23.The line contact between the first circular support ring 28 and the snap ring 221 makes the rotation of the snap ring 221 more smooth.

[0023] Referring to Figures 1 to 5 In the above embodiment provided by the utility model further includes, the second circular support ring 29 is arranged between the air cap 22 and the nozzle 21.The line contact between the second circular support ring 29 and the air cap 22 makes the rotation of the air cap 22 more smooth.

[0024] Referring to Figures 1 to 5 In the above embodiment provided by the utility model further includes, the same side surface 242 of all the air corners 24 is provided with the injection hole 26.The air corner 24 in the embodiment is two, and the side surface 242 of each air corner 24 is provided with two injection holes 26.The airflow sprayed by the injection hole 26 in the embodiment is superimposed together, so that the air cap 22 rotates faster.Meanwhile, the airflow sprayed by the injection hole 26 is more balanced, and the self-rotation is more smooth.Of course, one injection hole 26 can also be arranged.The utility model can also be provided with two injection holes 26 on one air corner 24.

[0025] In conclusion, the above-mentioned content is only the embodiment of the utility model, and is only used for explaining the principle of the utility model, and is not used for limiting the protection scope of the utility model.Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A spray gun with a self-rotating nozzle, comprising a gun body and a nozzle assembly disposed at the front end of the gun body, wherein a needle plug and an air passage are disposed in the gun body, and the nozzle assembly comprises a nozzle mounted at the front end of the gun body, an air cap mounted on the nozzle, and a positioning ring for positioning the air cap, characterized in that: The wind cap has multiple air angles formed on its surface, and multiple airflow holes are formed on the inner surface of the air angles. One or more self-rotating injection holes are formed on the side surface of the air angles. The injection holes are connected to the air passages, and the airflow injected by the injection holes drives the wind cap to rotate around the nozzle.

2. A spray gun with a self-rotating nozzle as described in claim 1, characterized in that: The positioning ring has a slot, and the wind cap has a retaining ring formed on its outer periphery. The retaining ring is engaged in the slot and rotates along the slot.

3. A spray gun with a self-rotating nozzle as described in claim 2, characterized in that: It also includes a retaining ring, which is inserted into the positioning ring and abuts against the retaining ring.

4. A spray gun with a self-rotating nozzle as described in claim 2, characterized in that: A first circular support ring is provided between the retaining ring and the positioning ring.

5. A spray gun with a self-rotating nozzle as described in claim 2, characterized in that: A second circular support ring is provided between the wind cap and the nozzle.

6. A spray gun with a self-rotating nozzle as described in claim 1, characterized in that: The injection holes are provided on the same side of all the air angles.

7. A spray gun with a self-rotating nozzle as described in claim 1, characterized in that: There are two air angles, and two injection holes are provided on the side of each air angle.

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