Electric spray gun with multi-layer filtering structure

Abstract

The utility model discloses an electric spray gun with a multi-layer filtering structure, which comprises a machine body, a gun head connected with the machine body and a grip connected with the machine body, the machine body comprises a shell and a motor assembly arranged at the rear part of the shell, an air inlet is arranged at the rear end of the shell, and an air outlet is arranged at the rear end of the shell. And at least two layers of filter screens are arranged at the air inlet. According to the utility model, multiple layers of filter screens are arranged at the air inlet, so that the possibility that foreign matters enter the motor is greatly reduced, and safe and reliable operation of the motor is guaranteed.

Description

Technical Field

[0001] The utility model relates to an electric spray gun, in particular to an electric spray gun with a multi-layer filtering structure. Background Art

[0002] In the prior art, for example, the utility model patent with Chinese patent number ZL201020113233.X, published on December 29, 2010, discloses an electric spray gun, including a housing, a body, a gun holder, and a spray pot. The rear end of the body is connected to the housing, one side of the body is connected to the gun holder, the lower end of the gun holder is connected to the spray pot, a motor with a fan blade is arranged in the housing, the rear end of the housing is connected to a rear cover, the rear cover is provided with an air inlet, and the front end of the body is provided with a spray head and a nozzle. In the above scheme, the motor assembly is wrapped by the housing, and the air inlet opening position is very close to the air inlet position of the motor, which can easily cause foreign matter to enter the air inlet of the motor, causing the motor to get stuck and other faults. What's worse, foreign matter flies out with the high-speed rotating blades of the motor, causing injuries. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the above-mentioned prior art and provide an electric spray gun with a multi-layer filtering structure which is safe and reliable and reduces the entry of foreign matter.

[0004] According to the utility model, an electric spray gun with a multi-layer filtering structure includes a body, a gun head connected to the body, and a handle connected to the body. The body includes a shell and a motor assembly installed at the rear of the shell. The rear end of the shell is provided with an air inlet, and at least two layers of filter screens are provided at the air inlet.

[0005] The electric spray gun with a multi-layer filtering structure provided by the utility model also has the following auxiliary technical features:

[0006] It further includes that the distance between the two layers of the filter screen is 10mm to 25mm.

[0007] It further includes that the filter includes a first filter and a second filter, a rear cover is provided at the rear end of the shell, the first filter is installed on the rear cover, and the second filter is installed on the air inlet of the shell.

[0008] It further includes that the first filter screen is a mesh filter screen, and the second filter screen is an arc-shaped hole filter screen.

[0009] It further includes that a plug-in column is provided at the rear end of the gun head, a plug-in hole is provided at the front end of the body, the plug-in column is inserted into the plug-in hole, a plurality of positioning ribs are provided on the outer wall of the plug-in column, a plurality of limiting grooves are provided on the inner wall of the plug-in hole, and the positioning ribs are inserted into the limiting grooves.

[0010] It further includes that a plurality of forwardly protruding ear guards are formed at the front end of the body, the ear guards are tightly attached to the plug-in column, and a limiting groove is formed on the inner wall of the ear guard, and the limiting groove is connected to the limiting groove.

[0011] It further includes that a material pot joint is arranged at the middle part of the gun head, a supporting part is arranged on the material pot joint, a supporting member is arranged on the handle, and the supporting member is connected to the supporting part.

[0012] Compared with the prior art, the electric spray gun with a multi-layer filtering structure provided by the utility model has the following advantages: the utility model sets a multi-layer filtering net at the air inlet, which greatly reduces the possibility of foreign matter entering the motor and ensures the safe and reliable operation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the utility model.

[0014] Figure 2 It is a cross-sectional view of the utility model.

[0015] Figure 3 It is a three-dimensional exploded view of the utility model.

[0016] Figure 4 It is a three-dimensional diagram of the machine body in the utility model. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the scheme in the utility model, preferred embodiments are given below and described in detail with reference to the accompanying 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.

[0018] like Figures 1 to 4As shown, the utility model provides an electric spray gun with a multi-layer filtering structure, including a body 1, a gun head 2 connected to the body 1 and a handle 3 connected to the body 1, the body 1 includes a shell 11 and a motor assembly 12 installed at the rear of the shell 11, the rear end of the shell 11 is provided with an air inlet, and at least two layers of filter screens 5 are provided at the air inlet. The motor assembly 12 in the utility model includes a motor and an air flow generating device driven by the motor, such as a fan. Thereby, the motor assembly 12 can generate a high-pressure airflow, which flows into the atomization structure in the gun head to atomize materials such as paint. The motor assembly, the gun head and the atomization structure can all adopt mature products in the market. The body 1 in the utility model is also connected to a storage tank 4, which stores materials that need to be atomized. The handle 3 is provided with an operating mechanism such as a trigger, and is also connected to a power cord or installed with a lithium battery. The main improvement of the utility model is that a multi-layer filter screen 5 is provided at the air inlet of the shell, which greatly reduces the possibility of foreign matter entering the motor and ensures the safe and reliable operation of the motor.

[0019] See also Figures 1 to 4 In the above embodiment of the utility model, the distance between the two layers of the filter screen 5 is 10 mm to 25 mm. In this embodiment, it is 17 mm. The above spacing distance can better improve the filtering effect, making it difficult for foreign matter to enter the motor.

[0020] See also Figures 1 to 4 In the above embodiment of the utility model, the filter screen 5 further includes a first filter screen 51 and a second filter screen 52, a rear cover 53 is provided at the rear end of the housing 11, the first filter screen 51 is installed on the rear cover 53, and the second filter screen 52 is installed on the air inlet of the housing 1. The utility model sets the first filter screen 51 on the rear cover 53, which is convenient for installation and cleaning of the two filter screens and maintenance.

[0021] See also Figures 1 to 4 In the above embodiment of the utility model, the first filter screen 51 is a mesh filter screen, and the second filter screen 52 is an arc-shaped filter screen. The use of two layers of filter screens with different structures can better filter and ensure the passage of airflow.

[0022] See also Figures 1 to 4In the above embodiment given by the utility model, it further includes that the rear end of the gun head 2 is provided with a plug-in column 21, the front end of the body 1 is provided with a plug-in hole 13, the plug-in column 21 is inserted into the plug-in hole 13, the outer wall of the plug-in column 21 is provided with a plurality of positioning ribs 22, the inner wall of the plug-in hole 13 is provided with a plurality of limiting grooves 14, the positioning ribs 22 are inserted into the limiting grooves 14. The outer wall of the plug-in column 21 is provided with a plurality of positioning ribs 22, the inner wall of the plug-in hole 13 is provided with a plurality of limiting grooves 14, the positioning ribs 22 are inserted into the limiting grooves 14. After the gun head 2 and the body 1 in the prior art are connected, since the connecting part between the plug-in column 21 and the plug-in hole 13 is short, it is easy to shake up and down, left and right, and it is also easy to fall off. The utility model adds the connection structure of the positioning rib 22 and the limiting groove 14, and realizes a double connection structure, that is, on the basis of the connection and cooperation between the plug-in column 21 and the plug-in hole 13, the connection structure of the positioning rib 22 and the limiting groove 14 is added. Not only can the gun head be limited, but also the gun head can be ensured not to shake up and down or left and right, thereby improving the stability of the connection between the gun head 2 and the body 1.

[0023] See also Figures 1 to 4 In the above embodiment of the utility model, it further includes that the front end of the body 1 is formed with a plurality of forwardly protruding ears 15, and the ears 15 are closely attached to the plug-in column 21. In this embodiment, there are two ears 15, which are respectively located on the left and right sides. The ears 15 can hold the plug-in column 21, reduce the left and right shaking of the gun head 2, and improve the stability of the connection. The whole of the ear 15 is arc-shaped, and its curvature is consistent with the outer wall of the plug-in column 21, so the ear 15 can hold the plug-in column 21 tightly.

[0024] See also Figures 1 to 4 In the above embodiment of the utility model, it further includes that a material pot joint 23 is provided in the middle of the gun head 2, a support portion 24 is provided on the material pot joint 23, and a support member 31 is provided on the handle 3, and the support member 31 is connected to the support portion 24. The material pot joint 23 is connected to the material storage tank 4. Since the material storage tank 4 has a large weight, the gun head 2 is subjected to a large downward gravity. The matching structure of the support member 31 and the support portion 24 increases the support points and reduces the influence of the uneven force on the connection matching structure of the gun head 2 to the plug column 21 and the plug hole 13.

[0025] See also Figures 1 to 4 In the above embodiment of the utility model, the support portion 24 is further provided with a notch 25, the support member 31 is provided with a plug 32, and the plug 32 is inserted into the notch 25. The above structure is not only more stable in connection, but also more convenient for assembly and disassembly.

[0026] See also Figures 1 to 4 In the above embodiment of the utility model, a limiting groove 16 is further formed on the inner wall of the ear guard 15, and the limiting groove 16 is connected to the limiting groove 14. Thus, the connection and matching length of the positioning rib 22 is increased, and the stability of the gun head 2 and the body 1 is further improved.

[0027] See also Figures 1 to 4 In the above embodiment of the utility model, a card block 26 is further formed on the outer wall of the plug-in column 21, and a card interface 17 is provided in the plug-in hole 13, and the card block 26 is inserted into the card interface 17. The card block 26 and the card interface 17 play a locking role, so that the machine body 1 and the gun head 2 can be quickly disassembled and assembled.

[0028] In summary, the above contents are only embodiments of the present invention, which are only used to illustrate the principle of the present invention, and are not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electric spray gun with a multi-layer filtering structure, comprising a body, a gun head connected to the body, and a handle connected to the body, the body comprising a shell and a motor assembly mounted at the rear of the shell, the rear end of the shell is provided with an air inlet, characterized in that: At least two layers of filter screens are arranged at the air inlet.

2. The electric spray gun with a multi-layer filtering structure as claimed in claim 1, characterized in that: The distance between the two layers of filter screens is 10 mm to 25 mm.

3. The electric spray gun with a multi-layer filtering structure as claimed in claim 1, characterized in that: The filter screen includes a first filter screen and a second filter screen. A rear cover is provided at the rear end of the shell. The first filter screen is installed on the rear cover, and the second filter screen is installed on the air inlet of the shell.

4. The electric spray gun with a multi-layer filtering structure as claimed in claim 3, characterized in that: The first filter screen is a mesh filter screen, and the second filter screen is an arc-shaped hole filter screen.

5. The electric spray gun with a multi-layer filtering structure as claimed in claim 1, characterized in that: A plug-in column is provided at the rear end of the gun head, and a plug-in hole is provided at the front end of the body. The plug-in column is inserted into the plug-in hole. A plurality of positioning ribs are provided on the outer wall of the plug-in column, and a plurality of limiting grooves are provided on the inner wall of the plug-in hole. The positioning ribs are inserted into the limiting grooves.

6. The electric spray gun with a multi-layer filtering structure as claimed in claim 5, characterized in that: A plurality of forwardly protruding ear guards are formed on the front end of the machine body, the ear guards are closely attached to the plug-in posts, and a limiting groove is formed on the inner wall of the ear guard, and the limiting groove is connected to the limiting groove.

7. The electric spray gun with a multi-layer filtering structure as claimed in claim 5, characterized in that: A material pot joint is arranged in the middle of the gun head, a supporting part is arranged on the material pot joint, a supporting member is arranged on the handle, and the supporting member is connected to the supporting part.

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