Electric spray gun body with improved air duct

Abstract

The utility model discloses an electric spray gun body with an improved air duct, which comprises a shell and a nozzle assembly arranged at the front end of the shell, the nozzle assembly comprises a nozzle arranged at the front end of a first inner tube, an air volume adjusting piece arranged at the front end of a first outer tube and an air cover, and a gap is formed between the inner side surface of the air cover and the outer peripheral surface of the nozzle. The inner circumferential face of the first outer bobbin, the outer circumferential face of the first inner bobbin and the gap form a first air flow channel, the nozzle is provided with a liquid outlet hole, the air cover is provided with a plurality of air outlet holes, the air volume adjusting piece is provided with a plurality of ventilation holes, and the air volume adjusting piece rotates in the circumferential direction of the first outer bobbin, so that the ventilation holes and the air outlet holes are completely overlapped or partially overlapped or completely staggered. And the inner peripheral surface of the first outer bobbin, the outer peripheral surface of the first inner bobbin, the ventilation holes and the air outlet holes form a second air flow channel. According to the gun body of the electric spray gun, a control valve in the prior art is replaced by the air volume adjusting piece, a formed fresh air channel is simple in structure, small in channel air resistance and higher in efficiency, and the mold production cost is low.

Description

Technical Field

[0001] The utility model relates to a gun body of an electric spray gun, in particular to a gun body of an electric spray gun with an improved air duct. Background Art

[0002] Chinese patent CN 211801734 U discloses an electric spray gun body with adjustable atomizing air volume, such as Figure 1 , including a shell, a spray head 2, a gun body 3 and a control valve 4, the shell includes a horizontal tube and a vertical tube 12, the horizontal tube includes an inner tube 111, an intermediate tube 117, an outer tube 113 and a connecting tube 116, the intermediate tube 117, the outer tube 113, and the inner tube 111 surround to form an inlet flow channel, an atomization flow channel is formed between the intermediate tube 117 and the outer tube 113, the connecting tube 116 passes through the outer tube 113 and the intermediate tube 117 and is connected to the inlet flow channel, and the connecting tube 116 is provided with an arc hole A; the control valve 4 includes a wind tube 41 and a screw cap 42, the inner end of the air cylinder 41 is an open end, and the outer end is a closed end. The inner end of the air cylinder 41 extends from the connecting pipe 116 into the inlet flow channel. The air cylinder 41 is provided with an arc hole B. The rotary cap 42 is rotated to make the air cylinder 41 rotate along the circumference of the connecting pipe. When the arc hole B coincides with the arc hole A, the air intake area is determined by the overlapping area of ​​the arc hole B and the arc hole A. When the arc hole B is completely misaligned with the arc hole A, the ventilation channel is closed. Therefore, the air intake volume can be adjusted according to the overlapping area of ​​the arc hole B and the arc hole A to achieve the adjustment of the nozzle atomization effect.

[0003] The above patented product has the following problems: the control valve for adjusting the air volume has a complex structure and the mold production cost is high. At the same time, the gun body forms a small channel through the arc hole A of the connecting pipe 116 and the arc hole B of the air cylinder 41 to control the air volume. The small channel causes large wind resistance, making the efficiency of the entire electric spray gun relatively low. Utility Model Content

[0004] In view of this, an object of the present invention is to provide an electric spray gun body with an improved air duct to solve one or more of the above-mentioned prior art problems.

[0005] To achieve the above-mentioned purpose, the utility model provides an improved electric spray gun body with an air duct, comprising a shell and a nozzle assembly arranged at the front end of the shell, the shell comprising a horizontally arranged first tube and a second tube vertically connected to the first tube, the first tube comprising a coaxially arranged first outer tube and a first inner tube, the first outer tube is sleeved on the first inner tube, the nozzle assembly comprises a nozzle installed at the front end of the first inner tube, an air volume adjustment member and an air hood arranged at the front end of the first outer tube, a gap is formed between the inner side surface of the air hood and the outer peripheral surface of the nozzle, the inner peripheral surface of the first outer tube, the outer peripheral surface of the first inner tube and the gap form a first air flow channel, the nozzle is provided with a liquid outlet, the air hood is provided with a plurality of air outlets, the air volume adjustment member is provided with a plurality of ventilation holes, the air volume adjustment member rotates along the circumference of the first outer tube so that the ventilation holes are completely overlapped, partially overlapped or completely misaligned with the air outlet, and the inner peripheral surface of the first outer tube, the outer peripheral surface of the first inner tube, the ventilation holes and the air outlet form a second air flow channel.

[0006] In some embodiments, a gas pipeline and a liquid pipeline are provided in the second tube, the gas pipeline is connected to the first outer tube, and the liquid pipeline is connected to the first inner tube.

[0007] In some embodiments, an annular connector is further included, which is installed on the first outer tube. The outer surface of the annular connector is provided with an external thread, and the inner surface of the mounting portion of the air hood is provided with an internal thread, and the external thread and the internal thread are meshed and connected.

[0008] In some embodiments, the air hood includes two convex portions protruding from left and right ends of the front end and having air outlet holes communicating with the second air flow channel and capable of ejecting air obliquely inwardly and forwardly.

[0009] In some embodiments, the air volume adjusting member includes an annular portion rotatable along the circumference of the first outer tube and an adjusting portion disposed on an outer side wall of the annular portion.

[0010] In some embodiments, it further includes a needle column disposed on the first inner tube and a connecting portion disposed on the lower portion of the second tube and connected to a material storage barrel.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The gun body of the electric spray gun with improved air duct uses an air volume adjustment member to replace the control valve of the prior art, so that the formed new air duct has a simple structure, small channel wind resistance, higher efficiency, and low mold production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a structural schematic diagram of the gun body of the electric spray gun in the background technology of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the gun body of an electric spray gun in one embodiment of the utility model;

[0015] Figure 3 This is a front view of the gun body of an electric spray gun according to an embodiment of the utility model;

[0016] Figure 4 For this utility model Figure 3 AA view;

[0017] Figure 5 A top view of the gun body of the electric spray gun according to an embodiment of the utility model;

[0018] Figure 6 For this utility model Figure 5 BB direction view;

[0019] Figure 7 This is a front view of the gun body of an electric spray gun according to an embodiment of the utility model;

[0020] Figure 8 For this utility model Figure 7 CC view. DETAILED DESCRIPTION

[0021] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1

[0023] like Figure 2 The electric spray gun body with improved air duct provided in this embodiment includes a shell 10, a nozzle assembly 20 arranged at the front end of the shell 10, a needle column 30 arranged at the first inner tube 12, and a connecting part 40 arranged at the lower part of the second tube 13 and connected to the material storage barrel.

[0024] like Figures 3 to 6 ,

[0025] The shell 10 includes a horizontally arranged first tube and a second tube 13 vertically connected to the first tube, the first tube includes a coaxially arranged first outer tube 11 and a first inner tube 12, the first outer tube 11 is sleeved on the first inner tube 12, the nozzle assembly 20 includes a nozzle 21 installed at the front end of the first inner tube 12, an air volume adjustment member arranged at the front end of the first outer tube 11, an air hood 22 and an annular connector 24, the annular connector 24 is installed on the first outer tube 11, the outer surface of the annular connector 24 is provided with an external thread, the inner surface of the mounting portion of the air hood 22 is provided with an internal thread, the external thread and the internal thread are meshed and connected, a gap is formed between the inner side surface of the air hood 22 and the outer peripheral surface of the nozzle 21, the inner peripheral surface of the first outer tube 11, the outer peripheral surface of the first inner tube 12 and a gap to form a first air flow channel, the nozzle 21 is provided with a liquid outlet hole 211, the air hood 22 is provided with a plurality of air outlet holes 221, the air hood 22 includes two convex parts 222 protruding from the left and right ends of the front end, and penetrated with air outlet holes 221 which are connected with the second air flow channel and can spray air obliquely inward and forward, the air volume regulating member is provided with a plurality of ventilation holes 231, the air volume regulating member includes an annular part 232 which can rotate along the circumference of the first outer tube 11 and an regulating part 233 arranged on the outer side wall of the annular part 232, the air volume regulating member rotates along the circumference of the first outer tube 11, so that the ventilation holes 231 and the air outlet holes 221 are completely overlapped, partially overlapped or completely misaligned, and the inner circumferential surface of the first outer tube 11, the outer circumferential surface of the first inner tube 12, the ventilation holes 231 and the air outlet holes 221 form a second air flow channel.

[0026] like Figure 7 and 8 A gas pipeline 131 and a liquid pipeline 132 are provided in the second tube 13 . The gas pipeline 131 is connected to the first outer tube 11 , and the liquid pipeline 132 is connected to the first inner tube 12 .

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] The gun body of the electric spray gun with improved air duct uses an air volume adjustment member to replace the control valve of the prior art, so that the formed new air duct has a simple structure, small channel wind resistance, higher efficiency, and low mold production cost.

[0029] Finally, it should be noted that: technicians in this industry should understand that the utility model is not limited to the above-mentioned implementation cases. The above-mentioned embodiments and descriptions only illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements must fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. The gun body of the electric spray gun with improved air duct is characterized in that: The invention comprises a shell (10) and a nozzle assembly (20) arranged at the front end of the shell (10), wherein the shell (10) comprises a first tube arranged horizontally and a second tube (13) vertically connected to the first tube, wherein the first tube comprises a first outer tube (11) and a first inner tube (12) arranged coaxially, wherein the first outer tube (11) is sleeved on the first inner tube (12), and the nozzle assembly (20) comprises a nozzle (21) installed at the front end of the first inner tube (12), an air volume adjustment member arranged at the front end of the first outer tube (11), and an air cover (22), wherein the inner side surface of the air cover (22) is in contact with the outer peripheral surface of the nozzle (21). A gap is formed between the first outer tube (11), the inner circumferential surface of the first inner tube (12) and the gap forms a first air flow channel, the nozzle (21) is provided with a liquid outlet hole (211), the air cover (22) is provided with a plurality of air outlet holes (221), the air volume adjustment member is provided with a plurality of ventilation holes (231), the air volume adjustment member rotates along the circumference of the first outer tube (11) so that the ventilation holes (231) and the air outlet holes (221) are completely overlapped, partially overlapped or completely misaligned, and the inner circumferential surface of the first outer tube (11), the outer circumferential surface of the first inner tube (12), the ventilation holes (231) and the air outlet holes (221) form a second air flow channel.

2. The electric spray gun body with improved air duct as claimed in claim 1, characterized in that: A gas pipeline (131) and a liquid pipeline (132) are provided in the second tube (13); the gas pipeline (131) is connected to the first outer tube (11), and the liquid pipeline (132) is connected to the first inner tube (12).

3. The electric spray gun body with improved air duct as claimed in claim 1, characterized in that: It also includes an annular connecting piece (24), which is installed on the first outer tube (11), and the outer surface of the annular connecting piece (24) is provided with an external thread, and the inner surface of the mounting portion of the air cover (22) is provided with an internal thread, and the external thread and the internal thread are meshed and connected.

4. The electric spray gun body with improved air duct as claimed in claim 1, characterized in that: The air cover (22) comprises two convex parts (222) protruding from the left and right ends of the front end and provided with air outlet holes (221) communicating with the second air flow channel and capable of spraying air obliquely inwardly and forwardly.

5. The electric spray gun body with improved air duct as claimed in claim 1, characterized in that: The air volume adjustment member comprises an annular portion (232) rotatable along the circumference of the first outer tube (11) and an adjustment portion (233) arranged on an outer side wall of the annular portion (232).

6. The electric spray gun body with improved air duct as claimed in claim 1, characterized in that: It also includes a needle column (30) arranged on the first inner tube (12) and a connecting portion (40) arranged on the lower part of the second tube (13) and connected to a material storage barrel.

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