CN217120594U

CN217120594U - Hand-held type spray gun

Info

Publication number: CN217120594U
Application number: CN202220213784.6U
Authority: CN
Inventors: 李祥锦
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-08-05
Anticipated expiration: 2032-01-26

Abstract

The utility model discloses a hand-held type spray gun, including the rifle body (1), the rifle body (1) in be equipped with gas passage (101) interior movable mounting have a spray needle, the spray needle with gas passage (101) inner wall between be equipped with seal assembly, seal assembly include sealing member (3) and sealing washer group, sealing member (3) and sealing washer group all overlap in the spray needle outside and this sealing member (3) tight fit be in the inner wall of gas passage (101) on, one side of sealing member (3) be equipped with embedded groove (301), sealing washer group tight fit be in embedded groove (301). The spray gun has good sealing effect and can effectively avoid the coating from flowing out of the gun body.

Description

Hand-held type spray gun

Technical Field

The utility model relates to a spraying tool technical field more exactly relates to a hand-held type spray gun.

Background

The spray gun is an important coating tool which can spray paint in a mist shape to achieve the purpose of uniform coloring, and is widely applied in the fields of cosmetics industry, decoration design, outdoor advertising, publishing printing, movie animation and the like. The spray gun comprises a gun body and a spray head assembly, wherein the spray head assembly is arranged at the front end of the gun body. The gun body is internally provided with a gas channel and a coating channel. The sprayer assembly is internally provided with an air chamber which is communicated with the air channel, and the air channel can drive the paint in the paint channel to spray in a fog shape when being ventilated. The gas channel is internally provided with a spray needle, the end part of the spray needle extends into the spray head assembly, and the spray needle can move back and forth in the gas channel under the control of a trigger so as to control the opening or closing of the gas channel. Because the coating passageway communicates with the gas passage each other, in order to avoid coating outflow rifle body, will set up the sealing member between rifle body inner wall and spray needle and seal between the two. But the sealing effect of prior art's sealing member is relatively poor, and the coating still flows out from the gap between sealing member and rifle body inner wall and the spray needle easily to influence the result of use of spray gun, greatly reduced user's experience feels.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a hand-held type spray gun, this spray gun is sealed effectual, can effectively avoid coating to flow from the rifle body.

The technical solution of the utility model is that, a hand-held type spray gun with following structure is provided, which comprises a gun body, the internal gas passage that is equipped with of rifle the gas passage in movable mounting have the needle, the needle with the gas passage inner wall between be equipped with seal assembly, seal assembly include sealing member and sealing washer group, sealing member and sealing washer group all overlap in the needle outside and this sealing member tight fit be in the inner wall of gas passage on, one side of sealing member be equipped with the embedded groove, sealing washer group tight fit be in the embedded groove in.

After the structure more than adopting, the utility model discloses a hand-held type spray gun compares with prior art, has following advantage:

because the utility model discloses a seal assembly of hand-held type spray gun includes sealing member and sealing washer group, sealing member and sealing washer group all overlap in the spray needle outside and this sealing member tight fit be in gas passage's inner wall on, one side of sealing member be equipped with the embedded groove, sealing washer group tight fit be in the embedded groove in. The spray gun has good sealing effect and can effectively avoid the coating from flowing out of the gun body.

As an improvement, the inner wall of the gas channel is provided with a limit step, one end of the sealing ring group is exposed outside the embedded groove, and the end of the sealing ring group is abutted against the step surface of the limit step. After adopting this kind of structure, the sealing member tight fit is in the gas passage, and the terminal surface of sealing washer group supports on the step face of spacing step, and seal assembly is great with the inside sealing area of gas passage, and sealed effect is better.

As an improvement, the end part of the sealing element close to the limiting step is provided with a guide surface. After adopting this kind of structure, make things convenient for the sealing member to pack into in the gas passage through the spigot surface.

As an improvement, the sealing ring group comprises a first sealing ring and a second sealing ring, a first groove is arranged on the end surface of the first sealing ring close to the second sealing ring, and a second groove is arranged on the end surface of the second sealing ring close to the first sealing ring; the first sealing ring and the second sealing ring are mutually and closely abutted, and the first groove and the second groove are spliced to form a first accommodating cavity. After adopting this kind of structure, also can get into first holding intracavity if reveal a bit between first sealing washer and the second sealing washer, the air current in the rethread gas channel is retrieved and is spouted away for this spray gun is sealed effectual, can effectively avoid coating to flow out from the rifle body.

As an improvement, one side of the first sealing ring, which is far away from the second sealing ring, is abutted against the step surface of the limiting step. After adopting this kind of structure, simple structure, the equipment is convenient.

As an improvement, the sealing ring group further comprises a third sealing ring, and the third sealing ring is abutted against one side, far away from the first sealing ring, of the second sealing ring; a third groove is formed in one side, close to the second sealing ring, of the third sealing ring, and a second accommodating cavity is formed between the third groove and the end face of the second sealing ring; the end face, far away from the second sealing ring, of the third sealing ring abuts against the bottom of the embedded groove. After adopting this kind of structure, increase the third sealing washer for sealed effect is better between needle and the air current passageway inner wall, and the liquid of leaking can get into the second holding intracavity between second sealing washer and the third sealing washer, can be retrieved by the air current in the air current passageway simultaneously and spout away, increases the checkpoint, makes the sealed effect of spray gun better.

As an improvement, the inner walls of the first groove, the second groove and the third groove are all conical surfaces.

Drawings

Fig. 1 is a schematic perspective view of the handheld spray gun of the present invention.

Fig. 2 is a schematic view of an assembly structure of the needle and the sealing assembly of the handheld spray gun of the present invention.

Fig. 3 is an exploded schematic view a of the sealing assembly of the handheld spray gun of the present invention.

Fig. 4 is an exploded view B of the sealing assembly of the hand-held spray gun of the present invention.

Fig. 5 is a schematic view of a part of the structure of the gun body of the hand-held spray gun of the present invention.

Fig. 6 is a schematic sectional view of the hand-held spray gun of the present invention.

Shown in the figure: 1. the gun body, 101, gas passage, 102, spacing step, 2, shower nozzle subassembly, 3, sealing member, 301, embedded groove, 302, guiding surface, 4, first sealing washer, 401, first plane, 402, first recess, 5, second sealing washer, 501, second plane, 502, second recess, 6, third sealing washer, 601, third plane, 602, third recess, 7, first holding chamber, 8, second holding chamber.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification.

In the drawings, the thickness, size, and shape of an object have been slightly exaggerated for convenience of explanation. The figures are purely diagrammatic and not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "including," and/or "containing," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

As shown in fig. 1, the application discloses a handheld spray gun, which comprises a gun body 1 and a spray head assembly 2, wherein the spray head assembly 2 is installed at one end of the gun body 1.

The gun body 1 is internally provided with a gas channel 101 and a coating channel. The spray head assembly 2 is internally provided with an air chamber which is communicated with the air channel 101, and the air channel 101 can drive the paint in the paint channel to spray in a mist shape when being ventilated. The gas channel 101 is provided with a spray needle, the tip end of the spray needle extends into the spray head assembly 2, and the spray needle can move back and forth in the gas channel 101 under the control of a trigger so as to control the opening or closing of the gas channel 101.

As shown in fig. 2 to 6, a sealing assembly is disposed between the needle and the inner wall of the gas passage 101, and the sealing assembly includes a sealing member 3 and a sealing ring set. The sealing member 3 is a cylindrical structure with a through hole in the middle, and one end of the sealing member 3 is provided with an embedded groove 301. The sealing ring group comprises a first sealing ring 4, a second sealing ring 5 and a third sealing ring 6. The end face of one end of the first sealing ring 4 is a first plane 401, and the end face of the other end of the first sealing ring 4 is provided with a first groove 402. The end face of one end of the second seal ring 5 is a second plane 501, and the end face of the other end of the second seal ring 5 is provided with a second groove 502. The end face of one end of the third seal ring 6 is a third plane 601, and a third groove 602 is arranged on the end face of the other end of the third seal ring 6. The inner walls of the first groove 402, the second groove 502 and the third groove 602 are all conical surfaces. The first sealing ring 4, the second sealing ring 5 and the third sealing ring 6 are tightly matched in the embedded groove 301. The first sealing ring 4 and the second sealing ring 5 are abutted against each other, and the first groove 402 and the second groove 502 are spliced to form a first accommodating cavity 7. A third groove 602 is formed in one side, close to the second sealing ring 5, of the third sealing ring 6, and a second accommodating cavity 8 is formed between the third groove 602 and the second plane 501 of the second sealing ring 5; the third plane 601 of the third sealing ring 6 abuts against the bottom of the insertion groove 301. The end of the first sealing ring 4 provided with the first plane 401 is exposed outside the embedded groove 301.

The inner wall of the gas channel 101 is provided with a limiting step 102, the first sealing ring 4, the second sealing ring 5, the third sealing ring 6 and the sealing element 3 are all sleeved outside the spray needle, the limiting step 102 is tightly matched on the inner wall of the gas channel 101, and the first plane 401 of the first sealing ring 4 abuts against the step surface of the limiting step 102. The end of the sealing element 3 close to the limit step 102 is provided with a guide surface 302.

Claims

1. The utility model provides a hand-held type spray gun, includes the rifle body (1), the rifle body (1) in be equipped with gas passage (101) in movable mounting have a spray needle, its characterized in that: the spray needle with gas passage (101) inner wall between be equipped with seal assembly, seal assembly include sealing member (3) and sealing washer group, sealing member (3) and sealing washer group all overlap in the spray needle outside and this sealing member (3) tight fit be in the inner wall of gas passage (101) on, one side of sealing member (3) be equipped with embedded groove (301), sealing washer group tight fit be in embedded groove (301) in.

2. The hand-held spray gun of claim 1, wherein: the inner wall of the gas channel (101) is provided with a limiting step (102), one end of the sealing ring group is exposed out of the embedded groove (301), and the end of the sealing ring group is abutted against the step surface of the limiting step (102).

3. The hand-held spray gun of claim 2, wherein: the end part of the sealing element (3) close to the limiting step (102) is provided with a guide surface (302).

4. The hand-held spray gun of claim 2, wherein: the sealing ring group comprises a first sealing ring (4) and a second sealing ring (5), a first groove (402) is formed in the end face, close to the second sealing ring (5), of the first sealing ring (4), and a second groove (502) is formed in the end face, close to the first sealing ring (4), of the second sealing ring (5); the first sealing ring (4) and the second sealing ring (5) are abutted against each other, and the first groove (402) and the second groove (502) are spliced to form a first accommodating cavity (7).

5. The hand-held spray gun of claim 4, wherein: one side of the first sealing ring (4) far away from the second sealing ring (5) is abutted against the step surface of the limiting step (102).

6. The hand-held spray gun of claim 5, wherein: the sealing ring group also comprises a third sealing ring (6), and the third sealing ring (6) is abutted against one side, far away from the first sealing ring (4), of the second sealing ring (5); a third groove (602) is formed in one side, close to the second sealing ring (5), of the third sealing ring (6), and a second accommodating cavity (8) is formed between the third groove (602) and the end face of the second sealing ring (5); the end face, far away from the second sealing ring (5), of the third sealing ring (6) abuts against the bottom of the embedded groove (301).

7. The hand-held spray gun of claim 6, wherein: the inner walls of the first groove (402), the second groove (502) and the third groove (602) are all conical surfaces.