CN109127182B

CN109127182B - Spray gun

Info

Publication number: CN109127182B
Application number: CN201710443580.5A
Authority: CN
Inventors: 简道宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-06-13
Filing date: 2017-06-13
Publication date: 2020-09-22
Anticipated expiration: 2037-06-13
Also published as: CN109127182A

Abstract

The invention discloses a spray gun, comprising: a spray gun body and a regulating valve. The spray gun body is provided with an air inlet channel, a first air outlet channel, a second air outlet channel and a mounting hole, and the mounting hole is communicated with the air inlet channel, the first air outlet channel and the second air outlet channel. The adjusting valve is mounted on the spray gun body and located in the mounting hole, the adjusting valve comprises a first operating part and a second operating part, the first operating part is used for moving and displacing relative to the spray gun body so as to adjust the flow of the air inlet channel or/and the first air outlet channel, and the second operating part is movably mounted on the first operating part and corresponds to the second air outlet channel so as to adjust the flow of the second air outlet channel, so that the convenience of operating the spray gun is improved.

Description

Spray gun

Technical Field

The present invention relates to spray guns, and more particularly to trim valves having a plurality of operating members.

Background

The function of the paint spray gun is mainly to apply the paint to the object to be coated by atomizing the paint with compressed gas. In order to meet various requirements (such as metal, carpentry, waiting coating materials for plastic products, coatings with different properties, finish coating, primary coating, etc.), most paint spray guns are provided with various adjusting components so that users can adjust the adjusting components according to their own requirements, such as adjusting the inlet flow of compressed gas, the area or shape of paint spray, etc.

Examples of the detailed structure include "Spray gun and access sources" of US 2013/0320110A 1, EP0706832B1 "Air operated Paint Spray gun", US 20120097762A 1 "Paint Spray gun", and the like. The body of the spray gun body of the prior proposals is provided with a knob type adjusting component at the position close to the holding part, so that a user can conveniently use a thumb to stir and adjust when holding. In addition, the body of the spray gun body of the prior cases is also provided with an adjusting component at the rear side for the user to operate other adjusting functions.

However, the adjusting function of these adjusting components is single and limited, and often requires the auxiliary operation of the other hand to adjust to meet the requirement, which is inconvenient in operation and use.

Disclosure of Invention

The invention aims to provide a spray gun which improves the convenience of the operation of the spray gun.

Based on the above, the present invention mainly adopts the following technical means to achieve the above object.

A spray gun, comprising: the spray gun body is provided with an air inlet flow channel, a first air outlet flow channel, a second air outlet flow channel and a mounting hole, and the mounting hole is communicated with the air inlet flow channel, the first air outlet flow channel and the second air outlet flow channel; and the adjusting valve is arranged on the spray gun body and is positioned in the mounting hole, the adjusting valve comprises a first operating part and a second operating part, the first operating part is used for moving and displacing relative to the spray gun body so as to adjust the flow of the air inlet channel or/and the first air outlet channel, and the second operating part is movably arranged on the first operating part and corresponds to the second air outlet channel so as to adjust the flow of the second air outlet channel.

Further, the regulating valve also comprises a valve seat, the valve seat is provided with a pivot groove, the first operating part comprises a cylinder body, and the cylinder body is pivoted in the valve groove of the valve seat.

Furthermore, the valve seat is provided with a first through hole and a second through hole which are communicated with the pivot groove, the first through hole and the second through hole are respectively communicated with the air inlet flow passage and the first air outlet flow passage, the cylinder body of the first operating element is provided with at least one flow through hole, and the flow through holes are staggered or communicated with the first through hole or the second through hole by pivoting the cylinder body.

Furthermore, the cylinder body is provided with a through hole, and the second operating part is movably arranged in the through hole in a penetrating way and used for moving from a closed position for closing the second air outlet flow passage to an open position for opening the second air outlet flow passage.

Furthermore, a screwing hole is formed in the valve seat and communicated with the valve groove, and the second operating part is screwed in the screwing hole.

Further, the first operating member includes an operating portion, the second operating member includes an operating end, and the operating portion and the operating end are located on the same side and adjacent to each other.

Furthermore, the operating end is a smooth surface adjacent to the operating part, and the operating part is slidably sleeved on the smooth surface.

Furthermore, a valve hole is formed at the adjacent position of the mounting hole and the second air outlet flow passage, the second operating element comprises a butting end opposite to the operating end, the butting end is used for closing or opening the valve hole, the butting end is provided with a lead bevel angle, and the angle of the lead bevel angle is between 77 degrees and 79 degrees.

Furthermore, the spray gun body comprises a holding part, a spray head and a body part, the air inlet channel is positioned on the holding part and extends along the length direction of the holding part, the body part is connected with the holding part and the spray head, the first air outlet channel and the second air outlet channel are respectively positioned on two opposite sides of the body part, the mounting hole is positioned at the position of the body part adjacent to the holding part, the spray head comprises a first nozzle part and a second nozzle part, the first air outlet channel is communicated with the first nozzle part, and the second air outlet channel is communicated with the second nozzle part.

By adopting the technical means, the invention can achieve the following effects:

1. the single regulating valve can have a plurality of regulating functions, thereby facilitating the switching regulation of users and improving the convenience of operation.

2. The first operating part comprises a pivotable cylinder body, and the structure is simple and easy to assemble and manufacture.

3. The second operation piece is arranged in the first operation piece in a penetrating mode, so that the whole structure is compact, and different operation modes are easy to switch.

4. The second operating piece is screwed in or screwed out through the screw thread, and the operation is stable and reliable.

5. The operating part of the first operating part and the operating end of the second operating part are positioned at the same side and are adjacent to each other, so that a user can perform fine adjustment operation by only using the thumb of one hand, and the convenience of switching operation is further improved.

6. The operating part of the first operating piece can be slidably sleeved on the smooth surface of the operating end of the second operating piece so as to reduce the operating resistance of the first operating piece.

7. The abutting end of the second operating piece can be provided with a bevel angle, and the angle of the bevel angle is between 77 degrees and 79 degrees, so that the fluidity of the compressed gas is improved, and the spraying effect can be improved.

8. The trim valve may be implemented without limitation to a paint spray gun, and may be implemented with other types of spray guns or other fluid control devices, for example.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is a schematic perspective exploded view of an embodiment of the present invention.

Fig. 3 is a schematic top sectional view of the embodiment of the invention.

FIG. 4 is an exploded view of a trim valve according to an embodiment of the present invention.

FIG. 5 is a plan view of a first embodiment of a regulating valve according to the present invention.

FIG. 6 is a plan view, cross-sectional view, and operation diagram of an adjusting valve according to an embodiment of the present invention.

FIG. 7 is a plan view, cross-sectional view, and schematic diagram illustrating operation of a regulating valve according to an embodiment of the present invention.

FIG. 8 is a first schematic cross-sectional view of a regulating valve according to an embodiment of the present invention, showing a corresponding inlet flow channel and a first outlet flow channel.

FIG. 9 is a second schematic cross-sectional view of an adjustment valve according to an embodiment of the invention, illustrating a corresponding inlet flow channel and a first outlet flow channel.

FIG. 10 is a schematic top cross-sectional view illustrating a second embodiment of the present invention.

[ notation ] to show

1 spray gun body 11 grip

111 air inlet flow channel 12 spray head

121 a first nozzle part 122 a second nozzle part

13 body 131 first outlet flow channel

132 second outlet flow channel 133 mounting hole

134 valve bore 14 paint supply

15 trigger 2 regulating valve

21 first operation element 210 operation part

2110. 2210 anti-slip pattern 211 cylinder

2111 first flow bore 2112 second flow bore

2113 perforation 212 actuator

213 connecting part 22 second operating part

220 smooth surface of operation end 2201

221 abutting end 222 bevel guide

23 valve seat 230 limiting groove

231 hinge groove 232 first through hole

233 second through hole 234 screw hole

24 first seal ring 25 second seal ring

26 third seal L is axial.

Detailed Description

The main function of the spray gun according to the invention will be clear from the following examples, combining the above technical features.

Referring to fig. 1, a spray gun according to an embodiment of the present invention includes a spray gun body 1 and a regulating valve 2 installed on the spray gun body 1. The spray gun body 1 comprises a holding part 11, a spray head 12 and a body part 13 connecting the holding part 11 and the spray head 12. The adjusting valve 2 is located at the body 13 adjacent to the holding part 11, so that the user can use the thumb to operate the adjusting valve when holding the adjusting valve.

Referring back to fig. 1, the spray gun body 1 of the present embodiment is mainly used for coating, and therefore, the spray gun body may further include a paint supplying portion 14, and the paint supplying portion 14 is used for connecting a paint tank, for example. Thus, when a trigger 15 of the spray gun body 1 is pressed and displaced to a predetermined position, the spray head 12 can spray paint accompanied by compressed gas, and the main mechanism is to be opened by the trigger 15 in conjunction with the movement of a valve member (e.g., a valve needle), which is common knowledge of those skilled in the art and is not the focus of the present invention, and for the sake of brevity, a detailed description thereof is omitted here. It should be noted that, in addition to the general paint spraying operation, the spray gun body 1 can also be used in practice to remove impurities such as sand and dust on the surface of an object by slightly pressing the trigger 15 and only jetting out the compressed gas.

Referring to fig. 2, in detail, the holding portion 11 has an inlet channel 111 extending along a length direction of the holding portion 11 for introducing external fluid (e.g., high pressure gas). The spray head 12 can be used to provide different spray paint types, for example, the spray head 12 can include a first nozzle portion 121 and a plurality of second nozzle portions 122, the first nozzle portion 121 is located at the center and has a circular hole shape in the present embodiment to provide spray paint with a circular area, the second nozzle portions 122 are located at the periphery of the first nozzle portion 121 to spray paint laterally, and can form spray paint with a long strip area in combination with the spray paint with the circular area, the spray paint types and the position relationship are merely exemplary and not limited thereto, and a shunt structure is provided inside the spray head 12 to respectively communicate the first nozzle portion 121 and the second nozzle portion 122, which is well known by those skilled in the art, so for simplicity and brevity, detailed description thereof is omitted herein.

Referring to fig. 2 in conjunction with fig. 3, the body 13 is connected to the holding portion 11 and the nozzle 12, the body 13 has a first air outlet channel 131, a second air outlet channel 132, and a mounting hole 133, the first air outlet channel 131 and the second air outlet channel 132 are respectively located at two opposite sides of the body 13, the mounting hole 133 is located at a position of the body 13 adjacent to the holding portion 11, the mounting hole 133 is communicated with the first air outlet channel 131, the second air outlet channel 132 and the air inlet channel 111, the first air outlet channel 131 is used for communicating the first nozzle portion 121, and the second air outlet channel 132 is used for communicating the second nozzle portion 122.

Referring to fig. 1 and fig. 3 again, the adjusting valve 2 includes a first operating member 21 and a second operating member 22, the first operating member 21 includes an operating portion 210, the second operating member 22 includes an operating end 220, and the operating portion 210 and the operating end 220 are adjacent to each other and located on the same side, so that the user can slightly move the position of the thumb for fine adjustment. In the embodiment, the operation portion 210 is a ring and surrounds the operation end 220, and the operation portion 210 and the operation end 220 may be provided with a plurality of

anti-slip threads

2110, 2210. Preferably, the operating end 220 is a smooth surface 2201 adjacent to the operating portion 210, and the operating portion 210 is slidably sleeved on the smooth surface 2201, so as to reduce the frictional resistance to the displacement of the operating portion 210.

Referring to fig. 2 in conjunction with fig. 3, in detail, in the embodiment, the adjusting valve 2 further includes a valve seat 23, the valve seat 23 can be mounted in the mounting hole 133 by screwing, for example, and the first operating member 21 and the second operating member 22 can be mounted on the spray gun body 1 by the valve seat 23. Specifically, the first operating member 21 includes a cylinder 211 and an actuating member 212, and the actuating member 212 and the cylinder 211 are fixedly connected to each other by a connecting member 213 to be regarded as a single body. The connecting member 213 penetrates the valve seat 23, and two ends of the connecting member 213 are respectively screwed, embedded, adhered, and the like to fixedly connect the actuating member 212 and the cylinder 211. The actuator 212 includes the operating portion 210, so that a user can move the cylinder 211 by pulling the actuator 212. The valve seat 23 has a pivot slot 231 for the cylinder 211 to pivot. Preferably, the valve seat 23 has a limiting groove 230, and the connecting member 213 is disposed in the limiting groove 230, so that the limiting groove 230 limits the displacement stroke of the connecting member 213.

Referring to fig. 2 in conjunction with fig. 4, in detail, the cylinder 211 extends along an axial direction, the cylinder 211 has at least one through

hole

2111, 2112 in a radial direction, and a through hole 2113 in the axial direction, in this embodiment, the cylinder 211 has a first through hole 2111 and a second through hole 2112, and the valve seat 23 has a first through hole 232 and a second through hole 233 communicating with the pivot slot 231. In the present embodiment, the first through hole 232 and the first flow through hole 2111 both have a first aperture; the second through hole 233 and the second through hole 2112 both have a second aperture, the first aperture being larger than the second aperture to provide sufficient adjustment stroke within the limited size of the cylinder 211. Referring to fig. 5 to 7, when the cylinder 211 pivots, the first through hole 2111 and the second through hole 2112 are staggered, partially communicated or completely communicated with the first through hole 232 and the second through hole 233 during the rotation process.

Referring to fig. 2 in conjunction with fig. 3, the second operating member 22 is movably inserted into the through hole 2113 of the cylinder 211. Specifically, the valve seat 23 has a screw hole 234 communicating with the pivot slot 231, and the second operating member 22 is screwed in the screw hole 234. It should be noted that, in order to provide a sufficient sealing effect, the trim valve 2 may be provided with a sealing assembly, for example, the trim valve 2 may further include a first sealing ring 24, a second sealing ring 25 and a third sealing ring 26, the first sealing ring 24 is configured to be sleeved on the periphery of the valve seat 23, the second sealing ring 25 is located between the valve seat 23 and the first operating member 21, and the third sealing ring 26 is located between the valve seat 23 and the second operating member 22.

Referring to fig. 8 and 9, when the valve seat 23 is mounted in the mounting hole 133, the first through hole 232 and the second through hole 233 of the valve seat 23 are respectively communicated with the inlet flow channel 111 and the first outlet flow channel 131. Therefore, when the cylinder 211 is rotated, the flow rates of the inlet flow channel 111 and the first outlet flow channel 131 can be respectively adjusted by the first through hole 2111 and the second through hole 2112 of the cylinder 211. The detailed operation can be referred to fig. 5 to fig. 7 and their corresponding paragraphs, which are not repeated herein. It should be noted that, in the embodiment, since the aperture of the first flow through hole 2111 is larger, the flow rates of the inlet flow channel 111 and the first outlet flow channel 131 can be controlled together in some cases, but the invention is not limited thereto. For example, the aperture of the second flow hole 2112 may be adjusted so that the second flow hole 2112 and the second flow hole 233 constantly maintain flow, and the adjustment may be performed only by the first flow hole 2111.

Referring to fig. 10 in conjunction with fig. 3, a valve hole 134 is formed at a position where the mounting hole 133 is adjacent to the second air outlet channel 132, the second operating element 22 includes an abutting end 221 opposite to the operating end 220, and the abutting end 221 is used for closing or opening the valve hole 134. When the second operating element 22 is rotated, the second operating element 22 is displaced along an axial direction L through the threaded hole 234 of the valve seat 23, so that a closed position of the second operating element 22, which closes the valve hole 134, is displaced to an open position, which opens the valve hole 134, and the flow rate of the second outlet flow channel 132 is controlled by the displacement. Preferably, the abutting end 221 has a bevel angle 222, and the angle of the bevel angle 222 is between 77 ° and 79 °. Preferably, the lead angle 222 is 78 °.

While the operation, use and efficacy of the present invention have been described in connection with the preferred embodiments, it is to be understood that the invention is not limited thereto, but rather, may be embodied in the form of various modifications, equivalents and changes within the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. A spray gun, comprising:

the spray gun body is provided with an air inlet flow channel, a first air outlet flow channel, a second air outlet flow channel and a mounting hole, and the mounting hole is communicated with the air inlet flow channel, the first air outlet flow channel and the second air outlet flow channel; and

the adjusting valve is mounted on the spray gun body and located in the mounting hole, the adjusting valve comprises a first operating part and a second operating part, the first operating part is used for moving and displacing relative to the spray gun body so as to adjust the flow of the air inlet channel or/and the first air outlet channel, and the second operating part is movably mounted on the first operating part and corresponds to the second air outlet channel so as to adjust the flow of the second air outlet channel.

2. The spray gun of claim 1, wherein: the regulating valve also comprises a valve seat, the valve seat is provided with a pivot groove, the first operating piece comprises a cylinder body, and the cylinder body is pivoted in the valve groove of the valve seat.

3. The spray gun of claim 2 wherein: the valve seat is provided with a first through hole and a second through hole which are communicated with the pivot groove, the first through hole and the second through hole are respectively communicated with the air inlet flow passage and the first air outlet flow passage, the cylinder body of the first operating element is provided with at least one flow through hole, and the flow through hole is staggered or communicated with the first through hole or the second through hole by pivoting the cylinder body.

4. A spray gun as claimed in claim 3, in which: the cylinder body is provided with a through hole, and the second operating part is movably arranged in the through hole in a penetrating mode and used for moving from a closed position for closing the second air outlet flow passage to an open position for opening the second air outlet flow passage.

5. The spray gun of claim 4 wherein: the valve seat is provided with a screwing hole which is communicated with the valve groove, and the second operating part is screwed in the screwing hole.

6. The spray gun of claim 5 wherein: the first operation piece comprises an operation part, the second operation piece comprises an operation end, and the operation part and the operation end are positioned on the same side and are adjacent to each other.

7. The spray gun of claim 6, wherein: the operating end is a smooth surface adjacent to the operating part, and the operating part is slidably sleeved on the smooth surface.

8. The spray gun of claim 6, wherein: the mounting hole and the second air outlet flow passage are adjacent to form a valve hole, the second operating element comprises a butting end opposite to the operating end, the butting end is used for closing or opening the valve hole, the butting end is provided with a guide bevel angle, and the angle of the guide bevel angle is between 77 degrees and 79 degrees.

9. The spray gun of claim 1, wherein: the spray gun body comprises a holding part, a spray head and a body part, the air inlet channel is located at the holding part and extends along the length direction of the holding part, the body part is connected with the holding part and the spray head, the first air outlet channel and the second air outlet channel are respectively located on two opposite sides of the body part, the mounting hole is located at the position, adjacent to the holding part, of the body part, the spray head comprises a first nozzle part and a second nozzle part, the first air outlet channel is communicated with the first nozzle part, and the second air outlet channel is communicated with the second nozzle part.