CN206316939U - A kind of non-return spray gun - Google Patents
A kind of non-return spray gun Download PDFInfo
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- CN206316939U CN206316939U CN201621308107.3U CN201621308107U CN206316939U CN 206316939 U CN206316939 U CN 206316939U CN 201621308107 U CN201621308107 U CN 201621308107U CN 206316939 U CN206316939 U CN 206316939U
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- hole
- valve spool
- spray gun
- gun body
- valve
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Abstract
The utility model is related to lance technology field, in particular disclose a kind of non-return spray gun, including gun body and it is installed in the air nozzle connector of gun body, gun body is provided with first through hole and the second through hole, air nozzle connector is provided with the third through-hole connected with first through hole, elastic component and antireverse valve spool are equiped between gun body and air nozzle connector, antireverse valve spool is used to block third through-hole, and the two ends of elastic component abut gun body and antireverse valve spool respectively；When actually used, source of the gas is connected with air nozzle connector, the sand source for supplying sand water liquid is connected with the second through hole, after source of the gas is opened, antireverse valve spool compression elastic piece under the extruding of gases at high pressure so that gas circuit is opened, you can spray sand water liquid from first through hole；After source of the gas is closed, elastic component related antireverse valve spool under elastic force effect sets back so that antireverse valve spool blocks third through-hole, prevents sand water liquid from blowing back into third through-hole and then blocks third through-hole, it is ensured that spray gun can be used normally.
Description
Technical field
The utility model is related to lance technology field, in particular discloses a kind of non-return spray gun.
Background technology
In the production process of product, it is often necessary to carry out blasting treatment to product, it is necessary to by spray gun and Sha Yuan during sandblasting
And source of the gas connection, the sand grains or sand water liquid for being provided sand source using gases at high pressure are through lance ejection on the surface of product.Due to
The design structure of existing spray gun is unreasonable, after sandblasting operation stops, and the sand grains or sand water liquid in spray gun can flow backwards blocking gas
Source inlet, and then cause spray gun from normally using.
The content of the invention
In order to overcome shortcoming and defect present in prior art, the purpose of this utility model is to provide a kind of non-return spray
Rifle, effectively prevents sand water liquid from blowing back into the third through-hole of air nozzle connector and then blocks third through-hole.
To achieve the above object, a kind of non-return spray gun of the present utility model, including gun body and be installed in the valve of gun body and connect
Head, gun body is provided with first through hole and the second through hole for connect with first through hole, and air nozzle connector is provided with the connected with first through hole
Three through holes, are equiped with elastic component and antireverse valve spool between the gun body and air nozzle connector, antireverse valve spool is used to block third through-hole,
The two ends of elastic component abut gun body and antireverse valve spool respectively.
Preferably, the antireverse valve spool is provided with the cap portion for being used for blocking third through-hole, and cap portion is in coniform, cap portion
Cross sectional radius close to air nozzle connector one end is less than the radius of third through-hole, cross section of the cap portion away from air nozzle connector one end
Radius is more than the radius of third through-hole.
Preferably, valve is equiped with the first through hole, valve is provided with the fourth hole connected with third through-hole, valve
It is intervally installed with the second through hole, the two ends of elastic component abut valve and antireverse valve spool respectively.
Preferably, the nozzle for stretching out gun body is equiped with the first through hole, nozzle and valve, the second through hole are to each other
Every setting, nozzle is provided with the fifth hole connected with fourth hole.
Preferably, the fifth hole is more than aperture of the fifth hole away from valve one end close to the aperture of valve one end.
Preferably, the gun body is equiped with sleeve, and sleeve is provided with the 6th through hole for being used for being installed with nozzle, and sleeve is provided with projection
Enter in the 6th through hole and be used for the stop section for abutting nozzle.
Preferably, the valve is provided with the multiple protrusive boards for being used for abutting antireverse valve spool and be spaced, protrusive board and four-way
Hole is intervally installed.
Preferably, the elastic component is spring, and antireverse valve spool is made of rubber.
Preferably, the angle between the axis of the first through hole and the axis of the second through hole is 25 °.
Preferably, the side wall of the first through hole and the side wall of the second through hole are coated with layer of polyurethane.
The beneficial effects of the utility model：When actually used, source of the gas is connected with air nozzle connector, sand water liquid will be supplied
Device is connected with the second through hole, after source of the gas is opened, antireverse valve spool compression elastic piece under the extruding of gases at high pressure so that gas circuit is beaten
Open, you can spray sand water liquid from first through hole；After source of the gas is closed, elastic component related antireverse valve spool under elastic force effect is extensive
Restore position so that antireverse valve spool blocks third through-hole, prevent sand water liquid from blowing back into third through-hole and then block third through-hole,
Ensure that spray gun can be used normally.
Brief description of the drawings
Fig. 1 is dimensional structure diagram of the present utility model；
Fig. 2 is decomposition texture schematic diagram of the present utility model；
Fig. 3 is the utility model sectional view.
Reference includes：
11-gun body, 12-air nozzle connector, 13-first through hole
14-the second through hole 15-third through-hole, 16-elastic component
17-antireverse valve spool, 18-layer of polyurethane, 19-cap portion
21-valve, 22-fourth hole, 23-protrusive board
24-nozzle, 25-fifth hole, 26-sleeve
27-the six 28-lock nut of through hole.
Embodiment
For the ease of the understanding of those skilled in the art, further is made to the utility model with reference to embodiment and accompanying drawing
Explanation, the content that embodiment is referred to not to it is of the present utility model limit.
Fig. 1 is referred to Fig. 3, a kind of non-return spray gun of the present utility model, including gun body 11 and be installed in gun body 11
Air nozzle connector 12, gun body 11 is substantially in Y types, and gun body 11 is provided with first through hole 13 and the second through hole connected with first through hole 13
14, first through hole 13 runs through gun body 11, and the second through hole 14 runs through the wall thickness of gun body 11, and air nozzle connector 12 is provided with and first through hole 13
The third through-hole 15 of connection, third through-hole 15 runs through air nozzle connector 12, and bullet is equiped between the gun body 11 and air nozzle connector 12
Property part 16 and antireverse valve spool 17, antireverse valve spool 17 is used to block third through-hole 15, and the two ends of elastic component 16 abut gun body 11 respectively
And antireverse valve spool 17.
When actually used, source of the gas is connected with air nozzle connector 12, the sand source for supplying sand water liquid or sand grains is led to second
Hole 14 is connected, after source of the gas is opened, the compression elastic piece 16 under the squeezing action of gases at high pressure of antireverse valve spool 17 so that antireverse valve spool
17 no longer block third through-hole 15, i.e., by the gas circuit of spray gun opening, thus, gases at high pressure can be by sand water liquid from first through hole
13 spray；After source of the gas is closed, the related antireverse valve spool 17 under elastic force effect of elastic component 16 sets back so that antireverse valve spool 17
Again third through-hole 15 is blocked, prevents sand water liquid from blowing back into third through-hole 15 and then blocks third through-hole 15, it is ensured that spray gun
Can normally it use.
Refer in Fig. 2 and Fig. 3, the present embodiment, the axis of the first through hole 13 and the axis of the second through hole 14
Between angle be 25 ° so that sand water liquid is easier to be flowed into first through hole 13 through the second through hole 14, and then with high pressure gas
Body sprays from first through hole 13.
Preferably, the side wall of the side wall of the first through hole 13 and the second through hole 14 is coated with layer of polyurethane 18, works as sand
When water liquid flows in the second through hole 14, first through hole 13, layer of polyurethane 18 reduces abrasion of the sand water liquid to gun body 11, greatly
The service life of big extension gun body 11.
Fig. 1 to Fig. 3 is referred to, during actual manufacture, is equipped with the gun body 11 on installing plate, installing plate and is provided with installation
Hole, when actually used, required precalculated position is arranged on using fasteners through mounting holes such as bolts and then by spray gun.
The antireverse valve spool 17, which is provided with, is used to blocking the cap portion 19 of third through-hole 15, cap portion 19 substantially in coniform,
Certainly, when third through-hole 15 is not circular hole, the shape in cap portion 19 is coincide with the shape of third through-hole 15, cap portion 19
Cross sectional radius close to the one end of air nozzle connector 12 is less than the radius of third through-hole 15, it is ensured that cap portion 19 is close to air nozzle connector 12
One end can easily protrude into third through-hole 15, cross sectional radius of the cap portion 19 away from the one end of air nozzle connector 12 is more than the
The radius of three through holes 15, it is ensured that third through-hole 15 will not be submerged completely in cap portion 19, by the way that cap portion 19 is arranged such so that
Cap portion 19 can fully block third through-hole 15, it is to avoid sand water liquid is entered through the gap between cap portion 19 and third through-hole 15
Enter in third through-hole 15.
In the present embodiment, the elastic component 16 is spring, the pressure size of the gases at high pressure provided according to source of the gas, this area
Technical staff can select the elastic component 16 of suitable elasticity coefficient；Antireverse valve spool 17 is made of rubber so that antireverse valve spool 17
With certain elasticity, it is ensured that antireverse valve spool 17 can substantially effectively block the third through-hole 15 of air nozzle connector 12.
Valve 21 is equiped with the first through hole 13, the substantially strip cylinder of valve 21, valve 21 is provided with and threeway
The fourth hole 22 that hole 15 is connected, fourth hole 22 runs through valve 21, and valve 21 is intervally installed with the second through hole 14, it is to avoid
Sand water liquid or sand grains are caused because of the second through hole 14 of covering of valve 21 normally to be flowed out through the second through hole 14, elastic component 16
Two ends are connected on valve 21 and on antireverse valve spool 17 respectively.
The valve 21, which is provided with, is used for multiple protrusive boards 23 for abutting antireverse valve spool 17 and being spaced, and protrusive board 23 is from valve 21
Integrally project and form close to one end of antireverse valve spool 17, it is preferable that multiple protrusive boards 23 surround the circular array of fourth hole 22, convex
Plate 23 is intervally installed with fourth hole 22.During the use of non-return spray gun, gases at high pressure extruding antireverse valve spool 17 makes
It is moved towards the direction close to valve 21, and then make it that antireverse valve spool 17 is connected on protrusive board 23, and now third through-hole 15 is flowed into
Gases at high pressure successively through the gap between adjacent protrusive board 23, fourth hole 22 and first through hole 13 spray gun body 11, prevent valve
Core movement is excessive and blocking lives the fourth hole 22 of valve 21, and then causes gases at high pressure from proper flow.
The nozzle 24 for stretching out gun body 11, nozzle 24 and valve 21, the second through hole 14 are equiped with the first through hole 13
It is intervally installed, nozzle 24 is provided with the fifth hole 25 connected with fourth hole 22, fifth hole 25 runs through nozzle 24, it is ensured that
The sand water liquid flowed out from the second through hole 14 can be flowed into fifth hole 25 through the gap between nozzle 24 and valve 21, then
Sprayed again with gases at high pressure through fifth hole 25.
The fifth hole 25 is more than aperture of the fifth hole 25 away from the one end of valve 21 close to the aperture of the one end of valve 21,
So that the flow velocity that gases at high pressure enter with sand water liquid when in fifth hole 25 is less than flow velocity when flowing out fifth hole 25, according to
Bernoulli principle, the big local pressure of rate of flow of fluid is small so that sand water liquid is easier to enter in fifth hole 25, and then with height
Body of calming the anger sprays.
The gun body 11 is equiped with sleeve 26, the substantially strip cylinder of sleeve 26, and sleeve 26, which is provided with, to be used to be installed with nozzle 24
The 6th through hole 27, the 6th through hole 27 runs through sleeve 26, and sleeve 26 is provided with protruding into the 6th through hole 27 and for abutting nozzle
24 stop section, prevents that nozzle 24 from dropping out of sleeve 26 the 6th through hole 27.After nozzle 24 is damaged, user will can cover
Cylinder 26 is disassembled from gun body 11, and then easily changes nozzle 24.In the present embodiment, sleeve 26 is also arranged with lock nut 28,
Nozzle 24 runs through lock nut 28, and the outer surface of sleeve 26 is equipped with the jut for abutting gun body 11, prevents that sleeve 26 from excessively inserting
Enter into first through hole 13, gun body 11 is provided with external screw thread, lock nut 28 is provided with the internal thread coordinated with external screw thread, utilizes
The cooperation of lock nut 28 and gun body 11 and then sleeve 26 is installed in gun body 11.
Above content is only preferred embodiment of the present utility model, for one of ordinary skill in the art, according to this reality
With new thought, it will change in specific embodiments and applications, this specification content should not be construed as
To limitation of the present utility model.
Claims (10)
1. a kind of non-return spray gun, including gun body and the air nozzle connector for being installed in gun body, gun body are led to provided with first through hole and with first
Second through hole of hole connection, air nozzle connector is provided with the third through-hole connected with first through hole, it is characterised in that：The gun body and gas
Elastic component and antireverse valve spool are equiped between mouth joint, antireverse valve spool is used to block third through-hole, and the two ends of elastic component are supported respectively
Connect gun body and antireverse valve spool.
2. non-return spray gun according to claim 1, it is characterised in that：The antireverse valve spool, which is provided with, to be used to block third through-hole
Cap portion, cap portion is in coniform, and cross sectional radius of the cap portion close to air nozzle connector one end is less than the radius of third through-hole,
Cross sectional radius of the cap portion away from air nozzle connector one end is more than the radius of third through-hole.
3. non-return spray gun according to claim 1, it is characterised in that：Valve is equiped with the first through hole, valve is set
There is the fourth hole connected with third through-hole, valve is intervally installed with the second through hole, and the two ends of elastic component abut gas respectively
Mouth and antireverse valve spool.
4. non-return spray gun according to claim 3, it is characterised in that：It is equiped with the first through hole and stretches out gun body
Nozzle, nozzle is intervally installed with valve, the second through hole, and nozzle is provided with the fifth hole connected with fourth hole.
5. non-return spray gun according to claim 4, it is characterised in that：The fifth hole is big close to the aperture of valve one end
In aperture of the fifth hole away from valve one end.
6. non-return spray gun according to claim 4, it is characterised in that：The gun body is equiped with sleeve, and sleeve, which is provided with, to be used for
The 6th through hole of nozzle is installed with, sleeve is provided with the stop section protruded into the 6th through hole and for abutting nozzle.
7. non-return spray gun according to claim 3, it is characterised in that：The valve be provided be used for abut antireverse valve spool and that
Multiple protrusive boards at this interval, protrusive board is intervally installed with fourth hole.
8. non-return spray gun according to claim 1, it is characterised in that：The elastic component is spring, and antireverse valve spool uses rubber
Glue is made.
9. non-return spray gun according to claim 1, it is characterised in that：The axis of the first through hole and the second through hole
Angle between axis is 25 °.
10. non-return spray gun according to claim 1, it is characterised in that：The side wall of the first through hole and the second through hole
Side wall is coated with layer of polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621308107.3U CN206316939U (en) | 2016-12-01 | 2016-12-01 | A kind of non-return spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621308107.3U CN206316939U (en) | 2016-12-01 | 2016-12-01 | A kind of non-return spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206316939U true CN206316939U (en) | 2017-07-11 |
Family
ID=59264998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621308107.3U Active CN206316939U (en) | 2016-12-01 | 2016-12-01 | A kind of non-return spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206316939U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108581855A (en) * | 2018-07-11 | 2018-09-28 | 江西新瑞泰零部件有限公司 | A kind of sand blasting unit with turning function |
| CN111098235A (en) * | 2020-01-06 | 2020-05-05 | 中国铁建重工集团股份有限公司 | Abrasive water jet nozzle with backwater prevention structure and material spraying method |
-
2016
- 2016-12-01 CN CN201621308107.3U patent/CN206316939U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108581855A (en) * | 2018-07-11 | 2018-09-28 | 江西新瑞泰零部件有限公司 | A kind of sand blasting unit with turning function |
| CN111098235A (en) * | 2020-01-06 | 2020-05-05 | 中国铁建重工集团股份有限公司 | Abrasive water jet nozzle with backwater prevention structure and material spraying method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |