CN110801974B - Coating spraying valve with nozzle cleaning and dredging functions - Google Patents
Coating spraying valve with nozzle cleaning and dredging functions Download PDFInfo
- Publication number
- CN110801974B CN110801974B CN201911163304.9A CN201911163304A CN110801974B CN 110801974 B CN110801974 B CN 110801974B CN 201911163304 A CN201911163304 A CN 201911163304A CN 110801974 B CN110801974 B CN 110801974B
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- Prior art keywords
- valve core
- valve body
- valve
- nozzle
- core assembly
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000004140 cleaning Methods 0.000 title claims abstract description 55
- 238000005507 spraying Methods 0.000 title claims abstract description 35
- 239000011248 coating agent Substances 0.000 title claims abstract description 27
- 238000000576 coating method Methods 0.000 title claims abstract description 27
- 239000003973 paint Substances 0.000 claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 39
- 230000008859 change Effects 0.000 claims description 2
- 239000007921 spray Substances 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
- B05B15/522—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings
Landscapes
- Nozzles (AREA)
Abstract
The invention discloses a paint spraying valve with a nozzle cleaning and dredging function, belonging to the technical field of fluid control and aiming at solving the technical problem that a spray head system in the prior art is easy to block a nozzle during spraying operation so as to influence the spraying operation. The spraying valve is characterized by comprising a first driving source, a valve body, a valve core assembly arranged in the valve body and a valve body end cover arranged at the front end of the valve body, wherein a through hole needle is arranged at the front end of the valve core assembly, a nozzle is arranged on the valve body end cover, the through hole needle is matched with the nozzle, a coating inlet is arranged on the side surface of the valve body, the valve core assembly is concentric with the valve body, and the first driving source drives the valve core assembly to axially slide back and forth in the valve body; when the valve core assembly slides away from the front end of the valve body, the coating inlet is communicated with the nozzle; when the valve core assembly slides to the front end of the valve body, the front end of the valve core assembly is abutted against the inner side of the nozzle, so that a communication channel between the nozzle and the coating inlet is isolated, and the through-hole needle penetrates through the nozzle to play a dredging function.
Description
Technical Field
The invention relates to a paint spraying valve with a nozzle cleaning and dredging function, and belongs to the technical field of fluid control.
Background
Spraying operation is a common operation link in the related fields of machinery, chemical engineering and the like, and at present, spray type spraying, point spraying, special spraying and other operation modes are common. When the paint sprayer system works, paint is sprayed on the surface of an object through the spray nozzle, and because the aperture of the spray nozzle is small, particles with large diameters are often mixed in spraying liquid, and the particles can often block the spray nozzle during spraying operation; if the spraying operation is carried out for a long time, the spraying liquid attached to the vicinity of the nozzle can form lumps gradually and can block the nozzle, so that an operator needs to dredge the nozzle frequently to ensure the normal operation of the spraying operation; in order to ensure that the sprayer system works reliably for a long time, the nozzles are often cleaned manually, which wastes time and labor.
Disclosure of Invention
The invention aims to provide a paint spraying valve with a nozzle cleaning and dredging function, aiming at solving the technical problem that a spray head system in the prior art is easy to block a nozzle during spraying operation, so that the spraying operation is influenced.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a coating spraying valve with a nozzle cleaning and dredging function comprises a first driving source, a valve body, a valve core assembly arranged in the valve body and a valve body end cover arranged at the front end of the valve body, wherein a through hole needle is arranged at the front end of the valve core assembly; when the valve core assembly slides away from the front end of the valve body, the coating inlet is communicated with the nozzle; when the valve core assembly slides to the front end of the valve body, the front end of the valve core assembly is abutted against the inner side of the end cover of the valve body, so that a communication channel between the nozzle and the coating inlet is isolated, and the through-hole needle penetrates through the nozzle to play a dredging function.
Preferably, the side surface of the valve body is also provided with a coating outlet, a front cavity is formed between the side surface of the front end of the valve core assembly and the valve body, and the coating inlet is communicated with the coating outlet through the front cavity so as to realize the circulating flow of the coating.
Preferably, the valve core assembly comprises a large valve core arranged in the valve body and a small valve core arranged in the large valve core, the large valve core and the small valve core are concentric, the through hole needle is arranged at the front end of the small valve core, a cleaning liquid inlet is further arranged on the side surface of the valve body, a cleaning liquid flow channel is arranged in the large valve core, an outer port of the cleaning liquid flow channel is communicated with the cleaning liquid inlet, an inner port of the cleaning liquid flow channel is arranged at the front part of the inner side of the large valve core, and the small valve core is driven by the second driving source to slide back and forth in the large; when the small valve core slides away from the front end of the large valve core, the cleaning liquid inlet is communicated with the nozzle through the cleaning liquid flow passage; when the small valve core slides to the front end of the large valve core, the side wall of the front part of the small valve core cuts off the inner port of the cleaning fluid flow passage, and the through hole needle penetrates through the nozzle for dredging.
Preferably, the first driving source comprises a cylinder which is connected with the rear end of the valve body in a sealing mode, and the cylinder drives the valve core assembly to slide back and forth in the valve body along the axial direction by means of pressure change of the cylinder.
Preferably, the rear end of the big valve core is provided with a big valve core end cover, a spring is connected between the big valve core end cover and the rear end of the small valve core, the side surface of the valve body is also provided with an air inlet, the side surface of the big valve core is provided with a big valve core air hole, when the first driving source drives the big valve core to slide to the front end of the valve body, the air inlet is communicated to the side surface of the small valve core through the big valve core air hole, and at the moment, if the air inlet is connected with high-pressure gas, the high-pressure; if the air inlet is not connected with high-pressure air, the spring pushes the small valve core to slide forwards in the large valve core along the axial direction.
Preferably, the valve body end cover is connected with the front end of the valve body in a sealing mode through screws.
Preferably, the air cylinder is connected with the rear end of the valve body in a sealing mode through a screw.
Preferably, the rear end of the big valve core is in sealing connection with the big valve core end cover through a screw.
Compared with the prior art, the invention has the following beneficial effects: the combined design of the large valve core, the small valve core, the through hole needle, the cleaning liquid inlet and the cleaning liquid flow channel ensures that the spraying valve can continuously finish the action of dredging the nozzle and the action of cleaning the nozzle in the clearance of two spraying actions, thereby avoiding the problem of nozzle blockage; the combined design of the coating inlet, the coating outlet and the front cavity realizes the circulating flow of the coating in the spraying operation process, so as to avoid the caking of the coating due to the stillness and be beneficial to ensuring the smooth operation of the spraying operation.
Drawings
FIG. 1 is a front view of an embodiment of the present invention;
fig. 2 is a top view of an embodiment of the present invention.
In the figure: 1. a cylinder; 2. a big valve core end cover; 3. a spring; 4. a valve body; 5. a large valve core; 501. a big valve core air hole; 6. a small valve core; 7. a through-hole needle; 8. a valve body end cover; 9. a nozzle; 401. an air inlet; 402. a cleaning liquid inlet; 502. a cleaning liquid flow passage; 403. a coating inlet; 404. a coating outlet; 405. a front cavity.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
It should be noted that in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1 and 2, which are a front view and a top view of an embodiment of the present invention, a paint spraying valve with a nozzle cleaning and dredging function includes a first driving source, a second driving source, a valve body 4, a valve core assembly disposed in the valve body 4, and a valve body end cover 8 disposed at the front end of the valve body 4, where the valve body end cover 8 is hermetically connected with the front end of the valve body 4 through a screw, the valve core assembly includes a large valve core 5 disposed in the valve body 4 and a small valve core 6 disposed in the large valve core 5, the valve body 4, the large valve core 5, and the small valve core 6 are all concentric with each other, the first driving source can drive the large valve core 5 to slide back and forth in the valve body 4 in an axial direction, and the second driving source can drive the small valve core 6 to slide. The center of the front end of the small valve core 6 is provided with a through hole needle 7, the small valve core 6 is connected with the through hole needle 7 through a threaded fixing hole matched with the through hole needle 7 at the front end of the small valve core, the rear end of the large valve core 5 is hermetically connected with the large valve core end cover 2 through a screw, the center of the valve body end cover 8 is provided with a nozzle 9 matched with the through hole needle 7, the side surface of the valve body 4 is provided with a coating inlet 403 and a coating outlet 404, an annular front cavity 405 is formed between the side surface of the front end of the large valve core 5 and the valve body 4, and the coating inlet 403 is communicated with the coating outlet 404 through the front cavity 405, so that the coating circularly flows in the spraying operation process, and. The side surface of the valve body 4 is also provided with a cleaning liquid inlet 402, an S-shaped cleaning liquid flow passage 502 is arranged inside the big valve core 5, the outer end of the cleaning liquid flow passage 502 is communicated with the cleaning liquid inlet 402, and the inner end of the cleaning liquid flow passage 502 is opened at the front part of the inner side of the big valve core 5.
In the process that the first driving source drives the big valve core 5 to slide back and forth in the valve body 4 along the axial direction, when the big valve core 5 slides to the front end of the valve body 4, the front end of the big valve core 5 abuts against the inner side of the valve body end cover 8, and therefore a communication channel between the nozzle 9 and the paint inlet 403 and the paint outlet 404 is blocked. If the small valve core 6 is driven by the second driving source to slide away from the front end of the large valve core 5, the cleaning liquid inlet 402 is communicated with the nozzle 9 through the cleaning liquid flow channel 502 and the through hole at the front end of the large valve core 5, and the cleaning liquid injected from the cleaning liquid inlet 402 flows through the communication channel and is finally sprayed out from the nozzle 9, so that the function of cleaning the nozzle 9 is achieved; if the small valve core 6 is driven by the second driving source to slide to the front end of the large valve core 5, the inner port of the cleaning liquid flow channel 502 is blocked by the side wall of the front part of the small valve core 6, so that the cleaning liquid is prevented from flowing out, and the through hole needle 7 penetrates through the nozzle 9, so that the function of dredging the nozzle 9 is achieved. When the large valve core 5 slides away from the front end of the valve body 4, the front end of the large valve core 5 is separated from the inner side of the nozzle 9, so that the paint inlet 403 and the paint outlet 404 are communicated with the nozzle 9, and the paint injected from the paint inlet 403 is sprayed out through the nozzle 9 to implement normal spraying operation.
More specifically, the first driving source is a cylinder 1 which is hermetically connected with the rear end of the valve body 4, and the cylinder 1 is hermetically connected with the rear end of the valve body 4 through a screw; the cylinder 1 drives the big valve core 5 to slide back and forth in the valve body 4 along the axial direction by using external high-pressure gas.
A spring 3 is connected between the end cover 2 of the large valve core and the rear end of the small valve core 6, and the spring 3 is in a compressed state for a long time, so that an axial thrust is applied to the small valve core 6; the side surface of the valve body 4 is also provided with an air inlet 401, and the side surface of the big valve core 5 is provided with a big valve core air hole 501. When the cylinder 1 drives the big valve core 5 to slide to the front end of the valve body 4, the air inlet 401 is just communicated to the side surface of the small valve core 6 through the big valve core air hole 501, and the high-pressure air and the spring 3 jointly form a second driving source. The high-pressure gas pushes the small valve core 6 to slide backwards in the large valve core 5 along the axial direction, so that the small valve core 6 slides away from the front end of the large valve core 5, the cleaning liquid inlet 402 is communicated with the nozzle 9 through the cleaning liquid flow passage 502 and a through hole at the front end of the large valve core 5, the cleaning liquid flows through the communication passage and is finally sprayed out from the nozzle 9, and the function of cleaning the nozzle 9 is achieved; if the high-pressure air source is closed at the moment, the small valve core 6 slides forwards in the large valve core 5 along the axial direction under the thrust action of the spring 3 until the small valve core 6 slides to the front end of the large valve core 5, the inner port of the cleaning liquid flow channel 502 is blocked by the side wall of the front part of the small valve core 6, so that the cleaning liquid is prevented from flowing out, and the through hole needle 7 penetrates through the nozzle 9, so that the function of dredging the nozzle 9 is achieved. When the cylinder 1 drives the big valve core 5 to slide away from the front end of the valve body 4 by using external high-pressure gas, the gas inlet 401 and the big valve core gas hole 501 are staggered with each other, the high-pressure gas cannot reach the side surface of the small valve core 6, the small valve core 6 slides to the front end of the big valve core 5 under the thrust action of the spring 3, the side wall of the front part of the small valve core 6 blocks an inner port of the cleaning liquid flow channel 502, so that the cleaning liquid is prevented from flowing out, and the through hole needle 7 penetrates through a through hole; at this time, the front end of the large valve body 5 is separated from the inside of the nozzle 9, so that the paint inlet 403 and the paint outlet 404 are communicated with the nozzle 9, and the paint injected from the paint inlet 403 is sprayed through the nozzle 9, thereby realizing a normal spraying operation.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A coating spraying valve with a nozzle cleaning and dredging function is characterized by comprising a first driving source, a valve body (4), a valve core assembly arranged in the valve body (4), and a valve body end cover (8) arranged at the front end of the valve body (4), wherein a through hole needle (7) is arranged at the front end of the valve core assembly, a nozzle (9) is arranged on the valve body end cover (8), the through hole needle (7) is matched with the nozzle (9), a coating inlet (403) is arranged on the side surface of the valve body (4), the valve core assembly is concentric with the valve body (4), and the first driving source drives the valve core assembly to slide back and forth in the valve body (4) along the axial direction; when the valve core assembly slides away from the front end of the valve body (4), the coating inlet (403) is communicated with the nozzle (9); when the valve core assembly slides to the front end of the valve body (4), the front end of the valve core assembly is abutted against the inner side of the valve body end cover (8), so that a communication channel between the nozzle (9) and the coating inlet (403) is isolated, and the through hole needle (7) penetrates through the nozzle (9) to play a dredging function; the valve core assembly comprises a large valve core (5) arranged in the valve body (4) and a small valve core (6) arranged in the large valve core (5), the large valve core (5) is concentric with the small valve core (6), the through hole needle (7) is arranged at the front end of the small valve core (6), a cleaning liquid inlet (402) is further arranged on the side surface of the valve body (4), a cleaning liquid flow passage (502) is arranged in the large valve core (5), an outer port of the cleaning liquid flow passage (502) is communicated with the cleaning liquid inlet (402), an inner port of the cleaning liquid flow passage (502) is arranged at the front part of the inner side of the large valve core (5), and the small valve core (6) is driven by the second driving source to slide back and forth in the large valve core (5) along; when the small valve core (6) slides away from the front end of the large valve core (5), the cleaning liquid inlet (402) is communicated with the nozzle (9) through the cleaning liquid flow passage (502); when the small valve core (6) slides to the front end of the large valve core (5), the side wall of the front part of the small valve core (6) cuts off the inner port of the cleaning liquid flow passage (502), and the through hole needle (7) penetrates through the nozzle (9).
2. The paint spraying valve with the nozzle cleaning and dredging function as claimed in claim 1, wherein a paint outlet (404) is further formed in the side surface of the valve body (4), a front cavity (405) is formed between the side surface of the front end of the valve core assembly and the valve body (4), and the paint inlet (403) is communicated with the paint outlet (404) through the front cavity (405) so as to achieve circular paint flow.
3. The paint spraying valve with the nozzle cleaning and dredging function as claimed in claim 1, wherein the first driving source comprises a cylinder (1) hermetically connected with the rear end of the valve body (4), and the cylinder (1) drives the valve core assembly to slide back and forth in the axial direction in the valve body (4) by using the pressure change of the cylinder.
4. The paint spraying valve with the nozzle cleaning and dredging function as claimed in claim 1, wherein a big valve core end cover (2) is arranged at the rear end of the big valve core (5), a spring (3) is connected between the big valve core end cover (2) and the rear end of the small valve core (6), an air inlet (401) is further arranged on the side surface of the valve body (4), a big valve core air hole (501) is arranged on the side surface of the big valve core (5), when the big valve core (5) is driven by the first driving source to slide to the front end of the valve body (4), the air inlet (401) is communicated to the side surface of the small valve core (6) through the big valve core air hole (501), and at the moment, if high-pressure gas is introduced into the air inlet (401), the small valve core (6) is pushed to; if the air inlet (401) is not connected with high-pressure air, the spring (3) pushes the small valve core (6) to slide forwards in the large valve core (5) along the axial direction.
5. The paint spraying valve with the nozzle cleaning and dredging function as claimed in any one of claims 1 to 4, wherein the valve body end cover (8) is hermetically connected with the front end of the valve body (4) through a screw.
6. The paint spraying valve with the nozzle cleaning and dredging function as claimed in claim 3, wherein the cylinder (1) is hermetically connected with the rear end of the valve body (4) by a screw.
7. The paint spraying valve with the nozzle cleaning and dredging function as claimed in claim 4, wherein the rear end of the big valve core (5) is hermetically connected with the big valve core end cover (2) through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911163304.9A CN110801974B (en) | 2019-11-25 | 2019-11-25 | Coating spraying valve with nozzle cleaning and dredging functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911163304.9A CN110801974B (en) | 2019-11-25 | 2019-11-25 | Coating spraying valve with nozzle cleaning and dredging functions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110801974A CN110801974A (en) | 2020-02-18 |
| CN110801974B true CN110801974B (en) | 2021-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911163304.9A Expired - Fee Related CN110801974B (en) | 2019-11-25 | 2019-11-25 | Coating spraying valve with nozzle cleaning and dredging functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110801974B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111889245B (en) * | 2020-07-29 | 2021-11-05 | 中铁十六局集团第五工程有限公司 | Spraying device for bridge steel structure |
| CN114345572B (en) * | 2021-02-02 | 2024-08-23 | 湖南九九智能环保股份有限公司 | Anti-blocking automatic blockage removing type air-water atomizing nozzle |
| CN114798263A (en) * | 2022-03-18 | 2022-07-29 | 东莞市协威塑胶电子科技有限公司 | Anti-blocking spray valve |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE512189C2 (en) * | 1997-04-21 | 2000-02-07 | Sven Erik Ingemar Halltorp | Spray Valve Device |
| US6929193B2 (en) * | 2002-03-13 | 2005-08-16 | Sealed Air Corporation | Tip for a foam-in-place dispenser |
| CN2923050Y (en) * | 2006-06-27 | 2007-07-18 | 宝山钢铁股份有限公司 | Coat-circuation type spraying gun |
| JP5412668B2 (en) * | 2009-02-09 | 2014-02-12 | ランズバーグ・インダストリー株式会社 | Spray device with adjusting member |
| DE102009020064A1 (en) * | 2009-05-06 | 2010-11-11 | Dürr Systems GmbH | Fluid valve, in particular recirculation valve for a paint shop |
| CN205824232U (en) * | 2016-06-24 | 2016-12-21 | 圣博莱阀门有限公司 | The pneumatic moushroom valve of reciprocating swing type |
| CN207722976U (en) * | 2017-12-21 | 2018-08-14 | 重庆中烟工业有限责任公司 | Antidrip washer jet |
| CN209205624U (en) * | 2018-09-21 | 2019-08-06 | 珠海市运泰利自动化设备有限公司 | A kind of simple glue valve wiper mechanism |
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2019
- 2019-11-25 CN CN201911163304.9A patent/CN110801974B/en not_active Expired - Fee Related
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| CN110801974A (en) | 2020-02-18 |
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Granted publication date: 20210305 |