CN108262219B - Liquid sealing type valve assembly - Google Patents
Liquid sealing type valve assembly Download PDFInfo
- Publication number
- CN108262219B CN108262219B CN201810256671.2A CN201810256671A CN108262219B CN 108262219 B CN108262219 B CN 108262219B CN 201810256671 A CN201810256671 A CN 201810256671A CN 108262219 B CN108262219 B CN 108262219B
- Authority
- CN
- China
- Prior art keywords
- liquid
- sealing
- valve
- valve body
- bin
- Prior art date
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/027—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated
- B05C5/0275—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated flow controlled, e.g. by a valve
- B05C5/0279—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated flow controlled, e.g. by a valve independently, e.g. individually, flow controlled
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention belongs to the technical field of valves, and provides a liquid sealing type valve assembly. The valve assembly comprises a valve body, a valve core, a valve sleeve, a glue inlet channel, a push rod, a liquid channel and sealing liquid, wherein the valve sleeve is arranged in the valve body, the valve core is rotatably arranged in the valve sleeve, one end of the valve core is in sealing connection with the end part of the valve body through a first sealing assembly, the valve body and the valve sleeve form a first sealing liquid bin, the valve core penetrates through the first sealing liquid bin, a first sealing cover is arranged on the end part, opposite to the first sealing assembly, of the valve body, the valve sleeve and the valve core are covered by the first sealing cover, the valve core, the valve body, the valve sleeve and the valve core form a second sealing liquid bin, the liquid channel is formed in the valve body and is communicated with the first sealing liquid bin and the second sealing liquid bin, and the sealing liquid is filled in the first sealing liquid bin and the second sealing liquid bin through the liquid channel. The invention adopts sealing liquid to seal completely, reduces friction of moving parts and prolongs service life.
Description
Technical Field
The invention belongs to the technical field of valves, and particularly relates to a liquid sealing type valve assembly.
Background
The dispensing valve is widely applied to the fluid industry and is used for realizing the precise control of the dispensing quantity. However, the conventional dispensing valve adopts a sealing cover, a sealing ring and the like to carry out a non-complete sealing structure form with residual air, and has the following defects: (1) The moving part is easy to wear during movement, for example, the opening and closing of the valve is hard-to-hard friction between the valve core and the valve sleeve, so that the valve core and the valve sleeve are worn, and the service life is seriously influenced; (2) Glue easily permeates into a gap between the valve core and the valve sleeve, so that the valve is blocked and even scrapped; (3) And can not be used in the application of some quick-drying adhesives which can not be contacted with air.
The defects cause that the application industry and the scene of the existing dispensing valve are greatly limited, the valve cannot adapt to modern diversified application, and the development of the fluid industry is hindered.
Disclosure of Invention
The embodiment of the invention aims to solve the technical problem that the service life of a dispensing valve in the prior art is short due to the fact that a non-complete sealing structure is adopted.
The embodiment of the invention is realized by providing a liquid sealing type valve assembly, which comprises a valve body, a valve core, a valve sleeve, a glue inlet channel, a push rod, a liquid channel and sealing liquid which can be fused with glue, wherein the valve sleeve is arranged in the valve body, the valve core is rotatably arranged in the valve sleeve, one end of the valve core is in sealing connection with the end part of the valve body through a first sealing assembly, a space formed by the first sealing assembly, the valve body and the valve sleeve forms a first sealing liquid bin, the valve core penetrates through the first sealing liquid bin, a first sealing cover is arranged at the end part of the valve body opposite to the first sealing assembly, the first sealing cover covers the end parts of the valve sleeve and the valve core, and forms a second sealing liquid bin with the space formed by the valve body, the valve sleeve and the valve core, the liquid channel is formed in the valve body and is communicated with the first sealing liquid bin and the second sealing liquid bin through the liquid channel, and the sealing liquid is filled in the first sealing liquid bin and the second sealing liquid bin through the liquid channel;
the valve body is internally provided with a glue outlet cavity and a glue inlet channel, the push rod is arranged in the valve body, one end of the push rod is telescopically inserted into the glue outlet cavity, glue enters from the glue inlet channel and can pass through the valve sleeve and the valve core to enter the glue outlet cavity, and the push rod is pressed out of the valve body.
Further, the push rod is in sealing connection with the valve body through a second sealing member assembly and a second sealing cover, a third sealing liquid bin is formed in a space formed by the valve body, the second sealing cover and the second sealing assembly, the push rod penetrates through the third sealing liquid bin, and sealing liquid is filled in the third sealing liquid bin through the liquid channel.
Further, the liquid channel comprises a liquid inlet, a liquid outlet, a first liquid channel port, a second liquid channel port, a third liquid channel port, a fourth liquid channel port, a fifth liquid channel port and a sixth liquid channel port;
the liquid inlet and the liquid outlet are respectively positioned at two sides of the upper end of the valve body, the first liquid passage port, the second liquid passage port, the third liquid passage port and the fourth liquid passage port are all positioned at the lower end of the valve body, and the fifth liquid passage port and the sixth liquid passage port are positioned at the upper end of the valve body;
the sealing liquid flows in from the liquid inlet, sequentially passes through the first liquid passage opening, the first sealing liquid bin, the second liquid passage opening, the third liquid passage opening, the second sealing liquid bin, the fourth liquid passage opening, the fifth liquid passage opening, the third sealing liquid bin and the sixth liquid passage opening, and finally flows out from the liquid outlet.
Further, a valve sleeve hole communicated with the glue inlet channel and the glue outlet cavity is formed in the valve sleeve, a circulating groove communicated with the valve sleeve hole and the glue outlet cavity is formed in the valve core, and a through hole communicated with the glue outlet cavity is formed in the valve core.
Further, the valve body is also provided with an air exhaust hole communicated with the glue outlet cavity.
Compared with the prior art, the embodiment of the invention has the beneficial effects that: according to the invention, the sealing liquid is filled in the first sealing liquid bin and the second sealing liquid bin through the liquid channel, and the sealing liquid is used for realizing complete sealing, so that a tiny gap between the valve sleeve and the valve core can be filled, and a liquid protection film is formed on the surface of the valve core, so that the valve core acts as a lubricant when rotating, friction during movement is reduced, and the service life is prolonged; and the glue is guaranteed not to contact with air in the process of glue feeding and glue discharging, and the leaked trace glue caused by the internal pressure of the valve body can be fused in sealing liquid for isolating air, so that the valve is prevented from being blocked due to solidification of the glue.
Drawings
FIG. 1 is a schematic perspective view of a liquid-tight valve assembly according to an embodiment of the present invention;
FIG. 2 is a schematic front view of the liquid tight valve assembly of FIG. 1;
FIG. 3 is a schematic view of the cross-sectional structure of A-A in FIG. 2;
FIG. 4 is a schematic view of the cross-sectional structure B-B of FIG. 2;
FIG. 5 is a schematic view of the cross-sectional structure of C-C in FIG. 2;
fig. 6 is a schematic view of another state structure in fig. 5.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 6, the liquid sealing type valve assembly provided by the embodiment of the invention comprises a valve body 1, a valve core 2, a valve sleeve 3, a glue inlet channel 4, a push rod 5, a liquid channel 6 and sealing liquid compatible with glue. The valve sleeve 3 is arranged in the valve body 1, the valve core 2 is rotatably arranged in the valve sleeve 2, one end of the valve core 2 is in sealing connection with the end part of the valve body 1 through the first sealing component 7, the space formed by the first sealing component 7, the valve body 1 and the valve sleeve 3 forms a first sealing liquid bin 10, the valve core is arranged in the first sealing liquid bin 10 in a penetrating way, the end part of the valve body 1 opposite to the first sealing component 7 is provided with a first sealing cover 8, the first sealing cover 8 covers the end part of the valve sleeve 2 and the valve core 2, the space formed by the valve body 1, the valve sleeve 3 and the valve core 2 forms a second sealing liquid bin 20, the liquid channel 6 is formed in the valve body 1 and is communicated with the first sealing liquid bin 10 and the second sealing liquid bin 20, and the sealing liquid is filled in the first sealing liquid bin 10 and the second sealing liquid bin 20 through the liquid channel 6, so that the valve sleeve 3 and the valve core 2 can be completely sealed by utilizing the sealing liquid to isolate air, the sealing liquid is filled in a tiny gap between the valve sleeve 3 and the valve core 2, a liquid protection film is formed on the surface of the valve core 2, the valve core 2 acts as a lubricant when the valve core 2 rotates, the friction is reduced, the service life of the valve core 2 is prolonged;
the valve body 1 is also provided with a glue outlet cavity 11 and a glue inlet channel 12, the push rod 5 is arranged in the valve body 1, one end of the push rod 5 is telescopically inserted into the glue outlet cavity 11, glue enters from the glue inlet channel 12 and can pass through the valve sleeve 3 and the valve core 2 to enter the glue outlet cavity 11, and the push rod 5 applies work to press the glue out of the valve body 1 through the glue outlet head 9. The push rod 5 is in sealing connection with the valve body 1 through the second sealing member assembly 13 and the second sealing cover 14, a third sealing liquid bin 30 is formed by the space formed by the valve body 1, the second sealing cover 14 and the second sealing assembly 13, the push rod 5 is arranged in the third sealing liquid bin 30 in a penetrating mode, sealing liquid is filled in the third sealing liquid bin 30 through the liquid channel 6, on one hand, sealing effect is guaranteed, and on the other hand, moving abrasion of the push rod 5 can be reduced.
In the above embodiment, the valve sleeve 3 is provided with the valve sleeve hole 31 which is respectively communicated with the glue inlet channel 12 and the glue outlet cavity 11, the valve core 2 is provided with the circulation groove 21 which is capable of being communicated with the valve sleeve hole 31 and the glue outlet cavity 11, the valve core 2 is also provided with the through hole 22 which is capable of being communicated with the glue outlet cavity 11, and the valve body 1 is also provided with the air outlet hole 15 which is communicated with the glue outlet cavity 11. As shown in fig. 5, when glue is required to be fed into the glue outlet cavity 11, the valve core 2 is rotated by the external force mechanism to enable the circulation groove 21 on the valve core 2 to be opposite to the valve sleeve hole 31 and the glue outlet cavity 11, so that glue flows through the valve sleeve hole 31, the circulation groove 21 and the valve sleeve hole 31 from the glue feeding channel 12 in sequence and then enters the glue outlet cavity 11. As shown in fig. 6, when the glue is needed, after the valve core 2 is rotated by a certain angle through the external force mechanism, the circulation grooves 21 on the valve core 2 are blocked by the valve sleeve hole 31 and the glue outlet cavity 11, and the through holes 22 on the valve core 2 are communicated with the glue outlet cavity 11, so that the glue stored in the glue outlet cavity 11 flows out from the glue outlet head 9 through the valve sleeve hole 31 and the through holes 22 for dispensing. In the process of glue feeding and glue discharging, the fact that the glue is not contacted with air is guaranteed, and the micro glue leaked due to the internal pressure of the valve body 1 can be fused in sealing liquid for isolating air, so that the moving parts are prevented from being blocked due to solidification of the glue.
In the above embodiment, the liquid passage 6 includes the liquid inlet 61, the liquid outlet 62, the first liquid passage port 63, the second liquid passage port 64, the third liquid passage port 65, the fourth liquid passage port 66, the fifth liquid passage port 67, and the sixth liquid passage port 68. The liquid inlet 61 and the liquid outlet 62 are respectively located at both sides of the upper end of the valve body 1 for the inflow and outflow of the sealing liquid. The first, second, third and fourth liquid passage ports 63, 64, 65 and 66 are all located at the lower end of the valve body 1, and the fifth and sixth liquid passage ports 67 and 68 are located at the upper end of the valve body 1. The circulation direction of the sealing liquid for complete sealing is as follows: sealing liquid flows in from the liquid inlet 61 and sequentially passes through the first liquid passage port 63, the first sealing liquid bin 10, the second liquid passage port 64, the third liquid passage port 65, the second sealing liquid bin 20, the fourth liquid passage port 66, the fifth liquid passage port 67, the third sealing liquid bin 30 and the sixth liquid passage port 68, and finally flows out from the liquid outlet 62, so that the joint of each moving part can be lubricated by the sealing liquid, circulation of the sealing liquid can be realized, and glue leaked and fused in the sealing liquid can be brought out.
In summary, the sealing liquid is filled in the first sealing liquid bin 10, the second sealing liquid bin 20 and the third sealing liquid bin 30 through the liquid channel 6, so that the valve assembly can be completely sealed by the sealing liquid, the sealing liquid fills the tiny gaps among all the moving parts, the surfaces of the moving parts form a liquid protection film, the abrasion generated in the moving process of the moving parts is reduced, the leakage trace glue caused by the internal pressure of the valve body 1 can be fused in the sealing liquid, and the glue is prevented from being solidified to lock the moving parts along with the flowing out of the valve body 1.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (2)
1. The liquid sealing type valve assembly is characterized by comprising a valve body, a valve core, a valve sleeve, a glue inlet channel, a push rod, a liquid channel and sealing liquid which can be fused with glue, wherein the valve sleeve is arranged in the valve body, the valve core is rotatably arranged in the valve sleeve, one end of the valve core is in sealing connection with the end part of the valve body through a first sealing assembly, a space formed by the first sealing assembly, the valve body and the valve sleeve forms a first sealing liquid bin, the valve core penetrates through the first sealing liquid bin, a first sealing cover is arranged at the end part of the valve body opposite to the first sealing assembly, the first sealing cover is covered at the end parts of the valve sleeve and the valve core, a second sealing liquid bin is formed by the space formed by the valve body, the valve sleeve and the valve core, the liquid channel is formed in the valve body and is communicated with the first sealing liquid bin and the second sealing liquid bin, and the sealing liquid is filled in the first sealing liquid bin and the second sealing liquid bin through the liquid channel;
the valve body is internally provided with a glue outlet cavity and a glue inlet channel, the push rod is arranged in the valve body, one end of the push rod is telescopically inserted into the glue outlet cavity, glue enters from the glue inlet channel and can pass through the valve sleeve and the valve core to enter the glue outlet cavity, and the push rod presses out of the valve body;
the push rod is in sealing connection with the valve body through a second sealing member assembly and a second sealing cover, a third sealing liquid bin is formed in a space formed by the valve body, the second sealing cover and the second sealing assembly, the push rod penetrates through the third sealing liquid bin, and sealing liquid is filled in the third sealing liquid bin through the liquid channel;
the liquid channel comprises a liquid inlet, a liquid outlet, a first liquid channel port, a second liquid channel port, a third liquid channel port, a fourth liquid channel port, a fifth liquid channel port and a sixth liquid channel port;
the liquid inlet and the liquid outlet are respectively positioned at two sides of the upper end of the valve body, the first liquid passage port, the second liquid passage port, the third liquid passage port and the fourth liquid passage port are all positioned at the lower end of the valve body, and the fifth liquid passage port and the sixth liquid passage port are positioned at the upper end of the valve body;
the sealing liquid flows in from the liquid inlet, sequentially passes through the first liquid passage opening, the first sealing liquid bin, the second liquid passage opening, the third liquid passage opening, the second sealing liquid bin, the fourth liquid passage opening, the fifth liquid passage opening, the third sealing liquid bin and the sixth liquid passage opening, and finally flows out from the liquid outlet;
and the valve body is also provided with an air exhaust hole communicated with the glue outlet cavity.
2. The liquid-tight valve assembly of claim 1, wherein the valve housing is provided with a valve housing hole which is respectively communicated with the glue inlet channel and the glue outlet cavity, the valve core is provided with a flow channel which is communicated with the valve housing hole and the glue outlet cavity, and the valve core is also provided with a through hole which is communicated with the glue outlet cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810256671.2A CN108262219B (en) | 2018-03-27 | 2018-03-27 | Liquid sealing type valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810256671.2A CN108262219B (en) | 2018-03-27 | 2018-03-27 | Liquid sealing type valve assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108262219A CN108262219A (en) | 2018-07-10 |
| CN108262219B true CN108262219B (en) | 2023-04-28 |
Family
ID=62777942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810256671.2A Active CN108262219B (en) | 2018-03-27 | 2018-03-27 | Liquid sealing type valve assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108262219B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4052997A (en) * | 1972-11-27 | 1977-10-11 | Lorenzo Bruce L De | Leak detection arrangement for valve having sealing means |
| EP0051698A1 (en) * | 1980-11-06 | 1982-05-19 | Consolidated Papers, Inc. | Paper coating method and apparatus |
| CN1961137A (en) * | 2004-04-27 | 2007-05-09 | 米尔基希斯沃克有限责任公司 | Valve rotating mechanism for exhaust valves, especially for marine diesel engines |
| JP2007313485A (en) * | 2006-05-29 | 2007-12-06 | Nissan Motor Co Ltd | Apparatus and method for supplying high-viscosity fluid |
| CN101199954A (en) * | 2006-12-13 | 2008-06-18 | 诺信公司 | Multi-plate nozzle and method for dispensing random pattern of adhesive filaments |
| CN102852583A (en) * | 2011-06-29 | 2013-01-02 | 卡特彼勒发动机有限责任两合公司 | Valve stem seal for a combustion engine |
| CN202832576U (en) * | 2012-08-14 | 2013-03-27 | 巨隆集团芜湖兴隆液压有限公司 | Three-use valve for mining individual hydraulic prop |
| CN103032627A (en) * | 2011-09-29 | 2013-04-10 | Skf公司 | Valve stem seal |
| CN103748389A (en) * | 2011-08-31 | 2014-04-23 | 伊利诺斯工具制品有限公司 | Hydraulic seal assembly for a thermoplastic material dispensing valve assembly |
| CN104455499A (en) * | 2014-11-28 | 2015-03-25 | 王驭舟 | Combined sealing stop valve |
| CN205074168U (en) * | 2015-09-01 | 2016-03-09 | 深圳市世椿智能装备股份有限公司 | Micro - adhesive deposite device that sustainable confession of automatic ratio of biliquid was glued |
| DE102014016207A1 (en) * | 2014-10-31 | 2016-05-04 | Dürr Systems GmbH | Applicator for application of a job material |
| CN205887347U (en) * | 2016-08-11 | 2017-01-18 | 苏州迈硕自动化设备有限公司 | Dual component resorption formula dispensing valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6112032B2 (en) * | 2014-02-10 | 2017-04-12 | ブラザー工業株式会社 | Liquid cartridge |
| US9816849B2 (en) * | 2015-05-22 | 2017-11-14 | Nordson Corporation | Dispensing apparatus and methods utilizing quick connect member to secure fluid body and actuator body |
-
2018
- 2018-03-27 CN CN201810256671.2A patent/CN108262219B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4052997A (en) * | 1972-11-27 | 1977-10-11 | Lorenzo Bruce L De | Leak detection arrangement for valve having sealing means |
| EP0051698A1 (en) * | 1980-11-06 | 1982-05-19 | Consolidated Papers, Inc. | Paper coating method and apparatus |
| CN1961137A (en) * | 2004-04-27 | 2007-05-09 | 米尔基希斯沃克有限责任公司 | Valve rotating mechanism for exhaust valves, especially for marine diesel engines |
| JP2007313485A (en) * | 2006-05-29 | 2007-12-06 | Nissan Motor Co Ltd | Apparatus and method for supplying high-viscosity fluid |
| CN101199954A (en) * | 2006-12-13 | 2008-06-18 | 诺信公司 | Multi-plate nozzle and method for dispensing random pattern of adhesive filaments |
| CN102852583A (en) * | 2011-06-29 | 2013-01-02 | 卡特彼勒发动机有限责任两合公司 | Valve stem seal for a combustion engine |
| CN103748389A (en) * | 2011-08-31 | 2014-04-23 | 伊利诺斯工具制品有限公司 | Hydraulic seal assembly for a thermoplastic material dispensing valve assembly |
| CN103032627A (en) * | 2011-09-29 | 2013-04-10 | Skf公司 | Valve stem seal |
| CN202832576U (en) * | 2012-08-14 | 2013-03-27 | 巨隆集团芜湖兴隆液压有限公司 | Three-use valve for mining individual hydraulic prop |
| DE102014016207A1 (en) * | 2014-10-31 | 2016-05-04 | Dürr Systems GmbH | Applicator for application of a job material |
| CN104455499A (en) * | 2014-11-28 | 2015-03-25 | 王驭舟 | Combined sealing stop valve |
| CN205074168U (en) * | 2015-09-01 | 2016-03-09 | 深圳市世椿智能装备股份有限公司 | Micro - adhesive deposite device that sustainable confession of automatic ratio of biliquid was glued |
| CN205887347U (en) * | 2016-08-11 | 2017-01-18 | 苏州迈硕自动化设备有限公司 | Dual component resorption formula dispensing valve |
Non-Patent Citations (1)
| Title |
|---|
| 王建义.水力机组推力油槽外循环系统压力波动原因分析.广西电力技术.(第03期),全文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108262219A (en) | 2018-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204627970U (en) | Single-plunger type metering pump and pump head component thereof | |
| CN212189843U (en) | Glue injection valve with overflow device | |
| CN108262219B (en) | Liquid sealing type valve assembly | |
| CA2687054A1 (en) | Rotary valve assembly for an injection nozzle | |
| CN205715028U (en) | A kind of super-pressure hydraulic control check valve | |
| CN104747432A (en) | Single-plunger metering pump and pump head assembly thereof | |
| CN218267295U (en) | Electronic expansion valve | |
| KR20100002165U (en) | A self-balancing type self-compensation sealed valve | |
| CN210178937U (en) | Pressure balance type double-control water spraying valve | |
| CN211288825U (en) | Valve sealing structure and valve with same | |
| CN201288863Y (en) | Superpose installation pilot-controlled check valve | |
| CN201034184Y (en) | Standing ball valve seat structure | |
| CN203214897U (en) | High-pressure self-sealing check valve with low flow resistance | |
| CN208427301U (en) | A kind of liquid sealed type valve member | |
| JP4606576B2 (en) | Coating liquid supply device | |
| JP4474041B2 (en) | Open / close rotary joint with liquid leakage prevention structure | |
| CN116971949A (en) | Liquid supercharging device | |
| CN218761734U (en) | Fluid control valve | |
| CN110185665A (en) | A kind of holding valve | |
| CN217519239U (en) | Valve core structure of water-based pilot valve for mine | |
| CN212839538U (en) | Embedded double-seal rotary valve with six electric opening ports | |
| CN210511008U (en) | Dynamic oil pressure sealing leakage-proof electromagnetic oil injection valve | |
| CN210661571U (en) | Hydraulic control three-piece type combined valve body high-pressure wear-resistant slurry gate valve | |
| US2891566A (en) | Automatic lubricated plug valve | |
| CN213298888U (en) | Electric ball valve capable of accurately controlling flow of cold and hot media |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |