CN113847445A - Plug valve based on anti-sticking structure - Google Patents
Plug valve based on anti-sticking structure Download PDFInfo
- Publication number
- CN113847445A CN113847445A CN202111090345.7A CN202111090345A CN113847445A CN 113847445 A CN113847445 A CN 113847445A CN 202111090345 A CN202111090345 A CN 202111090345A CN 113847445 A CN113847445 A CN 113847445A
- Authority
- CN
- China
- Prior art keywords
- valve
- plug
- protective sleeve
- core assembly
- valve body
- 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.)
- Pending
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 56
- 239000011148 porous material Substances 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 2
- 230000000994 depressogenic effect Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
- F16K5/0407—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/065—Construction of housing; Use of materials therefor of taps or cocks with cylindrical plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
- F16K5/045—Particular coverings and materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
- F16K5/0457—Packings
- F16K5/0478—Packings on the plug
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
The invention relates to a plug valve based on an anti-jamming structure, which comprises: the valve comprises a valve body, a valve core assembly and a valve rod; the valve body is provided with a feed inlet and a discharge outlet; the spool assembly is mounted to the valve stem; the valve core assembly is rotatably arranged in the valve body; plug valve based on anti-sticking structure still includes: the protective sleeve is sleeved on the periphery of the valve core assembly; the protective sleeve is arranged in the valve body; the valve core assembly rotates in the protective sleeve; the protective sleeve is formed with two intercommunicating pores that align with the feed inlet and the discharge outlet, respectively. The valve core assembly has the beneficial effects that the valve body is prevented from being directly contacted with the valve core assembly, so that the normal rotation of the valve core assembly is ensured.
Description
Technical Field
The invention relates to a plug valve based on an anti-blocking structure.
Background
The plug valve is a rotary valve in a closing part or a plunger shape, and the opening or the closing of the valve is realized by rotating 90 degrees to enable a passage port on the plug to be communicated with or separated from a passage port on the valve body. The valve plug may be cylindrical or conical in shape. In a cylindrical valve plug, the passageway is generally rectangular.
The valve body of the conventional plug valve is directly sleeved on the periphery of the valve core assembly and is in direct contact with the valve core assembly, and the valve core assembly is usually a metal body. Due to the processing technology, the inner sides of the passage openings on the two sides of the valve body are both in a seamed edge structure. In the rotating process of the valve core assembly, the edge structure on the inner side of the channel opening can clamp the valve core assembly to cause the phenomenon of blocking, so that the valve core assembly cannot rotate.
Disclosure of Invention
The invention aims to provide a plug valve based on an anti-blocking structure, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a plug valve based on an anti-seize structure comprising: the valve comprises a valve body, a valve core assembly and a valve rod; the valve body is provided with a feed inlet and a discharge outlet; the spool assembly is mounted to the valve stem; the valve core assembly is rotatably arranged in the valve body;
plug valve based on anti-sticking structure still includes: the protective sleeve is sleeved on the periphery of the valve core assembly; the protective sleeve is arranged in the valve body; the valve core assembly rotates in the protective sleeve; the protective sleeve is formed with two intercommunicating pores that align with the feed inlet and the discharge outlet, respectively.
As a further scheme of the invention: the outer wall surface of the protective sleeve is provided with an annular mounting groove; a sealing ring is arranged in the annular mounting groove; the annular mounting groove is in a closed annular surrounding protective sleeve; a part of the annular mounting groove is located below one of the two communication holes and another part of the annular mounting groove is located above the other of the two communication holes.
As a further scheme of the invention: the case subassembly includes: two valve plates, a connecting rod and a return spring; the two valve plates are arranged on two sides of the valve rod, and a flow passage is formed between the two valve plates; the connecting rod penetrates through the valve rod; two valve plates are arranged at two ends of the connecting rod; the reset spring is sleeved on the periphery of the connecting rod, and two ends of the reset spring are located between the valve block and the valve rod.
As a further scheme of the invention: the inner wall surface of the protective sleeve is a cylindrical surface; the valve plate is attached to the cylindrical surface.
As a further scheme of the invention: the number of the connecting rods is two; the number of the return springs is four.
As a further scheme of the invention: the return spring is a tower spring; the big end of the tower spring is contacted with the valve plate; the lower end of the tower spring is contacted with the valve rod.
As a further scheme of the invention: in the circumferential direction of the rotation axis of the valve core assembly, the middle part of the hole wall of the communication hole is gradually sunken towards two sides. Specifically, two side faces of the hole wall of the communicating hole are arc-shaped faces with the middle parts away from each other. More specifically, the communication hole is elliptical. The width of the communicating hole is gradually reduced from the middle to the upper end and the lower end.
As a further scheme of the invention: plug valve based on anti-sticking structure still includes: the positioning pin is used for positioning the relative positions of the protective sleeve and the valve body; the locating pin imbeds in protective sheath and the valve body.
As a further scheme of the invention: the valve body includes: a valve body for housing the valve cartridge assembly and a plug cap removably mounted to the valve body; the valve body main body is provided with a mounting hole for the valve core assembly to pass through for mounting; the plug cover seals the mounting hole; the plug cover part is inserted into the protective sleeve; and sealing rings are arranged between the protective sleeve and the cock cover, between the cock cover and the valve body and between the top of the protective sleeve and the valve body.
As a further scheme of the invention: the protective sleeve is a plastic protective sleeve.
Compared with the prior art, the invention has the beneficial effects that: the valve body is prevented from being in direct contact with the valve core assembly, so that the normal rotation of the valve core assembly is ensured.
The protective sleeve is sleeved on the periphery of the valve core assembly, so that the valve body is prevented from being in direct contact with the valve core assembly, and the normal rotation of the valve core assembly is ensured.
The structure setting of annular mounting groove makes the in-process of protective sheath installation, and the sealing washer is difficult for receiving wearing and tearing and is difficult for the landing.
The structure setting of case subassembly makes two valve blocks can keep the same pressure internal face of laminating the protective sheath, promotes the sealed effect when closing the valve. The valve sealing performance reduction caused by the coaxiality deviation of the valve rod and the valve body during assembly is avoided.
Compare traditional rectangular hole's formation, the structural setting of intercommunicating pore adopts approximate ellipse's shape, thereby realizes closing the valve and slowly reducing flow area and reduce the water hammer impulsive force when closing the valve.
Drawings
FIG. 1 is a perspective view of a plug valve based on an anti-seize feature;
FIG. 2 is a front view of the plug valve of FIG. 1 based on an anti-seize feature;
FIG. 3 is a cross-sectional view taken at A-A of the plug valve of FIG. 2 based on an anti-seize feature;
FIG. 4 is a perspective view of the core assembly, valve stem and boot of the anti-seize plug valve of FIG. 1;
FIG. 5 is a front view of the structure of FIG. 4;
FIG. 6 is a right side view of the structure of FIG. 5;
FIG. 7 is a cross-sectional view at B-B of the structure of FIG. 6;
fig. 8 is an exploded view of the structure of fig. 5.
The plug valve 100 based on the anti-jamming structure comprises a valve body 10, a feeding hole 11, a discharging hole 12, a valve body main body 13, a plug cover 14, a valve core assembly 20, a valve plate 21, a connecting rod 22, a return spring 23, a valve rod 30, a protective sleeve 40, a communication hole 41, an annular mounting groove 42, a sealing ring 421 and a positioning pin 50.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, in an embodiment of the present invention, a plug valve 100 based on an anti-seize structure includes: a valve body 10, a valve core assembly 20 and a valve stem 30. The valve body 10 is formed with a feed port 11 and a discharge port 12. The cartridge assembly 20 is mounted to the valve stem 30. The valve core assembly 20 is rotatably disposed within the valve body 10.
The protective sleeve 40 is sleeved on the periphery of the valve core assembly 20. The protective sleeve 40 is installed into the valve body 10. Because the protective sleeve 40 is a plastic protective sleeve, the valve core assembly 20 is not worn by the contact with the protective sleeve 40 when the valve core assembly 20 rotates. The valve core assembly 20 rotates in the protective sleeve 40, so that the valve body 10 is prevented from being in direct contact with the valve core assembly 20, and the valve core assembly 20 can normally rotate.
In one embodiment, the outer wall of the protective sleeve 40 is provided with an annular mounting groove 42. A sealing ring 421 is arranged in the annular mounting groove 42. The annular mounting groove 42 is in the form of a closed loop around the protective sleeve 40. A part of the annular mounting groove 42 is located below one of the two communication holes 41 and another part of the annular mounting groove 42 is located above the other of the two communication holes 41. Specifically, the annular mounting groove 42 is configured such that the sealing ring 421 is not easily detached and is not easily worn during the process of mounting the protective sleeve 40 into the valve body 10.
As a specific embodiment, the spool assembly 20 includes: two valve plates 21, a connecting rod 22 and a return spring 23. The two valve plates 21 are disposed on two sides of the valve rod 30, and a flow passage is formed between the two valve plates 21. The connecting rod 22 passes through the valve stem 30. Two valve plates 21 are mounted to both ends of the link 22. The return spring 23 is sleeved on the periphery of the connecting rod 22, and two ends of the return spring 23 are located between the valve plate 21 and the valve rod 30.
In one embodiment, the inner wall of the sleeve 40 is cylindrical. The valve plate 21 is attached to the cylindrical surface. The number of the links 22 is two. The number of the return springs 23 is four.
In one embodiment, the return spring 23 is a tower spring. The large end of the tower spring contacts the valve plate 21. The lower end of the tower spring contacts the valve stem 30.
As a specific embodiment, the center of the hole wall of the communication hole 41 is gradually recessed toward both sides in the circumferential direction of the rotation axis of the spool assembly 20.
As a specific embodiment, anti-seize based stopcock valve 100 further comprises: and a positioning pin 50. The positioning pin 50 is used to position the relative positions of the protective sleeve 40 and the valve body 10. The locating pin 50 is embedded in the protective sleeve 40 and the valve body 10.
As a specific embodiment, the valve body 10 includes: a valve body 13 and a plug cover 14. The valve body 13 is adapted to receive the valve core assembly 20. The plug cover 14 is detachably mounted to the valve body 13. The valve body 13 is formed with a mounting hole. The mounting hole is for the cartridge assembly 20 to pass through for installation. The plug cap 14 closes the mounting hole. The plug cap 14 is partially inserted into the protective sleeve 40. Sealing rings 421 are arranged between the protective sleeve 40 and the cock cover 14, between the cock cover 14 and the valve body 13, and between the top of the protective sleeve 40 and the valve body 13. Specifically, the plug valve 100 having the anti-seize structure has high sealing performance as a whole.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A plug valve based on an anti-seize structure comprising: the valve comprises a valve body, a valve core assembly and a valve rod; the valve body is provided with a feeding hole and a discharging hole; the valve core assembly is mounted to the valve stem; the valve core assembly is rotatably arranged in the valve body; its characterized in that, plug valve based on anti-sticking dies structure still includes: the protective sleeve is sleeved on the periphery of the valve core assembly; the protective sleeve is mounted into the valve body; the valve core assembly rotates in the protective sleeve; the protective sleeve is formed with two intercommunicating pores respectively aligned with the feed inlet and the discharge outlet.
2. The plug valve based on the anti-blocking structure is characterized in that the outer wall surface of the protective sleeve is provided with an annular mounting groove; a sealing ring is arranged in the annular mounting groove; the annular mounting groove is in a closed annular shape and surrounds the protective sleeve; a part of the annular mounting groove is located below one of the two communication holes and another part of the annular mounting groove is located above the other of the two communication holes.
3. The anti-seize plug valve of claim 1, wherein the spool assembly includes: two valve plates, a connecting rod and a return spring; the two valve plates are arranged on two sides of the valve rod, and a flow channel is formed between the two valve plates; the connecting rod passes through the valve rod; the two valve plates are arranged at two ends of the connecting rod; the reset spring is sleeved on the periphery of the connecting rod, and two ends of the reset spring are located between the valve plate and the valve rod.
4. The anti-seize plug valve according to claim 3, wherein the inner wall surface of the boot is a cylindrical surface; the valve plate is attached to the cylindrical surface.
5. The anti-seize plug valve according to claim 3, wherein the number of the connecting rods is two; the number of the return springs is four.
6. The anti-seize plug valve according to claim 3, wherein the return spring is a tower spring; the large end of the tower spring is in contact with the valve plate; the lower end of the tower spring is in contact with the valve rod.
7. The plug valve based on the anti-seize structure according to claim 1, wherein the center of the hole wall of the communication hole is gradually depressed toward both sides in the circumferential direction of the rotation axis of the spool assembly.
8. The anti-seize plug valve of claim 1, further comprising: the positioning pin is used for positioning the relative positions of the protective sleeve and the valve body; the locating pin is embedded in the protective sleeve and the valve body.
9. The anti-seize plug valve of claim 1, wherein said valve body comprises: a valve body for receiving the valve core assembly and a plug cover removably mounted to the valve body; the valve body main body is provided with a mounting hole for the valve core assembly to pass through for mounting; the plug cap closes the mounting hole; the plug cover portion is inserted into the protective sheath; the protective sheath with between the plug cap, the plug cap with between the valve body main part and the top of protective sheath with all be equipped with the sealing washer between the valve body main part.
10. The anti-seize plug valve of claim 1, wherein said protective sleeve is a plastic protective sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111090345.7A CN113847445A (en) | 2021-09-17 | 2021-09-17 | Plug valve based on anti-sticking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111090345.7A CN113847445A (en) | 2021-09-17 | 2021-09-17 | Plug valve based on anti-sticking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113847445A true CN113847445A (en) | 2021-12-28 |
Family
ID=78974474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111090345.7A Pending CN113847445A (en) | 2021-09-17 | 2021-09-17 | Plug valve based on anti-sticking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113847445A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2987295A (en) * | 1959-07-24 | 1961-06-06 | Duriron Co | Plug valves |
| US4113228A (en) * | 1976-02-02 | 1978-09-12 | Frye James A | Rotary plug valve |
| CN102829207A (en) * | 2012-08-03 | 2012-12-19 | 浙江恒森实业集团有限公司 | Electrically adjusted self-compensating plug valve |
| CN206904277U (en) * | 2017-03-09 | 2018-01-19 | 佛山市顺德区港华燃气有限公司 | A kind of fuel gas plug valve |
| CN209262295U (en) * | 2019-01-10 | 2019-08-16 | 中石化四机石油机械有限公司 | A kind of high voltagehigh frequency time switch taper adjustable sealing structure plug valve |
| CN112879587A (en) * | 2016-06-23 | 2021-06-01 | S.P.M.流量控制股份有限公司 | Large-aperture plug valve |
| CN114321426A (en) * | 2021-12-30 | 2022-04-12 | 浙江恒森实业集团有限公司 | Plug valve and water air conditioner |
| CN219263233U (en) * | 2021-09-17 | 2023-06-27 | 浙江恒森实业集团有限公司 | Plug valve based on anti-blocking structure |
| CN116557564A (en) * | 2022-01-27 | 2023-08-08 | 浙江恒森实业集团有限公司 | Plug valve, refrigerant control device of motor vehicle air conditioner, motor vehicle air conditioner and motor vehicle |
-
2021
- 2021-09-17 CN CN202111090345.7A patent/CN113847445A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2987295A (en) * | 1959-07-24 | 1961-06-06 | Duriron Co | Plug valves |
| US4113228A (en) * | 1976-02-02 | 1978-09-12 | Frye James A | Rotary plug valve |
| CN102829207A (en) * | 2012-08-03 | 2012-12-19 | 浙江恒森实业集团有限公司 | Electrically adjusted self-compensating plug valve |
| CN112879587A (en) * | 2016-06-23 | 2021-06-01 | S.P.M.流量控制股份有限公司 | Large-aperture plug valve |
| CN206904277U (en) * | 2017-03-09 | 2018-01-19 | 佛山市顺德区港华燃气有限公司 | A kind of fuel gas plug valve |
| CN209262295U (en) * | 2019-01-10 | 2019-08-16 | 中石化四机石油机械有限公司 | A kind of high voltagehigh frequency time switch taper adjustable sealing structure plug valve |
| CN219263233U (en) * | 2021-09-17 | 2023-06-27 | 浙江恒森实业集团有限公司 | Plug valve based on anti-blocking structure |
| CN114321426A (en) * | 2021-12-30 | 2022-04-12 | 浙江恒森实业集团有限公司 | Plug valve and water air conditioner |
| CN116557564A (en) * | 2022-01-27 | 2023-08-08 | 浙江恒森实业集团有限公司 | Plug valve, refrigerant control device of motor vehicle air conditioner, motor vehicle air conditioner and motor vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4747578A (en) | Rotary valve with pressure urged sealing member | |
| US5327923A (en) | Valve for installation on a pressurized fluid flow line | |
| NZ199353A (en) | Battery vent plug | |
| CN219263233U (en) | Plug valve based on anti-blocking structure | |
| CN113847445A (en) | Plug valve based on anti-sticking structure | |
| CN210461786U (en) | Control valve | |
| CA2122501C (en) | Balanced, steam control valve assembly, and a plug-type valving element therefor | |
| US3923284A (en) | Faucet valve | |
| CN116557564A (en) | Plug valve, refrigerant control device of motor vehicle air conditioner, motor vehicle air conditioner and motor vehicle | |
| CN211475030U (en) | Press valve core | |
| CN204922011U (en) | Flushing solenoid valve | |
| US5143349A (en) | Valve with flow shield | |
| CN209977355U (en) | Check gate valve for explosion-proof meter | |
| US2209135A (en) | Valve assembly | |
| CN219033412U (en) | Tap connecting device and floor type tap | |
| CN220770207U (en) | Push type adjusting valve core and control valve thereof | |
| CN207500509U (en) | Spool is automatically closed in a kind of vapour-pressure type | |
| CN217683422U (en) | Explosion-proof valve | |
| CN218953686U (en) | Area difference direct-acting overflow valve | |
| CN211924920U (en) | Special-shaped sealing ring for slowly opening faucet and slowly opening faucet | |
| CN212107148U (en) | Novel tap handle opening and closing structure | |
| CN217177481U (en) | Plug valve, refrigerant control device of motor vehicle air conditioner, motor vehicle air conditioner and motor vehicle | |
| KR100334123B1 (en) | Double interception and open device for ball valve | |
| CN218598868U (en) | Decompression valve of coffee machine | |
| CN214766295U (en) | Adjustable spray gun |
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 |