CN112161068A - Stop valve adopting all-poly-tetrachloroethylene - Google Patents
Stop valve adopting all-poly-tetrachloroethylene Download PDFInfo
- Publication number
- CN112161068A CN112161068A CN202011044959.7A CN202011044959A CN112161068A CN 112161068 A CN112161068 A CN 112161068A CN 202011044959 A CN202011044959 A CN 202011044959A CN 112161068 A CN112161068 A CN 112161068A
- Authority
- CN
- China
- Prior art keywords
- valve
- shut
- valve rod
- rod
- fixedly connected
- 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.)
- Granted
Links
- 229950011008 tetrachloroethylene Drugs 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 39
- 210000004907 gland Anatomy 0.000 claims description 21
- 238000003754 machining Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 5
- 230000004927 fusion Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 239000012530 fluid Substances 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
- 238000005452 bending Methods 0.000 abstract description 6
- 238000005381 potential energy Methods 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 230000000630 rising effect Effects 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 7
- -1 Polytetrafluoroethylene Polymers 0.000 description 5
- 230000009471 action Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
-
- 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
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a stop valve adopting full poly-tetrachloroethylene, which comprises: the valve core rotates along with the valve rod, so that the valve core and the valve body are slowly separated, the kinetic energy of fluid is reduced and converted into pressure potential energy, meanwhile, when the fluid enters the upper half part of the valve body, the impact energy of the fluid is eliminated through the buffering of an expansion chamber, the water hammer is reduced, and meanwhile, the valve rod is guided and corrected through a guide plate in the process of rising or falling, the bending of the valve rod is effectively avoided, the bending resistance of the valve rod is greatly increased, and the internal leakage in the valve body is prevented.
Description
Technical Field
The invention relates to the technical field of stop valves, in particular to a stop valve adopting all-poly-tetrachloroethylene.
Background
The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur. The connection mode is divided into three types: flange connection, screw thread connection and welding connection. Polytetrafluoroethylene, commonly known as "plastic king", is a high molecular polymer prepared by polymerization using tetrafluoroethylene as a monomer. The white wax-like paint has the advantages of good translucence, heat resistance and cold resistance, and can be used for a long time at-180-260 ℃. The polytetrafluoroethylene valve has the characteristics of acid resistance, alkali resistance and resistance to various organic solvents.
1. When using polytetrafluoroethylene preparation valve among the prior art, especially during the stop valve, valve rod bending resistance is relatively weak, and in polytetrafluoroethylene stop valve use, the valve rod receives and produces bending deformation easily under the water hammer effect of water impact, causes the stop valve to produce interior hourglass easily.
2. When the valve is made of polytetrafluoroethylene in the prior art, particularly when the stop valve is used, the valve core and the valve rod are connected insecurely and are easy to fall off, so that the valve fails.
Disclosure of Invention
The invention aims to provide a stop valve adopting all-poly tetrachloroethylene, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a shut-off valve using all poly (tetrachloroethylene), comprising: valve body, valve-stem nut, valve rod and case, there is valve-stem nut outside valve body top central authorities through screw thread fixedly connected with valve-stem nut inside through joint swing joint valve rod, and the outer wall of valve rod bottom passes through screw thread fixedly connected with gland, through joint fixedly connected with case between gland bottom and the valve rod outer wall, valve body top inner wall is located the valve rod outside and passes through butt fusion fixedly connected with deflector.
Preferably, the valve body further comprises: the water inlet has been seted up to valve body one side, the water outlet has been seted up to valve body one side of keeping away from water inlet one side, the expansion chamber has been seted up to first one side inside of valve body, valve body top central authorities are located the valve rod outside and pass through joint fixedly connected with thread seal, the weight port has been seted up to valve body lower half one side outside.
Preferably, the guide plate further includes: and the center of the guide plate is positioned on the outer side of the valve rod and is fixedly connected with an O-shaped ring through a clamping joint for sealing between the guide plate and the valve rod.
Preferably, the valve stem further comprises: hand wheel, ladder pole and stopper, valve rod bottom one end has the ladder pole through the machining, the valve rod bottom is located ladder pole below and has the stopper through the machining, joint fixedly connected with hand wheel is passed through to valve rod top one end, and the rotation of the valve rod of being convenient for through the hand wheel is connected and is fixed through the cooperation of ladder pole and stopper the case of being convenient for.
Preferably, the gland further comprises: the pressure cover is internally positioned above the valve core and is fixedly connected with the pressure plate through clamping, and the pressure cover is used for connecting the valve rod and the valve core through the pressure cover and the pressure plate to prevent the valve core from being separated.
Preferably, the valve cartridge further comprises: the stepped groove is formed in the center of the inner portion of the valve core, and the valve core and the valve rod are connected conveniently.
Preferably, the center inside the pressing sleeve is provided with a cross groove, and the pressing plate is clamped above the cross groove obtained by the pressing sleeve and used for clamping the valve core.
Preferably, the contour of the inner wall of the lower half part of the cross groove of the pressing sleeve is matched with the contour of the outer wall of the upper half part of the valve core, so that the valve core is clamped firmly.
Preferably, the gland, the pressing sleeve, the pressing plate and the valve rod are in transition fit, so that the gland and the parts of the gland can be driven to rotate together in the rotating process of the valve rod, the valve core can rotate along with the gland, and the valve core can be opened and closed smoothly.
Preferably, the center inside the valve rod nut is rotatably connected with the valve rod through threads and used for ascending and descending the valve rod and driving the valve core to ascend and descend to complete opening and closing of the stop valve.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention realizes that when the stop valve adopting the all-polytetrafluoroethylene is used, the fluid enters the inside of the stop valve through the water inlet, the closing of the stop valve is carried out through the sealing between the valve core and the valve body, when the stop valve needs to be opened, the valve rod is rotated through the hand wheel, the valve rod is lifted under the screw action of the valve rod nut and the screw thread of the screw thread sealing ring, the valve rod drives the valve core and the gland assembly to lift together, the valve core rotates together with the valve rod in the lifting process, so that the valve core and the valve body are slowly separated, the kinetic energy of the fluid is reduced and converted into the pressure potential energy, meanwhile, when the fluid enters the upper half part of the valve body, the impact energy of the fluid is eliminated through the buffering of the expansion chamber, the occurrence of water hammer is reduced, and simultaneously, the bending of the valve rod is effectively avoided through the guiding and, greatly increasing the bending resistance of the valve rod and preventing the internal leakage of the valve body.
2. According to the invention, through the arrangement of the gland, the pressing sleeve and the pressing plate, when the stop valve adopting the all-polytetrafluoroethylene is used, the gland, the pressing sleeve and the pressing plate are in transition fit with the valve rod, so that the gland and parts thereof are driven to rotate together in the rotating process of the valve rod, the valve core also rotates along with the valve rod, the opening and closing stroke of the valve core is increased, the pulling force between the valve core and the valve rod is reduced, and the valve core is prevented from being separated.
Drawings
FIG. 1 is a schematic cross-sectional view of the overall front view structure of the present invention;
FIG. 2 is a schematic view of the overall front view structure of the present invention;
FIG. 3 is a schematic sectional view of the main view structure of the valve body of the present invention;
FIG. 4 is a schematic cross-sectional front view of the valve stem attachment of the present invention;
fig. 5 is a front cross-sectional enlarged schematic view of the valve core connecting structure of the present invention.
In the figure: 1-a valve body; 101-a water inlet; 102-an expansion chamber; 103-thread sealing ring; 104-water outlet; 105-a weight port; 2-valve stem nut; 3-a guide plate; 301-O-ring; 4-a valve stem; 401-hand wheel; 402-a ladder bar; 403-a limiting block; 5-pressing the cover; 501-pressing sleeve; 502-a platen; 6-valve core; 601-step groove.
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. 1-5, the present invention provides a technical solution: a shut-off valve using all poly (tetrachloroethylene), comprising: valve body 1, valve-stem nut 2, valve rod 4 and case 6, 1 top central authorities outside of valve body has valve rod 4 through screw thread fixedly connected with valve-stem nut 2 the inside of 1 central authorities of valve body through joint swing joint, and 4 bottom outer walls of valve rod pass through screw thread fixedly connected with gland 5, and through joint fixedly connected with case 6 between 5 bottoms of gland and the 4 outer walls of valve rod, 1 top inner wall of valve body is located the 4 outside of valve rod and passes through butt fusion fixedly connected with deflector 3.
The valve body 1 further includes: water inlet 101, expansion chamber 102, threaded seal 103 and weight port 105, water inlet 101 has been seted up to 1 one side of valve body, and valve body 1 is kept away from water inlet 101 one side and has been seted up delivery port 104, and expansion chamber 102 has been seted up to 1 first one side inside of valve body, and 1 top central authorities of valve body are located the valve rod 4 outside and have been seted up weight port 105 through joint fixedly connected with threaded seal 103, 1 one side outside of lower half of valve body, and deflector 3 still includes: o type circle 301, deflector 3 central authorities are located the valve rod 4 outside and pass through joint fixedly connected with O type circle 301 for sealed between deflector 3 and the valve rod 4.
The valve stem 4 further includes: hand wheel 401, ladder pole 402 and stopper 403, valve rod 4 bottom one end has ladder pole 402 through the machining, and valve rod 4 bottom is located ladder pole 402 below and has stopper 403 through the machining, and joint fixedly connected with hand wheel 401 is passed through to valve rod 4 top one end, and the rotation of valve rod 4 of being convenient for through hand wheel 401 is connected and is fixed through the cooperation of ladder pole 402 and stopper 402 case 6 of being convenient for, and gland 5 still includes: pressing cover 501 and clamp plate 502, 5 bottom outer walls of gland press cover through screw thread fixedly connected with press cover 501, press cover 501 inside to be located 6 tops of case through joint fixedly connected with clamp plate 502 for through pressing cover 501 and clamp plate 502 to be connected valve rod 4 and case 6, prevent that case 6 from breaking away from, case 6 still includes: the stepped groove 601 is formed in the center of the inner portion of the valve core 6, and the stepped groove 601 is formed in the center of the inner portion of the valve core 6, so that the valve core 6 and the valve rod 4 can be conveniently connected.
The center inside the pressing sleeve 501 is provided with a cross groove, the pressing plate 502 is clamped above the cross groove of the pressing sleeve 501 and used for clamping the valve element 6, the contour of the inner wall of the lower half part of the cross groove of the pressing sleeve 501 is matched with the contour of the outer wall of the upper half part of the valve element 6, so that the valve element 6 is clamped firmly, the pressing cover 5, the pressing sleeve 501, the pressing plate 502 and the valve rod 4 are in transition fit, the pressing cover 5 and parts thereof are driven to rotate together in the rotating process of the valve rod 4, the valve element 6 is driven to rotate along with the valve element 6, the valve element 6 is opened and closed smoothly, the center inside of the valve rod nut 2 is connected with the valve rod 4 through screw threads in a rotating mode.
The working principle is as follows: when the stop valve adopting the all-polytetrafluoroethylene is used, fluid enters the inside of the stop valve through the water inlet, the stop valve is closed through the seal between the valve core 6 and the valve body 1, when the stop valve needs to be opened, the valve rod 4 is rotated through the hand wheel 401, under the screw action of the valve rod nut 2 and the screw thread sealing ring 103, the valve rod 4 is lifted, the valve core 6 and the gland 5 assembly are driven by the valve rod 4 to lift together, the valve core 6 rotates together with the valve rod 4 in the lifting process, the valve core 6 is slowly separated from the valve body 1, the kinetic energy of the fluid is reduced and converted into pressure potential energy, meanwhile, when the fluid enters the upper half part of the valve body 1, the impact energy of the fluid is eliminated through the buffer of the expansion chamber 102, the occurrence of water hammer is reduced, meanwhile, the guide and the correction are carried out through the guide plate 3 in the lifting or descending process of the valve rod, the internal leakage of the valve body 1 is prevented, and the pressing cover 5, the pressing sleeve 501, the pressing plate 502 and the valve rod 4 are in transition fit, so that the pressing cover 5 and parts of the pressing cover are driven to rotate together in the rotation process of the valve rod 4, the valve core 6 also rotates along with the pressing cover, the opening and closing stroke of the valve core 6 is increased, the pulling force between the valve core 6 and the valve rod 4 is reduced, and the valve core 6 is prevented from being separated from the pressing cover.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A stop valve using all-poly-tetrachloroethylene, comprising:
a valve body (1);
a stem nut (2);
a valve stem (4);
a valve core (6) is arranged on the valve body,
wherein, the outside of valve body (1) top central authorities is through screw thread fixedly connected with valve-stem nut (2) valve body (1) central authorities inside has valve rod (4) through joint swing joint, and valve rod (4) bottom outer wall passes through screw thread fixedly connected with gland (5), through joint fixedly connected with case (6) between gland (5) bottom and valve rod (4) outer wall, valve body (1) top inner wall is located valve rod (4) outside through butt fusion fixedly connected with deflector (3).
2. The shut-off valve of claim 1, wherein the shut-off valve is made of perchloroethylene: the valve body (1) further comprises:
a water inlet (101);
an expansion chamber (102);
a threaded seal ring (103);
a weight port (105),
wherein, water inlet (101) have been seted up to valve body (1) one side, water outlet (104) have been seted up to water inlet (101) one side is kept away from in valve body (1), expansion chamber (102) have been seted up to first one side inside of valve body (1), valve body (1) top central authorities are located the valve rod (4) outside through joint fixedly connected with threaded seal circle (103), weight port (105) have been seted up to valve body (1) lower half one side outside.
3. The shut-off valve of claim 1, wherein the shut-off valve is made of perchloroethylene: the guide plate (3) further comprises: o type circle (301), deflector (3) central authorities are located the valve rod (4) outside and pass through joint fixedly connected with O type circle (301).
4. The shut-off valve of claim 1, wherein the shut-off valve is made of perchloroethylene: the valve stem (4) further comprises:
a hand wheel (401);
a stair rod (402);
a limiting block (403) is arranged on the upper surface of the frame,
wherein, valve rod (4) bottom one end has ladder pole (402) through machining, valve rod (4) bottom is located ladder pole (402) below and is passed through machining stopper (403), joint fixedly connected with hand wheel (401) is passed through to valve rod (4) top one end.
5. The shut-off valve of claim 1, wherein the shut-off valve is made of perchloroethylene: the gland (5) further comprises:
a pressing sleeve (501);
a pressure plate (502),
the outer wall of the bottom of the gland (5) is fixedly connected with a pressing sleeve (501) through threads, and a pressing plate (502) is fixedly connected above the valve core (6) inside the pressing sleeve (501) through clamping.
6. The shut-off valve of claim 1, wherein the shut-off valve is made of perchloroethylene: the valve core (6) further comprises: the valve core (6) is provided with a stepped groove (601) at the center inside.
7. The shut-off valve of claim 5, wherein the shut-off valve is made of perchloroethylene: the pressing sleeve (501) is provided with a cross groove in the center, and the pressing plate (502) is clamped above the cross groove formed in the pressing sleeve (501).
8. The shut-off valve of claim 5, wherein the shut-off valve is made of perchloroethylene: the contour of the inner wall of the lower half part of the cross groove of the pressing sleeve (501) is matched with the contour of the outer wall of the upper half part of the valve core (6).
9. The shut-off valve of claim 5, wherein the shut-off valve is made of perchloroethylene: the gland (5), the pressing sleeve (501), the pressing plate (502) and the valve rod (4) are in transition fit.
10. The shut-off valve of claim 1, wherein the shut-off valve is made of perchloroethylene: the center inside the valve rod nut (2) is rotatably connected with the valve rod (4) through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011044959.7A CN112161068B (en) | 2020-09-29 | 2020-09-29 | Stop valve adopting perchloroethylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011044959.7A CN112161068B (en) | 2020-09-29 | 2020-09-29 | Stop valve adopting perchloroethylene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112161068A true CN112161068A (en) | 2021-01-01 |
| CN112161068B CN112161068B (en) | 2024-04-19 |
Family
ID=73862117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011044959.7A Active CN112161068B (en) | 2020-09-29 | 2020-09-29 | Stop valve adopting perchloroethylene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112161068B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898782A (en) * | 2021-10-12 | 2022-01-07 | 精工阀门集团有限公司 | Valve rod positioning and guiding device of oxygen stop valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076626U (en) * | 1990-06-20 | 1991-05-08 | 林乃凯 | Full-plastic reinforced stop valve |
| CN101225885A (en) * | 2007-01-17 | 2008-07-23 | 江苏明江阀业有限公司 | Fluoroplastics whole lining stop valve special for alkali-chloride |
| CN105090542A (en) * | 2015-09-16 | 2015-11-25 | 上海沪东造船阀门有限公司 | Ultralow-temperature stainless steel welding type stop valve for liquefied natural gas ship |
| CN205026112U (en) * | 2015-09-30 | 2016-02-10 | 山东益都阀门集团股份有限公司 | Marine stop valve |
| CN207921432U (en) * | 2018-01-26 | 2018-09-28 | 江苏宝瑞创流体科技有限公司 | Multi-functional reusable shut-off valve |
| CN208123456U (en) * | 2018-04-10 | 2018-11-20 | 盐城申宇科技服务有限公司 | A kind of shut-off valve with protection mechanism |
-
2020
- 2020-09-29 CN CN202011044959.7A patent/CN112161068B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076626U (en) * | 1990-06-20 | 1991-05-08 | 林乃凯 | Full-plastic reinforced stop valve |
| CN101225885A (en) * | 2007-01-17 | 2008-07-23 | 江苏明江阀业有限公司 | Fluoroplastics whole lining stop valve special for alkali-chloride |
| CN105090542A (en) * | 2015-09-16 | 2015-11-25 | 上海沪东造船阀门有限公司 | Ultralow-temperature stainless steel welding type stop valve for liquefied natural gas ship |
| CN205026112U (en) * | 2015-09-30 | 2016-02-10 | 山东益都阀门集团股份有限公司 | Marine stop valve |
| CN207921432U (en) * | 2018-01-26 | 2018-09-28 | 江苏宝瑞创流体科技有限公司 | Multi-functional reusable shut-off valve |
| CN208123456U (en) * | 2018-04-10 | 2018-11-20 | 盐城申宇科技服务有限公司 | A kind of shut-off valve with protection mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898782A (en) * | 2021-10-12 | 2022-01-07 | 精工阀门集团有限公司 | Valve rod positioning and guiding device of oxygen stop valve |
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| Publication number | Publication date |
|---|---|
| CN112161068B (en) | 2024-04-19 |
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