CN111271476A - Stop valve - Google Patents
Stop valve Download PDFInfo
- Publication number
- CN111271476A CN111271476A CN202010065253.2A CN202010065253A CN111271476A CN 111271476 A CN111271476 A CN 111271476A CN 202010065253 A CN202010065253 A CN 202010065253A CN 111271476 A CN111271476 A CN 111271476A
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- Prior art keywords
- valve
- piston
- hole
- plug
- communicating pipe
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- 238000004891 communication Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract description 5
- 239000004579 marble Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002035 prolonged effect Effects 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
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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
- F16K1/32—Details
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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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a stop valve which comprises a valve body, wherein the valve body is provided with a valve cavity with an opening at the upper end, and a valve cover is fixedly arranged at the opening at the upper end of the valve cavity of the valve body; the lower end of the valve body is provided with a first communicating pipe communicated with the valve cavity, and the side surface of the valve body is provided with a second communicating pipe communicated with the valve cavity; a first valve disc for controlling the on-off of the first communicating pipe is arranged at the upper end of the first communicating pipe in the valve cavity, a valve block is fixedly mounted on the first valve disc, and a valve core assembly for controlling the on-off of the second communicating pipe is arranged on the side face of the valve block; the valve cover is in threaded connection with a screw rod, the lower end of the screw rod is located in the valve cavity and is connected with the valve block to control the valve block to move up and down, and the valve core assembly moves axially along the second communicating pipe; the stop valve is simple in structure, and can close and seal the valve port of the second communicating pipe while the main valve port of the first communicating pipe is closed, so that bidirectional stop is realized, and the stop valve is safe and reliable.
Description
Technical Field
The invention belongs to the technical field of pipeline valves, and particularly relates to a bidirectional stop valve.
Background
At present, the known stop valve is stopped by a valve core. Because the majority adopts the stroke to turn off, can not close the position easily, or often there is impurity, when impurity remains on sealed face, can make the sealed face of stop valve can not reliably seal when closing the stop valve, easily make the stop valve the condition such as leakage appear, a current stop valve is like a two-way stop valve of chinese patent application No. 201210466469.5, because its two chock plugs control through a screw rod, make its two valve ports must realize sealed just can close the stop valve simultaneously, sealed effect is unreliable, when a valve port has impurity to remain can not completely close, another valve port can not realize sealing, just so caused and revealed the hidden danger.
Disclosure of Invention
The invention aims to provide a stop valve which is simple in structure, can close and seal a valve port of a second communicating pipe while a main valve port of a first communicating pipe is closed, so that bidirectional stop is realized, and the stop valve is safe and reliable.
In order to achieve the purpose, the invention provides the following technical scheme: a stop valve comprises a valve body, wherein the valve body is provided with a valve cavity with an upper end opening, and a valve cover is fixedly arranged at the upper end opening of the valve cavity of the valve body; the lower end of the valve body is provided with a first communicating pipe communicated with the valve cavity, and the side surface of the valve body is provided with a second communicating pipe communicated with the valve cavity; a first valve disc for controlling the on-off of the first communicating pipe is arranged at the upper end of the first communicating pipe in the valve cavity, a valve block is fixedly mounted on the first valve disc, and a valve core assembly for controlling the on-off of the second communicating pipe is arranged on the side face of the valve block; the valve cover is in threaded connection with a screw rod, the lower end of the screw rod is located in the valve cavity and connected with the valve block to control the valve block to move up and down, and the valve core assembly moves axially along the second communicating pipe.
According to the technical scheme, when the stop valve is opened, the screw rod is rotated to enable the stop valve to move upwards, the valve core assembly is controlled to open the second communicating pipe when the screw rod moves upwards, and after the second communicating pipe is completely opened, the screw rod is continuously rotated to enable the second communicating pipe to drive the valve block and the first valve disc installed on the valve block to move upwards to open the first communicating pipe; when the stop valve is closed, the screw rod is rotated to enable the stop valve to move downwards, and when the screw rod moves downwards, the screw rod continues to be rotated to enable the control valve core assembly to close the second communicating pipe, so that bidirectional stop is realized, and the stop valve is safe and reliable.
In a further technical scheme, a vertically downward guide sliding rod is fixedly installed in the valve cover, and the valve block is connected to the guide sliding rod in a sliding manner; the guide sliding rod is arranged to prevent the valve block from rotating in the up-and-down movement process, and meanwhile, the valve block is guaranteed to move more stably.
In a further technical scheme, the valve core assembly comprises a first piston and a first plug, a mounting hole is formed in the side face, facing the second communicating pipe, of the valve block along the axial direction of the second communicating pipe, and the first plug is fixedly mounted at the opening end of the mounting hole; the first piston is connected in the mounting hole in a sliding manner; a first piston rod penetrating through the first plug is arranged on the first piston in an axially extending mode along the mounting hole, a second valve disc used for controlling the on-off of a second communicating pipe is fixedly mounted at one end, located outside the mounting hole, of the first piston rod, and a first spring used for forcing the first piston to move in the direction away from the first plug is arranged between the first piston and the first plug in the mounting hole;
a piston hole with an upper end opening coaxial with the screw rod is arranged in the valve block, an upper plug is fixedly installed at the upper end opening of the piston hole, a piston body is connected in the piston hole in a sliding mode, an upper piston rod penetrating through the upper plug is arranged on the piston body in an axially extending mode along the piston hole, and the upper end of the upper piston rod is fixedly connected with the lower end of the screw rod in the axial direction and is connected with the lower end of the screw rod in a sliding mode along the circumferential direction; a first cavity is formed between the lower end of the piston body and the bottom of the piston hole in the piston hole, a first oil hole for communicating the valve cavity with the first cavity is formed in the piston body, and a one-way valve assembly for controlling liquid to flow into the first cavity is arranged in the first oil hole;
a second chamber is formed between the first piston and the bottom of the mounting hole in the mounting hole, and a second oil hole used for communicating the first chamber with the second chamber is formed in the bottom of the mounting hole in the valve block.
Through above-mentioned technical scheme, when its case subassembly was assembled, need fill the medium that the stop valve carried in first chamber and the second chamber through first oilhole and second oilhole.
In a further technical scheme, the upper end of the upper piston rod is provided with an installation groove with an opening at the upper end, the circumferential side surface of the lower end of the screw rod is provided with a convex shoulder which is rotatably connected in the installation groove, and the opening of the installation groove is in threaded connection with a baffle ring which is in sliding connection with the convex shoulder.
In a further technical scheme, a first through hole communicated with the mounting hole is formed in the first plug, and a second through hole communicated with the piston hole is formed in the upper plug.
In a further technical scheme, the check valve assembly comprises a marble, a second spring and a hollow second plug, a slotted hole communicated with the first oil hole is formed in the lower end of the piston body, the marble is located in the slotted hole and used for controlling the connection and disconnection of the first oil hole, the second plug is fixedly installed at an opening at the lower end of the slotted hole, and the second spring is located between the second plug and the marble and used for forcing the marble to be tightly pressed on the first oil hole.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
(1) when the stop valve is closed, the medium in the stop valve is used for squeezing and controlling the second valve disc to be tightly pressed on the second communicating pipe, and in addition, the valve port of the second communicating pipe is also closed and sealed when the main valve port of the first communicating pipe is closed, so that the bidirectional stop is realized, and the safety and the reliability are realized;
(2) the opening of the second valve disc is controlled by using the same medium as the conveying medium, so that the valve is more convenient;
(3) all operations can be completed only by rotating the screw rod, and the operation is simple and convenient;
(4) when the first valve disc or the second valve disc cannot be closed in place due to impurities, the closing of the other valve disc is not influenced, and the reliability of the stopping function is high; when the first valve disc cannot be closed in place, the second valve disc can reliably block the second communicating pipe under the action of medium pressure because the sealing surface of the second valve disc is large; when the first valve disc is closed in place and the second valve disc is contaminated, the closing of the first valve disc is also unaffected.
Drawings
FIG. 1 is a cross-sectional view of the present invention with the first valve disc closed and the second valve disc open;
FIG. 2 is a cross-sectional view of the first and second valve discs of the present invention when both discs are closed;
FIG. 3 is a cross-sectional view of the present invention with both the first and second valve discs open;
fig. 4 is an enlarged schematic view of a portion a in fig. 1.
Detailed Description
Referring to fig. 1-4, a stop valve includes a valve body 21, the valve body 21 has a valve cavity 211 with an upper opening, and a valve cover 13 is fixedly installed on the valve body 21 at the upper opening of the valve cavity 211; the lower end of the valve body 21 is provided with a first communicating pipe 22 communicated with the valve cavity 211, and the side surface is provided with a second communicating pipe 23 communicated with the valve cavity 211; a first valve disc 6a for controlling the on-off of the first communicating pipe 22 is arranged at the upper end of the first communicating pipe 22 in the valve cavity 211, a valve block 3 is fixedly installed on the first valve disc 6a, a vertically downward guide slide rod 10 is fixedly installed in the valve cover 13, and the valve block 3 is slidably connected to the guide slide rod 10; the arrangement of the guide sliding rod 10 can prevent the valve block 3 from rotating in the up-and-down movement process, and meanwhile, the valve block 3 can be ensured to move more stably. A valve core assembly for controlling the on-off of the second communicating pipe 23 is arranged on the side surface of the valve block 3; the valve cover 13 is in threaded connection with a screw rod 1, the lower end of the screw rod 1 is located in the valve cavity 211 and is connected with the valve block 3 for controlling the valve block 3 to move up and down and controlling the valve core assembly to move axially along the second communicating pipe 23. And a valve wheel 24 is fixedly arranged at the upper end of the screw rod 1.
The valve core assembly comprises a first piston 4a1 and a first plug 11, the valve block 3 is provided with a mounting hole 3e on the side facing the second communication pipe 23 along the axial direction of the second communication pipe 23, and the first plug 11 is fixedly mounted at the opening end of the mounting hole 3 e; the first piston 4a1 is slidably connected in the mounting hole 3 e; a first piston rod 4a penetrating through the first plug 11 is arranged on the first piston 4a1 in an axial direction of the mounting hole 3e in an extending manner, a second valve disc 6b for controlling the on-off of the second communication pipe 23 is fixedly mounted at one end of the first piston rod 4a located outside the mounting hole 3e, and a first spring 5 for forcing the first piston 4a1 to move in a direction away from the first plug 11 is arranged between the first piston 4a1 and the first plug 11 in the mounting hole 3 e.
A piston hole 3d which is coaxial with the screw rod 1 and has an opening at the upper end is arranged in the valve block 3, an upper plug 9 is fixedly arranged at the opening at the upper end of the piston hole 3d, a piston body 201 is connected in the piston hole 3d in a sliding manner, an upper piston rod 2 which penetrates through the upper plug 9 is arranged on the piston body 201 in an axially extending manner along the piston hole 3d, and the upper end of the upper piston rod 2 is fixedly connected with the lower end of the screw rod 1 in the axial direction and is connected with the lower end of the screw rod 1 in a sliding; a first chamber 3c is formed in the piston hole 3d between the lower end of the piston body 201 and the bottom of the piston hole 3d, a first oil hole 2a for communicating the valve cavity 211 with the first chamber 3c is formed in the piston body 201, and a check valve assembly for controlling the liquid to flow into the first chamber 3c is formed in the first oil hole 2 a; the second chamber 3a is formed in the mounting hole 3e between the first piston 4a1 and the bottom of the mounting hole 3e, and a second oil hole 3b for communicating the first chamber 3c with the second chamber 3a is provided in the valve block 3 at the bottom of the mounting hole 3 e.
The upper end of the upper piston rod 2 is provided with an installation groove 202 with an opening at the upper end, the circumferential side surface of the lower end of the screw rod 1 is provided with a convex shoulder 101 rotatably connected in the installation groove 202, and the opening of the installation groove 202 is in threaded connection with a stop ring 2c in sliding connection with the convex shoulder 101.
A first through hole 11a communicated with the mounting hole 3e is formed in the first plug 11, and a second through hole 9a communicated with the piston hole 3d is formed in the upper plug 9. The check valve assembly comprises a marble 7, a second spring 8 and a hollow second plug 81, wherein the lower end of the piston body 201 is provided with a slotted hole 203 communicated with the first oil hole 2a, the marble 7 is positioned in the slotted hole 203 and used for controlling the on-off of the first oil hole 2a, the second plug 81 is fixedly arranged at the opening at the lower end of the slotted hole 203, and the second spring 8 is positioned between the second plug 81 and the marble 7 and used for forcing the marble 7 to be tightly pressed on the first oil hole 2 a.
As shown in fig. 1, the shutoff valve of the present invention has a simple structure, when the valve core is assembled, the medium fed into the first chamber 3c through the first oil hole 2a and the check valve assembly is needed, the medium entering the first chamber 3c enters the second chamber 3a through the second oil hole 3b, until the first chamber 3c, the second oil hole 3b and the second chamber 3a are filled with the medium, and the state of the valve core assembly after the injection is as shown in fig. 1.
When the stop valve is changed from an open state to a closed state, the screw rod 1 is rotated through the valve wheel 24, so that the screw rod 1 drives the valve block 3 to move downwards along the guide slide rod 10, at this time, the valve block 3 cannot rotate along with the screw rod 1 under the cooperation effect with the guide slide rod 10, when the valve block 3 drives the first valve disc 6a to move to the main valve port of the first communicating pipe 22 as shown in fig. 1, the screw rod 1 continues to rotate, at this time, the piston body 201 is pushed to continue to descend through the upper piston rod 2, at this time, the medium in the first chamber 3c is extruded into the second chamber 3a through the second oil hole 3b, and the second valve disc 6b is pushed by the first piston 4a1 and the first piston rod 4a to overcome the movement of the first spring 5 to the second communicating pipe 23 until the second valve disc is tightly attached to the valve; at this time, as shown in fig. 2, the screw 1 cannot rotate downward, and at this time, the rotation of the screw 1 is stopped and locked, and the closing of the shut-off valve is completed.
When the stop valve is changed from a closed state to an open state, the screw 1 is loosened, the valve wheel 24 is rotated to be lifted, the first piston 4a1 drives the second valve disc 6b to leave the valve port of the second communication pipe 23 through the first piston rod 4a under the action of the first spring 5, the medium in the second chamber 3a is extruded into the first chamber 3c through the second oil hole 3b, the upper piston rod 2 is pushed to move upwards through the piston body 201, when the second valve disc 6b abuts against the first plug 11, the piston body 201 moves upwards to be in contact with the upper plug 9 as shown in fig. 1, the screw 1 is continuously rotated through the valve wheel 24 to be lifted up the valve block 3 and the first valve disc 6a through the matching of the shoulder 101 and the stop ring 2c, the first valve disc 6a upwards opens the main valve port of the first communication pipe 22, and when the valve block 3 moves to the position shown in fig. 3, the opening of the stop valve is completed; in the opening and closing processes of the stop valve, the second valve disc 6b, the second communicating pipe 23, the first valve disc 6a and the first communicating pipe 22 do not generate friction, so that the service life of the stop valve can be prolonged, and the stop valve is not easy to damage; when minute leakage occurs in the first and second chambers 3c and 3a due to long-term use, the medium can be supplied into the first and second chambers 3c and 3a through the first oil hole 2a and the check valve assembly when the piston body 201 moves upward, so that the amount of the medium therein is not reduced and the second disk 6b is not failed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A stop valve is characterized by comprising a valve body, wherein the valve body is provided with a valve cavity with an upper end opening, and a valve cover is fixedly arranged at the upper end opening of the valve cavity of the valve body; the lower end of the valve body is provided with a first communicating pipe communicated with the valve cavity, and the side surface of the valve body is provided with a second communicating pipe communicated with the valve cavity; a first valve disc for controlling the on-off of the first communicating pipe is arranged at the upper end of the first communicating pipe in the valve cavity, a valve block is fixedly mounted on the first valve disc, and a valve core assembly for controlling the on-off of the second communicating pipe is arranged on the side face of the valve block; the valve cover is in threaded connection with a screw rod, the lower end of the screw rod is located in the valve cavity and connected with the valve block to control the valve block to move up and down, and the valve core assembly moves axially along the second communicating pipe.
2. The stop valve of claim 1, wherein a vertically downward guide rod is fixedly mounted in the valve cover, and the valve block is slidably connected to the guide rod.
3. The stop valve according to claim 2, wherein the valve core assembly comprises a first piston and a first plug, the valve block is provided with a mounting hole on the side surface facing the second communication pipe along the axial direction of the second communication pipe, and the first plug is fixedly mounted at the opening end of the mounting hole; the first piston is connected in the mounting hole in a sliding manner; a first piston rod penetrating through the first plug is arranged on the first piston in an axially extending mode along the mounting hole, a second valve disc used for controlling the on-off of a second communicating pipe is fixedly mounted at one end, located outside the mounting hole, of the first piston rod, and a first spring used for forcing the first piston to move in the direction away from the first plug is arranged between the first piston and the first plug in the mounting hole;
a piston hole with an upper end opening coaxial with the screw rod is arranged in the valve block, an upper plug is fixedly installed at the upper end opening of the piston hole, a piston body is connected in the piston hole in a sliding mode, an upper piston rod penetrating through the upper plug is arranged on the piston body in an axially extending mode along the piston hole, and the upper end of the upper piston rod is fixedly connected with the lower end of the screw rod in the axial direction and is connected with the lower end of the screw rod in a sliding mode along the circumferential direction; a first cavity is formed between the lower end of the piston body and the bottom of the piston hole in the piston hole, a first oil hole for communicating the valve cavity with the first cavity is formed in the piston body, and a one-way valve assembly for controlling liquid to flow into the first cavity is arranged in the first oil hole;
a second chamber is formed between the first piston and the bottom of the mounting hole in the mounting hole, and a second oil hole used for communicating the first chamber with the second chamber is formed in the bottom of the mounting hole in the valve block.
4. The stop valve of claim 3, wherein the upper end of the upper piston rod is provided with a mounting groove with an upper end opened, the screw rod is provided with a shoulder rotatably connected in the mounting groove on the circumferential side surface of the lower end, and the opening of the mounting groove is in threaded connection with a stop ring in sliding connection with the shoulder.
5. The shut-off valve of claim 3, wherein the first plug has a first through hole therein in communication with the mounting hole, and the upper plug has a second through hole therein in communication with the piston bore.
6. The stop valve according to claim 2, wherein the check valve assembly comprises a ball, a second spring and a hollow second plug, the lower end of the piston body is provided with a slot communicated with the first oil hole, the ball is positioned in the slot and used for controlling the on-off of the first oil hole, the second plug is fixedly arranged at the opening at the lower end of the slot, and the second spring is positioned between the second plug and the ball and used for forcing the ball to be pressed on the first oil hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065253.2A CN111271476A (en) | 2020-01-20 | 2020-01-20 | Stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010065253.2A CN111271476A (en) | 2020-01-20 | 2020-01-20 | Stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111271476A true CN111271476A (en) | 2020-06-12 |
Family
ID=70994964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010065253.2A Pending CN111271476A (en) | 2020-01-20 | 2020-01-20 | Stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111271476A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720557A (en) * | 2020-06-19 | 2020-09-29 | 宁波真格液压科技有限公司 | Novel stop valve |
| CN111795163A (en) * | 2020-07-09 | 2020-10-20 | 济南德创试验仪器有限公司 | Anti-blocking regulating valve |
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| CN106763817A (en) * | 2017-02-15 | 2017-05-31 | 福建省兴达阀门制造有限公司 | A kind of dark bar seal gate valve of rocker-type |
| CN208503524U (en) * | 2018-06-11 | 2019-02-15 | 国家电投集团贵州金元威宁能源发展有限公司象鼻岭水电站 | A kind of novel power station bypass valve |
| CN208546530U (en) * | 2018-04-09 | 2019-02-26 | 上海寅翔液压技术有限公司 | A kind of hydraulic switch two way seal hydraulic valve |
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2020
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|---|---|---|---|---|
| CN2929372Y (en) * | 2006-06-26 | 2007-08-01 | 贵州精高电力物资有限公司 | Double core double seat free-flushing stop valve |
| CN101988600A (en) * | 2010-08-03 | 2011-03-23 | 严桂新 | Bilge valve |
| CN202109038U (en) * | 2011-06-27 | 2012-01-11 | 精工阀门有限公司 | Novel slow shut check valve |
| CN203604679U (en) * | 2013-12-05 | 2014-05-21 | 中亚阀门有限公司 | Hydraulic plunger type parallel opening flat gate valve |
| CN104913080A (en) * | 2015-04-20 | 2015-09-16 | 广州市昊封流体工程技术有限公司 | Non-wear boosting ball valve |
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| CN204878837U (en) * | 2015-06-17 | 2015-12-16 | 广州市昊封流体工程技术有限公司 | Turbocharging system of pressure boost ball valve and do not have wearing and tearing pressure boost ball valve |
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| CN208546530U (en) * | 2018-04-09 | 2019-02-26 | 上海寅翔液压技术有限公司 | A kind of hydraulic switch two way seal hydraulic valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720557A (en) * | 2020-06-19 | 2020-09-29 | 宁波真格液压科技有限公司 | Novel stop valve |
| CN111720557B (en) * | 2020-06-19 | 2023-09-22 | 盐城市精工阀门有限公司 | Novel stop valve |
| CN111795163A (en) * | 2020-07-09 | 2020-10-20 | 济南德创试验仪器有限公司 | Anti-blocking regulating valve |
| CN111795163B (en) * | 2020-07-09 | 2022-06-24 | 君品集团有限公司 | Anti-blocking regulating valve |
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Application publication date: 20200612 |