CN113124171B - Scour prevention stop valve - Google Patents
Scour prevention stop valve Download PDFInfo
- Publication number
- CN113124171B CN113124171B CN202110392440.6A CN202110392440A CN113124171B CN 113124171 B CN113124171 B CN 113124171B CN 202110392440 A CN202110392440 A CN 202110392440A CN 113124171 B CN113124171 B CN 113124171B
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- valve
- guide
- guide groove
- guide arm
- working position
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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
- F16K1/36—Valve members
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to an anti-scouring stop valve, comprising: the valve body is provided with an inlet flow passage and an outlet flow passage, and the inlet flow passage is communicated with the outlet flow passage through a communication port; a valve cover; a valve stem; the connecting seat is rotatably connected to the lower end of the valve rod; the valve clack is rotationally connected to the connecting seat through a hinge shaft, is controlled by the valve rod and has a first working position and a second working position; and the deflection control mechanism can drive the valve clack to rotate n degrees in the process of moving the valve clack from the first working position to the second working position, and n is more than or equal to 30 degrees and less than or equal to 90 degrees. The invention has the advantages that: when the valve clack is opened, when moving to second operating position by first operating position promptly, take place certain rotation to avoid the intercommunication mouth, prevent that the valve clack from being continuously washed away by the higher fluid of the velocity of flow through the intercommunication mouth, improved the life of valve clack.
Description
Technical Field
The invention relates to the technical field of pipeline valves, in particular to an anti-scouring stop valve.
Background
The stop valve is a valve with a valve clack moving along the central line of a valve seat, mainly plays a role in cutting off a pipeline, and is widely applied to the fields of petroleum, petrifaction, chemical industry, metallurgy, electric power, fire fighting, machinery and the like. The valve with any structure can realize the control of fluid medium by the perfect matching of the working surface. However, in a high-temperature and high-pressure environment, the sealing surface of the valve is continuously impacted by high-speed fluid, and pitting corrosion is generated on the surface of the sealing surface due to fatigue damage, so that the sealing surface is damaged to cause valve leakage, and the service life of the valve is greatly shortened.
The stop valve is invented for solving the problems.
Disclosure of Invention
In view of this, it is desirable to provide an anti-scour shut-off valve that addresses the above-mentioned problems.
The invention discloses an anti-scouring stop valve, which comprises: the valve body is provided with an inlet flow passage and an outlet flow passage, and the inlet flow passage is communicated with the outlet flow passage through a communication port; the valve cover is arranged at the upper end of the valve body in a covering manner; the valve rod penetrates through the valve cover and can move along the vertical direction; the connecting seat is rotatably connected to the lower end of the valve rod; the valve clack is rotationally connected to the connecting seat through a hinge shaft, is controlled by the valve rod and is provided with a first working position and a second working position, when the valve clack is positioned at the first working position, the valve clack seals the communication opening, and when the valve clack is positioned at the second working position, the valve clack is separated from the communication opening, so that the inlet flow passage is communicated with the outlet flow passage; and the deflection control mechanism can drive the valve clack to rotate by n degrees in the process of moving the valve clack from the first working position to the second working position, wherein n is more than or equal to 30 and less than or equal to 90.
In one embodiment, the valve body has a first guide slot, a second guide slot, and a third guide slot formed on a left side wall thereof, the first guide slot and the third guide slot are vertically formed, the second guide slot is obliquely formed and communicates with the first guide slot and the third guide slot, the deflection control mechanism includes a first guide arm, a second guide arm, a dial block, and an elastic member, the first guide arm is disposed on the hinge shaft and extends into the first guide slot, the second guide arm is disposed on the valve flap and extends into the first guide slot, the dial block is slidably disposed on the valve body, one end of the elastic member abuts against the valve body, the other end of the elastic member abuts against the dial block, the dial block has a first inclined surface and a second inclined surface, when the valve flap is lifted from a first working position until the second guide arm abuts against the second inclined surface on the dial block, the valve clack can enter a third guide groove along the second guide groove under the action of the second inclined surface, so that the valve clack rotates.
In one embodiment, the end of the first guide arm is provided with a guide part, and the length of the guide part is larger than the width of the joint of the second guide groove and the first guide groove, so that the first guide arm cannot enter the second guide groove.
In one embodiment, a fourth guide groove is formed in the right side wall of the valve body in the vertical direction, a third guide arm is arranged on the hinge shaft, and the third guide arm extends into the fourth guide groove.
In one embodiment, when the first guide arm abuts against the second inclined surface on the dial block, the dial block can be pressed, the dial block is moved, the elastic piece is further pressed, and therefore the first guide arm can continuously move upwards along the first guide groove.
In one embodiment, the first guide arm is located on the underside of the second guide arm when the valve flap is in the first operating position.
In one embodiment, the second inclined surface is coplanar with a side wall of the second guide groove, thereby enabling the second guide arm to enter the second guide groove along the second inclined surface.
In one embodiment, the first guide arm is integrally provided with the hinge shaft, the second guide arm is integrally provided with the valve flap, and the third guide arm is integrally provided with the hinge shaft.
In one embodiment, a nut member is rotatably disposed on the valve cover, the nut member is in threaded connection with the valve rod, and the valve rod can be driven to move in the vertical direction by rotating the nut member.
In one embodiment, a handle is fixedly arranged on the nut member.
The invention has the advantages that:
1. when the valve clack is opened, namely when the valve clack moves from the first working position to the second working position, the valve clack rotates to a certain degree so as to avoid the communication opening, so that the valve clack is prevented from being continuously washed by fluid with higher flow velocity passing through the communication opening, and the service life of the valve clack is prolonged;
2. the valve clack can be controlled to be opened and closed by rotating the handle, and the valve clack can be automatically turned in the opening and closing process, so that the operation mode is simple, the structure is exquisite, and the manufacturing cost is low.
Drawings
FIG. 1 is a cross-sectional view of the present invention with the valve flap in the closed position;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 4 is a cross-sectional view of the valve flap of the present invention in an open position;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;
fig. 6 is a sectional view taken in the direction B-B in fig. 5.
In the figure, the valve body 1, the inlet flow passage 11, the outlet flow passage 12, the first guide groove 13, the second guide groove 14, the third guide groove 15, the fourth guide groove 16, the communication port 17, the bonnet 2, the valve rod 3, the connecting seat 4, the valve flap 5, the hinge shaft 6, the first guide arm 71, the guide part 711, the second guide arm 72, the toggle block 73, the first inclined surface 731, the second inclined surface 732, the elastic member 74, the third guide arm 75, the nut member 8, and the handle 9.
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.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 3, the invention discloses an anti-scouring stop valve, which comprises: the valve comprises a valve body 1, a valve cover 2, a valve rod 3, a connecting seat 4, a valve clack 5 and a deflection control mechanism.
The valve body 1 is provided with an inlet flow passage 11 and an outlet flow passage 12, and the inlet flow passage 11 is communicated with the outlet flow passage 12 through a communication port 17; the valve cover 2 is arranged at the upper end of the valve body 1 in a covering manner; the valve rod 3 penetrates through the valve cover 2 and can move along the vertical direction; the connecting seat 4 is rotatably connected to the lower end of the valve rod 3; the valve flap 5 is rotationally connected to the connecting seat 4 through a hinge shaft 6, is controlled by the valve rod 3 and has a first working position and a second working position, when the valve flap 5 is located at the first working position, the valve flap 5 seals the communication port 17, and when the valve flap 5 is located at the second working position, the valve flap 5 is separated from the communication port 17, so that the inlet flow passage 11 is communicated with the outlet flow passage 12; the deflection control mechanism can drive the valve clack 5 to rotate n degrees in the process that the valve clack 5 moves from the first working position to the second working position, and n is more than or equal to 30 and less than or equal to 90.
In this embodiment, the distance between the first guide arm 71 and the second guide arm 72 is equal to the distance between the first guide groove 13 and the third guide groove 15, so that the valve flap 5 is rotated by 90 degrees when the first guide arm 71 is located in the first guide groove 13 and the second guide arm 72 is located in the third guide groove 15.
Preferably, a first guide groove 13, a second guide groove 14 and a third guide groove 15 are formed in the left side wall of the valve body 1, the first guide groove 13 and the third guide groove 15 are both formed in the vertical direction, the second guide groove 14 is obliquely arranged and communicated with the first guide groove 13 and the third guide groove 15, the deflection control mechanism includes a first guide arm 71, a second guide arm 72, a toggle block 73 and an elastic member 74, the first guide arm 71 is arranged on the hinge shaft 6 and extends into the first guide groove 13, the second guide arm 72 is arranged on the valve flap 5 and extends into the first guide groove 13, the toggle block 73 is slidably arranged on the valve body 1, one end of the elastic member 74 abuts against the valve body 1, the other end of the elastic member abuts against the toggle block 73, the toggle block 73 is provided with a first inclined surface 731 and a second inclined surface 732, when the valve flap 5 is raised from the first operating position until the second guide arm 72 abuts against the second inclined surface 732 of the toggle block 73, the valve flap 5 can be rotated by the second inclined surface 732 along the second guide groove 14 and into the third guide groove 15.
Preferably, the end of the first guide arm 71 has a guide portion 711, and the length of the guide portion 711 is greater than the width of the connection between the second guide groove 14 and the first guide groove 13, so that the first guide arm 71 does not enter the second guide groove 14.
Preferably, a fourth guide groove 16 is formed in the right side wall of the valve body 1 in the vertical direction, a third guide arm 75 is arranged on the hinge shaft 6, and the third guide arm 75 extends into the fourth guide groove 16.
Preferably, when the first guide arm 71 abuts against the second inclined surface 732 on the dial block 73, the dial block 73 is pressed, the dial block 73 is moved, and the elastic member 74 is further pressed, so that the first guide arm 71 can continue to move upward along the first guide groove 13.
Preferably, when the flap 5 is in the first operating position, the first guide arm 71 is located on the lower side of the second guide arm 72.
Preferably, the second inclined surface 732 is coplanar with the sidewall of the second guide groove 14, so that the second guide arm 72 can enter the second guide groove 14 along the second inclined surface 732.
Preferably, the first guide arm 71 is integrally provided with the hinge shaft 6, the second guide arm 72 is integrally provided with the valve flap 5, and the third guide arm 75 is integrally provided with the hinge shaft 6.
Preferably, the valve cover 2 is rotatably provided with a nut member 8, the nut member 8 is in threaded connection with the valve rod 3, and the nut member 8 can drive the valve rod 3 to move along the vertical direction through rotation.
Preferably, a handle 9 is fixedly arranged on the nut member 8.
The working mode of the invention is as follows: as shown in fig. 1, 2 and 3, when the valve flap 5 is in the first operating position, the valve flap 5 closes the communication port 17, and when the stop valve needs to be opened, the handle 9 is rotated in the forward direction to rotate the nut member 8 in the forward direction, so that the valve rod 3 is moved upward.
As shown in fig. 4, 5 and 6, the valve flap 5 is in the second working position, and during the ascending movement of the valve flap 5 from the first working position to the second working position, the second guide arm 72 preferentially contacts the second inclined surface 732 of the toggle block 73, so that the second guide arm 72 enters the second guide groove 14, and enters the third guide groove 15 along the second guide groove 14, thereby rotating the valve flap 5, and when the first guide arm 71 contacts the toggle block 73, since the first guide arm 71, the hinge shaft 6 and the third guide arm 75 are integrally provided, the first guide arm 71 cannot deflect, so as to press the toggle block 73, so that the toggle block 73 moves toward the elastic member 74, thereby enabling the first guide arm 71 to move upward along the first guide groove 13 to effect rotation of the valve flap 5 to bias the sealing surface of the valve flap 5 away from the communication port 17 to avoid being flushed by turbulent fluid.
When the valve clack 5 needs to be closed, the handle 9 is rotated reversely to drive the nut member 8 to rotate reversely, so that the valve rod 3 descends, the first guide arm 71 descends along the first guide groove 13 to abut against the first inclined surface 731 to extrude the toggle block 73, the second guide arm 72 descends along the third guide groove 15 to enter the second guide groove 14 and enter the first guide groove 13 along the second guide groove 14, so that the valve clack 5 rotates reversely to just face the communication port 17, the valve rod 3 descends continuously, and the valve clack 5 closes the communication port 17.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (7)
1. An anti-erosion stop valve, its characterized in that, anti-erosion stop valve include:
the valve body is provided with an inlet flow passage and an outlet flow passage, and the inlet flow passage is communicated with the outlet flow passage through a communication port;
the valve cover is arranged at the upper end of the valve body in a covering manner;
the valve rod penetrates through the valve cover and can move along the vertical direction;
the connecting seat is rotatably connected to the lower end of the valve rod;
the valve clack is rotationally connected to the connecting seat through a hinge shaft, is controlled by the valve rod and is provided with a first working position and a second working position, when the valve clack is positioned at the first working position, the valve clack seals the communication opening, and when the valve clack is positioned at the second working position, the valve clack is separated from the communication opening, so that the inlet flow passage is communicated with the outlet flow passage;
the deflection control mechanism can drive the valve clack to rotate by n degrees in the process that the valve clack moves from the first working position to the second working position, and n is more than or equal to 30 and less than or equal to 90;
the left side wall in the valve body is provided with a first guide groove, a second guide groove and a third guide groove, the first guide groove and the third guide groove are both arranged along the vertical direction, the second guide groove is obliquely arranged and communicated with the first guide groove and the third guide groove, the deflection control mechanism comprises a first guide arm, a second guide arm, a shifting block and an elastic piece, the first guide arm is arranged on the articulated shaft and extends into the first guide groove, the second guide arm is arranged on the valve clack and extends into the first guide groove, the shifting block is arranged on the valve body in a sliding manner, one end of the elastic piece is abutted against the valve body, the other end of the elastic piece is abutted against the shifting block, the shifting block is provided with a first inclined surface and a second inclined surface, when the valve clack rises from a first working position until the second guide arm is abutted against the second inclined surface on the shifting block, the valve clack can enter a third guide groove along the second guide groove under the action of the second inclined surface, so that the valve clack rotates;
the end part of the first guide arm is provided with a guide part, and the length of the guide part is greater than the width of the joint of the second guide groove and the first guide groove, so that the first guide arm cannot enter the second guide groove; a fourth guide groove is formed in the right side wall in the valve body in the vertical direction, a third guide arm is arranged on the hinged shaft, and the third guide arm extends into the fourth guide groove.
2. The anti-scour shut-off valve of claim 1 wherein when the first guide arm abuts against the second ramp surface on the dial block, the dial block can be squeezed, causing the dial block to move and further squeeze the resilient member, thereby allowing the first guide arm to continue moving up the first guide slot.
3. An anti-scour shut-off valve according to claim 2, wherein the first guide arm is located on the underside of the second guide arm when the valve flap is in the first operating position.
4. An anti-scour shut-off valve according to claim 3, wherein the second ramp is coplanar with the side wall of the second guide channel to enable the second guide arm to ride along the second ramp into the second guide channel.
5. An anti-scour shut-off valve according to claim 4, wherein the first guide arm is integrally formed with the hinge shaft, the second guide arm is integrally formed with the valve flap, and the third guide arm is integrally formed with the hinge shaft.
6. An anti-scour stop valve according to claim 1, wherein the valve cover is rotatably provided with a nut member, the nut member is in threaded connection with the valve rod, and the valve rod can be driven to move in the vertical direction by rotating the nut member.
7. An anti-scour shut-off valve as claimed in claim 6, wherein a handle is fixedly provided on the nut member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110392440.6A CN113124171B (en) | 2021-04-13 | 2021-04-13 | Scour prevention stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110392440.6A CN113124171B (en) | 2021-04-13 | 2021-04-13 | Scour prevention stop valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113124171A CN113124171A (en) | 2021-07-16 |
| CN113124171B true CN113124171B (en) | 2022-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110392440.6A Active CN113124171B (en) | 2021-04-13 | 2021-04-13 | Scour prevention stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113124171B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883294B (en) * | 2021-11-02 | 2023-11-10 | 希佛隆阀门集团有限公司 | Gate valve |
| CN114294041B (en) * | 2022-01-25 | 2023-12-05 | 德州启源空调设备有限公司 | Long-distance mountain tunnel ventilation device and application method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08189570A (en) * | 1995-01-11 | 1996-07-23 | Hikari Gokin Seisakusho:Kk | Counterflow preventive type drain cock having valve seat |
| JPH09242886A (en) * | 1996-03-06 | 1997-09-16 | Kameya:Kk | Preventing device for leakage of water stop valve |
| CN207814561U (en) * | 2017-12-29 | 2018-09-04 | 浙江天特阀门有限公司 | Once-through type turns round flap screw down nonreturn valve |
| CN108953636A (en) * | 2018-08-01 | 2018-12-07 | 南通市电站阀门有限公司 | A kind of disc type shut-off valve capable of reversing |
| CN208900728U (en) * | 2018-09-28 | 2019-05-24 | 远大阀门集团有限公司 | A kind of Hyperbolic pipe power valve |
| CN110805704A (en) * | 2019-10-21 | 2020-02-18 | 保一集团有限公司 | Stop valve capable of enhancing sealing performance between valve core and valve seat |
| CN111706679A (en) * | 2020-06-24 | 2020-09-25 | 韩国昊 | Self-cleaning stop valve |
| CN112303252A (en) * | 2020-10-27 | 2021-02-02 | 济南德创试验仪器有限公司 | Stop valve |
-
2021
- 2021-04-13 CN CN202110392440.6A patent/CN113124171B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08189570A (en) * | 1995-01-11 | 1996-07-23 | Hikari Gokin Seisakusho:Kk | Counterflow preventive type drain cock having valve seat |
| JPH09242886A (en) * | 1996-03-06 | 1997-09-16 | Kameya:Kk | Preventing device for leakage of water stop valve |
| CN207814561U (en) * | 2017-12-29 | 2018-09-04 | 浙江天特阀门有限公司 | Once-through type turns round flap screw down nonreturn valve |
| CN108953636A (en) * | 2018-08-01 | 2018-12-07 | 南通市电站阀门有限公司 | A kind of disc type shut-off valve capable of reversing |
| CN208900728U (en) * | 2018-09-28 | 2019-05-24 | 远大阀门集团有限公司 | A kind of Hyperbolic pipe power valve |
| CN110805704A (en) * | 2019-10-21 | 2020-02-18 | 保一集团有限公司 | Stop valve capable of enhancing sealing performance between valve core and valve seat |
| CN111706679A (en) * | 2020-06-24 | 2020-09-25 | 韩国昊 | Self-cleaning stop valve |
| CN112303252A (en) * | 2020-10-27 | 2021-02-02 | 济南德创试验仪器有限公司 | Stop valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113124171A (en) | 2021-07-16 |
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Denomination of invention: An anti erosion stop valve Effective date of registration: 20230615 Granted publication date: 20220621 Pledgee: China Co. truction Bank Corp Yongjia branch Pledgor: JUNPIN GROUP CO.,LTD. Registration number: Y2023330001213 |