CN114607791A - Eccentric ball valve capable of being sealed in two directions - Google Patents
Eccentric ball valve capable of being sealed in two directions Download PDFInfo
- Publication number
- CN114607791A CN114607791A CN202210307856.8A CN202210307856A CN114607791A CN 114607791 A CN114607791 A CN 114607791A CN 202210307856 A CN202210307856 A CN 202210307856A CN 114607791 A CN114607791 A CN 114607791A
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- valve
- rod
- ball valve
- gear
- opening
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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
- 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
- F16K5/06—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 spherical surfaces; Packings therefor
- F16K5/0605—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 spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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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
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating 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
- F16K35/00—Means to prevent accidental or unauthorised actuation
- F16K35/10—Means to prevent accidental or unauthorised actuation with locking caps or locking bars
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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
- F16K35/00—Means to prevent accidental or unauthorised actuation
- F16K35/16—Means to prevent accidental or unauthorised actuation with locking member actuated by magnet
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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
- 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
- F16K5/06—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 spherical surfaces; Packings therefor
- F16K5/0647—Spindles or 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
- 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
- F16K5/06—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 spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
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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
- 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
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention provides a two-way sealing eccentric ball valve which can reduce the abrasion of a sealing surface and improve the sealing property and the service life of the ball valve, and comprises a ball valve body, a valve cover, a water inlet channel, a water outlet channel, a valve clack and a valve rod, wherein a first channel is arranged above the valve rod, the lower end part of the valve rod is connected with the valve clack, the upper end part of the valve rod penetrates out of the first channel, the ball valve body is positioned in the water inlet channel and is abutted against the valve clack after sliding for a certain distance, a valve seat for sealing is connected on the valve seat, a connecting block is arranged on the connecting block, a connecting groove is arranged on the connecting block, a first opening-closing rod and a second opening-closing rod are symmetrically hinged in the connecting groove, and pushing devices for pushing the opening-closing rods are arranged on the first opening-closing rod and the second opening-closing rod.
Description
Technical Field
The invention relates to the technical field of valves, in particular to an eccentric ball valve capable of being sealed in a two-way mode.
Background
With the development of the pipeline industry, valves are commonly used opening and closing connecting pieces in pipelines. Eccentric ball valves are commonly used connections in pipelines. The eccentric ball valve has small volume, has the functions of cutting off and regulating, and is widely used in strict cutting off and flow regulation. However, after the eccentric ball valve is used for a long time, the valve clack and the sealing pair are easy to wear, so that the sealing surface is damaged, the sealing effect is poor, and the use of the ball valve is influenced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a bidirectional sealing eccentric ball valve which can reduce the abrasion of a sealing surface, improve the sealing property of the ball valve and prolong the service life of the ball valve.
In order to achieve the above purpose, the technical scheme of the invention is to provide a two-way sealable eccentric ball valve, which comprises a ball valve body, a valve cover arranged above the ball valve body, a water inlet channel and a water outlet channel which are arranged along the radial direction of the ball valve body, and a valve clack arranged between the water inlet channel and the water outlet channel and used for controlling the opening and closing of fluid, wherein a valve rod is arranged above the valve clack and positioned in the ball valve body, a first channel is arranged above the valve rod, the lower end part of the valve rod is connected with the valve clack, the upper end part of the valve rod penetrates out of the first channel, a valve seat which is positioned in the water inlet channel and is pressed against the valve clack by sliding for a certain distance and then sealed is arranged above the valve seat, a connecting block is connected on the valve seat, a connecting groove is arranged on the connecting block, and a first opening and closing rod and a second opening and closing rod are symmetrically hinged in the connecting groove, and the first opening and closing rod and the second opening and closing rod are provided with pushing devices for pushing the opening and closing rods to open and close.
The further improvement is that: the pushing device comprises a first screw rod, one end of the first screw rod is rotatably arranged on the ball valve body and is located in the water inlet channel, the other end of the first screw rod is provided with a fixed block, the other end face of the fixed block is provided with a second screw rod opposite to the thread of the first screw rod, the first opening and closing rod and the second opening and closing rod are respectively hinged with a first shaft and a second shaft, the first screw rod and the second screw rod are respectively threaded to penetrate through the first shaft and the second shaft in a transmission manner, and the second screw rod penetrates out of the ball valve body and is provided with a first linkage device which is used for driving the second screw rod to rotate when the valve rod opens the ball valve and then pushes the valve seat to remove the first linkage device sealed with the valve clack.
The further improvement is that: the first linkage device comprises a first gear, the first gear is sleeved on the second screw, the valve cover is slidably provided with a gear row in a penetrating mode, one end of the gear row is located outside the valve cover and is in meshed transmission with the first gear, the other end of the gear row is arranged in the valve cover in a penetrating mode, and the valve rod is sleeved with a second gear in meshed transmission with the gear row.
The further improvement is that: the valve rod includes valve rod body and dwang, the dwang is rotatable to be worn to locate on the valve cap and one end wears out the valve cap, but second gear slidable cover is located on dwang and valve rod body, be provided with the second interlock that makes simultaneous interlock between the three between dwang, valve rod body and the second gear.
The further improvement is that: the second linkage device is as follows: the ball valve is characterized in that a key strip is fixedly arranged inside the second gear, the rotating rod and the valve rod body are matched with the key strip, a first key groove and a second key groove are formed in the rotating rod and the valve rod body, and an anti-opening and closing device for preventing the rotating rod from being rotated and then opening the ball valve is arranged on the rotating rod, the valve rod and the second gear.
The further improvement is that: prevent that open and close device drives dwang pivoted opening and closing rod including can block into the dwang, it is equipped with the seal box to lie in second screw rod position on the ball valve body, magnetism has on the opening and closing rod, the second gear has the magnetism opposite with opening and closing rod magnetism, be equipped with the return piece between second gear and the valve rod.
The further improvement is that: the return piece is as follows: the spring is sleeved on the valve rod body, a supporting plate is arranged in the valve cover, and the spring is arranged between the supporting plate and the second gear.
The further improvement is that: the ball valve body is provided with a cleaning hole at the position of the valve seat, and a sealing plug used for blocking the cleaning hole is arranged at the position of the cleaning hole.
The further improvement is that: the sealing plug is as follows: the sealing plug is made of transparent materials, so that the valve seat and the valve clack can be observed.
The further improvement is that: the valve seat is provided with an elastic layer at the contact surface with the valve clack.
The invention has the advantages and beneficial effects that:
simple structure and convenient use. The eccentric ball valve not only has the encryption nature, prevents that other people from opening, in addition when opening, can drive disk seat and valve clack separation, avoids disk seat and valve clack wearing and tearing each other to improve its sealed vice life, reduce the maintenance and the change of valve.
Drawings
Fig. 1 is a partially cut-away schematic structural view of an eccentric ball valve capable of bidirectional sealing according to an embodiment of the invention.
Fig. 2 is a schematic sectional view of a valve rod body, a second gear and a rotating rod according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1-2, a two-way sealable eccentric ball valve includes a ball valve body 1, a first screw 14, a valve cover 6 disposed above the ball valve body 1, a water inlet channel 2 and a water outlet channel 3 radially disposed along the ball valve body 1, and a valve flap 4 disposed between the water inlet channel 2 and the water outlet channel 3 for controlling opening and closing of fluid, a valve rod 5 disposed inside the ball valve body 1 above the valve flap 4, a first channel disposed above the valve rod 5, a lower end of the valve rod 5 connected to the valve flap 4, an upper end of the valve rod 5 penetrating through the first channel, a valve seat 7 disposed inside the water inlet channel 2 and abutting against the valve flap 4 for sealing, the valve seat 7 being connected with a connecting block 9, the connecting block 9 being provided with a connecting groove, the connecting block 9 being disposed inside the connecting groove and symmetrically hinged with a first opening and closing rod 10 and a second opening and closing rod 12, one end of the first screw 14 is rotatably arranged on the ball valve body 1 and is positioned in the water inlet channel 2, the other end of the first screw 14 is provided with a fixed block 13, the other end face of the fixed block 13 is provided with a second screw 14 with opposite thread to the first screw 14, the first opening and closing rod 10 and the second opening and closing rod 12 are respectively hinged with a first shaft 15 and a second shaft 11, the first screw 14 and the second screw 14 are respectively penetrated on the first shaft 15 and the second shaft 11 in thread transmission, the second screw 14 penetrates out of the ball valve body 1, the second screw 14 is provided with a first gear 17 for driving the second screw 14 to rotate when the valve rod 5 opens the ball valve and further pushing the valve seat 7 to remove the seal with the valve clack 4, the first gear 17 is sleeved on the second screw 14, the valve cover 6 is slidably penetrated with a tooth row 18, and one end of the tooth row 18 is positioned outside the valve cover 6 and is in mesh transmission with the first gear 17, the other end of the gear row 18 penetrates through the valve cover 6, and a second gear 20 in meshing transmission with the gear row 18 is sleeved on the valve rod 5.
In order to prevent other people from opening and closing the eccentric ball valve, the valve rod 5 comprises a valve rod body 5 and a rotating rod 23, the rotating rod 23 can be rotated to penetrate through the valve cover 6 and one end of the rotating rod 23 penetrates out of the valve cover 6, the second gear 20 can be slidably sleeved on the rotating rod 23 and the valve rod body 5, a key strip is fixedly arranged inside the second gear 20, the rotating rod 23 and the valve rod body 5 are matched with the key strip to be provided with a first key groove 24 and a second key groove 25, an anti-opening and closing device for preventing the ball valve from being opened after the rotating rod 23 is rotated is arranged on the rotating rod 23, the anti-opening and closing device comprises an opening and closing rod (not shown in the figure) which can be clamped into the rotating rod 23 to drive the rotating rod 23 to rotate, a sealing box 19 is arranged at the position of the second screw 14 on the ball valve body 1, magnetism is arranged on the opening and closing rod, the second gear 20 has magnetism opposite to that of the opening and closing rod, a spring 21 is arranged between the second gear 20 and the valve rod 5, the spring 21 is sleeved on the valve rod body 5, a support plate is arranged in the valve cover 6, and the spring 21 is arranged between the support plate and the second gear 20.
In order to remove the impurities attached to the valve seat 7 and the valve flap 4, a cleaning hole is formed in the position, located on the valve seat 7, of the ball valve body 1, and a sealing plug 26 used for blocking the cleaning hole is arranged in the cleaning hole.
In order to facilitate the observation of the valve seat 7 and the valve flap 4, the sealing plug 26 is made of transparent material so that the valve seat 7 and the valve flap 4 can be observed.
In order to reduce the friction of the contact surface, the valve seat 7 is provided with an elastic rubber layer at the contact surface with the valve clack 4.
The working principle is as follows:
when the eccentric ball valve is to be opened, the opening and closing rod is sleeved into the rotating rod 23, the opening and closing rod pushes the second gear 20 to slide downwards to be meshed with the gear row 18, meanwhile, the key strip in the second gear 20 is positioned between the first key groove 24 and the second key groove 25, at the moment, the spring 21 is compressed, then the rotating rod 23 is rotated, the rotating rod 23 drives the second gear 20 to rotate the second gear 20 to drive the valve rod 5 to rotate the valve rod 5 to drive the valve clack 4 to rotate to open the eccentric ball valve, at the moment, the second gear 20 rotates to drive the gear row 18 to slide, the gear row 18 slides to drive the first gear 17 to rotate, the first gear 17 rotates to drive the second screw 14 and the first screw 14 to rotate, the second screw 14 and the first screw 14 are in threaded transmission with the first shaft 15 and the second shaft 11 respectively, the first opening and closing rod 10 and the second opening and closing rod 12 are opened in opposite directions, and further the valve seat 7 is pulled to slide towards the outlet of the water inlet channel 2 to be separated from the valve clack 4, thereby avoiding the valve clack 4 from rubbing against the valve seat 7 to abrade the sealing surface when rotating. When the eccentric ball valve is to be closed, the opening and closing rod is turned over, the opening and closing rod drives the valve rod 5 to rotate to close the valve clack 4, at the moment, the second gear 20 rotates reversely to drive the first gear 17 to rotate reversely, so that the first screw 14 and the second screw 14 are driven to rotate reversely, the first screw 14 and the second screw 14 are in threaded transmission with the first shaft 15 and the second shaft 11 respectively, the first opening and closing rod 10 and the second opening and closing rod 12 are closed oppositely, the valve seat 7 is pushed to move towards the direction of the valve clack 4, and the valve seat 7 and the valve clack 4 are tightly pressed and sealed. Then the opening and closing rod is taken away, the spring 21 resets, the second gear 20 is bounced to the rotating rod 23, the meshing with the tooth row 18 is removed, the ball valve is prevented from being opened by other people, and the management of workers is facilitated.
While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are included to illustrate the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (10)
1. The utility model provides a but two way seal's eccentric ball valve, include the ball valve body, set up in the valve gap of ball valve body top, along radial inhalant canal and the exhalant canal of seting up of ball valve body, set up in inhalant canal with be used for the valve clack that control fluid opened and close between the exhalant canal, the valve clack top is located the inside valve rod that is equipped with of ball valve body, first passageway has been seted up to the valve rod top, the lower tip of valve rod with the valve clack is connected, the valve rod upper end is worn out first passageway, its characterized in that: the ball valve body is located and carries out sealed disk seat after sliding one section distance back and valve clack counterbalance system in the inhalant canal, be connected with the connecting block on the disk seat, the spread groove has been seted up on the connecting block, the connecting block is located that the symmetry articulates in the spread groove has first pole and the second pole that opens and shuts, be equipped with the thrust unit who is used for promoting the pole that opens and shuts to open and shut on first pole and the second pole that opens and shuts.
2. A bi-directionally sealable eccentric ball valve according to claim 1, wherein: the pushing device comprises a first screw rod, one end of the first screw rod is rotatably arranged on the ball valve body and is located in the water inlet channel, the other end of the first screw rod is provided with a fixed block, the other end face of the fixed block is provided with a second screw rod opposite to the thread of the first screw rod, the first opening and closing rod and the second opening and closing rod are respectively hinged with a first shaft and a second shaft, the first screw rod and the second screw rod are respectively threaded to penetrate through the first shaft and the second shaft in a transmission manner, and the second screw rod penetrates out of the ball valve body and is provided with a first linkage device which is used for driving the second screw rod to rotate when the valve rod opens the ball valve and then pushes the valve seat to remove the first linkage device sealed with the valve clack.
3. A bi-directionally sealable eccentric ball valve according to claim 2, wherein: the first linkage device comprises a first gear, the first gear is sleeved on the second screw, the valve cover is slidably provided with a gear row in a penetrating mode, one end of the gear row is located outside the valve cover and is in meshed transmission with the first gear, the other end of the gear row is arranged in the valve cover in a penetrating mode, and the valve rod is sleeved with a second gear in meshed transmission with the gear row.
4. A bi-directionally sealable eccentric ball valve according to claim 3, wherein: the valve rod includes valve rod body and dwang, the dwang is rotatable to be worn to locate on the valve cap and one end wears out the valve cap, but second gear slidable cover is located on dwang and valve rod body, be provided with the second interlock that makes simultaneous interlock between the three between dwang, valve rod body and the second gear.
5. The bi-directionally sealable eccentric ball valve of claim 4, wherein: the second linkage device is as follows: the ball valve is characterized in that a key strip is fixedly arranged inside the second gear, the rotating rod and the valve rod body are matched with the key strip, a first key groove and a second key groove are formed in the rotating rod and the valve rod body, and an anti-opening and closing device for preventing the rotating rod from being rotated and then opening the ball valve is arranged on the rotating rod, the valve rod and the second gear.
6. A bi-directionally sealable eccentric ball valve according to claim 5, wherein: prevent that open and close device drives dwang pivoted opening and closing rod including can block into the dwang, it is equipped with the seal box to lie in second screw rod position on the ball valve body, magnetism has on the opening and closing rod, the second gear has the magnetism opposite with opening and closing rod magnetism, be equipped with the return piece between second gear and the valve rod.
7. A bi-directionally sealable eccentric ball valve according to claim 6, wherein: the return piece is as follows: the spring is sleeved on the valve rod body, a supporting plate is arranged in the valve cover, and the spring is arranged between the supporting plate and the second gear.
8. A bi-directionally sealable eccentric ball valve according to claim 7, wherein: the ball valve body is provided with a cleaning hole at the position of the valve seat, and a sealing plug used for blocking the cleaning hole is arranged at the position of the cleaning hole.
9. A bi-directionally sealable eccentric ball valve according to claim 8, wherein: the sealing plug is as follows: the sealing plug is made of transparent materials, so that the valve seat and the valve clack can be observed.
10. A bi-directionally sealable eccentric ball valve according to claim 1, wherein: the valve seat is provided with an elastic layer at the contact surface with the valve clack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210307856.8A CN114607791A (en) | 2022-03-25 | 2022-03-25 | Eccentric ball valve capable of being sealed in two directions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210307856.8A CN114607791A (en) | 2022-03-25 | 2022-03-25 | Eccentric ball valve capable of being sealed in two directions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114607791A true CN114607791A (en) | 2022-06-10 |
Family
ID=81867552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210307856.8A Pending CN114607791A (en) | 2022-03-25 | 2022-03-25 | Eccentric ball valve capable of being sealed in two directions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114607791A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117189941A (en) * | 2023-11-07 | 2023-12-08 | 福建志邦阀门有限公司 | Durable valve for preventing water hammer from being opened and closed |
-
2022
- 2022-03-25 CN CN202210307856.8A patent/CN114607791A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117189941A (en) * | 2023-11-07 | 2023-12-08 | 福建志邦阀门有限公司 | Durable valve for preventing water hammer from being opened and closed |
| CN117189941B (en) * | 2023-11-07 | 2024-02-23 | 福建志邦阀门有限公司 | Durable valve for preventing water hammer from being opened and closed |
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