CN117432825B - Soft sealing gate valve - Google Patents
Soft sealing gate valve Download PDFInfo
- Publication number
- CN117432825B CN117432825B CN202311748252.8A CN202311748252A CN117432825B CN 117432825 B CN117432825 B CN 117432825B CN 202311748252 A CN202311748252 A CN 202311748252A CN 117432825 B CN117432825 B CN 117432825B
- Authority
- CN
- China
- Prior art keywords
- valve
- liquid inlet
- liquid
- plate
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 96
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 28
- 238000001802 infusion Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/12—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces
-
- 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
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
- F16K27/047—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with wedge-shaped obturating members
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
-
- 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
-
- 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
-
- 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
Abstract
The invention provides a soft sealing gate valve, which comprises a valve body, a valve cover arranged on the valve body, a water inlet channel, a water outlet channel and a valve seat, wherein the water inlet channel and the water outlet channel are radially formed in the valve body, the valve seat is arranged between the water inlet channel and the water outlet channel, a valve plate for sealing the valve seat is arranged at the position of the valve seat, a valve rod for opening and closing the valve plate is arranged on the valve body, a V-shaped sliding groove is formed in the valve body, a propping plate is arranged on the inner wall of the sliding groove, a pushing block is arranged in the sliding groove in a sliding manner, the pushing block is arranged between the propping plates and propped against the pushing plate, hydraulic liquid is arranged in a cavity of the pushing block in the sliding groove, and a hydraulic pushing device for pressurizing the hydraulic liquid to push the pushing block to slide downwards and the propping plate to resist the pushing plate so as to deform the valve plate is arranged on the valve body.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a soft sealing gate valve.
Background
The opening and closing part of the soft sealing gate valve is a gate plate, the moving direction of the gate plate is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. The gate plate has two sealing surfaces, and the two sealing surfaces of the most commonly used mode gate valve form a wedge shape, and the wedge angle varies with valve parameters.
After the existing soft sealing gate valve is used for a long time, the sealing performance of the gate plate is reduced due to abrasion of the gate plate and the valve seat, so that the use of the gate valve is not facilitated.
To solve this problem, the present invention has been made.
Disclosure of Invention
Therefore, the invention provides a soft sealing gate valve with simple structure and good sealing effect.
In order to solve the technical problems, the soft sealing gate valve comprises a valve body, a valve cover arranged on the valve body, a water inlet channel, a water outlet channel and a valve seat arranged between the water inlet channel and the water outlet channel, wherein the water inlet channel and the water outlet channel are formed in the radial direction of the valve body, the valve body is provided with a valve plate for sealing the valve seat, the valve body is provided with a valve rod for opening and closing the valve plate, a V-shaped sliding groove is formed in the valve body, a propping plate is arranged on the inner wall of the sliding groove, a pushing block is arranged in the sliding groove in a sliding manner, the pushing block is arranged between the propping plates and propped against the pushing plate, hydraulic liquid is arranged in a cavity of the pushing block in the sliding groove, and a hydraulic pushing device for pressurizing the hydraulic liquid to push the pushing block to slide downwards and resist the propping plate so as to deform the valve plate is arranged on the valve body.
The further improvement is that: the hydraulic pushing device comprises a liquid inlet pipe, the liquid inlet pipe penetrates through the valve body, a liquid inlet channel is formed in the valve plate, one end of the liquid inlet channel is communicated with a hydraulic liquid, the other end of the liquid inlet channel is connected with a first spring hose, the other end of the first spring hose is communicated with the liquid inlet pipe, and an infusion device is arranged at the other end of the liquid inlet pipe.
The further improvement is that: the infusion device comprises a liquid tank, a placing groove communicated with a water inlet channel is formed in the valve body, the liquid tank is arranged in the placing groove, hydraulic liquid is arranged in the liquid tank, an infusion tube is arranged on the liquid tank, the infusion tube penetrates out of the valve body, a second spring hose is arranged on the infusion tube, the other end of the second spring hose is communicated with the liquid inlet tube, a pushing device for pushing the hydraulic liquid to enter the liquid inlet channel is arranged in the liquid tank, a sliding device for driving the liquid tank to enter the water inlet channel downwards to enable the pushing device to start is further arranged on the valve body, and an opening and closing valve for controlling the hydraulic liquid to enter is further arranged on the liquid inlet tube.
The further improvement is that: the pushing device comprises a pushing rod, the pushing rod is arranged on the liquid tank in a sliding penetrating mode, one end of the pushing rod is provided with a pushing plate, the pushing plate is located in the liquid tank, and the other end of the pushing rod is provided with a baffle and the baffle is located outside the liquid tank.
The further improvement is that: the sliding device comprises a square sliding rod, the sliding rod is arranged on the valve body in a sliding penetrating mode, the end portion of the sliding rod is connected with the liquid tank, a screw is arranged on the valve body in a rotating mode, one end of the screw is in threaded transmission with the sliding rod, and the other end of the screw penetrates out of the valve body.
The further improvement is that: the liquid tank further comprises a first spring, the first spring is sleeved on the pushing rod, one end of the first spring resists against the baffle plate, and the other end of the first spring resists against the outer wall of the liquid tank.
The further improvement is that: the device comprises a sliding groove, and is characterized by further comprising a top pressing plate, wherein the top pressing plate is arranged at the bottom of the sliding groove in a sliding manner, the top pressing plate is propped against the pushing block, and a tensioning return piece is arranged between the top pressing plate and the sliding groove.
The further improvement is that: the tensioning return piece is as follows: and the second spring is arranged between the top pressing plate and the bottom of the sliding groove.
The further improvement is that: the valve rod is provided with a first hand wheel.
The further improvement is that: and a second hand wheel is arranged on the screw rod.
By adopting the technical scheme, the invention has the beneficial effects that:
simple structure and good sealing effect. When the valve is sealed, when the pushing block pushes against the top plate, the valve plate can deform, so that the valve plate can be better sealed on the valve seat, the sealing performance of the valve can be improved, compensation can be given after the valve plate is worn, and therefore, the valve plate is better sealed and has better sealing effect. But also can prevent the water hammer from being directly hit on the valve plate, thereby prolonging the service life of the valve.
Drawings
Fig. 1 is a schematic view of a soft seal gate valve according to an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of the embodiment a of the present invention.
Fig. 3 is an enlarged schematic view of the structure of embodiment B of the present invention.
Detailed Description
The invention will now be further described with reference to the drawings and specific examples.
Referring to fig. 1-3, the embodiment of the invention discloses a soft sealing gate valve, which comprises a valve body 1, a valve cover 3 arranged on the valve body 1, a water inlet channel 2 and a water outlet channel which are radially arranged along the valve body 1, a valve seat arranged between the water inlet channel 2 and the water outlet channel, and a liquid inlet pipe 13, wherein the valve body 1 is provided with a valve plate 5 for sealing the valve seat, the valve body 1 is provided with a valve rod 4 for opening and closing the valve plate 5, a V-shaped sliding groove 6 is arranged in the valve body 1, the inner wall of the sliding groove 6 is provided with a propping plate 7, a pushing block 8 is arranged in the sliding groove 6 in a sliding manner, the pushing block 8 is arranged between the propping plate 7 and propped against the pushing plate, the sliding groove 6 is provided with hydraulic liquid in a cavity of the pushing block 8, the liquid inlet pipe 13 is arranged on the valve body 1 in a penetrating manner, one end of the liquid inlet channel 11 is communicated with the hydraulic liquid, the other end of the liquid inlet channel 11 is connected with a first spring hose 12, the other end of the first spring hose 12 is communicated with the liquid inlet pipe 13, and the other end of the liquid inlet pipe 13 is provided with a transfusion device.
Specifically, the infusion device comprises a liquid tank 14, a placing groove 15 communicated with a water inlet channel 2 is formed in a valve body 1, the liquid tank 14 is arranged in the placing groove 15, hydraulic liquid is arranged in the liquid tank 14, an infusion tube 20 is arranged on the liquid tank 14, the infusion tube 20 penetrates out of the valve body 1, a second spring hose 21 is arranged on the infusion tube 20, the other end of the second spring hose 21 is communicated with the liquid inlet tube 13, an opening and closing valve 131 used for controlling the hydraulic liquid to enter is further arranged on the liquid inlet tube 13, a push rod 18 is arranged on the liquid tank 14 in a sliding mode, a push plate 17 is arranged at one end of the push rod 18 and is positioned in the liquid tank 14, a baffle 19 is arranged at the other end of the push rod 18 and is positioned outside the liquid tank 14, a square sliding rod 22 is arranged on the valve body 1 in a sliding mode, the end portion of the sliding rod 22 is connected with the liquid tank 14, a screw 23 is arranged on the valve body 1 in a rotating mode, one end of the screw 23 is in threaded transmission mode with the sliding rod 22, and the other end of the screw 23 penetrates out of the valve body 1.
In order to be convenient for opening and closing the valve plate 5, the hydraulic valve further comprises a first spring and a top pressing plate 9, wherein the first spring is sleeved on the pushing rod 18, one end of the first spring is against the baffle 19, the other end of the first spring is against the outer wall of the liquid tank 14, the top pressing plate 9 is slidably arranged at the bottom of the sliding groove 6, the top pressing plate 9 is against the pushing block 8, a second spring 10 is arranged between the top pressing plate 9 and the sliding groove 6, and the second spring 10 is arranged between the top pressing plate 9 and the bottom of the sliding groove 6.
For the convenience of rotating the valve rod 4, a first hand wheel is arranged on the valve rod 4.
In order to facilitate the rotation of the screw 23, a second hand wheel is provided on the screw 23.
Working principle:
when the gate valve is to be closed, the screw 23 is rotated firstly, the screw 23 is in threaded transmission with the sliding rod 22, so that the sliding rod 22 drives the liquid tank 14 to downwards enter the water inlet channel 2, then the opening and closing valve 131 is opened, so that the liquid inlet pipe 13 is communicated, then the valve rod 4 is rotated, the valve rod 4 drives the valve plate 5 to downwards seal the valve seat, at the moment, the water inlet channel 2 generates a water hammer, the water hammer pushes the baffle 19 to slide, the baffle 19 pushes the hydraulic liquid in the liquid tank 14 to be output from the infusion pipe 20, flows into the second spring hose 21, then enters the first spring hose 12 from the liquid inlet pipe 13, then enters the liquid inlet channel 11 from the first spring hose 12 and then enters the sliding groove 6, so that the pushing block 8 is pushed to downwards slide, the pushing block 8 is propped against the top plate 7 and is tightly expanded, so that the valve plate 5 is tightly propped against the valve seat, and the valve plate 5 is better sealed. The pushing block 8 slides downwards and pushes the pressing plate 9 downwards, compressing the second spring 10 and simultaneously applying force to the bottom of the valve plate 5, so that the valve plate is better sealed on the valve body 1. Then the on-off valve 131 is closed, so that the water hammer can still keep tension sealing after passing. Meanwhile, the water hammer acts on the baffle 19, and the water hammer can be eliminated through a series of transmission, so that the water hammer is prevented from directly striking the valve plate 5, and the valve plate 5 is protected.
When the gate valve is to be opened, the screw 23 is reversed, so that the liquid tank 14 enters the placing groove 15, the opening and closing valve 131 is opened, the second spring 10 is reset, the pressure difference between the liquid tank 14 and the sliding groove 6 is added, the hydraulic liquid returns, the pushing block 8 returns, the pushing against the top plate 7 is released, the valve plate 5 deforms and returns, the valve plate 5 can be opened better when the valve rod 4 is rotated by a worker, the abrasion of the valve plate 5 is reduced, and the service life is further prolonged.
While the basic principles and main features of the present invention and advantages thereof have been shown and described, it will be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, which are described merely by way of illustration of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a soft sealing gate valve, includes the valve body, set up in valve gap on the valve body, along radial inlet channel and the outlet channel of seting up of valve body, locate the disk seat between inlet channel and the outlet channel, the valve body is located the disk seat position and is equipped with the valve plate that is used for airtight disk seat, be equipped with the valve rod of opening and close the valve plate on the valve body, its characterized in that: the valve is characterized in that a V-shaped sliding groove is formed in the valve body, a supporting plate is arranged on the inner wall of the sliding groove, a pushing block is arranged in the sliding groove in a sliding manner, the pushing block is arranged between the supporting plates and is made against the supporting plate, hydraulic liquid is arranged in a cavity of the pushing block, a hydraulic pushing device used for pressurizing the hydraulic liquid and pushing the pushing block to slide downwards and resist against the supporting plate so as to enable a valve plate to deform is arranged on the valve body, the hydraulic pushing device comprises a liquid inlet pipe, the liquid inlet pipe penetrates through the valve body, a liquid inlet channel is formed in the valve plate, one end of the liquid inlet channel is communicated with the hydraulic liquid, a first spring hose is connected with the other end of the liquid inlet channel, the other end of the first spring hose is communicated with the liquid inlet pipe, a liquid inlet pipe is arranged at the other end of the liquid inlet pipe, the liquid inlet device comprises a liquid tank, a placing groove communicated with the liquid inlet channel is formed in the valve body, the liquid tank is arranged in the placing groove, the liquid tank is provided with the hydraulic liquid, the liquid tank is provided with a liquid inlet pipe, the liquid pipe penetrates out of the liquid inlet pipe, the liquid inlet pipe is provided with a second spring, the second spring is arranged on the liquid inlet pipe, the second spring hose is connected with the liquid inlet pipe, and the liquid inlet pipe is further communicated with the liquid inlet pipe, and the liquid inlet pipe is driven to the liquid inlet device, and the liquid inlet pipe is further enters the liquid inlet device.
2. A soft seal gate valve according to claim 1, wherein: the pushing device comprises a pushing rod, the pushing rod is arranged on the liquid tank in a sliding penetrating mode, one end of the pushing rod is provided with a pushing plate, the pushing plate is located in the liquid tank, and the other end of the pushing rod is provided with a baffle and the baffle is located outside the liquid tank.
3. A soft seal gate valve according to claim 2, wherein: the sliding device comprises a square sliding rod, the sliding rod is arranged on the valve body in a sliding penetrating mode, the end portion of the sliding rod is connected with the liquid tank, a screw is arranged on the valve body in a rotating mode, one end of the screw is in threaded transmission with the sliding rod, and the other end of the screw penetrates out of the valve body.
4. A soft seal gate valve according to claim 2, wherein: the liquid tank further comprises a first spring, the first spring is sleeved on the pushing rod, one end of the first spring resists against the baffle plate, and the other end of the first spring resists against the outer wall of the liquid tank.
5. A soft seal gate valve according to claim 1, wherein: the device comprises a sliding groove, and is characterized by further comprising a top pressing plate, wherein the top pressing plate is arranged at the bottom of the sliding groove in a sliding manner, the top pressing plate is propped against the pushing block, and a tensioning return piece is arranged between the top pressing plate and the sliding groove.
6. A soft seal gate valve as defined in claim 5, wherein: the tensioning return piece is a second spring, and the second spring is arranged between the top pressing plate and the bottom of the sliding groove.
7. A soft seal gate valve according to claim 1, wherein: the valve rod is provided with a first hand wheel.
8. A soft seal gate valve according to claim 3, wherein: and a second hand wheel is arranged on the screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311748252.8A CN117432825B (en) | 2023-12-19 | 2023-12-19 | Soft sealing gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311748252.8A CN117432825B (en) | 2023-12-19 | 2023-12-19 | Soft sealing gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117432825A CN117432825A (en) | 2024-01-23 |
| CN117432825B true CN117432825B (en) | 2024-03-12 |
Family
ID=89553747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311748252.8A Active CN117432825B (en) | 2023-12-19 | 2023-12-19 | Soft sealing gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117432825B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD233402A5 (en) * | 1985-04-19 | 1986-02-26 | Jakovic,Mladen,Ch | WEDGE SLIDE |
| ITTO970885A1 (en) * | 1997-10-06 | 1999-04-06 | Gevipi Ag | MULTI-WAY INTERCEPTION OR DEVIATION VALVE. |
| CN204900884U (en) * | 2015-07-13 | 2015-12-23 | 哈托利海托阀门（杭州）有限公司 | High sealed small -bore gate valve |
| CN211501856U (en) * | 2019-12-30 | 2020-09-15 | 宇明阀门集团有限公司 | Novel two-way soft sealing gate valve |
| CN214305377U (en) * | 2020-12-31 | 2021-09-28 | 国泰通能源设备有限公司 | Dustproof flange gas gate valve |
| CN215257926U (en) * | 2021-06-29 | 2021-12-21 | 福建博钛阀门制造有限公司 | Rising stem soft seal gate valve with flange plate |
| CN216407905U (en) * | 2021-12-03 | 2022-04-29 | 泉瓦特斯阀门有限公司 | Brass screw thread gate valve with filtering capability |
| CN115143297A (en) * | 2022-06-28 | 2022-10-04 | 苏州纽威阀门股份有限公司 | Expanding type double-gate plate flat gate valve |
| CN115539663A (en) * | 2022-10-20 | 2022-12-30 | 浙江高电阀门有限公司 | High leakproofness gate valve |
| CN219388755U (en) * | 2023-04-10 | 2023-07-21 | 南安越海消防科技有限责任公司 | Hydraulic control valve with filtering function |
| CN116608343A (en) * | 2023-06-26 | 2023-08-18 | 浙江永瑞气动有限公司 | Self-sealing quick pneumatic connector |
| CN116697069A (en) * | 2018-08-13 | 2023-09-05 | 普罗塞夫运营有限责任公司 | Valve |
| CN219774845U (en) * | 2023-05-31 | 2023-09-29 | 江苏艾伦弗罗机械制造有限公司 | Sealing assembly and hydraulic gate valve |
| 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 |
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| US7632381B2 (en) * | 2001-03-12 | 2009-12-15 | Curtiss-Wright Flow Control Corporation | Systems for providing continuous containment of delayed coker unit operations |
-
2023
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD233402A5 (en) * | 1985-04-19 | 1986-02-26 | Jakovic,Mladen,Ch | WEDGE SLIDE |
| ITTO970885A1 (en) * | 1997-10-06 | 1999-04-06 | Gevipi Ag | MULTI-WAY INTERCEPTION OR DEVIATION VALVE. |
| CN204900884U (en) * | 2015-07-13 | 2015-12-23 | 哈托利海托阀门（杭州）有限公司 | High sealed small -bore gate valve |
| CN116697069A (en) * | 2018-08-13 | 2023-09-05 | 普罗塞夫运营有限责任公司 | Valve |
| CN211501856U (en) * | 2019-12-30 | 2020-09-15 | 宇明阀门集团有限公司 | Novel two-way soft sealing gate valve |
| CN214305377U (en) * | 2020-12-31 | 2021-09-28 | 国泰通能源设备有限公司 | Dustproof flange gas gate valve |
| CN215257926U (en) * | 2021-06-29 | 2021-12-21 | 福建博钛阀门制造有限公司 | Rising stem soft seal gate valve with flange plate |
| CN216407905U (en) * | 2021-12-03 | 2022-04-29 | 泉瓦特斯阀门有限公司 | Brass screw thread gate valve with filtering capability |
| CN115143297A (en) * | 2022-06-28 | 2022-10-04 | 苏州纽威阀门股份有限公司 | Expanding type double-gate plate flat gate valve |
| CN115539663A (en) * | 2022-10-20 | 2022-12-30 | 浙江高电阀门有限公司 | High leakproofness gate valve |
| CN219388755U (en) * | 2023-04-10 | 2023-07-21 | 南安越海消防科技有限责任公司 | Hydraulic control valve with filtering function |
| CN219774845U (en) * | 2023-05-31 | 2023-09-29 | 江苏艾伦弗罗机械制造有限公司 | Sealing assembly and hydraulic gate valve |
| CN116608343A (en) * | 2023-06-26 | 2023-08-18 | 浙江永瑞气动有限公司 | Self-sealing quick pneumatic connector |
| 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 |
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| HAWLE软密封闸阀;叶建舟;;城镇供水;19970615(第03期);全文 * |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN117432825A (en) | 2024-01-23 |
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