CN116104957A - Flow regulating valve for heat supply pipeline network - Google Patents
Flow regulating valve for heat supply pipeline network Download PDFInfo
- Publication number
- CN116104957A CN116104957A CN202310201527.XA CN202310201527A CN116104957A CN 116104957 A CN116104957 A CN 116104957A CN 202310201527 A CN202310201527 A CN 202310201527A CN 116104957 A CN116104957 A CN 116104957A
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- threaded rod
- valve
- plate
- push
- flow regulating
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 46
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000002146 bilateral effect Effects 0.000 claims description 7
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 40
- 230000008569 process Effects 0.000 abstract description 38
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—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
- 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
-
- 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
- F16K1/46—Attachment of sealing rings
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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
- F16K1/52—Means for additional adjustment of the rate of flow
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Details Of Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a flow regulating valve for a heat supply pipeline network, which comprises a valve body, wherein a threaded rod A is arranged at the top of the valve body in a sliding manner, a threaded rod B is arranged at the top of the threaded rod A, an installation bin is arranged in the threaded rod A, and the bottom of the threaded rod B extends to the inside of the installation bin; according to the invention, under the cooperation of the sealing plate A, the inserted link, the bottom cover, the push rod, the push plate, the connecting groove, the spring and the stable point rod, the sealing plate A can be driven to move upwards in the process of closing the valve by moving the threaded rod A downwards, and then after the threaded rod A is closed, the sealing plate A can also seal the through hole at the bottom, so that the valve is sealed for the second time, a good sealing effect can be kept in the long-time use process of the valve, and when one sealing plate is damaged, the other sealing plate can be sealed, so that the service life of the valve is greatly prolonged, and the valve can be sealed normally.
Description
Technical Field
The invention relates to the technical field of regulating valves, in particular to a flow regulating valve for a heating pipeline network.
Background
In the field of industrial automation process control, a final control element for changing process parameters such as medium flow, pressure, temperature, liquid level and the like by power operation through receiving a control signal output by a control unit is generally composed of an actuating mechanism and a valve, and if the control valve is characterized by stroke, the control valve can be divided into a straight stroke and an angular stroke according to the power used by the actuating mechanism, and can be divided into a pneumatic control valve, an electric control valve and a hydraulic control valve; the characteristics are classified into linear characteristics, equal percentage characteristics and parabolic characteristics according to functions and characteristics.
The existing regulating valve has the following defects:
the regulating valve basically utilizes the ball valve inside the regulating valve to switch and close the valve in the using process, but in the daily using process, the ball valve inside the regulating valve generates certain abrasion, when the ball valve inside the regulating valve is abraded to a certain degree, leakage occurs, the valve is basically not provided with leakage detection equipment, and when the valve leaks in a small amplitude, workers hardly observe whether the valve leaks from a distance, so that certain dangerous situations can occur to the valves in the normal working environment;
the valve is basically used for stopping substances flowing in the valve in the using process, but in the using process, the flow in the valve is sometimes required to be controlled, and the general valve is difficult to control, so that the difficulty in controlling the flow is increased, and the valve is inconvenient to use.
Disclosure of Invention
The invention aims to provide a flow regulating valve for a heat supply pipeline network, which is used for solving the problems that in the use process of the regulating valve provided in the background technology, the valve is basically opened and closed by utilizing an internal ball valve, but in the daily use process, the internal ball valve is worn to a certain extent, leakage occurs when the internal ball valve is worn to a certain extent, leakage detection equipment is not arranged on the valve basically, and when the valve leaks to a small extent, workers can hardly observe whether the valve leaks from a distance, so that certain dangerous situations can occur to the valves in the normal working environment; the valve is basically used for stopping substances flowing in the valve in the using process, but in the using process, the flow in the valve is sometimes required to be controlled, and the general valve is difficult to control, so that the difficulty in controlling the flow is increased, and the use-related problems are inconvenient.
In order to achieve the above purpose, the present invention provides the following technical solutions: including the valve body, the top slip of valve body is equipped with threaded rod A, threaded rod A's top is equipped with threaded rod B, threaded rod A's inside is equipped with the installation storehouse, threaded rod B's bottom extends to the inside of installation storehouse, threaded rod B's bottom is equipped with the bearing frame, the bilateral symmetry of bearing frame bottom is equipped with L template, one side of L template articulates there is the hinge plate, one side of hinge plate is equipped with turns over the board, threaded rod A's bottom is equipped with closing plate B, closing plate B's bottom is equipped with the inserted bar, the top of valve body is equipped with the top cap, the top of top cap is equipped with the collar, the bottom of valve body is equipped with the bottom, the bottom of bottom is equipped with seal assembly.
Preferably, the sealing component comprises closing plate A, push rod, push pedal, spread groove and spring, the inside bilateral symmetry of bottom is equipped with steady point pole, the outside cover of steady point pole is equipped with the spring, the outside sliding connection of steady point pole has the push pedal, one side of push pedal is equipped with the spread groove, the outside of inserted bar is equipped with closing plate A, the bilateral symmetry of closing plate A bottom is equipped with the push rod.
Preferably, a connecting hole is formed in the top of the sealing plate A, and the sealing plate A and the inserted rod are mutually matched.
Preferably, a sealing ring is arranged on the outer side of the inserted link, and the sealing ring is made of rubber materials.
Preferably, the two sides of the threaded rod A are symmetrically provided with mounting grooves, and the hinged plates are mutually matched with the mounting grooves.
Preferably, an inclined plane groove is formed in one side of the push plate, and the inclined plane groove is mutually matched with the inserted link.
Preferably, an inclined plane is arranged on one side of the top of the push plate, the bottom of the push rod is made of an arc-shaped structure, and the push rod is mutually matched with the push plate.
Preferably, the bottoms of the top cover and the bottom cover are both provided with fixing bolts, and the top cover and the bottom cover are connected with the valve body through the fixing bolts.
Preferably, a partition plate is arranged in the valve body, and a through hole is formed in the top of the partition plate.
Compared with the prior art, the invention provides the flow regulating valve for the heat supply pipeline network, which has the following beneficial effects:
1. according to the invention, under the cooperation of the sealing plate A, the inserted link, the bottom cover, the push rod, the push plate, the connecting groove, the spring and the stable point rod, the sealing plate A can be driven to move upwards in the process of closing the valve by moving the threaded rod A downwards, and then after the threaded rod A is closed, the sealing plate A can also seal the through hole at the bottom, so that the valve is sealed for the second time, a good sealing effect can be kept in the long-time use process of the valve, and when one sealing plate is damaged, the other sealing plate can be sealed, so that the service life of the valve is greatly prolonged, and the valve can be sealed normally.
2. According to the invention, under the cooperation of the mounting bin, the turning plate, the hinge plate, the bearing seat, the L-shaped plate and the threaded rod B, the flow of the valve can be regulated in the use process of the regulating valve, so that the valve can be matched according to actual working conditions, the use effect of the valve is effectively improved, the normal use condition of the valve is ensured, and the valve is ensured to be suitable for various conditions.
Drawings
FIG. 1 is a front cross-sectional view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is an enlarged view of FIG. 1 at A in accordance with the present invention;
FIG. 4 is an enlarged view of FIG. 1 at B in accordance with the present invention;
fig. 5 is a perspective view of the push plate of the present invention.
In the figure: 1. a valve body; 2. a top cover; 3. a threaded rod A; 4. a threaded rod B; 5. a sealing plate A; 6. a sealing plate B; 7. a rod; 8. a bottom cover; 9. a mounting ring; 10. a push rod; 11. a push plate; 12. a connecting groove; 13. a spring; 14. a steady point rod; 15. a mounting bin; 16. turning plate; 17. a hinged plate; 18. a bearing seat; 19. an L-shaped plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a flow control valve for heat supply pipeline network, including valve body 1, the top slip of valve body 1 is equipped with threaded rod A3, the top of threaded rod A3 is equipped with threaded rod B4, threaded rod A3's inside is equipped with installation storehouse 15, threaded rod B4's bottom extends to the inside of installation storehouse 15, threaded rod B4's bottom is equipped with bearing frame 18, bearing frame 18 bottom's bilateral symmetry is equipped with L template 19, one side of L template 19 articulates there is hinged plate 17, one side of hinged plate 17 is equipped with turns over board 16, threaded rod A3's bottom is equipped with closing plate B6, closing plate B6's bottom is equipped with inserted bar 7, valve body 1's top is equipped with top cap 2, top of top cap 2 is equipped with collar 9, valve body 1's bottom is equipped with bottom 8, bottom 8's bottom is equipped with seal assembly.
As a preferable scheme of the present embodiment: the sealing component comprises a sealing plate A5, a push rod 10, a push plate 11, a connecting groove 12 and a spring 13, wherein the two sides of the inner part of the bottom cover 8 are symmetrically provided with a stable point rod 14, the outer side of the stable point rod 14 is sleeved with the spring 13, the outer side of the stable point rod 14 is slidably connected with the push plate 11, one side of the push plate 11 is provided with the connecting groove 12, the outer side of the inserted rod 7 is provided with the sealing plate A5, the two sides of the bottom of the sealing plate A5 are symmetrically provided with the push rod 10, the sealing plate A5 can be driven to move upwards when the threaded rod A3 moves downwards to close a valve, and then after the threaded rod A3 is closed, the sealing plate A5 can also seal a through hole at the bottom, so that the valve is secondarily sealed, and a good sealing effect can be preserved in the long-time use process of the valve.
As a preferable scheme of the present embodiment: the top of closing plate A5 is equipped with the connecting hole, and closing plate A5 and inserted bar 7 looks adaptation for inserted bar 7 can slide along closing plate A5, makes things convenient for follow-up drive closing plate A5 to reciprocate.
As a preferable scheme of the present embodiment: the outside of inserted bar 7 is equipped with the sealing ring, and the sealing ring is made by rubber material, guarantees the sealed effect of inserted bar 7 in the slip in-process.
As a preferable scheme of the present embodiment: the mounting grooves are symmetrically formed in the two sides of the threaded rod A3, and the hinge plates 17 are mutually matched with the mounting grooves, so that subsequent mounting work is facilitated, and the hinge plates 17 can be turned over.
As a preferable scheme of the present embodiment: one side of the push plate 11 is provided with an inclined plane groove, the inclined plane groove is mutually matched with the inserted link 7, and in the process of downward movement of the inserted link 7, the inserted link 7 can push the two groups of push plates 11 to be separated along the inclined plane groove.
As a preferable scheme of the present embodiment: one side at push pedal 11 top is equipped with the inclined plane, and the bottom of push rod 10 is made by arc structure, and push rod 10 and push pedal 11 looks adaptation each other, at the in-process of two sets of push pedal 11 separation, its inclined plane can lead push rod 10, and then promotes push pedal 11 and shift up.
As a preferable scheme of the present embodiment: the bottoms of the top cover 2 and the bottom cover 8 are provided with fixing bolts, and the top cover 2 and the bottom cover 8 are connected with the valve body 1 through the fixing bolts, so that the subsequent disassembly, assembly and maintenance are convenient.
As a preferable scheme of the present embodiment: the inside of valve body 1 is equipped with the baffle, and the top of baffle is equipped with the through-hole, makes things convenient for follow-up sealed.
In the embodiment 1, as shown in fig. 1-5, when the valve needs to be closed, firstly, a downward rotating threaded rod A3 is started to drive a sealing plate B6 to move downward, then the sealing plate B6 drives an inserting rod 7 to move in the downward moving process, then the inserting rod 7 drives two groups of pushing plates 11 to separate in the downward moving process, and the two groups of pushing plates 11 slide along a connecting groove 12, so that stability in the moving process is ensured, then the two groups of pushing plates 11 push two groups of pushing rods 10 in the sliding process, at the moment, the two groups of pushing rods 10 drive the sealing plate A5 to move upward, the sealing plate A5 and the sealing plate B6 are close to each other in the upward moving process, and in the mutually approaching process, the sealing plate A5 and the sealing plate B6 simultaneously seal the positions of the through holes, so that the valve can be secondarily sealed in the closing process, and the stability in the sealing process is ensured, when the sealed position at one place is damaged, the other place can be similarly closed, so that leakage occurs;
in embodiment 2, as shown in fig. 1-5, when the flow in the valve needs to be controlled, the threaded rod B4 is rotated first, at this time, the threaded rod B4 moves down along the track of the threaded rod A3, then the threaded rod B4 does not drive the L-shaped plate 19 and the hinged plate 17 to rotate under the action of the bearing seat 18 in the downward moving process, and then the bearing seat 18 drives the L-shaped plate 19 to move down, and because the hinged plate 17 and the threaded rod A3 are hinged, the L-shaped plate 19 drives the hinged plate 17 to turn over in the downward moving process, and then the hinged plate 17 drives the turning plate 16 to turn over in the turning process, when the turning plate 16 turns over to a certain extent, the fixed position in the valve body 1 is blocked, so that the valve body 1 can flow through, thereby effectively controlling the flow of objects, and being convenient for adapting to various environments.
Working principle: when the valve is in use, firstly, the downward rotary threaded rod A3 is started to drive the sealing plate B6 to move downwards, then the sealing plate B6 drives the inserted rod 7 to move in the downward moving process, then the inserted rod 7 drives the two groups of push plates 11 to separate in the downward moving process, the two groups of push plates 11 slide along the connecting groove 12 so as to ensure the stability in the moving process, then the two groups of push plates 11 push the two groups of push rods 10 in the sliding process, at the moment, the two groups of push rods 10 drive the sealing plate A5 to move upwards, the sealing plate A5 and the sealing plate B6 are mutually close in the upward moving process, and the sealing plate A5 and the sealing plate B6 simultaneously seal the positions of the through openings in the mutually approaching process, so that the valve can be secondarily sealed in the closing process, the stability in the sealing process is ensured, when one sealed position is damaged, the other position can be similarly closed, and leakage occurs;
when the flow in the valve is required to be controlled, the threaded rod B4 is rotated at first, at this moment, the threaded rod B4 moves downwards along the track of the threaded rod A3, then the threaded rod B4 does not drive the L-shaped plate 19 and the hinged plate 17 to rotate under the action of the bearing seat 18 in the downward moving process, and then the bearing seat 18 drives the L-shaped plate 19 to move downwards, the hinged plate 17 is driven to overturn by the hinged plate 17 in the downward moving process due to the hinged plate 17 and the threaded rod A3 being in the hinged state, then the hinged plate 17 drives the overturning plate 16 to overturn in the overturning process, and when the overturning plate 16 overturns to a certain degree, the fixed part in the valve body 1 is blocked, so that the volume of the valve body 1 can circulate, the flow of objects is effectively controlled, and various environments are conveniently adapted.
Finally, it should be noted that the above description is only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and that the simple modification and equivalent substitution of the technical solution of the present invention can be made by those skilled in the art without departing from the spirit and scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides a flow control valve for heat supply pipeline network, includes valve body (1), its characterized in that: the top of valve body (1) slides and is equipped with threaded rod A (3), the top of threaded rod A (3) is equipped with threaded rod B (4), the inside of threaded rod A (3) is equipped with installation storehouse (15), the bottom of threaded rod B (4) extends to the inside of installation storehouse (15), the bottom of threaded rod B (4) is equipped with bearing frame (18), the bilateral symmetry of bearing frame (18) bottom is equipped with L template (19), one side of L template (19) articulates there is hinged plate (17), one side of hinged plate (17) is equipped with turns over board (16), the bottom of threaded rod A (3) is equipped with closing plate B (6), the bottom of closing plate B (6) is equipped with inserted bar (7), the top of valve body (1) is equipped with top cap (2), the top of top cap (2) is equipped with collar (9), the bottom of valve body (1) is equipped with bottom (8), the bottom of bottom (8) is equipped with seal assembly.
2. A flow regulating valve for a heating conduit network according to claim 1, wherein: seal assembly comprises closing plate A (5), push rod (10), push pedal (11), spread groove (12) and spring (13), the inside bilateral symmetry of bottom (8) is equipped with steady point pole (14), the outside cover of steady point pole (14) is equipped with spring (13), the outside sliding connection of steady point pole (14) has push pedal (11), one side of push pedal (11) is equipped with spread groove (12), the outside of inserted bar (7) is equipped with closing plate A (5), the bilateral symmetry of closing plate A (5) bottom is equipped with push rod (10).
3. A flow regulating valve for a heating conduit network according to claim 1, wherein: the top of closing plate A (5) is equipped with the connecting hole, closing plate A (5) and inserted bar (7) looks adaptation each other.
4. A flow regulating valve for a heating conduit network according to claim 1, wherein: the outside of inserted bar (7) is equipped with the sealing ring, and the sealing ring is made by rubber material.
5. A flow regulating valve for a heating conduit network according to claim 1, wherein: the two sides of the threaded rod A (3) are symmetrically provided with mounting grooves, and the hinged plates (17) are mutually matched with the mounting grooves.
6. A flow regulating valve for a heating conduit network according to claim 2, wherein: one side of the push plate (11) is provided with an inclined plane groove, and the inclined plane groove is mutually matched with the inserted link (7).
7. A flow regulating valve for a heating conduit network according to claim 2, wherein: one side at the top of the push plate (11) is provided with an inclined plane, the bottom of the push rod (10) is made of an arc-shaped structure, and the push rod (10) and the push plate (11) are mutually matched.
8. A flow regulating valve for a heating conduit network according to claim 1, wherein: the bottom of top cap (2) and bottom (8) all are equipped with fixing bolt, top cap (2) and bottom (8) pass through fixing bolt and link to each other with valve body (1).
9. A flow regulating valve for a heating conduit network according to claim 1, wherein: the inside of valve body (1) is equipped with the baffle, and the top of baffle is equipped with the through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310201527.XA CN116104957B (en) | 2023-03-06 | 2023-03-06 | Flow regulating valve for heat supply pipeline network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310201527.XA CN116104957B (en) | 2023-03-06 | 2023-03-06 | Flow regulating valve for heat supply pipeline network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116104957A true CN116104957A (en) | 2023-05-12 |
| CN116104957B CN116104957B (en) | 2023-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310201527.XA Active CN116104957B (en) | 2023-03-06 | 2023-03-06 | Flow regulating valve for heat supply pipeline network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116104957B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1173995A (en) * | 1966-05-06 | 1969-12-10 | Financ Et Ind Des Ateliers Et | Improvements in Valves having Gate Blocks |
| CN209781707U (en) * | 2019-02-16 | 2019-12-13 | 天津奇昌阀门制造有限公司 | Leakproof marine mechanical valve |
| CN217153003U (en) * | 2022-04-09 | 2022-08-09 | 玉环浙帆阀门有限公司 | Stop valve |
| CN217814989U (en) * | 2022-07-04 | 2022-11-15 | 盐城龙威机械有限公司 | High leakproofness valve of preventing leaking |
-
2023
- 2023-03-06 CN CN202310201527.XA patent/CN116104957B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1173995A (en) * | 1966-05-06 | 1969-12-10 | Financ Et Ind Des Ateliers Et | Improvements in Valves having Gate Blocks |
| CN209781707U (en) * | 2019-02-16 | 2019-12-13 | 天津奇昌阀门制造有限公司 | Leakproof marine mechanical valve |
| CN217153003U (en) * | 2022-04-09 | 2022-08-09 | 玉环浙帆阀门有限公司 | Stop valve |
| CN217814989U (en) * | 2022-07-04 | 2022-11-15 | 盐城龙威机械有限公司 | High leakproofness valve of preventing leaking |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116104957B (en) | 2023-10-27 |
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