CN223294268U - A valve plate sealing structure for a triple eccentric butterfly valve - Google Patents
A valve plate sealing structure for a triple eccentric butterfly valveInfo
- Publication number
- CN223294268U CN223294268U CN202521540931.0U CN202521540931U CN223294268U CN 223294268 U CN223294268 U CN 223294268U CN 202521540931 U CN202521540931 U CN 202521540931U CN 223294268 U CN223294268 U CN 223294268U
- Authority
- CN
- China
- Prior art keywords
- valve plate
- valve
- plate
- sealing
- actuator
- 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
Landscapes
- Lift Valve (AREA)
Abstract
本实用新型涉及蝶阀技术领域，尤其涉及一种三偏心蝶阀的阀板密封结构。其技术方案包括：阀体，所述阀体的顶端安装有执行器；所述执行器上安装有手轮；所述阀体内转动安装有阀板，所述阀板的背面设有固定座；所述固定座共设有两个，且两个固定座在阀板上对称分布；所述执行器内安装有转轴，所述阀板通过转轴与执行器传动连接，且所述阀板通过转轴转动安装在阀体内；所述阀板背离固定座的一端通过螺栓安装有压板，所述压板与阀板之间夹持固定有第二密封圈；所述阀板为偏心圆台状，且所述压板和第二密封圈与阀板的形状相适配。本实用新型通过三偏心结构使阀板启闭无摩擦，配合易拆压板与适配密封圈，显著提升密封性、延长寿命且便于维护。
The present invention relates to the technical field of butterfly valves, and in particular to a valve plate sealing structure of a triple-eccentric butterfly valve. Its technical solution includes: a valve body, an actuator is installed on the top of the valve body; a handwheel is installed on the actuator; a valve plate is rotatably installed in the valve body, and a fixed seat is provided on the back of the valve plate; there are two fixed seats, and the two fixed seats are symmetrically distributed on the valve plate; a rotating shaft is installed in the actuator, the valve plate is connected to the actuator through the rotating shaft, and the valve plate is rotatably installed in the valve body through the rotating shaft; a pressure plate is installed on the end of the valve plate away from the fixed seat by bolts, and a second sealing ring is clamped and fixed between the pressure plate and the valve plate; the valve plate is in the shape of an eccentric cone, and the pressure plate and the second sealing ring are adapted to the shape of the valve plate. The present invention makes the valve plate open and close frictionlessly through the triple-eccentric structure, and cooperates with the easily disassembled pressure plate and the adapted sealing ring to significantly improve the sealing performance, extend the service life and facilitate maintenance.
Description
Technical Field
The utility model relates to the technical field of butterfly valves, in particular to a valve plate sealing structure of a three-eccentric butterfly valve.
Background
In the field of industrial production, the valve is used as a key device for controlling fluid flow, and is widely applied to various industries such as petroleum, chemical industry, electric power, water conservancy, pharmacy and the like.
In the opening and closing processes of the traditional valve, friction exists between sealing surfaces, and the sealing surfaces can be gradually worn after long-term use, so that the sealing performance is reduced. For example, in a butterfly valve, in the process of frequently opening and closing a sealing surface between a valve plate and a valve seat, the sealing surface is scratched, worn and the like due to the action of friction force, so that a medium is easy to leak. The valve can not only influence the normal use of the valve, but also cause energy waste and environmental pollution, and even can cause unqualified product quality for some industries with extremely high sealing requirements, such as chemical industry, pharmacy and the like, thereby bringing huge economic loss to enterprises. Most of the existing valve sealing structures adopt a single sealing mode, such as directly sealing between a valve plate and a valve seat, or arranging a sealing ring on a valve body. When facing complex working conditions, the single sealing structure often has difficulty in ensuring good sealing effect. For example, under high pressure conditions, the pressure of the medium may create a large impact force on the sealing surface, and a single seal structure may not withstand such pressure, resulting in leakage of the medium, and in some conditions involving corrosive media, the seal material may be susceptible to corrosion, thereby degrading the sealing performance. In addition, when the sealing structure is damaged, maintenance and replacement of the sealing member are often difficult, and a lot of time and labor costs are required.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides a valve plate sealing structure of a three-eccentric butterfly valve, which solves the problems in the background art.
The scheme for solving the technical problems is as follows:
a valve plate sealing structure of a triple offset butterfly valve, comprising:
The top end of the valve body is provided with an actuator;
A hand wheel is arranged on the actuator;
a valve plate is rotatably arranged in the valve body, and a fixed seat is arranged on the back surface of the valve plate;
The two fixing seats are arranged in total and are symmetrically distributed on the valve plate;
A rotating shaft is arranged in the actuator, the valve plate is in transmission connection with the actuator through the rotating shaft, and the valve plate is rotatably arranged in the valve body through the rotating shaft;
A pressing plate is arranged at one end, away from the fixed seat, of the valve plate through a bolt, and a second sealing ring is clamped and fixed between the pressing plate and the valve plate;
The valve plate is in an eccentric truncated cone shape, and the pressing plate and the second sealing ring are matched with the valve plate in shape.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, a first sealing ring matched with the valve plate is arranged on the inner wall of the valve body.
The beneficial effects of adopting the further scheme are as follows:
When the valve plate is in a closed state, the first sealing ring can be tightly attached to the valve plate to form a reliable sealing barrier, so that leakage of a medium from a gap between the valve plate and the valve body is effectively prevented, the overall sealing performance of the valve is greatly enhanced, the valve is ensured to reliably cut off medium flow under various working conditions, and the use scene with high sealing requirements is met.
Further, a plurality of threaded holes are formed in the surface of the pressing plate, mounting holes are formed in the positions, corresponding to the threaded holes, on the valve plate, and the bolts penetrate through the mounting holes to be in threaded connection with the threaded holes.
The beneficial effects of adopting the further scheme are as follows:
The connection mode enables the installation and the disassembly of the pressing plate and the valve plate to be very convenient. When the second sealing ring needs to be replaced or maintained, the pressing plate can be easily taken down only by loosening the bolts, the replacement operation of the sealing ring is completed, complex tools and complicated steps are not needed, the maintenance time is greatly shortened, the maintenance cost is reduced, and the use efficiency and maintainability of the valve are improved.
Further, the actuator is any one of an electric actuator, a pneumatic actuator or a hydraulic actuator, and a clutch is arranged between the hand wheel and the actuator and used for switching between an automatic control mode and a manual control mode.
The beneficial effects of adopting the further scheme are as follows:
Flexible and various control modes are provided. In the normal production process, an electric, pneumatic or hydraulic actuator can be selected for automatic control according to actual requirements, so that the valve can be accurately and quickly opened and closed, the requirement of automatic production is met, when an automatic control system fails or manual debugging and emergency operation are required, the automatic control system can be quickly switched to a manual control mode through a clutch, the valve can be operated by rotating a hand wheel, the reliable operation of the valve under various conditions is ensured, and the safety and the stability of production are improved.
Further, the sealing surface of the valve plate is of an eccentric truncated cone structure, and a generating line and a rotating shaft central line form a three-eccentric structure, wherein the three-eccentric structure comprises radial eccentricity of the rotating shaft central line and the center of the sealing surface of the valve plate, axial eccentricity of the rotating shaft central line and the center line of a flow passage of the valve body, and angle eccentricity of a conical generating line of the sealing surface of the valve plate and the center line of the rotating shaft.
The beneficial effects of adopting the further scheme are as follows:
The triple eccentric structure enables the valve plate to realize friction-free rotation between sealing surfaces in the opening and closing processes. When the valve is opened, the sealing surface is quickly separated, so that abrasion caused by friction of the sealing surface in the opening and closing processes of the traditional valve is avoided, the service life of the valve is greatly prolonged, meanwhile, the structure can ensure that the valve has good sealing performance in the closing process, the reliability and stability of the valve are improved, and production interruption and loss caused by valve faults are reduced.
Further, a sealing ring mounting groove is formed between the pressing plate and the valve plate, the section of the second sealing ring is trapezoid, and the large end of the second sealing ring is arranged towards the medium pressure direction.
The beneficial effects of adopting the further scheme are as follows:
When the medium pressure acts on the second sealing ring, the large end of the second sealing ring can be tightly attached to the corresponding part of the sealing ring mounting groove and the valve body due to the design of the trapezoid cross section, so that the sealing effect is enhanced. The structure can automatically adjust the sealing degree according to the pressure of the medium, can keep good sealing performance under the high-pressure working condition, effectively prevents the medium from leaking, and improves the adaptability and the reliability of the valve under different pressure conditions.
The utility model provides a valve plate sealing structure of a three-eccentric butterfly valve. The beneficial effects are as follows:
Bus bar and rotating shaft of valve plate sealing surface the center line forms a three-eccentric structure, comprises a rotation shaft center line and a valve plate radial eccentricity of the center of the sealing surface with centre of sealing surface radial eccentricity. This unique design allows the valve plate to open and close without friction between the sealing surfaces. Compared with the traditional butterfly valve, the friction-caused abrasion of the sealing surface is reduced, the service life of the valve is greatly prolonged, and the maintenance cost and the replacement frequency are reduced.
The first sealing ring matched with the valve plate is arranged on the inner wall of the valve body, when the valve plate is closed, the first sealing ring is tightly attached to the valve plate to form a first sealing line, so that leakage of a medium from a gap between the valve plate and the valve body is effectively prevented, and sealing reliability of the valve in a closed state is ensured. The valve plate is fixed with the second sealing ring through clamp plate and bolt, forms the sealing ring mounting groove between clamp plate and the valve plate, and the second sealing ring cross-section is trapezoidal and the big end is towards medium pressure direction. When the pressure of the medium acts, the second sealing ring can be tightly attached to the sealing position to form a second sealing guarantee, so that the sealing performance of the valve is further enhanced, and the valve is particularly suitable for working conditions with higher sealing requirements.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model.
In the drawings:
FIG. 1 is a schematic view of the rear view of the present utility model;
FIG. 2 is a schematic diagram of the front view of the present utility model;
FIG. 3 is a schematic view of the valve plate of the present utility model;
Fig. 4 is a schematic cross-sectional view of a valve plate according to the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. The valve comprises a valve body, 101 parts of a first sealing ring, 2 parts of an actuator, 201 parts of a hand wheel, 3 parts of a valve plate, 301 parts of a rotating shaft, 302 parts of a fixed seat, 303 parts of a pressing plate, 304 parts of a second sealing ring.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 4, an embodiment of the present utility model is as follows:
An embodiment I is a valve plate sealing structure of a triple offset butterfly valve, comprising:
the valve body 1, the top of the valve body 1 is provided with an actuator 2;
A hand wheel 201 is arranged on the actuator 2;
A valve plate 3 is rotatably arranged in the valve body 1, and a fixed seat 302 is arranged on the back surface of the valve plate 3;
The two fixing seats 302 are arranged in total, and the two fixing seats 302 are symmetrically distributed on the valve plate 3;
A rotating shaft 301 is arranged in the actuator 2, the valve plate 3 is in transmission connection with the actuator 2 through the rotating shaft 301, and the valve plate 3 is rotatably arranged in the valve body 1 through the rotating shaft 301;
One end of the valve plate 3, which is away from the fixed seat 302, is provided with a pressing plate 303 through a bolt, and a second sealing ring 304 is clamped and fixed between the pressing plate 303 and the valve plate 3;
The valve plate 3 is in an eccentric truncated cone shape, and the pressing plate 303 and the second sealing ring 304 are matched with the valve plate 3 in shape.
In order to realize flexible switching of the valve control mode and meet the operation requirements in different production scenes, as shown in fig. 1 to 4, the utility model further comprises:
The actuator 2 is any embodiment of an electric actuator, a pneumatic actuator or a hydraulic actuator, and a clutch is arranged between the hand wheel 201 and the actuator 2 for switching between an automatic control mode and a manual control mode, so that flexible and various control modes are provided. In the normal production process, the electric, pneumatic or hydraulic actuator 2 can be selected for automatic control according to actual requirements, so that the valve can be accurately and quickly opened and closed to meet the requirements of automatic production, and when an automatic control system fails or needs to be manually debugged or operated in emergency, the automatic control system can be quickly switched to a manual control mode through a clutch, the valve can be operated by rotating the hand wheel 201, the reliable operation of the valve under various conditions is ensured, and the safety and stability of production are improved.
In order to improve the comprehensive performance of the valve, including prolonging the service life, improving the sealing effect, facilitating maintenance and enhancing adaptability, as shown in fig. 1 to 4, the utility model further comprises:
The sealing surface of the valve plate 3 is of an eccentric truncated cone structure, a generating line and the central line of the rotating shaft 301 form a three-eccentric structure, the three-eccentric structure comprises radial eccentricity of the central line of the rotating shaft and the central line of the sealing surface of the valve plate, axial eccentricity of the central line of the rotating shaft and the central line of the flow passage of the valve body, and angle eccentricity of the conical generating line of the sealing surface of the valve plate and the central line of the rotating shaft, and the three-eccentric structure enables the sealing surfaces of the valve plate 3 to realize friction-free rotation in the opening and closing processes. When the valve is opened, the sealing surface is quickly separated, so that abrasion caused by friction of the sealing surface in the opening and closing processes of the traditional valve is avoided, the service life of the valve is greatly prolonged, meanwhile, the structure can ensure that the valve has good sealing performance in the closing process, the reliability and stability of the valve are improved, and production interruption and loss caused by valve faults are reduced. The surface of clamp plate 303 has seted up a plurality of screw holes, and the mounting hole has been seted up to the position that corresponds the screw hole on the valve plate 3, and the bolt passes mounting hole and screw hole threaded connection, and this kind of connected mode makes clamp plate 303 and valve plate 3's installation and dismantlement become very convenient. When the second sealing ring 304 needs to be replaced or maintained, the pressing plate 303 can be easily removed only by loosening the bolts, the replacement operation of the sealing ring is completed, complicated tools and complicated steps are not needed, the maintenance time is greatly shortened, the maintenance cost is reduced, and the use efficiency and maintainability of the valve are improved. A seal ring installation groove is formed between the pressing plate 303 and the valve plate 3, the cross section of the second seal ring 304 is trapezoidal, the large end of the second seal ring 304 is arranged towards the direction of the medium pressure, and when the medium pressure acts on the second seal ring 304, due to the design of the trapezoidal cross section, the large end of the second seal ring 304 is tightly attached to the corresponding part of the seal ring installation groove and the valve body 1 by the medium pressure, so that the sealing effect is enhanced. The structure can automatically adjust the sealing degree according to the pressure of the medium, can keep good sealing performance under the high-pressure working condition, effectively prevents the medium from leaking, and improves the adaptability and the reliability of the valve under different pressure conditions. The first sealing ring 101 matched with the valve plate 3 is arranged on the inner wall of the valve body 1, when the valve plate 3 is in a closed state, the first sealing ring 101 can be tightly attached to the valve plate 3 to form a reliable sealing barrier, so that leakage of a medium from a gap between the valve plate 3 and the valve body 1 is effectively prevented, the overall sealing performance of the valve is greatly enhanced, the valve is ensured to reliably cut off medium flow under various working conditions, and the use scene with high sealing requirements is met.
Working principle:
An operator can switch between an automatic control mode and a manual control mode through the clutch according to actual requirements. If automatic control is selected, the electric actuator 2, the pneumatic actuator 2 or the hydraulic actuator 2 receives an external control signal to drive the internal rotating shaft 301 to rotate, and if manual control is selected, the hand wheel 201 is rotated, and the hand wheel 201 drives the related structure in the actuator 2 to further rotate the rotating shaft 301.
Rotation of the rotary shaft 301 drives the valve plate 3 to rotate in the valve body 1. Because the valve plate 3 is in an eccentric truncated cone shape, and the bus of the sealing surface and the center line of the rotating shaft 301 form a three-eccentric structure (the center line of the rotating shaft 301 and the center line of the sealing surface of the valve plate 3 are radially eccentric, the center line of the rotating shaft 301 and the center line of the flow channel of the valve body 1 are axially eccentric, and the tapered bus of the sealing surface of the valve plate 3 and the center line of the rotating shaft 301 are angularly eccentric), the unique three-eccentric structure enables the valve plate 3 to realize friction-free rotation between the sealing surfaces in the opening and closing processes. When the valve plate 3 is rotated to the open position, the medium can circulate through the flow channel of the valve body 1, and when the valve plate 3 is rotated to the closed position, the sealing structure between the valve plate 3 and the valve body 1 starts to function.
The first sealing ring 101 matched with the valve plate 3 is arranged on the inner wall of the valve body 1, and when the valve plate 3 is closed in place, the first sealing ring 101 is tightly attached to the valve plate 3 to prevent medium from leaking from a gap between the valve plate 3 and the valve body 1.
One end of the valve plate 3, which is away from the fixed seat 302, is provided with a pressing plate 303 through a bolt, a sealing ring installation groove is formed between the pressing plate 303 and the valve plate 3, and a second sealing ring 304 is clamped and fixed in the sealing ring installation groove. The second seal ring 304 has a trapezoidal cross-sectional shape, and a large end is disposed toward the medium pressure direction. When the medium pressure acts on the second sealing ring 304, the pressure can enable the large end of the second sealing ring 304 to be tightly attached to the corresponding part of the sealing ring mounting groove and the valve body 1, so that the sealing effect is enhanced, and the medium is prevented from leaking from the valve plate 3.
Two symmetrically distributed fixing seats 302 are arranged on the back surface of the valve plate 3, and the function of enhancing the structural stability of the valve plate 3 is achieved. The surface of the pressing plate 303 is provided with a plurality of threaded holes, the corresponding position on the valve plate 3 is provided with a mounting hole, a bolt passes through the mounting hole to be in threaded connection with the threaded hole, the pressing plate 303 is firmly mounted on the valve plate 3, the second sealing ring 304 is ensured to be stably fixed between the valve plate 3 and the pressing plate 303, and good sealing performance is maintained.
While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. Valve plate seal structure of three eccentric butterfly valve, characterized by, include:
the valve comprises a valve body (1), wherein an actuator (2) is arranged at the top end of the valve body (1);
A hand wheel (201) is arranged on the actuator (2);
A valve plate (3) is rotatably arranged on the valve body (1), and a fixed seat (302) is arranged on the back surface of the valve plate (3);
Two fixing seats (302) are arranged in total, and the two fixing seats (302) are symmetrically distributed on the valve plate (3);
A rotating shaft (301) is arranged in the actuator (2), the valve plate (3) is in transmission connection with the actuator (2) through the rotating shaft (301), and the valve plate (3) is rotatably arranged in the valve body (1) through the rotating shaft (301);
One end of the valve plate (3) deviating from the fixed seat (302) is provided with a pressing plate (303) through a bolt, and a second sealing ring (304) is clamped and fixed between the pressing plate (303) and the valve plate (3);
The valve plate (3) is in an eccentric truncated cone shape, and the pressing plate (303) and the second sealing ring (304) are matched with the valve plate (3) in shape.
2. The valve plate sealing structure of the triple offset butterfly valve of claim 1 is characterized in that a first sealing ring (101) matched with the valve plate (3) is arranged on the inner wall of the valve body (1).
3. The valve plate sealing structure of the triple offset butterfly valve of claim 1, wherein a plurality of threaded holes are formed in the surface of the pressing plate (303), mounting holes are formed in positions, corresponding to the threaded holes, of the valve plate (3), and the bolts penetrate through the mounting holes and are in threaded connection with the threaded holes.
4. The valve plate sealing structure of the triple offset butterfly valve of claim 1, wherein the actuator (2) is any one of an electric actuator, a pneumatic actuator or a hydraulic actuator, and a clutch is arranged between the hand wheel (201) and the actuator (2) for switching between an automatic control mode and a manual control mode.
5. The valve plate sealing structure of the triple offset butterfly valve is characterized in that a sealing surface of the valve plate (3) is of an eccentric truncated cone structure, a generatrix of the valve plate is in a triple offset structure with a central line of a rotating shaft (301), the triple offset structure comprises radial eccentricity of the central line of the rotating shaft with the center of the sealing surface of the valve plate, axial eccentricity of the central line of the rotating shaft with the central line of a flow passage of a valve body, and angle eccentricity of a conical generatrix of the sealing surface of the valve plate with the central line of the rotating shaft.
6. The valve plate sealing structure of the triple offset butterfly valve of claim 1, wherein a sealing ring mounting groove is formed between the pressing plate (303) and the valve plate (3), the cross section of the second sealing ring (304) is trapezoid, and the large end of the second sealing ring is arranged towards the pressure direction of a medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202521540931.0U CN223294268U (en) | 2025-07-23 | 2025-07-23 | A valve plate sealing structure for a triple eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202521540931.0U CN223294268U (en) | 2025-07-23 | 2025-07-23 | A valve plate sealing structure for a triple eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223294268U true CN223294268U (en) | 2025-09-02 |
Family
ID=96876090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202521540931.0U Active CN223294268U (en) | 2025-07-23 | 2025-07-23 | A valve plate sealing structure for a triple eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223294268U (en) |
-
2025
- 2025-07-23 CN CN202521540931.0U patent/CN223294268U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2747086C1 (en) | Device for quick switch of plug | |
| CN114635973B (en) | Main steam high-temperature high-pressure replaceable valve seat stop valve | |
| CN111795171B (en) | Long service life ball valve | |
| CN107883020B (en) | Three-way half ball valve for on-line pressurized overhaul based on normal operation of pipeline and overhaul method | |
| CN116677793A (en) | A New Bidirectional Seal Lifting Stem Ball Valve | |
| CN108506527A (en) | One kind is two-way to use machinery valve | |
| CN223294268U (en) | A valve plate sealing structure for a triple eccentric butterfly valve | |
| CN104896129A (en) | Parallel type double-gate gate valve | |
| CN207161754U (en) | Double-sealing eccentric ball valve | |
| CN201215185Y (en) | Converter angle valve | |
| CN219452948U (en) | Eccentric straight-through double-hemisphere valve | |
| CN107477192A (en) | Pneumatic butterfly valve device | |
| CN216343989U (en) | Y-shaped stop valve | |
| CN218031443U (en) | Double-butterfly-plate triple-eccentric all-metal hard seal butterfly valve | |
| CN116085486A (en) | Be used for liquid-solid two-phase flow to carry erosion-resistant flat gate valve | |
| CN203488744U (en) | All-metal hard seal quickly-closed butterfly valve resistant to high temperature, high pressure and washout | |
| CN109899533B (en) | Energy-saving rubber sealing butterfly valve | |
| CN107676504A (en) | A kind of triple valve | |
| CN208058030U (en) | One kind is two-way to use machinery valve | |
| CN221838937U (en) | Large diameter top entry quick release ball valve | |
| CN223662595U (en) | Large-caliber low-pressure all-welded flange butterfly valve | |
| CN218935306U (en) | Double-seal hydraulic control butterfly valve | |
| CN219796267U (en) | Combined butterfly valve structure | |
| CN223725525U (en) | Quick-response one-way valve | |
| CN223203736U (en) | A friction part easily replaceable valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |