CN110925441A - Ash cleaning valve - Google Patents
Ash cleaning valve Download PDFInfo
- Publication number
- CN110925441A CN110925441A CN201911164492.7A CN201911164492A CN110925441A CN 110925441 A CN110925441 A CN 110925441A CN 201911164492 A CN201911164492 A CN 201911164492A CN 110925441 A CN110925441 A CN 110925441A
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- China
- Prior art keywords
- valve body
- connecting rod
- rotating shaft
- valve
- ash
- 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.)
- Pending
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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
- 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
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
- F16K1/2021—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member with a plurality of 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
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
- F16K1/2028—Details of bearings for the axis of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0227—Check valves or pivoted valves with the valve members swinging around an axis located at the edge of or outside the valve member
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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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
An ash valve comprising: the valve body is used for sealing the discharge outlet, the valve body is arranged below the discharge outlet, and the valve body connecting rod is arranged on the valve body and is connected with the top of the valve body; the rotating shaft connecting rod is movably connected with the valve body connecting rod; the rotating shaft is connected with the rotating shaft connecting rod; the relative position between the action connecting rod and the rotating shaft connecting rod is fixed, and the action connecting rod and the rotating shaft connecting rod can rotate around the axis of the rotating shaft; and the valve body driving unit can drive the action connecting rod to rotate between the positions of lifting and closing the discharge port and moving downwards to open the discharge port of the valve body. The movement control mechanism of the valve body is arranged above the valve body, so that the accumulation structure of the materials above the valve body can be damaged while the valve body is driven to move, the function of loosening the materials is achieved, the materials are prevented from blocking a discharge port, and smooth circulation of the materials is ensured.
Description
Technical Field
The invention belongs to the technical field of sealing, and particularly relates to an ash removal valve used in sintering machines and other equipment in the metallurgical industry.
Background
The ash valve is used for discharging ash of the dust removing and air supplying equipment, and powdery materials and granular materials in the equipment are discharged by opening the ash valve. Fig. 1 and 2 are schematic structural views of a prior art double-sealing type ash removal valve, and as shown in fig. 1 and 2, the ash removal valve comprises an upper valve cover 100 and a lower valve cover 101, and the upper valve cover 100 and the lower valve cover 101 are both of a plate type structure. The upper valve cover 100 is used for sealing the upper discharge port a in the pipe, and the lower valve cover 101 is used for sealing the lower discharge port b in the pipe. The upper valve cap 100 is connected to the upper valve cap shaft 102, and the upper valve cap shaft 102 rotates to drive the upper valve cap 100 to rotate, thereby opening or closing the upper discharge opening a. Similarly, the lower valve cover 101 is connected to the lower valve cover rotating shaft 103, and the lower valve cover 101 is driven to rotate by the rotation of the lower valve cover rotating shaft 103, so as to open or close the lower discharge hole b. Both ends of the upper valve cover rotating shaft 102 and the lower valve cover rotating shaft 103 extend out of the pipeline, both ends of the upper valve cover rotating shaft and the lower valve cover rotating shaft are respectively connected with the control connecting rod 104 and the counterweight connecting rod 105, and the counterweight connecting rod 105 is provided with a counterweight block 106. Under the condition of no external force, the upper valve cover rotating shaft 102 is positioned at the position where the upper valve cover 101 seals the upper discharge port a under the action of the balancing weight 106, and similarly, under the condition of no external force, the lower valve cover rotating shaft 103 is positioned at the position where the lower valve cover 102 seals the lower discharge port b under the action of the balancing weight 106. The opening of the valve cover is controlled by a motor 107, a cam 108 is arranged on an output shaft of the motor 107, when the motor 107 works, the output shaft drives the cam 108 to rotate, the cam 108 can be sequentially contacted with a control connecting rod 104 connected with an upper valve cover rotating shaft 102 and a control connecting rod 104 connected with a lower valve cover rotating shaft 103 in the process of rotating for a circle, in the process of contacting the cam 108 and the control connecting rod 104, the cam 108 can stir the control connecting rod 104 to enable the control connecting rod 104 to rotate around the axis of the valve cover rotating shaft connected with the control connecting rod 104, and the control connecting rod 104 can drive the valve cover rotating shaft connected with the control connecting rod to rotate when rotating, and further drive the valve cover to rotate, so that the valve cover. Because current valve gap adopts plate-type structure, the valve gap is opened downwards, and the in-process that the valve gap was opened can not forcefully act on the material. And the material can be piled up after falling on the valve gap, and along with constantly piling up of material, the material can be pressed more closely knit to even can take place the valve gap and open, because the unable condition that can not drop of material scatter, lead to the material to block up in range mouth department.
Disclosure of Invention
The invention aims to provide an ash removal valve which can destroy a material accumulation structure and prevent material blockage.
In order to achieve the purpose, the invention adopts the following technical solutions:
an ash valve comprising: the valve body is used for sealing the discharge outlet, the valve body is arranged below the discharge outlet, and the valve body connecting rod is arranged on the valve body and is connected with the top of the valve body; the rotating shaft connecting rod is movably connected with the valve body connecting rod; the rotating shaft is connected with the rotating shaft connecting rod; the relative position between the action connecting rod and the rotating shaft connecting rod is fixed, and the action connecting rod and the rotating shaft connecting rod can rotate around the axis of the rotating shaft; and the valve body driving unit can drive the action connecting rod to rotate between the positions of lifting and closing the discharge port and moving downwards to open the discharge port of the valve body.
Further, the valve body is in a spherical crown shape, a circular truncated cone shape or a hemispherical shape.
Further, the valve body driving unit is a hydraulic cylinder, and a piston rod of the hydraulic rod is connected with the action connecting rod.
Furthermore, a sealing gasket is arranged on the peripheral wall of the discharge opening.
Further, the valve body connecting rod extends upwards along the vertical direction.
Furthermore, the valve body connecting rod is connected with the rotating shaft connecting rod through a pin shaft, and the valve body connecting rod and the rotating shaft connecting rod can rotate relatively around the pin shaft.
Furthermore, the vertical section of the discharge opening is trapezoidal.
Furthermore, the valve body comprises an upper valve body used for closing an upper discharge port in the pipeline and a lower valve body used for closing a lower discharge port in the pipeline, a transition storage bin is formed between the upper discharge port and the lower discharge port, the action of the valve body is controlled by respective valve body driving units, and only one discharge port is in an open state at the same time.
Furthermore, an installation cabin is arranged on the side wall of the pipeline, the rotating shaft is arranged in the installation cabin, at least one end part of the rotating shaft is exposed out of the installation cabin, and the action connecting rod is connected with the end part of the rotating shaft, which is exposed out of the installation cabin.
Furthermore, the transitional storage bin is provided with a material receiving section, the material receiving section is positioned below the upper discharge port, and the inner diameter of the material receiving section is larger than that of the pipeline
According to the technical scheme, the motion control mechanism of the valve body, which comprises the valve body connecting rod, the rotating shaft connecting rod and the like, is arranged above the valve body, and when the valve body connecting rod and the rotating shaft connecting rod drive the valve body to move, the valve body connecting rod and the rotating shaft connecting rod are positioned in the material layer above the valve body, so that a material accumulation structure above the valve body can be damaged, the material is scattered and loosened, the material can be smoothly discharged from the discharge port, the material is prevented from being blocked at the discharge port, and the flowability of the material is improved. The ash removal valve can be used for a double-sealing structure for alternately sealing two discharge ports, and can also be used for a single-sealing structure for sealing a single discharge port.
Drawings
Fig. 1 is a schematic structural view of a conventional ash removal valve.
Fig. 2 is a schematic view of the internal structure of a conventional ash removal valve.
Fig. 3 is a schematic structural diagram of an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of another angle according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of an internal structure according to an embodiment of the present invention.
Fig. 6 is a schematic view of the connection between the valve cover control link and the rotating shaft according to the embodiment of the invention.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Detailed Description
Referring to fig. 3, 4, 5 and 6, the ash valve of the present embodiment is an ash valve in a double-sealing manner, and thus has two sets of sealing valves for sealing the upper discharge opening a and the lower discharge opening b in the pipe 10, respectively, and the two sets of sealing valves have the same structure and each include a valve body 1, a valve body connecting rod 2, a rotating shaft connecting rod 3, a rotating shaft 4, an actuating connecting rod 5 and a valve body driving unit 6. In order to enhance the sealing effect, sealing gaskets may be provided on the circumferential walls of the upper and lower discharge ports a and b.
The vertical cross-sectional shape of the discharge gate of this embodiment is trapezoidal, and valve body 1 is spherical crown shape, and the size of valve body 1 and the size of last discharge gate a that seal last discharge gate a suit, and the size of valve body 1 and the size of lower discharge gate b that seal lower discharge gate b suit. Valve body connecting rod 2 sets up in the top of valve body 1, and valve body connecting rod 2 links to each other and upwards extends along vertical direction in valve body 1, and valve body connecting rod 2 links to each other through round pin axle and pivot connecting rod 3, can take place relative rotation around the round pin axle between valve body connecting rod 2 and the pivot connecting rod 3, is swing joint between valve body connecting rod 2 and the pivot connecting rod 3 promptly. The other end of the rotating shaft connecting rod 3 is connected with the rotating shaft 4, the rotating shaft connecting rod 3 is fixedly connected with the rotating shaft 4, and relative motion cannot occur between the rotating shaft connecting rod 3 and the rotating shaft 4, so that the rotating shaft connecting rod 3 can be driven to rotate together when the rotating shaft 4 rotates. The rotating shaft 4 is arranged in the installation bin 10a of the pipeline 10, one end of the rotating shaft 4 extends out of the installation bin 10, the end part of the rotating shaft 4, which is exposed out of the installation bin 10a, is connected with the action connecting rod 5, the action connecting rod 5 and the rotating shaft 4 are fixedly connected, so that the action connecting rod 5 and the rotating shaft connecting rod 3 can keep a fixed relative position, the projection of the axis of the action connecting rod 5 on a plane perpendicular to the rotating shaft 4 is intersected with the projection of the axis of the rotating shaft connecting rod 3 on the plane perpendicular to the rotating shaft 4, and an included angle between the projections can be determined according to the size and the movement direction of the valve body and the arrangement position of the valve body driving unit, in the embodiment, the included angle between the projection of the axis of the action connecting rod 5 on the plane perpendicular to the rotating shaft 4 and the projection of the axis of the rotating shaft connecting rod. The valve body driving unit 6 of this embodiment employs a hydraulic cylinder, and a piston rod of a hydraulic rod is connected to the action link 5, and when the hydraulic rod is actuated, the action link 5 is pushed to rotate the rotary shaft 4.
The working process of the present invention is further explained below:
as shown in fig. 5, an upper discharge opening a and a lower discharge opening b are provided in the pipe 10, a transition storage bin is formed between the upper discharge opening a and the lower discharge opening b, valve bodies 1 are respectively provided below the upper discharge opening a and below the lower discharge opening b, and one valve body 1 is used for sealing one discharge opening. The operation of the valve body 1 is controlled by the respective valve body drive units 6. Preferably, the transition storage bin is internally provided with a material receiving section which is positioned below the upper discharge port a, and the inner diameter of the material receiving section is larger than that of the pipeline.
Under the normal state, the upper discharge port a and the lower discharge port b are both in a closed state. The material discharged by the dust removing system is slowly accumulated above the upper discharging port a, when the material is accumulated to a preset threshold value, a valve body driving unit 6 of a (upper) valve body 1 for controlling and sealing the upper discharging port a starts to act, the valve body driving unit 6 pushes an action connecting rod 5 to enable the action connecting rod 5 to rotate around the axis of a rotating shaft 4, because the action connecting rod 5 is fixedly connected with the rotating shaft 4, the rotating shaft 4 is driven to rotate together when the action connecting rod 5 rotates, a rotating shaft connecting rod 3 fixedly connected with the rotating shaft 4 also rotates downwards together, in the process that the rotating shaft connecting rod 3 rotates downwards, the valve body connecting rod 2 also moves downwards together, and because the valve body 1 has a certain weight, under the action of gravity, the valve body connecting rod 2 and the rotating shaft connecting rod 3 rotate relatively around a pin shaft, the valve body connecting rod 2 moves downwards deviating from the axis of the upper discharging port a, and the valve body connecting rod 2 keeps a vertical state all the time in the, the valve body 1 also moves downwards along with the valve body connecting rod 2 to leave the upper discharge port a, so that the upper discharge port a is opened, and at the moment, the material can fall into the transitional storage bin through the upper discharge port a; because the valve body connecting rod 2 and the rotating shaft connecting rod 3 are positioned in the material pile layer above the upper discharge port a, in the process that the valve body 1 moves downwards, the valve body connecting rod 2 and the rotating shaft connecting rod 3 positioned above the valve body connecting rod also have a motion process, and in the process, the valve body connecting rod 2 and the rotating shaft connecting rod 3 can play a role of loosening materials piled above the valve body 1 (the upper discharge port a), so that the piling structure of the materials can be damaged, the materials are scattered, and the materials can smoothly fall into the transitional storage bin; in the process, the lower discharge port b is always closed by the valve body 1 positioned below the lower discharge port b.
After the upper discharge port a is opened, the material falls into the transition storage bin and is accumulated above the lower discharge port b, and when the material is accumulated to a preset threshold value, a valve body driving unit 6 of a (lower) valve body 1 for controlling the lower discharge port b to be closed starts to act, the valve body 1 is controlled to open the lower discharge port b, and the action process is the same as the above; meanwhile, a valve body driving unit 6 of the valve body 1 for controlling the closing of the upper discharge port a controls the valve body 1 to close the upper discharge port a, the closing action process is opposite to the opening action process, the valve body driving unit 6 reversely pulls back an action connecting rod 5, the action connecting rod 5 drives a rotating shaft 4 and a rotating shaft connecting rod 3 fixedly connected with the rotating shaft 4 to reversely move, at the moment, the rotating shaft connecting rod 3 rotates upwards, the rotating shaft connecting rod 3 lifts the valve body 1 upwards through the valve body connecting rod 2 in the process, and the valve body 1 returns to the position contacted with the upper discharge port a again, so that the upper discharge port a is closed; the closing process of the lower discharge port b is similar. In the discharging process, only one discharging opening is in an open state at the same time, so that the tightness of the system is ensured, the air quantity or heat is prevented from leaking outwards, and the energy-saving effect is achieved.
Of course, the technical concept of the present invention is not limited to the above embodiments, and many different specific schemes can be obtained according to the concept of the present invention, for example, the valve body may be in a shape of a truncated cone, a hemisphere, a cone, or the like, besides a spherical crown, or in a plate structure adapted to the shape of the inlet (outlet) port; the valve body driving unit can be replaced by a hydraulic cylinder, a motor and screw rod transmission structure, an electric push rod or an air cylinder and the like; the valve body connecting rod can be connected with the rotating shaft connecting rod through a pin shaft and can also be connected with the rotating shaft connecting rod through connecting pieces such as a universal joint, a chain or a steel rope and the like; further, in the foregoing embodiment, the spindle connecting rod, the spindle, and the action link are 3 independent parts, but in the case where the installation space is appropriate, the spindle connecting rod, the spindle, and the action link may be an integrated structure; such modifications and equivalents are intended to be included within the scope of the present invention.
Claims (10)
1. An ash valve comprising: a valve body for sealing the bin outlet, the valve body set up in the bin outlet below, its characterized in that still includes:
the valve body connecting rod is arranged on the valve body and connected with the top of the valve body;
the rotating shaft connecting rod is movably connected with the valve body connecting rod;
the rotating shaft is connected with the rotating shaft connecting rod;
the relative position between the action connecting rod and the rotating shaft connecting rod is fixed, and the action connecting rod and the rotating shaft connecting rod can rotate around the axis of the rotating shaft;
and a valve body driving unit for driving the action connecting rod to rotate.
2. An ash valve according to claim 1, wherein: the valve body is in a spherical crown shape, a round table shape or a semispherical shape.
3. An ash valve according to claim 1, wherein: the valve body driving unit is a hydraulic cylinder, a piston rod of the hydraulic rod is connected with the action connecting rod, and the valve body driving unit can enable the action connecting rod to rotate between the positions of lifting and closing the discharge opening and moving downwards to open the discharge opening of the valve body.
4. An ash valve according to claim 1 or 2 or 3, characterized in that: and a sealing gasket is arranged on the peripheral wall of the discharge opening.
5. An ash valve according to claim 1, wherein: the valve body connecting rod extends upwards along the vertical direction.
6. An ash valve according to claim 1, wherein: the valve body connecting rod is connected with the rotating shaft connecting rod through a pin shaft, and the valve body connecting rod and the rotating shaft connecting rod can rotate relatively around the pin shaft.
7. An ash valve according to claim 1 or 2, characterized in that: the vertical section of the discharge opening is trapezoidal.
8. An ash valve according to claim 1 or 2 or 3 or 5 or 6, characterized in that: the valve body includes the last valve body that is arranged in the last bin outlet of closed pipeline and is arranged in the lower valve body of closed pipeline lower discharge gate, form a transition storage storehouse between last bin outlet and the lower discharge gate, the action of valve body is controlled by respective valve body drive unit, and only a bin outlet is in the open mode in the same time.
9. An ash valve according to claim 7, wherein: the pipeline is characterized in that an installation bin is arranged on the side wall of the pipeline, the rotating shaft is arranged in the installation bin, at least one end part of the rotating shaft is exposed out of the installation bin, and the action connecting rod is connected with the end part of the rotating shaft, which is exposed out of the installation bin.
10. An ash valve according to claim 7, wherein: the transition storage bin is provided with a material receiving section, the material receiving section is located below the upper discharge port, and the inner diameter of the material receiving section is larger than that of the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911164492.7A CN110925441A (en) | 2019-11-25 | 2019-11-25 | Ash cleaning valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911164492.7A CN110925441A (en) | 2019-11-25 | 2019-11-25 | Ash cleaning valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110925441A true CN110925441A (en) | 2020-03-27 |
Family
ID=69851749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911164492.7A Pending CN110925441A (en) | 2019-11-25 | 2019-11-25 | Ash cleaning valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110925441A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217989A (en) * | 2022-08-30 | 2022-10-21 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Fluid-driven petal type combined valve core type quick-opening valve |
-
2019
- 2019-11-25 CN CN201911164492.7A patent/CN110925441A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217989A (en) * | 2022-08-30 | 2022-10-21 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Fluid-driven petal type combined valve core type quick-opening valve |
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