CN110319233B - Shock-resistant vacuum interface valve - Google Patents
Shock-resistant vacuum interface valve Download PDFInfo
- Publication number
- CN110319233B CN110319233B CN201910552458.0A CN201910552458A CN110319233B CN 110319233 B CN110319233 B CN 110319233B CN 201910552458 A CN201910552458 A CN 201910552458A CN 110319233 B CN110319233 B CN 110319233B
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- driving
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- valve
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Links
- 230000035939 shock Effects 0.000 title claims description 5
- 238000013016 damping Methods 0.000 claims abstract description 98
- 239000007788 liquid Substances 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
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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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
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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
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
- F16K51/02—Other details not peculiar to particular types of valves or cut-off apparatus specially adapted for high-vacuum installations
-
- 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
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
- F16K7/14—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat
- F16K7/17—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat the diaphragm being actuated by fluid pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses an impact-resistant vacuum interface valve, which comprises a valve body and a piston diaphragm positioned in the valve body, wherein a first inlet and a first outlet are arranged on the valve body, and the impact-resistant vacuum interface valve is characterized in that: the piston diaphragm is formed with a damping cavity; the vacuum interface valve also comprises a damping system and a vacuum driving system; the damping system comprises damping liquid, a damping liquid chamber, a first one-way valve and a second one-way valve; a driving diaphragm is arranged in the vacuum driving system and is fixedly connected with the piston diaphragm through a connecting rod; the damping cavity is filled with the damping liquid. The piston diaphragm in the vacuum interface valve provided by the invention has the characteristic of impact resistance, and can prolong the service life of the piston diaphragm, thereby improving the reliability of the interface valve.
Description
[ Field of technology ]
The invention relates to the technical field of valves, in particular to an impact-resistant interface valve.
[ Background Art ]
The conventional valve core and the valve body have no ideal effects in terms of corresponding speed, sealing performance, reliability and the like, and under the background, a vacuum interface valve has been developed, so that the valve has the advantages of high response speed, high flux and high sealing performance.
However, in the vacuum interface valve in the prior art, the switching speed of the vacuum in the vacuum chamber and the standard atmospheric pressure is high, so that the piston diaphragm in the interface valve is subjected to strong impact when being opened and closed, fatigue damage of the piston diaphragm is extremely easy to cause, and the reliability of the interface valve is reduced.
Therefore, there is a need to develop an impact resistant vacuum interface valve.
[ Invention ]
The invention aims to solve the problems in the prior art, and provides a vacuum interface valve, wherein a piston diaphragm in the vacuum interface valve has the characteristic of impact resistance, so that the service life of the piston diaphragm can be prolonged, and the reliability of the interface valve is further improved.
In order to achieve the above object, the present invention provides an impact-resistant vacuum interface valve, which comprises a valve body and a piston diaphragm located in the valve body, wherein a first outlet and a first inlet are provided on the valve body, and the impact-resistant vacuum interface valve is characterized in that: the opening at the upper end of the piston diaphragm is connected with the top wall of the valve body in a sealing way, so that a closed damping cavity is formed; the vacuum interface valve further comprises a damping system and a vacuum driving system; the damping system comprises damping liquid, a damping liquid chamber for storing the damping liquid, and a first one-way valve and a second one-way valve for controlling the flow direction of the damping liquid; a driving diaphragm is arranged in the vacuum driving system and is fixedly connected with the piston diaphragm through a connecting rod; the damping cavity is filled with the damping liquid, when the piston diaphragm expands to cut off the first outlet and the first inlet, the damping liquid flows into the damping cavity from the damping liquid chamber through the first one-way valve, and when the piston diaphragm contracts to communicate the first outlet and the first inlet, the damping liquid flows back into the damping liquid chamber from the damping cavity through the second one-way valve.
Preferably, the piston diaphragm is annular, the bottom of the piston diaphragm is inwards concave to form a bottom inner cavity, the circumferential side wall of the piston diaphragm is inwards concave to form a C-shaped section, the outer diameters of the upper end and the lower end of the piston diaphragm are larger than the inner diameter of the outer wall of the middle part, the center of the bottom inner cavity is provided with an integrally formed cylindrical pipe wall, and the side wall of the bottom inner cavity is provided with a reinforcing rib.
Preferably, an annular pressing plate is arranged at the top of the bottom inner cavity of the piston diaphragm, the annular pressing plate is sleeved on the connecting rod, the top of the annular pressing plate abuts against a step on the connecting rod, and the bottom of the annular pressing plate abuts against the upper end wall surface of the bottom inner cavity; the lower end of the connecting rod penetrates through the wall of the cylindrical pipe, a locking nut is further arranged at the lower end of the connecting rod, and the axial freedom degrees of the annular pressing plate and the piston diaphragm are limited by the locking nut and the steps of the connecting rod.
Preferably, a flexible hose clamp is sleeved at the middle section of the circumferential side wall of the piston diaphragm, so that the circumferential side wall of the piston diaphragm is prevented from expanding due to lateral pressure of damping liquid.
Preferably, the damping liquid chamber is sealed and fixed at the top of the valve body, and the first one-way valve and the second one-way valve are both arranged on the top wall of the valve body; the inlet of the first one-way valve is positioned in the damping liquid chamber, and the outlet of the first one-way valve is communicated with the damping cavity; and the outlet of the second one-way valve is positioned in the damping liquid chamber, and the inlet of the second one-way valve is communicated with the damping cavity.
Preferably, the vacuum driving system further comprises a vacuum driving chamber, the driving diaphragm is positioned in the inner cavity of the vacuum driving chamber, the inner cavity of the vacuum driving chamber is isolated into a first driving cavity positioned at the upper part of the driving diaphragm and a second driving cavity positioned at the lower part of the driving diaphragm, and the first driving cavity and the second driving cavity are respectively connected with the vacuum generator through a first air pipe and a second air pipe; the lower part of the driving diaphragm is also provided with a return spring, the return spring is sleeved on the connecting rod, the upper end of the return spring is propped against the driving diaphragm, and the lower end of the return spring is propped against the bottom wall of the second driving cavity.
Preferably, a cavity opening is formed in the center of the top of the valve body, a plug cover is connected to the cavity opening in a sealing mode, the connecting rod penetrates through the plug cover, and a movable sealing ring is arranged between the connecting rod and the plug cover.
Preferably, the inner side surface of the bottom wall of the valve body is a spherical wall surface, the first inlet is positioned at the center of the bottom wall of the valve body, the first outlet is positioned on the cylindrical side wall of the valve body, and when the piston diaphragm expands and moves downwards to the bottom of the valve body, the piston diaphragm is tightly attached to the spherical wall surface at the bottom of the valve body.
The invention has the beneficial effects that: according to the invention, the damping system is arranged, and the damping liquid is filled in the piston diaphragm, so that the contraction and upward movement or the expansion and downward movement of the piston diaphragm are both subjected to the action of fluid damping, and the strong impact of the piston diaphragm caused by the vacuum action is prevented, so that the service life of the piston diaphragm can be prolonged, and the reliability of the vacuum diaphragm valve is improved.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
[ Description of the drawings ]
Fig. 1 is a cross-sectional view of the overall structure of the present invention.
In the figure: 1-valve body, 2-piston diaphragm, 3-damping system, 4-vacuum drive system, 5-plug cap, 6-connecting rod, 7-annular pressure plate, 8-damping chamber, 101-first outlet, 102-first inlet, 103-spherical wall, 201-circumferential side wall, 202-flexible hose clamp, 203-cylindrical wall, 204-stiffener, 205-bottom cavity, 301-damping liquid chamber, 302-first check valve, 303-second check valve, 401-drive diaphragm, 402-first drive chamber, 403-second drive chamber, 404-return spring, 405-first air tube, 406-second air tube.
[ Detailed description ] of the invention
Referring to fig. 1, the shock-resistant vacuum interface valve of the present invention comprises a valve body 1 and a piston diaphragm 2 positioned in the valve body, wherein a first outlet 101 and a first inlet 102 are arranged on the valve body, and the shock-resistant vacuum interface valve is characterized in that: the opening at the upper end of the piston diaphragm is in sealing connection with the top wall of the valve body, and a closed damping cavity 8 is formed; the vacuum interface valve further comprises a damping system 3 and a vacuum driving system 4; the damping system comprises damping liquid, a damping liquid chamber 301 for storing the damping liquid, a first check valve 302 and a second check valve 303 for controlling the flow direction of the damping liquid; a driving diaphragm 401 is arranged in the vacuum driving system, and the driving diaphragm is fixedly connected with the piston diaphragm through a connecting rod 6; the damping cavity is filled with the damping liquid, when the piston diaphragm expands to cut off the first outlet and the first inlet, the damping liquid flows into the damping cavity from the damping liquid chamber through the first one-way valve, and when the piston diaphragm contracts to communicate the first outlet and the first inlet, the damping liquid flows back to the damping liquid chamber from the damping cavity through the second one-way valve.
The piston diaphragm 2 is annular, the bottom of the piston diaphragm is upwards concave to form a bottom inner cavity 205, the circumferential side wall 201 of the piston diaphragm is inwards concave to form a C-shaped section, the outer diameters of the upper end and the lower end of the piston diaphragm are larger than the inner diameter of the outer wall at the middle part, the center of the bottom inner cavity is provided with a cylindrical pipe wall 203 integrally formed with the piston diaphragm, and the side wall of the bottom inner cavity is provided with a reinforcing rib 204. The function of the reinforcing ribs is to provide support for the bottom wall surface of the piston diaphragm, so that the bottom wall surface of the piston diaphragm can maintain certain structural strength when being subjected to the push-pull action of the connecting rod 6, and the whole piston diaphragm can rapidly respond to the action of the connecting rod.
An annular pressing plate 7 is arranged at the top of the bottom inner cavity of the piston diaphragm 2, the annular pressing plate is sleeved on the connecting rod 6, the top of the annular pressing plate is propped against a step on the connecting rod, and the bottom of the annular pressing plate is propped against the upper end wall surface of the bottom inner cavity 205; the lower end of the connecting rod passes through the cylindrical pipe wall 203, the lower end of the connecting rod is also provided with a locking nut, and the locking nut and the steps of the connecting rod limit the axial freedom degree of the annular pressing plate 7 and the piston diaphragm 2 together
The middle section of the circumferential side wall 201 of the piston diaphragm 2 is sleeved with a flexible hose clamp 202, so that the circumferential side wall of the piston diaphragm is prevented from expanding due to lateral pressure of damping fluid.
The damping fluid chamber 301 is fixed on the top of the valve body 1 in a sealing way, and the first check valve 302 and the second check valve 303 are arranged on the top wall of the valve body; the inlet of the first one-way valve is positioned in the damping liquid chamber, and the outlet of the first one-way valve is communicated with the damping cavity; and the outlet of the second one-way valve is positioned in the damping liquid chamber, and the inlet of the second one-way valve is communicated with the damping cavity.
The vacuum driving system 4 further comprises a vacuum driving chamber, the driving diaphragm 401 is positioned in the inner cavity of the vacuum driving chamber, the inner cavity of the vacuum driving chamber is isolated into a first driving cavity 402 positioned at the upper part of the driving diaphragm and a second driving cavity 403 positioned at the lower part of the driving diaphragm, and the first driving cavity and the second driving cavity are respectively connected with a vacuum generator through an air pipe 405; the lower part of the driving diaphragm is also provided with a return spring 404, the return spring is sleeved on the connecting rod 6, the upper end of the return spring is propped against the driving diaphragm, and the lower end is propped against the bottom wall of the second driving cavity.
The center of the top of the valve body 1 is provided with a cavity opening, a plug cover 5 is connected to the cavity opening in a sealing way, the connecting rod 6 penetrates through the plug cover, a movable sealing ring is arranged between the connecting rod and the plug cover, namely the connecting rod needs to do circumferential movement relative to the plug cover, and the movable sealing ring is used for ensuring that damping liquid in the damping cavity cannot flow out from the contact surface of the connecting rod and the plug cover in the process of up-down movement of the connecting rod.
The inner side surface of the bottom wall of the valve body 1 is a spherical wall surface 103, the first inlet is positioned at the center of the bottom wall of the valve body, the first outlet is positioned on the cylindrical side wall of the valve body, and when the piston diaphragm 2 is expanded and moved downwards to the bottom of the valve body by the downward thrust of the connecting rod, the piston diaphragm is tightly attached to the spherical wall surface 103 at the bottom of the valve body, so that the bottom of the piston diaphragm is provided with a conical bottom surface.
The top end of the connecting rod is fixedly connected with the driving diaphragm, and one fixing mode shown in fig. 1 is that a gasket is respectively arranged on the upper surface and the lower surface of the center point of the driving diaphragm 401, then a screw penetrates through the gasket and the center of the driving diaphragm, a threaded hole is formed in the top end face of the connecting rod, and the screw is screwed on the end part of the connecting rod.
The bottom end of the connecting rod is fixedly connected with the bottom of the piston diaphragm 2, and one fixing mode shown in fig. 1 is to make the lower end of the connecting rod pass through the cylindrical pipe wall 203 from top to bottom, and lock the bottom of the piston diaphragm 2 on the lower end of the connecting rod in a double-nut anti-loose mode.
The vacuum driving chamber shown in fig. 1 comprises an upper chamber body and a lower chamber body, a sealing ring is arranged between the upper chamber body and the lower chamber body, and the peripheral outer edge of the driving diaphragm is also positioned on the joint surface between the upper chamber body and the lower chamber body, and the upper chamber body and the lower chamber body are fixedly connected through screws.
As shown in fig. 1, the vacuum driving system 4 is fixedly connected to the valve body 1 through a bracket.
As shown in fig. 1, the channel between the first check valve 302 and the damping cavity 8 is composed of a deep hole on the top wall surface of the valve body 1, a ring groove on the side wall of the plug cover 5 and the deep hole; and the passage between the second non-return valve 303 and the damping chamber 8 is constituted by a deep hole in the top of the valve body 1.
The damping fluid may be a fluid medium such as water or hydraulic oil.
The working process of the invention comprises the following steps:
1) And (3) a closing process. A first air pipe 405 communicated with the first driving cavity 402 is communicated with standard atmospheric pressure, and a second air pipe 406 communicated with the second driving cavity 403 is communicated with vacuum negative pressure, and as the atmospheric pressure in the first driving cavity 402 is larger than the atmospheric pressure in the second driving cavity 403 and the peripheral outer edge of the driving diaphragm is fixed on the side wall of the vacuum driving chamber in a sealing way, the outer edge of the driving diaphragm is fixed, and the center of the driving diaphragm moves downwards against the elastic resistance of the reset spring 404; the top end of the connecting rod 6 is fixedly connected with the center of the driving diaphragm, so that the connecting rod is pushed by the driving diaphragm to move downwards, and the bottom end of the connecting rod 6 is fixedly connected with the bottom of the piston diaphragm 2, so that the connecting rod 6 pushes the bottom of the piston diaphragm 2 to move downwards until the bottom wall of the piston diaphragm 2 is tightly attached to the spherical wall surface 103 at the bottom of the valve body 1 to achieve stress balance; before the bottom of the piston diaphragm 2 moves downwards, the damping cavity 8 is filled with damping liquid, when the volume of the damping cavity 8 increases in the process of moving downwards the bottom of the piston diaphragm 2, negative pressure is formed in the damping cavity 8, the first one-way valve 302 is forced to be conducted due to pressure difference, the damping liquid in the damping liquid chamber 301 flows into the damping cavity 8 through the first one-way valve 302, and the flow resistance of the damping liquid flowing into the damping cavity 8 from the damping liquid chamber 301 is the buffering damping force of the piston diaphragm 2 when the first outlet 101 and the first inlet 102 of the valve body 1 are cut off and closed.
2) And (5) starting a process. In contrast to the closing process, the first air tube 405, which is in communication with the first driving chamber 402, is connected to vacuum negative pressure, while the second air tube 406, which is in communication with the second driving chamber 403, is connected to standard atmospheric pressure, the outer edge of the driving diaphragm 401 is fixed, and the center thereof moves upward under the elastic force of the return spring 404 and the pressure difference in the vacuum driving chamber; the connecting rod 6 drives the bottom of the piston diaphragm 2 to move upwards, the curvature of the cylindrical side wall 201 is increased, and the volume in the damping cavity 8 is reduced, so that damping liquid in the damping cavity 8 flows back into the damping liquid chamber 301 against the second one-way valve 303, and the flow resistance of the damping liquid in the process of flowing back into the damping liquid chamber 301 from the damping cavity 8 is the buffering damping force of the piston diaphragm 2 when the first outlet 101 and the first inlet 102 of the valve body 1 are conducted.
3) And (5) a decompression process. When the vacuum generator fails, the first air pipe 405 and the second air pipe 406 are both connected with atmospheric pressure, at this time, the pressure of the first driving cavity 402 and the pressure of the second driving cavity 403 are the same, no matter the driving diaphragm 401 is located at the top or the bottom of the vacuum driving chamber, the driving diaphragm 401 moves to the middle position of the vacuum driving chamber under the action of the reset spring 404, when the driving diaphragm 401 moves to the middle position of the vacuum driving chamber, the driving diaphragm is approximately in a natural state, and the bottom of the piston diaphragm 2 moves to the position with the same height as the axis of the first outlet 101, at this time, the first outlet 101 and the first inlet 102 are in a semi-open state, and the conduction of the valve body 1 is not affected when the vacuum generator fails.
According to the invention, the damping system is arranged, and the damping liquid is filled in the piston diaphragm, so that the contraction and upward movement or the expansion and downward movement of the piston diaphragm are both subjected to the action of fluid damping, and the strong impact of the piston diaphragm caused by the vacuum action is prevented, so that the service life of the piston diaphragm can be prolonged, and the reliability of the vacuum diaphragm valve is improved.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (5)
1. The utility model provides a vacuum interface valve that shocks resistance, includes the valve body and is located the piston diaphragm in the valve body, be provided with first export and first entry on the valve body, its characterized in that: the opening at the upper end of the piston diaphragm is connected with the top wall of the valve body in a sealing way, so that a closed damping cavity is formed; the vacuum interface valve further comprises a damping system and a vacuum driving system; the damping system comprises damping liquid, a damping liquid chamber for storing the damping liquid, and a first one-way valve and a second one-way valve for controlling the flow direction of the damping liquid; a driving diaphragm is arranged in the vacuum driving system and is fixedly connected with the piston diaphragm through a connecting rod; when the piston diaphragm is contracted by communicating the first outlet with the first inlet, the damping liquid flows back to the damping liquid chamber from the damping chamber through the second one-way valve, the piston diaphragm is annular, the bottom of the piston diaphragm is inwards concave to form a bottom inner cavity, the circumferential side wall of the piston diaphragm is inwards concave to form a C-shaped section, the outer diameter of the upper end and the lower end of the piston diaphragm is larger than the inner diameter of the outer wall at the middle, the center of the bottom inner cavity is provided with an integrally formed cylindrical pipe wall, the side wall of the bottom inner cavity is provided with a reinforcing rib, the top of the bottom inner cavity of the piston diaphragm is provided with an annular pressing plate, the top of the annular pressing plate is sleeved on the connecting rod, the bottom of the annular pressing plate is propped against the step on the connecting rod, and the bottom of the piston diaphragm is propped against the upper end wall surface of the bottom inner cavity; the lower end of the connecting rod penetrates through the wall of the cylinder tube, the lower end of the connecting rod is further provided with a lock nut, the axial freedom degrees of the annular pressing plate and the piston diaphragm are limited by the lock nut and steps of the connecting rod, the vacuum driving system further comprises a vacuum driving chamber, the driving diaphragm is positioned in the inner cavity of the vacuum driving chamber, the inner cavity of the vacuum driving chamber is isolated into a first driving cavity positioned at the upper part of the driving diaphragm and a second driving cavity positioned at the lower part of the driving diaphragm, and the first driving cavity and the second driving cavity are connected with the vacuum generator through a first air pipe and a second air pipe respectively; the lower part of the driving diaphragm is also provided with a return spring, the return spring is sleeved on the connecting rod, the upper end of the return spring is propped against the driving diaphragm, and the lower end of the return spring is propped against the bottom wall of the second driving cavity.
2. The impact resistant vacuum interface valve of claim 1, wherein: the middle section of the circumferential side wall of the piston diaphragm is sleeved with a flexible throat hoop, so that the circumferential side wall of the piston diaphragm is prevented from expanding due to lateral pressure of damping fluid.
3. The impact resistant vacuum interface valve of claim 1, wherein: the damping liquid chamber is sealed and fixed at the top of the valve body, and the first one-way valve and the second one-way valve are both arranged on the top wall of the valve body; the inlet of the first one-way valve is positioned in the damping liquid chamber, and the outlet of the first one-way valve is communicated with the damping cavity; and the outlet of the second one-way valve is positioned in the damping liquid chamber, and the inlet of the second one-way valve is communicated with the damping cavity.
4. The impact resistant vacuum interface valve of claim 1, wherein: the top center of the valve body is provided with a cavity opening, a plug cover is connected to the cavity opening in a sealing mode, the connecting rod penetrates through the plug cover, and a movable sealing ring is arranged between the connecting rod and the plug cover.
5. The impact resistant vacuum interface valve of claim 1, wherein: the inner side surface of the bottom wall of the valve body is a spherical wall surface, the first inlet is positioned at the center of the bottom wall of the valve body, the first outlet is positioned on the cylindrical side wall of the valve body, and when the piston diaphragm expands and moves downwards to the bottom of the valve body, the piston diaphragm is tightly attached to the spherical wall surface at the bottom of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910552458.0A CN110319233B (en) | 2019-06-25 | 2019-06-25 | Shock-resistant vacuum interface valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910552458.0A CN110319233B (en) | 2019-06-25 | 2019-06-25 | Shock-resistant vacuum interface valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110319233A CN110319233A (en) | 2019-10-11 |
| CN110319233B true CN110319233B (en) | 2024-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910552458.0A Active CN110319233B (en) | 2019-06-25 | 2019-06-25 | Shock-resistant vacuum interface valve |
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| CN (1) | CN110319233B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110906046A (en) * | 2019-12-02 | 2020-03-24 | 厚力德机器（杭州）有限公司 | Vacuum drainage electroless pure mechanical actuator |
| CN114321423B (en) * | 2021-11-27 | 2023-10-17 | 宜昌测试技术研究所 | Vacuum valve for unmanned underwater vehicle and assembling and vacuumizing operation method thereof |
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|---|---|---|---|---|
| CN202834271U (en) * | 2012-11-01 | 2013-03-27 | 黄石市海成节能科技开发有限公司 | Delay self-closing flush valve |
| CN107940020A (en) * | 2017-11-09 | 2018-04-20 | 新疆巨盛龙环保设备有限公司 | A kind of pneumatic diaphragm valve and the method using the pneumatic diaphragm valve trandfer fluid |
| CN110332333A (en) * | 2019-06-25 | 2019-10-15 | 浙江广播电视大学 | A kind of interface valve and its fault early warning method |
| CN210978605U (en) * | 2019-06-25 | 2020-07-10 | 浙江广播电视大学 | Impact-resistant vacuum interface valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013113357A1 (en) * | 2013-12-03 | 2015-06-03 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve |
| CN108730562B (en) * | 2018-06-20 | 2019-12-03 | 杭州电子科技大学 | A self-priming damping vacuum diaphragm valve |
-
2019
- 2019-06-25 CN CN201910552458.0A patent/CN110319233B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202834271U (en) * | 2012-11-01 | 2013-03-27 | 黄石市海成节能科技开发有限公司 | Delay self-closing flush valve |
| CN107940020A (en) * | 2017-11-09 | 2018-04-20 | 新疆巨盛龙环保设备有限公司 | A kind of pneumatic diaphragm valve and the method using the pneumatic diaphragm valve trandfer fluid |
| CN110332333A (en) * | 2019-06-25 | 2019-10-15 | 浙江广播电视大学 | A kind of interface valve and its fault early warning method |
| CN210978605U (en) * | 2019-06-25 | 2020-07-10 | 浙江广播电视大学 | Impact-resistant vacuum interface valve |
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| Publication number | Publication date |
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| CN110319233A (en) | 2019-10-11 |
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