CN208090052U - High temperature vibration damped pneumatic actuator - Google Patents
High temperature vibration damped pneumatic actuator Download PDFInfo
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- CN208090052U CN208090052U CN201820228527.3U CN201820228527U CN208090052U CN 208090052 U CN208090052 U CN 208090052U CN 201820228527 U CN201820228527 U CN 201820228527U CN 208090052 U CN208090052 U CN 208090052U
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- ring
- sliding shoe
- valve rod
- pneumatic actuator
- movable plate
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Abstract
The utility model proposes a kind of high temperature vibration damped pneumatic actuator, upper outlet body and lower cover form cavity；Lower cover wears valve rod, and bottom wall sets fixed ring；Bellows upper end is sealed with movable plate, and lower end is tightly connected ring body；Upper limit part is set above movable plate, screw socket and lower limit part are set in lower section；Valve stem tip is screwed together in lower screw socket, and ring body is screwed on by screw piece in fixed ring, and resetting spring is set between movable plate and lower cover in bellows；Upper outlet body top sets damping device, including shell, and inside is the first chamber and the second chamber, and the two joint forms step；First intracavitary houses sliding shoe, sets shock structure below, is slidedly arranged on the second intracavitary；Housing tip screws togather sealing plug, and damping spring is set between sliding shoe, and sliding shoe is pressed together on step；First intracavitary is full of elastic liquid；Throttle orifice is set in sliding shoe and shock structure, upper end opening is in sliding shoe top surface, and lower ending opening is in shock structure side.The utility model is suitable for high-temperature severe environment, good damping effect.
Description
Technical field
The utility model is related to valve actuator technical field, specifically a kind of high temperature vibration damped pneumatic actuator.
Background technology
Pneumatic actuator be opened and closed with air pressure power drive or the executive device of control valve, and by title pneumatic actuator or
Pneumatic device.
For diaphragm type pneumatic actuator, the material of diaphragm determines its use environment, since conventional thin membrane type is pneumatically held
The diaphragm of row device is typically to be made of nitrile rubber or fluorubber, and nitrile rubber or fluorubber do not adapt to hot environment so that
Traditional air bladder head cannot use under high-temperature situation.Existing pneumatic actuator needs to be inverted when replacing Positive-Negative Action
Limiting component and spring in cylinder also need to change valve rod, change valve rod height.It needs to re-work valve rod, operate very numerous
Trivial, of high cost, working hour is long, inefficiency.In addition, due in the course of work valve rod it is larger to the impact force of cylinder cap, and it is existing
Connection between limiter and valve rod and cylinder end piece is rigid connection, and limiter does not have shock-absorbing function, and valve rod is to limiter
Impact force be transferred directly on cylinder end piece, easily damage valve rod, cylinder end piece and associated component, influence normal life
Production.
Utility model content
The utility model proposes a kind of high temperature vibration damped pneumatic actuator, it is not applicable to solve pneumatic actuator in the prior art
In hot environment and the problem of damping difference.
What the technical solution of the utility model was realized in：
A kind of high temperature vibration damped pneumatic actuator, including seal closure, the interior seal closure is cavity；The seal closure includes upper
Cover body and lower cover；
Be provided with sealing in the middle part of the lower end of the lower cover, the sealing is equipped with valve rod, the valve rod with it is described
Valve rod sealing member is provided between sealing；The upper end of the valve rod is located at the inside cavity, the top setting of the valve rod
There is the first external screw thread；The lower end of the valve rod is located at the containment portion below the lower cover；
It is provided with the fixed ring protruding upward of annular on the bottom wall of the cavity, the is provided on the outside of the fixed ring
Two external screw threads；The cavity is connected to blow vent, and the blow vent is located at the top of the upper outlet body；
A bellows is provided in the cavity, upper port and the movable plate of the bellows seal, the top of the movable plate
Be provided with upper limit part, lower screw socket and lower limit part be provided with below the movable plate, be provided on the inside of the lower screw socket with
The first internal thread that first external screw thread is used cooperatively；The lower end of the bellows is sealedly connected with a ring body；
The top of the valve rod is screwed together in the lower screw socket, and the ring body is screwed on the fixed ring by a screw piece
On, be provided with resetting spring in the cavity, the resetting spring be set to the movable plate in the bellows with it is described under
Between the bottom wall of cover body；
The top of the upper outlet body is provided with the damping device opposite with the upper limit part；The damping device includes one
The shell being arranged on the upper outlet body, the enclosure interior are the first chamber and the second chamber setting up and down, and second chamber exists
It is inwardly indented to form step with first chamber joint；First intracavitary is equipped with and can be slided up and down along first chamber
Sliding shoe is provided with shock structure below the sliding shoe, and the shock structure is slidedly arranged on second intracavitary, the shock structure
The lower end of the shell and opposite with the upper limit part is stretched out in lower section；
The top of the shell is screwed with sealing plug, and damping bullet is provided between the sealing plug and the sliding shoe
The sliding shoe is pressed together on the step by spring, the damping spring；First intracavitary is full of elastic liquid；
Throttle orifice is provided in the sliding shoe, the upper end opening of the throttle orifice is in the top surface of the sliding shoe；It is described
The lower end of throttle orifice extends in the shock structure, and the lower ending opening of the throttle orifice is in the side of the shock structure.
Further, the screw piece has the pressure ring of an annular, and the outside of the pressure ring is equipped with vertical with the pressure ring
Side ring, be provided with the second internal thread being used cooperatively with second external screw thread on the inside of the side ring；
The ring body is pressed together in the fixed ring by the pressure ring.
Further, the pressure ring and the fixed ring are provided with seal washer on the contact surface of the ring body.
Further, the compression ratio of the elastic liquid is not less than 2%.
Further, the lower limit part is circular column, and the lower limit part is looped around the periphery of the lower screw socket, described
One end that resetting spring connects with the movable plate is located at the inside of the lower limit part, and is looped around the outside of the lower screw socket.
Further, the lower end of the upper outlet body is provided with the first upper edge, and the upper end of the lower cover is provided under first
Edge, first upper edge are bolted with first lower edge.
Further, it is provided with holder below the lower cover.
The beneficial effects of the utility model are：
The utility model is simple in structure, reasonable design；Using bellows instead of original diaphragm so that the utility model
It can be used in high-temperature severe environment；Damping device can improve damping effect, avoid that component is caused to damage；The utility model is applicable in
In high-temperature severe environment, good damping effect, simple installation reduces cost, improves work efficiency.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the enlarged structure schematic diagram at ring body in Fig. 1；
Fig. 3 is the structural schematic diagram of damping device.
Wherein：
1, upper outlet body；2, lower cover；3, sealing；4, valve rod；5, valve rod sealing member；6, fixed ring；7, shell；8, it ventilates
Mouthful；9, the first chamber；10, bellows；11, movable plate；12, the second chamber；13, upper limit part；14, lower screw socket；15, lower limit part；16,
Ring body；17, resetting spring；18, pressure ring；19, side ring；20, seal washer；21, the first upper edge；22, the first lower edge；23, bolt；
24, cavity；25, holder；26, sliding shoe；27, shock structure；28, upper seal；29, lower seal；30, sealing plug；31, subtract
Shake spring；32, throttle orifice.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figs. 1-3, the high temperature vibration damped pneumatic actuator in the present embodiment, including seal closure are in the seal closure
Cavity 24；The seal closure includes upper outlet body 1 and lower cover 2.
Be provided with sealing 3 in the middle part of the lower end of the lower cover 2, the sealing 3 is equipped with valve rod 4, the valve rod 4 with
Valve rod sealing member 5 is provided between the sealing 3；The upper end of the valve rod 4 is located inside the cavity 24, the valve rod 4
Top be provided with the first external screw thread；The lower end of the valve rod 4 is located at outside the cavity 24 of 2 lower section of the lower cover.
The fixed ring 6 protruding upward of annular, the outside setting of the fixed ring 6 are provided on the bottom wall of the cavity 24
There is the second external screw thread；The cavity 24 is connected to blow vent 8, and the blow vent 8 is located at the top of the upper outlet body 1.The chamber
A bellows 10 is provided in body 24, upper port and the movable plate 11 of the bellows 10 seal, the top setting of the movable plate 11
There are upper limit part 13, the lower section of the movable plate 11 to be provided with lower screw socket 14 and lower limit part 15, the inside of the lower screw socket 14 is set
It is equipped with the first internal thread being used cooperatively with first external screw thread；The lower end of the bellows 10 is sealedly connected with a ring body
16。
The top of the valve rod 4 is screwed together in the lower screw socket 14, and the ring body 16 is screwed on described solid by a screw piece
Determine on ring 6, resetting spring 17 is provided in the cavity 24, the resetting spring 17 is set to described in the bellows 10
Between movable plate 11 and the bottom wall of the lower cover 2.
The top of the upper outlet body 1 is provided with the damping device opposite with the upper limit part 13；The damping device packet
A shell 7 being arranged on the upper outlet body 1 is included, 7 inside of the shell is the first chamber 9 and the second chamber 12 setting up and down, institute
The second chamber 12 is stated to be inwardly indented to form step with 9 joint of the first chamber；Being equipped in first chamber 9 can be along described
The lower section of the sliding shoe 26 that one chamber 9 slides up and down, the sliding shoe 26 is provided with shock structure 27, and the shock structure 27 is slidedly arranged on institute
It states in the second chamber 12, the lower end of the shell 7 and opposite with the upper limit part 13 is stretched out in the lower section of the shock structure 27；Sliding
The side of block 26 is provided with upper seal 28, improves the sealing between sliding shoe 26 and the cavity wall of the first chamber 9, the chamber of the second chamber 12
It is provided with lower seal 29 on wall, improves the sealing between the cavity wall and shock structure 27 of the second chamber 12.
The top of the shell 7 is screwed with sealing plug 30, is arranged between the sealing plug 30 and the sliding shoe 26
There are damping spring 31, the damping spring 31 that the sliding shoe 26 is pressed together on the step；Bullet is full of in first chamber 9
Property the hydroelasticity liquid oil-based liquid of generally selecting compression ratio larger, the compression ratio of the elastic liquid is not less than 2%.It is described
Throttle orifice 32 is provided in sliding shoe 26, the upper end opening of the throttle orifice 32 is in the top surface of the sliding shoe 26；The throttling
The lower end in hole 32 extends in the shock structure 27, and the lower ending opening of the throttle orifice 32 is in the side of the shock structure 27.
In the present embodiment, there is the screw piece pressure ring 18 of an annular, the outside of the pressure ring 18 to be equipped with and the pressure
The vertical side ring 19 of ring 18, the inside of the side ring 19 are provided with the second internal thread being used cooperatively with second external screw thread；
The ring body 16 is pressed together in the fixed ring 6 by the pressure ring 18.The pressure ring 18 and the fixed ring 6 and the ring body 16
Contact surface on be provided with seal washer 20.The lower limit part 15 be circular column, the lower limit part 15 be looped around it is described under
The periphery of screw socket 14, one end that the resetting spring 17 connects with the movable plate 11 are located at the inside of the lower limit part 15, and
It is looped around the outside of the lower screw socket 14.The lower end of the upper outlet body 1 is provided with the first upper edge 21, the upper end of the lower cover 2
Along 22 under being provided with first, first upper edge 21 is fixed along 22 by bolt 23 under described first.The lower section of the lower cover 2
It is provided with holder 25.
In the present embodiment, spring is set between the movable plate 11 and the bottom wall of the lower cover 2, and spring pushes plate upwards
11, upper limit part 13 is resisted against on damping device；Gas is passed through into cavity 24 from blow vent 8, then gas push movable plate 11 to
Lower movement, compress bellows 10 and resetting spring 17, valve rod 4 move down；The gas in cavity 24 is discharged by blow vent 8, then it is multiple
Position spring 17 resets, and bellows 10, movable plate 11 and valve rod 4 is pushed to reset；In 17 reseting procedure of resetting spring, upper limit part 13
Move up and contacted with the shock structure 27 in damping device, shock structure 27 is pushed to move, at this point, elastic liquid in shell 7 and
Damping spring 31 is compressed, and shock structure 27 moves up, and annular chamber, the bullet in the first chamber 9 are generated between shock structure 27 and shell 7
Property liquid by throttle orifice 32 enter the annular chamber in, since the aperture overcurrent by throttle orifice 32 is limited, the fortune of shock structure 27
Dynamic speed is controlled, and upper limit part 13 is converted into the impact energy of shock structure 27 pressure of the elastic liquid in first chamber 9
The elastic potential energy of energy and damping spring 31, and the pressure energy of the elastic liquid in the first chamber 9 is during shock structure 27 is run
Gradually elastic liquid is made to enter annular chamber to be discharged.The present embodiment is using bellows 10 instead of original diaphragm so that this
Embodiment can be used in high-temperature severe environment；Damping device can improve damping effect, avoid that component is caused to damage；The present embodiment
Suitable for high-temperature severe environment, good damping effect, simple installation reduces cost, improves work efficiency.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (7)
1. a kind of high temperature vibration damped pneumatic actuator, which is characterized in that be cavity in the seal closure including seal closure；It is described close
Sealing cover includes upper outlet body and lower cover；
Sealing is provided in the middle part of the lower end of the lower cover, the sealing is equipped with valve rod, the valve rod and the sealing
Valve rod sealing member is provided between portion；The upper end of the valve rod is located at the inside cavity, and the top of the valve rod is provided with
One external screw thread；The lower end of the valve rod is located at the containment portion below the lower cover；
It is provided with the fixed ring protruding upward of annular on the bottom wall of the cavity, is provided with outside second on the outside of the fixed ring
Screw thread；The cavity is connected to blow vent, and the blow vent is located at the top of the upper outlet body；
A bellows is provided in the cavity, upper port and the movable plate of the bellows seal, the top setting of the movable plate
Have upper limit part, lower screw socket and lower limit part be provided with below the movable plate, be provided on the inside of the lower screw socket with it is described
The first internal thread that first external screw thread is used cooperatively；The lower end of the bellows is sealedly connected with a ring body；
The top of the valve rod is screwed together in the lower screw socket, and the ring body is screwed on by a screw piece in the fixed ring, institute
It states and is provided with resetting spring in cavity, the resetting spring is set to the movable plate and the lower cover in the bellows
Between bottom wall；
The top of the upper outlet body is provided with the damping device opposite with the upper limit part；The damping device is worn including one
Shell on the upper outlet body, the enclosure interior be the first chamber and the second chamber setting up and down, second chamber with institute
The first chamber joint is stated to be inwardly indented to form step；First intracavitary is equipped with the sliding that can be slided up and down along first chamber
Block is provided with shock structure below the sliding shoe, and the shock structure is slidedly arranged on second intracavitary, the lower section of the shock structure
Stretch out the lower end of the shell and opposite with the upper limit part；
The top of the shell is screwed with sealing plug, and damping spring is provided between the sealing plug and the sliding shoe,
The sliding shoe is pressed together on the step by the damping spring；First intracavitary is full of elastic liquid；
Throttle orifice is provided in the sliding shoe, the upper end opening of the throttle orifice is in the top surface of the sliding shoe；The throttling
The lower end in hole extends in the shock structure, and the lower ending opening of the throttle orifice is in the side of the shock structure.
2. high temperature vibration damped pneumatic actuator as described in claim 1, which is characterized in that the screw piece has the pressure of an annular
The outside of ring, the pressure ring is equipped with the side ring vertical with the pressure ring, is provided with and the described second outer spiral shell on the inside of the side ring
The second internal thread that line is used cooperatively；
The ring body is pressed together in the fixed ring by the pressure ring.
3. high temperature vibration damped pneumatic actuator as claimed in claim 2, which is characterized in that the pressure ring and the fixed ring and institute
It states and is provided with seal washer on the contact surface of ring body.
4. high temperature vibration damped pneumatic actuator as claimed in claim 3, which is characterized in that the compression ratio of the elastic liquid is not small
In 2%.
5. high temperature vibration damped pneumatic actuator as claimed in claim 4, which is characterized in that the lower limit part is circular column, institute
The periphery that lower limit part is looped around the lower screw socket is stated, one end that the resetting spring connects with the movable plate is located at the lower limit
The inside of position part, and it is looped around the outside of the lower screw socket.
6. high temperature vibration damped pneumatic actuator as claimed in claim 5, which is characterized in that the lower end of the upper outlet body is provided with
The upper end of one upper edge, the lower cover is provided with the first lower edge, and first upper edge is bolted with first lower edge.
7. high temperature vibration damped pneumatic actuator as claimed in claim 6, which is characterized in that be provided with branch below the lower cover
Frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820228527.3U CN208090052U (en) | 2018-02-08 | 2018-02-08 | High temperature vibration damped pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820228527.3U CN208090052U (en) | 2018-02-08 | 2018-02-08 | High temperature vibration damped pneumatic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208090052U true CN208090052U (en) | 2018-11-13 |
Family
ID=64063993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820228527.3U Active CN208090052U (en) | 2018-02-08 | 2018-02-08 | High temperature vibration damped pneumatic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208090052U (en) |
-
2018
- 2018-02-08 CN CN201820228527.3U patent/CN208090052U/en active Active
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