CN208090049U - Vibration damped pneumatic actuator - Google Patents
Vibration damped pneumatic actuator Download PDFInfo
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- CN208090049U CN208090049U CN201820225953.1U CN201820225953U CN208090049U CN 208090049 U CN208090049 U CN 208090049U CN 201820225953 U CN201820225953 U CN 201820225953U CN 208090049 U CN208090049 U CN 208090049U
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- cylinder body
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- intracavitary
- outer cylinder
- sliding shoe
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Abstract
The utility model proposes a kind of vibration damped pneumatic actuators, and diffusion gap and lower diffusion gap are set between outer cylinder body and inner cylinder body, connects the first blow vent and the second blow vent respectively；Upper intracavitary sets upper piston, and lower intracavitary sets piston；Inner cylinder body bottom wall wears push rod, is fixed with upper piston and lower piston；Cavity of resorption side wall sets guiding fin, and lower piston side sets guide chute；Lower intracavitary sets resetting spring, and upper end is resisted against on lower piston, and lower end is resisted against on outer cylinder body bottom wall.Locating part is set at the top of upper piston；Cylinder cap sets damping device, including shell, and inside is the first chamber and the second chamber for forming step；First intracavitary sets sliding shoe, and lower section sets shock structure, is slidedly arranged on the second intracavitary；Housing tip screws togather sealing plug, and damping spring is set between sliding shoe, and the 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 occupies little space, good damping effect.
Description
Technical field
The utility model is related to valves to control executive device technical field, specifically a kind of vibration damped pneumatic actuator.
Background technology
Pneumatic valve actuator is to open and close pneumatic ball valve, Pneumatic butterfly valve, pneumatic brake using compressed air as power
The driving device of the pneumatic serial angular travel valve such as valve, pneumatic stopping valve, pneumatic diaphragm valve, pneumatic control valve.It is to realize pipeline
The ideal device of industrial automation pipeline is collectively or individually controlled at a distance.
Some Pneumatic valve actuators, cylinder contribute it is relatively small, according to big level-one cylinder if, body can be brought
Product is huge, weight is heavy, drawbacks, the economic benefits comparison such as of high cost are low.In addition, due to during pistons work piston rod to limit
The impact force of device is larger, and the connection between existing limiter and piston and cylinder end piece is rigid connection, and limiter does not have
There are shock-absorbing function, piston rod to be transferred directly on piston and cylinder end piece the impact force of limiter, easily makes piston, cylinder end
Lid and associated component damage, and influence normally to produce.
Utility model content
The utility model proposes a kind of vibration damped pneumatic actuators, solve pneumatic actuator occupied space in the prior art
Greatly, not compact, of high cost, damping the is poor problem of structure.
What the technical solution of the utility model was realized in：
A kind of vibration damped pneumatic actuator, including outer cylinder body, the top of the outer cylinder body are provided with cylinder cap, in the outer cylinder body
It is provided with inner cylinder body, the top of the inner cylinder body sets opening；The side wall stage casing of the inner cylinder body is provided with the first thread segment, described
The second thread segment being used cooperatively with first thread segment is provided on the side wall of outer cylinder body, the inner cylinder body passes through described
One thread segment and the second thread segment screw togather together with the outer cylinder body；In the upper of first thread segment and the second thread segment
End, there are upper diffusion gaps, the lower end in the upper diffusion gap to be connected with first and lead between the inner cylinder body and the outer cylinder body
Gas port；In the lower end of first thread segment and the second thread segment, there are lower diffusions between the inner cylinder body and the outer cylinder body
The upper end in gap, the lower diffusion gap is connected with the second blow vent；
It is epicoele on the inside of the inner cylinder body, is cavity of resorption in the outer cylinder body of the inner cylinder body lower end；
The upper intracavitary is provided with upper piston, and the lower intracavitary is provided with lower piston；The middle part of the bottom wall of the inner cylinder body
It is equipped with push rod, the upper end of the push rod is fixed with the upper piston, and the middle part of the push rod is fixed with the lower piston, described
The lower end of push rod passes through in the middle part of the bottom wall of the outer cylinder body, and the lower end of the push rod sets valve rod fixed part；The side wall of the cavity of resorption
On be provided with the guiding fin of vertical direction, the side of the lower piston is provided with and the guiding for being oriented to fin and being used cooperatively
Sliding slot, the guiding fin are slidably matched with the guide chute；
The lower intracavitary is provided with resetting spring, and the upper end of the resetting spring is resisted against on the lower piston, described multiple
The lower end of position spring is resisted against on the bottom wall of the outer cylinder body；
Finite place piece is arranged in the top of the upper piston；The damping dress opposite with the locating part is provided on the cylinder cap
It sets；The damping device includes a shell being arranged on the cylinder cap, the enclosure interior be the first chamber setting up and down and
Second chamber, second chamber are inwardly indented to form step with first chamber joint；First intracavitary is equipped with can edge
The sliding shoe that first chamber slides up and down, shock structure is provided with below the sliding shoe, and the shock structure is slidedly arranged on described
The lower end of the shell and opposite with the locating part is stretched out in second intracavitary, the lower section of the shock structure；
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 lower end of the lower piston is provided with upper reset spring slot, and the upper end of the resetting spring is placed in
In the upper reset spring slot；Lower resetting spring slot is provided on the bottom wall of the outer valve, the lower end of the resetting spring holds
It is placed in the lower resetting spring slot.
Further, the locating part is fixing bolt, and the fixing bolt is screwed on the top of the push rod.
Further, the upper reset spring slot and lower resetting spring slot all have the cell wall of annular, and the upper reset
The cell wall of spring groove is opposite up and down with the cell wall of the lower resetting spring slot.
Further, the compression ratio of the elastic liquid is not less than 2%.
The beneficial effects of the utility model are：
The utility model is simple in structure, reasonable design；When epicoele and lower intracavitary are passed through compressed gas, upper piston and lower piston
Push rod linear motion is pushed, and then is moved with ovable valve stem；It is worked at the same time using upper piston and lower piston, improves the power of push rod,
It is compact-sized, it occupies little space, it is at low cost；Gap and lower diffusion gap are spread in setting so that compressed gas can be uniform
Into epicoele and cavity of resorption, the stability of the movement of upper piston and lower piston is improved；Good damping effect.
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 one embodiment of the utility model；
Fig. 2 is the integrated structure schematic diagram of lower piston and outer cylinder body；
Fig. 3 is the structural schematic diagram of damping device.
Wherein：
1, outer cylinder body；2, cylinder cap；3, inner cylinder body；4, the first thread segment；5, the second thread segment；6, upper diffusion gap；7,
One blow vent；8, lower diffusion gap；9, the second blow vent；10, epicoele；11, cavity of resorption；12, upper piston；13, lower piston；14, it pushes away
Bar；15, shell；16, the first chamber；17, the second chamber；18, valve rod fixed part；19, it is oriented to fin；20, guide chute；21, it resets
Spring；22, cell wall；23, locating part；24, sliding shoe；25, shock structure；26, upper seal；27, lower seal；28, spiral shell is sealed
Plug；29, damping spring；30, 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 vibration damped pneumatic actuator in the present embodiment, including outer cylinder body 1, outer cylinder body 1 here is circle
The top of cylinder, the outer cylinder body 1 is provided with cylinder cap 2, and inner cylinder body 3, the top of the inner cylinder body 3 are provided in the outer cylinder body 1
End sets opening, and there are gaps between the top and cylinder cap 2 of the inner cylinder body 3；The side wall stage casing of the inner cylinder body 3 is provided with first
Thread segment 4 is provided with the second thread segment 5 being used cooperatively with first thread segment 4 on the side wall of the outer cylinder body 1, described
Inner cylinder body 3 is screwed togather together by first thread segment, 4 and second thread segment 5 with the outer cylinder body 1；In first screw thread
The upper end of section 4 and the second thread segment 5, there are upper diffusion gap 6, the upper diffusions between the inner cylinder body 3 and the outer cylinder body 1
The upper end in gap 6 and the top of inner cylinder body 3 and cylinder cap 2 gap be connected to, the lower end in the upper diffusion gap 6 is connected with first
Blow vent 7；In the lower end of first thread segment, 4 and second thread segment 5, between the inner cylinder body 3 and the outer cylinder body 1 there are
The upper end in lower diffusion gap 8, the lower diffusion gap 8 is connected with the second blow vent 9；3 inside of the inner cylinder body is epicoele 10, institute
It is cavity of resorption 11 to state in the outer cylinder body 1 of 3 lower end of inner cylinder body, and the cavity of resorption 11 is connected to the lower diffusion gap 8.
It is provided with upper piston 12 in the epicoele 10, lower piston 13 is provided in the cavity of resorption 11；The bottom of the inner cylinder body 3
Push rod 14 is equipped in the middle part of wall, the upper end of the push rod 14 is fixed with the upper piston 12, the middle part of the push rod 14 and institute
The fixation of lower piston 13 is stated, the lower end of the push rod 14 passes through in the middle part of the bottom wall of the outer cylinder body 1；The lower end of the push rod 14 sets valve
Bar fixed part 18；The guiding fin 19 of vertical direction is provided on the side wall of the cavity of resorption 11, the side of the lower piston 13 is set
It is equipped with the guide chute 20 being used cooperatively with the guiding fin 19, the guiding fin 19 is matched with the sliding of the guide chute 20
It closes, being oriented to fin 19 and guide chute 20 can rotate to avoid lower piston 13 during sliding up and down, and ensure push rod 14
Without spin.
Resetting spring 21 is provided in the cavity of resorption 11, the upper end of the resetting spring 21 is resisted against the lower piston 13
On, the lower end of the resetting spring 21 is resisted against on the bottom wall of the outer cylinder body 1.In the present embodiment, under the lower piston 13
End is provided with upper reset spring slot, and the upper end of the resetting spring 21 is placed in the upper reset spring slot；The outer cylinder body 1
Bottom wall on be provided with lower resetting spring slot, the lower end of the resetting spring 21 is placed in the lower resetting spring slot.It is described
Upper reset spring slot and lower resetting spring slot all have annular cell wall 22, and the cell wall 22 of the upper reset spring slot with it is described
About 22 cell wall of lower resetting spring slot is opposite, and when resetting spring 21 is compressed to a certain degree, upper reset spring slot is under
The cell wall 22 of resetting spring slot can contradict each other, and play the role of limit, avoid 21 excess compression of resetting spring.
Finite place piece 23 is arranged in the top of the upper piston 12；It is provided on the cylinder cap 2 opposite with the locating part 23
Damping device；The damping device includes a shell 15 being arranged on the cylinder cap 2, and 15 inside of the shell is above to divide into
The first chamber 16 and the second chamber 17 set, second chamber 17 are inwardly indented to form step with 16 joint of the first chamber；Institute
The sliding shoe 24 that is equipped with and can be slided up and down along first chamber 16 in the first chamber 16 is stated, the lower section of the sliding shoe 24 is provided with
Shock structure 25, the shock structure 25 are slidedly arranged in second chamber 17, and the shell 15 is stretched out in the lower section of the shock structure 25
Lower end is simultaneously opposite with the locating part 23；The side of sliding shoe 24 is provided with upper seal 26, improves sliding shoe 24 and the first chamber
Sealing between 16 cavity wall is provided with lower seal 27 in the cavity wall of the second chamber 17, improves cavity wall and the damping of the second chamber 17
Sealing between column 25.
The top of the shell 15 is screwed with sealing plug 28, is arranged between the sealing plug 28 and the sliding shoe 24
There are damping spring 29, the damping spring 29 that the sliding shoe 24 is pressed together on the step；It is full of in first chamber 16
The compression ratio of elastic liquid, the oil-based liquid that elastic liquid generally selects compression ratio larger, the elastic liquid is not less than 2%.
Throttle orifice 30 is provided in the sliding shoe 24, the upper end opening of the throttle orifice 30 is in the top surface of the sliding shoe 24；It is described
The lower end of throttle orifice 30 extends in the shock structure 25, and the lower ending opening of the throttle orifice 30 is in the side of the shock structure 25
Face.
Here, the locating part 23 is fixing bolt, and the fixing bolt is screwed on the top of the push rod 14, rises simultaneously
To the effect of fixed upper piston 12 and push rod 14.
When the present embodiment works, valve rod fixed part 18 and the valve rod of valve body are connected and fixed；Pass through the first blow vent 7 and second
Blow vent 9 diffuses up gap 6 and lower diffusion gap 8 and is passed through compressed gas, then compressed gas pushes upper piston 12 and lower piston
13 move down, at this point, resetting spring 21 is compressed；Push rod 14 moves down therewith, and then the valve rod being attached thereto is driven to move
It is dynamic, realize the purpose that application valve body is opened；When needing valve body, stopping is passed through compressed gas, and resetting spring 21 is resetted, pushed away
Dynamic lower piston 13, upper piston 12 and push rod 14 reset, and realize the closing of valve body.In 21 reseting procedure of resetting spring, locating part
23 move up and are contacted with the shock structure 25 in damping device, push shock structure 25 to move, at this point, the elastic liquid in shell 15
And damping spring 29 is compressed, shock structure 25 moves up, and generates annular chamber between shock structure 25 and shell 15, in the first chamber 16
Elastic liquid by throttle orifice 30 enter the annular chamber in, since the aperture overcurrent by throttle orifice 30 is limited, shock structure 25
Movement velocity controlled, push rod 14 is converted into the impact energy of shock structure 25 pressure of the elastic liquid in first chamber 16
The elastic potential energy of energy and damping spring 29, and the pressure energy of the elastic liquid in the first chamber 16 is during shock structure 25 is run
Gradually elastic liquid is made to enter annular chamber to be discharged.In the present embodiment, when being passed through compressed gas in epicoele 10 and cavity of resorption 11, on
Piston 12 and lower piston 13 push push rod 14 to move along a straight line, and then are moved with ovable valve stem；It is same using upper piston 12 and lower piston 13
When work, improve push rod 14 power, it is compact-sized, occupy little space, it is at low cost；Gap 6 and lower diffusion seam are spread in setting
Gap 8 so that compressed gas can uniformly enter epicoele 10 and cavity of resorption 11, improve the steady of the movement of upper piston 12 and lower piston 13
It is qualitative；Good damping effect.
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 (5)
1. a kind of vibration damped pneumatic actuator, which is characterized in that including outer cylinder body, the top of the outer cylinder body is provided with cylinder cap, institute
It states and is provided with inner cylinder body in outer cylinder body, the top of the inner cylinder body sets opening；The side wall stage casing of the inner cylinder body is provided with first
Thread segment is provided with the second thread segment being used cooperatively with first thread segment, the inner casing on the side wall of the outer cylinder body
Body is screwed togather together by first thread segment and the second thread segment with the outer cylinder body；In first thread segment and second
The upper end of thread segment, there are upper diffusion gaps, the lower end in the upper diffusion gap to connect between the inner cylinder body and the outer cylinder body
It is connected to the first blow vent；In the lower end of first thread segment and the second thread segment, between the inner cylinder body and the outer cylinder body
There are lower diffusion gap, the upper end in the lower diffusion gap is connected with the second blow vent；
It is epicoele on the inside of the inner cylinder body, is cavity of resorption in the outer cylinder body of the inner cylinder body lower end；
The upper intracavitary is provided with upper piston, and the lower intracavitary is provided with lower piston；It is worn in the middle part of the bottom wall of the inner cylinder body
There are push rod, the upper end of the push rod to be fixed with the upper piston, the middle part of the push rod is fixed with the lower piston, the push rod
Lower end pass through the outer cylinder body bottom wall in the middle part of, the lower end of the push rod sets valve rod fixed part；It is set on the side wall of the cavity of resorption
It is equipped with the guiding fin of vertical direction, the side of the lower piston is provided with the guiding being used cooperatively with the guiding fin and slides
Slot, the guiding fin are slidably matched with the guide chute；
The lower intracavitary is provided with resetting spring, and the upper end of the resetting spring is resisted against on the lower piston, the reset bullet
The lower end of spring is resisted against on the bottom wall of the outer cylinder body；
Finite place piece is arranged in the top of the upper piston；The damping device opposite with the locating part is provided on the cylinder cap；
The damping device includes a shell being arranged on the cylinder cap, and the enclosure interior is the first chamber and second setting up and down
Chamber, second chamber are inwardly indented to form step with first chamber joint；First intracavitary is equipped with can be along described
The sliding shoe that first chamber slides up and down is provided with shock structure below the sliding shoe, and the shock structure is slidedly arranged on described second
The lower end of the shell and opposite with the locating part is stretched out in intracavitary, the lower section of the shock structure；
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. vibration damped pneumatic actuator as described in claim 1, which is characterized in that the lower end of the lower piston is provided with reset
The upper end of spring groove, the resetting spring is placed in the upper reset spring slot；It is provided with down on the bottom wall of the outer valve
The lower end of resetting spring slot, the resetting spring is placed in the lower resetting spring slot.
3. vibration damped pneumatic actuator as claimed in claim 2, which is characterized in that the locating part is fixing bolt, described solid
Determine the top that bolt is screwed on the push rod.
4. vibration damped pneumatic actuator as claimed in claim 3, which is characterized in that the upper reset spring slot and lower resetting spring
Slot all has the cell wall of annular, and the cell wall of the upper reset spring slot is opposite up and down with the cell wall of the lower resetting spring slot.
5. vibration damped pneumatic actuator as claimed in claim 4, which is characterized in that the compression ratio of the elastic liquid is not less than
2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820225953.1U CN208090049U (en) | 2018-02-08 | 2018-02-08 | Vibration damped pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820225953.1U CN208090049U (en) | 2018-02-08 | 2018-02-08 | Vibration damped pneumatic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208090049U true CN208090049U (en) | 2018-11-13 |
Family
ID=64064116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820225953.1U Active CN208090049U (en) | 2018-02-08 | 2018-02-08 | Vibration damped pneumatic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208090049U (en) |
-
2018
- 2018-02-08 CN CN201820225953.1U patent/CN208090049U/en active Active
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