CN206694643U - A kind of diaphragm actuator - Google Patents
A kind of diaphragm actuator Download PDFInfo
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- CN206694643U CN206694643U CN201720478614.XU CN201720478614U CN206694643U CN 206694643 U CN206694643 U CN 206694643U CN 201720478614 U CN201720478614 U CN 201720478614U CN 206694643 U CN206694643 U CN 206694643U
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- spring
- membrane cover
- diaphragm
- gas outlet
- film room
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Abstract
The utility model discloses a kind of diaphragm actuator, belongs to regulating valve technical field.Solve the problems, such as that diaphragm actuator disassembly process is cumbersome in the prior art, the technical scheme for solving the problem mainly includes support, push rod, diaphragm, first membrane cover and the second membrane cover, diaphragm is fixed between the first membrane cover and the second membrane cover, diaphragm and the first membrane cover form the first film room, diaphragm and the second membrane cover form the second film room, support has air supply channel, air supply channel includes air inlet, first gas outlet and the second gas outlet, air inlet and the first gas outlet, second gas outlet connects, first gas outlet connects the first film room, second gas outlet connects the second film room, air inlet and the second gas outlet are located on the lateral wall of support.The utility model can reduce unnecessary disassembly process so that disassembly process is more convenient, improves operating efficiency.
Description
Technical field
Regulating valve is the utility model is related to, particularly a kind of diaphragm actuator.
Background technology
Pneumatic control valve is exactly using compressed gas as power source, and by means of valve positioner, converter, magnetic valve, guarantor
The annexes such as position valve, air accumulator, pneumatic filter go to drive valve, realize switching value or proportion expression regulation.Wherein actuator is often adopted
With more spring diaphragm actuators, the input pressure of pneumatic regulation meter is converted into push rod displacement by more spring diaphragm actuators
Change.It can move on to valve element the position corresponding with input signal with the body portion connection of regulating valve by valve rod.
More spring diaphragm actuators have that control is simple, rapid reaction, and essential safety, are not required to take again in addition explosion-proof
The characteristics of measure.But connection unification, the immobilization of pneumatic actuator, when need change executing agency or change the mode of action
When, it is necessary to be dismounted to all multi-parts such as support, push rod and involution nut, disassembly process is cumbersome.
For a long time, domestic and foreign scholars all constantly put forward various plans, and domestic and international some scientific research institutions and company are also to this
Numerous studies and experiment are carried out, achieves some achievements.The name as disclosed in the Chinese patent of Patent No. 201620554523.5
For the patent of pneumatic diaphragn actuating mechanism, by setting the locking plate of welding to be directly connected to support, although avoid support and
Be directly connected between lower membrane cover, can flexible combination and dismounting and change, but still without solving with anti-to make in switching positive interaction
Cumbersome disassembly process during with two kinds of modes of action.
Utility model content
In view of the shortcomings of the prior art, the utility model discloses a kind of diaphragm actuator, can solve the problem that diaphragm type is held
The problem of row mechanism disassembly process is cumbersome.
To realize object above, the utility model is achieved by the following technical programs：
A kind of diaphragm actuator, including support, push rod, diaphragm, the first membrane cover and the second membrane cover, the diaphragm are fixed
Between the first membrane cover and the second membrane cover, diaphragm and the first membrane cover form the first film room, and diaphragm and the second membrane cover form the second film
Room, the support have air supply channel, and the air supply channel includes air inlet, the first gas outlet and the second gas outlet, air inlet
Connected with the first gas outlet, the second gas outlet, the first gas outlet is used to connect the first film room, and the second gas outlet is used to connect second
Film room, air inlet and the second gas outlet are located on the lateral wall of support.
Further, the air supply channel includes inlet channel, the first outlet passageway and the second outlet passageway, the air inlet
Passage end, first outlet passageway one end and second outlet passageway one end are vertical two-by-two and connect, the connection of the inlet channel other end
Air inlet, the first outlet passageway other end connect the first gas outlet, and the second outlet passageway other end connects the second gas outlet.
Further, first gas outlet connects the first membrane cover and the first film room of connection by connecting pipe joint, described
Close the second gas outlet.
Further, pressure release head is provided with second membrane cover, the pressure release head includes the connection gentle cap of pipe joint, institute
Gas cap is stated to be arranged on connection pipe joint.
Further, the first film room is provided with spring base, the first spring and the first stop collar, and the spring base is set
On diaphragm, the first spring one end connecting spring seat, the first spring other end connects the second membrane cover, first stop collar
It is arranged in the first spring and is fixedly connected with spring base.
Further, first gas outlet connects the first membrane cover by screw plug, and second gas outlet is connected by tracheae
Logical second film room.
Further, pressure release head is additionally provided with first membrane cover, the pressure release head includes connection pipe joint and filtering
Plug, the filtering plug are arranged on connection pipe joint.
Further, the first film room is provided with spring base, the first spring, second spring and the second stop collar, described
Spring base is arranged on diaphragm, the first spring one end connecting spring seat, and the first spring other end connects the first membrane cover, described
Second spring one end connecting spring seat, the second spring other end connects the first membrane cover, and second spring is arranged in the first spring,
Described second spacing be set in second spring and be detachably connected with spring base.
Further, axle sleeve is provided between the push rod and support, be provided between the axle sleeve and push rod bearing and
Double Y-shaped axle sealing rings.
Further, there is flange on the lateral wall of first membrane cover and the second membrane cover, be provided with and hang on the flange
Ring.
The utility model discloses a kind of diaphragm actuator, has the following advantages that：It is gentle by being provided with steam line
Pipe, can reduce unnecessary disassembly process, improve operating efficiency；By on the first membrane cover and the second membrane cover that are correspondingly arranged
Screw plug and connection pipe joint, avoid replacing of the disassembly process to part, improving operating efficiency reduces installation cost；It is logical
The first stop collar and the second stop collar set is crossed, the abnormal displacements of spring during use is avoided, adds diaphragm type and hold
Security during the use of row mechanism.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model embodiment 1；
Fig. 2 is the mplifying structure schematic diagram of double Y-shaped axle sealing rings in the utility model embodiment；
Fig. 3 is the mplifying structure schematic diagram of air inlet in the utility model embodiment；
Fig. 4 is the structural representation of the utility model embodiment 2.
1, support in figure, 2, screw, 3, packing ring, 4, travel indicator, 5, ring indicator, 6, baffle plate, 7, lever screw,
8th, push rod, 9, double Y-shaped axle sealing rings, 10, bearing, 11, filtering plug, 12, axle sleeve, 13, pad, the 14, first film room, 15,
First membrane cover, 16, diaphragm, 17, screw thread, 18, suspension ring, 19, flange, 20, spring base, the 21, first spring, 22, adjusting set, 23,
Nut, 24, gas cap, 25, connection pipe joint, 26, spacing screw plug, 27, centre bore, 28, screw plug, the 29, second film room, 30, second
Membrane cover, 31, elbow, 32, straight joint, 33, tracheae, 34, directintermination joint, 35, screw, 36, nut, 37, packing ring, 38, OK
Journey scale, 39, air inlet, 40, air supply channel, 41, screw plug, the 42, second gas outlet, the 43, first gas outlet, 44, second spring,
45th, the first stop collar, the 46, second stop collar.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
Embodiment 1
As shown in Figure 1 to Figure 3, a kind of diaphragm actuator described in the utility model embodiment include support 1, push rod 8,
Diaphragm 16, the first membrane cover 30 and the second membrane cover 15, the top of support 1 are connected by screw with the second membrane cover 15, the He of the first membrane cover 30
Flange 19 is respectively provided with the lateral wall of second membrane cover 15, the first membrane cover 30 and the second membrane cover 15 are connected with each other by screw, flange
19 side is provided with suspension ring 18, and the lower end of suspension ring 18 has screw thread 17, and suspension ring 18 are tightened on flange 19 by screw thread 17, are used for
Lifting and movement when being easy for installation and removal.
The surface of second membrane cover 30 offers centre bore 27 by bore hole.Limited location screw plug 26 is installed on centre bore 27, is used for
Push rod 8 is carried out in vertical direction spacing.The surface of first membrane cover 15 offers centre bore also by bore hole, in the first membrane cover 15
Heart hole is spacing for being carried out in the horizontal direction to push rod 8.Diaphragm 16 is fixed by screws in the first membrane cover 15 and the second membrane cover 30
Between, for the first film room 14 and the second film room 29 will to be divided between the first membrane cover 15 and the second membrane cover 30.
The top of support 1 offers air supply channel 40 by drilling, and the air supply channel of air supply channel 40 includes inlet channel, first
Outlet passageway and the second outlet passageway, described inlet channel one end, first outlet passageway one end and second outlet passageway one end two
Two vertical and connections, inlet channel other end connection air inlet 39, the first outlet passageway other end connect the first gas outlet 43, the
The two outlet passageway other ends connect the second gas outlet 42, connect the first membrane cover 15 simultaneously by connecting pipe joint on the first gas outlet 43
Connect the first film room 14.Screw plug 42 has been screwed on second gas outlet 41, for preventing the pressure of input steam line 40 from leaking, has been protected
The pressure for demonstrate,proving input is sufficient.The pressure of input is passed through the first film room 14 by being vertically arranged air supply channel 40, avoided directly
The inconvenience of the installation and removal come with the connect band of the first film room 14.The side of air supply channel 40 is communicated with air inlet 39, air inlet 39
For connecting controller, such as pneumatic adjusting apparatus or locator.First gas outlet 43 of air supply channel 40 is connected by connecting tube
First film room 14, the pressure for controller to be inputted are passed through the first film room 14, change into the displacement of push rod 8.
Connection pipe joint 25 is installed on second membrane cover 30, connects and gas cap 24 is installed on pipe joint 25, opened as pressure
Close and use, when the pressure in the second film room 29 is more than Opening pressure, pressure switch is opened, i.e., gas cap is opened, and sheds overload
Pressure, prevent superpressure and the phenomenon of explosion.
First film room is provided with spring base 20, the first spring 21 and the first stop collar 45, and spring base 20 is arranged on diaphragm 16
On, the one end of the first spring 21 is welded on the other end on spring base 20 and is welded on the inwall of the first membrane cover 30, and the first stop collar 45 passes through
First spring 21 is symmetrically welded on spring base 20, for preventing the first spring 21 from deforming or being subjected to displacement in the horizontal direction, is protected
Protect the normal work of the first spring 21.
Push rod 8 is arranged on support 1, and axle sleeve 12 is provided between push rod 8 and support 1, has projection among axle sleeve 12
Annulus, it is spacing for being carried out in vertical direction to axle sleeve 12.Pad 13 is enclosed on push rod 8, positioned at the second membrane cover 15 and diaphragm 16
Between, for protecting push rod 8 to reduce the pressure that is subject to, bearing 10 and double Y-shaped axles are provided between axle sleeve 12 and push rod 8 with close
Seal 9, for being supported to push rod 8 and the position restriction of horizontal direction.
Lever screw 7 is provided with the outer wall of push rod 8, is provided with the side inwall of support 1 and 7 corresponding baffle plate of lever screw
6, when push rod 8 reaches the limit of position, lever screw 7 can be blocked by baffle plate 6, so as to limit displacement of the push rod 8 in vertical direction,
Prevent from being damaged.The one end of push rod 8 is provided with travel indicator 4 and ring indicator 5, for detecting stroke.Support opposite side inwall
On be provided with stroke scale 38, for intuitively showing and observing the displacement of push rod 8.
Diaphragm actuator operation principle is as follows in the present embodiment：Controller produces the source of the gas with certain pressure and passed through
Steam line 40 on support 1 enters the first film room 14, diaphragm 16 and spring base 20 is produced in the first film room 14 upward
Thrust, and then promote the first spring 21 to compress and drive push rod 8 to move up, until acting on diaphragm caused by the first spring 21
16 and spring base 20 on downward reaction force and source of the gas caused by produce upward thrust to diaphragm 16 and spring base 20 mutual
Balance each other.The now displacement of push rod 8 is exactly the displacement of the diaphragm actuator under reaction.Pass through the displacement of push rod 8
The valve connected to push rod 8 is controlled.
When the pressure of source of the gas caused by controller is reduced, the first bullet in diaphragm actuator under reaction
Reaction force caused by spring 21 is just more than thrust caused by source of the gas, and now push rod 8 moves down, until pressure caused by source of the gas is
When zero, the diaphragm actuator under reaction is restored to original state.The valve for driving push rod 8 to be connected is restored to first
Beginning state.
Embodiment 2
As shown in Figures 2 to 4, a kind of diaphragm actuator described in the utility model embodiment includes support 1, push rod 8, film
Piece 16, the first membrane cover 15 and the second membrane cover 30, the top of support 1 is respectively by connecting pipe joint 25 and the membrane cover 15 of screw plug 28 and first
Flange 19 is respectively provided with the lateral wall of connection, the second membrane cover 30 and the first membrane cover 15, the first membrane cover 30 and the second membrane cover 15 pass through
Screw is connected with each other, and the side of flange 19 is provided with suspension ring 18, and the lower end of suspension ring 18 has screw thread 17, and suspension ring 18 are revolved by screw thread 17
Tightly on flange 19, lifting and movement during for being easy for installation and removal.
Diaphragm 16 is fixed by screws between the first membrane cover 15 and the second membrane cover 30, for by the first membrane cover 15 and second
The first film room 14 and the second film room 29 are divided between membrane cover 30.The surface of second membrane cover 30 offers centre bore 27 by bore hole,
Centre bore 27 installs limited location screw plug 26, spacing for being carried out to push rod 8 in vertical direction.The surface of first membrane cover 15 is also by boring
Hole offers centre bore, and centre bore is spacing for being carried out in the horizontal direction to push rod 8.
The top of support 1 offers air supply channel 40 by drilling, the air supply channel of 40 air supply channel of air supply channel 40 include into
Gas passage, the first outlet passageway and the second outlet passageway, described inlet channel one end, first outlet passageway one end and the second outlet
Passage end is vertical two-by-two and connects, inlet channel other end connection air inlet 39, first outlet passageway other end connection first
Gas outlet 43, the second outlet passageway other end connect the second gas outlet 42, screwed on the first gas outlet 43 of air supply channel 40
Screw plug 28, for connecting the first membrane cover 15 and support 1, and seal the first gas outlet 43, the second gas outlet 41 of air supply channel 40
Tracheae 33 is connected by directintermination joint 34, tracheae 33 connects the second film room 29 with straight joint 32 by elbow 31, by hanging down
The pressure of input is passed through the first film room 14 by the air supply channel 40 directly set, avoids what is directly come with the connect band of the first film room 14
The inconvenience of installation and removal.The side of air supply channel 40 is communicated with air inlet 39, and air inlet 39 is used to connect controller, such as pneumatically
Adjusting apparatus or locator.
First film room 14 is provided with spring base 20, the first spring 21, the stop collar 46 of second spring 44 and second, spring base 20
On the membrane 16, the one end of the first spring 21 is welded on the other end on spring base 20 and is welded on the inwall of the first membrane cover 30 for installation, and second
Spring 44 is arranged in the first spring 21, and both ends are respectively welded on the inwall of 20 and first membrane cover of spring base 30, the second stop collar
46 are symmetrically welded on spring base 20 through second spring 44, for preventing the first spring 21 and second spring 44 from deforming or in water
Square to being subjected to displacement, the normal work of the first spring 21 and second spring 44 is protected.
Push rod 8 is arranged on support 1, and axle sleeve 12 is provided between push rod 8 and support 1, has projection among axle sleeve 12
Annulus, it is spacing for being carried out in vertical direction to axle sleeve 12.Pad 13 is enclosed on push rod 8, positioned at the second membrane cover 15 and diaphragm 16
Between, for protecting push rod 8 to reduce the pressure that is subject to, bearing 10 and double Y-shaped axles are provided between axle sleeve 12 and push rod 8 with close
Seal 9, for being supported to push rod 8 and the position restriction of horizontal direction.
Lever screw 7 is provided with the outer wall of push rod 8, is provided with the side inwall of support 1 and 7 corresponding baffle plate of lever screw
6, when push rod 8 reaches the limit of position, lever screw 7 can be blocked by baffle plate 6, so as to limit displacement of the push rod 8 in vertical direction,
Prevent from being damaged.The one end of push rod 8 is provided with travel indicator 4 and ring indicator 5, for detecting stroke.Support opposite side inwall
On be provided with stroke scale 38, for intuitively showing and observing the displacement of push rod 8.
Diaphragm actuator operation principle is as follows in the present embodiment：Controller produces the source of the gas with certain pressure and passed through
Steam line 40 on support 1 and the tracheae 30 being connected between the second air chamber and steam line 40 enter the second air chamber, the
Downward thrust is produced in two air chambers to diaphragm 16 and spring base 20, so promote the first spring 21 to compress and drive push rod 8 to
Lower movement, until the upward reaction force acted on caused by the first spring 21 on diaphragm 16 and spring base 20 produces with source of the gas
Downward thrust produced to diaphragm 16 and spring base 20 mutually balanced each other.The now displacement of push rod 8 is exactly under positive interaction state
The displacement of diaphragm actuator.The valve connected by the displacement of push rod 8 to push rod 8 is controlled.
When the pressure of source of the gas caused by controller is reduced, the first bullet in diaphragm actuator under positive interaction state
Reaction force caused by spring 21 is just more than thrust caused by source of the gas, and now push rod 8 moves up, until pressure caused by source of the gas is
When zero, the diaphragm actuator under positive interaction state is restored to original state.The valve for driving push rod 8 to be connected is restored to first
Beginning state.
In summary, the utility model discloses a kind of diaphragm actuator, is provided with steam line and and air supply pipe
The tracheae that road is used cooperatively, because controller directly connects with the steam line on support, therefore machine can be performed in diaphragm type
Structure only carries out operating the first membrane cover and the second membrane cover when dismounting, and without being dismounted to controller, reduces and tears open
The troublesome operation of dress process, improving operating efficiency reduces time cost, reduces what disassembly process was brought to sealing device
Abrasion, improves seal life.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.Above example is only saying
Bright the technical solution of the utility model, rather than its limitations；Although the utility model is carried out with reference to the foregoing embodiments in detail
Explanation, it will be understood by those within the art that：It still can be to the technical scheme described in foregoing embodiments
Modify, or equivalent substitution is carried out to which part technical characteristic；And these modifications or replacement, do not make relevant art
The essence of scheme departs from the spirit and scope of various embodiments of the utility model technical scheme.
Claims (10)
1. a kind of diaphragm actuator, including support, push rod, diaphragm, the first membrane cover and the second membrane cover, the diaphragm are fixed on
Between first membrane cover and the second membrane cover, diaphragm and the first membrane cover form the first film room, and diaphragm and the second membrane cover form the second film room,
It is characterized in that：The support has air supply channel, and the air supply channel includes air inlet, the first gas outlet and the second outlet
Mouthful, air inlet connects with the first gas outlet, the second gas outlet, and the first gas outlet is used to connect the first film room, and the second gas outlet is used
In connecting the second film room, air inlet and the second gas outlet are located on the lateral wall of support.
2. diaphragm actuator according to claim 1, it is characterised in that：The air supply channel include inlet channel,
First outlet passageway and the second outlet passageway, described inlet channel one end, first outlet passageway one end and the second outlet passageway one
End is vertical two-by-two and connects, and inlet channel other end connection air inlet, the first outlet passageway other end connects the first gas outlet, the
The two outlet passageway other ends connect the second gas outlet.
3. diaphragm actuator according to claim 2, it is characterised in that：First gas outlet is connect by connecting tube
Head the first membrane cover of connection simultaneously connects the first film room, the second gas outlet closing.
4. diaphragm actuator according to claim 3, it is characterised in that：Pressure release is provided with second membrane cover
Head, the pressure release head include the connection gentle cap of pipe joint, and the gas cap is arranged on connection pipe joint.
5. diaphragm actuator according to claim 3, it is characterised in that：The first film room be provided with spring base,
First spring and the first stop collar, the spring base are arranged on diaphragm, the first spring one end connecting spring seat, the first bullet
The spring other end connects the second membrane cover, and described first spacing be set in the first spring and be fixedly connected with spring base.
6. diaphragm actuator according to claim 2, it is characterised in that：First gas outlet is connected by screw plug
First membrane cover, second gas outlet connect the second film room by tracheae.
7. diaphragm actuator according to claim 6, it is characterised in that：Pressure release is additionally provided with first membrane cover
Head, the pressure release head include connection pipe joint and filtering plug, and the filtering plug is arranged on connection pipe joint.
8. diaphragm actuator according to claim 6, it is characterised in that：The first film room be provided with spring base,
First spring, second spring and the second stop collar, the spring base are arranged on diaphragm, the first spring one end connecting spring
Seat, the first spring other end connect the first membrane cover, second spring one end connecting spring seat, second spring other end connection the
One membrane cover, and second spring is arranged in the first spring, described second spacing is set in second spring and can with spring base
Dismantling connection.
9. diaphragm actuator according to claim 1, it is characterised in that：Axle is provided between the push rod and support
Set, bearing and double Y-shaped axle sealing rings are provided between the axle sleeve and push rod.
10. diaphragm actuator according to claim 1, it is characterised in that：First membrane cover and the second membrane cover
There is flange on lateral wall, suspension ring are provided with the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720478614.XU CN206694643U (en) | 2017-05-03 | 2017-05-03 | A kind of diaphragm actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720478614.XU CN206694643U (en) | 2017-05-03 | 2017-05-03 | A kind of diaphragm actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206694643U true CN206694643U (en) | 2017-12-01 |
Family
ID=60448102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720478614.XU Active CN206694643U (en) | 2017-05-03 | 2017-05-03 | A kind of diaphragm actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206694643U (en) |
-
2017
- 2017-05-03 CN CN201720478614.XU patent/CN206694643U/en active Active
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