CN203948751U - Diaphragm type pneumatic rotary actuator - Google Patents
Diaphragm type pneumatic rotary actuator Download PDFInfo
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- CN203948751U CN203948751U CN201420388438.7U CN201420388438U CN203948751U CN 203948751 U CN203948751 U CN 203948751U CN 201420388438 U CN201420388438 U CN 201420388438U CN 203948751 U CN203948751 U CN 203948751U
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- valve
- push rod
- pneumatic
- rod
- rotary actuator
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Abstract
Diaphragm type pneumatic rotary actuator.Relate to pneumatic actuator field.A kind of delicate structure has been proposed, the property taken into account is good, and cooperate degree is high, can effectively be fit to the angle stroke class valve of all size after use, and then the open amount of valve and output torque are carried out to the diaphragm type pneumatic rotary actuator accurately controlling.For driving the valve rod of valve, described pneumatic actuator comprises upper shell, lower shell body, push rod driving mechanism, push rod, upper frame, underframe, linking mechanism, feedback mechanism and limit position trigger mechanism; Described upper shell, lower shell body, upper frame, underframe are fixedly connected sequentially from top to bottom, and described upper frame comprises epicoele and the cavity of resorption being connected as a single entity, and between described epicoele and cavity of resorption, has dividing plate, and described dividing plate middle part offers tapped hole.The utility model is simple in structure, cost of production is low, with the torque characteristic curve matching of valve.Its adjust precision high, adjust effective.
Description
Technical field
The utility model relates to pneumatic actuator field, relates in particular to the improvement of He Ji diaphragm type pneumatic rotary actuator.
Background technique
At present, the nuclear island of China's nuclear power station and conventional island are used angle stroke class valve more, and control this type of valve by pneumatic actuator.Representative portion " core level film type pneumatic actuating mechanism " by name, application number as the applicant and application on September 29th, 2011 be the document of " 201120374498.X ", the applicant in this case, proposed a kind of simple in structure, shock strength is high and be convenient to the core level film type pneumatic actuating mechanism of installation.
Yet because the material of valve, manufacturing equipment, manufacturing process etc. aspect exists certain difference, and the valve that manufacture in the different place of production also exists certain difference in performance; Therefore, pneumatic actuator and valve exist matching difficulty large (output torque), control accuracy is poor, cooperate degree is low and the property taken into account is poor defect conventionally.
Model utility content
The utility model is for above problem, a kind of delicate structure has been proposed, the property taken into account is good, and cooperate degree is high, after use, can be effectively fit to the angle stroke class valve of all size, and then the open amount of valve and output torque are carried out to the diaphragm type pneumatic rotary actuator accurately controlling.
The technical solution of the utility model is: for driving the valve rod of valve, described pneumatic actuator comprises upper shell, lower shell body, push rod driving mechanism, push rod, upper frame, underframe, linking mechanism, feedback mechanism and limit position trigger mechanism;
Described upper shell, lower shell body, upper frame, underframe are fixedly connected sequentially from top to bottom, and described upper frame comprises epicoele and the cavity of resorption being connected as a single entity, and between described epicoele and cavity of resorption, has dividing plate, and described dividing plate middle part offers tapped hole;
Described push rod vertically arranges and pumps under the driving of push rod driving mechanism, and the upper end of described push rod is stretched between described upper shell and lower shell body and tapped hole is stretched out until in cavity of resorption in the lower end of push rod; Described valve rod is horizontally set on described underframe middle part, and described linking mechanism is connected between described push rod and valve rod, and moving up and down of push rod rotated around himself axle center by linking mechanism band ovable valve stem.
Described push rod driving mechanism is worked under the effect of source of the gas, described push rod driving mechanism comprises diaphragm, pallet, cluster spring, spring seat and adjustment bolt, described source of the gas is communicated with described upper shell, described diaphragm be fixedly connected between described upper shell and lower shell body and and described upper shell between hermetic seal, described pallet is fixedly connected on the top of described push rod and is against on the bottom surface of described diaphragm; Described adjustment bolt is socketed described push rod and is threaded with described tapped hole, and described spring seat is socketed described push rod and is against on the end face of described adjustment bolt, push rod and being connected between described pallet and spring seat described in described cluster spring empty set.
Described cluster spring comprises the spring of some concentrics.
Described linking mechanism comprises jaw, connecting rod and arm bar, described jaw is fixedly connected on described push rod bottom, described arm bar be socketed on described valve rod and with described valve rod synchronous rotary, the top of described connecting rod is hinged with jaw by shipping and reselling on another market, and the bottom of described connecting rod is hinged with arm bar by shipping and reselling on another market.
The two ends of described connecting rod with described in two, ship and resell on another market between by joint ball bearing, be connected.
Described linking mechanism also comprises position-limit mechanism, and described position-limit mechanism comprises some caging bolts, some described caging bolts vertically arrange and dismountable bottom surface that is connected to described underframe on, some described caging bolts are all positioned at described arm bar below.
Described feedback mechanism comprises shift fork, pneumatic positioner valve, pneumatic amplifier, electropneumatic transducer, filtering pressure reducing valve and control signal input source;
Described shift fork is slidably connected in the cavity of resorption of described upper frame and is fixedly connected with the bottom of described push rod, and described shift fork is connected with described pneumatic positioner valve and described pneumatic positioner valve is fixedly connected on outside upper frame;
Described pneumatic amplifier is serially connected between described source of the gas and described upper shell, described filtering pressure reducing valve is serially connected between described source of the gas and described pneumatic positioner valve, and described electropneumatic transducer is serially connected between described filtering pressure reducing valve and pneumatic positioner valve and is communicated with described control signal input source.
Described limit position trigger mechanism comprises compressing tablet one, compressing tablet two and a pair of limit switch, described compressing tablet one and compressing tablet two be dismountable one end that is connected to described valve rod all, and a pair of described limit switch is fixedly connected in underframe and lays respectively at compressing tablet one and compressing tablet two belows.
The utility model is simple in structure, cost of production is low, has improved upper and lower shell body structure, has saved cost of production, pneumatic positioner valve is directly connected on upper frame, structure is more simple compact, has greatly improved the rigidity of structure, has guaranteed the be connected shock strength of upper frame with pneumatic accessories.In addition, diaphragm is two glue one cloth structures, thickness attenuation, hardness deliquescing and be convenient to install.
Compared with prior art, the beneficial effects of the utility model are as follows:
One, owing to being provided with adjustment bolt, thereby finely tune output torque by the mode of decrement of fine setting spring, and then make the pneumatic actuator can more accurate and valve matched, with the torque characteristic curve matching of valve.
Two, in the utility model connecting rod by ship and resell on another market respectively and arm bar, jaw formed chain connection and ship and resell on another market and connecting rod between be provided with joint ball bearing, thereby guaranteed to there will not be in pneumatic actuator running the phenomenon of card jail, the normal operation of obstruction actuator, joint ball bearing allows connecting rod trace inclination radially simultaneously.
Three, with between the spring of conventional angular stroke pneumatic diaphragm actuator without guide rod, compare, the pneumatic actuator medi-spring group empty set of this case, on push rod, makes push rod play guide rod effect to spring, thereby stability more can be guaranteed.
Four, the caging bolt in this case can guarantee that the motion of valve rod is in maximum travel limit, once arrive after range, limited location bolt is born by push rod and is transmitted and next moment, and then effectively guarantee the safety and reliability of valve rod.
Five, in this case by the concrete numerical value in control signal input source is adjusted, and then effectively realized the adjustment of valve angle path increment, its adjust precision high, adjust effective.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model,
Fig. 2 is the partial enlarged drawing at A place in Fig. 1,
Fig. 3 is the stereogram of Fig. 1,
Fig. 4 is the stereogram of linking mechanism and limit position trigger mechanism in the utility model,
Fig. 5 is the structure principle chart of feedback mechanism in the utility model;
In figure, 1 is upper shell, the 2nd, and diaphragm, the 3rd, pallet, the 5th, lower shell body, the 6th, push rod, the 7th, upper frame, the 8th, cluster spring, the 9th, spring seat, the 10th, pneumatic positioner valve, the 11st, adjust bolt, the 12nd, jaw, the 13rd, ship and resell on another market, the 14th, connecting rod, the 15th, joint ball bearing, the 16th, valve rod, the 17th, arm bar, the 18th, caging bolt, the 19th, underframe, the 20th, compressing tablet one, 21st, shift fork, the 24th, limit switch.
Embodiment
As Figure 1-5, for driving the valve rod 16 of valve, described pneumatic actuator comprises upper shell 1, lower shell body 5, push rod driving mechanism, push rod 6, upper frame 7, underframe 19, linking mechanism, feedback mechanism and limit position trigger mechanism to the utility model;
Described upper shell 1, lower shell body 5, upper frame 7, underframe 19 are fixedly connected sequentially from top to bottom, and described upper frame 7 comprises epicoele and the cavity of resorption being connected as a single entity, and between described epicoele and cavity of resorption, has dividing plate, and described dividing plate middle part offers tapped hole;
Described push rod 6 vertically arranges and pumps under the driving of push rod driving mechanism, and the upper end of described push rod 6 is stretched between described upper shell 1 and lower shell body 5 and tapped hole is stretched out until in cavity of resorption in the lower end of push rod 6; Described valve rod 16 is horizontally set on described underframe 19 middle parts, and described linking mechanism is connected between described push rod 6 and valve rod 16, and moving up and down of push rod 6 rotated around himself axle center by linking mechanism band ovable valve stem 16.
Described push rod driving mechanism is worked under the effect of source of the gas, described push rod driving mechanism comprises that diaphragm 2(diaphragm contains upper and lower two-layer glue, the middle terylene folder cloth that adds, for plastic clip cloth structure), pallet 3, cluster spring 8, spring seat 9 and adjust bolt 11, described source of the gas is communicated with described upper shell 1, described diaphragm 2 be fixedly connected between described upper shell 1 and lower shell body 5 and and described upper shell 1 between hermetic seal, described pallet 3 is fixedly connected on the top of described push rod 6 and is against on the bottom surface of described diaphragm 2; Described adjustment bolt 11 is socketed described push rods 6 and is threaded with described tapped hole, described spring seat 9 described push rods 6 of socket and being against on the end face of described adjustment bolt 11, push rod 6 and being connected between described pallet 3 and spring seat 9 described in described cluster spring 8 empty sets.Its working procedure is as follows:
1), source of the gas is when pressurize, by diaphragm applied force expand, distortion downwards, thereby compressing pallet overcomes the restoring force effect of cluster spring, drive push rod descending;
2), source of the gas is when reduce pressure, pallet is affected by the restoring force of cluster spring, will drive push rod to top offset.
In this case, below spring seat, have additional the adjustment bolt being threaded with tapped hole, adjust Spielpassung between bolt and push rod and with the bottom surface laminating of spring seat; Like this, bolt is adjusted in turn can up-down adjustment spring seat, thereby the decrement of cluster spring original state is adjusted, and then the descending pressure of push rod is effectively regulated, and the finally adjusting of torque on realizing valve rod after linking mechanism.Realize the meaning of torque adjustment: fitting degree is high, fitting effect good.
Described cluster spring 8 comprises the spring of some concentrics.Like this, this case can effectively increase the restoring force of unit length by increasing the mode of number of springs, thereby has effectively shortened the length of push rod, and then has effectively saved cost, reduced the overall volume of equipment.
Described cluster spring 8 comprises the spring that a pair of rotation direction is contrary.
Described linking mechanism comprises jaw 12, connecting rod 14 and arm bar 17, described jaw 12 is fixedly connected on described push rod 6 bottoms, described arm bar 17 be socketed on described valve rod 16 and with described valve rod 16 synchronous rotaries (can valve rod and arm bar be synchronizeed by key Connecting format such as square key, splines rotates), the top of described connecting rod 14 by ship and resell on another market 13 with jaw 12 hinged, the bottom of described connecting rod 14 by ship and resell on another market 13 with arm bar 17 hinged.Like this, the vertical displacement amount of push rod can be changed into the rotating amount of arm bar and valve rod, its delicate structure, stability is high and force transmission effect good.
The two ends of described connecting rod 14 are connected by joint ball bearing 15 between 13 with shipping and reselling on another market described in two.Thereby the phenomenon that has guaranteed to there will not be in pneumatic actuator running card jail, the normal operation of obstruction actuator, joint ball bearing also allows connecting rod trace radially to tilt simultaneously.
Described linking mechanism also comprises position-limit mechanism, described position-limit mechanism comprises some caging bolts 18, some described caging bolts 18 vertically arrange and dismountable bottom surface that is connected to described underframe 19 on, some described caging bolts 18 are all positioned at described arm bar 17 belows.Like this, turn caging bolt regulates the relative position of itself and underframe, thereby has effectively realized the effect to valve rod angle stroke adjustment.Immobilize and compare with the stroke limit of traditional pneumatic diaphragn actuating mechanism, the caging bolt of this case can guarantee that pneumatic actuator trace in maximum travel limit regulates effective travel.
Described feedback mechanism comprises shift fork 21, pneumatic positioner valve 10, pneumatic amplifier, electropneumatic transducer, filtering pressure reducing valve and control signal input source;
Described shift fork 21 is slidably connected in the cavity of resorption of described upper frame 7 and is fixedly connected with the bottom of described push rod 6, and described shift fork 21 is connected with described pneumatic positioner valve 10 and described pneumatic positioner valve 10 is fixedly connected on outside upper frame 7; Like this, shift fork can feed back to the real-time position information of push rod (can converse the Real-Time Switch amount information of valve) in pneumatic positioner valve;
Described pneumatic amplifier is serially connected between described source of the gas and described upper shell 1, described filtering pressure reducing valve is serially connected between described source of the gas and described pneumatic positioner valve, and described electropneumatic transducer is serially connected between described filtering pressure reducing valve and pneumatic positioner valve and is communicated with described control signal input source.Its working procedure is: source of the gas is converted to the operating air pressure of 0.3MPa after via filtering pressure reducing valve, one tunnel is delivered in pneumatic positioner valve, another road is delivered in electropneumatic transducer, and imports in pneumatic positioner valve in electropneumatic transducer with after the acting in conjunction of 4-20mA control signal; Meanwhile, another road air pressure, after source of the gas is derived, through after the pneumatic amplifier of being controlled by pneumatic positioner valve, enters between upper shell and diaphragm, completes adding, reducing pressure of " quantitatively ".Specifically: 0-90 ° of enable possition of the 4-20mA control signal of being imported into by control signal input source and valve is linear corresponding relation, during use, only need the concrete numerical value of control signal to regulate, can realize the accurate adjustment of valve opening amount, thereby realize the trace of valve angle stroke, adjust quantitatively and accurately.
Described limit position trigger mechanism comprises compressing tablet 1, compressing tablet two and a pair of limit switch 24, described compressing tablet 1 and compressing tablet two be dismountable one end that is connected to described valve rod 16 all, and a pair of described limit switch 24 is fixedly connected in underframe 19 and lays respectively at compressing tablet 1 and compressing tablet two belows.During use, compressing tablet one, two will synchronously rotate with valve rod, when valve rod goes to standard-sized sheet or full-shut position by by compressing tablet 21, trigger and to be positioned at the limit switch of below separately respectively, thereby realize the feedback of position signal.
Claims (8)
1. diaphragm type pneumatic rotary actuator, for driving the valve rod of valve, it is characterized in that, described pneumatic actuator comprises upper shell, lower shell body, push rod driving mechanism, push rod, upper frame, underframe, linking mechanism, feedback mechanism and limit position trigger mechanism;
Described upper shell, lower shell body, upper frame, underframe are fixedly connected sequentially from top to bottom, and described upper frame comprises epicoele and the cavity of resorption being connected as a single entity, and between described epicoele and cavity of resorption, has dividing plate, and described dividing plate middle part offers tapped hole;
Described push rod vertically arranges and pumps under the driving of push rod driving mechanism, and the upper end of described push rod is stretched between described upper shell and lower shell body and tapped hole is stretched out until in cavity of resorption in the lower end of push rod; Described valve rod is horizontally set on described underframe middle part, and described linking mechanism is connected between described push rod and valve rod, and moving up and down of push rod rotated around himself axle center by linking mechanism band ovable valve stem.
2. diaphragm type according to claim 1 pneumatic rotary actuator, it is characterized in that, described push rod driving mechanism is worked under the effect of source of the gas, described push rod driving mechanism comprises diaphragm, pallet, cluster spring, spring seat and adjustment bolt, described source of the gas is communicated with described upper shell, described diaphragm be fixedly connected between described upper shell and lower shell body and and described upper shell between hermetic seal, described pallet is fixedly connected on the top of described push rod and is against on the bottom surface of described diaphragm; Described adjustment bolt is socketed described push rod and is threaded with described tapped hole, and described spring seat is socketed described push rod and is against on the end face of described adjustment bolt, push rod and being connected between described pallet and spring seat described in described cluster spring empty set.
3. diaphragm type according to claim 2 pneumatic rotary actuator, is characterized in that, described cluster spring comprises the spring of some concentrics.
4. diaphragm type according to claim 1 pneumatic rotary actuator, it is characterized in that, described linking mechanism comprises jaw, connecting rod and arm bar, described jaw is fixedly connected on described push rod bottom, described arm bar be socketed on described valve rod and with described valve rod synchronous rotary, the top of described connecting rod is hinged with jaw by shipping and reselling on another market, and the bottom of described connecting rod is hinged with arm bar by shipping and reselling on another market.
5. diaphragm type according to claim 4 pneumatic rotary actuator, is characterized in that, the two ends of described connecting rod with described in two, ship and resell on another market between by joint ball bearing, be connected.
6. diaphragm type according to claim 4 pneumatic rotary actuator, it is characterized in that, described linking mechanism also comprises position-limit mechanism, described position-limit mechanism comprises some caging bolts, some described caging bolts vertically arrange and dismountable bottom surface that is connected to described underframe on, some described caging bolts are all positioned at described arm bar below.
7. diaphragm type according to claim 2 pneumatic rotary actuator, is characterized in that, described feedback mechanism comprises shift fork, pneumatic positioner valve, pneumatic amplifier, electropneumatic transducer, filtering pressure reducing valve and control signal input source;
Described shift fork is slidably connected in the cavity of resorption of described upper frame and is fixedly connected with the bottom of described push rod, and described shift fork is connected with described pneumatic positioner valve and described pneumatic positioner valve is fixedly connected on outside upper frame;
Described pneumatic amplifier is serially connected between described source of the gas and described upper shell, described filtering pressure reducing valve is serially connected between described source of the gas and described pneumatic positioner valve, and described electropneumatic transducer is serially connected between described filtering pressure reducing valve and pneumatic positioner valve and is communicated with described control signal input source.
8. diaphragm type according to claim 1 pneumatic rotary actuator, it is characterized in that, described limit position trigger mechanism comprises compressing tablet one, compressing tablet two and a pair of limit switch, described compressing tablet one and compressing tablet two be dismountable one end that is connected to described valve rod all, and a pair of described limit switch is fixedly connected in underframe and lays respectively at compressing tablet one and compressing tablet two belows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420388438.7U CN203948751U (en) | 2014-07-14 | 2014-07-14 | Diaphragm type pneumatic rotary actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420388438.7U CN203948751U (en) | 2014-07-14 | 2014-07-14 | Diaphragm type pneumatic rotary actuator |
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| Publication Number | Publication Date |
|---|---|
| CN203948751U true CN203948751U (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420388438.7U Withdrawn - After Issue CN203948751U (en) | 2014-07-14 | 2014-07-14 | Diaphragm type pneumatic rotary actuator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089076A (en) * | 2014-07-14 | 2014-10-08 | 扬州电力设备修造厂 | Diaphragm type angular travel pneumatic actuating mechanism |
| CN107606290A (en) * | 2017-10-20 | 2018-01-19 | 新乡市华航航空液压设备有限公司 | A kind of big stroke metallic membrane structure |
-
2014
- 2014-07-14 CN CN201420388438.7U patent/CN203948751U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089076A (en) * | 2014-07-14 | 2014-10-08 | 扬州电力设备修造厂 | Diaphragm type angular travel pneumatic actuating mechanism |
| CN104089076B (en) * | 2014-07-14 | 2016-08-17 | 扬州电力设备修造厂有限公司 | A kind of diaphragm type pneumatic rotary actuator |
| CN107606290A (en) * | 2017-10-20 | 2018-01-19 | 新乡市华航航空液压设备有限公司 | A kind of big stroke metallic membrane structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141119 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |