CN106246990B - Inverse cam formula pneumatic actuator - Google Patents
Inverse cam formula pneumatic actuator Download PDFInfo
- Publication number
- CN106246990B CN106246990B CN201610808218.9A CN201610808218A CN106246990B CN 106246990 B CN106246990 B CN 106246990B CN 201610808218 A CN201610808218 A CN 201610808218A CN 106246990 B CN106246990 B CN 106246990B
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- China
- Prior art keywords
- guide groove
- drum type
- type brake
- piston
- brake piston
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/16—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member
- F16K31/163—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston
- F16K31/1635—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston for rotating valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Actuator (AREA)
Abstract
The present invention relates to a kind of inverse cam formula pneumatic actuators, including gray iron, piston and transmission shaft；Mainly piston uses drum type brake piston, is formed with two symmetrical interior guide grooves in drum type brake piston inner round wall, there are radians in drum type brake piston circumferencial direction for interior guide groove top and bottom；Transmission shaft upper end is equipped with the guide rod with the dynamic cooperation of interior guide groove, and transmission shaft lower end is equipped with positioning disk；It is formed with two symmetrical outer guide grooves in drum type brake outside piston wall, cylinder body is equipped with the guide pin with the dynamic cooperation of outer guide groove, outer guide groove and interior guide groove are mirrored into symmetrically on drum type brake piston periphery, between outer guide groove top and bottom the radian of circumferencial direction be 45 °, between interior guide groove lower end and upper end the radian of circumferencial direction be 45 °.Its is simple in structure, manufacturing cost is low, the output torque of same air pressure is big, air consumption is small.Suitable for quarter-turn valve used pneumatic actuator.
Description
Technical field
The invention belongs to valve actuators, especially with regard to a kind of Pneumatic valve actuator.The present invention is returned suitable for right angle
Turn valve used pneumatic actuator.
Background technology
Generally by cylinder, piston and piston rod, piston rod is connect Pneumatic valve actuator with valve rod, and air pressure pushes piston to make
Piston rod and valve rod are for linear motion, push valve opening and closing operation.As utility model patent number is CN201420421459.4
Twin-tub Subzero valve pneumatic actuator, is made of lower cylinder body, upper cylinder body, cylinder cap, and upper cylinder body constitutes obturator, closing with lower cylinder body
There are piston, the epicoele of piston to be equipped with spring in vivo, the lower end of piston and the upper end of transmission shaft connect, the lower end of transmission shaft and valve rod
Connection.The Pneumatic valve actuator of this structure is only applicable to the actuator of the straight stroke valves such as shut-off valve, gate valve, for such as ball
The quarter-turns valve such as valve, butterfly valve, it is also necessary to which transmission device is set between transmission shaft and valve rod, by the linear movement of transmission shaft
It is converted into the rotary motion of valve rod.Its major defect is that complicated, product cost is high；Air pressure pushes in valve opening and closing whole process
The rotary speed of valve rod is all equal, and valve opening initial stage needs larger air pressure with when closing in place, and piston rod occupies
Larger area in piston flat surface reduces the active area of air pressure, and air pressure is low with the transformation efficiency of output torque, air consumption
Greatly.
Invention content
The purpose of the present invention is being directed to disadvantage of the existing technology, provide that a kind of result is simple, manufacturing cost is low, same
The inverse cam formula pneumatic actuator that the effective output of air pressure is high, air consumption is small.
Technical scheme of the present invention includes gray iron, piston and transmission shaft, and cylinder body is equipped with upper air pressure mouth and lower air pressure
Mouthful；Mainly piston uses drum type brake piston, and two symmetrical interior guide grooves, interior guide groove are formed in drum type brake piston inner round wall
Upper end is close to the inner wall of drum type brake piston upper cover, and the lower port of the straight-through drum type brake piston in lower end, interior guide groove top and bottom exist
Drum type brake piston circumferencial direction is there are radian, the radian in the interior guide groove stage casing radian of section and hypomere thereon greatly；On transmission shaft
Guide rod of the end equipped with radial direction, the both ends periphery of guide rod, which is inserted into interior guide groove, moves cooperation with interior guide groove, under transmission shaft
End is equipped with positioning disk, which is mounted on by bearing between sealing baffle and cylinder body bottom cover；It lives in drum type brake
Plug cylindrical wall is formed with two symmetrical outer guide grooves, cylinder body be equipped with the dynamic guide pin coordinated of outer guide groove, outer guide groove with
Interior guide groove is mirrored on drum type brake piston periphery symmetrically, in the radian of circumferencial direction between outer guide groove top and bottom
Be 45 °, between interior guide groove lower end and upper end the radian of circumferencial direction be 45 °.
Preferably, transmission shaft upper surface is fixedly connected with guide plate, and guide plate periphery is moved with drum type brake piston inner round wall matches
It closes, venthole is formed in guide plate plane；Planar central is fixedly connected with one end of indicating arm on guide plate, indicating arm it is another
End is pierced by outside drum type brake piston upper cover and cylinder body head cover, between indicating arm periphery and drum type brake piston upper cover and cylinder body head cover
Dynamic sealing coordinates.
Preferably, positioning disk uses cam mechanism, and the locating rod mutually contacted with the cam of positioning disk is arranged on cylinder body, fixed
It uses and is threadedly coupled between position bar and cylinder body.
It is an advantage of the invention that manufacture guide groove cooperates with the guide rod on transmission shaft on drum type brake piston circle wall,
Convert the linear movement up and down of drum type brake piston to the rotary motion of transmission shaft, it is simple in structure, manufacturing cost is low, same gas
The output torque of pressure is big, air consumption is small.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is the structural schematic diagram of drum type brake piston in Fig. 1 of the present invention.
Fig. 3 is the structure sectional view in the directions Fig. 1 seats A-A of the present invention.
Specific implementation mode
Inverse cam formula pneumatic actuator as shown in Figure 1, including cylinder body 4, cylinder cap, piston 7 and transmission shaft 3 are set on cylinder body 4
There are upper air pressure mouth and lower air pressure mouth, upper air pressure mouth to be connected to the upper piston chamber of 7 upper surface of piston, lower air pressure mouth and 7 lower end of piston
The lower piston chamber in face is connected to, and cylinder cap is made of head cover 9 and bottom cover 1；Piston 7 uses drum type brake piston, in drum type brake piston inner circle
Wall is formed with two symmetrical interior guide grooves 14, and 14 upper end of interior guide groove is close to the inner wall of drum type brake piston upper cover, the straight-through circle in lower end
The lower port of pot type piston, there are radian, interior guide grooves 14 in drum type brake piston circumferencial direction for 14 top and bottom of interior guide groove
The radian in stage casing greatly relatively put down thereon by the radian of section and hypomere, i.e., the gradient in interior 14 stage casing of guide groove, and the gradient at both ends is steeper,
Just section and latter end, identical axial displacement generate smaller rotation angle, export larger torque 7 shift motion of piston, meet
Valve opening initial stage and closing latter stage torque are big, open and close the small characteristic requirements of pilot process torque；3 upper end of transmission shaft is equipped with radial
Guide rod 10, the both ends periphery of guide rod 10 be inserted into guide groove 14 with the dynamic cooperation of interior guide groove 14,3 lower end of transmission shaft
Equipped with positioning disk 12,12 lower planes of positioning disk by bearing 11 be mounted on sealing baffle 2 and 4 lower end of cylinder body bottom cover 1 it
Between, dynamic sealing coordinates between 3 periphery of transmission shaft and sealing baffle 2, and transmission shaft 3 is allow to be revolved on bottom cover 1 and sealing baffle 2
Turn, and limits the axial movement of transmission shaft 3；Two symmetrical outer guide grooves 15 are formed in drum type brake outside piston wall, are set on cylinder body 4
There are the guide pin 5 with the dynamic cooperation of outer guide groove 15, outer guide groove 15 and interior guide groove 14 mirror image on drum type brake piston periphery
Symmetrically, i.e., outer guide groove 15 and interior guide groove 14 are symmetrically distributed in a mid-plane two by drum type brake piston centreline
Side, outer guide groove 15 and interior guide groove 14 form inverse cam formula structure, as shown in Figure 2；Between 15 top and bottom of outer guide groove
Circumferencial direction radian be 45 °, between 14 lower end of interior guide groove and upper end the radian of circumferencial direction be 45 °, in drum type brake
When piston moves a stroke from top to bottom, drum type brake piston opposing cylinder 4 rotates clockwise 45 °, and transmission shaft 3 is relative to cylinder
Formula piston rotates clockwise 45 °, to make 3 opposing cylinder 4 of transmission shaft rotate clockwise 90 °, realizes transmission shaft 3 and is driven 90 °
The keying of turning valve operates.Under the same displacement distance of drum type brake piston, 3 rotation angle of transmission shaft is smaller, then output turns
Square is bigger, and the superposition rotated relative to drum type brake piston using the rotation of drum type brake piston opposing cylinder 4 and transmission shaft 3 is being ensured
In the case that output torque is constant, the axial length of drum type brake piston can be shortened, reduce small product size.Since drum type brake piston is
Piston-rodless structure, air source from upper air pressure mouth and lower air pressure mouth air inlet when pressure application surface product it is identical, reduce push drum type brake
The bleed pressure of piston, air consumption is small, and air consumption reduces 30%-40% compared with prior art.Moreover, losing bleed pressure
In the case of, reliably stop in situ, realizes valve location self-locking to drum type brake piston, without another with guarantor's position valve.In addition, by right
Outer guide groove 15 and interior guide groove 14 are segmented the design of gradient, and valve opening and closing speed can be realized to be changed up pass, changes down pass soon, open slowly soon
Quick closing valve and the slow pass that changes down operate.In the present embodiment, outer guide groove 15 and interior guide groove 14 are set using the steep intermediate flat gradient in both ends
Meter realizes that valve changes down pass operation slowly, is suitble to valve opening initial stage sealing surface to be mutually disengaged and close sealing surface in place and mutually presses
The larger operation requirement of tight stage torque.
3 upper surface of transmission shaft is fixedly connected with guide plate 6,6 periphery of guide plate and the dynamic cooperation of drum type brake piston inner round wall, protects
The concentricity of transmission shaft 3 and drum type brake piston is held, venthole is formed in 6 plane of guide plate, venthole there can be several, ensure
The air pressure of lower air pressure mouth is unobstructed to enter drum type brake piston cavity；Planar central and one end of indicating arm 8 are fixed on guide plate 6
The other end of connection, indicating arm 8 is pierced by 9 outside of head cover of 4 upper end of drum type brake piston upper cover and cylinder body, indicates the rotation of transmission shaft 3
Gyration, i.e. valve opening.Dynamic sealing coordinates between 8 periphery of indicating arm and drum type brake piston upper cover and head cover 9.
Positioning disk 12 uses cam structure, and the locating rod 13 mutually contacted with the cam of positioning disk 12 is arranged on cylinder body 4, fixed
It, can by adjusting the distance between 13 end of locating rod and 12 cam of positioning disk using being threadedly coupled between position bar 13 and cylinder body 4
With control valve closing angle, there are two locating rods 13, one of them is closes the positioning of valve position, another is positioned for valve opening position, such as
Shown in Fig. 3.
Claims (3)
1. a kind of inverse cam formula pneumatic actuator, including cylinder body (4), cylinder cap, piston (7) and transmission shaft (3), cylinder body are set on (4)
There are upper air pressure mouth and lower air pressure mouth；It is characterized in that piston (7) uses drum type brake piston, two are formed in drum type brake piston inner round wall
Guide groove (14) in symmetrical, in drum type brake piston circumferencial direction, there are radians for interior guide groove (14) top and bottom；Transmission shaft
(3) upper end is equipped with radial guide rod (10), and the both ends periphery of guide rod (10) is inserted into interior guide groove (14) and interior guiding
The dynamic cooperation of slot (14), transmission shaft (3) lower end are equipped with positioning disk (12), which is installed by bearing (11)
Between the bottom cover (1) of 4 lower end of sealing baffle (2) and cylinder body；It is formed with two symmetrical outer guiding in drum type brake outside piston wall
Slot (15), cylinder body (4) are equipped with the guide pin (5) with the dynamic cooperation of outer guide groove (15), outer guide groove (15) and interior guide groove
(14) mirror symmetry on drum type brake piston periphery；Radian between outer guide groove (15) top and bottom in circumferencial direction is
45 °, interior guide groove (14) is 45 ° in the radian of circumferencial direction between lower end and upper end.
2. inverse cam formula pneumatic actuator according to claim 1, it is characterized in that transmission shaft (3) upper surface is fixedly connected and leads
To plate (6), guide plate (6) periphery moves cooperation with drum type brake piston inner round wall, and venthole is formed in guide plate (6) plane；It leads
Planar central is fixedly connected with one end of indicating arm (8) on plate (6), and the other end of indicating arm (8) is pierced by drum type brake piston
It is moved outside lid and the head cover (9) of cylinder body (4) upper end, between indicating arm (8) periphery and drum type brake piston upper cover and head cover (9) close
Envelope cooperation.
3. inverse cam formula pneumatic actuator according to claim 1 or 2, it is characterized in that positioning disk (12) uses cam knot
Structure, the locating rod (13) that the cam of setting and positioning disk (12) mutually contacts on cylinder body (4), locating rod (13) and cylinder body (4) it
Between using be threadedly coupled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610808218.9A CN106246990B (en) | 2016-08-26 | 2016-08-26 | Inverse cam formula pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610808218.9A CN106246990B (en) | 2016-08-26 | 2016-08-26 | Inverse cam formula pneumatic actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106246990A CN106246990A (en) | 2016-12-21 |
| CN106246990B true CN106246990B (en) | 2018-11-09 |
Family
ID=57598688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610808218.9A Active CN106246990B (en) | 2016-08-26 | 2016-08-26 | Inverse cam formula pneumatic actuator |
Country Status (1)
| Country | Link |
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| CN (1) | CN106246990B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701367A (en) * | 2019-10-29 | 2020-01-17 | 江苏宏泰石化机械有限公司 | Economical and practical hydraulic driving mechanism for plug valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3298659A (en) * | 1962-12-21 | 1967-01-17 | Cupedo Douwe Janse | Fluid power actuated butterfly valve or plug cock |
| US3319925A (en) * | 1965-09-24 | 1967-05-16 | T V Valve Co Ltd | Valve-actuating device |
| US3396938A (en) * | 1965-08-07 | 1968-08-13 | Maenaka Valve Works Co Ltd | Valve actuating device |
| US3492880A (en) * | 1967-05-10 | 1970-02-03 | Gen Valve Co Inc | Valve control and actuating mechanism |
| FR2236103A1 (en) * | 1973-07-04 | 1975-01-31 | Gachot Jean | Pneumatic valve actuator - camming grooves in piston, during vertical travel, rotate central spindle |
| CN2167254Y (en) * | 1993-05-19 | 1994-06-01 | 刘俊章 | Pneumatic valve of short length of trave and continuous action type |
| CN2178806Y (en) * | 1993-12-01 | 1994-10-05 | 白广威 | Novel swayed vat |
| CN104454755A (en) * | 2013-09-16 | 2015-03-25 | 山东钢之杰机电制造有限公司 | Spiral cycloidal oil cylinder |
-
2016
- 2016-08-26 CN CN201610808218.9A patent/CN106246990B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3298659A (en) * | 1962-12-21 | 1967-01-17 | Cupedo Douwe Janse | Fluid power actuated butterfly valve or plug cock |
| US3396938A (en) * | 1965-08-07 | 1968-08-13 | Maenaka Valve Works Co Ltd | Valve actuating device |
| US3319925A (en) * | 1965-09-24 | 1967-05-16 | T V Valve Co Ltd | Valve-actuating device |
| US3492880A (en) * | 1967-05-10 | 1970-02-03 | Gen Valve Co Inc | Valve control and actuating mechanism |
| FR2236103A1 (en) * | 1973-07-04 | 1975-01-31 | Gachot Jean | Pneumatic valve actuator - camming grooves in piston, during vertical travel, rotate central spindle |
| CN2167254Y (en) * | 1993-05-19 | 1994-06-01 | 刘俊章 | Pneumatic valve of short length of trave and continuous action type |
| CN2178806Y (en) * | 1993-12-01 | 1994-10-05 | 白广威 | Novel swayed vat |
| CN104454755A (en) * | 2013-09-16 | 2015-03-25 | 山东钢之杰机电制造有限公司 | Spiral cycloidal oil cylinder |
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| Publication number | Publication date |
|---|---|
| CN106246990A (en) | 2016-12-21 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180302 Address after: 325102 Sanjiang Industrial Park, Yongjia County, Wenzhou, Zhejiang Applicant after: Zhejiang Bethel science and Technology Co., Ltd. Address before: Yongjia Oubei County of Wenzhou City, Zhejiang province 325102 Dong'ou Industrial Zone Applicant before: Boteli Valve Group Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325102 Sanjiang Industrial Park Yongjia County Wenzhou city Zhejiang Province Patentee after: Zhejiang bertley Technology Co.,Ltd. Address before: 325102 Sanjiang Industrial Park Yongjia County Wenzhou city Zhejiang Province Patentee before: ZHEJIANG BOTELI VALVE Group |