CN106246990A - Inverse cam formula pneumatic actuator - Google Patents
Inverse cam formula pneumatic actuator Download PDFInfo
- Publication number
- CN106246990A CN106246990A CN201610808218.9A CN201610808218A CN106246990A CN 106246990 A CN106246990 A CN 106246990A CN 201610808218 A CN201610808218 A CN 201610808218A CN 106246990 A CN106246990 A CN 106246990A
- Authority
- CN
- China
- Prior art keywords
- gathering sill
- drum type
- type brake
- piston
- brake piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229910001060 Gray iron Inorganic materials 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 230000033001 locomotion Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000937378 Everettia interior Species 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- 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 actuator, including gray iron, piston and power transmission shaft；Mainly piston uses drum type brake piston, is shaped with two symmetrical interior gathering sills at drum type brake piston inner round wall, and interior gathering sill top and bottom exist radian at drum type brake piston circumferencial direction；Power transmission shaft upper end is provided with moves the guide post coordinated with interior gathering sill, and power transmission shaft lower end is provided with location dish；It is shaped with two symmetrical outer gathering sills at drum type brake outside piston wall, cylinder body is provided with and moves, with outer gathering sill, the guide finger coordinated, outer gathering sill and interior gathering sill are mirrored into symmetry on drum type brake piston periphery, between outer gathering sill top and bottom, the radian at circumferencial direction is 45 °, and between interior gathering sill lower end and upper end, the radian at circumferencial direction is 45 °.Its simple in construction, low cost of manufacture, same air pressure output torque big, air consumption is little.It is applicable to quarter-turn valve used pneumatic actuator.
Description
Technical field
The invention belongs to valve actuator, especially with regard to a kind of Pneumatic valve actuator.The present invention is applicable to right angle and returns
Turn valve used pneumatic actuator.
Background technology
Pneumatic valve actuator is typically by cylinder, piston and piston rod, and piston rod is connected with valve rod, and air pressure promotes piston to make
Piston rod and valve rod are for linear motion, promote valve opening and closing operation.If utility model patent number is CN201420421459.4
Twin-tub Subzero valve pneumatic actuator, is made up of lower cylinder body, upper cylinder body, cylinder cap, and upper cylinder body constitutes obturator with lower cylinder body, closes
Internal have piston, and the epicoele of piston is provided with spring, and the lower end of piston is connected with the upper end of power transmission shaft, the lower end of power transmission shaft and valve rod
Connect.The Pneumatic valve actuator of this structure is only applicable to the executor of the straight stroke valve such as stop valve, gate valve, for such as ball
The quarter-turn valve such as valve, butterfly valve, in addition it is also necessary to arrange actuating device between power transmission shaft and valve rod, by the rectilinear movement of power transmission shaft
It is converted into the rotary motion of valve rod.Its major defect is that structure is complicated, product cost is high；In valve opening and closing whole process, air pressure promotes
The rotary speed of valve rod is the most equal, and valve opening initial stage and closedown need bigger air pressure when putting in place, and piston rod occupies
Area bigger 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.
Summary of the invention
It is an object of the invention to the shortcoming existed for prior art, it is provided that a kind of result is simple, low cost of manufacture, same
The inverse cam formula pneumatic actuator that the effective output of air pressure is high, air consumption is little.
Technical scheme includes gray iron, piston and power transmission shaft, and cylinder body is provided with air pressure mouth and lower air pressure
Mouthful；Mainly piston uses drum type brake piston, is shaped with two symmetrical interior gathering sills, interior gathering sill at drum type brake piston inner round wall
Upper end is near the inwall of drum type brake piston upper cover, and lower end leads directly to the lower port of drum type brake piston, and interior gathering sill top and bottom exist
There is radian in drum type brake piston circumferencial direction, the radian in interior gathering sill stage casing is more than its epimere and the radian of hypomere；On power transmission shaft
End is provided with guide post radially, and the two ends periphery of guide post is dynamic with interior gathering sill in inserting interior gathering sill to be coordinated, under power transmission shaft
End is provided with location dish, and this location dish lower planes is arranged between sealing baffle and cylinder body bottom by bearing；Live at drum type brake
Justifying wall beyond the Great Wall and be shaped with two symmetrical outer gathering sills, cylinder body is provided with and moves the guide finger coordinated with outer gathering sill, outer gathering sill and
Interior gathering sill is mirrored into symmetry on drum type brake piston periphery, at the radian of circumferencial direction between outer gathering sill top and bottom
Being 45 °, between interior gathering sill lower end and upper end, the radian at circumferencial direction is 45 °.
Preferably, connecting guide plate is fixed in power transmission shaft upper surface, and guide plate periphery is dynamic with drum type brake piston inner round wall joins
Close, in guide plate plane, be shaped with passage；On guide plate, one end of planar central and indicating arm is fixing is connected, another of indicating arm
End passes outside drum type brake piston upper cover and cylinder body top cover, between indicating arm periphery and drum type brake piston upper cover and cylinder body top cover
Movable sealing coordinates.
Preferably, location dish uses cam mechanism, and cylinder body arranges the location bar that the cam with location dish mutually contacts, fixed
Use between position bar and cylinder body and threaded.
It is an advantage of the invention that manufacturing gathering sill on drum type brake piston circle wall cooperates with the guide post on power transmission shaft,
Rectilinear movement up and down by drum type brake piston is converted into the rotary motion of power transmission shaft, its simple in construction, low cost of manufacture, same to sample gas
The output torque of pressure is big, air consumption is little.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of drum type brake piston in Fig. 1 of the present invention.
Fig. 3 is the structure sectional view in Fig. 1 seat A-A direction of the present invention.
Detailed description of the invention
Inverse cam formula pneumatic actuator as shown in Figure 1, including cylinder body 4, cylinder cap, piston 7 and power transmission shaft 3, cylinder body 4 sets
Having upper air pressure mouth and lower air pressure mouth, upper air pressure mouth connects with the upper piston chamber of piston 7 upper surface, lower air pressure mouth and piston 7 lower end
The lower piston chamber connection in face, cylinder cap is made up of top cover 9 and bottom 1；Piston 7 uses drum type brake piston, in drum type brake piston inner circle
Wall is shaped with two symmetrical interior gathering sills 14, and interior gathering sill 14 upper end is near the inwall of drum type brake piston upper cover, and lower end is straight-through round
The lower port of pot type piston, there is radian, interior gathering sill 14 at drum type brake piston circumferencial direction in interior gathering sill 14 top and bottom
The radian in stage casing is more than its epimere and the radian of hypomere, and the gradient in i.e. interior gathering sill 14 stage casing is more flat, and the gradient at two ends is relatively steep,
Piston 7 shift motion just section and latter end, identical axial displacement produces the less anglec of rotation, exports bigger moment, meets
Valve opening initial stage and closedown moment in latter stage are big, open and close the characteristic requirements that pilot process moment is little；Power transmission shaft 3 upper end is provided with radially
Guide post 10, the two ends periphery of guide post 10 moves with interior gathering sill 14 in gathering sill 14 in inserting and coordinates, power transmission shaft 3 lower end
Be provided with location dish 12, this location dish 12 lower planes by bearing 11 be arranged on sealing baffle 2 and cylinder body 4 lower end bottom 1 it
Between, between power transmission shaft 3 periphery and sealing baffle 2, movable sealing coordinates, and makes power transmission shaft 3 can revolve on bottom 1 and sealing baffle 2
Turn, and limit power transmission shaft 3 and move axially；It is shaped with two symmetrical outer gathering sills 15 at drum type brake outside piston wall, cylinder body 4 sets
Have and the outer dynamic guide finger 5 coordinated of gathering sill 15, outer gathering sill 15 and interior gathering sill 14 mirror image on drum type brake piston periphery
Symmetry, outer gathering sill 15 and interior gathering sill 14 are symmetrically distributed in a mid-plane two by drum type brake piston centreline
Side, outer gathering sill 15 and interior gathering sill 14 form inverse cam formula structure, as shown in Figure 2；Between outer gathering sill 15 top and bottom
Radian at circumferencial direction is 45 °, and between interior gathering sill 14 lower end and upper end, the radian at circumferencial direction is 45 °, at drum type brake
When piston moves a stroke from top to bottom, drum type brake piston opposing cylinder 4 turns clockwise 45 °, and power transmission shaft 3 is relative to cylinder
Formula piston turns clockwise 45 °, so that power transmission shaft 3 opposing cylinder 4 turns clockwise 90 °, it is achieved that power transmission shaft 3 transmission 90 °
The keying operation of turning valve.Under the displacement that drum type brake piston is same, power transmission shaft 3 anglec of rotation is the least, then output turns
Square is the biggest, uses the superposition that drum type brake piston opposing cylinder 4 rotates and power transmission shaft 3 rotates relative to drum type brake piston, is ensureing
In the case of output torque is constant, the axial length of drum type brake piston can be shortened, reduce small product size.Owing to drum type brake piston is
Piston-rodless structure, source of the gas pressure application surface when upper air pressure mouth and lower air pressure mouth air inlet amasss identical, reduces and promotes drum type brake
The bleed pressure of piston, air consumption is little, and compared with prior art air consumption reduces 30%-40%.And, losing bleed pressure
In the case of, drum type brake piston reliably rests in situ, it is achieved valve location self-locking, it is not necessary to separately join guarantor position valve.It addition, by right
Outer gathering sill 15 and the design of interior gathering sill 14 segmentation gradient, valve opening and closing speed can realize changing up soon pass, change down pass soon, opens slowly
Quick closing valve and slowly change down pass operation.In the present embodiment, outer gathering sill 15 and interior gathering sill 14 use two ends middle flat gradient suddenly to set
Meter, it is achieved valve changes down pass operation slowly, applicable valve opening initial stage sealing surface is mutually disengaged and closedown puts in place, and sealing surface is mutually pressed
The operation requirement that tight stage moment of torsion is bigger.
Connecting guide plate 6 is fixed in power transmission shaft 3 upper surface, and guide plate 6 periphery is dynamic with drum type brake piston inner round wall to be coordinated, and protects
Holding the concentricity of power transmission shaft 3 and drum type brake piston, be shaped with passage in guide plate 6 plane, passage can have several, it is ensured that
The air pressure unobstructed entrance drum type brake piston cavity of lower air pressure mouth；On guide plate 6, planar central is fixed with one end of indicating arm 8
Connecting, the other end of indicating arm 8 passes outside the top cover 9 of drum type brake piston upper cover and cylinder body 4 upper end, the rotation of instruction power transmission shaft 3
Gyration, i.e. valve opening.Between indicating arm 8 periphery with drum type brake piston upper cover and top cover 9, movable sealing coordinates.
Location dish 12 uses cam structure, and cylinder body 4 arranges the location bar 13 that the cam with location dish 12 mutually contacts, fixed
Use between position bar 13 and cylinder body 4 and threaded, by the distance between regulation bar 13 end, location and location dish 12 cam, can
With control valve closing angle, location bar 13 has two, and one of them is for closing location, valve position, and another positions for valve opening position, as
Shown in Fig. 3.
Claims (3)
1. an inverse cam formula pneumatic actuator, including cylinder body (4), cylinder cap, piston (7) and power transmission shaft (3), cylinder body sets 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, be shaped with two at drum type brake piston inner round wall
Symmetrical interior gathering sill (14), there is radian at drum type brake piston circumferencial direction in interior gathering sill (14) top and bottom；Power transmission shaft
(3) upper end is provided with guide post (10) radially, with interior guiding in the interior gathering sill (14) of two ends periphery insertion of guide post (10)
Groove (14) is dynamic to be coordinated, and power transmission shaft (3) lower end is provided with location dish (12), and this location dish (12) lower planes is installed by bearing (11)
Between the bottom (1) of sealing baffle (2) and cylinder body 4 lower end；It is shaped with two symmetrical outer guiding at drum type brake outside piston wall
Groove (15), cylinder body (4) is provided with the guide finger (5) that coordinate dynamic with outer gathering sill (15), outer gathering sill (15) and interior gathering sill
(14) specular on drum type brake piston periphery；Between outer gathering sill (15) top and bottom, the radian at circumferencial direction is
45 °, interior gathering sill (14) is 45 ° at the radian of circumferencial direction between lower end and upper end.
Inverse cam formula pneumatic actuator the most according to claim 1, is characterized in that power transmission shaft (3) upper surface is fixed connection and led
To plate (6), guide plate (6) periphery is dynamic with drum type brake piston inner round wall to be coordinated, and is shaped with passage in guide plate (6) plane；Lead
On plate (6), planar central is fixing with one end of indicating arm (8) is connected, and the other end of indicating arm (8) passes on drum type brake piston
Top cover (9) outside of lid and cylinder body (4) upper end, dynamic close between indicating arm (8) periphery and drum type brake piston upper cover and top cover (9)
Envelope coordinates.
Inverse cam formula pneumatic actuator the most according to claim 1 and 2, is characterized in that location dish (12) uses cam knot
Structure, the location bar (13) that the upper cam arranged with location dish (12) of cylinder body (4) mutually contacts, location bar (13) and cylinder body (4) it
Between use threaded.
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 true CN106246990A (en) | 2016-12-21 |
| CN106246990B 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 |
|---|---|
| CN (1) | CN106246990B (en) |
Cited By (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 | An Economical and Practical Plug Valve Hydraulic Drive Mechanism |
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 |
Cited By (2)
| 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 | An Economical and Practical Plug Valve Hydraulic Drive Mechanism |
| CN110701367B (en) * | 2019-10-29 | 2025-01-10 | 江苏宏泰石化机械有限公司 | A hydraulic drive mechanism for a plug valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106246990B (en) | 2018-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |