CN2115439U - Pneumatic driving device for conneting-rod corner type valve - Google Patents
Pneumatic driving device for conneting-rod corner type valve Download PDFInfo
- Publication number
- CN2115439U CN2115439U CN 91225858 CN91225858U CN2115439U CN 2115439 U CN2115439 U CN 2115439U CN 91225858 CN91225858 CN 91225858 CN 91225858 U CN91225858 U CN 91225858U CN 2115439 U CN2115439 U CN 2115439U
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- Prior art keywords
- connecting rod
- butterfly valve
- output shaft
- utility
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- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 4
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 230000000875 corresponding effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- Fluid-Driven Valves (AREA)
Abstract
The utility model relates to a pneumatic driving device for connecting rod corner type valve apparatus, which is especially suitable for driving and controlling the open of a butterfly valve and the close of the butterfly valve. The utility model which comprises a box body, a transmission mechanism, an output shaft and an air cylinder that is fixed on the box body is characterized in that the transmission mechanism comprises a piston for the air cylinder, a lever of force, a connecting rod and a rocker which are connected according to a certain order; the transmission mechanism for reinforcing the connecting rod causes the rectilinear motion of the piston to be changed into turning moment with a 0-90 DEG turning angle. The transmission method improves the characteristic of the output torque of the pneumatic driving device for meeting the requirements of the torque characteristics when the butterfly valve is opened and is closed. The utility model which has the advantages of improved manufacturability and improved efficiency is an ideal device for driving and controlling the butterfly valve to work.
Description
The utility model relates to a kind of connecting rod reinforcement corner formula valve pneumatic actuating device.
Pneumatic actuating device be a kind of be power with the gas pressure, the special arrangement of drive controlling valve opening and closing, its working procedure is: make pressurized air feed cylinder one end under the control of regulon or artificial given 0.02～0.1Mpa gas signal or DC0～10,4～20mA electrical signal, promote piston motion, drive rocking bar by the arm of force, connecting rod, make output shaft produce 0～90 ° of corresponding corner output torque, the pneumatic actuating device that can produce 90 ° of corner torques has at present: cylinder and rocker type, rack-gear type and swing cylinder formula.The device of these forms, though can both finish 90 ° of corner actions, its torque factor is not suitable for the driving butterfly valve, because above-mentioned various forms of pneumatic actuating device torque factor, problems such as it is very undesirable to be used to drive butterfly valve, and exists manufacturability poor, and efficient is low.
The utility model is exactly at the problems referred to above, and a kind of new technological scheme is proposed, design a kind of driving mechanism of connecting rod reinforcement, thereby improved the output torque characteristic of pneumatic actuating device, make it be suitable for the needs of butterfly valve opening and closing torque factor, having improved manufacturability and efficient, avoided the deficiency of above-mentioned existing pneumatic actuating device output torque, is a kind of ideal device that is suitable for forced seal butterfly valve torque factor.
The utility model is to realize by such technological scheme: device is made up of casing, cylinder, driving mechanism, output shaft etc., it is characterized in that adopting connecting rod energizing driver structure.Box house is installed with the matrix that driving mechanism, casing also are fixedly connected cylinder, support output shaft and other part in the device, after pressurized air enters cylinder, promote piston and drive rocking bar to drive the output shaft output torque by the arm of force, connecting rod, finish a stroke when cylinder piston, then output shaft correspondingly rotates 0～90 °.Butterfly valve is fixedly connected on the output shaft by key, to reach corresponding actions.
In order to increase output torque, the utility model can also adopt such scheme: when moment reaches 4000～5000Nm, can adopt twin-tub to drive as shown in Figure 4: when moment reaches 8000Nm when above, then can adopt four cylinders to drive as shown in Figure 5.
In order to finish two bit motions of switch, this installs configurable two position four-way solenoid valves, when needs are realized continuous control, this install configurable gas signal and or the electrical signal positioning work piece, its input signal is respectively 0.02～0.1Mpa and DC0～10mA or 4～20mA, corresponding relations such as its input signal and valve opening can linear squares, evolution, thus realize control automatically; When the needs valve position feedback, this installs configurable angular displacement transmitter, and it can change 0～90 ° of corner into DC0～10mA or 4～20mA electrical signal.
Above-mentioned connecting rod reinforcement corner formula valve Pneumatic actuator principle is as follows:
Under the drive unit working state, connecting rod energizing driver structure is as shown in Figure 1 stressed, when getting length of connecting rod, rocking bar length and chute center line distance h be equal value between the output shaft hole center line, according to the analysis of power, can release formula: M=PhCos(90 °-alpha-beta)=(Qh/Cos α) Sin(alpha+beta)
In the formula: M is an output torque; P is that the component that acts on the connecting rod: Q is a pneumatic thrust; α is connecting rod and chute center line angle; β is rocking bar and output shaft center line angle.When the β angle reduced, then the α angle increased, and M value increases thereupon, on the contrary the M value then reduce, it is suitable that the proper and butterfly valve of the characteristic curve of M value opens and closes the torque factor curve.
Because drive unit has adopted connecting rod energizing driver structure, makes machine stress good, has improved efficient, so the utility model is the desirable drive unit that drives butterfly valve.
Fig. 1, the utility model driving mechanism schematic diagram.
Fig. 2 is according to the single casing drive unit sectional view of the utility model design.
Fig. 3, the A of Fig. 2～A sectional view.
Fig. 4, two-cylinder type drive unit sectional view.
Fig. 5, four cylinder formula drive unit sectional views.
Below in conjunction with accompanying drawing in detail formation of the present utility model is described in detail.
As Fig. 2, shown in Figure 3 be to drive the pneumatic actuating device sectional view according to a kind of single cylinder provided by the utility model.Device is by casing (1), cylinder (2), and driving mechanism (3), output shaft (4) is adjusted bolt compositions such as (5).Cylinder is provided with two inlet holes, when pressurized gas when last hole enters upper chamber of air cylinder, promote piston (31) and move downward, arm of force axle (33) places the chute up and down (11) of casing (1) and case lid, be movably connected on one with piston rod (32), it is slided along chute (11); Connecting rod (34) is movable rod with rocking bar (35), rocking bar (35) with output shaft (4), makes entire mechanism work flexibility and reliability, thereby changes the straight line motion of piston (31) into 90 ° of corner output torques.When piston (31) moves to after bottom dead center, the pressurized gas structural reform enters cylinder from hole down, makes the output shaft counter-rotation, realizes the whole course of action of opening and closing of valve.
Realize that best mode of the present utility model is: the dead point occurs when avoiding manual, when designing this device, the α angle should be controlled at less than in an angle of 90 degrees scope; Distance h between length of connecting rod, rocking bar length, chute center line and the output shaft hole center line, it is good getting equal value.
Claims (2)
1, a kind of connecting rod reinforcement valve pneumatic actuating device, by casing (1), be fixed on the cylinder (2) on the casing (1), driving mechanism (3) and output shaft (4) constitute, casing (1) is fixedly connected cylinder (2) and supports its inner driving mechanism of installing (3), the matrix of output shaft (4), it is characterized in that driving mechanism (3) is by piston (31), piston rod (32), arm of force axle (33), connecting rod (34), rocking bar (35) consists of connecting rod energizing driver structure, arm of force axle (33) places the chute (11) on the casing (1), with piston rod (32), connecting rod (34) one ends are movably connected on one, can slide along chute (11), connecting rod (34) the other end and rocking bar (35) one ends flexibly connect, and rocking bar (35) the other end connects output shaft (4).
2, install according to claim 1, it is characterized in that connecting rod (34) and rocking bar (35) equal in length in the described driving mechanism (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91225858 CN2115439U (en) | 1991-09-27 | 1991-09-27 | Pneumatic driving device for conneting-rod corner type valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91225858 CN2115439U (en) | 1991-09-27 | 1991-09-27 | Pneumatic driving device for conneting-rod corner type valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2115439U true CN2115439U (en) | 1992-09-09 |
Family
ID=4932058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91225858 Granted CN2115439U (en) | 1991-09-27 | 1991-09-27 | Pneumatic driving device for conneting-rod corner type valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2115439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104554334A (en) * | 2013-10-21 | 2015-04-29 | 宁夏中远天晟科技有限公司 | Automatic angle cock closing restoration device of rail wagon angle cock closing detection device |
-
1991
- 1991-09-27 CN CN 91225858 patent/CN2115439U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104554334A (en) * | 2013-10-21 | 2015-04-29 | 宁夏中远天晟科技有限公司 | Automatic angle cock closing restoration device of rail wagon angle cock closing detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |