CN201925576U - Novel pneumatic diaphragm actuating mechanism - Google Patents
Novel pneumatic diaphragm actuating mechanism Download PDFInfo
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- CN201925576U CN201925576U CN2011200222511U CN201120022251U CN201925576U CN 201925576 U CN201925576 U CN 201925576U CN 2011200222511 U CN2011200222511 U CN 2011200222511U CN 201120022251 U CN201120022251 U CN 201120022251U CN 201925576 U CN201925576 U CN 201925576U
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- diaphragm
- cover
- actuating mechanism
- membrane cover
- novel pneumatic
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Abstract
The utility model relates to a pneumatic diaphragm control valve actuating mechanism for controlling openness of a control valve, in particular to a novel pneumatic diaphragm actuating mechanism, which comprises an upper diaphragm cover (1), a lower diaphragm cover (3) and a diaphragm (2), wherein the upper diaphragm cover (1) and the lower diaphragm cover (3) are connected with each other, the lower diaphragm cover (3) is sleeved on a push rod (5), and the diaphragm (2) is fixed between the upper diaphragm cover (1) and the lower diaphragm cover (3). The novel pneumatic diaphragm actuating mechanism is characterized in that the upper diaphragm cover (1) is connected with a press plate by the aid of springs, the diaphragm (2) contacts with the other side of the press plate, and the sealing position on the edge of the upper diaphragm cover (1) or the lower diaphragm cover (3) is provided with a boss so that exposure of the diaphragm (2) out of the diaphragm covers after sealing is avoided. The novel pneumatic diaphragm actuating mechanism is capable of improving the control performance of the pneumatic diaphragm control valve, so that the shortcoming of gas leakage of the actuating mechanism during production of petroleum, chemical industry, smelting and the like is greatly overcome, valve control failure rate is decreased and safety accidents are avoided. In addition, the push rod in the novel pneumatic diaphragm actuating mechanism has a self-lubricating function so that sealing performance is improved.
Description
Technical field
The utility model relates to a kind of pneumatic diaphragm control valve actuator of regulating and controlling valve opening, especially novel pneumatic diaphragm actuator.
Background technique
In industrial process control, pneumatic diaphragm control valve because simple in structure, easy to operate, use characteristics such as reliable, fire-proof and explosion-proof, be widely used in the valve control device in the production processes such as oil, chemical industry, smelting.And encircle as important one of regulating system, the quality of its working state will directly influence control procedure.Its working principle is as follows, in the signal pressure input film air chamber of giving certain limit, when producing thrust produces putter component moves, spring is compressed generation reaction force and signal pressure on film thrust and balancing each other, modulating valve just rests on the given position.Moving of push rod promptly is the stroke of pneumatic diaphragn actuating mechanism.Action mode is divided into: the positive interaction formula: when the signal pressure of film air chamber was zero, putter component was positioned at the below, when in the film air chamber during input signal pressure, putter component was moved down; Reaction-type: when the signal pressure of film air chamber was zero, putter component was positioned at the top, when in the film air chamber during input signal pressure, putter component was moved up.
There is following defective in traditional pneumatic diaphragn actuating mechanism: the sealing of " O " type circle, and oil-free lubrication, easy aged deterioration, the push rod guiding clearance enters dust granules easily, makes that " O " type circle damages, the push rod surface tear.Cause gas leakage, pneumatic diaphragn actuating mechanism function out of hand; Membrane cover clamps rear film up and down, and pretightening force is big, and diaphragm static seal face has lost elasticity.Frequent pumps, and makes diaphragm produce fold easily, and distortion is damaged, causes gas leakage; Membrane cover clamping rear film exposes up and down, and is easily aging, fragile.
The model utility content
The purpose of this utility model provides a kind of film sheet and is difficult for producing fold, and is difficult for wearing out the novel pneumatic diaphragm actuator of long service life.
For achieving the above object, the technical solution adopted in the utility model is.
A kind of novel pneumatic diaphragm actuator, comprise last membrane cover that is connected and the following membrane cover that is sleeved on the push rod, and be fixed on diaphragm between membrane cover and the following membrane cover, its specialization is, the described membrane cover of going up is connected with pressing plate by spring, described diaphragm contacts with the another side of this pressing plate, avoids diaphragm to expose outside the membrane cover after sealing thereby the sealing part at last membrane cover or following membrane cover edge is provided with boss.
Wherein on the other push rod of following membrane cover special-shaped seal ring is installed, this special-shaped seal ring side has annular recess, and lubricating grease is housed in groove.
The control performance of pneumatic diaphragm control valve can improve in actuator of the present utility model, has overcome actuator's gas leak phenomenon greatly in production processes such as oil, chemical industry, smelting, has reduced valve control fault rate, has eliminated security incident.And have the push rod self-lubricating function, thereby improved sealability.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model background technique;
Accompanying drawing 2 is a structural representation of the present utility model;
Accompanying drawing 3 is the partial enlarged drawing of Fig. 2;
Accompanying drawing 4 is the structural representation of special-shaped seal ring in the utility model (4).
Embodiment
The utility model is described in more detail below in conjunction with accompanying drawing:
As Fig. 2,3, shown in 4, the utility model comprises last membrane cover 1 that is connected and the following membrane cover 3 that is sleeved on the push rod 5, and be fixed on diaphragm 2 between membrane cover 1 and the following membrane cover 3, last membrane cover 1 is connected with pressing plate by spring, diaphragm 2 contacts with the another side of this pressing plate, sealing part at last membrane cover 1 or following membrane cover 3 edges is provided with boss (as Fig. 2, shown in 3, sealing part at last membrane cover 1 and following membrane cover 3 edges is equipped with annular boss) thus after sealing, avoid diaphragm 2 to expose outside the membrane cover, be difficult for being extruded distortion when making diaphragm 2 reach static seal, plastic deformation and elasticity are not damaged yet
On the push rod 5 on following membrane cover 3 sides special-shaped seal ring 4 is installed in addition, can there be annular recess these special-shaped seal ring 4 sides, and lubricating grease is housed in groove.After assembling, special-shaped seal ring 4 extrusions, the lubricating grease in the groove can spill on the push rod 5, effectively reduces the frictional force between push rod 5 and the special-shaped seal ring 4, has improved sealability.The profiled seal structure of this uniqueness not only seals but also can avoid dust and booty to enter the guiding clearance of push rod 5, and sealability plays a crucial role in the pneumatic diaphragn actuating mechanism reaction-type.
Claims (2)
1. novel pneumatic diaphragm actuator, comprise the last membrane cover (1) that is connected and be sleeved on following membrane cover (3) on the push rod (5), and be fixed on diaphragm (2) between membrane cover (1) and the following membrane cover (3), it is characterized in that: the described membrane cover (1) of going up is connected with pressing plate by spring, described diaphragm (2) contacts with the another side of this pressing plate, last membrane cover (1) or down membrane cover (3) thus the sealing part at edge is provided with boss avoids diaphragm (2) to expose outside the membrane cover after sealing.
2. novel pneumatic diaphragm actuator as claimed in claim 1 is characterized in that: wherein on the other push rod (5) of following membrane cover (3) special-shaped seal ring (4) is installed, this special-shaped seal ring (4) side has annular recess, and lubricating grease is housed in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200222511U CN201925576U (en) | 2011-01-24 | 2011-01-24 | Novel pneumatic diaphragm actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200222511U CN201925576U (en) | 2011-01-24 | 2011-01-24 | Novel pneumatic diaphragm actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201925576U true CN201925576U (en) | 2011-08-10 |
Family
ID=44429423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200222511U Expired - Fee Related CN201925576U (en) | 2011-01-24 | 2011-01-24 | Novel pneumatic diaphragm actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201925576U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494168A (en) * | 2011-12-12 | 2012-06-13 | 浙江中控流体技术有限公司 | Method for regulating spring ranges of pneumatic diaphragm actuating mechanism and application thereof |
| CN103542130A (en) * | 2012-07-10 | 2014-01-29 | 上海阀门五厂有限公司 | Biological antibacterial pneumatic diaphragm valve |
| CN105443846A (en) * | 2016-01-15 | 2016-03-30 | 浙江三方控制阀股份有限公司 | Actuating mechanism with self-sealing rolling diaphragm |
| CN105563107A (en) * | 2016-01-26 | 2016-05-11 | 浙江中控流体技术有限公司 | Mounting assisting equipment of air chamber prepressing |
-
2011
- 2011-01-24 CN CN2011200222511U patent/CN201925576U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494168A (en) * | 2011-12-12 | 2012-06-13 | 浙江中控流体技术有限公司 | Method for regulating spring ranges of pneumatic diaphragm actuating mechanism and application thereof |
| CN102494168B (en) * | 2011-12-12 | 2013-08-07 | 浙江中控流体技术有限公司 | Method for regulating spring ranges of pneumatic diaphragm actuating mechanism and application thereof |
| CN103542130A (en) * | 2012-07-10 | 2014-01-29 | 上海阀门五厂有限公司 | Biological antibacterial pneumatic diaphragm valve |
| CN105443846A (en) * | 2016-01-15 | 2016-03-30 | 浙江三方控制阀股份有限公司 | Actuating mechanism with self-sealing rolling diaphragm |
| CN105563107A (en) * | 2016-01-26 | 2016-05-11 | 浙江中控流体技术有限公司 | Mounting assisting equipment of air chamber prepressing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YINCHUAN INAUTO AUTOMATION CO., LTD. Free format text: FORMER OWNER: NINGXIA INAUTO FLUID CONTROL TECHNOLOGY CO., LTD. Effective date: 20130509 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130509 Address after: 750004, No. 281 Chun Road, Xingqing Science Park, Xingqing District, the Ningxia Hui Autonomous Region, Yinchuan Patentee after: Yinchuan Inauto Automation Co., Ltd. Address before: 750004, the Ningxia Hui Autonomous Region, Yinchuan, Xingqing three ring road, Xingqing science and Technology Park, Hing Chun Road, No. 281 Patentee before: Ningxia Inauto Fluid Control Technology Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 146, Huaan street, Xixia District, Yinchuan, the Ningxia Hui Autonomous Region Patentee after: Yinchuan British controlled Limited by Share Ltd Address before: 750004, No. 281 Chun Road, Xingqing Science Park, Xingqing District, the Ningxia Hui Autonomous Region, Yinchuan Patentee before: Yinchuan Inauto Automation Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20190124 |