CN201348070Y - Actuator for pneumatic diaphragm control valve - Google Patents
Actuator for pneumatic diaphragm control valve Download PDFInfo
- Publication number
- CN201348070Y CN201348070Y CNU200920112202XU CN200920112202U CN201348070Y CN 201348070 Y CN201348070 Y CN 201348070Y CN U200920112202X U CNU200920112202X U CN U200920112202XU CN 200920112202 U CN200920112202 U CN 200920112202U CN 201348070 Y CN201348070 Y CN 201348070Y
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- China
- Prior art keywords
- diaphragm
- membrane cover
- push
- rod
- hole
- 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.)
- Expired - Fee Related
Links
- 239000012528 membrane Substances 0.000 claims description 47
- 210000004907 gland Anatomy 0.000 claims description 19
- 238000012856 packing Methods 0.000 claims description 18
- 210000004712 air sac Anatomy 0.000 claims description 9
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 241000628997 Flos Species 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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Abstract
An actuator for pneumatic diaphragm control valve mainly comprises a pneumatic diaphragm mechanism consisting of an upper diaphragm cover, a lower diaphragm cover, an intermediate diaphragm, a spring, and a lower bracket mechanism connected therewith, wherein a push rod capable of sliding up and down is axially arranged in the middle of a bracket of the bracket mechanism; the upper end of the push rod is connected with a tray fixedly connected with the diaphragm through a fixing device after passing through a push rod hole formed on the lower diaphragm cover; a pull-push screw having a hole and communicated with the air chamber of the diaphragm is arranged on the front side of the lower diaphragm cover; an air interface corresponding to the hole of the pull-push screw is formed on the bracket; an air path communicated with the air interface is arranged inside the bracket; and an outer gas interface connected with an air source of an external valve locator is formed on the side part of the bracket. The actuator for the pneumatic diaphragm control valve has the advantages of simple structure, convenient installation and use, high shock resistance, good stability, less material consumption, high control accuracy, etc.
Description
Technical field
The utility model relates to a kind of special supporting actuator that modulating valve automatically adjusts that is used for, mechanism is carried out in the automatic adjusting that belongs to a kind of valve.
Background technique
Pneumatic diaphragm control valve is a kind of regulating controller in the pneumatic unit combination instrument, be to produce to carry out one of important step in the process automatic regulating system, it is accepted the output signal of regulation meter and closes and Open valve, reach the isoparametric automatic adjusting of pressure, temperature, flow and liquid level, can be widely used in the automatic adjusting and the telecontrol of chemical industry, oil, metallurgy, electric power, light textile industry.Pneumatic diaphragm control valve commonly used at present mainly is made up of valve mechanism and actuator, and the push rod that links to each other by the centre connects between the two.Described actuator is by last membrane cover, down the support that links to each other of membrane cover, middle diaphragm, spring and bottom is formed, is mounted with a slippage up and down in support, and can connects the push rod of middle diaphragm of actuator and valve mechanism valve rod; Film chamber in the described actuator is communicated with the external control source of the gas, behind signal pressure input film chamber, on diaphragm, produce thrust, pressure spring, push rod is moved, and push rod drives the valve rod that links to each other, and changes the Flow area between spool and the valve seat, reach the reaction force of spring and thrust that signal pressure acts on the diaphragm and balance each other, thereby reach the purpose of automatic adjusting process parameter.But the external control source of the gas of actuator's employing at present provides by external pipeline, this makes and bring very big inconvenience in installation, transportation process, and in actual use, exist this shock resistance poor, aspects such as the stability of use and degree of regulation existing problems.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of above-mentioned existence, and provides a kind of simple in structure, and is easy to install, anti-seismic performance, good stability, economical with materials, the actuator of the pneumatic diaphragm control valve that degree of regulation is high.
The purpose of this utility model is finished by following technical solution, it mainly comprises the air bladder mechanism that is made up of up and down membrane cover, middle diaphragm, spring, and continuous bracket institution two-part in bottom, the support jack shaft of described bracket institution is to being provided with the push rod of slippage up and down, the upper end of push rod can be stretched in the middle of the membrane cover up and down in air bladder mechanism, and described push rod upper end portion covers the push-rod hole of offering from lower film and stretches into the pallet that the back is connected with fixing device and diaphragm and link to each other; Membrane cover front, described bottom is provided with the pressure screw that is communicated with diaphragm chamber with holes, hole corresponding to described pressure screw, be provided with corresponding air-flow interface on support top, and be provided with the air-flow path that is communicated in this air-flow interface, and be provided with the air-flow external tapping that joins with external valve positioning work piece source of the gas in stent side portion at described internal stent.
Described fixing device comprises and is arranged on the diaphragm packing ring that is positioned at the membrane cover side on the pallet, one is positioned at the stuffing box gland of membrane cover push-rod hole inboard down, and be nested with the pushing rod sleeve that in described stuffing box gland intermediate hole, is connected between the pallet, push rod stretches into from the push-rod hole of following membrane cover, through stuffing box gland, pushing rod sleeve, and stretch out from pallet, diaphragm packing ring, the end is fastening with packing ring and nut; The pressure screw endoporus of described down membrane cover is communicated in diaphragm chamber by the flow channel that is provided with and by center flow channels is set on the push rod in stuffing box gland.
Described fixing device comprises and is arranged on the diaphragm packing ring that is positioned at the membrane cover side on the pallet, one is positioned at the stuffing box gland of membrane cover push-rod hole inboard down, and be nested with the pushing rod sleeve that in described stuffing box gland intermediate hole, is connected between the pallet, push rod stretches into from the push-rod hole of last membrane cover, behind diaphragm packing ring, pallet, pushing rod sleeve and stuffing box gland, stretch out, the end is fastening with packing ring and nut, and the described pressure screw endoporus that is arranged on the membrane cover directly is communicated with diaphragm chamber.
The push-rod hole of described up and down membrane cover is provided with internal thread, a film head locknut that can upwards spin from lower bracket and that top air bladder mechanism and lower bracket mechanism are linked together.
Form diaphragm chamber between the diaphragm of described upward membrane cover and centre, and between the diaphragm of following membrane cover and centre spring is installed, and constituting described spring housing, this spring housing joins by adapter by the flow passage that is provided with in the valve rod and the operation gas floss hole of valve positioner.
The utility model belongs to a kind of improvement to prior art, and it has simple in structure, and is easy to install, anti-seismic performance, good stability, economical with materials, characteristics such as degree of regulation height.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a spring housing of the present utility model gas source interface connection diagram.
Fig. 3 is the structural representation of other direction combination of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done detailed introduction: shown in the accompanying drawing 1, the utility model mainly comprises by last, following membrane cover 1,2, middle diaphragm 3, the air bladder mechanism that spring 4 is formed, be referred to as the film head again, and continuous bracket institution two-part in bottom, support 5 jack shafts of described bracket institution are to being provided with the push rod 6 of slippage up and down, the membrane cover up and down 1 in air bladder mechanism can be stretched in the upper end of push rod 6, in the middle of 2, described membrane cover 1 up and down, 2 centre offers the push-rod hole 7 of perforation, 8, and make described push rod 6 upper end portions stretch into the pallet 9 that is connected with fixing device and diaphragm 3 of back from arbitrary push-rod hole to link to each other.
Described fixing device comprises and is arranged on the diaphragm packing ring 10 that is positioned at membrane cover 1 side on the pallet 9, one is positioned at the stuffing box gland 11 of membrane cover 2 push-rod hole inboards down, and be nested with the pushing rod sleeve 12 that in described stuffing box gland 11 intermediate holes, is connected between the pallet 9, push rod 6 stretches into from the push-rod hole 8 of following membrane cover 2, through stuffing box gland 11, pushing rod sleeve 12, and stretch out from pallet 9, diaphragm packing ring 10, the end is fastening with packing ring 13 and nut 14.Dispose membrane cover plug 20 on the push-rod hole in the middle of the last membrane cover 1 shown in Fig. 1, dispose acorn nut 22 on the bleed screw 21 that is provided with on the limit.
Described support 5 tops be provided with following membrane cover 2 on the setting pressure screw with holes 23 corresponding air-flow interfaces 24, be provided with the air-flow path 25 that is communicated in this air-flow interface 24 in support 5 inside, and be provided with air-flow external tapping 26 at support 5 sidepieces, be communicated with the control source of the gas of external valve positioning work piece by this external tapping.Described pressure screw 23 with holes is communicated in diaphragm chamber 17 by the flow channel 27 of setting in stuffing box gland 11 and by center flow channels is set on the push rod 6 again.Because the connection of pipe air-flow path can be that valve integral body has good seismic resistance in adopting, and has improved the stability and the degree of regulation of product.
The push- rod hole 7,8 of described up and down membrane cover 1,2 is provided with can be from lower bracket 5 that upwards spin and that top air bladder mechanism and lower bracket mechanism the are linked together film head locknut 16 of internal thread 15.
Described going up forms diaphragm chamber 17 between membrane cover 1 and the middle diaphragm 3, and between following membrane cover 2 and the middle diaphragm 3 spring 4 is installed, and constitute described spring housing 18, this spring housing 18 joins by taking over 19 by the flow passage of setting in the push rod 6 and the operation gas floss hole of electropneumatic valve positioner, make the pressure that produces in the spring housing 18 a little more than external pressure, in order to avoid mordant gas in the external environment condition, be inhaled into spring housing such as marine air, parts such as corrosion spring, thereby improve working life, see shown in the accompanying drawing 2.
Shown in the accompanying drawing 3, when needs realize that the forward and reverse effect of valve is changed, as long as described dust-proof cover 28, membrane cover plug 20, acorn nut 22 are unloaded, again film head locknut 16 is unclamped, nut 14, packing ring 13 are unloaded, 180 degree upsets about the film head are exchanged, then the push-rod hole 7 of push rod 6 from last membrane cover 1 stretched into, behind diaphragm packing ring 10, pallet 9, pushing rod sleeve 12 and stuffing box gland 11, stretch out, the end is fastening with packing ring 13 and nut 14, and the push-rod hole of offering on film head locknut 16 and the last membrane cover 17 is spun gets final product again.The described pressure screw endoporus that is arranged on the membrane cover 1 directly is communicated with diaphragm chamber 17.
Claims (5)
1, a kind of actuator of pneumatic diaphragm control valve, it mainly comprises the air bladder mechanism that is made up of up and down membrane cover, middle diaphragm, spring, and continuous bracket institution two-part in bottom, the support of described bracket institution (5) jack shaft is to being provided with the push rod (6) of slippage up and down, the membrane cover up and down (1,2) that the upper end of push rod (6) can be stretched in air bladder mechanism is middle, and the pallet (9) that is connected with fixing device and diaphragm (3) after the push-rod hole (8) that described push rod (6) upper end portion is offered from following membrane cover (2) stretches into links to each other; It is characterized in that described membrane cover (2) front down is provided with the pressure screw (23) that is communicated with diaphragm chamber (17) with holes, hole corresponding to described pressure screw (23), be provided with corresponding air-flow interface (24) on support (5) top, and be provided with the air-flow path (25) that is communicated in this air-flow interface (24) in described support (5) inside, and be provided with the air-flow external tapping (26) that joins with external valve positioning work piece source of the gas in stent side portion.
2, the actuator of pneumatic diaphragm control valve according to claim 1, it is characterized in that described fixing device comprises is arranged on the diaphragm packing ring (10) that is positioned at the membrane cover side on the pallet (9), one is positioned at the inboard stuffing box gland (11) of membrane cover push-rod hole (8) down, and be nested with the pushing rod sleeve (12) that in described stuffing box gland (11) intermediate hole, is connected between the pallet (9), push rod (6) stretches into from the push-rod hole (8) of following membrane cover (2), through stuffing box gland (11), pushing rod sleeve (12), and from pallet (9), diaphragm packing ring (10) stretches out, and the end is fastening with packing ring (13) and nut (14); Pressure screw (23) endoporus of described membrane cover (2) down also is communicated in diaphragm chamber (17) by center flow channels is set on the push rod (6) by the flow channel (27) that is provided with in stuffing box gland (11).
3, the actuator of pneumatic diaphragm control valve according to claim 1, it is characterized in that described fixing device comprises is arranged on the diaphragm packing ring (10) that is positioned at membrane cover (1) side on the pallet (9), one is positioned at the inboard stuffing box gland (11) of membrane cover push-rod hole (8) down, and be nested with the pushing rod sleeve (12) that in described stuffing box gland (11) intermediate hole, is connected between the pallet (9), push rod (12) stretches into from the push-rod hole (7) of last membrane cover (1), through diaphragm packing ring (10), pallet (9), stretch out behind pushing rod sleeve (12) and the stuffing box gland (11), the end is fastening with packing ring (13) and nut (14), and described pressure screw (21) endoporus that is arranged on the membrane cover (1) directly is communicated with diaphragm chamber (17).
4, according to the actuator of claim 2 or 3 described pneumatic diaphragm control valves, the push-rod hole (7,8) that it is characterized in that described up and down membrane cover (1,2) is provided with internal thread, a film head locknut (16) that can upwards spin from lower bracket (5) and that top air bladder mechanism and lower bracket mechanism are linked together.
5, the actuator of pneumatic diaphragm control valve according to claim 4, it is characterized in that forming diaphragm chamber (17) between the described diaphragm (3) of going up membrane cover (1) and centre, and between the diaphragm (3) of following membrane cover (2) and centre spring (4) is installed, and constituting described spring housing (18), this spring housing (18) joins by taking over (19) by the flow passage of setting in the valve rod (6) and the operation gas floss hole of valve positioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920112202XU CN201348070Y (en) | 2009-01-05 | 2009-01-05 | Actuator for pneumatic diaphragm control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920112202XU CN201348070Y (en) | 2009-01-05 | 2009-01-05 | Actuator for pneumatic diaphragm control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201348070Y true CN201348070Y (en) | 2009-11-18 |
Family
ID=41367538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920112202XU Expired - Fee Related CN201348070Y (en) | 2009-01-05 | 2009-01-05 | Actuator for pneumatic diaphragm control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201348070Y (en) |
Cited By (3)
| 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 |
| CN104913101A (en) * | 2014-02-25 | 2015-09-16 | 费希尔控制国际公司 | Actuator apparatus with internal tubing and anti-rotation mechanism |
| CN111721524A (en) * | 2020-06-04 | 2020-09-29 | 肯卓自控工程(江苏)有限公司 | Execution driving type valve pressure test table |
-
2009
- 2009-01-05 CN CNU200920112202XU patent/CN201348070Y/en not_active Expired - Fee Related
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 |
| 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 |
| CN104913101A (en) * | 2014-02-25 | 2015-09-16 | 费希尔控制国际公司 | Actuator apparatus with internal tubing and anti-rotation mechanism |
| CN111721524A (en) * | 2020-06-04 | 2020-09-29 | 肯卓自控工程(江苏)有限公司 | Execution driving type valve pressure test table |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG YONGSHENG TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHEJIANG YSMETER CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 311407 deer mountain industrial zone, Zhejiang, Fuyang Patentee after: ZHEJIANG YONGSHENG TECHNOLOGY CO., LTD. Address before: 311402 deer mountain industrial zone, Zhejiang, Fuyang Patentee before: ZHEJIANG YONGSHENG INSTRUMENTATION CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091118 Termination date: 20160105 |