CN101865326A - Integrated push rod seal assembly - Google Patents
Integrated push rod seal assembly Download PDFInfo
- Publication number
- CN101865326A CN101865326A CN 201010206152 CN201010206152A CN101865326A CN 101865326 A CN101865326 A CN 101865326A CN 201010206152 CN201010206152 CN 201010206152 CN 201010206152 A CN201010206152 A CN 201010206152A CN 101865326 A CN101865326 A CN 101865326A
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- CN
- China
- Prior art keywords
- push rod
- shaft sleeve
- seal assembly
- shape circle
- axle sleeve
- 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.)
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Abstract
The invention relates to an integrated push rod seal assembly, in particular to an industrial control valve actuator seal assembly. The seal assembly comprises an inner O shape ring, a sliding bearing, a cylinder cover, an outer O shape ring, a shaft sleeve, a dust ring, a bolt, a pressure plate and a push rod; wherein the inner O shape ring, the sliding bearing and the outer O shape ring are embedded into the shaft sleeve in an integrating way, the inner O shape ring is arranged between the shaft sleeve and the push rod, thus forming a first sealing structure; the outer O shape ring is arranged between the cylinder cover and the shaft sleeve, thus forming a second sealing structure; the dust ring is arranged between the bottom of the shaft sleeve and the push rod, thus forming a third sealing structure; and the pressure plate compactly compresses the shaft sleeve, and the bolt is used for fixing the pressure plate on the cylinder cover. The invention is provided with a secure sealing guide structure, thus being convenient for maintenance; unstable guiding and air leakage phenomena of valve actuator in operation process can be effectively reduced, the performance of valve actuator can be ensured to be stable, equipment is ensured to operate safely and smoothly, and production efficiency is improved.
Description
Technical field
The present invention relates to a kind of integrated push rod seal assembly, specifically a kind of industrial control valve actuator black box.
Background technique
Along with economic development, the industrial automation controlling level is in continuous improve, thus to the requirement of the reliability of modulating valve in the process control also in continuous raising.This just also has higher requirement to valve actuator.In prior art, existing pneumatic valve final controlling element push rod seal place generally adopts the fluorine rubber guiding to add O shape and encloses built-in sealing configuration, and fluorine rubber is easily aging, and guide effect is not good, and this structure O shape circle is changed difficulty, thereby valve is broken down.Even cause complete equipment to be stopped transport, cause the tremendous economic loss.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, thereby provide a kind of its to have the reliable sealing guide structure, be convenient to keep in repair, change the valve actuator black box of quick-wear part, can effectively reduce valve actuator in running, occur guiding not steadily, gas leak phenomenon, guarantee the stable performance of valve actuator, guarantee that apparatus moves safely and smoothly, enhance productivity.
According to technological scheme provided by the invention, integrated push rod seal assembly comprises interior O shape circle, sliding bearing, cylinder cap, outer O shape circle, axle sleeve, dust ring, screw, pressing plate and push rod, O shape circle, sliding bearing, outer O shape circle embed in the axle sleeve in integrated mode in described, O shape circle is installed between axle sleeve and the push rod in described, forms first seal structures; Outer O shape circle is installed between cylinder cap and the axle sleeve, forms second seal structures; Described dust ring is installed between axle sleeve bottom and the push rod, forms three seal structures; Compress axle sleeve by pressing plate, pressing plate is fixed on the cylinder cap with screw.
Compared with the prior art the present invention has the following advantages:
1, owing to adopt the composite material sliding bearing guiding can effectively prevent the throw-out lever tilt phenomenon, the final controlling element degree of regulation improves 30%;
2, owing to adopt external seal with O ring structure, be convenient to the on-the-spot O of replacing type circle, solved built-in O type circle sealing configuration and changed consuming time, a consumption power difficult problem;
3, the sealing configuration of this valve actuator black box is safe and reliable, favorable sealing property, and accident rate reduces by 80%;
4, this valve actuator sealing structure assembly is simple and reliable, easy to maintenance.
Description of drawings
Fig. 1 is structure user mode figure of the present invention.
Fig. 2 is an integrated push rod seal assembly structural representation of the present invention.
Embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
As shown in Figure 2, integrated push rod seal assembly is made of interior O shape circle 1, sliding bearing 2, cylinder cap 3, outer O shape circle 4, axle sleeve 5, dust ring 6, screw 7, pressing plate 8 and push rod 9 parts.
The interior O shape circle 1 of sealing assembly, sliding bearing 2, outer O shape circle 4 are embedded in the axle sleeve 5 in integrated mode, and integral installation is fitted in the cylinder cap 3, and dust ring 6 is installed, and compresses axle sleeve 5 by pressing plate 8, utilizes screw 7 that pressing plate 8 is fixed on the cylinder cap 3,
Sealing assembly sealing system is by interior O shape circle 1, outer O shape circle 4 and the assembling of dust ring 6 three seal structures.Wherein interior O shape circle 1 is installed between axle sleeve 5 and the push rod 9, is first seal structures of sealing assembly.Outer O shape circle 4 is installed between cylinder cap 3 and the axle sleeve 5, is second seal structures, and the main effect of dust ring 6 is to prevent that external dust or foreign material from entering sliding bearing 2 inside, and the wearing and tearing push rod causes seal failure, also plays the effect of three seals simultaneously.
The guide elements sliding bearing 2 of sealing assembly is made up of composite material, with the cemented carbide thin plate is matrix, the outside adheres to one deck tin bronze, and its internal surface rolling one deck FDB organic substance and lead mixture have substituted the traditional guide elements based on copper material, it is little that this sliding bearing has a friction factor, wear-resisting corrosion resistance is superior, and advantages such as oil-free lubrication play accurate leading role, can effectively improve push rod working life, reduce maintenance cost.
The sealing assembly is when changing fragile part, simply, quick and easy, need not other component of dismounting final controlling element, unclamp housing screw 7, directly O shape circle 1, sliding bearing 2, outer O shape circle 4, axle sleeve 5 are split out in the mode of integral body, pack in the cylinder cap 3 in the mode of integral body again after changing, time saving and energy saving.
Working principle of the present invention:
The present invention adopts sliding bearing 2 to do accurate guiding, and inside and outside O shape circle is done effective sealing, and push rod 9 pumps, and realizes open and close, the adjusting action of valve.
The present invention as seal element, by the thrust that source of the gas produced, realizes moving up and down of push rod with O shape circle, to the action generation driving action of valve.
Claims (2)
1. integrated push rod seal assembly, comprise cylinder cap (3), O shape circle (1), sliding bearing (2), outer O shape circle (4), axle sleeve (5), dust ring (6), screw (7), pressing plate (8) and push rod (9) in it is characterized in that: further comprising, described O shape circle (1), sliding bearing (2), outer O shape circle (4), dust ring (6) embed in the axle sleeve (5), O shape circle (1) is installed between axle sleeve (5) and the push rod (9) in described, forms first seal structures; Outer O shape circle (4) is installed between cylinder cap (3) and the axle sleeve (5), forms second seal structures; Described dust ring (6) is installed between axle sleeve (5) bottom and the push rod (9), forms three seal structures; Compress axle sleeve (5) by pressing plate (8), pressing plate (8) is fixed on the cylinder cap (3) with screw (7).
2. integrated push rod seal assembly as claimed in claim 1 is characterized in that described sliding bearing (2) is made up of composite material, is matrix with the cemented carbide thin plate, and the outside adheres to one deck tin bronze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010206152 CN101865326A (en) | 2010-06-13 | 2010-06-13 | Integrated push rod seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010206152 CN101865326A (en) | 2010-06-13 | 2010-06-13 | Integrated push rod seal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101865326A true CN101865326A (en) | 2010-10-20 |
Family
ID=42957162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010206152 Pending CN101865326A (en) | 2010-06-13 | 2010-06-13 | Integrated push rod seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101865326A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020170426A1 (en) * | 2001-05-16 | 2002-11-21 | Braatz James D. | Pneumatic cylinder for railroad track switch operator |
| CN101092991A (en) * | 2007-07-19 | 2007-12-26 | 北京科技大学 | Integral gradient self-lubricating bearing, and fabricating method |
| CN101479498A (en) * | 2006-07-12 | 2009-07-08 | 帕斯卡工程株式会社 | Lubrication structure for gas spring |
| CN201301842Y (en) * | 2008-10-17 | 2009-09-02 | 云南兴长江实业有限公司 | Split head hydraulic cylinder |
| CN201705943U (en) * | 2010-06-13 | 2011-01-12 | 无锡智能自控工程有限公司 | Integrated push rod sealing assembly |
-
2010
- 2010-06-13 CN CN 201010206152 patent/CN101865326A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020170426A1 (en) * | 2001-05-16 | 2002-11-21 | Braatz James D. | Pneumatic cylinder for railroad track switch operator |
| CN101479498A (en) * | 2006-07-12 | 2009-07-08 | 帕斯卡工程株式会社 | Lubrication structure for gas spring |
| CN101092991A (en) * | 2007-07-19 | 2007-12-26 | 北京科技大学 | Integral gradient self-lubricating bearing, and fabricating method |
| CN201301842Y (en) * | 2008-10-17 | 2009-09-02 | 云南兴长江实业有限公司 | Split head hydraulic cylinder |
| CN201705943U (en) * | 2010-06-13 | 2011-01-12 | 无锡智能自控工程有限公司 | Integrated push rod sealing assembly |
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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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20101020 |