CN201093067Y - Piston rod sealing element - Google Patents

Piston rod sealing element Download PDF

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Publication number
CN201093067Y
CN201093067Y CNU2007201021655U CN200720102165U CN201093067Y CN 201093067 Y CN201093067 Y CN 201093067Y CN U2007201021655 U CNU2007201021655 U CN U2007201021655U CN 200720102165 U CN200720102165 U CN 200720102165U CN 201093067 Y CN201093067 Y CN 201093067Y
Authority
CN
China
Prior art keywords
sealing
utility
model
piston
guide ring
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
Application number
CNU2007201021655U
Other languages
Chinese (zh)
Inventor
王金平
贾宪宝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanxi Taibao Sealing Co., Ltd.
Original Assignee
王金平
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 王金平 filed Critical 王金平
Priority to CNU2007201021655U priority Critical patent/CN201093067Y/en
Application granted granted Critical
Publication of CN201093067Y publication Critical patent/CN201093067Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model particularly relates to a piston sealing element for fluid-pressure alternating motion, which belongs to the technical field of fluid pressure and air-operated sealing elements. The utility model solves the problems of structural design of the piston rod sealing element, complementarity of sealing materials, high temperature resistance, short service life and liquid leakage and the like in the prior art. The utility model relates to a piston rod packing element, which comprises an elastic body and an L-shaped guide ring. The elastic body is a rubber drum-type sealing lining whose both ends are provided with steps which are engaged with the L-shaped guide ring, and the outer side is provided with a polyurethane outer casing, the matching surface of the drum-shaped sealing lining and the polyurethane outer casing is arc shaped, and the outer side of the polyurethane outer casing is provided with three flanges. The utility model has the advantages that the utility adopts special sealing material and geometric shape, which has the advantages of compact structure, excellent integral stability, abrasion and sealing property, low friction, excellent decompression resistance capability, anti-collapse property and abrasion resistance. The piston sealing element is a heavy-load bidirectional piston sealing ring, which is particularly suitable for high pressure, and is generally used on mining industry.

Description

A kind of piston seal
Technical field
The utility model belongs to hydraulic pressure, pneumatic seal technical field, is specifically related to a kind of hydraulic reciprocating movement usefulness, is suitable for the supporting Sealing of hydraulic cylinder piston (TK222BW).
Background technique
The common structure of existing piston Sealing comprises elastomer, guide ring, and its major defect is that structure is single, the elastomer material is single, sliding-frictional resistance is big, working life problem such as low, high pressure resistant, poor sealing performance.
Summary of the invention
The utility model is for problems such as the structural design that solves piston seal in the prior art, sealing material complementarity, high pressure resistant, working life weak point, leakages, provide a kind of under high pressure and low pressure operating mode the heavy duty sealing and the piston seal of usefulness, such closure size is stablized, is met tolerance, compact structure, resists and extrude damage, wear-resistant, under load, has very high pressure stability, high axially locating performance, extraordinary anti-extrude reliability, high abrasion, low friction, no stick-slip phenomenon, anti-extrusion performance are splendid.
The utility model adopts following technological scheme to realize: a kind of piston seal, comprise elastomer, L shaped guide ring, it is characterized in that described elastomer is a rubber cydariform sealed liner, the ladder that cooperates with L shaped guide ring is established at its two ends, the outside is provided with the polyurethane overcoat, and the fitting surface of cydariform sealed liner and polyurethane overcoat is an arc, and the outside sealing surface of polyurethane overcoat is provided with three road flanges.
Main improvement of the present utility model is that all parts adopt unique turning process to guarantee the precision and the whole sealing effect of product.Sealing surface adopts the design of two-way oblique flange to reduce friction ractor; Elastomer adopts the rubber drum RunddichtringO liner of two ends band ladder, and the inboard has the twice groove fully to contact with cylinder body; The sealing distortion constitutes the characteristic that piston seal has made full use of each parts institute tool with upper-part when utilizing L type guide ring to prevent high pressure, can resist very high fluid pressure, and have the very long life-span.Adopt the utility model seal ring to improve the anti-side pressure and the wear resistance of sealing, can bear the sealing medium (liquid, gas) of high pressure for a long time, stop its sealing medium to leak out Seal cage, avoid the friction of high pressure lower seal and cylinder body to produce heating and wearing and tearing, and, high pressure makes seal failure because of causing lip to turn up, install simple and convenient, the operating life that has prolonged seal ring.
The relative prior art of the utility model has following beneficial effect: adopted unique sealing material and geometrical shape, compact structure, general stability, wear-resisting, good seal performance, low friction, have good anti-pressure release ability, anti-extruding and wear-resisting property, it is a kind of heavily loaded bidirectional piston seal ring under the high pressure operating mode of extensive use, especially be fit to high pressure, be used for mine industry more.Alternative existing folder cloth piston seal under the situation that does not change existing groove has changed the boundary that in the past seals GB and nonstandard size simultaneously, adapts to the design of various grooves.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Among the figure: 1-polyurethane overcoat, 2-cydariform sealed liner, 3-L shape guide ring, 4-flange
Embodiment
In conjunction with the accompanying drawings embodiment of the present utility model is described further, embodiment is used for illustrating of the present utility model, rather than it is imposed any restrictions.
Piston seal comprises elastomer, L shaped guide ring 3.Elastomer is a rubber cydariform sealed liner 2, and the ladder that cooperates with L shaped guide ring 3 is established at its two ends, and the outside is provided with polyurethane overcoat 1, and cydariform sealed liner 2 is an arc with the fitting surface of polyurethane overcoat 1, and the outside sealing surface of polyurethane overcoat 1 is provided with three road flanges.
Outer diameter of the present utility model is 50 to 600 millimeters, and inner diameter is 30 to 570 millimeters, has anti-high pressure, high abrasion, and advantage of good sealing effect is used for mine industry more.Alternative existing folder cloth piston seal under the situation that does not change existing groove has changed the boundary that in the past seals GB and nonstandard size simultaneously.
Main duty parameter of the present utility model is as follows:
The main application: be used for shoring, standard cylinder and cylinder
Advantage: superior static state and dynamic seal (packing)
Working pressure :≤70Mpa
Movement velocity :≤0.5m/sec
Operating temperature :-30 ℃+100 ℃
Working medium: hydraulic oil, emulsified liquid, water.

Claims (2)

1. piston seal, comprise elastomer, L shaped guide ring (3), it is characterized in that described elastomer is a rubber cydariform sealed liner (2), the ladder that cooperates with L shaped guide ring (3) is established at its two ends, the outside is provided with polyurethane overcoat (1), and cydariform sealed liner (2) is an arc with the fitting surface of polyurethane overcoat (1), and the outside sealing surface of polyurethane overcoat (1) is provided with flange (4).
2. a kind of piston seal according to claim 1 is characterized in that the outside sealing surface of described polyurethane overcoat (1) is provided with three road flanges (4).
CNU2007201021655U 2007-08-03 2007-08-03 Piston rod sealing element Expired - Fee Related CN201093067Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201021655U CN201093067Y (en) 2007-08-03 2007-08-03 Piston rod sealing element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201021655U CN201093067Y (en) 2007-08-03 2007-08-03 Piston rod sealing element

Publications (1)

Publication Number Publication Date
CN201093067Y true CN201093067Y (en) 2008-07-30

Family

ID=39901034

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201021655U Expired - Fee Related CN201093067Y (en) 2007-08-03 2007-08-03 Piston rod sealing element

Country Status (1)

Country Link
CN (1) CN201093067Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102269264A (en) * 2011-05-09 2011-12-07 清华大学 Hydraulic shift oil cylinder for manual transmission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102269264A (en) * 2011-05-09 2011-12-07 清华大学 Hydraulic shift oil cylinder for manual transmission

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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: SHANXI TAIBAO SEAL CO., LTD.

Free format text: FORMER OWNER: WANG JINPING

Effective date: 20101019

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 034100 NO.1115, YONGKANG SOUTH ROAD, YUANPING CITY, SHANXI PROVINCE TO: 034100 LUNENG AVENUE (WEST), YUANPING CITY, SHANXI PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20101019

Address after: 034100 Luneng Road West, Shanxi, Yuanping

Patentee after: Shanxi Taibao Sealing Co., Ltd.

Address before: 034100 No. 1115 South Yongkang Road, Shanxi, Yuanping

Patentee before: Wang Jinping

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080730

Termination date: 20160803

CF01 Termination of patent right due to non-payment of annual fee