CN204253849U - A kind of combined seal ring - Google Patents

A kind of combined seal ring Download PDF

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Publication number
CN204253849U
CN204253849U CN201420721603.6U CN201420721603U CN204253849U CN 204253849 U CN204253849 U CN 204253849U CN 201420721603 U CN201420721603 U CN 201420721603U CN 204253849 U CN204253849 U CN 204253849U
Authority
CN
China
Prior art keywords
elastomer
ring
supporting ring
combined seal
seal 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
CN201420721603.6U
Other languages
Chinese (zh)
Inventor
尤健清
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.)
TAICANG MINGYU SEAL CO Ltd
Original Assignee
TAICANG MINGYU SEAL CO Ltd
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 TAICANG MINGYU SEAL CO Ltd filed Critical TAICANG MINGYU SEAL CO Ltd
Priority to CN201420721603.6U priority Critical patent/CN204253849U/en
Application granted granted Critical
Publication of CN204253849U publication Critical patent/CN204253849U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a kind of combined seal ring, comprise the guide ring outside the elastomer of centre, the supporting ring of elastomer both sides and supporting ring, described elastomer top is provided with three protruding seal lips, described elastomeric outside is provided with first step and second step from top to bottom successively, the shape of the inner side of described supporting ring and the form fit in described elastomeric outside.The utility model passes through at elastomeric arranged outside first step and second step, make supporting ring be mated, wrap two steps, thus effectively prevent elastomer from extruding from gap, the allowable stress of whole combined seal ring increases by 20%, extends working life simultaneously.

Description

A kind of combined seal ring
Technical field
The utility model relates to Sealing field, particularly a kind of combined seal ring for hydraulic cylinder sealing.
Background technique
Hydraulic cylinder sealing is arranged on oil hydraulic pump and oil hydraulic motor axle, prevents working medium from leaking into outside housing along axle and oppositely invades internal body with outside dust.Existing a kind of oil hydraulic cylinder class combined seal ring, its structure as shown in Figure 1, comprise the guide ring 3 outside the elastomer 1 of centre, the supporting ring 2 of elastomer 1 both sides and supporting ring 2, described elastomer 1 top is provided with three protruding seal lips 4, seal, the both sides of described elastomer 1 are respectively equipped with a step 5, corresponding, the shape of supporting ring 2 and step 5 form fit, the two coordinates spacing, and this combined seal ring is withstand voltage, and degree is lower, and working life is short, elastomer 1 and supporting ring 2 easily misplace, and then affect sealing effect.
Model utility content
The utility model provides a kind of combined seal ring, to solve the problems of the technologies described above.
For solving the problems of the technologies described above, the utility model provides a kind of combined seal ring, comprise the guide ring outside the elastomer of centre, the supporting ring of elastomer both sides and supporting ring, described elastomer top is provided with three protruding seal lips, described elastomeric outside is provided with first step and second step from top to bottom successively, the shape of the inner side of described supporting ring and the form fit in described elastomeric outside.
Preferably, on described elastomer, the outer side of the seal lip of both sides is vertical plane, and fits in the inner side of described vertical plane and described supporting ring.
Preferably, described first step is right angle step, and described second step is wedge angle step outwardly.
Preferably, described wedge angle step comprises two faces, the first surface of level and second of inclination, and described first surface and the second face are combined to form wedge angle outwardly.
Preferably, the hardness of described elastomer, supporting ring and guide ring increases successively.
Preferably, described elastomer adopts nitrile rubber material to make.
Preferably, the both sides up and down of described guide ring all have some axial grooves.
Compared with prior art, the combined seal ring that the utility model provides, comprise the guide ring outside the elastomer of centre, the supporting ring of elastomer both sides and supporting ring, described elastomer top is provided with three protruding seal lips, described elastomeric outside is provided with first step and second step from top to bottom successively, the shape of the inner side of described supporting ring and the form fit in described elastomeric outside.The utility model passes through at elastomeric arranged outside first step and second step, make supporting ring be mated, wrap two steps, thus effectively prevent elastomer from extruding from gap, the allowable stress of whole combined seal ring increases by 20%, extends working life simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing combined seal ring;
Fig. 2 is the structural representation of the combined seal ring of the utility model one embodiment.
In Fig. 1: 1-elastomer, 2-supporting ring, 3-guide ring, 4-seal lip, 5-step;
In Fig. 2: 10-elastomer, 20-supporting ring, 30-guide ring, 40-seal lip, 41-vertical plane, 50-first step, 60-second step, 61-first surface, 62-second.
Embodiment
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in detail embodiment of the present utility model below in conjunction with accompanying drawing.It should be noted that, the utility model accompanying drawing all adopts the form of simplification and all uses non-ratio accurately, only in order to object that is convenient, aid illustration the utility model embodiment lucidly.
The combined seal ring that the utility model provides, as shown in Figure 2, comprise middle elastomer 10, guide ring 30 outside the supporting ring 20 of elastomer 10 both sides and supporting ring 20, described elastomer 10 top is provided with three protruding seal lips 40, the described upside of three seal lips 40 and the casing wall of oil hydraulic cylinder are close to, realize motive sealing, particularly, be positioned at middle seal lip 40 thicker, play main seal effect, the seal lip 40 of both sides plays auxiliary seal effect, be close to bottom the downside of described seal lip 40 and piston channel, realize static seal, surface of contact is relatively large, good sealing effect, in addition, the both sides up and down of described guide ring 30 all have some axial groove (not shown)s, make pressure oil can flow through guide ring 30, thus make elastomer 10 experience whole working pressure and when changing direction quick release pressure, this makes it possible to well to prevent produce before elastomer 10 continue ultrahigh pressure.The outside of described elastomer 10 is provided with first step 50 and second step 60 from top to bottom successively, the form fit in the shape of the inner side of described supporting ring 20 and the outside of described elastomer 10.The utility model is by the arranged outside first step 50 of elastomer 10 and second step 60, make supporting ring 20 be mated, wrap two steps, thus effectively prevent elastomer 10 from extruding from gap, the allowable stress of whole combined seal ring increases by 20%, extends working life simultaneously.
Preferably, please continue to refer to Fig. 2, on described elastomer 10, the outer side of the seal lip 40 of both sides is vertical plane 41, and described vertical plane 41 is fitted with the inner side of described supporting ring 20.Laminating type as shown in Figure 1 in prior art, does not have gap between seal lip 40 and supporting ring 20, and laminating is more tight, and sealing effect is better.
Preferably, please continue to refer to Fig. 2, described first step 50 is right angle step, described second step 60 is wedge angle step outwardly, particularly, described wedge angle step comprises two faces, and first surface 61 and second face 62 tilted of level, described first surface 61 and the second face 62 are combined to form wedge angle outwardly.The structure of described wedge angle step makes supporting ring 20 can carry out spacing to elastomer 10, thus bearing elastic body 10 prevent elastomer 10 from occurring radial seal gap.
Preferably, the hardness of described elastomer 10, supporting ring 20 and guide ring 30 increases successively, and particularly, described elastomer 10 adopts nitrile rubber material to make, and has the compression set of good oil resistance, wear resistance and excellence.The combined seal ring that the utility model provides is self-tightening double-action Sealing.In original state, elastomer 10 is out of shape generation radial tightening power, and increases along with the increase of system pressure, thus produces a sealing force completely, even if system does not have pressure can play sealing effect yet.
In sum, the combined seal ring that the utility model provides, comprise the guide ring 30 outside the elastomer 10 of centre, the supporting ring 20 of elastomer 10 both sides and supporting ring 20, described elastomer 10 top is provided with three protruding seal lips 40, the outside of described elastomer 10 is provided with first step 50 and second step 60 from top to bottom successively, the form fit in the shape of the inner side of described supporting ring 20 and the outside of described elastomer 10.The utility model is by the arranged outside first step 50 of elastomer 10 and second step 60, make supporting ring 20 be mated, wrap two steps, thus effectively prevent elastomer 10 from extruding from gap, the allowable stress of whole combined seal ring increases by 20%, extends working life simultaneously.
Obviously, those skilled in the art can carry out various change and modification to model utility and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.

Claims (7)

1. a combined seal ring, comprise the guide ring outside the elastomer of centre, the supporting ring of elastomer both sides and supporting ring, described elastomer top is provided with three protruding seal lips, it is characterized in that, described elastomeric outside is provided with first step and second step from top to bottom successively, the shape of the inner side of described supporting ring and the form fit in described elastomeric outside.
2. combined seal ring as claimed in claim 1, it is characterized in that, on described elastomer, the outer side of the seal lip of both sides is vertical plane, and fits in the inner side of described vertical plane and described supporting ring.
3. combined seal ring as claimed in claim 1, it is characterized in that, described first step is right angle step, and described second step is wedge angle step outwardly.
4. combined seal ring as claimed in claim 3, it is characterized in that, described wedge angle step comprises two faces, the first surface of level and second of inclination, and described first surface and the second face are combined to form wedge angle outwardly.
5. combined seal ring as claimed in claim 1, it is characterized in that, the hardness of described elastomer, supporting ring and guide ring increases successively.
6. combined seal ring as claimed in claim 5, is characterized in that, described elastomer adopts nitrile rubber material to make.
7. combined seal ring as claimed in claim 1, it is characterized in that, the both sides up and down of described guide ring all have some axial grooves.
CN201420721603.6U 2014-11-25 2014-11-25 A kind of combined seal ring Expired - Fee Related CN204253849U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420721603.6U CN204253849U (en) 2014-11-25 2014-11-25 A kind of combined seal ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420721603.6U CN204253849U (en) 2014-11-25 2014-11-25 A kind of combined seal ring

Publications (1)

Publication Number Publication Date
CN204253849U true CN204253849U (en) 2015-04-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420721603.6U Expired - Fee Related CN204253849U (en) 2014-11-25 2014-11-25 A kind of combined seal ring

Country Status (1)

Country Link
CN (1) CN204253849U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107726277A (en) * 2017-10-31 2018-02-23 商洛市虎之翼科技有限公司 A kind of seal washer and watertight light fitting
CN107830501A (en) * 2017-10-31 2018-03-23 商洛市虎之翼科技有限公司 A kind of power supply locking system and projecting lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107726277A (en) * 2017-10-31 2018-02-23 商洛市虎之翼科技有限公司 A kind of seal washer and watertight light fitting
CN107830501A (en) * 2017-10-31 2018-03-23 商洛市虎之翼科技有限公司 A kind of power supply locking system and projecting lamp

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150408

Termination date: 20171125

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