CN204025691U - Seal arrangement between the two articles that a kind of work does relatively reciprocating motion - Google Patents

Seal arrangement between the two articles that a kind of work does relatively reciprocating motion Download PDF

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Publication number
CN204025691U
CN204025691U CN201420486489.3U CN201420486489U CN204025691U CN 204025691 U CN204025691 U CN 204025691U CN 201420486489 U CN201420486489 U CN 201420486489U CN 204025691 U CN204025691 U CN 204025691U
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CN
China
Prior art keywords
seal
ring
articles
work
reciprocating motion
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
CN201420486489.3U
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Chinese (zh)
Inventor
钱嘉良
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.)
Wuxi Tongxin Plastic Products Co Ltd
Original Assignee
Wuxi Tongxin Plastic Products 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 Wuxi Tongxin Plastic Products Co Ltd filed Critical Wuxi Tongxin Plastic Products Co Ltd
Priority to CN201420486489.3U priority Critical patent/CN204025691U/en
Application granted granted Critical
Publication of CN204025691U publication Critical patent/CN204025691U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

Seal arrangement between the two articles that the utility model provides a kind of work to do relatively reciprocating motion, one object rest, another object of which movement, there is between two articles gap I, stationary object is provided with seal groove, described seal arrangement is arranged in groove, it be circular seal ring and cross section is square back-up ring that described seal arrangement comprises cross section, seal ring and back-up ring are all arranged in seal groove, and be sleeved in moving object, two articles compresses seal, seal ring diameter of section is less than the width of seal groove, back-up ring is arranged on the side of seal ring, and be the opposite of the stressed side of stationary object, there is between the object of back-up ring and motion gap II.Seal arrangement between the two articles that this work that the utility model relates to does relatively reciprocating motion, structure is simple, is no matter one-sided stressed or bilateral is stressed, can both ensures that seal ring is not damaged ahead of time, and the to-and-fro motion of not impede motion object.

Description

Seal arrangement between the two articles that a kind of work does relatively reciprocating motion
Technical field
The utility model relates to the seal arrangement between two articles that a kind of work does relatively reciprocating motion, belongs to field of mechanical technique.
Background technique
In hydraulic system, being sealed between mutually reciprocating two articles, especially between piston and the liquid oxygen inside wall of cylinder solves most important, the most effective section of having of hydraulic system leakage problem, if hydraulic system poor sealing, unallowed external leakage may be there is, the fluid revealed will pollute the environment, air may be made to enter oil sucting cavity, affect the service behaviour of liquid oxygen pump and the stationarity of hydraulic actuator motion, when revealing serious, system volume efficiency is too low, and even working pressure does not reach required value; If sealing transition, though can prevent from revealing, the sharp wear of hermetic unit can be caused, shorten the working life of Sealing, increase the kinetic friction resistance in hydraulic element, reduce the mechanical efficiency of system.Therefore, it is very important for reasonably selecting and design seal arrangement in hydraulic system.In prior art; the general seal ring that only uses is as the seal arrangement between the two articles doing to do relatively reciprocating motion; the material of seal ring generally selects rubber; the material resources characteristic of rubber has pliability; and oil-resistant effect is better; but due to its sealing is the two articles of outside rest, medial motion; therefore the situation that seal ring enters two articles gap can often be there is; once seal ring receives the reciprocating friction extruding between moving object and stationary object; seal ring change within a short period of time can be lost efficacy; and then there is leakage of oil situation, also can there is the sharp wear of sealing place simultaneously.
Model utility content
Seal arrangement between the two articles that the utility model provides a kind of work to do relatively reciprocating motion, for the good seal arrangement of a kind of combination property, both can not cause the leakage of oil, also can not cause wearing and tearing by sealing transition, thus ensure that the normal operation of system, and ensure that working life.
For solving above technical problem, the utility model provides following technological scheme: the seal arrangement between the two articles that a kind of work does relatively reciprocating motion, one object rest, another object of which movement, there is between two articles gap I, stationary object is provided with seal groove, described seal arrangement is arranged in groove, it be circular seal ring and cross section is square back-up ring that described seal arrangement comprises cross section, seal ring and back-up ring are all arranged in seal groove, and be sleeved in moving object, two articles compresses seal, seal ring diameter of section is less than the width of seal groove, back-up ring is arranged on the side of seal ring, and be the opposite of the stressed side of stationary object, there is between the object of back-up ring and motion gap II.
Further, described back-up ring is provided with two, and being separately positioned on cross section is circular seal ring both sides.
Further, described gap II is less than gap I.
Seal arrangement between the two articles that this work that the utility model relates to does relatively reciprocating motion, structure is simple, is no matter one-sided stressed or bilateral is stressed, can both ensures that seal ring is not damaged ahead of time, and the to-and-fro motion of not impede motion object.
Accompanying drawing explanation
Fig. 1 is the utility model ring structure figure;
Fig. 2 is the structural drawing that the utility model seal ring is installed on seal groove;
Fig. 3 is the structural drawing that in prior art, seal ring enters gap;
Fig. 4 is the structural drawing that the one-sided stressing conditions lower sealing device of the utility model is installed on seal groove;
Fig. 5 is the structural drawing that the utility model bilateral stressing conditions lower sealing device is installed on seal groove;
In Fig. 3-Fig. 5, P represents stressed, and arrow is Impact direction.
Embodiment
As shown in Figure 1, be a common o shape seal ring.Its cross section is circular, and the material of seal ring is oil resistant rubber, has good sealability, and interior outside and end face all play seal action, compact structure, and the surface friction drag of movement parts is less, easy to manufacture, easy accessibility, and cost compare is low.
As shown in Figure 2, for seal ring is installed on the structural drawing of seal groove.One object rest, another object of which movement, have gap I between two articles, stationary object 1 is provided with seal groove, and described seal arrangement is arranged in groove, it be circular seal ring 2 and cross section is square back-up ring 4 that described seal arrangement comprises cross section, seal ring 2 and back-up ring 4 to be all arranged in seal groove and to be sleeved in moving object 3, two articles compresses seal 2, and seal ring 2 diameter of section is less than the width of seal groove, back-up ring 4 is arranged on the side of seal ring, has gap II between the object of back-up ring 4 and motion.
Described back-up ring is provided with two, is back-up ring 4 and back-up ring 5, and being separately positioned on cross section is circular seal ring both sides.
As shown in Figure 3, when fluid working pressure is more than 10MPa, seal ring 2 solution in to-and-fro motion is clamp-oned gap by oil liquid pressure and lost efficacy ahead of time.For this reason, as shown in Figure 4, arrange a back-up ring 4 at seal ring 2 side, the thickness of back-up ring 4 is 1.2-1.5mm, and the material of back-up ring 4 is teflon, during single load bearing, lays a back-up ring 4 on the opposite of stressed side.
As shown in Figure 5, bilateral stressing conditions lower sealing device is installed on the structural drawing of seal groove, when bilateral is stressed, then respectively puts a back-up ring in the both sides of seal ring, back-up ring 4 and back-up ring 5.
Wherein, the internal diameter of back-up ring is greater than the outside of moving object, and gap II is less than gap I, should ensure the kinematic dexterity of moving object, does not hinder it to move, and will ensure that on the other hand seal ring can not be clamp-oned gap therebetween by two articles.
Embodiment described in the utility model does not form the restriction to the application's scope; within every spirit in the utility model design and principle, any amendment that one of skill in the art can make, equivalent to replace and improvement etc. all should be included within protection domain of the present utility model.

Claims (5)

1. the seal arrangement between the two articles that does relatively reciprocating motion of a work, one object rest, another object of which movement, there is between two articles gap I, stationary object is provided with seal groove, described seal arrangement is arranged in groove, it is characterized in that, it be circular seal ring and cross section is square back-up ring that described seal arrangement comprises cross section, seal ring and back-up ring are all arranged in seal groove, and be sleeved in moving object, two articles compresses seal, seal ring diameter of section is less than the width of seal groove, back-up ring is arranged on seal ring side, and be the opposite of the stressed side of stationary object, there is between the object of back-up ring and motion gap II.
2. the seal arrangement between the two articles that does relatively reciprocating motion of a kind of work according to claim 1, it is characterized in that, described back-up ring is provided with two, and being separately positioned on cross section is circular seal ring both sides.
3. the seal arrangement between the two articles that does relatively reciprocating motion of a kind of work according to claim 1, it is characterized in that, described gap II is less than gap I.
4. the seal arrangement between the two articles that does relatively reciprocating motion of a kind of work according to claim 1, it is characterized in that, the material of described back-up ring is teflon.
5. the seal arrangement between the two articles that does relatively reciprocating motion of a kind of work according to claim 1, it is characterized in that, the material of described seal ring is oil resistant rubber.
CN201420486489.3U 2014-08-27 2014-08-27 Seal arrangement between the two articles that a kind of work does relatively reciprocating motion Expired - Fee Related CN204025691U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420486489.3U CN204025691U (en) 2014-08-27 2014-08-27 Seal arrangement between the two articles that a kind of work does relatively reciprocating motion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420486489.3U CN204025691U (en) 2014-08-27 2014-08-27 Seal arrangement between the two articles that a kind of work does relatively reciprocating motion

Publications (1)

Publication Number Publication Date
CN204025691U true CN204025691U (en) 2014-12-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420486489.3U Expired - Fee Related CN204025691U (en) 2014-08-27 2014-08-27 Seal arrangement between the two articles that a kind of work does relatively reciprocating motion

Country Status (1)

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CN (1) CN204025691U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104214347A (en) * 2014-08-27 2014-12-17 无锡同心塑料制品有限公司 Sealing device between two objects of performing relative reciprocating motion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104214347A (en) * 2014-08-27 2014-12-17 无锡同心塑料制品有限公司 Sealing device between two objects of performing relative reciprocating motion

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

Granted publication date: 20141217

Termination date: 20150827

EXPY Termination of patent right or utility model