CN206257279U

CN206257279U - The static seal of piston rod

Info

Publication number: CN206257279U
Application number: CN201621305172.0U
Authority: CN
Inventors: 徐亭
Original assignee: YOUTAIKE (SUZHOU) SEALING TECHNOLOGY Co Ltd
Current assignee: YOUTAIKE (SUZHOU) SEALING TECHNOLOGY Co Ltd
Priority date: 2016-11-30
Filing date: 2016-11-30
Publication date: 2017-06-16
Anticipated expiration: 2026-11-30

Abstract

The utility model is related to energy-conserving and environment-protective technical fiel, more particularly to a kind of static seal of piston rod；Static seal is annular, sealing upper lip and sealing lower lip are set at the top and bottom of seal, sealing upper lip and sealing lower lip are less than or equal to 90 ° to the formed angle angle of seal inner side bending, at least two continuous crests are provided with the top of sealing upper lip, the bottom for sealing lower lip is horizontal plane, and the medial surface of seal is fillet surface with the junction of horizontal plane；The static seal simple structure of piston rod that the utility model is provided, long service life and sealing property is preferable.

Description

The static seal of piston rod

Technical field

The utility model is related to a kind of static seal of piston rod.

Background technology

The importance of the seal in plant equipment is self-evident in the prior art, decide in industrial automation fluid and The transmission performance of gas and the quality of sealed product, play critical effect, due to equipment in the industrial production Upgrading and update, along with seal aging phenomenon is increasingly serious and demand that updated to seal, it is living at present Static seal structure in stopper rod tends not to meet the requirement for sealing different medium, when easily influence has different medium The sealing of piston rod.

Utility model content

In order to solve the above technical problems, the purpose of this utility model is to provide a kind of long service life and good seal performance The static seal of piston rod.

The static seal of the piston rod that the utility model is provided, the static seal is annular, the top of the seal Sealing upper lip and sealing lower lip are set to bottom, the sealing upper lip and sealing lower lip are to seal inner side bending institute Into angle angle be less than or equal to 90 °, it is described sealing upper lip at the top of be provided with least two continuous crests, the sealing The bottom of lower lip is horizontal plane, and the medial surface of the seal is fillet surface with the junction of the horizontal plane.

Further, at least one annular protrusion is distributed with the lateral surface of the seal.

Further, first annular raised and the second annular protrusion is distributed with the lateral surface of the seal, it is described First annular raised vertical cross-section is arc convex, and second annular protrusion is distributed in described first annular raised and close Seal up between lip.

More specifically, second annular protrusion is that annular triangle is raised.

Further, the continuous crest on the sealing upper lip is 5.

Further, the angle angle is 45~90 °.

Further, the lateral surface of the seal is set to fillet surface with the junction of the horizontal plane.

By such scheme, the utility model at least has advantages below：It is quiet close in the piston rod course of work in order to solve The easy service life for producing of sealing is short, complex structure and sealing property can not meet the problems such as requiring, the utility model is carried The static seal long service life and good seal performance of the piston rod of confession.

Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model Art means, and being practiced according to the content of specification, with preferred embodiment of the present utility model and coordinate accompanying drawing detailed below Describe in detail bright as after.

Brief description of the drawings

Fig. 1 is the cross-sectional view of the static seal of the piston rod that the utility model is provided.

Specific embodiment

With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below Embodiment is used to illustrate the utility model, but is not limited to scope of the present utility model.

Referring to Fig. 1, a kind of static seal of piston rod of the preferred embodiment of the utility model one, static seal is annular, The top and bottom of seal 1 are set to sealing upper lip 2 and sealing lower lip 3, and sealing upper lip 2 and sealing lower lip 3 are to seal 1 Bending formed angle angle in inner side is less than or equal to 90 °, and the top for sealing upper lip 2 is distributed with least two continuous crests 4, the bottom for sealing lower lip 3 is horizontal plane 5, and the medial surface of seal 1 is fillet surface 6 with the junction of horizontal plane.

The operation principle of the static seal of the piston rod that the utility model is provided is as follows：

The static seal of this piston rod is the seal 1 that sealing function is played in piston rod, generally annular, so may be used With it is multi-faceted prevent gas or hydraulic seal when the generation revealed, simultaneously because during sealing the two ends of seal 1 pressure differential, squeeze Means of press seals upper lip 2 and sealing lower lip 3 make the angle for being formed therebetween diminish, and can so alleviate the pressure that seal 1 is subject to, The top of sealing upper lip 2 distributed the continuous crest 4 of annular, can increase the bearing area at the top of seal 1, and then increase sealing The bearing capacity of part 1, simultaneously because the bottom surface of sealing lower lip 3 is horizontal plane 5, and seal 1 medial surface and horizontal plane Junction is fillet surface 6, facilitates the installation of seal 1 and improves the sealing property of the bottom junction of seal 1.

In order to increase the sealing synergy between sealing upper lip 2 and sealing lower lip 3, it is distributed on the lateral surface of seal 1 There is at least one annular protrusion, first annular raised 7 and second annular protrusion 8, the first ring are distributed with the lateral surface of seal 1 The vertical cross-section of shape projection 7 be arc convex, the second annular protrusion 8 be distributed in first annular raised 7 and sealing upper lip 2 it Between, the second annular protrusion 8 is raised for annular triangle；So, the second annular protrusion 8 serves the effect of first sealing, first Annular protrusion 7 serves the second sealing function that collaboration sealing upper lip 2 and sealing lower lip 3 are sealed.

While in order to ensure to seal 2 bearing capacity of upper lip in seal 1, sealed when mitigating to liquid or air seal The disclosure risk of upper lip 2, the crest 4 on sealing upper lip 2 is 5.

In order to increase the bending effect of sealing upper lip 2 and sealing lower lip 3, it is ensured that the bearing capacity of static seal and sealing are imitated Really, angle angle is 45~90 °.

Sealing installation of the static seal 1 in piston rod for convenience, the lateral surface of seal 1 and the junction of horizontal plane It is set to fillet surface 6.

The above is only preferred embodiment of the present utility model, be not limited to the utility model, it is noted that for For those skilled in the art, on the premise of the utility model know-why is not departed from, if can also make Dry to improve and modification, these are improved and modification also should be regarded as protection domain of the present utility model.

Claims

1. a kind of static seal of piston rod, it is characterised in that：The static seal is annular, the top and bottom of the seal Portion is set to sealing upper lip and sealing lower lip, and the sealing upper lip and sealing lower lip are formed to the bending of seal inner side Angle angle is less than or equal to 90 °, and at least two continuous crests, the sealing lower lip are provided with the top of the sealing upper lip Bottom be horizontal plane, the junction of the medial surface of the seal and the horizontal plane is fillet surface.

2. the static seal of piston rod according to claim 1, it is characterised in that：It is distributed on the lateral surface of the seal There is at least one annular protrusion.

3. the static seal of piston rod according to claim 2, it is characterised in that：It is distributed on the lateral surface of the seal There is first annular raised and the second annular protrusion, the first annular raised vertical cross-section is arc convex, described second Annular protrusion is distributed in described first annular raised and sealing upper lip between.

4. the static seal of piston rod according to claim 3, it is characterised in that：Second annular protrusion is annular three Angle is raised.

5. the static seal of piston rod according to claim 1, it is characterised in that：Continuous crest on the sealing upper lip It is 5.

6. the static seal of piston rod according to claim 1, it is characterised in that：The angle angle is 45~90 °.

7. the static seal of piston rod according to claim 1, it is characterised in that：The lateral surface of the seal with it is described The junction of horizontal plane is set to fillet surface.