CN209990898U

CN209990898U - Bidirectional piston sealing ring

Info

Publication number: CN209990898U
Application number: CN201920798632.5U
Authority: CN
Inventors: 田尧; 张亮; 韩学英
Original assignee: Yangzhou Zhongde Sealing Technology Co Ltd
Current assignee: Yangzhou Zhongde Sealing Technology Co Ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-01-24
Anticipated expiration: 2029-05-29

Abstract

The utility model discloses a two-way piston seal circle in the sealing washer field. This kind of two-way piston seal circle includes guide ring, sealing member, elastic component, its characterized in that: the cross section outline of the sealing element is in a convex shape, the guide rings are installed on two sides of the sealing element, a first groove for embedding the elastic element is formed in the middle of the inner ring of the sealing element, the elastic element is partially embedded in the first groove, the part, located outside the first groove, of the elastic element is connected with the piston, a first bulge in the middle of the outer ring of the sealing element is outwards provided with a circular arc shape, two side edges of the outer ring of the sealing element are provided with a second bulge in a drop shape, a second groove is formed between the second bulge and the first bulge, and the radial height of the. The bidirectional piston sealing ring has good sealing effect and saves energy.

Description

Bidirectional piston sealing ring

Technical Field

The utility model relates to a sealing washer technical field, in particular to two-way piston sealing washer.

Background

The piston structure application is in the aspect of life, work, manufacturing at present, and the product that has piston structure of selling on the market is various, and it all has different design philosophy separately, strives to reach different users' operation requirement.

The traditional sealing ring for the bidirectional piston for the hydraulic cylinder support is simple in structure and convenient to manufacture. However, due to poor structural functional complementarity, poor product strength, abrasion resistance and impact resistance and short service life, the reliability of the main seal of the piston of the hydraulic support is influenced, and the friction force between the piston and the cylinder body is increased by simply improving the reliability of the piston seal in a pressurization mode, so that the energy waste is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rational in infrastructure, sealed effectual two-way piston seal circle.

In order to realize the above utility model purpose, the utility model relates to a following technical scheme that two-way piston sealing washer adopted:

the utility model provides a two-way piston seal circle, includes guide ring, sealing member, elastic component, sealing member cross section profile is the type of protruding, sealing member outer lane width is less than the inner circle width, the guide ring install in the both sides of sealing member, sealing member inner circle middle part is provided with the confession the inlaid recess of elastic component is one, the elastic component part inlay in the recess is one, the elastic component is located the outer part of recess is connected with the piston, sealing member outer lane middle part outwards is provided with and is circular-arc protruding one, sealing member outer lane both sides edge is provided with the protruding two of drip form respectively, protruding two with be provided with recess two between the protruding one, protruding two radial height is higher than protruding one radial height. The elastic component supports the sealing element, so that the first bulge can be tightly attached to the inner wall of the cylinder body to play a sealing role, in addition, due to the reaction force of the hydraulic cylinder body, the second bulge located at the rear end in the moving direction can also realize the sealing role towards the inner wall of the cylinder body in the laminating way, the first bulge and the second bulge form a double sealing effect, the friction force between the sealing ring and the cylinder body is effectively reduced while the sealing effect is ensured, and the second groove can be used for effectively reducing the friction force when the second bulge is compressed.

Further, the guide ring has an L-shaped cross-sectional profile that mates with the seal. The part of the guide ring in contact with the outer ring of the sealing element limits the protrusion to move towards the direction far away from the second groove, so that the sealing effect is enhanced.

Further, the cross-sectional profile of the first groove is rectangular, and the cross-sectional profile of the elastic piece is rectangular matched with the first groove. The elastic member with the rectangular cross section is not easy to fall off from the first groove, and can provide enough pressure for the sealing member.

Furthermore, the cross section of the second groove is U-shaped in profile.

Further, the guide ring is made of polyformaldehyde wear-resistant materials, the sealing element is made of polyurethane materials, and the elastic element is made of rubber materials. The polyurethane material is a material with high wear resistance and high strength.

Compared with the prior art, the beneficial effects of the utility model reside in that: the structure is reasonable, and the sealing effect is good; the friction force between the sealing ring and the cylinder body is reduced while the sealing effect is ensured, and the energy is saved.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a schematic structural diagram of the present invention.

Wherein, 1 guide ring, 2 sealing member, 21 groove I, 22 protrusion I, 23 protrusion II, 24 groove II, 3 elastic member.

Detailed Description

The present invention will be further explained with reference to the following embodiments, which are to be understood as illustrative only and not as limiting the scope of the invention, and modifications of the various equivalent forms of the present invention by those skilled in the art after reading the present invention fall within the scope of the appended claims.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "vertical" and "outer peripheral surface" are used to indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the product of the present invention is usually placed when in use, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific position, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the term "vertical" or the like does not imply that the components are required to be absolutely horizontal or overhanging, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described herein can be combined and combined by those skilled in the art without conflicting aspects.

As shown in fig. 1-2, a bidirectional piston seal ring comprises a guide ring 1 and a sealing element 2, elastic component 3, the approximate type of convex of sealing member cross section profile, sealing member outer lane width is less than the inner circle width, the guide ring is installed in the both sides of sealing member, guide ring cross section profile is L font and matches with the sealing member, sealing member inner circle middle part is seted up and is supplied the inlaid recess 21 of elastic component, the cross section profile of recess one is the rectangle, the cross section profile of elastic component is the rectangle with recess one complex, the elastic component part is inlayed in recess one, the part that the elastic component is located outside recess one is connected with the piston, sealing member outer lane middle part outwards is formed with and is circular-arc protruding one 22, sealing member outer lane both sides edge is formed with the protruding two 23 of dribbling, set up recess two 24 between protruding two and the protruding one, the cross section profile of recess two is the U-shape, the radial height of protruding two is higher.

The guide ring is made of polyformaldehyde wear-resistant materials, the sealing element is made of polyurethane materials, and the elastic element is made of rubber materials.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a two-way piston seal circle, includes guide ring, sealing member, elastic component, its characterized in that: the sealing member cross section profile is the type of protruding font, the guide ring install in the both sides of sealing member, sealing member inner circle middle part is provided with the confession the inlayed recess of elastic component is one, the elastic component part inlay in the recess is one, the elastic component is located the outer part of recess is connected with the piston, sealing member outer lane middle part is provided with outwards to be circular-arc protruding one, sealing member outer lane both sides edge is provided with the protruding two of drip form, protruding two with be provided with recess two between the protruding one, protruding two's radial height is higher than protruding one's radial height.

2. The bi-directional piston seal ring of claim 1, wherein: the cross section of the guide ring is L-shaped and matched with the sealing element.

3. The bi-directional piston seal ring of claim 1, wherein: the cross section of the first groove is rectangular, and the cross section of the elastic piece is rectangular matched with the first groove.

4. The bi-directional piston seal ring of claim 1, wherein: the cross section of the second groove is U-shaped.

5. The bi-directional piston seal ring of claim 1, wherein: the guide ring is made of polyformaldehyde wear-resistant materials, the sealing element is made of polyurethane materials, and the elastic element is made of rubber materials.