CN219159509U

CN219159509U - Piston is with pan stopper seal

Info

Publication number: CN219159509U
Application number: CN202223570301.7U
Authority: CN
Inventors: 谢勇辉
Original assignee: Ningbo Taifonuo Fluoroplastic Products Co ltd
Current assignee: Ningbo Taifonuo Fluoroplastic Products Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-09
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a universal plug seal for a piston, and relates to the field of universal plug seals. The scheme is that the sealing device comprises a sealing main ring, an annular groove is formed in the periphery of the sealing main ring, a spiral spring is embedded in the annular groove, a supporting rubber strip is inserted into the spiral spring, the supporting rubber strip is made of rubber materials, the outer surface of the supporting rubber strip abuts against the inner wall of the spiral spring, grooves are formed in the outer surfaces of two sides of the sealing main ring, lip peaks are formed in the two sides of the annular groove, and the vertical section of the grooves is arc-shaped. Through inserting inside the coil spring and being equipped with the supporting adhesive tape, and the supporting adhesive tape has elasticity, can seal main ring or coil spring deformation along with the pantile, forms interior support to the coil spring through the supporting adhesive tape, more stand wear and tear, and the coil spring seals main ring formation external support to pantile, reaches the effect of inside and outside double bracing, solves the inside no support of coil spring, receives extrusion deformation influence and produces metal fatigue for a long time to improve coil spring life.

Description

Piston is with pan stopper seal

Technical Field

The utility model relates to the field of general plug seals, in particular to a general plug seal for a piston.

Background

The pan plug seal is a high-performance sealing piece with a special spring arranged in a U-shaped teflon, and the sealing lip (surface) is ejected out by proper spring force and system fluid pressure so as to lightly press the sealed metal surface to generate a very excellent sealing effect. The spring actuation effect can overcome the slight eccentricity of the metal mating surfaces and wear of the sealing lips while maintaining the desired sealing performance.

The universal plug seal can be manufactured according to AS568A standard O-shaped ring grooves (such AS radial shaft seal, piston seal, axial face seal and the like), and can completely replace a general O-shaped ring, and good sealing performance can be maintained for a long time because the universal plug seal has no trouble of swelling. For example, when the mechanical shaft seal is applied to the petrochemical Cheng Gaowen corrosion environment, the most common leakage cause is not only uneven abrasion of the sliding ring, but also degradation damage of the O-shaped ring, and the problems of softening, swelling, surface roughening, abrasion and the like of rubber can be completely improved after the HiPerSeal is used, so that the service life of the mechanical shaft seal is greatly prolonged.

The existing spring assembly of the spring universal plug seal is generally assembled by adopting a single spring, and the spring is mainly divided into two types of V-shaped and spiral, and Chinese patent publication number: the utility model provides a full circle spring is floodfilled and is sealed disclosed in CN207584025U, includes floodfilled and sealed main part, the upper and lower both ends of floodfilled and sealed main part one side are sealed respectively to be connected with outer seal lip face and interior seal lip face install full circle stainless steel V type spring between outer seal lip face and the interior seal lip face, it adopts V type spring, and this V type spring or the spiral spring of using now all have a problem, both middle parts are the fretwork, support floodfilled and sealed main part totally relies on the elasticity of both materials, after long-term use, because metal fatigue can lead to both to warp and lack elasticity, influence floodfilled and sealed leakproofness, secondly, because the tip of V type spring is in time done chamfering treatment, but with outer seal lip face and interior seal lip face contact point pressure is still great, very easily cause outer seal lip face and interior seal lip face to be scratched by V type spring.

Disclosure of Invention

Object of the utility model

Therefore, the utility model aims to provide a universal plug seal for a piston, so as to realize internal and external double support and improve the service life of a spiral spring.

(II) technical scheme

In order to achieve the technical aim, the utility model provides a universal plug seal for a piston, which comprises the following steps:

the sealing device comprises a sealing main ring, an annular groove is formed in the periphery of the sealing main ring, a spiral spring is embedded in the annular groove, a supporting rubber strip is inserted into the spiral spring, the supporting rubber strip is made of rubber materials, the outer surface of the supporting rubber strip abuts against the inner wall of the spiral spring, grooves are formed in the outer surfaces of two sides of the sealing main ring, lip peaks are formed in the two sides of the annular groove, and the vertical section of the groove is arc-shaped.

Preferably, the vertical section of the general plug sealing main ring is U-shaped.

Preferably, the shape of the spiral spring is matched with the shape of the inner cavity of the annular groove.

Preferably, the coil spring is annular.

Preferably, the end part of the spiral spring is sleeved with a connecting rubber sleeve, and two ends of the supporting rubber strip are fixedly connected through the connecting rubber sleeve.

Preferably, the inner wall of the connecting rubber sleeve is embedded with a lining net.

From the above technical scheme, the application has the following beneficial effects:

1: through inserting inside the coil spring and being equipped with the supporting adhesive tape, and the supporting adhesive tape has elasticity, can seal main ring or coil spring deformation along with the pantile, forms interior support to the coil spring through the supporting adhesive tape, more stand wear and tear, and the coil spring seals main ring formation external support to pantile, reaches the effect of inside and outside double bracing, solves the inside no support of coil spring, receives extrusion deformation influence and produces metal fatigue for a long time to improve coil spring life.

2: through all seting up the recess at the pan-plug seal main ring both sides, make the recess both sides form the lip peak to after the recess is attached on the piston assembly, air in the recess is extruded and is formed the negative pressure, has further improved the leakproofness between pan-plug seal main ring and the piston assembly.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic overall view of a piston plug seal according to the present utility model; FIG. 2 is a schematic side view of a structure of a piston universal plug seal according to the present utility model;

FIG. 3 is a schematic cross-sectional view of A-A in FIG. 2 of a structure diagram of a piston universal plug seal according to the present utility model;

FIG. 4 is an exploded schematic view of a piston plug seal according to the present utility model;

fig. 5 is a schematic view of an expanded state of the connecting rubber sleeve in fig. 4, which is a structure diagram of a plug seal for a piston.

Description of the drawings: 1. a main ring is sealed by a plug; 2. a coil spring; 3. supporting the adhesive tape; 4. connecting a rubber sleeve; 5. lining net; 6. a groove.

Detailed Description

The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, the same or similar reference numerals indicate the same or similar parts and features. The drawings merely schematically illustrate the concepts and principles of embodiments of the disclosure and do not necessarily illustrate the specific dimensions and proportions of the various embodiments of the disclosure. Specific details or structures may be shown in exaggerated form in particular figures to illustrate related details or structures of embodiments of the present disclosure.

Referring to fig. 1-5:

example 1

The utility model provides a plug seal for piston, includes plug seal main ring 1, and the periphery of plug seal main ring 1 has seted up the ring channel, and the embedded coil spring 2 of ring channel, coil spring 2 are annular, and as shown in figure 4, coil spring 2 shrinkage state's internal diameter is the same with the internal diameter size of ring channel, and coil spring 2 has elasticity, so coil spring 2 can strut the cover in the ring channel;

the inside of coil spring 2 is inserted and is equipped with supporting adhesive tape 3, and supporting adhesive tape 3 adopts the rubber material to make, and supporting adhesive tape 3 has elasticity, can be along with coil spring 2 deformation, also can support coil spring 2 inside simultaneously, and the surface of supporting adhesive tape 3 offsets with coil spring 2's inner wall.

In order to improve the tightness of the joint between the side surface of the main ring 1 of the plug seal and the external piston assembly, grooves are formed on the outer surfaces of the two sides of the main ring 1 of the plug seal, lip peaks are formed on the two sides of the annular groove, the lip peaks can prop against the external piston assembly after the main ring is arranged on the external piston assembly, the vertical section of the grooves is arc-shaped, and when the grooves are extruded by the external piston assembly, air in the grooves can be extruded to form negative pressure, so that the main ring 1 of the plug seal is tightly attached to the piston assembly.

Specifically, the vertical section of the main ring 1 of the plug seal is U-shaped, the shape of the spiral spring 2 is matched with the shape of the inner cavity of the annular groove, and the supporting effect of the spiral spring 2 on the main ring 1 of the plug seal is improved.

Example two

A piston is sealed with pan-plug, its on the basis of embodiment one, the tip cover of coil spring 2 is equipped with connecting gum cover pipe 4, and connecting gum cover pipe 4 is passed through at coil spring 2's both ends and is connected fixedly, and the inner wall of connecting gum cover pipe 4 is embedded to have inside lining net 5, improves the joint strength of connecting gum cover pipe 4.

Working principle: when the piston rod is used, the main ring 1 is sleeved on the piston rod, the piston assembly is sleeved on the main ring 1, so that the main ring 1 is in interference fit with the piston rod and the piston assembly, grooves 6 on two sides of the main ring 1 are attached to the piston assembly, the inner ring of the main ring 1 is subjected to the elasticity of the spiral spring 2 and the elasticity of the material of the inner ring, and the piston assembly is tightly hooped on the piston rod, so that the tightness between the piston assembly and the piston rod is ensured.

The exemplary implementation of the solution proposed by the present disclosure has been described in detail hereinabove with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and adaptations can be made to the specific embodiments described above without departing from the concept of the present disclosure, and various technical features, structures proposed by the present disclosure can be combined in various ways without departing from the scope of the present disclosure, which is defined by the appended claims.

Claims

1. The utility model provides a piston is with pan stopper seal, includes pan stopper seal main ring (1), its characterized in that, the ring channel has been seted up to the periphery of pan stopper seal main ring (1), and the ring channel is embedded to have coil spring (2), the inside of coil spring (2) is inserted and is equipped with supporting rubber strip (3), supporting rubber strip (3) adopt rubber material to make, the surface of supporting rubber strip (3) offsets with the inner wall of coil spring (2), the both sides surface of pan stopper seal main ring (1) all sets up flutedly, and the ring channel both sides form the lip peak, and the vertical cross-section of recess is the arc.

2. A piston pan plug seal according to claim 1, characterized in that the vertical cross-section of the pan plug seal main ring (1) is U-shaped.

3. A piston pan plug seal according to claim 1, characterized in that the shape of the spiral spring (2) is in line with the shape of the inner cavity of the annular groove.

4. A piston pan plug seal according to claim 1, characterized in that the spiral spring (2) is ring-shaped and the two ends of the spiral spring (2) are abutted.

5. The universal plug seal for the piston according to claim 1, wherein the end part of the spiral spring (2) is sleeved with a connecting rubber sleeve (4), and two ends of the spiral spring (2) are fixedly connected through the connecting rubber sleeve (4).

6. A piston pan plug seal according to claim 5, characterized in that the inner wall of the connecting glue sleeve (4) is embedded with a lining mesh (5).