CN211018239U

CN211018239U - Ethylene propylene diene monomer cold-shrinkable tube

Info

Publication number: CN211018239U
Application number: CN201922089045.1U
Authority: CN
Inventors: 刘长浩
Original assignee: 刘长浩
Current assignee: Beijing Haoyi science and Technology Development Center; Beijing Zhongtian Pengyu Technology Development Co., Ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-07-14
Anticipated expiration: 2029-11-28

Abstract

The application discloses ethylene-propylene-diene monomer rubber cold shrink pipe includes: the supporting tube is provided with a tube wall, the supporting tube is integrally formed by extruding through a special die, a surrounding groove which is surrounded by the tube wall of the supporting tube is arranged on the supporting tube, an Ethylene Propylene Diene Monomer (EPDM) skin layer is hermetically arranged on the surrounding groove, a plurality of inner layer elastic pieces are arranged between the inner wall of the EPDM skin layer and the surrounding groove and are respectively arranged between every two adjacent surrounding grooves, and the inner layer elastic pieces are furled and used for driving the adjacent surrounding grooves to be drawn close to each other when the supporting tube is drawn out. The utility model has the advantages that: the sealing structure is simple, the sealing pressure is always kept when the rubber is pulled out, the excellent antibacterial, ozone-resistant, ultraviolet-resistant and acid-base-resistant performances, the good thermal stability, the excellent moisture-resistant performance and the special rubber formula are realized, the tough characteristic of the material is ensured to resist external mechanical force, the installation is simple and convenient, a special tool is not needed, and the firing or the heating is not needed.

Description

Ethylene propylene diene monomer cold-shrinkable tube

Technical Field

The utility model relates to an ethylene-propylene-diene monomer rubber cold-shrinkable tube.

Background

CN201742050U discloses a support tube having a tube wall, which is integrally formed by extrusion through a special die and has a circumferential groove surrounding the tube wall of the support tube. Since the support tube has a circumferential groove running around the tube wall of the support tube, the support tube can be broken at the tube wall along the circumferential groove during the extraction, so that the support tube can be extracted in a strip-like manner. But the significant disadvantages are: when the sealing ring is drawn out, the sealing performance is reduced, and the use is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned not enough, provide an ethylene-propylene-diene monomer rubber cold shrink pipe, the technical problem that sealing performance descends when its solution is taken out.

In order to realize the purpose, the utility model discloses a technical scheme be: an ethylene propylene diene monomer cold-shrinkable tube is characterized by comprising: the support tube is provided with a tube wall, the support tube is extruded by a special die to form a whole, and the support tube is provided with a surrounding groove which is surrounded by the tube wall and is arranged along the support tube.

The utility model has the advantages that:

simple structure encircle the groove upper seal and set up the EPT rubber cortex, the inner wall of EPT rubber cortex sets up a plurality of inlayer elastic components with encircleing between the groove, sets up respectively between each adjacent groove of encircleing, the inlayer elastic component is and draws in the form in, is used for driving adjacent groove of encircleing and draws close each other when taking the stay tube out. The waterproof sealing rubber has reliable waterproof sealing performance, is tough and elastic, always keeps the sealing pressure when being drawn out, has excellent antibacterial, ozone-resistant, ultraviolet-resistant and acid-base-resistant performances, good thermal stability and excellent moisture-resistant electrical performance, ensures that the material has tough characteristics to resist external mechanical force due to the special rubber formula, is simple and convenient to mount, does not need special tools, and does not need to be fired or heated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural view of an epdm cold shrink tube.

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.

Referring to fig. 1, the ethylene propylene diene monomer cold shrink tube of the present invention includes: the support tube comprises a support tube 10 which is provided with a tube wall and integrally formed by extrusion through a special die, wherein a surrounding groove 11 which surrounds the tube wall of the support tube is formed in the support tube, the support tube is characterized in that an ethylene propylene diene monomer skin layer 12 is arranged on the surrounding groove 11 in a sealing mode, a plurality of inner layer elastic pieces 13 are arranged between the inner wall of the ethylene propylene diene monomer skin layer 12 and the surrounding groove 11 and are respectively arranged between every two adjacent surrounding grooves, and the inner layer elastic pieces 13 are furled and used for driving the adjacent surrounding grooves 11 to be close to each other when the support tube is drawn out. The ethylene propylene diene monomer rubber is adopted, and a special rubber formula is adopted, so that the material has the tough characteristic.

In one embodiment, the inner layer elastic member 13 includes a plurality of arch portions 131 extending along the circumference of the tube body, and the arch portions are symmetrically connected to the surrounding grooves. The gathering force is enhanced, and therefore the sealing effect is improved.

In one embodiment, the inner layer elastic member is selected from at least one of a heat sealable thermoplastic and an elastomer.

In one embodiment, the elastomer is a thermoplastic elastomer.

In one embodiment, the cross-sectional shape of the surrounding groove 11 is elliptical.

The utility model discloses when using:

firstly, before the connector is connected, the cold shrink tube is sleeved in the cable.

And the cable at the minimum end is too small in outer diameter and needs to be wound.

And (4) insulating sealing tape.

The cold shrink tube is moved to the joint.

One hand positions the cold shrink tube at the designated installation position, and the other hand slightly draws the support bar along the tripping direction. Because set up a plurality of inlayer elastic component between the inner wall of EPT rubber cortex and the surrounding groove, set up respectively between each adjacent surrounding groove, the inlayer elastic component is the form of drawing in, is used for driving adjacent surrounding groove and draws close each other when taking out the stay tube. So that the gap between the adjacent surrounding grooves is pressed by the inner layer elastic piece to form a sealing effect when the elastic piece is drawn out.

And (5) finishing the installation.

The utility model discloses an use the scene:

wire and cable joints for all solid medium (rubber and plastic) insulation of 1000V and below.

For sealing wireless communication towers and other exposed coaxial connections.

Can be directly buried or immersed in water.

For indoor, outdoor or overhead use.

Mechanical protection and moisture protection of high-voltage overhead line connection or bus bars.

Repair, excavation repair, casing repair, communication and other non-electrical component moisture protection.

Secondary wire connections, insulation of copper or aluminum conductors.

The utility model has the advantages that:

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims

1. An ethylene propylene diene monomer cold-shrinkable tube, comprising: the support tube is provided with a tube wall, the support tube is extruded by a special die to form a whole, and the support tube is provided with a surrounding groove which is surrounded by the tube wall and is arranged along the support tube.

2. The EPDM cold shrink tube of claim 1, wherein the inner elastic member includes a plurality of arch parts extending along the circumference of the tube body, and the arch parts are symmetrically connected to the surrounding grooves.

3. The ethylene-propylene-diene monomer cold shrinkable tube according to claim 2, wherein the inner layer elastic member is at least one material selected from a heat-sealable thermoplastic and an elastomer.

4. The ethylene-propylene-diene monomer cold shrinkable tube according to claim 3, wherein the elastomer is a thermoplastic elastomer.

5. The ethylene propylene diene monomer cold shrinkable tube according to claim 1, wherein a cross-sectional shape of the surrounding groove is an ellipse.