阅读说明：本技术 防脱双层密封管 (Anti-drop double-layer sealing tube ) 是由 李波 于 2019-10-17 设计创作，主要内容包括：本发明公开了一种防脱双层密封管,该防脱双层密封管包括：外管和内管,内管的侧壁上设置有与内管同轴的螺旋孔,外层的内壁上形成有与螺旋孔对应的螺旋槽,与螺旋孔对应的螺旋筋自螺旋孔的端部螺旋安装至螺旋孔内,且螺旋筋的外侧凸出于内管的外壁并嵌设于螺旋槽内。该防脱双层密封管简易安装,强度高,密封性好。(The invention discloses an anti-drop double-layer sealing tube, which comprises: the spiral groove is formed in the inner wall of the outer layer, the spiral rib corresponding to the spiral hole is spirally installed into the spiral hole from the end part of the spiral hole, and the outer side of the spiral rib protrudes out of the outer wall of the inner pipe and is embedded in the spiral groove. This double-deck sealed tube of anticreep simply installs, and intensity is high, and the leakproofness is good.)

1. The utility model provides a double-deck sealed tube of anticreep, its characterized in that, double-deck sealed tube of anticreep includes: outer tube (5) and inner tube (1), be provided with on the lateral wall of inner tube (1) with the coaxial spiral hole of inner tube (1), be formed with on the outer inner wall with spiral groove (4) that the spiral hole corresponds, with spiral muscle (3) that the spiral hole corresponds certainly the tip spiral installation of spiral hole extremely in the spiral hole, just the outside protrusion of spiral muscle (3) in the outer wall of inner tube (1) inlays to be located in spiral groove (4).

2. The anti-drop double-layer sealing pipe according to claim 1, wherein a positioning rib (2) parallel to the axis of the inner pipe (1) is arranged on the outer side of the inner pipe, and a positioning groove matched with the positioning rib (2) is formed on the inner wall of the outer pipe (5).

3. The anti-drop double-layer sealing pipe according to claim 2, wherein the positioning groove is arranged at the end of the outer pipe (5), and the positioning rib (2) is arranged at the same end of the positioning groove.

4. The anti-run-off double-layer sealing pipe according to claim 2 or 3, wherein the positioning ribs (2) are provided with at least two.

5. The anti-drop double-layer sealing pipe according to claim 1, wherein the inner pipe (1) is a sealing plastic pipe, and the spiral rib (3) is made of hard plastic.

6. The anti-drop double-layer sealing pipe according to claim 5, wherein the spiral rib (3) is welded and fixed with the inner pipe (1) after being screwed into the spiral hole.

7. The anti-drop double-layer sealing pipe according to claim 6, wherein the spiral rib (3) and the inner pipe (1) are welded by hot melting.

8. The anti-drop double-layer sealing pipe according to claim 1, wherein the outer pipe (5) is a metal pipe or a rubber pipe.

9. The anti-drop double-layer sealing pipe according to claim 1, wherein the inner wall of the outer pipe (5) is attached to the outer wall of the inner pipe (1).

Technical Field

The invention relates to a sealing element, in particular to an anti-drop double-layer sealing tube.

Background

The sealing element is very common in industrial production and life, the variety of the sealing element is very large, and different sealing element structures are applied to different fields to play a role in sealing.

At present, there is a double-deck sealed tube, and this double-deck sealed tube is bilayer structure, and outer cover is established in the inlayer outside, realizes sealing connection between inlayer and other parts, and the bulk strength can be strengthened to the skin, but, still has the problem that drops easily between skin and the inlayer and needs to solve.

Disclosure of Invention

The invention aims to provide an anti-falling double-layer sealing pipe which is simple to install, high in strength and good in sealing performance.

In order to achieve the above object, the present invention provides an anti-separation double-layer sealing pipe, comprising: outer tube and inner tube, be provided with on the lateral wall of inner tube with the coaxial spiral hole of inner tube, be formed with on the outer inner wall with the helicla flute that the spiral hole corresponds, with the spiral muscle that the spiral hole corresponds certainly the tip spiral installation of spiral hole extremely in the helicla flute, just the outside protrusion of spiral muscle in the outer wall of inner tube inlays to be located in the helicla flute.

Preferably, the outside of inner tube is provided with the location muscle that is on a parallel with its axis, be formed with on the inner wall of outer tube with the constant head tank that the location muscle matches.

Preferably, the locating slot is arranged at the end part of the outer tube, and the locating rib is arranged at the same end of the locating slot.

Preferably, the positioning ribs are provided with at least two.

Preferably, the inner tube is a sealed plastic tube, and the spiral rib is made of hard plastic.

Preferably, the spiral rib is welded and fixed with the inner pipe after being screwed into the spiral hole.

Preferably, the spiral rib and the inner pipe are welded by hot melting.

Preferably, the outer tube is a metal tube or a rubber tube.

Preferably, the inner wall of the outer pipe and the outer wall of the inner pipe are attached.

According to the above technical scheme, the anti-dropping double-layer sealing tube in the invention comprises: outer tube and inner tube, be provided with on the lateral wall of inner tube with the coaxial spiral hole of inner tube, be formed with on the outer inner wall with the helicla flute that the spiral hole corresponds, with the spiral muscle that the spiral hole corresponds certainly the tip spiral installation of spiral hole extremely in the helicla flute, just the outside protrusion of spiral muscle in the outer wall of inner tube inlays to be located in the helicla flute. Through such mode for the sliding force of inner tube circumferential direction all applys on the lateral wall of helicla flute, and only need assemble earlier the inner tube at the in-process of assembly again the spiral muscle can, very convenient, compare in simple with the inner tube welding more simple and convenient on the outer tube, and also need not the outer tube whole change when later stage changes the inner tube.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is an overall structural view of a preferred embodiment of the anti-drop double-layer sealing tube.

Description of the reference numerals

1 inner pipe 2 positioning rib

3 spiral rib 4 spiral groove

And 5, outer tube.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, unless otherwise specified, directional words included in terms such as "upper, lower, left, right, front, rear, inner, and outer" and the like merely represent the directions of the terms in a normal use state or are colloquially known by those skilled in the art, and should not be construed as limiting the terms.

Referring to fig. 1, the anti-separation double-layer sealing pipe includes: outer tube 5 and inner tube 1, be provided with on the lateral wall of inner tube 1 with 1 coaxial spiral hole of inner tube, be formed with on the outer inner wall with the helicla flute 4 that the spiral hole corresponds, with spiral muscle 3 that the spiral hole corresponds from the tip spiral installation extremely in the helicla flute, just the outside protrusion of spiral muscle 3 in the outer wall of inner tube 1 inlays to be located in the helicla flute 4.

Through the implementation of above-mentioned technical scheme for the sliding force of 1 circumferential direction of inner tube all is exerted on the lateral wall of helicla flute 4, and only need assemble earlier inner tube 1 reassembling spiral muscle 3 at the in-process of assembly can, very convenient compares in simple and convenient more of welding inner tube 1 on outer tube 5, and also need not change outer tube 5 wholly when later stage changes inner tube 1.

In this embodiment, in order to match the position of the spiral hole with the position of the spiral groove 4, it is preferable that the outer side of the inner tube 1 is provided with a positioning rib 2 parallel to the axis thereof, and the inner wall of the outer tube 5 is formed with a positioning groove matching with the positioning rib 2.

In this embodiment, the length of the positioning groove does not need to extend through the entire outer tube 5 along the length direction of the outer tube 5, and in order to avoid leakage at the position of the positioning groove, it is preferable that the positioning groove is disposed at the end of the outer tube 5, and the positioning rib 2 is disposed at the same end of the positioning groove.

In this embodiment, in order to make the positioning more accurate when the inner pipe 1 is installed, it is preferable that the positioning ribs 2 be provided with at least two.

In this embodiment, in order to obtain a better sealing effect, and simultaneously avoid corrosion of the spiral rib 3, and increase the sealing performance between the spiral rib 3 and the spiral hole, preferably, the inner tube 1 is a sealed plastic tube, and the spiral rib 3 is made of hard plastic.

In this embodiment, the inner pipe 1 and the outer pipe 5 may be connected by welding for increasing the connection strength, and for better welding stability, the spiral rib 3 is preferably welded and fixed to the inner pipe 1 after being screwed into the spiral hole.

In this embodiment, in order to obtain better welding stability, it is preferable to use thermal welding between the spiral rib 3 and the inner pipe 1. In this case, a spiral hot-melt welding rod may be used for the spiral rib 3.

In this embodiment, the material of the outer tube 5 may be selected in a wide range as required, and preferably, the outer tube 5 is a metal tube or a rubber tube.

In this embodiment, in order to obtain better sealing performance, it is preferable that the inner wall of the outer tube 5 and the outer wall of the inner tube 1 are attached.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.