Flexible waterproof sleeve

Abstract

The utility model provides a flexible waterproof sleeve which comprises a sleeve body coaxially arranged with a working pipe, the inner end of the sleeve body extends into a gap between the working pipe and a sleeve, the outer end of the sleeve body is exposed out of the working pipe, and an outer flange is arranged at the end, exposed out of the working pipe, of the sleeve body; an inner flange is arranged at the tail end of the working pipe, an inner baffle ring is arranged on the inner wall of the working pipe corresponding to the inner end of the cylinder, a sealing piece is arranged between the inner baffle ring and the inner end of the cylinder, the inner flange is connected with the outer flange through a connecting piece, the inner end of the cylinder extrudes the sealing piece, and then the sealing piece is sealed between the sleeve and the working pipe. The end, making contact with the sealing piece, of the barrel is of an arc-shaped end face structure, and a V-shaped groove is formed in the middle of the arc-shaped end face structure and is an annular groove surrounding the circumferential direction of the barrel. The inner flange and the outer flange are connected through the connecting piece, the inner end of the barrel extrudes the sealing piece, then the sealing piece is sealed between the sleeve and the working pipe, sealing between the working pipe and the sleeve is effectively guaranteed, and the waterproof performance is good.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pipeline engineering, and particularly relates to a flexible waterproof sleeve. BACKGROUND

[0002] As an important infrastructure of modern cities, the construction quality of water supply and drainage engineering is increasingly concerned by people. Underground wall penetrating sleeve is often encountered in building water supply and drainage construction, such as water supply and drainage pipe, gas supply pipe, heating pipe, strong and weak current wire pipe, etc. All of them need to be hidden from the outside underground and penetrate the wall into the underground well chamber. When penetrating the wall, there are two requirements, i.e. non-waterproof and waterproof. The wall penetrating sleeve with high waterproof requirement needs strict waterproof sealing measures, otherwise water leakage will occur, which will affect the use function of the structure or the safety of water supply. In the prior art, the sealing performance of the wall penetrating sleeve is poor, and leakage is prone to occur between the sleeve and the working pipe. In addition, it is not easy to perform waterproof sealing treatment during the construction of the wall penetrating sleeve. Therefore, it is necessary to improve the structure of the existing wall penetrating sleeve. SUMMARY

[0003] Therefore, the present application aims to overcome the defects in the prior art and provides a flexible waterproof sleeve.

[0004] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0005] A flexible waterproof sleeve comprises a sleeve body coaxially arranged with a working pipe, the inner end of the sleeve body extends into the gap between the working pipe and the sleeve, the outer end of the sleeve body is exposed to the working pipe, and an outer flange is arranged at the end of the sleeve body exposed to the working pipe; an inner flange is arranged at the end of the working pipe, an inner stop ring is arranged on the inner wall of the working pipe corresponding to the inner end of the sleeve body, a sealing element is arranged between the inner end of the sleeve body and the inner stop ring, the inner flange and the outer flange are connected by a connecting element, the inner end of the sleeve body extrudes the sealing element, thereby forming a seal between the sleeve and the working pipe, and the end of the sleeve body contacting the sealing element adopts an arc-shaped end face structure, a V-shaped groove is arranged in the middle of the arc-shaped end face structure, and the V-shaped groove is a ring groove around the circumference of the sleeve body.

[0006] Further, the inner diameter of the inner stop ring is the same as the inner diameter of the sleeve body.

[0007] Further, the sealing element adopts a sealing ring.

[0008] Further, the sealing element adopts two sealing rings arranged side by side, or three sealing rings arranged side by side.

[0009] Further, the outer diameter of the inner flange is the same as the outer diameter of the outer flange, and a connecting hole for penetrating the connecting element is arranged on the inner flange and the outer flange.

[0010] Further, the connecting element adopts a bolt.

[0011] Further, the barrel body is formed by welding two half-circular sleeve parts, and the outer flange comprises half-circular outer flange parts welded on each sleeve part.

[0012] Compared with the prior art, the application has the following advantages:

[0013] The application has the advantages of simple structure and reasonable design, the inner flange is connected with the outer flange through the connecting piece, the inner end of the barrel body extrudes the sealing piece, and then the sealing piece forms a seal between the sleeve and the working pipe, effectively ensuring the seal between the working pipe and the sleeve, and having good waterproof performance. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application and are incorporated herein for illustrative purposes. The illustrative embodiments of the present application and their description serve to explain the present application. In the drawings:

[0015] Fig. 1 Structure schematic view for application of the present application;

[0016] Fig. 2 Schematic view for the present application provided with a conical support ring;

[0017] Fig. 3 Structure schematic view of the conical support ring in the present application;

[0018] Fig. 4 Structure schematic view of the barrel body in the present application;

[0019] Fig. 5 Structure schematic view of the half-circular sleeve part in the present application;

[0020] Fig. 6 Schematic view of the arc-shaped end face structure part in the present application. DETAILED DESCRIPTION

[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the description of the present application, it is to be understood by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" and the like can be explicitly or implicitly included one or more. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0023] In the description of the present application, it is to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0025] A flexible waterproof sleeve, as shown in Figs. 1 to 6 includes a sleeve 2 coaxially arranged with a working pipe 1, the inner end of the sleeve extends into the gap between the working pipe and the sleeve, the outer end of the sleeve is exposed to the working pipe, and an outer flange 3 is provided at the end of the sleeve exposed to the working pipe. Generally, the outer diameter of the inner flange is the same as that of the outer flange, and a connecting hole for passing a connecting member is provided on the inner flange and the outer flange.

[0026] In order to facilitate the installation of the flexible waterproof sleeve on the sleeve, the sleeve is formed by welding two semicircular sleeve halves 7, the outer flange includes a semicircular outer flange half welded on each sleeve half, and the inner flange includes a semicircular inner flange half welded on the working pipe.

[0027] The inner flange 4 is provided at the end of the working pipe, and an inner retaining ring 5 is provided on the inner wall of the working pipe corresponding to the inner end of the sleeve. Preferably, the inner diameter of the inner retaining ring is the same as the inner diameter of the sleeve. A sealing member 6 is provided in the working area between the inner retaining ring and the inner end of the sleeve. The inner flange is connected to the outer flange by a connecting member, the inner end of the sleeve is pressed against the sealing member, and the sealing member is sealed between the sleeve and the working pipe. As an example, the connecting member is a bolt.

[0028] Generally, the sealing member adopts a sealing ring. In a further improved solution, in order to improve the sealing performance, the sealing member can adopt one sealing ring, or two sealing rings arranged side by side, or three sealing rings arranged side by side, and the number of the sealing rings can be adjusted according to the depth of the cylinder inserted into the working cylinder.

[0029] And, as shown in Figs. 4 to 6 , one end of the cylinder contacts the sealing member and adopts an arc-shaped end surface structure 12, and a V-shaped groove 13 is arranged in the middle of the arc-shaped end surface structure, which is a ring groove around the circumferential direction of the cylinder, and the side wall of the V-shaped groove is connected to the surface of the arc-shaped end surface structure through a circular arc 14. During the process of inserting the cylinder into the working pipe, the arc-shaped end surface structure contacts the sealing member, and as the cylinder is inserted inward, the arc-shaped end surface structure extrudes the sealing member, so that the sealing member is in full contact with the sleeve and the working pipe, thereby forming a seal. The arc-shaped end surface structure will not damage the sealing member, and the sealing member is partially extruded into the V-shaped groove, which can improve the friction between the sealing member and the end surface of the cylinder, effectively improve the stability of the combination between the sealing member and the cylinder, and avoid the separation of the sealing member from the working area.

[0030] The construction method of the flexible waterproof sleeve includes the following steps:

[0031] A stop ring is welded and fixed on the inner wall of the working pipe, and two half inner flange parts 8 are welded at the end of the working pipe to form an inner flange;

[0032] The two half circular sleeve parts are buckled on the outside of the sleeve pipe and welded to form a cylinder;

[0033] Then, two half outer flange parts 9 are welded at the end of the cylinder to form an outer flange;

[0034] Finally, bolts are installed between the inner flange and the outer flange, nuts are installed on the bolts, the inner end of the cylinder is pressed against the sealing member by tightening the nuts, and the sealing member is pressed between the cylinder and the stop ring to form a reliable seal.

[0035] In order to improve the stability of the cylinder structure, in an alternative embodiment, as shown in Fig. 2 and Fig. 3 , a conical support ring 10 is arranged between the sleeve pipe and the cylinder, which is located at the end of the cylinder away from the sealing member. The small-diameter end of the conical support ring extends into the inside of the cylinder, and the end of the small-diameter end is provided with a ring-shaped sealing support structure 11. The conical support ring effectively supports the cylinder. As an example, the conical support ring is made of nylon material, and the ring-shaped sealing support structure is vulcanized on the conical support ring by using rubber material.

[0036] The application has simple structure and reasonable design, the inner flange and the outer flange are connected through the connecting piece, the inner end of the cylinder body extrudes the sealing element, and then the sealing element forms sealing between the sleeve pipe and the working pipe, effectively guarantees the sealing between the working pipe and the sleeve pipe, has good waterproof performance, the relative position between the sealing element, the cylinder body and the stop ring can be adjusted according to needs, has strong adaptability and good universality, the cylinder body is easy to install and operate, and is easy to implement.

[0037] The above merely describes the preferred embodiments of the application, and is not intended to limit the application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A flexible waterproof sleeve, characterized by: The device comprises a barrel coaxially arranged with a working tube, an inner end of the barrel extending into a gap between the working tube and a sleeve, an outer end of the barrel exposed outside the working tube, and an outer flange arranged at one end of the barrel exposed outside the working tube; an inner flange is arranged at a terminal end of the working tube, an inner stop ring is arranged on an inner wall of the working tube corresponding to the inner end of the barrel, a sealing element is arranged between the inner end of the barrel and the inner stop ring, the inner flange is connected with the outer flange through a connecting element, the inner end of the barrel extrudes the sealing element, and the sealing element is sealed between the sleeve and the working tube, and an arc-shaped end face structure is arranged at one end of the barrel contacting the sealing element, a V-shaped groove is arranged in the middle of the arc-shaped end face structure, and the V-shaped groove is a ring groove surrounding a circumferential direction of the barrel.

2. A flexible waterproof sleeve according to claim 1, characterized in that: The inner diameter of the inner stop ring is the same as the inner diameter of the barrel.

3. A flexible waterproof sleeve as claimed in claim 1, wherein: The sealing element is a sealing ring.

4. A flexible waterproof sleeve according to claim 3, wherein: The sealing element is two sealing rings arranged side by side, or the sealing element is three sealing rings arranged side by side.

5. The flexible waterproof sleeve of claim 1, wherein: The outer diameter of the inner flange is the same as the outer diameter of the outer flange, and a connecting hole for penetrating the connecting element is arranged on the inner flange and the outer flange.

6. A flexible waterproof sleeve as claimed in claim 1, wherein: The connecting element is a bolt.

7. A flexible waterproof sleeve as claimed in claim 1, wherein: The barrel is formed by welding two half-cylindrical sleeves, and the outer flange comprises half-cylindrical outer flange halves welded on each sleeve half.

Images