Intermediate joint for preventing cable embedded steel pipe from being blocked during grouting

Abstract

The utility model relates to an intermediate joint for preventing a cable embedded steel pipe from being blocked during grouting, which comprises a pipe sleeve, a first rubber sleeve arranged in the middle of the inner wall of the pipe sleeve, second rubber sleeves connected with the first rubber sleeve arranged at the top and the bottom of the inner wall of the pipe sleeve, and a limiting ring arranged in the middle of the inner wall of the first rubber sleeve. A flange extending out of the pipe sleeve and turned outwards is arranged on the side, away from the first rubber sleeve, of the second rubber sleeve, a fastening mechanism is installed at the end of the outer wall of the pipe sleeve, and the embedded steel pipe is inserted into the pipe sleeve, limited through a limiting ring and fixed through the fastening mechanism. The connecting structure is convenient to install, and the embedded steel pipe is good in connecting and sealing performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical installation technical field especially relates to an intermediate joint for preventing cable pre -buried steel pipe grouting pipe block. BACKGROUND

[0002] In the electrical professional construction process, some construction drawings require that cables are installed in the wall, and in order to protect the cable from damage and to facilitate maintenance and replacement of the cable in the future, the cable cannot be directly laid in the concrete. The standard method is to first embed a conduit and then lay the cable in the conduit. Pre -buried pipes come in various materials. Compared to plastic pipes, pre -buried steel pipes often have concrete blockage during construction, which causes great inconvenience to cable laying.

[0003] The reason is that during actual construction at the construction site, the connection method of the pre -buried steel pipe is usually threaded connection, sleeve connection, etc. The sleeve connection has bolt fixation and welding fixation. The bolt fixation has poor sealing performance and cannot guarantee that there is no concrete slurry backflow in the pipe. The welding fixation has the limitation that steel pipes with a wall thickness of less than 2 mm cannot be welded. During the construction process of thick -walled steel pipes, some construction personnel do not perform welding in order to save time and instead use adhesive tape sealing and other irregular operations. Therefore, the pre -buried steel pipe at the construction site often has a blockage phenomenon, which is not conducive to the laying of the cable in the future. SUMMARY

[0004] The utility model aims at solving the prior art's insufficient and provides an intermediate joint for preventing cable pre -buried steel pipe grouting pipe block.

[0005] In order to achieve the above -mentioned purpose, the utility model adopts the following technical scheme: an intermediate joint for preventing cable pre -buried steel pipe grouting pipe block, including the sleeve, the first rubber cover is equipped in the middle part of the sleeve inner wall, the second rubber cover is equipped at the top and bottom of the sleeve inner wall and is connected with the first rubber cover, the middle of the first rubber cover inner wall is equipped with a limiting ring, the side away from the first rubber cover of the second rubber cover is equipped with the baffle edge that protrudes the sleeve and turns outside, the fastening mechanism is installed at the end of the sleeve outer wall, the pre -buried steel pipe is inserted into the sleeve and is limited through the limiting ring, and is fixed through the fastening mechanism.

[0006] In particular, the thickness of the pre -buried steel pipe is the same as the thickness of the limiting ring.

[0007] In particular, the vertical inner side wall of the second rubber cover is flush with the inner wall of the first rubber cover, and the vertical outer side wall is inclined outward.

[0008] In particular, the end of the sleeve is an elastic metal sleeve, the second rubber cover is arranged in the inner wall of the elastic metal sleeve, and the baffle edge is in contact with the elastic metal sleeve.

[0009] Specifically, the fastening mechanism includes a threaded portion located on the outside of the elastic metal sleeve. The thickness of the threaded portion gradually increases along the inclined direction of the vertical sidewall of the second rubber sleeve, and a self-tightening nut is threaded onto the threaded portion.

[0010] The beneficial effects of this utility model are as follows: By setting a first rubber sleeve, a second rubber sleeve, a retaining edge, a limiting ring, an elastic metal sleeve, and a fastening mechanism, this utility model is more convenient and faster to install during construction compared with traditional bolt-fixed pipe sleeves and welded fixed pipe sleeves, and greatly enhances the sealing performance of the pipe sleeve, solving the problem of grout backflow causing pipe blockage during concrete pouring of pre-embedded steel pipes. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the connection between the self-tightening nut and the threaded part of this utility model;

[0012] Figure 2 for Figure 1 A cross-sectional view of the structure shown;

[0013] Figure 3 This is a schematic diagram showing the self-tightening nut and threaded part of this utility model not being connected;

[0014] Figure 4 for Figure 3 A cross-sectional view of the structure shown;

[0015] Figure 5 for Figure 1 Top view of the structure shown;

[0016] In the diagram: 1-pipe sleeve; 2-first rubber sleeve; 3-second rubber sleeve; 4-limiting ring; 5-flange; 6-embedded steel pipe; 7-elastic metal sleeve; 8-threaded part; 9-self-tightening nut;

[0017] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] like Figures 1-5 As shown, an intermediate joint for preventing grout blockage of pre-embedded steel pipes for cables includes a sleeve 1. A first rubber sleeve 2 is provided in the middle of the inner wall of the sleeve 1. A second rubber sleeve 3 connected to the first rubber sleeve 2 is provided at the top and bottom of the inner wall of the sleeve 1. A limiting ring 4 is provided in the middle of the inner wall of the first rubber sleeve 2. The thickness of the pre-embedded steel pipe 6 is the same as the thickness of the limiting ring 4. A retaining edge 5 extending outward and turned outward from the side of the second rubber sleeve 3 away from the first rubber sleeve 2 is provided to prevent the sleeve 1 from falling off. A fastening mechanism is installed at the end of the outer wall of the sleeve 1. The pre-embedded steel pipe 6 is inserted into the sleeve 1 and limited by the limiting ring 4 and fixed by the fastening mechanism.

[0020] The vertical inner side wall of the second rubber sleeve 3 is flush with the inner wall of the first rubber sleeve 2, and the vertical outer side wall is outwardly inclined, the end of the pipe sleeve 1 is an elastic metal sleeve 7, the second rubber sleeve 3 is arranged on the inner wall of the elastic metal sleeve 7, the flange 5 is in contact with the elastic metal sleeve 7, and the fastening mechanism comprises a threaded portion 8 arranged on the outer side of the elastic metal sleeve 7, the thickness of the threaded portion 8 gradually increases along the inclined direction of the vertical side wall of the second rubber sleeve 3, and the threaded portion 8 is threadedly connected with a self-tightening nut 9.

[0021] During the working of the utility model, the end of the embedded steel pipe 6 is inserted into the pipe sleeve 1 and is limited by the limiting ring 4, then the self-tightening nut 9 is rotated, the elastic metal sleeve 7 is pressed when the self-tightening nut 9 is rotated, the elastic metal sleeve 7 presses the second rubber sleeve 3, and the connection fastening and the sealing performance between the embedded steel pipe 6 and the pipe sleeve 1 are guaranteed. Compared with the traditional bolt-fixed pipe sleeve and the welded pipe sleeve, the utility model is more convenient and fast to install in construction, greatly enhances the sealing performance of the pipe sleeve 1, and solves the problem that the embedded steel pipe 6 is blocked in the slurry pouring process of concrete. The application of the novel intermediate joint can reduce a large amount of work, optimize the construction period plan, improve the construction quality of the project, avoid the rework condition, and thus the purpose of saving the engineering cost is achieved.

[0022] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, and therefore cannot be understood as a limitation on the utility model.

[0023] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0024] In the utility model, unless another definite provision and limitation, the term " install " " link " " connect " " fixed " and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be two element inside's intercommunication or two element's interaction relation, unless another definite limitation. For ordinary skilled person in the art, can understand the above-mentioned term in the utility model specific meaning according to specific circumstances.

[0025] The utility model has been described above in conjunction with the drawings, obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, as long as various improvements using the method concept and technical scheme of the utility model or direct application in other occasions without improvement are all within the protection scope of the utility model.

Claims

1. An intermediate joint for preventing the pipe blockage of cable embedded steel pipe grouting, comprising a pipe sleeve (1), characterized in that, The first rubber sleeve (2) is arranged in the middle of the inner wall of the pipe sleeve (1), the second rubber sleeve (3) is arranged at the top and bottom of the inner wall of the pipe sleeve (1) and connected with the first rubber sleeve (2), the limiting ring (4) is arranged in the middle of the inner wall of the first rubber sleeve (2), the flange (5) is arranged on the side of the second rubber sleeve (3) away from the first rubber sleeve (2) and extends out of the pipe sleeve (1) and turns outward, the fastening mechanism is arranged on the outer wall of the end of the pipe sleeve (1), the embedded steel pipe (6) is inserted into the pipe sleeve (1) and limited by the limiting ring (4) and fixed by the fastening mechanism.

2. The intermediate joint for preventing the pipe from being blocked by the grouting of the embedded steel pipe of the cable according to claim 1, characterized in that, The thickness of the embedded steel pipe (6) is the same as the thickness of the limiting ring (4).

3. The intermediate joint for preventing the pipe from being blocked by the grouting of the embedded steel pipe of the cable according to claim 1, characterized in that, The vertical inner side wall of the second rubber sleeve (3) is flush with the inner wall of the first rubber sleeve (2), and the vertical outer side wall is arranged outwardly inclined.

4. The intermediate joint for preventing the pipe from being blocked by the grouting of the embedded steel pipe of the cable according to claim 3, characterized in that, The end of the pipe sleeve (1) is the elastic metal sleeve (7), the second rubber sleeve (3) is arranged in the inner wall of the elastic metal sleeve (7), and the flange (5) is in contact with the elastic metal sleeve (7).

5. The intermediate joint for preventing the pipe from being blocked by the grouting of the embedded steel pipe of the cable according to claim 4, characterized in that, The fastening mechanism comprises the threaded part (8) arranged on the outer side of the elastic metal sleeve (7), the thickness of the threaded part (8) gradually increases along the inclined direction of the vertical side wall of the second rubber sleeve (3), and the self-fastening nut (9) is threadedly connected on the threaded part (8).

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