Self-locking type slurry return prevention semi-grouting sleeve

Abstract

The utility model discloses a self-locking type anti-grout-return half grouting sleeve which comprises a grouting pipe, a grout outlet connecting pipe, a grout inlet connecting pipe, tooth surface steel sheets, screw hole blocks and a non-return piece, the two tooth surface steel sheets are welded in ports of the two ends of the grouting pipe in a splayed shape, and the screw hole blocks are welded and fixed to the ports of the two ends of the grouting pipe. And a non-return piece is arranged in a communicated port between the grouting pipe and the grout inlet connecting pipe. The steel bar connecting structure is reasonable in structural design, the elasticity of the tooth surface steel sheets is utilized, the threaded ends of the steel bars can conveniently push the tooth surface steel sheets laterally, the tooth surface structures on the tooth surface steel sheets form a non-return self-locking structure on the threaded structures of the steel bars, the firmness of connection with the steel bars is enhanced, and the service life of the steel bars is prolonged. The non-return piece at the communication port of the slurry inlet connecting pipe is of a plastic conical surface structure with three-leaf gaps, so that grouting backflow is effectively prevented, and the grouting quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of grouting sleeves, specifically a self-locking anti-backflow semi-grouting sleeve. Background Technology

[0002] A grouting sleeve, also known as a grouting sleeve joint or sleeve grouting joint, is an assembly consisting of a specially processed sleeve, matching grouting material, and reinforcing steel bars. When connecting the reinforcing steel bars, a fast-hardening, non-shrink grouting material is injected, relying on the bonding and interlocking effect between the materials to connect the steel bars and the sleeve. Existing grouting sleeves have the potential for grout backflow, which is detrimental to the quality of grouting construction, and they cannot provide reinforcement connections at the ends of the reinforcing steel bars. Therefore, to address these issues, a self-locking, anti-backflow semi-grouting sleeve is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a self-locking anti-backflow semi-grouting sleeve to solve the above problems.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: a self-locking anti-backflow semi-grouting sleeve, comprising a grouting pipe, a grout outlet pipe, a grout inlet pipe, toothed steel plates, screw hole blocks, and a check valve. Two toothed steel plates are welded in a figure-eight shape inside both ends of the grouting pipe, and screw hole blocks are welded and fixed to both ends of the grouting pipe. A check valve is installed in the port connecting the grouting pipe and the grout inlet pipe.

[0005] Preferably, the screw hole block has a reinforcing bar connected to its internal thread.

[0006] Preferably, the threaded surface at the end of the reinforcing bar is in close contact with the toothed steel sheet.

[0007] Preferably, the check valve is a plastic cone shape, and the cone surface of the check valve has a three-lobed slit.

[0008] Preferably, a grout outlet pipe is installed on the inner side of one end of the grouting pipe.

[0009] Compared with the prior art, the advantages of this utility model are as follows: by utilizing the elasticity of the toothed steel sheet, it is easy for the threaded end of the reinforcing bar to push against the toothed steel sheet. At the same time, the toothed structure on the toothed steel sheet forms a self-locking anti-return structure with the threaded structure of the reinforcing bar, which enhances the firmness of the connection with the reinforcing bar. The anti-return component at the grout inlet pipe connection port adopts a three-lobed plastic conical structure, which effectively prevents grout backflow and ensures grouting quality. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0013] Figure 3 This is a schematic diagram of the anti-return component structure of this utility model;

[0014] Figure 4 This is a schematic diagram of the overall structure and steel bar connection of this utility model.

[0015] In the diagram: 1. Grouting pipe; 2. Grout outlet pipe; 3. Grout inlet pipe; 4. Toothed steel plate; 5. Screw hole block; 6. Check valve; 7. Reinforcing bar. Detailed Implementation

[0016] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Please see Figure 1-4As shown, a self-locking anti-backflow semi-grouting sleeve includes a grouting pipe 1, a grout outlet pipe 2, a grout inlet pipe 3, toothed steel plates 4, screw hole blocks 5, and a check valve 6. Two toothed steel plates 4 are welded in a figure-eight shape inside both ends of the grouting pipe 1, and screw hole blocks 5 are welded and fixed to both ends of the grouting pipe 1. A check valve 6 is installed in the port connecting the grouting pipe 1 and the grout inlet pipe 3. The check valve 6 is a plastic cone shape, and the cone surface of the check valve 6 has a three-lobed slit.

[0020] Furthermore, the screw hole block 5 has a section of reinforcing bar 7 internally threaded into it.

[0021] Furthermore, the threaded surface at the end of the reinforcing bar 7 is in close contact with the toothed steel sheet 4.

[0022] Furthermore, a grout outlet pipe 2 is connected and installed on the inner side of one end of the grouting pipe 1.

[0023] Compared with existing technologies, the difference lies in the following: the elasticity of the toothed steel plate 4 facilitates the side push of the threaded end of the reinforcing bar 7 against the toothed steel plate 4. At the same time, the toothed structure on the toothed steel plate 4 forms a self-locking anti-return structure for the threaded structure of the reinforcing bar 7, enhancing the firmness of the connection with the reinforcing bar. The anti-return element 6 at the port of the grout inlet pipe 3 adopts a three-lobed plastic conical structure, which effectively prevents grout backflow and ensures grouting quality.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A self-locking anti-backflow semi-grouting sleeve, characterized in that: The grouting pipe (1), the grout outlet pipe (2), the grout inlet pipe (3), the toothed steel plate (4), the screw hole block (5), and the check valve (6) are included. Two toothed steel plates (4) are welded in a figure-eight shape inside both ends of the grouting pipe (1), and screw hole blocks (5) are welded and fixed to both ends of the grouting pipe (1). A check valve (6) is installed in the port connecting the grouting pipe (1) and the grout inlet pipe (3).

2. The self-locking anti-backflow semi-grouting sleeve according to claim 1, characterized in that: The screw hole block (5) has a reinforcing bar (7) connected to its internal thread.

3. A self-locking anti-backflow semi-grouting sleeve according to claim 2, characterized in that: The threaded surface at the end of the reinforcing bar (7) is in close contact with the toothed steel plate (4).

4. The self-locking anti-backflow semi-grouting sleeve according to claim 1, characterized in that: The check valve (6) is a plastic cone shape, and the cone surface of the check valve (6) has a three-lobed slit.

5. A self-locking anti-backflow semi-grouting sleeve according to claim 1, characterized in that: The grouting pipe (1) has a grout outlet pipe (2) installed on the inner side of one end.

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