Shield segment grouting sleeve based on one-way valve

Abstract

The utility model discloses a shield segment grouting sleeve based on a one-way valve, which belongs to the technical field of underground engineering shield segment production, manufacture and application, and comprises a sleeve body, one end in the sleeve body is connected with an annular bulge; the check valve is movably arranged in the casing pipe body; the non-return spring is arranged in the sleeve body; one end of the check spring abuts against the annular protrusion in the sleeve body, and the other end of the check spring is connected with the check valve so that the check function of the check valve can be achieved. According to the shield segment grouting sleeve based on the one-way valve, in the grouting operation process, grouting can be easily achieved through the piston type valve structure, meanwhile, quick response can be achieved when slurry needs to be blocked, and operation is easy, convenient and quick; by means of the design, the difficulty and complexity of operation are greatly reduced, the working efficiency is improved, and an operator can complete various grouting tasks more easily.

Description

Technical Field

[0001] This utility model belongs to the field of underground engineering shield tunnel segment production, manufacturing and application technology, specifically relating to a shield tunnel segment grouting sleeve based on a one-way valve. Background Technology

[0002] In underground engineering construction and shield tunnel construction, grouting behind the tunnel wall is carried out through grouting holes. Currently, the traditional segment grouting mechanism consists of grouting pipes and grouting sleeves, etc. However, the existing traditional grouting sleeves have many problems. The check valve has a simple structure and insufficient strength. In actual engineering applications, the valve is prone to deformation, which can lead to problems such as uneven grout injection and grout backflow. Utility Model Content

[0003] To solve the above problems, the present invention adopts the following technical solution:

[0004] A shield tunnel segment grouting sleeve based on a one-way valve, comprising:

[0005] A casing body, one end of which is connected to an annular protrusion;

[0006] A check valve, wherein the check valve is movably disposed within the casing body;

[0007] A check spring is disposed inside the casing; one end of the check spring abuts against an annular protrusion inside the casing, and the other end is connected to the check valve to realize the check valve's check function.

[0008] Furthermore, the casing body includes a casing shell, a water-stop rubber, and a valve sealing ring; the valve sealing ring is connected to one end of the casing shell and communicates with the casing shell; the water-stop rubber is disposed inside the valve sealing ring and fits against the inner wall of the valve sealing ring;

[0009] The check valve is movably disposed within the casing near one end of the valve sealing ring; the check spring is disposed within the casing; the first end of the check spring abuts against an annular protrusion within the casing, and the second end extends axially along the casing and connects to the check valve to achieve the check valve's check function.

[0010] Furthermore, the check spring is compressed within the sleeve housing.

[0011] Furthermore, the water-stopping rubber is adapted to the inner wall of the valve sealing ring and is fixedly connected to the inner wall of the valve sealing ring by the pipe sheet adhesive.

[0012] Furthermore, the check valve has a spherical structure; the diameter of the check valve is larger than the inner diameter of the valve sealing ring, so that the check valve can close the valve sealing ring.

[0013] Furthermore, the outer casing of the sleeve is a steel sleeve casing.

[0014] Beneficial effects:

[0015] (1) The shield tunnel segment grouting sleeve based on a one-way valve provided by this utility model adopts an advanced piston structure, which is reasonably designed and extremely convenient to use. During the grouting operation, the piston valve structure can easily realize the injection of grout, and at the same time, it can respond quickly when it is necessary to block the grout to prevent grout backflow. The operation is simple and quick. This design greatly reduces the difficulty and complexity of the operation, improves the work efficiency, and enables operators to complete various grouting tasks more easily.

[0016] (2) The structure of this utility model is simple and clear. Each component is carefully designed and manufactured, and has extremely high strength and durability. The connection between each component is stable and reliable, which effectively avoids the defects of insufficient connection strength, easy loosening or falling off that are common in traditional sleeves. This makes the structure more robust and durable, not easily damaged by external factors, and able to maintain stable performance and use status for a long time.

[0017] (3) The overall design of this utility model is meticulous and made of high-quality materials. It has excellent durability and can withstand the pressure and wear caused by multiple grouting operations. It can always maintain stable performance and condition, making this structure particularly suitable for occasions that require frequent grouting operations. It can meet the usage requirements for a long time and provide strong guarantee for the quality and progress of the project. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the shield tunnel segment grouting sleeve based on a one-way valve according to this utility model.

[0019] Figure 2 This is a schematic diagram of the casing shell of the shield tunnel segment grouting casing based on a one-way valve according to this utility model.

[0020] Figure 3 This is a schematic diagram of the spherical check valve structure of the shield tunnel segment grouting sleeve based on a one-way valve according to this utility model.

[0021] Figure 4 This is a schematic diagram of the overall structure of the spherical check valve and check spring connection of the shield tunnel segment grouting sleeve based on the one-way valve of this utility model.

[0022] Among them, 1. casing body; 11. casing shell; 12. water-stop rubber; 13. valve sealing ring; 2. check valve; 3. check spring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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 described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are used only for the convenience of describing this utility model and for 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. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] Example 1

[0028] like Figures 1 to 4 As shown, a shield tunnel segment grouting sleeve based on a one-way valve includes:

[0029] The casing body 1 has an annular protrusion connected to one end inside the casing body 1.

[0030] Check valve 2 is movably disposed inside the casing 1;

[0031] Check spring 3 is installed inside the casing 1; one end of check spring 3 abuts against the annular protrusion inside the casing 1, and the other end is connected to check valve 2 so that check valve 2 can move inside the casing 1 to realize the check function of check valve 2.

[0032] In this embodiment, the casing body 1 includes a casing shell 11, a water-stop rubber 12, and a valve sealing ring 13; the valve sealing ring 13 is connected to one end of the casing shell 11 and communicates with the casing shell 11; the water-stop rubber 12 is disposed inside the valve sealing ring 13 and fits against the inner wall of the valve sealing ring 13.

[0033] Check valve 2 is movably disposed inside the casing 11 near one end of valve sealing ring 13; check spring 3 is disposed inside the casing 11; the first end of check spring 3 abuts against an annular protrusion inside the casing 11, and the second end extends along the axial direction of the casing 11 and connects to check valve 2 to realize the check function of check valve 2.

[0034] Preferably, the valve sealing ring 13 is made of rubber material.

[0035] Preferably, the outer casing 1 is a steel outer casing.

[0036] In this embodiment, the natural elongation of the check spring 3 is greater than the length inside the sleeve housing 11, so that the check spring 3 is in a compressed state inside the sleeve housing 11.

[0037] With the above technical solution, in the initial state, the check valve 2 compresses the check spring 3, so that the check spring 3 is in a compressed state in the sleeve housing 11, and at the same time, the check valve 2 is exposed in the valve sealing ring 13.

[0038] In this embodiment, the water-stop rubber 12 is adapted to the inner wall of the valve sealing ring 13 and is fixedly connected to the inner wall of the valve sealing ring 13 by the pipe sheet adhesive.

[0039] Through the above technical solution, the water-stop rubber 12 is fixedly connected to the inner wall of the valve sealing ring 13, so that the check valve 2 abuts against the water-stop rubber 12 inside the valve sealing ring 13 to prevent the slurry from flowing back.

[0040] In this embodiment, the check valve 2 has a spherical structure; the diameter of the check valve 2 is larger than the inner diameter of the valve sealing ring 13, so that the check valve 2 can close the valve sealing ring 13.

[0041] With the above technical solution, the diameter of the check valve 2 is larger than the inner diameter of the valve sealing ring 13. This causes the check spring 3 to be further compressed when the grouting pipe extends into the grouting sleeve of the shield segment and contacts the spherical check valve 2. This causes the spherical check valve 2 to separate from the valve sealing ring 13, allowing the grout to enter. After grouting is completed, the grouting pipe leaves the spherical check valve 2. Under the rebound action of the check spring 3, the spherical check valve 2 resets and tightly contacts the valve sealing ring 13 again, preventing the grout from flowing back.

[0042] This utility model provides a shield tunnel segment grouting sleeve based on a one-way valve. The installation and use process of this shield tunnel segment grouting sleeve is as follows:

[0043] S1. The water-stop rubber 12 and the valve sealing ring 13 are glued and fixed to the casing shell 11 using common pipe segment adhesive;

[0044] S2. Weld the check spring 3 to the sleeve housing 11 and the ball check valve 2 to form a whole, and ensure that the spring is under pressure and that the ball check valve 2 and the valve rubber sealing ring are in tight contact.

[0045] S3. Embed the entire grouting sleeve into the segment template and pour the segments;

[0046] S4. When the grouting operation begins, the grouting pipe extends into the grouting hole. After applying pressure to the ball check valve 2, the return spring contracts, and a gap appears between the ball check valve 2 and the casing 11, allowing the grout to enter smoothly.

[0047] S5. After grouting is completed, the grouting pipe leaves the ball check valve 2, the check spring 3 rebounds and resets, and the ball check valve 2 is once again tightly pressed against the valve sealing ring 13 to prevent grout backflow.

[0048] The above are merely preferred embodiments of the present utility model and do not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A grouting sleeve for tunnel segments based on a one-way valve, characterized in that, include: A casing body, one end of which is connected to an annular protrusion; A check valve, wherein the check valve is movably disposed within the casing body; A check spring is disposed inside the casing; one end of the check spring abuts against an annular protrusion inside the casing, and the other end is connected to the check valve to realize the check valve's check function.

2. The shield tunnel segment grouting sleeve based on a one-way valve according to claim 1, characterized in that, The casing body includes a casing shell, a water-stop rubber, and a valve sealing ring; the valve sealing ring is connected to one end of the casing shell and communicates with the casing shell; the water-stop rubber is disposed inside the valve sealing ring and fits against the inner wall of the valve sealing ring; The check valve is movably disposed within the casing near one end of the valve sealing ring; the check spring is disposed within the casing; the first end of the check spring abuts against an annular protrusion within the casing, and the second end extends axially along the casing and connects to the check valve to achieve the check valve's check function.

3. The shield tunnel segment grouting sleeve based on a one-way valve according to claim 2, characterized in that, The check spring is compressed inside the sleeve housing.

4. The shield tunnel segment grouting sleeve based on a one-way valve according to claim 2, characterized in that, The water-stop rubber is adapted to the inner wall of the valve sealing ring and is fixedly connected to the inner wall of the valve sealing ring by the pipe sheet adhesive.

5. The shield tunnel segment grouting sleeve based on a one-way valve according to claim 2, characterized in that, The check valve has a spherical structure; the diameter of the check valve is larger than the inner diameter of the valve sealing ring, so that the check valve can close the valve sealing ring.

6. The shield tunnel segment grouting sleeve based on a one-way valve according to claim 2, characterized in that, The outer casing of the sleeve is a steel sleeve casing.

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