Novel grouting needle

Abstract

A novel grouting needle mainly comprises a needle tube (2) and a handle (4), the bottom of the needle tube (2) is provided with a needle tip (1) used for being inserted into a duct piece gap, a needle tube connecting piece (3) used for connecting the handle (4) and the needle tube (2) is arranged between the handle (4) and the needle tube (2), and the top end of the handle (4) is provided with a spherical connector (5). The needle tube (2) is provided with a marking area (12) used for marking the insertion depth of the needle tube (2), and a sealing ring (6) used for sealing is arranged between the needle tube (2) and the needle tube connecting piece (3). The utility model has the beneficial effects that the common problems of easy blockage and inaccurate insertion depth in the traditional grouting process are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of seepage control treatment, in particular to a novel grouting needle. BACKGROUND

[0002] In tunnel construction, grouting technology between shield tunnel segments is extremely important to ensure structural stability and waterproof performance. However, traditional grouting methods have some significant problems that not only affect construction efficiency but also may pose a threat to the long-term stability and safety of the tunnel. The traditional grouting method is difficult to accurately control the grouting position and grouting amount, resulting in unsatisfactory grouting effect. In addition, the operation is complex, the grouting process is tedious, and more manual operation is required, increasing the construction difficulty and time. Also, grouting is not smooth: the existing grouting head is prone to blockage of the grouting channel due to design problems such as bead design. And the insertion depth is not clear: there is no clear marker to indicate the depth to which the needle tube should be inserted, resulting in inaccurate needle tube insertion position.

[0003] In order to solve these problems, domestic researchers have conducted a lot of research. For example, patent publication number CN218780007U proposes a solution for a deformation joint grouting needle. This grouting needle includes a grouting head, an adapter, and a needle. Among them, the first joint is fixed and sealed on the needle head and cooperates with the adapter, and the second joint is fixed and sealed on the grouting head and cooperates with the adapter. The adapter is detachably connected between the first joint and the second joint. The needle is a 3mm diameter hollow metal tube. The advantage of this design is that it can directly grout the deformation joint that needs to be grouted, and it is done at one time. The operation is simple and convenient. The small incision will not damage the deformation joint itself.

[0004] Although this design improves the grouting process to some extent, there are still some problems, such as easy blockage when preventing leakage in tunnels, and inability to ensure that the needle tube is inserted to the appropriate position. These problems still need further research and improvement. UTILITY MODEL CONTENTS

[0005] The utility model provides a novel grouting needle, which can solve the problems of easy blockage and inappropriate insertion depth during grouting, as well as leakage of the needle tube and handle.

[0006] In order to achieve the above object, the following technical scheme is adopted, a novel grouting needle mainly comprises a needle tube (2) and a handle (4), the bottom of the needle tube (2) is provided with a needle tip (1) for inserting into the gap between two pipe pieces, the handle (4) is provided with a needle tube connector (3) for connecting the needle tube (2), and the top end of the handle (4) is provided with a spherical connector (5); characterized in that the needle tube (2) is provided with a mark area (12) for marking the insertion depth of the needle tube (2), and the needle tube (2) and the needle tube connector (3) are provided with a sealing ring (6) for sealing.

[0007] Further, the top end of the needle tube (2) is provided with a needle tube threaded area (7) for connecting with the needle tube connector (3), and the lower end of the needle tube threaded area (7) is provided with a stop block (8) for preventing excessive connection of the needle tube (2) and the needle tube connector (3).

[0008] Further, the inside of the needle tube (2) is provided with a needle hole (9) in communication with a handle through hole (10) in the inside of the handle (4), and the top end of the connector (5) is provided with a connector hole (11).

[0009] Further, the diameters of the needle hole (9) and the connector hole (11) are 3mm.

[0010] Further, the handle (4) and the needle tube (2) are made of steel.

[0011] Further, the length of the needle tube (2) is greater than the thickness of the pipe piece.

[0012] The beneficial effects of the novel grouting needle are as follows:

[0013] The novel grouting needle can effectively solve the problems of easy blockage and inaccurate insertion depth in the traditional grouting process, the insertion depth is marked to improve the grouting precision, the spherical head is easy to connect with the grouting machine, the sealing part enhances the sealing property, and the structure for preventing excessive connection avoids the needle tube from sliding. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the novel grouting needle;

[0015] Figure 2 It is Figure 1 a exploded view;

[0016] Figure 3 It is Figure 2 a sectional view of A direction in the figure;

[0017] 1: Needle tip, 2: Needle tube, 3: Needle tube connector, 4: Handle, 5: Connector, 6: Sealing ring, 7: Needle tube thread area, 8: Stop, 9: Needle hole, 10: Handle through hole, 11: Connector hole, 12: Marking area. Detailed Implementation

[0018] like Figure 1 As shown, a novel grouting needle mainly includes a needle tube (2) and a handle (4). A needle tip (1) for insertion into the gap of the pipe section is provided at the bottom of the needle tube (2). A needle tube connector (3) for connecting the handle (4) and the needle tube (2) is provided. A spherical connector (5) is provided at the top of the handle (4) for connecting to a grouting machine. A marking area (12) for indicating the insertion depth of the needle tube (2) is also provided on the needle tube (2).

[0019] like Figure 2 As shown, a sealing ring (6) for sealing is provided between the needle tube (2) and the needle tube connector (3). A needle tube thread area (7) for connecting with the needle tube connector (3) is provided at the top of the needle tube (2). A stop block (8) for preventing the needle tube (2) from being over-connected with the needle tube connector (3) is provided at the lower end of the needle tube thread area (7).

[0020] like Figure 3 As shown, a needle hole (9) is provided inside the needle tube (2), which is connected to the handle through hole (10) inside the handle (4). A connector hole (11) is provided at the top of the connector (5), thus connecting the connector hole (11), the handle through hole (10), and the needle hole (9) to form the grouting channel of the grouting needle. There are no balls blocking the flow, allowing the grout to pass through. The diameter of the needle hole (9) and the connector hole (11) is 3 mm. The handle (4) and the needle tube (2) are made of steel, and the length of the needle tube (2) is greater than the thickness of the tube.

[0021] In practical use, first insert the needle tip (1) into the gap between the pipe segments, and then use a flat hammer on the connector (5) to insert the grouting needle into the gap between the pipe segments. Since there is a sealing ring (6) on the needle tube (2), when it reaches the vicinity of the sealing ring (6), hammer slowly to ensure that the grouting needle is inserted to the same depth as the sealing ring (6), thereby ensuring that the grouting needle is inserted into the appropriate position. Since the inside of the grouting needle is a through-hole, the grouting liquid will not be blocked inside the grouting needle, and the grouting is very smooth.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments.

Claims

1. A new type of grouting needle, mainly comprising a needle tube (2) and a handle (4), the bottom of the needle tube (2) is provided with a needle tip (1) for inserting into the gap between two pipe segments, the handle (4) is connected with the needle tube (2) through a needle tube connector (3) provided thereon for connecting the two, the top end of the handle (4) is provided with a spherical connector (5), characterized in that, The needle tube (2) is provided with a mark area (12) for identifying the insertion depth of the needle tube (2), and a sealing ring (6) is arranged between the needle tube (2) and the needle tube connector (3) for sealing.

2. A novel grouting needle according to claim 1, characterized in that: The top end of the needle tube (2) is provided with a needle tube threaded area (7) for connecting with the needle tube connector (3), and the lower end of the needle tube threaded area (7) is provided with a stop block (8) for preventing excessive connection of the needle tube (2) and the needle tube connector (3).

3. A novel grouting needle according to claim 2, characterized in that: The inside of the needle tube (2) is provided with a needle hole (9) which is communicated with a handle through hole (10) in the inside of the handle (4), and the top end of the connecting head (5) is provided with a connecting head hole (11).

4. A novel grouting needle according to claim 3, characterized in that: The diameters of the needle hole (9) and the connecting head hole (11) are 3 mm.

5. A novel grouting needle as claimed in claim 1, wherein: The handle (4) and the needle tube (2) are made of steel.

6. A novel grouting needle as claimed in claim 1, wherein: The length of the needle tube (2) is greater than the thickness of the tube sheet.

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