A grouting device with detachable needle

Abstract

The utility model provides a kind of grouting device of detachable needle, mainly including needle tube (1), needle tube connecting piece (2), needle body (3) and connector (4), wherein needle tube (1) is connected with needle body (3) by needle tube connecting piece (2), is located the lowermost end of grouting device, connector (4) is located the top of needle body (3), the upper portion of the connector (4) is equipped with the round ball head (4-3) for being connected with grouting pipe, it is characterized by: the length of the needle tube (1) is not more than the quarter of grouting device total length, the length of needle body (3) is greater than the three quarters of grouting device, and no check device is arranged in the inside of grouting device.It has beneficial effects that: the utility model can be conveniently and quickly disassembled and replaced, without replacing entire grouting device, save cost.

Description

Technical Field

[0001] This utility model relates to the field of tunnel seepage prevention, specifically a grouting device with replaceable needles. Background Technology

[0002] In underground engineering projects, such as leak prevention in subway tunnels, grouting needles are frequently used. However, existing grouting needles have some significant shortcomings in use. These problems not only affect construction efficiency but may also reduce waterproofing effectiveness and even cause secondary damage. Specifically, traditional grouting needles, due to their thin and long bodies, are easily bent or broken during use, resulting in insufficient structural strength and affecting grouting operations and grout delivery. In addition, some grouting needles have poorly designed grout outlets, which can easily lead to grout seepage in non-target areas.

[0003] To address the aforementioned issues, domestic researchers have undertaken several technological improvements. For example, patent publication number CN214739645U proposes a solution for a waterproof grouting needle that eliminates the need for tile breaking. This grouting needle includes a fixed head, a connector, and a needle tube. The rear end of the fixed head is fixedly connected to the connector, and both have interconnected grouting ports at their centers. The grouting port at the rear end of the connector is connected to the needle tube, which contains a grout channel. Its rear end is sealed, and its outer wall has multiple grout outlets. An expansion port is located at the front of each outlet, and the outer wall of the needle tube is fitted with an elastic sleeve for sealing the expansion port. The advantages of this design are: small pre-drilled holes in the ground, maximizing the preservation of the bathroom floor's aesthetics; rapid installation without the need for wrenches, saving time and effort; and direct control over the depth and range of grout penetration, preventing grout leakage and avoiding grout entering between the tiles and the floor, thus preventing tile bursting and bulging.

[0004] While this design improves grout control and ease of construction, enhancing grouting accuracy and ground integrity to some extent, there is still room for improvement in the structural strength of the grout needle. The slender needle may still be prone to bending under complex conditions, affecting long-term reliability. Therefore, how to further improve the structural strength and durability of the grouting needle while ensuring grouting accuracy remains a direction for future research. Utility Model Content

[0005] This invention provides a grouting device with replaceable needles, which can solve the problem that the needles are easily bent due to being too thin and too long during the grouting process, which seriously affects the work progress and construction quality.

[0006] To achieve the above objectives, the following solution is adopted:

[0007] A grouting device with replaceable needles mainly includes a needle tube (1), a needle tube connector (2), a needle body (3), and a connector (4). The needle tube (1) is connected to the needle body (3) through the needle tube connector (2) and is located at the lowest end of the grouting device. The connector (4) is located at the top of the needle body (3). The upper part of the connector (4) is provided with a ball head (4-3) for connecting to the grouting tube. The device is characterized in that the length of the needle tube (1) does not exceed one-quarter of the total length of the grouting device, the length of the needle body (3) is greater than three-quarters of the length of the grouting device, and no check device is provided inside the grouting device.

[0008] Furthermore, the needle tube (1) has a needle inner hole (1-5) inside. The needle tube (1) has the following components from bottom to top: needle (1-1), needle body (1-2), blocking ring (1-3) and needle connecting thread (1-4). The blocking ring (1-3) is used to prevent the needle tube (1) from being over-screwed and stripped when it is installed on the needle tube connector (2).

[0009] Furthermore, the needle tube connector (2) mainly includes a limiting head (2-1) and a connector thread (2-2). The bottom of the needle tube connector (2) is provided with a connecting needle hole (2-3) for connecting the needle tube (1). The top of the connecting needle hole (2-3) is connected to the inner hole (2-4) of the connector.

[0010] Furthermore, the needle body (3) is a reinforced column (3-1) in the shape of a regular hexagonal prism. The needle body (3) has a column connector hole (3-2) inside for connecting with the needle tube connector (2). The top of the reinforced column (3-1) has a column connector hole (3-4) for installing the connector (4). A column inner hole (3-3) is provided between the column connector hole (3-2) and the column connector hole (3-4).

[0011] Furthermore, a connector (4) is installed on the top of the needle body (3). The connector (4) mainly includes a connector thread (4-1), a connector limiting block (4-2), and a ball head (4-3). The connector limiting block (4-2) is located between the two. The connector thread (4-1) is provided inside the connector (4). The ball head (4-3) is spherical in shape to facilitate connection with the grouting pipe.

[0012] Furthermore, the inner diameters of the needle (1-5), the connecting needle hole (2-3), the inner diameter of the column (3-3), and the inner diameter of the connector (4-4) are the same, which facilitates the smooth flow of slurry inside.

[0013] Furthermore, the limiting head (2-1) and the connecting head limiting block (4-2) are regular hexagonal shapes.

[0014] Furthermore, the needle body (3) is made of aluminum.

[0015] Furthermore, the needle connector (2) is made of copper, and the connector (4) is made of steel.

[0016] Furthermore, the outer diameter of the needle body (1-2) is 2-4 mm.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention can effectively solve the problems encountered in traditional grouting processes:

[0019] 1. The needle (1) can be easily and quickly disassembled and replaced without replacing the entire grouting device, saving costs;

[0020] 2. The outer diameter of the needle body (1-2) is 2-4mm, preferably 3mm. It can puncture the waterstop with minimal invasiveness. After being pulled out, the rubber elastic waterstop inside the tube can heal itself.

[0021] 3. The needle body (3) adopts a hexagonal aluminum tube. The needle tube has the advantages of large outer diameter and high rigidity, and is not easy to bend when struck, resulting in very little wear.

[0022] 4. Fully leverage the advantages of aluminum tube's high rigidity and the small, replaceable needle for minimally invasive procedures, ensuring smooth, minimally invasive puncture of the waterstop while preventing bending during hammering and saving costs.

[0023] 5. No spring or ball bearing check devices are installed in the grouting channel of the entire device. This facilitates observation of the grouting process and ensures unobstructed flow of the pipeline, which is beneficial to the grouting effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a grouting device with replaceable needles;

[0025] Figure 2 yes Figure 1 Exploded view;

[0026] Figure 3 yes Figure 2 Component description diagram;

[0027] Figure 4 yes Figure 2 A sectional view along line A.

[0028] 1: Needle tube, 2: Needle tube connector, 3: Needle body, 4: Connector, 1-1: Needle tip, 1-2: Needle body, 1-3: Blocking ring, 1-4: Needle tip connecting thread, 1-5: Needle tip inner hole, 2-1: Limiting head, 2-2: Connecting thread, 2-3: Connecting needle hole, 2-4: Connecting inner hole, 3-1: Reinforcing column, 3-2: Column connecting hole, 3-3: Column inner hole, 3-4: Column connecting head hole, 4-1: Connector thread, 4-2: Connector limiting block, 4-3: Ball head, 4-4: Connector inner diameter. Detailed Implementation

[0029] like Figure 1-4 As shown, a grouting device with a replaceable needle mainly includes a needle tube (1), a needle tube connector (2), a needle body (3), and a connector (4), wherein the needle tube (1) is connected to the needle body (3) through the needle tube connector (2). The connector (4) is located at the top of the needle body (3).

[0030] The needle tube (1) has a needle inner hole (1-5) inside. From bottom to top, the needle tube (1) consists of a needle (1-1), a needle body (1-2), a retaining ring (1-3), and a needle connecting thread (1-4). The retaining ring (1-3) is used to prevent the needle tube (1) from being over-screwed and stripped when it is installed on the needle tube connector (2).

[0031] The needle tube connector (2) mainly includes a limiting head (2-1) and a connector thread (2-2). Inside it is a connecting needle hole (2-3) for connecting the needle tube (1). The top of the connecting needle hole (2-3) is connected to the inner hole (2-4) of the connector.

[0032] The needle body (3) has a hexagonal prism-shaped reinforced column (3-1) inside, with a column connector hole (3-2) for connecting with the needle tube connector (2) inside. The top of the reinforced column (3-1) has a column connector hole (3-4) for installing the connector (4), and a column inner hole (3-3) connecting the column connector hole (3-2) and the column connector hole (3-4).

[0033] A connector (4) is installed at the top of the needle body (3), such as Figure 3 As shown, the connector (4) mainly includes a connector thread (4-1), a connector limiting block (4-2), and a ball head (4-3). The connector limiting block (4-2) is located between the two. The connector thread (4-1) is provided inside the connector (4). The ball head (4-3) is spherical in shape, which can be easily connected to the grouting pipe.

[0034] The inner diameters of the needle (1-5), the connecting needle (2-3), the inner diameter of the column (3-3), and the inner diameter of the connector (4-4) are the same, which facilitates the smooth flow of slurry inside.

[0035] When in use, the needle tube (1) is inserted into the hole inside the pre-drilled gap of the pipe segment, and then a flat hammer is used to hammer the top of the connector (4). The needle (1-1) is fully inserted into the gap of the pipe segment. Since the needle body (3) occupies most of the length of the grouting device, the needle tube (1) is not easily bent and deformed due to the needle body being too long. At the same time, the diameters of the needle inner hole (1-5), the connecting needle hole (2-3), the column inner hole (3-3), and the connector inner diameter (4-4) are the same, so the grout will not be blocked inside the grouting device, and the grouting is very smooth. On the other hand, since the outer diameter of the needle body (1-2) of the grouting device is 3mm, and since the grouting liquid used is relatively thick, when the grouting work is stopped, the grouting liquid will only have a short backflow in the grouting device and will not backflow again. This avoids the need to install spring beads or other check devices inside the grouting device, which can facilitate the observation of the grouting situation and ensure that the pipeline is unobstructed, which is beneficial to the grouting effect.

[0036] 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 grouting device with replaceable needle tip, mainly comprising a needle tube (1), a needle tube connector (2), a needle body (3), and a connector (4), wherein the needle tube (1) is connected to the needle body (3) through the needle tube connector (2) and is located at the lowest end of the grouting device, and the connector (4) is located at the top of the needle body (3), wherein the upper part of the connector (4) is provided with a ball head (4-3) for connecting to the grouting tube, characterized in that: The length of the needle tube (1) is no more than one-quarter of the total length of the grouting device, and the length of the needle body (3) is greater than three-quarters of the length of the grouting device. No check device is installed inside the grouting device.

2. The grouting device with replaceable needles according to claim 1, characterized in that: The needle tube (1) has a needle inner hole (1-5) inside. The needle tube (1) has the following components from bottom to top: needle (1-1), needle body (1-2), blocking ring (1-3) and needle connecting thread (1-4). The blocking ring (1-3) is used to prevent the needle tube (1) from being over-screwed and stripped when it is installed on the needle tube connector (2).

3. The grouting device with replaceable needles according to claim 2, characterized in that: The needle tube connector (2) mainly includes a limiting head (2-1) and a connector thread (2-2). The bottom of the needle tube connector (2) is provided with a connecting needle hole (2-3) for connecting the needle tube (1). The top of the connecting needle hole (2-3) is connected to the inner hole (2-4) of the connector.

4. The grouting device with replaceable needles according to claim 3, characterized in that: The needle body (3) is a reinforced column (3-1) in the shape of a regular hexagonal prism. The needle body (3) has a column connector hole (3-2) inside for connecting with the needle tube connector (2). The top of the reinforced column (3-1) has a column connector hole (3-4) for installing the connector (4). There is a column inner hole (3-3) between the column connector hole (3-2) and the column connector hole (3-4).

5. The grouting device with replaceable needles according to claim 4, characterized in that: The needle body (3) is equipped with a connector (4) at its top. The connector (4) mainly includes a connector thread (4-1), a connector limiting block (4-2), and a ball head (4-3). The connector limiting block (4-2) is located between the two. The connector thread (4-1) is provided inside the connector (4). The ball head (4-3) is spherical in shape to facilitate connection with the grouting pipe.

6. The grouting device with replaceable needles according to claim 5, characterized in that: The inner diameters of the needle (1-5), the connecting needle (2-3), the inner diameter of the column (3-3), and the inner diameter of the connector (4-4) are the same, which facilitates the smooth flow of slurry inside.

7. A grouting device with replaceable needles according to claim 3, characterized in that: The limiting head (2-1) and the connecting head limiting block (4-2) are regular hexagonal shapes.

8. The grouting device with replaceable needles according to claim 2, characterized in that: The needle body (3) is made of aluminum.

9. A grouting device with replaceable needles according to claim 2, characterized in that: The needle connector (2) is made of copper, and the connector (4) is made of steel.

10. A grouting device with a replaceable needle according to any one of claims 2-9, characterized in that: The outer diameter of the needle body (1-2) is 2-4 mm.

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