Water stopping backflow assembly for concrete grouting

Abstract

The utility model discloses a water-stopping backflow assembly for concrete grouting, which belongs to the technical field of building leaking stoppage tools and comprises a water-stopping screw and a water-stopping needle head in threaded connection with the water-stopping screw, a first injection pipe cavity is formed in the water-stopping needle head, a second injection pipe cavity is formed in the water-stopping screw, and the first injection pipe cavity is communicated with the second injection pipe cavity. The second injection tube cavity is divided into an upper tube cavity and a lower tube cavity; according to the utility model, the check valve structure for the water-stop needle head, which comprises the ball valve, the spring and other components, is arranged in the inner cavity of the water-stop screw, so that after grouting is finished, the water-stop needle head can be directly broken off and detached without waiting for slurry to dry and solidify, and the plugging slurry can dry and solidify in a gap automatically; the traditional time for waiting for dry and hard disassembly of the water stop needle head is saved, so that the construction efficiency of the concrete gap repairing process is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to building leaking stoppage tool technical field, especially a kind of water stop backflow assembly for concrete grouting. BACKGROUND

[0002] Water stop needle, also known as grouting nozzle, is widely used in waterproof engineering in home decoration industry, especially in the occasion of grouting polyurethane and epoxy resin and other chemical slurry, high-pressure chemical grouting technology is applied, and professional components for high-pressure chemical grouting construction are used. Its principle is to use the continuous high pressure generated by the grouting machine to inject chemical liquid into the gap inside the concrete, and completely squeeze out the water in the gap, completely fill the gap, and achieve the purpose of water stop.

[0003] In a water stop needle with the document number CN219471644U, the grouting pipe, the connecting piece and the sleeve are included. The grouting pipe and the connecting piece are both hollow structures. The connecting piece is inserted into the grouting pipe at one end. The sleeve is sleeved outside the connecting piece. The expanding piece is sleeved outside the connecting piece. The grouting pipe can push the expanding piece to expand outward. The utility model forms an expanding structure by setting the expanding piece, so as to block the water stop needle and the hole wall, improve the fixing effect with the hole, prevent high-pressure slipping phenomenon, and reduce safety hazards.

[0004] The above-mentioned common water stop needle is used. After injecting the sealing slurry, the anti-backflow assembly is generally arranged at the external top end of the plug. This design needs the slurry to be completely solidified before the structure exposed outside the plug is removed, thereby increasing the process window period and being not conducive to the efficient implementation of the sealing operation.

[0005] To solve the above problems, a water stop backflow assembly for concrete grouting is provided. UTILITY MODEL CONTENTS

[0006] The main purpose of the utility model is to provide a water stop backflow assembly for concrete grouting, which solves the problems mentioned in the above background technology.

[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0008] A water stop backflow assembly for concrete grouting includes a water stop screw and a water stop needle connected with the water stop screw by threads. The water stop needle is internally formed with a first injection pipe cavity. The water stop screw is internally formed with a second injection pipe cavity. The second injection pipe cavity is divided into an upper pipe cavity and a lower pipe cavity.

[0009] A valve ball is clamped at the connection between the upper pipe cavity and the lower pipe cavity. A spring is clamped and fixed at the top of the valve ball.

[0010] Further, the diameter of the lower tube cavity is smaller than the diameter of the upper tube cavity, and the top of the spring is tightly fixed to the inner wall of the top of the upper tube cavity.

[0011] Further, the outer sleeve of the water stop screw is provided with two groups of anti-skid rubber sleeves and two groups of gaskets, one group of the gaskets is located between the two groups of anti-skid rubber sleeves, and the other group of the gaskets is located between the bottom anti-skid rubber sleeve and the water stop needle.

[0012] Further, the inner wall of the top of the first injection tube cavity is formed with female threads with a height of 2-3 cm, and the female threads are connected with the male threads on the outer wall of the water stop screw.

[0013] Further, the bottom of the water stop screw is further formed with a guide head, and the guide head is limited to slide in the first injection tube cavity.

[0014] Further, the top opening of the upper tube cavity is formed with a cross groove.

[0015] The beneficial technical effects of the utility model are as follows:

[0016] The utility model discloses a check valve structure for water stop needle, including ball valve and spring and other components, which is postposed in the inner cavity of water stop screw, after the grouting is finished, the water stop needle can be directly broken and disassembled without waiting for the dry solidification of slurry, so that the slurry is dried and solidified in the gap, the time of traditional dry solidification and disassembly of water stop needle is saved, and the construction efficiency of concrete gap repair process is improved. DRAWINGS

[0017] Fig. 1 It is a front view structural schematic diagram of a preferred embodiment of a water stop backflow assembly for concrete grouting according to the utility model.

[0018] Fig. 2 It is a parts explosion drawing of a preferred embodiment of a water stop backflow assembly for concrete grouting according to the utility model.

[0019] Fig. 3 It is a sectional structure schematic diagram of a water stop screw in a preferred embodiment of a water stop backflow assembly for concrete grouting according to the utility model.

[0020] The following is the explanation of the reference signs:

[0021] 1, water stop screw;2, anti-skid rubber sleeve;3, gasket;4, water stop needle;5, cross groove;6, spring;7, valve ball;8, first injection tube cavity;9, second injection tube cavity;10, guide head. DETAILED DESCRIPTION

[0022] In order to make the technical scheme of the utility model more clear and explicit to those skilled in the art, the utility model will be further described in detail below in combination with embodiments and drawings, but the implementation mode of the utility model is not limited to this.

[0023] As Figs. 1-3 Indicated, the utility model provides a kind of water stop backflow assembly for concrete grouting, including water stop screw 1, and with the water stop needle head 4 of water stop screw 1 screw connection, first injection lumen 8 is shaped in water stop needle head 4 inside, second injection lumen 9 is shaped in water stop screw 1 inside, and second injection lumen 9 is divided into upper lumen and lower lumen;Upper lumen is clamped with valve ball 7 at lower lumen connecting place, and spring 6 is clamped and fixed at the top of valve ball 7.

[0024] In the above structure, water stop needle head 4 is integrally cast into shape.

[0025] The diameter of lower lumen is less than the diameter of upper lumen, and the top of spring 6 is tightly fixed on the inner circumferential wall of the top of upper lumen, and valve ball 7 plays the role of one-way valve under the extrusion of spring 6, and external high-pressure slurry pushes away valve ball 7 to open grouting, and after stopping grouting, valve ball 7 falls back to block second injection lumen 9.

[0026] Two groups of anti-skid rubber sleeves 2 and two groups of washers 3 are movably sleeved on the outside of water stop screw 1, one group of washers 3 is located between the two groups of anti-skid rubber sleeves 2, and the other group of washers 3 is located between the bottom anti-skid rubber sleeve 2 and water stop needle head 4, the anti-skid rubber sleeve 2 plays the role of locking water stop screw 1 in the concrete preset hole, to prevent withdrawal.

[0027] The inner wall of the top of first injection lumen 8 is shaped into female thread with a height of 2-3cm, and the female thread is connected with the male thread on the outer wall of water stop screw 1, the structure of female thread and male thread connection is broken after grouting operation, to keep the end of water stop needle head 4 flush with the concrete repair surface.

[0028] The bottom of water stop screw 1 is also shaped into guide head 10, and the guide head 10 is limitingly slid with first injection lumen 8, and the guide head 10 plays the role of guide when water stop screw 1 enters water stop needle head 4, to facilitate assembly and assembly during processing.

[0029] The top opening of upper lumen is shaped into cross slot 5, and the design of cross slot 5 facilitates the use of uniform knob mechanism to screw a large number of water stop screws 1 into water stop needle head 4, to improve production efficiency.

[0030] The working principle of the device: the device is used in cooperation with high-pressure grouting machine.

[0031] The grouting machine sends the grout for repairing the gap from the first injection lumen 8 of the water stop needle 4 into the water stop screw 1, the high-pressure grout pushes away the ball valve compression spring 6, the grout enters the gap along the spring 6 and the second injection lumen 9 into the gap, the repairing is completed, after stopping grouting, the ball valve rebounds to block the second injection lumen 9, the water stop needle 4 is broken by hard force, the end part of the water stop screw 1 is kept flush with the outer wall of the concrete structure, and the grout is naturally dried and fixed, and the water leakage repairing work is completed.

[0032] By adopting the above structure, the problem that the check valve assembly of the traditional water stop needle 4 is arranged at the external end, and the water stop needle 4 cannot be broken until the repairing agent is dried for a long time is solved, and the work efficiency of the concrete water leakage repairing is greatly improved.

[0033] The above is only a further embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and concept of the present application within the scope disclosed by the present application, and all of them belong to the protection scope of the present application.

[0034] The standard parts used in the present application can be purchased from the market, and can be ordered according to the description and drawings, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the mechanical parts and equipment adopt the conventional type in the prior art, the control mode is automatically controlled through the controller, the control circuit of the controller can be realized by simple programming of the person skilled in the art, which belongs to the common knowledge in the art, and the present application is mainly used to protect the mechanical device, so the control mode and circuit connection are not explained in detail.

Claims

1. A water-stopping backflow assembly for concrete injection, comprising a water-stopping screw (1) and a water-stopping needle (4) threadedly connected to the water-stopping screw (1), characterized in that: The water stop needle (4) is internally formed with a first injection lumen (8), the water stop screw (1) is internally formed with a second injection lumen (9), and the second injection lumen (9) is divided into an upper lumen and a lower lumen; A valve ball (7) is clamped at the connection between the upper lumen and the lower lumen, and a spring (6) is clamped and fixed at the top of the valve ball (7).

2. The water-stopping backflow assembly for concrete grouting according to claim 1, characterized in that: The diameter of the lower lumen is smaller than that of the upper lumen, and the top of the spring (6) is tightly fixed to the inner circumferential wall at the top of the upper lumen.

3. The water-stopping backflow assembly for concrete grouting according to claim 2, characterized in that: Two groups of anti-skid rubber sleeves (2) and two groups of gaskets (3) are movably sleeved outside the water stop screw (1), one group of the gaskets (3) is located between the two groups of anti-skid rubber sleeves (2), and the other group of the gaskets (3) is located between the bottom anti-skid rubber sleeve (2) and the water stop needle (4).

4. The water-stopping backflow assembly for concrete grouting according to claim 3, characterized in that: The inner wall at the top of the first injection lumen (8) is formed with female threads with a height of 2-3 cm, and the female threads are connected with male threads on the outer wall of the water stop screw (1).

5. The water-stopping backflow assembly for concrete grouting according to claim 4, characterized in that: The bottom of the water stop screw (1) is further formed with a guide head (10), and the guide head (10) is limitingly and slidably connected with the first injection lumen (8).

6. The water-stopping backflow assembly for concrete grouting according to claim 5, characterized in that: A cross groove (5) is formed at the top opening of the upper lumen.

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