High-pressure grouting needle head

Abstract

The utility model discloses a high-pressure grouting needle, which relates to the technical field of constructional engineering and comprises a one-way valve, the surface of the one-way valve is sleeved with a fixing mechanism, the surface of the lower end of the one-way valve is in threaded connection with a grouting mechanism, the one-way valve comprises an integrated valve body, and a grout outlet is formed in the top of the integrated valve body. A mounting cavity is formed in the bottom of the inner cavity of the slurry outlet, and the diameter of the inner cavity of the mounting cavity is larger than that of the bottom of the inner cavity of the slurry outlet. In the machining process, the spring and the sealing ball are placed in the installation cavity in the integrated valve body, then a certain necking opening and a certain boss are formed on the top of the installation cavity in a stamping machining mode, the spring is blocked, the spring is prevented from falling off, and overall assembly of the high-pressure grouting needle head is facilitated; through the arrangement of the integrated valve body, the high pressure resistance of the grouting needle head is higher, grout is not prone to seeping out, and meanwhile through the machining mode of the integrated valve body, the machining procedure is simpler and more convenient, and the machining cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a high-pressure grouting needle. Background Art

[0002] High-pressure grouting machine is one of the commonly used equipment in the construction field. It has the function of fast and high-pressure grouting, but it needs various nozzles to adapt to it during use, so that it can be applied to various complex working environments, especially for deep holes or holes that need grouting. High-pressure grouting needles have appeared on the market. The needle is connected to the grouting machine. The needle can be clamped in the hole to be grouted through the expandable plastic / gel at the head, and then the grouting machine will grout inward.

[0003] For example, a Chinese patent with publication number CN205908039U discloses a one-piece steel grouting nail, comprising a one-piece hexagonal grouting nozzle and a high-strength hollow screw, wherein the bottom of the one-piece hexagonal grouting nozzle is connected to the high-strength hollow screw by a thread, a through hole is provided in the center of the high-strength hollow screw, the through hole is connected to the grouting hole cavity in the one-piece hexagonal grouting nozzle, a rubber ball valve is provided in the grouting hole cavity of the one-piece hexagonal grouting nozzle, a high-pressure spring is provided between the rubber ball valve and the high-strength hollow screw; a first expansion gasket and a second expansion gasket are sleeved on the high-strength hollow screw, an A gasket is provided between the first expansion gasket and the one-piece hexagonal grouting nozzle, and a B gasket is provided between the first expansion gasket and the second expansion gasket; the one-piece steel grouting nail is fixed in the grouting hole and sealed by the principle of ring pressure fastening, and the setting of the rubber ball valve effectively prevents the backwashing and backspraying of the slurry, which is worthy of vigorous promotion.

[0004] Although the above example can prevent the backflow of slurry by setting a rubber ball, the composition of the one-way valve body is composed of a high-strength hollow screw pushing a high-strength spring to make the rubber ball close the grouting hole cavity. When the grouting pressure is too large, the one-way valve body is composed of multiple parts, which can easily cause slurry leakage. At the same time, the processing method of the multi-part one-way valve leads to complicated processing procedures, higher processing costs, and certain inconveniences in use. Utility Model Content

[0005] The utility model provides a high-pressure grouting needle to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A high-pressure grouting needle comprises a one-way valve, a fixing mechanism is sleeved on the surface of the one-way valve, a grouting mechanism is threadedly connected to the surface of the lower end of the one-way valve, the one-way valve comprises an integral valve body, a slurry outlet is provided at the top of the integral valve body, an installation cavity is provided at the bottom of the inner cavity of the slurry outlet, and the diameter of the inner cavity of the installation cavity is larger than the diameter of the bottom of the inner cavity of the slurry outlet.

[0008] A further improvement of the technical solution of the utility model is that: a spring is overlapped on the top of the inner cavity of the installation cavity, and a sealing ball is overlapped on the end of the spring away from the top of the inner cavity of the installation cavity, the diameter of the sealing ball is larger than the diameter of the bottom of the inner cavity of the installation cavity, and a grouting groove is provided at the bottom of the inner cavity of the installation cavity, and a thread is provided on the surface of the one-piece valve body, and a shrinkage is formed by stamping to fix the spring and the sealing ball inside the installation cavity; a boss is formed on the outside of the slurry outlet by stamping to limit the fixing mechanism to the outside of the one-way valve.

[0009] A further improvement of the technical solution of the utility model is that: the fixing mechanism includes a rotating sleeve, the surface of the rotating sleeve is fixedly connected with anti-slip teeth, the inner wall of the rotating sleeve is sleeved with the surface of the thread, the bottom of the rotating sleeve is overlapped with a first gasket, and the inner wall of the first gasket is sleeved with the surface of the integrated valve body.

[0010] A further improvement of the technical solution of the utility model is that: a sealing rubber ring is overlapped at the bottom of the first gasket, the surface of the sealing rubber ring is sleeved with the surface of the integrated valve body, and a second gasket is overlapped at the bottom of the sealing rubber ring.

[0011] A further improvement of the technical solution of the utility model is that the inner wall of the second gasket is sleeved with the surface of the integrated valve body, the bottom of the second gasket overlaps with the top of the grouting mechanism, and an annular sealing portion is provided on the surface of the sealing rubber ring.

[0012] A further improvement of the technical solution of the utility model is that the grouting mechanism includes a connecting part, the top of the connecting part overlaps with the bottom of the second gasket, the inner wall of the connecting part is threadedly connected to the surface of the lower end of the integrated valve body, and the lower end of the connecting part is fixedly connected to the grouting part.

[0013] A further improvement of the technical solution of the utility model is that a grouting port is fixedly connected to the bottom of the grouting part, a grouting hole is opened inside the grouting port, and the inner cavity of the grouting hole is connected with the inner cavity of the grouting groove.

[0014] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0015] The utility model provides a high-pressure grouting needle. During the processing, a spring and a sealing ball are placed in an installation cavity in an integrated valve body. Subsequently, a stamping process is used to form a constriction and a boss on the top of the installation cavity to block the spring and a fixing mechanism, thereby preventing the spring and the fixing mechanism from falling off and facilitating the overall assembly of the high-pressure grouting needle. Through the provision of the integrated valve body, the high-pressure resistance of the grouting needle is enhanced, and the slurry is not easy to seep out. At the same time, the processing method of the integrated valve body makes the processing procedure simpler and the processing cost lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3 It is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the top structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the bottom structure of the utility model.

[0021] Figure 6 For the utility model Figure 2 Schematic diagram of Part A.

[0022] In the figure: 1. one-way valve; 11. integrated valve body; 12. slurry outlet; 121. constriction; 122. boss; 13. mounting cavity; 14. spring; 15. sealing ball; 16. grouting groove; 17. thread; 2. fixing mechanism; 21. rotating sleeve; 22. anti-slip teeth; 23. first gasket; 24. sealing rubber ring; 25. annular sealing part; 26. second gasket; 3. grouting mechanism; 31. connecting part; 32. grouting part; 33. grouting port; 34. grouting hole. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the embodiments:

[0024] Example 1

[0025] like Figure 1-6 As shown, the utility model provides a high-pressure grouting needle, including a one-way valve 1, a fixing mechanism 2 is sleeved on the surface of the one-way valve 1, a grouting mechanism 3 is threadedly connected to the surface of the lower end of the one-way valve 1, the one-way valve 1 includes an integrated valve body 11, a slurry outlet 12 is provided at the top of the integrated valve body 11, a mounting cavity 13 is provided at the bottom of the inner cavity of the slurry outlet 12, the diameter of the inner cavity of the mounting cavity 13 is larger than the diameter of the bottom of the inner cavity of the slurry outlet 12, a spring 14 is overlapped at the top of the inner cavity of the mounting cavity 13, a sealing ball 15 is overlapped at one end of the spring 14 away from the top of the inner cavity of the mounting cavity 13, the diameter of the sealing ball 15 is larger than the diameter of the bottom of the inner cavity of the mounting cavity 13, a grouting groove 16 is provided at the bottom of the inner cavity of the mounting cavity 13, a thread 17 is provided on the surface of the integrated valve body 11, and the slurry outlet 12 is fixed to the spring 14 and the sealing ball 15 inside the mounting cavity by a shrinkage 121 formed by stamping.

[0026] In this embodiment, the slurry is poured into the high-pressure grouting needle from the grouting hole 34 by a grouting machine. Under the action of the slurry pushing the sealing ball 15, the spring 14 is deformed, and the slurry can be smoothly ejected from the slurry outlet 12 for grouting. The spring 14 pushes the sealing ball 15 to close the grouting groove 16 to avoid slurry backflow. The outside of the slurry outlet 12 is formed by stamping to form a boss 122 that limits the fixing mechanism 2 to the outside of the one-way valve 1.

[0027] Example 2

[0028] like Figure 1-6 As shown, on the basis of embodiment 1, the utility model provides a technical solution: preferably, the fixing mechanism 2 includes a rotating sleeve 21, the surface of the rotating sleeve 21 is fixedly connected with an anti-slip tooth 22, the inner wall of the rotating sleeve 21 is sleeved with the surface of the thread 17, the bottom of the rotating sleeve 21 is overlapped with a first gasket 23, the inner wall of the first gasket 23 is sleeved with the surface of the integrated valve body 11, the bottom of the first gasket 23 is overlapped with a sealing rubber ring 24, the surface of the sealing rubber ring 24 is sleeved with the surface of the integrated valve body 11, and the bottom of the sealing rubber ring 24 is overlapped with a second gasket 2 6. The inner wall of the second gasket 26 is sleeved with the surface of the integrated valve body 11. The first gasket 23 and the second gasket 26 facilitate the rotation of the rotating sleeve 21 and the sealing rubber ring 24. The rotating sleeve 21 abuts against the outer surface of the boss 122. The boss 122 is an inverted frustum structure, and the rotating sleeve 21 will be stretched outward after abutting against the boss 122, so that the connection between the anti-slip teeth 22 and the outside world is more secure. The bottom of the second gasket 26 overlaps with the top of the grouting mechanism 3. The surface of the sealing rubber ring 24 is provided with an annular sealing portion 25, which is used to fit tightly with the fixing hole on the ground for sealing.

[0029] In this embodiment, the sealing rubber ring 24 is squeezed along the annular sealing portion 25 and deformed under the thrust of the second gasket 26, thereby fixing the high-pressure grouting needle in the preset hole. At the same time, the provision of the anti-slip teeth 22 can prevent the high-pressure grouting needle from rotating as a whole during the rotation process, making it easier to use.

[0030] Example 3

[0031] like Figure 1-6 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the grouting mechanism 3 includes a connecting portion 31, the top of the connecting portion 31 overlaps the bottom of the second gasket 26, the inner wall of the connecting portion 31 is threadedly connected to the surface of the lower end of the integrated valve body 11, the lower end of the connecting portion 31 is fixedly connected with a grouting portion 32, the bottom of the grouting portion 32 is fixedly connected with a grouting port 33, a grouting hole 34 is opened inside the grouting port 33, and the inner cavity of the grouting hole 34 is connected with the inner cavity of the grouting groove 16.

[0032] In this embodiment, the high-pressure grouting needle is inserted into the preset hole and then the grouting part 32 is rotated. Under the action of the grouting part 32, the connecting part 31 is moved upward, and the integrated valve body 11 is gradually inserted into the connecting part. At the same time, the second gasket 26 is pushed upward to fix the high-pressure grouting needle.

[0033] The following is a detailed description of the working principle of the high-pressure grouting needle.

[0034] like Figure 1-6 As shown, during the grouting process, the high-pressure grouting needle is first inserted into the preset hole, and then the grouting part 32 is rotated. Under the action of the grouting part 32, the connecting part 31 is moved upward, and the integrated valve body 11 is gradually put into the connecting part. At the same time, the second gasket 26 is pushed upward. Under the thrust of the second gasket 26, the sealing rubber ring 24 is squeezed along the annular sealing part 25 and deformed, thereby fixing the high-pressure grouting needle in the preset hole. At the same time, the provision of the anti-slip teeth 22 can prevent the high-pressure grouting needle from rotating as a whole during the rotation process, making it easier to use. Subsequently, the slurry is poured into the high-pressure grouting needle from the grouting hole 34 through the grouting machine. Under the action of the slurry pushing the sealing ball 15, the spring 14 is deformed, and the slurry can be smoothly sprayed out from the slurry outlet 12 for grouting.

[0035] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A high pressure grouting needle, comprising a one-way valve (1), characterized in that: The surface of the one-way valve (1) is sleeved with a fixing mechanism (2), and the surface of the lower end of the one-way valve (1) is threadedly connected with a grouting mechanism (3). The one-way valve (1) comprises an integrated valve body (11), a slurry outlet (12) is provided at the top of the integrated valve body (11), and an installation cavity (13) is provided at the bottom of the inner cavity of the slurry outlet (12), and the diameter of the inner cavity of the installation cavity (13) is greater than the diameter of the inner cavity bottom of the slurry outlet (12).

2. The high pressure grouting needle according to claim 1, characterized in that: A spring (14) is overlapped at the top of the inner cavity of the installation cavity (13); a sealing ball (15) is overlapped at one end of the spring (14) away from the top of the inner cavity of the installation cavity (13); the diameter of the sealing ball (15) is larger than the diameter of the bottom of the inner cavity of the installation cavity (13); a grouting groove (16) is provided at the bottom of the inner cavity of the installation cavity (13); a thread (17) is provided on the surface of the integrated valve body (11); a constriction (121) is formed by stamping at the slurry outlet (12) to fix the spring (14) and the sealing ball (15) inside the installation cavity (13); and a boss (122) is formed by stamping on the outside of the slurry outlet (12) to limit the fixing mechanism (2) outside the one-way valve (1).

3. The high pressure grouting needle according to claim 1, characterized in that: The fixing mechanism (2) comprises a rotating sleeve (21), the surface of the rotating sleeve (21) is fixedly connected with anti-slip teeth (22), the inner wall of the rotating sleeve (21) is sleeved with the surface of the thread (17), the bottom of the rotating sleeve (21) is overlapped with a first gasket (23), and the inner wall of the first gasket (23) is sleeved with the surface of the integrated valve body (11).

4. The high pressure grouting needle according to claim 3, characterized in that: A sealing rubber ring (24) is overlapped at the bottom of the first gasket (23), a surface of the sealing rubber ring (24) is sleeved with a surface of the integrated valve body (11), and a second gasket (26) is overlapped at the bottom of the sealing rubber ring (24).

5. The high pressure grouting needle according to claim 4, characterized in that: The inner wall of the second gasket (26) is sleeved with the surface of the integrated valve body (11), the bottom of the second gasket (26) is overlapped with the top of the grouting mechanism (3), and the surface of the sealing rubber ring (24) is provided with an annular sealing portion (25).

6. The high pressure grouting needle according to claim 2, characterized in that: The grouting mechanism (3) comprises a connecting portion (31), the top of the connecting portion (31) overlaps the bottom of the second gasket (26), the inner wall of the connecting portion (31) is threadedly connected to the surface of the lower end of the integrated valve body (11), and the lower end of the connecting portion (31) is fixedly connected to a grouting portion (32).

7. The high pressure grouting needle according to claim 6, characterized in that: The bottom of the grouting portion (32) is fixedly connected with a grouting port (33), a grouting hole (34) is provided inside the grouting port (33), and the inner cavity of the grouting hole (34) is connected with the inner cavity of the grouting groove (16).

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