Quick connecting device for advanced small guide pipe and grouting pipe

Abstract

The utility model discloses a quick connecting device for an advanced small guide pipe and a grouting pipe, which is used for connecting the advanced small guide pipe and the grouting pipe and comprises a first connecting end, a connecting pipe, a second connecting end and a valve, the valve is arranged on the connecting pipe, and the first connecting end and the second connecting end are respectively arranged at the front end and the rear end of the connecting pipe. The first connecting end is connected with an advanced small guide pipe, and the second connecting end is connected with a grouting pipe. The first connecting end and the second connecting end each comprise a locking device and a sealing sleeve, the locking devices are arranged at the ends of the connecting pipe, and the sealing sleeves are arranged in the locking devices. Rapid connection of the advanced small guide pipe and the grouting pipe is achieved in an inserted connection and threaded connection mode, the connection position is effectively sealed, stability and effectiveness of pipeline connection are guaranteed, the pipeline butt joint efficiency is guaranteed, the sealing performance of the connection position is improved, and then the grouting pressure and the grouting effect are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of small-duct grouting, in particular to a quick connection device for an advanced small-duct and a grouting pipe. Background Art

[0002] In the existing tunnel initial support advance small conduit grouting construction, the grouting pipe and the small conduit are mostly connected by welding or flange connection. The above connection method has the defect of poor sealing at the connection, resulting in substandard grouting pressure and poor grouting effect. Especially for the surrounding rock crushing section, it cannot meet the technical requirements for improving the surrounding rock conditions. In addition, welding or flange connection requires a large operating space, and there are also defects such as difficult operation and long operation time. At the same time, it is easy to have the situation of welding not being in place, which further leads to poor sealing effect. CN114151109A discloses a joint for connecting the advance small conduit and the grouting pipe, but both ends are connected by threaded connection, which is inconvenient to connect and has a relatively complex structure. In addition, the threaded connection has the defects of poor sealing and the inconvenient operation of the valve position after installation. The utility model provides a quick connection device for the advance small conduit and the grouting pipe to solve the above problems. Utility Model Content

[0003] The utility model provides a quick connection device for an advance small catheter and a grouting pipe, which has convenient connection operation and good sealing after connection, effectively improves the connection effect between the grouting pipe and the advance small catheter, and ensures the grouting effect.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] A quick connection device for an advance small conduit and a grouting pipe, used for connecting the advance small conduit and the grouting pipe, comprising a first connection end, a connecting pipe, a second connection end and a valve, wherein the valve is arranged on the connecting pipe, the first connection end and the second connection end are arranged on the front end and the rear end of the connecting pipe respectively, the first connection end is connected to the advance small conduit, and the second connection end is connected to the grouting pipe;

[0006] The first connecting end and the second connecting end both include a locker and a sealing sleeve. The locker is arranged at the end of the connecting pipe, and the sealing sleeve is arranged in the locker.

[0007] Furthermore, the front end of the connecting pipe is provided with a bayonet, and is connected to the advance small guide tube through the bayonet. The rear end of the connecting pipe is provided with a thread, and is connected to the grouting pipe through the thread.

[0008] Furthermore, the locking device is provided with a ring plate, the ring plate is arranged at the outer end of the locking device, and the inner cavity of the ring plate is trumpet-shaped.

[0009] Furthermore, the end of the connecting pipe is located between the first connecting end and the second connecting end.

[0010] Furthermore, the inner diameter of the sealing sleeve is the same as the outer diameter of the connecting pipe.

[0011] Preferably, the locking device is a pipe connector with a wall thickness of 5 cm, and the sealing sleeve is a plastic ring with a wall thickness of 1 cm.

[0012] The beneficial effects of the utility model are as follows:

[0013] The connecting device realizes the quick connection of the advance small catheter and the grouting pipe by means of plug-in and threaded connection, and effectively seals the connection position to ensure the stability and effectiveness of the pipeline connection, which not only ensures the efficiency of pipeline docking, but also improves the sealing of the connection, thereby ensuring the grouting pressure and grouting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection state between the second connection end and the connection pipe of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the first connecting end of the utility model.

[0017] Figure numerals: 1 - first connection end, 11 - locker, 12 - sealing sleeve, 13 - ring plate, 2 - connecting pipe, 3 - second connection end, 4 - valve. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings of the specification to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0020] like Figure 1 ,2 As shown, a quick connection device for an advance small catheter and a grouting pipe is used to connect the advance small catheter and the grouting pipe, including a first connecting end 1, a connecting pipe 2, a second connecting end 3 and a valve 4, wherein the valve 4 is arranged on the connecting pipe 2, the first connecting end 1 and the second connecting end 3 are respectively arranged on the front end and the rear end of the connecting pipe 2, the first connecting end 1 is connected to the advance small catheter, and the second connecting end 3 is connected to the grouting pipe.

[0021] The commonly used advanced small conduit and grouting pipe are connected by thread connection. When in use, they can be completely connected by aligning and tightening the threads. It has the advantage of convenient operation, but there are many problems in actual use. For example, after the threads are tightened, the valve will face inward, and the operator's operation of the valve switch is cumbersome. Secondly, after the grouting pipe is used many times, the slurry solidifies at the pipe mouth, which makes it impossible to tighten it when it is used again. In addition, there are problems of insufficient pressure and leakage after multiple uses. The specific embodiment of the utility model is connected to the advanced small conduit and the grouting pipe by clamping and threaded connection respectively. Under the premise of ensuring the convenience of connection, the connection position is effectively sealed to ensure the stability and sealing of the pipeline connection. The connection pipe 2 and the advanced small conduit are connected by a bayonet connection to ensure the convenience of connection, avoiding the defect that the valve may face inward when the threaded connection is used; since the grouting pipe does not have the problem of pipeline orientation, the connection pipe 2 and the grouting pipe are connected by threads, which not only ensures the quickness of the connection operation, but also has better connection stability due to the threaded connection, can bear stronger grouting pressure, and can directly use the standard grouting pipe to reduce costs.

[0022] like Figure 3 As shown, the first connection end 1 and the second connection end 3 both include a locker 11 and a sealing sleeve 12, wherein the locker 11 is disposed at the end of the connection pipe 2, and the sealing sleeve 12 is disposed in the locker 11. The first connection end 1 and the second connection end 3 are used to improve the connection strength and sealing performance when the connection pipe 2 is connected to the advance small guide tube and the grouting pipe, so as to ensure the stability of the grouting process under a relatively large grouting pressure.

[0023] like Figure 2 As shown, further, the front end of the connecting pipe 2 is provided with a bayonet, and is connected to the advance small catheter through the bayonet, which is not only convenient for connection but also convenient for the operator to control the direction of the pipeline. The rear end of the connecting pipe 2 is provided with a thread and is connected to the grouting pipe through a thread.

[0024] like Figure 3As shown, further, the locking device 11 is provided with a ring plate 13, the ring plate 13 is provided at the outer end of the locking device 11, and the inner cavity of the ring plate 13 is a trumpet-shaped with a large outer portion and a small inner portion. The ring plate 13 is provided and the inner cavity of the ring plate 13 is set to a trumpet-shaped shape, the outer diameter is relatively large, so that the pipeline is easier to dock, and the inner diameter is relatively small, and matches the outer diameter of the advance small catheter or the grouting pipe, so that foreign matter such as slag and gravel on the outer wall of the advance small catheter or the grouting pipe can be removed, and foreign matter is prevented from entering the first connecting end 1 and the second connecting end 3, and then the foreign matter pierces the sealing sleeve 12 when locking, resulting in reduced sealing effect.

[0025] Preferably, the ring plate 13 is a stainless steel ring plate.

[0026] Furthermore, the end of the connecting pipe 2 is located between the first connecting end 1 and the second connecting end 3 .

[0027] Furthermore, the inner diameter of the sealing sleeve 12 is the same as the outer diameter of the connecting pipe 2 .

[0028] Preferably, the locker 11 is a stainless steel pipe connector with an inner diameter of 46 mm and a wall thickness of 5 cm. The sealing sleeve 12 is an elastic plastic ring with a wall thickness of 1 cm, which is used in conjunction with an advance small catheter with an outer diameter of 42 mm. After the advance small catheter or the grouting pipe is connected, the inner diameter of the pipe connector is reduced by locking it, and then the sealing sleeve 12 is squeezed to wrap it around the advance small catheter or the grouting pipe, and the seam is sealed to achieve plugging.

[0029] Preferably, the valve is a manual valve.

[0030] When the utility model is used, the first connection end 1 of the connecting device is aligned with the advance small catheter for connection. After the two are docked in place through the bayonet connection, the locker 11 is manually operated to lock and realize the locking and sealing of the advance small catheter and the connecting pipe 2, the valve 4 is closed, and then the grouting pipe is aligned with the second connection end 3 for connection, and the two are docked in place through the threaded connection, the locker 11 is operated to realize the locking and sealing of the grouting pipe and the connecting pipe 2. After the grouting pipe is connected, the valve 4 is opened to carry out the grouting operation.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A quick connection device for an advanced small conduit and a grouting pipe, used to connect an advanced small conduit and a grouting pipe, characterized in that: The invention comprises a first connecting end (1), a connecting pipe (2), a second connecting end (3) and a valve (4), wherein the valve (4) is arranged on the connecting pipe (2), the first connecting end (1) and the second connecting end (3) are arranged on the front end and the rear end of the connecting pipe (2), respectively, the first connecting end (1) is connected to the leading small conduit, and the second connecting end (3) is connected to the grouting pipe; The first connecting end (1) and the second connecting end (3) both comprise a locking device (11) and a sealing sleeve (12); the locking device (11) is arranged at the end of the connecting pipe (2), and the sealing sleeve (12) is arranged in the locking device (11).

2. The quick connection device for the advanced small conduit and the grouting pipe according to claim 1 is characterized in that: The front end of the connecting pipe (2) is provided with a bayonet, and is connected to the leading small conduit via the bayonet; the rear end of the connecting pipe (2) is provided with a thread, and is connected to the grouting pipe via the thread.

3. The quick connection device for the advanced small conduit and the grouting pipe according to claim 1 is characterized in that: The locking device (11) is provided with a ring plate (13), the ring plate (13) is arranged at the outer end of the locking device (11), and the inner cavity of the ring plate (13) is trumpet-shaped.

4. The quick connection device for the advanced small conduit and the grouting pipe according to claim 1 is characterized in that: The end of the connecting pipe (2) is located between the first connecting end (1) and the second connecting end (3).

5. The quick connection device for the advanced small conduit and the grouting pipe according to claim 1 is characterized in that: The inner diameter of the sealing sleeve (12) is the same as the outer diameter of the connecting pipe (2).

6. The quick connection device for the advanced small conduit and the grouting pipe according to claim 1 is characterized in that: The locking device (11) is a pipe connector with a wall thickness of 5 cm, and the sealing sleeve (12) is a plastic ring with a wall thickness of 1 cm.

Images