Vacuum preloading drainage device

Abstract

The utility model discloses a vacuum preloading drainage device, and relates to the technical field of vacuum preloading. The plastic drainage plate is pre-buried in the soft foundation, and the upper end of the plastic drainage plate extends out of the soft foundation; the drainage connecting pipeline is connected between two adjacent groups of plastic drainage plates and enables the plastic drainage plates to be communicated with the drainage connecting pipeline; the rotating cavity is of a cavity structure, and the rotating cavity is rotatably connected to the upper end of the drainage connecting pipeline and communicates with the drainage connecting pipeline; the rotary connecting structure is arranged between the rotary cavity and the drainage connecting pipeline, so that the rotary cavity and the drainage connecting pipeline are rotatably connected. The traditional direct connection of a vacuumizing drainage pipeline, a plastic drainage plate and a drainage connecting pipeline is improved into the connection of the vacuumizing drainage pipeline through the rotatable rotating cavity, and the vacuumizing drainage pipeline is wound on the rotating cavity by a certain distance through the rotation of the rotating cavity, so that the allowance when the vacuumizing drainage pipeline is stretched is reserved, the connection part is prevented from loosening and breaking, and the service life of the vacuumizing drainage pipeline is prolonged. And the stability of vacuum preloading drainage construction is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum preloading, in particular to a vacuum preloading drainage device. Background Art

[0002] Vacuum preloading is to lay a sand cushion layer on the surface of the soft soil foundation that needs to be reinforced, and then build a vertical drainage pipe (plastic drainage board), and then use an airtight sealing membrane to isolate it from the atmosphere. The end of the sealing membrane is buried and pressed, and a vacuum pump or other vacuum means is used to draw a vacuum through the drainage pipe buried in the sand cushion layer. A negative pressure (relative to atmospheric pressure) is formed under the membrane. The negative pressure is transmitted downward along the vertical drainage channel (plastic drainage board). The unequal pressure state between the soil and the vertical drainage channel causes the negative pressure to be transmitted to the soil. Under the action of negative pressure, the pore water gradually seeps into the vertical drainage channel to achieve the effect of soil drainage consolidation and strength increase, increase the effective stress of the foundation, consolidate the soil, reduce later settlement, and improve the bearing capacity of the foundation. In the drainage pipes of the vacuum preloading method, a shorter water pipe is generally connected between two adjacent groups of drainage pipes (plastic drainage boards), and pipes used for drainage and vacuuming are connected at both ends of the water pipe to realize subsequent vacuuming and drainage operations. Generally, the vacuumed pipes are connected to vacuum pumps, drainage pumps and other equipment to realize vacuuming and drainage operations.

[0003] Since vacuum preloading can easily cause ground subsidence, the corresponding drainage pipes will inevitably show a tendency to deform and stretch along the entire length. There is a greater risk of increased gaps at pipe joints or even disconnection, resulting in uneven vacuum distribution and even air leakage in the drainage pipes, leading to the failure of vacuum preloading drainage construction. In order to improve this problem, it is necessary to design a vacuum preloading drainage device. Utility Model Content

[0004] The utility model aims to solve the technical problems in the prior art and provides a vacuum pre-pressure drainage device.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0006] Vacuum preloading drainage device, comprising:

[0007] A plastic drainage board, which is pre-buried in the soft foundation and the upper end of which protrudes out of the soft foundation;

[0008] A drainage connection pipe, which is connected between two adjacent groups of the plastic drainage boards and enables the plastic drainage boards to communicate with the drainage connection pipe;

[0009] A rotating chamber, which is a hollow structure, the rotating chamber is rotatably connected to the upper end of the drainage connection pipe and communicates with the drainage connection pipe;

[0010] A rotating connection structure, which is arranged between the rotating chamber and the drainage connection pipe so that the rotating chamber and the drainage connection pipe can be rotatably connected;

[0011] Wherein, vacuum drainage pipes are symmetrically connected to both sides of the rotating chamber.

[0012] Furthermore, both ends of the drainage connection pipe are closed structures and the side surfaces of the drainage connection pipe are connected to the plastic drainage board.

[0013] Furthermore, the rotating connection structure includes a connecting vertical pipe, which is arranged at the upper end of the drainage connecting pipe and is connected to the drainage connecting pipe. An assembly hole for the connecting vertical pipe to be inserted is opened at the center position of the lower end of the rotating chamber, and a rotating sealing ring is arranged between the inner side of the assembly hole and the connecting vertical pipe.

[0014] Furthermore, elbow pipes communicating with the rotating chamber are arranged on both sides of the rotating chamber, and the opening directions of the two groups of elbow pipes on both sides of the rotating chamber extend toward the tangent direction of the rotating chamber in the same rotating direction;

[0015] The vacuum drainage pipeline is connected to the elbow pipe to communicate with the rotating chamber.

[0016] Furthermore, after the rotating chamber rotates 180°, the vacuum drainage pipeline is wound around the side surface of the upper half of the rotating chamber.

[0017] The utility model has the following beneficial effects:

[0018] The vacuum preloading drainage device of the utility model improves the direct connection between the traditional vacuum drainage pipe, the plastic drainage plate and the drainage connecting pipe, so that the vacuum drainage pipe is connected through a rotatable rotating chamber. The vacuum drainage pipe is wound around one end of the rotating chamber through the rotation of the rotating chamber to leave a margin when stretched, thereby avoiding loosening and disconnection of the connection part and ensuring the stability of the vacuum preloading drainage construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a structural schematic diagram of the vacuum preloading drainage device of the utility model;

[0021] Figure 2 It is a front view of the vacuum preloading drainage device of the utility model;

[0022] Figure 3 It is a schematic diagram of the winding of the vacuum drainage pipeline after the rotary chamber of the vacuum preloading drainage device of the utility model rotates;

[0023] Figure 4 It is a schematic diagram of the connection distribution between the vacuum drainage pipes of the vacuum preloading drainage device of the utility model.

[0024] The reference numerals in the figures indicate:

[0025] 1. Plastic drain board; 2. Drainage connecting pipe; 3. Rotating chamber; 4. Vacuum drainage pipe; 5. Connecting vertical pipe; 6. Assembly hole; 7. Rotating sealing ring; 8. Elbow pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model 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 in 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.

[0027] See also Figure 1-4 , vacuum preloading drainage device, comprising:

[0028] The plastic drain board 1 is pre-buried in the soft foundation and the upper end thereof extends out of the soft foundation, so that the negative pressure in the plastic drain board 1 can accelerate the extraction of water in the soft foundation, accelerate the drainage and consolidation of the soil, increase the strength, increase the effective stress of the foundation, consolidate the soil, reduce the later settlement, and improve the bearing capacity of the foundation;

[0029] A drainage connection pipe 2 is connected between two adjacent sets of plastic drainage boards 1 and connects the plastic drainage boards 1 with the drainage connection pipe 2, so that drainage at the plastic drainage boards 1 directly enters the drainage connection pipe 2;

[0030] The rotating chamber 3 is a hollow structure. The rotating chamber 3 is rotatably connected to the upper end of the drainage connection pipe 2 and communicates with the drainage connection pipe 2. The rotating chamber 3 is a transfer pipe;

[0031] A rotating connection structure is provided between the rotating chamber 3 and the drainage connection pipe 2 so that the rotating chamber 3 and the drainage connection pipe 2 can be rotatably connected, so that the rotating chamber 3 can be rotated and connected to the drainage connection pipe 2 without affecting the sealing;

[0032] Among them, the vacuum drainage pipes 4 are symmetrically connected on both sides of the rotating chamber 3, and then the vacuum drainage pipes 4 are connected with the drainage connecting pipe 2 under the transit connection of the rotating chamber 3, and then the external vacuum pump, drainage pump and other equipment can be connected through the vacuum drainage pipes 4 to realize vacuum and drainage operations.

[0033] Furthermore, both ends of the drainage connection pipe 2 are closed structures and the sides of the drainage connection pipe 2 are connected to the plastic drainage board 1, that is, the drainage connection pipe 2 is horizontally arranged so that the two sides are connected to the plastic drainage board 1.

[0034] Furthermore, the rotating connection structure includes a connecting vertical pipe 5, which is arranged at the upper end of the drainage connecting pipe 2 and is connected to the drainage connecting pipe 2. An assembly hole 6 for the connecting vertical pipe 5 to extend into is opened at the center position of the lower end of the rotating chamber 3, and a rotating sealing ring 7 is arranged between the inner side of the assembly hole 6 and the connecting vertical pipe 5.

[0035] Specifically, the vertical connection pipe 5 is inserted into the assembly hole 6 to be connected to the drainage connection pipe 2, and a position-limiting protrusion can be provided on the upper end of the vertical connection pipe 5 to limit the position inside the drainage connection pipe 2 to avoid separation from the drainage connection pipe 2. The use of the rotary seal ring 7 can seal the rotary chamber 3 and the vertical connection pipe 5 without affecting the relative rotation between the rotary chamber 3 and the vertical connection pipe 5.

[0036] Furthermore, elbow pipes 8 communicating with the rotating chamber 3 are arranged on both sides of the rotating chamber 3, and the opening directions of the two sets of elbow pipes 8 on both sides of the rotating chamber 3 extend in the tangent direction of the rotating chamber 3 in the same rotating direction;

[0037] The vacuum drainage pipe 4 is connected to the elbow pipe 8 to communicate with the rotating chamber 3 .

[0038] Specifically, the elbow pipe 8 can be easily connected to the vacuum drainage pipe 4, and the connection direction can prevent the vacuum drainage pipe 4 from being blocked due to bending when the vacuum drainage pipe 4 is wound on the rotating chamber 3.

[0039] Furthermore, after rotating 180°, the rotary chamber 3 allows the vacuum drainage pipe 4 to be wound on half of the side surface of the rotary chamber 3. At this time, it is equivalent to leaving a certain stretching margin for the vacuum drainage pipe 4. When it is pulled, the rotary chamber 3 rotates to release the wound vacuum drainage pipe 4 to cope with the stretching, thereby avoiding the vacuum drainage pipe 4 from being directly torn off from the rotary chamber 3, making the connection between the two more stable, and thus making the construction and use of the vacuum preloading drainage device more stable.

[0040] To sum up, the vacuum preloading drainage device of the utility model improves the traditional direct connection between the vacuum drainage pipe and the plastic drainage board and the drainage connecting pipe to enable the vacuum drainage pipe to be connected through a rotatable rotating chamber. The vacuum drainage pipe is wound around one end of the rotating chamber through the rotation of the rotating chamber to leave a margin when being stretched, thereby avoiding loosening and disconnection of the connection part and ensuring the stability of the vacuum preloading drainage construction.

[0041] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. Vacuum preloading drainage device, characterized in that: include: A plastic drainage board (1) is pre-buried in a soft foundation and has its upper end protruding from the soft foundation; A drainage connection pipe (2) connected between two adjacent groups of the plastic drainage boards (1) and connecting the plastic drainage boards (1) with the drainage connection pipe (2); A rotating chamber (3) having a hollow structure, wherein the rotating chamber (3) is rotatably connected to the upper end of the drainage connection pipe (2) and communicates with the drainage connection pipe (2); A rotating connection structure, which is arranged between the rotating chamber (3) and the drainage connection pipe (2) so that the rotating chamber (3) and the drainage connection pipe (2) are rotatably connected; Wherein, vacuum drainage pipes (4) are symmetrically connected to both sides of the rotating chamber (3).

2. The vacuum preloading drainage device according to claim 1, characterized in that: Both ends of the drainage connection pipe (2) are closed structures, and the side of the drainage connection pipe (2) is connected to the plastic drainage board (1).

3. The vacuum preloading drainage device according to claim 1, characterized in that: The rotary connection structure comprises a connecting vertical pipe (5), which is arranged at the upper end of the drainage connecting pipe (2) and communicates with the drainage connecting pipe (2); a mounting hole (6) for the connecting vertical pipe (5) to be inserted is provided at the center of the lower end of the rotary chamber (3); and a rotary sealing ring (7) is provided between the inner side of the mounting hole (6) and the connecting vertical pipe (5).

4. The vacuum preloading drainage device according to claim 1, characterized in that: Elbow pipes (8) communicating with the rotating chamber (3) are arranged on both sides of the rotating chamber (3); the opening directions of the two groups of elbow pipes (8) on both sides of the rotating chamber (3) extend in the tangential direction of the rotating chamber (3) in the same rotating direction; The vacuum drainage pipeline (4) is connected to the elbow pipe (8) to communicate with the rotating chamber (3).

5. The vacuum preloading drainage device according to claim 1, characterized in that: After the rotary chamber (3) is rotated 180°, the vacuum drainage pipe (4) is wound around the upper half of the side surface of the rotary chamber (3).

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