Pressurizing pipe

Abstract

Relates to a pressurizing pipe in the technical field of vacuum preloading soft foundation treatment, and comprises a ventilating hose, a main pipe, a reducing connecting pipe and an end socket, the reducing connecting pipe comprises a small-diameter section, a transition conical section and a large-diameter section which are connected in sequence, and a first inserting sleeve coaxially fixed with the corresponding end of the small-diameter section is arranged in the transition conical section; the inner diameter of the first inserting sleeve is larger than that of the small-diameter section to form an annular step face, a second inserting sleeve is coaxially fixed to the bottom in the end socket, the two ends of the main pipe are fixedly inserted into the first inserting sleeve and the second inserting sleeve in a sealed mode respectively, and the two ends of the ventilation hose are fixedly inserted into the pipe wall of the large-diameter section of the reducing connecting pipe and the straight wall of the end socket in a sealed mode respectively. A plurality of rows of circulation holes are formed in the pipe wall of the main pipe in the axial direction of the main pipe, the main pipe is sleeved with a spring ferrule in a clearance mode, and the inner wall of the ventilation hose is fixedly connected with the spring ferrule. The pressurizing pipe is used for inflating and pressurizing soil, and the service life and the effect of pressurizing drainage are improved through a reasonably-designed mounting and connecting structure.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum preloading soft foundation treatment, in particular to a pressure boosting pipe. Background Art

[0002] Vacuum preloading soft foundation treatment is a method of foundation treatment. This method is usually used in areas with loose soil or high moisture content. Through drainage and preloading, the density and bearing capacity of the soil are increased, thereby providing more stable support for infrastructure such as buildings, tunnels, and bridges. Traditionally, drainage boards are inserted into the soil for automatic water absorption and drainage. Drainage boards are generally made of harmonica-shaped strips made of polyethylene or polypropylene as core belts, and both sides are wrapped with non-woven geotextiles as filter layers to become plastic drainage belts (boards). The core belt plays a supporting role and discharges the water that seeps into the filter layer upward. Its advantages are low cost and the ability to automatically absorb water according to soil pressure and siphon force. The disadvantage is that the water absorption and drainage efficiency is low, and it is only suitable for times when the water content is high. Once the water content decreases and reaches a balanced state, relying solely on soil pressure is not enough to achieve continuous drainage effects.

[0003] A Chinese invention patent with announcement number CN109763479A discloses a pressurized vacuum flexible pipe well drainage system. The vacuum flexible pipe well used is composed of five parts: a pipe boot, a filtering flexible pipe, a sealing pipe, a vacuum drainage pipe and a connecting joint. A gas-liquid separation method is used to generate a high vacuum degree, which can quickly filter the pore water in the clay particles into the pipe well. However, since the pipeline is deeply inserted into the ground and vacuum extraction is required, the working environment is relatively harsh. If the overall structural design is unreasonable, the filtering flexible pipe will not achieve good support and filtering effects, and it will not only be easy to be damaged, but also affect the pressurization effect. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology and solve the existing technical problems, the utility model discloses a booster pipe for aerating and pressurizing soil and used in combination with a drainage board. The service life and effect of the booster drainage are improved through a reasonably designed installation and connection structure.

[0005] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0006] A booster pipe comprises a breathable hose, a main pipe, a reducing pipe and a sealing head, wherein the reducing pipe comprises a thin-diameter section, a transition cone section and a thick-diameter section which are connected in sequence, wherein a first plug sleeve is provided in the transition cone section and is coaxially fixed with the corresponding end of the thin-diameter section, wherein the inner diameter of the first plug sleeve is larger than the inner diameter of the thin-diameter section to form an annular step surface, wherein a second plug sleeve is coaxially fixed to the inner bottom of the sealing head, wherein the two ends of the main pipe are respectively plugged and sealed in the first plug sleeve and the second plug sleeve, wherein the two ends of the breathable hose are respectively plugged and sealed in the thick-diameter section wall of the reducing pipe and the straight wall of the sealing head; wherein the pipe wall of the main pipe is provided with a plurality of rows of flow holes which are all along the axial direction of the main pipe, a spring ferrule is provided in the outer gap of the main pipe, and the inner wall of the breathable hose is fixedly connected to the spring ferrule.

[0007] Furthermore, the air-permeable hose is made of non-woven fabric.

[0008] Furthermore, the spring ferrule is made of steel wire, the entire spiral wire surface of the spring ferrule is covered with a thermoplastic plastic sleeve, and the inner wall of the breathable hose is fixedly connected to the outer wall of the corresponding plastic sleeve by hot melting.

[0009] Furthermore, a first pressure ring and a second pressure ring are respectively sleeved on the corresponding tube body of the air-permeable hose near the reducing pipe and the end cap, and the tube body of the air-permeable hose near the first pressure ring and the second pressure ring are convex outward to form a corrugated ring convex portion, and the first pressure ring and the second pressure ring respectively crimp and fix the corresponding corrugated ring convex portion to the corresponding end faces of the reducing pipe and the end cap.

[0010] Furthermore, a filter disc is encapsulated on the annular step surface of the reducing pipe.

[0011] Furthermore, sealant is applied to the outer walls of both ends of the main pipe.

[0012] Furthermore, the flow holes are evenly arranged in four rows along the circumference of the main pipe, and the flow holes in two adjacent rows are staggered.

[0013] Furthermore, two ends of the spring collar are in corresponding conflict with the reducing pipe and the head respectively.

[0014] Furthermore, the outer bottom of the sealing head is a pointed head.

[0015] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0016] The booster pipe disclosed by the utility model is firstly different from the existing vacuum flexible pipe well vacuum water filtration and water absorption in the way of use. Instead, it uses the booster pipe to pump air into the soil to increase the pressure. Under the soil wrapping, the working condition of pumping air and increasing pressure is much better than the working condition of vacuum negative pressure. After the pressure in the soil is increased, it is used in combination with the traditional drain board to greatly improve the continuous drainage efficiency of the drain board. In addition, the booster pipe is respectively provided with a first socket and a second socket in the reducing pipe and the end cap, which can not only increase the structural strength of the reducing pipe and the end cap, but also facilitate the plug-in fixing and sealing of the main pipe, so that the entire basic support structure is more solid, so that it can adapt to the working conditions for a long time. While the connected breathable hose and the main pipe are separated by a distance for pumping air and increasing pressure, the breathable hose can also be firmly fixed by a spring ring to prevent it from moving and detaching, thereby achieving a better boosting effect and greatly reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the implementation structure of the utility model;

[0018] Figure 2 yes Figure 1 An enlarged schematic diagram of part A.

[0019] In the figure: 1, reducing pipe; 2, main pipe; 3, breathable hose; 301, corrugated ring convex part; 4, head; 5, second plug sleeve; 6, spring ring; 7, flow hole; 8, first plug sleeve; 9, filter plate; 10, first pressure ring; 11, second pressure ring. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" and the like indicating directions or positional relationships, they are only corresponding to the drawings of the present invention, for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction: Embodiment 1:

[0021] Combined with Figure 1The booster pipe comprises a breathable hose 3, a main pipe 2, a reducing pipe 1 and a sealing head 4. The breathable hose 3 is made of non-woven fabric to facilitate ventilation and ensure that mud and sand impurities cannot enter the pipe. In addition, the outer bottom of the sealing head 4 is a pointed tip to facilitate downward extension into the soil. The reducing pipe 1 comprises a thin-diameter section, a transition cone section and a thick-diameter section connected in sequence. The transition cone section is provided with a first socket 8 coaxially fixed to the corresponding end of the thin-diameter section. The first socket 8 is integrally connected to the reducing pipe 1 to increase the structural strength of the reducing pipe 1. The inner diameter of the first socket 8 is larger than the inner diameter of the thin-diameter section to form an annular step surface. A second socket 5 is coaxially fixed to the inner bottom of the sealing head 4. Similarly, the second socket 5 can also increase the structural strength of the sealing head 4. When the pipe 2 is connected to the main pipe 2, sealant is first applied to the outer walls of both ends of the main pipe 2, and the two ends of the main pipe 2 are respectively plugged and sealed in the first socket 8 and the second socket 5, so that the entire basic support structure is more solid, so that it can adapt to the working conditions for a long time; in addition, in order to further ensure the connection strength with the main pipe 2, screws can also be used for connection. Before the screws are driven in, special glue is applied to the screws to play a role of fixing and sealing; the two ends of the air-permeable hose 3 are respectively plugged and sealed in the thick-diameter section of the reducer 1 and the straight wall of the head 4, and the outer wall of the air-permeable hose 3 is respectively adapted to fit the thick-diameter section of the reducer 1 and the straight wall of the head 4, and glue sealing can also be used to separate the connected air-permeable hose 3 and the main pipe 1;

[0022] The wall of the main pipe 2 is provided with multiple rows of flow holes 7 along the axial direction of the main pipe 2, so as to facilitate the uniform diffusion of the inflation pressure; as needed, the flow holes 7 are evenly arranged in four rows along the circumference of the main pipe 2, and the flow holes 7 in two adjacent rows are staggered; a spring ring 6 is provided in the outer gap of the main pipe 2, and as needed, the two ends of the spring ring 6 are respectively in contact with the reducing pipe 1 and the head 4 to prevent the spring ring 6 from moving; the spring ring 6 can be made of steel wire, and the entire spiral wire surface of the spring ring 6 is covered with a thermoplastic plastic sleeve, which can be specifically made of PVC material, the inner wall of the air-permeable hose 3 is fixedly connected with the outer wall of the corresponding plastic sleeve by hot-melt, and the spring ring 6 is used to firmly fix the air-permeable hose 3 to prevent it from moving and detaching, thereby achieving a better pressurization effect and greatly reducing the maintenance cost.

[0023] To implement the booster pipe of the utility model, it is necessary to first drill a pipe hole in the ground, then insert the connected and assembled booster pipe and the head 4 downward into the pipe hole, and then insert a number of drainage boards around the booster pipe. After that, the thin-diameter section of the reducer 1 is connected to the booster pump and started. The water in the soil will be pressurized and continuously penetrate into the drainage board, so as to be discharged outward and collected for utilization. Embodiment 2:

[0024] As attached Figure 2As shown, on the basis of Example 1, a first pressure ring 10 and a second pressure ring 11 are respectively sleeved on the corresponding tube bodies of the air-permeable hose 3 near the reducer 1 and the end cap 4, and the tube bodies of the air-permeable hose 3 near the first pressure ring 10 and the second pressure ring 11 are convex to form a corrugated ring convex portion 301, and the first pressure ring 10 and the second pressure ring 11 respectively crimp and fix the corresponding corrugated ring convex portion 301 to the corresponding end faces of the reducer 1 and the end cap 4. Specifically, the first pressure ring 10 and the second pressure ring 11 can be used as flanges, and the corrugated ring convex portion 301 can be used as flange gaskets, which are connected to the end faces of the reducer 1 and the end cap 4 by penetrating screws, thereby ensuring that the connecting end of the air-permeable hose 3 is completely sealed and firmly connected, greatly reducing the possibility of pressurization detachment and damage; according to needs, the annular step surface of the reducer 1 is encapsulated with a filter disc 9, and the filter disc 9 can also be made of non-woven fabric, which is pressed against and tightened by the main pipe 2 to filter the pressurized gas to a certain extent.

[0025] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, 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 above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A booster pipe, characterized in that: The invention comprises a breathable hose (3), a main pipe (2), a reducing pipe (1) and a sealing head (4), wherein the reducing pipe (1) comprises a thin-diameter section, a transition cone section and a thick-diameter section connected in sequence, wherein a first plug sleeve (8) is provided in the transition cone section and is coaxially fixed to the corresponding end of the thin-diameter section, wherein the inner diameter of the first plug sleeve (8) is larger than the inner diameter of the thin-diameter section to form an annular step surface, wherein a second plug sleeve (5) is coaxially fixed to the inner bottom of the sealing head (4), wherein the two ends of the main pipe (2) are respectively plugged and sealed in the first plug sleeve (8) and the second plug sleeve (5), and the two ends of the breathable hose (3) are respectively plugged and sealed in the thick-diameter section of the reducing pipe (1) and the straight wall of the sealing head (4); the wall of the main pipe (2) is provided with a plurality of rows of flow holes (7) all along the axial direction of the main pipe (2), a spring ferrule (6) is sleeved on the outer gap of the main pipe (2), and the inner wall of the breathable hose (3) is fixedly connected to the spring ferrule (6).

2. The boost pipe according to claim 1, characterized in that: The breathable hose (3) is made of non-woven fabric.

3. The boost pipe according to claim 1, characterized in that: The spring ferrule (6) is made of steel wire, the entire spiral wire surface of the spring ferrule (6) is covered with a thermoplastic plastic sleeve, and the inner wall of the air-permeable hose (3) is fixedly connected to the outer wall of the corresponding plastic sleeve by hot melting.

4. The boost pipe according to claim 1, characterized in that: A first pressing ring (10) and a second pressing ring (11) are respectively sleeved on the outer sides of the corresponding pipe bodies of the air-permeable hose (3) near the reducing pipe (1) and the sealing head (4); the pipe bodies of the air-permeable hose (3) near the first pressing ring (10) and the second pressing ring (11) are convex outward to form a folded ring convex portion (301); the first pressing ring (10) and the second pressing ring (11) respectively crimp and fix the corresponding folded ring convex portion (301) to the corresponding end faces of the reducing pipe (1) and the sealing head (4).

5. The boost pipe according to claim 1, characterized in that: The annular step surface of the reducing pipe (1) is encapsulated with a filter disc (9).

6. The boost pipe according to claim 1, characterized in that: The outer walls of both ends of the main pipe (2) are coated with sealant.

7. The boost pipe according to claim 1, characterized in that: The flow holes (7) are evenly arranged in four rows along the circumference of the main pipe (2), and the flow holes (7) in two adjacent rows are staggered.

8. The boost pipe according to claim 1, characterized in that: The two ends of the spring collar (6) are in corresponding contact with the reducing pipe (1) and the sealing head (4) respectively.

9. The boost pipe according to claim 1, characterized in that: The outer bottom of the sealing head (4) is a pointed head.

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