Vacuum preloading device for preventing drainage plate from returning

Abstract

The utility model discloses a vacuum preloading device for preventing a drainage plate from returning, which comprises a drainage plate returning-preventing structure, the drainage plate returning-preventing structure comprises an earth surface vacuum film, an annular support frame, a conical clamping plate, a horn opening and a plain round steel bar, the earth surface vacuum film is laid at the upper end of the earth surface, and the annular support frame is arranged on the earth surface. A trumpet-shaped opening is fixed to the edge of the upper end of the annular supporting frame, a conical clamping plate is fixedly connected to the lower end of the annular supporting frame, the annular supporting frame is trumpet-shaped, and plain round steel bars are symmetrically and fixedly connected to the middle section of the inner wall of the conical clamping plate; the device further comprises a connecting part, the connecting part comprises a shaft seat, the shaft seat is arranged in the center of the upper portion of the earth surface vacuum film, the lower end of the middle of the shaft seat is sleeved with the upper end of the drainage plate, and the upper end of the middle of the shaft seat is sleeved with the lower end of the guide steel pipe. The drainage plate can be effectively prevented from returning in use, the use effect is improved, and the use requirement is met.

Description

Technical Field

[0001] This utility model relates to the field of drainage board technology, specifically a device for vacuum pre-compression to prevent drainage boards from relapsing. Background Technology

[0002] Drainage boards are a type of plastic building material, typically composed of a core board and a filter membrane. The core board is made of a mixture of polypropylene (PP) and polyethylene (PE) pressed into a double-layered, flat structure supported by raised dots or stiffening ribs. The filter membrane is made of long-fiber thermally rolled non-woven fabric wrapped around the core board. Drainage boards possess a certain degree of rigidity and flexibility, are resistant to water immersion, and have good water permeability.

[0003] Existing drainage boards, after being inserted into the soil, mainly rely on the frictional resistance formed between themselves and the inner wall of the soil to prevent themselves from being pulled back. However, when the soil moisture content is high and the soil itself is relatively loose, the drainage board inserted into the soil is prone to being pulled back. Therefore, a device is needed to prevent the drainage board from being pulled back in order to improve its performance. Utility Model Content

[0004] The purpose of this utility model is to provide a device for preventing drainage boards from being pulled back under vacuum preloading, in order to solve the problem mentioned in the background art, where existing drainage boards, after being inserted into the soil, mainly rely on the frictional resistance formed between them and the inner wall of the soil to prevent themselves from being pulled back. However, when the soil moisture content is high and the soil itself is relatively loose, the drainage boards inserted into the soil are prone to being pulled back.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] This utility model is a device for preventing backflow of drainage boards under vacuum preloading, comprising:

[0007] The drainage board anti-backflow structure includes a surface vacuum membrane, an annular support frame, a conical clamp, a horn-shaped opening, and plain round steel bars. The upper edge of the annular support frame is fixed with a horn-shaped opening, and the lower end of the annular support frame is fixedly connected with a conical clamp. The annular support frame is arranged in a horn shape, and the middle section of the inner wall of the conical clamp is symmetrically fixed with plain round steel bars.

[0008] Furthermore, the drainage backflow prevention structure also includes a drainage plate and a guide steel pipe, with the lower end of the drainage plate extending to the inner side and the upper end of the drainage plate connecting to the guide steel pipe.

[0009] Furthermore, it also includes a connecting part, which includes a bearing seat. The bearing seat is positioned at the center above the vacuum membrane on the ground surface, and the lower end of the middle part of the bearing seat is sleeved with the upper end of the drainage plate, while the upper end of the middle part of the bearing seat is sleeved with the lower end of the guide steel pipe.

[0010] Furthermore, the connecting part also includes a positioning block and a positioning post. The positioning block is symmetrically engaged on opposite sides of the upper end of the bearing seat, and a positioning post is fixed in the middle of one end of the positioning block. A threaded hole is opened through the middle of one end of the positioning post.

[0011] Furthermore, the connecting part also includes a barrier, a torsion spring, and a movable plate. The barrier is sleeved on the inner edge of the upper end of the bearing seat, and a torsion spring is provided through the upper part of one end of the barrier. The inner side of the torsion spring is fixed to the lower part of both sides of the movable plate.

[0012] Furthermore, the upper part of both sides of the movable plate is provided with protrusions, and the protrusions abut against the inner wall of the enclosure.

[0013] This utility model has the following beneficial effects:

[0014] I. This utility model uses a funnel-shaped structure for the ring support frame, with the funnel opening at the top accommodating the installation of the drainage board. Plain round steel bars are used to position the conical clamping plate. Furthermore, the surrounding sealing walls, sealing trenches, and surface vacuum membrane create a closed environment for the soil to be treated. During vacuuming under the membrane, negative pressure is gradually formed in the surface sand cushion and vertical drainage channels, causing the membrane to bear the pressure difference between the inside and outside of the membrane and the overload preload. The negative pressure is transmitted downwards along the vertical drainage channels. The unequal pressure between the soil and the vertical drainage channels further transmits the negative pressure into the soil. Under this pressure difference, pore water gradually seeps into the vertical drainage channels and is continuously discharged through pipes connected to the drainage pipe ends. As water is discharged from the soil and the groundwater level decreases, the additional stress in the soil increases, thereby achieving drainage consolidation and enhanced soil strength.

[0015] II. Based on the above-mentioned beneficial effects, in the process of drainage and solidification of soil, the drainage board is connected by a shaft seat, which can rotate freely to avoid bending. Furthermore, the guide steel pipe connected to the drainage board is surrounded by a barrier, and the barrier is elastically equipped with a movable plate. The adjustable movable plate can be used to receive the water outlet end of the guide steel pipe, further improving the backflow prevention effect of the drainage board. Attached Figure Description

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a cross-sectional view of the utility model;

[0018] Figure 2 This is a top view of the utility model;

[0019] Figure 3 This is a schematic diagram of the connecting part of this utility model.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] In the diagram: 11. Surface vacuum membrane; 12. Circular support frame; 13. Conical clamp; 14. Trumpet opening; 15. Plain round steel bar; 16. Drainage board; 17. Guide steel pipe; 21. Shaft seat; 22. Positioning block; 23. Positioning column; 24. Enclosure; 25. Torsion spring; 26. Movable plate. Detailed Implementation

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0024] Please see Figure 1-3 As shown, this utility model is a device for preventing the backflow of a vacuum pre-compression drainage board, comprising:

[0025] The drainage board anti-backflow structure includes a surface vacuum membrane 11, an annular support frame 12, a conical clamping plate 13, a horn-shaped opening 14, and plain round steel bars 15. The surface vacuum membrane 11 is laid on the upper end of the ground. The upper edge of the annular support frame 12 is fixed with a horn-shaped opening 14, and the lower end of the annular support frame 12 is fixedly connected with a conical clamping plate 13. The annular support frame 12 is arranged in a horn shape, and the inner wall of the conical clamping plate 13 is symmetrically fixedly connected with plain round steel bars 15.

[0026] The soil to be treated is sealed by the surrounding sealing walls, sealing trenches and the surface vacuum membrane 11, forming a closed environment. When vacuuming is performed under the membrane, the negative pressure can be used to quickly drain water, thereby improving the soil consolidation degree, enhancing soil strength, and improving the anti-backflow effect of the drainage board. The ring support frame 12 accommodates the installation of the horn opening 14 and the conical clamp 13. The horn opening 14 accommodates the installation of the drainage board. The plain round steel bar 15 limits the position of the conical clamp, further improving the anti-backflow effect of the drainage board.

[0027] The drainage and backflow prevention structure also includes a drainage board 16 and a guide steel pipe 17. The lower end of the drainage board 16 extends to the inner side of the conical clamp 13, and the upper end of the drainage board 16 is fitted with the guide steel pipe 17. The guide steel pipe 17 works with the drainage board 16 to drain water from the soil.

[0028] Working principle: The soil to be treated is sealed by the surrounding sealing walls, sealing trenches and the surface vacuum membrane 11, forming a closed environment. The drainage board is pre-installed in the middle of the conical clamp 13 and inserted into the soil. The upper end of the drainage board is connected to the drainage pipe to form a closed drainage channel. When vacuum is drawn under the membrane, negative pressure is gradually formed in the surface sand cushion layer and the vertical drainage channel. The surface vacuum membrane 11 bears the pressure difference between the inside and outside of the membrane and the load of overload preloading. The negative pressure is transmitted downward along the vertical drainage channel. The unequal pressure state between the soil and the vertical drainage channel also causes the negative pressure to be transmitted into the soil. Under the action of this pressure difference, pore water gradually seeps into the vertical drainage channel and is discharged through the drainage board 16. As the water in the soil is discharged and the groundwater level drops, the additional stress in the soil increases, drainage consolidation occurs, and the soil strength is enhanced.

[0029] This solution can effectively prevent backflow during the use of drainage boards, improve performance, and meet usage requirements.

[0030] Please see Figure 1-3 As shown, this embodiment is based on the above embodiment 1, and further includes a connecting part. The connecting part includes a bearing 21. The bearing 21 is arranged in the center above the ground vacuum membrane 11, and the lower end of the middle part of the bearing 21 is sleeved with the upper end of the drainage pipe, and the upper end of the middle part of the bearing 21 is sleeved with the lower end of the guide steel pipe 17.

[0031] The bearing seat 21 is used to fix the drainage plate 16 and the guide steel pipe 17, which can meet the rotation requirements and prevent bending.

[0032] The connecting part also includes a positioning block 22 and a positioning post 23. The positioning block 22 is symmetrically engaged on the opposite sides of the upper end of the bearing seat 21, and the positioning post 23 is fixed in the middle of one end of the positioning block 22. A threaded hole is opened through the middle of one end of the positioning post 23.

[0033] The positioning block 22 is used to install and fix the positioning post 23. The positioning post 23 can be installed and fixed by inserting and tightening the bolt into the threaded hole, thereby fixing the shaft seat 21.

[0034] The connecting part also includes a retaining wall 24, a torsion spring 25 and a movable plate 26. The retaining wall 24 is sleeved on the inner edge of the upper end of the bearing seat 21, and the upper part of one end of the retaining wall 24 is provided with a torsion spring 25. The inner side of the torsion spring 25 is fixed to the lower part of both sides of the movable plate 26.

[0035] The enclosure 24 provides external isolation and protection for the bearing seat 21, and the torsion spring 25 is installed and fixed to the bearing seat 21. The elastic force of the torsion spring 25 can meet the different angle conversion of the movable plate 26 after being subjected to force, so as to meet the support of the guide steel pipe 17 and avoid bending, which would affect the subsequent drainage.

[0036] The upper part of both sides of the movable panel 26 is provided with protrusions, and the protrusions abut against the inner wall of the enclosure 24;

[0037] The contact between the protrusion and the inner wall of the enclosure 24 ensures the stability of the structure when the movable panel 26 is perpendicular to the horizontal plane.

[0038] This solution utilizes an adjustable movable plate 26 to support the water outlet end of the guide steel pipe 17, thereby preventing the drainage board 16 from bending, improving drainage efficiency, further accelerating soil drainage consolidation efficiency, and further enhancing the anti-backflow effect of the drainage board.

[0039] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for preventing backflow of drainage boards under vacuum preloading, characterized in that, include: The drainage board anti-backflow structure includes a surface vacuum membrane (11), an annular support frame (12), a conical clamp (13), a horn opening (14), and plain round steel bars (15). The surface vacuum membrane (11) is laid on the upper end of the ground. The upper edge of the annular support frame (12) is fixed with a horn opening (14), and the lower end of the annular support frame (12) is fixedly connected with a conical clamp (13). The annular support frame (12) is horn-shaped, and the middle section of the inner wall of the conical clamp (13) is symmetrically fixedly connected with plain round steel bars (15).

2. The device for preventing backflow of drainage boards under vacuum preloading according to claim 1, characterized in that: The drainage and backflow prevention structure also includes a drainage plate (16) and a guide steel pipe (17). The lower end of the drainage plate (16) extends to the inner side of the conical clamp (13), and the upper end of the drainage plate (16) is fitted with the guide steel pipe (17).

3. The device for preventing backflow of drainage boards under vacuum preloading according to claim 1, characterized in that: It also includes a connecting part, which includes a bearing (21). The bearing (21) is positioned at the center above the surface vacuum membrane (11), and the lower end of the middle part of the bearing (21) is sleeved with the upper end of the drainage plate (16), and the upper end of the middle part of the bearing (21) is sleeved with the lower end of the guide steel pipe (17).

4. The device for preventing backflow of drainage boards under vacuum preloading according to claim 3, characterized in that: The connecting part also includes a positioning block (22) and a positioning post (23). The positioning block (22) is symmetrically engaged on opposite sides of the upper end of the bearing seat (21), and a positioning post (23) is fixed in the middle of one end of the positioning block (22). A threaded hole is opened through the middle of one end of the positioning post (23).

5. The device for preventing backflow of drainage boards under vacuum preloading according to claim 1, characterized in that: The connecting part also includes a barrier (24), a torsion spring (25) and a movable plate (26). The barrier (24) is sleeved on the inner edge of the upper end of the bearing seat (21), and a torsion spring (25) is provided through the upper part of one end of the barrier (24). The inner side of the torsion spring (25) is fixed to the lower part of both sides of the movable plate (26).

6. The device for preventing backflow of drainage boards under vacuum preloading according to claim 5, characterized in that: The upper part of both sides of the movable plate (26) is provided with protrusions, and the protrusions abut against the inner wall of the enclosure (24).

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