New vertical drainage wellhead sealing structure

Abstract

The utility model discloses a novel vertical drainage well head sealing structure, including a vertical drainage well, wherein a high molecular polymer mineral anti-seepage layer is fixedly installed on the outer wall of the vertical drainage well, a geotextile is installed on the upper part of the high molecular polymer mineral anti-seepage layer, a HDPE anti-seepage membrane is installed on the upper part of the geotextile, a vertical well recharge pipe connected to the inside is fixedly installed on the outer wall of the vertical drainage well, and a connecting plate is fixedly installed on the outer wall of the vertical drainage well. The utility model, by setting components such as a high molecular polymer mineral anti-seepage layer, a pipe throat clamp and fixing bolts, the high molecular polymer mineral anti-seepage material has plasticity and self-repairing properties as well as stable physical and chemical properties, can prevent cracks and leakage caused by foundation settlement or temperature difference changes, can effectively exert anti-seepage performance for a long time in a landfill, and the pipe throat clamp and fixing bolts can cooperate to further strengthen the connection to avoid the problem of difficult to ensure weld strength.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage landfill, in particular to a novel vertical drainage well head sealing structure. Background Art

[0002] With the acceleration of urbanization and population growth, land resources are becoming increasingly scarce, and the original domestic waste has entered the era of zero landfill. The original landfills are facing governance and closure. The composition of domestic waste is complex, and biological and chemical reactions will continue to occur during the landfill process and after closure, continuously producing leachate and landfill gas. It is necessary to set up leachate and landfill gas drainage wells to timely drain the leachate and landfill gas in the pile to ensure the safety and stability of the landfill.

[0003] Landfills will be temporarily covered during the landfill process, and will be sealed and waterproofed when they are closed, both of which involve HDPE waterproof membranes. The connection between the HDPE membrane and the vertical drainage wells in the landfill is a weak point in waterproofing, which is prone to landfill gas escape and leachate overflow. On the other hand, the landfill garbage is continuously degraded by microorganisms, and coupled with the compression of gravity, the garbage pile will settle, while the vertical drainage wells will not settle. It is very easy for the waterproof membrane at the vertical drainage wells to tear and break due to stretching, destroying the integrity and sealing of the waterproof layer in the landfill closure structure. After the closure, there are drainage layers and greening layers above the waterproof layer. Once the waterproof layer is damaged, it is very difficult to repair it, and it is not practical enough. Therefore, it is necessary to propose a new vertical drainage well head sealing structure to address the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a novel vertical drainage well head sealing structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A novel vertical drainage well head sealing structure comprises a vertical drainage well, wherein a polymer mineral anti-seepage layer is installed on the outer wall of the vertical drainage well, a geotextile is provided on the upper part of the polymer mineral anti-seepage layer, a HDPE anti-seepage membrane is installed on the upper part of the geotextile, a vertical well recharge pipe connected with the interior is fixedly installed on the outer wall of the vertical drainage well, a connecting plate is fixedly installed on the outer wall of the vertical drainage well, a cover plate is slidably installed on the upper end surface of the connecting plate, a plurality of downward bolts are installed through the bottom wall of the connecting plate by threaded rotation, the end of each downward bolt is fixedly connected to the downward plate by a connecting mechanism, a leachate drainage pipe, a high-pressure air inlet pipe and a gas collection pipe are fixedly installed on the upper end surface of the cover plate, and a baffle is fixedly connected to the upper end surface of the connecting plate by a supporting mechanism.

[0007] Preferably, the connection mechanism comprises a connection block fixedly mounted on the end of the pressing bolt, and the end of the connection block is rotatably connected with the bottom wall of the pressing plate.

[0008] Preferably, the support mechanism comprises a plurality of support rods fixedly mounted on the upper end surface of the connecting plate, and the end of each support rod is fixedly connected to the bottom wall of the baffle.

[0009] Preferably, a pipe throat clamp cooperating with the outer wall of the vertical drainage well is slidably mounted on the outer wall of the HDPE anti-seepage membrane, and the pipe throat clamp is locked on the outer wall of the HDPE anti-seepage membrane by fixing bolts.

[0010] Preferably, a sealing gasket that cooperates with the bottom wall of the cover plate is fixedly mounted on the upper end surface of the connecting plate, and the sealing gasket is made of vulcanized rubber.

[0011] Preferably, the inner wall of the vertical drainage shaft is provided with an anti-corrosion coating, and the anti-corrosion coating is a resin glass flake material.

[0012] Beneficial effects of the utility model:

[0013] 1. By setting up a high-molecular polymer mineral anti-seepage layer, pipe throat clamps and fixing bolts and other components to form a vertical drainage well head sealing structure. The high-molecular polymer mineral anti-seepage material has plasticity and self-repairing properties as well as stable physical and chemical properties, which can prevent cracks and leakage at the connection between the anti-seepage membrane and the vertical drainage pipe caused by foundation settlement or temperature difference changes. It can effectively play an anti-seepage performance for a long time in the landfill. The pipe throat clamp and fixing bolts can further strengthen the connection and avoid the problem of difficulty in ensuring the strength of the weld.

[0014] 2. By setting components such as a pressing bolt, a pressing plate and a sealing gasket, the pressing bolt is rotated to drive the pressing plate to descend through the cooperation of the connecting block, so that multiple pressing plates can press down and fix the cover plate, and the cover plate can also squeeze the sealing gasket. The sealing gasket can increase the sealing between the connecting plate and the cover plate to avoid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a novel vertical drainage wellhead sealing structure proposed by the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the vertical section structure;

[0017] Figure 3 This is a side structural schematic diagram of a novel vertical drainage wellhead sealing structure proposed by the utility model;

[0018] Figure 4 for Figure 1 A schematic diagram of the structure enlargement at point A;

[0019] Figure 5 for Figure 2 Schematic diagram of the enlarged structure at point B in FIG.

[0020] In the figure: 1 vertical drainage well, 2 HDPE anti-seepage membrane, 3 geotextile, 4 pipe throat clamp, 5 fixing bolt, 6 vertical well reinjection pipe, 7 connecting plate, 8 cover plate, 9 sealing gasket, 10 down-pressure bolt, 11 connecting block, 12 down-pressure plate, 13 leachate drainage pipe, 14 high-pressure air inlet pipe, 15 gas collection pipe, 16 support rod, 17 baffle, 18 anti-corrosion coating, 19 polymer mineral anti-seepage layer. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-5 The novel vertical drainage well head sealing structure comprises a vertical drainage well 1, wherein the outer wall of the vertical drainage well 1 is provided with a polymer mineral anti-seepage layer 19, which is formed by compacting a polymer mineral anti-seepage material, a geotextile 3 is provided on the upper part of the polymer mineral anti-seepage layer 19, a HDPE anti-seepage membrane 2 is provided on the upper part of the geotextile 3, a pipe throat clamp 4 cooperating with the outer wall of the vertical drainage well 1 is slidably provided on the outer wall of the HDPE anti-seepage membrane 2, the pipe throat clamp 4 is locked on the outer wall of the HDPE anti-seepage membrane 2 by a fixing bolt 5, and the outer wall of the vertical drainage well 1 is provided with a pipe throat clamp 4 cooperating with the outer wall of the vertical drainage well 1. A vertical shaft recharge pipe 6 connected to the interior is fixedly installed on the wall, a connecting plate 7 is fixedly installed on the outer wall of the vertical drainage well 1, a cover plate 8 is slidably installed on the upper end surface of the connecting plate 7, and a sealing gasket 9 matched with the bottom wall of the cover plate 8 is fixedly installed on the upper end surface of the connecting plate 7. The sealing gasket 9 is made of vulcanized rubber. Vulcanized rubber refers to vulcanized rubber, which has the characteristics of not changing stickiness and not being easy to break. It also has high elasticity, heat resistance, tensile strength and insolubility in organic solvents, etc. A plurality of downward bolts 10 are installed on the bottom wall of the connecting plate 7 through threaded rotation.

[0023] The end of each pressure bolt 10 is fixedly connected to a pressure plate 12 through a connecting mechanism, and the connecting mechanism includes a connecting block 11 fixedly installed on the end of the pressure bolt 10, and the end of the connecting block 11 is rotatably connected to the bottom wall of the pressure plate 12. A leachate drainage pipe 13, a high-pressure air inlet pipe 14 and a gas collecting pipe 15 are fixedly installed on the upper end surface of the cover plate 8. A baffle plate 17 is fixedly connected to the upper end surface of the connecting plate 7 through a supporting mechanism. The supporting mechanism includes a plurality of supporting rods 16 fixedly installed on the upper end surface of the connecting plate 7, and an end of each supporting rod 16 is fixedly connected to the bottom wall of the baffle plate 17. An anti-corrosion coating 18 is provided on the inner wall of the vertical drainage well 1. The anti-corrosion coating 18 is a resin glass flake material with high adhesion and excellent chemical resistance and anti-aging properties.

[0024] When the utility model is used, the polymer mineral anti-seepage material is laid around the vertical drainage well 1 and compacted to form a polymer mineral anti-seepage layer 19, which is tightly connected to the vertical drainage well 1. Then the geotextile 3 is laid on the polymer mineral anti-seepage layer 19, and then the HDPE anti-seepage membrane 2 is laid on the geotextile 3 and fixedly installed on the outer wall of the vertical drainage well 1 by monorail welding. The polymer mineral layer 19 can resist the settlement damage of the garbage pile, avoid the damage of the anti-seepage system, and prevent the leakage of leachate and landfill gas. The pipe throat clamp 4 is fixedly installed on the outer wall of the HDPE anti-seepage membrane 2 by fixing the bolts 5, thereby further reinforcing the connection, preventing the weld position from being pulled and damaged, and making the anti-seepage layer complete.

[0025] When installing the cover plate 8, the cover plate 8 can be slidably installed on the upper end surface of the connecting plate 7, and then the pressing bolt 10 can be rotated to drive the pressing plate 12 to descend through the cooperation of the connecting block 11, so that multiple pressing plates 12 can press down and fix the cover plate 8, and the cover plate 8 can also squeeze the sealing gasket 9. The sealing gasket 9 can increase the sealing between the connecting plate 7 and the cover plate 8 to avoid leakage. Through the cooperation of the baffle 17, external falling objects and acid rain can be shielded, thereby avoiding damage to each pipeline, and an anti-corrosion coating 18 is applied to the inner wall of the vertical drainage well 1 to increase the service life of the vertical drainage well 1.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel vertical drainage well head sealing structure, comprising a vertical drainage well (1), characterized in that: The outer wall of the vertical drainage well (1) is installed with a polymer mineral anti-seepage layer (19), a geotextile (3) is installed on the upper part of the polymer mineral anti-seepage layer (19), and a HDPE anti-seepage membrane (2) is installed on the upper part of the geotextile (3). The outer wall of the vertical drainage well (1) is fixedly installed with a vertical well recharge pipe (6) connected to the interior, and the outer wall of the vertical drainage well (1) is fixedly installed with a connecting plate (7), and a cover plate (8) is slidably installed on the upper end surface of the connecting plate (7). A plurality of downward pressure bolts (10) are installed through the bottom wall of the connecting plate (7) by threaded rotation, and the end of each downward pressure bolt (10) is fixedly connected to the downward pressure plate (12) through a connecting mechanism. The upper end surface of the cover plate (8) is fixedly installed with a leachate drainage pipe (13), a high-pressure air intake pipe (14) and a gas collection pipe (15), and the upper end surface of the connecting plate (7) is fixedly connected to a baffle (17) through a supporting mechanism.

2. The novel vertical drainage wellhead sealing structure according to claim 1 is characterized in that: The connection mechanism comprises a connection block (11) fixedly mounted on the end of the pressing bolt (10), and the end of the connection block (11) is rotatably connected to the bottom wall of the pressing plate (12).

3. The novel vertical drainage wellhead sealing structure according to claim 2 is characterized in that: The support mechanism comprises a plurality of support rods (16) fixedly mounted on the upper end surface of the connecting plate (7), and the end of each support rod (16) is fixedly connected to the bottom wall of the baffle (17).

4. The novel vertical drainage wellhead sealing structure according to claim 3 is characterized in that: A pipe throat clamp (4) that cooperates with the outer wall of the vertical drainage well (1) is slidably mounted on the outer wall of the HDPE anti-seepage membrane (2); the pipe throat clamp (4) is locked on the outer wall of the HDPE anti-seepage membrane (2) by means of fixing bolts (5).

5. The novel vertical drainage wellhead sealing structure according to claim 4 is characterized in that: A sealing gasket (9) is fixedly mounted on the upper end surface of the connecting plate (7) and matches the bottom wall of the cover plate (8); the sealing gasket (9) is made of vulcanized rubber.

6. The novel vertical drainage wellhead sealing structure according to claim 5 is characterized in that: The inner wall of the vertical drainage well (1) is provided with an anti-corrosion coating (18), and the anti-corrosion coating (18) is made of resin glass flake material.

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