manhole device

Abstract

This invention relates to a manhole device, which is installed in a manhole formed downwards from the ground. The manhole device includes a corrugated pipe, a pipe support, and a manhole cover. The corrugated pipe is a hollow tubular structure with a plurality of raised and concave rings formed around its outer surface, and multiple holes formed in its pipe wall to connect the internal and external spaces of the corrugated pipe, facilitating water infiltration. The pipe support includes a flat plate with a central hole in the center, and upper and lower ring flanges formed on its upper and lower surfaces, respectively. The corrugated pipe is fixed to the lower part of the pipe support. The manhole cover is located above the central hole and has a plurality of through holes in its body to allow rainwater or surface water to pass through. The pipe support of this novel manhole device can be used with corrugated pipes of different sizes, which not only reduces mold development and inventory costs, but also balances structural strength and drainage infiltration effect, improving overall practicality.

Description

manhole device Technical Field

[0001] This invention relates to a manhole cover device, particularly one comprising a corrugated pipe, a pipe frame, and a manhole cover. The manhole device is a pipe rack that can accommodate various sizes of corrugated pipes. Prior Technology

[0002] Permeable manholes come in various sizes, and the manhole pipes are generally designed for one size and require one type of cover. Therefore, multiple sizes of pipes require multiple sizes of covers. In addition to the high cost of molds and development, each size of cover needs to be in stock, which takes up space and incurs high inventory costs.

[0003] In addition, early manhole pipes were made of single-layer plastic material, which had poor strength and was not suitable for some applications requiring high strength. Summary of the Invention

[0004] This invention relates to a manhole device for installation in a manhole on the ground. It includes a corrugated pipe with a plurality of raised rings on its outer surface and concave rings between the raised rings. The raised and concave rings surround the outer surface of the corrugated pipe, which has a plurality of holes. A pipe frame has a flat plate with a central hole. The upper surface of the flat plate protrudes upwards from the outside of the central hole, and the lower surface of the flat plate protrudes downwards from the outside of the central hole, forming a lower ring flange. The corrugated pipe is fixed to the pipe frame. The flat plate spans around the manhole, and the corrugated pipe is positioned within the manhole. A manhole cover is housed on the flat plate within the upper ring flange and is positioned above the central hole of the flat plate.

[0005] In one embodiment, the bellows is fixed to the lower ring flange.

[0006] In one embodiment, the bellows is fixed below the flat plate.

[0007] In one embodiment, the corrugated pipe is covered with a water-permeable non-woven fabric.

[0008] In one embodiment, the manhole cover is fixed to the top of the flat plate with screws.

[0009] In one embodiment, the flat plate is positioned around the manhole and backfilled with crushed stone or graded aggregate.

[0010] In one embodiment, the plate is locked in from top to bottom or inserted below the ground using plastic fixing nails.

[0011] In one embodiment, the plurality of holes are located at the positions of the convex ring and / or concave ring, so that the inside and outside of the bellows can communicate radially.

[0012] Compared with the prior art, this new technology has the following advantages:

[0013] 1. The present invention provides a pipe rack for a manhole device that is applicable to a variety of corrugated pipes of different sizes, which can reduce the development cost of molds for pipe racks of different sizes and also reduce the inventory of pipe racks.

[0014] 2. The new type of pipe uses a corrugated pipe and has an inner tube inside the corrugated pipe. The inner tube is bonded and fixed together with the corrugated pipe to increase its structural strength. Simple Explanation of the Diagram

[0015] Figure 1 is a schematic diagram of the appearance of this novel manhole device. Figure 2 is a three-dimensional exploded view of this novel manhole device. Figure 3 is a cross-sectional view of this novel manhole device. Figure 4 is a cross-sectional view of the novel manhole device placed in the manhole. Implementation

[0016] To provide a better understanding and appreciation of the features and characteristics of this invention, the following preferred embodiments are described in conjunction with the accompanying drawings:

[0017] Please refer to Figure 1. This new type of manhole device 100 is installed in a manhole 80 located below the ground 85 (see Figure 4). The manhole device 100 mainly includes a corrugated pipe 10, a pipe rack 20 and a manhole cover 30.

[0018] Please refer to Figures 2 and 3. In this embodiment, the corrugated pipe 10 is a hollow tubular structure, which provides better structural strength. In this embodiment, the corrugated pipe 10 is a circular tube. The outer surface of the corrugated pipe 10 has a plurality of convex rings 11, and a concave ring 12 is formed between two adjacent convex rings 11, so that the convex rings 11 and the concave rings 12 are arranged around the outer surface of the corrugated pipe 10. In addition, the pipe wall of the corrugated pipe 10 has a plurality of holes 13. These holes 13 can be provided at the positions of the convex rings 11 or the concave rings 12, or they can be provided at the positions of the convex rings 11 and the concave rings 12 at the same time. Through these holes 13, the internal space of the corrugated pipe 10 and the external space can be connected in the radial direction to facilitate water permeation. In another embodiment, the bellows 10 further has an inner tube 14, which is disposed inside the bellows 10 and fixed inside the concave ring 12 to form a double-layer structure, thereby improving the overall structural strength and making it suitable for situations with higher strength requirements.

[0019] Please refer to Figures 1-3. In this embodiment, the pipe rack 20 includes a flat plate 21 with a central hole 22 formed in the center of the flat plate 21. The upper surface of the flat plate 21 protrudes upward from the outside of the central hole 22 to form an upper annular flange 23, and the lower surface of the flat plate 21 protrudes downward from the outside of the central hole 22 to form a lower annular flange 24. The flat plate 21 is mounted on the ground around the manhole 80, so that the central hole 22 corresponds to the manhole 80. In this embodiment, the corrugated pipe 10 is fixed to the inner side of the lower annular flange 24 of the pipe frame 20. It is secured to the outer periphery of the corrugated pipe 10 through the screw hole 241 of the lower annular flange 24 by screws 16, or secured to the position of the concave ring 12 of the corrugated pipe 10 (not shown in the figure), thereby making the corrugated pipe 10 firmly connected to the pipe frame 20. In other embodiments, the corrugated pipe 10 can also be fixed to the outer side of the lower annular flange 24 of the pipe frame 20. In another embodiment, the plate 21 can also be provided with screw holes 25, so that the corrugated pipe 10 is directly fixed to the bottom of the plate 21 and fixed by screws, but it is not limited to this.

[0020] Please refer to Figures 1 and 2. In this embodiment, the manhole cover 30 is a flat plate with an upper surface 31 and a lower surface 32. The manhole cover 30 has a plurality of through holes 33, allowing the upper surface 31 and lower surface 32 to communicate with each other, facilitating water passage. The manhole cover 30 is housed on a flat plate 21 inside the upper annular flange 23 of the pipe frame 20, supported by the flat plate 21 and positioned above the central hole 22. In this embodiment, the manhole cover 30 is fixed to the flat plate 21 by screws 17 to prevent displacement due to external forces. Furthermore, since the corrugated pipe 10 in this embodiment is a circular pipe structure, the manhole cover 30, the flat plate 21, the central hole 22, the upper annular flange 23, and the lower annular flange 24 are all circular. In other embodiments, they can be changed to square or other polygonal shapes according to actual needs.

[0021] Referring to Figure 4, in one embodiment, the manhole device 100 includes a plurality of first permeable mesh pipes 50. These first permeable mesh pipes 50 are positioned relatively high on the outer side of the corrugated pipe 10, close to the ground surface 85, and extend horizontally and slightly inclined into the surrounding soil layer. Each first permeable mesh pipe 50 is a hollow tubular mesh structure with a plurality of permeable holes to allow water from the soil layer to infiltrate. In this embodiment, one end of each first permeable mesh pipe 50 is connected to the corrugated pipe 10, allowing water infiltrating into the soil layer from the surrounding soil surface to be guided through the first permeable mesh pipe 50 into the corrugated pipe 10, and then collected into the manhole device 100, thereby improving the overall water collection efficiency. Furthermore, referring to Figure 4, in this embodiment, the manhole device 100 further includes a plurality of second permeable mesh pipes 60. These second permeable mesh pipes 60 are positioned below and away from the ground surface 85 on the outer side of the corrugated pipe 10 and are connected to the corrugated pipe 10. Underground, their vertical height is much lower than that of the first permeable mesh pipe 50. The second permeable mesh pipe 60 is also a hollow tubular structure with a plurality of permeable holes, allowing water inside the corrugated pipe 10 to be discharged outwards through the second permeable mesh pipe 60 and infiltrate into the lower soil layers. As described above, water from the ground surface 85 flows into the corrugated pipe 10 of the manhole device 100, or is collected by the first permeable mesh pipe 50 and flows into the corrugated pipe 10, and then discharged through the corrugated pipe 10 and the second permeable mesh pipes 60 to infiltrate deeper underground layers.

[0022] Please refer to Figure 4. In this embodiment, during actual construction and installation, the plate 21 is horizontally positioned above the manhole 80, supporting the plate 21 on the ground surface or stratum around the manhole 80, thereby forming a stable bearing platform. After the plate 21 is positioned, crushed stone or graded material 81 can be backfilled into the gaps around the manhole 80 to enhance overall stability. In addition, to prevent the plate 21 from shifting under long-term use or external force, the plate 21 is provided with holes 210, through which multiple plastic fixing nails 211 can be inserted from top to bottom and locked into or inserted into the stratum or crushed stone or graded material 81 below the plate 21, thereby making the pipe rack 20 more firmly fixed to the ground after installation.

[0023] Please refer to Figure 4. In one embodiment, the corrugated pipe 10 may be covered with a layer of water-permeable non-woven fabric 40, which allows water to pass through while blocking impurities such as mud, sand and soil, thereby preventing soil erosion and blockage of the holes 13 of the corrugated pipe 10. In this embodiment, the water-permeable non-woven fabric 40 may be made of high-density polyethylene (HDPE), which has the advantages of being lightweight, tough, acid and alkali resistant and having low maintenance costs.

[0024] The above description is merely a preferred embodiment provided by this invention and is not intended to limit the scope of implementation of this invention. All equivalent variations made by those skilled in the art based on this invention should fall within the scope of this invention.

[0025] 100: Underground well device 10: Corrugated pipe 11:Protruding ring 12: Concave ring 13: Kong 14: Inner tube 16: Screws 17: Screws 20: Pipe rack 21: Tablet 22: Center Hole 23: Upper ring flange 24: Lower ring flange 241: Screw hole 25: Screw hole 30: Manhole cover 31: Upper surface 32: Lower surface 33: Through hole 40: Water-permeable nonwoven fabric 50: First permeable pipe 60: Second permeable pipe 80: Underground well hole 81: Crushed stone or graded materials 85: Ground 210: Kong 211: Plastic fixing nail

Claims

1. A manhole device for installation in a manhole on the ground, comprising a corrugated pipe having a plurality of raised rings on its outer surface and concave rings between the raised rings, the raised rings and the concave rings surrounding the outer surface of the corrugated pipe, the corrugated pipe having a plurality of holes; a pipe rack having a plate having a central hole, the upper surface of the plate protruding upward from the outside of the central hole with an upper annular flange, the lower surface of the plate protruding downward from the outside of the central hole with a lower annular flange, the corrugated pipe being fixedly attached to the pipe rack, the plate spanning around the manhole, the corrugated pipe being positioned in the manhole; and a manhole cover being housed on the plate within the upper annular flange, the manhole cover being positioned above the central hole of the plate.

2. The well device as described in claim 1, wherein, The bellows is fixed to the lower ring flange.

3. The well device as described in claim 2, wherein, The corrugated pipe is fixed below the flat plate.

4. The well device as described in claim 1, wherein, The corrugated pipe is covered with a water-permeable non-woven fabric.

5. The well device as described in claim 1, wherein, The manhole cover is secured to the top of the flat plate with screws.

6. The well device as described in claim 1, wherein, The flat plate is placed around the manhole and backfilled with crushed stone or graded aggregate.

7. The well device as described in claim 1 or claim 6, wherein, The plate is locked in from top to bottom or inserted below the ground using plastic fasteners.

8. The well device as described in claim 1, wherein, The plurality of holes are located at the positions of the convex ring and / or concave ring, so that the inside and outside of the bellows can communicate radially.

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