A drainage blind pipe and urban rainwater recycling system

Abstract

The utility model discloses a drainage blind pipe and an urban rainwater recycling system to achieve the purpose of improving the rainwater recycling efficiency. The drainage blind pipe body includes a plurality of steel wire hoses with openings in the pipe wall, and the steel wire hoses are connected by a socket joint. The socket joint includes a short pipe, and the middle part of the outer wall of the short pipe has an annular protrusion. The two ends of the short pipe are respectively inserted into adjacent steel wire hoses, and the annular protrusion is stuck between the two steel wire hoses. In the groove of the urban rainwater recycling system, there are a soil backfill compaction layer, a graded crushed stone cushion layer, a water-stable crushed stone cushion layer and a permeable concrete from bottom to top, wherein the drainage blind pipe is laid in the graded crushed stone cushion layer. The utility model improves the water permeability and pipe structure strength of the drainage blind pipe by optimizing the drainage blind pipe structure and connection method, reduces the connection joints, can realize the conservation and recycling of water resources, improve the recycling efficiency of rainwater, and reduce the construction and maintenance costs.

Description

Technical Field

[0001] The utility model relates to a drainage pipeline, in particular to a drainage blind pipe. Background Art

[0002] Drainage blind pipes, also known as plastic blind pipes, seepage drainage blind pipes or blind ditches, are three-dimensional porous materials made by heating and melting thermoplastic synthetic resins, extruding fiber filaments through nozzles, and sintering their joints. The perforated drainage blind pipe has a unique structural design, and its porous structure allows groundwater to flow smoothly into the blind pipe and then be discharged through the drainage system.

[0003] At present, newly built parks and residential areas are becoming more and more "sponge-like", but over time, conventional drainage blind pipes have low opening rates, low strength, and easy blockage, resulting in poor infiltration and drainage effects, leading to a decrease in the efficiency of rainwater recovery systems. Utility Model Content

[0004] The utility model aims to solve the technical problem of providing a drainage blind pipe and an urban rainwater recycling system to achieve the purpose of improving the rainwater recycling efficiency.

[0005] In order to solve the above technical problems, according to one aspect of the utility model, a drainage blind pipe is provided, including a drainage blind pipe body and a geotextile wrapped around the outside of the drainage blind pipe body; the drainage blind pipe body includes a plurality of steel wire hoses with openings in the pipe wall, and the steel wire hoses are connected by a socket joint, and the socket joint includes a short pipe, and a ring-shaped protrusion is provided in the middle part of the outer wall of the short pipe, and the two ends of the short pipe are respectively inserted into adjacent steel wire hoses, and the ring-shaped protrusion is stuck between the two steel wire hoses.

[0006] Furthermore, the hole diameter of the steel wire hose is 5±0.5 mm, the porosity is 1%, and the hole spacing is 50±5 mm.

[0007] Furthermore, the steel wire hose is a DN50*5PVC steel wire hose.

[0008] Furthermore, the length of the steel wire hose is 30m.

[0009] According to another aspect of the utility model, an urban rainwater recycling system is provided, comprising a trench, wherein from bottom to top there are a plain soil backfill compaction layer, a graded gravel cushion layer, a water-stabilized gravel cushion layer and a permeable concrete, wherein the drainage blind pipe is laid in the graded gravel cushion layer.

[0010] The utility model improves the water permeability and pipe structure strength of the drainage blind pipe by optimizing the drainage blind pipe structure and connection mode, reduces the connection joints, and has low maintenance costs. Through the promotion and application of the new drainage blind pipe construction technology, it is possible to save and recycle water resources, improve the recycling efficiency of rainwater, and reduce construction and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings herein are used to provide further description of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0012] Figure 1 It is the drainage blind pipe structure diagram;

[0013] Figure 2 It is a schematic diagram of the socket joint structure;

[0014] Figure 3 This is a schematic diagram of drainage blind pipe connection;

[0015] Figure 4 It is a structural diagram of the urban rainwater recycling system.

[0016] In the figure, 1-geotextile, 2-steel hose, 3-socket joint, 4-plain soil backfill compaction layer, 5-graded crushed stone cushion layer, 6-water-stabilized crushed stone cushion layer, 7-permeable concrete, 8-drainage blind pipe. DETAILED DESCRIPTION

[0017] In order to make those skilled in the art better understand the present invention, the present invention is further explained in detail below with reference to the accompanying drawings and embodiments. It should be noted that the features in the embodiments and embodiments of the present application can be combined with each other without conflict.

[0018] A typical embodiment of the utility model provides a drainage blind pipe, which comprises a drainage blind pipe body and a geotextile 1 wrapped around the outside of the drainage blind pipe body; the drainage blind pipe body comprises a steel wire hose 2 with a plurality of pipe wall openings.

[0019] In a preferred embodiment, the opening diameter of the steel wire hose is 5±0.5 mm, the opening rate is 1%, and the hole spacing is 50±5 mm. The steel wire hose is a DN50*5PVC steel wire hose, and the length of the steel wire hose 2 is 30 m.

[0020] The steel wire hoses 2 are connected by a socket-type joint 3, and the socket-type joint 3 includes a short tube, and a ring-shaped protrusion is provided in the middle part of the outer wall of the short tube.

[0021] The outer diameters of both ends of the short tube are adapted to the inner diameter of the steel wire hose 2. When connecting the steel wire hose 2, the two ends of the short tube are respectively inserted into adjacent steel wire hoses 2, and the annular protrusion is stuck between the two steel wire hoses 2, and the annular protrusion is flush with the outer surface of the steel wire hose 2.

[0022] Compared with the existing drainage blind ditch, the new drainage blind pipe provided by the above implementation method is a hose, which can be used for arc design to ensure that the material does not deform and the drainage is not blocked. It is suitable for permeable paving, sunken green space, etc.

[0023] like Figure 4 As shown, another typical embodiment of the utility model provides an urban rainwater recovery system, including a groove, in which there are respectively a plain soil backfill compaction layer 4, a graded gravel cushion layer 5, a water-stabilized gravel cushion layer 6 and a permeable concrete 7 from bottom to top, wherein the graded gravel cushion layer 5 is laid with the drainage blind pipe 8 described in the utility model.

[0024] Among them, the compaction coefficient of the plain soil backfill compaction layer 4 is greater than 0.93, and the cement content in the water-stabilized crushed stone cushion layer 6 is greater than 5.0%.

[0025] A complete drainage system is an important part of urban infrastructure. The application of the above-mentioned urban rainwater recycling system can effectively improve the city’s drainage capacity, reduce urban waterlogging, and ensure the safety of citizens’ travel and life.

[0026] A relatively specific embodiment is provided below to further clearly and completely illustrate the technical solution claimed for protection of the utility model.

[0027] In this embodiment, the drainage blind pipe is composed of a DN50*5PVC steel hose with a length of 30m, a 200g / ㎡ geotextile, etc. The steel hose has an opening diameter of 5mm, an opening rate of 1%, and a hole spacing of 50mm.

[0028] The construction process is: measurement and layout → trench excavation → soil compaction → laying of anti-seepage geotextile and steel wire hose → backfilling.

[0029] (1) Measurement and layout

[0030] Total stations are used on site for surveying and laying out, following the principle of starting from the whole to the part.

[0031] (2) Trench excavation

[0032] Excavators are used on site in conjunction with manual labor to dig trenches, and the trench excavation depth, width, and slope meet the design requirements.

[0033] (3) Compacting the soil

[0034] The raw soil is backfilled and compacted by layering with a roller, and the compaction coefficient is greater than 0.93.

[0035] (4) Geotextile wrapped steel wire hose and laying

[0036] On site, 200g / ㎡ geotextile 1 is used to fully wrap the steel hose 2, and iron wire is used to fix the spacing of 1m. The steel hose 2 is connected on the ground with a socket joint and is manually laid in place.

[0037] Use materials that meet the design requirements for backfilling, and construct the graded crushed stone cushion layer 5, the water-stabilized crushed stone cushion layer 6 and the permeable concrete 7 in sequence.

[0038] The scope of protection claimed by the present invention is not limited to the above specific implementation methods. For those skilled in the art, the present invention may have various deformations and changes. Any modification, improvement and equivalent substitution made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drainage blind pipe, comprising a drainage blind pipe body and a geotextile wrapped around the drainage blind pipe body; characterized in that: The drainage blind pipe body includes a plurality of steel wire hoses with openings in the pipe wall, and the steel wire hoses are connected by a socket joint. The socket joint includes a short pipe, and a ring-shaped protrusion is provided in the middle of the outer wall of the short pipe. The two ends of the short pipe are respectively inserted into adjacent steel wire hoses, and the ring-shaped protrusion is stuck between the two steel wire hoses.

2. The drainage blind pipe according to claim 1, characterized in that: The hole diameter of the steel wire hose is 5±0.5mm, the opening rate is 1%, and the hole spacing is 50±5mm.

3. The drainage blind pipe according to claim 1 or 2, characterized in that: The steel wire hose is a DN50*5PVC steel wire hose.

4. The drainage blind pipe according to claim 3, characterized in that: The length of the steel wire hose is 30m.

5. An urban rainwater recycling system, characterized in that: The invention comprises a trench, wherein from bottom to top there are respectively a plain soil backfill compaction layer, a graded crushed stone cushion layer, a water-stable crushed stone cushion layer and a permeable concrete, wherein the drainage blind pipe according to any one of claims 1 to 4 is laid in the graded crushed stone cushion layer.

Images