Plastic precipitation well pipe

Abstract

The application discloses a plastic dewatering well pipe, which comprises a plurality of unit pipe sections connected in a head-to-tail mode, wherein each unit pipe section comprises a plastic outer pipe, a plastic inner pipe and a water filtering yarn layer; the plastic outer pipe is provided with a plurality of first water permeable holes, and the outer wall of the plastic outer pipe is formed with spiral convex ridges; the plastic inner pipe is inserted into the plastic outer pipe and is provided with a plurality of second water permeable holes; the positions of the first water permeable holes correspond to the positions of the second water permeable holes; and the water filtering yarn layer is embedded between the plastic outer pipe and the plastic inner pipe, and the eye of the yarn layer is smaller than the first water permeable holes or the second water permeable holes. The application solves the problems of the dewatering well with the concrete sandless pipe, such as heavy pipe quality, complex pipe connection process, low pipe body strength and easy breakage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a plastic dewatering well pipe. BACKGROUND

[0002] In building engineering, dewatering well is a common dewatering method for foundation pit. The conventional dewatering well pipe mainly includes concrete sand-free pipe, PVC double-wall corrugated pipe with nylon filter screen, etc. Among them, the concrete sand-free pipe has the defects of heavy quality, complex connection process between well pipes, low pipe body strength, and easy breakage. The PVC double-wall corrugated pipe with nylon filter screen needs to be manually processed before construction, which is relatively cumbersome and difficult to control the quality.

[0003] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present application and should not be taken as an acknowledgment or any form of suggestion that this information forms prior art that is publicly known. SUMMARY

[0004] In order to overcome the defects of the prior art, the present application provides a plastic dewatering well pipe to solve the problems of heavy quality of well pipe, complex connection process between well pipes, low pipe body strength, and easy breakage of the dewatering well using concrete sand-free pipe.

[0005] To achieve the above-mentioned purpose, a plastic dewatering well pipe is provided, which comprises a plurality of unit pipe sections connected in series, wherein each unit pipe section comprises:

[0006] a plastic outer pipe, which is provided with a plurality of first water-permeable holes, and the outer wall of the plastic outer pipe is formed with spiral convex ridges;

[0007] a plastic inner pipe, which is inserted into the plastic outer pipe, and the plastic inner pipe is provided with a plurality of second water-permeable holes, the positions of the first water-permeable holes corresponding to the positions of the second water-permeable holes;

[0008] a filter gauze layer, which is embedded between the plastic outer pipe and the plastic inner pipe, and the eyelet of the filter gauze layer is smaller than the first water-permeable holes or the second water-permeable holes.

[0009] Further, the aperture of the first water-permeable holes is adapted to the aperture of the second water-permeable holes.

[0010] Further, the plastic outer pipe and the plastic inner pipe are polyethylene pipes.

[0011] Further, the lower end of the plastic inner tube extends outwardly and forms a supporting flange which supports the lower end of the plastic outer tube, the outer edge of the supporting flange forms a first sleeve, the upper end of the first sleeve is sleeved on the lower end of the plastic outer tube, the upper end of the plastic outer tube is sleeved with a second sleeve, the end of the second sleeve away from the plastic outer tube forms a plug-in connector, the plug-in connector is plugged into the lower end of the first sleeve, the plug-in connector forms a communication hole which communicates with the plastic inner tubes of two adjacent unit pipe sections.

[0012] Further, the size of the communication hole is adapted to the inner diameter of the plastic inner tube, the inner edge of the plug-in connector extends towards the inner side of the plastic outer tube and forms a stop flange, the end surface of the upper end of the plastic inner tube is below the end surface of the upper end of the plastic outer tube, the end surface of the upper end of the plastic inner tube is supported on the stop flange, and the stop flange is attached to the inner wall of the plastic outer tube.

[0013] The plastic dewatering well pipe has the advantages that the main body material is double-layer high-density polyethylene, the outer pipe is designed with ribs to improve the strength of the pipe body, the middle layer is provided with a nylon filter screen layer, the outer pipe and the inner pipe are designed with spaced water permeable holes, and the pipe has the characteristics of light weight, high strength, good water permeability and convenient construction. BRIEF DESCRIPTION OF DRAWINGS

[0014] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings:

[0015] Figure 1 FIG. 1 is a structural schematic view of a plastic dewatering well pipe according to an embodiment of the present application.

[0016] Figure 2 FIG. 2 is a sectional view of A-A in FIG. 1. Figure 1

[0017] Figure 3 FIG. 3 is a front view of the plastic dewatering well pipe according to an embodiment of the present application.

[0018] Figure 4 FIG. 4 is a sectional view of B-B in FIG. 3. Figure 3

[0019] FIG. 5 is a structural schematic view of a connection node of two adjacent unit pipe sections according to an embodiment of the present application. Figure 5

[0020] FIG. 6 is an exploded structural schematic view of the connection node of two adjacent unit pipe sections according to an embodiment of the present application. Figure 6 DETAILED DESCRIPTION

[0021] ​​The application will be described in further detail below with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not intended to limit the application. In addition, it should be noted that only parts related to the application are shown in the drawings for ease of description.

[0022] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in further detail below with reference to the drawings and embodiments.

[0023] Referring to Figures 1 to 6 The present application provides a plastic dewatering well pipe, comprising a plurality of unit pipe sections. The plurality of unit pipe sections are coaxially arranged and connected end to end.

[0024] Specifically, the unit pipe section comprises a plastic outer pipe 1, a plastic inner pipe 2, and a water filtering yarn layer 3.

[0025] The plastic outer pipe 1 and the plastic inner pipe 2 are polyethylene pipes.

[0026] In the present embodiment, the plastic outer pipe 1 is provided with a plurality of first water permeable holes a. The outer wall of the plastic outer pipe 1 is formed with a spiral convex ridge 11.

[0027] The water filtering yarn layer 3 is embedded between the plastic outer pipe 1 and the plastic inner pipe 2. The plastic inner pipe 2 is inserted into the plastic outer pipe 1. The outer diameter of the plastic inner pipe is slightly smaller than the inner diameter of the plastic outer pipe. The plastic inner pipe is coaxially arranged in the plastic outer pipe. The distance between the outer wall of the plastic inner pipe and the inner wall of the plastic outer pipe is adapted to the thickness of the water filtering yarn layer.

[0028] The plastic inner pipe 2 is provided with a plurality of second water permeable holes b. The positions of the first water permeable holes a correspond to the positions of the second water permeable holes b. The eyelet of the water filtering yarn layer 3 is smaller than the first water permeable holes a or the second water permeable holes b. The hole diameter of the first water permeable holes a is adapted to the hole diameter of the second water permeable holes b.

[0029] The water filtering yarn layer is in the shape of a cylinder and covers the outside of the plastic inner pipe.

[0030] Referring to Figure 5 and Figure 6 As shown in the drawings, the lower end of the plastic inner pipe 2 extends outward to form a support flange 21 which supports the lower end of the plastic outer pipe 1. The outer edge of the support flange 21 is formed with a first sleeve 22. The upper end of the first sleeve 22 is sleeved on the lower end of the plastic outer pipe 1. The upper end of the plastic outer pipe 1 is sleeved with a second sleeve 12. The end of the second sleeve 12 away from the plastic outer pipe 1 is formed with a plug-in connector 13. The plug-in connector 13 is plugged into the lower end of the first sleeve 22. The plug-in connector 13 is formed with a communication hole. The communication hole is communicated with the plastic inner pipes 2 of two adjacent unit pipe sections.

[0031] In this embodiment, the inner wall of the upper end of the first sleeve is formed with internal threads. The outer wall of the lower end of the plastic outer tube is formed with external threads. The lower end of the plastic outer tube is screwed to the upper end of the first sleeve.

[0032] In this embodiment, the inner wall of the lower end of the second sleeve is formed with internal threads. The outer wall of the upper end of the plastic outer tube is formed with external threads. The upper end of the plastic outer tube is screwed to the lower end of the second sleeve.

[0033] In this embodiment, the plug is cylindrical. The outer diameter of the plug is adapted to the inner diameter of the first sleeve. The inner diameter of the first sleeve is adapted to the outer diameter of the plastic outer tube. The outer side of the plug is formed with external threads. The lower end of the first sleeve is formed with internal threads. The plug is screwed to the lower end of the first sleeve.

[0034] The size of the communication hole is adapted to the inner diameter of the plastic inner tube 2. The inner edge of the plug 13 extends towards the inner side of the plastic outer tube 1 to form an abutment flange 14. The end face of the upper end of the plastic inner tube 2 is located below the end face of the upper end of the plastic outer tube 1. The end face of the upper end of the plastic inner tube 2 is supported by the abutment flange 14. The abutment flange 14 abuts the inner wall of the plastic outer tube 1.

[0035] The plastic dewatering well pipe of the present application has a main body made of double-layer high-density polyethylene, an outer tube with a rib design to improve the strength of the pipe body, a nylon filter screen layer in the middle layer for the purpose of filtering water, and spaced water-permeable holes designed on the outer tube and the inner tube, which has the characteristics of light weight, high strength, good water permeability, and convenient construction.

[0036] The plastic dewatering well pipe of the present application is installed by first processing the pipe well according to the drawings and then installing the well pipe.

[0037] The ribbed high-density polyethylene outer tube of the plastic dewatering well pipe of the present application can reduce the amount of pipe body material and improve the overall strength.

[0038] The filter screen layer of the plastic dewatering well pipe of the present application has the characteristics of good water permeability and high strength.

[0039] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features can be replaced with the technical features disclosed in the present application (but not limited to) with similar functions to form technical solutions.

Claims

1. A plastic dewatering well pipe, characterized in that, The pipe comprises a plurality of unit pipe sections connected end to end, and each unit pipe section comprises: a plastic outer pipe having a plurality of first water-permeable holes, and a helical protrusion formed on the outer wall of the plastic outer pipe; a plastic inner pipe inserted into the plastic outer pipe, the plastic inner pipe having a plurality of second water-permeable holes, the positions of the first water-permeable holes corresponding to the positions of the second water-permeable holes; a water filtering yarn layer embedded between the plastic outer pipe and the plastic inner pipe, the yarn eye of the water filtering yarn layer being smaller than the first water-permeable holes or the second water-permeable holes; the lower end of the plastic inner pipe extending outward to form a supporting flange supporting the lower end of the plastic outer pipe, the outer edge of the supporting flange forming a first sleeve, the upper end of the first sleeve being sleeved on the lower end of the plastic outer pipe, the upper end of the plastic outer pipe being sleeved with a second sleeve, the end of the second sleeve away from the plastic outer pipe forming a plug-in connector, the plug-in connector being plugged into the lower end of the first sleeve, the plug-in connector forming a communication hole, the communication hole being in communication with the plastic inner pipes of two adjacent unit pipe sections; the size of the communication hole being adapted to the inner diameter of the plastic inner pipe, the inner edge of the plug-in connector extending toward the inner side of the plastic outer pipe to form a buttress flange, the end surface of the upper end of the plastic inner pipe being located below the end surface of the upper end of the plastic outer pipe, the end surface of the upper end of the plastic inner pipe being supported on the buttress flange, the buttress flange being fitted to the inner wall of the plastic outer pipe.

2. The plastic dewatering well pipe according to claim 1, characterized in that, the aperture of the first water-permeable holes being adapted to the aperture of the second water-permeable holes.

3. The plastic dewatering well pipe of claim 1, wherein, the plastic outer pipe and the plastic inner pipe are polyethylene pipes.

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