Plastic dewatering well pipe

Abstract

The invention discloses a plastic dewatering well pipe which comprises a plurality of unit pipe joints connected end to end, each unit pipe joint comprises a plastic outer pipe, a plurality of first water permeable holes are formed in the plastic outer pipe, and spiral protruding edges are formed on the outer wall of the plastic outer pipe; the plastic inner pipe is inserted into the plastic outer pipe, a plurality of second water permeable holes are formed in the plastic inner pipe, and the positions of the first water permeable holes correspond to the positions of the second water permeable holes; the water filtering yarn layer is embedded between the plastic outer pipe and the plastic inner pipe, and yarn holes of the water filtering yarn layer are smaller than the first water permeable holes or the second water permeable holes. The problems that a dewatering well adopting a concrete sand-free pipe is heavy in well pipe mass, complex in well pipe connecting procedure, low in pipe body strength and prone to being broken are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a plastic precipitation well pipe. Background Art

[0002] In construction projects, dewatering wells are a common means of foundation pit dewatering. Conventional dewatering well pipes are mainly concrete sandless pipes, PVC double-wall corrugated pipes with nylon filters, etc. Among them, concrete sandless pipes have the disadvantages of being heavy, complicated connection procedures between well pipes, low pipe strength, and easy to break. PVC double-wall corrugated pipes with nylon filters need to be manually processed before construction, which is cumbersome and difficult to control quality.

[0003] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0004] In order to overcome the defects of the prior art, a plastic precipitation well pipe is provided to solve the problems of heavy well pipe mass, complex connection process, low pipe body strength and easy breakage in precipitation wells using concrete sandless pipes.

[0005] In order to achieve the above object, a plastic precipitation well pipe is provided, comprising a plurality of unit pipe sections connected end to end, wherein the unit pipe section comprises:

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

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

[0008] The water filter yarn layer is embedded between the plastic outer tube and the plastic inner tube, and the yarn mesh of the water filter yarn layer is smaller than the first water permeable hole or the second water permeable hole.

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

[0010] Furthermore, the plastic outer tube and the plastic inner tube are polyethylene tubes.

[0011] Furthermore, the lower end of the plastic inner tube extends outward to form a supporting flange supported on 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 is formed with a plug connector, the plug connector is plugged into the lower end of the first sleeve, the plug connector forms a connecting through hole, and the connecting through hole is connected to the plastic inner tubes of two adjacent unit pipe sections.

[0012] Furthermore, the size of the communication through hole is adapted to the inner diameter of the plastic inner tube, the inner edge of the plug joint extends toward the inner side of the plastic outer tube to form a top flange, the end face of the upper end of the plastic inner tube is located below the end face of the upper end of the plastic outer tube, the end face of the upper end of the plastic inner tube is supported by the top flange, and the top flange is attached to the inner wall of the plastic outer tube.

[0013] The beneficial effect of the present invention is that the main material of the plastic precipitation well pipe of the present invention is double-layer high-density polyethylene, the outer pipe is ribbed to improve the strength of the pipe body, the middle layer is provided with a dense nylon water filter mesh layer, and the outer pipe and the inner pipe are designed with spaced water-permeable holes. It has the characteristics of lightness, high strength, good water permeability and convenient construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0015] Figure 1 It is a schematic structural diagram of a plastic precipitation well pipe according to an embodiment of the present invention.

[0016] Figure 2 for Figure 1 Cross-sectional view at AA in .

[0017] Figure 3 It is a front view of the plastic precipitation well pipe according to an embodiment of the present invention.

[0018] Figure 4 for Figure 3 Cross-sectional view at BB in .

[0019] Figure 5 It is a schematic structural diagram of a connection node between two adjacent unit pipe sections according to an embodiment of the present invention.

[0020] Figure 6 It is a schematic diagram of the decomposed structure of the connection node of two adjacent unit pipe sections according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] Reference Figures 1 to 6 As shown, the present invention provides a plastic precipitation 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 includes: a plastic outer pipe 1 , a plastic inner pipe 2 , and a water filter yarn layer 3 .

[0025] Wherein, the plastic outer tube 1 and the plastic inner tube 2 are polyethylene tubes.

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

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

[0028] The plastic inner tube 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 mesh of the water-filtering yarn layer 3 is smaller than the first water-permeable holes a or the second water-permeable holes b. The aperture of the first water-permeable holes a is adapted to the aperture of the second water-permeable holes b.

[0029] The water filter yarn layer is cylindrical and is coated on the outside of the plastic inner tube.

[0030] See Figure Figure 5 and Figure 6 As shown, the lower end of the plastic inner tube 2 extends outward to form a supporting flange 21 supported on the lower end of the plastic outer tube 1. The outer edge of the supporting flange 21 forms a first sleeve 22. The upper end of the first sleeve 22 is sleeved on the lower end of the plastic outer tube 1. The upper end of the plastic outer tube 1 is sleeved with a second sleeve 12. The end of the second sleeve 12 away from the plastic outer tube 1 is formed with a plug connector 13. The plug connector 13 is plugged into the lower end of the first sleeve 22. The plug connector 13 is formed with a communication through hole. The communication through hole is connected to the plastic inner tubes 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 an internal thread, the outer wall of the lower end of the plastic outer tube is formed with an external thread, and 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 an internal thread, the outer wall of the upper end of the plastic outer tube is formed with an external thread, and the upper end of the plastic outer tube is screwed to the lower end of the second sleeve.

[0033] In this embodiment, the plug connector is cylindrical. The outer diameter of the plug connector 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. An outer side of the plug connector is formed with an outer thread. The lower end of the first sleeve is formed with an inner thread. The plug connector is screwed to the lower end of the first sleeve.

[0034] The size of the communication through hole is adapted to the inner diameter of the plastic inner tube 2. The inner edge of the plug connector 13 extends toward the inner side of the plastic outer tube 1 to form a top flange 14. The end surface of the upper end of the plastic inner tube 2 is located below the end surface of the upper end of the plastic outer tube 1. The end surface of the upper end of the plastic inner tube 2 is supported by the top flange 14. The top flange 14 is attached to the inner wall of the plastic outer tube 1.

[0035] The plastic drainage well pipe of the present invention is mainly made of 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 dense nylon water filter mesh layer, and the outer pipe and the inner pipe are designed with spaced water-permeable holes. It has the characteristics of lightness, high strength, good water permeability and convenient construction.

[0036] When installing the plastic precipitation well pipe of the present invention, the well pipe is first processed according to the drawings and then the well pipe is installed.

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

[0038] The water filter yarn layer of the plastic precipitation well pipe of the present invention has the characteristics of good water permeability and high strength.

[0039] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but 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 are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A plastic precipitation well pipe, characterized in that: It comprises a plurality of unit pipe sections connected end to end, and the unit pipe section comprises: A plastic outer tube, wherein the plastic outer tube is provided with a plurality of first water-permeable holes, and the outer wall of the plastic outer tube is formed with spiral convex ridges; A plastic inner tube is inserted into the plastic outer tube, the plastic inner tube is provided with a plurality of second water-permeable holes, and the positions of the first water-permeable holes correspond to the positions of the second water-permeable holes; The water filter yarn layer is embedded between the plastic outer tube and the plastic inner tube, and the yarn mesh of the water filter yarn layer is smaller than the first water permeable hole or the second water permeable hole.

2. The plastic drainage well pipe according to claim 1, characterized in that: The aperture of the first water-permeable hole is adapted to the aperture of the second water-permeable hole.

3. The plastic drainage well pipe according to claim 1, characterized in that: The plastic outer tube and the plastic inner tube are polyethylene tubes.

4. The plastic drainage well pipe according to claim 1, characterized in that: The lower end of the plastic inner tube extends outward to form a supporting flange supported on 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 is formed with a plug connector, the plug connector is plugged into the lower end of the first sleeve, the plug connector forms a communication through hole, and the communication through hole is connected to the plastic inner tubes of two adjacent unit pipe sections.

5. The plastic drainage well pipe according to claim 4, characterized in that: The size of the communication through hole is adapted to the inner diameter of the plastic inner tube, the inner edge of the plug joint extends toward the inner side of the plastic outer tube to form a top flange, the end face of the upper end of the plastic inner tube is located below the end face of the upper end of the plastic outer tube, the end face of the upper end of the plastic inner tube is supported by the top flange, and the top flange is attached to the inner wall of the plastic outer tube.

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