Corrosion-resistant double-wall corrugated pipe

Abstract

The utility model provides a corrosion-resistant double-wall corrugated pipe, and relates to the technical field of corrugated pipes, the corrosion-resistant double-wall corrugated pipe comprises a double-wall corrugated pipe body, the end part of the double-wall corrugated pipe body is provided with a connecting mechanism, the double-wall corrugated pipe body comprises an inner layer, the outer surface of the inner layer is provided with a reinforcing layer, and the outer surface of the inner layer is provided with an outer layer. A first anti-corrosion coating is arranged on the outer surface of the reinforcing layer, an outer layer is arranged on the outer surface of the first anti-corrosion coating, and a second anti-corrosion coating is arranged on the outer surface of the outer layer. According to the double-wall corrugated pipe, the connecting bolts are matched with the first threaded holes and the second threaded holes, the position, in the annular groove, of the first annular connecting part can be fixed, the position, in the adjacent corrugated pipe, of the second annular connecting part can also be fixed, and therefore the adjacent double-wall corrugated pipe bodies can be connected and fixed; the operation is simpler and more convenient, and the workload can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated pipes, in particular to a corrosion-resistant double-wall corrugated pipe. Background Art

[0002] Double-wall corrugated pipe is a new type of pipe with an annular outer wall and a smooth inner wall. It is widely used due to its excellent performance such as strong pressure resistance, low cost, and long service life. For example, the double-wall corrugated pipe proposed in the patent with application number 201710817856.1 includes: an outer wall and an inner wall, the outer wall is cylindrical, and an annular first convex part and a first concave part are alternately formed along the length direction of the outer wall, the inner wall is a straight cylinder, sleeved in the outer wall, connected to the first concave part, and a first cavity is formed between the first convex part, the outer wall is made of HDPE, and the inner wall is made of LDPE. The double-wall corrugated pipe provided by the above scheme has a corrugated outer wall and uses HDPE as the raw material, which ensures the annular rigidity of the outer wall, and the inner layer uses LDPE as the raw material, which reduces the bending rigidity.

[0003] When existing double-wall corrugated pipes need to be connected for use, the connection and fixation between adjacent corrugated pipes still need the help of some equipment, which is not only cumbersome to operate, but also wastes time. Therefore, we have made improvements on this and proposed a corrosion-resistant double-wall corrugated pipe. Utility Model Content

[0004] The main purpose of the utility model is to provide a corrosion-resistant double-wall corrugated pipe, which can effectively solve the problem that when the double-wall corrugated pipes need to be connected for use, the connection and fixation between adjacent corrugated pipes still need the help of some equipment to complete, which is not only cumbersome to operate but also wastes time.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A corrosion-resistant double-wall corrugated pipe comprises a double-wall corrugated pipe body, the end of the double-wall corrugated pipe body is provided with a connecting mechanism, the double-wall corrugated pipe body comprises an inner layer, the outer surface of the inner layer is provided with a reinforcing layer, the outer surface of the reinforcing layer is provided with a first anti-corrosion coating, the outer surface of the first anti-corrosion coating is provided with an outer layer, and the outer surface of the outer layer is provided with a second anti-corrosion coating.

[0007] Preferably, the connecting mechanism includes a first connecting annular tube, a second connecting annular tube and a second annular connecting portion, the first connecting annular tube and the second connecting annular tube are respectively installed at the ends of two adjacent double-wall corrugated pipe bodies, and the second annular connecting portion is installed on the inner wall of the double-wall corrugated pipe body.

[0008] Preferably, an annular groove is provided on one end surface of the first connecting annular tube, and a first annular connecting portion is installed on one end surface of the second connecting annular tube.

[0009] Preferably, the first annular connecting portion is inserted into the annular groove, and a through hole is formed through the surface of the first annular connecting portion.

[0010] Preferably, a mounting hole is provided on the outer surface of the first connecting annular tube, and a first threaded hole is provided through the bottom of the annular groove.

[0011] Preferably, one end of the second annular connecting portion is arranged inside the adjacent double-wall corrugated pipe body, and a second threaded hole is formed on the outer surface of the second annular connecting portion.

[0012] Preferably, a connecting bolt is installed inside the mounting hole, one end of the connecting bolt passes through the through hole and the first threaded hole in sequence, and the end portion is rotatably arranged inside the second threaded hole.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] Through the cooperation between the connecting bolt and the first threaded hole and the second threaded hole, the position of the first annular connecting part inside the annular groove can be fixed, and the position of the second annular connecting part inside the adjacent corrugated pipe can also be fixed, thereby completing the connection and fixation between adjacent double-wall corrugated pipe bodies. The operation is simpler and more convenient, and the workload can be effectively reduced. During the splicing process of the corrugated pipes, one end of the second annular connecting part will be inside the adjacent corrugated pipe, so that the connection between the adjacent corrugated pipes has better sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the double-wall corrugated pipe body of the utility model;

[0017] Figure 3 It is a side view of the utility model;

[0018] Figure 4 For the utility model Figure 3 Schematic diagram of the three-dimensional structure of the cross section at AA in the middle;

[0019] Figure 5 For the utility model Figure 4 Enlarged view of point B in the middle.

[0020] In the figure: 1. double-wall corrugated pipe body; 101. inner layer; 102. reinforcement layer; 103. first anti-corrosion coating; 104. outer layer; 105. second anti-corrosion coating; 2. connecting mechanism; 201. first connecting annular tube; 2011. annular groove; 2012. mounting hole; 2013. first threaded hole; 202. second connecting annular tube; 2021. first annular connecting part; 2022. through hole; 203. second annular connecting part; 2031. second threaded hole; 204. connecting bolt. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1 , Figure 2 As shown, a corrosion-resistant double-wall corrugated pipe includes a double-wall corrugated pipe body 1, a connecting mechanism 2 is arranged at the end of the double-wall corrugated pipe body 1, the double-wall corrugated pipe body 1 includes an inner layer 101, the outer surface of the inner layer 101 is provided with a reinforcing layer 102, the outer surface of the reinforcing layer 102 is provided with a first anti-corrosion coating 103, the outer surface of the first anti-corrosion coating 103 is provided with an outer layer 104, and the outer surface of the outer layer 104 is provided with a second anti-corrosion coating 105.

[0023] like Figure 4 , Figure 5As shown, the connecting mechanism 2 includes a first connecting annular tube 201, a second connecting annular tube 202 and a second annular connecting portion 203. The first connecting annular tube 201 and the second connecting annular tube 202 are respectively installed at the ends of two adjacent double-walled corrugated pipe bodies 1, and the second annular connecting portion 203 is installed on the inner wall of the double-walled corrugated pipe body 1. An annular groove 2011 is provided on one end surface of the first connecting annular tube 201, and a first annular connecting portion 2021 is installed on one end surface of the second connecting annular tube 202. The first annular connecting portion 2021 is inserted into the inner part of the annular groove 2011. The first annular connecting portion 2021 is inserted into the inner part of the annular groove 2011. A through hole 2022 is formed on the surface of the shaped connecting portion 2021, a mounting hole 2012 is formed on the outer surface of the first connecting annular tube 201, a first threaded hole 2013 is formed on the bottom of the annular groove 2011, one end of the second annular connecting portion 203 is arranged inside the adjacent double-wall corrugated pipe body 1, a second threaded hole 2031 is formed on the outer surface of the second annular connecting portion 203, a connecting bolt 204 is installed inside the mounting hole 2012, one end of the connecting bolt 204 passes through the through hole 2022 and the first threaded hole 2013 in sequence, and the end is rotatably arranged inside the second threaded hole 2031.

[0024] By connecting the bolt 204 with the first threaded hole 2013 and the second threaded hole 2031, the positions of the first annular connecting portion 2021 and the second annular connecting portion 203 can be fixed, thereby completing the connection and fixation between adjacent corrugated pipes, making the operation simpler and more convenient to use.

[0025] The working principle of this corrosion-resistant double-wall corrugated pipe:

[0026] By providing the first anti-corrosion coating 103 on the outside of the reinforcing layer 102 and the second anti-corrosion coating 105 on the outside of the outer layer 104, the entire double-wall corrugated pipe body 1 can have good corrosion resistance. When adjacent corrugated pipes are spliced, the first annular connecting portion 2021 at the end of the second connecting annular pipe 202 is inserted into the annular groove 2011 inside the first connecting annular pipe 201, and then the connecting bolt 204 is used to install it to the first threaded hole 2013 and the second threaded hole 2031, so that the position of the first annular connecting portion 2021 inside the annular groove 2011 can be fixed, and the position of the second annular connecting portion 203 inside the adjacent corrugated pipe can also be fixed, thereby completing the connection and fixation between adjacent double-wall corrugated pipe bodies 1, the operation is more convenient, the workload can be effectively reduced, and it is more convenient during use. During the splicing process of the corrugated pipes, one end of the second annular connecting portion 203 will be inside the adjacent corrugated pipe, so that the connection between the adjacent corrugated pipes has better sealing performance.

[0027] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A corrosion-resistant double-wall corrugated pipe, comprising a double-wall corrugated pipe body (1), characterized in that: The end of the double-walled corrugated pipe body (1) is provided with a connection mechanism (2), the double-walled corrugated pipe body (1) comprises an inner layer (101), the outer surface of the inner layer (101) is provided with a reinforcement layer (102), the outer surface of the reinforcement layer (102) is provided with a first anti-corrosion coating (103), the outer surface of the first anti-corrosion coating (103) is provided with an outer layer (104), the outer surface of the outer layer (104) is provided with a second anti-corrosion coating (105), the connection mechanism (2) comprises a first connecting annular tube (201), a second connecting annular tube (202) and a second annular connection portion (203), the first connecting annular tube (201) and the second connecting annular tube (202) are respectively installed at the ends of two adjacent double-walled corrugated pipe bodies (1), the second annular connection portion (203) is provided with ... 3) is installed on the inner wall of the double-wall corrugated pipe body (1), an annular groove (2011) is provided on one end surface of the first connecting annular pipe (201), a mounting hole (2012) is provided on the outer surface of the first connecting annular pipe (201), a first threaded hole (2013) is provided through the bottom of the annular groove (2011), one end of the second annular connecting portion (203) is arranged inside the adjacent double-wall corrugated pipe body (1), a second threaded hole (2031) is provided on the outer surface of the second annular connecting portion (203), a connecting bolt (204) is installed inside the mounting hole (2012), one end of the connecting bolt (204) passes through the through hole (2022) and the first threaded hole (2013) in sequence, and the end is rotatably arranged inside the second threaded hole (2031).

2. A corrosion-resistant double-wall corrugated pipe according to claim 1, characterized in that: A first annular connecting portion (2021) is installed on one end surface of the second connecting annular tube (202).

3. A corrosion-resistant double-wall corrugated pipe according to claim 2, characterized in that: The first annular connecting portion (2021) is inserted into the interior of the annular groove (2011), and a through hole (2022) is provided through the surface of the first annular connecting portion (2021).

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