Spiral flexible corrugated pipe

Abstract

The utility model provides a spiral flexible corrugated pipe, and relates to the technical field of flexible corrugated pipes. Fixing flanges are fixedly installed at the opening portions of the two ends of the polyethylene outer layer respectively, and through bolt holes are evenly formed in the fixing flanges. The length of the corrugated pipe is adjusted by grasping the fixing flanges at the two ends and stretching the fixing flanges, or the length of the corrugated pipe is reduced by oppositely pressing the two fixing flanges, and the length of the corrugated pipe is adjusted according to the distance between the pipelines at the two ends, so that the two fixing flanges are conveniently connected with the pipelines at the two ends, and meanwhile limiting nuts are attached to the side walls of the fixing lug plates; the two fixed flanges can be limited to move by adjusting the distance between the two fixed flanges, meanwhile, the length of the corrugated pipe is limited, and the problems that pipelines at the two ends need to be connected in a butt joint mode after being laid, the distance between the pipelines at the two ends is different every time, and therefore the length needs to be adjusted through the corrugated pipe, and otherwise the pipelines at the two ends cannot be communicated through the corrugated pipe are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible corrugated pipes, and particularly relates to a spiral flexible corrugated pipe. Background Art

[0002] At present, the spiral flexible corrugated pipes on the market are mainly divided into two materials: metal and non-metal. The metal spiral flexible corrugated pipes are usually made of metal materials such as stainless steel, copper, and aluminum, and have high pressure resistance and abrasion resistance, and are suitable for high-temperature and high-pressure environments. However, the metal spiral flexible corrugated pipes have the disadvantages of heavy weight, high cost, and easy rusting, which limit their application scope in some occasions. The non-metal spiral flexible corrugated pipes are mainly made of materials such as rubber and plastic, and have the advantages of light weight, corrosion resistance, and abrasion resistance, and are suitable for the transportation of some special media. However, the non-metal spiral flexible corrugated pipes have certain limitations in pressure resistance and high-temperature resistance, and cannot meet the requirements under some special working conditions.

[0003] During the use of the flexible corrugated pipe, since the two ends of the pipeline have been laid and need to be docked, and the distance length between the two ends of the pipeline is different each time, it is necessary to use the corrugated pipe to adjust the length, otherwise the corrugated pipe cannot connect the two ends of the pipeline. Summary of the Utility Model

[0004] In view of this, the utility model provides a spiral flexible corrugated pipe, which grasps the fixed flanges at both ends to stretch and adjust the length of the corrugated pipe, or presses the two fixed flanges towards each other to contract the length of the corrugated pipe, and adjusts the length of the corrugated pipe according to the distance between the two ends of the pipeline, which is convenient for the two fixed flanges to connect the pipelines at both ends. At the same time, when the limit nut is attached to the side wall of the fixed ear plate, the movement of the two fixed flanges can be restricted, and the length of the corrugated pipe is also restricted.

[0005] To achieve the above object, the utility model provides the following technical solutions: The purpose and effect of a spiral flexible corrugated pipe of the utility model are achieved by the following specific technical means:

[0006] The utility model provides a spiral flexible corrugated pipe, which specifically includes: a polyethylene outer layer; fixed flanges are respectively fixedly installed at the mouth parts at both ends of the polyethylene outer layer, and through bolt holes are evenly arranged on the fixed flanges; fixed ear plates are respectively fixedly installed at both ends of the two fixed flanges, and through round holes are arranged on the fixed ear plates;

[0007] Through holes of the two groups of fixed ear plates are respectively inserted with through threaded rods, and stop heads are respectively fixedly installed at two ends of the threaded rods; a filling layer is arranged in the inner cavity of the polyethylene outer layer, a polyethylene inner layer is fixedly installed in the inner cavity of the filling layer, rubber sealing rings are fixedly bonded at two ends of the polyethylene inner layer respectively, a polyethylene smooth pipe is fixedly installed in the inner cavity of the polyethylene inner layer, and smooth grooves are evenly formed in the inner cavity of the polyethylene smooth pipe.

[0008] Preferably, steel strip rings are evenly fixedly installed on the side wall of the outer end of the polyethylene outer layer, and symmetric connecting grooves are formed on the inner side wall of the steel strip rings.

[0009] Preferably, through connection holes are evenly formed at two ends of the polyethylene outer layer, and through fasteners are respectively inserted at each connection hole.

[0010] Preferably, sealing grooves are respectively formed at two ends of the inner side wall of the polyethylene outer layer, and the sealing grooves are formed in a circular structure.

[0011] Preferably, two limit nuts are respectively rotatably installed at two ends of the two threaded rods, and the side wall of the limit nut is attached to the side wall of the fixed ear plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. In this application, by grasping the fixed flanges at both ends to stretch and adjust the length of the corrugated pipe, or pressing the two fixed flanges towards each other to contract the length of the corrugated pipe, the length of the corrugated pipe is adjusted according to the distance between the pipes at both ends, which is convenient for the two fixed flanges to connect the pipes at both ends. At the same time, since the side wall of the limit nut is attached to the side wall of the fixed ear plate, the movement of the two fixed flanges can be restricted, and the length of the corrugated pipe is also restricted.

[0014] 2. In this application, when the pipes at both ends need to be butted, two fixed flanges are used to butt against the flanges at the mouth parts of the pipes at both ends, so that the pipes at both ends are connected. The corrugated pipe has good flexibility and bendability, can adapt to complex installation environments and different terrain conditions, and the installation of the corrugated pipe is usually relatively simple, and can be quickly butted and connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings of the embodiments will be briefly introduced below.

[0016] The accompanying drawings in the following description only relate to some embodiments of the present utility model, and do not limit the present utility model.

[0017] In the accompanying drawings:

[0018] Figure 1Shows a schematic diagram of the left front upper axonometric structure of the present application;

[0019] Figure 2 Shows a schematic diagram of a semi-sectional structure of the polyethylene outer layer part of the present application;

[0020] Figure 3 Shows a schematic diagram of the structure of the filling layer part of the present application;

[0021] Figure 4 Shows a schematic diagram of the explosion structure of the present application.

[0022] List of reference numerals

[0023] 1. Polyethylene outer layer; 101. Steel strip ring; 102. Connection groove; 103. Connection hole; 104. Sealing groove; 105. Fastener;

[0024] 2. Fixed flange; 201. Bolt hole; 202. Fixed ear plate; 203. Threaded rod; 204. Limit nut;

[0025] 3. Filling layer; 301. Polyethylene inner layer; 302. Rubber sealing ring; 303. Polyethylene smooth tube. Detailed implementation manners

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. The following describes each embodiment of the present invention in detail with reference to the drawings.

[0027] Embodiment 1:

[0028] Please refer to Figures 1 to 4 :

[0029] The utility model provides a spiral flexible corrugated pipe, comprising: a polyethylene outer layer 1; the polyethylene outer layer 1 can effectively resist the erosion of chemical substances, acids and alkalis in the external environment, ensure the long-term use and stability of the pipeline, and can withstand a certain external pressure and impact. Fixed flanges 2 are respectively fixedly installed at the mouth parts at both ends of the polyethylene outer layer 1, and through bolt holes 201 are evenly formed in the fixed flanges 2; when the pipelines at both ends need to be butted, two fixed flanges 2 are used to butt against the flanges at the mouth parts of the pipelines at both ends, and then bolts are used to penetrate through the bolt holes 201 and the round holes on the pipeline flanges to fixedly connect the pipelines at both ends together, so that the pipelines at both ends are communicated. Fixed ear plates 202 are respectively fixedly installed at both ends of the two fixed flanges 2, and through round holes are formed in the fixed ear plates 202; through threaded rods 203 are respectively inserted into the round holes of the two groups of fixed ear plates 202, and stoppers are respectively fixedly installed at both ends of the threaded rods 203; two limit nuts 204 are respectively rotatably installed at both ends of the two threaded rods 203, and the side walls of the limit nuts 204 are attached to the side walls of the fixed ear plates 202. The limit nuts 204 are rotated to move left or right, so that the limit nuts 204 are far away from the fixed ear plates 202. At this time, the two fixed flanges 2 at both ends are grasped to stretch or press the fixed flanges 2 towards each other to contract, and the positions of the polyethylene outer layer 1 and the two fixed flanges 2 are adjusted to facilitate the connection of the pipelines at both ends by the two fixed flanges 2. Then, the limit nuts 204 are rotated to be attached to the side walls of the fixed ear plates 202. In this way, when the two fixed flanges 2 at both ends are grasped and moved away from each other, they cannot move away from each other due to the blocking of the two limit nuts 204 at both ends, so as to limit the two fixed flanges 2 at both ends. A filling layer 3 is arranged in the inner cavity of the polyethylene outer layer 1.

[0030] Furthermore, steel strip rings 101 are evenly fixedly installed on the outer side wall of the polyethylene outer layer 1. The steel strip rings 101 can improve the mechanical strength of the corrugated pipe, so that it is not easy to deform or break in a high-pressure or high-temperature environment. Symmetric connection grooves 102 are formed in the inner side wall of the steel strip rings 101. Through connection holes 103 are evenly formed at both ends of the polyethylene outer layer 1, and through fasteners 105 are respectively inserted into each connection hole 103. The fasteners 105 are fixedly inserted into the connection grooves 102 of the steel strip rings 101 through the connection holes 103 to fixedly connect the polyethylene outer layer 1 and the steel strip rings 101 together. Sealing grooves 104 are respectively formed at both ends of the inner side wall of the polyethylene outer layer 1, and the sealing grooves 104 are formed in a circular structure.

[0031] Furthermore, a polyethylene inner layer 301 is fixedly installed in the inner cavity of the filling layer 3. The material of the polyethylene inner layer 301 has excellent corrosion resistance and can resist the erosion of various chemical substances. It is suitable for transporting corrosive media such as acids and alkalis. Both ends of the polyethylene inner layer 301 are fixedly glued with rubber sealing rings 302. The rubber sealing rings 302 are inserted into the sealing grooves 104, so that foreign matters from the outside cannot enter the corrugated pipe. A polyethylene smooth pipe 303 is fixedly installed in the inner cavity of the polyethylene inner layer 301. Smooth grooves are evenly formed in the inner cavity of the polyethylene smooth pipe 303. The inner surface of the polyethylene smooth pipe 303 is smooth and provided with smooth grooves, which can prevent large wrinkles from being generated when this section of the corrugated pipe contracts. The formation of the smooth grooves reduces the frictional resistance of the fluid in the pipeline and improves the conveying efficiency of the fluid.

[0032] Embodiment 2:

[0033] On the basis of Embodiment 1, symmetric connecting grooves 102 are formed on the inner side wall of the steel belt ring 101. Through holes 103 are evenly formed at both ends of the polyethylene outer layer 1. A through fastener 105 is inserted at each through hole 103. The fastener 105 is inserted through the through hole 103 and fixedly inserted into the connecting groove 102 of the steel belt ring 101, so as to fixedly connect the polyethylene outer layer 1 and the steel belt ring 101 together. At the same time, the inner side wall of the steel belt ring 101 and the outer end side wall of the polyethylene outer layer 1 are adhesively fixed, so that the steel belt ring 101 and the polyethylene outer layer 1 are more firmly connected together, which is convenient for the bending or telescoping of the corrugated pipe.

[0034] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. Among them, there are various detachable installation methods. For example, it can be through the cooperation of plugging and buckling, or through the method of bolt connection, etc.

[0035] The above combines the embodiments and the drawings to clearly and completely describe the concept, specific structure and generated technical effects of the present utility model, so as to fully understand the purpose, features and effects of the present utility model.

[0036] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model. In addition, all the connection / linkage relationships mentioned in the text do not simply refer to the direct connection of components, but rather refer to the formation of a more optimal connection structure by adding or reducing connection accessories according to specific implementation situations.

[0037] The above embodiments' specific description of the present utility model is only used to further illustrate the present utility model and cannot be understood as a limitation on the protection scope of the present utility model. Any non-essential improvements and adjustments made by technical engineers in the art based on the content of the above utility model all fall within the protection scope of the present utility model.

Claims

1. A spiral flexible corrugated pipe, characterized in that, Comprising: A polyethylene outer layer (1); fixed flanges (2) are respectively fixedly installed at the mouth parts at both ends of the polyethylene outer layer (1), and through bolt holes (201) are evenly formed in the fixed flanges (2); fixed ear plates (202) are respectively fixedly installed at both ends of the two fixed flanges (2), and through round holes are formed in the fixed ear plates (202); through threaded rods (203) are respectively inserted into the round holes of the two groups of fixed ear plates (202), and stoppers are respectively fixedly installed at both ends of the threaded rods (203); a filling layer (3) is arranged in the inner cavity of the polyethylene outer layer (1).

2. The spiral flexible corrugated pipe according to claim 1, characterized in that: Steel strip rings (101) are evenly fixedly installed on the side wall of the outer end of the polyethylene outer layer (1), and symmetric connecting grooves (102) are formed in the inner side wall of the steel strip rings (101).

3. The spiral flexible corrugated pipe according to claim 1, characterized in that: Through connection holes (103) are evenly formed at both ends of the polyethylene outer layer (1), and through fasteners (105) are respectively inserted into each connection hole (103).

4. The spiral flexible corrugated pipe according to claim 1, characterized in that: Sealing grooves (104) are respectively formed at both ends of the inner side wall of the polyethylene outer layer (1), and the sealing grooves (104) are formed in a circular shape structure.

5. The spiral flexible corrugated pipe according to claim 1, characterized in that: Two limit nuts (204) are respectively rotatably installed at both ends of the two threaded rods (203), and the side walls of the limit nuts (204) are in contact with the side walls of the fixed ear plates (202).

6. The spiral flexible corrugated pipe according to claim 1, characterized in that: A polyethylene inner layer (301) is fixedly installed in the inner cavity of the filling layer (3), and rubber sealing rings (302) are respectively fixedly bonded at both ends of the polyethylene inner layer (301).

7. The spiral flexible corrugated pipe according to claim 6, wherein: A polyethylene smooth tube (303) is fixedly installed in the inner cavity of the polyethylene inner layer (301), and smooth grooves are evenly formed in the inner cavity of the polyethylene smooth tube (303).

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