Wear-resistant corrugated pipe

Abstract

The utility model provides a wear-resistant corrugated pipe, and belongs to the technical field of corrugated pipes. Comprising a corrugated pipe body composed of a plurality of wave trough rings and wave crest rings which are arranged in a staggered mode, a first insertion pipe is arranged at one end of the corrugated pipe body, a second insertion pipe is arranged at the end, away from the first insertion pipe, of the corrugated pipe body, and the first insertion pipe and the second insertion pipe are in matched socket connection; each wear-resistant part comprises an inner ring and an outer ring arranged on the outer side wall of the inner ring, the multiple wear-resistant parts are arranged on the outer side of each wave crest ring, and the whole inner ring and part of the outer ring are arranged to be embedded in the side walls of the wave crest rings. According to the corrugated pipe, the wear-resistant parts are arranged at the protruding positions of the outer side walls of the wave crest rings on the corrugated pipe, the wear-resistant parts protruding out of the outer side of the corrugated pipe make contact with the ground when the corrugated pipe is moved, and direct friction damage between the corrugated pipe body and the ground is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows, in particular to a wear-resistant bellows. Background Art

[0002] Corrugated pipe, a new type of pipe with an annular outer wall, has excellent chemical stability, aging resistance and environmental stress cracking resistance. It is mainly used in water transmission, water supply, drainage, sewage discharge, exhaust, subway ventilation, mine ventilation, farmland irrigation, petrochemical, instrumentation, aerospace, chemical industry, electric power, cement and metallurgy. It mainly includes metal bellows, corrugated expansion joints, corrugated heat exchange tubes, diaphragm boxes and metal hoses.

[0003] At present, corrugated pipes are usually made of plastic using injection molds. During transportation, they will inevitably come into direct contact with the ground. Due to the annular structure of the corrugated pipe, the actual contact area with the ground is small, resulting in relatively large pressure on the contact area, which is prone to wear and leakage.

[0004] Therefore, the present application provides a wear-resistant bellows to meet the demand. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a wear-resistant corrugated pipe to solve the problem that the existing corrugated pipe will inevitably come into direct contact with the ground during transportation, and due to the annular structure characteristics of the corrugated pipe, the actual contact area with the ground is small, resulting in relatively large pressure on the contact area and easy wear and leakage.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A wear-resistant corrugated pipe comprises a bellows body, which is composed of a plurality of staggered trough rings and crest rings. A first insert pipe is provided at one end of the bellows body, and a second insert pipe is provided at the end of the bellows body away from the first insert pipe. The first insert pipe and the second insert pipe are connected in a socket connection; a wear-resistant part comprises an inner ring and an outer ring arranged on the outer side wall of the inner ring. There are a plurality of wear-resistant parts, which are respectively arranged on the outer side of each crest ring. The inner ring as a whole and the outer ring part are arranged to be embedded in the side wall of the crest ring.

[0008] Preferably, the outer diameter of the first cannula is the same as the inner diameter of the second cannula.

[0009] Preferably, the outer ring is arranged at the position where the diameter of the crest ring is the largest, and the outer circle of the outer ring protrudes from the outer side wall of the crest ring.

[0010] Preferably, both side edges of the outer ring protruding from the outer side wall of the crest ring are provided with arc chamfers.

[0011] Preferably, the inner ring is cylindrical and made of aluminum alloy, and the outer ring is annular sheet and made of chromium carbide, and the two are connected and fixed by welding.

[0012] Preferably, the wear-resistant part is provided with a plurality of through grooves distributed in an annular array, the through grooves are located at the connection between the inner ring and the outer ring, and pass through the middle area of ​​the inner ring side wall and the inner side wall of the outer ring.

[0013] Preferably, a plurality of through holes distributed in a ring array are provided on the outer ring side wall, and the through holes penetrate the through hole side wall.

[0014] Preferably, a plurality of through grooves and a plurality of through holes are distributed alternately with each other.

[0015] Compared with the prior art, the utility model has at least the following beneficial effects:

[0016] In the above scheme, a wear-resistant part is provided on the outer wall protruding from the crest ring of the bellows. When the bellows is moved, the wear-resistant part protruding from the outer side of the bellows contacts the ground, thereby avoiding direct friction damage between the bellows body and the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0018] Figure 1 This is a schematic diagram of the overall structure of the bellows of the utility model;

[0019] Figure 2 It is a schematic diagram of the cross section of the side wall of the corrugated pipe of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the wear-resistant part of the utility model.

[0021] In the figure: 1, bellows body; 11, trough ring; 12, crest ring; 2, first insert pipe; 3, second insert pipe; 4, wear-resistant part; 41, inner ring; 42, outer ring; 43, through groove; 44, through hole.

[0022] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0023] The following is a detailed description of a wear-resistant bellows provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some known technologies, those skilled in the art may also adopt other alternative methods to implement them; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0024] like Figure 1 - Figure 3 As shown, an embodiment of the utility model provides a wear-resistant bellows, including a bellows body 1, which is composed of a plurality of staggered trough rings 11 and crest rings 12, and is manufactured by an injection mold. A first insert tube 2 is provided at one end of the bellows body 1, and a second insert tube 3 is provided at the end of the bellows body 1 away from the first insert tube 2, and the first insert tube 2 and the second insert tube 3 are matched with a socket connection; a wear-resistant part 4, including an inner ring 41, and an outer ring 42 arranged on the outer side wall of the inner ring 41, and a plurality of the wear-resistant parts 4 are provided, which are respectively arranged on the outside of each of the crest rings 12, and the inner ring 41 as a whole and the outer ring 42 part are arranged to be embedded in the side wall of the crest ring 12.

[0025] By arranging the wear-resistant part 4 at the protruding position of the outer wall of the crest ring 12 on the bellows, the wear-resistant part 4 protruding from the outside of the bellows contacts the ground when the bellows is moved, thereby avoiding direct friction damage between the bellows body 1 and the ground.

[0026] The outer diameter of the first cannula 2 is the same as the inner diameter of the second cannula 3 , and the outer wall of the first cannula 2 and the inner wall of the second cannula 3 are both smooth curved surfaces.

[0027] When connecting two corrugated pipes, the first insert pipe 2 on one of the corrugated pipes is inserted as a whole into the second insert pipe 3 on the other corrugated pipe to complete the connection between the two. Furthermore, glue is applied to the connection position between the two to improve the firmness of the connection between the two.

[0028] like Figure 2 and Figure 3 As shown, the outer ring 42 is arranged at the position with the largest diameter of the crest ring 12, and the outer circle of the outer ring 42 protrudes from the outer wall of the crest ring 12; both side edges of the outer ring 42 protruding from the outer wall of the crest ring 12 are provided with arc chamfers.

[0029] This arrangement can prevent the sharp outer edge of the outer ring 42 protruding from the bellows from causing scratches to workers during manual handling.

[0030] The inner ring 41 is cylindrical and made of aluminum alloy, which is beneficial to reducing the overall mass of the bellows and has low cost. The outer ring 42 is annular and made of chromium carbide, has good wear resistance, and effectively increases the service life of the bellows. The two are fixed by welding.

[0031] like Figure 3 As shown, the wear-resistant part 4 is provided with a plurality of through grooves 43 distributed in a circular array, the through grooves 43 are located at the connection between the inner ring 41 and the outer ring 42, and pass through the middle area of ​​the side wall of the inner ring 41 and the inner side wall of the outer ring 42; the side wall of the outer ring 42 is provided with a plurality of through holes 44 distributed in a circular array, and the through holes 44 pass through the side wall of the through holes 44.

[0032] By providing the through groove 43 and the through hole 44 , when the corrugated pipe is manufactured by injection molding, the material extruded by injection molding can pass through both sides of the through groove 43 and the through hole 44 , thereby playing a role in fixing the wear-resistant part 4 .

[0033] like Figure 3 As shown, the plurality of through grooves 43 and the plurality of through holes 44 are staggered with each other to ensure that during injection molding, the areas through which the materials at both ends of the wear-resistant part 4 pass and play a connecting role are evenly distributed, further improving the strength of the connecting structure of the wear-resistant part 4 on the corrugated pipe.

[0034] The technical solution provided by the utility model, in actual use, since the outermost end of the wear-resistant part 4 protrudes from the side wall position of the maximum diameter of the corrugated pipe body 1, when the corrugated pipe is transported, the corrugated pipe body 1 will not have direct friction with the ground, but the outer rings 42 on the multiple wear-resistant parts 4 will rub against the ground, thereby avoiding direct friction damage between the corrugated pipe body 1 and the ground.

[0035] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A wear-resistant corrugated pipe, characterized in that: include: The bellows body (1) is composed of a plurality of wave valley rings (11) and wave crest rings (12) arranged in an alternating manner. A first insert pipe (2) is provided at one end of the bellows body (1), and a second insert pipe (3) is provided at one end of the bellows body (1) away from the first insert pipe (2). The first insert pipe (2) and the second insert pipe (3) are connected in a socket-and-spigot manner. The wear-resistant part (4) comprises an inner ring (41) and an outer ring (42) arranged on the outer side wall of the inner ring (41). The wear-resistant parts (4) are provided in plurality and are arranged on the outer side of each of the crest rings (12). The entire inner ring (41) and a part of the outer ring (42) are arranged to be embedded in the side wall of the crest ring (12).

2. The wear-resistant corrugated pipe according to claim 1, characterized in that: The outer diameter of the first cannula (2) is the same as the inner diameter of the second cannula (3).

3. The wear-resistant corrugated pipe according to claim 1, characterized in that: The outer ring (42) is arranged at the position where the diameter of the crest ring (12) is the largest, and the outer circle of the outer ring (42) protrudes from the outer side wall of the crest ring (12).

4. The wear-resistant corrugated pipe according to claim 1, characterized in that: The edges of both sides of the outer ring (42) protruding from the outer side wall of the crest ring (12) are provided with arc chamfers.

5. The wear-resistant corrugated pipe according to claim 1, characterized in that: The inner ring (41) is cylindrical and made of aluminum alloy, and the outer ring (42) is annular and made of chromium carbide. The two are connected and fixed by welding.

6. The wear-resistant corrugated pipe according to claim 1, characterized in that: The wear-resistant part (4) is provided with a plurality of through grooves (43) distributed in an annular array. The through grooves (43) are located at the connection between the inner ring (41) and the outer ring (42) and penetrate the middle area of ​​the side wall of the inner ring (41) and the inner side wall of the outer ring (42).

7. The wear-resistant corrugated pipe according to claim 6, characterized in that: A plurality of through holes (44) distributed in a ring array are provided on the side wall of the outer ring (42), and the through holes (44) penetrate the side wall of the through hole (44).

8. The wear-resistant corrugated pipe according to claim 7, characterized in that: The plurality of through grooves (43) and the plurality of through holes (44) are distributed alternately with each other.

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