CN202580363U

CN202580363U - Helical bellows formed by closed type rugged-surface framework

Info

Publication number: CN202580363U
Application number: CN 201220006241
Authority: CN
Inventors: 万天鸿; 施经东; 谈刚强
Original assignee: ZHEJIANG SHUANGLIN ELECTROMECHANICAL TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG LONGZE PIPELINE CO., LTD.
Priority date: 2012-01-09
Filing date: 2012-01-09
Publication date: 2012-12-05
Anticipated expiration: 2022-01-09

Abstract

The utility model relates to a helical bellows formed by a closed type rugged-surface framework. The helical bellows formed by the closed type rugged-surface framework is capable of not only effectively improving the strength of a large-aperture bellows, but also fundamentally improving the elasticity of the large-aperture bellows, and comprises an inner pipe and a D-shaped metal pipe, wherein the D-shaped metal pipe winds a pipe body of the inner pipe, the section of the D-shaped metal pipe is in a D-shaped pipe structure, a semicircular surface of the D-shaped metal pipe is a rugged surface, and the surface of the D-shaped metal pipe is covered by a plastic layer. The helical bellows formed by the closed type rugged-surface framework has the advantages that the D-shaped metal pipe is like an arc bridge structure, so that the bearing capacity is big; the bottom surface of the D-shaped metal pipe contacts the surface of the inner pipe, so that the supporting strength and bearing capacity of the inner pipe are greatly improved; the semicircular surface of the D-shaped metal pipe is the rugged surface, when the plastic layer is melt and compound, the plastic layer is compound with the rugged surface of the surface of the D-shaped metal pipe, the bonding strength is good, formed rugged positioning rammers enable the plastic layer and the surface of the D-shaped metal pipe to be tightly combined into a whole, and the phenomenon of stratification does not occur in the use process of the bellows.

Description

A kind of helical bellows that is configured to by closed uneven facial bone

Technical field

The utility model relates to a kind ofly can not only improve heavy caliber bellows intensity effectively; And the elasticity that can make the heavy caliber bellows obtains a kind of helical bellows and making method that is configured to by closed uneven facial bone that essence improves, genus bellows manufacturing field.

Background technique

CN201078525Y, title " socket joint electric smelting jointing type steel band reinforced polyethylene spiral ripple pipe ", it is used to solve the problem of easy seepage of steel band reinforced polyethylene spiral ripple pipe connection interface and poor reliability.Socket joint electric smelting jointing type steel band reinforced polyethylene spiral ripple pipe; Be the metal frame that twines to be fixed on the inner layer polyethylene with outer layer polyethylene; Particularly an end of bellows is provided with socket, and the other end of bellows is provided with bellmouth, imbeds a circle electric heating element on the bellmouth inwall and forms.Adopt this socket joint electric smelting jointing type steel band reinforced polyethylene spiral ripple pipe, can be widely used in the connection construction of plastic tube.Its deficiency: the one, metal frame is the outer structure of taking off, and what form with inner layer polyethylene is that the line face contact, rather than face contacts; Not only plyability is poor; And under the effect of external force, metal frame is prone to take off mobile outward, causes inner layer polyethylene is destroyed; The quality of direct shadow pipe matter, even cause inner layer polyethylene damaged; The 2nd, support strength is low, because metal frame is the outer structure of taking off, outwards move its metal frame both sides of external pressure, not only causes the layering of metal frame and inner layer polyethylene, and cause the direct reduction of inner layer polyethylene intensity; The 3rd, because outer layer polyethylene and metal frame are two kinds of material different, had nothing in common with each other by its coefficient that expands with heat and contract with cold of Influence of Temperature, therefore stratification in use takes place inevitably, cause bellows intensity sharply to descend, bellows caves in.

The model utility content

Purpose of design: avoid the deficiency in the background technique; Design and a kind ofly can not only improve heavy caliber bellows intensity effectively, and can make the elasticity of heavy caliber bellows obtain a kind of helical bellows and making method that is configured to by closed uneven facial bone that essence improves.

Design proposal: in order to realize above-mentioned purpose of design.For uneven design, be the major technique characteristic of the utility model on the semicircle face of D shape metal tube in being wrapped on the pipe pipe shaft.The purpose of doing like this is: uneven the stiffening rib point just as being provided with at D shape metal tube face; This stiffening rib point not only can improve the intensity of D shape metal tube skeleton effectively; And can play the effect of mutual traction to being compounded in plastic layer on its face, force stability bonding between plastic layer and metal covering.

Technological scheme: a kind of helical bellows that is configured to by closed uneven facial bone; It comprises interior pipe; The D shape metal tube cross section of pipe on the pipe shaft is on the semicircle face of D shape tubular structure and D shape metal tube and is uneven in being wrapped in, and the pipe face of D shape metal tube is covered with plastic layer.

The utility model is compared with background technique, and the one, D shape metal tube is just as the arch bridge structure, and bearing capacity is big; The 2nd, because D shape metal tube bottom surface contacts with the inner tube surface face, greatly improved interior pipe support strength and bearing capacity; The 3rd, because D shape metal tube face is uneven; When plastic layer fusion compound tense; Compound with on the D shape metal tube face uneven; Its bonding strength is good, and upsetting and can plastic layer and D shape metal tube face firmly be connected as a single entity in the concavo-convex location that forms, has guaranteed that bellows in use stratification can not take place.

Description of drawings

Fig. 1 is the structural representation of the helical bellows that is configured to by closed uneven facial bone.

Fig. 2 is the cross section structure schematic representation of D shape metal tube among Fig. 1.

Embodiment

Embodiment 1: with reference to accompanying drawing 1-2.A kind of helical bellows that is configured to by closed uneven facial bone; Pipe 1 in it comprises; D shape metal tube 2 cross sections of pipe on 1 pipe shaft are on the semicircle face of D shape tubular structure and D shape metal tube 2 and are uneven in being wrapped in, and the pipe face of D shape metal tube 2 is covered with plastic layer 3.Said D shape metal tube 2 adopts steel band to make.

What need understand is: the detailed text description though above-mentioned mentality of designing to the utility model is contrasted; But these text descriptions; Just the simple text of the utility model mentality of designing is described, rather than to the restriction of the utility model mentality of designing, any combination that does not exceed the utility model mentality of designing; Increase and modification, all fall in the protection domain of the utility model.

Claims

1. helical bellows that is configured to by closed uneven facial bone; It comprises interior pipe (1); It is characterized in that: be wrapped in D shape metal tube (2) cross section on interior pipe (1) pipe shaft and be on the semicircle face of D shape tubular structure and D shape metal tube (2) and be uneven, the pipe face of D shape metal tube (2) is covered with plastic layer (3).