CN202493798U - Hollow concave-convex corrugated pipe - Google Patents

Abstract

The utility model relates to a hollow concave-convex corrugated pipe. Not only can the strength of the large-diameter corrugated pipe be effectively increased, but also the weight of the large-diameter corrugated pipe can be lightened, and the material of the large-diameter corrugated pipe can be reduced. The wall surface of a hollow pipe core is a concave-convex structure, composite plastic layers are arranged on the inner and outer walls of the hollow pipe core, the hollow pipe core with the composite plastic layers is spirally superposed to form the corrugated pipe, and fused sealing connection between spiral pipe walls of the corrugated pipe is formed. The hollow concave-convex corrugated pipe has the advantages that a precedent of a single-walled concave-convex corrugated pipe is created; the strength of the large-diameter corrugated pipe is increased, the weight of the large-diameter corrugated pipe is lightened, and the material consumption of the large-diameter corrugated is reduced; and the surface of a metal pipe core or non-metal pipe core is concave-convex surface, the adhesion strength is good when the fused plastic layer is compounded with the concave-convex uneven surface on the metal pipe core or non-metal pipe core surface, the plastic layer and the metal pipe core or non-metal pipe core surface can be firmly connected together through the formed concave-convex positioning blocks, and the corrugated pipe is ensured not to be layered during use.

Description

The concavo-convex bellows of a kind of hollow

Technical field

The utility model relates to a kind ofly can improve heavy caliber bellows intensity effectively, can alleviate heavy caliber bellows weight again, can reduce the concavo-convex bellows of a kind of hollow of heavy caliber bellows material simultaneously again, belongs to bellows and makes the field.

Background technique

CN201731192U, title " large-caliber double-wall ripple water pipe ", its tube wall constitutes by the inside and outside is two-layer, and its inner tubal wall is smooth, and outer tube wall is trapezoidal corrugated, is provided with stirrup in the cavity between the inside and outside wall, and connects as one at outer wall trapezoidal bottom groove and inwall.Be provided with stirrup in the cavity between this large-caliber double-wall ripple water pipe inside and outside wall; Improved the intensity of water pipe; Compare with the large-diameter steel-plastic waste pipe that generally uses in the existing technology and to have that overall weight is light, cost is low, easy to install and characteristics that cost of production is low.Its deficiency: because the tube wall of bellows is made up of inner and outer wall, the compressive strength of its inwall strengthens through outer wall, and not only weight is big, and raw materials consumption is big, and compressive strength is uneven.

The model utility content

Purpose of design: avoid the deficiency in the background technique, design and a kind ofly can improve heavy caliber bellows intensity effectively, can alleviate heavy caliber bellows weight again, can reduce the concavo-convex bellows of a kind of hollow of heavy caliber bellows material simultaneously again.

Design proposal: in order to realize above-mentioned purpose of design.1, bellows is one of technical characteristics of the utility model the design that the plastic tube spiral that has the hollow tube core is formed by stacking.The purpose of doing like this is: it divides body structure with existing double-wall corrugated water pipe by bilayer; Change overall structure into, both escaped to eliminate the inwall in the background technique, integrated the outer wall in the background technique again; Make the ripple tube wall after the integration both have the function of inwall, have the function of outer wall again.Therefore, not only bearing strength is high, low cost of manufacture, and in light weight, greatly reduced raw-material consumption.2, metal die or nonmetal tube core face are the design of male and fomale(M&F), be the utility model technical characteristics two.The purpose of doing like this is: uneven just as the stiffening rib point in metal die or the setting of nonmetal tube core; This stiffening rib point not only can improve the intensity of metal die or nonmetal tube core 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: the concavo-convex bellows of a kind of hollow, hollow tube core wall concave-convex surface structure, composite plastic layer and the hollow tube core spiral that has a composite plastic layer are superimposed as bellows on the hollow tube in-core outer wall, constitute melting sealed connection between the volute wall of bellows.

The utility model is compared with background technique, and the one, started the precedent of the concavo-convex bellows of single wall hollow; The 2nd, both improved the intensity of heavy caliber bellows, alleviate heavy caliber bellows weight again, reduce the consumption of heavy caliber bellows material simultaneously again; The 3rd, metal die or nonmetal tube core face are male and fomale(M&F); Uneven compound tense on molten plastic layer and metal die or nonmetal tube core face; Its bonding strength is good; Form concavo-convex location and upset and can plastic layer and metal die or nonmetal tube core face firmly be connected as a single entity, guaranteed that bellows in use stratification can not take place.

Description of drawings

Fig. 1 is the concavo-convex bellows structure schematic representation of hollow.

Fig. 2 is the sectional structure schematic representation of the concavo-convex bellows of hollow.

Embodiment

Embodiment 1: with reference to accompanying drawing 1.The concavo-convex bellows of a kind of hollow, hollow tube core 2 wall concave-convex surface structures 4, composite plastic layer 3 and hollow tube core 2 spirals that have a composite plastic layer 3 are superimposed as bellows 1 on hollow tube core 2 inside and outside walls, constitute melting sealed connection between the volute wall of bellows 1.Said hollow tube core 2 is metal die or nonmetal tube core, and its making method is an existing technology, is not described herein at this.Its making method: the heavy caliber polyolefin that hollow tube core 2 is made through the claimant twines and increases the directly distortion on bellow forming and the effect of two corrugated surfaces at bellow forming under in composite plastic layer 3 backs of pipe production line, overlaps, forms bellows 1 internal face, and has the concavo-convex bellows outer wall of adhere formation hollow between the plastic tube wall of hollow tube core 2.Said hollow tube core 2 wall concave-convex surface structures 4.

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 (2)

1. concavo-convex bellows of hollow; It is characterized in that: hollow tube core wall concave-convex surface structure; Composite plastic layer and the hollow tube core spiral that has a composite plastic layer are superimposed as bellows on the hollow tube in-core outer wall, constitute melting sealed connection between the volute wall of bellows.

2. the concavo-convex bellows of hollow according to claim 1 is characterized in that: said hollow tube core is metal die or nonmetal tube core.

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