CN202302361U

CN202302361U - Cement mortar ceramic inner liner composite cast iron pipe

Info

Publication number: CN202302361U
Application number: CN2011204303734U
Authority: CN
Inventors: 杨维国; 杨爽
Original assignee: CAST PIPE BRANCH CHONGZHOU MINJIANG PLASTIC CO LTD
Current assignee: CHONGZHOU MINJIANG PLASTIC CO., LTD.
Priority date: 2011-11-03
Filing date: 2011-11-03
Publication date: 2012-07-04
Anticipated expiration: 2021-11-03

Abstract

The utility model relates to a cement mortar ceramic inner liner composite cast iron pipe, which comprises a cast iron pipe, wherein a cement mortar layer is covered on the inner wall surface of the cast iron pipe, and a non-fired ceramic layer is covered on the cement mortar layer. The cement mortar layer has the following effects that: 1, the pipe inner wall leveling and filling effects are realized; 2, the smooth inner wall surface is convenient to form; 3, the combination of the non-fired ceramic layer is firmer, and the peeling is more difficult; and 4, the full coverage of the non-fired ceramic layer is more favorably formed at the pipe inner wall. The cement mortar ceramic inner liner composite cast iron pipe has the characteristics that the processing cost is low, the wear resistance is realized, the corrosion resistance is high, and the service life is long.

Description

The ceramic-lined compounded cast iron pipe of slush

Technical field

The utility model relates to composite pipe, particularly has the cast iron tubing that pottery closes layer.

Background technique

The Chinese patent document discloses " a kind of nodular cast iron tube with liner of non-calcine ceramic and method for making thereof " (ZL99123753.6); It is ceramic-lined is made up of E-51 epoxy resin, N220 polyethers, silica, P-F modified amine, KH-550 etc.; Under cast iron tube rotation situation; Coating is sprayed its inwall, and the cast iron tube lined ceramics has improved wear resistance and decay resistance.Pottery is to adopt spraying method to be applied directly to the cast iron tube internal face; Because cast iron tube generally adopts the molten iron centrifugal casting forming; The cast iron tube internal face exists a small amount of pore or projection to cause internal face coarse, because baking-free ceramic coating thickness 1-2mm only is difficult to form full coverage; Thereby cause the weak link of corrosion, influence the homogeneous tube life-span.

The model utility content

The purpose of the utility model provides a kind of baking-free ceramic layer forms full coverage to inner tube wall ceramic-lined compounded cast iron pipe of slush that is beneficial to.

This novel purpose is achieved in that a kind of compounded cast iron pipe, comprises cast iron tube, and the cast iron tube internal face is coated with cement mortar layer, is coated with the baking-free ceramic layer on the cement mortar layer.

The thickness of above-mentioned baking-free ceramic layer is 0.4mm～2.0mm.

Above-mentioned cast iron tube is a ductile iron pipe.

Compared with prior art, the utlity model has following characteristics and advantage:

1, covers the baking-free ceramic layer on the cement sand bed again, make the cast iron tube inwall harder, smooth, wear-resisting, increase the working life of water flow and pipeline.

2, ceramic inner layer has the water impermeability, has avoided cement bonded sand pulp-water permeating corrosion inner-walls of duct, has increased pipeline working life.

3, pottery has high-strength corrosion-resistant erosion property, is that slush is incomparable.

4, compare with single pipe lining ceramic layer, it is bigger that this novel pipeline bears pressure: liner slush ceramic ball graphite cast iron pipe is the best selection of current pipeline.

5, cement mortar layer one has been to mend inner tube wall to fill up effect, the 2nd, be convenient to form the smooth inner wall face, the 3rd, with the baking-free ceramic layer combine more firmly, more be difficult for peeling off, the 4th, be beneficial to the baking-free ceramic layer and form full coverage at inner tube wall.

This is novel to have that processing cost is low, wear-resisting, corrosion resistance is higher, the characteristics of long service life.

Description of drawings

Fig. 1 is this novel structural representation.

Embodiment

Fig. 1 illustrates, and cast iron tube 1 internal face is coated with cement mortar layer 2, is coated with baking-free ceramic layer 3 on the cement mortar layer 2.The thickness of baking-free ceramic layer 3 is 0.4mm～2.0mm.

Cast iron tube 1 is a ductile iron pipe.Add man-hour, ductile iron pipe is contained on the centrifuge, after being coated with inner tube wall coating cement mortar, opens centrifuge, makes cement mortar form even coating at inner tube wall, and at last can be floating through external force.To improve flatness; After treating that cement mortar solidifies, with after ceramic powder, silica sand, epoxy resin etc. (or adopting the ZL99123753.6 prescription) blending by a certain percentage, be sprayed on the liner cement sand bed of ductile iron pipe again; Coating 0.4mm～2.0mm is thick, forms unburned epoxy ceramic layer.

Claims

1. the ceramic-lined compounded cast iron pipe of slush comprises that cast iron tube is characterized in that, said cast iron tube (1) internal face is coated with cement mortar layer (2), is coated with baking-free ceramic layer (3) on the cement mortar layer (2).

2. the ceramic-lined compounded cast iron pipe of slush according to claim 1 is characterized in that the thickness of said baking-free ceramic layer (3) is 0.4mm-2.0mm.

3. the ceramic-lined compounded cast iron pipe of slush according to claim 1 and 2 is characterized in that said cast iron tube (1) is a ductile iron pipe.