Self-heat-insulating solid wall pipe

Abstract

The invention discloses a self-heat-insulating solid wall pipe. The self-heat-insulating solid wall pipe comprises a solid wall pipe body. The interior of the solid wall pipe body is provided with aninner pipe. The outer side of the inner pipe is provided with an outer pipe. A heat insulating hole is formed between the inner pipe and the outer pipe. A polyvinyl chloride inner pipe is arranged inthe inner pipe. Crack-resistant gridding cloth is arranged in the polyvinyl chloride inner pipe. The outer side of the polyvinyl chloride inner pipe is connected with a polyurethane heat insulating layer in a sleeved mode. A phenolic aldehyde foam heat insulating layer is arranged in the outer pipe. The outer side of the phenolic aldehyde foam heat insulating layer is provided with a polyvinyl chloride outer pipe. The surface of the outer side of the polyvinyl chloride outer pipe is provided with aluminum silicate composite heat insulating coating layer. The polyvinyl chloride inner pipe useshigh-density vinyl chloride as a substrate, and hot melt adhesive and the crack-resistant gridding cloth are used to be tightly combined. The self-heat-insulating solid wall pipe enhances the heat insulating property of a pipeline, enlarges the use range of the pipeline, has high temperature resistance and high-strength cracking resistance, and enhances the abrasion resistance of the pipeline, connecting is reliable, leakage is not prone to happening, carrying can be convenient, and installing is quick.

Description

technical field [0001] The invention relates to a solid-wall pipe, in particular to a self-insulating solid-wall pipe. Background technique [0002] As we all know, solid-wall PVC pipe is a hard plastic pipe that is very common now. It is made of plastics such as polyvinyl chloride (PVC), polyethylene (PE) and polypropylene (PP) through one-time melt extrusion molding. It is mainly used for It is used for water supply and drainage, so it is called a solid-wall pipe, but because the inner wall is smooth, it is easy to produce a loud running sound when pouring water. The core layer of sound-insulating foam PVC drainage pipe is first made of polyvinyl chloride (PVC) plastic to add foam. The foaming agent is melted and extruded, and the foaming agent decomposes rapidly to produce numerous tiny holes in the PVC plastic, and then a layer of molten PVC plastic is coated on the surface of these foamed PVC plastic pipes, so that the pipe is extruded twice. Forming, the inside is a f...

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Problems solved by technology

[0003] Based on the technical conditions of solid-wall pipes in the prior art, there are still many shortcomings in the convenience and usability of solid-wall pipes. In the pipe networks in the fields of urban water supply, drainage and gas, there are many traditional pipes. The disadvantages that are difficult to overcome, there are still disadvantages of poor thermal insulation during use, and at the same time, the quality of pipeline connections is low, easy to leak, inconvenient to transport, and complicated construction, resulting in low work efficiency and short service life. The difference in the transformation of the pipe leads to cracking and damage of the pipe, which affects the normal use, and the scope of use is also limited to a certain extent. Leakage is often prone to occur during the pipe connection process, and there are problems of waste of resources and potential safety hazards.

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