Polyurethane foaming process for thermal insulation pipe connector

Abstract

The invention relates to a foaming process, in particular to a polyurethane foaming process for a thermal insulation pipe connector. The polyurethane foaming process for the thermal insulation pipe connector includes the following steps of (1) selecting, specifically, an adaptive packaging bag containing polyurethane foaming materials is selected according to the size of the thermal insulation pipe connector, the packaging bag comprises a double-layer structural body with a sealed edge, the body is divided into two sub-bags which can communicate with each other, and the two sub-bags contain the material A and the material B for polyurethane foaming correspondingly; (b) stirring, specifically, a partition between the two sub-bags is removed so as to make the two sub-bags communicate with each other, a stirring device in the packaging bag is used for stirring, and the material A and the material B in the sub-bags are sufficiently mixed; and (c) discharging, specifically, the packaging bag is opened, and the sufficiently mixed materials A and B are injected into the thermal insulation pipe connector. Sufficient mixing can be achieved in the polyurethane foaming process for the thermal insulation pipe connector.

Description

technical field [0001] The invention relates to a foaming process, in particular to a polyurethane foaming process for an insulation pipe interface. Background technique [0002] In the insulation pipe, polyurethane is usually used as the insulation layer. The pipe part can usually be transported to the construction site after prefabricated foam molding in the factory, but the joint between the pipe and the pipe often needs to be foamed on site. [0003] In the prior art, vehicle-mounted polyurethane foaming equipment is usually used for on-site construction. However, due to the space and geographical location of the pipe network implementation site, sometimes the foaming vehicle cannot approach the construction site. At this time, manual foaming can only be used. . At present, the manual foaming process commonly used in China is complicated, has high requirements for operators and is difficult to ensure standardization. [0004] Chinese patent document CN2892694Y disclose...

AI Technical Summary

Problems solved by technology

[0006] For this reason, the technical problem to be solved by the present invention is that in the prior art, the foaming process used for the joint of the heat preservation pipe using the polyurethane foam material with the packaging bag is not sufficiently mixed, and then a fully mixed heat preservation pipe joint is provided. Polyurethane foaming process

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