A polyurethane insulation board foaming system

Abstract

The invention belongs to the technical field of polyurethane production equipment, and particularly relates to a polyurethane heat preservation board foaming system. The system comprises a stirring unit, a water control unit and a foaming unit; the stirring unit comprises a stirring bin, a heating cylinder, four stirring plates, a rotating rod and a motor; the stirring bin is cylindrical, a firstopening is formed in the left side of the upper surface of the stirring bin, and a heating cylinder is fixedly arranged in the stirring bin; the four stirring plates are arranged in the cylindrical heating cylinder; the stirring unit is used for stirring the raw materials, and the water control unit is used for allowing the raw materials to be foamed by being matched with the foaming unit; and airpressure balance plates in the water control unit are connected through a first electromagnetic valve, a first pressure gauge and a first opening, and the right sides of the air pressure balance plates are connected with the outside through a third electromagnetic valve. The polyurethane heat preservation board foaming system is mainly used for foaming the reactants in the production process of the polyurethane thermal insulation board, the uniformity of the raw materials can be improved, the raw materials can be sufficiently foamed, and the foaming efficiency of the raw materials is improved.

Description

technical field [0001] The invention belongs to the technical field of polyurethane production equipment, in particular to a foaming system for polyurethane insulation boards. Background technique [0002] With the tight housing area of ​​modern families, there is an increasingly strong demand for thin-walled household refrigerator products. In the manufacturing process of refrigerator thin-walled products, due to the thinning of the refrigerator wall, the thermal insulation performance and mechanical strength of the foam layer are deteriorated, and the flow of foaming raw materials at the corners with complex structures is insufficient, resulting in false filling. . However, the cyclopentane foaming system widely used in refrigerators cannot meet the technical requirements of thin-walled products. Therefore, it is imperative to develop a foaming system with high fluidity, high heat retention, and high strength. [0003] There are also some technical solutions for polyuret...

AI Technical Summary

Problems solved by technology

The above-mentioned machine tool is equipped with a product foaming chamber at the bottom of the bed, and a rolling chain-belt conveying mechanism is installed on the bottom of the foaming chamber to cast polyurethane sealing strip products. After the products enter the F front inlet of the temperature-controlled foaming chamber, the products Under the control and conveying speed adjustment, it can be foamed and shaped quickly within a certain period of time, and the foamed product is sent from the rear outlet. Although this technical solution can realize foaming of polyurethane sealing strips, this technical solution can only To solve the problem of blockage of the discharge pipe, this technical solution cannot fully stir the raw materials, nor can it fully contact the raw materials with water, thereby affecting the foaming efficiency of the raw materials, which limits the invention

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