Method for manufacturing combined thermal insulation injection molding shell of valve

Abstract

The invention relates to the technical field of valve thermal insulation, in particular to a method for manufacturing a combined thermal insulation injection molding shell of a valve. The combined thermal insulation injection molding shell is characterized in that an injection molding waterproof cover (1) is installed on a valve body (2); a flange of the valve body (2) is provided with compressionmolding thermal insulation cotton A and compression molding thermal insulation cotton C; compression molding thermal insulation cotton B is installed under a valve pipe (13); a first screw hole and asecond screw hole are formed in a first adjusting cover; a third screw hole and a fourth screw hole are formed in a second adjusting cover; the first adjusting cover and the second adjusting cover are installed and fixed together through screw rods and nuts; a gasket A and a gasket B are installed on round pipes on the two sides of the valve pipe (13) correspondingly after the compression moldingthermal insulation cotton A and the compression molding thermal insulation cotton C are installed; the first adjusting cover and the second adjusting cover are installed on the compression molding thermal insulation cotton A and the compression molding thermal insulation cotton C correspondingly; a first injection molding shell and a second injection molding shell are installed and fixed througha screw rod A, a screw rod B, a screw rod C, a first nut, a second nut and a third nut; and the compression molding thermal insulation cotton A, the compression molding thermal insulation cotton C andthe compression molding thermal insulation cotton B wrap the flange of the valve body (2).

Description

Technical field [0001] The invention relates to the technical field of valve insulation sleeves, in particular to a method for manufacturing a combined insulation injection casing of valves, which can be widely used in the fields of petrochemical, electric power metallurgy, textile printing, biopharmaceuticals, marine locomotives, heating, ventilation and air conditioning, etc. The refrigeration equipment and the valve on the valve body are insulated. Background technique [0002] The common structures of valves and insulation sleeves in the prior art are composed of an insulation layer and an insulation shell. The insulation shell is sleeved on the outside of the insulation layer. The insulation layer is generally directly wrapped on the valve. The defects are installation and When disassembling and repairing, the insulation layer is destroyed, and it is necessary to add a new insulation layer, which increases the cost of maintenance. Summary of the invention [0003] The patent...

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Problems solved by technology

[0002] The common structures of valves and insulation sleeves in the prior art are: a heat insulation layer and a heat insulation shell. The heat insulation shell is set on the outside of the heat insulation layer. The heat insulation layer is usually directly wrapped on the valve. During disassembly and maintenance, the heat insulation layer is damaged, and it is necessary to add a new heat insulation layer, which increases the cost of maintenance

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