Liquid material control system of sand mixer

Abstract

The invention provides a liquid material control system of a sand mixer. The liquid material control system comprises a liquid material control and detection system and a liquid material conveying system. The liquid material conveying system comprises a resin liquid material conveying pipeline and curing agent conveying pipelines for conveying different curing agents. Each curing agent conveying pipeline and the resin liquid material conveying pipe are each internally provided with a pump. The liquid material control and detection system comprises a temperature sensor and a PLC, wherein the temperature sensor is used for collecting the practical temperature of silica sand, and the PLC receives the temperature signal of the temperature sensor, compares the practical temperature with a preset temperature range and controls the rotating speeds of all the pumps on the basis of the comparison result. The liquid material control system aims at solving the problem that an operator cannot adjust the acid value of the added curing agents in time according to sand temperature, and the stable system which can automatically adjust the acid value of the curing agents and ensure molding sand quality is provided.

Description

Technical field [0001] The invention relates to an automatic control system, and more specifically, to a liquid material control system for a sand mixer. Background technique [0002] Sand temperature is the main factor affecting the operating time of molding sand, and different sand temperatures have different requirements for the acid value of the curing agent. Therefore, there is a problem that the operator fails to adjust the acid value of the added curing agent because the sand temperature has changed, resulting in a decrease in the quality of the molding sand. Summary of the invention [0003] In view of the problems in the related art, the purpose of the present invention is to overcome the problem in the prior art that operators cannot follow up the sand temperature to adjust the acid value of the added curing agent in time, and provide a method that can automatically adjust the acid value of the curing agent to ensure molding sand A stable system of quality. [0004] In o...

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Problems solved by technology

[0003] In view of the problems existing in the related art, the purpose of the present invention is to overcome the problem in the prior art that the operator cannot follow up the sand temperature in time to adjust the acid value of the added curing agent, and provide a method that can automatically adjust the acid value of the curing agent to ensure that the molding sand quality stable system

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