Automatic acid preparation device used for cleaning quartz crucible

Abstract

The invention discloses an automatic acid preparation device used for cleaning a quartz crucible. The device comprises a PLC (programmable logic controller) control system, a water container, a concentrated acid container and a mixed solution container, wherein the water container and the concentrated container are respectively connected with the mixed solution container through pipelines; a first valve and a first pump are arranged between the water container and the mixed solution container; a second valve and a second valve are arranged between the concentrated container and the mixed solution container; the bottom of the mixed solution container is connected with a first water outlet tube and a second water outlet tube; the first water outlet tube is provided with a third pump and a third valve; and the second water outlet tube is provided with a fourth valve. When the device is used, water and the concentrated acid are added to the mixed solution container to prepare an acid solution having a required concentration, and the whole process is completed through the PLC control system and is displayed through HMI (human machine interface) pictures, so the concentration of the acid solution can be effectively monitored, and working efficiency improvement and human body safety guarantee can be realized, thereby the device is in favor of use popularization.

Description

technical field [0001] The invention relates to an electric automatic control device, and specifically designs an automatic preparation device for acid used in the pickling process of a quartz crucible. Background technique [0002] At present, quartz crucibles are widely used because of their advantages such as high purity, strong temperature resistance, large size and high precision, good heat preservation, energy saving, and stable quality. In the prior art, the quartz crucible is cleaned with common inorganic acid, and the acid solution is usually artificially prepared. This method has the following disadvantages: in the process of preparing the acid solution, pure acid needs to be used, because the pure acid is relatively strong, manual operation will bring hidden dangers to personal safety, and the safety factor of work is not high; In the manual acid preparation process, it is difficult to control the concentration of the acid solution, and the work efficiency is not...

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: in the process of preparing the acid solution, pure acid needs to be used, because the pure acid is relatively strong, manual operation will bring hidden dangers to personal safety, and the safety factor of work is not high; During the manual acid preparation process, it is difficult to control the concentration of the acid solution, and the work efficiency is not high

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