Accurately quantitative remedy-adding system

Abstract

The precise medicine adding system includes one medicine adding device, one solenoid valve, one buffering storage tank, one medicine applying pump and one medicine liquid storing tank connected successively. It has also one electronic liquid level gauge set in the buffering storage tank, and one control circuit connected to the electronic liquid level gauge, the solenoid valve and the medicine applying pump. The precise medicine adding system with buffering storage tank and corresponding control circuit has raised medicine applying accuracy, high safety and reliability, and less influence from pressure, pipeline and other external factors.

Description

technical field [0001] The invention relates to an accurate quantitative dosing system. Background technique [0002] At present, many equipment in the production environment need to add chemical liquid. By adding chemical liquid to the system, the role of production control or stable system can be achieved. For example, in the cooling water system of refrigerators, scale inhibitors need to be added to prevent scaling of circulating cooling water In the exhaust gas treatment scrubber, sodium hydroxide or sulfuric acid needs to be added to neutralize the treated gas, and a bactericide is needed to prevent bacterial growth. [0003] In the process of dosing, when it is impossible to apply the post-stage test (such as PH value, conductivity, etc.) to control the start and stop of the dosing pump, the following method is often used to add the medicine solution: a measuring cup is placed at the end of the pipeline , by adjusting the stroke of the dosing pump, the valve on the pi...

AI Technical Summary

Problems solved by technology

With the passage of time, the characteristics of the pipeline, such as resistance, the characteristics of the valve, such as the possible fouling inside, the performance of the pump, such as the aging of the diaphragm, etc., are changing. precise

When the amount of medicine added is small, the expected effect will definitely not be achieved, resulting in a decrease in the performance of the entire system, such as fouling of the condenser of the refrigerator, increase in pipeline resistance, etc.

When the amount of dosing is too large, on the one hand, it will cause waste of medicines. Some medicines are expensive, especially imported medicines used in some specific systems. On the other hand, it may cause water pollution and cause irreversible damage to the drainage treatment system. If it is too large, it will kill the fungus used in the drainage system, so some systems have to perform flow test and adjust the system frequently, such as adjusting the pump stroke according to the concentration of the liquid medicine in the water after sampling and analyzing the cooling water, or using manual dosing to ensure dosing Accurate amount

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