Liquid-discharging system and fractionating rectifying tower using same

Abstract

The invention relates to a liquid discharge system, which is characterized in that it is composed of an "AND gate" logic control system composed of liquid temperature and liquid level: it includes a glass tube liquid level gauge with a "black body" inside, an electric contact thermometer, a liquid discharge solenoid valve and the above , the lower liquid level limit photoelectric component and the "AND gate" logic circuit with six terminals; the liquid level gauge and the controlled tower kettle constitute a communication device, and the "black body" inside it can float in the glass tube of the liquid level gauge to communicate The top of the liquid, and moves with the change of liquid level; the upper and lower liquid level limit photoelectric components include photodiodes and light source beads, which respectively constitute four connection terminals, and are connected with the "AND gate" logic control circuit. The four terminals are connected; the photosensitive diode and the light source bulb are respectively installed on both sides of the glass tube liquid level gauge, and the installation heights of the upper and lower liquid level limit photoelectric components are the heights where the liquid level needs to be discharged and the discharge is stopped; "AND gate "The other two terminals of the logic circuit, one is connected with the electric contact thermometer, and the other is connected with the driving power supply of the liquid discharge solenoid valve.

Description

technical field [0001] The invention relates to a logical automatic control technology, specifically a logical "AND gate" automatic control system that can perform liquid discharge operation only when the two parameters of liquid temperature and liquid level reach the set value, which can be applied in the field of chemical separation In the still liquid discharge system of the rectification tower and other equipment, instead of manual control, it is transformed into an automatic discharge rectification tower. The international patent classification number is proposed to be Int.Cl.B41J2 / 175 (2006.01). technical background [0002] At present, in industrial liquid discharge control systems, such as in the field of chemical separation, the liquid level control and discharge systems of distillation column bottom liquid can be divided into two categories: [0003] One type is a manually operated rectification tower bottom liquid discharge system. The discharge system is determi...

AI Technical Summary

Problems solved by technology

The kettle liquid discharge system is expensive, the maintenance cost is high, the production cost is high, and there are quite high professional technical level requirements for the post personnel

At present, it is not easy to apply and promote in small and medium-sized enterprises

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