Installation for continuous metering of liquid (variants)

摘要

The invention relates to installations for continuous metering of liquids and may be used in various branches of industry that require metering of liquids in a continuous mode.The installation for continuous metering of liquid, according to the first variant, contains a pressure pump (7) connected to a working capacity (1) through an inlet fitting (5) with a check valve (6). In the upper part of the working capacity (1) is set a damper (8) with nipple (14) and a pressure transducer (9) connected in series to a converter (13), a comparator unit (11) and an amplifier (12), forming an automatic pressure maintenance system connected to the pump (7). The capacity (1) is provided with an outlet fitting (2), on which is installed a control valve (4), forming a liquid metering channel. The outlet fitting (2) is provided with a flow sensor (3) and a converter (10) connected to the comparator unit (11).The installation, according to the second variant, contains a pressure transducer connected in series with a converter, a comparator unit and an amplifier, forming an automatic pressure maintenance system, connected to the pump. The capacity is provided with an outlet fitting, on which is installed a control valve, forming a liquid metering channel.The result consists in increasing the liquid metering accuracy, simplifying and improving the reliability of the metering installation.