Liquid delivery system for precision liquid metering and auxiliary gas delivery
A gas-assisted, liquid-based technology, applied in the field of infusion systems, to achieve the effects of preventing crystallization blockage, low energy consumption for transportation, and preventing solution contamination blockage
Inactive Publication Date: 2012-07-11
CHINA AUTOMOTIVE TECH & RES CENT
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Problems solved by technology
However, in the current existing technology, there are still deficiencies in metering accuracy, delivery pressure, delivery energy consumption, and preventing solution crystallization and clogging, preventing solution pollution and clogging, etc.
Method used
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[0080] The infusion system for precise liquid metering and gas-assisted delivery of the present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings.
[0081] Such as figure 1 As shown, the liquid precision metering and gas-assisted delivery infusion system of the present invention includes: gas source 1, air on-off solenoid valve 2, gas three-way structure 3, power supply 4, electronic control unit 5, power source 6, power transmission Mechanism 7, liquid source 8, liquid filtration unit 9, pressurization unit 10, pressure regulation and evacuation unit 11, metering unit 12, liquid-gas mixing unit 13 and liquid-gas delivery unit 14; wherein, the gas source 1 that outputs compressed gas passes through The air on-off solenoid valve 2 is connected to the gas three-way structure 3, and the gas three-way structure 3 is respectively connected to the pressure regulating and emptying unit 11 and the liquid-gas mixing unit 13; ...
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Disclosed is a liquid delivery system for precision liquid metering and auxiliary gas delivery. A gas source outputting compressed gas is connected with a gas three-way structure through an air on-off electromagnetic valve, the gas three-way structure is respectively connected with a pressure-regulating emptying unit and a liquid mixing unit, and a power source outputting driving power is connected with a diaphragm of a pressurizing unit through a power transmission mechanism. A liquid outlet of a liquid source for providing liquid to be delivered to the liquid delivery system is connected with the pressurizing unit through a liquid filtering unit, a liquid outlet end of the pressurizing unit is connected with a liquid inlet end of the pressure-regulating emptying unit, a liquid return end of the pressure-regulating emptying unit is connected with a liquid return port of the liquid source, a liquid outlet end of the pressure-regulating emptying unit is connected with a liquid-gas mixing unit through a metering unit, a liquid outlet end of the liquid-gas mixing unit is connected with a liquid-gas delivery unit, and the delivered liquid is delivered to a destination through the liquid-gas delivery unit. The liquid delivery system is accurate in metering, low in delivery pressure, low in delivery energy consumption and capable of preventing liquor from crystallizing, blocking and being polluted.
Description
technical field [0001] The invention relates to a transfusion system. In particular, it relates to a liquid infusion system with low pressurized precision metering and gas-assisted delivery. Background technique [0002] High-precision metering and low-pressurization transportation of liquids are widely used in storage and transportation, chemical industry, pharmaceuticals, environmental protection and other fields. Typically, in the after-treatment system of engine exhaust gas, at an appropriate temperature, a certain concentration of The urea solution into the engine exhaust pipe can effectively reduce the nitrogen oxides (NOx) in the engine exhaust. The patent "a mixing device for mixing urea and air" (publication number CN101203664A), and "an air-assisted power atomization urea reducing agent injection control system" (publication number CN101793184A) both disclose a Air-assisted liquid delivery devices and systems for engine exhaust aftertreatment systems. However, i...
Claims
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IPC IPC(8): F17D1/14F17D1/12F17D1/16F17D3/18
Inventor 于镒隆杨建军刘双喜马杰栗国
Owner CHINA AUTOMOTIVE TECH & RES CENT