What Is a Liquid Dispenser?
Liquid dispensers are devices that dispense a fixed amount of liquid from a tank in a single motion. They are used in a wide range of industries, from manufacturing processes such as substrate processing to automatic injection systems for washing machines and disinfectants. The air syringe type uses air from a compressor or other source to push a syringe filled with a liquid to be dispensed. Tube type dispenses liquid by applying pressure to a tube that contains the liquid.
Uses of Liquid Dispensers
Liquid dispensers are used in a variety of industries, including semiconductor, display, automotive, and battery manufacturing plants, toilets, washing machines, and automatic disinfectant injection systems. In semiconductors, displays, and batteries, they supply the liquid materials used; in automobiles, they supply paints and preservatives; and in toilets and washing machines, they supply detergents and disinfectants. When selecting a liquid dispenser, it is necessary to consider whether it is compatible with the liquid to be supplied, the accuracy of the volume to be dispensed, and the size of the volume to be dispensed.
Principle of Liquid Dispensers
The following is a description of the principle of operation of liquid dispensers, divided into air syringe type, volumetric type, and tubular type.
1. Air Syringe Type
The air syringe type consists of a syringe containing the liquid to be dispensed, a compressor, an open valve, and a control panel. During operation, the compressor increases the pressure and the release valve releases it, pushing the syringe under pressure and dispensing the liquid in the syringe. When the volume to be dispensed reaches the input value, the valve is closed by the control panel to stop dispensing.
2. Volumetric Type
The positive displacement type consists of a container containing the object to be dispensed and a positive displacement pump inside the container. During operation, the rotation of the motor activates the positive displacement pump, which pushes the fluid to be discharged.
3. Tube Type
The tubular type consists of a tube containing the fluid to be discharged and a compressor or other device to which pressure is applied. During operation, pressure is applied to the tube to dispense the fluid from the tube.