Flow rate and operating principle of liquid dispenser

Release time :

2021-04-30

What is a liquid dispenser? It is used to distribute various liquids to different workshops. Includes liquid dispenser, washing machine, dishwasher, car wash liquid dispenser, etc. Because each application is different, the flow rate and operation principle of the liquid dispenser is different.

The liquid dispenser is a component of a uniformly supplied multi-pass evaporator. The structure of the liquid dispenser has centrifugal type, Yi Jing type and Wenqiu type. Most of our country uses Yi Jing type.

Liquid dispensers come in many sizes because of the number of channels, inlet and outlet pipe calibers, and outlet pipe lengths. The capacity of the liquid dispenser varies according to the specifications. The flow of each specification has a upper limit and a lower limit. If the flow exceeds the upper limit, the pressure of the liquid dispenser and the liquid pipe will drop too much. If the flow rate is below the lower limit, the pressure distribution is uneven, so the load range, number of channels, nozzle length, evaporation temperature and each channel must be considered when selecting the liquid distributor.

It has a quantitative piston and a control piston for each pair of air vents. In the case of the main circuit or main circuit II, after one main circuit is charged, the other main circuit is in a state of pressure relief, and only the leakage associated with the charged main circuit will produce oil. Therefore, each work cycle consists of two work processes.

So, let's break down how it works? There are two aspects.

The first working process is with the two pistons, the quantitative piston and the control piston at the lower end with the lubrication stopped. When main path I is charged, main path II will be removed and the control piston will move up first. And then the piston moves up. In this way, the lubricant discharged by the quantitative piston controls the groove in the piston and exits through the upper outlet. Control the movement of the working piston when the discharged lubricant can enter is in a state of mind in China at the time of the discharge path II.

The second working process is that in working process 2, main path II is charged and main path I is unloaded. Therefore, the piston movement is first controlled and then the quantitative piston movement is controlled. The lubricant discharged when the quantitative piston moves is discharged through the air outlet below. The pressure from the air outlet to the lubrication point is equal to the pump output pressure minus the pressure loss through the main and the pressure loss through the distributor. In order to control the piston for sufficient thrust, the pressure difference between the two main roads must be more than 50bar.