First of all, the parameters of metering pump of dosing device, that is, flow rate and pressure, will be given specific numerical values and specific medium properties (including corrosion, temperature, viscosity and other conditions) for each working condition in this design.
1, low flow and low pressure, electromagnetic diaphragm metering pump can be selected, which is convenient to install and easy to use.
2. In the case of low medium flow and pressure, you can choose mechanical diaphragm metering pump, which is often used in water treatment and other working conditions, and acts as PAM dosing pump and PAC dosing pump.
3. Under high pressure, if the medium is non-corrosive, plunger metering pump can be selected according to flow parameters. If the medium is special, hydraulic diaphragm metering pump can be selected, which has good sealing and corrosion resistance.
Secondly, we should consider the requirements of the working environment, such as whether explosion-proof and waterproof are needed, indoor use or outdoor use. These conditions are related to the choice of motor.
The control of metering pump of dosing device, such as manual adjustment, frequency conversion adjustment and signal control, should also be considered, and the appropriate mode should be selected according to the working conditions.