Control program of preparation of pure water and water supply system
With the progress of the growing people's living standard, people drinking water quality requirements have become more sophisticated, and pure water manufacturing equipment and direct the development of water supply systems and applications is increasing. Here is a typical preparation of pure water and direct water supply system and its control system design.
Preparation of pure water main water storage tank, tank filter system and pure form, water through quartz sand, activated carbon, RO reverse osmosis and other multi-channel filter, into the net into the tank to complete the preparation of pure water. Pure water storage tank and the need to control the tank level and pressure constant, regular cleaning of the filtration system.
Pure pure water in the tank after the time of ozone treatment, ultraviolet disinfection, using constant approach to every faucet, to facilitate people to drink.
Control has the following requirements:
Low level of pure water tank filtering system to work, open the pump and water filtration system for water filtration treatment.
Cleaning of the filtration system needs to be stopped when the water filtration system.
Set to open in time for the ozone treatment and UV disinfection equipment, and closed the water supply pump. In disinfection, sterilization is complete ozone and UV disinfection equipment closed.
Pressure sensors through the water supply system and inverter for voltage regulation.
Can live on work status and parameters to view, set.
To create a remote part of the dedicated control room, remote monitoring unit running, if necessary, the unit can be controlled manually.
Control system selection and design:
Pure water treatment and supply systems with a large number of valve and a variety of processing equipment, in addition to logic outside the control also need regular, analog testing, closed-loop voltage control, only the intelligent control system to meet the requirements. PLC and human-machine interface is generally used for development, due to the PLC and HMI programming needs are, and the lack of experienced technical staff, and the PLC and HMI higher prices, resulting in high system capital and the development cycle.