Variable frequency supply pump a lot of water treatment and water purification industry practitioners have been in contact, so you really know the variable frequency supply pump?

Small constant pressure variable frequency water supply pump is generally composed of water supply pump, five-way check valve, pressure transmitter, special inverter for back pump, air pressure pump, pressure gauge. Among them, frequency converter is the core component of frequency conversion water supply pump.

Variable-frequency Drive (VFD) is a power control device that controls ac motor by changing the mode of power supply frequency of the motor by using frequency conversion technology and microelectronic technology. Frequency converter is commonly run with frequency conversion air conditioning, frequency conversion pump and other occasions.

In the actual design process of the frequency conversion water supply system, there are a variety of USES, according to the use of different design of the corresponding frequency conversion water supply system.

Some simple water supply, small flow, less water supply point, short supply time. This situation with a single pump + a single inverter can be achieved.

There is a case, the project site to compare the weight, need to have two pumps, in case one pump is broken, another pump can also be put into use, automatic switching.

In another case, the water supply flow is not large, but it needs to work 24 hours a day. At this time, two pumps and two frequency converters are still needed.

At this time, someone will ask: if is 2 pump system, is not a single pump + a single inverter, such 2 sets can be. That's not true.

For example, there is a pure water project that actually requires a flow rate of 8 tons per hour. The system of 2 pumps is required. So how do you choose? If two sets of water output 4 t/h (single pump + inverter) design scheme is adopted, then if the water consumption is 1 ton, two 4 t/h pumps will be opened at the same time; If the water consumption is 3 t/h, the two pumps are also turned on at the same time and the water output is 1.5 t/h. In this way, every time the need to use water, will open 2 pumps, and the two pumps are in low efficiency state of operation, long-term operation, adverse to the pump.