Low Pressure DC fountain Pump

Low pressure DC fountain pump

Product Overview:

Dongda low pressure DC fountain pump is mainly used for landscape fountains, dry fountains and indoor and outdoor public fountains. Is a DC21V-60V voltage power supply safety submersible pump, in line with GB16895.19-2002 building electrical equipment Part 7, special equipment or site requirements and JGJ-T16-2008 civil building electrical design code, swimming pools and other pools in the dry fountain, pool, artificial waterfall and other projects, Voltage requirements for equipment use.According to user needs, the driver is equipped with DMX512 communication interface, analog voltage interface and other signal interfaces, which is easy to control the motor running speed to achieve the flow head change of the pump. In the application of the fountain project, it can be directly connected with the fountain control or light control system for communication speed regulation, without the need to equip the frequency converter and cumbersome communication conversion scheme.

Composition and principle:

The low voltage DC fountain pump electrical system is composed of switching power supply, driver and low voltage DC fountain pump.Working principle: The switching power supply converts the conventional voltage of AC220V and above into a DC low-voltage safety power supply, and transmits it to the driver, who receives the DMX512 protocol speed regulation signal or analog voltage signal and other signals sent by the computer, and controls the motor speed of the fountain pump according to the corresponding command data, so as to achieve the change of the flow head of the low-voltage DC fountain pump.

1. switching power supply

The role of switching power supply is to provide safe power supply for DC submersible pump, the product is more mature, optional brand, model. From the perspective of safety, switching power supply must be selected with isolation function, the built-in active power factor correction circuit (PFC) of the high-end products are conducive to improving energy efficiency and reducing harmonic interference in the power grid, power efficiency can reach more than 90%, while with short circuit protection, overload protection, overvoltage protection, overheating protection and other functions. When selecting its capacity, more than 20% of the design surplus should be considered, which can effectively improve the service life of the product and reduce the failure rate.

2. Driver

The driver is an essential equipment for the low-voltage DC fountain pump, and the DC fountain pump must rely on the driver to drive rotation. According to user needs, the driver is equipped with DMX512 communication interface, analog voltage interface and computer output signal interface, which is easy to control the motor running speed to achieve the flow head change of the pump. In the application of the fountain project, it can be directly connected with the fountain control or light control system for communication speed regulation, without the need to equip the frequency converter and cumbersome communication conversion scheme.The driver uses the "six-step commutation method" to output the pulse current matching the pump motor in a certain time sequence, and drives the rotor to rotate by constantly changing the direction of the current and the magnetic pole.

3. Low pressure DC fountain pump

DC brushless motor is a kind of synchronous motor, the stator winding of the motor is three-phase symmetrical star connection, the rotor of the motor is equipped with rare earth permanent magnet, no excitation current, no excitation loss, compared with the AC asynchronous motor efficiency to increase 15%~25%. It has the advantages of high precision, high efficiency and fast response, and can realize stepless speed regulation function with the driver. Low pressure DC fountain pump adopts stainless steel shape structure, shell, impeller and other parts are stainless steel 304 or 316 material, can effectively prevent corrosion, suitable for fresh water, pool water and other water quality environment. IP68 protection grade, small overall size, more reliable quality.