Single Suction Fire Pump
The single-suction pump sucks in horizontally and axially, and spit out radially upwards. The pump is a suspension structure, and the rotor parts can be withdrawn for maintenance without disassembling the inlet and outlet pipelines during maintenance. The pump is connected with the motor through a common elastic coupling or an extended elastic coupling, and the shaft seal of the pump is sealed with a soft packing. The bearing is a single row radial ball bearing, lubricated with lubricating oil. From the motor side, the pump rotates clockwise.
The basic components of a single-suction pump are a high-speed rotating impeller and a fixed snail-shaped pump casing. The impeller with several (usually 4~12) backward curved blades is fixed on the pump shaft, and the pump shaft is driven by the motor to rotate at high speed. The impeller is the part that directly performs work on the liquid in the pump, and is the energy supply device of the centrifugal pump. The suction port in the center of the pump casing is connected with the suction pipe, and the bottom of the suction pipe is provided with a one-way bottom valve. The discharge port on the pump casing side is connected to a discharge pipe equipped with a regulating valve.