Fire pump high frequency work

When a fire pump is used to pump a slurry stream of liquid containing large, medium and small sizes of material, the liquid is tangentially injected into the cylindrical chamber to create a swirling flow and a portion of the liquid is tangentially removed from the chamber ; Injecting the slurry axially into the chamber, the vortex separating the oversize material from the rest of the slurry and liquid; axially removing the remaining slurry and liquid from the chamber and injecting it into the fire pump inlet; The material pumped out of the fire pump acts as a spray liquid forming the vortex to reduce wear on the fire pump impeller and increase fire pump efficiency. A method for reducing the wear of a fire pump impeller and increasing the efficiency of a fire pump when the fire pump is used to pump a stream of mud containing liquid of a large size to a small size in a liquid. The method comprises the steps of injecting liquid tangentially into a vortex chamber Forming a vortex and tangentially removing a portion of the liquid from the chamber; injecting the slurry axially into the chamber, the vortex separating the large size of the material from the remaining slurry and liquid; leaving the remaining Slurry and liquid are axially removed from the chamber and sprayed into an inlet of a fire pump; the material exiting the fire pump is used as a spray liquid to form the vortex; therefore, the large-sized material moves toward the vortex And as a result, medium and small sizes of material and liquid are injected into the fire pump, thereby reducing the wear of the impeller and allowing the pump to operate at a high speed, thereby improving the efficiency. Fire pump using a special hydraulic design and structural design, so that the flow pressure sub-file is more suitable than ordinary centrifugal water pump construction fire water supply system selection, flow-pressure curve without hump. High reliability due to wear-resistant, corrosion-resistant, anti-mesh materials for all parts that generate friction due to rotation. Multi-stage pump can be equipped with double water outlet, high load carrying capacity, strong anti-overload capability, .

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