Z(H)LB series vertical axial-(mixed)-flow pump

ZLB(Q),HLB(Q) series products are all of a vertical structure and fitted with a vertical motor, With the impeller there are fixed, semi-adjustable and fully-adjustable type. The fixed type means both impeller and hub are cast integrally and the impeller angle is not adjustable; the semi-adjustable type means the mpeller can be turned to the desired angle by loosening the fixing screw on it in case the working onditions need to be changed, then fix all the impellers again; Z(H)LQ is the fully-adjustable type, that means the impeller angle can be adjusted through a mechanical or hydraulic adjustor with or without stopping.

Vertical axial-(mixed)-flow pump consists of the pump casing and the actuating part. The pump casing generally includes water inlet pipe, impeller, guide vane, pump shaft, elbow, middle pipe, sealing unit and clutch. For both middle and small pumps, a water inlet horn is used as the water inlet pipe while, for the large one, a toggle or bell water inlet passage is used, poured with concrete and fitted with imported basic parts. The adjustable impeller is formed with blade(stainless steel or copper alloy, in general), hub, water guide cone. For the middle and small pumps, both impeller and pump shaft are connected with flat pin and nut while, for the large and fully adjustable ones, a flange is used to connect both hub and main shaft. The pump s guide bearing is a rubber one and can be lubricated with going-through water or additional pure water. When lubricated with the going-through water, it has to be done to supply water for the rubber earing on the upper side via a water-led pipe and do not stop until water comes out of the pump normally.

Both middle and small pumps are directly actuated by a vertical motor, the motor is mounted on the motor seat and connected with the actuating shaft via an elastic cluth. Inside of the motor seat there are radial and thrust bearings, lubricated with engine oil or grease; for the one of a bigger power there is a water cooling mezzanine. Large pump is fitted with a large vertical motor, directly mounted on the motor s basic beam, and both motor shaft flange and pump shaft flange (hinged hole) are linked with bolt. The axial force of the pump is borne by the thrust bearing of the large vertical motor.

The pump moves clockwise viewing from the motor.