Inline Multistage Horizontal Split Case Fire Pump Centrifugal Fire Water Pump

symmetrical, there are twisted blades between the two walls, the liquid enters the impeller from both sides, the manufacturing concave after static balance test.

Shaft (4), made of high-quality carbon steel. The center of the shaft is the impeller, fixed with Jian, sleeve and sleeve nuts on both sides, the right end of the shaft is installed with a coupling, directly connected with the motor, in the coupling end is not allowed to use the belt drive, if the belt drive is required, another bracket must be set up to support the belt pulley.

Double suction sealing ring (5) is made of cast iron. To prevent the high pressure water from leaking back into the water intake part of the pump, the double suction seal ring is made with a protruding semi-garden ring, embedded in the pump body, used to fix the double suction seal ring, which is a perishable part and can be replaced with spare parts after wear.

Shaft sleeve (6), made of cast iron, used to fix the position of the impeller and protect the wear of the shaft inside the packing chamber, is a wearable part, and can be replaced by spare parts after wear.

S, SH type pump has two supports, using single row radial ball bearings, installed in the bearing body (14) near the coupling end of the collective name bearing A parts, the other end is called bearing B parts, lubricated with grease. Because the impeller is completely symmetrical, in theory the pump does not produce axial force, but in manufacturing it is difficult to do the water flow through the pump on both sides and the gap at the seal ring is exactly the same, so the pump has the possibility of axial force, the axial force and vibration force is borne by the single-row radial ball bearing in the bearing B part.

The packing plays the role of sealing to prevent the air from penetrating into the pump and a large amount of liquid from seeping out. Packing seal consists of packing chamber, filling gland, packing ring, packing sleeve and packing material synthesized on the pump body and pump cover. A small amount of high-pressure water inside the pump cover flows into the packing chamber through the external water seal tube (or internal sink) and the packing ring to play the role of water seal.

The degree of packing tightness must be appropriate, not too tight and not too loose, in order to liquid can be a drop of a drop of seepage shall prevail, packing too tight, bearing easy to heat, while power consumption, packing too loose, liquid leakage, are to reduce the efficiency of the pump.