3.3.10 Water pump Function: To pump flushing fluid for cleaning bore.Structure : It is a horizontal double acting piston pump with single cylinder. It consists of pump body, driving (2.5Mpa). Water inlet & outlet, 5-way joint and gate valve (3/4’) etc. Each end of the driving arm is connected with piston rod reducing gearbox. In the middle, the arm is connected with piston rod by a nut, thus the rotation of the crank is transformed into reciprocating of the piston of piston rod is guided by 2 guide rods set on each side of it. The piston consists of piston cap, piston packing cup and piston seat.It reciprocates inside cylinder sleeve installed into the cylinder to complete its sucking & forking function. Backlid and packing gland seat are both connected to pump Body by double-screw bolts. Packing gland is fixed to the gland seat by 2 double=screw bolts to compact the packing cord.
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