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drilling pump

 

F-500, F-800 and F-1000  Mud Pumps

A1. Power End (frame, pinion shaft, crankshaft, crosshead and extension rod
 

1. Power end features:
 

.Continuous tooth herringbone gear.

.One-piece alloy steel crank.

.Renewable crosshead guide.

.The frame is made of welded steel plate to provide the frame with high strength, good rigidity and light　weight.

.The extension rod packing is duplex seal structure to provide the good seal result.

.The power end uses the combined lubricating system of forced lubrication and splash lubrication.

2. The frame is made of welded steel plate and stress

relief treated to obtain the good rigidity and high strength. The place where the crankshaft bearing is fitted is strengthened by using ribbed plates. The frame is furnished with the necessary oil basin and oil way system for cooling and lubricating purpose.

3.Crankshaft

The crankshaft is made of casted alloy steel and furnished with herringbone gear, connecting rod and bearing. The tooth form of the big geared ring is herringbone gear. The gear bore and the crankshaft surface are interference fitted and they are both fastened with bolts and lock nuts. The big end of the connecting rod is mounted on three eccentric straps of the crankshaft through single row short cylindrical roller bearings and the small end on the crosshead pin through double row long cylindrical roller bearing. Double row radial spherical roller bearings are mounted at both ends of the crankshaft.
 

A2. Fluid End (cylinders, valve assembly, liners and pistons)

1. Cylinders

 Cylinders are made of forged alloy steel, three cylinders of each pump are interchangeable. Valve-over-valve (through type cylinder)design reduces the cylinder volume and promote the volumetric efficiency. At customers'request, the cylinder surface may be nickel plated to improve the abrasion resistance. Discharge pulsation dampener, shear relief valve and discharge strainer are furnished at the outlet. F-500 pump suction inlet is fitted with 8"flange, F-500 pump suction inlet with 10"flange and F-1000 pump suction inlet with 12"flange.

2. Valve Assembly
 

The suction valve and the discharge valve for above three mud pumps are interchangeable. F-500 mud pump uses API#5 valve pot, F-800 and F-1000 mud pumps use API#6 valve pots.
 


 

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