Model PZ-9 mud pump is a horizontal triplex single acting piston pump which has the advanced structure and small in size. It has the reliable performance, good exchangeability, easy maintenance.
The pump consists of two main sections: power end & fluid end. Power end includes pump case pinion shaft, crankshaft, back cover, connection rod, crosshead etc.
Fluid end includes valve pot assembly, valves, cylinder liners, pistons, discharge manifold and suction manifold, etc.
In order to prevent the water-hammer and reduce pressure difference in the outlet side,there fixed a discharge pulsation dampener in the discharged manifold of the pump.
In order to prevent the over-pressure, there fixed a shear safty valve in the outlet side of the pump.
The gears, bearings, crosshead in the power end adopt splash system and pressure lubrication system. This guarantees a good lubrication.
The cylinder liners & the pistons in the fluid end is cleaned and cooled by a centrifugal spray pump with lubrication water.
This pump has a complete set of special tools for general maintenance & repair.
Technical Specifications:
Type: horizontal triplex single acting piston pump.
Rated input power : 1000HP
Rated speed: 130SPM
Stroke length: 9¡±(228.6mm)
Rated speed of pinion shaft : 582 rpm
Gear ratio: 4.48:1
Valve standard: API7#
Suction inlet : 10¡±
Discharge outlet : 5 1/8¡±(5000PSI)
Overall dimension : 205X94X100.5in (5200X2388X2550MM)
Pump weight : 44050 Ib(20000kg).
HW-446 mud pump are 100% replaceable to EWS-446 mud pump of American brand.
HW-440/446 Pump can be widely used in all kinds of works in oil field. When the cylinder liner specification is 6¡±-3 1/2¡±, piston structure is recommended and it is suitable for Oil-Well Repair and shallow-well drilling, etc. When the cylinder liner specification is 3 1/4¡±-2¡±, axial piston structure is recommended and it is suitable for high-pressure work.
HW446 Mud Pump Technical specification:
Rated input power 328KW (440HP)
Rated Stroke 320 Stroke/Minute(320SPM)
Stroke 152.4mm 6
Gear Ratio 4.578 :1
Max. operation pressure 35Mpa
Valve chamber Valve-Over API 4#
Max. liner dia. 6
Max. liner mud pressure(160 stroke/minute)16.9Mpa
Dia. of suction manifold, 6¡±(150#)
Flange Dia. of discharge manifold 3¡±(900#) Flange
Dia. pinion shaft 95.25 mm(3.75¡±)
Key 22.174x15.9mm
Dimension:(No included base): 2479X1219X1103 mm
Weight 4463 kg.
Stem-guided valve &Tri-arm seat features greater fluid flow than four-arm seats, as well as it features an extra wide metal to metal seal on the valve flange. The serrated upper surface on the valve gives a longer non-breathing seal between valve body and insert while the rigid seat cross-arms give greater strength and positive sealing.The strong, thick, valve knock off nut holds the insert tightly reducing flex and breathing which lessens the chance of foreign matter getting between valve and insert.
Stem-guided valve & Cross-arm seat features an extra wide metal to metal seal on the valve flange. The serrated upper surface on the valve gives a longer non-breathing seal between valve body and insert while the rigid seat cross-arms give greater strength and positive sealing.The strong, thick, valve knock off nut holds the insert tightly reducing flex and breathing which lessens the chance of foreign matter getting between valve and insert.
Tri-wing guided valve & Full open seat:
Three-wing guided valves and full open seats features greater fluid flow than four-wing valves, the unibody forged valve features greater strength than traditional welded-wing valve. Innovative unibody valve design eliminates snap rings, plates or keepers providing reduced maintenance by snap-on valve inserts and easy installation.
HNA makes two styles of Four-wing guided valves and full open seats which feature greater fluid flow through the full open seat. The full open seat provides easier valve maintenance and seat pulling, in valve-over- valve fluid ends.
Innovative unibody Four-wing guided valve design eliminates snap rings, plates or keepers providing reduced maintenance by snap-on valve inserts and easy installation. This combination will handle lost circulation material better than most conventional style valves and seats while the seating angle greatly improves flow characteristics and the heavy-duty load bearing capacity greatly improves service life.
The unibody forged Four-wing guided valve & Full open seat features greater strength than traditional welded-wing valve. Innovative unibody valve design eliminates snap rings, plates or keepers providing reduced maintenance by snap-on valve inserts and easy installation.
Heat-treated and internally hardened for high durability; available in various materials to meet a wide range of applications; standard one-and/or-two-piece configuration, with designs available for pressure of 5000psi(35.1Mpa), 7500psi(52.7Mpa), and 10000psi(70.3Mpa); discharge connections available on each side; suction connections on each side or front center.
Module studed Module
Material is 35CrMoA or 40CrMoNn alloy forged steel. To get better fiber texture, we use electric stove for second forging, or deoridation treatment. It is forged from three directions and the forging ratio is not less than 4.0:1.0. It can not have crack, impurity, looseness, overburns, etc. And weld is not allowed. It should be confirming to the stipulation of JB/TQ252-81, and should be checked by grade After quenching the rough module will be rough processed, then the hull hardness is HB285-330.
Mechanical property: b 850MPa, s670MPa, 5%,30%.
The two1:6(1:12) taper hole rolling treatments are checked by ring gage. Its contact area has continuous distribution on the circumference. The contact area is not less than 75% .The line of intersection of all cylindrical surface of the hull are facetted obtuse angle by hand or grinding wheel ,forming a circumference R8.Test pressure is 49Mpa, keep pressure 1 hour, pressure can not be reduced. Finished products have crack detection report.
