Three Screw Pumps

Three screw pumps designed for oil applications of various temperatures in Petrochemical and Chemical factories, food and cereal processing, metallurgy, power station, building materials. Applicable to heavy oil, fuel, lubricant and similar liquids.

Three screw pump features

● For high temperature application, up to 150℃
● Applicable to non-corrosive lubricant liquids without solids. Ideal for fuel transfer, hydraulic engineering, heavy mechanic, marine engineering, printing & dying, chemical and petrochemicals.
● Mechanical seal, claw coupling. High and high efficiency operation with low noise and vibration.
● Stable of low without agitation and pulsation.

Three screw pumps application

It applies to deliver clean and non-corrosive medium which has lubricating troperty at temperature beow ≤150℃、with the viscosity of 5-760cSt,The pump’s working pressure range from 0.6MPa to 2.5MPa and flow capacity range from 0.6-123m3/h.

3G25X4 36X4 -46 three screw pump

3G45X4-46 3 screw pump

Three screw pumps feature

(1)Medium is delivered in axial direction continuously without agitation and pulsation.
(2)Small vibration and low noise
(3)High pressure and high efficiency
(4)Simple structure,easy disassembly and assembly
(5)Small volume and lighe weight
(6)Slight wear and long life of the pump
Structure:The pumps are sealed generally by mechanical seal and driven by the motor through the claw coupling.
Material: The driving and driven screw 16MnCrS5,40Cr,45,38CrMoALA 　Pump casing:HT200,QT450-10,ZCuSn10Pl,ZG270-500

Example of three screw pump model

Eg：3G25×4-46
3G：three screw pump
25：out-side dizmeter of the driving screw 25mm
4：potch number of the screw
46：46° pitch angle of the screw
R：hezvy fuel oil
r：light fuel oil
W：high temperature heated oil
N：high visc oil
A：code of design improvement

3G Series three screw pump structure:

structure 1

structure 2

1:Mechanical Seal
2:Rolling Bearing
3:Pump Casing
4:Screw
5:Pump Bush
6:Safty Valve

 

3 screw pump flow, head, power data table

Type	Outlet pressure P MPa	Flow Q		Speed n r/min	NPSHr m	Motor
		m3/h	L/min			kw	type
25×4-46	1.0	0.8	13	1450	4	0.75	Y802-4
	2.5	0.6	10			1.5	Y90L-4
	1.0	2.0	33	2900	4.5	1.5	Y90S-2
	2.5	1.6	26			3	Y100L-2
30×4-46	1.0	1.6	26	1450	4.5	1.1	Y90S-4
	2.5	1.2	20			2.2	Y100L1-4
	1.0	3.6	60	2900	5	2.2	Y90L-2
	2.5	3.2	53			4	Y112M-2
36×4-46	1.0	2.8	46	1450	4.5	2.2	Y100L1-4
	2.5	2.4	40			4	Y112M-4
	1.0	6.5	108	2900	5	4	Y112M-2
	2.5	6	100			7.5	Y132S2-2
42×4-46	1.0	4.8	80	1450	5	4	Y112M-4
	2.5	4.2	70			5.5	Y132S1-4
	1.0	10.5	175	2900	5.5	5.5	Y132S1-2
	2.5	10	166			15	Y160M2-2
45×4-46	1.0	6.3	106	1450	5	3	Y100L2-4
	2.5	5.9	99			7.5	Y132M-4
	1.0	13.5	225	2900	5.5	7.5	Y132S2-2
	2.5	13	217			15	Y160M2-2
60×4-46	1.0	15.5	255	1450	5	11	Y160M-4
	2.5	14.5	245			15	Y160L-4
	1.0	32	533	2900	5.5	18.5	Y160L-2
	2.5	31.5	525			37	Y200L2-2
70×2-46	0.6	24	400	1450	5	7.5	Y132M-4
	1.0	23.5	390			11	Y160M-4
	1.6	22.5	370			15	Y160L-4
70×4-46	1.0	24.5	408	1450	5	18.5	Y180M-4
	2.5	23.5	392			30	Y200L-4
80×2-46	0.6	36.5	608	1450	5	11	Y160M-4
	1.0	35	594			18.5	Y180M-4
	1.6	34.5	575			22	Y180L-4
80×4-46	1.0	37	617	1450	5.5	30	Y200L-4
	2.5	35	590			45	Y225M-4
100×2-46	0.6	72.5	1208	1450	5	22	Y180L-4
	1.0	71	1183			37	Y225S-4
	1.6	60.5	1158			45	Y225M-4
100×4-46	1.0	72.5	1208	1450	5.5	55	Y250M-4
	2.5	70	1165			75	Y280S-4
100×3-27	0.6	72	1196	1450	6	22	Y180L-4
	1.6	70	1160			55	Y250M-4
	2.5	69	1145			75	Y280S-4
120×3-27	0.8	123	2055	1450	6	55	Y250M-4
	1.5	120	2010			90	Y280M-4
	2.5	115	1920			132	Y315M-4