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DG85-80 boiler feed pump

item no.:
DG85-80X12DG85-80X10
lead time:
Customer Date
product orgin:
China multistage pump supplier
shipping port:
Tianjin China
payment:
L/C Or T/T
color:
Customer Color

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description

DETAILED DESCRIPTION：

DG85-80 boiler feed water pump is a horizontal single-suction multi-stage centrifugal pump, used to transport clean water and liquids with physical and chemical properties similar to water, suitable for medium and low pressure boiler feed water, and also suitable for high pressure water supply and drainage in factories or cities. The temperature of the conveying medium is -20 ℃ ～ 150 ℃, and the inlet allowable pressure is less than 0.6MPA. Due to the advantages of safe and stable operation, low noise, long life and easy installation and maintenance, it is widely used by power plant steel mills.

DG85-80 boiler feed pump structure description：

The main parts of the medium and low pressure feed pump (lift 50-684m) are generally made of high-quality cast iron, and the secondary high pressure feed pump (lift 409-1450m) is made of cast steel or stainless steel.

The pump casing part is mainly connected by a bearing body, a front section, a middle section, a rear section, a guide vane, etc., and the center line of the suction port of the front section is perpendicular to the horizontal or horizontal. The midline spit out in the rear section is perpendicular to the horizontal, and may also be horizontal.

The rotor part is mainly composed of the shaft and the impeller, shaft sleeve, balance plate and other parts installed on the shaft. The parts on the shaft are fastened with flat keys and sleeve nuts to make them integrated with the shaft. The whole rotor is supported on the pump casing by bearings at both ends, and the impeller in the rotor part is determined according to the number of pump stages. The rotor is driven by the motor. From the motor end, the pump rotates clockwise.

This type of pump uses rolling bearings, which are not subject to axial forces depending on the model. The pump should allow the rotor to move axially in the pump housing during operation. Radial ball bearings cannot be used. The bearing is lubricated with calcium-based butter.

The front, middle, and rear sections of the pump are sealed with molybdenum disulfide grease. The rotor parts and the fixed part are sealed by seal rings, guide vane sleeves, packing, etc. When the seal ring and guide vane sleeve are worn It should be replaced in time if it has affected the operation and performance of the pump.

This pump adopts packing seal or mechanical seal. Generally, it is better to use mechanical seal when the temperature exceeds 90 degrees. When using it, the position of the packing and the mechanical seal must be properly secured. The tightness of the packing and the mechanical seal must be appropriate. It is better to go out.

DG85-80 x (4-10) Boiler feed pump performance parameters:

型号/参数	流量 Q		扬程 H	转速 n	轴功率 Pa	配带电动机		效率 n	汽蚀量	叶轮直径	进出口径	出口口径	泵重
型号/参数	m3/h	L/s	m	r/min	kw	功率kw	型号	%	m	mm	mm	mm	kg
DG85-80×4	51 85 102	14.17 23.6 28.3	352 320 304	2950	82.86 105.82 118.93	160	Y2-315L1-2	59 70 71	3.2 4.5 5.5	255	0		870
DG85-80×5	51 85 102	14.17 23.6 28.3	440 400 380	2950	103.57 132.27 148.66	185	Y2-355S1-2	59 70 71	3.2 4.5 5.5	255	0		912
DG85-80×6	51 85 102	14.17 23.6 28.3	528 480 456	2950	124.29 158.73 148.66	200	Y2-315L2-2	59 70 71	3.2 4.5 5.5	255	0		954
DG85-80×7	51 85 102	14.17 23.6 28.3	616 560 532	2950	145.00 185.18 208.13	250	Y2-355M2-2	59 70 71	3.2 4.5 5.5	255	0		996
DG85-80×8	51 85 102	14.17 23.6 28.3	704 640 608	2950	165.72 211.64 237.87	280	Y2-355L1-2	59 70 71	3.2 4.5 5.5	255	0		1038
DG85-80×9	51 85 102	14.17 23.6 28.3	792 720 684	2950	186.44 238.09 267.60	315	Y2-355L2-2	59 70 71	3.2 4.5 5.5	255	0		1080
DG85-80×10	51 85 102	14.17 23.6 28.3	880 800 760	2950	207.15 264.55 297.33	355	Y2-450S--2	59 70 71	3.2 4.5 5.5	255	0		1122

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