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N type mud pump

The hydraulic design of the N-type mud pump fully considers the characteristics of solid-liquid two-phase flow, and the flow parts are made of alloy anti-wear cast iron. This type of pump has the characteristics of high efficiency, long service life of flow parts, low cavitation margin, and stable operation.

1. Product overview:

The N-type centrifugal slurry pump is a product designed and manufactured based on my country's "JB/T5295-91 Centrifugal Slurry Pump" standard.

The hydraulic design of the N-type pump fully considers the characteristics of the solid-liquid two-phase flow, and the flow parts are made of alloy anti-wear cast iron. This type of pump has the characteristics of high efficiency, long service life of flow parts, low cavitation margin, and stable operation.

The N-type pump is a horizontal, single-stage, single-suction, cantilevered centrifugal pump. It is suitable for conveying liquids containing suspended solid particles (such as concentrate, tailings, ash, coal slime, cement, soil, sand, etc.). The large concentration of the conveyed slurry is 50~70% by weight, and a small amount of large solids is allowed to pass Particles, but its particle size should not be greater than 80% of the small size of the flow cross-section.

The outlet of the pump can be transformed from vertical upwards to horizontal. High-lift pumps can be used in series with two stages. The rotation direction of the pump is clockwise from the driving end (100NG40Ⅲ, 100NG47Ⅲ, 100NG53Ⅲ, 100NGⅢ type is now counterclockwise).

In order to meet the needs of long-distance transportation of power plant ash and ore dressing tailings, we have absorbed the advantages of ash pumps, combined with our factory's years of experience in producing ash pumps, and developed a multi-stage series ash pump, which can be operated in five-stage series. It can be operated in a single stage, and the final stage pressure can reach 4.2Mpa.

二、 过流部件材质选用表：

材料

名称

镍硬

1号

镍硬

1号

镍硬

1号

高碳15-2

低碳15-2

铬26

铬28

代号

N-A

N-B

N-C

15-2A

15-2B

Cr26

Cr28

硬度

HRC

≥55

≥53

≥55

≥58

≥55

≥56

表列合金抗磨白口铸铁中：N-A、N-B对粗颗粒有较好抗磨蚀性；N-C抗磨性与N-A类似，但对大颗粒、高应力抗冲击磨蚀能力较强；Cr26、Cr28抗磨性与N-A类似，但具有较好的抗酸性腐蚀能力（介质PH值可至4）；15-2B属抗磨材料Cr15Mo3的改进品种，抗磨性优，价格相应较高。

在用户未提出所要求材料时，我们提供低合金锰球铁或52号合金抗磨铸铁的过流部件。

三、 性能参数表

型号	流量 Q （m3/h)	扬程 H (m)	效率 η (%)	汽蚀余量 r (m)	转速 n (r/min)	配套电机功率 (Kw)
80NG40	47	43	30	4.9	1470	30
	76	40	42
	105	38	46
80NG80	54	83	30	5.1	1470	75,90
	95	80	39
	120	78	44
100ND (100NDⅠ)	90	21.5	45	3	1100	18.5,22
	130	20	57
	170	18	60
	130	38	50	5	1470	45,55
	170	36	58
	230	33	63
100ND27	105	28	52	5	1470	30,37
	150	27	58
	195	25	63
100ND36	180	37	57	5	1470	45
	220	36	62
	230	35	63
100NG40Ⅲ (100NG40)	105	42	40	5.1	1470	45,55
	148	40	54
	210	38	59
100NG46Ⅰ	100	48.5	42	5.1	1470	45,55,75
	140	46	54
	190	45	58
100NG47 Ⅲ	160	50	52	5.1	1470	75,90
	230	46	60
	260	47	61
100NG53Ⅲ (100NG53)	160	53	54	5.1	1470	75,90
	200	51	58
	260	49.5	62
100NGⅢ (100NG)	160	62	54	5.1	1470	75,90
	200	59	58
	260	56	62
100NG60Ⅰ 100NG60Ⅱ	140	62	50	5.1	1470	90
	180	60	56
	220	58	59
100NG75	170	77	50	5.1	1470	90,110
	200	75	55
	240	71	58
100NG90	160	93	46	5.1	1470	155,160
	220	90	53
	260	87	56

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