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

≥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

      

    

流量

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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