正常工作时,泵轴4及叶轮3等组成的转动部件,由电动机通过联轴器带动一起运转,使叶轮内的液体产生离心力,获得一定的能量后从出口排出;同时,由于叶轮人口处负压的作用,将液体由人口吸人叶轮,使液体不断地由人口经叶轮送至出口。为防止叶轮出口处的高压液体从泵壳内回流至叶轮入口,造成内泄漏,在泵体上镶有密封环5,密封环与叶轮入口处的间隙较小,能起到一定的密封作用。为防止叶轮出口的高压液体经叶轮背侧沿泵轴泄漏至泵外,造成外泄漏,在轴套与泵盖之间留有填料函,装上填料,并以填料压盖将填料压紧,阻止液体外泄。
单级悬臂式离心泵有前开门式和后开门式两种结构。前开门式为叶轮前面为泵盖,后面为泵壳;而后开门式与前开门式相反,叶轮前面为泵壳,后面为泵盖。图2-2所示的IS型泵的结构为后开门式,图2-4所示的B型泵的结构为前开门式.
五、性能参数:
型号
|
流量 (m3/h)
|
扬程 (m)
|
电机功率 (kW)
|
转速 (r/min)
|
效率 (%)
|
汽蚀余量 (m)
|
IS50-32-125
|
12.5
|
20
|
2.2
|
2900
|
60
|
2.0
|
6.3
|
5
|
0.55
|
1450
|
54
|
2.0
|
|
IS50-32-160
|
12.5
|
32
|
3
|
2900
|
54
|
2.0
|
6.3
|
8
|
0.55
|
1450
|
48
|
2.0
|
|
IS50-32-200
|
12.5
|
50
|
5.5
|
2900
|
48
|
2.0
|
6.5
|
12.5
|
0.75
|
1450
|
42
|
2.0
|
|
IS50-32-250
|
12.5
|
80
|
11
|
2900
|
38
|
2.0
|
6.3
|
20
|
1.5
|
1450
|
32
|
2.0
|
|
IS65-50-125
|
25
|
20
|
3
|
2900
|
69
|
2.0
|
12.5
|
5
|
0.55
|
1450
|
64
|
2.0
|
|
IS65-50-160
|
25
|
32
|
5.5
|
2900
|
65
|
2.0
|
12.5
|
8
|
0.75
|
1450
|
60
|
2.0
|
|
IS65-40-200
|
25
|
50
|
7.5
|
2900
|
60
|
2.0
|
12.5
|
12.5
|
1.1
|
1450
|
55
|
2.0
|
|
IS65-40-250
|
25
|
80
|
15
|
2900
|
50
|
2.0
|
12.5
|
20
|
2.2
|
1450
|
46
|
2.0
|
|
IS65-40-315
|
25
|
125
|
30
|
2900
|
45
|
2.5
|
12.5
|
32
|
4
|
1450
|
41
|
2.5
|
|
IS80-65-125
|
50
|
20
|
5.5
|
2900
|
75
|
3.0
|
25
|
5
|
0.75
|
1450
|
71
|
2.5
|
|
IS80-65-160
|
50
|
32
|
7.5
|
2900
|
73
|
2.5
|
25
|
8
|
1.5
|
1450
|
69
|
2.5
|
|
IS80-50-200
|
50
|
50
|
15
|
2900
|
69
|
2.5
|
25
|
12.5
|
2.2
|
1450
|
65
|
2.5
|
|
IS80-50-250
|
50
|
80
|
22
|
2900
|
63
|
2.5
|
25
|
20
|
3
|
1450
|
60
|
2.5
|
|
IS80-50-315
|
50
|
125
|
37
|
2900
|
54
|
2.5
|
25
|
32
|
5.5
|
1450
|
52
|
2.5
|
|
IS100-80-125
|
100
|
20
|
11
|
2900
|
78
|
4.5
|
50
|
5
|
1.5
|
1450
|
75
|
2.5
|
|
IS100-80-160
|
100
|
32
|
15
|
2900
|
78
|
4.0
|
50
|
8
|
2.2
|
1450
|
75
|
2.5
|
|
IS100-65-200
|
100
|
50
|
22
|
2900
|
76
|
3.6
|
50
|
12.5
|
4
|
1450
|
73
|
2.0
|
|
IS100-65-250
|
100
|
80
|
37
|
2900
|
72
|
3.8
|
50
|
20
|
5.5
|
1450
|
68
|
2.0
|
|
IS100-65-315
|
100
|
125
|
75
|
2900
|
66
|
3.6
|
50
|
32
|
11
|
1450
|
63
|
2.0
|
|
IS125-100-200
|
200
|
50
|
45
|
2900
|
81
|
4.5
|
100
|
12.5
|
7.5
|
1450
|
76
|
2.5
|
|
IS125-100-250
|
200
|
80
|
75
|
2900
|
78
|
4.2
|
100
|
20
|
11
|
1450
|
76
|
2.5
|
|
IS125-100-315
|
200
|
125
|
90
|
2900
|
73
|
4.5
|
100
|
32
|
15
|
1450
|
73
|
2.2
|
|
IS125-100-400
|
100
|
50
|
30
|
1450
|
65
|
2.5
|
IS150-125-250
|
200
|
20
|
18.5
|
1450
|
81
|
3.0
|
IS150-125-315
|
200
|
32
|
30
|
1450
|
79
|
2.5
|
IS150-125-400
|
200
|
50
|
45
|
1450
|
76
|
2.8
|
IS200-150-250
|
400
|
20
|
37
|
1450
|
82
|
4.2
|
IS200-150-315
|
400
|
32
|
55
|
1450
|
82
|
3.5
|
IS200-150-400
|
400
|
50
|
90
|
1450
|
81
|
3.8
|
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