一、LY长轴液下泵概述
LY型长轴液下泵是一种立式离心泵，适用于化工﹑石油﹑电力﹑冶金﹑制药﹑造纸﹑环保等多个行业部门，可用来进行对有腐蚀性液体，含有一定量固体颗粒液体的输送。是我厂选用国内目前秀的水力模型设计而成,高效节能稳定是LY液下泵的优点。
LY/LYO/LYG系列长轴液下泵，选用国际优秀的水力模型，泵设计和制造按AP1610VS4型执行，泵轴由泵盖和滑动轴承体内的滑动轴承支承，上轴承采用耐磨轴承，采用锂基润滑脂润滑。该系列泵适用于输送各种腐蚀性液体和清水，同时也适用于输送含有颗粒或纤维的各类污水。LY/LYO型其输送介质温度范围为-20℃~+120℃，LYG型输送介质可达+400℃，工作压力可达1.6MPa。
二、LY长轴液下泵结构特点
1.LY型长轴液下泵接轴结构安全可靠
2. 转子部件可以轴向调整
3.转子部件采用多点支撑，泵运转安全可靠。
4.滑动轴承采用外润滑或自润滑
5.泵起动时，叶轮已浸没在介质中，因而起动容易，不存在排气抽空问题
6.采用双端蜗壳泵体（口径80mm上），转子部件受径力小，轴挠度小，滑动轴承磨损小，寿命长。
7.从电机端看，泵为顺时针方向旋转。
三、LY长轴液下泵型号意义
LY40-160
LY--长轴液下化工泵
40--出口直径mm
160--叶轮名义直径mm
四、LY液下泵结构材料表
五、LY长轴化工液下泵参数性能表
| 型号 | 叶轮型式 | 流量 | 扬程 | 电机转数 n=2950r/min | 流量 | 扬程 | 电机转数 n=1450r/min |
| | | 比重γ=1 | 比重γ=1.35 | | | 比重γ=1 | 比重γ=1.35 |
| m3/h | m | KW | 电机型号 | KW | 电机型号 | m3/h | m | KW | 电机型号 | KW | 电机型号 |
| LY25-200 | A | 11.5 | 47 | 5.5 | Y132S1-2 | 7.5 | Y132S2-2 | 5.8 | 11 | 1.1 | Y90S-4 | 1.1 | Y90S-4 |
| B | 10.5 | 40 | 4 | Y112M-2 | 5.5 | Y132S1-2 | 5.4 | 10 | 1.1 | Y90S-4 | 1.1 | Y90S-4 |
| C | 9 | 34 | 3 | Y100L-2 | 4 | Y112M-2 | 4.6 | 7.5 | 1.1 | Y90S-4 | 1.1 | Y90S-4 |
| D | 7.5 | 26 | 2.2 | Y90L-2 | 3 | Y100L-2 | 4 | 5.5 | 1.1 | Y90S-4 | 1.1 | Y90S-4 |
| LY40-160 | A | 28 | 31 | 5.5 | Y132S1-2 | 7.5 | Y132S2-2 | 14 | 7 | 1.1 | Y90S-4 | 1.1 | Y90S-4 |
| B | 25.6 | 27 | 5.5 | Y132S1-2 | 7.5 | Y132S2-2 | 13 | 6 | 1.1 | Y90S-4 | 1.1 | Y90S-4 |
| C | 22 | 20 | 4 | Y112M-2 | 5.5 | Y132S1-2 | 11 | 4.5 | 1.1 | Y90S-4 | 1.1 | Y90S-4 |
| D | 20 | 14 | 2.2 | Y90L-2 | 3 | Y100L-2 | 9.5 | 3.5 | 1.1 | Y90S-4 | 1.1 | Y90S-4 |
| LY40-200 | A | 29 | 51 | 11 | Y160M1-2 | 15 | Y160M2-2 | 14.5 | 12 | 1.5 | Y90L-4 | 2.2 | Y100L1-4 |
| B | 26 | 45 | 7.5 | Y132S2-2 | 11 | Y160M2-2 | 13 | 10.5 | 1.1 | Y90S-4 | 1.5 | Y90L-4 |
| C | 22 | 37 | 7.5 | Y132S2-2 | 7.5 | Y132S2-2 | 11.5 | 8 | 1.1 | Y90S-4 | 1.1 | Y90S-4 |
| D | 18 | 18 | 4 | Y112M-2 | 5.5 | Y132S1-2 | 9.5 | 6 | 1.1 | Y90S-4 | 1.1 | Y90S-4 |
| LY40-250 | A | 32 | 76 | 18.5 | Y160L-2 | 22 | Y180M-2 | 16 | 18.5 | 3 | Y100L2-4 | 4 | Y112M-4 |
| B | 30 | 70 | 15 | Y160M1-2 | 18.5 | Y160L-2 | 15 | 17 | 2.2 | Y100L1-4 | 3 | Y100L2-4 |
| C | 24 | 58 | 11 | Y160M1-2 | 15 | Y160M2-2 | 12.5 | 13 | 1.5 | Y90L-4 | 2.2 | Y100L1-4 |
| D | 21 | 45 | 7.5 | Y132S2-2 | 11 | Y160M1-2 | 10.5 | 10 | 1.1 | Y90S-4 | 1.5 | Y90L-4 |
| LY50-160 | A | 50 | 32 | 11 | Y160M1-2 | 15 | Y160M2-2 | 25 | 7.5 | 1.5 | Y90L-4 | 2.2 | Y100L1-4 |
| B | 45 | 27 | 7.5 | Y132S2-2 | 11 | Y160M1-2 | 22.5 | 6 | 1.5 | Y90L-4 | 1.5 | Y90L-4 |
| C | 38 | 20 | 5.5 | Y132S1-2 | 7.5 | Y132S2-2 | 19 | 4.5 | 1.1 | Y90S-4 | 1.1 | Y90S-4 |
| D | 31 | 15 | 3 | Y100L-2 | 4 | Y112M-2 | 16.5 | 3 | 1.1 | Y90S-4 | 1.1 | Y90S-4 |
| LY50-200 | A | 62 | 50 | 18.5 | Y160L-2 | 22 | Y180M-2 | 31 | 12 | 3 | Y100L2-4 | 3 | Y100L2-4 |
| B | 56 | 44 | 15 | Y160M2-2 | 18.5 | Y160L-2 | 28.5 | 10.5 | 2.2 | Y100L1-4 | 3 | Y100L2-4 |
| C | 49 | 35 | 11 | Y160M1-2 | 15 | Y160M2-2 | 25 | 8 | 1.5 | Y90L-4 | 2.2 | Y100L1-4 |
| D | 43 | 26 | 7.5 | Y132S2-2 | 11 | Y160M1-2 | 22 | 6 | 1.1 | Y90S-4 | 1.5 | Y90L-4 |
| LY50-250 | A | 70 | 80 | 30 | Y200L1-2 | 37 | Y200L2-2 | 35 | 19 | 4 | Y112M-4 | 5.5 | Y132S-4 |
| B | 66 | 73 | 30 | Y200L1-2 | 37 | Y200L2-2 | 33 | 17.5 | 4 | Y112M-4 | 5.5 | Y132S-4 |
| C | 60 | 58 | 22 | Y180M-2 | 30 | Y200L1-2 | 30 | 14 | 3 | Y100L2-4 | 4 | Y112M-4 |
| D | 50 | 43 | 15 | Y160M2-2 | 18.5 | Y160L-2 | 26 | 10 | 2.2 | Y100L1-4 | 3 | Y100L2-4 |
| 型号 | 叶轮型式 | 流量 | 扬程 | 电机转数 n=2950r/min | 流量 | 扬程 | 电机转数 n=1450r/min |
| | | 比重γ=1 | 比重γ=1.35 | | | 比重γ=1 | 比重γ=1.35 |
| m3/h | m | KW | 电机型号 | KW | 电机型号 | m3/h | m | KW | 电机型号 | KW | 电机型号 |
| LY50-315 | A | | | | | | | 44 | 27 | 11 | Y160M-4 | 11 | Y160M-4 |
| B | 40 | 23 | 7.5 | Y132M-4 | 11 | Y160M-4 |
| C | 35 | 18 | 5.5 | Y132S-4 | 7.5 | Y132M-4 |
| D | 30 | 13 | 3 | Y100L2-4 | 4 | Y112M-4 |
| LY80-160 | A | 94 | 30 | 15 | Y160M2-2 | 18.5 | Y160L-2 | 47 | 7 | 2.2 | Y100L1-4 | 3 | Y100L2-4 |
| B | 85 | 26 | 11 | Y160M1-2 | 15 | Y160M2-2 | 42 | 6 | 2.2 | Y100L1-4 | 2.2 | Y100L1-4 |
| C | 76 | 21 | 11 | Y160M1-2 | 11 | Y160M1-2 | 38 | 4.5 | 1.5 | Y90L-4 | 2.2 | Y100L1-4 |
| D | 66 | 15 | 5.5 | Y132S1-2 | 7.5 | Y132S2-2 | 34 | 3 | 1.1 | Y90S-4 | 1.1 | Y90S-4 |
| LY80-200 | A | 103 | 52 | 30 | Y200L1-2 | 37 | Y200L2-2 | 51 | 12.5 | 4 | Y112M-4 | 5.5 | Y132S-4 |
| B | 95 | 46 | 22 | Y180M-2 | 30 | Y200L1-2 | 47 | 11 | 3 | Y100L2-4 | 4 | Y112M-4 |
| C | 84 | 36 | 15 | Y160M2-2 | 22 | Y180M-2 | 40 | 8.5 | 2.2 | Y100L1-4 | 3 | Y100L2-4 |
| D | 70 | 28 | |
