一、产品简介
3G、3GR系列普通三螺杆泵主要用于输送中低粘度的润滑性液体。在工业生产中作为液压泵、润滑泵、燃油泵、输送泵。泵由基础件：泵套、泵体、螺杆和附件：底脚、安全阀、轴承体等组成，通过改变附件达到改变泵的不同安装形式。
3GBW系列保温三螺杆泵主要用于在常温下不能输送的高粘度润滑性液体，常作为沥青、重燃油、渣油、原油的输送或喷然用。热载体可以是蒸气和热油、热水，冷载体可以是气体或液体。现广泛应用于公路建设中沥青的输送。一般高工作温≤250oC，超过此温度在订货时请说明。
二、特点
结构简单，体积小、允许高转速、工作平稳可靠、压力脉动小、流量稳定、噪音小、效率高、有自吸能力、节能。
三、使用范围
螺杆泵适用于输送燃料油、润滑油、液压油、植物油、沥青及其他润滑性液体和油、水、气混合液体。
四、螺杆泵代号说明
形式代号 3G BW F 45X2 - 46 W Z
|
形式代号 |
3G |
BW |
F |
45X2 |
46 |
W |
Z |
|
|
系列 |
结构特征 |
安装形式 |
规格 |
螺旋角（度） |
轴承位置 |
泵进口位置 |
1. 系列
3G表示三螺杆泵。
2. 结构特征
|
符号 |
结构说明 |
|
无 |
单吸螺杆泵 |
|
S |
双吸螺杆泵 |
|
BW |
保温螺杆泵 |
3. 安装形式
|
符号 |
安装形式 |
|
无 |
底脚卧式 |
|
F |
法兰支架式 |
|
L |
柱脚立式 |
4. 规格
|
规格范围 |
对应系列产品 |
|
30 X4~200 X3 |
3G |
5. 螺旋升角
详见性能及参数表
6. 轴承位置
7. 泵进口位置（从泵头升出轴端看）
|
符号 |
泵进口方向 |
|
无 |
表示泵进口位置在右边 |
|
Z |
表示泵进口位置在左边 |
五、3G三螺杆泵选型
选泵要点
1. 首先应根据油品的粘度选择适当的泵转速，以保证泵的（NPSH）r能满足用户的实际吸入条件。
2. 介质粘度V＞760mm2/s时，请与我厂联系，我厂帮助用户先泵。
3. 从性能表中选定泵的规格及相应粘度下的压力流量后，可以查到泵的轴功率N，选定配套电机功率Nm时应功率备量。
Nm≥K×N其值参见下表：
|
N（Kw） |
N≤5 |
5＜N≤10 |
10＜N≤50 |
N＞50 |
|
K |
1.25 |
1.2 |
1.15 |
1.1 |
4. 材料的选择
①输送柴油、重油（燃料油），泵套用锡青铜。
②输送润滑油、液压油，泵套用灰铸铁、球铁、锡青铜。
③输送植物油，或含酸和碱等腐蚀性液体，泵体、螺杆、泵套等零件采用不锈钢或其它耐腐蚀材料。
六、3G三螺杆泵型号：
|
3G35*4-46 |
3G35*3-52 |
|
|
|
|
|
3Gr36*4 |
|
|
|
|
|
|
3Gr42*4A |
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|
|
|
|
|
3G45*4-36 |
3G45*3-46 |
3G45*2-52 |
|
|
|
|
3G50*3-44 |
3G50*3-46 |
3G50*2-52 |
|
|
|
|
3Gr50*2 |
|
|
|
|
|
|
3G60*4-40 |
3G60*3-46 |
3G60*3-52 |
|
|
|
|
3G70*3-46 |
3G70*2-49 |
3G70*2-52 |
|
|
|
|
3Gr70*4 |
3Gr70*2 |
|
|
|
|
|
3G80*3-27 |
3G80*3-36 |
3G80*2-40 |
3G80*2-46 |
3G80*2-46 |
3G80*2-52 |
|
3G85*2-46 |
3G85*3-46 |
3G85*3-49 |
3G85*3-52 |
|
|
|
3Gr85*2 |
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|
|
|
|
|
3G90*2-46 |
3G90*2-49 |
3G90*2-52 |
|
|
|
|
3G100*4-40 |
3G100*3-44 |
3G100*3-46 |
3G100*3-52 |
|
|
|
3Gr100*2 |
|
|
|
|
|
|
3G110*3-46 |
3G110*2-52 |
3G110*2-54 |
3G110*4-40 |
|
|
|
3Gr110*2 |
|
|
|
|
|
|
3G120*4-36 |
3G120*3-46 |
3G120*2-49 |
3G120*2-52 |
|
|
|
3G130*4-36 |
3G120*3-40 |
3G130*3-44 |
3G130*3-46 |
|
|
|
3G140*3-46 |
3G140*2-49 |
3G140*2-52 |
|
|
|
|
3G150*3-46 |
|
|
|
|
|
|
3G160*3-46 |
|
|
|
|
|
|
3G180*3-40 |
3G180*3-44 |
|
|
|
|
|
3G200*3-36 |
3G200*3-40 |
3GS200*3-27 |
|
|
|
|
|
|
|
|
|
|
|
3G35*4-46 |
3G35*3-52 |
|
|
|
|
|
3Gr36*4 |
|
|
|
|
|
|
3Gr42*4A |
|
|
|
|
|
|
3G45*4-36 |
3G45*3-46 |
3G45*2-52 |
|
|
|
|
3G50*3-44 |
3G50*3-46 |
3G50*2-52 |
|
|
|
|
3Gr50*2 |
|
|
|
|
|
|
3G60*4-40 |
3G60*3-46 |
3G60*3-52 |
|
|
|
|
3G70*3-46 |
3G70*2-49 |
3G70*2-52 |
|
|
|
|
3Gr70*4 |
3Gr70*2 |
|
|
|
|
|
3G80*3-27 |
3G80*3-36 |
3G80*2-40 |
3G80*2-46 |
3G80*2-46 |
3G80*2-52 |
|
3G85*2-46 |
3G85*3-46 |
3G85*3-49 |
3G85*3-52 |
|
|
|
3Gr85*2 |
|
|
|
|
|
|
3G90*2-46 |
3G90*2-49 |
3G90*2-52 |
|
|
|
|
3G100*4-40 |
3G100*3-44 |
3G100*3-46 |
3G100*3-52 |
|
|
|
3Gr100*2 |
|
|
|
|
|
|
3G110*3-46 |
3G110*2-52 |
3G110*2-54 |
3G110*4-40 |
|
|
|
3Gr110*2 |
|
|
|
|
|
|
3G120*4-36 |
3G120*3-46 |
3G120*2-49 |
3G120*2-52 |
|
|
|
3G130*4-36 |
3G120*3-40 |
3G130*3-44 |
3G130*3-46 |
|
|
|
3G140*3-46 |
3G140*2-49 |
3G140*2-52 |
|
|
|
|
3G150*3-46 |
|
|
|
|
|
|
3G160*3-46 |
|
|
|
|
|
|
3G180*3-40 |
3G180*3-44 |
|
|
|
|
|
3G200*3-36 |
3G200*3-40 |
3GS200*3-27 |
|
|
|
|
|
|
|
|
|
|
|
3G35*4-46 |
3G35*3-52 |
|
|
|
|
|
3Gr36*4 |
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|
|
|
|
|
3Gr42*4A |
|
|
|
|
|
|
3G45*4-36 |
3G45*3-46 |
3G45*2-52 |
|
|
|
|
3G50*3-44 |
3G50*3-46 |
3G50*2-52 |
|
|
|
|
3Gr50*2 |
|
|
|
|
|
|
3G60*4-40 |
3G60*3-46 |
3G60*3-52 |
|
|
|
|
3G70*3-46 |
3G70*2-49 |
3G70*2-52 |
|
|
|
|
3Gr70*4 |
3Gr70*2 |
|
|
|
|
|
3G80*3-27 |
3G80*3-36 |
3G80*2-40 |
3G80*2-46 |
3G80*2-46 |
3G80*2-52 |
|
3G85*2-46 |
3G85*3-46 |
3G85*3-49 |
3G85*3-52 |
|
|
|
3Gr85*2 |
|
|
|
|
|
|
3G90*2-46 |
3G90*2-49 |
3G90*2-52 |
|
|
|
|
3G100*4-40 |
3G100*3-44 |
3G100*3-46 |
3G100*3-52 |
|
|
|
3Gr100*2 |
|
|
|
|
|
|
3G110*3-46 |
3G110*2-52 |
3G110*2-54 |
3G110*4-40 |
|
|
|
3Gr110*2 |
|
|
|
|
|
|
3G120*4-36 |
3G120*3-46 |
3G120*2-49 |
3G120*2-52 |
|
|
|
3G130*4-36 |
3G120*3-40 |
3G130*3-44 |
3G130*3-46 |
|
|
|
3G140*3-46 |
3G140*2-49 |
3G140*2-52 |
|
|
|
|
3G150*3-46 |
|
|
|
|
|
|
3G160*3-46 |
|
|
|
|
|
|
3G180*3-40 |
3G180*3-44 |
|
|
|
|
|
3G200*3-36 |
3G200*3-40 |
3GS200*3-27 |
|
|
|
|
|
|
|
|
|
|
|
3G35*4-46 |
3G35*3-52 |
|
|
|
|
|
3Gr36*4 |
|
|
|
|
|
|
3Gr42*4A |
|
|
|
|
|
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3G45*4-36 |
3G45*3-46 |
3G45*2-52 |
|
|
|
|
3G50*3-44 |
3G50*3-46 |
3G50*2-52 |
|
|
|
|
3Gr50*2 |
|
|
|
|
|
|
3G60*4-40 |
3G60*3-46 |
3G60*3-52 |
|
|
|
|
3G70*3-46 |
3G70*2-49 |
3G70*2-52 |
|
|
|
|
3Gr70*4 |
3Gr70*2 |
|
|
|
|
|
3G80*3-27 |
3G80*3-36 |
3G80*2-40 |
3G80*2-46 |
3G80*2-46 |
3G80*2-52 |
|
3G85*2-46 |
3G85*3-46 |
3G85*3-49 |
3G85*3-52 |
|
|
|
3Gr85*2 |
|
|
|
|
|
|
3G90*2-46 |
3G90*2-49 |
3G90*2-52 |
|
|
|
|
3G100*4-40 |
3G100*3-44 |
3G100*3-46 |
3G100*3-52 |
|
|
|
3Gr100*2 |
|
|
|
|
|
|
3G110*3-46 |
3G110*2-52 |
3G110*2-54 |
3G110*4-40 |
|
|
|
3Gr110*2 |
|
|
|
|
|
|
3G120*4-36 |
3G120*3-46 |
3G120*2-49 |
3G120*2-52 |
|
|
|
3G130*4-36 |
3G120*3-40 |
3G130*3-44 |
3G130*3-46 |
|
|
|
3G140*3-46 |
3G140*2-49 |
3G140*2-52 |
|
|
|
|
3G150*3-46 |
|
|
|
|
|
|
3G160*3-46 |
|
|
|
|
|
|
3G180*3-40 |
3G180*3-44 |
|
|
|
|
|
3G200*3-36 |
3G200*3-40 |
3GS200*3-27 |
|
|
|
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