中國總代理（福斯FLOWSERVE集團）

產地中國上海,德國品牌,美國福斯FLOWSERVE集團總公司全資收購。

Liquid ring vacuum pumps 液環式真空
in close coupled design 機泵同軸設計
LEMC 25, 50, 90, 125, 150, 250
PRESSURE RANGE:
入口壓力范圍： 33 – 1013 mbar
SUCTION VOLUME:
入口流量： 24 - 280 m3/h
CONSTRUCTION TYPE
結構型式
SIHI liquid ring vacuum pumps are displacement pumps of
uncomplicated and robust construction with the following particular
features:
SIHI 液環式真空泵是結構簡單使用可靠的容積變化式泵,具有如下特點：
nearly isothermal compression
幾乎等溫壓縮,
oil-free, as no lubrication in the working chamber
therefore non-polluting
在工作腔內無需潤滑,因而無油,純凈
Capable of handling of nearly all gases and vapours
可處理幾乎所有的氣體和蒸汽
small quantities of entrained liquid can be handled
可處理少量的夾帶液體
easy maintenance and reliable operation
易維護,高可靠性
low noise and nearly free from vibration
低噪音,幾乎無振動
wide choice of materials, therefore alicable nearly
everywhere
廣泛的材質選擇,基本上可用于所有場合
shaft not in contact with the medium
軸不接觸介質
protection against cavitation as standard
氣蝕保護作為標準配置
incorporated dirt drain
一體式排污
no metallic contact of the rotating parts
旋轉部件沒有金屬接觸
SIHI liquid ring vacuum pumps LEMC are single-stage
SIHI LEMC 系列液環式真空泵是單級泵。

APPLICATION
應用
Handling and exhausting of dry and humid gases; entrained liquid can
be handled during normal duty. The pumps are applied in all fields
where a pressure of 33 to 900 mbar must be generated
干氣和濕氣的處理和抽除;正常條件下可處理夾帶的液體. 此真空泵可
用于所有需要33 mbar到900 mbar的場合。
NOTE

泵運轉期間需連續不斷地補充工作液（通常為水）,以帶走
氣體壓縮而產生的熱量和補充部分隨氣體排出的工作液。此
部分工作液可在汽液分離器中與氣體分開（請見樣本附件部
分）,以重新利用。
泵可按需要配備一個連接,以保證在運轉條件下連續地排放
被污染的工作液。
The direction of rotation is clockwise, when looking from the
motor towards the pump.
從泵的驅動端看,泵的旋轉方向為順時針。
2
GENERAL TECHNICAL DATA 常規技術數據
Pump type
泵型號 Unit
單位
LEMC25
LEMC50
LEMC90
LEMC125
LEMC150
LEMC250
Synchronous speed
同步轉速 50 Hz rpm 3000 1500
Max. compression over atmospheric pressure
較大背壓 bar 0,3
Max. admissible pressure difference
允許較大壓差 bar 1,1
Test pressure above atmospheric pressure
水壓試驗（表壓） bar 1 1 3 3 3 3
Moment of inertia of the rotating pump parts and water filling
滿水時轉動部件的慣性力矩 kg . m2 0,003 0,0095 0,035 0,053 0,069 0,097
Sound pressure level at a suction pressure of 80 mbar
在80mbar 入口壓力下的噪音 dB (A) 68 69 65
Dry gas
Max. gas temperature 干氣 °C 200
較大吸氣溫度
Saturated gas
飽和氣 °C 100
Service liquid 工作液
max. recommended temperature for water as working liquid
工作液為水的較大推薦溫度 °C 40
max. admissible temperature for other suitable working liquids
對適合的工作液較大允許溫度 °C 80
max. kinematic viscosity
較大動粘度 mm2/s 4
max. density
較大密度 kg/m3 1200
volume up to shaft level
到軸中心線的容積 liter 0.3 0.4 2.4 2.8 3.2 4.0
The combination of several limiting values is not admissible.
不允許將幾種較限值同時選擇
Material design 材料設計

Item 0K 0E
位號
Component
零件 LEMC 25/50 LEMC 90/125/150 LEMC 250
10.10 Casing
泵蓋
10.90 Central body
中間體
13.70 Guide disc
導流盤
0.6025
23.50 Vane wheel impeller
葉輪 1.4301 1.4408
XBPFF GBVGG EBPFF
Ceramic 陶瓷 Cr-Ni-St 鉻鋼 Cr-Ni-St 鉻鋼
Carbon 石墨 Carbon 石墨 Carbon 石墨
Perbunan 丁苯橡膠 Viton 氟橡膠 Perbunan 丁苯橡膠
Mechanical seal
Material option 1
機械密封
材料選擇1
Cr-Ni-St 鉻鋼 Cr-Ni-Mo-St 鉻鎳鉬鋼 Cr-Ni-St 鉻鋼
GBMGG
Cr-Ni-Mo-St 鉻鎳鉬鋼
Carbon 石墨
Viton PTFE encapsulated 氟橡膠外包裹聚四氟乙烯
43.30
Mechanical seal
Material option 2
機械密封
材料選擇2
Not available 不提供
Cr-Ni-Mo-St 鉻鎳鉬鋼
PTFE
75.40 Valve balls
閥球 聚四氟乙烯