積水回流，進口設有止回閥。部分型號還設有底閥，根據用戶使用情況，可裝底閥或不裝，裝底閥時應卸下螺塞。
Screw plugs are placed at the top and the bottom of
the pump bodv respectively for pouring or discharging Water．To avoid the return flow of
the water m the pump when the pump stops，a non-return
valve is installed at the irdet．A bottom valve is also
installed in pumps of certain model．It can be installed
or not according to the customers uses．When it is
installed．the screw plug should be unscrewed．
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材 料 Material |
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零件名稱 Name of parts |
海水 Sea water |
海輪淡水 Fresh water for seagoing ship |
內河輪淡水 Fresh water for inland fiver ship |
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泵體、泵后蓋Pump Body,rear prop cover |
ZcuZn16Si4 |
QT450-10 |
HT200 |
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葉輪、密封環(huán)Vane wheel,Sealing ring |
ZcuZn16Si4 |
HT200 |
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托架、聯軸器Bracket, Shaft coupling |
QT450-10 |
HT200 |
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填料壓蓋Gland |
ZcuZn16Si4 |
QT450-10 |
HT200 |
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軸套Shaft
sleeve |
QA19-4 |
45 |
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軸Shaft |
1Cr18Ni9Ti |
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底座Base |
Q235-A焊接件(weld assembly) |
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4．1運轉前的準備Preparation
for operation
4．1.1起動泵前先盤動泵軸，確信轉子無卡住及磨擦現象。
Before starting the pump，turn
the pump．shaft by hand．Make
sure thatit Can revolve smoothly．
4．1.2全開進口閥。Turn
on the inlet valve fully．
4．1.3打開出口閥或出口彎管上測壓孔，或打開出口閥的 南開度以便在自吸時排氣。
Tum on the outlet valve or the pressure measuring
hole at the outlet bend or turn on the outlet valve 1/10 so as to discharge air
when the pump is self-sucking．
4．1.4第一次起動時應擰開泵體頂部的螺塞，將泵體內灌滿水，嚴禁未加水
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