可供選擇材料

零件名稱

材料名稱

代號(GB)

 

 

 

灰鑄鐵

球墨鑄鐵

鑄(zhù)鋼

HT250

QT400-18

ZG230-450

 

  輪(lún)

 

青銅

灰鑄鐵

矽黃銅

不鏽鋼

ZCuSn1OPb1

HT250

ZCuZn16Si4

ZGOCr18nIi12Mo2Ti

軸(zhóu)

不鏽鋼

碳鋼

2Cr13

45

 

泵體密封體

 

青銅

灰鑄鐵

矽黃銅

不鏽鋼

ZCuSn10Pb1

HT250

ZCuZn16Si4

ZGOCr18nIi12Mo2Ti

 

三、拆卸與裝配

    拆卸:

    1、關閉(bì)出口閥,打開放水塞和排氣塞(sāi)以排空(kōng)天天操B夜夜操B中的水;

    2、拆(chāi)除泵上所有輔助管路;

    3、拆除聯軸器防護罩;

    4、鬆(sōng)開並拆下密封蓋(gài);

    5、鬆開法蘭螺釘,用起蓋螺釘將泵體和泵蓋分(fèn)開,用起重機吊起泵蓋;

    6、軸承為稀油潤滑的,放掉稀油;

    7、拆下軸(zhóu)承體和軸承托架之間的連接(jiē)螺(luó)栓,鬆(sōng)開非驅動端軸承蓋螺母和連接螺栓;

    8、將(jiāng)軸承體退(tuì)出凹槽,並將轉子吊出泵體,平放(fàng)在安全的地方進一步拆卸;

    9、拆下非驅動(dòng)端軸承的軸承體;

    1O、鬆開並拆下圓螺母;

    11、從軸上拆下深溝軸承、軸套;

  12、拆下軸承蓋;

  13、從軸套上拆下擋水(shuǐ)圈;

pump with the motor directly.

Name

Materials

Code(GB)

Volute

casing

Case iron

Ductile cast iron

Cast steel

HT250

QT400-18

ZG230-450

 

 

Impeller

 

Cast iron

Bronze

Brass

Stainless steel

ZCuSn10Pb1

HT250

ZCuZn16Si4

ZGOCr18nIi12Mo2Ti

Shaft

 

Stainless steel

Cr-steel

2Cr13

45

Casing

Wear

ring

Cast iron

Bronze

Brass

Stainless steel

ZCuSn10Pb1

HT250

ZCuZn16Si4

ZGOCr18nIi12Mo2Ti

 

Ⅲ. DISASSEMBLY AND ASSEMBLY

     1. Close the suction and delivery gate valves and drain the pump by opening the drain plug;

     2. Remove any pipes between additional equipment and the pump;

     3. Remove coupling guard;

     4. Loosen and push back the seal cover;

     5. Undo flange screws and release the upper casing half from the lower casing half with the aid of the forcing screws, remove with lifting gear and store in a safe place.

     6. In case of oil - lubricated pumps, drain off the oil;

     7. Remove the screw connection between bearing housing and bearing brackets. Also undo the nuts and bolts which secure the bearing cover;

     8. Press the bearing housing out of the recesses and lift the rotor upwards out of the lower casing half. For further disassembly, place securely in horizontal positon.

     9. Pull off the bearing housing of the fixed bearing(opposite the drive end).

     10. Undo and twist off the grooved nut.

     11. Remove the deep groove ball bearing with bush from the shaft.

     12. Remove bearing cover.

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