| 摘要 |
PURPOSE:To provide for easy accessibility for disassembly or maintanance by securing an internal casing made of a wear-resistant material for higher wear resistance of a slurry pump, by means of a step on an external casing and to prevent thermal stress by leading a fluid to the outside of the internal casing. CONSTITUTION:40, 50 denote wear-resisting internal casings, along the external peripheries of which flanges 42, 52 are formed, respectively. The internal casings are opposed at a contact part 54 and firmly held between a casing cover 2 and a step 9 which is formed on an external casing 1. The rear casing 50 is tightened to the casing cover 2 with a bolt 53 and a clearance (h) is formed between. Some of discharged liquid is constantly fed into the clearance so that there may be no difference in temperature between the internal and external faces of the internal casing, thereby preventing creation of a thermal stress. If the cover 2 is removed, the rear casing 50 is easily pulled out together with an impeller 5. |
