| 摘要 |
<p>The present invention is for a centrifugal pump for fluids containing large or long objects of solid material. Solid parts cause problems at the pumping with centrifugal pumps thereby that they both stick to the edge of the shovels of the pump wheel and get in between the pump wheel and the housing and stick to either one of these and may cause the pump wheel to slow down or get stuck. Large parts may also form a bridge between two shovels. Objects which have become stuck to and rotate together with the pumps wheel easily gather more objects and growth of the aggregate is often very rapid. In all of these cases the flow through the pump is disturbed and the capacity of the pump is reduced. These problems can be avoided with a centrifugal pump according to the invention at which the edges of the shovels (11, 12, 13, 14) extend themselves continuously from, in the direction of the flow, a lower part close to the wall (1-1A) of the housing and forwards in the direction of the flow of the pumped fluid and is at an acute angle thereto.</p> |
