Pump cover of macrotype dredge pump

Abstract

The invention discloses a pump cover of a large scale excavating pump, comprising an irregularly shaped pump cover with the outer edge approximate to a parabola, wherein the outside of the pump cover is provided with reinforcing ribs which are determined through adopting a computer to carry out stress analysis and bearing strain simulation design; moreover, the reinforcing ribs gradually change according to the stress distribution formed by the pump cover and are continuously distributed in a circle; the wall thickness of the reinforcing ribs is gradually thickened in the shape of a ladder along the unfolding direction of an outer edge parabola. The pump cover solves the problem of flat plate bearing through adopting a computer to carry out stress analysis and bearing strain simulation design and consuming least material, thereby preventing the deformation of the pump cover caused by excessive pressure during use and meeting the use function of the pump; both pressure test and on-siteoperation test confirms the reasonableness of the design which can prevent the deformation of the pump cover exceeding the design data. In addition, the pump cover reduces material consumption and the weight of the pump cover.

Description

technical field [0001] The invention relates to a pump cover of a large dredging pump, in particular to the improvement of the reinforcement rib of the pump cover of the large dredging pump. Background technique [0002] For large-scale water pumps or pumps for transporting other liquids, they all have a large volume, such as the 1000WN dredging pump, whose single pump weighs 120 tons, which is currently the largest dredging pump in China. When the pump is delivering liquid or other medium, the impeller in the pump needs to rotate at high speed to deliver the delivery medium, which also generates a lot of pressure in the pump chamber. If the volume of the pump is small, the structural strength of the pump body is high, and the pressure in the pump will not deform the pump body. But for a large pump body, since the pump cover of the pump body is made of an irregularly shaped flat plate whose outer contour is similar to a parabola, the huge pressure in the pump is enough to d...

AI Technical Summary

Problems solved by technology

However, the randomly set reinforcing ribs may strengthen the parts that do not need to be strengthened, which increases the weight of the pump body, not only increases the manufacturing cost, but also increases the cost for subsequent transportation and use; 1. If there are insufficient reinforcement ribs or no reinforcement ribs in the parts with large deformation, there may be insufficient strength, which will cause the pump cover to deform and be scrapped.

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