Study Of Intensive Analysis And Finite Element Simulation On Engineering Ceramics Impeller Of Pulp Pump

The pulp pump is widely used in electricity generating station, iron and steel plant, cement mill and paper mill and so on. Because of much acidic property substance and hard granule in the liquid, the overflowing parts of the pumps are often strongly corrupted, especially the impeller, heart part of the pulp pump, is abraded faster than the others. According to statistics, the impeller made of the general carbon steel or general abrasion-resistant steel 16Mn, is usually used only half a year, the worst several tens days. Though various antifriction surface measures have used to improve the service life of the impeller, such as bead weld, flame plating, washing high molecular material and so on, the result is not obvious. The ceramic material has high strength, high hardness, low density, low-expansion coefficient, stand abrading, corrosion resistant, heat insulation, and good chemical stability excellent character etc. Because of this, the ceramic material is widely used in the airspace, petrochemical engineering, instruments and meters, mechanical manufacture and nucleus industry areas and so on. The purpose of this study is to improve the service life by developing the ceramics impeller and to reduce the cost. The paper firstly used quadratic algorithm to calculate the stress of the pulp pump impeller. Then using the ceramics impeller model founded by finite element analyzed the stress of it when racing and working. And ascertain the stress and its distributing by comparing the results calculated by the finite element to the results calculated by the quadratic algorithm. The results indicate the results calculated by the two methods is almost consistent, and the stress on the pulp pump vane and turntable is largest. And completely using engineering ceramics aluminium oxide to make the impeller can ensure that the impeller have the enough intensity when working. It provides evidence to the study of the ceramics impeller. Besides, the paper expatiated the agglomeration methods of the ceramics impeller, and analyzed the residual thermal stress in the pulp pump engineering ceramics impeller after agglomeration by the finite element method, and got the stress distributing and the whole displacement of the impeller after agglomeration.