PUMP FOR PUMPING SMELT

摘要

A pump for pumping smelt comprises a body (1) in which a shaft (4) which is connectable to a drive is mounted on an upper plain bearing (2) and on a lower radial plain bearing (3), with a working wheel (5) secured on the shaft (4). The lower radial plain bearing (3) comprises a rotor part (15) and a stator part (16). The rotor part (15) is in the form of two slit bushings (17) which are secured on the shaft (4), and the stator part (16) is in the form of two slit bushings (18) which are secured in a band (19) coaxially with respect to the shaft (4). The bushings (17) and (18) are respectively secured by flat rings (24) and (33) and comprise cylinder segments (20), (28) which are arranged equidistantly around the circumference and are respectively disposed in a cylindrical depression (21) of the shaft and in a cylindrical depression (29) of the band (19) and are secured in the radial direction by conical clamping rings (22), (30) and in the axial direction by spring-loaded rings (23), (31). The pump has a design of the lower radial bearing that is simpler to manufacture, and scratches are prevented in the bearing, and this in turn provides for increased reliability of the pump during operation.