Liquid-ring vacuum pump

Abstract

The invention discloses a liquid-ring vacuum pump comprising a pump body, an impeller, suction disks and end covers. The suction disks are fixed to the inner sides of the end covers, and the pump bodyis installed between the suction disks at the two ends; the impeller is installed in the pump body, and bearing seats at the two ends of the impeller are each provided with a radial support bearing;the radial support bearings are supported by the bearing seats arranged on the outer sides of the end covers, and the shaft order outer diameter at one end of the impeller is provided with adjusting seats abutting on the radial support bearings through axial locating bearings; fixing nuts are installed at the positions, in the adjusting seats, of the outer sides of the axial locating bearings in apress mounting mode; and the fixing nuts are arranged on the shaft end faces of the impeller in a sleeved manner, and locked by locking bolts; and outer rings of the adjusting seats are connected with locating seats, locking rings and a rear cover through threads in sequence. According to the liquid-ring vacuum pump, through arrangement of the adjusting seats on the shaft ends of the impeller, the clearance between the impeller and the suction disks is regulated, and the liquid-ring vacuum pump has the advantages of the simple structure, convenient regulation and accurate location; and the minimum clearance between the impeller and the suction disks is ensured, and the clearance is uniform.

Description

technical field [0001] The present invention relates to the technical field of vacuum pumps, and more specifically, relates to a liquid ring vacuum pump. Background technique [0002] A liquid ring vacuum pump, which can also be used as a compressor, is called a liquid ring compressor. Liquid ring vacuum pumps were originally used as self-priming pumps, and then gradually used in many industrial sectors such as petroleum, chemical industry, machinery, mining, light industry, medicine, food and environmental protection. Liquid ring vacuum pumps are widely used in many industrial processes, such as vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum moisture resurgence and vacuum degassing. [0003] Existing liquid ring vacuum pumps: the loss of gas in the pump chamber from the intake chamber to the exhaust chamber and its ultimate pressure are determined by the gap between the two ends of the impeller and the end cover ...

AI Technical Summary

Problems solved by technology

The existing process: to obtain a suitable gap by adding pads between the pump body and the end cover, or to improve the machining accuracy of each part, to control the bearing clearance by relying on the processing size, and to ensure that the gap on both sides is even; the operation and processing are very complicated. Traditional processing equipment and technology are difficult to guarantee high precision requirements, the interchangeability of mass production is poor, and the performance consistency cannot be effectively controlled

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