Looseness proof structure of bolts on water pump pipeline

Abstract

The invention discloses a looseness proof structure of bolts on a water pump pipeline. The structure includes a first water pipe and a second water pipe, a first flange and a second flange are formedon the outer walls, close to the end parts, of the first water pipe and the second water pipe respectively, a plurality of protrusion blocks are formed on the end face, close to the second flange, ofthe first flange, positioning holes penetrating through the first flange are formed in the protrusion blocks, and threaded holes penetrating through the outer wall of the second flange are formed in the inner walls of the upper ends of the positioning holes. A plurality of bolt through holes opposite to the positioning holes are formed in the second flange, fastening bolts abut against the end face of the second flange, D-shaped studs are formed on the fastening bolts, the studs penetrate through the bolt through holes of the second flange and the positioning holes of the first flange to be connected with nuts in a screw mode, the nuts are fixed to the first flange in a welding mode, limit bolts are connected in the threaded holes of the first flange in a screw mode, and the tail ends of the limit bolts press on the outer walls of planes of the fastening bolts.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to an anti-loosening structure for bolts on water pump pipelines. Background technique [0002] Centrifugal pump refers to the pump that transports liquid by the centrifugal force generated when the impeller rotates. It is mainly composed of impeller, pump body, pump shaft, bearing, sealing ring and stuffing box. Its main features include: compact structure, wide range of flow head, uniform flow, stable operation, small vibration, low equipment installation, maintenance and repair costs, etc. The pump body of the existing centrifugal pump is provided with inlet and outlet pipes respectively, and flanges are provided on the inlet and outlet pipes. The connection of the water pipes is realized through the flange and the bolt assembly, and the bolt assembly installed on the flange is pre-tightened by the spring washer. However, because the centrifugal pump will vibrate during oper...

AI Technical Summary

Problems solved by technology

The pump body of the existing centrifugal pump is respectively provided with inlet and outlet pipes, and flanges are provided on the inlet and outlet pipes. The connection of the water pipes is realized through the flange and the bolt assembly, and the bolt assembly installed on the flange is pre-tightened by the spring washer. However, because the centrifugal pump will vibrate during operation, the bolt assembly pre-tightened by the spring washer will still loosen, and the loosening of the bolt assembly will cause pipeline leakage

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