Flushing and sand-removing device for ship flap rudder bearing

Abstract

The invention discloses a seawater rotational-flow filtering and air-water hybrid flushing device for flushing and removing sand of a ship flap rudder bearing. The bottom of a seawater header pipe is communicated with a sea chest; the upper part of the seawater header pipe is connected with a water inlet of a seawater pump; the water outlet of the seawater pump is connected with a water inlet at the top of a fine taper pipe type hydrocyclone; the bottom of the fine taper pipe type hydrocyclone is a fine taper end; the top of the fine taper pipe type hydrocyclone is connected with a filter with a super filter screen through a pipeline; the filter with the super filter screen is connected with a Venturi pipe injector; an air source inlet of the Venturi pipe injector is connected with a high-pressure air bottle; the high-pressure air bottle is connected with an air compressor; the outlet of the Venturi pipe injector is connected with a screw coupling; the screw coupling is connected with a hollow flap rudder column which is provided with a bearing; and high-pressure air and cleaned flushing seawater are mixed by the Venturi pipe injector to increase flow speed and pressure, so that mud and sand in the flap rudder bearing is flushed, and a sand-removing effect is good.

Description

technical field [0001] The invention relates to a seawater swirl filter and air-water mixing flushing device for flushing and removing sand from the flap rudder bearing of a ship, which washes out the sediment in the flap rudder bearing and prolongs the service life of the flap rudder bearing. Background technique [0002] Flap rudders are widely used in the direction control of dredgers due to their small turning radius of operating ships. The bearings on the flap rudder posts installed on the main rudder blades work in muddy water for a long time, and the sediment will be deposited on the flaps. In the bearing on the rudder rudder column, greater friction is generated when the bearing is working, which reduces the life of the bearing and increases the maintenance cost. [0003] The traditional sediment removal methods are as follows: 1. Use fresh water on the ship to wash, but due to the large amount of washing water required, the cost of producing fresh water on the ship ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of high cost and poor effect of sediment washing in the ship flap rudder bearing in the prior art, the present invention provides a flushing and sand removal device for the ship flap rudder bearing, which is filtered by seawater swirl, and the air Washing with mixed water to achieve a good sand removal effect and prolong the service life of the bearing

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