Underwater crusher

Abstract

The invention discloses an underwater crusher used for crushing underwater sediments and ledges. The underwater crusher comprises cutter frames, crushing shafts are rotatably and horizontally mounted on the cutter frames and are in transmission connection with driving mechanisms, spiral propelling blades are arranged on the crushing shafts, each spiral propelling blade includes a left blade and a right blade, the rotating directions of each left blade and corresponding right blade are opposite, the left blades are positioned on the left sides of the crushing shafts, the right blades are positioned on the right sides of the crushing shafts, a plurality of cutting teeth are arranged on the crushing shafts in a spiral manner and on the back sides of the propelling faces of the spiral propelling blades, and the spiral rotating directions in which the cutting teeth are distributed are as same as the rotating directions of the spiral propelling blades where the cutting teeth are positioned. Retaining plates are arranged on the cutter frames and are wrapped on the upper portions and the rear portions of the spiral propelling blades in a semi-encircling manner, and material sucking ports are correspondingly arranged in the middles of the retaining plates and the crushing shafts. The underwater crusher can crush the underwater sediments and hard ledges rapidly, and crushed objects gather towards the material sucking ports in the middle and are sucked away; the underwater crusher is reliable in operation, not easy to wear, and long in service life.

Description

technical field [0001] The invention relates to a crushing device, in particular to a device for crushing underwater deposits and ore layers. Background technique [0002] In the Chinese patent database, there is a method and equipment for cutting underwater structures, its application number: 02806927.7; application date: 2002-03-15; publication date: 2004-09-22; publication number: CN1531616; the device disclosed An apparatus for carrying out a method of cutting an underwater structure below the seafloor, the method comprising the steps of: (a) determining an ideal plane for cutting after taking into account the characteristics of the structure; (b) positioning cutting means and anchored in the vicinity of the cut area; (c) obtaining at least one perforation or drilling in the vicinity of the structure through the bottom surface and at least to a predetermined depth to cut the structure, along a direction parallel to the cut and preferably in the plane of the cut; ( d) in...

AI Technical Summary

Problems solved by technology

[0003] Its disadvantage is that the device is used for cutting underwater structures, such as residual column piers, and can realize cutting at a depth lower than its bottom surface

Its disadvantages are: the gear cutter is easy to wear, and it is not suitable for crushing the hard ore layer, the replacement cost is high, and the reliability is poor

Existing spirals only have single or double heads, which has a small amount of collection and low work efficiency

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