Screw feeder for underwater coarse mineral particles

Abstract

The invention discloses a screw feeder for underwater coarse mineral particles. The screw feeder for the underwater coarse mineral particles comprises a cylinder and a rotary shaft. The rotary shaft is arranged in the cylinder and provided with screw blades. The two ends of the rotary shaft are pivoted to the cylinder. A feed port and a discharge port are formed in the outer walls of the two endsof the cylinder. The ends, close to the feed port and the discharge port, of the rotary shaft are each sleeved with an annular partition plate. The edges of the annular partition plates extend to positions near the inner wall of the cylinder. According to the screw feeder for the underwater coarse mineral particles, the internal pressure and the external pressure of the screw feeder can be kept balanced, so that uniform conveying of materials is achieved; meanwhile, the service life of the whole screw feeder is prolonged through the multiple sealing technique; and in addition, the adaptabilityof the feeder is improved through the replaceable screw blades.

Description

technical field [0001] The invention relates to the technical field of vertical pipeline hydraulic transportation for deep-sea mining, hydraulic coal transportation and land-based underwater mining, in particular to an underwater coarse-grain mineral screw feeder. Background technique [0002] In deep-sea mining technology, the deep-sea mineral resources (such as oceanic polymetallic nodules, cobalt-rich crusts, and polymetallic sulfides) collected by seabed ore gathering agencies are crushed by crushers and lifted to surface ships by pumps through vertical pipelines. The particle size of the crushed coarse particles is generally ≤50mm, and the conveying volume concentration is 10-20%. The collected solid particles can be evenly transported to the pump inlet through the underwater screw feeder, effectively reducing the pipeline and pump. Blockage, so that coarse particles can be transported evenly and stably. The existing underwater screw feeder has the following problems: ...

AI Technical Summary

Problems solved by technology

[0003] 1. The internal and external pressure of the underwater screw feeder in the complex deep sea environment is unbalanced, resulting in the inability to uniformly and stably convey;

[0004] 2. The two ends of the screw blade driven by the underwater screw feeder cannot be well sealed;

[0005] 3. The underwater screw feeder cannot achieve uniform feeding well. When the underwater screw feeder is working, the coarse-grained minerals are easy to block;

[0006] 4. For different solid particles, parameters such as the pitch and outer diameter of the helical blade cannot be quickly replaced

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