A submersible pump for mining combustible ice by decompression method

Abstract

The invention discloses a sinking pump for exploiting combustible ice with a decompression method. The sinking pump comprises an outer shell, a stator winding installed in the outer shell, a sealing cover installed on the inner periphery of the stator winding and made of non-magnetism metal materials, a motor rotor installed in the sealing cover through a bearing and a pump body connected to the outer shell and the lower end of the sealing cover; a motor is formed by the stator winding and the motor rotor, an impeller is rotationally installed in a pump body, and a first ratchet wheel assembly is connected between the impeller and a rotating shaft of the motor rotor; and the rotating shaft of the motor rotor downwards penetrates the pump body, and a drilling rod is connected to the lower end of the rotating shaft through a second ratchet wheel assembly. When the motor rotates clockwise, the drilling rod can be driven to rotate, and therefore the sinking pump can be driven into a rock stratum below the sinking pump installation position through the drilling rod, the sinking pump can keep the standing state, and extra fixation is not needed; and when the motor rotates anticlockwise, only the impeller is driven to rotate to enable the sinking pump to be in the working state.

Description

technical field [0001] The invention belongs to the field of water pumps, in particular to a submersible pump used for mining combustible ice by a decompression method. Background technique [0002] The literature number is CN102195387B, which discloses a sealing structure of a submersible pump, which includes a conventional structural form of a drag motor driven by its rotating shaft, which is composed of a rotor and a stator embedded in a winding, and a protective jacket located on the outermost layer ; It is characterized in that: the above-mentioned mover and the rotating shaft part that drives the above-mentioned liquid pump and is located outside the liquid pump are surrounded by a metal sealing isolation shield in a three-dimensional form, and are used for the connection between the rotor and the stator. The metal-sealed isolation and shield part between them should be acted as a thin non-magnetic material, and the metal-sealed isolation and shield part made of the th...

AI Technical Summary

Problems solved by technology

——In this patent solution, since the metal seal isolation shield is not completely closed only at the lower end and the shaft seal of the motor, the submersible pump must keep the motor at the upper liquid pump to ensure its sealing effect, so in use Generally, it is necessary to use fixing parts to fix the submersible pump in a stable position before it can be used. When this type of submersible pump is used on a deep seabed (for example, when the depth of combustible ice is mined on the seabed, the depth exceeds 300 meters), the fixing of this type of submersible pump It is very difficult, and it is difficult to achieve the effect of maintaining the sealing performance for a long time with ordinary submersible pumps.

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