Turbine suction device for sand dredging ship

Abstract

The invention discloses a turbine sucking device for a sand excavating ship. The turbine sucking device comprises a bottom installing base plate, two opposite supporting rods are installed on the upper surface of the bottom installing base plate, a main shell is fixed to the tops of the supporting rods, a main turbine installing space is arranged in the center of the interior of the main shell, and a main liquid inlet hole communicated with the top of the main shell and the main turbine installing space is arranged inside the main shell. By means of the turbine sucking device, an engine is used for driving a main turbine rotating quickly, and therefore the sucking effect is achieved; the device is provided with a maximum rotation force control mechanism, under the condition of motor driving, pipe blockage is generated, the negative pressure phenomenon is formed, a motor can continuously rotate at the rated power, the negative pressure phenomenon cannot be increased further, and the motor is effectively protected; and in addition, the device is provided with a turbine auxiliary pressure boosting mechanism, under the condition that normal work of the motor is not changed, the main turbine can continuously rotate, the negative pressure effect is increased, and the sucking force is improved.

Description

technical field [0001] The invention relates to the technical field of sand dredging ship equipment, in particular to a turbine suction device for a sand dredging ship. Background technique [0002] At present, sand dredgers are indispensable in river channel regulation and sand control sites. Their main function is to dig out the sediment at the bottom of the river. In sand dredgers, the suction device is indispensable. The general suction device only uses The fast-rotating turbine performs the suction function, and its biggest defect is that the pipeline is blocked due to long-term work, which makes the turbine work under negative pressure, and finally causes the motor to burn out. In addition, in an emergency, the device Only by increasing the current to increase the suction strength, this method will still lead to a reduction in the service life of the motor. Contents of the invention [0003] The purpose of the present invention is to provide a turbine suction device...

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Problems solved by technology

[0002] At present, sand dredgers are indispensable in river channel regulation and sand control sites. Their main function is to dig out the sediment at the bottom of the river. In sand dredgers, the suction device is indispensable. The general suction device only uses The fast-rotating turbine performs the suction function, and its biggest defect is that the pipeline is blocked due to long-term work, which makes the turbine work under negative pressure, and finally causes the motor to burn out. In addition, in an emergency, the device Only by increasing the current to increase the strength of the suction, this method will still lead to a reduction in the service life of the motor

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