An emergency hydraulic system of a central hydraulic transmission hydraulic rake thickener

Abstract

The invention discloses an emergency hydraulic system of a center hydraulic transmission hydraulic lifting harrow thickener. The series problems caused by power failure of the thickener are solved. The emergency hydraulic system is characterized in that a hydraulic bottom plate block is arranged, a low pressure overflow valve, a high pressure safety valve, a reversing valve I, a throttling valve, a one-way valve II, a pressure reducing valve and a reversing valve II are arranged on the hydraulic bottom plate block, and a hydraulic motor, a one-way throttling valve, an oil cylinder, an electromagnetic ball valve II, an oil return oil filter, an energy accumulator inlet one-way valve, a hydraulic energy accumulator, a pressure detector, a nonelectric lifting harrow electromagnetic ball valve, a manual stop valve, a pressure gauge, a pressure sensor, a nonelectric lifting harrow ball valve connecting emergency power supply and the like are respectively connected through pipelines. According to the emergency hydraulic system of the center hydraulic transmission hydraulic lifting harrow thickener, high pressure oil is stored through the hydraulic energy accumulator, the high pressure oil is released during power failure, and nonelectric automatic harrow lifting is achieved. The emergency power sully is used, so that the nonelectric lifting harrow electromagnetic ball valve is in a normally-closed state and is opened when sudden power failure happens, the nonelectric lifting harrow electromagnetic ball valve is opened by the emergency power supply, the high pressure oil is made to automatically enter an oil cylinder lifting harrow, and the facts that materials press the harrow and a pool is cleared are avoided.

Description

technical field [0001] The invention relates to a hydraulic system of a concentrator, more precisely, it is a hydraulic system of a central hydraulic transmission hydraulic rake concentrator. Background technique [0002] When the thickener is in use, the rotating torque of the scraper rake has a certain range. When the load increases and the rotating torque is greater than the set value, the rake needs to be lifted. Therefore, high-end thickeners are equipped with an automatic rake lifting device. The existing automatic rake lifting systems are all based on normal power supply. However, when the power supply of the power grid is suddenly interrupted during the user’s use, the factory area has no power, all actions of the equipment stop, and the rake lifting system also stops working at the same time. The highest position cannot be mentioned. During the power outage, the gravity settling in the thickening tank did not stop, and the solids suspended in the tank sank to the b...

AI Technical Summary

Problems solved by technology

At this time, the user needs to clean the concentration tank and remove the material pressed on the scraper before restarting the machine. The workload of cleaning the tank is huge, and it wastes resources and pollutes the environment.

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