Hydraulic system used for belt conveyor

Abstract

The invention discloses a hydraulic system used for a belt conveyor. The hydraulic system comprises a rack, a plurality of motors, variable pumps, an oil tank, a valve block and a heat exchanger. The oil tank is positioned on the rack. An air filter, a liquid filter and a liquid level and temperature meter are mounted on the oil tank. The motors are arranged below the oil tank. The variable pumps are mounted at the front ends of the motors and connected with the oil tank through oil suction pipes. The valve block is mounted above the oil tank and connected with the variable pumps through oil outlet pipes. An inserting-type overflow valve, a plurality of direction cartridge valves and a plurality of two-position four-way reversing valves are mounted on the valve block. The heat exchanger is mounted on the rack. The upper end of the heat exchanger is connected with the valve block through a second oil return pipe. The lower end of the heat exchanger is connected with the liquid filter through a third oil return pipe. By the hydraulic system, the motors are prevented from burning out due to overload and allowed to start and stop frequently, so that system pressure and belt running speed are adjusted, and equipment service life is prolonged; the direction cartridge valve is adopted, so that running requirements of large mine belt conveyors are met.

Description

【Technical field】 [0001] The invention relates to the technical field of mechanical equipment, especially the technical field of hydraulic equipment. 【Background technique】 [0002] A belt conveyor is a friction driven machine that transports material in a continuous manner. It is mainly composed of frame, conveyor belt, idler roller, roller, tensioning device, belt conveyor mechanism and so on. It can form a material conveying process from the initial feeding point to the final unloading point on a certain conveying line. It can not only transport broken materials, but also transport finished items. In addition to pure material transportation, it can also cooperate with the requirements of the technological process in the production process of various industrial enterprises to form a rhythmic assembly line. [0003] The conveyor belt on the belt conveyor moves according to the principle of friction transmission. It is suitable for conveying powdery, granular, small-block...

AI Technical Summary

Problems solved by technology

[0004] However, most of the motors in the belt conveyors of the prior art are driven by a reducer, and then drive the belt to move, which often causes the motor to be overloaded and burn out, and frequent starting and braking equipment will also seriously affect the performance of the motor parts. performance, the service life of the equipment is short, and the belt generally conveys materials at a constant speed, and the running speed cannot be adjusted, and the reducer of the high-power belt conveyor needs to be arranged horizontally, which takes up a lot of space and is very inconvenient to install

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