The working principle of the hydraulic drive system of waste paper baler
Detailed explanation of the hydraulic system of the waste paper baler, how should the pressure be adjusted? To make the waste paper baler work in accordance with the requirements of hydraulic adjustment force, the corresponding hydraulic valve must be set to control the movement direction, speed and output of the hydraulic cylinder of the waste paper baler. Below, analyze the working principle of the hydraulic drive of the waste paper baler for you.
The movement direction of the hydraulic cylinder is controlled by the reversing valve. The pressure oil output from the hydraulic pump of the waste paper baler enters the lower cavity of the hydraulic cylinder through the ring groove on the left side of the throttle valve and the reversing valve spool along the pipeline. Under the action of the pressure oil of the waste paper baler, the piston moves upward and the pushing mechanism realizes the lifting action. At this time, the oil discharged from the upper cavity of the hydraulic cylinder flows back to the oil tank through the ring groove and pipeline on the right side of the valve core of the reversing valve. The movement speed of the hydraulic cylinder is controlled by a throttle valve. The pressure oil output by the hydraulic pump of the waste paper baler flows through the one-way valve and is divided into two paths, one through the throttle valve to the hydraulic cylinder, and the other through the overflow valve back to the tank. The throttle valve is like a faucet. By twisting the valve core and changing the size of its opening, the flow of oil into the hydraulic cylinder through the throttle valve can be changed to control the lifting speed. The output of the hydraulic cylinder is controlled by the overflow valve. Adjusting the pressing force of the spring in the overflow valve can control the pressure of the oil output from the hydraulic pump of the waste paper baler.
The pressure determines the carrying capacity of the waste paper baler. When the lifted external load exceeds the carrying capacity set by the overflow valve, the oil pressure reaches the pressure of the hydraulic pump. At this time, the hydraulic force acting on the steel ball pushes the steel ball open, and the waste paper baler presses oil. It flows directly back to the tank through the overflow valve and the oil return pipe, and the oil pressure will not continue to rise. Therefore, the overflow valve also plays the role of overload protection for the system here. The oil sucked by the hydraulic pump of the waste paper baler from the oil tank is filtered by the oil filter to remove impurities and dirt to protect the valves in the system from being blocked. Most of the power of the waste paper baler is provided by the hydraulic pump, so the standard for the pressure of the hydraulic pump is strict.