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Hydraulic system of hydraulic press: A hydraulic press is a machine that uses a liquid body as a working medium and is made according to Pascal's principle to transfer energy to realize various processes. The hydraulic press is generally composed of the machine (host), power system and hydraulic control system. Hydraulic presses are classified into valve hydraulic presses, liquid body hydraulic presses, and engineering hydraulic presses. Hydraulic presses are a kind of machinery that uses liquid body static pressure to process metal, plastic, rubber, wood, powder and other products. It is often used in pressing and forming processes, such as: forging, stamping, cold extrusion, straightening, bending, flanging, sheet deep drawing, powder metallurgy, pressing and so on. Its principle is that there are many types of machinery made by using Pascal's law to use liquid pressure transmission. Of course, the use is also diverse according to needs. For example, according to the type of fluid that transmits pressure, there are two categories: hydraulic press and hydraulic press. Hydraulic system of hydraulic machine: The driving system of hydraulic machine mainly has two types: pump direct drive and pump-accumulator drive. The pump directly drives the drive system. The pump of the system supplies high-pressure working fluid to the hydraulic cylinder. The valve is used to change the direction of the liquid supply. The overflow valve is used to adjust the limited pressure of the system and at the same time play a role of safety overflow. This kind of drive system has few links and simple structure. The pressure can be automatically increased or decreased according to the required working force, reducing electric energy consumption, but the capacity of the pump and its driving motor must be determined by the maximum working force and maximum working speed of the hydraulic machine. This type of drive system is mostly used in small and medium hydraulic presses, but also large (such as 120,000 kN) automatic forging hydraulic presses directly driven by pumps. Pump-accumulator drive  There is one or a group of accumulators in this drive system. When the high-pressure working fluid supplied by the pump has a surplus, it is stored by the accumulator; when the supply is insufficient, it is supplemented by the accumulator. With this system, the capacity of the pump and the motor can be selected according to the average consumption of the high-pressure working fluid, but because the pressure of the working fluid is constant, the electric energy consumption is large, and the system has many links and the structure is more complicated. This kind of drive system is mostly used for large hydraulic presses, or a set of drive system drives several hydraulic presses.

Hydraulic press hydraulic power pack
Hydraulic press hydraulic power pack
Hydraulic press hydraulic power pack
Hydraulic press hydraulic power pack
Hydraulic press hydraulic power pack