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Wittgen milling machine manual pump 124157

A manual pump is a type of pump that uses manual force. A one-way manual oil pump is a small hydraulic pump station that converts manual mechanical energy into hydraulic energy. When using matching oil cylinders and special tools, various operations can be carried out, such as lifting, bending, straightening, shearing, riveting, assembly, dismantling, and some construction and military construction.

At present, most manual pumps adopt a dual plunger design, with a low pressure output of large flow rate and a high pressure output of small flow rate. However, when the pressure pump is at high pressure output, the flow rate is too small and the work efficiency is low. Taking the mining manual pump product as an example, the specific parameters are as follows: rated pressure (high-pressure pressure) 63 MPa; Rated output flow rate 1.5mL/time; Low pressure output pressure 5-10MPa; Low pressure theoretical flow rate 12mL/time; Hydraulic oil tank capacity 2L; The maximum handle force shall not exceed 350N, with a high-pressure plunger diameter of 10.5mm and a low-pressure plunger diameter of 28mm. Between 10 and 20 MPa of pressure, the handle force of the manual pump is only 45 to 90 N, far lower than the specified 350 N, and its efficiency is less than 30% of the rated efficiency.

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