Hydraulic support emulsified oil can effectively protect the hydraulic system of equipment, prolong the service life of equipment, no pungent smell, is a kind of environmental protection products, widely used in all walks of life, especially in the coal mine industry, because coal mine work is a special work, so the hydraulic support emulsified oil requirements are high, the main requirements are as follows:
First, safety: hydraulic support is installed on the mining working surface of mechanical equipment. Due to the spontaneous combustion of coal under certain conditions, coal open fire, electric ignition and other reasons may cause the coal face and the nearby roadway fire, even explosion. Therefore, the emulsified oil of hydraulic support can neither be ignited nor ignited to ensure the safety of mine production
Two, economic: the number of hydraulic supports for a comprehensive mining face is often as high as 100-150. Due to the joint and sealing points, the pump station uses a higher output pressure, so that the support has enough initial support, the pipeline may be damaged by gangue leakage, the transmission medium needs to be cleaned, not only a wide source, and the emulsifying oil of the hydraulic support is cheap
Three, rust prevention lubrication: underground working face hydraulic support is composed of a large number of metal parts, high load, long cycle, hydraulic support emulsion oil must have a certain rust prevention lubrication.
Four, viscosity and viscositytemperature performance: comprehensive mining face hydraulic support pipeline is more and longer, the pump station is generally set in the trough. In order to reduce the energy loss of friction in the transmission medium, emulsified oil with high viscosity hydraulic support should not be used.
Five, the adaptability of sealing materials: In order to ensure the good working performance of hydraulic support, in addition to reasonable design and processing accuracy, also depends on the adaptability of hydraulic support emulsion oil to sealing materials, that is, sealing materials will not excessive shrinkage and expansion, resulting in sealing failure or action failure.
Six, no pollution to the environment: due to the large use of hydraulic medium, direct discharge, no purification equipment, hydraulic support emulsified oil pollution to groundwater resources is small or no pollution
