1. Problems existing in emulsified oil of hydraulic support itself (internal reasons)
When it comes to emulsified oil, most people will think of emulsified oil as milky white, on the contrary, if it is milky white in water, it is a very good emulsified oil. This view is quite incorrect. Appearance is milky white, only appearance phenomenon. The method of determining poor emulsified oil depends on internal quality. The current industry standard is MT76-2002.
The results show that one of the problems often encountered in the use of opalescent emulsified oil is oil analysis soap; Sticky flotsam and sediment. Greatly reduce the anti-rust and lubricating properties of emulsified oil. The reasons for this phenomenon are:
Opalescent emulsion oil is opalescent because the oil droplets in the oil droplets are large enough to prevent visible light from passing through. It is a physical optical phenomenon. Due to the large size of the oil droplets, in the strong impact vibration, the temperature rises, so that the oil droplets aggregate with each other, resulting in precipitation. Oil becomes sticky after precipitation, absorbing insoluble ash, dust and other impurities, forming sludge precipitation. The invention is also a soap base, which is generated by high price metal ions in water and some anionic surfactants.
To solve the above problems, a kind of emulsified oil with stable thermodynamic system is needed. The oil droplets of the emulsion in water are small, up to micron level. Nanoscale light transmittance is high, liquid distribution is translucent or transparent, non-opalescent. The emulsified oil surface can be well adapted to water quality of various hardness. Its emulsion (Note: emulsion oil prepared in water in a certain proportion is called emulsion) will not accumulate oil droplets when the strong impact oscillation, temperature rise, can not be analyzed on the oil soap, maintain excellent anti-rust performance. Lubricity and cleanliness. Can meet the requirements of mining support electrical control system.
2. Use hydraulic proppant (external causes)
Answer: The concentration of emulsified oil is too low: in order to reduce the production cost or labor intensity, some users or teams even fill the oil cylinder with water for a long time, causing the inner wall of the cylinder to rust. When lifting the support, the corroded cylinder head is pulled, resulting in support leakage, resulting in dangerous and major accidents.
B: Use concept problem: The emulsion oil used by people is milky white in water for a long time, which gives people a fixed thinking mode: emulsified oil is milky white in water, which is an excellent emulsified oil. Such thinking is dangerous. This is a low grade emulsifying oil in backward mining technology, it does play a role. However, due to its inherent defects, it is obviously not suitable for the modern coal mining industry using coal mining technology. Underground operators, especially coal miners, must keep up with The Times. In this case, the use of low-grade emulsified oil should not be considered, but should consider a combination of factors such as water quality and mining equipment. But the low level emulsion oil can not be used in the electric control hydraulic system of comprehensive mining hydraulic support.
C: The emulsified oil selected is of poor quality, poor stability, oily soap, emulsification and deterioration in summer. Cause latex latex can not be used normally, resulting in latex support damage.
