In the comprehensive mechanized coal mining production of coal mines, the power source of the hydraulic support is provided by the emulsion pumping station. The pumping station usually consists of two emulsion pumps and one emulsion tank, one for use and one for standby. In actual work, since the emulsion required in the hydraulic support of the working face is discontinuous, when the pumping station is opened, even if the pressure of the liquid supply system exceeds the set pressure of the valve (such as the hydraulic support stop liquid), the unloading valve In the action, the emulsion discharged from the pump is continuously sent directly to the emulsion tank, and a considerable portion of the energy is consumed in vain.
The purpose of the energy-saving control of the emulsion pump is to automatically stop the pump when the hydraulic support stops using the liquid. When the liquid is needed, the pump can automatically start below the set pressure, thereby saving energy, reducing pump wear and reducing consumption. Improve efficiency. The emulsion pump energy-saving control system is composed of an energy-saving controller, an electric contact pressure gauge and an explosion-proof casing. The energy-saving controller is a non-explosion-proof electrical device, so it must be installed in an explosion-proof electrical enclosure. It can use the existing 660V explosion-proof three-way junction box. The electric contact pressure gauge is also a non-explosion-proof electrical device. The power supply used is a 12V voltage output from the energy-saving controller, which is limited by a 10 kΩ resistor. They must be technically certified to meet the requirements of flameproof intrinsic safety and standards.
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