Unmanned submersible pump button switch

• Main Authors: ZHANG YONGJUN, YUAN ZHIQIANG, DUAN XUEWEI, GAO JIDONG
• Format: Patent
• Language: English
• Published: 22.04.2015
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

The utility model provides an unmanned submersible pump button switch which comprises a button switch. The button switch which is an intrinsically safe button is arranged on a bracket which is placed in a water pit of a coal mine underground transportation roadway and a working face. A convex ring is arranged at the end part of the casing body of the intrinsically safe button. The inside convex ring is hinged with a lever through a hinge shaft. A lever resistance arm is arranged in the ring. The top of the resistance arm contacts the column of the intrinsically safe button in a sliding manner. A power arm of the lever extends out of the ring. A push rod is arranged on the power arm. A floater is arranged on the lower end of the push rod. When the water level of the water pit of the coal mine underground transportation roadway and the working face rises, the floater drives the push rod to move upward. When the water level reaches the upper limit, the push rod drives the lever to rotate around the hinge shaft. The inner end of the lever pushes the column of the intrinsically safe button inward. The intrinsically safe button starts submersible pump delay pumping. When the water level reaches the lower limit, a submersible pump stops pumping.