A few days ago, Hunchun Mining Group Company Ellin City coal mine workers developed their own "pneumatic pump automatic control switch," and put into production use. Ealing coal mine power plant workers in the production found that the original downhole water tank used by manufacturers to provide pneumatic automatic control device, cylinder fittings are made of copper material, high cost, and due to narrow cylinder air gap, the float is not applied Sensitive, encountered in the wind pipe rust or debris, easy to plug and affect homework. For the development of "inexpensive" pneumatic automatic control device, Yang Zhiguo and other workers in the workshop according to the original supply of parts of the original principle, the use of scrapped fire extinguishers shell and discarded two-way lock cylinder were made of floating ball and pneumatic Cylinder. After repeated tests and improvements, "pneumatic pump automatic control switch" finally developed a successful trial. After the detection of the relevant departments, Yang Guozhi and other developed "pneumatic pump automatic control switch," the cost of less than 10% of the original product, function and safety performance is no less, but also saves manual manual pumping of water, by colleagues Universal praise. At present, Yang Guozhi and others are using their spare time to step up their production of "pneumatic pump automatic control switch" to meet the transport, electromechanical, excavation and other production needs of local water storage.
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