“Xiao Cao, the vacuum pump contactor went on strike again and needed to be repaired immediately!†Cao Chunyang, a technician from the Electrical Inspection Center of the Hebei Iron and Steel Tangshan Steel Power Department, who was in a meeting, received a phone call from Zhang Kangfeng, the head of the 1700 pumping station, and he arrived hurriedly. Production site. After removing the old contactor, replacing the new contactor, and commissioning the operation... After more than one hour of hustle and bustle, the production returned to normal. But at this time, Cao Chunyang was not happy at all. This is the 6th strike of the contactor in the past two months. It costs more than 3,000 yuan each time a new contactor is replaced. "No! I must reverse this 'firefighter' role." Cao Chunyang secretly determined. ■Supply pump “stabbing†often “strikes†Earlier this year, nine energy-saving water supply pumps were installed in the 1700 water supply pumping station cyclone wells of the water supply plant of the Ministry of Water Resources, and nine vacuum pumps were installed to remove the gas from the energy-saving pumps so that the pumps could be started quickly. But for unknown reasons, for a period of time, the contactor used to switch on and off the vacuum pump circuit has often been damaged due to frequent actions. At the same time, accidents that have caused the vacuum pump motor to burn out have occurred, directly affecting the normal operation of the water supply pump. “Where is the root cause of frequent contactor action?†For several days, Cao Chunyang had time to research the drawings and monitor the entire water supply circuit component operating data at the site. Three days later, Cao Chunyang finally discovered that the root of the problem came from the pump's "brain" - swirl well level switch! ■In addition to chronic diseases for "brain" surgery The so-called swirling-well liquid level switch is the "brain" of the water pump because the start-stop of the water supply pump is controlled by the automatic opening or closing of the liquid level switch to control the opening and closing of the vacuum pump contactor. However, due to the large amount of grease and impurities contained in the 1700 rolling mill production line, the positive and negative poles of the liquid level switch located at both ends of the insulation tube were electrically connected under the action of the oil and impurities that adhered to the insulation tube, and a malfunction occurred. A series of malfunctions such as vacuum pump contactors. How to fundamentally eliminate this phenomenon? After careful consideration, Cao Chunyang decided to “self-reliant†and “operate†for the level switch. "Only the positive and negative electrodes that used to be like the twin brothers were completely separated from the two ends of the insulating tube to make them 'like strangers' in order to avoid connecting power." Cao Chunyang got a used stainless steel bolt from the warehouse, in the switch Re-drill the hole 100mm below the anode and move the anode down to this position. Because the positive and negative electrodes are completely cut off, the power generation caused by oil contamination is eliminated. Cao Chunyang is pleased that since the completion of the "surgery", the level switch has not been mis-operated anymore, and the vacuum pump contactor is no longer a "strike", not only repairing the contactor has become a "past tense", but also a year Save 200,000 yuan for spare parts and maintenance costs for the company. More vacuum pump information is available at China Vacuum Pump Trading Network (/). Eoe Machinery,Eoe Conversion Presses,Eoe Production Line,Eoe Lid Making Machine Golden Eagle , https://www.goldeneaglecanmachinery.com