Centrifugal hot oil pump shaft with a stuffing box at the front end, the sealing performance is more reliable, at the same time in the bearing seat is provided with a mechanical seal, so a large number of leaks can not occur, and a small amount of leakage can leak through the spout to receive. 1, a small amount of leakage in the early start of operation is normal, after a certain period of running on the seal surface leakage will be reduced or stopped. 2, the transmission medium to the heat pump centrifugal pump cover and bearing the heat from the pump cover and bearing surface cooling, so that the bearing temperature to adapt to the shaft sealing performance temperature. Therefore, the choice of centrifugal hot oil pump installation location, to make the pump cover and bearing seat of the heat for easy proliferation, does not appear any heat storage. 3, the bearing seat is provided with two ball bearings, centrifugal pump by centrifugal pump impeller side of a ball bearing with the heat transfer oil lubrication, by the coupling side of a ball bearing is lubricated with high temperature grease: Each After a ball bearing is operated for 3000 hours, it must be dismantled and cleaned with diesel oil. Check if the contact surface is damaged. If it is damaged, it must be replaced with a new one. When mounted on the impeller-side ball bearing, the dust-proof cover must be mounted on the side facing the impeller and lubricated with heat-conducting oil before starting up. On the coupling side of the ball bearings, the use of complex calcium-based high-temperature grease (ZFG-4), the re-install the bearing, with dust cover side also toward the impeller side installation, install grease (about 1 / 2 ball bearing and housing space). After 48 hours of operation, use a grease gun to inject replenishment grease into the pressure cup on the bearing cap. 4, Centrifugal heat pump should not be less than 30% of the design flow continuous operation, if you must operate under the conditions, it should be installed in the bypass bypass pipe, and to flow above the minimum. 5, often check the loose bolts of the ground conditions, centrifugal heat pump casing temperature and inlet temperature are the same, the export pressure gauge fluctuations and pump vibration. 6, pay attention to the operation of centrifugal hot oil pump no noise, if found normal state, should be promptly processed. 7, downtime: cut off the power. The centrifugal hot oil pump liquid venting, cleaning and the impeller should be rotated 180 degrees regularly to prevent shaft deformation until the pump is completely cooled so far.
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