First, the transmission medium to the heat pump oil pump cover and bearing the heat from the pump cover and bearing surface cooling, so that the temperature of the bearing seat to adapt to the shaft sealing performance temperature.Therefore, the choice of conducting oil pump installation position, to So that the pump cover and bearing seat of the heat is easy to spread, does not appear any heat storage phenomenon. This article Keywords: pump
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Second, hot oil pump shaft in the front end with a stuffing box, the sealing performance is more reliable, while 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. It is normal to have a small amount of leakage early in operation, and the leakage will decrease or stop after the sealing surface has run through a certain period of time.
Third, the bearing seat is provided with two ball bearings, by the heat pump 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 ball Bearing 3000 hours after operation, you must remove the clean with diesel oil, check the contact surface is damaged, if damaged, you must replace the bearings on the side of the impeller-side ball bearings installed, the side of the dust cover should be facing Impeller installation, before the boot into the thermal oil lubrication.Coupled by the side of the ball bearings, with complex calcium-based high-temperature grease (ZFG-4), the reassembly of the bearing, the dust cover side also toward the impeller side Grease (about 1/2 ball bearing to housing space) during installation and installation. After 48 hours of operation, apply grease to the pressure cup on the bearing cap with a grease gun.
Shut down: Turn off the power, drain the liquid in the heat transfer oil pump, and rotate the impeller 180 degrees periodically to prevent the shaft from deforming till the oil pump is completely cooled.
Fifth, the heat transfer oil 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.
Sixth, often check the loose bolts of the situation, the heat pump oil pump casing temperature and inlet temperature are the same, the export pressure gauge fluctuations and pump vibration.
Seven, pay attention to whether there is no noise in the operation of the heat transfer oil pump, if it is found that the normal state, should be promptly processed.
Heat transfer oil pump technology is advanced, high efficiency, long-term stable operation in the hot state no leakage, no additional cooling system, the use of safe and reliable and other features in China heating medium heating system has been widely used, has entered the petroleum, chemical, It is mainly used for conveying weakly corrosive high temperature liquid without solid particles. It is an ideal hot oil circulation pump with the working temperature ≤370 ℃.