Every pump must be properly maintained during its use, which can prolong life. Attention should be paid to the maintenance of the insulation pump. When repairing, we should pay attention to the connection of the motor and do not connect it. Otherwise, it will reverse the normal gear pump suction direction. Gear pumps are usually designed to be reversible and generally do not allow inversion. This is either because the suction or discharge is different, or the unloading groove is asymmetrical design, and some of them are because the insulation pump has a safety valve or a lubricating bearing's unloading path according to the prescribed suction and discharge direction. The heat pump and the motor should be kept well in coupling nonconcentricity using a 0.05mm. Because of the bending deformation of the pump shaft, it is best to use the Rao connection. The matters needing attention during pump starting is that the insulation pump has the ability of self absorption, but the surface of the friction parts must have oil before starting, otherwise it will not only decrease its self absorption ability, but also will suffer serious wear in the short time. The new insulation pump should be filled with oil before it is first used. The dismantled insulation pump is filled with oil in gear. Attention should be paid to the operation of the slurry pump and the heat pump pump: it is not suitable to exceed the rated discharge pressure, otherwise it will overload the prime mover, overload the bearing, and make the working parts deform, wear and leak increase, and even cause blockage. Attention to the use of the pump: to prevent low inhalation pressure and inhalation of air. When the vacuum degree of suction is increased, the amount of gas in the oil increases and the volume efficiency will decrease. If the vacuum degree of suction is greater than that of absorbing the vacuum degree, &ldquo will be produced; the cavitation phenomenon is ” The saturated vapor pressure of the oil without light fraction is very low in the working temperature range, and does not vaporize under the usual suction pressure. But mineral oil dissolves 6% to 12% of the air at atmospheric and atmospheric pressure. When the pressure is lower than a certain value, the gas dissolved in oil will escape a lot. The pressure is called air separation. It varies with the type of liquid and the amount of air dissolved. When the temperature is high, the air separation pressure is also high. When the suction pressure is lower than the air separation pressure, oil will precipitate many bubbles in the low pressure area, the flow is reduced; when the bubble with oil to the high pressure area, air to dissolve the oil, the formation of partial vacuum, high pressure oil will flow around at high speed over fill, hydraulic shock, accompanied by intense noise, &ldquo cavitation; ”. It is also necessary to prevent air from inhaling. Inhaling air will not only reduce the flow rate, but also cause the main cause of the noise of the heat preservation pump. In addition to maintaining a sufficient height of the suction oil surface, the leakage of the suction pipe should also be prevented. If the noise of the pump is very noisy, the oil can be checked at the interface of the suction pipe.

• Print
• Close This Page
• Recommendation：
• 
• Browse：