After many years of improvement in the production process of the heat pump and our experience in the field of heat pump, we have summarized the following aspects: how to improve the quality of the heat pump and the main factors that restrict the product quality of the heat pump.

First. The selection of the seal of the heat transfer oil pump directly affects the service life of the heat transfer oil pump.

Heat oil seal is generally divided into the mechanical seal (including single mechanical seal, mechanical seal and combination container type bellows seal, packing seal (seal) graphite, carbon fiber packing) and skeleton (PTFE, PTFE oil seal skeleton power. When selecting the heat transfer oil pump seal, it should be selected according to the specific requirements of the customer. It can not only consider the needs of customers to meet the requirement of the temperature of the heat pump, but also consider the choice of the seal according to the customer's actual pipeline length, height, diameter and resistance.

Second. The temperature resistance and stability of the bearing of the heat conduction oil pump.

The speed of the heat conduction oil pump is high, and the general speed is 2900 revolutions / min. therefore, the high speed bearing must be selected for the bearing of the heat pump. In order to prevent the heat conduction of the heat pump when working at high temperature, the general heat conduction oil pump bearing adopts high temperature bearing. The specific brands of domestic heat conduction oil pump bearing are South Korea KBC, Japanese NSK and NTN and Sweden's SKF bearings. In the general small flow pump, each heat conduction oil pump will be equipped with a bearing on both ends of the shaft. Especially for the heat pump with large flow rate and high lift, two bearings must be assembled at both ends of the shaft, so as to ensure the stability of the main shaft of the heat pump pump under the action of large flow and large centrifugal force.

Third. The balance of the impeller of the heat conduction oil pump;

The aging reaction stage heat pump impeller must have enough long time before the assembly, after the aging reaction stage heat pump impeller can finish machining of the impeller, the processing must be static and dynamic balance test after passing to the assembly of heat pump heat pump impeller after (our company has special dynamic balancing machine). The disqualification of static balance or dynamic balance will cause large noise, large vibration and easy damage of bearing and seal after the operation of heat conduction oil pump.

Fourth. Better to improve the rationality of the processing technology, the highest to ensure the concentricity of the various parts.

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