The front plate of the centrifugal fans is generally a straight front plate, a tapered front plate and the arc front plate. From the perspective of the gas flow trajectory, the impeller of the front plate of the tablet does not meet the gas flow trajectory. The leaves at the outer diameter of the impeller are much larger than the leaves in the inner diameter of the leaf wheel. Therefore, not only the speed of air flow in the circulation of the leaves, but also the airflow in the leaf flow in the outer diameter of the impeller cannot be fully fully fully filled, which generates eddy currents and consumes power, resulting in a decrease in the efficiency of the fan. However, in the front -oriented impeller, in order to create simple and convenient, some types of ventilations still use this front disk. The gas flow trajectory of the cone front plate is better than the front plate, but the cross -section of the bastard in the leaves still cannot reach the equal or uniform spread of each part. Therefore, there is still leakage in the leaves of the leaves, which affects the improvement of the efficiency of the fan. Although the manufacturer has added a process than the front plate, it is relatively simple and convenient. The arc of the arc front plate is determined by the section or other diffusion section of the flow tract such as the flow road between the leaves. Therefore, the airflow is equivalent or decelerated in the Ye Dao, and there is no leakage in the leakage in the leak. Therefore, the impeller efficiency of the front plate is generally more efficient than the impeller of the front plate and the front plate of the cone -shaped front, but it is complicated than the previous two front plates.

However, from the economic point of view, for the batch of fans or large -scale fan, the use of the energy -saving technique of an extremely favorable centrifugal fans with an arc -shaped front disk is shared. At the same time, there must be a gap between the motion components and the fixed components, which makes the fluid has the possibility of leaking the fluid from a gap to the low -voltage area from the high -voltage area. Leakage and leakage loss. Let ’s talk about the reconstruction method of high -voltage centrifugal fans: due to the long time of the fan, the leaf wheels are worn, and the collector is rusty. No matter how we debug, Δ is between 10 and 12mm, and the air volume pressure is still difficult to achieve people. Satisfaction. The workload that uses physical methods to reduce the gap is too large. There are many parts that need to be replaced, or the machine is scrapped. This is not economical. We try to use chemical methods to reduce the gap, that is, fill the powerful universal glue JZ-AB in the gap Δ. This glue is high, water resistance, oil, acid, alkali, humidity and heat aging, wide temperature, non -toxic, non -flammable, long storage period, suitable for all kinds of gold, silver, copper, iron, aluminum, glass, etc. In terms of mechanical manufacturing, maintenance, agricultural machinery and furniture are widely used.

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