How to Adjust the Blade of Double Impeller Vortex Fan
Now more and more industries are using double impeller vortex air pumps, especially some industries that require high flow and opening height. Generally, a certain electric control valve is selected, which can be adjusted according to the needs of the working environment of various industries.
Due to the blowing and sucking effect of the double impeller vortex air pump, there are many papers stored in the printing house for a long time. At this time, the suction and pressure of the vortex air pump can be used for processing. At the same time, the vortex air pump can also collect and transport the separated paper well. There are also some industries that use the suction of scroll air pump to suck the film, which can ensure the flatness of the film and ensure good results. In the textile industry, the dust on the cloth can be sucked by the suction of the vortex air pump, and the cotton yarn can be tightened.
In the mechanical industry, the stable suction of vortex air pump can absorb the gas in thin parts and machine workbench. The double impeller vortex air pump ensures that the mechanical parts can be used well together. It is particularly important to note that even the iron filings on the grinder can be sucked clean by vacuum.
Pressure adjustment of double impeller vortex air pump;
1, change the valve opening.
Change the diameter of outlet cross section of vortex air pump. When the diameter of cross-sectional area decreases, the local resistance of the pipeline increases, the characteristic curve of the pipeline becomes steep, the working point moves from m to M 1, and the flow rate decreases from QM to QM 1. On the contrary, when the cross-sectional area of the inlet and outlet increases, the pipeline resistance decreases, the pipeline characteristic curve flattens, the resistance decreases, and the flow rate increases accordingly.
2. Change the rotational speed of vortex air pump.
Changing the rotating speed of the scroll air pump is essentially changing the characteristic curve of the pump. The original rotational speed of the vortex air pump is n, and the working point is m. If the rotational speed of the vortex air pump increases to n 1, the characteristic curve H-Q of the vortex air pump moves up, the working point moves from m to M 1, and the flow rate increases from QM to QM 1. If the rotational speed of the vortex air pump is reduced to n2, the working point is moved to M2, and the flow rate is reduced to QM2.
Then the main control parameters of the electronic control valve are: nominal diameter, design nominal pressure, allowable temperature range of medium, flow coefficient and so on. However, the key to the quality of electronic control valve depends on the sealing performance of electronic control valve. However, the sealing performance of the valve is mainly divided into two aspects, one is internal leakage and the other is external leakage, so we must pay attention to the sealing performance when choosing the electric regulating valve. In addition, environmental protection, energy saving and convenient installation and maintenance should also be considered when selecting the electric control valve, which can bring great convenience to the follow-up work.
In addition, if the fan vibrates during operation, it can be eliminated from the following aspects;
1. The pressure of vortex air pump is high. A. Wrong selection of vortex air pump (air volume is too small). B. the pipeline is blocked. Remove the outlet of vortex air pump, clean up the stolen goods in the pipeline, and check whether the aeration head is blocked. If it is blocked, please replace it. C. air chamber (oil-gas separation tank) is blocked. Please disassemble the outlet (opening) of the vortex air pump for debugging. If the pressure of the scroll air pump does not drop to 0MPA, the air chamber is blocked, so it is necessary to disassemble and check the air chamber, otherwise the pipeline needs to be checked.
2. If the bearing of the vortex air pump or motor is damaged, remove the vortex air pump or replace the motor.
3. The interior of the double impeller vortex air pump is damaged. A. Stolen goods may enter the vortex air pump.
4, vortex air pump water rust, disassembly and repair.
5. The muffler design of vortex gas pump house is poor.