When measuring the pressure of the centrifugal fan of the grinder, the pitot tube is used in combination with various pressure gauges. The role of the pitot tube is to receive and transmit the pressure of the air stream, and the manometer indicates the value of the pressure being transmitted. At present, the commonly used pressure gauges are U-type pressure gauges and inclined pressure gauges. Can be made of copper, stainless steel pipe and other materials. The pitot tube has two paths. One is to leave a small hole in the center of the end, which is measured against the air flow to receive the total pressure. The other left several small holes on the side wall, and the hole was vertical thousands of air flow and received static pressure when measured. The pressure difference between the two pressure gauges is the dynamic pressure at the point (i.e. the velocity head).
The stopper bar part is fixed on a spindle with the centrifugal vane part and the hammer rotor part of the crusher. In order to pull the pin from the baffle plate and end plate of the hammer rotor, and facilitate the installation and maintenance of the hammer handle, the stopper rod and the hammer rotor part have a 60 intersection Angle and a 30 intersection Angle with the centrifugal blade.
There is a conical shell fixed to the housing on the outside of the stopper bar. The conical shell acts as a flow collector for the centrifugal fan to ensure smooth airflow from the hammer rotor cavity into the centrifugal fan cavity. In addition, by adjusting the gap between the stopper bar and the conical shell, the particle size of the material can be controlled to prevent large materials from collapsing into the centrifugal fan cavity. This not only reduces the negative effect caused by axial flow blades, but also overcomes the defect of coarser particle size after removing axial flow blades.
The use of the mill is inseparable from the centrifugal fan, in the use of the mill, if you want to make the material successful away, you must have the appropriate wind pressure, wind speed and air volume, so that the pipeline can be smooth, will not cause blockage. Therefore, it is necessary to determine the wind pressure, wind speed and air volume of the mill.
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