The screw air compressor is said to have never changed its displacement because its pair of rotors will never touch, unlike the piston air compressor. The above is also true, because a screw air compressor is only produced, in the standard environment, all parameters will not change after leaving the factory, but we can also slightly change its settings by changing some of its settings and environment. The amount of exhaust. leakage. Screw air compressor There is no contact between the rotors and between the rotor and the casing during operation, and there is a certain gap, so gas leakage occurs. When the gas after the pressure rises leaks through the gap to the suction duct and the inhaled shaft, the amount of exhaust gas is reduced. In order to reduce the leakage amount, the tooth tip of the driven rotor is provided with a sealing tooth, the tooth root of the active rotor is provided with a sealing groove, and the end surface is also processed with an annular or strip-shaped sealing tooth. If these seal lines are worn, the amount of leakage will increase and the amount of exhaust will decrease; the state of inhalation. The screw air compressor is a positive displacement compressor with the same suction volume. When the suction temperature rises, or the suction line resistance is too large to reduce the suction pressure, the density of the gas decreases, correspondingly reducing the amount of gas exhausted; cooling effect. The temperature of the gas increases during the compression process, and the temperature of the rotor and the casing also rises accordingly. Therefore, during the suction process, the gas is heated by the heating of the rotor and the casing, thereby correspondingly reducing the amount of suction. Spiral air compressors Some of the rotors use oil cooling, one of which is to reduce their temperature. When the cooling effect is not good, the temperature will increase and the exhaust volume will decrease; The displacement of emptypress is proportional to the speed. The speed often varies with the voltage and frequency of the grid. When the voltage is reduced (for asynchronous motors) or the frequency is reduced, the speed will drop, reducing the amount of gas. Some very simple methods, in fact, the impact on the displacement of the screw air compressor is very small, as long as you understand it.
First, the coarse filter filter 1, the core of the filter is the filter core, the filter core is composed of filter frame and stainless steel wire mesh, stainless steel wire mesh is a suitable part, special protection is required. 2. When the filter works for a period of time, certain impurities are precipitated in the filter core. At this time, the pressure drop increases, the flow rate will decrease, and the impurities in the filter core should be removed in time; 3. When cleaning impurities, pay special attention to filtration. The stainless steel wire mesh on the core can not be deformed or damaged. Otherwise, the filter will be installed again. The purity of the medium after filtration will not meet the design requirements, and the compressor, pump, instrument and other equipment will be damaged. 4. If stainless steel wire is found If the net is deformed or damaged, it needs to be replaced immediately.
Second, the precision filter 1, the core of the precision filter is the filter element, the filter core is composed of special materials, is a suitable part, need special protection; 2, when the precision filter works for a period of time, filter The filter element blocks a certain amount of impurities. At this time, the pressure drop increases, the flow rate will decrease, and the impurities in the filter should be removed in time, and the filter element should be cleaned at the same time. 3. When removing impurities, pay special attention to the precision filter element, and must not be deformed or Damaged, otherwise, the filter element installed again, the purity of the medium after filtration does not meet the design requirements; 4. Some precision filter elements can not be used repeatedly, such as bag filter, polypropylene filter, etc. 5. If the filter element is found to be deformed or Damaged, need to be replaced immediately.
This article is edited by China DSNEAIR Compressor Manufactory (https://air-compressor.net). Please indicate.