Adopting advanced and reasonable NC machining technology and NC programming method is an important condition to ensure the machining quality of blade profile. This paper studies the general method of computer aided NC programming and the technical points of impeller NC planing. Appropriate clearance is set between rotors and between rotors and shell wheels. During operation, no lubrication treatment is required for each other and mechanical parts are contacted. The timing gear engagement mode is adopted, and the shell wheel (rotor action chamber) is separated by gasoline on the side cover, so there is no risk of lubricating oil mixing. Therefore, the gas emitted is clean air without oil content. Even under long-term operation, it can be used safely. Arc, involute and cycloid are three basic blade profiles of Roots blower impeller. Firstly, the profile equations of three basic blade profiles are analyzed, and the selection of diametral distance ratio and the calculation of area utilization coefficient are theoretically analyzed.
Due to the adoption of a three blade rotor structure and a reasonable structure at the inlet and outlet of the housing, the fan has low vibration and noise. The impeller and shaft are of integral structure, and the impeller is free of wear. The performance of the fan is permanent and can operate continuously for a long time. Generally, a vent valve is installed to vent the unused air. If the valves are turned down, the temperature of the fan motor will rise too high, which will burn the motor. Roots blower has low noise. The spiral structure is adopted at the inlet and outlet of the fan, so that the inlet and exhaust of the fan will gradually proceed with the rotation of the rotor, avoiding the pulsation and noise caused by the instantaneous opening and closing of the old roots blower. Therefore, the roots blower operates stably and has low noise. The silencer matched with Roots blower products adopts advanced sound absorption materials and special structure, which also effectively reduces the noise of Roots blower. It is necessary to analyze the requirements of the process for air: whether it is constant flow air supply or constant pressure air supply, how strict the process is to these parameters, and how serious the consequences are once these parameters are damaged.
Roots Blower There is too much oil in the oil tank, which is too thick and dirty; Its filter is blocked; The pressure is higher than the specified value; The impeller is excessively worn with large clearance; Poor ventilation and high indoor temperature lead to high inlet temperature; The running speed is too low, and the belt slips. It is necessary to reduce the oil level or entrainment, remove the blockage, and reduce the differential pressure Roots blower by the following methods:; Repair the gap, open the vent, and reduce the room temperature; Increase the rotating speed to prevent the belt from slipping. There are proper clearances between rotors and between rotors and casings of Roots blower, and no lubrication or mechanical contact is required during operation. The timing gear mesh mode is adopted, and the housing wheel (rotor chamber) is located on the side. Gasoline is separated from engine oil, so there is no danger of mixing lubricants. Therefore, the discharged gas is clean air without oil, so it can be safely used even if it is used for a long time. Arc, involute and cycloid are three basic types of Roots blower impeller.
The inlet and outlet of the fan adopt a spiral structure, so that the suction and discharge of the fan gradually proceed with the rotation of the rotor, avoiding the pulsation and noise caused by the immediate opening and closing of the spherical roots blower. Low noise. As a supporting product of Roots blower, the silencer adopts high-quality sound absorber and special structure, which can effectively reduce the noise of Roots blower. Roots blower runs smoothly without vibration.
Roots blower adopts advanced special machining center for impeller machining to make the meshing clearance of rotor even and balanced. After more accurate and dynamic balance experiments, it ensures that the operation of roots blower is almost vibration free. Roots blower can also be used to transport gas, hydrogen, acetylene, carbon dioxide and other flammable, explosive and corrosive gases.
The fan has low vibration and low noise, because the blade structure and the air inlet of the shell adopt reasonable structure. The impeller is integrated with the shaft, the impeller is free of wear, the fan performance is stable, and it can work continuously for a long time. Usually, an exhaust valve is installed to release unused gas. If the valve is very small, the motor temperature of the fan may be so high that the motor may burn out.
Roots blower has low noise. The spiral structure is adopted at the air inlet and outlet of the fan, so that the air inlet and exhaust of the fan will gradually proceed with the rotation of the rotor, avoiding the pulsation and noise caused by the instantaneous opening and closing of the old roots blower. Therefore, the roots blower operates stably and has low noise. The silencer matched with Roots blower products adopts advanced sound absorption materials and special structure, which also effectively reduces the noise of Roots blower. It is necessary to analyze the requirements of the process for air: whether it is constant flow air supply or constant pressure air supply, how strict the process is to these parameters, and how serious the consequences are once these parameters are damaged.
