Internal clearance, operation and characteristics of Roots vacuum pump
once Roots vacuum pump If there is a gap in the internal parts of the equipment, not only the parts will become loose, but also the debris deposition and blockage will occur, which will lead to the equipment reducing its working efficiency and increasing its loss rate. Therefore, when there is a gap between the equipment, it must be adjusted in time to keep the equipment in good installation state.
1、 Clearance adjustment
Roots vacuum pump It is not convenient to measure the radial clearance directly by adjusting the radial clearance and axial clearance. However, you can listen to the friction between the rotor and the housing after running at the rated speed or higher speed for a certain period of time. When adjusting, you can loosen the connecting screws at both ends of the cover and pull out the pins. Use the end cap for adjustment. After adjustment, hinge the locating pin holes of the end cover and pump housing together, reposition the locating pins, and then tighten all screws first.
To adjust the meshing clearance of the rotor is essentially to adjust the synchronous gear, that is, pull out the tapered pin on the driven gear gear, and then loosen the screw in the waist groove, slowly rotate the driven rotor, rotate the side to maintain the clearance between the two rotors until the adjustment meets the requirements, then tighten the screw in the waist hole, re articulate the pin hole, and then install the positioning pin The clearance between the sub end face and the left and right end covers. The gap can be adjusted by grinding the thickness of the adjusting pad and the thickness of the end sealing paper gasket.
2. Operation method:
When low wind pressure and high current occur. The main reason is that it can not be cleaned in time Roots vacuum pump Dust on the inlet filter. Remove the filter carefully and solve the problem. This requires us to always clean the filter screen in normal use to ensure that Roots vacuum pump It is not only beneficial to the operation of the equipment, but also does not affect the calcination. Roots vacuum pump The collision between impeller and impeller: gear tooth displacement; the elimination method is to adjust the clearance and tighten. The cause of overpressure is to check after operation. The wear of the tooth surface will lead to the increase of the backlash, which will lead to the change of the clearance between the impellers. The elimination method is to adjust the clearance. Roots vacuum pump If the machine is in the state of lack of oil or insufficient oil, the bearing will be affected and damaged, and then there will be corresponding vibration and noise increase. We should pay attention to careful observation at ordinary times.
3、 Main features
Roots vacuum pump There is a certain clearance between the rotor and the pump chamber, and there is no contact between the rotor and the rotor, and there is no need for oil lubrication. The rotor has good geometric symmetry, which can improve the speed, so it can be used to manufacture large pump with compact structure. The vibration of the pump is small, the volume is large, and the volume utilization rate is about 0,5. Like the mechanical vacuum pump, there is no compression phenomenon in the pump cavity, so there is no need for exhaust valve. Therefore, condensable steam can be removed. Fast start, can reach the limit vacuum in a short time. Low power consumption and low maintenance cost. Roots vacuum pump The unit has a large pumping speed in a wide pressure range (1kpa-100kpa), which can quickly discharge the suddenly released gas, making up for the pumping speed of diffusion pump and oil seal mechanical pump. Minor defects. Therefore, it is suitable for use as booster pump.
Internal clearance, operation and characteristics of Roots vacuum pump: http://theoxfordjazz.com/xw/92.html
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