Three-axis Roots vacuum pump
A Roots vacuum pump and spindle technology, applied to pumps, rotary piston pumps, rotary piston machinery, etc., can solve problems such as unstable operation and low pumping efficiency of vacuum pumps, and achieve improved dynamic balance performance, compact structure, and symmetrical effect
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example 1
[0018] Example 1. A three-axis Roots vacuum pump of the present invention, wherein the motor 1 is connected to the main shaft 3 through a coupling 2, the driving gear 4, the left driven gear 13 and the right driven gear 5 are respectively assembled on the main shaft 3 through a key connection , on the left driven shaft 12 and the right driven shaft 6, the three shafts are arranged in parallel, the middle main shaft 3 is driven by the motor 1, driven by the three synchronous gears, the three shafts rotate in opposite directions to each other, and the main shaft 3 , the left driven shaft 12 and the right driven shaft 6 are fixed with five-stage 4-lobe Roots rotors, and the Roots rotors are respectively fixed on the three shafts through key connections, the main shaft 3, the left driven shaft 12 and the right driven shaft The shaft shoulders at both ends of the shaft 6 are equipped with bearings. The upper bearing 17 is fixed on the upper bearing seat 21. The cavity inside the upp...
example 2
[0023] Example 2. Its structure, connection and working process are the same as in Embodiment 1, the difference is that the number of stages of the Roots rotor is 2, and the number of leaves is 6 leaves.
example 3
[0024] Example 3. Its working process is the same as that of Embodiment 1, except that the main shaft 3, the left driven shaft 12 and the right driven shaft 6 are arranged in a triangle.
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