A dual-drive spindle control system for an oil-free dry vacuum pump

Abstract

The invention discloses an oil-free dry vacuum pump double-driving main shaft control system. The oil-free dry vacuum pump double-driving main shaft control system comprises a double-shaft oil-free vacuum pump mechanical part and a motor control part. Each one of shafts of a double-shaft oil-free vacuum pump is provided with a motor, a positioning gear and an encoder. The motor control part comprises an alternating-current converter, a human-computer interface and a CPU unit. Through accuracy control based on the oil-free dry vacuum pump double-driving main shaft control system, position synchronization of the two main shafts of the double-shaft oil-free vacuum pump is kept. Simultaneously, the oil-free dry vacuum pump double-driving main shaft control system realizes display of a rotation speed, rotation moment, instantaneous power and fault information of dry vacuum pump operation. Compared with the traditional dry vacuum pump control system, the oil-free dry vacuum pump double-driving main shaft control system reduces original gear and shaft seal machining precision, reduces a lubricating oil use amount thereby reducing a production cost, and improves a complete-machine service life by more than 1 times.

Description

technical field [0001] The invention relates to the field of obtaining oil-free vacuum, in particular to a dual-drive spindle control system for an oil-free dry vacuum pump. Background technique [0002] At present, the drive of the double-shaft oil-free vacuum pump adopts one shaft as the driving shaft and the other as the driven shaft. Two transmission gears with a transmission ratio of 1:1 are installed between the driving shaft and the driven shaft. Only one AC asynchronous motor is installed on the driving shaft, and the other shaft is transmitted by the gear, which causes the oil-free vacuum pump to work loudly. The wear loss is large, which directly affects the life of the oil-free vacuum pump. In addition, transmission gears require extremely high machining accuracy and gear lubricants, which increases the cost of gear processing and makes it difficult to control the cost of gear lubricants, which in turn affects the improvement of the overall cost performance of th...

AI Technical Summary

Problems solved by technology

Two transmission gears with a transmission ratio of 1:1 are installed between the driving shaft and the driven shaft. Only one AC asynchronous motor is installed on the driving shaft, and the other shaft is transmitted by the gear, which causes the oil-free vacuum pump to work loudly. The wear loss is large, which directly affects the life of the oil-free vacuum pump

In addition, the transmission gear requires extremely high machining accuracy and gear lubricant, which increases the cost of gear processing and the cost of gear lubricant is difficult to control, which in turn affects the improvement of the overall cost performance of the pump.

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