Magnetic sealing structure for drive end of roots pump
A technology of magnetic sealing and driving end, applied in the sealing device of piston pump, pump element, machine/engine, etc., can solve the problems of high cost, poor heat resistance, short service life, etc., achieve both economy and practicability, improve The effect of ultimate vacuum
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[0011] The present invention will be further described below with reference to the drawings and embodiments.
[0012] The figure includes:
[0013] 1- Front end cover,
[0014] 2-shaft sleeve,
[0015] 3- drive shaft,
[0016] 4- sealing ring,
[0017] 5-Internal magnetic rotor,
[0018] 6-seal sleeve,
[0019] 7- External magnetic rotor,
[0020] 8- Motor shaft.
[0021] The present invention discloses a magnetic seal structure for the drive end of a Roots pump. It includes a magnetic drive. The magnetic drive is characterized in that the magnetic drive includes an inner magnetic rotor 5 and an outer magnetic rotor 7, and the inner magnetic rotor 5 and The drive shaft 3 is connected, the outer magnetic rotor 7 is connected with the motor shaft 8, and a static sealing structure is arranged between the outer magnetic rotor 7 and the inner magnetic rotor 5. The drive shaft 3 is mounted on the front end cover 1, the static sealing structure is a sealing sleeve 6 fixedly mounted on the front e...
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