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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

Inactive Publication Date: 2016-04-13
ELIVAC COMPANY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a magnetic seal structure for the drive end of the Roots pump to solve the problems of poor sealing performance, short service life, poor heat resistance or poor differential pressure resistance and poor vacuum stability of the existing mechanical seals. defects, while avoiding the high cost of using motor plug-in seals

Method used

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  • Magnetic sealing structure for drive end of roots pump
  • Magnetic sealing structure for drive end of roots pump

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0012] The picture includes:

[0013] 1- front cover,

[0014] 2-shaft sleeve,

[0015] 3- drive shaft,

[0016] 4- sealing ring,

[0017] 5- inner magnetic rotor,

[0018] 6 - sealing sleeve,

[0019] 7- Outer magnetic rotor,

[0020] 8 - Motor shaft.

[0021] The invention discloses a magnetic seal structure for the drive end of a Roots pump, which includes a magnetic drive, and 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 outer magnetic rotor 7 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 installed on the front end cover 1 , the static sealing structure is a ...

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Abstract

The invention discloses a magnetic sealing structure for a drive end of a roots pump. The magnetic sealing structure comprises a magnetic transmission device, and is characterized in that the magnetic transmission device comprises an inner magnetic rotor and an outer magnetic rotor; the inner magnetic rotor is connected with a drive shaft; the outer magnetic rotor is connected with a motor shaft; and a static sealing structure is arranged between the outer magnetic rotor and the inner magnetic rotor. According to the invention, a magnetic transmission technology is utilized, and dynamic sealing for the drive end is changed into static sealing, thus oil leakage and wear of the outer side of the drive end of the roots pump are solved; meanwhile, due to no friction, lubrication is not needed, and heat is avoided, and independent oil cup and cooling water are cancelled; and complete static sealing is achieved, thus the limit vacuum degree of the roots pump is further increased. The magnetic sealing structure is more economic compared with motor sealing in case of meeting the needs of customers, achieves the effect of motor sealing, and has both economical efficiency and practicability.

Description

technical field [0001] The present invention relates to the technical field of Roots pump driving end sealing, in particular to a magnetic sealing structure for the driving end of Roots pump, which can eradicate the leakage of air, process gas and vacuum lubricating oil inside and outside the pump body, and is a kind of Revolutionary advanced product. Background technique [0002] At present, the seal design of the drive end of the Roots pump generally adopts a skeleton oil seal, a mechanical seal or a plug-in motor full seal. [0003] The use of skeleton oil seals is to place two lip seals at both ends of a section of the drive shaft, and the middle is filled with lubricating oil. When the drive shaft rotates at high speed, the stationary lip seal uses the sealing lip that is in contact with the drive shaft. The sealing oil film formed with lubricating oil realizes the gap sealing between the rotating shaft and the static connection surface. Since the main material of the...

Claims

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Application Information

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IPC IPC(8): F04C27/00
Inventor 潇然荣易
Owner ELIVAC COMPANY
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