Magnetic drive screw vacuum pump

A screw vacuum pump and magnetic drive technology, applied in pumps, machines/engines, rotary piston pumps, etc., can solve problems such as medium leakage, achieve the effects of motor protection, easy installation and use, and compact structure

Inactive Publication Date: 2013-05-15
SHENYANG SCI INSTR RES CENT CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of medium leakage in existing vacuum pumps, the object of the present invention is to provide a magnetic drive screw vacuum pump

Method used

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  • Magnetic drive screw vacuum pump

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] Such as figure 1 As shown, the present invention includes a cavity 1, a driving rotor 2, a driven rotor 3, a bearing housing 4, a gear box 5, a transmission gear set, an inner magnetic rotor 6, an outer magnetic rotor 7, an isolation sleeve 8 and a motor 10, wherein the active Both the rotor 2 and the driven rotor 3 are accommodated in the cavity 1, a bearing housing 4 is fixedly connected to the outer surface of one end of the cavity 1, a gearbox 5 is fixed to the outer surface of the other end, and the driving rotor shaft 11 And one end of the driven rotor shaft 12 passes through the cavity 1 and is installed in the bearing housing 4 through the bearing, and the other end passes through the cavity 1 and is connected through the transmission gear set located in the gearbox 5; the transmission gear set includes Driving gear 13 and driven gear 14, driv...

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Abstract

The invention relates to a vacuum pump in the field of vacuum, and in particular relates to a magnetic drive screw vacuum pump. The vacuum pump comprises a cavity, a driving rotor, a driven rotor, a transmission gear set, an inner magnetic rotor, and outer magnetic rotor, an isolation sleeve and a motor, wherein the driving rotor and the driven rotor are both accommodated in the cavity; a driving rotor shaft and a driven rotor shaft are connected through the transmission gear set; the inner magnetic rotor is arranged on the driving rotor shaft; the motor is mounted on the cavity, and the output end of the motor is provided with the outer magnetic rotor sleeved at the periphery of the inner magnetic rotor; the isolation sleeve for isolating the inside from the outside of the cavity is arranged between the inner magnetic rotor and the outer magnetic rotor; and the inner magnetic rotor and the outer magnetic rotor are respectively provided with a plurality of magnets corresponding to one other. According to the invention, the isolation sleeve is used to completely isolate media from the outside, so that the vacuum pump is more suitable for petroleum and chemical industries involving in transportation of toxic and harmful media and the like. The inner and outer magnetic rotors transfer torque through the magnetic action of the magnets, and the motor and the rotors can rotate asynchronously in the case of overload, so that the motor is protected.

Description

technical field [0001] The invention relates to a vacuum pump in the vacuum field, in particular to a magnetically driven screw vacuum pump. Background technique [0002] Due to its superior performance, screw vacuum pumps are widely used in microelectronics, pharmaceuticals, precision processing, papermaking, packaging and other industries, especially in semiconductor processing production lines, which have many unique challenges. [0003] In recent years, with the application of screw vacuum pumps in the petroleum and chemical industries, some problems have been exposed. The traditional shaft seal cannot guarantee the complete sealing of the conveying medium, and there must be a certain amount of medium leakage, which is harmful to the transmission of toxic and harmful medium. There will be potential safety hazards, and the life of the operator will be endangered when the situation is serious. Based on the above circumstances, a relatively zero-leakage screw vacuum pump i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C25/02F04C18/16
Inventor 雷震霖王光玉刘志东
Owner SHENYANG SCI INSTR RES CENT CHINESE ACAD OF SCI
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