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Modular integrated multi-stage and multi-drive chamber partially non-coaxial dry type vacuum single pump

一种驱动腔、多驱动的技术，应用在用于弹性流体旋转活塞式/摆动活塞式的泵组合、旋转活塞式/摆动活塞式的泵部件、旋转活塞式泵等方向，能够解决难以实现节能环保等问题，达到便于维护和洗涤、泵腔容积大、转子结构简单的效果

Inactive Publication Date: 2017-02-22
ELIVAC CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of vacuum equipment technology, the existing dry vacuum pumps have their own deficiencies, making it impossible to directly replace liquid ring pumps, jet pumps, oil-type rotary vane pumps, etc. with dry vacuum pumps in many technological situations. Realize energy saving and environmental protection

Method used

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  • Modular integrated multi-stage and multi-drive chamber partially non-coaxial dry type vacuum single pump
  • Modular integrated multi-stage and multi-drive chamber partially non-coaxial dry type vacuum single pump
  • Modular integrated multi-stage and multi-drive chamber partially non-coaxial dry type vacuum single pump

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Embodiment Construction

[0042] The present invention is a modular one-piece multi-drive chamber partial non-coaxial vacuum single pump (including multi-drive chamber incomplete coaxial vacuum pump, that is, some drive chambers may be coaxial, but not all drive chambers are coaxial). To achieve a higher vacuum, an independent vacuum pump must perform multi-stage continuous compression of the gas to achieve it. According to the gas balance equation, P 1 V 1 =P 2 V 2 =P 3 V 3 =P 4 V 4 , if at this time P 1 Represents the atmospheric pressure of 1013mbar, P 4 It is a high vacuum of 1mbar at the suction port. If it is realized by one-stage compression, the actual gas compression amount is about 1013 times, and then according to the formula of air compression temperature rise: T 1 = T 2 *(P 2 / P 1 ) 0.286 If calculated, the temperature rise may reach 7.2 times. At this time, the temperature of the exhaust port will reach 1800°, which is obviously not allowed. So like a dry screw pump with an i...

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Abstract

The present invention discloses a modular integrated multi-stage and multi-drive chamber partially non-coaxial dry type vacuum single pump, which comprises a plurality of modular vacuum drive chambers. The dry type vacuum single pump is characterized in that the plurality of modular vacuum drive chambers are integrated as an overall single pump. The plurality of modular vacuum drive chambers are connected in series to form a multi-stage vacuum single pump. At least two vacuum drive chambers, among the above plurality of modular vacuum drive chambers, are associated in the two non-coaxial manner, wherein the gas mainstream direction is perpendicular to the drive shaft of a rotor. The inlet of a first-stage vacuum chamber is directly introduced to the atmosphere. According to the technical scheme of the invention, the plurality of modular vacuum drive chambers are non-coaxial, so that the compression ratio of each vacuum drive chamber is adjustable. In this way, in the high-vacuum environment, the compression ratio is large. In the rough vacuum environment, the compression ratio is small. Therefore, both the safety and the efficiency are given consideration to, and the optimized control is enabled. The differential pressure sharing and the heat sharing at each stage are more uniform.

Description

technical field [0001] The invention relates to the field of vacuum pumps, in particular to a module-integrated multi-stage multi-drive cavity part non-coaxial dry vacuum single pump. [0002] technical background [0003] In the field of vacuum technology, single pumps that can directly exhaust the atmosphere and form a vacuum mainly include liquid ring pumps, air-cooled Roots vacuum pumps that directly exhaust the atmosphere, jet pumps (including steam jet pumps, water jet pumps), slide valve pumps, and reciprocating pumps. Rotary vane vacuum pumps (divided into oil rotary vane vacuum pumps and oil-free dry rotary vane vacuum pumps), screw vacuum pumps, claw vacuum pumps, multi-stage Roots vacuum pumps, scroll vacuum pumps, etc. Ordinary Roots vacuum pumps can form a relatively high vacuum, but the exhaust pressure cannot reach the pressure of direct exhaust to the atmosphere. The above-mentioned vacuum pump must be equipped as a backing pump to operate normally and safely....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C25/02F04C29/00F04C29/04F04C23/02
CPCF04C23/02F04C25/02F04C29/00F04C29/04F04C28/02F04C28/08F04C2240/70F04C18/126F04C23/001F04C29/005F04C29/0085F04C29/12
Inventor 潇然荣易
Owner ELIVAC CO LTD
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