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A screw assembly of a dry screw vacuum pump

A technology for screw vacuum pumps and screw components, which is applied in the direction of pump components, electric components, and parts of pumping devices for elastic fluids, and can solve the problem of affecting the working efficiency of dry screw vacuum pumps, affecting the meshing transmission of screw parts, and the relative position of screws Offset and other issues

Active Publication Date: 2021-06-08
南通市晶盛真空设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the screw assembly of the existing dry screw vacuum pump works for a long time, the relative position between the screws will shift, which will affect the meshing transmission of the screw parts, thereby affecting the working efficiency of the dry screw vacuum pump

Method used

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  • A screw assembly of a dry screw vacuum pump
  • A screw assembly of a dry screw vacuum pump
  • A screw assembly of a dry screw vacuum pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0078] The present invention will be further described below in conjunction with the accompanying drawings.

[0079] Such as figure 1 As shown, the screw assembly of a dry screw vacuum pump provided in this embodiment includes:

[0080] A driving screw 1 with a first threaded portion 11;

[0081] A driven screw 2 with a second threaded portion 21;

[0082] The first threaded part 11 and the second threaded part 21 rotate in opposite directions, and the two are engaged with each other;

[0083] There are two fixing components 3 and they are connected in the pump housing 4 . The head and tail ends of the driving screw 1 and the head and tail ends of the driven screw 2 are connected to the fixing components 3 correspondingly.

[0084] The working principle and beneficial effects of the above-mentioned technical scheme are:

[0085] Both the head and tail ends of the driving screw 1 and the head and tail ends of the driven screw 2 are fixedly connected in the pump casing 4 thr...

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Abstract

The invention discloses a screw assembly of a dry-type screw vacuum pump. The driving screw and the driven screw are fixedly installed in the pump casing through the fixing assembly, which reduces the possibility of relative position deviation between the driving screw and the driven screw, thereby improving The working efficiency of the dry screw vacuum pump is improved, which includes: a driving screw with a first threaded part; a driven screw with a second threaded part; the first threaded part is opposite to the second threaded part, and the two The two are engaged with each other; there are two fixed components, which are connected in the pump casing, and the first and last ends of the driving screw and the first and last ends of the driven screw are connected to the fixed components one by one.

Description

technical field [0001] The invention relates to the technical field of pumps, in particular to a screw assembly of a dry screw vacuum pump. Background technique [0002] The screw vacuum pump is an ideal dry pump that appeared in the 1990s. It has great application prospects and development potential, and occupies a very important position in the vacuum pump market. The dry screw vacuum pump uses a pair of screws to perform synchronous high-speed reverse rotation in the pump casing to generate suction and exhaust. Its main advantages are compact structure, long life, good dynamic balance, no need for lubrication and high pumping speed. It is mainly used in high-purity vacuum process, with extremely high vacuum degree, can adapt to harsh working conditions, and has the ability to extract condensate and particulate gas. At present, there are many types of vacuum pumps on the market, and oil-free dry vacuum pumps Due to no pollution, energy saving and environmental protection...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/16F04C23/02F04C25/02F04C29/00H02K11/25H02K11/02H02K11/30
CPCF04C18/16F04C23/02F04C25/02F04C29/00F04C29/0042F04C2240/80H02K11/02H02K11/25H02K11/30
Inventor 张晶晶
Owner 南通市晶盛真空设备有限公司