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High-efficiency three-claw claw type vacuum pump

A high-efficiency, vacuum pump technology, used in rotary piston pumps, components of pumping devices for elastic fluids, pumps, etc. The effect of volumetric efficiency

Pending Publication Date: 2019-09-17
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the volumetric efficiency of the three-claw vacuum pump is low, the profile composition is complex, and there are sharp points at the claw tips. During the operation of the claw vacuum pump, there is leakage at the claw tips and the claw tips are severely worn.

Method used

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  • High-efficiency three-claw claw type vacuum pump
  • High-efficiency three-claw claw type vacuum pump
  • High-efficiency three-claw claw type vacuum pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0049] Such as figure 1 As shown, it is a structural diagram of a three-claw vacuum pump, including a left claw rotor 1, a right claw rotor 2, a cavity 3 and an exhaust end cover 4, and the gas enters the cavity through the radial suction port 301 opened on the cavity 3 3. With the synchronous and opposite double-rotational motion of the left claw rotor 1 and the right claw rotor 2, the gas inhaled in the cavity 3 is transported and compressed in equal volume, and when the gas rotates to the position of the exhaust port, it passes through the exhaust port. The exhaust port 401 on the gas end cover 4 discharges axially.

[0050] Such as figure 2 As shown, it is the left profile line diagram of the left claw rotor, the left profile line 101 of the left claw rotor 1 is about its rotation center O 1 Symmetrical to the center of 120°, that is, the left c...

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Abstract

The invention discloses a high-efficiency three-claw claw type vacuum pump. A claw type rotor molded line is simple in forming, and is only formed through four kinds of curve lines, the problem that a three-claw rotor is large in design parameter selection limit is solved, traditional claw top and claw bottom arcs are omitted, an eccentric involute and an envelope line thereof are introduced, the volume efficiency of the three-claw claw type vacuum pump is obviously improved, the oval arcs are adopted on the claw tips, the leakage of the claw tips can be avoided, the wear to the claw tips can be reduced, and the pump has the important significance in property optimizing of the claw type vacuum pump. Meanwhile, in combination with the rotor molded line, an axial exhaust opening is designed, gas in a cavity is completely exhausted, gas excessive compression is avoided, and the energy consumption of the claw type vacuum pump is effectively reduced.

Description

technical field [0001] The invention relates to the field of vacuum acquisition equipment, in particular to a high-efficiency three-claw claw vacuum pump. Background technique [0002] The claw vacuum pump realizes the suction, compression and discharge process of gas through the synchronous counter-rotating double-rotation movement of a pair of claw rotors that mesh with each other, so that the volume of the working chamber changes periodically; it has the advantages of simple structure, stable operation, low noise and dryness. The advantages of oil-free type are widely used in electronics and petrochemical industries. [0003] Claw rotor is the core component of claw fluid machinery, and the design of its profile directly affects the performance of claw fluid machinery, such as sealing, area utilization, working efficiency and service life. Patent CN100526608C proposes a linear arc-type three-jaw rotor and its design method. The left rotor of this rotor is composed of cyc...

Claims

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Application Information

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IPC IPC(8): F04C18/18F04C25/02F04C29/00
CPCF04C18/18F04C25/02F04C29/00F04C2240/20
Inventor 王君赵胜许超冯浩志武萌奚周瑾赵峰刘汉卿
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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