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Vacuum pump with integrated cam shaft

A camshaft and integrated technology, applied in the direction of rotary piston pumps, pumps, pump components, etc., can solve the problems of cumbersome assembly, affecting the accuracy of coaxiality, and affecting the service life of blades, etc., and achieve a simple overall structure and high coaxiality. High precision and extended service life

Active Publication Date: 2015-04-01
NINGBO SHENGLONG AUTOMOTIVE POWERTRAIN SYSTEM CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the more common camshaft vacuum pumps, the camshaft, the rotor, and the coupling are generally three separate parts. There are more or less assembly errors caused by assembly, which affect the coaxiality accuracy of the three to a certain extent
[0003] In addition, because the rotor installs the vane through the open slot at the top, after the vane is installed in the open slot, the top of the vane is directly in contact with the cover plate of the pump body. There will be continuous friction between the top of the blade and the cover plate of the pump body, which will wear the top of the blade and seriously affect the service life of the blade

Method used

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  • Vacuum pump with integrated cam shaft

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Embodiment Construction

[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0014] As shown in the figure, the camshaft integrated vacuum pump of the present invention includes a pump body 1 , a camshaft 2 , vanes 3 , and a rotor 4 installed in the inner chamber of the pump body 1 .

[0015] Different from the prior art, the lower end of the rotor 4 is formed with a connecting section 5 and the rotor 4 is integrated with the camshaft 2 through the connecting section 5 . After the integrated structure, it becomes a part, which saves the assembly process of each part, and at the same time, the coaxiality can also be effectively guaranteed.

[0016] The rotor 4 is provided with a radial installation hole 4.1, the shape and size of the installation hole 4.1 match the shape and size of the blade. In this embodiment, because the blade is rectangular, the installation hole 4.1 is also rectangular. The vane 3 is installed in the installatio...

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Abstract

The invention provides a vacuum pump with an integrated cam shaft. The vacuum pump comprises a pump body (1), a cam shaft (2), a blade (3) and a rotor (4) installed in an inner cavity of the pump body (1), wherein a connecting segment (5) is formed at the lower end of the rotor (4), the rotor (4) is of an integral structure with the cam shaft (2) through the connecting segment (5), the rotor (4) is provided with a radial mounting hole (4.1), the blade (3) is mounted in the mounting hole (4.1) in a suspension manner, the mounting hole (4.1) below the blade (3) forms a lower oil inlet cavity (6) for enabling lubricating oil to enter, oil grooves (4.2) communicated with the lower oil inlet cavity (6) are symmetrically formed in the two side walls of the mounting hole (4.1) along the axial direction, a sealing cover (7) used for covering the oil grooves (4.2) is arranged at the top of the rotor (4), and a second oil inlet cavity (8) for enabling the lubricating oil to enter is formed between the sealing cover (7) and the top of the blade (3). The vacuum pump with integrated cam shaft is simple in structure and does not need to be assembled, can be used for effectively guaranteeing the coaxiality, and can be used for effectively avoiding the abrasion of the blade, so that the service life of the blade is prolonged.

Description

technical field [0001] The invention relates to the technical field of vacuum pumps, in particular to a camshaft integrated vacuum pump. Background technique [0002] At present, in the more common camshaft vacuum pumps, the camshaft, the rotor, and the coupling are generally three separate parts. As a result, there are more or less assembly errors caused by assembly, which affect the coaxiality accuracy of the three to a certain extent. [0003] In addition, because the rotor installs the vane through the open slot at the top, after the vane is installed in the open slot, the top of the vane is directly in contact with the cover plate of the pump body. There will be continuous friction between the top of the blade and the cover plate of the pump body, which will cause the top of the blade to wear and seriously affect the service life of the blade. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a camshaft-inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/344F04C29/02
CPCF04C18/344F04C25/02F04C29/02F04C2240/20
Inventor 胡林勇罗玉龙洪杰汪晓承李亮
Owner NINGBO SHENGLONG AUTOMOTIVE POWERTRAIN SYSTEM CO LTD
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