CN210128081U

CN210128081U - Be used for vacuum pump dynamic seal oil blanket structure

Info

Publication number: CN210128081U
Application number: CN201920568297.XU
Authority: CN
Inventors: 韦梅芳
Original assignee: Jiangsu City Plum Blossom Machinery Co Ltd
Current assignee: Jiangsu City Plum Blossom Machinery Co Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-03-06
Anticipated expiration: 2029-04-24

Abstract

The utility model relates to a be used for vacuum pump dynamic seal oil blanket structure, including oil blanket inner ring and oil blanket outer loop, the oil blanket inner ring is located the radial inside of oil blanket outer loop, and the oil blanket inner ring includes inner ring skeleton and inner ring cladding body, the cross-section of inner ring skeleton is buckled into the right angle form and whole is wrapped up in the inside of inner ring cladding body; the oil seal outer ring comprises an outer ring framework and an outer ring coating body, the cross section of the outer ring framework is vertical and is integrally wrapped inside the outer ring coating body, and a spring is arranged in the outer ring coating body. The lower surfaces of the oil seals are arranged to be positioned on the same horizontal plane; lubricating oil breaks through the oil blanket lower edge, and after entering into the oil blanket inside from the outer loop cladding body, because the cross-section of outer loop skeleton is vertical form, does not block lubricating oil, and the inside lubricating oil that enters into the oil blanket still can flow back out to it is long-pending more to avoid the lubricating oil in the oil blanket, leads to the oil circuit trouble to appear at last.

Description

Be used for vacuum pump dynamic seal oil blanket structure

Technical Field

The utility model relates to an oil blanket structure, concretely relates to oil blanket structure for vacuum pump.

Background

The vacuum pump all can use the oil blanket usually in the use, and among the prior art, oil blanket structure generally includes oil blanket inner ring and oil blanket outer loop, and the oil blanket inner ring includes inner ring core and inner ring seal body, and the oil blanket outer loop includes outer loop core and outer ring seal body. Vacuum pump is when high-speed rotation, and inside lubricating oil got into the vacuum pump casing from the inlet port, the oil blanket was exactly for preventing that lubricating oil from taking place to leak, but in case lubricating oil enters into the oil blanket the inside from outer ring body through the gap, because blockking of oil blanket lower edge, the lubricating oil that flows in earlier stage just is difficult to flow back, leads to the oil circuit not smooth.

SUMMERY OF THE UTILITY MODEL

To the not enough and defect that exists among the prior art, the utility model provides a be used for vacuum pump dynamic seal oil blanket structure.

The utility model provides a technical scheme that its technical problem adopted is: a dynamic seal oil seal structure for a vacuum pump comprises an oil seal inner ring and an oil seal outer ring, wherein the oil seal inner ring is positioned in the radial inner part of the oil seal outer ring, the oil seal inner ring comprises an inner ring framework and an inner ring coating body, the cross section of the inner ring framework is bent into a right-angle shape, and the whole inner ring coating body is coated in the inner ring coating body; the oil seal outer ring comprises an outer ring framework and an outer ring coating body, the cross section of the outer ring framework is vertical and is integrally wrapped inside the outer ring coating body, and a spring is arranged in the outer ring coating body.

The utility model has the advantages that:

the lower surfaces of the oil seals are arranged to be positioned on the same horizontal plane; lubricating oil breaks through the oil blanket lower edge, and after entering into the oil blanket inside from the outer loop cladding body, because the cross-section of outer loop skeleton is vertical form, does not block lubricating oil, and the inside lubricating oil that enters into the oil blanket still can flow back out to it is long-pending more to avoid the lubricating oil in the oil blanket, leads to the oil circuit trouble to appear at last.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of the installation structure of the oil seal and the vacuum pump shaft of the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1, a dynamic seal oil seal structure for a vacuum pump comprises an oil seal inner ring and an oil seal outer ring, wherein the oil seal inner ring is located inside the oil seal outer ring in the radial direction, the oil seal inner ring comprises an inner ring framework 4 and an inner ring coating body 3, the cross section of the inner ring framework 4 is bent into a right-angle shape, and the whole inner ring framework is coated inside the inner ring coating body 3; the oil seal outer ring comprises an outer ring framework 6 and an outer ring coating body 5, the cross section of the outer ring framework 6 is vertical and integrally wrapped inside the outer ring coating body 5, and a spring 1 is arranged in the outer ring coating body 5, so that the oil seal has certain elasticity and is easy to install on a vacuum pump.

As shown in fig. 2, the oil blanket is installed on the axle 12 of vacuum pump, oil inlet 13 has radially been seted up in the periphery of vacuum pump casing 11, lubricating oil gets into inside vacuum pump casing 11 from oil inlet 13, wherein can flow upwards all the way, if the volume of lubricating oil is not very big, can be blocked by the oil blanket, if the volume of lubricating oil is great or the pressure ratio is great, lubricating oil will break through the oil blanket lower edge, inside getting into the oil blanket from outer loop cladding body 5, because the cross-section of outer loop skeleton 6 is vertical form, do not block lubricating oil, the inside lubricating oil that gets into the oil blanket still can flow back and come out, thereby avoid the lubricating oil in the oil blanket to amass more, finally lead to the oil circuit.

Claims

1. The utility model provides a be used for vacuum pump dynamic seal oil blanket structure which characterized in that: the oil seal structure comprises an oil seal inner ring and an oil seal outer ring, wherein the oil seal inner ring is positioned in the radial inner part of the oil seal outer ring, the oil seal inner ring comprises an inner ring framework (4) and an inner ring coating body (3), the cross section of the inner ring framework (4) is bent into a right-angle shape, and the inner ring coating body (3) is integrally coated with the cross section of the inner ring framework; the oil seal outer ring comprises an outer ring framework (6) and an outer ring coating body (5), the cross section of the outer ring framework (6) is vertical and integrally wrapped inside the outer ring coating body (5), and a spring (1) is arranged in the outer ring coating body (5).