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Sealing device for flow machine

A technology of sealing device and flow generator, which is applied to parts of pumping device for elastic fluid, sealing of engine, mechanical equipment, etc., can solve the problem of increasing friction, energy consumption and heat generation, increasing friction and heat etc. question

Inactive Publication Date: 2013-11-13
SULZER MANAGEMENT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems associated with this construction are: 1) the volume of the first chamber is relatively large, whereby the oil can rotate around the volume, which means increased friction, heat generation and thus high pumping losses; and 2 ) Regardless of the volume of the first chamber, this structure has a high oil flow capacity due to the oil return passage from the first chamber, which also results in high friction losses, high energy consumption and heat generation in each flow passage
Another problem associated with the structure in question is the higher oil volume rotation in the first chamber, which increases friction, energy consumption and heat generation

Method used

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  • Sealing device for flow machine
  • Sealing device for flow machine
  • Sealing device for flow machine

Examples

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Embodiment Construction

[0019] figure 1 and Figure 1a A partial sectional view of a prior art aerodynamic machine 2 is shown, having a shaft 4 , a pair of angular contact ball bearings 6 and a shaft seal 8 in close configuration. The diagonal contact ball bearing 6 is used as a thrust bearing for a flow machine such as a centrifugal pump. The angular contact ball bearing is composed of an inner ring 6i, an outer ring 6o and bearing balls 10 therebetween. The thrust bearing 6 has been fastened on the shaft 4 by means of a nut 12 sometimes provided with a washer to fasten an inner ring 6i on a shoulder on the shaft 4 . The outer ring 6 o of the thrust bearing 6 is provided on the inner surface of the bearing housing 14 . A bearing cover 16, which additionally has a central hole for the shaft 4 and the shaft seal 8, has been fastened to the outer end of the bearing housing 14, i.e. to the shaft removed from a working part such as the impeller of a centrifugal pump or the rotor of an agitator. end o...

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Abstract

The present invention relates to a sealing device for a flow machine. The sealing device of the present invention is applicable for sealing bearing device of centrifugal pumps, mixers, blowers etc. The present invention is especially applicable in sealing a bearing assembly including two angular contact ball bearings used in back-to-back configuration. The present invention relates especially to a baffle (32) arranged between the bearing (6) and the bearing housing (30), the baffle (32) leaving a gap (36) between itself and the inner bearing ring (6i) for the oil to flow from the bearing to the oil channel (38), and from the oil channel (32) via a groove (20) back to the oil chamber (22).

Description

technical field [0001] The invention relates to sealing devices for flow machines. The sealing device of the present invention can be used for sealing the bearing devices of centrifugal pumps, mixers, blowers and the like. The invention is particularly applicable to sealing bearing assemblies comprising two angular contact ball bearings used in a back-to-back configuration. Background technique [0002] It is common practice to use a pair of angular contact ball bearings constructed in close succession as thrust bearings for centrifugal pumps. Such thrust bearings are usually lubricated with oil grooves so that the oil level in the shaft-side oil chambers of the pair of bearings extends to the center line when the roller arrangement is in the lowest rotational position. The diagonal contact ball bearings are usually located at the end of the flow generator near the coupling of the drive shaft and are fastened to the shaft by nuts. The bearing (of the pair) closest to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/78F16J15/16
CPCF04D29/10F16C33/6659F04D29/049F16C19/10F16C35/04F16C33/7886F04D29/106F04D29/061F16C33/6685F16C33/723F16C19/543F16C19/163
Inventor H.曼尼嫩
Owner SULZER MANAGEMENT AG