Title:
SHAFT SEALING APPARATUS AND VERTICAL SHAFT PUMP PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2018/142855
Kind Code:
A1
Abstract:
The present invention pertains to a shaft sealing apparatus that prevents leakage of a liquid from the shaft penetration part of a container penetrated by a rotary shaft. A shaft sealing apparatus (30) is provided with: a seal casing (70) that has a plurality of casing structures (33, 53) arranged along the axial direction of a rotary shaft (6); a plurality of seal chambers (33a, 53a) that are formed inside the respective casing structures; and a plurality of disk-shaped seal bodies (51) that have annular surfaces (31a, 51a) vertical to the shaft center of the rotary shaft, that are respectively housed in the seal chambers, and that rotate integrally with the rotary shaft. The casing structure have through-holes (35a, 55a) through which the rotary shaft passes and which are connected with the seal chambers, and the inner surfaces of the casing structures opposed to the annular surfaces of the seal bodies are planes vertical to the shaft center of the rotary shaft.
Inventors:
KAWAI YASUSHI (JP)
HIROKAWA KAZUTO (JP)
HIRATA KAZUYA (JP)
HIROKAWA KAZUTO (JP)
HIRATA KAZUYA (JP)
Application Number:
PCT/JP2018/000281
Publication Date:
August 09, 2018
Filing Date:
January 10, 2018
Export Citation:
Assignee:
EBARA CORP (JP)
International Classes:
F16J15/44; F04D13/00; F04D29/10; F16J15/447
Foreign References:
| JPH0193397U | 1989-06-20 | |||
| JPS4925948U | 1974-03-05 | |||
| JP2001241555A | 2001-09-07 | |||
| JPH01252377A | 1989-10-09 | |||
| JPH0213200U | 1990-01-26 | |||
| JPS5937369A | 1984-02-29 |
Attorney, Agent or Firm:
HIROSAWA, Tetsuya et al. (JP)
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