Title:
SEALED PIPE
Document Type and Number:
WIPO Patent Application WO/2022/011528
Kind Code:
A1
Abstract:
A sealed pipe, relating to the field of sealing. The sealed pipe comprises an outer sleeve (1), a center pipe (4) disposed in the outer sleeve (1), and a spring seal (2) and an expansion cone (3) sleeved on the center pipe (4); the expansion cone (3) and the spring seal (2) abut against each other; the end of the expansion cone (3) abutting against the spring seal (2) is configured as a chamfer. The expansion cone (3) is inserted into an inner spring seal ring (202) under the action of an external force to expand the spring seal (2), and under the action of the expansion cone (3), the spring seal (2) expands to press the pipe, thereby exerting a sealing and airtight function.
Inventors:
LIU LICHUN (CN)
Application Number:
PCT/CN2020/101785
Publication Date:
January 20, 2022
Filing Date:
July 14, 2020
Export Citation:
Assignee:
KUNSHAN DEAN MOULD DESIGN CO LTD (CN)
International Classes:
F16J15/16; F16L21/02; F16L5/02; F16L27/12
Foreign References:
| CN2140014Y | 1993-08-11 | |||
| CN102563075A | 2012-07-11 | |||
| CN2208641Y | 1995-09-27 | |||
| CN104633363A | 2015-05-20 | |||
| CN203500748U | 2014-03-26 | |||
| JP2017203498A | 2017-11-16 |
Attorney, Agent or Firm:
CHENGDU YUZHUA ZHIYUN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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