Title:
LEAKAGE-PROOF SUBMERGED PUMP CAPABLE OF BEING USED IN HIGH-TEMPERATURE ENVIRONMENT
Document Type and Number:
WIPO Patent Application WO/2022/116018
Kind Code:
A1
Abstract:
A leakage-proof submerged pump capable of being used in a high-temperature environment, which pump comprises several pipe fittings (1), the end portion of the pipe fitting is provided with an annular groove (11) which is inwardly recessed, and two adjacent pipe fittings are connected by means of a coupling (2); and the coupling comprises four coupling units (21), which are arranged in an up-down and left-right mirroring manner, end portions of the coupling units are provided with clamping grooves matching the annular groove, hanging lugs are arranged on two sides of the coupling units, bolt via holes are provided in side walls of the hanging lugs, and the coupling units are all connected by means of bolts. By means of the design whereby the coupling is divided into the four coupling units, when in use, gaps among the four coupling units can be filled by means of welding, so as to ensure the sealing performance, and the usage of sealing rings (sealing rings are prone to losing efficacy in a high-temperature environment) is reduced.
Inventors:
YUAN DAN QING (CN)
CONG XIAOQING (CN)
CONG XIAOQING (CN)
Application Number:
PCT/CN2020/133198
Publication Date:
June 09, 2022
Filing Date:
December 02, 2020
Export Citation:
Assignee:
ZHENJIANG FUTAIKE FLUID TECH CO LTD (CN)
International Classes:
F16L23/00; F16L21/06
Foreign References:
| CN211624483U | 2020-10-02 | |||
| EP0178360A1 | 1986-04-23 | |||
| CN111076003A | 2020-04-28 | |||
| CN208331500U | 2019-01-04 | |||
| EP2372210A2 | 2011-10-05 | |||
| US20080203727A1 | 2008-08-28 |
Attorney, Agent or Firm:
ZHENJIANG JIDE PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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