INTELLIGENT DURABLE BURIED DRAINAGE PIPE AND SEPARATION CONVEYING METHOD

WIPO Patent Application WO/2022/047833

A1

An intelligent durable buried drainage pipe and a separation conveying method. The intelligent durable buried drainage pipe comprises an inner pipe (11) and an outer pipe (12); the outer pipe (12) is longer than the inner pipe (11); a permanent magnet (2) is provided on the section, longer than the inner pipe (11), of the outer pipe (12); at least one electromagnet (3) is fixed to the permanent magnet (2) at an interval and can attract the permanent magnet (2) to slide after being energized; the end portion, facing the permanent magnet (2), of the electromagnet (3) is provided with a distance sensor (6); the on/off of a switch is controlled by the distance sensor (6); an elastic telescopic member (4) is provided between the permanent magnet (2) and the electromagnet (3); and a housing (5) is provided on the outer pipe (12). According to the separation conveying method, magnetic substances in a pipeline (1) are attracted to the outer pipe (12) by magnetic force before entering the inner pipe (11), and the magnetic substances attracted by the permanent magnet (2) are transferred to the electromagnet (3). The separation conveying method is beneficial to collection of the magnetic substances in the drainage pipe.

LIU ZHIQIANG (CN)
WEN JIE (CN)
JIANG CHENGJIE (CN)

PCT/CN2020/115518

March 10, 2022

September 16, 2020

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UNIV CHANGSHA SCIENCE & TECH (CN)

B03C1/02; F16L55/24; F17D5/00

WO2013151415A1

2013-10-10

CN102215975A	2011-10-12
CN210356286U	2020-04-21
CN102078725A	2011-06-01
US20080099382A1	2008-05-01
FR2641983A1	1990-07-27
JPH08206420A	1996-08-13

CHANGSHA WESHINE INTELLECTUAL PROPERTY AGENCY (CN)

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