The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2025
Filed:
May. 24, 2023
Shijiazhuang Tiedao University, Shijiazhuang, CN;
Jiwei Wen, Shijiazhuang, CN;
Pengshuai Zhang, Shijiazhuang, CN;
Wenjiang Li, Shijiazhuang, CN;
Xianmin Han, Shijiazhuang, CN;
Zhichun Liu, Shijiazhuang, CN;
Xingliang Sun, Shijiazhuang, CN;
Pengcheng Wang, Shijiazhuang, CN;
Weige Han, Shijiazhuang, CN;
Lin Gao, Shijiazhuang, CN;
SHIJIAZHUANG TIEDAO UNIVERSITY, Shijiazhuang, CN;
Abstract
A trenchless multi-stage pipe cleaning device and method combining an artificial tornado and dagger-like mechanical sand is provided. The trenchless multi-stage pipe cleaning device includes a primary pipe cleaning device and a secondary pipe cleaning device that are connected. An outer wall of the pipe cleaning device is provided with multiple air inlet joint pipes evenly distributed in a circumferential direction. The air inlet joint pipes are connected to an air compressor. Each of the air outlet joints is connected to a nozzle. The primary pipe cleaning device is connected to a vibrating screen. The trenchless multi-stage pipe cleaning device further includes a back-end sewage discharge device. In the trenchless multi-stage pipe cleaning method, the mechanical sand continuously scrape and collide with the inner wall of the cleaning target, so as to achieve a desired efficient trenchless water-free pipe cleaning effect.