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:
Jul. 28, 2015
Filed:
Jan. 15, 2010
Jiyue Yang, Guangdong, CN;
Hongbin Huang, Guangdong, CN;
Jiyue Yang, Guangdong, CN;
Hongbin Huang, Guangdong, CN;
GUANGDONG LIANSU TECHNOLOGY INDUSTRIAL CO., LTD., Foshan, CN;
Abstract
An impeller type water-hammer proof and silent check valve includes a shell, a sealing ring, a cowl, a flow guide body and a spring. Turbulent-flow blades are provided on the outer surface of the flow guide body. Two groups of axial-flow blades are arranged in the flow passage, and the blades are fixed on the streamline outer surface. The valve continuously converts pressure energy and kinetic energy to a torque surrounding an axial direction to the flow guide body during a process of backflow liquid flowing through the turbulent-flow blades. The valve forms a pair of torques counteracting each other as the turbulent-flow directions of the two groups of blades are opposite. The liquid pressure energy and kinetic energy are continuously and gradually converted to the torque to the flow guide body in the turbulent-flow blades, so that an abrupt impact to the valve by the water hammer is eliminated.