Self-priming starting device for centrifugal pump

US11480180B2 · kind B2 · utility

Assignee

• JIANGSU UNIVERSITY · CN

Inventors

• Wei Li · 安丰镇, CN
• Hao Chang · 安丰镇, CN
• Weidong Shi · Pearland, US
• Ling Zhou · San Jose, US
• Weidong Cao · North Potomac, US
• Yong Zhu · Zhenjiang, CN
• Tao Lang · Zhenjiang, CN
• Yangyang Wei · Zhenjiang, CN

Key dates

• Filing date: Dec 20, 2019
• Grant date: Oct 25, 2022
• Expiry date: Dec 20, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04D1/00
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A self-priming starting device for a centrifugal pump is mounted on a water inlet pipe of the centrifugal pump and includes an outer housing, an inner housing, a primary spacer, a secondary spacer, an opening and closing disc and a tertiary spacer which are sequentially provided in the outer housing from top to bottom, and an elastic steel plate provided in the water inlet pipe. A drum is provided in the inner housing, and air inlet pipes and air discharging pipes are provided on the inner housing. The drum is provided with drum chambers and a three-blade support is provided in the drum. The opening and closing disc is provided with a vertical rod. A gas-liquid cutter is provided between the primary spacer and the secondary spacer. The primary spacer, the secondary spacer, the opening and closing disc and the tertiary spacer are provided with through-holes.