[Patent] A submersible pump shaft seal for corrosion applications

Application (Patent) No. 2
Name: A submersible pump shaft seal for corrosion applications
Public (announcement) day: 2006.12.20
Application (patent) person: Shanghai Liancheng (Group) Co., Ltd.
Address: No. 3616, Caoan Road, Jiangqiao Town, Jiading District, Shanghai, China
Invention (design) person: Tang Ping; Yan Zelong
Summary
The utility model relates to a submersible pump shaft seal applied to corrosion occasions. The utility model comprises a pump shaft, an impeller and a mechanical seal, wherein the pump shaft has a sleeve, the sleeve is inverted T-shaped, the sleeve sleeve has a mechanical seal, the lower end surface of the sleeve fits the hub surface of the impeller, and the hub surface is attached There is an annular groove at the lower end surface of the joint sleeve, and an O-ring seal is arranged in the annular groove. The utility model has the advantages of preventing the corrosive medium from entering the shaft end from the gap between the impeller and the mechanical seal on the shaft, and protecting the pump shaft from erosion.
(Source: Shanghai Liancheng (Group) Co., Ltd.)

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