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Title:
SEALED CENTRIFUGAL PUMP WITH HIGH TEMPERATURE RESISTANCE
Document Type and Number:
WIPO Patent Application WO/2019/080139
Kind Code:
A1
Abstract:
A sealed centrifugal pump with high temperature resistance, comprising a volute pump case (12). An impeller (11) is fittingly provided in the pump case, and the impeller is mounted on a rotating shaft (10). The bottom of the pump case is provided with a liquid inlet (13). A side of the pump case is provided with a liquid outlet (14). The rotating shaft is transmittingly connected to the output end of a motor (1). A dynamic sealing mechanism (9) is provided at a position where the rotating shaft passes through the pump case. The dynamic sealing mechanism comprises a bearing (8) having an inner race sleeved on the rotating shaft (8). An outer race of the bearing is supported on the pump case, and the upper side of the bearing is provided with a bearing gland (7). The pump case at the lower side of the bearing is partially provided with a step. A fixed ring (901) is fixed on the lower side of the step. An upper wear-resistant part (902) is fixed on the fixed ring. A moving ring (905) is sleeved on the rotating shaft. The inner side of the moving ring is provided with a high-temperature-resistance elastic body (904). A lower wear-resistant part (903) is fixed on the elastic body. A friction plane is formed between the lower wear-resistant part and the upper wear-resistant part. A spring (907) for pushing the moving ring upwardly is provided on the rotating shaft. The lower end of the elastic body and the rotating shaft are sealingly fixed by means of a press ring. The pump has low costs, can achieve complete sealing, and features excellent high temperature resistance.

Inventors:
ZHANG, Yongjun (36#Jinshi Street of Putou, Jiangdu DistrictYangzhou, Jiangsu 0, 225000, CN)
Application Number:
CN2017/108203
Publication Date:
May 02, 2019
Filing Date:
October 29, 2017
Export Citation:
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Assignee:
ZHANG, Yongjun (36#Jinshi Street of Putou, Jiangdu DistrictYangzhou, Jiangsu 0, 225000, CN)
International Classes:
F04D7/06
Foreign References:
CN101338756A2009-01-07
CN206159056U2017-05-10
CN102518589A2012-06-27
CN103195742A2013-07-10
CN202597214U2012-12-12
JP2002250294A2002-09-06
Attorney, Agent or Firm:
NANJING SUKE PATENT AGENT CO., LTD. (1-210 of Xinghuo Venture Building, XU Subai,20# of Xinghuo Road, Hi-Tech Development Zon, Nanjing Jiangsu 8, 210008, CN)
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