国家/地区 中国（3）
IPC部 B（3）
IPC大类 B01（3） C02（2）
IPC小类 B01D（3）
IPC B01D039/20（2） C02F001/00（2） C02F001/28（2）
C02F101/20（2） C02F101/30（2）
发明人 ZHANG K（3）
公开年 2021（3）
申请年 2019（2） 
专利权人 NUCLEAR IND .（2）

Composite filter element useful in filter for emergency water supply, comprises multiple closely-connected hollow cylindrical filter layers, which are ceramic layer, composite adsorption layer, protective layer and activated carbon layer.

ZHANG K, WEI S, LIU M, BI Y, DU J

Filter for emergency water supply, has shell whose side wall is formed with water inlet, where bottom part of shell is formed with water outlet and center part of composite filter core is formed with central cavity for flowing out water supply flow.

ZHANG K, WEI S, LIU M, BI Y, DU J

Reaction kettle for producing graphene, comprises reaction kettle shell, sealing upper cover, threaded groove, countersunk hole, bolt, pressure gauge and sealing material injecting pipe, where sealing cover is covered on upper end of reaction kettle shell.

LIANG Z, DENG Y, ZHANG K