Filter pressing device for producing fluorescent whitening agent

The utility model discloses a fluorescent whitening agent production filter pressing device, which relates to the technical field of whitening agents and comprises a tank body, a first sleeve is fixedly connected to the axis of the inner bottom wall and the inner top wall of the tank body, four through grooves which are circumferentially arranged are formed in the outer surface of the first sleeve, and a supporting column is fixedly connected to the inner bottom wall of the first sleeve. And the supporting column penetrates through the first sleeve, a second sliding groove is formed in the supporting column, four push plates which are arranged in a circumferential mode are slidably connected into the second sliding groove, and the upper surface of each push plate is an inclined face. According to the filter pressing device for producing the fluorescent whitening agent, through mutual cooperation of a rotating shaft, a push block, a first spring and a push plate, a second sleeve can be separated from a through