Suction filtration device for heterocyclic compound production

The utility model discloses a suction filtration device for heterocyclic compound production. The filter comprises a barrel and a filter cartridge, a sealing cover is hinged to one end of the cylinderbody; a sealing ring is arranged on the inner side of the sealing cover; wherein the filter cartridge is arranged in the cartridge body; a sealing gasket is installed at the bottom of the barrel, a liquid pump is installed on the support, a liquid outlet of the liquid pump is communicated with the feeding port, a funnel is arranged on the lower side of the liquid outlet, a discharging port is formed in the lower end of the funnel, an electromagnetic valve is installed on the discharging port, and the upper end of the funnel is welded to the surface of the barrel in a sealed mode. The liquid falls into the funnel through the discharge port under the action of gravity; filtered liquid is collected through the discharging opening, the sealing cover is hinged to one end of the cylinder body,opening and closing are co