Full-flow groove sealing device

The utility model relates to the technical field of full flow grooves, in particular to a full flow groove sealing device which comprises a full flow groove, the top end of the full flow groove is connected with a sealing cover through a screw, the sealing cover adopts a stainless steel plate with the thickness of 8-10mm as a sealing base material, a tetrafluoro self-adhesive tape and sealant are filled between the sealing cover and the full flow groove, the sealing cover is communicated with a feeding pipe, and the feeding pipe is communicated with the full flow groove. The sealing cover communicates with an exhaust pipe, the top end of the exhaust pipe is fixedly connected with a first flange, the first flange is connected with a second flange through a bolt, the second flange is connected with a first connecting pipe, the top end of the first connecting pipe communicates with a purification box, and the right end of the purification box communicates with a second connecting pipe; the second connecting pipe