The baffle door is divided into single plate and double plate, which form is determined according to the amount of garbage disposal. The door is usually made into a box–shaped structure with internal reinforcing ribs and refractory material laid; it is connected to the inlet of the feed pipe and operated remotely through a hydraulic system. When the garbage stored in the garbage feeding hopper and the feeding pipe cannot be sealed, the baffle door needs to be closed The main material of the feeding device is ordinary carbon steel, and the thickness is generally 10~12. The material of the baffle door can be thicker. The feed hopper is usually lapped on the civil construction beams, and a device for absorbing thermal expansion is installed at the junction of the feed hopper and the feed pipe. In addition, in order to prevent people from accidentally falling, the hopper needs to be about 80cm higher than the hopper platform; guardrails should be set along the edge of the hopper platform on the side of the garbage pool, but it should not hinder the feeding operation.