Coal sample tank

The utility model discloses a coal sample tank. Wherein the lower end of the tank cover is hermetically connected with the upper end of the tank body, the upper end of the tank cover is communicated with an air inlet of the air guide pipe, an air outlet of the air guide pipe is connected with a connecting nut, a trumpet-shaped vent groove communicated with the air guide pipe is formed in the connecting nut, a large opening of the trumpet-shaped vent groove is connected with the air guide pipe, and a small opening is connected with external equipment; the coal sample reaction device can preventcoal samples from escaping in the measuring process while realizing coal sample reaction, so that the accuracy and the reliability of a measuring result are ensured, meanwhile, the reacted gas can besmoothly discharged to measuring equipment through the gas guide pipe, and the reliability of the measuring result is further improved. 本实用新型公开了一种煤样罐，包括上下设置的罐盖、罐身和导气管，罐盖下端密封连接罐身上端，罐盖上端连通导气管进气口，导气管的出气口连接有连接螺母，连接螺母内设有连通导气管的喇叭状通