Methane desorption measurement of velocity appearance

The utility model provides a methane desorption measurement of velocity appearance, including buret, blast pipe and coal sample tank, set up at the scale on buret's the lateral wall, at the fixed rings that are provided with in buret upper end, be provided with the water filling port on the buret lower extreme lateral wall respectively, the outlet, the air inlet, link up in water filling port andthe buret, lie in in water filling port department that the terminal surface facial make -up is equipped with the cock switch under the buret, link up in outlet and the buret, it is equipped with theoutlet stopper to detain at the opening part of outlet, the air inlet link up with buret, blast pipe one end is inserted and is established in the air inlet, blast pipe other end cover is equipped with the pjncture needle head, puncture syringe needle front end inserts in the coal sample tank, the blast pipe facial make -up is equipped with and plays spring clamping. The utility model has the advantages of easy and simple