Special equivalent quantitative microenvironment layered integral sampling structure for grain depot

The utility model relates to the field of grain reserve, in particular to an equivalent quantitative microenvironment layered integral sampling structure special for a grain depot. The single pipe comprises more than one unit single pipe (1) which can be buckled together, each unit single tube (1) comprises a shell, a quantitative space (21) is formed below the shell, and an upper positioning clamping ring (22) and a blocking ring (16) are arranged on the inner wall of the shell; an upper positioning clamping ring (22) is fixedly connected with the upper net (6), a sealing plate (9) penetrates through the upper positioning clamping ring (22), the lower portion of the sealing plate (9) is limited by a blocking ring (16) relative to the lower portion, and a sample inlet (10) is formed in the right side of the quantitative space (21); the device has the effects that 1, in the descending process of the single tube, the sample inlet is closed, so that miscellaneous layers are prevented from being mixed or staggere