The invention discloses a full-
diameter pipeline type sand removing device. The device comprises a flow direction adjusting inlet, a
cyclone sand removing section and a flow direction adjusting outlet, wherein partition plates are arranged between the flow direction adjusting inlet and the
cyclone sand removing section and between the
cyclone sand removing section and the flow direction adjustingoutlet, the flow direction adjusting inlet is of a structure formed by mutually nesting a flow direction adjusting inlet inner cylinder and a flow direction adjusting inlet outer cylinder, the cyclonesand removing section is of a structure formed by mutually nesting a cyclone section outer cylinder and a cyclone section inner cylinder, a double spiral
pipe is arranged at the inlet end of an annular space formed between the cyclone section outer cylinder and the cyclone section inner cylinder, the bottom, at the the downstream of the double spiral
pipe, of the outer cylinder of cyclone sand removing section is provided with sand discharging holes which are uniformly arranged, in the normal sand removing process, the partition boards are isolating blind plates, and in the case of a
pipe cleaning, the partition boards are full-
diameter backing plates. According to the device, when the sand removing device is used, the installation mode of the sand removing device is the same as a commonvalve, the device can be installed in a horizontal or vertical direction, extra space is not occupied, auxiliary facilities are not needed, the separation efficiency is high,
solid impurities in oil and gas can be can effectively separated, and meanwhile, normal conveying of the pipeline in the process of cleaning the sand is not affected.