The utility model discloses a trap sled piece, trap sled piece includes first chassis (2) and second chassis (3) that the components of a whole that can function independently set up, install in trap jar on first chassis (2) the body (1), with inlet tube (5) and gas outlet duct (6) of the top intercommunication of the trap jar body (1) and with liquid outlet pipe (4) of the bottom intercommunication of the trap jar body (1), gas outlet duct (6) and liquid outlet pipe (4) all the part arrange in on second chassis (3). The utility model discloses with the trap jar body and integrated on first chassis and second chassis respectively rather than each pipeline of intercommunication to make trap sled piece's compact structure, area is less, the transportation of being convenient for simultaneously. And, because above -mentioned trap sled piece's production is accomplished at the interplant with the equipment to can greatly reduce on -the -spot installation work volume, improve on -the -spot installation effectiveness, practice thrift the time limit for a project, reduce the construction investment.