Sampler suitable for anti - flowing back jet pump

The utility model discloses a sampler suitable for anti - flowing back jet pump, including last check valve, sampler barrel, lower check valve and the crossover sub that connects gradually, go up the check valve and pass through upper end screw thread and the connection of jet pump pump core, the through -hole has been offered to the inside cavity of crossover sub on the lateral wall, stratum liquid gets into the crossover sub from the through -hole inside, warp check valve down gets into in the sampler barrel, this sampler and jet pump are supporting to be used, and the stratum fluid gets into the sampler from the through -hole on the crossover sub, and two check valves of rethread get into the jet pump. The utility model discloses rational in infrastructure, convenient to use and jet pump are supporting to be used, need not to take a sample alone the operation, has reduced the flow chart, has reduced the operating cost. 本实用新型公布了种适用于反排液射流泵的取样器，包括依次连接的上单向阀、取样筒、下单向阀和转换接头，所述上单向阀通过上端螺纹和射流泵泵芯连接，所述转换接头内部中空，侧壁上开设有通