Sampling device for perfusion packaging bag

The utility model relates to the technical field of a packaging machine, and particularly relates to a sampling device for a perfusion packaging bag. The sampling device comprises a U-shaped bottle clamping mechanism, a baffle plate and a sampling bottle, wherein a sampling opening for sleeving a bottle neck of the sampling bottle is formed in the baffle plate; the baffle plate is connected with the U-shaped bottle clamping mechanism in a sliding manner, and the baffle plate is a detachable baffle plate; the U-shaped bottle clamping mechanism is provided with a bottle clamping space for containing the sampling bottle; the U-shaped bottle clamping mechanism is also provided with a first groove for installing a sampling switch; when the baffle plate is fixedly installed on the U-shaped bottle clamping mechanism, the sampling switch contacts the baffle plate. By adopting the sampling switch, the interlocking of the sampling and the production can be realized, and the sampling per bag can be realized; the sampling opening can be completely overlapped with a bottle opening by virtue of the baffle plate and the bottle clamping mechanism, the scattering problem can be avoided, and the problem for fixing the sampling bottle also can be solved; when the sampling device is not used for sampling, the baffle plate can play a role in sealing the sampling opening.