Combined flow metering device

The utility model discloses a combined flow metering device, which relates to the technical field of flow metering and comprises a connector, the upper surface of the connector is fixedly connected with a meter head, and the inner side wall of the connector is fixedly connected with a blind plate. Through the arrangement of the connector, the spring, the guide pillar, the sliding block, the threaded rod, the locking nut, the clamping jaw, the fixing ring, the vertical pipe, the meter head and the like, when the meter head needs to be disassembled, a gap is formed between the locking nut and the connector by rotating the locking nut, the spring upwards jacks the guide pillar to move, the guide pillar upwards moves to drive the sliding block to move rightwards, and the meter head is disassembled. The sliding block moves to drive the threaded rod to move towards the right side, so that the locking nut is tightly attached to the connecting body, the guide column moves upwards and drives the two clamping jaws to r