Novel water meter impeller box

The novel water meter impeller box comprises a box body, a water inlet is formed in the outer side of the upper end of the box body, sliding rods are arranged on the two sides of the water inlet, a water outlet is formed in the lower end of the box body, a fixing plate is fixedly connected to one end of each sliding rod, and a rotating shaft is arranged in the middle of each fixing plate; bolts are rotationally connected to the rotating shafts, the other sides of the bolts are in threaded connection to the water inlet, water outlet holes are formed in the two ends of the lower side of the box body, a first upper pressing plate and a second upper pressing plate are arranged on the two sides of the upper end in the box body correspondingly, and a first clamping plate is fixedly connected to the lower side of the first upper pressing plate. According to the invention, through the first telescopic air cylinder, the second telescopic air cylinder, the first clamping plate and the second clamping plate, the functio