Pneumatic conveying pipeline with long service life

The pneumatic conveying pipeline with the long service life comprises a sending tank, three weighing modules are fixedly connected to the upper side of the surface of the sending tank, a feeding pipe is fixedly connected to the middle of the upper side of the sending tank, and a second air pipe is fixedly communicated with the side, close to the feeding pipe, of the sending tank; the right side, close to the feeding pipe, of the upper side of the sending tank communicates with a first air pipe, and the lower side of the feeding pipe communicates with a conveying assembly. The conveying assembly comprises a connecting ring sleeve, the lower side of the connecting ring sleeve fixedly communicates with a discharging connecting pipe, the lower side of the discharging connecting pipe integrally communicates with a first conveying pipe, the outer wall of the side, away from the discharging connecting pipe, of the first conveying pipe communicates with a hose in a sleeving mode, and the right side of the hose commun