Air-leakage-preventing liquid injection device for air conditioner maintenance

Abstract

The utility model discloses an air-leakage-proof liquid filling device for air conditioner maintenance in the technical field of air conditioner maintenance, which comprises a support frame, one end of a filling pipe is fixedly connected with a threaded ring, the threaded ring is in threaded rotation connection with a connecting pipe, a first one-way valve is fixedly mounted above the inner side of a vertical pipe, and a second one-way valve is fixedly mounted above the inner side of the vertical pipe. A second one-way valve is fixedly installed on the lower portion of the inner side of the vertical pipe, a connector is fixedly installed at the top end of the vertical pipe, a filling head is fixedly connected to the bottom of the vertical pipe, and a piston block is movably connected to the inner side of the filling pipe. And when the air cylinder drives the piston block to move towards the left side in the filling pipe, liquid is sucked into the filling pipe from the upper portion of the first one-way valve, when the air cylinder drives the piston block to move towards the left side in the filling pipe, the liquid is squeezed, and therefore the second one-way valve can be automatically opened, the liquid enters the air conditioner from the interior of the filling head, the filling effect of air leakage preventing liquid is achieved, and the working efficiency is improved.

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