A lost-weight scale feeding mechanism

Abstract

The utility model discloses a kind of material supplementing mechanism of weightlessness scale, including material guiding pipe and two pneumatic valves;Gas pipe assembly is equipped on the pipe wall of material guiding pipe, inlet and outlet two ends are respectively installed pneumatic valve, and two pneumatic valves are oppositely arranged, valve plate movement direction is opposite or opposite, forms the sealing structure of opposite clamping type.The utility model effectively solves the technical problem that single valve is easy to be blocked under the working condition of granular material containing, and sealing is not strict, and the double valve of reverse installation constitutes series connection sealing, even if one valve appears tiny gap due to granular residue, another valve can still ensure complete sealing;Gas pipe assembly on material guiding pipe can be passed into compressed air to form air curtain, both can blow off valve seat residual particles, and can also block material penetration, avoid the scale data drift phenomenon caused by material residue in material guiding pipe inside, improve the measurement accuracy.

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