Food selling device for canteen

The invention provides a food selling device for a canteen. The food selling device for the canteen comprises a first lifting branching chain, a second lifting branching chain, a tray rack, a selecting tray, a pricing device and an LED display lamp; each lifting branching chain comprises a driving rod and a connecting rod, wherein the driving rod is driven through a servo motor to rotate to drive the connecting rod to move so as to control the tray rack to raise and lower down; the selecting tray is used as an input device of the pricing device, and a single-chip microcomputer is used as a control core of the pricing device. The food selling device for the canteen has the advantages that the food can be selected from the outside of a window, the total price of the food can be automatically calculated, and the tray rack can be automatically raised and lowered down, so that the food selling efficiency is improved, and the tray rack can be quickly cleaned and stored for a long time, and as a result, the pollution of students to food during food selling can be further reduced; meanwhile, the brainwork and the physical work of a canteen worker can be reduced; the practicability and sanitation are superior to the existing food selling device for the canteen; the food selling device for the canteen is applied to the canteen of the modern school and is also applicable to a fast food restaurant.