Tunnel type sterilizing drier

Abstract

The invention discloses a tunnel type sterilizing drier which comprises drying oven and a conveying mechanism arranged in the drying oven, wherein the conveying mechanism comprises more than two groups of conveying net belt components which are arranged in parallel; and each conveying net belt component comprises a driving chain wheel, a driven chain wheel and a conveying net belt which is arranged on the driving chain wheel and the driven chain wheel in a winding way. The tunnel type sterilizing drier has the advantages that the surface flatness of a net belt is good, the conveying stability is high, the carrying capacity of a transmission shaft is strong, the flowability of hot air is more uniform, the air quantity and the air speed are easy to control, the sterilization effect is good, the production efficiency is high, and the like.

Description

technical field [0001] The invention relates to the field of food and pharmaceutical packaging machinery, in particular to a tunnel type sterilization dryer. Background technique [0002] In the food and pharmaceutical packaging machinery industry, the tunnel sterilization dryer is mainly used for drying, sterilizing and cooling medicine bottles. The existing tunnel-type sterilization dryer generally only has one cavity, and a set of hot air circulation unit for sterilization and drying is installed in the cavity. The hot air circulation unit generates hot air and blows it to the conveying mesh belt, and the medicine bottles are sterilized and dried during the transportation process from the bottle inlet to the bottle outlet. [0003] In order to achieve higher output, under the premise of ensuring the sterilization time of a single medicine bottle, the cavity is generally made longer and wider, and at the same time, the width of the conveying mesh belt in the cavity is inc...

AI Technical Summary

Problems solved by technology

However, when the width of the conveying mesh belt is increased, problems such as uneven conveyance of the medicine bottle and bulge in the middle of the mesh belt are prone to occur, which makes the fluctuation of the medicine bottle on the mesh belt easy to overturn, and the weight of the conveying mesh belt will also increase due to the widening of the conveying mesh belt. Large, it is necessary to thicken the transmission shaft supporting the mesh belt to ensure that it will not be bent and deformed, which not only leads to an increase in cost, but also increases the load on the motor

[0004] In addition, the medicine bottles are mainly dried, sterilized and depyrogenated in the high-temperature section of the tunnel-type sterilization dryer. When the width of the box body and the conveyor belt is too wide, the flow of hot air blowing to the medicine bottles is not uniform. The hot air near the return air channel has a fast flow rate, and the medicine bottle heats up quickly, while the hot air near the middle of the conveyor belt has a slow flow rate, and the medicine bottle heats up slowly, resulting in extremely uneven temperature rise of the medicine bottle on the conveyor belt, which will lead to The medicine bottles near the return air channel on the mesh belt have been sterilized, but the medicine bottles in the middle of the conveyor belt have not achieved the sterilization effect. In order to meet the sterilization requirements of the medicine bottles in the middle of the conveyor belt, the only way to The transmission speed of the belt, and slowing down the speed of the conveyor belt will reduce the output of medicine bottles per unit time.

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