Tunnel vacuum furnace based on veneer backflow

Abstract

The invention discloses a tunnel vacuum furnace based on veneer backflow. The tunnel vacuum furnace comprises a plurality of laminates and a plurality of tunnel cavities. The tunnel cavities make contact with the outside world through ordinary pressure plate valves. The two sides of the tunnel cavities are provided with a feed position and a discharge position. A laminate transmission and locatingmechanisms is installed at the bottoms of the feed position, the discharge position and the tunnel cavities. Laminate heating devices are arranged in the tunnel cavities and comprise movable contactsand stationary contacts. The movable contacts are installed on the side faces in the tunnel cavities and are connected with jacking mechanisms. The stationary contacts are installed on single-layer plates. The two ends of the tunnel cavities are provided with a feed mechanism and a discharge mechanism correspondingly. The other ends of the feed mechanism and the discharge mechanism are provided with a feed pull belt and a discharge pull belt correspondingly. The side edges of the tunnel cavities and the ordinary pressure plate valves are further provided with laminate backflow devices. According to the tunnel vacuum furnace, the overall occupation space of equipment is saved, overall cost of the equipment is lowered, and the risk of air leakage of an electricity box is eliminated.

Description

technical field [0001] The invention relates to the technical field of product drying, in particular to a tunnel vacuum furnace based on a single-plate reflow type. Background technique [0002] At present, there are mainly two kinds of equipment in the market, single furnace and tunnel furnace. The single-body furnace requires a separate drying room, which has high operation and maintenance costs, low production capacity, and a large floor space; the vacuum tunnel furnace has high efficiency and does not require a separate drying room, but it uses a trolley backflow method and occupies a small area. It is relatively large; at the same time, the electric box is controlled to move with the trolley, and the air from the outside of the cavity enters the electric box of the trolley inside the cavity for cooling, which is prone to air leakage; and the loading and unloading module is more complicated and the cost is high. On the basis of the tunnel furnace, the present invention ...

AI Technical Summary

Problems solved by technology

The single-body furnace requires a separate drying room, which has high operation and maintenance costs, low production capacity, and a large floor space; the vacuum tunnel furnace has high efficiency and does not require a separate drying room, but it uses a trolley backflow method and occupies a small area. Relatively large; at the same time, the electric box is controlled to move with the trolley, and the air from the outside of the cavity enters the electric box of the trolley inside the cavity for cooling, which is prone to air leakage; and the loading and unloading module is more complicated and costly

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