Steam heater

Abstract

A steam heater is provided. A cavity 2 is horizontally mounted on a support base 1 through a lateral positioning surface 3 and a longitudinal positioning surface 4. A group of separating plates 5 respectively divide a container into a group of chambers, and each cavity is communicated end to end. A steam inlet 7 and a condensate outlet 8 are respectively communicated with a chamber in the cavity 2. A group of blowoff valves 9 are arranged on an end face of the other side of the cavity 2. The group of blowoff valves 9 are respectively communicated with the group of chambers. A principle of coilheat exchanger is used in the improved heater. Fins are arranged on an upper plate of the heater, saturated steam flows along each chamber in the cavity, to perform full heat exchange with a hot plate. Since the fins are added on the surface of the upper plate, absorption area of the upper plate is increased by 20%, and the upper plate is ensured to absorb more heat. The structure improves utilization rate of steam and improves heat energy of the heater, and is beneficial to keep temperature of the heater to be stable when the heater exchanges heat with a paper board.

Description

technical field [0001] The invention relates to a steam heater for a drying channel in a corrugated machine, in particular to a steam heater. Background technique [0002] At present, in the corrugated cardboard production line, the single-sided corrugated cardboard is preheated, glued and preheated with the surface paper, and then enters the drying tunnel for compounding. , glue and shape the corrugated cardboard and evaporate excess water to ensure qualified corrugated cardboard. Traditional heaters are generally welded with steel plates, and the interior is a chamber. Due to the limitations of the processing technology, the heating plate cannot be divided into several end-to-end chambers, resulting in insufficient exchange between the steam and the plate feeder, low steam use efficiency, and some steam is discharged from the condensate outlet, resulting in high pressure in the condensate pipe and affecting condensation. Water is normally drained and condensed water is r...

AI Technical Summary

Problems solved by technology

Due to the limitations of the processing technology, the heating plate cannot be divided into several chambers connected end to end, resulting in insufficient exchange of steam and the plate feeder, low efficiency of steam use, and some steam is discharged from the condensate outlet, resulting in high pressure in the condensate pipe and affecting condensation. Water normal drainage and condensate recovery

At the same time, there are no fins on the upper surface of the heater, and the heat exchange area is limited. Under the condition of high-speed operation of corrugated cardboard, the temperature compensation of the heater is not enough, which causes the temperature of the heater to drop, the water content of the corrugated cardboard is high, and the corrugated cardboard is bent and deformed.

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