Spiral type tube type radiator

Abstract

The utility model relates to a helical-tubing radiator in a rotary steam heat drying device applicable to a plurality of industries such as paper-making, printing and dyeing, timbering and food, which is characterized in that the ribs of two spokes are provided with N steam passages; one end of each steam passage of the spoke at the inlet end is communicated with the air inlet of a rotary joint by a hollow mandrel; the other end is communicated with N helical-tubing radiation pipes which are fixedly connected in the internal wall of a roller body cavity; the other end of the helical-tubing radiation pipes is connected with the spoke at the end of return water; a central return water pipe is sleeve-jointed with the hollow mandrel of the spoke at the end of return water and the return water pipe is communicated with the return water outlet of the rotary joint by the hollow mandrel of the spoke at the end of air inlet. The utility model has the advantages that the radiator in the structure only heats at the external surface or internal surface of the roller and the steam condensed water can discharge automatically, which can eliminate the tube radiator, radically solve the problem in paper-making and printing and dyeing industries that the discharge of steam condensed water in the steam drying tube in the structure of a siphon tube is not complete, lower the class of pressurization of the drying tube and fulfill the goals of steam saving, heating efficiency improving, power saving and safe utilization.

Description

technical field [0001] The invention belongs to steam heating and drying equipment, in particular to a spiral tubular radiator suitable for various industries such as papermaking, printing and dyeing, wood and food. Background technique [0002] The structure of the current drum-type steam-heated drying drum is shown in Figure 5-8. 1. The structure of the drying drum used in the papermaking and printing and dyeing industries adopts the steam inlet and water outlet on the same side, and the rotary joint supplies steam, and the steam directly enters the drum. Inside, the steam condensed water is connected to the drain port of the rotary joint through the siphon pipe; 2. For example, the structure of the drying drum in the food processing industry is a drum body and two end covers. A number of tubes arranged on its circumference form a tube bundle and communicate with the central steam pipe. The middle of the steam pipe is blocked, and the steam pipe is divided into two section...

AI Technical Summary

Problems solved by technology

The disadvantages of the above three commonly used drying drums are as follows: one is that the distance between the tube bundle heating tubes and the central return pipe is not equal, and the tubes on the periphery of the tube bundle contact the material, resulting in a large amount of steam condensate, while the tubes near the central return pipe Because of its small heat dissipation and high return water pressure, it blocks the drainage of the peripheral tubes, resulting in low overall thermal efficiency of the tube bundle, resulting in waste of steam and low drying efficiency; the second is the rotary drying drum in the paper industry, which uses a siphon structure to eliminate steam condensation There is always a part of the condensed water at the bottom of the cylinder that cannot be discharged, resulting in low heating efficiency; the third is that the rotating drum used in the paper industry is a pressure container, and the material is generally cast. The wall thickness is too large and the weight is too heavy, resulting in rotation The heating speed of the drum is slow, the production efficiency is low, the power consumption is large, and the safety factor is low

Images