Three kinds of ventilation heating sugar boiler machines often used at runtime to be continuously supplied to the boiler the combustion air required, and the resulting flue gas continuously drawn, a process called draft process of the boiler. Once the venting is stopped, the boiler will stop running; usually mechanically ventilated, i.e., by means of a pressure head generated by the fan to overcome smoke flow resistance of the duct. Mechanical ventilation currently used in the following three. A negative pressure ventilation chimney addition to using, the former also mounted chimney draft fan to overcome the resistance of all of the smoke, the air duct. This small capacity of ventilation, smoke wind resistance is not so large boiler system is more applicable. Second, while a balanced draft and induced draft fan blower mounted in the boiler smoke, air system. Port to the suction passage into the furnace from the wind (including through an air preheater, and a fuel combustion device layer) overcome the resistance of the entire duct fan; furnace outlet to the outlet stack (including a negative pressure outlet furnace, boiler slag tube after anti heating surface portions of the device and the dust removal) all by flue draft fan to overcome the resistance. This ventilation can effectively into the air, and the furnace flue boilers and all run under negative pressure, boiler room of the safety and health conditions better. If compared with negative pressure ventilation, boiler air leakage is small. Currently in heating boilers, the most balanced ventilation. Third, the only positive draft blower mounted in the boiler smoke in the air system, with its head against the resistance of all the smoke duct. Then the furnace and flue boiler are all working under pressure, and thus the furnace wall and door units are required tightly sealed to prevent leakage of flames and smoke high temperature hurt. This ventilation improves the strength of the heat of combustion furnace, boiler smaller volume equivalent capacity. By eliminating air leakage boiler furnace, flues, and improve the thermal efficiency of the boiler. Positive pressure ventilation, currently has applications in the oil and gas boilers. Boiler draft ventilation is generally balanced and positive pressure ventilation. These are the three common boiler ventilation method, in the process, to constantly add fuel, while also promptly clean up the burned ashes.
The picture shows the WNS series horizontal fire tube heating sugar boiler machine produced by ZG boiler. This boiler is an oil and gas boiler. It mainly uses natural gas, petroleum, light oil and heavy oil as fuel, and has the characteristics of high thermal efficiency and environmental protection.
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When the 40 tons SZS series gas and oil fired heating sugar boiler machine is running, the fuel enters the burner from the external air source, and automatically generates a high temperature flame through the automatic adjustment and automatic ignition function. The front end of the furnace enters the convection heating surface on the upper side of the burnout chamber, and then enters through the upper part of the front smoke box. the second part. The convection heating surface exits the boiler from the rear of the rear smoke box and is vented to the atmosphere. The saturated steam is generated by heating, and the working fluid is output from the main steam valve to the operating system.
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