Yayın Zamanı:December 17, 2019
Döner fırın nedir?
Güvenli ve dayanıklı döner fırın Çözümleri, Large döner fırın manufacturer in China
Rotary kiln produced by PENGFEI can be divided into cement döner fırın, metallurgical döner fırın, chemical döner fırın or active lime döner fırın.
Working principle of döner fırıns:
The kiln is a cylindrical vessel, inclined slightly from the horizontal, which is rotated slowly about its longitudinal axis. bu process feedstock is fed into the upper end of the cylinder. As the kiln rotates, material gradually moves down toward the lower end, and may undergo a certain amount of stirring and mixing. Hot gases pass along the kiln, sometimes in the same direction as the process material (co-current), but usually in the opposite direction (counter-current). bu hot gases may be generated in an external furnace, or may be generated by a flame inside the kiln. Such a flame is projected from a burner-pipe (or "firing pipe") which acts like a large Bunsen brülör. bu yakıt Bunun için gaz, petrol, toz haline getirilmiş petrol koku veya toz haline getirilmiş kömür olabilir.Structure of döner fırıns:
Cement döner fırıns are mainly composed of:| Fırın kabuğu | Destek silindiri cihazı | İtme silindiri cihazı | Fırın giriş sızdırmazlığı |
| Fırın çıkış sızdırmazlığı | Lastik | Fırın davlumbazı | Fırın tahrik sistemi |
Fırın kabuğu:
Çapı 6.9m ve uzunluğu 230m olabilen karbon çelik levhadan yapılmış bir silindirdir.
Destek silindiri cihazı
Destek silindiri cihazı is mainly composed of support roller, support roller shaft,bearing, bearing liner, bearing bush, etc. It is used to support the döner fırın and the support roller will directly contact the tyres.
Lastik:
Lastik sometimes is called the riding rings, normally it is a single circular casting ring or forging ring with a smooth surface. buy are installed to the outer surface of kiln shell via some ingenious design as the tyres shall attach to the kiln shell closely meanwhile it allows the thermal movement. Lastik will be supported by a pairs of support rollers which are also machined with smooth surface with the distance in half of the kiln diameter. This structure must allow rotation as nearly Sürtünmesiz mümkün olduğunca.
İtme silindiri cihazı:
İtme silindiri cihazı mainly is divided into hydraulic thrust roller device and mechanical thrust roller device which are used for keeping the safety operation of döner fırıns.
Fırın giriş sızdırmazlığı and kiln outlet sealing:
Rotary kiln sealings are used at kiln inlet and kiln outlet, while kiln outlet is the high temperature side of döner fırıns with the temperature more than 300 °CBununla birlikte, fırın girişinin sıcaklığı daha düşüktür, ancak yüksek negatif basınç altındadır, bu nedenle ısı tüketimi ve güç tüketiminin garanti edilebilmesi için sızdırmazlık koşulu hem fırın girişi hem de fırın çıkışı için iyi olmalıdır.
Fırın davlumbazı:
Fırın davlumbazı is an important part of döner fırın mainly used for collecting clinker to prevent leakage, meanwhile the hot air from cooler via the exhaust fan will be sent into kiln to adequately use the waste heat and reduce the heat consumption.
Fırın tahrik sistemi:
Fırın tahrik sistemi is composed of girth gear, pinion, motor, reducer, etc. Girth gear is casting parts with two halves, pinion is forging parts, brand of motor and reducer depends on the customers’ Gereksinim -leri.
