SU1004727A2

SU1004727A2 - Rotary kiln chain curtain

Info

Publication number: SU1004727A2
Application number: SU813332134A
Authority: SU
Inventors: Виталий Алексеевич Чурюмов
Original assignee: за витель ЙСРС, ----V-Sif -nstto. (Siff a««:r.« и В.А.Чурюмов -SSj|; -i.-.. iiij. iA
Priority date: 1981-09-02
Filing date: 1981-09-02
Publication date: 1983-03-15

Description

(St) ЦЕПНАЯ ЗАВЕСА ВРАЩАЮЩЕЙСЯ ПЕЧИ(St) CHAIN CURTAIN ROTATING FURNACE

Изобретение относитс к технике обжига материалов во вращающихс печах и может быть использовано в промышленности строительных материалов.This invention relates to a technique of burning materials in rotary kilns and can be used in the building materials industry.

По основному авт. ев, № 935690 известна цепна завеса вращающейс печи, содержаи:(а прикрепленные к внутренней поверхности корпуса печи за оба конца р ды цепей, снабженна замкнутыми элементами, свободно охватывающими каждую цепь и зажимающими часть ее длины 1 },According to the main author. Ev. No. 935690 is known for the chain-curtain of the rotary kiln, containing:

В такой завесе цепи все врем очищаютс замкнутыми элементами, что обеспечивает контакт с материалом и газами очищенной цепи, что более эффективно с точки зрени теплообмена , так как теплопередача между металлом цепи и материалом лучше, чем между налипшим на цепи материалом и материалом в печи.In such a curtain, the chains are cleaned all the time by closed elements, which ensures contact with the material and gases of the purified chain, which is more efficient from the point of view of heat exchange, since heat transfer between the metal of the chain and the material is better than between the material and material adhering to the chain in the furnace.

Недостатком известного теплообмена ап етс его низка эффективность.A disadvantage of the known heat transfer is its low efficiency.

так как мала поверхность теплообмена каждой цепи.as the heat exchange surface of each chain is small.

Целью изобретени вл етс повышение эффективности теплообмена.The aim of the invention is to increase the heat exchange efficiency.

Указанна цель достигаетс тем, что в цепной завесе вращающейс печи замкнутые элементы расположены по всей длине цепи.This goal is achieved by the fact that in the chain curtain of the rotary kiln closed elements are located along the entire length of the chain.

При этом замкнутые элементы выполнены в виде пружин или конусов.In this case, the closed elements are made in the form of springs or cones.

Кроме того, пружины надеты одна на другую и соприкасающиес пружины выполнены с противоположным направлением витков.In addition, the springs are worn one on top of the other and the contact springs are made with the opposite direction of the turns.

В такой цепной завесе за счет надетых на цепи полых замкнутых элементов возрастает поверхность теплообмена при обеспечении взаимной очистки всех элементов.In such a chain curtain, due to the hollow closed elements worn on the chains, the heat exchange surface increases, while ensuring mutual cleaning of all the elements.

На чертеже показана печь с предлагаемой цепной завесой, поперечный разрез.The drawing shows a furnace with the proposed chain curtain, a cross-section.

Claims

Inside the furnace 1, chains 3 are hung on the elements of the fastening 2. On chains x 3 there are hollow closed elements that can be made of, for example, a cone k or springs 5, etc. The length of each chain 3 and their number is determined thermal calculation taking into account the design of the heat exchanger, which can have any other pattern of arrangement of chains 3. In the variant with cones 4, their dimensions are determined from the condition of free movement along chain 3 "The smaller diameter equals 1.13 cross sections of chain link 3 the larger one is 1.5–2 times the size of the smaller one. The length is taken equal to 1-2 sizes of larger diameter, and all maximum sizes are taken with larger sizes of granules in order to destroy them less. Hollow closed elements can be made of another shape. In the variant with springs 5, their length is taken from 0.6-0.99 lengths of chain 3. The helix of spring 5 is taken depending on the size of the granules (the larger the granules, the greater the pitch). The step size is taken equal to 0.1–1 of the maximum size of the chain link 3 “The diameter of the spring bar 5 is taken from the thermal calculation (the larger the diameter, the greater the heat exchange surface). The internal diameter of the spring S is taken equal to 1.1–2 of the size of a link in chain 3 The external spring 5 has the direction of a turn opposite to the internal spring 5 and the diameter is equal to 1.1–2 of the diameter of the internal spring 5 “The curtain chain works as follows. When the furnace 1 rotates, the chains 3 with hollow cones C or springs 5 rotate with it. In the upper position of the chain 3 the cones k or springs 5 are heated by hot gases, and in the lower position they give off heat to the material. At the same time, the cone or spring 5 cleans the chains 3 and cleans itself of adhered material. The use of the proposed chain curtain increases heat exchange efficiency by increasing the heat exchange surface and improving the cleaning of the elements. This provides fuel savings. Claims 1. Chain curtain of rotary kiln according to ed. St. No. 935690, characterized in that, for the purpose of heat exchange efficiency, closed elements are located along the entire length of the chain,

2. Curtain according to claim 1, characterized in that the closed elements are made in the form of spring-loaded cones. The veil of the primer is 2, characterized in that it is worn one on top of the other and the contacting springs are made with the opposite direction of the coils. Sources of information taken into account in the examination of the USSR Copyright Certificate of the USSR No. 935690, Clo F 27 V 7/18, 1980 (prototype).