SU754177A1

SU754177A1 - Loose material dryer

Info

Publication number: SU754177A1
Application number: SU782572252A
Authority: SU
Inventors: Николай Данилович Байлук; Валерий Дмитриевич Сизов; Владимир Александрович Зимин
Original assignee: Проектно-Технологический Институт "Сельхозтехпроект"
Priority date: 1978-01-16
Filing date: 1978-01-16
Publication date: 1980-08-07

Description

(54) СУТиИЛКА ДЛЯ СЫПУЧИХ МАТЕРИАЛОВ(54) SUSTAINABLE FOR BULK MATERIALS

1one

Изобретение относитс к технике сушки сыпучих материалов и может быть использовано дл сушки сельхозпродуктов , в частности зерна. сThe invention relates to a technique for drying bulk materials and can be used for drying agricultural products, in particular, grain. with

Известны сушилки дл сыпучих материалов , содержащие вертикальную кольцевую камеру, образованную двум соосно расположенными цилиндрами с перфорированными стенками,и JQ нагреватель l .Dryers for bulk materials are known, comprising a vertical annular chamber formed by two coaxially arranged cylinders with perforated walls, and a JQ heater l.

Недостаток таких сушилок заключаетс в том, что центргипьноё размещение нагревател ведет к перегреву материала, размещенного вокруг внут- 15 неннего цилиндра, и недогреву материала , размещенного около наружного цилиндра. Это объ сн етс тем, что площадь поверхности наружного цилиндра в несколько раз больше площади 20 поверхности внутреннего, за счет чего -уменьшаетс и объем воздуха, проход щего -через единицу площади цилиндра, и его скорость, т.е. количество тепла/ приход щеес на единицу объема зерна,25 уменьшаетс .The disadvantage of such dryers is that the center positioning of the heater leads to overheating of the material placed around the inner cylinder and underheating of the material placed near the outer cylinder. This is due to the fact that the surface area of the outer cylinder is several times larger than the surface area 20 of the inner one, due to which the volume of air passing through the unit area of the cylinder and its speed, i.e. the amount of heat / input per unit volume of grain, 25 decreases.

Кроме того, высота (длина) сушильной зоны в известных сушилках ограничена из-за опасности местного перегрева . 30In addition, the height (length) of the drying zone in the known dryers is limited due to the danger of local overheating. thirty

Известны также сушилки дл сыпучих материалов, содержащие концентрично расположенные перфорированные цилиндры , образующие кольцевую сушильную камеру с центральным коллектором дл теплоносител , проход щего через материал в радиальном направлении и размещенные снаружи коаксиально цилиндрам электрические нагреватели. Кроме того, нагреватели размещены и внутри кольцевой камеры 2 .Dryers for bulk materials are also known, containing concentrically arranged perforated cylinders, which form an annular drying chamber with a central collector for a heat transfer fluid passing through the material in the radial direction and placed outside of the coaxial cylinder electrical heaters. In addition, the heaters are placed inside the annular chamber 2.

Однако такие сушилки характеризуютс значительными затратами электроэнергии и конструктивной сложностью. Кроме того, они не обеспечивают регулировани процесса сушки.However, such dryers are characterized by significant energy costs and structural complexity. In addition, they do not regulate the drying process.

Цель изобретени - регулирование процесса сушки и обеспечение осциллирующего режима.The purpose of the invention is to regulate the drying process and provide an oscillating mode.

Это достигаетс тем, что на внешней поверхности наружного диаметра шарнирно укреплены направл ющие лопатки , расположенные равномерно по высоте с образованием интервалов причем нагреватели размещены между лопатками через один интервал.This is achieved by the fact that on the outer surface of the outer diameter pivotally fixed guide vanes are uniformly distributed in height with the formation of intervals, with the heaters placed between the blades at a single interval.

Claims

FIG. 1 shows schematically the described dryer; FIG. 2 section aa of FIG. in fig. 3 — node 1 of FIG. 1 (on an enlarged scale) with the horizontal position of the blades (a), with the position of the blades with the formation of a diffuser (b), with the position of the blades with the formation of a confuser. (C) The dryer consists of external 1 and internal 2 perforated cylinders forming the hollow chamber 3 1 FOR placement of grain. The outer treadmill 1 in the upper part ends in a socket 4 for uniform loading and in the lower part a discharge valve 5. In the inner cylinder 2, exhaust fans 6 are placed at the top and bottom. The outer cylinder 1 is equipped with guide vanes 7 along its entire height for adjusting the slotted spaces g, d on hinges 8. Between the blades 7, spacers 1 and 2 are placed coaxially over cylinders 1 and 2, for example electric, with a gap relative to cylinder 1, which excludes local overheating of heat conduction grain and ensure heat transfer only by convection. The dryer is equipped with transport frames 10 and 11. The dryer operates as follows. Grain after cleaning by conveyor 10 of the cleaning machine is fed through socket 4 into chamber 3. At this stage, fans b and heaters 9 are turned on. If grain with 18% humidity comes in for drying and at 60% relative humidity, heaters 9 can be turned off. When passing through the annular chamber 3, the grain alternately exposes to warm, then cold air. Warm air enters the grain through the slit space, heated from heaters 9 and cold through the slit space, e. The blades 7 give the required air flow to the air, and as a result of changing the blades 7 of the slit space and its temperature. Due to the constant alternation of heating and cooling of the grain, the drying process is intensive and without overheating. Further, through the shutter 5, the dried grain is removed to the discharge conveyor 11. The use of the proposed dryer allows to significantly increase the speed of drying the grain. DETAILED DESCRIPTION OF THE INVENTION Dryer for bulk materials containing perforated cylinders located in the condenser, forming an annular drying chamber with a central collector for a heat transfer fluid passing through the material in the radial direction, and heaters placed outside the coaxial cylinders, characterized in that, in order to regulate the process drying and providing an oscillating mode, on the outer surface of the outer cylinder are hinged guide vanes, which are evenly spaced in height with development of inti ryval, and the heaters are placed between the blades through a single interval. Sources of information taken into account in the examination 1. The author's certificate of the USSR 131269, cl. F 26 B 17/12, 1961.

2. USSR author's certificate number 566093, cl. F 26 V 17/12, 1975 (prototype). liMy -Я--: m -3-: -..- 4. :: i "m -1: -v-7 N. -M / W ;;;; /: V: T - ;: V.-.- -