SU591674A1

SU591674A1 - Heater of falling layer in recirculation grain dryer

Info

Publication number: SU591674A1
Application number: SU762316651A
Authority: SU
Inventors: Макс Борисович Кац; Гарий Львович Сироткин; Александр Исаакович Любошиц; Анатолий Сергеевич Зелепуга; Павел Степанович Куц; Леонид Владимирович Николайчик; Иван Петрович Вовкориз
Original assignee: Ордена Трудового Красного Знамени Институт Тепло И Массообмена Им. А.В.Лыкова Ан Белорусской Сср
Priority date: 1976-01-20
Filing date: 1976-01-20
Publication date: 1978-02-05

Description

Изобретение относитс к сушке зерна и может быть использовано в сельском хоз йстве и в системе заготовок.The invention relates to the drying of grain and can be used in agriculture and in the procurement system.

Известны подогреватели падающего сло рециркул ционных зерносушилок, имеющие в верхней части общую стенку с сушильной шахтой , а в нижней - общий тепломассобменннк.The heaters of the falling layer of the recirculation grain dryers are known; they have a common wall with a drying shaft in the upper part and a common heat and mass transfer in the lower part.

При этом такие подогревателн служат распределительной ка.мерой дл теплоносител 1At the same time, such heaters serve as a distribution meter for heat carrier 1

Недостаток данных подогревателей заключаетс в TOM, что они не обеспечивают равномерного распределени зерна и тем самым привод т -к снижению ачества сушки.The disadvantage of these preheaters lies in the TOM, that they do not ensure an even distribution of the grain and thus result in a decrease in the drying quality.

Известны также подогреватели падающего сло рециркул ционных зерносушилок, содержащие шахту с патрубками ввода и вывода сушильного агента и с поперечно разметеннымн в ней стержн ми (2.Heaters of a falling layer of recirculation grain dryers are also known, which contain a shaft with inlets and outlets for a drying agent and with transversely marked rods in it (2.

Этот подогреватель вл етс наиболее блнзким к предлагаемому по технической сущности и достигаемому результату. Однако известные подогреватели характеризуютс недостато 1но эффективной теплопередачей от стержней к зерну.This heater is the most bland to the proposed technical essence and the achieved result. However, the known heaters are characterized by insufficiently effective heat transfer from the rods to the grain.

Цель изобретени - интенсифицировать процесс нагрева.The purpose of the invention is to intensify the heating process.

Это достигаетс тем, что стержни выпол пены полыми с продатьнымн прорез ми бокоаой поверхности н подключены к источнику теплоносител , а в патрубке вывода сушильного агента установлен двухлопастной путьсатор с регулируемым числом оборотов.This is achieved by the fact that the rods are made hollow with the slots of the lateral surface and connected to the source of heat carrier, and a two-blade path with an adjustable speed is installed in the nozzle of the drying agent.

На фиг. I схематически показана зерносушилка с предлагаемым подогревателем; на фиг. 2 -разрез А-А фиг. I; на фиг. 3 -трубы подогревател . FIG. I schematically shows a grain dryer with the proposed heater; in fig. 2 is a section AA. I; in fig. 3 pipe heaters.

Рециркул ционна зерносушилка с подогревателем падающего сло содержит загрузочный бункер 1 с питател ми 2, соединенный зернопроводом 3 с норией 4, дл подачи смеси сырого и нагретого зерна по патрубку 5 в контактный тенломассообменник 6. Тепломассообменник 6 перегородкой 7 разделен на две неравные по объему шахты 8 и 9, которые соединены с охладител ми 10 и II зерна. Нижн часть охладителей 10 и 11 зерна содержнт питатели 12 н 13 дл подачи рециркул ционного зерна по патрубку 14 в норию 15 и выгрузки сухого зерна в патрубок 16.A recirculating grain dryer with a falling layer heater contains a hopper 1 with feeders 2, connected by a grain pipe 3 to noria 4, to feed a mixture of raw and heated grain through pipe 5 to contact tenlomassoobmennik 6. Heat and mass exchange 6 by partition 7 is divided into two equal unequal shafts 8 and 9, which are connected to coolers 10 and II grains. The lower part of the coolers 10 and 11 of the grain contains feeders 12 and 13 for feeding the recirculated grain through the nozzle 14 to the noria 15 and discharging the dry grain into the nozzle 16.

Claims

To ensure the drying of grain to the standard humidity, a pipe 18 is connected to the pipe 14 on the pipe of these pipes. A gate 18 is installed. The NN 15 is connected by a grain pipe 19 to the hopper 20, which serves to release and evenly distribute the recirculated grain throughout the entire area of the 21 Ahaiouiero heater elephant. (Room 21 through pipe 22 is connected to heat carrier source 23, and pipe 24 through two-bladed rotating pulsator 25 to cyclone 26 and suction fan 27. Hollow rods 28 are installed in heater 21, and the second is glued-oeline The branch pipe 29 to the heat carrier source 23. The wall of the rods 28 is provided with slots 30 for the coolant flow to exit in a horizontal direction and upwards. The recirculation grain dryer operates with a falling slab heater as follows. cargo hopper, 1 with feeder 2 directs d grain pipe 3, where simultaneously heated grain is fed in. Mixed raw and heated grain with noria 4 through pipe 5 P1 directs 7 to the heat and mass exchanger b, from where the grain is fed into shafts 8 and 9, and then to o.chemicals 10 and 1, from which the grain by the heads 12 and 13 are discharged into the pipes 14 and 16. From the bunker 2P, the mixture of raw and recirculating ze) enters the 21 Heater heater, which is at the same time in US Pat. 22 and 29 from ispitnika geplonositel 23 nfioiiiotomio grain serves pulsiruypits flow of heat.1on11sits: 1 s pace ture 200) () (1h ;. In sub-heater 21, in the zone of location of the rjng-p 28, the process of 1е1 lomasso () exchange is intensified by the mediation of turbulization of the black jet with a jet of heat-transfer fluid, from the uutMM to the gospzoital.yyum and nertik.nom n; 1p). single / trorez 30 (ter /KHf.ii 28. llaifieTtje ze) but from po.tog 1 enate. 21 is poured into a grain; o11 conductor 3, where it is meted with raw grain, and then sent to Dori. 4, a (jrpa6oT;) ninnM coolant through the nozzle j enters the cyclone 2fi to the valve; and (27 exhausts into the atmosphere) By changing the revolutions of the b / h chopper pulsator 25, the frequency of pulsations of the heat carrier flux changes in the range of 0.5-15 Hz and, consequently, the time t for unused grain in the preheater 21 is changed. Increasing the frequency of pulsations of the heat carrier flow increases the aerodynamic deceleration of the grain, which leads to an increase in the residence time in the preheater. At the same time, the grain concentration in the incident layer preheater increases compared with stationary flows of the heat transfer medium, which increases the filtration rate of the flow of heat transfer fluid through the grain layer and increases the intensity of the heating process. Claims Heater for a falling recirculation grain dryer containing a paddle with inlet and outlet nozzles of the drying agent and rods placed across the pitch, characterized in that, in order to intensify the heating process, the rods are made halfway through longitudinal slots on the side surfaces and sc; They are yucheny to the source of heat media, and in the nozzle output superspogt agent y. Sources of information received by B (J vim; 1e in the examination: Auto | .1ko: certificate, M-134212, 7/2, 970. third of all ;, etel .. (: TVP .N1 l4-J3-53, 17 / 12. 1961.,., - v, ii ..: mA L:

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FIG. g