CN2391153Y

CN2391153Y - Forward and backward grains dryer

Info

Publication number: CN2391153Y
Application number: CN 98248825
Authority: CN
Inventors: 赵小光; 崔仕勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-26
Filing date: 1998-11-26
Publication date: 2000-08-09
Anticipated expiration: 2008-11-26

Abstract

The utility model discloses a forward and backward grains dryer. The utility model is characterized in that both sides of a tower type multi-stage baking box are respectively provided with a set of hot air inlet passages, and hot air inlets are staggered at both sides of each drying box from top to bottom so that air can be alternately blown in and heated; an upper row of angle-shaped air inlet pipes and a lower row of an angle-shaped air outlet pipes are crossed or parallelly arranged; therefore, moisture grains can be forward dried and backward cooled in the process of passing through the drying boxes. The utility model solves the problems that in the process of drying operation, previous driers can not dry uniformly, the thermal efficiency is low, baking dead angles exist, etc.; the utility model is suitable for grain enterprises to dry grains.

Description

A kind of concurrent-countercurrent grain drier

The utility model relates to a kind of grain drier, belongs to two air channels air intake concurrent-countercurrent grain drier that alternately commutates.

At present, multistage concurrent-countercurrent grain drier is adopted by most grain enterprise, and particularly in the northern area of China, along with the continuous popularization of high-yield crop kind, the water content during grain harvest has the trend of rising, has brought certain difficulty to drying operation; Some producers increased more drying box, and hot blast all are the air inlets that is transported to each drying box by the hot blast air channel that is arranged on a certain side of drying machine respectively in order to strengthen the precipitation range of drying machine; Because the jet characteristics of air and the influence of pipe resistance, the change in flow that must cause dry-heat air to pass the grain layer along air intake angular tube direction is very big, makes the grain drying inequality, and angular tube is long more, and this variation is just remarkable more; Tide grain all identical situation can occur at each drying box from top to bottom in dry run, after drying operation was finished, this non-uniform phenomenon is got up in accumulation can be more serious, thereby it is inhomogeneous to cause drying by the fire the back grain moisture content, phenomenons such as dry dead angle occur.

The purpose of this utility model, provide at above-mentioned the deficiencies in the prior art exactly a kind of make damp grain final moisture content more evenly, do not have dry dead angle, an energy-efficient two air channels air intake concurrent-countercurrent grain drier that alternately commutates.

The purpose of this utility model reaches by the following technical programs: this kind concurrent-countercurrent grain drier, by scooper, grain flowing tube, the king-tower loam cake, pre-storage tank, drying box, cooler bin, air channel, a left side, right air channel, cold air duct, delivery device, the king-tower base, the cold wind blower fan, air-heater and electrical apparatus control system are formed, be characterized in: the both sides of its tower multistage drying baker respectively have one to pack into the hot blast air channel, hot-wind inlet is crisscross arranged in the both sides of each drying box from top to bottom, air inlet angular tube and exhaust angular tube two rows are right-angled intersection or are arranged in parallel, make damp grain by in the process of drying box by concurrent drying, the adverse current cooling.

Above-mentioned concurrent-countercurrent grain drier, the grain that its delivery device is discharged can be discharged outside the tower by row's grain mouth, also can enter scooper and continue cyclic drying.

The utility model compared with prior art has following advantage: because hot-wind inlet is crisscross arranged in the both sides of each drying box from top to bottom, staggered air intake heating, air inlet angular tube and exhaust angular tube two rows are right-angled intersection or are arranged in parallel, make damp grain in passing through the process of each drying box, the even phenomenon of uneven drying that causes along the angular tube direction will be compensated with opposite state by next drying box, through after what drying, make that to dry by the fire the grain moisture content that at last even, although dried by the fire damp grain at a certain drying box uneven drying like this, also can not influenced drying effect; The Design of length of angular tube also can be unrestricted so, solved the difficult problem of large-scale grain drier angular tube Design of length.

Accompanying drawing 1 is the schematic diagram of the unidirectional air intake grain drier in original single air channel;

Accompanying drawing 2 is structure charts of the present utility model.

The utility model is described in further detail below in conjunction with accompanying drawing:

By shown in Figure 2, this drying machine is made up of scooper 1, grain flowing tube 2, king-tower loam cake 3, pre-storage tank 4, drying box 5, cooler bin 11, left air channel 6, right air channel 7, cold air duct 12, delivery device 15, king-tower base 16, cold wind blower fan 13, air-heater and electrical apparatus control system (not shown); The both sides of its tower multistage drying baker respectively have one to pack into hot blast air channel (6,7), hot-wind inlet 17 is crisscross arranged in the both sides of each drying box 5 from top to bottom, air inlet angular tube 8 is right-angled intersection with exhaust angular tube 9 two rows or is arranged in parallel, and damp grain is cooled off by concurrent drying, adverse current in passing through the process of drying box.

During the drying machine real work, tide grain is sent into drying tower by scooper 1, dry-heat air is sent into the three-way pipe 14 of drying tower lower curtate by heating equipment by air-heater, import left air channel 6 and right air channel 7 respectively by three-way pipe 14 again, and then the hot-wind inlet 17 on the process drying box 5 is blown into air inlet angular tube 8, after grain layer oven dry grain is passed in following current, enter the exhaust angular tube 9 that is right-angled intersection with air inlet angular tube 8 or is arranged in parallel (being arranged crosswise among the figure), discharge outside the tower by exhaust shutter 10 again.After grain process multistage (among the figure the being six sections) aeration-drying that alternately commutates in the tower, fall into cooler bin 11, through the cold wind adverse current cooling that blowed by air-cooler 13 and cold air duct 12.Cooled grain is discharged outside the tower by delivery device 15, also can enter scooper 1 and continue cyclic drying, so far finishes the drying operation of grain.

Claims

1, a kind of concurrent-countercurrent grain drier, by scooper (1), grain flowing tube (2), king-tower loam cake (3), pre-storage tank (4), drying box (5), cooler bin (11), air channel (6), a left side, right air channel (7), cold air duct (12), delivery device (15), king-tower base (16), cold wind blower fan (13), air-heater and electrical apparatus control system are formed, it is characterized in that: the both sides of its tower multistage drying baker respectively have one to pack into hot blast air channel (6,7), hot-wind inlet (17) is crisscross arranged in the both sides of each drying box from top to bottom, and air inlet angular tube (8) is right-angled intersection with exhaust angular tube (9) two rows or is arranged in parallel.