CN2187373Y - High-effect energy-saving grain drying machine - Google Patents

Abstract

The utility model relates to a high-efficient energy-saving grain drying machine. The utility model is characterized in that the side wall of an iron angle box which is arranged in a drying tower is provided with holes, the outer layer of the drying tower body is provided with an interlayer of an air sleeve, a fume gas outlet of a hot blast stove is connected with a flue gas inlet of the drying tower by a fume gas inlet pipe, and a cooling air inlet is connected with an air distributing inlet of the drying tower by an air distributing pipe. An up stroke switch and a down stroke switch are arranged on the top of the drying tower, and the bottom of the drying tower is provided with a grain unloading mechanism of a swinging bed of a V-shaped groove. The high-effect energy-saving grain drying machine can fully use hot (cold) air flows, the drying evenness of grain can be increased, the energy saving effect is obvious, the operation is easy, and the cost is low.

Description

High-effect energy-saving grain drying machine

A kind of energy-efficient grain drier belongs to drying equipment technical field F26B.17.

Existing middle-size and small-size grain drying equipment mainly contains two types: 1. horn shape air bath type drying tower.Grain is piled up in the crack between two air drains, and heat (cold) air-flow flows into from air drain, passes the grain layer from lower opening and enters the outflow of (descending) layer air drain, and the heating of finishing grain (cooling) is anhydrated.This structure space utilization rate is higher, and not enough is that the airflow passes depth of grain layer is bigger, and blast is bigger.2. screen cloth pillar drying tower, tower body are the double wall post that about two layer screen net forms, and grain is piled up whereaboutss in double wall, and heat (cold) air-flow passes through the grain layer by screen cloth in the percolation in the tower and passes outer screen cloth discharge, and the heating of finishing grain (cooling) is anhydrated.This structure air-flow percolation depth of grain layer is less, and blast is little, and is simple in structure, but equipment is huge.These two kinds of structures respectively have characteristics, but because air-flow fails rationally to utilize, and consumed energy is big, and the grain drying uniformity is undesirable, advances, unloading operation easy break-down.

The purpose of this utility model provides a kind of advantage that possesses above-mentioned two kinds of structures, heat (cold) air-flow is made full use of, thereby reasonable energy utilization, increase the grain drying uniformity, reduce occupation area of equipment and manufacturing cost, reliable working performance, the energy-efficient grain drier of processing ease.

The purpose of this utility model is achieved in that a kind of energy-efficient grain drier, by drying tower, hot-blast stove, advance, unloading mechanism forms, be provided with the multilayer iron-made angle box in the drying tower, it is characterized in that: iron-made angle box holes at lateral wall in the drying tower, the drying tower volume surrounding is provided with the air-casing interlayer, establish inner end plate in the interlayer, barge board, be provided with smoke-intake pipe between the exhanst gas outlet of hot-blast stove and the gas approach of drying tower, be provided with aid distributing pipe between cooling air outlet and the import of drying tower air distribution, hot blast import department is provided with homogenizing plate, drying tower jacking grain mechanism establishes upper stroke switch, lower stroke switch, unloading mechanism establishes V-type groove oscillating bed at the bottom of the drying tower.

Because the utility model iron-made angle box holes at lateral wall ventilation, this crossing current mode can reduce the thickness of air-flow percolation grain layer, quickens the grain surface ability of anhydrating, and improves drying efficiency and uniform drying degree.The wherein setting of smoke-intake pipe, the flue gas heat of having utilized the hot-blast stove discharge is to grain preheating, improved the thermal efficiency, this part heat can account for 1/4 of total amount of heat, and simultaneously the waste gas air-casing interlayer of drying tower of flowing through plays insulation effect to the drying tower wall, can make drying tower internal perisporium grain temperature and center grain temperature basically identical, improved the grain drying uniformity, hot-air mouth is established homogenizing plate, can prevent that local cereal temperature is too high.To the recycling of cooling air, can make the air distribution temperature improve 20～30 ℃, save heat exhaustion.Unloading mechanism makes cross section each point grain flow velocity even with V-type groove oscillating bed mechanism, thereby guarantees that each point is equal substantially drying time, unloading velocity-stabilization, reliable.Control is automatically adopted in the control of grain position, has avoided can reducing operating personnel with returning the stifled grain problem that grain bucket control grain position often occurs.Therefore, the uniform drying degree and the energy-saving effect of the existing drying machine of the utility model obviously improve, and processing ease, low cost of manufacture.

Fig. 1 is the grain drier schematic diagram.

Fig. 2 cuts open figure for grain drier office.

Fig. 3 is a hot-blast stove fume preheating flow graph.

Fig. 4 is an air-flow percolation angle box schematic diagram.

Fig. 5 is for advancing grain mechanism controls schematic diagram.

Fig. 6 is the unloading structural scheme of mechanism.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Dry tower body of the present utility model is by the inside and outside two-layer internal layer equidirectional iron-made angle box 12 of multilayer of evenly arranging from top to bottom of forming, six layers of totally-enclosed angle box are arranged at top, two ventilation (being used for logical flue gas), (there are some delay sections the centre) such as several layers heating section of anhydrating and cooling sections arranged at middle part and bottom.Skin is provided with air-casing interlayer 13, makes dry tower body inwall in the interlayer dry up and establishes inner end plate 14, and barge board 16 is established at grain layer position relatively in the middle of interlayer.The flue gas of hot-blast stove links to each other with the gas approach 5 of drying tower by smoke-intake pipe 1, and the flue gas (about 200 ℃) through dust-removing heat exchanger 3 that hot-blast stove is discharged is sent into six layers on box 15(top, preheating angle), after circulating in airtight S type loop, flue gas discharges.Flue gas heat is conducted to grain by angle box wall, and grain is carried out preheating.Between air distribution import 8 and cooling air outlet 9, be provided with aid distributing pipe 2, the hot blast that hot-blast stove is sent (about 170 ℃) is sent into dry tower body through hot blast import 7, mix with air distribution (about 60 ℃) and to form that 140 ℃, 110 ℃, 90 ℃ three strands of hot blasts are sent into bringing-up section, the heating section of anhydrating respectively and at a slow speed in the angle with holes box of the section of anhydrating, hot blast enters and passes the grain layer grain is heated, anhydrates through box hole, angle, penetrate the air-casing interlayer of arranging the drying tower volume surrounding in the box of exhaust with holes angle again, discharge from dry cat head then.The hot-air mouth place establishes the homogenizing plate 6 that has hole, prevents that local grain temperature is too high.Cooling air enters flow inlet angle box 17 from air inlet 11, passes to enter exhaust angle box 18 after the grain layer absorbs heat, and is blown into aid distributing pipe 2 through cooling air outlet by blower fan and arrives air distributions inlet 8, makes the air distribution temperature improve 20～30 ℃.Raw grain is delivered to dry cat head material inlet 4 by bucket elevator and is entered in the drying tower after the rotary screen dedusting; grain is piled up rising after advancing drying tower; when rising to dry cat head lower stroke switch 22; promote push pedal 23 down; switch motion makes the electrical control cubicles indicator lamp show (showing that grain has arrived the cat head position); grain continues to rise to upper stroke switch 20, and promotes to go up push pedal 21, and lifting means is shut down.Unloading mechanism rotates the eccentric wheel drivening rod by buncher and makes the oscillating bed swing, and grain imports oscillating bed 25 by leading grain groove 24, and the bucket that evenly falls to entering to slip through misplacing draws off grain.Adjust the rotating speed of buncher, can increase or reduce the hunting frequency of oscillating bed, thereby increase or reduce unloading speed.Raw grain is by slowly moving down along the angle outer wall from focusing in the drying tower, heat, anhydrates, cools off through the air-flow of different temperatures, reaches the dry back that requires and discharged by unloading mouth 10, raw grain about 2～3 hours from import to one-tenth grain tap-off cycle.

Claims (1)

1, a kind of energy-efficient grain drier, by drying tower, hot-blast stove, advance, unloading mechanism forms, be provided with the multilayer iron-made angle box in the drying tower, it is characterized in that: iron-made angle box holes at lateral wall (19) in the drying tower, the drying tower volume surrounding is provided with air-casing interlayer (13), establish inner end plate (14) in the interlayer, barge board (16), be provided with smoke-intake pipe (1) between the exhanst gas outlet of hot-blast stove and the gas approach of drying tower (5), be provided with aid distributing pipe (2) between cooling air outlet (9) and the drying tower air distribution import (8), hot blast import department is provided with homogenizing plate (7), drying tower jacking grain mechanism establishes upper stroke switch (20), lower stroke switch (22), unloading mechanism establishes V-type groove oscillating bed (10) at the bottom of the drying tower.

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