CN2485591Y

CN2485591Y - Furnace body of cereal drier

Info

Publication number: CN2485591Y
Application number: CN 01241415
Authority: CN
Inventors: 曹顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-28
Filing date: 2001-04-28
Publication date: 2002-04-10
Anticipated expiration: 2011-04-28

Abstract

The utility model relates to a kilning body used in the foodstuff drier, comprising a firebox 1, a package casing 5, radiator pipe groups 3.1 to 3 whose two ends are fixed by tube plates 4.1 to 3, which is characterized in that the whole kilning body is provided with package casing 5, the three radiator pipe groups 3.1 to 3 are separated into a smoke box, a first wind box, a cigarette ash settling chamber and a second wind box by the wall of the firebox 1, a roof plate 2, a side riser 7 and a clapboard 8 in the package casing 5; the unit heat consumption is not more than 4.8 to 5.0 MJ / KJ, H2O; the recovery ratio of waste heat: when the ambient humidity is 7 DEG C, the temperature of the recovery gas achieves 35 to 36 DEG C, the energy consumption of the utility model is lower than the energy consumption of the prior domestic drying apparatus.

Description

The body of heater of grain drier

The utility model relates to the furnace binding of drying equipment, a kind of body of heater of grain drier.

Present domestic foodstuff drying device is summarized narration with the furnace binding of hot-blast stove and is had following defective: the one, and no waste heat recovery or recovering effect heterodyne, the 2nd, superfluous cold air amount is big; The 3rd, body of heater is huge; The 4th, heat transfer zone has the dead angle; The 5th, the ash disposal difficulty influences the thermal efficiency.

The purpose of this utility model is intended to overcome above-mentioned shortcoming, and a kind of low consumption, the body of heater of grain drier efficiently are provided.

A kind of body of heater of grain drier comprises combustion chamber 1, and cladding housing 5, by the fixing heat radiation nest of tubes 3.1-3 at two ends of tube sheet 4.1-3 is characterized in that whole body of heater all has cladding housing 5, and the high temperature position of relative body of heater all has several holes on cladding housing 5; The upper end tube sheet 4.1 of first group of heat exchanger tube nest of tubes 3.1 is a smoke-box with the space that combustion chamber 1, cant board 7, top board 2 constitute; The mezzanine space of top board 2 and combustion chamber 1 lateral wall and housing 5 is first air compartment; First group of pipe group 3.1 lower end is smoke-box and ash fall chamber, and the space of nest of tubes between the tube sheet 4.1-3 and combustion chamber 1 sidewall is second air compartment, and its end face is a hot-blast outlet 12; Lower perforated plate 4.3 axially is separated out another space between jointly to expansion chamber bottom and cant board 7 by dividing plate 8; Cigarette outlet at the one end is connected by the air pipe line diffuser 11 of blower fan with housing 5 tops with sleeve pipe 9.

The design also takes into full account the recycling to heat energy when considering to prolong combustion chamber 2 life-spans of top board, establish smoke-box and first air compartment that blower fan and diffuser are arranged for this reason; For strengthening exchange capability of heat, three groups of heat exchanger tube nest of tubes of the design constitute second air compartment, it not only makes outside cold wind from being blown into perpendicular to the heat exchanger tube direction, but also make full use of housing relatively-high temperature hole partly, increase the input of cold air, thereby guarantee that heat exchange is abundant, reach the design effect that heat conduction efficiency is high and prolong converter life.Flue residue heat is entered wind groove 10 through the diffuser 11 that sleeve pipe 9 returns cladding housing 5 tops, not only energy-conservation but also prolonged service life of heat exchanger tube and top board 2.Remarkable advantage: every technical indicator is starkly lower than national standard: the specific heat consumption of GB GB/T 16714-1996 is no more than 8.0MJ/KJ.H ₂O, and the design's specific heat consumption is no more than 4.8-5.0MJ/KJ.H ₂O, waste heat recovery rate: when ambient humidity is 7 ℃, reclaims flue-gas temperature and reach 35-36 ℃, be lower than the energy consumption of present domestic dryer.Economic indicator: grain heat-drying cost: every reduction moisture content 1%/ton-grain, direct cost is less than 1.20 yuan.Dry a ton-grain, reduce to 14.5% at corn moisture content by 20.8%, under the situation of precipitation 6.3%, the oven dry expense is 9.04 yuan/ton, 1.43 yuan/* of unit costs 1%.Wherein: electricity price is by unit/ton O.73,2.42 yuan/ton of the electricity charge; 225 yuan of/ton meters of coal price, coal takes 3.75 yuan/ton; Artificial 5 people, everyone every month 500 yuan of meters, labour cost is unit/ton O.865; 2.00 yuan/ton of depreciation of equipment.Baking back quality is not found baking paste grain, and the corn color and luster does not have significant change, and broken kernel only increases by 0.6%; The crackle rate: GB corn crackle rate 35%, and this equipment processing be less than 3%, far below general dryer baking back grain crusher rate.This dryer is an indirect, oven dry cereal sanitation and hygiene.The oven dry amount is 10-12T/H, is applicable to general medium and small grain depot instructions for use.

Fig. 1 is the body of heater of grain drier;

Fig. 2 is the body of heater that has only first group of heat exchanger tube nest of tubes 3.1:

Embodiment:

The body of heater of grain drier; Comprise combustion chamber 1, cladding housing 5, by the fixing heat radiation nest of tubes 3.1-3 at two ends of tube sheet 4.1-3, tube sheet 4.1-3 will the row of number radiating tube in the end, the middle part fixes the nest of tubes of formation marshalling.The top that it is characterized in that combustion chamber 1 lacks the shape body for circle, and its semicircle nose, tube sheet 4.1, cant board 7 are smoke-box with the space that top board 2 vertical connections also extend, and the mezzanine space of top board 2 and combustion chamber 1 lateral wall and housing 5 is first air compartment; The middle part tube sheet of second and third group heat exchanger tube nest of tubes 3.2,3.3 upper end tube sheets and first group of heat exchanger tube nest of tubes 3.1 is same tube sheet 4.2, the space of the sidewall of between the pipe of upper and lower tube sheet 4.1,4.3 and sagging plate 4.2 above and below and combustion chamber 1 is second air compartment, and its end face is a hot-blast outlet 12; First group of heat exchanger tube nest of tubes 3.1 lower end is smoke-box and ash fall chamber, and second and third group heat exchanger tube nest of tubes 3.2,3.3 is by dividing plate 8 axially-spaceds; Lower perforated plate 4.3 is separated out another space by dividing plate 8 to expansion chamber bottom and cant board 7 between jointly; Cigarette outlet at the one end is connected by the air pipe line diffuser 11 of blower fan with housing 5 tops with sleeve pipe 9.

The height that is uneven in length of first group of heat exchanger tube nest of tubes 3.1, high and low end is oblique line; It is contour that its high-end and combustion chamber 1 circle lacks low side, and the tube sheet 4.1 that is fixed on first group of heat exchanger tube nest of tubes 3.1 upper end joins high-end and the top board 2 of pipe, and the low side of pipe is inserted on the wall of the scarce side of combustion chamber 1 circle and visits in the combustion chamber and stretch in the inclined-plane at an angle; Tube sheet 4 hinders smoke with the space outerpace of 1 low side intersection area, combustion chamber by the inclined-plane that refractory material builds up filling space.

First air compartment has beam wind groove 10 between top board 2 and cladding housing 5, be suspended on housing 5 inwalls at relative position, also has vertical fresh air inlet on the housing 5 at this position, and is corresponding with the mouth of wind groove 10, and diffuser 11 is arranged on the fresh air inlet.

Vertically be fixed with several tubular air channels 6 between high-end and housing 5 inwalls of first group of heat exchanger tube nest of tubes 3.1, the residue strip that is housing 5 end faces of underlap with air channel 6 partly is removed, and forms gap.

Second, third group heat exchanger tube nest of tubes 3.2,3.3 can be cancelled, and directly is connected hot-blast outlet 2 by tube sheet 4.2 with first group of heat exchanger tube nest of tubes 3.1 between the lower perforated plate 4.3.

Hot blast forms: first kind of mode: the roaring flame of combustion chamber 1 is except that directly conducting the heat by the tube sheet .4.1 that inserts, thermal plume pours into first group of heat exchanger tube nest of tubes 3.1 and heating through smoke-box, cigarette ash falls into expansion chamber, thermal current is then returned up by second group of heat exchanger tube nest of tubes 3.2, fold into the 3rd group of heat exchanger tube nest of tubes 3.3 again, finish heat transfer process; The second way: cold wind directly enters first air compartment by the hole on housing 5 windward grooves 10 and housing 5 walls, and by the pre-hot blast in the middle of heat exchange blower fan recovery smoke-box and the smoke pipe outer layer sleeve 9, send into by air pipe line diffuser 11 in the interlayer heat exchange wind path of top board 2 and housing 5, to top board 2 forced heat-exchangings, and the hot blast that reclaims do not delivered to with not running off first group of heat exchanger tube nest of tubes 3.1 top of the upper perforated plate 4.1 that forms second air compartment and sagging plate 4.2 by cylinder air channel 6; The third mode: cool exterior air is turned back through lower part to combustion chamber 1 sidewall that the gap position and cylinder ventilating duct 6 gaps of housing 5 directly are blown into nest of tubes 3.1, again by nest of tubes 3.1 between sagging plate 4.2 and the lower perforated plate 4.3 and 3.2 heating, again by returning up before the dividing plate 8, from nest of tubes 3.3 times, send in the drying machine by hot-blast outlet 12.

Claims

1, a kind of body of heater of grain drier, comprise combustion chamber (1), cladding housing (5), by the fixing heat exchanger tube nest of tubes (3.1-3) at two ends of tube sheet (4.1-3), it is characterized in that whole body of heater all has cladding housing (5) outward, and the high temperature position of relative body of heater all has several holes on housing (5); The upper end tube sheet (4.1) of first group of heat exchanger tube nest of tubes (3.1) is a smoke-box with the space that cant board (7), combustion chamber (1), top board (2) constitute; The mezzanine space of the lateral wall of top board (2) and combustion chamber (1) and housing (5) is first air compartment; The middle part tube sheet of second and third group heat exchanger tube nest of tubes (3.2), (3.3) upper end tube sheet and first group of heat exchanger tube nest of tubes (3.1) is same tube sheet (4.2), the space that the scarce low side sidewall spacers of the above and below of upper and lower tube sheet (4.1), (4.3) and sagging plate (4.2) and the circle of combustion chamber (1) goes out is second air compartment, and its end face is hot-blast outlet (12); First group of heat exchanger tube nest of tubes (3.1) lower end is smoke-box and ash fall chamber, and lower perforated plate (4.3) is separated out another space by the axial dividing plate (8) between second and third group heat exchanger tube nest of tubes (3.2), (3.3) to expansion chamber bottom and cant board (7) between jointly; Cigarette outlet at the one end is connected by the air pipe line diffuser (11) of blower fan with housing (5) top with sleeve pipe (9).

2, the body of heater of grain drier according to claim 1 is characterized in that the height that is uneven in length of first group of heat exchanger tube nest of tubes (3.1), and high and low end is oblique line; It is high-end contour with the scarce low side of combustion chamber (1) circle, the tube sheet (4.1) that is fixed on first group of heat exchanger tube nest of tubes (3.1) upper end joins high-end and the top board (2) of nest of tubes (3.1), and the low side of nest of tubes (3.1) is inserted on the wall of the scarce side of combustion chamber circle and visits in the combustion chamber and stretch in the inclined-plane at an angle; Tube sheet (4.1) builds up resistance smoke in inclined-plane with the space outerpace of low end wall intersection area, combustion chamber (1) by refractory material.

3, the body of heater of grain drier according to claim 1, it is characterized in that first air compartment has beam wind groove (10) between top board (2) and cladding housing (5), be suspended on housing (5) inwall at relative position, the housing at this position also has vertical fresh air inlet on (5), corresponding with the mouth of wind groove (10), diffuser (11) is arranged on the fresh air inlet; Between high-end tube sheet (4.1) of first group of heat exchanger tube nest of tubes (3.1) and housing (5) inwall, vertically be fixed with several tubular air channels (6); The residue strip that is housing (5) end face of lateral extension line with nest of tubes (3.1) partly is removed.

4, the body of heater of grain drier according to claim 1, it is characterized in that second and third group heat exchanger tube nest of tubes (3.2), (3.3) can cancel, tube sheet (4.2) can directly be connected hot-blast outlet (12) with first group of heat exchanger tube nest of tubes (3.1) bottom between the lower perforated plate (4.3).