CN2032697U

CN2032697U - Square metallic tubeless hot-blast stove

Info

Publication number: CN2032697U
Application number: CN 88202234
Authority: CN
Inventors: 赵振锋
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-03-22
Filing date: 1988-03-22
Publication date: 1989-02-15

Abstract

The utility model discloses a square metallic tubeless hot-blast stove matched with the material drying apparatus, which is characterized in that the whole hot-blast stove adopts the integral square metallic structure. The square metallic tubeless hot-blast stove comprises a hot-blast monitoring and controlling device, an air adjusting valve, a cooling tank, a dust remover, etc. The stove core is welded by a square tube, a square and round changing tube and a round elbow tube, which enlarges the thermal radiation surface of the stove core. A plurality of upper flues and lower wind channels are arranged in the stove body, which ensures the uniformity of the heat exchange surface of the stove body. The utility model has the advantages of high thermal efficiency, low cost, high automatization, and convenient transportation; in addition, the utility model is convenient to hoist and fix. The utility model also has reasonable structure which is not easy to deform.

Description

Square metallic tubeless hot-blast stove

The utility model belongs to a kind of device of supplying hot-air, specifically belongs to a kind of and baking room or the matching used hot-blast stove of drying box.

As everyone knows, drying is one of critical process of various agricultural-product processing, and hot-blast stove is the core part in all drying equipments.At present, China uses based on coal, firewood etc. and mainly contains two major types as the indirect thermal wind furnace of fuel: a kind of is the transverse tube type hot-blast stove that adopts heat convection, and this hot-blast stove descends array of pipes facing to red-hot solid fuel most, bears the malleation heat radiation of thermal source in the burner hearth, and upper strata pipe blocking owing to lower floor's pipe, be difficult for accepting the radiant heat of fuel bed, simultaneously, the time one is of a specified duration, make the tube wall accumulated soot, easy to clean does not cause the thermal efficiency lower, generally only accounts for about 45%.In addition, the orlop pipe is again because near the red-hot fuel bed that is burning, thermic load is very big, causes pipe very easily to damage, and influences the service life of whole stove; Another type stove is the pipe free hot-blast stove that is vigorously promoting the use at present, WR-15 type and WR-22 type pipe free hot-blast stove as Sichuan Prov. Agricultual Machinery Inst.'s development, see " Sichuan agricultural machinery " 84 year the 2nd phase, it is a kind of hot-blast stove based on radiation heat transfer.This hot-blast stove is combined by the smokejack (being lower flue) of metal body of heater and civil engineering and constitutes, and advantage is a thermal efficiency height, does not need often to clear up cigarette ash, and operating condition is better.But weak point is: 1, the user must build system civil engineering smokejack and refractory brick burner hearth voluntarily according to drawing at random, could use; 2, because the metal furnaces body case is smooth garden column structure, no fixing point, transporting and hoisting inconvenience; 3, be furnished with four ventholes on the annular furnace base plate of this hot-blast stove, the drop-bottom intensity difference, under hot conditions, be easy to generate warping deformation, cause and the civil engineering smokejack between produce gap, gas leakage, negative pressure descends, influence combustion efficiency, because the inner shortage of body of heater supports, body of heater is easy to generate depressed deformation again.

The utility model purpose provides a kind of square all-metal pipe free hot-blast stove that can overcome the shortcoming that exists in the above-mentioned pipe free hot-blast stove.It had both had the higher thermal efficiency, can be convenient to user installation and use again, and manufacturing process is simple simultaneously, and performance and price is better.

According to the utility model purpose, the disclosed a kind of vertical square all-metal pipe free hot-blast stove of designer (shown in accompanying drawing 2 and 3) master-plan comprises body of heater (1), medium air stream drives blower fan (2), flue tube connector (3), cooling bay (4), flue transition conduit (5), smoke exhaust fan assembly (6), chimney (7), deduster (8), hot blast monitor controller parts such as (9) constitute.

Above-mentioned body of heater (1) comprises outer skeleton (1-1), outer shrouding (1-2), flue (1-3), interior heat sink (1-4), heat sink (1-41) in interior, heat sink (1-42) in outer, inner flue (1-5), upper flue (1-51), lower flue (1-52), external flue (1-53), interior air channel (1-6), lower air duct (1-61), outer air channel (1-62), body of heater anchor ear (1-7), every blast cap (1-8), volume damper (1-9), burner hearth (1-10), fire grate (1-11), fire door (1-12), drop-bottom (1-13), air inlet (1-14), wire netting (1-15), furnace stay pin (1-16) is reinforced iron (1-17) and is strengthened iron parts such as (1-18).Whole body of heater (1) is vertical square all-metal construction, above-mentioned interior heat sink (1-4), interior in heat sink (1-41), outer in heat sink (1-42) overall structure that is square respectively, its base is welded on respectively on the drop-bottom (1-13).Above-mentioned flue (1-3) is by rectangular tube (1-31), square garden gradient tube (1-32), and garden cylindricality bend pipe (1-33) seam forms, and flue (1-3) inwall is welded with a plurality of fin (1-34).Be welded with the inner sealing plate (1-19) of level around rectangular tube (1-31) outer wall and interior heat sink (1-4) top, also be welded with the external seal plate (1-20) of level in interior around the top of heat sink (1-41) and outer middle heat sink (1-42), upper flue (1-51) is connected with outer upper flue hole (1-55) on the external seal plate (1-20) by the interior upper flue hole (1-54) on the inner sealing plate (1-19) respectively, inner flue (1-5) and external flue (1-53) are linked up, above-mentioned drop-bottom (1-13) side of being loop configuration, as shown in Figure 4.External flue (1-53) at drop-bottom (1-13) communicates by the lower flue (1-52) of venthole (1-56) with drop-bottom (1-13) back side.Encapsulate with outer shrouding (1-2) in the outer skeleton (1-1) of body of heater (1), constitute outer air channel (1-62) between outer shrouding (1-2) and the outer middle heat sink (1-42), above-mentioned outer in heat sink (1-42) and interior in heat sink (1-41) below located lower air duct hole (1-63) near drop-bottom (1-13), lower air duct (1-61) gets up interior air channel (1-6) and outer air channel (1-62) communication.

Be provided with square in body of heater upper flue (1-51) top every blast cap (1-8), every blast cap (1-8) all around the outer with outside in heat sink (1-42) be connected, tubaeform air inlet (1-14) is arranged between the shrouding (1-2) outside blast cap (1-8) outer and body of heater, air inlet (1-14) is covered with by wire netting (1-15), enters in the outer air channel (1-62) to prevent foreign material such as stone.

Fuel adds burner hearth (1-10) by fire door (1-12), after the igniting, starts smoke exhaust fan (6), because of suction function, cold air by around lower flue (1-52) outer bottom enter burner hearth (1-10) bottom, pass fire grate (1-11) and fuel, reach combustion-supporting purpose.The flue gas that fuel produces is along the direction of inner flue (1-5) negative-pressure air-flow, by around upper flue (1-51), external flue (1-53) between heat sink (1-41) and the outer middle heat sink (1-42) in entering, enter lower flue (1-52) by the venthole (1-56) on the drop-bottom (1-13), by flue tube connector (3), again by flue transition conduit (5), by smoke exhaust fan (6) just to be sent to chimney (7), under the effect of the gas solid separation of deduster (8), flue gas is delivered to atmosphere, and cigarette ash flows to ground by ash tube (8-1).

Meanwhile, under medium air stream drives blower fan (2) effect, cold air enters outer shrouding (1-2) by the air inlet (1-14) around the body of heater and after preheating is carried out in the outer air channel (1-62) between the heat sinks (1-42) at home and abroad, by around lower air duct (1-61) enter interior heat sink (1-4) and interior in after interior air channel (1-6) between the heat sink (1-41) further heats, enter burner hearth (1-3) again and heat at last, the high-temperature hot air of formation is delivered to by medium air-flow blower fan (2) use is provided in the drying box.

The utility model is isolated relative retrograde by flue gas and air shunting, carry out heat exchange, has realized the purpose of indirect drying medium.

The utility model has also designed hot blast monitoring and controlling organization.

On the mouth of pipe (1-35) that the hot-air of above-mentioned flue (1-3) is sent, be provided with temperature-measuring port (1-36), the temperature detector (9-1) of hot blast monitoring and controlling organization inserts in the temperature-measuring port (1-36), the coil of the output control A.C. contactor of temperature controller (temperature controller can be established the position that is placed on any ventilation and handled easily), make main circuit one termination go into main power source, the other end inserts on the motor of smoke exhaust fan (6), under the effect of temperature detector (9-1) input signal, when the air themperature of heating surpasses needed temperature, the output control ac contactor coil dead electricity of temperature controller, main circuit disconnects, smoke exhaust fan (6) quits work, lose suction function in the burner hearth (1-10), combustion air is obstructed, burns down.When wind-warm syndrome dropped to rated temperature, the input signal of temperature detector (9-1) touched temperature controller work again, made the main circuit of A.C. contactor be closure state, and smoke exhaust fan restarts, and burner hearth (1-10) begins the very hot oven heating again.Like this, the work that stops repeatedly, goes into operation by smoke exhaust fan (6) can make wind-warm syndrome have relative steady state, has guaranteed to be reached quality requirement by the oven dry material.

In addition, the utility model body of heater (1) above blast cap (1-8) around be provided with the adjusting control that volume damper (1-9) (as shown in Figure 3) is realized intake.When being needed high temperature drying, as long as the backguy (1-91) of pulling volume damper (1-9) is closed it by the oven dry material; Otherwise, under backguy (1-91) and bullet (1-92) effect, also can be half-open or full-gear with volume damper (1-9).

Produce distortion on integral body or the position for fear of body of heater (1) in heating process, designer's skeleton (1-1) outside stove is provided with angle steel anchor ear (1-7) all around, and shrouding (1-2) has reinforcing iron (1-17) to support with in interior and each layer heat sink outside.Be welded with angle steel at drop-bottom (1-13) back side and strengthen iron (1-18) framework, be welded with lower flue (1-52) weldment again simultaneously, more strengthened the intensity of drop-bottom (1-13).Put iron (1-21) below at fire grate (1-11) and be provided with the weight that a plurality of support iron (1-22) have strengthened bearing burner hearth.Be welded with thermal insulation board (1-37) on every side at hot-blast outlet pipe (1-35), when reinforcing hot-blast outlet pipe, can prevent to send hot blast temperature again and scatter and disappear.

The utility model also can be set up a cooling bay (4), above-mentioned flue tube connector (3) directly feeds in the cooling bay water, can alleviate the thermic load of smoke exhaust fan (6) on the one hand, can provide hot water to use to the fireman again, waste heat is fully used.

Vertical square all-metal pipe free hot-blast stove according to the design of the utility model principle compared with prior art has following advantage:

1, body of heater comprises that lower flue is whole all-metal construction, and each modular construction is reasonable, and is not yielding, long service life, and the while user need not to build voluntarily lower flue and can use, and overall cost is cheap, and is stable and reliable for performance;

2, the outer shrouding of body of heater is provided with the outer skeleton anchor ear of metal, and angle steel furnace stay pin is arranged around the drop-bottom lower end, transporting and hoisting and fixing all very convenient;

3, flue is designed to be formed by square column pipe, square garden gradient tube and the three part seam of garden post bend pipe according to heated part in burner hearth, the heat radiation area of flue is strengthened, be provided with a plurality of lower air ducts and upper flue simultaneously, guaranteed that this hot-blast stove heat exchange area is even, thermal efficiency ratio like product height;

4, the utility model design has automatic temperature monitoring, control device and intake size adjustment valve, realizes that hot blast temperature is adjustable, has guaranteed that the oven dry quality of material is reliable and stable;

Below by the drawings and Examples that provide hot-blast stove of the present utility model is further specified.

Fig. 1, be just vertical face structure cutaway view of the present utility model

Fig. 2, be overall installation front view of the present utility model

Fig. 3, be overall installation vertical view of the present utility model

Fig. 4, be that the utility model M is to topology view

Fig. 5, be the utility model B-B cutaway view

Body of heater (1), outer skeleton (1-1), outer shrouding (1-2), flue (1-3), rectangular tube (1-31), square garden gradient tube (1-32), garden cylindricality bend pipe (1-33) flue fin (1-34), hot blast is sent pipe (1-35), temperature-measuring port (1-36) thermal insulation board (1-37), interior heat sink (1-4), interior middle heat sink (1-41), heat sink (1-42) in outer, inner flue (1-5), upper flue (1-51), lower flue (1-52), external flue (1-53), inner flue hole (1-54), external flue hole (1-55), venthole (1-56), interior air channel (1-6), lower air duct (1-61), outer air channel (1-62), lower air duct hole (1-63), body of heater anchor ear (1-7), every blast cap (1-8), volume damper (1-9), backguy (1-91), bullet (1-92), burner hearth (1-10), fire grate (1-11), fire door (1-12), drop-bottom (1-13), air inlet (1-14), wire netting (1-15), furnace stay pin (1-16), reinforce iron (1-17), strengthen iron (1-18), inner sealing plate (1-19), external seal plate (1-20), medium air stream drives blower fan (2), flue tube connector (3), cooling bay (4), flue transition conduit (5), smoke exhaust fan assembly (6), chimney (7), deduster (8), ash tube (8-1), hot blast monitor controller (9), temperature detector (9-1).

According to design principle of the present utility model, can be made into 230,000 Kcal/hr, 130,000 Kcal/hr, the series of products of hot-blast stoves such as 60,000 Kcal/hr.

The outer skeleton (1-1) of body of heater adopts 40 * 40 * 4mm angle steel among the embodiment, the outer shrouding (1-2) of body of heater adopts the 1.2mm sheet metal, heat sink (1-41) and outer middle heat sink (1-42) employing 2.5mm general steel plate in interior, flue (1-3) adopts the 3mm general steel plate with interior heat sink (1-4), drop-bottom (1-13) adopts the 6mm general steel plate, outer skeleton anchor ear (1-7) adopts 30 * 30 * 3 angle steel, the reinforcing iron (1-17) of drop-bottom (1-13) adopts 40 * 40 * 4 angle steel, adopt the 1.2mm general steel plate every blast cap (1-8), upper flue (1-51) adopts the 3mm general steel plate, lower flue (1-52) adopts the 3mm general steel plate, there are 8 according to body of heater (1) peripheral direction upper flue (1-51) design, lower air duct (1-61) design has 8, volume damper (1-9) design every blast cap (1-8) top has 4, whole body of heater (1) appearance and size 1360 * 1360 * 2360mm, it is the 2.2kw driven by motor that smoke exhaust fan adopts power, and it is the 5.5kw driven by motor that medium air stream drives blower fan adopts power.Its heat exchange area of the hot-blast stove of Gou Chenging reaches 15.47M like this ², total coal consumption 40kg/hr, total quantity of heat production is 11～130,000 kcal per hour, and total blast volume is 6000～6810M per hour ³, hot blast temperature is adjustable in 60 ℃～130 ℃ scopes.

Claims

1, a kind of pipe free indirect thermal wind furnace that uses as the drying materials coordinative composition of equipments, comprise body of heater (1), medium air stream drives blower fan (2), flue transition conduit (5), smoke exhaust fan assembly (6), chimney (7), body of heater (1) comprises outer skeleton (1-1), outer shrouding (1-2), flue (1-3), flue fin (1-34), interior heat sink (1-34), heat sink (1-41) in interior, heat sink (1-42) in outer, inner flue (1-5), upper flue (1-51), external flue (1-53), interior air channel (1-6), lower air duct (1-61), outer air channel (1-62), every blast cap (1-8), burner hearth (1-10), fire grate (1-11), fire door (1-12), drop-bottom (1-13), air inlet (1-14), wire netting (1-15), the utility model is characterised in that it also comprises hot blast monitor controller (9), deduster (8) and flue tube connector (3), above-mentioned body of heater (1) also comprises lower flue (1-52), furnace stay pin (1-16), temperature-measuring port (1-36), whole body of heater (1) all-metal construction that is square, above-mentioned flue (1-3) is by rectangular tube (1-31), side's garden gradient tube (1-32), garden cylindricality bend pipe (1-33) seam forms, above-mentioned interior heat sink (1-4), heat sink (1-41) in interior, heat sink (1-42) overall structure that is square respectively in outer, its base is welded on respectively on the drop-bottom (1-13), form inner flue (1-5) between rectangular tube (1-31) outer wall of flue (1-3) and the interior heat sink (1-4), form external flue (1-53) between heat sink (1-41) and the outer middle heat sink (1-42) in interior, form outer air channel (1-62) in outer between heat sink (1-42) and outer shrouding (1-2), air channel (1-6) in forming between heat sink (1-41) and interior heat sink (1-4) in interior, upper flue (1-51) is gone up corresponding outer upper flue hole (1-55) by interior upper flue hole (1-54) on the inner sealing plate (1-19) and external seal plate (1-20) inner flue (1-5) and external flue (1-53) is linked up, external flue (1-53) communicates with lower flue (1-52) by the venthole (1-56) on the drop-bottom (1-13), lower flue (1-52) is by flue tube connector (3) and flue transition conduit (5) and smoke exhaust fan assembly (6), chimney (7), deduster (8) communicates, outer air channel (1-62) communicates with interior air channel (1-6) by the lower air duct (1-61) between two corresponding lower air duct holes (1-63) of heat sink (1-42) in outer and interior middle heat sink (1-41) lower end, and interior air channel (1-6) is by communicating with flue (1-3) every space between blast cap (1-8) and the upper flue (1-51).

2,, it is characterized in that being provided with volume damper (1-9) every blast cap (1-8) top according to right 1 described hot-blast stove.

3, according to claim 1, or 2 described hot-blast stoves, it is characterized in that this hot-blast stove also comprises a cooling bay (4), above-mentioned flue tube connector (3) directly feeds in the cooling bay (4).

4, according to claim 1, or 2, or 3 described hot-blast stoves, it is characterized in that outer skeleton (1-1) has angle steel anchor ear (1-7) and outer shrouding (1-2) and heat sink (1-4) all around, (1-41), reinforcing iron (1-17) is arranged between (1-42).Support mutually, there is reinforcement iron (1-18) framework at drop-bottom (1-13) back side, and hot blast is sent pipe (1-35) has thermal insulation board (1-37) to reinforce on every side, and fire grate (1-11) is put iron (1-21) below has a plurality of support iron (1-22) to support.

5, according to claim 1, or 2, or 3, or 4 described hot-blast stoves, it is characterized in that 8 upper flues (1-51), 8 lower air ducts (1-61) are arranged in the body of heater (1).