CN202361780U

CN202361780U - Furnace body of cupola furnace

Info

Publication number: CN202361780U
Application number: CN2011204493796U
Authority: CN
Inventors: 姚立猛; 陈姚
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-14
Filing date: 2011-11-14
Publication date: 2012-08-01
Anticipated expiration: 2021-11-14

Abstract

The utility model discloses a furnace body of a cupola furnace. The furnace body is a side feeding furnace body; and the furnace body sequentially comprises a furnace bottom part, a furnace hearth part, a furnace body part and a chimney part from bottom to top. The furnace body is structurally characterized in that the height of a feeding hole of the furnace body is 400 to 1,500 millimeters, and the width is 80 to 100 percent of the inside diameter of a hearth body of the furnace body; and a crash protection ring is provided with a feeding gap, the feeding gap is positioned on the front side of the upper part of the crash protection ring, and the shape of the feeding gap corresponds to the rear shape of a guide trough of a corresponding guide device in use.

Description

A kind of body of heater of furnace cupola

Technical field

The utility model relates to the manufacturing field of furnace cupola, is specifically related to a kind of body of heater of furnace cupola.

Background technology

Cast iron smelting is one of important step that obtains premium casting.The equipment of cast iron smelting has tilting cupola, three joint stoves, electric furnace (electric arc furnaces or electric induction furnace), furnace cupola etc.Wherein, it is the widest that furnace cupola is used, and the ironcasting total output is more than 90%, this be because the characteristics of cupola melting be that equipment is simple, easy to operate, production efficiency is high, can produce continuously, cost is low.Though the molten iron temperature of furnace cupola and Composition Control are easy not as electric furnace, it can satisfy the production requirement of general ironcasting basically, thereby present furnace cupola remains the capital equipment of cast iron smelting.Furnace cupola is a kind of cylindrical shape shaft furnace, removes to be mainly used in iron casting production, also can be in order to cooperate pneumatic steelmaking, being used for copper also sometimes, because of the furnace roof opening upwards, so be called furnace cupola.

The general structure of furnace cupola is: mainly comprise main stove, forehearth (also not establishing forehearth), supply air system and charging mechanism, often main stove is also referred to as furnace cupola in the prior art.Main stove mainly comprises support section and the body of heater that sets gradually from the bottom to top.Support section comprises basis, pillar (stove leg), drop-bottom and bottom door.Body of heater is the annulus cylindricality basically, is the major part of furnace cupola, is seated on the drop-bottom, and drop-bottom is again by corresponding pillar supporting.Body of heater is that the furnace lining of refractory material constitutes (furnace lining that also is provided with thinner thickness usually in the chimney part) by the cylindrical shape outer cover of steel plate with being fixed on material on the outer casing inner wall mainly, and the part from drop-bottom to charge door (also claiming dog-house) lower edge of furnace lining is a hearth body.Furnace charge is to the impact of hearth body when feeding in raw material in order to alleviate; Be provided with the crash protection circle (be welded to each other fixing and constitute) of steel on the top of hearth body inwall, and the crash protection circle is contacted with the top end face of the inwall of hearth body, is contacted with the top of the inwall of hearth body and hung to support and be attached on the hearth body by the circumferential lateral surface of its circle body by the lower surface of its flanged plate by the circle body of cylinder hull shape and the tabular flanged plate of horizontal circular ring that is positioned at the circle body top.Body of heater comprises furnace bottom part, cupola well part, shaft part and chimney part successively according to order from the bottom to top.Before the blow-on, closed bottom door, and with the tamping of sand compound as furnace bottom, body of heater be positioned at part around the furnace bottom then as the furnace bottom part of body of heater.Cupola well is meant the part from furnace bottom top to a minimum exhaust outlet of body of heater, and shaft is meant the part from a minimum exhaust outlet to charge door lower edge of body of heater, and chimney then is meant the above part in lower edge of the charge door of body of heater.Is connected through passing a bridge between main stove and the forehearth, passes a bridge and be provided with the molten iron passage, the gap bridge mouth of main stove is arranged on the cupola well position of body of heater, has 2 to 4 on the air port of main stove is divided and arranges, and every exhaust outlet all evenly distributes along the shaft circumference.Shaft part region also is the combustion zone of furnace cupola, according to the different physical and chemical process that in section up and down, is carried out, is divided into the torrid zone, fusion zone and preheating zone successively according to from bottom to up order in the combustion zone.Around fusion zone, because furnace temperature is high, some occasion, this part be without refractory material furnace lining, and establish annular conduit in the furnace shell outside, lowers the temperature to furnace shell outer wall spraying cooling water.

The course of work of furnace cupola is: earlier through charging mechanism by charging basket (also bucket) with a part of bed coke by the charge door interior lower floor of cupola well part in the burner hearth of packing into as bed coke.After igniting above the bed coke lower floor; Again remaining bed coke is added in burner hearth and drop on the top of bed coke lower floor; And be positioned at the bottom of the shaft part of burner hearth, until adding to specified altitude (generally more than 1 meter), the bed coke that is arranged in the shaft part is the upper strata of bed coke.Still carry out the reinforced of furnace charge by charging basket then through charging mechanism; Earlier add the flux lime stone at the bed coke end face; Then in the order adding burner hearth of every barrel of furnace charge according to metal charge, coke charge and flux; Till furnace charge being added to the charge door lower edge, the weight proportion of metal charge, coke charge and flux draws according to the melting rate of stove always.In whole blow-on process; Through constantly replenishing of furnace charge add keep the furnace charge end face from the below lower edge near charge door; Combustion reaction takes place with the upper strata of bed coke in the air in the air port blasts stove; The high-temperature furnace gas that generates upwards flows, and to the furnace charge heating, and makes the layer of metal furnace charge fusing on the bed coke end face.Iron after the fusing drops under the gravity effect drippage downwards, pass through the molten iron passage of levels and gap bridge of bed coke successively after, flow in the furnace chamber of forehearth.When iron drips through the bed coke upper strata, further heated by high-temperature furnace gas and red-hot coke, it is overheated that this process is called.Along with the fusing of metal charge, the bed of material descends gradually, so at set intervals, adds one barrel of furnace charge, keeps the height of furnace charge constant basically, and makes whole fusion process carry out continuously.The adding of coke charge in every barrel of furnace charge, its main purpose is the consumption that replenishes bed coke, and bed coke height is remained unchanged basically.Becoming high-temperature flue gas after high-temperature furnace gas that produces because of the burning of upper strata bed coke and the metal charge effect moves upward outside the furnace roof opening flows out body of heater along the bore passages of body of heater; A kind of is directly to feed atmosphere, and another kind is through feeding atmosphere after the dust pelletizing system again.For melting rate is the furnace cupola more than 3 tons and 3 tons; The height of its charge door (length on the above-below direction) is all more than or equal to 2.5 meters; The width of charge door (length on the left and right directions) and chimney internal diameter are close, thus at high-temperature flue gas when flowing through charge door, because the length on the above-below direction of charge door is bigger; Part high-temperature flue gas flows into the indoor of workshop from charge door; This does not just win foundry and is in the boundless and indistinct atmosphere of ash throughout the year, and high-temperature flue gas also carries a large amount of pernicious gases such as carbon monoxide secretly because of the imperfect combustion of coke, and annual all have the personnel of many foundries to carry out first aid because of anthracemia; Even the generation of dead situation, this has become casting industry and will solve and unsolved hard nut to crack for a long time.

The charging mechanism of furnace cupola mainly contains two kinds of chargers, and a kind of is monorail charger, and another kind is guide tracked charger.

Monorail charger mainly is made up of single track (I-steel), walking mechanism, hoist engine and hopper.The suspension hook vertical-lift charging basket that is rotatably connected on the steel cable of the pulley on the shaped as frame roof beam structure of walking mechanism by passing of hoist engine during work and is connected by this steel cable is to the cupola charging desired height, drives charging basket with respect to the single track parallel motion by the shaped as frame roof beam structure of walking mechanism again and carries out horizontal movement and got into the body of heater lumen centers and carried out vertically reinforced by the charge door of the body of heater sidepiece of furnace cupola.So-called vertical reinforced; The flange circle that also is the inverted round platform shelly that is connected as a single entity by the ladle body main body of cylinder shelly with from top and ladle body main body of the ladle body of the charging basket that adopted constitutes; After charging basket gets into the body of heater inner chamber; The flange circle that vertically drops to earlier its ladle body is shelved on 2 channel-section steels that laterally arrange as bracing frame in the stove; Thereby make that be positioned at the mechanical controller structure charging basket outside, that lower end and charging basket twoly open that base plate links to each other, the upper end links to each other with suspension hook that the hoist engine steel cable is connected becomes relaxed state by tensioning state; Charging basket is two to be opened base plate and then in bucket, opens under the gravity effect of solid material, and the material in the charging basket just vertically falls into the combustion zone of shaft, and feeding intake finishes again opens base plate through the upper end of the mechanical controller structure of steel cable and suspension hook pulling charging basket with charging basket two by hoist engine and close and drive charging basket immediately vertically upward; Disengage with the stove inner support frame and the segment distance that rises after, again by walking mechanism along single track with the parallel body of heater that shifts out of charging basket.The process that above-mentioned prior art is fed in raw material to furnace cupola has tangible deficiency: at first the charging basket of this kind charger is in the charge door entering furnace cupola by sidepiece; Because the height dimension of charging basket is all bigger usually with the bucket footpath; Add shaped as frame roof beam structure and the height of steel cable and suspension hook of the walking mechanism of monorail charger; Not only cause the height of charge door of sidepiece of furnace cupola big, width is also big (for example melting rate for 10 to 12 tons the material mouth of furnace cupola per hour greatly about 4 to 5 meters high; 1.6 to 1.8 meters wide; Melting rate is that the height of charge door of 3 tons furnace cupola is a 2.5-2.6 rice; Width and body of heater internal diameter are basic identical), cause furnace cupola the time to have more extraneous air to be inhaled into the shaft inner chamber, because of the entering because of the outside air on charge door top of the suction that blower fan produced of thermal current and dust arrester is consumed from the upper space of charge door in operation.Therefore, what make the high-temperature flue gas that produced in the stove has quite a few to flow into the indoor of workshop from charge door, even if strengthen the power of the blower fan of dust arrester, also produces little effect.In order to ensure operating personnel's life security, the factory building of many foundries is highly higher mostly, and on roof and wall intensive installation ventilating fan, thereby wasted the energy greatly, nonetheless, the anthracemia accident also often takes place.In addition; Charging basket stopping during owing to feed intake to the shaft bore passages; Furnace cupola comprises toxic gas and dust such as a large amount of carbon monoxide, sulfur dioxide because of moving the high-temperature flue gas that is produced continuously; They pour out to the working environment in workshop from charge door, further cause the severe contamination to working environment, and are bigger to site operation personnel's injury.The hopper that Chinese patent document CN2120797U (number of patent application 92211335.1) disclosed " a kind of well formula loading hopper " promptly belongs to monorail charger to be adopted.

Guide tracked charger comprises inclined skip charger and two kinds of versions of tipping bucket type charger.Guide tracked charger mainly is made up of guide rail, truck, hopper and hoist engine.Guide tracked charger is in when work, drag truck by hoist engine and hopper pulled to the charge door of furnace cupola along guide rail, the tipping bucket type charger with hopper in the charge door upset and material is dropped in the furnace cupola.Inclined skip charger then drags truck by hoist engine and along guide rail hopper is pulled in the inner chamber of furnace cupola, opens base plate and to furnace charge.The latter since when reinforced hopper be arranged in the shaft inner chamber; So its shortcoming is basic identical with two shortcomings of monorail charger; And also exist because of pull rope is arranged in the erosion that the shaft inner chamber receives high-temperature flue gas always and damage; Thereby need often to change, there is great potential safety hazard in the careless slightly problem that promptly can rupture.For the former, when hopper upset was reinforced, evenly reinforced for making, hopper must have quite a few to stretch in the body of heater inner chamber, so also can form high-temperature flue gas stop, and have two shortcomings of monorail charger equally; Also, when reinforced, then directly receive the erosion of high-temperature flue gas and damage, thereby need often replacing, carelessly slightly also can rupture because nearer from charge door.Chinese patent document CN201385952Y (number of patent application 200920020118.5) disclosed " high inclination-angle charger " is a kind of of above-mentioned guide tracked charger.

In addition, also has a kind of charger that feeds in raw material from the chimney top of furnace cupola.This charger must cooperate the transformation to the body of heater chimney; Need on the top of body of heater chimney the air inducing equipment by the sidepiece smoke to be set, though when operation, can avoid the problem that flue gas gets into the workshop occurring, the furnace cupola of this structure is not only invested bigger; Energy consumption is higher during operation; And since the position of dog-house higher (can reduce the height of chimney, but higher) than the dog-house position of common furnace cupola cause easily when feeding intake the damage of burner hearth and the fragmentation of coke.

The utility model content

The purpose of the utility model is: flue gas was difficult for the body of heater of excessive, safe and reliable and energy-conservation furnace cupola when a kind of the use was provided.

The basic technical scheme of realizing the purpose of the utility model is: a kind of body of heater of furnace cupola, be side charging formula body of heater, and this body of heater comprises furnace bottom part, cupola well part, shaft part and chimney part successively according to order from the bottom to top.Body of heater is the annulus cylindricality basically, is the part on the drop-bottom that is seated in the furnace cupola support section of furnace cupola, and the charge door of body of heater is positioned at the bottom of chimney part.Body of heater comprises that mainly columnar shell of being processed by steel plate and the material that is fixed on the outer casing inner wall are the furnace lining of refractory material.The part to the charge door lower edge from drop-bottom of furnace lining is a hearth body.Body of heater also comprises the crash protection circle.The crash protection circle is welded to each other fixing by the circle body of cylinder hull shape and the tabular flanged plate of horizontal circular ring that is positioned at the circle body top and constitutes.The crash protection circle and is contacted with the top of the inwall of hearth body by the circumferential lateral surface of its circle body on the top end face of the inwall that is pressed in hearth body under the gravity effect by the lower surface of its flanged plate, thereby makes the crash protection circle be fixed on the hearth body.

The height of the charge door of above-mentioned body of heater is 400 millimeters to 1500 millimeters, width be body of heater hearth body internal diameter 80% to 100%.The crash protection circle is provided with the breach that feeds intake, and this breach that feeds intake is positioned at the front side, top of crash protection circle, and the rear shape of the deflector chute of the material guide device of the shape of this breach that feeds intake when using is corresponding.

The further technical scheme that is the basis with the basic technical scheme of the body of heater of above-mentioned furnace cupola is: obtain after the breach that feeds intake of crash protection circle is cut away by the front side, top to the collision guard circle; Comprising high back before imaginary by 1 low with inclination angle horizontal plane be the intersecting foremost of top of tapered plane and the circle body of crash protection circle of α, the described imaginary tapered plane in edge crashes to the back lower place and hits the cutting that circle body and flanged plate carried out of guard circle again.The scope of described inclined angle alpha be 28 the degree to 45 the degree, preferred 33 the degree to 40 the degree.

The technical scheme that is the basis with the further technical scheme of the body of heater of above-mentioned furnace cupola is: the cutting that the front side, top of collision guard circle is carried out also comprises a kind of in following three kinds of cuttings; Also promptly intersect with the first half at the top of crash protection circle from top to bottom by 1 or 2 or 3 imaginary vertical guides, again along described imaginary vertical guide downwards to the circle body of collision guard circle and flanged plate carry out up to described imaginary tapered plane crossing and by cutting.

Above-mentioned first kind is cut into by intersecting with the corresponding site of the first half at the top of crash protection circle from top to bottom to the vertical guide that is provided with about 1 imaginary edge; Again along described imaginary vertical guide downwards to circle body and the flanged plate of collision guard circle carry out up to intersecting with described imaginary tapered plane by cutting, and about this to vertical guide and the joining of the left and right sides of the top of crash protection circle and circle body between distance be said circle body internal diameter 80% to 100%.

Above-mentioned second kind is cut into by the vertical guide of the central axis of 2 imaginary circle bodies through crash protection circles and intersects with the corresponding site of the first half at the top of crash protection circle from top to bottom; Again along described 2 imaginary vertical guides of crossing central axis downwards to the circle body of collision guard circle and flanged plate carry out up to described imaginary tapered plane crossing and by cutting; 2 imaginary cross central axis vertical guides should about to vertical guide and the joining of the top of crash protection circle and the left and right sides of circle body between distance be said circle body internal diameter 80% to 100%, and 2 imaginary vertical guides of crossing central axis are with respect to being symmetrical set to the vertical guide of setting along front and back through central axis.

It is crossing with the corresponding site of the first half at the top of crash protection circle from top to bottom that above-mentioned the third is cut into the combinatorial surface is made up of these 3 vertical guides of left surface, trailing flank and right flank in the side around the imaginary cuboid; Again along described combinatorial surface downwards to circle body and the flanged plate of collision guard circle carry out up to intersecting with described imaginary tapered plane by cutting, and said combinatorial surface is with respect to being symmetrical set to the vertical guide of setting along front and back through central axis.About the trailing flank in the described combinatorial surface to length be said circle body internal diameter 80% to 100% add the deflector chute of corresponding material guide device the thickness of side plate.

The technical scheme that is the basis with each corresponding techniques scheme of the body of heater of above-mentioned furnace cupola is: the body of heater of furnace cupola also is provided with a material mouthful door curtain.A material mouthful door curtain comprises 2 to 15 baffle plates, fixed head, axle and separation sleeves.The planform of each baffle plate is all identical, includes be rotationally connected cover and baffle portion.The cover that is rotationally connected is steel pipe, and its internal diameter is corresponding with axle, and the cover that is rotationally connected is horizontally disposed with along left and right directions by its axis.Baffle portion is a rectangular steel plates, and rectangular steel plates is weldingly fixed on to be rotationally connected by its minor face from the lower direction and puts, and the minor face of rectangular steel plates is along the left and right directions setting, and the width of the minor face of rectangular steel plates is 50 millimeters to 200 millimeters.The bottom of baffle plate is to leaving 200 millimeters between the dog-house to 500 mm clearance.Fixed head has 2, is divided into left fixed head and right fixed head by its position, residing left and right sides.The planform of 2 fixed heads is all identical, is the steel integral piece, and the bottom of fixed head is provided with connecting hole.Left side fixed head is weldingly fixed on by its upper right on the preceding upper lateral part of dog-house of body of heater.Right fixed head is weldingly fixed on by its upper left-hand on the preceding upper lateral part of dog-house of body of heater, and corresponding with left fixed head.Axle is weldingly fixed on respectively by its two ends in the connecting hole of connecting hole and right fixed head of left fixed head.Each baffle plate is rotationally connected by it and is enclosed within on the axle, and is rotationally connected with axle.Separation sleeve is a steel pipe, and its internal diameter is corresponding with the external diameter of axle.The length of separation sleeve is 10 millimeters to 30 millimeters.The number of separation sleeve is that the number of baffle plate adds 1.Each separation sleeve is enclosed within on the axle, and is arranged between fixed head and the baffle plate and between the adjacent screen.

The utlity model has positive effect:

(1) in the furnace cupola field, the body of heater of the furnace cupola of the utility model belongs to original utility model to be created, and is the upgraded product of this area, also can undergo technological transformation to the body of heater of existing furnace cupola and meets requirement of safe production.

(2) innovative point of the body of heater of the furnace cupola of the utility model is: the height that will be positioned at the charge door of sidepiece is arranged to be significantly smaller than the height of the body of heater side charging mouth of existing furnace cupola; Its numerical value is selected in 0.4 to 1.5 meter scope according to the size of melting rate (per hour 3 tons to 30 tons); Preferred 0.6 to 1 meter of this scope; The width of described charge door is corresponding with the body of heater internal diameter, even is slightly less than the body of heater internal diameter, and the width that also is charge door is 80% to 100% of a body of heater internal diameter; Thereby the negative pressure (being commonly called as the gas effect of pulling out) that the thermal current rising is produced can connect the whole chimney part of body of heater; Stack effect is not fully exerted, and this has solved people and will solve and an open question for a long time fundamentally having solved high-temperature furnace gas at the technical barrier that charge door leaks; Make that not only workshop condition takes on an entirely new look; And fundamentally eliminated the danger of operating personnel's anthracemias, also fundamentally solved the problem of the normal silicosis occupational diseases of suffering from of operating personnel, the energy of required consumption when greatly reducing follow-up smoke processing system air inducing simultaneously.

(3) body of heater of the furnace cupola of the utility model also preferably is provided with one group of steel plate as material mouthful door curtain at charge door; Not only help the further formation of negative pressure in the furnace cupola; Guaranteed that the furnace high-temperature flue gas can not leak under the fortuitous event yet, and can reduce the energy of dust arrester required consumption of when smoke evacuation greatly.In addition, above-mentioned material mouth door curtain can play barrier effect preferably to furnace charge effectively when deflector chute glides, further reduced the impact to the crash protection circle of body of heater.

(4) body of heater of the furnace cupola of the utility model also preferably with charge door than the charge door of existing furnace cupola about about 1 meter distance that descends; The upper surface of the basic and corresponding operating platform in the bottom of charge door is on same level height; This is for the furnace cupola of setting operation platform; Do not needed operating personnel to carry out the required operation of carrying out usually, greatly reduced labor intensity of operating personnel at charge door.In addition, the quantity of the ventilation fan in the workshop also can reduce significantly, with making the consumption of the energy reduce greatly.

Description of drawings

Fig. 1 is the structural representation of the furnace cupola of the utility model;

Fig. 2 is the sketch map of the part of charge door during from the right-hand observation furnace cupola of Fig. 1;

Fig. 3 is the sketch map of crash protection circle of the body of heater of furnace cupola;

Fig. 4 is the sketch map of A when observing from Fig. 3;

Fig. 5 is arranged on the sketch map in the hearth body for the crash protection circle.

Mark in the above-mentioned accompanying drawing is following:

Body of heater 2, furnace bottom part 2a, cupola well part 2b, shaft part 2c, chimney part 2d,

Support section 20,

Shell 21, furnace lining 22, hearth body 22-1,

Crash protection circle 23, circle body 23-1, flanged plate 23-2, the breach 23-3 that feeds intake,

Charge door 24, material mouthful door curtain 25, baffle plate 25-1, the cover 25-1-1 that is rotationally connected, baffle portion 25-1-2, fixed head 25-2, left fixed head 25-2a, right fixed head 25-2b, axle 25-3, separation sleeve 25-4,

Operating platform 100.

The specific embodiment

For the convenience of describing; The utility model will be called the front side towards a side of charge door; And the side that common forehearth is placed is called rear side, so the specific descriptions orientation of present embodiment describes according to concrete orientation shown in Figure 2, and the fore-and-aft direction of Fig. 2 is the fore-and-aft direction of description (being also referred to as vertically); Be the front side towards the side of Fig. 2 promptly also, a side who deviates from Fig. 2 is rear side; The left and right directions of Fig. 2 is the left and right directions (being also referred to as laterally) of description; The above-below direction of the above-below direction of Fig. 2 for describing.

(embodiment 1, the body of heater of furnace cupola)

See Fig. 1 and Fig. 2, the body of heater of the furnace cupola of the utility model is a side charging formula body of heater 2, comprises furnace bottom part 2a, cupola well part 2b, shaft part 2c and chimney part 2d successively according to from the bottom to top order.The support section 20 of furnace cupola comprises basis, pillar, drop-bottom and bottom door.Body of heater 2 is the annulus cylindricality basically; It is the part on the drop-bottom that is seated in furnace cupola support section 20 of furnace cupola; Body of heater 2 comprises that mainly columnar shell of being processed by steel plate 21 and the material that is fixed on shell 21 inwalls are the furnace lining 22 of refractory material; Wherein, the part to the charge door lower edge from drop-bottom of furnace lining 22 is hearth body 22-1.

See Fig. 3 and Fig. 4, body of heater 2 also comprises crash protection circle 23.Crash protection circle 23 is welded to each other fixing by the circle body 23-1 of cylinder hull shape and the tabular flanged plate 23-2 of horizontal circular ring that is positioned at the circle body top and constitutes.Crash protection circle 23 is on the top end face of the inwall that is pressed in hearth body 22-1 under the gravity effect by the lower surface of its flanged plate 23-2; And the circumferential lateral surface by its circle body 23-1 contacts with the top of the inwall of hearth body 22-1, thereby makes crash protection circle 23 be fixed on the hearth body 22-1.Crash protection circle 23 is provided with the breach 23-3 that feeds intake, and this breach 23-3 that feeds intake is positioned at the front side, top of crash protection circle 23, and the rear shape of the shape of this breach 23-3 that feeds intake deflector chute of corresponding material guide device when using is corresponding.After being cut away by the front side, top to collision guard circle 23, the breach 23-3 that feeds intake of crash protection circle 23 obtains; Comprising high back before imaginary by 1 low with inclination angle horizontal plane be the intersecting foremost of top of tapered plane and the circle body 23-1 of crash protection circle 23 of α, the described imaginary tapered plane in edge is to the back lower place cutting that the circle body 23-1 that hits guard circle 23 and flanged plate 23-2 carried out that crashes again; The scope of described inclined angle alpha be 28 degree to 45 degree, preferred 33 degree are to 40 degree (present embodiment be 35 degree).

The cutting carried out of front side, top of collision guard circle 23 is also comprised a kind of in following three kinds of cuttings; Also promptly intersect with the first half at the top of crash protection circle 23 from top to bottom by 1 or 2 or 3 imaginary vertical guides, again along described imaginary vertical guide downwards to the circle body 23-1 of collision guard circle 23 and flanged plate 23-2 carry out up to described imaginary tapered plane crossing and by cutting.

Above-mentioned first kind is cut into by intersecting with the corresponding site of the first half at the top of crash protection circle 23 from top to bottom to the vertical guide that is provided with about 1 imaginary edge; Again along described imaginary vertical guide downwards to circle body 23-1 and the flanged plate 23-2 of collision guard circle 23 carry out up to intersecting with described imaginary tapered plane by cutting, and about this to vertical guide and the joining of the left and right sides of the top of crash protection circle 23 and circle body 23-1 between distance be said circle body 23-1 internal diameter 80% to 100%.Present embodiment adopts this first kind of cutting mode.

Above-mentioned second kind is cut into by the vertical guide of the central axis of 2 imaginary circle body 23-1 through crash protection circles 23 and intersects with the corresponding site of the first half at the top of crash protection circle 23 from top to bottom; Again along described 2 imaginary vertical guides of crossing central axis downwards to the circle body 23-1 of collision guard circle 23 and flanged plate 23-2 carry out up to described imaginary tapered plane crossing and by cutting; 2 imaginary cross central axis vertical guides should about to vertical guide and the joining of the top of crash protection circle 23 and the left and right sides of circle body 23-1 between distance be said circle body 23-1 internal diameter 80% to 100%, and 2 imaginary vertical guides of crossing central axis are with respect to being symmetrical set to the vertical guide of setting along front and back through central axis.

It is crossing with the corresponding site of the first half at the top of crash protection circle 23 from top to bottom that above-mentioned the third is cut into the combinatorial surface is made up of these 3 vertical guides of left surface, trailing flank and right flank in the side around the imaginary cuboid; Again along described combinatorial surface downwards to circle body 23-1 and the flanged plate 23-2 of collision guard circle 23 carry out up to described imaginary tapered plane crossing and by cutting; About the trailing flank in the described combinatorial surface to length be said circle body 23-1 internal diameter 80% to 100% add the deflector chute of corresponding material guide device the thickness of side plate, and left surface and right flank are with respect to being symmetrical set to the vertical guide that is provided with along front and back through central axis.

Before the blow-on, closed bottom door, and with the tamping of sand compound as furnace bottom.The charge door 24 of body of heater 2 is positioned at the bottom of chimney part 2d, and the upper surface of the basic and corresponding operating platform 100 in the bottom of charge door 24 is on same level height.The height of charge door 24 is 400 millimeters to 1500 millimeters (present embodiment is 800 millimeters); The width of described charge door is corresponding with the body of heater internal diameter of furnace cupola; Even be slightly less than body of heater 2 internal diameters of furnace cupola, also be that charge door 24 width are 80% to 100% (present embodiment is 80%) of internal diameter of the hearth body 22-1 of body of heater 2.

See Fig. 2, the body of heater 2 of said furnace cupola also is provided with material mouthful door curtain 25.A material mouthful door curtain 25 comprises 2 to 15 baffle plate 25-1 (present embodiment is 7, only draws among Fig. 24 and illustrates), fixed head 25-2, axle 25-3 and separation sleeve 25-4.The planform of each baffle plate 25-1 is all identical, includes be rotationally connected cover 25-1-1 and baffle portion 25-1-2.The cover 25-1-1 that is rotationally connected is a steel pipe, and its internal diameter is corresponding with axle 25-3, and the cover 25-1-1 that is rotationally connected is horizontally disposed with along left and right directions by its axis; Baffle portion 25-1-2 is a rectangular steel plates; Rectangular steel plates is weldingly fixed on the cover 25-1-1 that is rotationally connected by its minor face from lower direction; And the minor face of rectangular steel plates is along the left and right directions setting, and the width of the minor face of rectangular steel plates is that the bottom of 50 millimeters to 200 millimeters (present embodiment is 100 millimeters) baffle plate 25-1 is to leaving 200 millimeters between the charge door 24 to 500 mm clearance (present embodiment is 300 millimeters).Fixed head 25-2 has 2, is divided into left fixed head 25-2a and right fixed head 25-2b by its position, residing left and right sides.The planform of 2 fixed head 25-2 is all identical, is the steel integral piece, and the bottom of fixed head 25-2 is provided with connecting hole.Left side fixed head 25-2a is weldingly fixed on by its upper right on the preceding upper lateral part of charge door 24 of body of heater 2 of furnace cupola; Right fixed head 25-2b is weldingly fixed on by its upper left-hand on the preceding upper lateral part of charge door 24 of body of heater 2, and corresponding with left fixed head 25-2a.Axle 25-3 is weldingly fixed on respectively by its two ends in the connecting hole of connecting hole and right fixed head 25-2b of left fixed head 25-2 a.Each baffle plate 25-1 is enclosed within on the 25-3 by its cover 25-1-1 that is rotationally connected, and is rotationally connected with axle 25-3.Separation sleeve 25-4 is a steel pipe, and its internal diameter is corresponding with the external diameter of axle 25-3.The length of separation sleeve 25-4 is 10 millimeters to 30 millimeters (present embodiment is 10 millimeters).The number of separation sleeve 25-4 is that the number of baffle plate 25-1 adds 1.Each separation sleeve 25-4 is enclosed within on the 25-3, and is arranged between fixed head 25-2 and the baffle plate 25-1 and between the adjacent screen 25-1.

Furnace cupola produces a large amount of flue gases when carrying out cast iron smelting, contain toxic gas and dust such as a large amount of carbon monoxide, sulfur dioxide in the flue gas, therefore produces flue gas and need handle accordingly usually, just can be disposed in the atmosphere.Usually adopt deduster to carry out dust removal process at present for the travel fatigue in the flue gas.And electric bag compound type dust remover and sack cleaner are use in the present industry many.When stating electric bag compound type dust remover and sack cleaner in the use the dust of furnace cupola being handled; Need flue gas be caused in the deduster through air-introduced machine; Therefore with said method the flue gas of quoting furnace cupola of the present invention is carried out dust removal process; Can reduce the power of air-introduced machine greatly, make energy consumption reduce by 30% to 50%.

More than all embodiment only supply to explain the usefulness of the utility model; But not to the restriction of the utility model; The technical staff in relevant technologies field is under the situation of spirit that does not break away from the utility model and scope; Can also make various conversion and variation, can also carry out corresponding transformation according to the inspiration of the foregoing description and application examples in the concrete application process, so all technical schemes that are equal to should be included within the scope of patent protection of the utility model all.

Claims

1. the body of heater of a furnace cupola is side charging formula body of heater (2), and this body of heater (2) comprises furnace bottom part (2a), cupola well part (2b), shaft part (2c) and chimney part (2d) successively according to order from the bottom to top; Body of heater (2) is the annulus cylindricality basically, is the part on the drop-bottom that is seated in furnace cupola support section (20) of furnace cupola, and the charge door (24) of body of heater (2) is positioned at the bottom of chimney part (2d); Body of heater (2) mainly comprises the columnar shell of being processed by steel plate (21) and the material that is fixed on shell (21) inwall is the furnace lining (22) of refractory material; The part from drop-bottom to charge door (24) lower edge of furnace lining (22) is hearth body (22-1); Body of heater (2) also comprises crash protection circle (23); Crash protection circle (23) is welded to each other fixing by the circle body (23-1) of cylinder hull shape and the tabular flanged plate (23-2) of horizontal circular ring that is positioned at the circle body top and constitutes; Crash protection circle (23) is on the top end face of the inwall that is pressed in hearth body (22-1) under the gravity effect by the lower surface of its flanged plate (23-2); And the circumferential lateral surface by its circle body (23-1) contacts with the top of the inwall of hearth body (22-1), thereby makes crash protection circle (23) be fixed on the hearth body (22-1); It is characterized in that:

The height of the charge door (24) of body of heater (2) is 400 millimeters to 1500 millimeters, width be body of heater (2) hearth body (22-1) internal diameter 80% to 100%; Crash protection circle (23) is provided with the breach that feeds intake (23-3), and this breach that feeds intake (23-3) is positioned at the front side, top of crash protection circle (23), and the rear shape of the shape of this breach that feeds intake (23-3) deflector chute of corresponding material guide device when using is corresponding.

2. the body of heater of furnace cupola according to claim 1; It is characterized in that: the breach that feeds intake (23-3) of crash protection circle (23) obtains after being cut away by the front side, top to collision guard circle (23); Comprising high back before imaginary by 1 low with inclination angle horizontal plane be the intersecting foremost of top of tapered plane and the circle body (23-1) of crash protection circle (23) of α, the described imaginary tapered plane in edge is to the back lower place cutting that the circle body (23-1) that hits guard circle (23) and flanged plate (23-2) carried out that crashes again; The scope of described inclined angle alpha be 28 the degree to 45 the degree, preferred 33 the degree to 40 the degree.

3. the body of heater of furnace cupola according to claim 2; It is characterized in that: the cutting carried out of front side, top of collision guard circle (23) is also comprised a kind of in following three kinds of cuttings; Also promptly intersect with the first half at the top of crash protection circle (23) from top to bottom by 1 or 2 or 3 imaginary vertical guides, again along described imaginary vertical guide downwards to the circle body (23-1) of collision guard circle (23) and flanged plate (23-2) carry out up to described imaginary tapered plane crossing and by cutting;

Above-mentioned first kind is cut into by intersecting with the corresponding site of the first half at the top of crash protection circle (23) from top to bottom to the vertical guide that is provided with about 1 imaginary edge; Again along described imaginary vertical guide downwards to circle body (23-1) and the flanged plate (23-2) of collision guard circle (23) carry out up to intersecting with described imaginary tapered plane by cutting, and about this to vertical guide and the joining of the left and right sides of the top of crash protection circle (23) and circle body (23-1) between distance be said circle body (23-1) internal diameter 80% to 100%;

Above-mentioned second kind is cut into by the vertical guide of the central axis of 2 imaginary circle bodies (23-1) through crash protection circles (23) and intersects with the corresponding site of the first half at the top of crash protection circle (23) from top to bottom; Again along described 2 imaginary vertical guides of crossing central axis downwards to the circle body (23-1) of collision guard circle (23) and flanged plate (23-2) carry out up to described imaginary tapered plane crossing and by cutting; 2 imaginary cross central axis vertical guides should about to vertical guide and the joining of the top of crash protection circle (23) and the left and right sides of circle body (23-1) between distance be said circle body (23-1) internal diameter 80% to 100%, and 2 imaginary vertical guides of crossing central axis are with respect to being symmetrical set to the vertical guide of setting along front and back through central axis;

It is crossing with the corresponding site of the first half at the top of crash protection circle (23) from top to bottom that above-mentioned the third is cut into the combinatorial surface is made up of these 3 vertical guides of left surface, trailing flank and right flank in the side around the imaginary cuboid; Again along described combinatorial surface downwards to circle body (23-1) and the flanged plate (23-2) of collision guard circle (23) carry out up to intersecting with described imaginary tapered plane by cutting, and said combinatorial surface is with respect to being symmetrical set to the vertical guide of setting along front and back through central axis; About the trailing flank in the described combinatorial surface to length be said circle body (23-1) internal diameter 80% to 100% add the deflector chute of corresponding material guide device the thickness of side plate.

4. according to the body of heater of the described furnace cupola of one of claim 1 to 3, it is characterized in that: the body of heater of furnace cupola (2) also is provided with material mouthful door curtain (25); A material mouthful door curtain (25) comprises 2 to 15 baffle plates (25-1), fixed head (25-2), axle (25-3) and separation sleeve (25-4); The planform of each baffle plate (25-1) is all identical, includes be rotationally connected cover (25-1-1) and baffle portion (25-1-2); The cover (25-1-1) that is rotationally connected is a steel pipe, and its internal diameter is corresponding with axle (25-3), and the cover (25-1-1) that is rotationally connected is horizontally disposed with along left and right directions by its axis; Baffle portion (25-1-2) is a rectangular steel plates, and rectangular steel plates is weldingly fixed on the cover (25-1-1) that is rotationally connected by its minor face from lower direction, and the minor face of rectangular steel plates is along the left and right directions setting, and the width of the minor face of rectangular steel plates is 50 millimeters to 200 millimeters; The bottom of baffle plate (25-1) is left 200 millimeters to 500 mm clearance between the dog-house (24); Fixed head (25-2) has 2, is divided into left fixed head (25-2a) and right fixed head (25-2b) by its position, residing left and right sides; The planform of 2 fixed heads (25-2) is all identical, is the steel integral piece, and the bottom of fixed head (25-2) is provided with connecting hole; Left side fixed head (25-2a) is weldingly fixed on by its upper right on the preceding upper lateral part of dog-house (24) of body of heater (2); Right fixed head (25-2b) is weldingly fixed on by its upper left-hand on the preceding upper lateral part of dog-house (24) of body of heater (2), and corresponding with left fixed head (25-2a); Axle (25-3) is weldingly fixed on left fixed head respectively (in the connecting hole of 25-2 connecting hole and right fixed head (25-2b) a) by its two ends; Each baffle plate (25-1) is enclosed within on the axle (25-3) by its cover (25-1-1) that is rotationally connected, and is rotationally connected with axle (25-3); Separation sleeve (25-4) is a steel pipe, and its internal diameter is corresponding with the external diameter of axle (25-3); The length of separation sleeve (25-4) is 10 millimeters to 30 millimeters; The number of separation sleeve (25-4) is that the number of baffle plate (25-1) adds 1; Each separation sleeve (25-4) is enclosed within on the axle (25-3), and is arranged between fixed head (25-2) and the baffle plate (25-1) and between the adjacent screen (25-1).