CN2146688Y - Thermoelectric air supply cupola without chimney - Google Patents

Abstract

The utility model discloses a non-chimney cupola furnace with a temperature differential type air supply, which belongs to the cupola technical field. The utility model is characterized in that the high and dull chimney of the cupola is removed, and a big hot wind liner is provided with a drop guide barrel and a charging automatic opening door. The drop guide barrel has inside and outside two layers, the interior layer barrel body is provided at least a row of venting holes, the exterior surface is provided with screwing guide blades, and interstices exist between a bottom opening and the big hot wind liner. The drop guide barrel is communicated with the top left of a coller provided with a plurality of metallic cooling tubes in the middle. The lower right of the cooler is communicated with a dust remover, and the two ends of the middle metallic cooling tubes are respectively connected with the big hot wind liner and a blower. The utility model has low cost, the dust removing effect of furnace gases can be lasting and reliable discharge coming up to the standard.

Description

Thermoelectric air supply cupola without chimney

The utility model belongs to the Metal Melting technical field, says it is a kind of furnace cupola of melting iron in more detail.

Furnace cupola has body of heater, charge door and chimney, 86207381.2 number utility model patent has provided a kind of thermal type air supply cupola furnace, this furnace cupola is under the top, charge door at body of heater large and small two hot blast courages to be housed, and the bottom of large and small hot blast courage has conduit to be communicated with; The end row of furnace bottom is the high temperature air port, there is number row cold air diffuser top, high temperature air port, the bellows in high and low temperature air port are connected with little, big hot blast courage by airduct respectively, and the duct sleeve that connects small blast-heating chamber is contained within the airduct that connects big hot blast courage with on the airduct that is connected big hot blast courage valve is housed.This thermal type air supply cupola furnace, furnace gas is directly discharged from chimney, contaminated environment.Though device deduster technology on the furnace cupola chimney is arranged at present, because deduster position height, inconvenient installation, maintenance and the management of removing dirt slag; Add not further recycling of burner gas residual heat, the furnace gas export temperature is higher, and deduster is exposed outside, perishable damage; During deduster work, charge door is not closed, and furnace gas is excessive; Therefore, this dedusting technology investment is big, can't guarantee that dust removing effects reaches environmental requirement lastingly reliably.

The purpose of this utility model provides a kind of wind supplying cupola, and it can further reclaim the waste heat in the furnace gas and can guarantee the furnace gas qualified discharge lastingly reliably.

For achieving the above object, technical solution of the present utility model is to remove the chimney of the high benzene of furnace cupola, and present vertical charge door is changed into leading bucket 9, and it is inside and outside two-layer that leading bucket 9 is, and interlayer is a toroidal cavity; The top mouth of leading bucket 9 is equipped with reinforced automatic opening door 12, is closed condition when not reinforced; Have row's passage 11 on the internal layer cylinder at least, its outer surface is provided with spirally-guided blade 10, is provided with the gap between the top mouth of Di Kou and big hot blast courage 7; The end mouth device of exterior bowl is on big hot blast courage 7;

Cooler 14 is arranged, establish several metal cooling-pipe 15 in it, metal cooling-pipe 15 1 ends are connected with air blast by pipeline 16, and the other end is connected with big hot blast courage by pipeline 17; There is the furnace gas import on the upper left side of cooler 14, and it joins by pipeline 13 and leading bucket 9, and there is furnace gas export the lower right, and furnace gas export is connected with deduster 31 by pipeline 20.

" the inner multiple rib type furnace cupola small blast-heating chamber " that provides in No. 91221353.1 utility application of small blast-heating chamber 8 employings of the present utility model.Deduster 31 preferably adopts water-film Separator or Wen Shi dust nozzle.

Reinforced automatic opening door 12, its reinforced principle of opening automatically can adopt gravity to open (mainly being the weight of utilizing loading hopper); Also can adopt the principle of electrical equipment control or photo-electric control.

Operation principle of the present utility model is: furnace roof is opened door 12 by auto feed and is sealed, under the draft of deduster air-introduced machine 34, hot furnace gas enters toroidal cavity from the passage 11 on the inner drum of leading bucket 9, spirally-guided blade 10 guiding on the inner drum outer surface, the furnace gas rotation is risen, big dirt bits are under the effect of centrifugal force and gravity, return in the stove from the gap of inner drum bottom and to rekindle, the residue dust enters in the cooler 14 from pipeline 13 in company with furnace gas, after the cold wind cooling that air blast blasts in the metal cooling-pipe 15 in cooler 14, enter deduster 31 by pipeline 20 again and carry out dedusting, discharge from blast pipe 35 through air-introduced machine 34 then.The operation principle of large and small hot blast courage 7,8 of the present utility model is with technology is identical at present.

The utility model has removed the chimney of the above tall and big crude benzol of cupola charging mouth, has reduced the manufacturing cost of furnace cupola.And the utility model dust pelletizing system is installed on the ground, furnace gas export temperature low (being no more than 100 ℃), and it is wide that deduster 31 is selected, and installs simply, is easy to the deslagging management; When adding deduster 31 work, the charge door of furnace cupola is closed condition, and furnace gas is not excessive can not to be entered in the deduster with the outer gas of charge door, makes the deduster high efficiency.Therefore, the utility model can guarantee that the furnace gas dust removing effects reaches the dust emission standard of national regulation lastingly reliably.Cooler 14 in the utility model, it not only can reduce the furnace gas export temperature, also make the wind that enters in the furnace cupola become three grades of heating by the large and small hot blast courage two-stage heating in past, the intake air temperature of furnace bottom hot-air mouth is reached more than 350 ℃, like this, tapping temperature height, the molten iron to present thermal type air supply cupola furnace is difficult for further stability and development of advantages such as oxidation, coke adaptability is strong, Jiao's consumption is low.Small blast-heating chamber 8 of the present utility model adopts inner multiple rib type furnace cupola small blast-heating chamber, and big hot blast courage 7 is reduced with the top operating temperature, but the service life of significant prolongation furnace cupola.

Fig. 1 is the structure principle chart of embodiment one.

Fig. 2 is embodiment one a reinforced automatic opening door front view.

Fig. 3 is embodiment one a reinforced automatic opening door vertical view.

Fig. 4 is the vertical face structural representations of embodiment two reinforced automatic opening doors.

Fig. 5 is embodiment two reinforced automatic opening door planar structure schematic diagrames.

Fig. 6 is a rolling hinge arrangement schematic diagram.

Embodiment sees Fig. 1,2,3.As can be seen from Fig. 1, the minimum row of cupola body 1 is high temperature air port 3, and two row's cold air diffusers 5 are arranged above the high temperature air port 3, and big hot blast courage 7 and small blast-heating chamber 8 are equipped with in body of heater 1 top, and wherein small blast-heating chamber 8 is an inner multiple rib type furnace cupola small blast-heating chamber; Conduit 6 links together the bottom of large and small hot blast courage; In this example, the bellows 2 in furnace cupola high temperature air port are connected by airduct 18 with the top of small blast-heating chamber 8, and airduct 18 is sleeved within the airduct 19.Airduct 19 1 ends are connected (technology is for being connected with big hot blast courage bottom at present) with the bottom of small blast-heating chamber 8, the other end is connected with the bellows 4 of cold air diffuser by valve 21.Like this, high low temperature wind all is to distribute in small blast-heating chamber 8, because wind post bake before entering small blast-heating chamber, therefore, this improvement can improve the wind-warm syndrome of cold air diffuser 5 under the situation that the wind-warm syndrome that enters high temperature air port 3 does not reduce.

Cooler 14 shells are garden shape, in several metal cooling-pipe 15 are arranged, their left end is connected with big hot blast courage 7 by pipeline 17, right-hand member is connected with air blast pipeline 16.There is the furnace gas import on the upper left side of cooler 14, and it is connected with leading bucket 9 by pipeline 13, and there is furnace gas export the lower right, and furnace gas export is connected with deduster 31 by pipeline 20.

Deduster 31 is the Wen Shi dust nozzle, and its structure is to be provided with Wen Shi jet pipe 28 in deduster 31, and the furnace gas entrance point of Wen Shi jet pipe 28 is connected with pipeline 20; The pipe inner top of Wen Shi jet pipe 20 is equipped with spiral nozzle 30, and there is tank 24 mouth below in the end; Mouth inserts in the water of tank 24 at the bottom of deduster 31 shells; The end mouth of Wen Shi jet pipe 28 is provided with spirally-guided blade 25 outward, above spirally-guided blade 25, is provided with circular screen 22,23 around the Wen Shi jet pipe 28, and circular screen 22,23 is made for wire, and is connected with 36 volts of following static; Nozzle ring 29 is equipped with in the top of circular screen; The furnace gas export place on deduster 31 tops is provided with rotary blade 32; The furnace gas export of deduster 31 is connected with air-introduced machine 34 by pipeline 33; For saving has water, water for dust removal is designed to follow goes back water, is provided with filter screen 26 in tank 24 that is:, 31 end of deduster mouth inserts the left side of filter screen 26, the right of filter screen 26 is a filtered water, places water pump 27, and water pump 27 is connected with the feed pipe of spiral nozzle 30 with nozzle ring 29.The operation principle of this deduster 31 is: the water rotary-jet that gushes out with spiral nozzle 30 after furnace gas enters in the Wen Shi jet pipe 28 is to the water surface of Wen Shi jet pipe 28 belows, main dust enters in the water, the residue fine dusts rises through 25 rotations of spirally-guided blade with furnace gas, fully contact with the dirty fine liquid particles of nozzle ring 29, remove the part dust again and enter circular screen 22,23, contact with the screen surface that has static, sop up remaining dust and SO ₂, behind the pernicious gas such as CO, furnace gas continues to rise, during through the impeller 32 at deduster 31 tops, gas-water separation, the furnace gas after the purification is entered atmosphere by air-introduced machine 34 sucking-offs from pipeline 35.

The bottom of leading bucket 9 exterior bowls is connected with big hot blast courage 7 by flange, the inner drum horn mouth that is suitable for reading, identical with described in the above-mentioned principle of other structure and operation principle.

Reinforced automatic opening door 12 devices are on the mouth of the top of leading bucket 9, and its structure is seen Fig. 2,3.As seen, the reinforced automatic opening door 12 in this example has the bell 36 that is fixed on the leading bucket 9 top mouths, has charging hole 36 ', the diameter of charging hole 36 ' to be slightly less than horn mouth diameter of leading bucket 9 inner drums upper end in the middle of its among the figure; Front and back at bell 36 have fixed mount 38 respectively, and floating shelf 40 is housed on the fixed mount 38, and floating shelf 40 is the font of falling the mountain, and both sides are the guide post that device has spring 39, and the centre is a depression bar, and depression bar and guide post all are with fixed mount 38 and are slidingly matched; The depression bar bottom is hinge with cant pull bar 42,43 and is connected, and the bottom of cant pull bar 42,43 is hinge with fire door 37,44 that can left-right orientation moves on bell 36 respectively again and is connected; In the present embodiment, the method for fire door 37,44 move left and right is that the roller 45 that four energy left-right orientation are rolled is housed in the front and back of each fire door.When this reinforced automatic opening door was not reinforced, floating shelf was propped up by spring 39, and fire door 37,44 is closed condition.When reinforced, hopper presses down floating shelf 40, and the spring 39 of floating shelf 40 both sides is compressed, and depression bar descends, make cant pull bar 42,43 produce outside horizontal thrust, fire door is pushed open, hopper discharge at this moment is after discharging is intact, hopper is sling, and under the effect of spring 39, floating shelf 40 resets, and fire door is closed.In order to make furnace charge enter burner hearth by reinforced automatic opening door, present embodiment installs a conical hopper 41 on floating shelf 40, and the end mouth diameter of conical hopper 41 is less than the charging hole diameter 36 ' in the middle of the bell 36.

Fig. 4,5,6 has provided the structural representation of embodiment two reinforced automatic opening doors 12.The cupola charging mechanism that provides among the figure is that dolly is climbed the material machine.Reinforced automatic opening door 12 by be lever 48 that rolling hinge (the rolling hinge is seen Fig. 6) is connected at the cylinder 50 of each fire door right back, right-hand member and cylinder 50 and left end and connecting rod 54, install climb bottom the material machine dolly or a side hit iron 52 and at the top of vehicle guide 53 and can with hit iron 52 and touch mutually and close and travel switch 51 that the solenoid directional control valve of control cylinder 50 commutates is formed; Wherein cylinder 50 devices are on bell 36, and the fixed hinge bearing 49 of lever 48 is positioned at the right part of lever 48, and the other end of connecting rod 54 is hinge with fire door 37 and is connected.The operation principle of this reinforced automatic opening door is: when cupola charging, dolly 46 arrives the vehicle guide top under the traction of steel wire rope 47, the iron 52 that hits on it touches travel switch 51, at this moment the solenoid directional control valve commutation of travel switch 51 instruction cylinders 50, change the airintake direction of cylinder 50, cylinder rod stretches out, and promotes the right-hand member of lever 48, make lever 48 around rocker bar bearing 49 rotations, fire door 37,44 is drawn back.Dolly 40 dischargings are intact retreats, and the solenoid directional control valve of travel switch 51 and cylinder 50 resets, and changes the airintake direction of cylinder 50 again, makes in the cylinder rod retraction cylinder, and two fire doors are closed.Other parts in the present embodiment are identical with embodiment one.

Claims (5)

1, a kind of wind supplying cupola has body of heater 1, and large and small hot blast courage 7,8 is equipped with on body of heater 1 top, and the bottom of large and small hot blast courage is communicated with by conduit 6; Row is high temperature air port 3 at the furnace bottom end one, and there are number row cold air diffusers 53 tops, high temperature air port; The bottom of big hot blast courage 7 is connected with the bellows 4 of cold air diffuser by airduct 19, and valve 21 is housed on the airduct 19; The top of small blast-heating chamber 8 is connected with the bellows 2 in high temperature air port by airduct 18, and airduct 18 is sleeved within the airduct 19, it is characterized in that:

(1) leading bucket 9 is arranged, it is inside and outside two-layer, and interlayer is a toroidal cavity; Have row's passage 11 on the internal layer staving at least, its outer surface is provided with spirally-guided blade 10, is provided with the gap between the top mouth of Di Kou and big hot blast courage 7; The end mouth device of outer staving is on big hot blast courage 7;

(2) device has reinforced automatic opening door 12 on the top mouth of leading bucket 9;

(3) cooler 14 is arranged, establish several metal cooling-pipe 15 in it, an end of metal cooling-pipe 15 is connected with air blast by pipeline 16, and the other end is connected with big hot blast courage 7 by pipeline 17; There is the furnace gas import on the upper left side of cooler 14, and it is connected with leading bucket 9 by pipeline 13, and there is furnace gas export the lower right, and furnace gas export is connected with deduster 31 by pipeline 20.

2, wind supplying cupola according to claim 1 is characterized in that small blast-heating chamber 8 is inner multiple rib type furnace cupola small blast-heating chamber.

3, wind supplying cupola according to claim 1 is characterized in that the bellows 4 of cold air diffuser are connected with the bottom of airduct 19 with small blast-heating chamber 8 by valve 21.

4, wind supplying cupola according to claim 1, it is characterized in that reinforced automatic opening door 12 is by the bell 36 that is fixed on the leading bucket 9 top mouths, the fixed mount 38 of bell 36 front and back, floating shelf 40 on the fixed mount 38 and fire door 37,44 compositions that can left-right orientation moves on bell 36; Wherein: charging hole 36 ' is arranged in the middle of the bell; Floating shelf 40 is the font of falling the mountain, and both sides are guide posts that device has spring 39, and the centre is a depression bar, and guide post and depression bar all are with fixed mount 38 and are slidingly matched; The depression bar bottom is hinge with the top of two cant pull bars 42,43 and is connected, and the bottom of cant pull bar 42,43 is hinge with fire door 44,37 respectively and is connected; Conical hopper 41 is housed on floating shelf 40.

5, according to claim 1,7 described wind supplying cupolas, it is characterized in that reinforced automatic opening door 12 by be at the cylinder 50 of each fire door right back, right-hand member and cylinder 50 and left end and connecting rod 54 the hinged lever 48 that rolls, device climb bottom the material machine dolly or a side hit iron 52 and at the top of vehicle guide 53 and can with hit iron 52 and touch mutually and close and travel switch 51 that the solenoid directional control valve of control cylinder 50 commutates is formed; Wherein cylinder 50 devices are on bell 36, and the fixed hinge bearing 49 of lever 48 is positioned at the right part of lever 48, and the other end of connecting rod 54 is hinge with fire door and is connected.

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