CN201535613U

CN201535613U - Thin furnace lining air-cooled combined hot wind cupola

Info

Publication number: CN201535613U
Application number: CN2009201787841U
Authority: CN
Inventors: 赵文鹤
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-14
Filing date: 2009-10-14
Publication date: 2010-07-28
Anticipated expiration: 2019-10-14

Abstract

The utility model discloses a thin furnace lining air-cooled combined hot wind cupola, which comprises a track, rollers, a furnace hearth, a front furnace, an air hose joint, a fusion joint, a preheating joint and a hot air joint, wherein the joints are connected together through hinged locking mechanisms so as to form a furnace body, the joints of the furnace are separable, the preheating joint and the hot air joint can move up and down, the front furnace can move horizontally on the track together with the furnace hearth, the air hose joint and the fusion joint, an electric hoist mounted on an I beam can hoist the fusion joint and the air hose joint to the ground, and the cold air blown from a blower enters the air hose joint, the fusion joint, the hot air joint and the preheating joint sequentially through an air pipe and then turns into hot air with a temperature amounting to 250 to 300 DEG. The service life of a hot air liner is 3 to 4 times longer than a traditional cupola, the normal blowing-in time for smelting lasts for 8 to 10 hours, and the external maintenance outside the furnace can be realized.

Description

The air-cooled combined type hot blast of thin-lining furnace cupola

Technical field

The utility model relates to the Foundry Production field, and a kind of is the furnace cupola that fuel is used to melt molten iron with the coke, is particularly useful for the following furnace cupola of 7T/H.

Background technology

Present known furnace cupola has cold blast cupola, blast-heating cupola, water-cooled thin-lining furnace cupola, water-cooled liningless cupola etc.The easy coking in cold blast cupola air port, STRENGTH ON COKE quality requirement height, coke-iron-rate is low; Blast-heating cupola wraps again and expands two kinds in internal heat type furnace cupola and external-heat furnace cupola, wherein the hot blast of internal heat type furnace cupola is by the close muscle hot blast courage that is contained in fusion zone top or is contained in the indoor heating tube generation of charge door top hot blast, directly with the high-temperature furnace gas contact, the life-span is not long for the inwall of close muscle hot blast courage; The hot blast chamber volume that is installed in charge door top is bigger, and the steel consumption amount is big, and for the CO (13%-22%) that can obtain sufficient amount makes the furnace gas burning, coke-iron-rate is also lower; The fusion zone of water jacket cupola uses no or little furnace lining, the consumption of refractory material is reduced greatly, furnace life significant prolongation, but the heat that cooling water is taken away reaches (12%-16%) that coke sends total amount of heat, much larger than other kind cupola lining thermal losses (3%-6%), be not suitable for the following furnace cupola of melting rate 5T/H.Above-mentioned furnace cupola adds at the bottom of the drop bottom furnace from the whole body of heater of the most employing of structure, and employing activity cupola well is also arranged, and is comparatively convenient when movable cupola well formula furnace cupola is repaiied stove, but need operate comparatively loaded down with trivial details with several jack stand cupola wells during butt joint.The workman need be drilled in operation in the stove when above-mentioned furnace cupola was repaiied stove, the space is narrow and small in the burner hearth, working condition is abominable, the workman is damaged by furnace lining or is fallen the accident that piece injures by a crashing object and happens occasionally, be difficult to when repairing stove by plant equipment, labour intensity is big, and ftractureing easily by the manual refractory material that is attached to the furnace cupola inwall comes off, and has accelerated the scaling loss of furnace wall.

The air-cooled inclination of utility model patent thin-lining of the inventor application combined type coke cupola furnace (patent No. ZL 200620005051.4) of tapping a blast furnace discloses a kind of like this cupola furnace, it is by the underneath type forehearth, separate joint, wind band joint, the fusing joint, pre-thermal center is formed, tiltable is tapped a blast furnace, merogenesis is repaiied stove, but owing to structural reason, underneath type forehearth dress iron water amount is very few, be unfavorable for big castings production, for security consideration, the melting rate of this stove is not more than 3T/H, and the formula structure that tilts to tap a blast furnace is unfavorable for the installation of deduster.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of energy hot air smelting, can decompose body of heater very easily, realize that machinery is repaiied stove outside the stove, the cupola well of not jack-uping butt joint body of heater, avoid the hot blast courage directly to contact with furnace gas, the slow down scaling loss speed of furnace lining prolongs the combined type furnace cupola of smelting time.

In order to solve the problems of the technologies described above, the utility model has adopted the air-cooled combined type hot blast of a kind of like this thin-lining furnace cupola, its feature comprises: track, roller, cupola well, forehearth, wind band joint, fusing joint, pre-thermal center and hot blast joint, connect by the hinge type retaining mechanism between each joint, form body of heater; Outer wall at the hot blast joint is welded with 4 transverse slats with holes, in the transverse slat hole, be installed with bolt of long stem, the corresponding aperture that bolt passes on the platform is fixed with nut, when the locking device of opening between fusing joint and the pre-thermal center, spur 4 bolts simultaneously with external force, can drive the hot blast joint moves simultaneously with pre-thermal center, apply the external force that is parallel to track to forehearth again, forehearth is together with cupola well, wind band joint, the fusing joint, walk to the track opposite side by the rotation of roller, the electric block that is installed on the I-beam hangs fusing joint and wind band joint on the ground respectively, the decomposition of realization furnace cupola and the stove stove of dispatching workers to do on-site repairs; Forehearth and cupola well are welded into inner lining refractory for the individual layer steel plate; Wind band joint, fusing joint, pre-thermal center and hot blast joint structure are identical, all are the refractory materials by internal layer, and inner plating, fin, la m, heat-insulation layer and lamina rara externa are formed; Wind band joint, the fusing joint, pre-thermal center and hot blast joint are formed a big hot blast courage, the cold wind that bloats from air blast enters wind band joint by airduct successively with the direction perpendicular to the body of heater axis, the fusing joint, on hot blast joint and the pre-thermal center by inner plating, the folder that fin and la m are formed is aerial, become hot blast, hot blast is sent into bellows by corresponding pipeline, send in the stove by the eye of wind that links to each other with bellows, realize hot air smelting: the wind that air blast bloats flows in the hot blast courage, also taken away the part heat of furnace lining savings by the process of cold heating, make the furnace lining cooling, the scaling loss speed of the furnace lining that slowed down.Because the internal layer of whole body of heater all has the protection of refractory material to avoid the hot blast courage with directly the touching of furnace gas, and has prolonged the service life of hot blast courage greatly.

Another embodiment of the present utility model is, hot blast joint and the pre-thermal center formula structure that is welded into one, forms big pre-thermal center, and hot blast is in proper order: from the advanced inlet air band joint of wind that blower fan bloats, and the fusing joint, big pre-thermal center enters bellows again, sends in the stove by the eye of wind.

Beneficial effect

The utility model resolves into four sections to the body of heater of furnace cupola very easily, wind band joint and the fusing joint repaired are placed on the ground level, repairing furnaceman people stands in outside the stove, the cupola drop crucible can be placed in center at stove, the intermediate frequency furnace furnace lining is the same to beating, use pneumatic tools, use the refractory of doing to make cupola lining.The furnace lining density of making like this is big, and the intensity height does not ftracture, and does not come off, and can add flux (lime stone) less during melting, and slag amount is 1/3rd of a common blast-heating cupola.Wind band joint, the fusing joint, pre-thermal center and hot blast joint are formed a big hot blast courage, and heating surface area is increased greatly, though the isolation of refractory material is arranged, this hot blast temperature still can reach this hot blast temperature of 250-still can reach 300 ℃.The life-span of the hot blast courage of utility model furnace cupola, the blow-on time of normal smelting can reach 8-10 hour than long 3-4 times of traditional furnace cupola.

Description of drawings

Be described in further detail below in conjunction with accompanying drawing and embodiment of the present utility model:

Figure (1) is a structural representation of the present utility model.

Figure (2) is the another kind of embodiment structural representation of the utility model.

Figure (3) is the utility model body of heater decomposing schematic representation.

The specific embodiment

The utility model embodiment shown in the figure (1) as can be known, track 1 fixes on the ground, forehearth 3 and cupola well 4 weld together, they form with welded steel plate, be with certain thickness refractory brick within it, in their bottom roller 2 is housed, wind band joint 7 is placed on the cupola well 4, on wind band joint 7, also be welded with the bellows 5 and the eye of wind 6, fusing joint 8, pre-thermal center 9 and hot blast joint 10 are superimposed successively, link together by hinge type retaining mechanism 24 between each joint, be with refractory brick 11 in the inboard of the inner plating 12 of hot blast joint 10 as can be known from the partial enlarged drawing of figure (1), the outside of inner plating 12 is welded with fin 13, be welded with la m 14 in the outside of fin 13, the la m 14 outer alumina silicate warming plates 15 that post, the outside of warming plate 15 is welded with lamina rara externa 16, manufacture inner plating 12, fin 13, la m 14, the material of lamina rara externa 16 is Q235 steel plates, the section structure of all the other each joints is the same, no longer repeat, the outside at the lamina rara externa 16 of hot blast joint 10 is welded with four transverse slats 17, bolt of long stem 18 passes the preformed hole on transverse slat 17 and the platform 19, and is fixing with nut 20.When the external force that makes progress acts on the bolt of long stem 18 simultaneously, bolt 18 will spur hot blast joint 10 and pre-thermal center 9 moves upward, with forming enough slits between the fusing joint 8, forehearth 3, cupola well 4, wind band joint 7 and fusing joint 8, under the external force effect that is parallel to track 1,, move to the opposite side of track 1 by the rotation of roller 2, the electric block 21 that is installed on the I-beam 22 hangs fusing joint 8 and wind band joint 7 on the ground, finishes body of heater and decomposes.

The cold wind that bloats from air blast 25 is by airduct 23, sends into respectively in the space that is formed by inner plating 12 and la m 14 of wind band joint 7, fusing joint 8, hot blast joint 10, pre-thermal center 9 and enters bellows 5 again, passes through the eye of wind 6 at last, sends in the burner hearth, finishes the hot blast process.

Of the present utility model another kind of embodiment shown in the figure (2) as can be known, hinge type retaining mechanism 24 between pre-thermal center 9 and the hot blast joint 10 is removed, as a whole this two joints weldering, be referred to as big pre-thermal center (9), adjusting the air intake trend simultaneously is, the cold wind that bloats from air blast 25 passes through airduct 23, send into respectively in the space that forms by inner plating 12 and la m 14 of wind band joint 7, fusing joint 8, big pre-thermal center (9) and enter bellows 5 again, enter the eye of wind 6 at last, send in the burner hearth, finish the hot blast process.

Claims

1. the air-cooled combined type hot blast of a thin-lining furnace cupola is characterized in that track, roller, cupola well, forehearth, wind band joint, fusing joint, pre-thermal center and hot blast joint, connects by the hinge type retaining mechanism between each joint, forms body of heater; Outer wall at the hot blast joint is welded with 4 transverse slats with holes, in the transverse slat hole, be installed with bolt of long stem, the corresponding aperture that bolt passes on the platform is fixed with nut, when the locking device of opening between fusing joint and the pre-thermal center, spur 4 bolts simultaneously with external force, can drive the hot blast joint moves simultaneously with pre-thermal center, apply the external force that is parallel to track to forehearth again, forehearth saves, walks to the track opposite side by the rotation of roller together with cupola well, wind band joint, fusing, and the electric block that is installed on the I-beam hangs fusing joint and wind band joint on the ground respectively; It is aerial that the cold wind that bloats from air blast enters the folder of being made up of inner plating, fin and la m on wind band joint, fusing joint, hot blast joint and the pre-thermal center by airduct successively with the direction perpendicular to the body of heater axis, become hot blast, hot blast is sent into bellows by corresponding pipeline, sends in the stove by the eye of wind that links to each other with bellows.

2. according to the air-cooled combined type hot blast of the described thin-lining of claim 1 furnace cupola, it is characterized in that: except that cupola well and forehearth, the section of all the other every joint bodies of heater all is made up of refractory material, inner plating, fin, la m, heat-insulation layer and lamina rara externa.

3. according to the air-cooled combined type hot blast of the described thin-lining of claim 1 furnace cupola, it is characterized in that: also can be hot blast joint and the pre-thermal center formula structure that is welded into one, form big pre-thermal center, hot blast is in proper order: the advanced inlet air band of wind that bloats from blower fan saves, the fusing joint, big pre-thermal center enters bellows again, sends in the stove by the eye of wind.