CN2650043Y

CN2650043Y - Blast-free coke melting-holding furnace

Info

Publication number: CN2650043Y
Application number: CN 03238242
Authority: CN
Inventors: 刘森麟; 李树伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-18
Filing date: 2003-09-18
Publication date: 2004-10-20
Anticipated expiration: 2013-09-18

Abstract

A blast-free coke type smelting and holding furnace is provided, which consists of a furnace body, a grate, an ash bucket seat, a throttle and a water containing dust tray. The air supply for coke combustion can be controlled by adopting the proper hearth inner diameter and height and grate clearance, the opening size of throttle is adjusted to facilitate the metal in crucible heated and smelt, and the furnace temperature can be controlled with no blower required, the dust tray can be used for removing the dust, which can avoid the dust flying, the throttle has a sealing strip to ensure the long retaining duration. The utility model has simple structure, low cost, high thermal efficiency, energy saving, no noise and dust, and easy operation, thereby realizing the up-to-standard environmental protection purpose.

Description

No air blast coke formula melting and heat preservation stove

Affiliated technical field

The utility model relates to the fusing before a kind of die casting that can be used for non-ferrous metal (aluminium, zinc, tin), casting, the melting and the industrial furnace of insulation, belongs to the non-ferrous metal process equipment.

Background technology

Non-ferrous metal processing, need die casting or casting will be carried out behind the non-ferrous metal melting again, at present, metal molten is adopted melting furnace more, the heating of melting furnace can use combustion of coke, fuel oil or electric energy to realize, that the melting furnace that adopts coke to make fuel has is simple in structure, cost is low, advantages of simple operation, but because the burning of coke will be by controlling heat temperature raising with the air blast air blast, thereby it is easily overheated to exist temperature, crucible bottom is perishable, heat loss is big, and dust is big, and environmental condition difference and the frequent deashing of need be the shortcoming of blow-on again.

Summary of the invention

In order to overcome the above-mentioned shortcoming of existing coke formula melting furnace, the utility model provides a kind of no air blast coke formula melting and heat preservation stove, need not to use the air blast air blast, only need by opening the size of stove air door, control feeds the air capacity in the stove, just can satisfy coke burning heat temperature raising, realize the requirement of control furnace temperature, thereby overcome the shortcoming that adopts the heating of air blast blast roasting to cause.

The technical scheme that its technical problem that solves the utility model adopts is: improve on the structure of existing small-sized melting furnace, select fire bars spacing in suitable furnace height and the grate, it is 700 millimeters to 900 millimeters that the utility model is selected for use in the burner hearth internal diameter Φ, furnace height (being the distance of grate to furnace roof) H is 812 millimeters～1044 millimeters, fire bars spacing B is 60 millimeters～75 millimeters, when burning, coke produces pressure differential at the bottom of making furnace roof and grate, air just enters grate for the coke burning by the air door at furnace bottom place, greatly then the coke quantity combusted is big for air mass flow, otherwise it is opposite, therefore by controlling the size of door opening, just can regulate the burning degree of coke, the control furnace temperature reaches metal molten, the purpose of insulation; The employing ash-pan that is filled with water carries out warm formula deashing, not only can be combustion-supporting but also can avoid dust to fly upward, and air door installs sealing strip additional can realize staying long purpose of stove time.

The beneficial effects of the utility model are that furnace binding is simple, reliable, cost is low, need not air blast, and thermal efficiency height is saved the energy, noiselessness, and no airborne dust, easy to operate, reach environmental protection requirement.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model AA sectional drawing.

Fig. 3 is the utility model sectional view.

Among the figure: 1, bell, 2, stove outer covering, 3, insulating, 4, burner hearth, 5, crucible, 6, crucible holder, 7, grate, 8, the ash bucket seat, 9, air door, 10, sealing strip, 11, the ash-pan that is filled with water, 12, coke.

The specific embodiment:

See Fig. 1,2,3, the utility model is made up of body of heater, bell, grate, ash bucket seat, air door and the ash-pan that is filled with water, body of heater is made of burner hearth 4, isolation insulation layer 3 and stove outer covering 2, burner hearth 4 adopts fire-resistant village material one-time cast-forming or is built into, 700 millimeters～900 millimeters of its internal diameters (in the Φ), furnace height (H) is 812～1044 millimeters; Insulating 3 adopts expanded perlite, and stove outer covering 2 adopts steel plate to roll and forms; Bell 1 usefulness refractory material is made; Ash bucket seat 8 adopts common brick to be built into outer batch heat resistance concrete, and its top can support body of heater and frame holds grate 7, and its interior thorax such as funnel-form also have square ventilating duct, and air door 9 is installed in the ventilating duct outlet, and the ash-pan 11 that is filled with water can be placed in its bottom; Grate 7 is made up of several casting pig fire bars, and frame is put in the top of ash bucket seat 8, the fire bars of grate 7 be 60～78 millimeters apart from gap (B), both can support coke, it is combustion-supporting to ventilate again; Crucible 5 is graphite or cast-iron pot, and crucible holder 6 is positioned on the grate 7 for refractory brick; Steel air door 9 usefulness graphite packings are made sealing strip 10; The ash-pan 11 that is filled with water of steel is the individual narrow rectangle dish in the wide end of, and fills clear water in the dish, and during deashing, lime-ash falls by water-wet, avoids dust to fly upward.

Below in conjunction with accompanying drawing narration the utility model operation principle process.

At first carry out baker before the blow-on; putting into behind the baker needs molten metal in crucible 5 again; add charcoal on grate 7; add coke 12 again after lighting charcoal; this moment, air entered in the stove by air door 9; enter the coke burning zone through grate 7; flue gas is upwards overflowed through bell 1 circular hole; the red-hot coke layer that burns surrounds crucible 5 makes metal be heated fusing; controlled amount system air quantity and coke quantity combusted that control air door 9 is opened; the control furnace temperature, the steam that produces at the ash-pan 11 that is filled with water during deashing operation regularly enters red-hot coke layer and is vaporized, and the water-gas of generation rises to the burned and heating of metal of furnace roof; the protection metal bath surface reduces oxidation; add coke termly, but just continuous operation of stove, when closing air door 10 because of sealing strip 11 sealing is arranged; can realize staying the stove time long, need not blowing out repeatedly and blow-on again.

Fig. 1 is the utility model Figure of abstract.

Claims

1. no air blast coke formula melting and heat preservation stove, form by body of heater, grate, ash bucket seat, air door and the ash-pan that is filled with water, it is characterized in that: the internal diameter of body of heater internal furnace (4) is that 700 millimeters～900 millimeters, height H are 812～1044 millimeters, and the fire bars clearance distance B of grate (7) is 60～78 millimeters.

2, no air blast coke formula melting and heat preservation stove according to claim 1 is characterized in that air door (9) is added with sealing strip (10).

3, no air blast coke formula melting and heat preservation stove according to claim 1, the ash-pan (11) that it is characterized in that being filled with water were that a last wide end is narrow, the steel rectangle dish of interior dress clear water.