CN2295176Y

CN2295176Y - Crucible-less aluminium-alloy continuous smelting heat-insulation furnace

Info

Publication number: CN2295176Y
Application number: CN 97207003
Authority: CN
Inventors: 修毓平; 吴炳尧
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-01-17
Filing date: 1997-01-17
Publication date: 1998-10-21
Anticipated expiration: 2007-01-17

Abstract

The utility model relates to a crucible-less aluminium-alloy continuous smelting heat-insulation furnace, which is an aluminium-alloy high-pressure casting, a low pressure casting and a gravity casting furnace. The utility model comprises a furnace body and a combustion engine. The utility model is characterized in that one side of the furnace body is provided with a combustion engine which has double functions of melting and thermal insulation. Compared with the existing smelter, the utility model has the advantages that the burning loss is reduced obviously, the cost is reduced by 40-50% and the thermal efficiency is improved to 150%.

Description

No crucible type aluminium alloy continuous melting holding furnace

The utility model is a kind of aluminium alloy high pressure casting, low pressure casting and gravitational casting stove, particularly about aluminum alloy melting and the no crucible furnace of insulation.

Aluminium alloy always all is designed to respectively dispose a combustor with no crucible type continuous melting and holding furnace and finishes fusing and insulation in melting chamber and moist closet.Since the price height of combustor own, and need outfit independently to control combustion system separately, making the structure and the complicated operation of stove, cost is higher, has limited it and has applied.In addition, at melting chamber and moist closet combustor being set respectively makes in fusing and the moist closet hot-fluid holdup time short, heat loss increases, the thermal efficiency generally only is 20～30%, moist closet internal combustion machine flame directly blows to the aluminium liquid surface of insulation on the other hand, also cause aluminium liquid oxidation scaling loss more, aluminium liquid inherent quality reduces.

The purpose of this utility model is to provide and has a kind ofly only just had both aluminum alloy melting and insulation double effects with a combustor, and the aluminium alloy with domes does not have crucible furnace.

The utility model is to realize like this.It comprises furnace body 1, combustor 2, and wherein furnace body 1 sets up melting chamber and moist closet separately, it is characterized in that furnace body 1 one sides are provided with one and have both fusing and the combustor 2 that is incubated double effects.

The utility model adds liftable flashboard owing to only adopt a combustor, flame directly not to blow to aluminium alloy liquid level in the moist closet, and the scum silica frost that has intercepted in the melting chamber enters moist closet, therefore can reduce the oxidization burning loss of aluminium alloy, makes cleaning aluminium alloy.Circular vault makes that to lead fiery angle accurate in the stove, inner wall smooth, and thermal radiation capability improves.Under the condition of identical melting rate, the utility model is compared with the smelting furnace of present use, and scaling loss obviously descends, and cost descends 40～50%, and the thermal efficiency is increased to about 50%.

Fig. 1 is a front view of the present utility model.

Fig. 2 is the cutaway view of Fig. 1 along the A-A line.

Fig. 3 is the vertical view of Fig. 1.

Below in conjunction with accompanying drawing the utility model is described in further detail.

A combustor with long-flame burners 2 that is complementary with melting rate is placed this stove of stove 1 melting chamber and moist closet central authorities top, furnace body one side is a moist closet, insulation side lifting gate 3 is melting chamber to the space of opposite side, furnace charge adds from the melting chamber import, and the discharging interior waste gas of coming out of the stove since then, the furnace charge of preheating simultaneously.The furnace chamber space that 2 one sections of combustors are laid by furnace body 1 central authorities is circular vault, form the helical form burning in the burner hearth to guarantee that combustor 2 nozzle flames import along circular vault horizontal tangent direction, thereby the expansion burnt area reaches and takes into account fusing and the heat energy requirement that is incubated two operating rooms.In addition, in order to guarantee to flow to the heat energy of fusing and moist closet by the arts demand reasonable distribution, near combustor 2 one sides lifting gate 3,4 is set at melting chamber and moist closet respectively, regulate the aperture of two gates, promptly regulate the aperture of combustion emission passage, also just reached the purpose of adjusting to moist closet and melting chamber distribution heat energy ratio.Under normal melting and heat preservation state, the position that insulation side lifting gate 3 should drop to about the following 15cm of bath surface, to guarantee that slag and burnt gas do not pollute the aluminium liquid of insulation, simultaneously be in position on the bath surface at the lifting gate 4 of melting chamber one side, burnt gas is all overflowed from the reinforced exhaust outlet of holding concurrently, and this moment, the heat energy of combustor 1 release all was used for melting aluminum and preheating furnace charge.When temperature of aluminum liquid is lower than setting value in temperature-sensing element shows moist closet, then will be incubated side lifting gate 3 by a cover coordinated control system raises, to melt side lifting gate 4 simultaneously and lower, and make a part of hot-fluid be assigned to the moist closet side, temperature of aluminum liquid rises in the moist closet thereby make.If temperature of aluminum liquid exceeds setting value in the moist closet, then coordinated control system will be incubated side lifting gate 3 and drop to normal operating position, and suitably side lifting gate 4 is melted in raising, burn-off rate is accelerated, more melt but the lower aluminium liquid of temperature mixes with the aluminium liquid of higher temperature in the moist closet arranged, reach the continuity fusing under design temperature and be incubated.

Claims

1. a no crucible type aluminium alloy continuous melting holding furnace comprises furnace body (1), combustor (2), it is characterized in that furnace body (1) one side is provided with one and has both fusing and the combustor (2) that is incubated double effects.

2. no crucible type aluminium alloy continuous melting holding furnace according to claim 1 is characterized in that smelting furnace is provided with the insulation side lifting gate (3) and the fusing side lifting gate (4) of control flame, hot-fluid trend and intensity respectively in moist closet and melting chamber.

3. no crucible type aluminium alloy continuous melting holding furnace according to claim 1, this section burner hearth that it is characterized in that laying combustor (2) is a vault.

4. according to claim 1 or 3 described no crucible type aluminium alloy continuous melting holding furnaces, it is characterized in that the burner hearth vault is for circular.

5. no crucible type aluminium alloy continuous melting holding furnace according to claim 1 and 2 is characterized in that the set import of melting chamber is the furnace charge charge door Waste gas outlet of holding concurrently.