CN2363258Y

CN2363258Y - Continuous coal furnace for heat treatment

Info

Publication number: CN2363258Y
Application number: CN 98213797
Authority: CN
Inventors: 卢立云; 蔡月华
Original assignee: WENZHOU CITY FUME PURIFYING DESIGN INST
Current assignee: WENZHOU CITY FUME PURIFYING DESIGN INST
Priority date: 1998-05-09
Filing date: 1998-05-09
Publication date: 2000-02-09
Anticipated expiration: 2008-05-09

Abstract

The utility model relates to a continuous coal furnace for heat treatment, composed of a combustion chamber and three heating chambers communicated with each other. Coal is combusted in different zones through a combustion machine with a bar-drawing fire grate, and black smoke is combusted out in the process of combusting; when flame heats a middle heating chamber through a flame entering path, a left and a right two heating chambers utilize the radiation heat transfer of the middle heating chamber to carry out preheating and heat preservation for workpieces so as to achieve the technological requirements of the different temperatures of the workpieces on three dollies; the combustion machine continuously combusts, and workpiece dollies orderly go out and enter the continuous coal furnace for heat treatment through timing so as to carry out heat treatment for the workpieces in a circulating way. The utility model alters the traditional technology that furnaces are ignited and heated up one by one, and eliminate black smoke pollution.

Description

The coal-fired heat-treatment furnace of continous way

The utility model relates to a kind of coal-fired heat-treatment furnace of continous way that workpiece is heat-treated.

Traditional heat-treatment furnace (comprising metal heat treatmet and nonmetal heat treatment), its burner skill is: igniting → coal → low temperature → high temperature → be incubated → lower the temperature → come out of the stove, all manual operations.Each stove all will begin to heat up from black furnace, be heated to temperature required after cooling again, went out a stove in general 8～16 hours.Not only efficient is low, and meaningless ground has consumed fuel more in the process that heats up and lower the temperature.Simultaneously, fuel can not fully burn during owing to low temperature, adds artificial disposable throwing coal, discharges with air-flow without the carbon blacks that burn cinder in a large number, forms a burst of black smoke, has polluted environment.

The purpose of this utility model is: one, adopt " stripping fire grate combustor " to replace manual throwing coal or other simply to advance the coal mode, make it to burn, eliminated black smoke pollution; Two, adopt disposable igniting, the new technology of not blowing out of continuous burning reaches the raising work efficiency, reduces fuel consumption.

The utility model is made up of combustion system and heating system.According to coal burning mechanism, reciprocal twitch, soft coal by " stripping fire grate combustor " fire grate automatically, evenly enter the combustion chamber, earlier after preheating, destructive distillation, burn, burn the subregion burning, black smoke is burnt in combustion process do not escape.The flame that the combustion chamber produces directly enters heating clamber workpiece is carried out heat treated then by advancing quirk.

This continuous oven expects that two chassis that loaded workpiece cut out fire door in position, chamber and position, import material chamber to middle from import one thruster earlier before igniting.Middle material chamber is from room temperature, and flame directly is heated to temperature required by advancing quirk to workpiece.At this moment, be placed on the workpiece on another side (or both sides) the heating clamber chassis, the radiation of material room temperature, heat transfer in the middle of being subjected to, temperature is also improving.But, make it keep the requirement of preheating and insulation owing to control into and out of the restriction and the two rim charge chamber smoke outlet flues layings of quirk.Therefore, when technological requirement that material chamber in centre reaches a high temperature, also reached the requirement of preheating and insulation substantially into and out of the material room temperature on both sides.At this moment, the chassis workpiece that exports a side can be pulled out outside the stove, and import one side waits for that a chassis workpiece of heat treated pushes furnace chamber thereupon then, moves on to outlet and middle material position, chamber thereby promote two chassis in the inside, and whole not blowing out of operation circulation is carried out.

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

Accompanying drawing 1 is the utility model combustion system schematic diagram.

Accompanying drawing 2 is the utility model heating clamber structural representations.

Among the figure 1, stripping fire grate combustor 2, advance quirk 3, chassis 4, lower flue 5, guide rail 6, fire door 7, heating clamber (left side) 8, heating clamber (in) 9, disconnection device 10, heating clamber (right side).

Shown in Figure 1, the utility model is the combustion system of forming with stripping fire grate combustor (1).The flame that the combustion chamber produces heats the workpiece on the chassis (3) by quirk (2), and the flue gas after the heat treated is discharged by lower flue (4).

Three heating clambers (7) among Fig. 2, (8), (10) be located at two fire doors (6-1) and (6-2) between, can hold three chassis and place.Chassis is placed on the guide rail (5), and guide rail extends the outer certain distance of furnace chamber, allow into and out of chassis place.Leave disconnection device (9) between three chassis, heating clamber (7) is identical with the volume of (10), gets final product slightly greatly than chassis.The both sides and the vault of middle heating clamber (8) respectively leave into quirk (2) and smoke outlet flue (4).The requirement of workpiece heating-up temperature is neglected in its space greatly and exhaust gas volumn calculates.

The utility model has fundamentally been eliminated the pollution of black smoke to environment by above-mentioned design, reduces coal consumption, reduces work hours, and improves work efficiency, and very significant comprehensive benefit is arranged.

Claims

1, a kind of coal-fired heat-treatment furnace of continous way that is used for heat treatment of workpieces, form by combustion chamber and heating clamber, it is characterized in that: constitute the combustion chamber by stripping fire grate combustor (1), the quirk (2) that advances that is located at the one side directly is communicated with heating clamber (8), heating clamber (8) connects with heating clamber (7) and heating clamber (10) again, fire door (6-1) and fire door (6-2) are located at the heating clamber (7) and heating clamber (10) outside, guide rail (5) is by three heating clambers and extend to the outer certain distance of two fire doors, and chassis (3) is placed on the guide rail.

2, the coal-fired heat-treatment furnace of continous way according to claim 1, it is characterized in that: heating clamber (7) is identical with heating clamber (10) volume, gets final product slightly greatly than chassis, and into quirk (2) and smoke outlet flue (4) are respectively left in the both sides of heating clamber (8) and top.

3, the coal-fired heat-treatment furnace of continous way according to claim 1, it is characterized in that: three heating clambers (7), (8), (10) are located between two fire doors (6-1), (6-2), can hold three chassis (3) and place, leave disconnection device (9) between three chassis.