CN111879116A

CN111879116A - Billet steel smelting gas walking beam furnace sectional heating mechanism

Info

Publication number: CN111879116A
Application number: CN202010756911.2A
Authority: CN
Inventors: 汪东; 李明; 李鹏
Original assignee: Taixing Tianyi Metallurgical Technology Development Co ltd
Current assignee: Taixing Tianyi Metallurgical Technology Development Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2020-11-03

Abstract

The invention relates to the technical field of walking beam furnaces, and discloses a sectional heating mechanism of a billet smelting gas walking beam furnace, which comprises a support frame and is characterized in that: the top fixed mounting of support frame has the back timber, the both sides fixed mounting of support frame has the stand roof beam, the top fixed mounting of back timber has the air-blast cabin, the inside fixed mounting in air-blast cabin has the air-blower, the bottom of air-blower is provided with high wind pressure cabin, the bottom in high wind pressure cabin is run through and is provided with the guide duct. This steel billet is smelted step-by-step heating furnace section heating mechanism of gas through the air-blower, can continuously be gone into to the furnace body inner chamber with outside air and be blasted in, for the inside combustion-supporting of providing sufficient air of furnace body, make the work piece heating more abundant. Through set up the air distribution chamber in combustion mechanism inner chamber periphery, be provided with the air distribution hole between air distribution chamber and the bocca for the fuel and the air mix blowout of bocca make the fuel burning more thorough, have effectively improved fuel utilization ratio.

Description

Billet steel smelting gas walking beam furnace sectional heating mechanism

Technical Field

The invention relates to the technical field of walking beam furnaces, in particular to a sectional heating mechanism of a gas walking beam furnace for billet smelting.

Background

The walking beam type heating furnace is divided into a walking beam type heating furnace and a walking bottom type heating furnace. The step beam type is used for the large section of the steel material, and the step bottom type is used for the small section of the steel material. The charging and discharging modes are divided into: side-in side-out, end-in side-out, and end-in end-out, the first two are commonly used. The furnace has fixed furnace bottom and step furnace bottom, or fixed beam and step beam. The former is called a walking-beam furnace and the latter is called a walking-beam furnace. The walking beam of a heating furnace for steel rolling is generally composed of water-cooled tubes. The walking beam furnace can heat the blank up and down.

The improved step heating furnace includes furnace body, side walls of the furnace body are low cement material layer, heat insulating brick layer and aluminium silicate fiber felt heat insulating layer from inside to outside, the furnace body is divided into preheating section, heating section and soaking section, the side walls of two sides of the heating section are equipped with flame regulating combustion mechanism, the upper heating section of the soaking section is equipped with flat flame combustion mechanism, the lower heating section of the soaking section is equipped with flame regulating combustion mechanism, the mixed gas pipeline of gas and air of the flame regulating combustion mechanism is equipped with electromagnetic valve and regulating valve, the mixed gas pipeline of gas and air of the flat flame combustion mechanism is equipped with regulating valve, and the air main pipeline and gas main pipeline are set on the furnace top. The heating furnace is widely used in various fields of heat treatment, surface treatment, building materials, electronics, materials, light industry, daily chemicals, pharmacy and the like.

At present, the stepping of a workpiece is realized by reciprocating motion of ascending, advancing, descending and retreating of a walking beam in most domestic stepping heating furnaces. The step workpiece is heated by a combustion mechanism at the top of the heating furnace, and because fuel combustion needs air for assisting combustion, the space in the heating furnace is limited, and the fuel combustion is insufficient due to too little air content, the heating effect of the billet can be influenced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a billet smelting gas stepping heating furnace sectional heating mechanism which can provide sufficient air for combustion supporting when fuel is combusted, so that the fuel is more fully combusted, the fuel utilization rate is greatly improved, the fuel cost is saved, and the heating effect is improved.

In order to realize the purposes of enabling the fuel to be more sufficiently combusted in the heating process, improving the utilization rate of the fuel and enabling the workpiece to be more sufficiently heated and reducing the cost, the invention provides the following technical scheme: the utility model provides a billet steel smelting gas walking beam furnace segmentation heating mechanism, includes the support frame, its characterized in that: the top of the support frame is fixedly provided with a top beam, two sides of the support frame are fixedly provided with upright beams, the top of the top beam is fixedly provided with an air blowing cabin, the inside of the air blowing cabin is fixedly provided with an air blower, the bottom of the air blower is provided with a high air pressure cabin, the bottom of the high air pressure cabin is provided with an air guide pipe in a penetrating way, one side of the air guide pipe is provided with a combustion mechanism, one side of the top of the combustion mechanism is provided with a fuel conveying pipe, the bottom of the combustion mechanism is provided with a fire nozzle, the bottom of the combustion mechanism is fixedly provided with a furnace body, the inner cavity of the furnace body is provided with a workpiece, the bottom of the workpiece is provided with teeth, the bottom of the teeth is fixedly provided with a stepping furnace bottom, the stepping bottom of the furnace bottom is fixedly provided, the furnace body inner wall top fixed mounting has three group to press to encircle, three group press to encircle the equidistance and distribute, walking upper beam one end fixed mounting has the translation jar, walking underbeam bottom fixed mounting has the lift jar.

Preferably, the inner wall of the combustion mechanism is provided with a fire-resistant layer, the periphery of the fire-resistant layer is provided with an air distribution chamber, an air distribution hole is formed between the fire-resistant layer and the air distribution chamber, and the bottom of the inner chamber of the combustion mechanism is provided with a fire nozzle.

Preferably, the furnace body is provided with the steel structure layer in the inboard, the steel structure layer outside is provided with the heat preservation, the heat preservation outside is provided with the insulating layer.

Preferably, the air-blower and external power source electric connection, air-blowing cabin fixed mounting is at the carriage top, air-blowing cabin equidistance distributes, the quantity of air-blowing cabin is three groups, the guide duct runs through between high wind pressure cabin and furnace body inner wall, the guide duct symmetric distribution is in fuel delivery pipe both sides.

Preferably, the fuel supply device outside the fuel delivery pipe is fixedly connected, the combustion mechanism is fixedly installed at the top of the furnace body through bolts, and the combustion mechanism penetrates through the inner wall and the outer wall of the furnace body.

Preferably, the pressing arches are distributed on the top of the inner wall of the furnace body at equal intervals, the pressing arch top is provided with a hydraulic cylinder, the pressing arches stretch and move up and down through a piston rod of the hydraulic cylinder, and the pressing arches isolate the inner cavity of the furnace body into three parts.

Preferably, a roller is fixedly installed between the stepping upper beam and the stepping lower beam, a roller is fixedly installed at the bottom of the stepping lower beam, the lifting cylinder pushes the roller to move upwards along a slope, and the translation cylinder pushes the roller to move horizontally.

Preferably, be connected with the pipeline between combustion mechanism and the high wind pressure cabin, the distribution of wind chamber passes through the pipeline link up with the high wind pressure cabin, the combustion mechanism inner chamber does not communicate with each other with the high wind pressure cabin.

Compared with the prior art, the invention provides a sectional heating mechanism of a billet smelting gas walking beam furnace, which has the following beneficial effects:

1. this steel billet is smelted step-by-step heating furnace section heating mechanism of gas through the air-blower, can continuously be gone into to the furnace body inner chamber with outside air and be blasted in, for the inside combustion-supporting of providing sufficient air of furnace body, make the work piece heating more abundant.

2. This marching type heating furnace section heating mechanism of fuel is smelted to steel billet is through setting up the air distribution chamber in combustion mechanism inner chamber periphery, is provided with the air distribution hole between air distribution chamber and the bocca, and through the air distribution chamber to the bocca air blast when fuel is spout from the bocca for the fuel and the air mixing blowout of bocca make the fuel burning more thorough, have effectively improved fuel utilization ratio.

3. This steel billet is smelted fuel gas walking beam furnace segmentation heating mechanism sets up heat preservation and insulating layer through the steel structure layer outer strata inside the furnace body for the inside heat loss rate greatly reduced of furnace body has effectively reduced the inside heat of furnace body and has scattered and disappear, has improved energy utilization and has rateed.

4. The sectional heating mechanism of the billet-smelting gas walking beam furnace is provided with the pressing arch, the telescopic pressing arch is arranged at the top of the inner wall of the furnace body, and the heat convection among the three sections of the hearth is controlled through the pressing arch so as to ensure the temperature difference among the three sections of the hearth.

5. According to the sectional heating mechanism of the billet smelting gas stepping heating furnace, a workpiece is placed on the stepping furnace bottom, and the stepping furnace bottom is made of a refractory castable material with a small heat conductivity coefficient, so that the heat loss in a hearth can be reduced.

Drawings

FIG. 1 is a schematic side sectional view of the structure of the present invention;

FIG. 2 is a schematic front view of the structure of the present invention;

FIG. 3 is a schematic top view of the structure of the present invention;

FIG. 4 is a cross-sectional view of a structural combustion mechanism of the present invention;

FIG. 5 is an enlarged partial schematic view of FIG. 1 in accordance with the present invention;

FIG. 6 is a partial structural view of the present invention.

In the figure: 1. a support frame; 2. a top beam; 3. a column beam; 4. a blower compartment; 5. a blower; 6. a high wind pressure cabin; 7. an air guide pipe; 8. a combustion mechanism; 9. a fuel delivery pipe; 10. a flame port; 11. a furnace body; 12. a workpiece; 13. teeth; 14. the bottom of the stepping furnace; 15. stepping an upper beam; 16. stepping a lower beam; 17. a stepping guide rail; 18. a feed oven door; 19. a discharge furnace door; 20. pressing an arch; 21. a translation cylinder; 22. a lift cylinder; 81. a refractory layer; 82. a wind distribution cavity; 83. air distribution holes; 84. a flame port; 111. a steel structural layer; 112. a heat-insulating layer; 113. an insulating layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a sectional heating mechanism of a billet-smelting gas-fired walking beam furnace comprises a supporting frame 1, and is characterized in that: the top of the support frame 1 is fixedly provided with a top beam 2, two sides of the support frame 1 are fixedly provided with upright beams 3, the top of the top beam 2 is fixedly provided with an air blowing cabin 4, the inside of the air blowing cabin 4 is fixedly provided with an air blower 5, the bottom of the air blower 5 is provided with a high air pressure cabin 6, the bottom of the high air pressure cabin 6 is provided with an air guide pipe 7 in a penetrating way, one side of the air guide pipe 7 is provided with a combustion mechanism 8, one side of the top of the combustion mechanism 8 is provided with a fuel conveying pipe 9, the bottom of the combustion mechanism 8 is provided with a fire nozzle 10, the bottom of the combustion mechanism 8 is fixedly provided with a furnace body 11, the inner cavity of the furnace body 11 is provided with a workpiece 12, the bottom of the workpiece 12 is provided with teeth 13, the bottom of the teeth 13 is fixedly provided with a stepping furnace bottom, a feeding furnace door 18 and a discharging furnace door 19 are respectively and fixedly installed on two sides of the support frame 1, three groups of pressing arches 20 are fixedly installed on the top of the inner wall of the furnace body 11, the three groups of pressing arches 20 are distributed at equal intervals, a translation cylinder 21 is fixedly installed at one end of the stepping upper beam 15, and a lifting cylinder 22 is fixedly installed at the bottom of the stepping lower beam 16.

By arranging the blower 5, external air can be continuously blown into the inner cavity of the furnace body 11, so that sufficient air combustion is provided for the interior of the furnace body 11, and the workpiece 12 is heated more fully; the air distribution cavity 82 is arranged on the periphery of the inner cavity of the combustion mechanism 8, the air distribution holes 83 are arranged between the air distribution cavity 82 and the fire-jet ports 84, and air is blown into the fire-jet ports 84 through the air distribution cavity 82 when fuel is sprayed out of the fire-jet ports 84, so that the fuel and the air in the fire-jet ports 84 are mixed and sprayed out, the fuel is combusted more thoroughly, and the fuel utilization rate is effectively improved; the heat-insulating layer 112 and the heat-insulating layer 113 are arranged on the outer layer of the steel structure layer 111 in the furnace body 11, so that the heat loss rate in the furnace body 11 is greatly reduced, the heat loss in the furnace body 11 is effectively reduced, and the energy utilization rate is improved; by arranging the pressing arch 20, the telescopic pressing arch 20 is arranged at the top of the inner wall of the furnace body 11, and the heat convection among the three sections of the furnace hearth is controlled by the pressing arch 20 so as to ensure the temperature difference among the three sections of the furnace hearth; the workpiece 12 is placed on the stepping furnace bottom 14, and the stepping furnace bottom 14 is made of refractory castable with a small heat conductivity coefficient, so that heat loss in a hearth can be reduced.

In conclusion;

the inner wall of the combustion mechanism 8 is provided with a fire-resistant layer 81, the periphery of the fire-resistant layer 81 is provided with an air distribution chamber 82, an air distribution hole 83 is formed between the fire-resistant layer 81 and the air distribution chamber 82, the bottom of the inner chamber of the combustion mechanism 8 is provided with a fire jet 84, and air is blown into the combustion mechanism 8 through the inside of the air distribution chamber 82 and is mixed with fuel of the fire jet 84, so that fuel is combusted more fully, and the fuel utilization rate is improved.

The steel structure layer 111 is arranged on the innermost side of the furnace body 11, the heat preservation layer 112 is arranged on the outer side of the steel structure layer 111, the heat insulation layer 113 is arranged on the outer side of the heat preservation layer 112, the heat preservation layer 112 and the heat insulation layer 113 can effectively reduce the outward dissipation of heat inside the furnace body 11, and the energy utilization rate is improved.

The air blower 5 is electrically connected with an external power supply, the air blowing cabins 4 are fixedly arranged at the top of the support frame 1, the air blowing cabins 4 are distributed at equal intervals, the number of the air blowing cabins 4 is three, the air guide pipes 7 penetrate between the high air pressure cabin 6 and the inner wall of the furnace body 11, the air guide pipes 7 are symmetrically distributed on two sides of the fuel conveying pipe 9, hot air is continuously blown into the furnace body 11 through the air guide pipes 7, combustion-supporting air is provided for fuel combustion, and loss caused by insufficient burning of fuel is reduced; the external fuel supply device of the fuel delivery pipe 9 is fixedly connected, the combustion mechanism 8 is fixedly arranged at the top of the furnace body 11 through bolts, the combustion mechanism 8 penetrates through the inner wall and the outer wall of the furnace body 11, and the combustion mechanism 8 heats the surface of the workpiece 12 by delivering the fuel into the furnace body 11 for combustion; the pressing arches 20 are distributed on the top of the inner wall of the furnace body 11 at equal intervals, the hydraulic cylinder is arranged on the top of the pressing arch 20, the pressing arch 20 moves up and down through the extension of a piston rod of the hydraulic cylinder, the pressing arch 20 isolates the inner cavity of the furnace body 11 into three parts, and the heat convection among the three furnace sections is controlled so as to ensure the temperature difference among the three furnace sections; a roller is fixedly arranged between the upper stepping beam 15 and the lower stepping beam 16, the roller is fixedly arranged at the bottom of the lower stepping beam 16, the lifting cylinder 22 pushes the roller to move upwards along a slope, the translation cylinder 21 pushes the roller to move horizontally, and the lifting cylinder 22 is matched with the translation cylinder 21 to push the workpiece 12 to move forwards; the pipeline is connected between the combustion mechanism 8 and the high wind pressure cabin 6, the wind distribution chamber 82 is communicated with the high wind pressure cabin 6 through the pipeline, the inner chamber of the combustion mechanism 8 is not communicated with the high wind pressure cabin 6, and air is continuously infused into the wind distribution chamber 82 through the high wind pressure cabin 6.

When the furnace body is in operation, firstly, a workpiece 12 is conveyed to teeth 13 in a furnace body 11 through a conveying roller, fuel is conveyed to a flame jet 84 through a fuel conveying pipe 9 and is jetted out from a flame jet 10, flame is formed on the surface of the workpiece 12 in the furnace body 11, a blower 5 is arranged at the top of a combustion mechanism 8, the blower 5 continuously blows external hot air into a high-air-pressure cabin 6, an air guide pipe 7 penetrates between the high-air-pressure cabin 6 and the inner wall of the furnace body 11, the hot air enters the furnace body 11 through the air guide pipe 7 to improve the combustion effect, three sets of pressure arches 20 are arranged in the furnace body 11, a telescopic pressure arch 20 is arranged at the top of the inner wall of the furnace body 11, the heat convection between the three sections of the furnace chamber can be controlled through the pressure arch 20 to ensure the temperature difference between the three sections of the furnace chamber, a stepping furnace bottom 14 is arranged at, the lifting cylinder 22 cooperates with the forward transport of the work piece 12 by means of the translation cylinder 21.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a billet steel smelting gas walking beam furnace segmentation heating mechanism, includes support frame (1), its characterized in that: the top fixed mounting of support frame (1) has back timber (2), the both sides fixed mounting of support frame (1) has stand roof beam (3), the top fixed mounting of back timber (2) has air blast cabin (4), the inside fixed mounting of air blast cabin (4) has air-blower (5), the bottom of air-blower (5) is provided with high wind pressure cabin (6), the bottom of high wind pressure cabin (6) is run through and is provided with guide duct (7), guide duct (7) one side is provided with combustion mechanism (8), combustion mechanism (8) top one side is provided with fuel delivery pipe (9), the bottom of combustion mechanism (8) is provided with bocca (10), combustion mechanism (8) bottom fixed mounting has furnace body (11), furnace body (11) inner chamber is provided with work piece (12), work piece (12) bottom is provided with tooth (13), tooth (13) bottom fixed mounting has step furnace bottom (14), step furnace bottom (14) bottom fixed mounting has step upper beam (15), step upper beam (15) bottom fixed mounting has step underbeam (16), step underbeam (16) bottom fixed mounting has step guide (17), support frame (1) both sides respectively fixed mounting have feeding furnace gate (18) and ejection of compact furnace gate (19), furnace body (11) inner wall top fixed mounting has three group's pressure to encircle (20), three group's pressures encircle (20) equidistance and distribute, step upper beam (15) one end fixed mounting has translation jar (21), step underbeam (16) bottom fixed mounting has lift jar (22).

2. The sectional heating mechanism of the stepping heating furnace for billet steel smelting according to claim 1, characterized in that: the inner wall of the combustion mechanism (8) is provided with a fire-resistant layer (81), the periphery of the fire-resistant layer (81) is provided with an air distribution cavity (82), an air distribution hole (83) is formed between the fire-resistant layer (81) and the air distribution cavity (82), and the bottom of the inner cavity of the combustion mechanism (8) is provided with a fire nozzle (84).

3. The sectional heating mechanism of the stepping heating furnace for billet steel smelting according to claim 1, characterized in that: the furnace body (11) is provided with steel structural layer (111) in the innermost side, steel structural layer (111) outside is provided with heat preservation (112), heat preservation (112) outside is provided with insulating layer (113).

4. The sectional heating mechanism of the stepping heating furnace for billet steel smelting according to claim 1, characterized in that: air-blower (5) and external power source electric connection, air-blast cabin (4) fixed mounting is at support frame (1) top, air-blast cabin (4) equidistance distributes, the quantity in air-blast cabin (4) is three groups, between high wind pressure cabin (6) and furnace body (11) inner wall is run through in guide duct (7), guide duct (7) symmetric distribution is in fuel delivery pipe (9) both sides.

5. The sectional heating mechanism of the stepping heating furnace for billet steel smelting according to claim 1, characterized in that: the fuel delivery pipe (9) is fixedly connected with an external fuel supply device, the combustion mechanism (8) is fixedly installed at the top of the furnace body (11) through bolts, and the combustion mechanism (8) penetrates through the inner wall and the outer wall of the furnace body (11).

6. The sectional heating mechanism of the stepping heating furnace for billet steel smelting according to claim 1, characterized in that: the pressure arches (20) are equidistantly distributed on the top of the inner wall of the furnace body (11), the hydraulic cylinders are arranged on the tops of the pressure arches (20), the pressure arches (20) stretch and move up and down through piston rods of the hydraulic cylinders, and the pressure arches (20) isolate the inner cavity of the furnace body (11) into three parts.

7. The sectional heating mechanism of the stepping heating furnace for billet steel smelting according to claim 1, characterized in that: the stepping mechanism is characterized in that a roller is fixedly installed between the stepping upper beam (15) and the stepping lower beam (16), a roller is fixedly installed at the bottom of the stepping lower beam (16), the lifting cylinder (22) pushes the roller to move upwards along a slope, and the translation cylinder (21) pushes the roller to move horizontally.

8. The sectional heating mechanism of the stepping heating furnace for billet steel smelting according to claim 2, characterized in that: be connected with the pipeline between combustion mechanism (8) and high wind pressure cabin (6), air distribution chamber (82) are passed through the pipeline link up with high wind pressure cabin (6), combustion mechanism (8) inner chamber and high wind pressure cabin (6) do not communicate each other.