CN115597380A

CN115597380A - Furnace roof structure

Info

Publication number: CN115597380A
Application number: CN202211042739.XA
Authority: CN
Inventors: 霍李均; 吕张忠; 毛羲佳; 翟国平; 施卫
Original assignee: Jiangsu Botao Intelligent Thermal Engineering Co ltd
Current assignee: Jiangsu Botao Intelligent Thermal Engineering Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-01-13
Anticipated expiration: 2042-08-29
Also published as: CN115597380B

Abstract

The invention discloses a furnace top structure, which relates to the technical field of heating furnaces and comprises a furnace body top wall, wherein an annular mounting seat is fixedly arranged at the bottom end of the furnace body top wall, a connecting plate is fixedly arranged at the top end of the furnace body top wall, the top end of the connecting plate and the furnace body top wall are the same and provided with a through hole, a furnace cover is arranged in the through hole in a matched mode, the top end of the furnace cover is communicated with an exhaust pipe, a support structure is arranged at the top end of the connecting plate, and two sides of the top end of the support structure are respectively and oppositely provided with a pressing assembly. The heat preservation layer is a heat preservation cotton blanket, the heat preservation effect of the top wall of the furnace body can be improved by arranging the heat preservation layers in multiple layers, heat loss from the shell can be further reduced, gas generated after the gas is added into the furnace body can enter the dust falling pipe along the exhaust pipe, particle impurities can be concentrated in the collecting box under the action of gravity and collected in a concentrated mode, then gasification can continue to rise, pungent odor in the gas can be adsorbed through the arranged multiple layers of activated carbon bags, and pollution to the air is reduced.

Description

Furnace roof structure

Technical Field

The invention relates to the field of heating furnaces, in particular to a furnace top structure.

Background

The heating furnace is a special device for processing and heat treating product materials and produced workpieces. Unlike the drying equipment, the main purpose of the heating furnace is not to heat general materials, but to heat metal products at high temperature without oxidation or with little oxidation, so that the metal products can be further processed.

At present, the furnace top structure of a heating furnace in the prior art has the following patent numbers: CN202020903089.3, including the furnace roof structure, the furnace roof structure includes the inner shell, the heat absorption pipe, the insulating layer, shell and alumina filling layer, the inner shell bottom is equipped with heating furnace body, heating furnace body's top fixed connection inner shell bottom, the heat absorption pipe is helical structure, be equipped with flowing water in the heat absorption pipe, the heat absorption pipe is inserted on the surface of inner shell, shell detachably connects the inner shell, the shell is hollow structure, inner shell and heat absorption pipe all set up in the hollow structure of shell, there is the space between shell internal surface and the inner shell surface, insulating layer and alumina filling layer all set up in the space, shell internal surface fixed connection insulating layer, the alumina filling layer sets up with filling between insulating layer and the inner shell surface, the alumina filling layer is used for wrapping up the heat absorption pipe completely and covers, the technical problem who exists among the prior art has been solved, like: low heat conduction efficiency, unstable air pressure and inconvenient installation and maintenance.

However, the furnace top structure of the heating furnace still has certain defects in practical use, for example, the heat preservation effect of the furnace top is not good, heat dissipation is easily caused, the gas in the heating furnace is directly discharged, and the air is polluted due to the discharge of some particle impurities contained in the gas.

Disclosure of Invention

In order to overcome the defects of the prior art, the technical problem to be solved by the invention is to provide a furnace roof structure which can filter particulate impurities in exhaust gas.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a furnace top structure which comprises a furnace body top wall, wherein an annular mounting seat is fixedly arranged at the bottom end of the furnace body top wall, a connecting plate is fixedly arranged at the top end of the furnace body top wall, a through hole is formed in the top end of the connecting plate and the furnace body top wall, a furnace cover is arranged in the through hole in a matched mode, an exhaust pipe is communicated with the top end of the furnace cover, a support structure is arranged at the top end of the connecting plate, pressing assemblies for pressing the position of the furnace cover are respectively and oppositely arranged on two sides of the top end of the support structure, a filtering assembly is arranged between the two pressing assemblies in the connecting plate, and the filtering assembly is communicated with the exhaust pipe. The heat preservation is the cotton blanket that keeps warm, and through setting up the heat preservation multilayer, can improve the heat preservation effect of furnace body roof, and then can reduce the loss of heat from the shell, it is intraductal that the gas that produces after the furnace body interpolation can get into the dust fall along the blast pipe, granule impurity can concentrate under the action of gravity and collect in collecting the box, then gasification can continue to rise, through the multilayer activated carbon package that is equipped with, can adsorb the processing to the pungent smell in the gas, reduce the pollution to the air.

In a preferred technical scheme of the invention, the top wall of the furnace body comprises an outer shell and an inner shell, an alumina filling layer is arranged on the outer side of the inner shell, a heat conducting plate with a hollow inner part is arranged on the outer side of the alumina filling layer, a heat insulating layer is arranged on the outer side of the heat conducting plate, and one side of the heat insulating layer is attached to the outer shell. The alumina filling layer is powder or solid alumina filler, because alumina heat conduction efficiency is high to the inboard comprehensive contact of alumina and heat-conducting plate, so when the alumina filling layer temperature rose, can transmit heat to the surface of heat-conducting plate fast, then realize carrying out heat treatment to the inside cold water of heat-conducting plate, improve the utilization ratio of energy, reduce the waste of resource.

In a preferred technical scheme of the invention, the bottom end of the heat conducting plate is matched and arranged in a clamping groove formed in the mounting seat, the top of one side of the shell is communicated with the inside of the heat conducting plate and is provided with a water inlet pipe, the bottom of the other side of the shell is communicated with the heat conducting plate and is provided with a water outlet pipe, and one end of each of the water inlet pipe and the water outlet pipe is provided with a connecting flange. In arranging the draw-in groove in through the bottom with the heat-conducting plate, can make and constitute a filling channel between heat-conducting plate and the inner shell, conveniently fill the aluminium oxide filling layer, link to each other inlet tube and outside water pump, can go into outside cold water pump to the heat-conducting plate in, then discharge through the outlet pipe, can improve the utilization ratio of resource.

In a preferred technical scheme of the invention, the support structure comprises a fixed seat, the fixed seat is positioned right above the furnace cover, two sides of the fixed seat are respectively and oppositely provided with an inverted L-shaped supporting rod, the bottom of the supporting rod is sleeved with a fixed sleeve in a matching manner, the bottom of the fixed sleeve is fixedly connected with the connecting plate, and the supporting rod is fixedly connected with the fixed sleeve through a fastening bolt arranged on one side of the fixed sleeve. Fix branch and fixing sleeve through supporting tight bolt, conveniently dismantle branch and fixing base, and through the position of adjusting branch in fixing sleeve, can realize adjusting slightly the position height of fixing base.

In a preferred technical scheme of the invention, the pressing assembly comprises a fixed shell, the fixed shell is fixedly connected with the fixed seat, a movable plate is inserted into one side of the inside of the fixed shell in a sliding manner, the top end of the movable plate penetrates through the fixed shell and is arranged outside the fixed shell, a round pressing block is fixedly arranged at the bottom end of the movable plate, and the pressing block is matched and arranged in a pressing groove formed in the top end of the furnace cover. Promote the fly leaf downstream, the fly leaf removes to promote the briquetting downstream, cooperatees through briquetting and indent, can realize carrying on spacing compressing tightly to the bell.

In a preferred technical scheme of the invention, a rack is arranged on one side of the movable plate, a gear is arranged on one side of the rack in the fixed shell, a connecting shaft is fixedly arranged at the axis of the gear, two ends of the connecting shaft are rotatably connected with the fixed shell, and a servo motor for driving the connecting shaft is arranged outside the fixed shell. The servo motor works to drive the gear to rotate, the gear rotates to drive the rack meshed with the gear to move downwards, and the rack moves to drive the movable plate to move downwards.

In a preferred technical scheme of the invention, the filtering assembly comprises a filtering frame, a fixed plate is arranged at the top of the filtering frame, connecting screws are fixedly arranged on both sides of the middle part of the top end of the fixed plate, the filtering frame and the fixed plate are fixedly connected by the connecting screws through nuts matched with the outside, both ends of the fixed plate are respectively fixedly connected with the two movable plates, exhaust windows are arranged on both sides of the top end of the filtering frame, which are positioned on the fixed plate, and dust screens are arranged in the exhaust windows. Cooperate through connecting screw and nut, can realize carrying out fixed connection with filtering frame and fixed plate, through fixing fixed plate and two fly leafs, and then can realize being connected filtering frame and fly leaf.

In a preferred technical scheme of the invention, the bottom and the top of the inner cavity of the filter frame are respectively provided with a solid collecting component and a gas adsorbing component, the collecting component comprises a connecting channel, the connecting channel is arranged outside the exhaust pipe, the tops of two sides of the connecting channel are communicated with an inverted L-shaped dust-settling pipe, and two sides of the dust-settling pipe are positioned under the dust-settling pipe and provided with a collecting box. Through the collection box that is equipped with, can concentrate the collection to the intraductal granule impurity that receives gravity whereabouts of dust fall.

In a preferred technical scheme of the invention, the adsorption assembly comprises an adsorption frame, the adsorption frame is positioned at the top of the connecting channel, a fixing bolt for fixing the adsorption frame is arranged on the outer side of the filter frame, a slot is formed in one side of the adsorption frame, the adsorption frame is divided into a plurality of placing cavities through a grid plate arranged inside the adsorption frame, an activated carbon bag is placed in the placing cavities, and a baffle for limiting the activated carbon bag is rotatably arranged on the adsorption frame. Through the multilayer activated carbon package that is equipped with, can adsorb the pungent smell in the gas, will adsorb the frame through fixing bolt and fix with filtering the frame, conveniently carry out the dismouting to the absorption frame, and then conveniently change the activated carbon package.

The invention has the beneficial effects that:

according to the furnace top structure, the heat preservation layer is the heat preservation cotton blanket, the heat preservation effect of the top wall of the furnace body can be improved by arranging the heat preservation layers in multiple layers, heat dissipation from the shell can be further reduced, gas generated after the gas is added into the furnace body can enter the dust falling pipe along the exhaust pipe, particle impurities can be concentrated in the collection box under the action of gravity for concentrated collection, then gasification can continue to rise, and through the arranged multiple layers of activated carbon bags, pungent odor in the gas can be adsorbed, and pollution to the air is reduced.

The alumina filling layer is powder or solid alumina filler, because alumina heat conduction efficiency is high to the inboard comprehensive contact of alumina and heat-conducting plate, so when the alumina filling layer temperature rose, can transmit heat to the surface of heat-conducting plate fast, then realize carrying out heat treatment to the inside cold water of heat-conducting plate, improve the utilization ratio of energy, reduce the waste of resource.

The servo motor works to drive the gear to rotate, the gear can drive the rack meshed with the gear to move downwards, the rack can move to drive the movable plate to move downwards, the movable plate is pushed to move downwards, the movable plate moves to push the pressing block to move downwards, and the pressing block is matched with the pressing groove to realize limiting and pressing of the furnace cover.

Drawings

FIG. 1 is a schematic structural view of the connection between the top wall of the furnace body of the furnace top structure and the support structure;

FIG. 2 is a schematic structural view of the connection between the furnace cover of the furnace top structure and the top wall of the furnace body;

fig. 3 is a cross-sectional view of the top wall of a furnace body of a furnace roof structure according to the present invention;

fig. 4 is a schematic structural view of the positions of the support structure, the hold-down assembly and the filter assembly of a furnace roof structure according to the present invention;

fig. 5 is a schematic structural view of a support structure of a roof structure according to the present invention;

fig. 6 is a schematic structural view of a pressing assembly of a furnace roof structure according to the present invention;

fig. 7 is a schematic structural diagram of the interior of a filter frame of a furnace roof structure according to the present invention;

fig. 8 is a schematic structural diagram of an adsorption frame of a furnace roof structure provided by the invention.

In the figure:

1-furnace body top wall; 101-a housing; 102-an inner shell; 103-alumina filling layer; 104-a thermally conductive plate; 105-an insulating layer; 106-card slot; 107-water inlet pipe; 108-water outlet pipe; 109-a connecting flange; 2-mounting a base; 3-connecting the plates; 4-a through hole; 5-furnace cover; 6-a scaffold structure; 601-a fixed seat; 602-a strut; 603-fixing the sleeve; 604-tightening the bolt; 7-a hold-down assembly; 701-a stationary shell; 702-a movable plate; 703-briquetting; 704-a rack; 705-gear; 706-a connecting shaft; 707-a servo motor; 8-a filter assembly; 801-a filter frame; 802-fixed plate; 803-connecting the screw; 804-a nut; 805-an exhaust window; 806-dust screen; 807-a collection assembly; 8071-connecting the channels; 8072-dust settling tube; 8073-a collection box; 808-an adsorption component; 8081-an adsorption frame; 8082-anchor bolts; 8083 grooving; 8084-a grid plate; 8085 wrapping with activated carbon; 8086-a placement chamber; 8087-baffle plate; 9-pressing a groove; 10-exhaust pipe.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1-8, in the embodiment, a furnace top structure is provided, which includes a furnace body top wall 1, a mounting seat 2 in an annular shape is fixedly arranged at the bottom end of the furnace body top wall 1, a connecting plate 3 is fixedly arranged at the top end of the furnace body top wall 1, a through hole 4 is formed in the top end of the connecting plate 3, a furnace cover 5 is cooperatively arranged in the through hole 4, an exhaust pipe 10 is communicated with the top end of the furnace cover 5, a support structure 6 is arranged at the top end of the connecting plate 3, pressing assemblies 7 for pressing the position of the furnace cover 5 are respectively and oppositely arranged at two sides of the top end of the support structure 6, a filter assembly 8 is arranged between the two pressing assemblies 7 in the connecting plate 3, and the filter assembly 8 is communicated with the exhaust pipe 10.

Referring to fig. 1-8, the furnace body top wall 1 comprises an outer shell 101 and an inner shell 102, an alumina filling layer 103 is arranged on the outer side of the inner shell 102, a heat conducting plate 104 with a hollow inner part is arranged on the outer side of the alumina filling layer 103, a heat insulating layer 105 is arranged on the outer side of the heat conducting plate 104, one side of the heat insulating layer 105 is attached to the outer shell 101, the alumina filling layer 103 is powder or solid alumina filler, and since the alumina has high heat conduction efficiency and is in full contact with the inner side of the heat conducting plate 104, heat can be rapidly transferred to the surface of the heat conducting plate 104 while the temperature of the alumina filling layer 103 is increased, and then cold water in the heat conducting plate 104 is heated, so that the utilization rate of energy is improved, and the waste of resources is reduced; the bottom end of the heat conducting plate 104 is matched and arranged in a clamping groove 106 formed in the mounting base 2, the top of one side of the outer shell 101 is communicated with the inside of the heat conducting plate 104 and is provided with a water inlet pipe 107, the bottom of the other side of the outer shell 101 is communicated with the heat conducting plate 104 and is provided with a water outlet pipe 108, one end of each of the water inlet pipe 107 and the water outlet pipe 108 is provided with a connecting flange 109, a filling channel can be formed between the heat conducting plate 104 and the inner shell 102 by arranging the bottom end of the heat conducting plate 104 in the clamping groove 106, the aluminum oxide filling layer 103 can be conveniently filled, the water inlet pipe 107 is connected with an external water pump, external cold water can be pumped into the heat conducting plate 104 and then is discharged through the water outlet pipe 108, and the utilization rate of resources can be improved; the support structure 6 comprises a fixed seat 601, the fixed seat 601 is positioned right above the furnace cover 5, two sides of the fixed seat 601 are respectively and oppositely provided with an inverted L-shaped supporting rod 602, the bottom of the supporting rod 602 is sleeved with a fixed sleeve 603 in a matching manner, the bottom end of the fixed sleeve 603 is fixedly connected with the connecting plate 3, the supporting rod 602 is fixedly connected with the fixed sleeve 603 through a fastening bolt 604 arranged on one side of the fixed sleeve 603, the supporting rod 602 and the fixed sleeve 603 are fixed through the fastening bolt 604, the supporting rod 602 and the fixed seat 601 are convenient to detach, and the position height of the fixed seat 601 can be slightly adjusted by adjusting the position of the supporting rod 602 in the fixed sleeve 603; the pressing component 7 comprises a fixed shell 701, the fixed shell 701 is fixedly connected with a fixed seat 601, a movable plate 702 is inserted into one side of the inside of the fixed shell 701 in a sliding mode, the top end of the movable plate 702 penetrates through the fixed shell 701 and is arranged outside the fixed shell 701, a round pressing block 703 is fixedly arranged at the bottom end of the movable plate 702, the pressing block 703 is matched and arranged in a pressing groove 9 formed in the top end of the furnace cover 5, the movable plate 702 is pushed to move downwards, the movable plate 702 moves to push the pressing block 703 to move downwards, and the pressing block 703 is matched with the pressing groove 9, so that the furnace cover 5 can be limited and pressed; one side of the movable plate 702 is provided with a rack 704, one side of the fixed shell 701, which is located at the rack 704, is provided with a gear 705, the axis of the gear 705 is fixedly provided with a connecting shaft 706, two ends of the connecting shaft 706 are rotatably connected with the fixed shell 701, a servo motor 707 for driving the connecting shaft 706 is arranged outside the fixed shell 701, the servo motor 707 drives the gear 705 to rotate when working, the gear 705 rotates to drive the rack 704 engaged with the gear to move downwards, and the rack 704 moves to drive the movable plate 702 to move downwards.

Referring to fig. 1 to 8, the filter assembly 8 includes a filter frame 801, a fixing plate 802 is disposed on the top of the filter frame 801, connecting screws 803 are fixedly disposed on both sides of the middle portion of the top end of the fixing plate 802, the connecting screws 803 fixedly connect the filter frame 801 with the fixing plate 802 through nuts 804 disposed in an external fitting manner, both ends of the fixing plate 802 are respectively fixedly connected with the two movable plates 702, exhaust windows 805 are disposed on both sides of the top end of the filter frame 801 located on the fixing plate 802, dust screens 806 are disposed in the exhaust windows 805, the filter frame 801 and the fixing plate 802 can be fixedly connected by matching the connecting screws 803 with the nuts 804, and the filter frame 801 and the movable plates 702 can be connected by fixing the fixing plate 802 with the two movable plates 702; a solid collecting component 807 and a gas adsorbing component 808 are respectively arranged at the bottom and the top of an inner cavity of the filter frame 801, the collecting component 807 comprises a connecting channel 8071, the connecting channel 8071 is arranged outside the exhaust pipe 10, the tops of two sides of the connecting channel 8071 are communicated and provided with an inverted-L-shaped dust falling pipe 8072, two sides of the dust falling pipe 8072 are provided with a collecting box 8073 right below the dust falling pipe 8072, and particle impurities falling under gravity in the dust falling pipe 8072 can be collected in a centralized manner through the arranged collecting box 8073; the adsorption component 808 comprises an adsorption frame 8081, the adsorption frame 8081 is located at the top of the connecting channel 8071, the outer side of the filter frame 801 is provided with a fixing bolt 8082 for fixing the adsorption frame 8081, one side of the adsorption frame 8081 is provided with a slot 8083, the adsorption frame 8081 is divided into a plurality of placing cavities 8086 through a grid plate 8084 arranged inside, an activated carbon bag 8085 is placed in the placing cavity 8086, a baffle 8087 for limiting the activated carbon bag 8085 is rotatably arranged on the adsorption frame 8081, and the multiple layers of activated carbon bags 8085 are arranged to adsorb pungent smell in gas, the adsorption frame 8081 and the filter frame 801 are fixed through the fixing bolt 8082, so that the adsorption frame 8081 is conveniently disassembled and assembled and disassembled, and then the activated carbon bag 8085 is conveniently replaced.

Heat preservation 105 is the cotton blanket that keeps warm, and through setting up heat preservation 105 the multilayer, can improve the heat preservation effect of furnace body roof 1, and then can reduce the loss of heat from shell 101, the gas that produces after adding in the furnace body can get into dust fall pipe 8072 along blast pipe 10 in, particulate impurity can concentrate under the action of gravity and collect in collecting box 8073, then the gasification can continue to rise, through the multilayer activated carbon package 8085 that is equipped with, can adsorb the processing to the pungent smell in the gas, reduce the pollution to the air.

Other techniques of the present embodiment employ existing techniques.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. The utility model provides a furnace roof structure, includes furnace body roof (1), its characterized in that, the bottom mounting of furnace body roof (1) is provided with and is annular mount pad (2), the top of furnace body roof (1) is fixed and is provided with connecting plate (3), through-hole (4) have been seted up the same with furnace body roof (1) on the top of connecting plate (3), the cooperation is provided with bell (5) in through-hole (4), the top of bell (5) is linked together and is provided with blast pipe (10), the top of connecting plate (3) is provided with supporting structure (6), the both sides on supporting structure (6) top are provided with respectively relatively compresses tightly subassembly (7) that compress tightly the position of bell (5), it is provided with between subassembly (7) to be located two in connecting plate (3) and compresses tightly subassembly (8), filtering subassembly (8) are linked together with blast pipe (10).

2. The furnace roof structure according to claim 1, characterized in that the furnace body top wall (1) comprises an outer shell (101) and an inner shell (102), an alumina filling layer (103) is arranged on the outer side of the inner shell (102), a heat conducting plate (104) with a hollow inner part is arranged on the outer side of the alumina filling layer (103), an insulating layer (105) is arranged on the outer side of the heat conducting plate (104), and one side of the insulating layer (105) is attached to the outer shell (101).

3. The furnace roof structure according to claim 2, wherein the bottom end of the heat-conducting plate (104) is arranged in a clamping groove (106) formed in the mounting base (2) in a matching manner, the top of one side of the shell (101) is communicated with the inside of the heat-conducting plate (104) to form a water inlet pipe (107), the bottom of the other side of the shell (101) is communicated with the heat-conducting plate (104) to form a water outlet pipe (108), and one end of each of the water inlet pipe (107) and the water outlet pipe (108) is provided with a connecting flange (109).

4. The furnace roof structure according to claim 1, wherein the support structure (6) comprises a fixing base (601), the fixing base (601) is located right above the furnace cover (5), two sides of the fixing base (601) are respectively and oppositely provided with an inverted-L-shaped supporting rod (602), the bottom of the supporting rod (602) is sleeved with a fixing sleeve (603) in a matching manner, the bottom end of the fixing sleeve (603) is fixedly connected with the connecting plate (3), and the supporting rod (602) is fixedly connected with the fixing sleeve (603) through a tightening bolt (604) arranged on one side of the fixing sleeve (603).

5. The furnace roof structure according to claim 4, wherein the pressing component (7) comprises a fixed shell (701), the fixed shell (701) is fixedly connected with the fixed seat (601), a movable plate (702) is slidably inserted into one side of the inside of the fixed shell (701), the top end of the movable plate (702) penetrates through the fixed shell (701) and is arranged outside the fixed shell (701), a circular pressing block (703) is fixedly arranged at the bottom end of the movable plate (702), and the pressing block (703) is matched and arranged in a pressing groove (9) formed in the top end of the furnace cover (5).

6. The roof structure according to claim 5, characterised in that one side of the movable plate (702) is provided with a rack (704), one side of the rack (704) in the stationary shell (701) is provided with a gear (705), the axis of the gear (705) is fixedly provided with a connecting shaft (706), both ends of the connecting shaft (706) are rotatably connected with the stationary shell (701), and the outside of the stationary shell (701) is provided with a servo motor (707) driving the connecting shaft (706).

7. The furnace roof structure according to claim 5, wherein the filter assembly (8) comprises a filter frame (801), a fixing plate (802) is arranged at the top of the filter frame (801), connecting screws (803) are fixedly arranged on both sides of the middle portion of the top end of the fixing plate (802), the connecting screws (803) fixedly connect the filter frame (801) and the fixing plate (802) through nuts (804) which are externally matched and arranged, both ends of the fixing plate (802) are fixedly connected with the two movable plates (702) respectively, exhaust windows (805) are arranged on both sides of the top end of the filter frame (801) located on the fixing plate (802), and dust screens (806) are arranged in the exhaust windows (805).

8. The furnace roof structure according to claim 7, wherein the bottom and the top of the cavity of the filter frame (801) are respectively provided with a solid collecting component (807) and a gas adsorbing component (808), the collecting component (807) comprises a connecting channel (8071), the connecting channel (8071) is arranged outside the exhaust pipe (10), the tops of two sides of the connecting channel (8071) are communicated with a dust falling pipe (8072) in an inverted L shape, and two sides of the dust falling pipe (8072) are positioned right below the dust falling pipe (8072) and are provided with a collecting box (8073).

9. The furnace roof structure according to claim 8, wherein the adsorption component (808) comprises an adsorption frame (8081), the adsorption frame (8081) is located at the top of the connecting channel (8071), a fixing bolt (8082) for fixing the adsorption frame (8081) is arranged on the outer side of the filter frame (801), one side of the adsorption frame (8081) is provided with a slot (8083), the adsorption frame (8081) is divided into a plurality of placing cavities (8086) by a grid plate (8084) arranged inside, an activated carbon bag (8085) is placed in the placing cavity (8086), and a baffle (8087) for limiting the activated carbon bag (8085) is rotatably arranged on the adsorption frame (8081).