CN214283006U - Baking oven - Google Patents

Abstract

The utility model discloses a baking oven, which comprises a combustion furnace, a baking room and a smoke dust treatment device; the combustion furnace comprises a combustion chamber, a hot air chamber and a discharge flue; the upper part of the combustion cavity is provided with a smoke outlet; the front end of the hot air cavity is connected and isolated with the combustion cavity; the front end and the rear end of the hot air cavity are respectively provided with an air supplementing opening and an air outlet; the smoke exhaust channel comprises a first steering cavity, a second steering cavity, a third steering cavity, a fourth steering cavity and a smoke pipe group; the head end of the baking room is provided with an air inlet, and the tail end of the baking room is provided with an air outlet; the smoke dust treatment device comprises a storage tank, a spraying system and a filter; the spraying system comprises a spraying pipe, a water pump and a water pipe, and the spraying pipe is provided with uniformly arranged water spraying ports; the spraying pipe is communicated with a water source through a water pump and a water pipe; the filter comprises a rotating shaft, a driven roller, a filter screen and a motor.

Description

Baking oven

Technical Field

The utility model relates to a food processing equipment especially relates to a bake out furnace.

Background

The combustible domestic garbage is treated by adopting unified collection, treatment and incineration, so that the garbage treatment cost is high, and the heat energy generated by the incineration of the combustible domestic garbage cannot be utilized.

At present, a baking oven used for producing dry food generally adopts biomass fuel, coal and electric energy, and the structural characteristics determine that the baking oven cannot use combustible domestic garbage as fuel, so that fuel resources are wasted, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a baking oven which is convenient to use and can adopt combustible domestic garbage as fuel.

In order to solve the technical problem, the utility model discloses a baking oven, which comprises a combustion furnace, a baking room and a smoke dust treatment device; the combustion furnace comprises a combustion chamber, a hot air chamber and a discharge flue; the combustion chamber is provided with a fuel inlet; a furnace bridge is arranged below the combustion chamber, and an ash accumulation chamber is arranged at the bottom of the furnace bridge; the upper part of the combustion cavity is provided with a smoke outlet; the front end of the hot air cavity is connected and isolated with the combustion cavity; the front end and the rear end of the hot air cavity are respectively provided with an air supplementing opening and an air outlet; the smoke exhaust channel comprises a first steering cavity, a second steering cavity, a third steering cavity, a fourth steering cavity and a smoke pipe group; the first steering cavity and the third steering cavity are sequentially arranged at the top of the hot air cavity and are isolated from the hot air cavity; the first steering cavity is communicated with a smoke outlet at the upper part of the combustion cavity through a control valve; the second steering cavity and the fourth steering cavity are sequentially arranged at the bottom of the hot air cavity and are isolated from the hot air cavity; the fourth steering cavity is provided with a smoke outlet; the smoke pipe group consists of smoke pipes which are vertically and uniformly arranged in the hot air cavity, and two ends of the smoke pipes respectively extend out of the hot air cavity; the smoke pipe group comprises a smoke pipe group, a smoke pipe group and a smoke pipe group; two ends of the smoke tubes of the smoke tube group are respectively arranged in the first steering cavity and the second steering cavity; two ends of the smoke pipes of the smoke pipe group are respectively arranged in the second steering cavity and the third steering cavity; two ends of the smoke pipes of the three groups of smoke pipes are respectively arranged in a third steering cavity and a fourth steering cavity, so that smoke and heat energy of the combustion cavity sequentially enter the one group of smoke pipes, the second steering cavity, the two groups of smoke pipes, the third steering cavity, the three groups of smoke pipes and the fourth steering cavity along the first steering cavity; the head end of the baking room is provided with an air inlet, and the tail end of the baking room is provided with an air outlet; an air inlet at the head end of the baking room is communicated with an air outlet at the rear end of the hot air cavity through a hot air pipe and a draught fan; the smoke dust treatment device comprises a storage tank, a spraying system and a filter, wherein a smoke dust inlet is formed in the upper part of the head end of the storage tank, and is communicated with a smoke outlet formed in the fourth steering cavity through a pipeline and a draught fan; the top of the head end of the saving pool is provided with a cover plate and is sealed by the cover plate; the top of the tail end of the storage tank is open, and the bottom of the tail end of the storage tank is provided with a slag discharge pipe and is controlled by a valve; the spraying system comprises a spraying pipe, a water pump and a water pipe, wherein the spraying pipe is provided with uniformly arranged water spraying ports, and nozzles are fixed on the water spraying ports; the spraying pipes are uniformly arranged and fixed below the top cover plate at the head end of the storage tank to form a spraying pipe network; the spraying pipe is communicated with a water source through a water pump and a water pipe; the filter comprises a rotating shaft, a driven roller, a filter screen and a motor, wherein the rotating shaft is in transmission connection with the motor and is fixed below a head end cover plate and in front of a tail end opening of the storage pool through a bearing seat; the driven roller is fixed at the bottom of the storage pool through a bearing seat corresponding to the rotating shaft; the filter screen is arranged between the open opening at the head end and the open opening at the tail end of the storage pool and isolates the open opening at the head end and the open opening at the tail end of the storage pool, two ends of the filter screen are fixedly connected and sleeved on the rotating shaft and the driven roller, and the motor drives the rotating shaft to enable the filter screen to rotate along the rotating shaft and the driven roller.

The fuel inlet is provided with a spiral feeding device.

The tops of the first steering cavity and the third steering cavity are detachably sealed through sealing plates.

The dust removing device comprises a dust removing rod and a scraper; the length of the ash removal rod is greater than that of the smoke tube, and the tail end of the ash removal rod is provided with a handle; the shape of the scraper is matched with the shape of the cross section of the smoke tube, and the scraper is fixed at the head end of the ash removal rod, so that the scraper can be arranged in the smoke tube to scrape the inner wall of the smoke tube through the ash removal rod.

The device also comprises a wind swinging device; the air swinging device comprises a fixed frame, an air swinging plate, a crank, an air swinging rod, a crank shaft and a motor; the fixed frame is fixedly connected with the air inlet wall at the head end of the baking room; the fixed shafts at the two ends of the air swinging plate are respectively connected with the two sides of the fixed frame through bearings; the crank is arranged on one side of the fixed frame, one end of the crank is fixedly connected with the fixed shaft of the wind swinging plate, and the other end of the crank is fixedly connected with the wind swinging rod; the air swing rod is vertical to the horizontal plane; one end of the crankshaft is fixedly connected with the air swinging rod, and the other end of the crankshaft is in transmission connection with the motor through the gearbox, so that the crankshaft enables the air swinging rod to move to link with the air swinging plate to rotate through the transmission of the motor.

The terminal air exit of bakery is equipped with the exhaust pipe, the entry and the air exit intercommunication of exhaust pipe, export pass through control flap respectively with the bakery outside, the air supplement mouth intercommunication of hot-blast chamber front end.

The side wall of the combustion cavity is also provided with an opening; the opening can be opened and closed by a sealing door.

The smoke dust treatment device also comprises a collecting scraper and a guide chute, wherein the collecting scraper is arranged on one side of the upper part of the filter screen adjacent to the open port at the tail end of the storage pool, and the top end of the collecting scraper is provided with an inclined port which is in contact connection with the upper part of the filter screen; the angle between the collecting scraper and the horizontal plane is 30-60 degrees; the guiding chute is arranged at the bottom end of the collecting scraper and extends out of one side of the storage pool, so that substances collected by the collecting scraper slide down along the collecting scraper into the guiding chute and are conveyed to one side of the storage pool by the guiding chute.

By adopting the structure of the utility model, the flue gas treatment device comprises a combustion furnace, a baking room and a smoke dust treatment device, and the upper part of the combustion cavity is provided with a smoke outlet; the front end of the hot air cavity is connected and isolated with the combustion cavity; the front end and the rear end of the hot air cavity are respectively provided with an air supplementing opening and an air outlet; the smoke exhaust channel comprises a first steering cavity, a second steering cavity, a third steering cavity, a fourth steering cavity and a smoke pipe group; the first steering cavity and the third steering cavity are sequentially arranged at the top of the hot air cavity and are isolated from the hot air cavity; the first steering cavity is communicated with a smoke outlet at the upper part of the combustion cavity through a control valve; the second steering cavity and the fourth steering cavity are sequentially arranged at the bottom of the hot air cavity and are isolated from the hot air cavity; the fourth steering cavity is provided with a smoke outlet; the smoke pipe group consists of smoke pipes which are vertically and uniformly arranged in the hot air cavity, and two ends of the smoke pipes respectively extend out of the hot air cavity; the smoke pipe group comprises a smoke pipe group, a smoke pipe group and a smoke pipe group; two ends of the smoke tubes of the smoke tube group are respectively arranged in the first steering cavity and the second steering cavity; two ends of the smoke pipes of the smoke pipe group are respectively arranged in the second steering cavity and the third steering cavity; the third turns to the chamber respectively in the tobacco pipe both ends of tobacco pipe three groups, the fourth turns to the intracavity, make the flue gas and the heat energy in burning chamber get into the tobacco pipe along first turning to the chamber in proper order a set of, the second turns to the chamber, the tobacco pipe is two groups, the third turns to the chamber, tobacco pipe three groups, the fourth turns to the intracavity, during the use, the steam in hot-blast chamber passes through the hot-blast main, the draught fan gets into the bakery and dries the system food, the flue gas in burning chamber gets into a set of tobacco pipe in proper order along first turning to the chamber, the second turns to the chamber, the tobacco pipe is two groups, the third turns to the chamber, tobacco pipe three groups, the fourth turns to the chamber and discharges through the draught fan. Secondly, because the discharge flue includes first turn to the chamber, the second turns to chamber, third and turns to chamber, fourth and turn to chamber and flue nest of tubes, prolonged the flue gas and got into the route in the flue, the organic matter gasification time in the flue gas is sufficient, and the heat production is efficient, and it is more convenient to use. Thirdly, owing to be equipped with the pendulum wind device in the bakery, the hot-blast more even of each position in the bakery, by the more even quilt of drying material or food promptly, it is better to dry out material or food quality, and the quality is higher, and it is more convenient to use. Because the smoke and dust processing apparatus includes save pool, spraying system and filter, the flue gas of burning chamber gets into the save pool after, the water atomization flue gas that spraying system erupted, organic matter in the flue gas and the harmful gas who dissolves in water are saved in the save pool, have purified the flue gas. The flue gas after the purification of spraying system passes through the filter and filters once more, and the flue gas purifies once more, accords with the environmental protection emission requirement, can adopt combustible domestic waste as the fuel, and domestic waste has obtained make full use of, has reduced domestic waste treatment cost, has practiced thrift the resource, convenient to use.

Because the tops of the first steering cavity and the third steering cavity are detachably sealed through the sealing plates respectively, the smoke discharge flue is simpler and more convenient to clean.

The dust remover comprises a dust removing rod and a scraper; the length of the ash removal rod is greater than that of the smoke tube, and the tail end of the ash removal rod is provided with a handle; the shape of scraper blade and the shape of tobacco pipe cross section suit, and this scraper blade is fixed in deashing pole head end to make can send the scraper blade into the tobacco pipe through the deashing pole and scrape the tobacco pipe inner wall, during the use, arrange the scraper blade in the tobacco pipe and promote the deashing pole, the dust or the carbon deposit of scraping the tobacco pipe inner wall are scraped to the scraper blade border, and the operation is simpler, and it is more convenient to use.

The wind swinging device comprises a fixed frame, a wind swinging plate, a crank, a wind swinging rod, a crank shaft and a motor; the fixed frame is fixedly connected with the air inlet wall at the head end of the baking room; the fixed shafts at the two ends of the air swinging plate are respectively connected with the two sides of the fixed frame through bearings; the crank is arranged on one side of the fixed frame, one end of the crank is fixedly connected with the fixed shaft of the wind swinging plate, and the other end of the crank is fixedly connected with the wind swinging rod; the air swing rod is vertical to the horizontal plane; bent axle one end is connected with pendulum wind pole fixed connection, the other end passes through the gearbox and is connected with motor drive for the bent axle passes through motor drive and enables pendulum wind pole motion linkage pendulum aerofoil to rotate, and the hot-blast of each position is more even in the bakery, is dried by the more even quilt of stoving material or food promptly, and it is better to dry out material or food quality, and the quality is higher, and it is more convenient to use.

Because the terminal air exit of bakery is equipped with the exhaust pipe, the entry and the air exit intercommunication of exhaust pipe, export pass through control flap respectively with the bakery outside, the mend wind gap intercommunication of hot-blast chamber front end, when using, can be selective with the bakery hot-blast introduction hot-blast chamber form the circulation, heat utilization rate is high, has practiced thrift fuel resource, and it is more convenient to use.

The side wall of the combustion cavity is also provided with an opening; this opening can be opened through sealing door and seal to the messenger can be better adapted to the cubic refuse fuel of flammability, like cubic wood, plank etc. and accommodation is wider, and it is more convenient to use.

The smoke dust treatment device also comprises a collecting scraper and a guide chute, wherein the collecting scraper is arranged on one side of the upper part of the filter screen adjacent to the open port at the tail end of the storage pool, and the top end of the collecting scraper is provided with an inclined port which is in contact connection with the upper part of the filter screen; the angle between the collecting scraper and the horizontal plane is 30-60 degrees; the guiding chute is arranged at the bottom end of the collecting scraper and extends out of one side of the storage pool, so that substances collected by the collecting scraper slide down along the collecting scraper into the guiding chute and are conveyed to one side of the storage pool by the guiding chute. In the use, organic matter in the flue gas can form the floater after the water atomization that spraying system blowout comes and float on the surface of water of saving pond, the filter screen is along the pivot, when the driven voller rotates, the floater that forms after the atomizing adheres to the filter screen and takes away along with the filter screen, receipts scraper blade top bevel connection scrapes the floater on filter screen surface down, the floater slides down along receiving the scraper blade and gets into the direction chute, collect by one side of direction chute drainage to saving pond, collect the organic matter easy operation in the flue gas, high durability and convenient use. Secondly, when collecting the floater of scraper blade scraping filter screen collection, cleaned the clearance simultaneously to the filter screen, got into the savings pool bottom when the filter screen motion, water in the savings pool washs the filter screen, guarantees that the filter screen normally works, need not to clear up alone, wash the filter screen, and it is more convenient to use, operates simplyr.

Drawings

FIG. 1 is a schematic structural view of a biomass combustion furnace of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic structural view of the baking room of the present invention;

fig. 4 is a schematic structural view of the air swinging device of the present invention;

FIG. 5 is a schematic view of the structure of FIG. 4 taken along line B-B;

FIG. 6 is a schematic structural view of the ash removal device of the present invention;

FIG. 7 is a top view of FIG. 6;

FIG. 8 is a schematic structural view of the smoke dust treatment device of the present invention;

fig. 9 is a right side view of fig. 8.

Detailed Description

The invention is described in detail below with reference to the following drawings and embodiments:

as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, the baking oven of the present invention includes a combustion furnace, a baking chamber 19 and a smoke processing device; the combustion furnace comprises a combustion chamber 14, a hot air chamber 11 and a discharge flue. The combustion chamber 14 is provided with a fuel inlet 15. The fuel inlet 15 is preferably a currently used screw feeder. A furnace bridge 13 is arranged below the combustion chamber 14, and an ash accumulation chamber is arranged at the bottom of the furnace bridge 13. The upper part of the combustion chamber 14 is provided with a smoke outlet 1. The front end of the hot air cavity 11 is connected and isolated with the combustion cavity 14; the front end and the rear end of the hot air cavity 11 are respectively provided with an air supply port 19 and an air outlet. The discharge flue comprises a first steering cavity 2, a second steering cavity 12, a third steering cavity 3, a fourth steering cavity 10 and a smoke tube group. The first turning cavity 2 and the third turning cavity 3 are sequentially arranged at the top of the hot air cavity 11 and are isolated from the hot air cavity 11. The first steering cavity 2 is communicated with the smoke exhaust port 1 at the upper part of the combustion cavity 14 through a control valve. The second turning cavity 12 and the fourth turning cavity 10 are sequentially arranged at the bottom of the hot air cavity 11 and are isolated from the hot air cavity 11. The fourth turning chamber 10 is provided with a smoke outlet 8. The smoke pipe group is composed of smoke pipes 4, the smoke pipes 4 are vertically and uniformly arranged in the hot air cavity 11, and two ends of each smoke pipe respectively extend out of the hot air cavity 11. The smoke tube set comprises a smoke tube set, a smoke tube set and a smoke tube set. Two ends of a group of smoke pipes 4 are respectively arranged in the first steering cavity 2 and the second steering cavity 12. Two ends of the smoke pipes of the smoke pipe group are respectively arranged in the second steering cavity 12 and the third steering cavity 3. Two ends of the smoke pipes 4 of the three groups of smoke pipes are respectively arranged in the third steering cavity 3 and the fourth steering cavity 10, so that smoke and heat energy of the combustion cavity 14 sequentially enter the one group of smoke pipes, the second steering cavity 12, the two groups of smoke pipes, the third steering cavity 3, the three groups of smoke pipes and the fourth steering cavity 10 along the first steering cavity 2. The smoke vent can be provided with a fifth steering cavity 5 and a sixth steering cavity 9 as required to increase the length of the smoke vent, namely, the residence time of smoke in the smoke vent is increased for better gasification of the smoke. The head end of the baking room 19 is provided with an air inlet 20, and the tail end is provided with an air outlet 22. An air inlet 20 at the head end of the baking room 19 is communicated with an air outlet at the rear end of the hot air cavity 11 through a hot air pipe 7 and a draught fan. The soot treatment device comprises a reservoir 39, a spraying system and a filter. The upper part of the head end of the storage tank 39 is provided with a smoke inlet 40, and the smoke inlet 40 is communicated with the smoke outlet 8 of the fourth steering cavity 10 through a pipeline and an induced draft fan. The top of the head end of the storage pool 39 is provided with a cover plate and is sealed by the cover plate. The top of the tail end of the storage tank 39 is open, and the bottom of the tail end of the storage tank is provided with a slag discharge pipe 36 and is controlled by a valve. The sprinkler system includes a sprinkler pipe 31, a water pump 32 and a water pipe. The shower pipe 31 is provided with water jet ports arranged uniformly, and the water jet ports are fixed with nozzles 30. The spray pipes 31 are uniformly arranged and fixed below the top cover plate at the head end of the storage tank 39 to form a spray pipe network. The spray pipe is communicated with a water source through a water pump 32 and a water pipe. The filter includes a rotating shaft 33, a driven roller 37, a strainer 38, and a motor. The rotating shaft 33 is in transmission connection with the motor and is fixed below the head end cover plate of the storage tank 39 and in front of the tail end opening through a bearing seat. The driven roller 37 is fixed to the bottom of the reservoir 39 by a bearing block corresponding to the rotating shaft 33. The screen 38 is disposed between the open ends of the reservoirs 39 and separates the open ends of the reservoirs 39. The two ends of the filter screen 38 are fixedly connected and sleeved on the rotating shaft 33 and the driven roller 37, and the motor drives the rotating shaft 33 to enable the filter screen 38 to rotate along the rotating shaft 33 and the driven roller 37.

In order to clean the discharge flue more simply and conveniently, the tops of the first steering cavity 2 and the third steering cavity 3 are detachably sealed through sealing plates 6 respectively.

For better cleaning of the discharge flue, the device also comprises a dust cleaning device which comprises a dust cleaning rod 29 and a scraper 28. The length of the ash removing rod 29 is larger than that of the smoke tube, and the tail end of the ash removing rod is provided with a handle. The shape of the scraper 28 is adapted to the shape of the cross section of the smoke tube 4, and the scraper 28 is fixed at the head end of the ash removal rod 29, so that the scraper 28 can be arranged in the smoke tube 4 to scrape the inner wall of the smoke tube 4 through the ash removal rod 29. When the ash removing device is used, the scraper is arranged in the smoke tube and pushes the ash removing rod, and the edge of the scraper scrapes off dust or carbon deposit on the inner wall of the smoke tube, so that the ash removing device is simpler to operate and more convenient to use.

In order to improve the quality of the dried food, the drying machine also comprises an air swinging device 21. The air swinging device 21 comprises a fixed frame 26, an air swinging plate 27, a crank 25, an air swinging rod 23, a crank shaft 24 and a motor. The fixed frame 26 is fixedly connected with the wall of the air inlet 20 at the head end of the baking room 19. The two ends of the wind swinging plate 27 are provided with fixed shafts, and the fixed shafts at the two ends of the wind swinging plate 27 are respectively connected with the two sides of the fixed frame 26 through bearings. The crank 25 is arranged at one side of the fixed frame 26, one end of the crank is fixedly connected with the fixed shaft of the wind swinging plate 27, and the other end of the crank is fixedly connected with the wind swinging rod 23. The wind swing rod 23 is vertical to the horizontal plane. One end of the crankshaft 24 is fixedly connected with the air swing rod 23, and the other end of the crankshaft is in transmission connection with the motor through a gearbox, so that the crankshaft 24 can enable the air swing rod 23 to move through the transmission of the motor to be linked with the air swing plate 27 to rotate. The hot-blast more even of each position in the bakery, by the even quilt of drying material or food promptly, it is better to dry out material or food quality, and the quality is higher, and it is more convenient to use.

In order to facilitate the use and save the fuel resources, the exhaust outlet 22 at the end of the baking room 19 is provided with an exhaust duct 17. The inlet of the exhaust pipe 17 is communicated with the exhaust port 22, and the outlet is respectively communicated with the air supply port 18 outside the baking room 19 and at the front end of the hot air cavity 11 through a control valve. When the hot air circulation hot air oven is used, hot air in the baking room can be selectively led into the hot air cavity to form circulation, the heat energy utilization rate is high, fuel resources are saved, and the use is more convenient.

To better accommodate the combustible bulk waste fuel, the side walls of the combustion chamber 14 are also provided with openings 16. The opening 16 is openable and closable by a sealing door. So that the combustible block-shaped garbage can be better adapted to combustible block-shaped garbage fuels, such as block-shaped wood, wood boards and the like, the application range is wider, and the use is more convenient.

For more convenience and simplicity of operation, the smoke treatment device further comprises a collecting scraper 34 and a guide chute 35. The take-up scraper 34 is disposed on the upper portion of the screen 38 adjacent to the open end of the reservoir 39. The top end of the scraping plate 34 is provided with a bevel opening which is in contact connection with the upper part of the filter screen 38. The retracting blade 34 makes an angle of 30-60 degrees with the horizontal plane. The guide chute 35 is positioned at the bottom end of the retracting blade 34 and extends out of one side of the reservoir 39 such that material collected by the retracting blade 34 slides down the retracting blade 34 into the guide chute 35 and is transported by the guide chute 35 to one side of the reservoir 39. In the use, organic matter in the flue gas can form the floater after the water atomization that spraying system blowout comes and float on the surface of water of saving pond, the filter screen is along the pivot, when the driven voller rotates, the floater that forms after the atomizing adheres to the filter screen and takes away along with the filter screen, receipts scraper blade top bevel connection scrapes the floater on filter screen surface down, the floater slides down along receiving the scraper blade and gets into the direction chute, collect by one side of direction chute drainage to saving pond, collect the organic matter easy operation in the flue gas, high durability and convenient use. Secondly, when collecting the floater of scraper blade scraping filter screen collection, cleaned the clearance simultaneously to the filter screen, got into the savings pool bottom when the filter screen motion, water in the savings pool washs the filter screen, guarantees that the filter screen normally works, need not to clear up alone, wash the filter screen, and it is more convenient to use, operates simplyr.

Claims (8)

1. A roaster oven, comprising: comprises a combustion furnace, a baking room (19) and a smoke processing device; the combustion furnace comprises a combustion chamber (14), a hot air chamber (11) and a discharge flue;

the combustion chamber (14) is provided with a fuel inlet (15); a furnace bridge (13) is arranged below the combustion chamber (14), and an ash accumulation chamber is arranged at the bottom of the furnace bridge (13); the upper part of the combustion cavity (14) is provided with a smoke outlet (1);

the front end of the hot air cavity (11) is connected and isolated with the combustion cavity (14); the front end and the rear end of the hot air cavity (11) are respectively provided with an air supply port (18) and an air outlet;

the discharge flue comprises a first steering cavity (2), a second steering cavity (12), a third steering cavity (3), a fourth steering cavity (10) and a smoke pipe set;

the first turning cavity (2) and the third turning cavity (3) are sequentially arranged at the top of the hot air cavity (11) and are isolated from the hot air cavity (11); the first steering cavity (2) is communicated with a smoke outlet (1) at the upper part of the combustion cavity (14) through a control valve;

the second turning cavity (12) and the fourth turning cavity (10) are sequentially arranged at the bottom of the hot air cavity (11) and are isolated from the hot air cavity (11); the fourth steering cavity (10) is provided with a smoke outlet (8);

the smoke pipe group consists of smoke pipes (4), the smoke pipes (4) are vertically and uniformly arranged in the hot air cavity (11), and two ends of each smoke pipe respectively extend out of the hot air cavity (11); the smoke pipe group comprises a smoke pipe group, a smoke pipe group and a smoke pipe group; two ends of a group of smoke pipes (4) are respectively arranged in the first steering cavity (2) and the second steering cavity (12); two ends of the smoke pipes of the smoke pipe group are respectively arranged in the second steering cavity (12) and the third steering cavity (3); two ends of the smoke pipes (4) of the three groups of smoke pipes are respectively arranged in the third steering cavity (3) and the fourth steering cavity (10), so that smoke and heat energy of the combustion cavity (14) sequentially enter the one group of smoke pipes, the second steering cavity (12), the two groups of smoke pipes, the third steering cavity (3), the three groups of smoke pipes and the fourth steering cavity (10) along the first steering cavity (2);

the head end of the baking room (19) is provided with an air inlet (20), and the tail end is provided with an air outlet (22); an air inlet (20) at the head end of the baking room (19) is communicated with an air outlet at the rear end of the hot air cavity (11) through a hot air pipe (7) and an induced draft fan;

the smoke dust treatment device comprises a storage tank (39), a spraying system and a filter,

the upper part of the head end of the storage tank (39) is provided with a smoke inlet, and the smoke inlet (40) is communicated with a smoke outlet (8) of the fourth steering cavity (10) through a pipeline and an induced draft fan; the top of the head end of the storage tank (39) is provided with a cover plate and is sealed by the cover plate; the top of the tail end of the storage tank (39) is open, and the bottom of the tail end of the storage tank is provided with a slag discharge pipe (36) and is controlled by a valve;

the spraying system comprises a spraying pipe (31), a water pump (32) and a water pipe, wherein the spraying pipe (31) is provided with uniformly arranged water spraying openings, and nozzles (30) are fixed on the water spraying openings; the spraying pipes (31) are uniformly arranged and fixed below the top cover plate at the head end of the storage pool (39) to form a spraying pipe network; the spray pipe is communicated with a water source through a water pump (32) and a water pipe;

the filter comprises a rotating shaft (33), a driven roller (37), a filter screen (38) and a motor (), wherein the rotating shaft (33) is in transmission connection with the motor and is fixed below a head end cover plate of the storage pool (39) through a bearing seat and in front of a tail end opening; the driven roller (37) is fixed at the bottom of the storage pool (39) through a bearing seat corresponding to the rotating shaft (33); filter screen (38) are arranged in between savings pond (39) head end and the open mouth in end and are kept apart savings pond (39) head end and the open mouth in end, and this filter screen (38) both ends fixed connection just suit is on pivot (33), driven voller (37), and motor drive pivot (33) enable filter screen (38) to rotate along pivot (33), driven voller (37).

2. The roaster oven of claim 1 wherein: the fuel inlet (15) is provided with a spiral feeding device.

3. The roaster oven of claim 1 wherein: the tops of the first steering cavity (2) and the third steering cavity (3) are detachably sealed through sealing plates (6).

4. The roaster oven of claim 3 wherein: the device also comprises a dust cleaning device, wherein the dust cleaning device comprises a dust cleaning rod (29) and a scraper (28); the length of the ash removing rod (29) is greater than that of the smoke pipe () and the tail end of the ash removing rod is provided with a handle; the shape of the scraper (28) is adapted to the shape of the cross section of the smoke tube (4), and the scraper (28) is fixed at the head end of the ash removal rod (29) so that the scraper (28) can be placed in the smoke tube (4) to scrape the inner wall of the smoke tube (4) through the ash removal rod (29).

5. The roaster as claimed in any one of claims 1-4 wherein: also comprises a wind swinging device (21); the air swing device (21) comprises a fixed frame (26), an air swing plate (27), a crank (25), an air swing rod (23), a crank shaft (24) and a motor;

the fixed frame (26) is fixedly connected with the wall of the air inlet (20) at the head end of the baking room (19);

fixed shafts are arranged at two ends of the air swinging plate (27), and the fixed shafts at two ends of the air swinging plate (27) are respectively connected with two sides of the fixed frame (26) through bearings;

the crank (25) is arranged on one side of the fixed frame (26), one end of the crank is fixedly connected with the fixed shaft of the air swinging plate (27), and the other end of the crank is fixedly connected with the air swinging rod (23);

the air swing rod (23) is vertical to the horizontal plane;

one end of the crankshaft (24) is fixedly connected with the air swinging rod (23), the other end of the crankshaft is in transmission connection with the motor through a gearbox, and the crankshaft (24) enables the air swinging rod (23) to move through the motor transmission to be linked with the air swinging plate (27) to rotate.

6. The roaster oven of claim 5 wherein: the air outlet (22) at the tail end of the baking room (19) is provided with an air exhaust pipe (17), the inlet of the air exhaust pipe (17) is communicated with the air outlet (22), and the outlet of the air exhaust pipe is communicated with the air supplementing opening (18) at the front end of the hot air cavity (11) outside the baking room (19) through a control valve.

7. The roaster oven of claim 1 wherein: the side wall of the combustion cavity (14) is also provided with an opening (16); the opening (16) is openable and closable by means of a sealing door.

8. The roaster oven of claim 1 wherein: the smoke dust treatment device further comprises a collecting scraper (34) and a guide chute (35), the collecting scraper (34) is arranged on one side, adjacent to the opening at the tail end of the storage pool (39), of the upper part of the filter screen (38), an inclined opening is formed in the top end of the collecting scraper (34), and the inclined opening is in contact connection with the upper part of the filter screen (38); the angle between the scraper (34) and the horizontal plane is 30-60 degrees; the guiding chute (35) is arranged at the bottom end of the collecting scraper (34) and extends out of one side of the storage pool (39), so that the substances collected by the collecting scraper (34) slide down along the collecting scraper (34) to enter the guiding chute (35) and are conveyed to one side of the storage pool (39) by the guiding chute (35).

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