CN220793819U

CN220793819U - Multi-furnace body serial stepping type continuous heating furnace

Info

Publication number: CN220793819U
Application number: CN202322315841.9U
Authority: CN
Inventors: 刘佳晟; 胡波; 杨有明
Original assignee: Hunan Valin Xiangtan Iron and Steel Co Ltd
Current assignee: Hunan Valin Xiangtan Iron and Steel Co Ltd
Priority date: 2023-08-28
Filing date: 2023-08-28
Publication date: 2024-04-16
Anticipated expiration: 2033-08-28

Abstract

The utility model relates to the technical field of heating furnaces and discloses a multi-furnace-body serial stepping continuous heating furnace which comprises a preheating furnace body, wherein a track supporting plate is fixedly arranged at the bottom end of the right side of the preheating furnace body through bolts, two tracks are fixedly arranged on the track supporting plate through bolts, a sliding block is fixedly arranged at the bottom end of the preheating furnace body through bolts, and a threaded hole is formed in the middle of the sliding block. According to the utility model, the preheating furnace moving structure and the charging frame moving structure are designed and installed, the preheating furnace body is separated between the charging rack and the heating furnace body, and the charging rack is directly connected with the heating furnace body, so that a steel billet can directly enter the heating furnace body without passing through the preheating furnace body, the heating time is reduced, decarburization is prevented, the steel billet is preheated by taking high-temperature flue gas of the heating furnace body as a heat source of the preheating furnace body, the flue gas temperature of the heating furnace body is accurately controlled, the energy consumption is reduced, and the chimney is not corroded.

Description

Multi-furnace body serial stepping type continuous heating furnace

Technical Field

The utility model relates to the technical field of heating furnaces, in particular to a multi-furnace-body serial stepping continuous heating furnace.

Background

The utility model provides a step-by-step heating furnace is a continuous heating heat treatment equipment of wide use in the industry heat treatment industry, chinese patent application number 202120713760.2 discloses "an automatic change forging manipulator processing walking beam formula continuous heating furnace equipment, two pivoted bent plates cooperation plectane drive riser carries out rectangle promotion formula and carries, realize carrying the interval, heating time has been increased, guarantee the heating effect, work efficiency has been improved, thereby make the recess inboard wall outside remove, realize the steel sheet of non-width and support the heating, the use limitation has been eliminated, convenient to use, thereby make the second threaded rod break away from the riser, then pull the shell outside and can accomplish the dismantlement, reverse operation shell can be installed, the maintenance has been realized dismantling, convenient operation has been prolonged, and a service life is prolonged, and is convenient for popularize and use. "

The comparison document only solves the problems of unsatisfactory heating effect and short service life, the prior billet heating furnace generally has a preheating section, a heating section and a soaking section, so that the heating furnace is suitable for the diffusion requirement of partial alloy steel alloy components, the heating furnace is strictly required in the furnace time, the furnace body of the heating furnace is built longer and longer, the billet is longer in the furnace time, the production of partial easily decarburized steel types is unsuitable, meanwhile, the flue gas of the heating section which is relatively hot in the furnace cannot be controlled to enter the preheating section, the temperature and the heating speed of the preheating section cannot be accurately controlled, the heat cracking sensitive steel with strict requirements on the heating speed is very easy to generate heat cracking to influence the quality of products, only the burner of the heating section is closed to ensure that the billet is slowly heated, the heating capacity of the heating furnace cannot be exerted, and meanwhile, when the steel types which are easy to decarburize, the heat sensitive steel types and the component elements need to be diffused for a long time are often switched between the steel types, the methods such as an empty furnace and a hollow charging furnace are required, the steel type is very large in production impact, the switching of the steel types is generally extracted from the preheating section, the flue gas preheating section and the flue gas temperature is not fully influenced by the temperature fluctuation of the preheating section, the flue gas temperature is not influenced by the flue gas temperature fluctuation, and the flue gas is not sufficiently discharged, and the flue gas temperature is not favorable for the flue gas temperature consumption is reduced.

Disclosure of Invention

The utility model aims to provide a multi-furnace body serial stepping type continuous heating furnace, which solves the defects in the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions: the multi-furnace-body serial stepping continuous heating furnace comprises a preheating furnace body, wherein a track supporting plate is fixedly arranged at the bottom end of the right side of the preheating furnace body through bolts, two tracks are fixedly arranged on the track supporting plate through bolts, a sliding block is fixedly arranged at the bottom end of the preheating furnace body through bolts, and a threaded hole is formed in the middle of the sliding block;

the preheating furnace moving structure comprises a preheating furnace base, the preheating furnace base is slidably arranged at the bottom end of the preheating furnace body, a sliding block at the bottom end of the preheating furnace body is slidably arranged in the preheating furnace moving structure, and a track supporting plate at the bottom end of the preheating furnace body is slidably arranged at the top end of the preheating furnace base;

the furnace charging frame moving structure comprises a furnace charging frame, a chute, a first rack and a first bevel gear, wherein the furnace charging frame is fixedly arranged at the bottom end of the front side of the preheating furnace base through bolts, two rails are fixedly arranged at the top end of the furnace charging base through bolts, the two sides of the bottom end of the furnace charging frame are clamped and slidably arranged on the two rails, the chute is fixedly arranged between the furnace charging base and the preheating furnace base through bolts, the first rack is slidably arranged in the chute, an inner tooth slot is formed in one side, close to the preheating furnace base, of the first rack, an outer tooth slot is formed in one end, located outside the chute, of the first rack, which is far away from the preheating furnace base, the number of the outer tooth slots is one third of the number of the inner tooth slots, one end, close to the outer tooth slot, of the inner bottom third of the preheating furnace moving structure is fixedly provided with a mounting plate through bolts, and the first bevel gear is movably arranged on one side, close to the outer tooth slot, of the mounting plate;

the flue gas utilization structure comprises a heating furnace body, wherein the heating base is fixedly arranged on the rear side of the preheating furnace base through bolts, the heating furnace body is fixedly arranged on the heating base through bolts, and a plurality of burners are fixedly arranged on the top ends of the heating furnace body and the charging rack through bolts.

Further, the preheating furnace moving structure comprises a threaded rod, a driving disc and a clamping groove, wherein two ends of the threaded rod are movably mounted in the preheating furnace moving structure respectively through bearings on one side far away from an outer tooth groove and in the middle of a mounting plate, the driving disc is fixedly mounted at one end of the threaded rod located the mounting plate through bolts, and the clamping groove is uniformly arranged on one side, far away from the mounting plate, of the driving disc in a plurality of circumferential manners.

Further, the preheating furnace moving structure comprises a clamping column, an output wheel and a motor, wherein the clamping column is provided with a plurality of clamping grooves in a sharing mode and is inserted into the clamping grooves in a clamping mode, the output wheel is movably sleeved outside the transmission disc, a plurality of column grooves which are uniformly distributed are formed in the output wheel, the output wheel is correspondingly inserted into the column grooves and is provided with springs, the springs are fixedly arranged at the bottom ends of the output wheel through bolts, the springs are fixedly arranged at the bottom ends of the column grooves, the motor is fixedly arranged at the bottom ends of the preheating furnace base through bolts, and an output shaft of the motor is fixedly arranged at one side, far away from the mounting plate, of the output wheel through the bolts.

Further, the charging frame moving structure comprises a second bevel gear, a middle rotating wheel and a first transmission gear, wherein the second bevel gear is arranged below the first bevel gear and is movably mounted at the inner bottom end of the preheating furnace base through a bearing, the second bevel gear is meshed with the first bevel gear, a belt pulley is fixedly mounted on an output shaft of the motor through a bolt, the first bevel gear is movably connected with the belt pulley through a belt, the middle rotating wheel is movably mounted at the middle of one side of the preheating furnace base, which is close to the charging rack, the bottom end of the second bevel gear is movably connected with the bottom end of the middle rotating wheel through a belt, the first transmission gear is movably mounted at the middle of one side of the preheating furnace base, which is close to the charging rack through a belt, and the bottom end of the middle rotating wheel is movably connected with the bottom end of the first transmission gear through a belt.

Further, the charging frame moving structure comprises a second transmission gear, a third transmission gear and a second rack, the second transmission gear is meshed with an external gear groove of the first rack, a connecting block is fixedly arranged at the top end of the chute, which is close to one side of the charging rack, and is positioned at the first transmission gear through bolts, a transmission rod is movably arranged in the connecting block through a bearing, the second transmission gear is fixedly arranged at the bottom end of the transmission rod through the bolts, the third transmission gear is fixedly arranged at the top end of the transmission rod through the bolts, the second rack is fixedly arranged at the bottom end of the charging rack, which is close to one side of the transmission rod, and the second rack is meshed with the third transmission gear.

Further, the flue gas utilization structure comprises a heating furnace flue gas outlet pipe, pipeline valves and a first flue gas outlet pipeline, the heating furnace flue gas outlet pipe is inserted and installed in the middle of the top end of a heating furnace body through bolts, two flue gas outlet ports are formed in the top end of the heating furnace flue gas outlet pipe, two pipeline valves are all arranged and are respectively inserted and installed in the flue gas outlet ports through bolts, and the first flue gas outlet pipeline is inserted and installed in the middle of one pipeline valve far away from a second rack through bolts.

Further, the flue gas utilization structure comprises a second flue gas outlet pipeline, a preheating flue gas inlet pipeline and a preheating flue gas outlet pipeline, wherein the second flue gas outlet pipeline is inserted and installed in the middle of a pipeline valve close to a second rack through a bolt, the preheating flue gas inlet pipeline is inserted and installed in the middle of one side, far away from the second rack, of the top end of a preheating furnace body through the bolt, and the preheating flue gas outlet pipeline is inserted and installed in the middle of one side, close to the second rack, of the top end of the preheating furnace body through the bolt.

Compared with the prior art, the multi-furnace body serial stepping continuous heating furnace provided by the utility model,

according to the utility model, the preheating furnace moving structure and the charging frame moving structure are designed and installed, the preheating furnace is separated from the middle of the charging frame and is directly connected with the heating furnace, so that when steel seeds easy to decarbonize are produced, steel billets can directly enter the heating furnace without passing through the preheating furnace, the heating time is reduced to prevent decarbonizing, when steel seeds needing to be slowly heated are produced, the temperature of the heating flue gas can be selectively and slowly increased to be higher than the AC3 temperature to avoid hot cracks generated by rapid heating, when steel seeds needing to be long-time diffused with alloy elements are produced, the steel billets can be selectively and diffused in the preheating furnace instead of stopping the heating furnace to preserve heat for diffusion, the steel billets can be slowly heated in the preheating furnace or diffused for a long time without stopping the furnace, at the moment, the steel seeds not needing to be slowly heated or diffused with alloy elements can be produced at the same time, the heating furnace is used as a heat source for preheating of the heating furnace body to ensure the continuity of production, the temperature of the heating flue gas can be controlled to be higher than the AC3 temperature, and the corrosion resistance of a chimney cannot be reduced in energy consumption due to corrosion resistance.

Drawings

For a clearer description of embodiments of the present application or of the solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments described in the present utility model, and that other drawings may be obtained according to these drawings for a person skilled in the art.

FIG. 1 is a schematic diagram of an overall structure according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a preheating moving structure and a charging frame moving structure according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of the structure at A according to an embodiment of the present utility model;

fig. 4 is a schematic diagram illustrating the disassembly of a moving structure of a charging frame according to an embodiment of the present utility model;

fig. 5 is a partial schematic view illustrating the disassembly of a moving structure of a charging frame according to an embodiment of the present utility model.

Reference numerals illustrate:

1. preheating a furnace body; 2. a preheating furnace moving structure; 201. a preheating furnace base; 202. a threaded rod; 203. a drive plate; 204. a clamping groove; 205. a clamping column; 206. an output wheel; 207. a motor; 3. a furnace charging frame moving structure; 301. charging rack; 302. a chute; 303. a first rack; 304. a first bevel gear; 305. a second bevel gear; 306. a middle rotating wheel; 307. a first transmission gear; 308. a second transmission gear; 309. a third transmission gear; 310. a second rack; 4. a flue gas utilization structure; 401. heating the furnace body; 402. a smoke outlet pipe of the heating furnace; 403. a conduit valve; 404. a first smoke outlet pipe; 405. a second smoke outlet pipe; 406. preheating a smoke inlet pipeline; 407. preheating a smoke outlet pipeline; 5. and (3) a burner.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, a multi-furnace body serial stepping continuous heating furnace comprises a preheating furnace body 1, wherein a track supporting plate is fixedly arranged at the bottom end of the right side of the preheating furnace body 1 through bolts, two tracks are fixedly arranged on the track supporting plate through bolts, a sliding block is fixedly arranged at the bottom end of the preheating furnace body 1 through bolts, and a threaded hole is formed in the middle of the sliding block;

the preheating furnace moving structure 2 comprises a preheating furnace base 201, the preheating furnace base 201 is slidably arranged at the bottom end of the preheating furnace body 1, a sliding block at the bottom end of the preheating furnace body 1 is slidably arranged in the preheating furnace moving structure 2, and a track supporting plate at the bottom end of the preheating furnace body 1 is slidably arranged at the top end of the preheating furnace base 201;

the furnace charging frame moving structure 3 comprises a furnace charging frame 301, a chute 302, a first rack 303 and a first bevel gear 304, wherein the furnace charging frame is fixedly arranged at the bottom end of the front side of the furnace charging frame 201 through bolts, two rails are fixedly arranged at the top end of the furnace charging frame through bolts, two sides of the bottom end of the furnace charging frame 301 are clamped and slidingly arranged on the two rails, the chute 302 is fixedly arranged between the furnace charging frame and the furnace charging frame 201 through bolts, the first rack 303 is slidingly arranged in the chute 302, an inner tooth groove is formed in one side, close to the furnace charging frame 201, of the first rack 303, an outer tooth groove is formed in one end, which is positioned outside the chute 302, of one side, far away from the furnace charging frame 201, of the first rack 303, the number of the outer tooth grooves is one third of the number of the inner tooth grooves, one third of the inner bottom end, close to the outer tooth groove, of the furnace charging frame 2 is fixedly arranged with a mounting plate through bolts, and the first bevel gear 304 is movably arranged on one side, close to the outer tooth groove, of the mounting plate;

the flue gas utilization structure 4, the flue gas utilization structure 4 includes heating furnace body 401, and the rear side of preheating furnace base 201 has the heating base through bolt fixed mounting, and heating furnace body 401 passes through bolt fixed mounting on the heating base, and heating furnace body 401 and the top of loading rack 301 have a plurality of nozzle 5 through bolt fixed mounting.

The preheating furnace moving structure 2 comprises a threaded rod 202, a transmission disc 203 and clamping grooves 204, wherein two ends of the threaded rod 202 are respectively movably arranged at one side, far away from an external tooth groove, of the inside of the preheating furnace moving structure 2 and the middle of a mounting plate through bearings, the transmission disc 203 is fixedly arranged at one end, located at the mounting plate, of the threaded rod 202 through bolts, and the clamping grooves 204 are shared in a plurality and are uniformly arranged at one side, far away from the mounting plate, of the transmission disc 203; the preheating furnace body 1 is driven to translate to the preheating furnace base 201 by the threaded rod 202;

the preheating furnace moving structure 2 comprises a clamping column 205, an output wheel 206 and a motor 207, wherein the clamping column 205 is provided with a plurality of clamping grooves in a sharing way and is inserted and clamped in the clamping groove 204, the output wheel 206 is movably sleeved outside the transmission disc 203, a plurality of column grooves which are uniformly distributed are formed in the output wheel 206, the output wheel 206 is correspondingly inserted and installed in the column grooves, the bottom end of the output wheel 206 is fixedly provided with a spring through a bolt, the spring is fixedly installed at the bottom end inside the column groove through a bolt, the motor 207 is fixedly installed at the bottom end inside the preheating furnace base 201 through a bolt, and an output shaft of the motor 207 is fixedly installed at one side, far away from the mounting plate, of the output wheel 206 through a bolt; the motor 207 is used for providing power for the movement of the preheating furnace body 1 and the charging rack 301;

the charging frame moving structure 3 comprises a second bevel gear 305, a transfer wheel 306 and a first transmission gear 307, wherein the second bevel gear 305 is arranged below the first bevel gear 304 and movably arranged at the inner bottom end of the preheating furnace base 201 through a bearing, the second bevel gear 305 is meshed with the first bevel gear 304, a belt pulley is fixedly arranged on an output shaft of the motor 207 through a bolt, the first bevel gear 304 is movably connected with the belt pulley through a belt, the transfer wheel 306 is movably arranged at the middle of one side of the preheating furnace base 201, which is close to the charging rack 301, through a bearing, the bottom end of the second bevel gear 305 is movably connected with the bottom end of the transfer wheel 306 through a belt, the first transmission gear 307 is movably arranged at the middle of one side of the preheating furnace base 201, which is close to the charging rack 301, and the bottom end of the transfer wheel 306 is movably connected with the bottom end of the first transmission gear 307 through a belt; the first rack 303 is driven to move in the chute 302 by the first transmission gear 307;

the charging frame moving structure 3 comprises a second transmission gear 308, a third transmission gear 309 and a second rack 310, wherein the second transmission gear 308 is meshed with an external gear groove of the first rack 303, a connecting block is fixedly arranged at the top end of the chute 302, which is close to one side of the charging frame 301, and is positioned at the position of the first transmission gear 307 through bolts, a transmission rod is movably arranged in the connecting block through bearings, the second transmission gear 308 is fixedly arranged at the bottom end of the transmission rod through bolts, the third transmission gear 309 is fixedly arranged at the top end of the transmission rod through bolts, the second rack 310 is fixedly arranged at the bottom end of the charging frame 301, which is close to one side of the transmission rod, through bolts, and the second rack 310 is meshed with the third transmission gear 309; the second rack 310 is driven to move through the third transmission gear 309, and then the charging rack 301 is driven to move towards the heating furnace body 401 through the second rack 310;

the flue gas utilization structure 4 comprises a heating furnace flue gas outlet pipe 402, pipeline valves 403 and a first flue gas outlet pipeline 404, wherein the heating furnace flue gas outlet pipe 402 is inserted and installed in the middle of the top end of the heating furnace body 401 through bolts, two flue gas outlet ports are formed in the top end of the heating furnace flue gas outlet pipe 402, two pipeline valves 403 are shared and are respectively inserted and installed in the flue gas outlet ports through bolts, and the first flue gas outlet pipeline 404 is inserted and installed in the middle of one pipeline valve 403 far away from the second rack 310 through bolts; the discharge direction of the high temperature flue gas is controlled by the duct valve 403.

The flue gas utilization structure 4 comprises a second flue gas outlet pipeline 405, a preheating flue gas inlet pipeline 406 and a preheating flue gas outlet pipeline 407, wherein the second flue gas outlet pipeline 405 is inserted and installed in the middle of one pipeline valve 403 close to the second rack 310 through bolts, the preheating flue gas inlet pipeline 406 is inserted and installed in the middle of one side of the top end of the preheating furnace body 1 far away from the second rack 310 through bolts, and the preheating flue gas outlet pipeline 407 is inserted and installed in the middle of one side of the top end of the preheating furnace body 1 close to the second rack 310 through bolts; the heating temperature in the heating furnace body 401 is controlled by the preheating outlet flue 407.

And all that is not described in detail in this specification is prior art that is well known to those skilled in the art.

Working principle: when in use, when steel which needs to be slowly heated and is easy to generate cracks when being heated too fast is produced, a steel billet is placed on the charging rack 301, the steel billet is sent into the preheating furnace body 1 through the charging rack 301, at the moment, a pipeline valve 403 close to the first smoke outlet pipeline 404 is opened, high-temperature smoke in the heating furnace body 401 is led into the preheating furnace body 1 through the heating furnace smoke outlet pipeline 402 via the first smoke outlet pipeline 404 and the preheating smoke inlet pipeline 406, the steel billet is slowly heated to the temperature above an AC3 line through the high-temperature smoke in the preheating furnace body 1 and the burner 5 at the top end of the preheating furnace body 1, then the steel billet is heated in the heating furnace body 401, the steel billet is fully preheated by the high-temperature smoke of the heating furnace body 401, the steel billet is slowly heated in the preheating furnace body 1 according to a preset heating curve, thereby the heating quality is ensured, when products which are easy to decarbonize and steel types which can be hot-filled are produced, heating time is required to be shortened as much as possible, rapid heating is required, so that the preheating furnace body 1 can not be used any more, a billet on the charging rack 301 is required to directly enter the heating furnace body 401, at the moment, a motor 207 is started, an output wheel 206 is driven to rotate through the motor 207, the output wheel 206 is driven to rotate when being in a clamping state due to clamping of a clamping column 205 and a clamping groove 204, the transmission disk 203 is driven to rotate, at the moment, the transmission disk 203 drives a threaded rod 202 to rotate, a sliding block is driven to move towards one end far from a mounting plate in the preheating furnace base 201 when the threaded rod 202 rotates, the sliding block drives the preheating furnace body 1 and a track supporting plate to move together when moving, when the track on the track supporting plate is coincident with the track on the charging base, the preheating furnace body 1 is just stopped, after the motor 207 is started, a belt pulley is driven to rotate, and a first bevel gear 304 is driven to rotate through a belt, when the first bevel gear 304 rotates, the second bevel gear 305 is driven to rotate through the first bevel gear 304, the middle rotating wheel 306 is driven to rotate through the belt, when the middle rotating wheel 306 rotates, the first transmission gear 307 is driven to rotate through the belt, when the first transmission gear 307 rotates, the first rack 303 is driven to move in the chute 302, when the preheating furnace body 1 stops moving, the external tooth groove of the first rack 303 just moves to the position of the second transmission gear 308, at the moment, the clamping column 205 is not clamped with the clamping groove 204 and enters 603 under the power of the motor 207, the motor 207 still drives the belt pulley to rotate, the second transmission gear 308 drives the third transmission gear 309 to rotate, the second rack 310 is driven to move towards the direction of the heating furnace body 401 through the third transmission gear 309, the second rack 310 drives the charging rack 301 to move to the position when the preheating furnace body 1 does not move on a track, at the moment, the heating time is not greatly shortened through the preheating furnace body 1, the generation of the heating furnace body can be effectively prevented, the heating furnace body 1 can be stored for a long time, the steel type 406 of the furnace is not required to be clamped with the clamping groove 204 and enters 603 under the power of the motor 207, the condition that the preheating furnace body is not connected with the first flue gas pipeline and the second flue gas pipeline is reset, if the preheating rack 301 is reset, and the heating furnace 1 can be preheated, and the heating temperature of the heating furnace body 1 can be turned off by the high-saving flue gas is controlled, and the heating furnace-saving device is needed, if the heating furnace-state is turned off, and the heating device is used for the heating furnace 1, and the heating furnace is connected to be the heating furnace 1, and the heating furnace is turned off, and the heating device is used.

It is noted that relational terms such as first and second, and the like are 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. Moreover, 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. Also in the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. And in the drawings of the present utility model, the filling patterns are only for distinguishing the layers, and are not limited in any way.

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

Claims

1. The utility model provides a multi-furnace body series connection marching type continuous heating furnace, includes preheating furnace body (1), the right side bottom fixed mounting of preheating furnace body (1) has the track backup pad, and fixed mounting has two tracks in the track backup pad, the bottom fixed mounting of preheating furnace body (1) has the slider, and the screw hole has been seted up in the middle of the slider, its characterized in that:

the preheating furnace moving structure (2), the preheating furnace moving structure (2) comprises a preheating furnace base (201), the preheating furnace base (201) is movably arranged at the bottom end of the preheating furnace body (1), a sliding block at the bottom end of the preheating furnace body (1) is slidably arranged in the preheating furnace moving structure (2), and a track supporting plate at the bottom end of the preheating furnace body (1) is slidably arranged at the top end of the preheating furnace base (201);

the furnace charging frame moving structure (3), the furnace charging frame moving structure (3) comprises a furnace charging frame (301), a chute (302), a first rack (303) and a first bevel gear (304), wherein the furnace charging base is fixedly arranged at the bottom end of the front side of the furnace charging base (201), two rails are fixedly arranged at the top end of the furnace charging base, two sides of the bottom end of the furnace charging frame (301) are movably arranged on the two rails, the chute (302) is fixedly arranged between the furnace charging base and the furnace charging base (201), the first rack (303) is slidably arranged in the chute (302), an inner tooth socket is formed in one side, close to the furnace charging base (201), of the first rack (303), one end, far away from the furnace charging base (201), of the first rack (303) is provided with an outer tooth socket, the number of which is one third of the number of the inner tooth sockets is arranged at one end, close to the outer tooth socket (304), of one third of the inner bottom end of the furnace charging frame (2) is fixedly arranged at one end, close to the outer tooth socket (304), of the first bevel gear (303) is movably arranged on one side, close to the outer tooth socket (1);

the flue gas utilization structure (4), flue gas utilization structure (4) include heating furnace body (401), the rear side fixed mounting of preheating furnace base (201) has the heating base, heating furnace body (401) fixed mounting is on the heating base, the top fixed mounting of heating furnace body (401) and loading rack (301) has a plurality of nozzle (5).

2. The multi-furnace serial stepping continuous heating furnace according to claim 1, wherein: the preheating furnace moving structure (2) comprises a threaded rod (202), a transmission disc (203) and a clamping groove (204), wherein two ends of the threaded rod (202) are movably mounted in the preheating furnace moving structure (2) respectively through bearings, the transmission disc (203) is fixedly mounted at one end of the threaded rod (202) located on the mounting plate through bolts, and the clamping groove (204) is uniformly arranged on one side of the transmission disc (203) far away from the mounting plate in a plurality of circumferential arrangement mode.

3. A multi-furnace serial stepping continuous heating furnace according to claim 2, wherein: the utility model provides a preheating furnace moving structure (2) includes draw-in post (205), output wheel (206) and motor (207), draw-in post (205) are a plurality of and insert the block and connect in draw-in groove (204), output wheel (206) activity cup joints outside driving disk (203), set up a plurality of column groove that distributes evenly in output wheel (206), output wheel (206) all correspond to insert and install in the column groove, output wheel (206) bottom is through bolt fixed mounting there being the spring, and the spring passes through bolt fixed mounting in the inside bottom of column groove, motor (207) are through bolt fixed mounting in the inside bottom of preheating furnace base (201), the output shaft of motor (207) is through bolt fixed mounting in one side that output wheel (206) kept away from the mounting panel.

4. A multi-furnace serial stepping continuous heating furnace according to claim 3, wherein: the utility model provides a charging frame removes structure (3) including second bevel gear (305), transfer wheel (306) and first drive gear (307), second bevel gear (305) are in the below of first bevel gear (304) and through bearing movable mounting in the inside bottom of preheating furnace base (201), second bevel gear (305) are connected with first bevel gear (304) meshing, there is the belt pulley on the output shaft of motor (207) through bolt fixed mounting, first bevel gear (304) pass through belt and belt pulley swing joint, transfer wheel (306) are in the middle of the one side of preheating furnace base (201) being close to charging rack (301) through bearing movable mounting, the bottom of second bevel gear (305) is through belt and the bottom swing joint of transfer wheel (306), first drive gear (307) are through bearing movable mounting in the middle of the one side of preheating furnace base (201) being close to charging rack (301), the bottom of transfer wheel (306) is through belt and the bottom swing joint of first drive gear (307).

5. The multi-furnace serial stepping continuous heating furnace according to claim 4, wherein: the furnace charging frame moving structure (3) comprises a second transmission gear (308), a third transmission gear (309) and a second rack (310), wherein the second transmission gear (308) is meshed with an external gear groove of the first rack (303), a connecting block is fixedly arranged at the top end of the chute (302) close to one side of the furnace charging frame (301) and is positioned at the position of the first transmission gear (307) through bolts, a transmission rod is movably arranged in the connecting block through bearings, the second transmission gear (308) is fixedly arranged at the bottom end of the transmission rod through bolts, the third transmission gear (309) is fixedly arranged at the top end of the transmission rod through bolts, the second rack (310) is fixedly arranged at the bottom end of the furnace charging frame (301) close to one side of the transmission rod, and the second rack (310) is meshed with the third transmission gear (309).

6. The multi-furnace serial stepping continuous heating furnace according to claim 5, wherein: the utility model provides a flue gas utilization structure (4) is including heating furnace play tobacco pipe (402), pipeline valve (403) and first play cigarette pipeline (404), heating furnace play tobacco pipe (402) are installed in the middle of the top of heating furnace body (401) through the bolt insertion, two play smoke outlet have been seted up on the top of heating furnace play tobacco pipe (402), pipeline valve (403) are total two and are installed in the play smoke outlet through the bolt insertion respectively, first play cigarette pipeline (404) are installed in the centre of one pipeline valve (403) of keeping away from second rack (310) through the bolt insertion.

7. The multi-furnace serial stepping continuous heating furnace according to claim 6, wherein: the flue gas utilization structure (4) comprises a second flue gas outlet pipeline (405), a preheating flue gas inlet pipeline (406) and a preheating flue gas outlet pipeline (407), wherein the second flue gas outlet pipeline (405) is inserted and installed in the middle of a pipeline valve (403) close to the second rack (310) through bolts, the preheating flue gas inlet pipeline (406) is inserted and installed in the middle of one side, far away from the second rack (310), of the top end of the preheating furnace body (1), and the preheating flue gas outlet pipeline (407) is inserted and installed in the middle of one side, close to the second rack (310), of the top end of the preheating furnace body (1) through bolts.