CN220670171U - Material blocking mechanism of heating furnace - Google Patents

Abstract

The utility model provides a material blocking mechanism of a heating furnace, which is applied to the heating furnace in the metallurgical industry; the heating furnace comprises a furnace body, a shell, a transmission roller, a driving assembly, a heating assembly and an electric cabinet, wherein the shell is arranged on the upper side of the furnace body, and the shell and the furnace body form a heating cavity; the transmission roller is rotatably arranged in the furnace body, the heating component is arranged on the inner wall of the shell, the electric cabinet is arranged outside the shell, and the electric cabinet is connected with the driving component and the heating component in a communication way. According to the utility model, the material blocking mechanism is arranged at the outer side of the furnace outlet, the material blocking assembly comprises a plurality of baffles, the baffles are connected into a whole through the connecting rods, the two baffles at the end part of the baffle assembly are also provided with baffle assembly connecting holes, and the transverse plate is provided with a plurality of transverse plate connecting holes.

Description

Material blocking mechanism of heating furnace

Technical Field

The utility model relates to the technical field of steel heat treatment in the metallurgical industry, in particular to a material blocking mechanism of a heating furnace.

Background

A furnace is a device that heats a material or a workpiece. The fuel heating furnace, the resistance heating furnace, the induction heating furnace, the microwave heating furnace and the like are divided according to heat sources. The method is applied to the fields of petroleum, chemical industry, metallurgy, machinery, heat treatment, surface treatment, building materials, electronics, materials, light industry, daily chemicals, pharmacy and the like.

In the metallurgical industry, in the heat treatment operation that the heating furnace is arranged in steel, when steel from the heating furnace through heat treatment operation to the follow-up process of heating furnace, in order to guarantee that the pause position of steel is the same at every turn, generally adopt electronic position inductor to set up in the below of transfer roller in prior art, when steel moved to the top of electronic position inductor, the transportation of transfer roller is stopped to electronic position inductor feedback information to controller. But also can have the error when the position of steel on the transfer roller after the transfer roller stops, consequently still can set up the stock stop among the prior art, make steel blocked by the stock stop to guarantee that the position of steel on the transfer roller is the same, heating furnace among the prior art generally has four baffles, is provided with four fastening bolt on every baffle, when producing the steel of different specifications, all need demolish the position of back adjustment four baffles with sixteen fastening bolt, it is laborious to take, change inefficiency.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present utility model is to provide a material blocking mechanism of a heating furnace, so as to solve the problems of the prior art, such as high effort and effort, low replacement efficiency and complicated operation of the material blocking mechanism of the heating furnace during the replacement of the position.

In order to achieve the purpose, the utility model provides a material blocking mechanism of a heating furnace, which is applied to the heating furnace in the metallurgical industry; the heating furnace comprises a furnace body, one end of the furnace body is provided with a furnace inlet, the other end of the furnace body is provided with a furnace outlet, and the material blocking mechanism is arranged at the outer side of the furnace outlet; the material blocking mechanism comprises a transverse plate, a baffle plate assembly and a connecting assembly, wherein the transverse plate is arranged on the outer side of the furnace body, the baffle plate assembly is fastened on the transverse plate through the connecting assembly, and the baffle plate assembly is used for blocking materials.

Preferably, the heating furnace comprises a furnace body, a shell, a transmission roller, a driving assembly, a heating assembly and an electric cabinet, wherein the shell is arranged on the upper side of the furnace body, and an inner cavity enclosed by the shell and the furnace body forms a heating cavity; the transmission roller is rotatably arranged in the furnace body, the end part of the heating component is connected with the shell, the electric cabinet is arranged outside the shell, and the electric cabinet is connected with the driving component and the heating component in a communication way.

Preferably, the baffle assembly comprises a plurality of baffles, the baffles are integrally connected through connecting rods, baffle through holes are formed in the baffles, a plurality of connecting rod through holes are formed in the connecting rods, and the baffle through holes can be aligned with different connecting rod through holes and are fastened and connected through connecting assemblies arranged in the baffle through holes and the connecting rod through holes.

Preferably, baffle subassembly connecting holes have still been seted up on two baffles of baffle subassembly tip, a plurality of diaphragm connecting hole has been seted up on the diaphragm, baffle subassembly connecting hole can align and pass through the coupling assembling fastening connection between baffle subassembly connecting hole, diaphragm connecting hole two with different diaphragm connecting holes.

Preferably, a plurality of grooves with downward openings are formed in the shell wall of the shell, a plurality of grooves with upward openings are formed in the furnace wall of the heating furnace, and the grooves in the shell wall of the shell are aligned with the grooves in the furnace wall of the heating furnace to form a closed circle; the bearing is sleeved on the transmission roller and is placed in the closed circle; the outside of bearing still is provided with the sprocket, and a plurality of transmission roller passes through the sprocket to and set up the chain connection on the sprocket, drive assembly is connected with the chain transmission.

Preferably, heat preservation cotton is further arranged between the grooves on the shell wall of the shell and the grooves on the furnace wall of the heating furnace.

Preferably, the heating component comprises a corundum tube, a resistance wire, a ceramic ring and a leading-out rod, wherein the resistance wire is wound on the outer peripheral surface of the corundum tube, a through hole is formed in the corundum tube, and two ends of the resistance wire penetrate through the through hole and enter the corundum tube; the ceramic rings are arranged at two ends of the inside of the corundum tube, the number of the extraction rods is two, the two extraction rods are respectively arranged in the two ceramic rings at two ends of the corundum tube in a penetrating way, and one end of each extraction rod is connected with the end part of the resistance wire; the other end part of the extraction rod far away from the resistance wire penetrates through the shell wall of the shell, and a nut is arranged at the other end penetrating out of the shell wall.

Preferably, the top of shell still is provided with a plurality of thermocouple, thermocouple and electric cabinet communication connection for detect the temperature in the heating chamber.

Preferably, the side wall of the shell is also provided with a plurality of observation windows.

Preferably, the heating furnace further comprises an external vertical frame, and a lifting assembly is further arranged between the external vertical frame and the shell and used for driving the shell to lift.

As described above, the dam mechanism of the heating furnace has the following beneficial effects:

the baffle mechanism of the heating furnace is arranged at the outer side of the furnace outlet, the baffle assembly comprises a plurality of baffles, the baffles are connected into a whole through connecting rods, baffle assembly connecting holes are further formed in two baffles at the end part of the baffle assembly, a plurality of transverse plate connecting holes are formed in the transverse plates, the baffle assembly connecting holes are aligned with different transverse plate connecting holes and are fixedly connected through connecting assemblies arranged between the transverse plate connecting holes, and therefore steel products with different sizes are blocked by the baffles, only the connecting assemblies on the two baffles at the end part of the baffle assembly are required to be adjusted, and compared with the prior art, the mode of disassembling sixteen screws and four baffles is more convenient, time-saving, labor-saving, efficient and quick.

Drawings

FIG. 1 is a front view of a dam mechanism of a heating furnace of the present utility model;

FIG. 2 is a top view of a dam mechanism of the heating furnace of the present utility model;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a left side view of a dam mechanism of the heating furnace of the present utility model;

fig. 5 is an enlarged view at B in fig. 4.

Reference numerals illustrate:

1. a furnace body; 2. a housing; 3. an electric control box; 4. a thermocouple; 5. an observation window; 6. a protective cover; 7. a conveying roller; 8. a column; 9. a baffle assembly; 901. a baffle; 902. a connecting rod; 903. a baffle assembly connection hole; 904. a connecting rod through hole; 905. a baffle through hole; 10. a cross plate; 1001. a cross plate connecting hole; 11. a heating assembly; 1101. a lead-out bar; 1102. a corundum tube; 1103. a resistance wire; 1104. a ceramic ring; 12. and (5) heat preservation cotton.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper", "lower", "left", "right", "middle", etc. are used herein for convenience of description, but are not to be construed as limiting the scope of the utility model, and the relative changes or modifications are not to be construed as essential to the scope of the utility model.

As shown in fig. 1-5, the utility model provides a material blocking mechanism of a heating furnace, which is applied to the heating furnace in the metallurgical industry; the heating furnace comprises a furnace body 1, wherein one end of the furnace body 1 is provided with a furnace inlet, the other end of the furnace body is provided with a furnace outlet, and the material blocking mechanism is arranged at the outer side of the furnace outlet; the material blocking mechanism comprises a transverse plate 10, a baffle plate assembly 9 and a connecting assembly, wherein the transverse plate 10 is arranged on the outer side of the furnace body 1, the baffle plate assembly 9 is fastened on the transverse plate 10 through the connecting assembly, and the baffle plate assembly 9 is used for blocking materials.

According to the material blocking mechanism of the heating furnace, after the steel is subjected to heat treatment in the heating furnace, the steel flows out of the furnace outlet and is abutted against the baffle plate assembly 9, and the baffle plate assembly 9 absorbs and counteracts the power carried by the steel in the transmission of the heating furnace, so that the phenomenon that the positions of the steel are different due to the fact that the steel moves forwards again by virtue of inertia when the transmission is stopped is avoided, the static positions of the steel after flowing out of the furnace outlet are basically the same, and the steel is conveniently grabbed by the grabbing and conveying device in the subsequent process. Meanwhile, the baffle plate assembly 9 is fastened on the transverse plate 10 through the connecting assembly, so that the operation is simple, and compared with the complicated operation in the prior art, the operation is simpler and quicker, and the labor efficiency is improved.

Preferably, as shown in fig. 1-5, the heating furnace comprises a furnace body 1, a shell 2, a transmission roller 7, a driving component, a heating component 11 and an electric cabinet 3, wherein the shell 2 is arranged on the upper side of the furnace body 1, and an inner cavity enclosed by the shell 2 and the furnace body 1 forms a heating cavity; the rotatable setting of transmission roller 7 is in furnace body 1, and heating element 11's both ends tip and shell 2 fixed connection, electric cabinet 3 setting are on the outer wall of shell 2, and electric cabinet 3 and drive assembly, heating element 11 communication are connected.

Preferably, as shown in fig. 2 and 3, the baffle assembly 9 includes a plurality of baffles 901, the plurality of baffles 901 are integrally connected by connecting rods 902, baffle through holes 905 are formed in the baffles 901, a plurality of connecting rod through holes 904 are formed in the connecting rods 902, and each baffle through hole 905 can be aligned with a different connecting rod through hole 904 and is fastened and connected by a connecting assembly arranged in the baffle through hole 905 and the connecting rod through hole 904. Further, in this embodiment, the quantity of baffle 901 is four, and the quantity of connecting rod 902 is one, and connecting rod 902 sets up at the top of four baffles 901, and four baffles 901 constitute integrated connection through connecting rod 902, when needs change baffle 901, only need to dismantle baffle 901 to baffle subassembly 9 both ends department, can quick replacement, and is quick convenient, improves work efficiency.

Further, the steel plate moves on the transfer roller 7, so the steel plate moves along the horizontal plane formed by the transfer roller 7, and the height of the baffle 901 is the same as the height of the horizontal plane formed by the transfer roller 7, that is, the baffle 901 can block the steel plate.

Further, the position of the baffle 901 can be adjusted, and the baffle 901 can move to align the baffle through holes 905 on the baffle with different connecting rod through holes 904, so that the interval between two adjacent baffles 901 can be adjusted. When the width of the steel plate changes, the distance between the adjacent baffles 901 can be adjusted, so that the steel plates with different specifications are blocked, and the application range is enlarged.

Preferably, as shown in fig. 2 and 3, two baffle plates 901 at the end of the baffle plate assembly 9 are further provided with baffle plate assembly connection holes 903, and a plurality of transverse plate connection holes 1001 are provided on the transverse plate 10, and the baffle plate assembly connection holes 903 can be aligned with different transverse plate connection holes 1001 and are fastened and connected by connection assemblies arranged between the baffle plate assembly connection holes 903 and the transverse plate connection holes 1001. In the present embodiment, the number of the baffle assembly connection holes 903 on each baffle 901 is two, which are respectively provided at both sides of the baffle through hole 905 for the fastening connection of the baffle assembly 9 and the cross plate 10. Alignment of the baffle assembly attachment holes 903 with the different cross plate attachment holes 1001 can change the position of the baffle assembly 9 on the cross plate 10. When deviation occurs in the feeding position of the steel plate in the heating furnace (for example, when one batch is close to one end of the furnace body 1 and the other batch is close to the other end of the furnace body 1), the position of the baffle plate assembly 9 on the transverse plate 10 is changed, so that the baffle plate assembly 9 can block the steel plate at different positions of the heating furnace, and the application range is enlarged.

Further, in this embodiment, the connection assembly is a connection member such as a bolt or a screw. Still be provided with stand 8 between diaphragm 10 and the furnace body 1, diaphragm 10 sets up at the top of stand 8, and stand 8 is connected with furnace body 1.

Preferably, in the embodiment, a plurality of grooves with downward openings are formed in the shell wall of the shell 2, a plurality of grooves with upward openings are formed in the furnace wall of the heating furnace, and the grooves in the shell wall of the shell 2 are aligned with the grooves in the furnace wall of the heating furnace to form a closed circle; the transmission roller 7 is sleeved with a bearing which is arranged in a closed circle; the outside of bearing still is provided with the sprocket, connects through the sprocket between a plurality of transmission roller 7 and the chain that sets up on the sprocket, and drive assembly is connected with the chain transmission. In this embodiment, a closed circle is formed by a groove formed in the furnace wall of the heating furnace and a groove formed in the wall of the shell 2, the outer ring of the bearing is abutted against the inner wall of the closed circle, and the inner ring of the bearing is fixedly connected with the periphery of the conveying roller 7.

Further, in this embodiment, heat-insulating cotton 12 is further disposed between the recess on the wall of the housing 2 and the recess on the wall of the heating furnace, and the purpose of the heat-insulating cotton 12 is to prevent heat in the heating chamber from escaping outwards through the gap of the recess. Further, a layer of heat insulation cotton 12 is arranged in the shell 2 and the furnace body 1.

Preferably, as shown in fig. 4 and 5, the heating assembly 11 comprises a corundum tube 1102, a resistance wire 1103, a ceramic ring 1104 and a lead-out rod 1101, wherein the resistance wire 1103 is wound on the outer peripheral surface of the corundum tube 1102, the corundum tube 1102 is provided with a through hole, and two ends of the resistance wire 1103 penetrate through the through hole and enter the corundum tube 1102; the ceramic rings 1104 are arranged at two inner ends of the corundum tube 1102, the number of the extraction rods 1101 is two, the two extraction rods 1101 are respectively arranged in the two ceramic rings 1104 at two ends of the corundum tube 1102 in a penetrating way, and the two extraction rods 1101 are connected with two ends of the resistance wire 1103. The other end of the stub 1101 remote from the resistance wire 1103 penetrates the wall of the housing 2 and a nut is provided at the other end penetrating the wall. In this embodiment, the stub 1101 penetrates the wall of the housing 2 and a fastening connection such as a washer is also provided between the nut and the wall of the housing 2. A cable is connected to the extension rod 1101, and the resistance wire 1103 is energized to generate heat. Further, in order to ensure the safety of operators, the other end of the leading-out rod penetrating out of the shell 2 is covered with a protective cover 6, and the protective cover 6 is arranged on the outer wall of the shell 2 so as to avoid electric shock of the operators.

Preferably, as shown in fig. 1, a plurality of thermocouples 4 are further arranged at the top of the casing 2, and the thermocouples 4 are in communication connection with the electric cabinet 3 and are used for detecting the temperature in the heating cavity. Further, in the embodiment, the furnace body 1 is divided into a first heating zone, a second heating zone and a third heating zone, and the difference between the first heating zone, the second heating zone and the third heating zone is that the number of heating components 11 arranged in each zone is different, and the temperatures of the first heating zone, the second heating zone and the third heating zone can be adjusted by changing the number of the heating components 11 in different zones, so that the process requirements of annealing, normalizing, tempering and the like in heat treatment are met.

Preferably, as shown in fig. 1, the side wall of the housing 2 is further provided with a plurality of observation windows 5, and the observation windows 5 are used for observing the working process inside the heating cavity, for example: whether the conveying roller 7 rotates, whether the heating assembly 11 heats, and the like.

Preferably, in this embodiment, the heating furnace further includes an external stand (not shown in the drawings), and a lifting assembly is further disposed between the external stand and the housing 2, and the lifting assembly is used for driving the housing 2 to lift. The lifting assembly is arranged in the application, and the lifting assembly has the effect that when the conveying roller 7 is required to be replaced and maintained and the heating assembly 11 is required to be overhauled and maintained, the shell 2 can be lifted up to be replaced by a person conveniently.

The utility model relates to a material blocking mechanism of a heating furnace, which has the following working principle:

firstly, an operator sets a temperature parameter in the furnace body 1 through the electric cabinet 3, the resistance wire 1103 is electrified, the resistance wire 1103 heats, the temperature in the heating cavity rises, and the thermocouple 4 monitors the temperature in the heating cavity at any time in the heating process. When the thermocouple 4 monitors that the temperature in the heating cavity reaches the set expected temperature parameter, the thermocouple 4 sends information to the electric control box 3, the electric control box 3 receives the information and cuts off the power on of the resistance wire 1103, and the on-off of the resistance wire 1103 is repeatedly controlled in this way, so that the temperature in the heating cavity is ensured to reach a required value. In addition, the temperature in the heating chamber can also be adjusted by controlling the amount of energizing of the resistive wire 1103. The operator fastens the two baffles 901 at the end of the baffle assembly 9 at the proper positions on the cross plate 10 through the baffle assembly connection holes 903, the cross plate connection holes 1001, and the connection assembly according to the specification and size of the steel.

Secondly, when the thermocouple 4 monitors that the temperature in the heating cavity reaches the expected temperature, the thermocouple 4 sends information to the electric cabinet 3, the electric cabinet 3 receives the information and then controls the driving assembly to work, and the driving assembly drives the transmission roller 7 to rotate through the chain wheel and the chain.

When the transmission roller 7 rotates, steel enters the furnace body 1 from the furnace inlet, the steel moves to the furnace outlet under the drive of the transmission roller 7 of the furnace body 1, and the steel is heated by the heat emitted by the resistance wire 1103 in the transmission process of the steel in the furnace body 1, so that the expected heat treatment requirement is met.

Then, when the steel flows out from the outlet, the end of the steel is abutted with the end of the baffle 901, and the baffle assembly 9 absorbs and counteracts the power carried by the steel in the heating furnace in a transmission manner, so that the phenomenon that the positions of the steel are different due to the fact that the steel moves forward again by virtue of the inertia of the steel when the transmission is stopped is avoided, the stationary positions of the steel after flowing out from the outlet are basically the same, the positions of the steel after flowing out from the outlet are basically the same, and the steel is convenient to carry by a follow-up grabbing and carrying mechanism.

According to the material blocking mechanism of the heating furnace, when the size specification of steel materials changes, an operator can adjust the position of the baffle 901 on the connecting rod 902 through the baffle through hole 905, the connecting rod through hole 904 and the connecting component arranged between the baffle through hole 905 and the connecting rod through hole 904, and can also adjust the position of the baffle 9 on the transverse plate 10 through the baffle component connecting hole 903, the transverse plate connecting hole 1001 and the connecting component arranged between the baffle through hole 903 and the transverse plate connecting hole 1001, so that the blocking effect on steel materials with different size specifications is realized, the position replacement is simple and convenient, the replacement method is quick, and the replacement efficiency is high.

According to the utility model, four baffles 901 are integrally connected through the connecting rods 902, the baffle assembly connecting holes 903 are formed in the two baffles 901 at the two ends, the transverse plates 10 are provided with the plurality of transverse plate connecting holes 1001, when the positions of the baffle assemblies 9 are required to be switched, only the connecting assemblies at the two ends of the baffle assemblies 9 are required to be dismantled, and then the integral baffle assemblies 9 are fastened to the transverse plate connecting holes 1001 at different positions, so that the rapid switching of the positions of the baffles 901 is realized, the time and the labor are saved, the replacement is convenient and quick, and the replacement efficiency is high.

In conclusion, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (10)

1. A material blocking mechanism of a heating furnace, which is applied to the heating furnace in the metallurgical industry; the heating furnace comprises a furnace body (1); the method is characterized in that: one end of the furnace body (1) is provided with a furnace inlet, the other end of the furnace body is provided with a furnace outlet, and the material blocking mechanism is arranged at the outer side of the furnace outlet; the material blocking mechanism comprises a transverse plate (10), a baffle plate assembly (9) and a connecting assembly, wherein the transverse plate (10) is arranged on the furnace body (1), the baffle plate assembly (9) is fastened on the transverse plate (10) through the connecting assembly, and the baffle plate assembly (9) is used for blocking materials.

2. The dam mechanism of a heating furnace according to claim 1, wherein: the heating furnace further comprises a shell (2), a transmission roller (7), a driving assembly, a heating assembly (11) and an electric cabinet (3), wherein the shell (2) is arranged on the upper side of the furnace body (1), and an inner cavity enclosed by the shell (2) and the furnace body (1) forms a heating cavity; the conveying roller (7) is rotatably arranged in the furnace body (1), the end part of the heating component (11) is connected with the shell (2), the electric cabinet (3) is arranged outside the shell (2), and the electric cabinet (3) is connected with the driving component and the heating component (11) in a communication way.

3. The dam mechanism of a heating furnace according to claim 1, wherein: baffle subassembly (9) are including a plurality of baffle (901), and a plurality of baffle (901) are connected as an organic wholely through connecting rod (902), baffle through-hole (905) have been seted up on baffle (901), a plurality of connecting rod through-hole (904) have been seted up on connecting rod (902), baffle through-hole (905) can align and through the coupling assembling fastening connection that sets up in baffle through-hole (905), connecting rod through-hole (904) two with different connecting rod through-hole (904).

4. A dam mechanism for a heating furnace as set forth in claim 3, wherein: baffle subassembly connecting hole (903) have still been seted up on two baffles (901) of baffle subassembly (9) tip, a plurality of diaphragm connecting hole (1001) have been seted up on diaphragm (10), baffle subassembly connecting hole (903) can align and pass through the coupling assembling fastening connection between baffle subassembly connecting hole (903), diaphragm connecting hole (1001) two with different diaphragm connecting hole (1001).

5. The dam mechanism of a heating furnace according to claim 2, wherein: a plurality of grooves with downward openings are formed in the shell wall of the shell (2), a plurality of grooves with upward openings are formed in the furnace wall of the heating furnace, and the grooves in the shell wall of the shell (2) are aligned with the grooves in the furnace wall of the heating furnace to form a closed circle; a bearing is sleeved on the transmission roller (7), and the bearing is placed in the closed circle; the outside of bearing still is provided with the sprocket, and a plurality of transmission roller (7) are connected through the sprocket to and the chain that sets up on the sprocket, drive assembly is connected with the chain transmission.

6. The dam mechanism of a heating furnace according to claim 5, wherein: and heat preservation cotton (12) is also arranged between the groove on the shell wall of the shell (2) and the groove on the furnace wall of the heating furnace.

7. The dam mechanism of a heating furnace according to claim 2, wherein: the heating assembly (11) comprises a corundum tube (1102), a resistance wire (1103), a ceramic ring (1104) and a leading-out rod (1101), wherein the resistance wire (1103) is wound on the outer peripheral surface of the corundum tube (1102), through holes are formed in the corundum tube (1102), and two ends of the resistance wire (1103) penetrate through the through holes and enter the corundum tube (1102); the ceramic rings (1104) are arranged at two ends of the inside of the corundum tube (1102), the number of the extraction rods (1101) is two, the two ceramic rings (1104) are respectively arranged in the two ends of the corundum tube (1102) in a penetrating way, and one end of each extraction rod (1101) is connected with the end part of the resistance wire (1103); the other end part of the extraction rod (1101) far away from the resistance wire (1103) penetrates through the shell wall of the shell (2) and a nut is arranged at the other end penetrating out of the shell wall.

8. The dam mechanism of a heating furnace according to claim 2, wherein: the top of shell (2) still is provided with a plurality of thermocouple (4), thermocouple (4) are connected with electric cabinet (3) communication for detect the temperature in the heating chamber.

9. The dam mechanism of a heating furnace according to claim 2, wherein: the side wall of the shell (2) is also provided with a plurality of observation windows (5).

10. The dam mechanism of a heating furnace according to claim 1, wherein: the heating furnace further comprises an outer vertical frame, and a lifting assembly is further arranged between the outer vertical frame and the shell (2) and used for driving the shell (2) to lift.