CN217303557U - Bell-type furnace - Google Patents

Abstract

The utility model provides a bell-type furnace, which relates to the technical field of metal smelting equipment. The bell-type furnace comprises a furnace platform, a reaction bomb and a heating cover; the furnace is characterized in that a pipeline group is arranged on the furnace platform, the reaction bomb is detachably arranged on the furnace platform and is covered and arranged inside the reaction bomb, the pipeline group is communicated with the inside of the reaction bomb, the heating cover is detachably arranged on the furnace platform and covered and arranged on the outer side of the reaction bomb, the reaction bomb is used for providing a material reaction site, and the heating cover is used for heating the reaction bomb. Compared with a pit furnace, the bell-type furnace has the advantages that the pipeline group is changed into the mode of being arranged on the furnace platform from the top end of the reaction bomb, the reaction bomb is installed or hung out from the furnace platform, the pipeline group cannot interfere with the installation or hanging-out process of the reaction bomb, accordingly, potential safety hazards are greatly reduced, the pipeline group does not need to be manually arranged, the bell-type furnace can achieve full-automatic operation, and production efficiency is greatly improved.

Description

Bell-type furnace

Technical Field

The utility model relates to a metal smelting equipment technical field especially relates to a bell-type furnace.

Background

Tantalum materials have important application in high and new technical fields such as electronics, metallurgy, steel, chemical industry, hard alloy, atomic energy, superconducting technology, automotive electronics, aerospace, medical health and scientific research, wherein the capacitor industry is always the largest application field of tantalum, and in recent years, with the rapid development of computer and electronic industries, the worldwide tantalum industry rapidly increases by more than 12% every year, so that the production and purification of tantalum are particularly important.

In the production processes of hydrogenation, oxygen reduction, passivation, dehydrogenation and the like of tantalum materials, a shaft furnace is generally used for processing in a traditional mode; the heating furnace is a vertical fixed furnace body, the reaction bomb is loaded into the hearth from the upper opening, and the top of the reaction bomb is provided with a vacuum tube, a water tube, an air tube, a wire, a cable and other parts; when the reaction bomb is hung into or out of the hearth, parts such as a vacuum tube, a water tube and the like on the top end of the reaction bomb seriously influence safe operation and use, great potential safety hazards exist, and the parts such as the vacuum tube, the water tube and the like need to be manually arranged, so that the heating furnace cannot realize automatic operation.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the application provides a bell-type furnace.

The application provides the following technical scheme:

a bell-type furnace comprises a furnace platform, a reaction bomb and a heating cover; the furnace is characterized in that a pipeline group is arranged on the furnace platform, the reaction bomb is detachably arranged on the furnace platform and is covered and arranged inside the reaction bomb, the pipeline group is communicated with the inside of the reaction bomb, the heating cover is detachably arranged on the furnace platform and covered and arranged on the outer side of the reaction bomb, the reaction bomb is used for providing a material reaction site, and the heating cover is used for heating the reaction bomb.

In a possible implementation mode, the bell-type furnace further comprises a suspension arm, lifting lugs matched with the suspension arm are arranged on the heating cover and the reaction bomb, and the suspension arm is matched with the lifting lugs to install the heating cover or the reaction bomb on the furnace platform.

In one possible embodiment, the bell-type furnace further comprises a vacuum machine and an air filtration tank, the vacuum machine is connected with the pipeline set through the air filtration tank, the vacuum machine is used for extracting air in the reaction bomb, and the air filtration tank is used for filtering the extracted air.

In a possible implementation mode, the bell-type furnace further comprises a hydraulic station, a hydraulic oil cylinder is arranged on the furnace platform, the hydraulic station is connected with the hydraulic oil cylinder, and the hydraulic station is used for controlling the hydraulic oil cylinder to press the reaction bomb on the furnace platform.

In a possible embodiment, heating elements are arranged in the heating cover, and the heating elements are uniformly distributed on the inner wall of the heating cover.

In a possible embodiment, the bell-type furnace further comprises a cooling jacket detachably mounted on the hearth, the cooling jacket being used to cool the reaction bomb.

In a possible implementation mode, the cooling cover comprises an air cooling assembly and a water cooling assembly, and when the air cooling assembly reduces the temperature of the reaction bomb to a preset temperature, the water cooling assembly reduces the temperature of the reaction bomb.

In a possible embodiment, the air cooling assembly comprises a cold air cylinder, and the cold air cylinder is of a sandwich water jacket structure.

In a possible embodiment, the bell-type furnace further comprises a control cabinet, the control cabinet is connected with the furnace platform, and the control cabinet is used for controlling the furnace platform.

In a possible embodiment, the bell type furnace further comprises a cleaning assembly, the cleaning assembly is arranged on the reaction bomb, and the cleaning assembly is used for cleaning sundries in the reaction bomb.

The utility model discloses beneficial effect of embodiment:

the bell-type furnace that this embodiment provided, through will adding the reaction bomb and heating mantle detachably installation with the stove bench, set up the pipeline group on the stove bench, when the reaction bomb was installed in the stove bench, the pipeline group was located inside the reaction bomb to with the inside intercommunication of reaction bomb, the heating mantle cover was located the reaction bomb outside and can be heated the reaction bomb. Compared with a pit furnace, the bell-type furnace has the advantages that the pipeline group is changed into the mode of being arranged on the furnace platform from the top end of the reaction bomb, the reaction bomb is installed or hung out from the furnace platform, the pipeline group cannot interfere with the installation or hanging-out process of the reaction bomb, accordingly, potential safety hazards are greatly reduced, the pipeline group does not need to be manually arranged, the bell-type furnace can achieve full-automatic operation, and production efficiency is greatly improved.

In order to make the aforementioned and other objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view showing the structure of a bell type furnace according to the present embodiment;

FIG. 2 is a plan view showing a bell type furnace provided in the present embodiment;

FIG. 3 is a schematic structural view showing a hearth of the bell type furnace provided in the present embodiment;

FIG. 4 is a schematic structural view showing a heating mantle of the bell type furnace according to the present embodiment;

FIG. 5 is a schematic structural view showing a cooling jacket of the bell type furnace according to the present embodiment.

Description of the main element symbols:

100-reaction bomb; 110-a boom; 200-furnace platform; 210-a hydraulic oil cylinder; 220-vacuum tube; 230-a gas-filled tube; 240-exhaust pipe; 250-a material table; 300-heating cover; 310-a heating element; 320-lifting lugs; 330-furnace lining; 400-vacuum machine; 500-an air filtration tank; 600-a hydraulic station; 700-cooling jacket; 710-an air-cooled assembly; 711-cold wind cylinder; 720-water cooling component; 721-a spray pipe; 722-an electromagnetic valve; 723-high pressure water connection; 800-control cabinet; 810-gas distribution cabinet; 900-cleaning assembly.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to 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", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

Referring to fig. 1 to 4, the present embodiment provides a bell type furnace for performing heat treatment processes such as hydrogenation, deoxidation, passivation or dehydrogenation of tantalum material, which is convenient to operate, safe to produce and capable of realizing automatic operation compared to a conventional pit type furnace.

As shown in fig. 1, the bell type furnace includes a reaction bomb 100, a furnace platform 200, and a heating mantle 300, wherein the reaction bomb 100 is used for the purification reaction of tantalum material, the reaction bomb 100 and the heating mantle 300 are detachably mounted on the furnace platform 200, a pipeline set is provided on the furnace platform 200, when the reaction bomb 100 is mounted on the furnace platform 200, the reaction bomb 100 covers the pipeline set inside, the pipeline set is communicated with the interior of the reaction bomb 100, and the heating mantle 300 is sleeved outside the reaction bomb 100.

The furnace 200 is used for carrying the reaction bomb 100 and the heating cover 300, the reaction bomb 100 is used for providing a material reaction site, and the heating cover 300 is used for heating the reaction bomb 100.

In some embodiments, the tubing set includes vacuum tube 220, inflation tube 230, and exhaust tube 240. The vacuum tube 220 is used for pumping out air in the reaction bomb 100 so that the interior of the reaction bomb 100 is in a vacuum state; the gas filling tube 230 is used for filling protective gas into the reaction bomb 100; the exhaust pipe 240 is used to exhaust the shielding gas from the inside of the reaction bomb 100. The pipeline group is arranged in the furnace platform 200, wherein one end of the pipeline group penetrates out of the furnace platform 200 and is communicated with the interior of the reaction bomb 100, and the other end of the pipeline group is communicated with external equipment. In other embodiments, the tube set may further include a water tube, a line tube, and the like.

Referring to fig. 2 and 3, the bell-type furnace further comprises a hydraulic station 600, a hydraulic cylinder 210 is arranged on the furnace platform 200, the hydraulic station 600 is connected with the hydraulic cylinder 210, and the hydraulic station 600 is used for controlling the hydraulic cylinder 210 to press the reaction bomb 100 on the furnace platform 200.

The hydraulic oil cylinder 210 is arranged on the outer side of the heating cover 300 to prevent the hydraulic oil cylinder 210 from being damaged when the heating cover 300 heats the reaction bomb 100, so that the service life of the hydraulic oil cylinder 210 and the working reliability are ensured.

When the reaction bomb 100 with the tantalum material is used, the reaction bomb 100 with the tantalum material is installed on the furnace platform 200, the hydraulic oil cylinder 210 is enabled to tightly press the reaction bomb 100 on the furnace platform 200 through controlling the hydraulic station 600, and the danger caused by the fact that the reaction bomb 100 is separated from the furnace platform 200 when the tantalum material in the reaction bomb 100 is subjected to relevant technological reaction is avoided.

In some embodiments, a material table 250 is disposed on the furnace platform 200, and the material table 250 is used for carrying the material so that the material can be stably processed inside the reaction bomb 100.

As shown in fig. 1 and 4, the heating mantle 300 is provided with heating elements 310, the heating elements 310 are used for heating the reactive bomb 100, and the heating elements 310 are uniformly distributed on the inner wall of the heating mantle 300.

In some embodiments, the furnace lining 330 is arranged inside the heating cover 300, the furnace lining 330 is made of special materials, and the furnace lining 330 is fixed inside the heating cover 300, so that the furnace lining is firm and durable, cannot be punctured by high temperature in long-term normal use, and cannot become brittle and fall off.

Referring to fig. 2, a vacuum machine 400 is further disposed on the bell-type furnace, the vacuum machine 400 is connected to the vacuum tube 220, and the vacuum machine 400 can draw air from the inside of the reaction bomb 100 through the vacuum tube 220, so that a vacuum environment is formed in the reaction bomb 100, thereby facilitating the processing of the tantalum material.

In some embodiments, the bell jar furnace further comprises an air filter canister 500, the vacuum machine 400 being connected to the vacuum tube via the air filter canister 500, the air filter canister 500 being used to filter air drawn from the interior of the reaction bomb.

When the bell-type furnace is used, the reaction bomb 100 is firstly installed on the furnace platform 200, then the heating cover 300 is installed on the furnace platform 200, the vacuum machine 400 extracts air in the reaction bomb 100, so that the interior of the reaction bomb 100 is in a vacuum state, the influence of impurities in the air on the purity of tantalum ore is reduced, the heating element 310 is started to heat the reaction bomb 100, and the relevant process atmosphere in the reaction bomb 100 is in full contact and reaction with the tantalum material in the reaction bomb 100 in the vacuum state, so that different heat treatment processes of the tantalum material are realized.

In some specific embodiments, the reaction bomb 100 and the heating cover 300 are circular structures, the reaction bomb 100 is made of special stainless steel materials and comprises a spherical seal head, a tank body flange, a guide sleeve and the like, the tank body is polished before welding to enable the inner wall of the tank body to be a mirror surface, the welding position is smooth and consistent, welding seams are subjected to acid pickling and grinding treatment, the welding process is fine, the welding seams are uniform and full, cold welding and missing welding are avoided, crack slag inclusion is avoided, good sealing is ensured, and the manufactured reaction bomb 100 is subjected to cleaning and acid pickling treatment and is free of welding slag and dirty residues; the inner surface and the outer surface of the reaction bomb 100 are ensured to be mirror surfaces, and unnecessary impurities are prevented from being mixed in the purified tantalum material.

The shell of the heating cover 300 is made of stainless steel, argon arc welding is performed for forming, and welding seams are evenly and fully processed by acid pickling and polishing; the surface of heating mantle 300 adopts the polishing to handle, and the colour is unanimous, and the unusual unsmooth of no exception, the heating mantle 300 is inside to use the enhancement of internal stay shaped steel, guarantees that long-term use does not have the corruption and warp.

Of course, it is understood that the reaction bomb 100 and the heating jacket 300 may have other structures, and only need to satisfy the heat treatment process of tantalum material and be adapted to the furnace platform 200; the reaction bomb 100 may also be made of other materials; the housing of the heating jacket 300 may also be made of other materials.

The bell-type furnace provided by the embodiment is characterized in that the reaction bomb 100 and the heating cover 300 are detachably arranged on the furnace platform 200, the furnace platform 200 is provided with a pipeline group, when the reaction bomb 100 is arranged on the furnace platform 200, the pipeline group is arranged inside the reaction bomb 100 and is communicated with the inside of the reaction bomb 100, and the heating cover 300 is sleeved outside the reaction bomb 100 and can heat the reaction bomb 100. Compared with a pit furnace, the bell-type furnace has the advantages that the pipeline group is changed from the top end of the reaction bomb to the top end of the furnace platform 200, the reaction bomb 100 is installed or lifted out of the furnace platform 200, the pipeline group cannot interfere with the installation or lifting-out process of the reaction bomb 100, accordingly, potential safety hazards are greatly reduced, the pipeline group is not required to be manually arranged, the bell-type furnace can realize full-automatic operation, and production efficiency is greatly improved.

Example two

Referring to fig. 1 and 4, an embodiment provides a bell type furnace, and the bell type furnace provided in this embodiment is an improvement of some structures on the basis of the bell type furnace provided in the first embodiment, which is specifically improved as follows compared with the bell type furnace provided in the first embodiment:

the bell-type furnace also comprises a suspension arm 110, lifting lugs 320 are arranged on the heating mantle 300 and the reaction bomb 100, and the suspension arm 110 is matched with the lifting lugs 320, so that the heating mantle 300 or the reaction bomb 100 can be lifted from the furnace platform 200, or the heating mantle 300 or the reaction bomb 100 can be installed on the furnace platform 200.

The lifting eye 320 is arranged at the top end of the heating mantle 300 or the reaction bomb 100, the suspension arm 110 is provided with a hanging strip and a lifting hook, one end of the hanging strip is connected with the suspension arm 110, the other end of the hanging strip is connected with the lifting hook, the suspension arm 110 can control the lifting hook to be connected with the lifting eye 320, and therefore the heating mantle 300 or the reaction bomb 100 is controlled to be lifted from the furnace platform 200.

In some embodiments, three lifting eyes are provided on the heating mantle 300 or the reaction bomb 100, three corresponding hanging straps and three hooks are provided on the suspension arm 110, and the suspension arm 110 is lifted by a three-point lifting method to ensure that the heating mantle 300 or the reaction bomb 100 is lifted and operated smoothly.

In other embodiments, the heating mantle 300 or the reaction bomb 100 and the suspension arm 110 can be hoisted by other hoisting methods.

When the bell type furnace provided by this embodiment is used, the suspension arm 110 is engaged with the reaction bomb 100 and the lifting lug 320 of the heating mantle 300, so that the reaction bomb 100 is firstly mounted on the furnace platform 200, and then the heating mantle 300 is mounted on the furnace platform 200, so that the heating mantle 300 is sleeved on the outer side of the reaction bomb 100. After the reaction of the material in the reaction bomb 100 is completed, the suspension arm 110 first lifts the heating mantle 300 and moves the heating mantle 300 to other areas, and then lifts the reaction bomb 100 from the furnace platform 200, so as to take out the reacted material.

EXAMPLE III

Referring to fig. 2 and fig. 5, an embodiment provides a bell type furnace, and the bell type furnace provided in this embodiment is an improvement of some structures on the basis of the bell type furnace provided in the first embodiment or the second embodiment, which is more specifically improved than the bell type furnace provided in the first embodiment or the second embodiment as follows:

in the bell type furnace provided in the present embodiment, the bell type furnace further includes a cooling jacket 700, the cooling jacket 700 being detachably mounted to the hearth 200, the cooling jacket 700 being used to cool the reaction bomb 100.

After the reaction of the tantalum material in the reaction bomb 100 is completed, the heating mantle 300 is detached from the furnace platform 200 by using the suspension arm 110, the cooling mantle 700 is installed on the furnace platform 200 by using the suspension arm 110, and the cooling mantle 700 cools the reaction bomb 100.

Further, the cooling jacket 700 includes an air-cooling unit 710 and a water-cooling unit 720, and when the air-cooling unit 710 reduces the temperature of the reaction bomb 100 to a predetermined temperature, the water-cooling unit 720 reduces the temperature of the reaction bomb 100.

The air cooling assembly 710 comprises a cold air cylinder 711, the cold air cylinder 711 is of a sandwich water jacket structure, a spiral guide plate and a reinforcing plate are arranged inside the cold air cylinder 711, the cold air cylinder 711 is guaranteed to be pressure-resistant and not to deform, the size of the cold air cylinder 711 is matched with that of the reaction bomb 100, a stainless steel pipe with small holes is arranged at the upper part of the cold air cylinder 711, the reaction bomb 100 is cooled by water spraying, an induced draft fan is matched with an interface of the cold air cylinder 711, frequency conversion is adjustable, the cold air cylinder 711 is hung and installed on the furnace platform 200 after the heating cover 300 is removed, an air cooling program is started, when the temperature is reduced to a water cooling set temperature, water spraying cooling is carried out, and water spraying is stopped after the temperature reaches a discharging set temperature.

The cooling air cylinder 711 is cylindrical, air enters from the top and exhausts from the bottom during air cooling, the high-pressure water joint 723 of the circulating water pipe 721 at the upper part of the cooling air cylinder 711 is connected with an external water pipe during water cooling, water is sprayed under the control of the electromagnetic valve 722 to cool the reaction bomb 100 and materials, and cooling water flows out from the lower part and is discharged into a preset water outlet.

The cold air duct 711 is made of stainless steel, the inner wall and the outer wall of the cold air duct are made of stainless steel plates, a water inlet of the interlayer water jacket structure is arranged at the bottom, and a pressure reducing valve is arranged at the water inlet to ensure that the pressure does not exceed a set value.

The bell-type furnace further comprises a control cabinet 800 and a gas distribution cabinet 810, the control cabinet 800 and the gas distribution cabinet 810 are connected with the furnace platform 200, and the control cabinet 800 and the gas distribution cabinet 810 are used for controlling the furnace platform 200.

The control cabinet 800 adopts the control mode of an upper industrial personal computer and a PLC, the system configuration supports both automatic operation and manual operation, heating and cooling curves can be set on the upper industrial personal computer, and production logs can be generated for analysis and query. The upper industrial control computer can store a process curve, can call and modify the prestored curve according to the authority, can display the current working condition of the equipment in due time, has the alarm function of abnormal temperature and vacuum degree, sets different authorities for management, process, operation and the like according to the requirements, and the authority content meets the use requirement.

The bell-type furnace also comprises a cleaning assembly 900, the cleaning assembly 900 is arranged on the reaction bomb 100, and the cleaning assembly 900 is used for cleaning sundries in the reaction bomb 100.

Of course, it is understood that the cooling jacket 700 may also contain other cooling components; the cold air duct 711 can also have other structures; the cold air duct 711 can also be made of other materials; other control components may also be selected for the bell furnace. Cooling jacket 700 includes air-cooled subassembly 710 and water-cooled subassembly 720, and a cold wind section of thick bamboo 711 is sandwich water jacket structure, and a cold wind section of thick bamboo 711 adopts the stainless steel to make, and the bell-type furnace still includes switch board 800 and gas distribution cabinet 810, and the aforesaid is only the utility model discloses an it is preferable technical scheme, it is not right the utility model discloses a technical scheme causes unnecessary restriction, contains the cooling jacket 700 of other cooling member, for a cold wind section of thick bamboo 711 of other structures, adopts a cold wind section of thick bamboo 711 of other materials preparation, chooses for use the bell-type furnace of other control members for use, all is within the protection scope the utility model discloses a.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A bell-type furnace is used for processing tantalum materials and is characterized by comprising a furnace platform, a reaction bomb and a heating cover; the furnace is characterized in that a pipeline group is arranged on the furnace platform, the reaction bomb is detachably arranged on the furnace platform and is covered and arranged inside the reaction bomb, the pipeline group is communicated with the inside of the reaction bomb, the heating cover is detachably arranged on the furnace platform and covered and arranged on the outer side of the reaction bomb, the reaction bomb is used for providing a material reaction site, and the heating cover is used for heating the reaction bomb.

2. The bell type furnace as claimed in claim 1, wherein the bell type furnace further comprises a suspension arm, the heating mantle and the reaction bomb are provided with lifting lugs matched with the suspension arm, and the suspension arm is matched with the lifting lugs to mount the heating mantle or the reaction bomb on the furnace platform.

3. The bell furnace of claim 1 further comprising a vacuum machine and an air filter canister, the vacuum machine being connected to the tube bank through the air filter canister, the vacuum machine being configured to draw air from within the reaction bomb and the air filter canister being configured to filter the drawn air.

4. The bell type furnace of claim 1 further comprising a hydraulic station, wherein the hearth is provided with a hydraulic cylinder, the hydraulic station is connected with the hydraulic cylinder, and the hydraulic station is used for controlling the hydraulic cylinder to press the reaction bomb on the hearth.

5. The bell type furnace as claimed in claim 1, wherein heating elements are provided in the heating mantle, the heating elements being evenly distributed on the inner wall of the heating mantle.

6. The bell furnace of claim 1 further comprising a cooling hood removably mounted to the hearth, the cooling hood for cooling the reaction bomb.

7. The bell furnace of claim 6 wherein the cooling hood comprises an air cooling assembly and a water cooling assembly, the water cooling assembly cooling the reaction bomb when the air cooling assembly cools the reaction bomb to a predetermined temperature.

8. The bell type furnace as defined in claim 7 wherein the air cooling assembly includes a cooling air duct having a sandwich water jacket structure.

9. The bell type furnace as claimed in claim 1 further comprising a control cabinet connected to the top for controlling the top.

10. The bell type furnace as claimed in claim 1 further comprising a cleaning assembly mounted to the reaction bomb for cleaning impurities in the reaction bomb.

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