CN212585448U

CN212585448U - Vacuum atmosphere heat treatment furnace

Info

Publication number: CN212585448U
Application number: CN202020931776.6U
Authority: CN
Inventors: 李海军; 孙鸣高
Original assignee: Luoyang Shenhua Heating Technology Co ltd
Current assignee: Luoyang Shenhua Heating Technology Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-02-23
Anticipated expiration: 2030-05-28

Abstract

The utility model belongs to the technical field of box-type furnaces, in particular to a vacuum atmosphere heat treatment furnace, which comprises a furnace body, a furnace liner, an upper cover, a furnace door and a cooling device, wherein the furnace body comprises an outer shell, an inner shell and a furnace chamber which are arranged from outside to inside in sequence, a transversely-inserted heater and a vertically-inserted heater are arranged in the furnace chamber, the furnace liner is of a closed structure with an open front end, the furnace liner is horizontally arranged in the middle of the furnace chamber, the front end of the furnace liner extends out of the furnace chamber and is matched with the furnace door, a fiber board for heat preservation is arranged at the periphery of the furnace liner, cooling devices are correspondingly arranged at the periphery of the front end of the furnace liner and on the furnace door respectively, an exhaust pipe is arranged on the furnace door, an intake pipe penetrating through the wall of the furnace liner is arranged at the front end of the furnace liner, one end of the intake pipe is arranged outside the furnace body, the other end of the intake pipe, the heat preservation effect is improved, and the temperature raising speed and the heat preservation effect of the hearth are improved.

Description

Vacuum atmosphere heat treatment furnace

Technical Field

The utility model belongs to the technical field of box stove, concretely relates to vacuum atmosphere heat treatment furnace.

Background

Atmosphere stove, the wide application is in production, the experiment in fields such as metallurgy, electron, glass, refractory material, is the novel heat treatment device that vacuum technique and heat treatment technique combine, and current box atmosphere furnace gas tightness is relatively poor, leads to letting in the effect of complementary gas relatively poor, and the during operation furnace courage internal heating work piece easily produces the reaction with external gas under high temperature, and in addition, current atmosphere furnace structure leads to furnace temperature to carry the temperature rate low, and the effect deviation keeps warm.

Disclosure of Invention

In order to solve the problem in the background art, the utility model discloses a vacuum atmosphere heat treatment furnace, including furnace body, stove courage, furnace gate and water cooling plant, adopt independent stove courage, reduce the heat exchange, avoid the work piece oxidation, optimize the furnace heat preservation, improve furnace and carry temperature rate and heat preservation effect.

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

a vacuum atmosphere heat treatment furnace comprises a furnace body, a furnace liner, an upper cover, a furnace door and a cooling device, wherein the furnace door is arranged at the front end of the furnace body, the furnace body comprises an outer shell, an inner shell and a furnace chamber which are sequentially arranged from outside to inside, the tops of the outer shell and the inner shell are both of an open structure, the upper cover covers an open end at the top of the outer shell, a transversely-inserted heater and a vertically-inserted heater are arranged in the furnace chamber, the furnace liner is of a closed structure with an open front end, the furnace liner is horizontally arranged in the middle of the furnace chamber, the front end of the furnace liner extends out of the furnace chamber to be matched with the furnace door, a fiber board for heat preservation is arranged on the periphery of the furnace liner, the fiber board comprises a top fiber board arranged above the furnace liner, a rear fiber board arranged behind the furnace liner and a bottom fiber board arranged below the furnace liner, a soft felt for heat preservation is laid between the top fiber board and the inner wall of the upper cover, be equipped with the resistant firebrick that is used for supporting the stove courage in the below of stove courage, it is equipped with cooling device to correspond respectively on the periphery of stove courage front end and the furnace gate, cooling device is stove courage and furnace gate cooling, avoid stove courage and furnace gate because high temperature leads to the plastic deformation that the intensity step-down produced, be equipped with the through-hole that runs through terminal surface around the furnace gate on the furnace gate, the identical blast pipe that is provided with in the through-hole, be equipped with the intake pipe that pierces through stove courage wall at stove courage front end, the one end of intake pipe is outside the furnace body, the other.

Further, the furnace pipe is connected with the furnace door through a flange.

Furthermore, a sealing device is arranged at the position of the furnace door, which is contacted with the furnace pipe.

Furthermore, the cooling device comprises a furnace door water cooling device arranged on one side of the furnace door back to the furnace body and a furnace pipe water cooling device arranged between the furnace pipe outer connecting flange and the furnace body, and the furnace door water cooling device and the furnace pipe water cooling device are respectively cooled by circulating cold water.

Furthermore, the furnace pipe is made of stainless steel plates.

Furthermore, a reinforcing angle iron is arranged between the bottom refractory brick and the inner shell wall, and the bottom of the reinforcing angle iron is provided with a supporting section steel.

Furthermore, the furnace body is arranged on a bracket below the furnace body, and a section steel frame is arranged on the edge of the furnace body shell.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a device includes the furnace body, the stove courage, the upper cover, furnace gate and cooling device, the furnace body includes shell, inner shell and furnace that sets gradually from outside to inside, be equipped with horizontal plug heater and the vertical plug heater of vertical setting of horizontal setting in the furnace, the stove courage level sets up in the furnace middle part, adopt independent stove courage, reduce the heat exchange, avoid the work piece oxidation, the top fibreboard that is equipped with above the stove courage, the rear portion fibreboard that sets up behind the stove courage, set up the bottom fibreboard below the stove courage, lay the soft felt for the heat preservation between top fibreboard and upper cover inner wall, be equipped with the heat preservation cotton between rear portion fibreboard and inner shell rear side wall, be equipped with the resistant firebrick that is used for supporting the stove courage below the stove courage, the inside insulation material of furnace adopts the subregion installation, improve the heat preservation effect, improve furnace temperature raising rate and heat preservation effect, the furnace can only repair the damaged part without integral replacement, the service life of the furnace body is prolonged, the periphery of the front end of the furnace pipe and the furnace door are respectively and correspondingly provided with a cooling device, and the cooling devices cool the furnace pipe and the furnace door, so that the plastic deformation caused by the strength reduction of the furnace pipe and the furnace door due to high temperature is avoided.

Drawings

FIG. 1 is a schematic axial sectional view of the present invention;

in the above figures: 1-a scaffold; 2-a steel frame; 3-supporting the section steel; 4-angle iron reinforcement; 5-refractory bricks; 6-fiber board bottom; 7-heat preservation cotton; 8-rear fiber board; 9-furnace pipe; 10-soft felt; 11-a housing; 12-an inner plate; 13-upper cover; 14-an air inlet pipe; 15-a flange; 16-oven door; 17-an exhaust pipe; 18-furnace door water cooling; 19-water cooling of a furnace pipe; 20-inserting a heater transversely; 21-vertical insertion of the heater.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Combine figure 1 to explain in detail the utility model relates to a vacuum atmosphere heat treatment furnace, which comprises a furnace body, stove courage 9, upper cover 13, furnace gate 16 and cooling device, be provided with furnace gate 16 at the front end of furnace body, the furnace body includes shell 11, inner shell 12 and the furnace that sets gradually from outside to inside, the top of shell 11 and inner shell 12 all opens, upper cover 13 lid closes the top at shell 11, the louvre has been seted up on upper cover 13, transversely be equipped with horizontal plug-in heater 20 and the vertical plug-in heater 21 of vertical setting in furnace, stove courage 9 is the open airtight structure in front end, stove courage 9 level sets up in the furnace middle part, the front end of stove courage 9 stretches out furnace and coincide with furnace gate 16 and sets up, stove courage 9 material is corrosion resistant plate, independent inner bag 9, can reduce the heat exchange, and protect the atmosphere that lets in, be equipped with the fibreboard for the heat preservation in the periphery of stove courage 9, the fibreboard is including setting up the top fibreboard in stove cour, A rear fiber board 8 arranged at the rear of the furnace pipe 9 and a bottom fiber board 6 arranged below the furnace pipe 9, a heat-insulating soft felt 10 is laid between the top fiber board and the inner wall of an upper cover 13, heat-insulating cotton 7 is arranged between the rear fiber board 8 and the rear side wall of an inner shell 12, a refractory brick 5 for supporting the furnace pipe 9 is arranged below the furnace pipe 9, the heat-insulating material in the furnace chamber is installed in a subarea mode, the heat-insulating effect is improved, the temperature raising rate and the heat-insulating effect of the furnace chamber are improved, meanwhile, when the furnace lining in the furnace chamber needs to be maintained, only the damaged part can be repaired, the whole replacement is not needed, the service life of the furnace body is prolonged, cooling devices are respectively and correspondingly arranged on the periphery of the front end of the furnace pipe 9 and the furnace door 16, the plastic deformation caused by the low strength due to high temperature is avoided, a through hole, the furnace pipe 9 is vacuumized through the exhaust pipe 17, a vacuum state is formed in the furnace pipe 9, the air inlet pipe 14 penetrating through the wall of the furnace pipe 9 is arranged at the front end of the furnace pipe 9, one end of the air inlet pipe 14 is arranged outside the furnace body, the other end of the air inlet pipe 14 extends into the middle of the rear end of the furnace pipe 9, and auxiliary atmosphere rushes into the furnace body through the air inlet pipe 14 to protect atmosphere.

The furnace pipe 9 and the furnace door 16 are connected through a flange 15, a sealing device is arranged on the furnace door 16 and in contact with the furnace pipe 9, the sealing device is arranged to improve the air tightness in the furnace pipe 9, reduce heat exchange and avoid workpiece oxidation, the cooling device comprises a furnace door water cooling device 18 and a furnace pipe water cooling device 19, the furnace door water cooling device 18 and the furnace pipe water cooling device 19 are arranged on one side, back to the furnace body, of the furnace door 16, the furnace pipe water cooling device 19 is arranged between the furnace pipe 9 and the furnace body, and circulating cold water is adopted for cooling respectively for the furnace door water cooling device 18 and the.

Be equipped with between the resistant firebrick 5 of bottom and the 12 walls of inner shell and strengthen angle bar 4, strengthen the angle bar 4 bottom and be equipped with support shaped steel 3, the furnace body sets up on support 1 of its below, is equipped with shaped steel frame 2 at the edge of furnace body shell 11, strengthens angle bar 4, supports the setting improvement furnace body's bulk strength of shaped steel 3 and shaped steel frame 2.

The utility model discloses the working process is as follows:

implement the utility model discloses the time, open furnace gate 16, put into furnace pipe 9 with the material, close furnace gate 16, connect through flange 15 between furnace pipe 9 and the furnace gate 16, through blast pipe 17 to furnace pipe 9 evacuation, form vacuum state in the messenger furnace pipe 9 and/or through intake pipe 14 to the furnace body in rush into auxiliary atmosphere, carry out the atmosphere protection, violently insert heater 20 in the furnace and insert heater 21 and begin the work heating vertically, material processing accomplishes the back in the furnace pipe 9, open the recirculated cooling water among furnace gate water cooling device 18 and the furnace pipe water cooling device 19, for furnace pipe 9 and the cooling of furnace gate 16, after the temperature drops to suitable temperature in the furnace, open furnace gate 16 and take out the material of handling in the furnace pipe 9.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for the convenience of description of the present invention and for simplicity of description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the present invention should not be construed as being limited thereto, and it should be noted that the terms "mounted" and "connected" should be interpreted broadly, for example, as being able to be fixedly connected, detachably connected, or integrally formed, mechanically connected, or indirectly connected through an intermediate medium, and the specific meaning of the terms in the present application can be understood through specific situations.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A vacuum atmosphere heat treatment furnace comprises a furnace body and a furnace pipe, and is characterized in that: the furnace comprises an outer shell, an inner shell and a hearth which are sequentially arranged from outside to inside, the tops of the outer shell and the inner shell are both of an open structure, the upper cover covers the open end at the top of the outer shell, a transversely-inserted heater and a vertically-inserted heater which are vertically arranged are arranged in the hearth, a furnace liner is of a closed structure with an open front end, the furnace liner is horizontally arranged in the middle of the hearth, the front end of the furnace liner extends out of the hearth to be matched with the furnace door, a fiber board for heat preservation is arranged on the periphery of the furnace liner, the fiber board comprises a top fiber board arranged above the furnace liner, a rear fiber board arranged behind the furnace liner and a bottom fiber board arranged below the furnace liner, a soft felt for heat preservation is laid between the top fiber board and the inner wall of the upper cover, heat preservation cotton is arranged between the rear fiber board and the rear side wall of the inner shell, a refractory brick for supporting the furnace liner is arranged below the furnace liner, the periphery of the front end of the furnace pipe and the furnace door are respectively and correspondingly provided with a cooling device, the furnace door is provided with a through hole penetrating through the front end surface and the rear end surface of the furnace door, an exhaust pipe is arranged in the through hole in an inosculating manner, the front end of the furnace pipe is provided with an air inlet pipe penetrating through the wall of the furnace pipe, one end of the air inlet pipe is arranged outside the furnace body, and the other end of the air inlet pipe extends into the middle.

2. The vacuum atmosphere heat-treating furnace according to claim 1, wherein: the furnace pipe is connected with the furnace door through a flange.

3. The vacuum atmosphere heat-treating furnace according to claim 1, wherein: a sealing device is arranged at the position of the furnace door, which is contacted with the furnace pipe.

4. The vacuum atmosphere heat-treating furnace according to claim 1, wherein: the cooling device comprises a furnace door water cooling device arranged on one side of the furnace door back to the furnace body and a furnace pipe water cooling device arranged between the furnace pipe outer connecting flange and the furnace body, and the furnace door water cooling device and the furnace pipe water cooling device are respectively cooled by circulating cold water.

5. The vacuum atmosphere heat-treating furnace according to claim 1, wherein: the furnace pipe is made of stainless steel plates.

6. The vacuum atmosphere heat-treating furnace according to claim 1, wherein: and a reinforcing angle iron is arranged between the bottom refractory brick and the inner shell wall, and the bottom of the reinforcing angle iron is provided with supporting section steel.

7. The vacuum atmosphere heat-treating furnace according to claim 1, wherein: the furnace body is arranged on the bracket below the furnace body, and the edge of the furnace body shell is provided with a section steel frame.