CN214276508U

CN214276508U - Atmosphere heat treatment kiln

Info

Publication number: CN214276508U
Application number: CN202023205385.5U
Authority: CN
Inventors: 欧阳建; 彭伟; 宇文静
Original assignee: Hunan Gold Furnace Science & Technology Co ltd
Current assignee: Hunan Gold Furnace Science & Technology Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-09-24
Anticipated expiration: 2030-12-25

Abstract

The utility model discloses an atmosphere heat treatment kiln, including the furnace body that has furnace and the furnace gate that is used for switching furnace, the furnace body includes the shell and sets up in the shell and enclose into furnace's furnace wall, and furnace wall and shell enclose to close and form first thermal-insulated cavity, are equipped with on the shell with the air inlet of first thermal-insulated cavity intercommunication, and the furnace wall has the first hole that insulates against heat cavity and furnace of intercommunication. The atmosphere heat treatment kiln has the advantages of simple structure, easiness in manufacturing and assembling, low cost, low surface temperature, low energy consumption and the like.

Description

Atmosphere heat treatment kiln

Technical Field

The utility model relates to a heat treatment device technical field, concretely relates to atmosphere heat treatment kiln.

Background

The furnace body comprises a shell and a furnace lining attached in the shell, and the furnace lining is surrounded to form the hearth with an opening. The atmosphere heat treatment kiln requires that the process atmosphere can be introduced into the hearth when the hearth is closed so as to keep the concentration of the process atmosphere in the hearth within a process required range. Because the furnace lining of current heat treatment kiln is the laminating shell setting, the heat in the furnace directly passes to the shell and gives off the external environment through the furnace lining easily, leads to shell surface temperature higher, leads to the operating stability and the life of furnace body external equipment and supporting components and parts to cause adverse effect, still can lead to the energy consumption to promote simultaneously.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art existence, provide an atmosphere heat treatment kiln that simple structure, easily preparation assembly, with low costs, surface temperature are low, the energy consumption is low.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides an atmosphere heat treatment kiln, is including the furnace body that has furnace and being used for the switching furnace's furnace gate, the furnace body includes the shell and sets up in the shell and enclose into furnace's furnace lining, furnace lining and shell enclose to close and form first thermal-insulated cavity, be equipped with on the shell with the air inlet of first thermal-insulated cavity intercommunication, the furnace lining has the intercommunication first thermal-insulated cavity and furnace's hole.

As a further improvement of the above technical solution:

the furnace lining is a porous piece made of light fiber refractory materials, and a plurality of heat insulation connecting pieces for connecting the furnace lining and the shell are arranged in the first heat insulation cavity.

The furnace lining is built by refractory bricks with pores, and a plurality of heat-insulating connecting pieces for connecting the furnace lining and the shell are arranged in the first heat-insulating cavity.

The thickness of the first heat insulation cavity in the direction from the furnace lining to the shell is 10-20 mm.

The first heat insulation cavity covers the whole outer surface of the furnace lining.

The furnace door comprises a base plate and a door lining connected to the base plate, and the base plate and the door lining are enclosed to form a second heat insulation cavity.

And a plurality of heat insulation connecting pieces for connecting the door liner and the base plate are arranged in the second heat insulation cavity.

And the orthographic projection of the opening of the hearth on the base plate is positioned in the orthographic projection of the second heat insulation cavity on the base plate.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses an atmosphere heat treatment kiln, the furnace wall and the shell of furnace body enclose to close and form first thermal-insulated cavity, first thermal-insulated cavity separates furnace wall and shell, good thermal-insulated effect has, further can let in first thermal-insulated cavity through the air inlet with process atmosphere, get into furnace through the hole of furnace wall again, can cool off the furnace wall and bring furnace into again with the partial heat in the first thermal-insulated cavity, but the heat of furnace wall conduction to shell is followed in the significantly reduced, thereby reduce the temperature of shell, reduce the job stabilization nature and the life's of furnace body external equipment and supporting components and parts adverse effect, reduce thermal heat radiation loss simultaneously, reach the purpose that reduces the energy consumption. The atmosphere heat treatment kiln also has the advantages of simple structure, easy manufacture and assembly and low cost.

Drawings

FIG. 1 is a schematic view of the main sectional structure of an atmosphere heat treatment kiln.

Illustration of the drawings:

1. a furnace body; 11. a hearth; 12. a housing; 13. a furnace lining; 14. a first insulating cavity; 15. an air inlet; 2. a furnace door; 21. a substrate; 22. a door lining; 23. a second insulating cavity.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

As shown in fig. 1, the atmosphere heat treatment kiln of the embodiment includes a kiln body 1 having a hearth 11 and a kiln door 2 for opening and closing the hearth 11, the kiln body 1 includes a casing 12 and a lining 13 disposed in the casing 12 and enclosing the hearth 11, the lining 13 and the casing 12 enclose to form a first heat insulation cavity 14, the casing 12 is provided with an air inlet 15 communicated with the first heat insulation cavity 14, and the lining 13 has a pore space communicating the first heat insulation cavity 14 and the hearth 11. In the atmosphere heat treatment kiln, a furnace lining 13 and a shell 12 of a furnace body 1 are enclosed to form a first heat insulation cavity 14, the furnace lining 13 and the shell 12 are separated by the first heat insulation cavity 14, the atmosphere heat treatment kiln has a good heat insulation effect, further, process atmosphere can be introduced into the first heat insulation cavity 14 through an air inlet 15 and then enters a hearth 11 through the pores of the furnace lining 13, the furnace lining 13 can be cooled, part of heat in the first heat insulation cavity 14 is brought into the hearth 11 again, heat conducted from the furnace lining 13 to the shell 12 can be greatly reduced, the temperature of the shell 12 is reduced, adverse effects on the working stability and the service life of external equipment and matched components of the furnace body 1 are reduced, meanwhile, heat radiation loss of heat is reduced, and the purpose of reducing energy consumption is achieved. The atmosphere heat treatment kiln also has the advantages of simple structure, easy manufacture and assembly and low cost.

In this embodiment, the lining 13 is a porous piece made of a light fiber refractory material, and a plurality of heat-insulating connecting members for connecting the lining 13 and the shell 12 are provided in the first heat-insulating cavity 14. The light fiber refractory material is made into a refractory and heat-insulating material commonly used by the existing heat treatment kiln, the furnace lining 13 made of the light fiber refractory material has uniform pores, so that gas in the first heat-insulating cavity 14 can uniformly enter the hearth 11, the effect of preventing heat from diffusing through the furnace lining 13 is good, the uniformity of air inlet can be improved, and meanwhile, a plurality of heat-insulating connecting pieces for connecting the furnace lining 13 and the shell 12 are arranged in the first heat-insulating cavity 14, so that the relative connection stability of the furnace lining 13 and the shell 12 is good. Preferably, the heat-insulating connecting piece connecting the furnace lining 13 and the outer shell 12 is an anchoring piece, and the furnace lining 13 is connected to the outer shell 12 in an anchoring manner through the heat-insulating connecting piece.

In other embodiments, the lining 13 may be constructed of porous refractory bricks and the first insulating cavity 14 may include a plurality of insulating connectors that connect the lining 13 to the outer shell 12. The firebrick is the firebrick commonly used in the existing heat treatment kiln, and has more pores, so that the gas in the first heat insulation cavity 14 can uniformly enter the hearth 11, the heat is prevented from diffusing through the furnace lining 13, the effect is good, and meanwhile, a plurality of heat insulation connecting pieces for connecting the furnace lining 13 and the shell 12 are arranged in the first heat insulation cavity 14, so that the relative connection stability of the furnace lining 13 and the shell 12 is good. Preferably, the heat-insulating connecting member connecting the furnace lining 13 and the outer shell 12 is a support member, and the outer shell 12 is supported on the furnace lining 13 through the heat-insulating connecting member.

In this embodiment, the thickness of the first heat-insulating cavity 14 in the direction from the furnace lining 13 to the outer shell 12 is 10mm to 20 mm. The first heat insulation cavity 14 within the thickness range can meet the requirement of surface cooling of the existing heat treatment kiln, meanwhile, the assembly of the furnace lining 13 and the shell 12 cannot be influenced, and the structural strength and the stability of the furnace body 1 can be ensured.

In the embodiment, the first heat-insulating cavity 14 covers the whole outer surface of the furnace lining 13, so that heat loss is reduced to the maximum extent, and the uniformity of air inlet of the hearth 11 is the best.

In this embodiment, the oven door 2 includes a base plate 21 and a door liner 22 connected to the base plate 21, and the base plate 21 and the door liner 22 enclose to form a second insulating cavity 23. The second heat insulation cavity 23 separates the base plate 21 from the door liner 22, so that the heat conducted from the door liner 22 to the base plate 21 can be greatly reduced, the temperature of the base plate 21 is reduced, the adverse effects on the working stability and the service life of external equipment and matched components of the furnace door 2 are reduced, meanwhile, the heat radiation loss of heat is reduced, and the energy consumption is further reduced.

In this embodiment, the second insulating cavity 23 is provided with a plurality of insulating connectors for connecting the door liner 22 and the base plate 21, so that the base plate 21 and the door liner 22 are connected firmly with each other.

In this embodiment, the orthographic projection of the opening of the hearth 11 on the substrate 21 is located in the orthographic projection of the second heat-insulating cavity 23 on the substrate 21, and the heat-insulating effect is good.

In the present embodiment, the heat insulating connecting members are connecting members made of a conventional heat insulating material such as a ceramic heat insulating material.

The above description is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, the modifications and changes obtained without departing from the technical idea of the present invention shall be considered as the protection scope of the present invention.

Claims

1. An atmosphere heat treatment kiln, comprising a kiln body (1) having a hearth (11) and a kiln door (2) for opening and closing the hearth (11), the kiln body (1) comprising a housing (12) and a lining (13) arranged in the housing (12) and enclosing the hearth (11), characterized in that: the furnace lining (13) and the shell (12) are enclosed to form a first heat insulation cavity (14), an air inlet (15) communicated with the first heat insulation cavity (14) is formed in the shell (12), and the furnace lining (13) is provided with a hole communicated with the first heat insulation cavity (14) and the hearth (11).

2. The atmospheric heat treatment kiln of claim 1, wherein: the furnace lining (13) is a porous piece made of light fiber refractory materials, and a plurality of heat insulation connecting pieces for connecting the furnace lining (13) and the shell (12) are arranged in the first heat insulation cavity (14).

3. The atmospheric heat treatment kiln of claim 1, wherein: the furnace lining (13) is built by refractory bricks with pores, and a plurality of heat-insulating connecting pieces for connecting the furnace lining (13) and the shell (12) are arranged in the first heat-insulating cavity (14).

4. The atmospheric heat treatment kiln of claim 1, wherein: the thickness of the first heat insulation cavity (14) in the direction from the furnace lining (13) to the shell (12) is 10-20 mm.

5. The atmospheric heat treatment kiln of claim 1, wherein: the first heat insulation cavity (14) covers the whole outer surface of the furnace lining (13).

6. An atmosphere heat treatment kiln according to any one of claims 1 to 5, characterized in that: the furnace door (2) comprises a base plate (21) and a door lining (22) connected to the base plate (21), and the base plate (21) and the door lining (22) enclose to form a second heat insulation cavity (23).

7. An atmosphere heat treatment kiln according to claim 6, characterized in that: a plurality of heat insulation connecting pieces for connecting the door liner (22) and the base plate (21) are arranged in the second heat insulation cavity (23).

8. An atmosphere heat treatment kiln according to claim 6, characterized in that: the orthographic projection of the opening of the hearth (11) on the base plate (21) is positioned in the orthographic projection of the second heat insulation cavity (23) on the base plate (21).