CN211626058U

CN211626058U - Wide roller kiln

Info

Publication number: CN211626058U
Application number: CN201922453136.9U
Authority: CN
Inventors: 欧阳建; 杨克辉; 黄映红; 甘莉; 刘慧�
Original assignee: Hunan Gold Furnace Science & Technology Co ltd
Current assignee: Hunan Gold Furnace Science & Technology Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-10-02
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a wide body roller kilns, including the furnace body that has furnace, install conveyor and heating device in the furnace, install the heating element that adjusts the temperature in the furnace body lateral wall of the at least one side of furnace. The wide roller kiln can adjust the temperature difference in the width direction of the hearth, and has the advantages of simplicity and convenience in adjustment and control, good adjustment and control effect, simple structure, low cost, easiness in implementation, easiness in modification of existing equipment and the like.

Description

Wide roller kiln

Technical Field

The utility model relates to a heat treatment kiln technical field equipment, concretely relates to wide body roller kilns.

Background

The sintering process of materials such as new energy materials is a process of completing high-temperature solid-phase reaction in a roller kiln, the maximum temperature difference of each point on the cross section of a roller kiln hearth is the temperature uniformity, the smaller the temperature uniformity is, the better the consistency of the sintered materials is, and the higher the product quality is. Because the section width of the continuous kiln is larger, the temperature uniformity is often larger, the temperature of a kiln manufacturer can be generally controlled to be about 10 ℃ at present, but with the deep development of new materials, the requirement on the kiln is higher and higher, and the current temperature uniformity level is not suitable for the development requirement of the new materials.

Generally speaking, radiation and convection are the main heat transfer modes in the hearth of the high-temperature roller kiln, the temperature uniformity of the cross section of the roller kiln is mainly reflected in the temperature deviation between the side part and the middle part, the material in the middle part is more subjected to the radiation of a heating element and the secondary radiation of a lining refractory material than the materials on the two sides, the temperature is relatively high, and when air inlets are formed in the two side walls of the roller kiln, the temperature difference between the middle part and the two side parts of the hearth can be further increased.

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 one kind and can adjust the furnace width direction difference in temperature, regulate and control portably, regulate and control effectual, simple structure, with low costs, easy to carry out the wide body roller kilns that reforms transform to existing equipment.

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

the wide roller kiln comprises a furnace body with a hearth, wherein a conveying device and a heating device are installed in the hearth, and a temperature-adjusting heating component is installed in the side wall of the furnace body on at least one side of the hearth.

As a further improvement of the above technical solution:

the temperature-adjusting heating component comprises more than one heating element arranged in the side wall of the furnace body.

The temperature-adjusting heating assembly is provided with a plurality of heating elements which are sequentially arranged at intervals along the material conveying direction of the conveying device.

All heating elements are located in the same horizontal plane.

The side wall of the furnace body is provided with a mounting counter bore, the opening of the mounting counter bore is communicated with the environment outside the furnace body, and the heating element is detachably mounted in the mounting counter bore.

The heating element comprises a pluggable base and a heating resistance wire arranged on the pluggable base, the pluggable base is inserted into the mounting counter bore, and an expansion supporting piece is arranged between the top surface of the pluggable base and the inner wall of the mounting counter bore in an expansion mode.

More than one heat insulation cavity is arranged inside the pluggable base, or the pluggable base is a heat insulation material part.

The side wall of the furnace body between the mounting counter bore and the hearth is built by heat-absorbing material pieces.

The heat absorbing material piece is a high-alumina refractory brick with pores inside.

The heating device comprises a plurality of upper heating rods positioned above the conveying device and a plurality of lower heating rods positioned below the conveying device, and each heating element is positioned between the upper heating rods and the lower heating rods.

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

the utility model discloses wide body roller kilns installs the heating element that adjusts the temperature in the furnace body lateral wall of furnace at least one side, usable heating element that adjusts the temperature heats the furnace body lateral wall, improve the temperature of furnace body lateral wall, can weaken greatly or avoid furnace lateral part position department through the outside heat that gives off of furnace body lateral wall, the furnace body lateral wall of high temperature is to furnace lateral part position department heat production thermal radiation simultaneously, can improve the temperature of furnace lateral part position department, realize the compensation to furnace lateral part position department temperature, thereby improve the ascending difference in temperature of furnace width direction, make the ascending temperature homogeneity of furnace width direction better, can improve the heat treatment product quality. The roller kiln has the advantages of simple and convenient regulation and control, good regulation and control effect, simple structure, low cost, easy implementation and easy reconstruction of the existing equipment.

Drawings

FIG. 1 is a schematic diagram of a partial main sectional structure of a wide roller kiln.

FIG. 2 is a schematic diagram of a side view structure of the wide roller kiln.

FIG. 3 is a partial cross-sectional structural schematic view of the heating element installed in the mounting counterbore.

Illustration of the drawings:

1. a furnace body; 11. a hearth; 12. mounting a counter bore; 2. a conveying device; 3. a heating device; 31. an upper heating rod; 32. a lower heating rod; 4. a heating element; 41. a pluggable base; 42. heating resistance wires; 5. and (5) expanding the support.

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 and 2, the wide roller kiln of the present embodiment includes a furnace body 1 having a hearth 11, a conveying device 2 and a heating device 3 are installed in the hearth 11, and a temperature adjusting heating assembly is installed in a side wall of the furnace body 1 on at least one side of the hearth 11. This wide body roller kilns installs the heating element that adjusts the temperature in 1 lateral wall of furnace body of 11 at least one sides of furnace, usable heating element that adjusts the temperature heats 1 lateral wall of furnace body, improve the temperature of 1 lateral wall of furnace body, can weaken greatly or avoid the outside heat that gives off of furnace 11 lateral part position department through 1 lateral wall of furnace body, 1 lateral wall of furnace body of high temperature is to 11 lateral part position departments heat production thermal radiation of furnace simultaneously, can improve the temperature of 11 lateral part position departments of furnace, realize the compensation to 11 lateral part position department temperatures of furnace, thereby improve the ascending difference in temperature of 11 width directions of furnace, make the ascending temperature homogeneity of 11 width directions of furnace better, can improve thermal treatment product quality. The roller kiln has the advantages of simple and convenient regulation and control, good regulation and control effect, simple structure, low cost, easy implementation and easy reconstruction of the existing equipment.

In this embodiment, temperature adjusting heating assemblies are installed in the side walls of the furnace body 1 at both sides of the furnace 11, so as to adjust the temperature at both side positions of the furnace 11. In other embodiments, a temperature-adjusting heating assembly can be mounted in the side wall of the furnace body 1 on one side of the hearth 11 to adjust the temperature of the side of the hearth 11 corresponding to the side.

In this embodiment, the temperature-adjusting heating assembly includes more than one heating element 4 installed in the side wall of the furnace body 1. Preferably, the temperature-adjusting heating assembly has a plurality of heating elements 4, and the plurality of heating elements 4 are arranged at intervals in sequence along the conveying direction of the conveying device 2. This kind of setting mode can carry out the difference in temperature regulation and control to 11 sections of district at conveyor 2 direction of delivery of furnace, improves the whole difference in temperature in 11 districts of this furnace to make the whole temperature homogeneity in 11 districts of this furnace good.

In this embodiment, all heating elements 4 are located same horizontal plane, do benefit to the better difference in temperature of adjusting in furnace 11, guarantee temperature uniformity in furnace 11.

In this embodiment, as shown in fig. 2 and 3, a mounting counterbore 12 is provided on the side wall of the furnace body 1, the opening of the mounting counterbore 12 is communicated with the environment outside the furnace body 1, and the heating element 4 is detachably mounted in the mounting counterbore 12. The heating element 4 can be manufactured by module design, and is convenient to manufacture and assemble, and the heating element 4 can be disassembled, so that the assembly and the maintenance are convenient.

In this embodiment, the heating element 4 includes the pluggable base 41 and the heating resistance wire 42 disposed on the pluggable base 41, the pluggable base 41 is inserted and installed in the installation counterbore 12, and the expansion support 5 is installed between the top surface of the pluggable base 41 and the inner wall of the installation counterbore 12. The heating element 4 adopts the combination of the heating resistance wire 42 and the pluggable base 41, the structure is simple, the cost is low, meanwhile, the expansion supporting piece 5 is installed between the top surface of the pluggable base 41 and the inner wall of the installation counter bore 12 in an expansion mode, the expansion supporting piece 5 and the heating element 4 form a support for the side wall structure of the furnace body 1 on the upper portion of the installation counter bore 12, and the problem that the structural strength is weakened due to the fact that the installation counter bore 12 is formed in the side wall of the furnace body 1 can be improved. Preferably, the inner walls of the mounting counterbores 12 above and below the pluggable base 41 are horizontal planes, so that the pluggable base 41 and the expansion supporting piece 5 expand tightly between the inner walls of the mounting counterbores 12 above and below the pluggable base 41, and the structural strength of the side wall of the furnace body 1 can be better improved.

In this embodiment, more than one heat insulation cavity is arranged inside the pluggable base 41, or the pluggable base 41 is a heat insulation material, and this kind of pluggable base 41 can improve the heat insulation performance.

In this embodiment, the side wall of the furnace body 1 between the installation counter bore 12 and the hearth 11 is built by heat-absorbing material pieces. When the heating element 4 is used for heating, the side wall of the furnace body 1 can absorb heat and radiate the heat into the hearth 11, so that the heating efficiency can be improved.

In this embodiment, the heat absorbing material is a high-alumina refractory brick having pores therein, which has a good heat capacity, can generate strong secondary radiation to the material in the furnace 11 after absorbing heat, and is easy to obtain and low in cost.

In this embodiment, the heating device 3 includes a plurality of upper heating rods 31 located above the conveying device 2 and a plurality of lower heating rods 32 located below the conveying device 2, and each heating element 4 is located between the upper heating rods 31 and the lower heating rods 32. The heating elements 4 compensate the temperature of the lateral part of the hearth 11 in the height area of the conveying device 2, the temperature uniformity of the material passing area can be well improved by adopting less heating elements 4, the quality of material treatment products is ensured, and the cost is reduced.

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. The utility model provides a wide body roller kilns, is including furnace body (1) that has furnace (11), install conveyor (2) and heating device (3) in furnace (11), its characterized in that: and a temperature-adjusting heating component is arranged in the side wall of the furnace body (1) at least on one side of the hearth (11).

2. The wide body roller kiln of claim 1, wherein: the temperature-adjusting heating component comprises more than one heating element (4) arranged in the side wall of the furnace body (1).

3. The wide body roller kiln of claim 2, wherein: the temperature-adjusting heating assembly is provided with a plurality of heating elements (4), and the heating elements (4) are sequentially arranged at intervals along the direction of conveying materials by the conveying device (2).

4. The wide body roller kiln of claim 3, wherein: all heating elements (4) are located in the same horizontal plane.

5. The wide body roller kiln of claim 2, wherein: the furnace body (1) is provided with a mounting counter bore (12) on the side wall, the opening of the mounting counter bore (12) is communicated with the environment outside the furnace body (1), and the heating element (4) is detachably mounted in the mounting counter bore (12).

6. The wide body roller kiln of claim 5, wherein: the heating element (4) comprises a pluggable base (41) and a heating resistance wire (42) arranged on the pluggable base (41), the pluggable base (41) is inserted into the installation counterbore (12), and an expansion support piece (5) is installed between the top surface of the pluggable base (41) and the inner wall of the installation counterbore (12) in an expansion mode.

7. The wide body roller kiln of claim 6, wherein: more than one heat insulation cavity is arranged inside the pluggable base (41), or the pluggable base (41) is a heat insulation material product.

8. The wide body roller kiln of claim 5, wherein: the side wall of the furnace body (1) between the mounting counter bore (12) and the hearth (11) is built by adopting heat-absorbing material pieces.

9. The wide body roller kiln of claim 8, wherein: the heat absorbing material piece is a high-alumina refractory brick with pores inside.

10. The wide body roller kiln according to any one of claims 2 to 9, wherein: the heating device (3) comprises a plurality of upper heating rods (31) positioned above the conveying device (2) and a plurality of lower heating rods (32) positioned below the conveying device (2), and each heating element (4) is positioned between the upper heating rods (31) and the lower heating rods (32).