CN218155450U

CN218155450U - Wide-body roller kiln

Info

Publication number: CN218155450U
Application number: CN202221946223.3U
Authority: CN
Inventors: 潘建环; 廖伟锋; 何卫东; 彭星星
Original assignee: Foshan Keda Electromechanical Co ltd
Current assignee: Foshan Keda Electromechanical Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-12-27
Anticipated expiration: 2032-07-26

Abstract

The utility model discloses a wide body roller kilns, including furnace body, conveyor, heating device and the cooling device who has furnace, set up the heating nozzle through increasing heating device to be located the quench zone, through heating device work, the temperature of quench zone below can the lifting, thereby can reduce the upper and lower difference in temperature of quench zone, makes things convenient for temperature control, with the quality that improves the product.

Description

Wide-body roller kiln

Technical Field

The utility model relates to a heat treatment technical field in the kiln, in particular to wide body roller kilns.

Background

Due to the structural restriction of the roller kiln, the larger the inner width of the roller kiln, the larger the temperature difference of the cross section of the roller kiln, so that the temperature in the roller kiln is difficult to regulate and control and is difficult to distribute uniformly, and the quality of a fired product is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a wide body roller kilns can be under the furnace body condition of broad, conveniently controls the temperature of the internal cross section of kiln.

In order to achieve the above purpose, the technical scheme of the utility model has:

a wide body roller kiln comprising:

the furnace body comprises a smoke discharging section, a preheating oxidation section, a firing section and a cooling section which are arranged in sequence;

the conveying device is arranged in the hearth and is used for conveying the brick blanks;

the heating device is arranged on the furnace body and positioned on the pre-thermal oxidation section and the firing section, the heating device is used for heating brick blanks, and the heating device comprises a plurality of heating nozzles positioned on the pre-thermal oxidation section and the firing section;

the cooling device is arranged on the furnace body and used for cooling the brick blanks, and the cooling device comprises a plurality of groups of cold air pipe assemblies positioned on the cooling section;

the cooling section is partially a quenching section, and the multiple groups of cold air pipe assemblies comprise a first cold air pipe assembly and a second cold air pipe assembly positioned on the quenching section;

and a heating nozzle positioned on the quenching section is additionally arranged on the heating device.

Compared with the prior art, the utility model discloses a wide body roller kilns, including furnace body, conveyor, heating device and the cooling device who has furnace, through increasing to heating device and setting up the heating nozzle to be located the quench zone, through heating device work, the temperature of quench zone below can the lifting, thereby can reduce the upper and lower difference in temperature of quench zone, makes things convenient for temperature control, with the quality that improves the product.

Further, the heating nozzles of the quenching section are located at the lower side of the quenching section.

Further, the second cold air duct assembly includes:

a cold air pipe group arranged on the furnace body;

the air outlet of the first air blower is connected with the air inlet of the cold air pipe group;

the air blower comprises a first air blower and a second air blower, wherein the first air blower is arranged in the furnace body, the second air blower is arranged in the furnace body, and the air outlet of the second air blower is connected with the air inlet of the first air blower.

Furthermore, at least two air outlets of the blowing pipe group are arranged.

Further, the heating device includes:

the gas supply device is characterized in that a gas pipeline connected with the gas supply device is provided with an electric proportional valve;

the air supply device is provided with an electric butterfly valve on a gas pipeline connected with the air supply device;

and the gas supply device and the air supply device are connected with the heating nozzle through gas pipelines.

Further, install fume extractor on the section of discharging fume, fume extractor includes:

the air suction opening of the first-stage smoke exhaust assembly is positioned on one side, close to the pre-thermal oxidation section, of the smoke exhaust section;

and the air suction opening of the first-stage smoke exhaust assembly is positioned on one side, far away from the pre-heating oxidation section, of the smoke exhaust section.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic system structure diagram of the wide roller kiln in the embodiment;

fig. 2 is a schematic structural view showing a cooling section in the wide roller kiln in the present embodiment.

Detailed Description

In order to better illustrate the present invention, the present invention is described in further detail below with reference to the accompanying drawings.

It should be understood that the embodiments described are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order, nor is it to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

Due to the structural restriction of the roller kiln, the larger the inner width of the roller kiln is, the larger the temperature difference of the cross section of the roller kiln is, so that the temperature in the roller kiln is difficult to regulate and control and is difficult to distribute uniformly, and the quality of a fired product is influenced.

Therefore, the utility model discloses the technical problem who actually solves lies in how to reduce the upper and lower difference in temperature of 4 departments of cooling section.

As a specific example in this embodiment, as shown in fig. 1, a wide-body roller kiln includes:

the furnace body 100 is provided with a hearth, and the furnace body 100 comprises a smoke exhaust section 1, a preheating oxidation section 2, a burning section 3 and a cooling section 4 which are arranged in sequence;

a conveying device (not shown) installed in the hearth, the conveying device (not shown) being used for conveying the brick blanks;

the heating device 200 is installed on the furnace body 100 and is positioned on the pre-thermal oxidation section 2 and the firing section 3, the heating device 200 is used for heating brick blanks, and the heating device 200 comprises a plurality of heating nozzles positioned on the pre-thermal oxidation section 2 and the firing section 3;

the cooling device 300 is installed on the furnace body 100, the cooling device 300 is used for cooling the brick blanks, and the cooling device 300 comprises a plurality of groups of cold air pipe assemblies positioned on the cooling section 4;

the cooling section 4 is partially a quenching section 40, and the multiple sets of cold air pipe assemblies comprise a first cold air pipe assembly 41 and a second cold air pipe assembly 42 positioned on the quenching section 40;

the heating device 200 is additionally provided with a heating nozzle positioned on the quenching section 40.

It should be noted that, in the specific application of the roller kiln, no cold air is input into the preheating oxidation section 2 and the firing section 3, when the brick blanks are fired in the preheating oxidation section 2 and the firing section 3, the temperatures in the preheating oxidation section 2 and the firing section 3 are in a continuous high temperature state, the temperature change is not obvious, and after entering the cooling section 4, the temperature suddenly changes due to the entering of the cold air,

in a specific application, when the brick blank just enters the cooling section 4, i.e. the quenching section 40 in this embodiment, the temperature change above the quenching section 40 is small, and the temperature change below the quenching section 40 is large, so as to cause the high and low temperature state of the quenching section 40, therefore, in this embodiment, a heating nozzle on the quenching section 40 is added to the heating device 200, which aims to increase the temperature below the quenching section 40, reduce the temperature difference above and below the quenching section 40, and facilitate adjustment, so that the surrounding temperature of the brick blank passing through the quenching section 40 is always kept stable and constantly changed.

The wide roller kiln in the embodiment comprises a furnace body 100 with a hearth, a conveying device (not shown), a heating device 200 and a cooling device 300, wherein a heating nozzle is additionally arranged on the heating device 200 and is positioned on a quenching section 40, the temperature below the quenching section 40 can be lifted through the work of the heating device 200, so that the upper and lower temperature difference of the quenching section 40 can be reduced, the temperature control is facilitated, and the quality of products is improved.

In this embodiment, the heated nozzles of the quench section 40 are located on the underside of the quench section 40.

In the present embodiment, as shown in fig. 1 and 2, the second cold air duct assembly 42 includes:

a duct group 421 disposed on the furnace body 100;

an air outlet of the first blower 422 is connected with an air inlet of the air pipe set 421;

an air blowing pipe group 423 arranged on the furnace body 100, an air inlet of the air blowing pipe group 423 being connected with an air outlet of the first air blower 422, an air outlet of the air blowing pipe group 423 being opened downwards, which aims to increase local air flow and make the cross-sectional temperature distribution of the quenching section 40 more uniform.

Preferably, at least two air outlets of the blowing pipe group 423 are provided.

In the present embodiment, as shown in fig. 1, the heating device 200 includes:

the gas supply device 201, the gas pipeline connected with the gas supply device 201 is provided with an electric proportional valve;

an air supply device 202, wherein an electric butterfly valve is arranged on a gas pipeline connected with the air supply device 202;

The electric proportional valve corresponding to the gas supply device 201 and the electric butterfly valve corresponding to the air supply device 202 are controlled by the control terminal to be opened and closed, the electric proportional valve and the electric butterfly valve are adjusted according to the input pressure ratio of gas and air, so that the pressure ratio of the gas and the air at the heating nozzle can be dynamically stabilized at a set value, the combustion flame is stabilized, the temperature difference of the hearth is ensured, and meanwhile, the generation amount of NOx and CO gas can be controlled, thereby improving the quality and reducing the environmental pollution.

In this embodiment, as shown in fig. 1, a smoke evacuation device 400 is installed on the smoke evacuation section 1, and the smoke evacuation device 400 includes:

a first-stage smoke exhaust assembly 401, wherein a suction opening of the first-stage smoke exhaust assembly 401 is positioned on one side of the smoke exhaust section 1 close to the pre-thermal oxidation section 2;

a second-stage smoke exhausting assembly 402, wherein the air suction opening of the first-stage smoke exhausting assembly 401 is located on one side of the smoke exhausting section 1 far away from the pre-heating oxidation section 2.

The waste gas in a large amount of kilns is taken out by first order subassembly 401 of discharging fume, increases the supplementary gas extraction gas of subassembly 402 of discharging fume of second level simultaneously, can realize through the operating frequency who discharges fume subassembly 402 of second level according to kiln internal pressure size regulation to stabilize kiln internal pressure, so both can strengthen the convulsions ability of section 1 of discharging fume, also can avoid arousing the too big condition of kiln internal pressure change because first order subassembly 401 of discharging fume regulating quantity is too big.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A wide roller kiln, comprising:

2. The wide body roller kiln of claim 1, wherein:

the first heating nozzles on the quench section are located on the underside of the quench section.

3. The wide body roller kiln according to claim 1, wherein the second cold blast tube assembly comprises: a cold air pipe group arranged on the furnace body;

the air blower is characterized by comprising an air blowing pipe group arranged on the furnace body, wherein an air inlet of the air blowing pipe group is connected with an air outlet of the first air blower, and an air outlet of the air blowing pipe group is opened downwards.

4. The wide body roller kiln of claim 3, wherein:

at least two air outlets of the blowing pipe group are arranged.

5. The wide body roller kiln according to claim 1, wherein said heating means comprises:

6. The wide roller kiln of claim 1, wherein a smoke evacuation device is mounted on the smoke evacuation section, the smoke evacuation device comprising:

and the air suction opening of the first-stage smoke exhaust assembly is positioned on one side of the smoke exhaust section, which is far away from the pre-thermal oxidation section.