CN212482081U

CN212482081U - Novel energy-saving tunnel kiln

Info

Publication number: CN212482081U
Application number: CN202020377008.0U
Authority: CN
Inventors: 陈年太
Original assignee: HENAN HUAXINAO BUILDING MATERIALS CO LTD
Current assignee: HENAN HUAXINAO BUILDING MATERIALS CO LTD
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2021-02-05
Anticipated expiration: 2030-03-23

Abstract

The utility model discloses a tunnel cave technical field's a novel energy-conserving tunnel cave, include along tunnel cave main part extending direction preheating zone, burning zone and the cooling zone that sets gradually burning zone inboard is equipped with the heat-conducting layer, the heat-conducting layer encircles burning zone inboard a week so that form the burning chamber between heat-conducting layer and the tunnel cave main part, tunnel cave main part top be equipped with the communicating tail gas in burning chamber and draw off the pipeline. The utility model discloses be equipped with heat-conducting layer and burning chamber in the burn zone inboard, through the direct contact of heat-conducting layer separation flame with the material, stop the emergence of material overburning phenomenon, heat the gas in the burn zone through heat-conducting layer and burning chamber around burn zone a week simultaneously, can make the in-band temperature distribution of burning till even, and then improve the finished product quality.

Description

Novel energy-saving tunnel kiln

Technical Field

The utility model relates to a tunnel cave technical field, concretely relates to novel energy-conserving tunnel cave.

Background

A tunnel kiln is a long straight tunnel with fixed walls and arch tops on its two sides and top, and a track on its bottom for running kiln car. The combustion equipment is arranged at two sides of the middle part of the tunnel kiln to form a fixed high-temperature zone, namely a burning zone, high-temperature flue gas generated by combustion flows towards the kiln head along the tunnel under the action of a chimney or an induced draft fan at the front end of the tunnel kiln, and simultaneously gradually preheats products entering the kiln, and the section forms a preheating zone of the tunnel kiln. Blowing cold air into the tail of the tunnel kiln to cool the products in the later section of the tunnel kiln, pumping the blown cold air to the dryer to be used as a heat source for drying green bodies after the blown cold air flows through the products to be heated, and forming a cooling zone of the tunnel kiln. The sagger containing the ceramic products is placed on the trolley and is pushed slowly (usually mechanically) continuously from the inlet of the preheating zone, while the trolley carrying the burnt products is pushed out gradually from the outlet of the cooling zone.

The existing tunnel kiln adopts a mode of heat supply from two sides, so that the temperature distribution in a sintering zone is easy to be uneven, meanwhile, due to the influence of the rising trend of hot air flow, the temperature of two sides in the sintering zone is high, the middle temperature is low, the temperature of the top in the sintering zone is high, the temperature of the bottom in the sintering zone is low, and the uneven temperature distribution can cause coking and overburning deformation of materials, thereby influencing the quality of finished products.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a novel energy-saving tunnel kiln to solve the above problems.

The utility model discloses the technical scheme who adopts does:

the design is a novel energy-saving tunnel kiln, which comprises a preheating zone, a burning zone and a cooling zone which are sequentially arranged along the extension direction of a tunnel kiln main body, wherein the inner side of the burning zone is provided with a heat-conducting layer, a burning cavity is formed between the heat-conducting layer and the tunnel kiln main body, and the top of the tunnel kiln main body is provided with a tail gas leading-out pipeline communicated with the burning cavity.

Preferably, the heat conducting layer surrounds the inner side of the burning zone for one circle.

Preferably, a plurality of through holes are formed in the heat conduction layer.

Preferably, be equipped with a plurality of and tunnel cave main part extending direction vertically heat conduction sheetmetal in the preheating zone, and be equipped with waste heat recovery pipe between two adjacent heat conduction sheetmetals, be equipped with a plurality of inlet ports on the waste heat recovery pipe, the top of waste heat recovery pipe links to each other with the waste heat collecting pipe after running through tunnel cave main part, just be equipped with the draught fan on the waste heat collecting pipe.

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

1. the utility model discloses be equipped with heat-conducting layer and burning chamber in the burn zone inboard, through the direct contact of heat-conducting layer separation flame with the material, stop the emergence of material overburning phenomenon, heat the gas in the burn zone through heat-conducting layer and burning chamber around burn zone a week simultaneously, can make the in-band temperature distribution of burning till even, and then improve the finished product quality.

2. The utility model discloses be equipped with the heat conduction sheetmetal in preheating the area, through the barrier effect of heat conduction sheetmetal to the intrazone high-temperature gas of burning into, long when extension high-temperature gas keeps somewhere in burning into the area, waste heat collecting pipe between two adjacent heat conduction sheetmetals can carry out recycle with preheating the gas in the area simultaneously.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a view A-A of FIG. 1;

FIG. 3 is a view B-B of FIG. 1;

the heat recovery device comprises a tunnel main body 1, a preheating zone 2, a burning zone 3, a cooling zone 4, a heat conduction layer 5, a combustion chamber 6, a tail gas leading-out pipeline 7, a heat conduction metal sheet 8, a waste heat recovery pipe 9, an air inlet hole 10, a waste heat collecting pipe 11, an induced draft fan 12, a connecting support piece 13 and a through hole 14.

Detailed Description

The following embodiments are only intended to illustrate the present invention in detail, and do not limit the scope of the present invention in any way. The unit module components, structures, mechanisms, sensors and other devices referred to in the following examples are all conventional and commercially available products unless otherwise specified.

Example (b): as shown in fig. 1-3, a novel energy-saving tunnel kiln comprises a tunnel main body 1, a preheating zone 2, a burning zone 3 and a cooling zone 4 are sequentially arranged along the extending direction of the tunnel kiln main body 1, a heat conduction layer 5 is arranged on the inner side of the burning zone 3, the heat conduction layer 5 surrounds the burning zone 3 for a circle so as to form a burning cavity 6 between the heat conduction layer 5 and the tunnel kiln main body 1, the heat conduction layer 5 is fixedly connected with the tunnel kiln main body 1 through a connecting support piece 13, a tail gas leading-out pipeline 7 communicated with the burning cavity 6 is arranged at the top of the tunnel kiln main body 1, and the burnt tail gas is discharged and reused through the tail gas leading-out pipeline 7.

In other embodiments, in order to improve the heat conduction efficiency of the heat conduction layer 5, a plurality of through holes 14 are provided in the heat conduction layer 5.

In other embodiments, in order to improve the utilization efficiency of heat energy, a plurality of heat conducting metal sheets 8 perpendicular to the extending direction of the tunnel kiln main body 1 are arranged in the preheating zone 2, a waste heat recovery pipe 9 is arranged between two adjacent heat conducting metal sheets 8, a plurality of air inlet holes 10 are arranged on the waste heat recovery pipe 9, the top end of the waste heat recovery pipe 9 penetrates through the tunnel kiln main body 1 and then is connected with a waste heat collecting pipe 11, and an induced draft fan 12 is arranged on the waste heat collecting pipe 11.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a novel energy-conserving tunnel cave, includes preheating zone, burning zone and the cooling zone that sets gradually along tunnel cave main part extending direction, its characterized in that: the burning zone is internally provided with a heat conduction layer, a burning cavity is formed between the heat conduction layer and the tunnel kiln main body, and the top of the tunnel kiln main body is provided with a tail gas leading-out pipeline communicated with the burning cavity.

2. The novel energy-saving tunnel kiln of claim 1, characterized in that: the heat-conducting layer encircles the burning zone inboard a week.

3. The novel energy-saving tunnel kiln of claim 1, characterized in that: the heat conduction layer is provided with a plurality of through holes.

4. The novel energy-saving tunnel kiln of claim 1, characterized in that: be equipped with a plurality of with tunnel cave main part extending direction vertically heat conduction sheetmetal in the preheating zone, and be equipped with waste heat recovery pipe between two adjacent heat conduction sheetmetals, be equipped with a plurality of inlet ports on the waste heat recovery pipe, the top of waste heat recovery pipe is continuous with the waste heat collecting pipe after running through tunnel cave main part, just be equipped with the draught fan on the waste heat collecting pipe.