CN202432865U - Roasting device of gas-circulation heating furnace - Google Patents

Abstract

The utility model relates to the field of ovens for circulating gas heating furnaces, in particular to an oven device for circulating gas heating furnaces, which includes an air pipe and an oven gas pipe, and is characterized in that the oven gas pipe is arranged in the air pipe to form a casing Structure, one end of the air pipe is blind, the air pipe nozzle one is set above the pipe wall of the blind end, the oven gas pipe nozzle protrudes from the air pipe nozzle one, the air pipe nozzle two is set between the furnace wall and the air pipe nozzle one, A heat-resistant protective layer is provided outside the air pipe. The nozzle end of the oven gas pipe is bent at an angle α of 45-60° relative to the axis of the air pipe. A normal combustion gas pipe is arranged in the air pipe. The heat-resistant protective layer is a cast layer of heat-resistant material. Compared with the prior art, the beneficial effects of the utility model are: 1) ensure the complete combustion of gas and air. 2) Prevent damage to the furnace wall caused by high-temperature flames or local rapid heating. 3) There is no need to replace the oven during the entire oven process.

Description

Circulating gas heating furnace oven device

technical field

The utility model relates to the field of ovens for circulating gas heating furnaces, in particular to an oven device for circulating gas heating furnaces.

Background technique

The regenerative circulating gas heating furnace is a kind of thermal equipment, and the furnace body and pipes need to be dried before being put into operation. The gas used for drying the regenerative circulating gas heating furnace adopts retort gas, which is a high calorific value gas produced by retort furnace, with large calorific value and high combustion temperature. The current oven device has a complex structure and high cost; when using high calorific value gas, it is easy to cause tempering; the shell is easily deformed under high temperature conditions, so that the oven device cannot meet the requirements of repeated use.

Contents of the invention

The purpose of this utility model is to provide a circulating gas heating furnace oven device, which overcomes the shortcomings of the prior art, can ensure that the gas and air are fully mixed and completely burned; can control the furnace temperature, and prevent the shell of the baking device from being too high due to local temperature. If it is damaged, the entire oven process does not need to replace the oven.

For solving the problems of the technologies described above, the technical solution of the utility model is:

The oven device of the circulating gas heating furnace includes an air pipe and an oven gas pipe. The oven gas pipe is arranged in the air pipe to form a sleeve structure. The gas pipe nozzle of the oven is arranged at the nozzle one of the air pipe, the nozzle two of the air pipe is arranged between the furnace wall and the nozzle one of the air pipe, and a heat-resistant protective layer is arranged outside the air pipe.

The nozzle end of the oven gas pipe is bent at an angle α of 45-60° relative to the axis of the air pipe.

The air pipe is provided with a normally-fired gas pipe, and the nozzle of the normally-fired gas pipe is located at one of the nozzles of the air pipe.

An electronic igniter is provided at one of the nozzles of the air pipe.

The heat-resistant protective layer is a pouring layer of heat-resistant material, and anchor nails are uniformly distributed in the pouring layer to prevent the pouring layer from falling off.

Compared with the prior art, the utility model has the beneficial effects as follows: 1) The nozzle of the gas pipe of the oven is located at the nozzle of the air pipe, which can ensure that the gas and air are fully mixed and completely burned. 2) Air pipe nozzle 2 forms a low-temperature protection zone at the furnace wall to prevent damage to the furnace wall caused by high-temperature flames or local rapid heating. 3) There is a heat-resistant protective layer on the outer surface of the steel shell of the baking device, which protects the outer shell of the baking device, and there is no need to replace the roaster during the entire baking process. 4) At the beginning of the oven, electric ignition is used to ignite the retort gas, which is safer and more reliable than manual ignition.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the utility model.

In the figure: 1-Air pipe 2-Bolt 3-Flange 4-Manhole flange 5-Continuous gas pipe 6-Oven gas pipe 7-Anchor nail 8-Heat-resistant protective layer 9-Fixer 10-Air pipe nozzle 2 11-Oven gas pipe nozzle 12-Air pipe nozzle 1 13-Electronic igniter 14-Furnace wall

Detailed ways

The specific embodiment of the utility model will be further described below in conjunction with accompanying drawing:

See Figure 1, which is a structural schematic diagram of an embodiment of an oven device for a circulating gas heating furnace of the present invention, including an air pipe 1 and an oven gas pipe 6, and the oven gas pipe 6 is arranged in the air pipe 1 through a fixing member 9 to form a casing structure , one end of the air pipe 1 is blinded, the air pipe nozzle 12 is arranged above the pipe wall of the blind end, the oven gas pipe nozzle 11 is arranged at the air pipe nozzle 12, and the air pipe nozzle 2 10 is arranged at the furnace wall 14 and the air pipe nozzle Between -12, a low-temperature gas protection zone is formed between the furnace wall and the oven flame to prevent damage to the furnace wall by high-temperature flames or local rapid temperature rise. Air pipe nozzle one 12 places are provided with electronic igniter 13, and ignition is safer. Also be provided with a normally-burning gas pipe 5 in the air pipe 1, the spout of the normally-burning gas pipe 5 is located at the air pipe spout-12, in the constant temperature stage of the oven, only the normally-burning gas pipe 5 spout places keep the combustion state, and serve as The ignition source for the next heat up.

The air pipe 1 is provided with a heat-resistant protective layer 8. The heat-resistant protective layer 8 is a pouring layer of heat-resistant material, and anchor nails 7 are evenly distributed in the pouring layer to prevent the pouring layer from falling off, so as to ensure that the baking device is always normal during the oven process. Work.

The nozzle 11 end of the oven gas pipe is bent at an angle α of 45-60° relative to the axis of the air pipe 1. The nozzle 11 of the oven gas pipe is located in the middle of the nozzle 12 of the air pipe, and sprays gas around at a certain angle to ensure that the oven gas Mix well with air and burn completely.

This device is arranged on the manhole flange 4 at the furnace wall 14 hole of the heating furnace through the flange 3 and the bolt 2, and the normal combustion gas pipe 5, the oven gas pipe 6 and the electronic igniter 13 are connected with the corresponding external pipelines, and the Equipment installation.

When the oven is baked, the combustion-supporting air is first introduced, and then the oven gas is introduced, and the electronic igniter 13 is turned on at the same time, that is, the normal oven program is entered, and the gas volume and air volume are automatically controlled according to the heating curve. During the oven process, it is necessary to control The speed of the air and oven gas nozzles is greater than the tempering speed to prevent the flame from entering the pipeline and burning.

Because retort gas is used for drying, retort gas is a kind of high calorific value gas, and the calorific value of gas is close to natural gas. When the furnace is baked, the method of excessive air should be used to control the furnace temperature. The role of cooling protection.

Claims (5)

1. An oven device for a circulating gas heating furnace, including an air pipe and an oven gas pipe, characterized in that the oven gas pipe is arranged inside the air pipe to form a sleeve structure, one end of the air pipe is blind, and the nozzle of the air pipe is set on Above the pipe wall of the blind end, the gas pipe nozzle of the oven is arranged at the nozzle one of the air pipe, the nozzle two of the air pipe is arranged between the furnace wall and the nozzle one of the air pipe, and a heat-resistant protective layer is arranged outside the air pipe. 2. The oven device of the circulating gas heating furnace according to claim 1, characterized in that, the nozzle end of the gas pipe of the oven is bent at an angle α of 45-60° relative to the axis of the air pipe. 3. The drying device of the circulating gas heating furnace according to claim 1 or 2, characterized in that, the air pipe is provided with a normally-fired gas pipe, and the nozzle of the normally-fired gas pipe is located at a nozzle of the air pipe. 4. The oven device of the circulating gas heating furnace according to claim 3, characterized in that an electronic igniter is provided at one of the nozzles of the air pipe. 5. The drying device of the circulating gas heating furnace according to claim 1 or 2, characterized in that, the heat-resistant protective layer is a cast layer of heat-resistant material, and anchor nails are evenly distributed in the cast layer to prevent the cast layer from falling off.

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