CN207894230U - A kind of heated air circulation device of electrothermal tunnel kiln - Google Patents

Abstract

A hot air circulation device for an electric heating tunnel kiln, which relates to a hot air circulation device, which includes a kiln body, a ventilated heat insulation board and materials to be heated. There are heated materials, multiple air inlet pipes are arranged side by side between the top of the kiln body and the breathable heat insulation board, and multiple fans are respectively connected to multiple air inlet pipes on the outer side of the kiln body. A plurality of air holes are arranged at intervals on the air duct, an air outlet is provided in the middle of the air-permeable heat insulation board, and a plurality of circulation fans are arranged in the middle of the top of the kiln body, and the impellers of the circulation fans are arranged on the top of the kiln body to provide ventilation and heat insulation. In the space between the boards, there are vent holes that can be opened and closed between a plurality of fans; in the utility model, by setting a plurality of air inlet pipes, the hot air is sent into the kiln body through the air holes on the air inlet pipes, And the air flow is generated by the circulating fan to circulate the hot air in the kiln to the bottom of the kiln to ensure the uniform temperature in the kiln.

Description

A hot air circulation device for an electric heating tunnel kiln

technical field

The utility model relates to a hot air circulation device, in particular to a hot air circulation device for an electric heating tunnel kiln.

Background technique

As is known, a tunnel kiln is a kiln similar to a tunnel that is built of refractory materials, insulation materials and building materials, and is equipped with kiln cars and other vehicles. It is a modern thermal equipment for continuous firing; The heating method of the kiln is natural gas heating or electric heating. The advantage of natural gas heating is that there is air flow in the tunnel kiln, the temperature is uniform, and the volatiles of the heated items are easy to discharge. The disadvantage is that the temperature control accuracy is not high and is limited by the region. Natural gas resources are scarce. It cannot be used; while the electric heating tunnel kiln is not subject to geographical restrictions, and the temperature control is accurate, but there is a temperature difference between the upper and lower sides of the kiln, and volatiles tend to accumulate in a certain range and cannot be discharged smoothly, which affects the debinding effect.

Contents of the invention

In order to overcome the deficiencies in the background technology, the utility model discloses a hot air circulation device for an electric heating tunnel kiln.

In order to realize the purpose of the invention, the utility model adopts the following technical solutions:

A hot air circulation device for an electric heating tunnel kiln, comprising a kiln body, a ventilating heat insulating board and materials to be heated, the upper part of the kiln body is provided with a ventilating heat insulating board, the lower part of the ventilating heat insulating board is provided with heated materials, and Between the top of the kiln body and the air-permeable heat insulation board, multiple air inlet pipes are arranged side by side. On the outer side of the kiln body, several fans are respectively connected to the multiple air inlet pipes. On the air inlet pipes, there are multiple air holes, an air outlet is provided in the middle of the breathable heat insulation board, and a plurality of circulating fans are arranged in the middle of the top of the kiln body. The impellers of the circulation fans are arranged in the space between the top of the kiln body and the breathable heat insulation board. Vents arranged to be opened and closed are arranged between a plurality of blowers.

The hot air circulation device of the electric heating tunnel kiln is provided with a heating body on the inner wall of the kiln body.

In the hot air circulation device of the electric heating tunnel kiln, the fan is a fan with adjustable power.

Due to the above-mentioned technical scheme, the utility model has the following beneficial effects:

The hot air circulation device of the electric heating tunnel kiln described in the utility model is provided with a plurality of air inlet pipes, and the hot air is sent into the kiln body through the air holes on the air inlet pipes, and the air flow is generated by the circulating fan, so that the hot air in the kiln body can be circulated to The bottom of the kiln ensures that the temperature in the kiln is uniform, and the fan with adjustable power is used to control the amount of air intake; there are vent holes that can be opened and closed between multiple circulating fans, and there are more volatiles in the heated items. In the case where the exhaust hole is opened, the volatiles are discharged quickly, which will not cause the local concentration of volatiles to be too high and difficult to diffuse.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the utility model;

Fig. 2 is a side view of the utility model;

In the figure: 1. Air inlet pipe; 2. Kiln body; 3. Air hole; 4. Breathable heat insulation board; 5. Circulating fan; 6. Air outlet; 7. Heated material; 8. Heating body; 9. Fan; 10 ,Vent.

Detailed ways

The utility model can be explained in detail through the following examples, and the purpose of disclosing the utility model is to protect all technical improvements within the scope of the utility model.

The hot air circulation device of the electric heating tunnel kiln described in conjunction with accompanying drawings 1-2 includes a kiln body 2, a breathable heat insulation board 4 and heated materials 7, and a breathable heat insulation board 4 is arranged on the upper part of the kiln body 2, and the ventilation The heated material 7 is arranged on the lower part of the heat insulation board 4, a plurality of air inlet pipes 1 are arranged side by side between the top of the kiln body 2 and the air-permeable heat insulation board 4, and a plurality of fans are arranged on the outer side of the kiln body 2 9 are respectively connected with a plurality of air inlet pipes 1, and a plurality of air holes 3 are arranged at intervals on the air inlet pipe 1, and a tuyere 6 is arranged in the middle part of the air-permeable heat insulation board 4, and a plurality of circulating air outlets are arranged in the middle part of the top of the kiln body 2. The fan 5, the impeller of the circulating fan 5 is arranged in the space between the top of the kiln body 2 and the air-permeable heat insulation board 4, and the exhaust holes 10 which are opened and closed are arranged between the plurality of fans 9.

The hot air circulation device of the electric heating tunnel kiln is provided with a heating body 8 on the inner wall of the kiln body 2 .

In the hot air circulation device of the electric heating tunnel kiln, the fan 9 is a fan with adjustable power.

Implement the hot air circulation device of the electric heating tunnel kiln described in the utility model. When in use, the air inlet pipe 1 is used to supply air through the fan 9 with adjustable power to control the amount of air intake. The air holes 3 on the air inlet pipe 1 The hot air is sent into the kiln body 2, and the air flow is generated by the circulation fan 5, so that the hot air in the kiln body 2 is circulated to the bottom of the kiln body 2, and the temperature in the kiln body 2 is guaranteed to be uniform. Open and close the vent hole 10, when there are many volatiles in the heated article, the vent hole 10 will be opened, and the volatiles will be discharged quickly, which will not cause the local concentration of volatiles to be too high and difficult to diffuse; depending on the type of volatiles , filtering and purification collection devices can be set outside the exhaust hole 10, which is more environmentally friendly.

The unspecified part of the utility model is prior art.

In order to disclose the inventive purpose of the present utility model and the embodiment selected herein, current thinks that is suitable, but, it should be understood that, the utility model is intended to include all all belonging to the embodiment of this idea and the scope of the utility model changes and improvements.

Claims (3)

1. A hot air circulation device for an electric heating tunnel kiln, comprising a kiln body, a ventilating heat insulating board and heated materials, characterized in that: a ventilating heat insulating board is arranged on the upper part of the kiln body, and a ventilating heat insulating board is arranged on the lower part of the ventilating heat insulating board. There are materials to be heated, and multiple air inlet pipes are arranged side by side between the top of the kiln body and the breathable heat insulation board, and multiple fans are respectively connected to multiple air inlet pipes on the outer side of the kiln body. A plurality of air holes are arranged at intervals on the pipe, an air outlet is provided in the middle of the air-permeable heat insulation board, and a plurality of circulation fans are arranged in the middle of the top of the kiln body, and the impellers of the circulation fans are arranged on the top of the kiln body and the air-permeable heat insulation board In the space between, open and close exhaust holes are arranged between the plurality of fans. 2. The hot air circulation device of the electric heating tunnel kiln according to claim 1, characterized in that: a heating body is provided on the inner wall of the kiln body. 3. The hot air circulation device of the electric heating tunnel kiln according to claim 1, characterized in that: the fan is a fan with adjustable power.