Energy-saving waste heat recycling device for drying kiln

Abstract

The utility model relates to the technical field of drying kilns, and discloses a drying kiln energy-saving waste heat recycling device which is applied to a drying kiln body, a first exhaust fan is detachably installed at the upper end of one side of the drying kiln body, the upper end of the first exhaust fan is communicated with a first pipeline, and the other end of the first pipeline is communicated with the upper end of the drying kiln body. According to the technical scheme, the absorbent cotton layer in the treatment barrel is matched with the filter screen to intercept moisture in smoke dust and moisture, dry air containing heat is exhausted to the lower end of the treatment barrel, the second exhaust fan is matched with the second pipeline to suck the treated dry air containing heat into a drying kiln, and the heat is exhausted to the lower end of the treatment barrel. And the air flow can be accelerated, so that the fan blades drive the transmission rod to rotate, and then the brush strips on the transmission rod are driven to clean the filter screen, and therefore, the situation that the absorbent cotton layer is blocked by smoke dust is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of drying kilns, in particular to an energy-saving waste heat recycling device for a drying kiln. Background Technique

[0002] A drying kiln is a large-scale drying device used in industrial production and is widely used in the production of the cement industry, metallurgical industry, wood drying, brick and tile drying, etc. During the production process of the drying kiln, the reaction temperature of the kiln body is relatively high. Therefore, the acquisition, monitoring, and control of process parameters such as the temperature of the kiln body are important links to ensure the roasting quality.

[0003] When implementing this technical solution, at least the following defects still exist: Although the existing drying kiln can dry iron-making products, a large amount of moisture and soot will be discharged during the actual operation of the drying kiln. Among them, the heat in the drying kiln will be discharged along with the moisture, making it inconvenient to recycle the heat in the moisture. Moreover, due to the existence of soot, it is extremely easy to cause the blockage of the water-absorbing cotton layer, and improvement is urgently needed. Therefore, we propose an energy-saving waste heat recycling device for a drying kiln. Content of the Utility Model

[0004] The purpose of the utility model is to provide an energy-saving waste heat recycling device for a drying kiln, which solves the problems raised in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An energy-saving waste heat recycling device for a drying kiln is applied to the drying kiln body. A first exhaust fan is detachably installed at the upper end of one side of the drying kiln body. The upper end of the first exhaust fan is communicated with a first pipeline, and the other end of the first pipeline is communicated with the upper end of the drying kiln body. A treatment cylinder is fixedly installed on one side of the drying kiln body. A water-absorbing cotton layer is detachably installed at the upper end of the inner cavity of the treatment cylinder, and a filter screen is arranged at the upper end of the water-absorbing cotton layer.

[0006] A transmission rod is rotatably installed in the middle of the inner cavity of the treatment cylinder through a bearing. A brush strip is detachably installed at the upper end of the transmission rod. An acceleration channel is arranged in the inner cavity of the treatment cylinder. One side of the lower end of the treatment cylinder is communicated with a second pipeline. A second exhaust fan is fixedly installed at the upper end of the drying kiln body, and the other end of the second pipeline is communicated with the input end of the second exhaust fan.

[0007] By adopting the above technical solution, the water-absorbing cotton layer in the treatment cylinder can cooperate with the filter screen to intercept the moisture in the smoke and dust and moisture, and then discharge the dry air containing heat to the lower end of the treatment cylinder. At the same time, the second exhaust fan is turned on, and the treated dry air containing heat is drawn into the drying kiln through the cooperation of the second exhaust fan and the second pipeline, so as to reuse the heat, further reduce the drying energy consumption of the drying kiln, and accelerate the air flow when the air flow passes through the acceleration channel, so that the air flow blows the fan blades, and the fan blades drive the transmission rod to rotate, and then drive the brush strip on the transmission rod to clean the filter screen, thus avoiding the situation that the smoke and dust block the water-absorbing cotton layer, and further ensuring the effect of heat reuse.

[0008] Optionally, a one-way valve is connected to one side of the second exhaust fan, and the one-way valve is connected to the upper end of the drying kiln body.

[0009] By adopting the above technical solution, it is convenient to ensure that the treated hot air flow is discharged into the drying kiln body through the setting of the one-way valve, and avoid the discharge of the hot air flow in the drying kiln body.

[0010] Optionally, the cross section of the acceleration channel is in the shape of an isosceles trapezoid, and the diameter of the upper end of the acceleration channel is larger than the diameter of the middle part.

[0011] By adopting the above technical solution, it is convenient to accelerate the air flow passing through, so as to drive the fan blades to rotate.

[0012] Optionally, the brush strip is arranged above the filter screen, and the bristles of the brush strip are attached to the upper end of the filter screen.

[0013] By adopting the above technical solution, it is convenient to ensure the cleaning effect of the brush strip on the filter screen.

[0014] Optionally, the lower end of the first exhaust fan is connected to the upper end of the treatment cylinder.

[0015] By adopting the above technical solution, it is convenient to discharge the moisture and smoke and dust inside the drying kiln into the treatment cylinder for waste heat reuse treatment.

[0016] Optionally, a fan blade is fixedly installed at the lower end of the transmission rod, and the fan blade is arranged below the acceleration channel.

[0017] By adopting the above technical solution, it is convenient to ensure that the accelerated air flow can blow the fan blade, and then drive the transmission rod to rotate.

[0018] Compared with the prior art, the beneficial effects of the technical solution of the present application are as follows:

[0019] Through the drying kiln body, the first exhaust fan, the treatment cylinder, the water-absorbing cotton layer, the brush strip, the second exhaust fan and the one-way valve provided in the technical solution of the present application, the moisture in the soot and moisture can be intercepted by the water-absorbing cotton layer in the treatment cylinder in cooperation with the filter screen, and then the dry air containing heat is discharged to the lower end of the treatment cylinder. At the same time, the second exhaust fan is turned on, and the dry air containing heat after treatment is drawn into the drying kiln through the cooperation of the second exhaust fan and the second pipeline, so as to reuse the heat, further reduce the drying energy consumption of the drying kiln, and the air flow can be accelerated when passing through the acceleration channel, so that the air flow blows the fan blades, and the fan blades drive the transmission rod to rotate, and then drive the brush strip on the transmission rod to clean the filter screen, thus avoiding the situation of soot blocking the water-absorbing cotton layer, and further ensuring the effect of heat reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present utility model will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of an energy-saving waste heat reuse device for a drying kiln according to the present utility model;

[0022] Figure 2 It is a partial enlarged structural schematic diagram of part A of an energy-saving waste heat reuse device for a drying kiln according to the present utility model.

[0023] In the figure: 1, drying kiln body; 11, first exhaust fan; 12, first pipeline; 2, treatment cylinder; 21, water-absorbing cotton layer; 22, filter screen; 23, transmission rod; 24, brush strip; 3, acceleration channel; 4, fan blade; 5, second pipeline; 6, second exhaust fan; 7, one-way valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Please refer to Figure 1-2 , the present utility model provides a technical solution: an energy-saving waste heat reuse device for a drying kiln, which is applied to the drying kiln body 1. The upper end of one side of the drying kiln body 1 is detachably installed with a first exhaust fan 11, the upper end of the first exhaust fan 11 is communicated with a first pipeline 12, the other end of the first pipeline 12 is communicated with the upper end of the drying kiln body 1, a treatment cylinder 2 is fixedly installed on one side of the drying kiln body 1, a water-absorbing cotton layer 21 is detachably installed at the upper end of the inner cavity of the treatment cylinder 2, and a filter screen 22 is arranged at the upper end of the water-absorbing cotton layer 21;

[0025] In the middle of the inner cavity of the processing cylinder 2, a transmission rod 23 is rotatably installed through a bearing. A brush strip 24 is detachably installed at the upper end of the transmission rod 23. An acceleration channel 3 is arranged in the inner cavity of the processing cylinder 2. One side of the lower end of the processing cylinder 2 is communicated with a second pipeline 5. A second exhaust fan 6 is fixedly installed at the upper end of the drying kiln body 1. The other end of the second pipeline 5 is communicated with the input end of the second exhaust fan 6. The brush strip 24 is arranged above the filter net 22, and the bristles of the brush strip 24 are attached to the upper end of the filter net 22, which is convenient for ensuring the cleaning effect of the brush strip 24 on the filter net 22. The lower end of the first exhaust fan 11 is communicated with the upper end of the processing cylinder 2, which is convenient for discharging the moisture and soot inside the drying kiln into the processing cylinder 2 for waste heat reuse treatment. A fan blade 4 is fixedly installed at the lower end of the transmission rod 23, and the fan blade 4 is arranged below the acceleration channel 3, which is convenient for ensuring that the accelerated air flow can blow the fan blade 4, thereby driving the transmission rod 23 to rotate.

[0026] One side of the second exhaust fan 6 is communicated with a check valve 7, and the check valve 7 is communicated with the upper end of the drying kiln body 1, which is convenient for ensuring that the processed hot air flow is discharged into the drying kiln body 1 through the setting of the check valve 7 and preventing the hot air flow inside the drying kiln body 1 from being discharged.

[0027] The cross-section of the acceleration channel 3 is an isosceles trapezoid, and the diameter of the upper end of the acceleration channel 3 is larger than that of the middle part, which is convenient for accelerating the air flow passing through, so as to drive the fan blade 4 to rotate conveniently.

[0028] During use, when the drying kiln is drying, the moisture and soot inside the drying kiln are drawn into the processing cylinder 2 through the first exhaust fan 11. The water in the soot and moisture is intercepted through the water absorption cotton layer 21 and the filter net 22 in the processing cylinder 2, and then the dry air containing heat is discharged to the lower end of the processing cylinder 2. At the same time, the second exhaust fan 6 is turned on, and the processed dry air containing heat is drawn into the drying kiln through the cooperation of the second exhaust fan 6 and the second pipeline 5, so as to reuse the heat, further reducing the drying energy consumption of the drying kiln. At the same time, when the air flow passes through the acceleration channel 3, since the air flow is discharged from a large diameter into the acceleration channel 3 with a small diameter, the air flow is accelerated. Then, with the suction force of the second exhaust fan 6, it can be ensured that the air flow quickly reaches the lower part of the processing cylinder 2. Due to the rapid flow of the air flow, the air flow will blow the fan blade 4, causing the fan blade 4 to drive the transmission rod 23 to rotate, and then driving the brush strip 24 on the transmission rod 23 to clean the filter net 22, thus avoiding the situation that the soot blocks the water absorption cotton layer 21 and further ensuring the effect of heat reuse.

Claims

1. An energy-saving waste heat recycling device for a drying kiln, which is applied to the drying kiln body (1), and is characterized in that: One upper end of the drying kiln body (1) is detachably installed with a first exhaust fan (11). The upper end of the first exhaust fan (11) is communicated with a first pipeline (12). The other end of the first pipeline (12) is communicated with the upper end of the drying kiln body (1). One side of the drying kiln body (1) is fixedly installed with a treatment cylinder (2). An upper end inside the treatment cylinder (2) is detachably installed with a water-absorbing cotton layer (21). A filter screen (22) is arranged above the water-absorbing cotton layer (21); A driving rod (23) is rotatably installed inside the treatment cylinder (2) through a bearing in the middle of the inner cavity of the treatment cylinder (2). A brush strip (24) is detachably installed at the upper end of the driving rod (23). An acceleration channel (3) is arranged inside the treatment cylinder (2). One side of the lower end of the treatment cylinder (2) is communicated with a second pipeline (5). A second exhaust fan (6) is fixedly installed at the upper end of the drying kiln body (1). The other end of the second pipeline (5) is communicated with the input end of the second exhaust fan (6).

2. The energy-saving waste heat recycling device for a drying kiln according to claim 1, characterized in that: A check valve (7) is communicated with one side of the second exhaust fan (6). The check valve (7) is communicated with the upper end of the drying kiln body (1).

3. The energy-saving waste heat recycling device for a drying kiln according to claim 1, characterized in that: The cross section of the acceleration channel (3) is an isosceles trapezoid, and the diameter of the upper end of the acceleration channel (3) is larger than that of the middle part.

4. A drying kiln energy-saving waste heat recycling device according to claim 1, characterized in that: The brush strip (24) is arranged above the filter screen (22), and the bristles of the brush strip (24) are attached to the upper end of the filter screen (22).

5. The energy-saving waste heat recycling device for a drying kiln according to claim 1, wherein: The lower end of the first exhaust fan (11) is communicated with the upper end of the treatment cylinder (2).

6. The energy-saving waste heat recycling device for a drying kiln according to claim 1, wherein: A fan blade (4) is fixedly installed at the lower end of the driving rod (23), and the fan blade (4) is arranged below the acceleration channel (3).

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