Ventilation cooling structure of tunnel kiln cooling section

Abstract

The utility model relates to the technical field of tunnel kiln cooling section ventilation, in particular to a tunnel kiln cooling section ventilation cooling structure which comprises a blast device. The output end of the blast equipment communicates with a main pipeline, a preheating mechanism is installed on the outer side of the main pipeline, a temperature sensor used for detecting the temperature of gas in the main pipeline is further installed on the outer side of the main pipeline, the other end of the main pipeline communicates with a kiln inner wall pipeline, and the outer side of the main pipeline communicates with two sets of side pipelines. The other end of the side pipeline is communicated with the kiln inner wall pipeline; according to the device, the blast equipment is started, external air is conveyed into the kiln inner wall pipeline through the main pipeline, the air can uniformly enter the kiln inner wall pipeline under the action of the side pipelines on the two sides and then is exhausted through the exhaust nozzle, the preheating mechanism is arranged on the outer side of the main pipeline, and the conveyed air can be adjusted at the moment; and at the moment, the uniform cooling of the product can be realized, and the quality of the product is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation of a tunnel kiln cooling section, in particular to a ventilation and cooling structure of a tunnel kiln cooling section. Background Art

[0002] A tunnel kiln is typically a long, straight tunnel with fixed walls and a vaulted ceiling on either side, and a kiln car running on tracks at the base. Combustion equipment is located on either side of the tunnel kiln's center, forming a fixed high-temperature zone—the firing zone. High-temperature flue gas generated by combustion flows along the tunnel toward the kiln head, driven by the chimney or induced draft fan at the front of the tunnel kiln, gradually preheating the products entering the kiln. This section constitutes the tunnel kiln's preheating zone. Cold air is blown in at the rear of the tunnel kiln to cool the products entering the kiln. This cool air, after passing through the products and heating them, is then withdrawn and fed into a dryer as a heat source for drying the greenware. This section constitutes the tunnel kiln's cooling zone.

[0003] Existing cooling mechanisms often directly inject air into the kiln, and the temperature of the air cannot be controlled. During the cooling process, if the temperature of the cold air is too low, it is easy to cause the product to be suddenly cooled when flowing through it, resulting in cracks. If the temperature of the cold air is not low enough when flowing through the product, the product cannot be fully cooled. Therefore, to address the above problems, a ventilation cooling structure for the cooling section of a tunnel kiln is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a ventilation and cooling structure for the cooling section of a tunnel kiln, so as to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] As an optional solution of the ventilation and cooling structure of the cooling section of a tunnel kiln described in the utility model, wherein: a ventilation and cooling structure of the cooling section of a tunnel kiln comprises a tunnel kiln, a blasting device and a main pipeline;

[0007] The output end of the blast device is connected to a main pipeline, a preheating mechanism is installed on the outside of the main pipeline, and a temperature sensor for detecting the temperature of the gas inside the main pipeline is also installed on the outside of the main pipeline. The other end of the main pipeline is connected to the kiln inner wall pipeline, and the outside of the main pipeline is connected to two sets of side pipelines, and the other ends of the side pipelines are connected to the kiln inner wall pipeline;

[0008] The kiln inner wall pipe is installed on the inner wall of the tunnel kiln, and the outer side of the kiln inner wall pipe is connected with evenly distributed exhaust nozzles.

[0009] As an optional solution of the ventilation and cooling structure of the cooling section of a tunnel kiln described in the utility model, the input end of the air blowing device is connected to an air inlet pipe, and the other end of the air inlet pipe is connected to a filter screen.

[0010] Existing cooling mechanisms often inject air directly into the kiln, and the temperature of the air cannot be controlled. During the cooling process, if the temperature of the cold air is too low, it is easy to cause the product to cool suddenly when flowing through it, resulting in cracks. If the temperature of the cold air is not low enough when flowing through the product, the product cannot be fully cooled. When in use, the power is turned on and the blower equipment is started. The external air is transported to the inside of the kiln inner wall pipe through the main pipe, and under the action of the side pipes on both sides, the air can evenly enter the inside of the kiln inner wall pipe and then be discharged from the exhaust nozzle. A preheating mechanism is provided on the outside of the main pipe. At this time, the transported air can be adjusted to make its temperature moderate. At this time, uniform cooling of the product can be achieved, effectively ensuring the quality of the product.

[0011] As an optional solution of the ventilation cooling structure of the cooling section of a tunnel kiln described in the present invention, wherein: the preheating mechanism includes a heat circulation pump, a heat input pipe and a heat output pipe, one side of the heat circulation pump is connected to the heat input pipe, and the other end of the heat input pipe is connected to the high-temperature zone of the tunnel kiln, the other side of the heat circulation pump is connected to the heat output pipe, and the other end of the heat output pipe is connected to the preheating pipe, the other end of the preheating pipe is connected to the discharge pipe, and the other end of the discharge pipe is connected to the combustion end of the tunnel kiln;

[0012] The preheating pipe is arranged on the outside of the main pipeline.

[0013] As an optional solution of the ventilation cooling structure of the cooling section of a tunnel kiln described in the utility model, the preheating tube is spirally arranged and is made of aluminum tube material.

[0014] As an optional solution of the ventilation cooling structure of the cooling section of the tunnel kiln described in the utility model, a valve is further installed on the outer side of the heat output pipe.

[0015] The air preheated in the main pipeline can be connected to the high-temperature zone of the tunnel kiln by a heat circulation pump to realize heat utilization. After the hot air flows through the preheating pipe to preheat the air inside the main pipeline, it can be discharged to the combustion end through the exhaust pipe, at this time, the air can be fully heated and utilized.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] When the utility model is in use, the blower device is started, and the external air is transported to the inside of the kiln inner wall pipe through the main pipe, and under the action of the side pipes on both sides, the air can evenly enter the inside of the kiln inner wall pipe and then be discharged from the exhaust nozzle. A preheating mechanism is provided on the outside of the main pipe, and the transported air can be adjusted to a moderate temperature. At this time, the product can be evenly cooled, and the quality of the product can be effectively guaranteed.

[0018] The air preheated in the main pipeline can be connected to the high temperature zone of the tunnel kiln by a heat circulation pump to realize heat utilization. After the hot air flows through the preheating pipe to preheat the air inside the main pipeline, it can be discharged to the combustion end through the exhaust pipe, at this time, the air can be fully heated and utilized.

[0019] The internal temperature of the main pipeline is detected by two sets of temperature sensors. When the temperature sensor at one end detects that the temperature is appropriate, its valve is closed and the preheating mechanism is not started. When the temperature sensor detects that the temperature is low, preheating can be achieved by starting the heat circulation pump. The temperature sensor on the other side can detect whether the preheating temperature is appropriate. If it is appropriate, it will be maintained. If it is not appropriate, it will be adjusted by the flow speed of the heat circulation pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a structural diagram of the preheating mechanism of the utility model.

[0022] In the figure: 1. Tunnel kiln; 2. Blowing equipment; 3. Main pipeline; 4. Side pipeline; 5. Kiln inner wall pipeline; 6. Exhaust nozzle; 7. Preheating mechanism; 701. Heat circulation pump; 702. Heat input pipe; 703. Heat output pipe; 704. Preheating pipe; 705. Discharge pipe; 706. Valve; 8. Temperature sensor; 9. Air inlet pipe; 10. Filter. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1: Please refer to Figure 1 , the utility model provides a technical solution:

[0025] A ventilation and cooling structure for a tunnel kiln cooling section includes a tunnel kiln 1, an air blast device 2, and a main pipeline 3;

[0026] The output end of the blast device 2 is connected to a main pipe 3, a preheating mechanism 7 is installed on the outside of the main pipe 3, and a temperature sensor 8 for detecting the temperature of the gas inside the main pipe 3 is also installed on the outside of the main pipe 3. The other end of the main pipe 3 is connected to the kiln inner wall pipe 5. The outside of the main pipe 3 is connected to two sets of side pipes 4, and the other ends of the side pipes 4 are connected to the kiln inner wall pipe 5.

[0027] The kiln inner wall pipe 5 is installed on the inner wall of the tunnel kiln 1 , and the outer side of the kiln inner wall pipe 5 is connected to uniformly distributed exhaust nozzles 6 .

[0028] The input end of the air blowing device 2 is connected to an air inlet pipe 9 , and the other end of the air inlet pipe 9 is connected to a filter 10 .

[0029] Existing cooling mechanisms often directly inject air into the kiln, and the temperature of the air cannot be controlled. During the cooling process, if the temperature of the cold air is too low, it is easy to cause sudden cooling of the product when it flows through it, resulting in cracks. If the temperature of the cold air is not low enough when it flows through the product, the product cannot be fully cooled. When in use, the power is turned on and the blower device 2 is started. The external air is transported to the inside of the kiln inner wall pipe 5 through the main pipe 3. Under the action of the side pipes 4 on both sides, the air can be evenly introduced into the inside of the kiln inner wall pipe 5 and then discharged from the exhaust nozzle 6. A preheating mechanism 7 is provided on the outside of the main pipe 3. At this time, the transported air can be adjusted to a moderate temperature, so that the product can be evenly cooled, effectively ensuring the quality of the product.

[0030] In this embodiment, the heat in the preheating mechanism 7 can be taken from the high temperature zone of the tunnel kiln 1, and the air after heat exchange can be discharged to the combustion section for full heating and utilization. A filter 10 is also provided on one side of the air inlet pipe 9 to filter the external air and prevent impurities from entering the tunnel kiln 1 and affecting the quality of the product.

[0031] The heat used by the preheating mechanism 7 is directly taken from the tunnel kiln 1, avoiding the need for an external heating unit and thus avoiding an increase in cost.

[0032] Example 2: This example is an improvement on Example 1. Figure 2Specifically, the preheating mechanism 7 includes a heat circulation pump 701, a heat input pipe 702 and a heat output pipe 703. One side of the heat circulation pump 701 is connected to the heat input pipe 702, and the other end of the heat input pipe 702 is connected to the high-temperature zone of the tunnel kiln 1. The other side of the heat circulation pump 701 is connected to the heat output pipe 703, and the other end of the heat output pipe 703 is connected to the preheating pipe 704. The other end of the preheating pipe 704 is connected to the discharge pipe 705, and the other end of the discharge pipe 705 is connected to the combustion end of the tunnel kiln 1.

[0033] The preheating pipe 704 is arranged on the outside of the main pipeline 3.

[0034] The preheating tube 704 is spirally arranged and is made of aluminum tube material.

[0035] A valve 706 is also installed on the outside of the heat output pipe 703 .

[0036] The air preheated in the main pipe 3 can be connected to the high temperature zone of the tunnel kiln 1 by the heat circulation pump 701 to realize heat utilization. After the hot air flows through the preheating pipe 704 to preheat the air inside the main pipe 3, it can be discharged to the combustion end through the exhaust pipe 705. At this time, the air can be fully heated and utilized.

[0037] In this embodiment, the internal temperature of the main pipeline 3 is detected by two groups of temperature sensors 8. After the temperature sensor 8 near one end of the blowing device 2 detects that the temperature is appropriate, its valve 706 is closed and the preheating mechanism 7 is not started. When the temperature sensor 8 detects that the temperature is low, preheating can be achieved by starting the heat circulation pump 701, and the temperature sensor 8 away from the side of the blowing device 2 can detect whether the preheating temperature is appropriate. If it is appropriate, it is maintained. If it is not appropriate, it is adjusted by the flow speed of the heat circulation pump 701. The controller used in this device (not shown in the figure) is an external device. At the same time, it is a prior art product, so it will not be described in detail. The aluminum preheating tube 704 has good heat dissipation quality, and the preheating tube 704 is spirally arranged on the outside of the main pipeline 3. At this time, it can be ensured that the air inside the main pipeline 3 is effectively heated.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ventilation cooling structure for the cooling section of a tunnel kiln, characterized by: It includes a tunnel kiln (1), a blast device (2) and a main pipeline (3); The output end of the blast device (2) is connected to a main pipe (3), a preheating mechanism (7) is installed on the outside of the main pipe (3), and a temperature sensor (8) for detecting the temperature of the gas inside the main pipe (3) is also installed on the outside of the main pipe (3), the other end of the main pipe (3) is connected to a kiln inner wall pipe (5), the outside of the main pipe (3) is connected to two groups of side pipes (4), and the other ends of the side pipes (4) are connected to the kiln inner wall pipe (5); The kiln inner wall pipe (5) is installed on the inner wall of the tunnel kiln (1), and the outer side of the kiln inner wall pipe (5) is connected to uniformly distributed exhaust nozzles (6).

2. The ventilation cooling structure of the tunnel kiln cooling section according to claim 1, characterized in that: The input end of the air blowing device (2) is connected to an air inlet pipe (9), and the other end of the air inlet pipe (9) is connected to a filter screen (10).

3. The ventilation cooling structure of the tunnel kiln cooling section according to claim 1, characterized in that: The preheating mechanism (7) includes a heat circulation pump (701), a heat input pipe (702) and a heat output pipe (703); one side of the heat circulation pump (701) is connected to the heat input pipe (702), and the other end of the heat input pipe (702) is connected to the high-temperature zone of the tunnel kiln (1); the other side of the heat circulation pump (701) is connected to the heat output pipe (703), and the other end of the heat output pipe (703) is connected to the preheating pipe (704); the other end of the preheating pipe (704) is connected to the discharge pipe (705), and the other end of the discharge pipe (705) is connected to the combustion end of the tunnel kiln (1); The preheating pipe (704) is arranged outside the main pipeline (3).

4. The ventilation cooling structure of the tunnel kiln cooling section according to claim 3, characterized in that: The preheating tube (704) is arranged in a spiral shape and is made of an aluminum tube material.

5. The ventilation cooling structure of the cooling section of a tunnel kiln according to claim 3, characterized in that: A valve (706) is also installed on the outside of the heat output pipe (703).

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