Airflow guiding device utilizing tunnel kiln waste heat

Abstract

The utility model discloses a kind of airflow guiding device using tunnel kiln waste heat, including total pipeline, total pipeline is equipped with total valve, one end of total pipeline is connected with the one end of first shunt pipe, second shunt pipe and third shunt pipe respectively, wherein, the other end of first shunt pipe and third shunt pipe is connected with the lateral surface of kiln body respectively, and the other end of second shunt pipe is connected with the top end of kiln body.The utility model can ensure the uniformity of air temperature in kiln body by first shunt pipe, third shunt pipe and second shunt pipe respectively guiding tunnel kiln waste heat from two sides and above of kiln body.

Description

Technical Field

[0001] This utility model belongs to the field of waste heat utilization technology of tunnel kilns, and specifically relates to an airflow guiding device that utilizes waste heat from tunnel kilns. Background Technology

[0002] A tunnel kiln generally refers to a type of long, straight, linear tunnel kiln. After heating at the kiln tail stops, the temperature is typically lowered gradually through natural or water cooling. This results in wasted heat at the kiln tail, which is detrimental to energy conservation, emission reduction, and cost reduction. Therefore, utilizing the waste heat at the kiln tail can achieve energy conservation, emission reduction, and lower production costs.

[0003] The principle of waste heat utilization at the kiln tail is to transport hot air to the utilization point. However, existing waste heat utilization devices for tunnel kilns can easily lead to uneven heating inside the kiln, thus affecting the firing of products. Utility Model Content

[0004] The purpose of this invention is to provide an airflow guiding device that utilizes the waste heat of a tunnel kiln, thereby solving the problems mentioned in the background section. The airflow guiding device provided by this invention, utilizing the waste heat of a tunnel kiln, ensures uniform inlet air temperature.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an airflow guiding device utilizing waste heat from a tunnel kiln, comprising a main pipe, a main valve installed on the main pipe, one end of the main pipe being connected to one end of a first branch pipe, a second branch pipe, and a third branch pipe respectively, wherein the other ends of the first branch pipe and the third branch pipe are respectively connected to the side of the kiln body, and the other end of the second branch pipe is connected to the top of the kiln body.

[0006] In order to divert the hot air and make the temperature inside the kiln more uniform, the kiln body is further provided with an upper baffle corresponding to the second diversion pipe, and the kiln body is also provided with side baffles corresponding to the first diversion pipe and the third diversion pipe respectively.

[0007] To better facilitate flow, the upper baffle is further designed as an upward-arching arc structure.

[0008] To make the air intake more uniform and reduce the airflow velocity, several horizontal strip-shaped through slots are further provided on the side baffle.

[0009] To utilize air pressure to deliver hot air into the kiln and ensure a uniform temperature inside the kiln, at least two top air inlets are located on the sides of the upper baffle. Side air inlets are located below the side baffles on the sides of the kiln. Fans are installed at the air inlet ends of both the top and side air inlets.

[0010] To further regulate the temperature at the upper and lower ends of the kiln body, a second diversion valve is installed on the second diversion pipe. A first diversion valve is installed on the first diversion pipe, and a third diversion valve is installed on the third diversion pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model introduces the waste heat of the tunnel kiln from both sides and the top of the kiln body through the first diversion pipe, the third diversion pipe and the second diversion pipe respectively, which can ensure the uniformity of the temperature inside the kiln.

[0013] 2. By setting up the upper baffle and the side baffle, the hot air can enter from the sides of the upper baffle and the side baffle, which can guide the hot air and make the temperature inside the kiln more uniform, avoid the heat from concentrating in local areas, and also prevent the hot air from blowing directly on the product, resulting in poor product appearance.

[0014] 3. The side baffle of this utility model is provided with three horizontal strip-shaped through grooves, which on the one hand makes the air intake more uniform, and on the other hand reduces the airflow velocity.

[0015] 4. The kiln body of this utility model is provided with two top air inlets located on the side of the upper baffle, and a side air inlet located below the side baffle on the side of the kiln body. Fans are installed on the air inlet ends of both the top air inlet and the side air inlet to transport hot air into the interior of the kiln body using air pressure, so as to ensure the uniformity of the internal temperature of the kiln body.

[0016] 5. The second diversion pipe of this utility model is equipped with a second diversion valve, the first diversion pipe is equipped with a first diversion valve, and the third diversion pipe is equipped with a third diversion valve. By reducing the second diversion valve, the airflow at the first diversion pipe and the third diversion pipe can be increased, thereby reducing the temperature at the upper end of the kiln body and increasing the temperature at the lower end of the kiln body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the side baffle of this utility model.

[0019] In the diagram: 1. Kiln body; 2. Side baffle; 21. Through groove; 3. Side air inlet; 4. First diversion valve; 5. First diversion pipe; 6. Second diversion valve; 7. Second diversion pipe; 8. Main pipe; 9. Main valve; 10. Upper baffle; 11. Top air inlet; 12. Third diversion pipe; 13. Third diversion valve; 14. Fan. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] Please see Figures 1-2 The present invention provides the following technical solution: an airflow guiding device utilizing the waste heat of a tunnel kiln, comprising a main pipe 8, on which a main valve 9 is installed. By adjusting the size of the main valve 9, the overall airflow of hot gas can be reduced or increased, thereby regulating the overall temperature inside the kiln body 1. One end of the main pipe 8 is connected to one end of the first diversion pipe 5, the second diversion pipe 7, and the third diversion pipe 12, respectively. The other end of the main pipe 8 is connected to the exhaust end of the kiln tail of the tunnel kiln. The other ends of the first diversion pipe 5 and the third diversion pipe 12 are respectively connected to the side of the kiln body 1, and the other end of the second diversion pipe 7 is connected to the top of the kiln body 1.

[0023] By adopting the above technical solution, this utility model introduces the waste heat of the tunnel kiln from both sides and the top of the kiln body 1 through the first diversion pipe 5, the third diversion pipe 12 and the second diversion pipe 5 respectively, which can ensure the uniformity of the temperature inside the kiln body 1.

[0024] Specifically, the interior of the kiln body 1 is provided with an upper baffle 10 corresponding to the second diversion pipe 7, and the interior of the kiln body 1 is also provided with side baffles 2 corresponding to the first diversion pipe 5 and the third diversion pipe 12 respectively.

[0025] By adopting the above technical solution, the hot air can enter from the sides of the upper baffle 10 and the side baffle 2 through the setting of the upper baffle 10 and the side baffle 2, which can guide the hot air and make the temperature inside the kiln body 1 more uniform, avoid heat concentration in local areas, and also prevent hot air from blowing directly onto the product, resulting in poor product appearance.

[0026] Specifically, the upper baffle 10 is an upward-arching arc-shaped structure.

[0027] By adopting the above technical solutions, we can better attract traffic.

[0028] Example 2

[0029] The difference between this embodiment and embodiment 1 is that, specifically, the side baffle 2 is provided with three horizontal strip-shaped through grooves 21.

[0030] By adopting the above technical solutions, the air intake can be made more uniform on the one hand, and the airflow velocity can be reduced on the other hand.

[0031] Example 3

[0032] The difference between this embodiment and embodiment 1 is that: specifically, two top air inlets 11 located on the side of the upper baffle 10 are provided above the kiln body 1; a side air inlet 3 located below the side baffle 2 is provided on the side of the kiln body 1; and a fan 14 is installed on the air inlet end of both the top air inlet 11 and the side air inlet 3.

[0033] By adopting the above technical solution, hot air is transported to the interior of the kiln body 1 using air pressure, thus ensuring the uniformity of the internal temperature of the kiln body 1.

[0034] Example 4

[0035] The difference between this embodiment and embodiment 1 is that, specifically, a second diversion valve 6 is installed on the second diversion pipe 7, a first diversion valve 4 is installed on the first diversion pipe 5, and a third diversion valve 13 is installed on the third diversion pipe 12.

[0036] By adopting the above technical solution, by reducing the second diversion valve 6, the airflow at the first diversion pipe 5 and the third diversion pipe 12 can be increased, thereby reducing the temperature at the upper end of the kiln body 1 and increasing the temperature at the lower end of the kiln body 1, and vice versa.

[0037] In summary, this invention, through the first diversion pipe 5, the third diversion pipe 12, and the second diversion pipe 5, respectively introduces the waste heat of the tunnel kiln from both sides and the top of the kiln body 1, ensuring the uniformity of the temperature inside the kiln body 1. The invention, through the setting of the upper baffle 10 and the side baffle 2, allows hot air to enter from the sides of the upper baffle 10 and the side baffle 2, which can guide the hot air flow, making the temperature inside the kiln body 1 more uniform, avoiding heat concentration in localized areas, and preventing hot air from directly blowing onto the product, resulting in poor product appearance. The side baffle 2 of this invention has three horizontal strip-shaped through slots 21, which on the one hand makes the air intake more uniform, and on the other hand reduces the airflow velocity. The kiln body 1 of this invention has two top air inlets 11 located on the side of the upper baffle 10, and a side air inlet 3 located below the side baffle 2. Fans 14 are installed on the air inlets of both the top air inlets 11 and the side air inlets 3 to transport hot air into the interior of the kiln body 1 using air pressure, ensuring a consistent internal temperature. A second diversion valve 6 is installed on the second diversion pipe 7. A first diversion valve 4 is installed on the first diversion pipe 5, and a third diversion valve 13 is installed on the third diversion pipe 12. By reducing the pressure of the second diversion valve 6, the airflow at the first diversion pipe 5 and the third diversion pipe 12 can be increased, thereby reducing the temperature at the upper end of the kiln body 1 and increasing the temperature at the lower end of the kiln body 1.

[0038] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An airflow guiding device utilizing waste heat from a tunnel kiln, characterized in that: It includes a main pipeline, on which a main valve is installed. One end of the main pipeline is connected to one end of the first branch pipe, the second branch pipe, and the third branch pipe, respectively. The other ends of the first and third branch pipes are connected to the side of the kiln body, and the other end of the second branch pipe is connected to the top of the kiln body.

2. The airflow guiding device utilizing waste heat from a tunnel kiln according to claim 1, characterized in that: The interior of the kiln body is provided with an upper baffle corresponding to the second diversion pipe, and the interior of the kiln body is also provided with side baffles corresponding to the first diversion pipe and the third diversion pipe respectively.

3. The airflow guiding device utilizing waste heat from a tunnel kiln according to claim 2, characterized in that: The upper baffle is an upward-arching arc-shaped structure.

4. The airflow guiding device utilizing waste heat from a tunnel kiln according to claim 2, characterized in that: The side baffle is provided with several horizontal strip-shaped through slots.

5. The airflow guiding device utilizing waste heat from a tunnel kiln according to claim 2, characterized in that: The kiln body is provided with at least two top air inlets located on the side of the upper baffle.

6. The airflow guiding device utilizing waste heat from a tunnel kiln according to claim 5, characterized in that: The side of the kiln body is provided with a side air inlet located below the side baffle.

7. The airflow guiding device utilizing waste heat from a tunnel kiln according to claim 6, characterized in that: Fans are installed on the air inlet ends of both the top air inlet and the side air inlet.

8. The airflow guiding device utilizing waste heat from a tunnel kiln according to claim 1, characterized in that: A second diversion valve is installed on the second diversion pipe.

9. The airflow guiding device utilizing waste heat from a tunnel kiln according to claim 1, characterized in that: A first diversion valve is installed on the first diversion pipe, and a third diversion valve is installed on the third diversion pipe.

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