Tunnel kiln wind-avoiding slow cooling equipment

Abstract

The utility model relates to high temperature calcination production technical field, concretely is a kind of tunnel kiln wind-avoiding slow cooling equipment, including heat conduction structure, the front section and rear section of heat conduction mechanism connection tunnel kiln cooling section, wherein the side of cooling section close to firing section is front section, the side of cooling section close to discharge port is rear section, further including slow wind plate and slow wind plate frame, wherein slow wind plate frame is set at the discharge port of tunnel kiln cooling section, and slow wind plate is set on slow wind plate frame. By being provided with slow wind plate and slow wind plate frame at the discharge port of cooling section, the temperature difference of the front section and rear section of tunnel kiln cooling section is made smaller under the joint action with heat conduction structure, ensure that material slowly, uniform speed cooling, solve the technical problem that material is cooled too fast in cooling section and leads to burst, fragmentation in prior art.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature calcination production technology, specifically to a device for slow cooling of a calcination tunnel kiln by avoiding drafts. Background Technology

[0002] Tunnel kilns are mainly used for high-temperature industrial calcination production. They include a drying section, a firing section, and a cooling section. The drying section operates at approximately 300°C and is used to remove moisture from the material to be calcined, preventing excessive water vapor generation during calcination. The firing section is the high-temperature section of the tunnel kiln, where the material undergoes a series of physical and chemical reactions. The cooling section is where the material exits the kiln after high-temperature calcination. In current technology, cold air is usually introduced into the cooling section to rapidly reduce the temperature and facilitate quick exit. However, for some types of powders (such as powders containing a small amount of petroleum coke), calcination creates tiny pores inside. If such materials are rapidly cooled, they may experience widespread fragmentation and cracking, ultimately leading to accidents such as kiln collapse or blockage.

[0003] The existing utility model patent with authorization publication number CN217877031U discloses a kiln rapid cooling section cooling device, including a frame with a cooling chamber inside. A first rapid cooling mechanism is arranged on one side of the frame, and a second rapid cooling mechanism is arranged on the other side of the frame. The first and second rapid cooling mechanisms pass through the cooling chamber. Two sets of rapid cooling mechanisms are arranged outside the frame, and a thermocouple is arranged at the center of the second rapid cooling mechanism. Although the above structure has high efficiency in cooling materials, due to its rapid cooling, some materials are prone to cracking and bursting during the cooling process. Utility Model Content

[0004] To address the technical problem of materials easily breaking and exploding during partial cooling in existing tunnel kilns, this invention proposes a windproof and slow cooling device for tunnel kilns.

[0005] The tunnel kiln wind-sheltered slow cooling equipment includes a heat-conducting structure that connects the front and rear sections of the tunnel kiln cooling section. The side of the cooling section closer to the firing section is the front section, and the side of the cooling section closer to the discharge port is the rear section. It also includes a wind-slowing plate and a wind-slowing plate frame. The wind-slowing plate frame is located at the discharge port of the tunnel kiln cooling section, and the wind-slowing plate is located on the wind-slowing plate frame.

[0006] The aforementioned tunnel kiln wind-avoiding and slow-cooling equipment also includes a wind-retarding plate track, which is located at the bottom of the wind-retarding plate frame, and the wind-retarding plate is movably mounted on the wind-retarding plate track.

[0007] The aforementioned tunnel kiln windproof slow cooling equipment includes a heat-conducting structure comprising a heat-conducting pipe, a heat-inducing hole, a heat-conducting hole, and a fan. The heat-conducting pipe is located at the top of the tunnel kiln, the heat-inducing hole is located at the top of the front section of the cooling section of the tunnel kiln, and the heat-conducting hole is located at the top of the rear section of the cooling section of the tunnel kiln. The heat-conducting pipe is connected to the cooling section of the tunnel kiln via the heat-inducing hole and the heat-conducting hole, and the fan is connected to the heat-conducting pipe.

[0008] The aforementioned tunnel kiln wind-avoiding and slow-cooling equipment has two wind-control plates, which are arranged side by side on the wind-control plate track.

[0009] The beneficial effects of this utility model include: by setting up a wind-reducing plate and a wind-reducing plate frame, the temperature difference between the front and rear sections of the cooling section of the tunnel kiln is reduced under the combined action of the heat-conducting structure, ensuring that the material cools down slowly and uniformly, thus solving the technical problem in the prior art that the material cools down too quickly in the cooling section, resulting in cracking and breakage. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the tunnel kiln wind-avoiding and slow cooling equipment of this utility model.

[0011] Figure 2 This is a side view of Embodiment 1 of the tunnel kiln wind-avoiding and slow cooling equipment of this utility model.

[0012] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the tunnel kiln wind-avoiding and slow cooling equipment of this utility model.

[0013] The diagram is labeled as follows: 1-heat conduction structure, 11-heat conduction pipe, 12-heat extraction hole, 13-heat conduction hole, 14-fan, 2-wind deceleration plate, 3-wind deceleration plate frame, 4-wind deceleration plate track. Detailed Implementation

[0014] The present invention will now be described in conjunction with the accompanying drawings.

[0015] Example 1:

[0016] like Figures 1-2 As shown, the tunnel kiln windproof and slow cooling device of this utility model includes a heat-conducting structure 1, which connects the front and rear sections of the cooling section of the tunnel kiln. The side of the cooling section closer to the firing section is the front section, and the side of the cooling section closer to the discharge port is the rear section. It also includes a wind-slowing plate 2 and a wind-slowing plate frame 3. The wind-slowing plate frame 3 is set at the discharge port of the cooling section of the tunnel kiln, and the wind-slowing plate 2 is set on the wind-slowing plate frame 3. While the heat-conducting structure 1 balances the temperature of the front and rear sections of the cooling section, the wind-slowing plate can reduce the air exchange between the cooling section and the outside.

[0017] Furthermore, the heat-conducting structure includes a heat-conducting pipe 11, a heat-drawing hole 12, a heat-conducting hole 13, and a fan 14. The heat-conducting pipe 11 is located at the top of the tunnel kiln, the heat-drawing hole 12 is located at the top of the front section of the cooling section of the tunnel kiln, and the heat-conducting hole 13 is located at the top of the rear section of the cooling section of the tunnel kiln. The heat-conducting pipe 11 is connected to the cooling section of the tunnel kiln through the heat-drawing hole 12 and the heat-conducting hole 13, thereby transferring some of the heat in the front section of the cooling section with a higher temperature to the rear section of the cooling section with a lower temperature. The fan 14 is connected to the heat-conducting pipe 11 and also plays a role in promoting the circulation of hot air.

[0018] When this embodiment is put into use, technicians need to pre-set the position of the wind deflector plate 2 and the operating power of the fan 14 according to the working conditions. During the operation of the cooling section, the material in the calcination section enters the cooling section. While the cooling section cools the material, the temperature of its front section gradually increases. Under the action of the fan 14, some hot air enters the heat pipe 11 through the heat inlet hole 12 and enters the rear section of the cooling section through the heat inlet hole 13. At the same time, the wind deflector plate 2 on the wind deflector plate frame 3 at the outlet of the cooling section effectively blocks the entry of cold air from the outside. Through the combined action of the above structures, the temperature difference between the front and rear sections of the cooling section is maintained at a certain level, thereby preventing some materials from cracking or exploding due to excessively rapid temperature drop.

[0019] Example 2:

[0020] Based on the tunnel kiln windproof slow cooling device described in Example 1, the tunnel kiln windproof slow cooling device of this utility model further includes a wind-reducing plate track 4. The wind-reducing plate track 4 is set at the bottom of the wind-reducing plate frame 3, and the wind-reducing plate 2 is movably set on the wind-reducing plate track 4, so as to facilitate the adjustment of the relative position of the wind-reducing plate 2 and the outlet of the cooling section, i.e., the opening degree of the wind-reducing plate 2, according to the requirements.

[0021] Furthermore, the wind deflector 2 is configured as two pieces, arranged side by side on the wind deflector track 4, so that the two wind deflector 2 can be closed or opened, making it easier to adjust the opening degree of the wind deflector 2.

[0022] When this embodiment is put into use, technicians can easily adjust the two wind deflectors 2 at the outlet of the cooling section through the wind deflector track 4.

[0023] Compared with the existing technology, the tunnel kiln windproof slow cooling device proposed in this utility model has the following advantages: by setting up wind-reducing plates and wind-reducing plate frames, the temperature difference between the front and rear sections of the tunnel kiln cooling section is reduced, ensuring that the material cools down slowly and uniformly, thus solving the technical problem in the existing technology that the material cools down too quickly in the cooling section, resulting in cracking and breakage.

Claims

1. A device for avoiding wind and slow cooling of a tunnel kiln, comprising a heat-conducting structure (1) connecting the front section and the rear section of the cooling section of the tunnel kiln, wherein the side of the cooling section closer to the firing section is the front section, and the side of the cooling section closer to the discharge port is the rear section, characterized in that: It also includes a slow air plate (2) and a slow air plate frame (3), wherein the slow air plate frame (3) is located at the outlet of the cooling section of the tunnel kiln, and the slow air plate (2) is located on the slow air plate frame (3).

2. The tunnel kiln windproof and slow cooling device according to claim 1, characterized in that: It also includes a wind deflector track (4), which is located at the bottom of the wind deflector frame (3), and the wind deflector (2) is movably mounted on the wind deflector track (4).

3. The tunnel kiln windproof slow cooling device according to claim 2, characterized in that: The wind deflector plate (2) is configured as two pieces, which are arranged side by side on the wind deflector plate track (4).

4. The tunnel kiln windproof and slow cooling device according to claim 1, characterized in that: The heat-conducting structure (1) includes a heat-conducting pipe (11), a heat-drawing hole (12), a heat-conducting hole (13), and a fan (14). The heat-conducting pipe (11) is located at the top of the tunnel kiln. The heat-drawing hole (12) is located at the top of the front section of the cooling section of the tunnel kiln. The heat-conducting hole (13) is located at the top of the rear section of the cooling section of the tunnel kiln. The heat-conducting pipe (11) is connected to the cooling section of the tunnel kiln through the heat-drawing hole (12) and the heat-conducting hole (13). The fan (14) is connected to the heat-conducting pipe (11).

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