CN219141510U - Quenching device, multi-stage cooling device and tunnel kiln - Google Patents

Abstract

The utility model discloses a quenching device, a multi-stage cooling device and a tunnel kiln, wherein the quenching device is used for cooling a plurality of crucibles, and a gap is formed between every two adjacent crucibles; the quenching device comprises a quenching furnace wall and an air wall assembly, wherein the two quenching furnace walls are arranged at intervals, and a quenching channel for a crucible to pass through is formed between the two quenching furnace walls; the air wall subassembly is located the entry end of quenching passageway, the air wall subassembly includes quench fan, first pipeline and the return air pipeline of blowing, quench fan locates the quenching furnace wall, and connect first pipeline and the return air pipeline of blowing respectively, part first pipeline and part return air pipeline stretch into the quenching passageway, first pipeline and the return air pipeline set up relatively, and first pipeline and the cold wind that the return air pipeline flowed out form the air wall, the air wall is used for blockking the outer temperature of quenching device, thereby rapidly cooling crucible and goods, also can effectively avoid the smoke and dust to get into cooling system in, guarantee the cooling efficiency of raw and other materials.

Description

Quenching device, multi-stage cooling device and tunnel kiln

Technical Field

The utility model relates to the technical field of tunnel kilns, in particular to a quenching device, a multi-stage cooling device and a tunnel kiln.

Background

The tunnel kiln is a process for producing graphite cathode materials, and mainly comprises the steps of carbonizing raw materials at high temperature and removing volatile matters in the raw materials in a high-temperature roasting mode. The raw materials are placed in a crucible, and after high-temperature roasting, the raw materials need to be cooled, and then the raw materials enter the subsequent working procedures. In the prior art, a three-stage cooling mode is adopted to cool the crucible step by step, and although a certain cooling process curve is ensured, high-temperature flue gas in the roasting kiln easily enters a cooling system in a quenching area, so that a larger cold-hot temperature difference is caused, and the expected cooling effect cannot be achieved.

Disclosure of Invention

The utility model mainly aims to provide a quenching device, a multi-stage cooling device and a tunnel kiln, and aims to solve the technical problem that a quenching area in the tunnel kiln cannot isolate high-temperature air flow in a roasting kiln, so that a larger cold-hot temperature difference is caused, and an expected cooling effect cannot be achieved.

In order to achieve the above object, the present utility model provides a quenching apparatus for cooling a plurality of crucibles, a gap being formed between every two adjacent crucibles; the quenching device comprises two quenching furnace walls and at least one air wall assembly, wherein the two quenching furnace walls are arranged at intervals, and a quenching channel for the crucible to pass through is formed between the two quenching furnace walls; at least one the wind wall subassembly is located the entry end of quenching passageway, the wind wall subassembly includes quench fan, first pipeline of blowing and return air pipeline, quench fan is located quench wall, and connect respectively first pipeline of blowing with the return air pipeline, part first pipeline of blowing and part the return air pipeline stretches into the quenching passageway, first pipeline of blowing with the return air pipeline sets up relatively, just first pipeline of blowing with the cold wind that the return air pipeline flows forms the wind wall, the wind wall is used for stopping the outside temperature of quenching device.

In an embodiment, the quenching device further comprises a plurality of air wall assemblies, the air wall assemblies are arranged between the inlet end and the outlet end of the quenching channel at intervals, the first air blowing pipeline is opposite to the gap, and the air return pipeline is opposite to the center of the crucible.

In an embodiment, the first air blowing pipelines and the air return pipelines are arranged on the two quenching furnace walls, and the first air blowing pipelines and the air return pipelines on the same quenching furnace wall are arranged in a staggered manner;

in one embodiment, the outlet end of the quench passage is provided with the air wall assembly.

In one embodiment, the quenching furnace wall comprises a refractory brick layer, a fiber cotton layer and a refractory plate which are sequentially arranged from inside to outside;

in an embodiment, the cold air flowing out of the first air blowing pipeline and the air return pipeline is a protective atmosphere.

In an embodiment, the quenching device further comprises a control system and a temperature sensor, wherein the control system is respectively and electrically connected with the quenching fan and the temperature sensor, and the temperature sensor is arranged on the quenching channel to adjust the wind flow of the wind wall according to the detected temperature.

In order to achieve the above purpose, the utility model provides a multi-stage cooling device, which comprises a quenching device, a slow cooling device, a quick cooling device and an air cooling device, wherein the quenching device, the slow cooling device, the quick cooling device and the air cooling device are sequentially connected.

In an embodiment, the slow cooling device comprises two slow cooling furnace walls, the two slow cooling furnace walls are arranged at intervals, and a slow cooling channel communicated with the quenching channel is formed between the two slow cooling furnace walls; and a cooling pipeline is arranged in the slow cooling furnace wall, a plurality of cooling fins are arranged along the extending direction of the cooling pipeline, and at least one vent hole is arranged between every two adjacent cooling fins.

In an embodiment, the quick cooling device comprises two quick cooling furnace walls, an external cooling fan, a plurality of second air blowing pipelines and an air inducing structure, wherein the two quick cooling furnace walls are arranged at intervals, and a quick cooling channel communicated with the slow cooling channel is formed between the two quick cooling furnace walls; the second air blowing pipelines are arranged on the quick cooling furnace wall at intervals and are connected with the external cooling fan, the second air blowing pipelines are used for conveying outside air to the gap, and the induced air structure is used for discharging hot air.

In an embodiment, the air cooling device comprises two air cooling furnace walls, the two air cooling furnace walls are arranged at intervals, and an air cooling channel communicated with the quick cooling channel is formed between the two air cooling furnace walls; the air-cooled furnace wall is provided with an induced draft fan or an axial flow fan, and the induced draft fan or the axial flow fan is communicated with the outside atmosphere so as to cool the crucible in the air-cooled channel.

In order to achieve the above purpose, the utility model provides a tunnel kiln, which comprises the multi-stage cooling device and a sintering device, wherein the sintering device is arranged at one end of the tunnel kiln, which is close to the inlet end of the quenching channel.

According to the technical scheme, the first air blowing pipeline and the air return pipeline are arranged at the inlet end of the quenching device, cold air flowing out of the first air blowing pipeline and the air return pipeline forms an air wall, and the air wall can block the temperature brought by the sintering device of the tunnel kiln, so that the crucible and products can be cooled rapidly, smoke dust can be prevented from entering a cooling system effectively, and the cooling efficiency of raw materials is guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a top view of a quench apparatus in accordance with an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a quench apparatus according to an embodiment of the present utility model;

FIG. 3 is a top view of a multi-stage cooling device according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a cooling pipeline according to an embodiment of the present utility model;

fig. 5 is a top view of a tunnel kiln in accordance with an embodiment of the utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Meanwhile, the meaning of "and/or" and/or "appearing throughout the text is to include three schemes, taking" a and/or B "as an example, including a scheme, or B scheme, or a scheme that a and B satisfy simultaneously.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1-5 in combination, the present utility model provides a quenching apparatus 100 for cooling a plurality of crucibles 10, wherein a gap 101 is formed between every two adjacent crucibles 10. The quenching apparatus 100 includes two quenching furnace walls 11 and at least one air wall assembly 12, the two quenching furnace walls 11 being spaced apart and a quench passage 111 being formed between the two quenching furnace walls 11 for passage of the crucible 10. At least one air wall assembly 12 is disposed at the inlet end 112 of the quench passage 111, the air wall assembly 12 comprises a quench fan, a first air blowing pipeline 121 and a return air pipeline 122, the quench fan is disposed at the quench wall 11 and is respectively connected with the first air blowing pipeline 121 and the return air pipeline 122, a part of the first air blowing pipeline 121 and a part of the return air pipeline 122 extend into the quench passage 111, the first air blowing pipeline 121 and the return air pipeline 122 are oppositely disposed, and cold air flowing out of the first air blowing pipeline 121 and the return air pipeline 122 forms an air wall, and the air wall is used for blocking the temperature outside the quench device 100.

In this embodiment, by providing the first air blowing pipe 121 and the air return pipe 122 at the inlet end 112 of the quenching device 100, the cold air flowing out of the first air blowing pipe 121 and the air return pipe 122 forms an air wall, which can block the temperature brought by the sintering device 500 of the tunnel kiln 1, thereby rapidly cooling the crucible 10 and the product, effectively avoiding the smoke dust from entering the quenching device 100, and ensuring the cooling efficiency of the raw materials.

Referring to fig. 1 in combination, in one embodiment, the quenching apparatus 100 further includes a plurality of air wall assemblies 12, wherein the plurality of air wall assemblies 12 are disposed between the inlet end 112 and the outlet end 113 of the quenching channel 111 at intervals, the first air blast pipe 121 is disposed opposite the gap 101, and the air return pipe 122 is disposed opposite the center of the crucible 10.

In this embodiment, the plurality of air walls 12 form a plurality of air walls, and the plurality of air walls are used for blocking the temperature brought by the outside, and also can avoid the smoke dust from entering the quenching device 100, thereby improving the cooling effect, ensuring more uniform cooling, and avoiding the condition that the crucible 10 is damaged due to direct blowing of cooling air into the crucible 10.

Referring to fig. 1 in combination, in an embodiment, the first air blowing pipes 121 and the air return pipes 122 are disposed on two quenching furnace walls 11, and the first air blowing pipes 121 and the air return pipes 122 on the same quenching furnace wall 11 are staggered.

In this embodiment, under the whole effect that first blast pipe 121 and return air pipe 122 crisscross the setting, can make the cooling wind in this space flow through each position of crucible 10, promote the cooling effect, the cooling is more even to avoided the cooling wind to blow crucible 10 directly, caused the circumstances of crucible 10 damage.

Referring to FIG. 1 in combination, in one embodiment, the outlet end 113 of the quench passage 111 is provided with a wind wall assembly 12.

In this embodiment, the air walls are respectively disposed at the inlet end and the outlet end 113 of the quenching channel 111, so that the region is in a relatively isolated space, the temperature of the region is prevented from diffusing to other spaces, and the cooling effect is enhanced.

Referring to FIG. 2 in combination, to further inhibit temperature exchange between the interior and exterior of the quench apparatus 100 and to enhance cooling, in one embodiment, the quench wall 11 includes a layer of refractory bricks 114, a layer of fiber wool 115, and a layer of refractory slab 116 disposed in sequence from the interior to the exterior.

Referring to fig. 1 in combination, in an embodiment, the cool air flowing out of the first air blowing duct 121 and the air returning duct 122 is a protective atmosphere.

In this embodiment, the protective atmosphere is other protective atmosphere such as nitrogen or air, and is not limited herein.

Referring to fig. 1 in combination, in order to more precisely control the temperature in the quenching apparatus 100, in an embodiment, the quenching apparatus 100 further includes a control system and a temperature sensor, wherein the control system is electrically connected to the quenching fan and the temperature sensor, respectively, and the temperature sensor is disposed in the quenching channel 111 to adjust the air flow of the air wall according to the detected temperature.

Referring to fig. 1-5 in combination, the present utility model further provides a multi-stage cooling apparatus 1000, where the multi-stage cooling apparatus 1000 includes the above-mentioned quenching apparatus 100, and the quenching apparatus 100, the slow cooling apparatus 200, the fast cooling apparatus 300 and the air cooling apparatus 400 are sequentially connected. The specific structure of the quenching device 100 refers to the foregoing embodiments, and since the multi-stage cooling device 1000 adopts all the technical solutions of all the foregoing embodiments, at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, and will not be described in detail herein.

Referring to fig. 3 in combination, in an embodiment, the slow cooling device 200 includes two slow cooling furnace walls 20, the two slow cooling furnace walls 20 are disposed at intervals, and a slow cooling channel 21 communicating with the quenching channel 111 is formed between the two slow cooling furnace walls 20. A cooling pipeline 22 is arranged in the slow cooling furnace wall 20, a plurality of cooling fins 23 are arranged along the extending direction of the cooling pipeline 22, and at least one vent hole is arranged between every two adjacent cooling fins 23.

In this embodiment, the slow cooling device 200 adopts a heat exchange cooling mode, through the cooling pipeline 22 arranged on the slow cooling furnace wall 20, hot gas in the quenching channel 111 is sucked through the vent holes on the surface of the cooling pipeline 22, and the cooling fins 23 take away heat in the quenching channel 111, so that the heat exchange effect is achieved, the product is indirectly cooled, and the crucible 10 is prevented from cracking and damaging.

Referring to fig. 3 in combination, in an embodiment, a quick cooling device 300 of the quick cooling device 300 includes two quick cooling furnace walls 30, an external cooling fan, a plurality of second air blowing pipes 31 and an air guiding structure, the two quick cooling furnace walls 30 are disposed at intervals, and a quick cooling channel 32 communicating with the slow cooling channel 21 is formed between the two quick cooling furnace walls 30. The second air blowing pipelines 31 are arranged on the quick cooling furnace wall 30 at intervals and are connected with an external cooling fan, the second air blowing pipelines 31 are used for conveying outside air to the gap 101, and the induced air structure is used for discharging hot air.

In this embodiment, the second air blast pipe 31 sprays cool air outside the furnace to the intermittent portion 11 of the crucible 10 to rapidly cool the product.

Referring to fig. 3 in combination, in an embodiment, the air cooling device 400 includes two air cooling furnace walls 40, the two air cooling furnace walls 40 are spaced apart, and an air cooling channel 41 communicating with the quick cooling channel 32 is formed between the two air cooling furnace walls 40. The air cooling furnace wall 40 is provided with an induced draft fan 42 or an axial flow fan, and the induced draft fan 42 or the axial flow fan is communicated with the outside atmosphere to cool the crucible 10 in the air cooling channel 41.

In the embodiment, through arranging draught fans or axial flow fans on furnace walls at two sides of the hearth, the draught fans or the axial flow fans are communicated with the outside atmosphere so as to meet the cooling requirement.

Referring to fig. 1 to 5 in combination, the present utility model further provides a tunnel kiln 1, where the tunnel kiln 1 includes a terminal and the above-mentioned multi-stage cooling device 1000, and the sintering device 500 is disposed at one end of the tunnel kiln 1 adjacent to the inlet end 112 of the quenching channel 111, and the specific structure of the multi-stage cooling device 1000 refers to the foregoing embodiment, and since the multi-stage cooling device 1000 adopts all the technical solutions of all the foregoing embodiments, at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, and will not be described in detail herein.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims (10)

1. A quenching device for cooling a plurality of crucibles, a gap being formed between each two adjacent crucibles; characterized in that the quenching device comprises:

the two quenching furnace walls are arranged at intervals, and a quenching channel for the crucible to pass through is formed between the two quenching furnace walls; and

at least one wind wall subassembly, at least one wind wall subassembly is located the entry end of quenching passageway, the wind wall subassembly includes quench fan, first pipeline and return air pipeline of blowing, quench fan is located quench furnace wall, and connect respectively first pipeline of blowing with the return air pipeline, part first pipeline of blowing and part the return air pipeline stretches into the quenching passageway, first pipeline of blowing with the return air pipeline sets up relatively, just first pipeline of blowing with the cold wind that the return air pipeline flows forms the wind wall, the wind wall is used for stopping the outside temperature of quenching device.

2. The quench apparatus of claim 1 further comprising a plurality of said air wall assemblies spaced between said quench passage inlet and outlet ends, said first air duct being disposed directly opposite said gap and said return air duct being disposed directly opposite said crucible center.

3. The quenching apparatus according to claim 2, wherein the first air-blowing pipeline and the air-returning pipeline are arranged on the two quenching furnace walls, and the first air-blowing pipeline and the air-returning pipeline on the same quenching furnace wall are arranged in a staggered manner;

and/or the outlet end of the quenching channel is provided with the air wall component.

4. A quench apparatus as claimed in any of claims 1 to 3, wherein the quench wall comprises a layer of refractory bricks, a layer of fibrous wool and a layer of refractory slabs in that order from the inside to the outside;

and/or the cold air flowing out of the first air blowing pipeline and the return air pipeline is a protective atmosphere.

5. A quench apparatus as claimed in any of claims 1 to 3, further comprising a control system and a temperature sensor, the control system being electrically connected to the quench blower and the temperature sensor, respectively, the temperature sensor being provided in the quench passage to adjust the wind flow of the wind wall in dependence on the detected temperature.

6. A multistage cooling device, characterized by comprising the quenching device, the slow cooling device, the rapid cooling device and the air cooling device as claimed in any one of claims 1 to 5, wherein the quenching device, the slow cooling device, the rapid cooling device and the air cooling device are sequentially connected.

7. The multi-stage cooling apparatus according to claim 6, wherein the slow cooling apparatus comprises two slow cooling furnace walls, the two slow cooling furnace walls are arranged at intervals, and a slow cooling channel communicating with the quenching channel is formed between the two slow cooling furnace walls; and a cooling pipeline is arranged in the slow cooling furnace wall, a plurality of cooling fins are arranged along the extending direction of the cooling pipeline, and at least one vent hole is arranged between every two adjacent cooling fins.

8. The multi-stage cooling device according to claim 7, wherein the quick cooling device comprises two quick cooling furnace walls, an external cooling fan, a plurality of second air blowing pipelines and an air inducing structure, the two quick cooling furnace walls are arranged at intervals, and a quick cooling channel communicated with the slow cooling channel is formed between the two quick cooling furnace walls; the second air blowing pipelines are arranged on the quick cooling furnace wall at intervals and are connected with the external cooling fan, the second air blowing pipelines are used for conveying outside air to the gap, and the induced air structure is used for discharging hot air.

9. The multi-stage cooling device according to claim 8, wherein the air cooling device comprises two air cooling furnace walls, the two air cooling furnace walls are arranged at intervals, and an air cooling channel communicated with the quick cooling channel is formed between the two air cooling furnace walls; the air-cooled furnace wall is provided with an induced draft fan or an axial flow fan, and the induced draft fan or the axial flow fan is communicated with the outside atmosphere so as to cool the crucible in the air-cooled channel.

10. A tunnel kiln comprising a multi-stage cooling device as claimed in any one of claims 6 to 9 and a sintering device disposed at an end of the tunnel kiln adjacent the quench passage inlet end.

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