Industrial cooling furnace

Abstract

The present invention discloses an industrial cooling furnace, comprising a furnace body, a guide plate, a guide roller, a circulation fan, and a plurality of heat exchange components, wherein the furnace body is formed with a sealed cooling chamber; the guide plate is arranged in the furnace body and divides the cooling chamber into a first area and a second area; the guide roller is supported by the furnace body and at least partially arranged in the first area, and the portion of the guide roller located in the first area is used to support the material to be cooled; the heat exchange component is fixed in the cooling chamber, part of the heat exchange component extends in the second area, and the remaining part of the heat exchange component extends in the first area; the circulation fan is arranged in the cooling chamber, including a first air outlet extending to the first area, and a second air outlet extending to the second area. The cooling furnace of the present invention can quickly reduce the temperature of the material, and the atmosphere in the furnace space will not change or be destroyed before the material is taken out, and has high stability.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial equipment, and in particular relates to an improved industrial cooling furnace. Background Art

[0002] In industrial production, materials typically need to be cooled after high-temperature calcination or other treatments before they can be removed from the furnace. Relying on natural cooling can be time-consuming. If the natural cooling time is too short, the material's exit temperature will be high, affecting normal equipment operation. Excessively high exit temperatures can also cause changes in the material itself, such as oxidation and water absorption. As the material cools within the furnace, the heat first heats the process gas (such as nitrogen, oxygen, air, or other gases). The heated nitrogen or oxygen then transfers heat to the finned tubes. This process is time-consuming and produces limited heat transfer.

[0003] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0004] The present invention aims to provide an improved industrial cooling furnace to solve the problem of cooling high-temperature materials.

[0005] In order to achieve the above-mentioned purpose, a specific embodiment of the present invention provides an industrial cooling furnace, including a furnace body, a guide plate, a guide roller, a circulation fan and a plurality of heat exchange elements, wherein the furnace body forms a closed cooling chamber; the guide plate is arranged in the furnace body and divides the cooling chamber into a first area and a second area; the guide roller is supported on the furnace body and is at least partially arranged in the first area, and the part of the guide roller located in the first area is used to support the material to be cooled; the heat exchange element is fixed in the cooling chamber, part of the heat exchange element extends in the second area, and the remaining part of the heat exchange element extends in the first area; the circulation fan is arranged in the cooling chamber, including a first air outlet extending to the first area, and a second air outlet extending to the second area.

[0006] In one or more embodiments of the present invention, the guide plate includes a bottom plate and a side plate extending upward from the edge of the bottom plate, the first area is formed between the bottom plate and the side plate, the second area is formed between the guide plate and the inner wall of the furnace body, and the area between the top wall of the furnace body and the top of the side plate, the first air outlet is opened above the bottom plate, and the second air outlet is located between the bottom plate and the bottom of the furnace body.

[0007] In one or more embodiments of the present invention, the heat exchange element includes a pipe extending into the first area or the second area, and a coolant flows in the pipe.

[0008] In one or more embodiments of the present invention, two pipe groups are vertically arranged above the side plates, and each pipe group includes a plurality of pipes arranged horizontally.

[0009] In one or more embodiments of the present invention, a plurality of the pipes arranged in a horizontal direction are provided between the bottom plate and the guide roller.

[0010] In one or more embodiments of the present invention, the pipe located above the side plate, or the pipe between the bottom plate and the guide roller is a straight pipe, which includes a first liquid inlet and a first liquid outlet extending to the outside of the two opposite side walls of the furnace body respectively.

[0011] In one or more embodiments of the present invention, a plurality of the pipes are provided between the side plate and the side wall of the furnace body.

[0012] In one or more embodiments of the present invention, the pipe between the side plate and the side wall of the furnace body is a U-shaped pipe, and the U-shaped pipe includes a second liquid inlet and a second liquid outlet extending out of the top wall of the furnace body.

[0013] In one or more embodiments of the present invention, the furnace further comprises a hollow jacket attached to the outer wall of the furnace body, wherein the jacket is provided with a third liquid inlet and a third liquid outlet.

[0014] In one or more embodiments of the present invention, the first air outlet is an air inlet, and the second air outlet is an air outlet.

[0015] Compared with the prior art, the cooling furnace of the present invention can quickly reduce the temperature of the material, and the atmosphere in the furnace space will not change or be destroyed before the material is taken out, and the stability is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 An axial cross-sectional view of an industrial cooling furnace according to an embodiment of the present invention;

[0018] Figure 2 It is a side cross-sectional view of an industrial cooling furnace in one embodiment of the present invention.

[0019] Description of main reference numerals:

[0020] 100-industrial cooling furnace, 10-furnace body, 11-first area, 12-second area, 20-guide plate, 21-bottom plate, 22-side plate, 30-guide roller, 40-heat exchange element, 41-first liquid inlet, 42-first liquid outlet, 43-second liquid inlet, 44-second liquid outlet, 50-circulating fan, 51-first air outlet, 52-second air outlet, 60-jacket, 61-third liquid inlet, 62-third liquid outlet. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments 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 should fall within the scope of protection of the present invention.

[0022] like Figure 1-2 As shown, an industrial cooling furnace 100 in one embodiment of the present invention includes a furnace body 10, a guide plate 20, a guide roller 30, a heat exchange element 40, and a circulating fan 50. The furnace body 10 can form a closed cooling chamber. The guide plate 20 is disposed within the furnace body 10, which divides the cooling chamber within the furnace body 10 into a first area 11 and a second area 12. The guide roller 30 is supported on the side wall of the furnace body 10 and is at least partially located within the first area 11. The material to be cooled is supported on the guide roller 30 within the first area 11. A plurality of heat exchange elements 40 are fixed to the furnace body 10 for transferring heat within the cooling chamber to the outside of the furnace body 10. Some of the heat exchange elements 40 extend within the first area 11, while the remaining heat exchange elements 40 extend within the second area 12. The circulating fan 50 is disposed within the cooling chamber and includes a first air outlet 51 extending to the first area 11 and a second air outlet 52 extending to the second area 12.

[0023] The material is placed in the first area 11. Because the guide plate 20 divides the furnace space into two relatively independent areas, the circulation fan 50 can create a stable, continuous, and regular circulating airflow within the furnace. The process gas removes heat from the material as it flows over the surface, then exchanges heat with the heat exchanger 40, transferring the heat to the heat exchanger 40 and then out of the furnace. The entire furnace space is relatively sealed, and the atmosphere within the entire space is essentially unchanged or disturbed before the furnace is opened to remove the material, resulting in a high degree of stability.

[0024] Preferably, the heat exchange element 40 is mainly arranged in the second area 12, and only a small part of the heat exchange element 40 extends into the first area 11, so that the process of transferring heat from the material to the process gas is mainly completed in the first area 11, while the process of transferring heat to the heat exchange element 40 is mainly completed in the second area 12.

[0025] In such Figure 1 In the illustrated embodiment, the baffle 20 is open at the top and includes a bottom plate 21 and side plates 22 extending upward from the edges of the bottom plate 21. The first region 11 is the space enclosed by the bottom plate 21 and the side plates 22. The remaining space within the furnace body 10 is the second region 12, comprising the space between the baffle 20 and the inner wall of the furnace body 10 (including the area between the top wall of the furnace body 10 and the top of the side plates 22). Therefore, it can be understood that the first region 11 is enclosed within the second region 12. The first air outlet 51 of the circulation fan 50 is located above the bottom plate 21, while the second air outlet 52 is located between the bottom plate 21 and the bottom of the furnace body 10. The first and second regions 11 and 12 are connected by the top opening of the baffle 20 and the circulation fan 50 at the bottom, creating a circulating airflow between the two regions.

[0026] In one embodiment, the heat exchange element 40 includes a pipe extending into the first region 11 or the second region 12 , through which coolant (e.g., water) flows. Preferably, both ends of the pipe extend outside the furnace body 10 to prevent water leakage when installed inside the furnace body 10 .

[0027] Preferably, two pipe groups are provided above the side plate 22 (i.e., above the material), each pipe group includes a plurality of pipes spread horizontally, and the two pipe groups constitute two cooling surfaces. The airflow undergoes two heat exchanges when flowing over the material, and the densely distributed heat dissipation pipes improve the heat exchange effect and can take away a large amount of heat in the process gas.

[0028] Secondly, multiple pipes are also installed between the base plate 21 and the guide rollers 30. These pipes are laid horizontally between the base plate 21 and the guide rollers 30, allowing the airflow to exchange heat both above and below the material. Due to the limited space between the base plate 21 and the guide rollers 30, only one set of pipes is installed between them. Of course, the number of pipes can be increased by increasing the space between them to enhance the heat exchange effect below the material, but this requires comprehensive consideration of the impact on the equipment volume, internal space, and layout.

[0029] Since the pipes above and below the material differ only in their vertical positions, both use straight pipes, with the first liquid inlet 41 and the first liquid outlet 42 at both ends extending to the outside of the two opposite side walls of the furnace body 10. Cooling liquid is connected to the outside of the furnace body 10 to ensure the airtightness of the space inside the furnace and prevent leakage into the furnace due to improper connection.

[0030] Since the process gas passes through the gap between the side plate 22 and the side wall of the furnace body 10 when it flows, in order to further improve the heat exchange efficiency and improve the material cooling effect, the heat exchanger 40 also includes a heat dissipation pipe arranged between the side plate 22 and the side wall of the furnace body 10, so that when the process gas flows, in addition to heat exchange at the upper and lower ends of the material, heat exchange also occurs when it flows in the second area 12. By increasing the location and number of heat exchanges, the temperature in the furnace is reduced, thereby improving the material cooling efficiency.

[0031] In addition to the straight pipe type, the heat exchange element 40 between the side plate 22 and the side wall of the furnace body 10 can also be made of Figure 2 The second liquid inlet 43 and the second liquid outlet 44 at both ends of the U-shaped pipe extend upward to the outside of the top wall of the furnace body 10 .

[0032] Furthermore, finned tubes may be used as the heat exchange element 40 . Compared with ordinary pipes, finned tubes have fins added to the pipe surface to increase the contact area with the process gas, thereby improving heat exchange efficiency.

[0033] The aforementioned heat exchange element 40 performs heat exchange within the furnace. During the production process, the heat within the furnace is also transferred to the furnace body 10, causing the temperature of the furnace body 10 itself to be higher. If the furnace body 10 can be maintained at a lower temperature, more heat can be transferred to the outside of the furnace through the furnace body 10 itself, further improving the cooling effect. Therefore, a hollow jacket 60 is provided on the outer wall of the furnace body 10. It is equipped with a third liquid inlet 61 and a third liquid outlet 62. By introducing a coolant (such as water), the furnace body 10 is maintained at a relatively low temperature, improving heat exchange efficiency. It also provides an additional heat exchange channel in addition to the heat exchange element 40, further increasing the material cooling rate.

[0034] In one embodiment, the first air outlet 51 is an air inlet, and the corresponding second air outlet 52 is an air outlet. This arrangement makes the airflow ( Figure 1 The arrow in the middle indicates the direction of airflow) flows from the top to the bottom of the first area 11 (during this process, the airflow passes through the surface of the material to remove part of the heat and exchanges heat with the pipe between the guide roller 30 and the bottom plate 21), enters the bottom of the second area 12 through the bottom circulation fan 50, and then flows upward from the bottom of the second area 12 through the outside of the first area 11 to the top (during which time, heat exchange occurs with the pipe between the side plate 22 and the side wall of the furnace body 10), and finally flows into the first area 11 again from the top opening of the guide plate 20 (heat exchange occurs with the pipe between the top of the side plate 22 and the top wall of the furnace body 10).

[0035] Of course, the two tuyere ports can also be reversed, with the first tuyere 51 being the outlet and the second tuyere 52 being the inlet. In this case, the airflow in the furnace reverses direction, flowing upward from the bottom plate 21 (while exchanging heat with the pipes between the bottom plate 21 and the guide rollers 30), removing heat from the material as it passes over it, and then, upon reaching the top of the side plate 22 and exchanging heat with the pipes above, flowing downward through the gap between the side plate 22 and the side wall of the furnace body 10 (while exchanging heat with the pipes between the side plate 22 and the side wall of the furnace body 10), finally flowing back into the first area 11 through the second tuyere 52 at the bottom.

[0036] If a plurality of materials with smaller unit volumes (such as saggers containing lithium battery materials) are placed on the guide roller 30, gaps can be reserved between adjacent materials when stacking them so that airflow can pass between adjacent materials, thereby increasing the contact area with the materials, thereby improving the heat exchange effect, reducing the cooling time, and improving efficiency.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0038] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An industrial cooling furnace, characterized in that: include: The furnace body forms a closed cooling chamber; a guide plate disposed in the furnace body and dividing the cooling chamber into a first area and a second area, the first area being used for placing materials, the guide plate comprising a bottom plate and side plates extending upward from edges of the bottom plate, the first area being formed between the bottom plate and the side plates, the second area being formed between the guide plate and the inner wall of the furnace body, and between the top wall of the furnace body and the top of the side plates, the first air vent being opened above the bottom plate, and the second air vent being located between the bottom plate and the bottom of the furnace body; a guide roller supported on the furnace body and at least partially disposed in the first area, wherein the portion of the guide roller located in the first area is used to support the material to be cooled; A plurality of heat exchange elements are fixed in the cooling cavity, some of the heat exchange elements extend in the second region, and the remaining portion of the heat exchange elements extend in the first region, the heat exchange elements include pipes extending in the first region or the second region, a coolant flowing in the pipes, and a plurality of the pipes are provided between the side plate and the side wall of the furnace body; A circulation fan is arranged in the cooling chamber, and includes a first air outlet extending to the first area, and a second air outlet extending to the second area. The first air outlet is an air inlet, and the second air outlet is an air outlet. The circulation fan is used to create a stable, continuous and regular circulating airflow in the furnace. The generated circulating airflow takes away the heat of the material when flowing through the surface of the material, and generates heat exchange with the heat exchange element, and the heat exchange element transfers the heat to the outside of the furnace.

2. The industrial cooling furnace according to claim 1, characterized in that Two pipe groups are arranged above the side plates in a vertical direction, and each pipe group includes a plurality of pipes arranged horizontally.

3. The industrial cooling furnace according to claim 1, characterized in that A plurality of pipes arranged in a horizontal direction are arranged between the bottom plate and the guide roller.

4. The industrial cooling furnace according to claim 2 or 3, characterized in that: The pipeline located above the side plate, or the pipeline between the bottom plate and the guide roller is a straight pipeline, which includes a first liquid inlet and a first liquid outlet respectively extending to the outside of the two opposite side walls of the furnace body.

5. The industrial cooling furnace according to claim 1, characterized in that The pipe located between the side plate and the side wall of the furnace body is a U-shaped pipe, and the U-shaped pipe includes a second liquid inlet and a second liquid outlet extending outside the top wall of the furnace body.

6. The industrial cooling furnace according to claim 1, characterized in that The furnace further comprises a hollow jacket attached to the outer wall of the furnace body, wherein the jacket is provided with a third liquid inlet and a third liquid outlet.

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