Box-type atmosphere furnace

Abstract

The utility model provides a box-type atmosphere furnace. The box-type atmosphere furnace comprises a furnace body, an air inlet assembly and an exhaust assembly. Air inlet assemblies are arranged at the bottom of the side wall of the furnace body in the circumferential direction at intervals and can communicate with the interior and the exterior of the furnace body. The air inlet assembly located in the furnace body is an arc pipeline with a preset spiral angle. Gas outside the furnace body is in a spiral rising trend in the furnace body after passing through the plurality of arc pipelines; the exhaust assembly is arranged on the bottom wall of the furnace body and communicates with the outside. Through the air inlet assembly arranged at the bottom of the furnace body, the flow direction of air in the atmosphere furnace is spirally upward towards the middle, so that the flow direction of the air is changed, and the air in the furnace body is better replaced. Due to the design of the air inlet assembly, airflow in the furnace is in a spiral rising trend, the exhaust through hole is formed in the bottom, gas generated by reaction can be brought out of the furnace, meanwhile, the atmosphere is prevented from directly escaping from the exhaust through hole, and it is guaranteed that the atmosphere in the furnace is evenly distributed.

Description

Technical Field

[0001] This application relates to the field of atmosphere furnace technology, specifically to a box-type atmosphere furnace with gas recycling function. Background Technology

[0002] Existing box-type atmosphere furnaces have some shortcomings in their air intake and exhaust designs. Specifically, traditional air intake ports are relatively simple, resulting in uneven gas flow and difficulty in completely replacing the air inside the furnace. Traditional exhaust ports are usually located at the top of the furnace body, allowing the introduced gas to be easily and directly exhausted, thus preventing the gases produced in the reaction from being carried away in time and affecting the uniformity of the atmosphere inside the furnace.

[0003] Therefore, there is an urgent need for box-type atmosphere furnaces to solve, to some extent, the technical problems existing in the current technology. Utility Model Content

[0004] The purpose of this application is to provide a box-type atmosphere furnace that, to a certain extent, solves the technical problems existing in the prior art, such as uneven gas flow, incomplete air replacement in the furnace, and difficulty in timely discharge of gas generated during the reaction.

[0005] This application provides a box-type atmosphere furnace, including a furnace body, an air inlet assembly, and an exhaust assembly;

[0006] The sidewall of the furnace body is provided with air intake components at intervals along the circumferential direction at the bottom position. The air intake components can connect the inside and outside of the furnace body. The air intake components located inside the furnace body are arc pipes with a preset spiral angle. The gas outside the furnace body passes through multiple arc pipes and then spirals upward inside the furnace body.

[0007] The exhaust assembly is located on the bottom wall of the furnace body and is connected to the outside.

[0008] In the above technical solution, the air intake assembly further includes an air guide pipe;

[0009] The side wall of the furnace body is provided with air inlet holes spaced apart in the circumferential direction at the bottom position. The air guide pipe extends into the furnace body through the air inlet holes and forms the arc pipe inside the furnace body and the guide pipe outside the furnace body.

[0010] In the above technical solution, the preset spiral angle is further set between 20° and 50°.

[0011] In the above technical solution, the length of the arc-shaped pipe is further set between 8cm and 12cm.

[0012] In the above technical solution, the exhaust assembly is further defined as an exhaust through hole opened on the bottom wall of the furnace body;

[0013] The exhaust vent is located outside the furnace body and is connected to the exhaust pipe.

[0014] In the above technical solution, the diameter of the exhaust hole is further set between 8cm and 12cm.

[0015] In the above technical solution, the furnace body further includes a shell and a furnace door;

[0016] The furnace door is detachably disposed within the housing; when the furnace door is closed within the housing, the furnace door and the furnace body enclose a cavity.

[0017] In the above technical solution, the shell is further defined as a refractory layer, a heat insulation layer, and an outer shell in sequence from the cavity to the furnace exterior.

[0018] In the above technical solution, the box-type atmosphere furnace further includes a filter assembly disposed on the side wall of the furnace body; the filter assembly includes a shell, a filter pipe, and an activated carbon filter layer and an absorption layer disposed within the shell;

[0019] The activated carbon filter layer is provided on both sides of the absorption layer, and one end of the shell is connected to the exhaust port through the filter pipe.

[0020] In the above technical solution, further, the bottom wall of the furnace body is provided with a plurality of rollers spaced apart in the cavity, and the plurality of rollers can cover the exhaust vent.

[0021] A sagger is provided on the roller.

[0022] Compared with the prior art, this application has the following beneficial effects:

[0023] This application provides a box-type atmosphere furnace, including a furnace body, an air inlet assembly, an exhaust assembly, and a filter assembly;

[0024] The sidewall of the furnace body is provided with air intake components at intervals along the circumferential direction at the bottom position. The air intake components can connect the inside and outside of the furnace body. The air intake components located inside the furnace body are arc pipes with a preset spiral angle. The gas outside the furnace body passes through multiple arc pipes and then spirals upward inside the furnace body.

[0025] The exhaust assembly is installed on the bottom wall of the furnace body and can be connected not only to the filter assembly on the side wall of the furnace body but also to the outside environment. The filter assembly can filter the introduced exhaust gas, thereby realizing the recycling of the exhaust gas.

[0026] In summary, the air intake component located at the bottom of the furnace body, specifically a circular arc pipe with a preset spiral angle, causes the gas flow within the atmosphere furnace to spiral upwards towards the center. This alters the gas flow direction, effectively replacing the air within the furnace and solving the problems of traditional single-inlet placement, uneven gas flow, and difficulty in completely replacing the air. Furthermore, the exhaust component changes the exhaust vents within the furnace body to bottom outlets. Because the air intake component design causes the airflow within the furnace to spiral upwards, placing the exhaust vents at the bottom facilitates the removal of reaction-produced gases from the furnace, while preventing the atmosphere from escaping directly from the exhaust vents, ensuring a uniform atmosphere distribution within the furnace. This solves the problems of traditional exhaust vents located at the top of the furnace body, allowing for direct atmosphere discharge and affecting the uniformity of the atmosphere within the furnace. In addition, the addition of a filter component allows for the reuse of exhaust gas, thereby reducing the amount of atmosphere used. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 A top view of the box-type atmosphere furnace provided in this application;

[0029] Figure 2 A side view of the box-type atmosphere furnace provided in this application;

[0030] Figure 3 This is a schematic diagram of the filter assembly in the box-type atmosphere furnace provided in this application.

[0031] Reference numerals: 102-furnace door; 103-cavity; 104-refractory layer; 105-insulation layer; 106-outer shell;

[0032] 2-Intake assembly; 201-Arc duct;

[0033] 3-Exhaust assembly; 301-Exhaust port;

[0034] 4-Roller bar;

[0035] 5-Filter assembly; 501-Filter pipe; 502-Activated carbon filter layer; 503-Absorption layer. Detailed Implementation

[0036] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent upon understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order presented herein; rather, changes that will be apparent upon understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, descriptions of features known in the art may be omitted for clarity and brevity. The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application. Throughout this specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. Conversely, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between. As used herein, the term "and / or" includes any one of the relevant items listed and any combination of any two or more of them. Although terms such as "first," "second," and "third" may be used herein to describe individual components, assemblies, regions, layers, or portions, these components, assemblies, regions, layers, or portions are not limited by these terms. More precisely, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as such in the examples may also be referred to as the second component, assembly, region, layer, or part. For ease of description, spatial relational terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relational terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device in use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element.Therefore, the term "above" includes both "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., oscillating 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly. The terminology used herein is for describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "comprising," "including," and "having" enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. Variations in the shapes shown in the figures may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the figures but include changes in shape that occur during manufacturing. The features of the examples described herein may be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible as will be apparent upon understanding the disclosure of this application.

[0037] Example 1

[0038] Traditional box-type atmosphere furnaces have a relatively simple air inlet design, resulting in uneven gas flow and difficulty in completely replacing the air inside the furnace. Furthermore, traditional exhaust ports are usually located at the top of the furnace, allowing the introduced gas to be easily and directly discharged, thus preventing the timely removal of reaction-produced gases and affecting the uniformity of the atmosphere inside the furnace. To address the problems of uneven gas flow, incomplete air replacement, difficulty in timely removal of reaction-produced gases, and ineffective utilization of exhaust gases in traditional box-type atmosphere furnaces, this application provides a box-type atmosphere furnace with optimized air inlet and exhaust designs. The following is a detailed description... Figure 1 and Figure 2 This application provides a detailed description of a box-type atmosphere furnace.

[0039] Combination Figure 1 and Figure 2 As shown, the box-type atmosphere furnace includes a furnace body, which includes a shell and a furnace door 102. The furnace door 102 is openably disposed within the shell, meaning that the furnace door 102 can be opened or closed within the shell. When the furnace door 102 is closed within the shell, the furnace door 102 and the furnace body enclose a cavity 103. When the furnace door 102 is open within the shell, the saggers within the cavity 103 can be replaced or moved.

[0040] Specifically, the furnace door 102 is connected to the housing using a hinge assembly. Specifically, the hinge assembly includes two hinge flaps and a rotating shaft. The two flaps are spaced apart on the rotating shaft, and the sides of the two flaps facing away from the rotating shaft are connected to the housing and the furnace door 102 respectively, thereby enabling an openable connection between the furnace door 102 and the housing.

[0041] Furthermore, the other end of the furnace door 102 away from the hinge assembly is also provided with a door lock that can be locked together with the housing. The door lock can be in the form of a hook and a buckle, that is, a buckle is provided on the housing and a hook is provided on the furnace door 102. When the hook is attached to the buckle, the furnace door 102 can be locked to the housing.

[0042] Specifically, the shell, from the inside of the cavity 103 to the outside of the furnace, consists of a refractory layer 104, an insulation layer 105, and an outer shell 106. That is, the innermost layer of the shell is the refractory layer 104, followed by the insulation layer 105, and finally the outer shell 106. The refractory layer 104 can withstand a certain temperature, preventing the outer shell 106 from burning. The insulation layer 105 ensures that the cavity 103 maintains a certain temperature.

[0043] Optionally, the furnace body is a cube with four side walls in the circumferential direction.

[0044] Combination Figure 1 and Figure 2 As shown, the box-type atmosphere furnace also includes an air inlet assembly 2. Specifically, air inlet assemblies 2 are spaced apart circumferentially at the bottom of the side wall of the furnace body. The air inlet assemblies 2 can connect the inside and outside of the furnace body, that is, they can guide the gas outside the furnace body into the furnace body. Optionally, each side wall has one air inlet assembly 2 at one of its corners, and the distance between two adjacent air inlet assemblies 2 is equal. Alternatively, each side wall may have air inlet assemblies 2 at both corners.

[0045] Specifically, the air intake assembly 2 includes air guide pipes. Air intake holes are provided at the bottom of the four side walls of the furnace body. The air guide pipes extend into the furnace body through the air intake holes, forming arc-shaped pipes 201 within the furnace body and connecting pipes outside the furnace body. Further, the arc-shaped pipes 201 within the furnace body are arc-shaped pipes 201 with a preset spiral angle; the gas outside the furnace body, after passing through multiple arc-shaped pipes 201, spirals upwards within the furnace body.

[0046] In summary, by setting four air inlets at the four corners of the bottom, and with the pipes inside the air inlets spiraling upwards, the gas flow direction inside the atmosphere furnace is made to spiral upwards towards the center, thereby changing the gas flow direction and better replacing the air inside the atmosphere furnace. This solves the problems of traditional single air inlet setting, uneven gas flow direction, and difficulty in replacing the air inside the furnace.

[0047] Furthermore, the preset helix angle is set between 20° and 50°. Preferably, the preset helix angle is set to 30°.

[0048] Furthermore, the length of the arc-shaped pipe 201 is set between 8cm and 12cm. Preferably, the length of the arc-shaped pipe 201 is 10cm.

[0049] Combination Figure 1 and Figure 2 As shown, the box-type atmosphere furnace also includes an exhaust assembly 3. The exhaust assembly 3 is located on the bottom wall of the furnace body and is connected to the outside. Specifically, the exhaust assembly 3 is an exhaust through-hole 301 opened on the bottom wall of the furnace body; the exhaust through-hole 301 is connected to an exhaust pipe outside the furnace body.

[0050] Furthermore, the diameter of the exhaust port 301 is set between 8cm and 12cm. Preferably, the diameter of the exhaust port 301 is 10cm.

[0051] In summary, the exhaust assembly 3 changes the exhaust vent inside the furnace to a bottom outlet. Because the design of the intake assembly 2 causes the airflow inside the furnace to rise in a spiral pattern, placing the exhaust vent at the bottom helps to carry the gases produced by the reaction out of the furnace, while preventing the atmosphere from escaping directly from the exhaust vent, ensuring a uniform distribution of the atmosphere inside the furnace. This solves the problems of traditional exhaust vents located at the top of the furnace, allowing for easy direct exhaust and affecting the uniformity of the atmosphere inside the furnace.

[0052] In actual use, it was also found that the exhaust gas generated during the sintering process in the atmosphere furnace was not effectively utilized, resulting in a certain waste of resources. Therefore, in this embodiment, combined with Figure 3 The box-type atmosphere furnace also includes a filter assembly disposed on the side wall of the furnace body. The filter assembly 5 is connected to the exhaust vent 301 on the bottom wall through a filter pipe 501. Specifically, the filter assembly includes a shell, a filter pipe, and an activated carbon filter layer and an absorption layer disposed within the shell; wherein, the absorption layer 503 is located in the middle of the shell, and the activated carbon filter layer 502 is disposed at both ends and connected to the exhaust vent 301 through the filter pipe 501.

[0053] Furthermore, the filter layer consists of multiple layers of activated carbon filter elements, and the absorption layer is filled with limestone and soda ash particles.

[0054] Furthermore, in the later stages of sintering, the exhaust gas mainly consists of the inert atmosphere used and substances such as water and carbon dioxide produced in the reaction. After being treated by the filtration and absorption device, the treated exhaust gas can be reintroduced into the furnace through the filtration pipeline, reducing the amount of fresh atmosphere required and lowering operating costs.

[0055] In this embodiment, multiple rollers 4 are spaced apart on the bottom wall of the furnace body within the cavity 103, and the multiple rollers 4 can cover the exhaust vent 301; a sagger is provided on the roller 4, and the placed sagger blocks the exhaust port, while facilitating the movement of the sagger within the furnace body.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A box-type atmosphere furnace, characterized in that, Includes the furnace body, air intake assembly, and exhaust assembly; The sidewall of the furnace body is provided with air intake components at intervals along the circumferential direction at the bottom position. The air intake components can connect the inside and outside of the furnace body. The air intake components located inside the furnace body are arc pipes with a preset spiral angle. The gas outside the furnace body passes through multiple arc pipes and then spirals upward inside the furnace body. The exhaust assembly is located on the bottom wall of the furnace body and is connected to the outside.

2. The box-type atmosphere furnace according to claim 1, characterized in that, The air intake assembly includes an air guide pipe; The side wall of the furnace body is provided with air inlet holes spaced apart in the circumferential direction at the bottom position. The air guide pipe extends into the furnace body through the air inlet holes and forms the arc pipe inside the furnace body and the guide pipe outside the furnace body.

3. The box-type atmosphere furnace according to claim 1, characterized in that, The preset spiral angle is set between 20° and 50°.

4. The box-type atmosphere furnace according to claim 1 or 2, characterized in that, The length of the arc-shaped pipe is set between 8cm and 12cm.

5. The box-type atmosphere furnace according to claim 1, characterized in that, The exhaust assembly is an exhaust vent located on the bottom wall of the furnace body; The exhaust vent is located outside the furnace body and is connected to the exhaust pipe.

6. The box-type atmosphere furnace according to claim 5, characterized in that, The diameter of the exhaust vent is set between 8cm and 12cm.

7. The box-type atmosphere furnace according to claim 5, characterized in that, The furnace body includes a shell and a furnace door; The furnace door is detachably disposed within the housing; when the furnace door is closed within the housing, the furnace door and the furnace body enclose a cavity.

8. The box-type atmosphere furnace according to claim 7, characterized in that, The shell consists of a refractory layer, an insulation layer, and an outer shell, arranged sequentially from the inside of the cavity to the outside of the furnace.

9. The box-type atmosphere furnace according to claim 7, characterized in that, The box-type atmosphere furnace also includes a filter assembly disposed on the side wall of the furnace body; The filtration assembly includes a housing, a filtration pipe, and an activated carbon filtration layer and an absorption layer disposed within the housing; The activated carbon filter layer is provided on both sides of the absorption layer, and one end of the shell is connected to the exhaust port through the filter pipe.

10. The box-type atmosphere furnace according to claim 7, characterized in that, The bottom wall of the furnace body is provided with multiple rollers spaced apart within the cavity, and the multiple rollers can cover the exhaust vent. A sagger is provided on the roller.

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