Strong convection atmosphere spheroidizing annealing furnace

Abstract

The utility model relates to the technical field of annealing furnaces, and discloses a strong convection atmosphere spheroidizing annealing furnace which comprises a shell, a dust discharge door arranged on the side wall of the shell, a top cover arranged at the top of the shell, an inner furnace body arranged in the shell, and a heating belt arranged on the inner wall of the inner furnace body, according to the utility model, the inner furnace body with the plurality of ventilation nets is arranged in the shell and is matched with the flow dividing piece and the air inlet piece at the two ends of the inner furnace body, so that when the axial flow fan I and the axial flow fan II operate, air in the inner furnace body enters the flow dividing piece from a cavity between the bottom of the inner furnace body and the shell after entering the air inlet piece; at the moment, the air is separated by the separating plate, then is separated by the plurality of ventilating nets and then returns to the inner furnace body, so that the returned air can be dispersed and returned into the inner furnace body, the corners in the inner furnace body can be blown by the airflow, and the convection effect when the airflow is in contact with the material can be improved by utilizing the dispersed airflow; and the atmosphere spheroidizing annealing furnace is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of annealing furnaces, in particular to a strong convection atmosphere spheroidizing annealing furnace. Background Art

[0002] An atmosphere spheroidizing annealing furnace is a type of equipment used for the heat treatment of metal materials, primarily to improve the mechanical properties and microstructure of metals. Spheroidizing annealing is a specific heat treatment process commonly used for high-carbon steel and alloy steel to transform their structure into spheroidal carbides, thereby improving the material's machinability and toughness.

[0003] The existing atmosphere spheroidizing annealing furnace is usually provided with an outer furnace body, an inner furnace body, a fan for convection and an air supply duct. The air inside the inner furnace body can be sent back to the interior of the inner furnace body from the side wall of the inner furnace body through the air holes at the bottom of the inner furnace body and the drive of the fan through the air supply duct. The overall air supply mechanism is relatively simple. The air flow is sent back to the interior of the inner furnace body through the duct. The dispersion effect of the reflux air flow is poor. The corners inside the inner furnace body are often not exposed to the air flow. Therefore, the problem of poor convection effect of the atmosphere spheroidizing annealing furnace is easy to occur. For this reason, we propose a strong convection atmosphere spheroidizing annealing furnace. Utility Model Content

[0004] The purpose of the utility model is to provide a spheroidizing annealing furnace with a strong convection atmosphere, so as to solve the problem in the above background technology that the poor dispersion effect of the reflux airflow leads to poor convection effect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a strong convection atmosphere spheroidizing annealing furnace, comprising:

[0006] An outer shell, a dust exhaust door is provided on the side wall of the outer shell, a top cover is provided on the top of the outer shell, an inner furnace body is provided inside the outer shell, and a heating belt is provided on the inner wall of the inner furnace body;

[0007] A diverter is provided on the right side of the inner furnace body, an air inlet is provided on the left side of the inner furnace body, an axial flow fan 1 is provided at the bottom of the diverter, the axial flow fan 1 is electrically connected to a control switch, an axial flow fan 2 is provided at the bottom of the air inlet, a mesh plate is provided inside the inner furnace body, a plurality of air permeable nets are embedded in the inner wall of the inner furnace body, and a plurality of partition plates are provided inside the diverter;

[0008] A multi-layer filter screen is arranged between the outer shell and the inner furnace body, the side wall of the multi-layer filter screen is provided with a scraper, the side wall of the scraper is fixedly connected to a pulling column, the front side wall of the pulling column is provided with a support sheet, the front side wall of the support sheet is provided with a handle, and the inner wall of the outer shell is provided with a heat insulation board.

[0009] Preferably, a plurality of support columns are provided between the inner furnace body and the outer shell.

[0010] Preferably, the support sheet is fitted onto the top of the heat insulation board.

[0011] Preferably, the scraper is fitted between the outer shell and the inner furnace body.

[0012] Preferably, the diverter and the air inlet are fixedly connected to the interior of the housing.

[0013] Preferably, the side wall of the shell is provided with a supporting edge that cooperates with the top cover.

[0014] Preferably, the control switch is fixed to the side wall of the housing.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model provides an inner furnace body with multiple air-permeable nets inside the outer shell, in conjunction with diverter pieces and air inlet pieces at both ends of the inner furnace body. When the axial flow fan 1 and the axial flow fan 2 are in operation, the air inside the inner furnace body enters the air inlet piece and then enters the interior of the diverter piece from the cavity between the bottom of the inner furnace body and the outer shell. At this time, the air is separated by the partition plate and then returns to the inner furnace body after being separated by the multiple air-permeable nets, so that the refluxed air can be dispersed and refluxed into the interior of the inner furnace body, so that the corners inside the inner furnace body can also be blown by the airflow, and the dispersed airflow can also be used to enhance the convection effect when the airflow contacts the material, which is convenient for the use of the atmosphere spheroidizing annealing furnace.

[0017] 2. In the present invention, when the airflow passes through the cavity between the bottom of the inner furnace body and the outer shell, the multi-layer filter can filter the dust particles in the airflow, thereby reducing the dust in the airflow by filtering the multi-layer filter, and preventing a large amount of dust from flowing back into the inner furnace body. After the strong convection atmosphere spheroidizing annealing furnace is used, the dust exhaust door can be opened, and the handle can be pulled to drive the scraper to move outward through the pulling column. At this time, the scraper can scrape the left outer wall of the multi-layer filter and the cavity wall between the bottom of the left side of the multi-layer filter and the outer shell, so that the dust is scraped and displaced forward, and then the dust can be discharged from the dust exhaust door, which can realize convenient dust cleaning and increase the convenience of using the strong convection atmosphere spheroidizing annealing furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the inner furnace body of the present invention;

[0020] Figure 3 This is a schematic structural diagram of the diverter element of the present utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the shell of the present utility model;

[0022] Figure 5 This is a schematic diagram of the combined structure of the multi-layer filter screen, scraper and pulling column of the utility model.

[0023] In the figure: 100, outer shell; 101, dust exhaust door; 110, top cover; 120, inner furnace body; 121, heating belt; 200, diverter; 201, partition plate; 210, axial flow fan 1; 220, breathable mesh; 221, pad mesh plate; 230, air intake part; 231, axial flow fan 2; 232, control switch; 300, multi-layer filter; 301, heat insulation board; 310, pulling column; 311, handle; 312, support plate; 320, scraper; 330, support column. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 are within the scope of protection of the present invention.

[0025] Example

[0026] See also Figure 1-Figure 5 , a strong convection atmosphere spheroidizing annealing furnace shown in the figure includes:

[0027] A dust exhaust door 101 is provided on the side wall of the outer shell 100, and a top cover 110 is provided on the top of the outer shell 100. The top cover 110 presses on the top of the inner furnace body 120. Gas supply pipes are provided on the side walls of the outer shell 100 and the inner furnace body 120. The inner furnace body 120 is provided inside the outer shell 100, and a heating belt 121 is provided on the inner wall of the inner furnace body 120. The heating belt 121 is made of a common electric heating belt on the market, mainly made of nickel-chromium alloy, and can generate heat when powered on.

[0028] The diverter 200 is arranged on the right side of the inner furnace body 120, and the air inlet 230 is arranged on the left side of the inner furnace body 120. An axial flow fan 210 is arranged at the bottom of the diverter 200. When the axial flow fan 210 is running, the air flow runs upward. The axial flow fan 210 is electrically connected to a control switch 232. The control switch 232 is a multi-button switch commonly used on the market. The axial flow fan 210 and the axial flow fan 231 use common models on the market. The bottom of the air inlet 230 is provided with an axial flow fan 210. The second fan 231 has a downward airflow when the second axial fan 231 is in operation. A mesh pad 221 is provided inside the inner furnace body 120. The mesh pad 221 is made of stainless steel mesh. A plurality of air permeable meshes 220 are embedded in the inner wall of the inner furnace body 120. A plurality of partition plates 201 are provided inside the diverter 200. A square hole is provided on the left side wall of the inner furnace body 120 to match the air inlet 230. The air inlet 230 has the same appearance as the diverter 200, but does not have the partition plates 201 inside.

[0029] The multi-layer filter 300 is arranged between the outer shell 100 and the inner furnace body 120. The multi-layer filter 300 is composed of a common stainless steel dust filter and a polyimide dust filter. The side wall of the multi-layer filter 300 is provided with a scraper 320, and the side wall of the scraper 320 is fixedly connected to a pulling column 310. The front side wall of the pulling column 310 is provided with a support sheet 312, and the front side wall of the support sheet 312 is provided with a handle 311. When the dust exhaust door 101 is opened, the handle 311 and the pulling column 310 can be pulled out through the opening of the dust exhaust door 101. The inner wall of the outer shell 100 is provided with a heat insulation board 301, and the heat insulation board 301 is made of common heat insulation cotton on the market.

[0030] Specifically, a plurality of support columns 330 are provided between the inner furnace body 120 and the outer shell 100 .

[0031] Furthermore, the support sheet 312 is fitted on the top of the heat insulation board 301 .

[0032] Furthermore, the scraper 320 is fitted between the outer shell 100 and the inner furnace body 120 .

[0033] Furthermore, the flow dividing member 200 and the air inlet member 230 are fixed to the interior of the housing 100 .

[0034] It is worth noting that the side wall of the housing 100 is provided with a supporting edge that cooperates with the top cover 110 .

[0035] It should be noted that the control switch 232 is fixed to the side wall of the housing 100 .

[0036] In addition, the electrical components and electrical equipment mentioned above all use external power supplies. The circuits, electronic components, and modules involved in this utility model are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to the internal structure and method.

[0037] Working principle: By arranging an inner furnace body 120 with multiple air-permeable nets 220 inside the outer shell 100, in conjunction with the diverter 200 and the air inlet 230 at both ends of the inner furnace body 120, when the axial flow fan 1 210 and the axial flow fan 2 231 are running, the air inside the inner furnace body 120 enters the air inlet 230 and then enters the interior of the diverter 200 from the cavity between the bottom of the inner furnace body 120 and the outer shell 100. At this time, the air is separated by the partition plate 201 and then passes through the multiple air-permeable nets 220 to return to the inner furnace body 120, so that the reflux air can be dispersed and refluxed to the interior of the inner furnace body 120, so that the corners inside the inner furnace body 120 can also be blown by the air flow, and the dispersed air flow can also be used to enhance the convection effect when the air flow contacts the material, which is convenient for the atmosphere spheroidizing annealing furnace Use; and when the air flow passes through the cavity between the bottom of the inner furnace body 120 and the outer shell 100, the multi-layer filter 300 can filter the dust particles in the air flow, so that the filtration of the multi-layer filter 300 can reduce the dust in the air flow and prevent more dust from flowing back into the interior of the inner furnace body 120. After the strong convection atmosphere spheroidizing annealing furnace is used, the dust exhaust door 101 can be opened, and the handle 311 can be pulled to drive the scraper 320 to move outward through the pulling column 310. At this time, the scraper 320 can scrape the left outer wall of the multi-layer filter 300 and the cavity wall between the bottom of the left side of the multi-layer filter 300 and the outer shell 100, so that the dust is scraped and displaced forward, and then the dust can be discharged from the dust exhaust door 101, which can realize convenient dust cleaning and increase the convenience of using the strong convection atmosphere spheroidizing annealing furnace.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A strong convection atmosphere spheroidizing annealing furnace, characterized in that: include: A shell (100), a dust exhaust door (101) is provided on a side wall of the shell (100), a top cover (110) is provided on the top of the shell (100), an inner furnace body (120) is provided inside the shell (100), and a heating belt (121) is provided on the inner wall of the inner furnace body (120); A diverter (200) is provided on the right side of the inner furnace body (120); an air inlet (230) is provided on the left side of the inner furnace body (120); an axial flow fan (210) is provided at the bottom of the diverter (200); the axial flow fan (210) is electrically connected to a control switch (232); an axial flow fan (231) is provided at the bottom of the air inlet (230); a pad mesh plate (221) is provided inside the inner furnace body (120); a plurality of air permeable meshes (220) are embedded in the inner wall of the inner furnace body (120); and a plurality of partition plates (201) are provided inside the diverter (200); A multi-layer filter screen (300) is provided between the outer shell (100) and the inner furnace body (120); a scraper (320) is provided on the side wall of the multi-layer filter screen (300); a pulling column (310) is fixedly connected to the side wall of the scraper (320); a supporting plate (312) is provided on the front side wall of the pulling column (310); a handle (311) is provided on the front side wall of the supporting plate (312); and a heat insulation board (301) is provided on the inner wall of the outer shell (100).

2. A strong convection atmosphere spheroidizing annealing furnace according to claim 1, characterized in that: A plurality of support columns (330) are provided between the inner furnace body (120) and the outer shell (100).

3. The strong convection atmosphere spheroidizing annealing furnace according to claim 1, characterized in that: The support sheet (312) is fitted on the top of the heat insulation board (301).

4. The strong convection atmosphere spheroidizing annealing furnace according to claim 1, characterized in that: The scraper (320) is fitted between the outer shell (100) and the inner furnace body (120).

5. The strong convection atmosphere spheroidizing annealing furnace according to claim 1, characterized in that: The flow dividing member (200) and the air inlet member (230) are fixedly connected to the interior of the housing (100).

6. The strong convection atmosphere spheroidizing annealing furnace according to claim 1, characterized in that: The side wall of the housing (100) is provided with a supporting edge that matches the top cover (110).

7. The strong convection atmosphere spheroidizing annealing furnace according to claim 1, characterized in that: The control switch (232) is fixed to the side wall of the housing (100).

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