Energy-saving thermal cycle industrial annealing furnace and use method thereof

Abstract

The invention discloses an energy-saving thermal cycle industrial annealing furnace and a using method thereof. The energy-saving thermal cycle industrial annealing furnace comprises an annealing furnace body, a fixing frame, a thermal cycle structure, a protection structure and a material frame structure. The thermal cycle structure is arranged in the annealing furnace main body and is used for transmitting hot air during operation of the annealing furnace main body; the protection structure is mounted on the fixing frame and is used for forming a shielding structure outside the annealing furnace main body and protecting the annealing furnace main body; the material frame structure is connected with the protection structure and used for forming a supporting mechanism on the front face and the back face of the annealing furnace body and supporting the machined materials. Hot air circulates among the channel formed by the trough plate, the first circulating pipeline and the second circulating pipeline to form a plurality of small circulating air ducts, the air duct draft is locally controlled, the number of circulating fans is reduced, the energy consumption is reduced, the annealing furnace main body is shielded by the first protection plate and the second protection plate, and the heat loss is reduced.

Description

Technical Field

[0001] The invention relates to the field of annealing furnaces, and in particular to an energy-saving thermal cycle industrial annealing furnace and a use method thereof. Background Art

[0002] Annealing furnace is a common heat treatment device. The heating methods include electric heating, oil, gas, coal, and hot air circulation. It is a new type of heat exchange equipment and usually consists of a furnace body, a movable furnace cover and a control system.

[0003] During the operation of the annealing furnace, a large amount of heat is generated. In order to recycle the heat, the circulating fan and the pipe are used together to suck the hot air and recycle the heat in the air. The annealing furnace uses the air duct to form a large circulation inside, and because the circulating fan is not used, the circulation of the double circulation pipe may be blocked, affecting the heat transmission. At the same time, the heat generated by the annealing furnace will diffuse into the external air, further causing energy loss. Summary of the invention

[0004] The object of the present invention is to provide an energy-saving thermal cycle industrial annealing furnace and a method of using the same to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an energy-saving thermal cycle industrial annealing furnace, comprising an annealing furnace body;

[0006] A fixing frame, wherein the fixing frame is arranged outside the annealing furnace body;

[0007] It also includes a heat circulation structure, a protection structure and a material rack structure, wherein the heat circulation structure is arranged inside the annealing furnace body and is used to transmit hot air when the annealing furnace body is in operation;

[0008] The protective structure is installed on the fixing frame, and is used to form a shielding structure outside the annealing furnace body and protect the annealing furnace body;

[0009] The material rack structure is connected to the protective structure, and is used to form a supporting mechanism on the front and back sides of the annealing furnace body and to support the processed materials.

[0010] Preferably, the thermal cycle structure comprises:

[0011] A slot plate, the slot plate being fixedly mounted on the top of the annealing furnace body;

[0012] A first circulation pipeline, the first circulation pipeline is connected to the slot plate, and one end of the first circulation pipeline is fixedly inserted into one side of the annealing furnace body;

[0013] a second circulation pipeline, wherein the second circulation pipeline is arranged in the inner cavity of the annealing furnace body;

[0014] The air ducts are arranged on both sides of the annealing furnace body and are connected to the first circulation duct and the second circulation duct.

[0015] Preferably, the protective structure comprises:

[0016] A first protective plate, which is arranged on both sides of the top of the annealing furnace body and is arranged in an L shape;

[0017] A second protective plate, wherein the second protective plate is fixedly mounted on the bottom of the front and back sides of the annealing furnace body respectively;

[0018] A mounting block, the bottom end of which is fixedly connected to one side of the upper surface of the fixing frame;

[0019] The mounting shaft is fixedly inserted into one end of the first protective plate, and one end of the mounting shaft is rotatably inserted into the top of the mounting block.

[0020] Preferably, the protective structure further comprises:

[0021] A casing, wherein the casing is fixedly mounted on the top of one side of the fixing frame;

[0022] A first gear, the first gear is fixedly inserted and connected with one end of the mounting shaft, and the first gear is meshingly connected;

[0023] A second gear, the second gear is arranged below the first gear, and the top of the second gear is meshed and connected with the bottom of one of the first gears;

[0024] The servo motor is fixedly mounted on one side of the casing, and an output end of the servo motor is meshedly connected with the second gear.

[0025] Preferably, the rack structure comprises:

[0026] Support frames, which are respectively arranged on the front and back of the annealing furnace body;

[0027] A fixing block, wherein the fixing block is fixedly connected to two sides of the outer wall of the second protective plate;

[0028] A fixed shaft, one end of which is fixedly connected to one side of the top of the support frame, and the other end of which is rotatably interlaced with the fixed block.

[0029] Preferably, the rack structure further comprises:

[0030] A fixing rod, one end of which is fixedly connected to one side of the supporting frame;

[0031] A connecting block, wherein the connecting block is arranged on both sides of the supporting frame, and one side of the outer wall of the connecting block is fixedly connected to the other end of the fixing rod;

[0032] The movable groove is arranged on the other side of the connecting block, and the movable groove is arranged in a long strip shape.

[0033] Preferably, the rack structure further comprises:

[0034] A movable rod, which is arranged on both sides of the first protective plate and is used to connect the first protective plate and the connecting block;

[0035] A fixed column, wherein the fixed column is fixedly inserted into the bottom of the movable rod, and one end of the fixed column is inserted into the inner cavity of the movable groove;

[0036] A connecting shaft is rotatably interlaced with the top of the movable rod, and one end of the connecting shaft is connected to one side of the first protective plate.

[0037] Preferably, the support frame comprises a fixing plate and a plurality of round rods, wherein the fixing plates are fixedly connected to one end of the round rods respectively, and the round rods are arranged between the fixing plates at equal intervals.

[0038] Preferably, observation windows are fixedly installed on the top of the first protective plate and the top of the second protective plate, and the observation windows are made of high-temperature resistant transparent material. The bottom end of the first protective plate fits with the top end of the second protective plate.

[0039] The present invention also provides a method for using an energy-saving thermal cycle industrial annealing furnace, comprising the following specific steps:

[0040] Step 1: First, the servo motor is operated to drive the second gear to rotate, and the meshing action of the second gear and the first gear is used to drive one of the first gears to rotate, and the meshing action of the two first gears is used to make the two first gears rotate together, so as to unfold the two first protection plates and load and unload the materials;

[0041] Step 2: Then, the first protective plate is rotated upward to open, driving the movable rod to move together, the top of the movable rod rotates around the connecting shaft, and the bottom of the movable rod drives the fixed column to slide in the inner cavity of the movable groove. With the movement of the movable rod, the fixed column pulls the support frame upward, and the support frame rotates around the fixed axis to a horizontal position, and the material is placed on the support frame;

[0042] Step three: Then, the servo motor is operated to drive the first protective plate to rotate and close, so that the first protective plate and the second protective plate shield the annealing furnace body, reduce heat loss, and play a protective role. When the annealing furnace body is in operation, the heat generated flows with the air between the first circulation pipe, the second circulation pipe, and the air duct, forming multiple small circulations on the inner wall of the annealing furnace body, which is convenient for controlling the flow of air and reducing heat loss.

[0043] Technical effects and advantages of the present invention:

[0044] (1) The present invention utilizes the arrangement mode of matching the slot plate, the first circulation duct and the second circulation duct, and through the operation of the external fan, the hot air inside the annealing furnace body is sucked, so that the hot air flows between the channel formed by the slot plate and the first circulation duct and the second circulation duct, forming a plurality of small circulation air ducts, which is convenient for controlling the air duct suction force locally and reducing the number of circulation fans, thereby achieving the purpose of reducing energy consumption;

[0045] (2) The present invention utilizes a configuration in which the first protective plate, the movable rod, the fixed column, the movable groove and the support frame are matched. The first protective plate is rotated upward to open, driving the movable rod to move together. The top of the movable rod rotates around the connecting shaft, and the bottom of the movable rod drives the fixed column to slide in the inner cavity of the movable groove. With the movement of the movable rod, the fixed column pulls the support frame upward, and the support frame rotates around the fixed shaft to a horizontal position, which is convenient for loading and unloading materials.

[0046] (3) The present invention utilizes a configuration in which the first protective plate, the second protective plate, the first gear and the second gear are matched with each other. Through the operation of the servo motor, the second gear is driven to rotate forward and reverse. The meshing action of the second gear and the first gear is utilized to drive one of the first gears to rotate. The meshing action of the two first gears is utilized to make the two first gears rotate together, the two first protective plates are opened and closed, the materials are loaded and unloaded, and the first protective plates and the second protective plates are used to shield the annealing furnace body, thereby reducing heat loss and playing a protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0048] Figure 2 This is a schematic structural diagram of the first protective plate of the present invention.

[0049] Figure 3 It is a structural schematic diagram of the slot plate of the present invention.

[0050] Figure 4 For the present invention Figure 2 A is an enlarged structural diagram of FIG.

[0051] Figure 5 It is a schematic diagram of the structure of the casing of the present invention.

[0052] Figure 6 It is a schematic diagram of the side sectional structure of the casing of the present invention.

[0053] Figure 7 It is a structural schematic diagram of the support frame of the present invention.

[0054] In the figure: 1. Annealing furnace body; 2. Fixed frame; 3. Heat circulation structure; 31. Slot plate; 32. First circulation pipeline; 33. Second circulation pipeline; 34. Air duct; 4. Protection structure; 41. First protection plate; 42. Second protection plate; 43. Mounting block; 44. Mounting shaft; 45. Casing; 46. First gear; 47. Second gear; 48. Servo motor; 5. Material rack structure; 51. Support frame; 52. Fixed block; 53. Fixed shaft; 54. Fixed rod; 55. Connecting block; 56. Movable slot; 57. Movable rod; 58. Fixed column; 6. Observation window. DETAILED DESCRIPTION

[0055] 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 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 creative work are within the scope of protection of the present invention.

[0056] The present invention provides Figure 1-Figure 7 An energy-saving heat cycle industrial annealing furnace shown in the figure includes an annealing furnace body 1, a fixing frame 2, a heat cycle structure 3, a protective structure 4 and a rack structure 5. The annealing furnace body 1 is electrically connected to an external power supply through an external first switch. The fixing frame 2 is arranged outside the annealing furnace body 1. The fixing frame 2 is used for installing the protective structure 4 and the rack structure 5; the heat cycle structure 3 is arranged inside the annealing furnace body 1, and is used for transmitting hot air when the annealing furnace body 1 is in operation. The heat cycle structure 3 is used to form a plurality of small circulation structures inside the annealing furnace body 1, so as to facilitate the control of the transportation of hot air; the protective structure 3 The structure 4 is installed on the fixed frame 2, and is used to form a shielding structure on the outside of the annealing furnace main body 1 and protect the annealing furnace main body 1. The annealing furnace main body 1 is shielded and covered by the protective structure 4 to reduce heat loss and protect the annealing furnace main body 1; the material rack structure 5 is connected to the protective structure 4, and is used to form a supporting mechanism on the front and back of the annealing furnace main body 1 and support the processed materials. The material rack structure 5 moves with the protective structure 4, which is convenient for placing and supporting the materials, convenient for adding the materials into the annealing furnace main body 1, and convenient for taking out the processed materials.

[0057] Specifically, the heat circulation structure 3 includes a slot plate 31, which is fixedly installed on the top of the annealing furnace body 1. A plurality of slot plates 31 form a plurality of square pipes on the top of the annealing furnace body 1, and hot air is transported in the cavity formed by the slot plates 31; a first circulation pipe 32, which is connected to the slot plate 31, and one end of which is fixedly inserted into one side of the annealing furnace body 1, and hot air circulates between the slot plate 31 and the first circulation pipe 32; a second circulation pipe 33, which is arranged in the inner cavity of the annealing furnace body 1, and the second circulation pipe 33 is connected to the air duct 34, and is used for heat Air flow; air duct 34, the air duct 34 is arranged on both sides of the annealing furnace body 1, and is connected to the first circulation duct 32 and the second circulation duct 33. The air duct 34 is composed of multiple plates, and the interior is hollow. One end of multiple slot plates 31 is connected. With the operation of the external fan, the hot air inside the annealing furnace body 1 is sucked, so that the hot air flows between the channel formed by the slot plate 31 and the first circulation duct 32 and the second circulation duct 33, forming multiple small circulation air ducts, which is convenient for local control of the air duct suction force and reduces the number of circulation fans, thereby achieving the purpose of reducing energy consumption.

[0058] Furthermore, the protective structure 4 includes a first protective plate 41, which is arranged on both sides of the top of the annealing furnace body 1, and is arranged in an L shape. The two first protective plates 41 respectively block the front and back of the top of the annealing furnace body 1 to keep warm; a second protective plate 42, which is fixedly installed at the bottom of the front and back of the annealing furnace body 1, respectively, and the second protective plate 42 cooperates with the first protective plate 41 to block and protect the internal annealing furnace body 1; a mounting block 43, the bottom end of which is fixedly connected to the fixed On one side of the upper surface of the frame 2, the mounting block 43 is used to support and install the first protective plate 41; the mounting shaft 44, the mounting shaft 44 is fixedly inserted into one end of the first protective plate 41, and one end of the mounting shaft 44 is rotatably inserted into the top of the mounting block 43, and the first protective plate 41 is rotatably connected to the mounting block 43 through the mounting shaft 44, so that the first protective plate 41 is rotated around the mounting shaft 44 to open and close; the housing 45, the housing 45 is fixedly installed on the top of one side of the fixed frame 2, and the housing 45 is used to protect the first gear 46 and the second gear 47; the first gear 4 6, the first gear 46 is fixedly connected with one end of the installation shaft 44, the first gear 46 is meshed, the two installation shafts 44 are connected through the two first gears 46, and the meshing action of the two first gears 46 is used to make the two first protection plates 41 rotate in opposite directions; the second gear 47, the second gear 47 is arranged below the first gear 46, the top of the second gear 47 is meshed with the bottom of one of the first gears 46, and the meshing action of the second gear 47 and the first gear 46 is used to drive the first gear 46 to rotate; the servo motor 4 8. The servo motor 48 is fixedly installed on one side of the housing 45, and its output end is meshed and connected with the second gear 47. The servo motor 48 is electrically connected to the external power supply through an external second switch. The operation of the servo motor 48 drives the second gear 47 to rotate forward and reverse. The meshing action of the second gear 47 and the first gear 46 is used to drive one of the first gears 46 to rotate. The meshing action of the two first gears 46 makes the two first gears 46 rotate together, so that the two first protective plates 41 are unfolded, and the materials are loaded and unloaded.

[0059] Furthermore, the material rack structure 5 includes a support frame 51, which is respectively arranged on the front and back of the annealing furnace body 1, and the support frame 51 is used to place and support the material, so as to facilitate the material to be placed in the interior of the annealing furnace body 1; a fixed block 52, which is fixedly connected to both sides of the outer wall of the second protective plate 42, and the fixed block 52 is used to connect the support frame 51 and the second protective plate 42; a fixed shaft 53, one end of the fixed shaft 53 is fixedly connected to one side of the top of the support frame 51, and the other end thereof is rotatably interlaced with the fixed block 52, and the support frame 51 rotates around the fixed shaft 53, which is convenient for the support frame 51 Storage and use; fixed rod 54, one end of the fixed rod 54 is fixedly connected to one side of the support frame 51, and the fixed rod 54 is used to connect the support frame 51 and the connecting block 55; connecting block 55, the connecting block 55 is arranged on both sides of the support frame 51, one side of its outer wall is fixedly connected to the other end of the fixed rod 54, and the connecting block 55 is used to drive the support frame 51 to rotate; movable groove 56, the movable groove 56 is arranged on the other side of the connecting block 55, the movable groove 56 is arranged in a long strip shape, and the movable groove 56 is used to install the fixed column 58; movable rod 57, the movable rod 57 is arranged on both sides of the first protective plate 41, and is used to connect The first protective plate 41 and the connecting block 55, the two movable rods 57 are respectively arranged on both sides of the first protective plate 41 and the support frame 51, and move with the first protective plate 41 to drive the support frame 51 to rotate; the fixed column 58, the fixed column 58 is fixedly inserted at the bottom of the movable rod 57, and one end of the fixed column 58 is inserted in the inner cavity of the movable groove 56. The fixed column 58 moves with the movable rod 57 and is used to squeeze the inner wall of the movable groove 56, pull the connecting block 55 and the support frame 51 upward, and drive the fixed column 58 to slide in the inner cavity of the movable groove 56 as the movable rod 57 moves; Axis, the connecting shaft and the top of the movable rod 57 are rotatably connected, one end of the connecting shaft is connected to one side of the first protective plate 41, the top of the movable rod 57 is rotatably connected to one side of the first protective plate 41 through the connecting shaft, and the first protective plate 41 is rotated upward to open, driving the movable rod 57 to move together, the top of the movable rod 57 rotates around the connecting shaft, and the bottom of the movable rod 57 drives the fixed column 58 to slide in the inner cavity of the movable groove 56. With the movement of the movable rod 57, the fixed column 58 pulls the support frame 51 upward, and the support frame 51 rotates around the fixed shaft 53 to a horizontal position, and the material is placed on the support frame 51.

[0060] The support frame 51 includes a fixed plate and a plurality of round rods. The fixed plates are fixedly connected to one end of the round rods respectively. The round rods are arranged at equal intervals between the fixed plates. An observation window 6 is fixedly installed on the top of the first protective plate 41 and the top of the second protective plate 42. The observation window 6 is made of a high-temperature resistant transparent material. The operation of the annealing furnace body 1 inside the first protective plate 41 can be conveniently observed through the observation window 6. The bottom end of the first protective plate 41 fits with the top end of the second protective plate 42.

[0061] Method of use of the present invention:

[0062] First, the servo motor 48 is operated to drive the second gear 47 to rotate, and the meshing action of the second gear 47 and the first gear 46 is used to drive one of the first gears 46 to rotate, and the meshing action of the two first gears 46 is used to make the two first gears 46 rotate together, so that the two first protection plates 41 are unfolded, and the material is loaded and unloaded;

[0063] Next, the first protection plate 41 is rotated upward to open, driving the movable rod 57 to move together, the top of the movable rod 57 rotates around the connecting shaft, and the bottom of the movable rod 57 drives the fixed column 58 to slide in the inner cavity of the movable groove 56. With the movement of the movable rod 57, the fixed column 58 pulls the support frame 51 upward, and the support frame 51 rotates around the fixed axis 53 to a horizontal position, and the material is placed on the support frame 51;

[0064] Then, through the operation of the servo motor 48, the first protective plate 41 is driven to rotate and close, so that the first protective plate 41 and the second protective plate 42 block the annealing furnace body 1, reduce heat loss, and play a protective role. When the annealing furnace body 1 is in operation, the heat generated flows with the air between the first circulation duct 32 and the second circulation duct 33 and the air duct 34, forming a plurality of small circulations on the inner wall of the annealing furnace body 1, which is convenient for controlling the flow of air and reducing heat loss.

[0065] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy-saving thermal cycle industrial annealing furnace, comprising: Annealing furnace body (1); A fixing frame (2), wherein the fixing frame (2) is arranged outside the annealing furnace body (1); It is characterized in that it also comprises a heat circulation structure (3), a protection structure (4) and a material rack structure (5), wherein the heat circulation structure (3) is arranged inside the annealing furnace body (1) and is used to transmit hot air when the annealing furnace body (1) is in operation; The protective structure (4) is installed on the fixing frame (2) and is used to form a shielding structure outside the annealing furnace body (1) and protect the annealing furnace body (1); The material rack structure (5) is connected to the protective structure (4) and is used to form a support mechanism on the front and back sides of the annealing furnace body (1) and to support the processed materials.

2. An energy-saving thermal cycle industrial annealing furnace according to claim 1, characterized in that: The thermal cycle structure (3) comprises: A slot plate (31), wherein the slot plate (31) is fixedly mounted on the top of the annealing furnace body (1); A first circulation pipe (32), the first circulation pipe (32) being connected to the slot plate (31), one end of which is fixedly inserted into one side of the annealing furnace body (1); A second circulation pipeline (33), wherein the second circulation pipeline (33) is arranged in the inner cavity of the annealing furnace body (1); The air duct (34) is arranged on both sides of the annealing furnace body (1) and is connected to the first circulation pipeline (32) and the second circulation pipeline (33).

3. The energy-saving thermal cycle industrial annealing furnace according to claim 1, characterized in that: The protective structure (4) comprises: A first protective plate (41), the first protective plate (41) being arranged on both sides of the top of the annealing furnace body (1) and being arranged in an L shape; A second protective plate (42), the second protective plate (42) being fixedly mounted on the bottom of the front and back sides of the annealing furnace body (1); A mounting block (43), the bottom end of which is fixedly connected to one side of the upper surface of the fixing frame (2); A mounting shaft (44) is fixedly inserted into one end of the first protective plate (41), and one end of the mounting shaft (44) is rotatably inserted into the top of the mounting block (43).

4. The energy-saving thermal cycle industrial annealing furnace according to claim 3, characterized in that: The protective structure (4) further comprises: A housing (45), wherein the housing (45) is fixedly mounted on the top of one side of the fixing frame (2); A first gear (46), the first gear (46) is fixedly inserted and connected to one end of the mounting shaft (44), and the first gear (46) is meshingly connected; A second gear (47), the second gear (47) being arranged below the first gear (46), the top of the second gear (47) being meshedly connected with the bottom of one of the first gears (46); A servo motor (48) is fixedly mounted on one side of the housing (45), and an output end of the servo motor (48) is meshedly connected with the second gear (47).

5. The energy-saving thermal cycle industrial annealing furnace according to claim 4, characterized in that: The material rack structure (5) comprises: Support frames (51), the support frames (51) being respectively arranged on the front and back sides of the annealing furnace body (1); A fixing block (52), wherein the fixing block (52) is fixedly connected to two sides of the outer wall of the second protective plate (42); A fixed shaft (53), one end of which is fixedly connected to one side of the top of the support frame (51), and the other end of which is rotatably interlaced with the fixed block (52).

6. The energy-saving thermal cycle industrial annealing furnace according to claim 5, characterized in that: The material rack structure (5) also includes: A fixing rod (54), one end of which is fixedly connected to one side of the supporting frame (51); A connecting block (55), wherein the connecting block (55) is arranged on both sides of the supporting frame (51), and one side of the outer wall of the connecting block (55) is fixedly connected to the other end of the fixing rod (54); A movable groove (56), wherein the movable groove (56) is arranged on the other side of the connecting block (55), and the movable groove (56) is arranged in a long strip shape.

7. The energy-saving thermal cycle industrial annealing furnace according to claim 6, characterized in that: The material rack structure (5) further comprises: Movable rods (57), the movable rods (57) being arranged on both sides of the first protective plate (41) and being used to connect the first protective plate (41) and the connecting block (55); A fixed column (58), wherein the fixed column (58) is fixedly inserted into the bottom of the movable rod (57), and one end of the fixed column (58) is inserted into the inner cavity of the movable groove (56); A connecting shaft is rotatably connected to the top of the movable rod (57), and one end of the connecting shaft is connected to one side of the first protective plate (41).

8. The energy-saving thermal cycle industrial annealing furnace according to claim 7, characterized in that: The support frame (51) comprises a fixing plate and a plurality of round rods, wherein the fixing plates are fixedly connected to one end of the round rods respectively, and the round rods are arranged between the fixing plates at equal intervals.

9. The energy-saving thermal cycle industrial annealing furnace according to claim 8, characterized in that: An observation window (6) is fixedly mounted on the top of the first protective plate (41) and the top of the second protective plate (42); the observation window (6) is made of a high-temperature resistant transparent material; the bottom end of the first protective plate (41) fits the top end of the second protective plate (42).

10. A method for using an energy-saving thermal cycle industrial annealing furnace according to any one of claims 1 to 9, characterized in that: The specific usage steps are as follows: Step 1: First, the servo motor (48) is operated to drive the second gear (47) to rotate, and the meshing action of the second gear (47) and the first gear (46) is used to drive one of the first gears (46) to rotate, and the meshing action of the two first gears (46) is used to make the two first gears (46) rotate together, so that the two first protection plates (41) are unfolded, and the material is loaded and unloaded; Step 2: Then, the first protection plate (41) is rotated upward to open, driving the movable rod (57) to move together, the top of the movable rod (57) rotates around the connecting shaft, and the bottom of the movable rod (57) drives the fixed column (58) to slide in the inner cavity of the movable groove (56). As the movable rod (57) moves, the fixed column (58) pulls the support frame (51) upward, and the support frame (51) rotates around the fixed axis (53) to a horizontal position, and the material is placed on the support frame (51); Step 3: Then, the servo motor (48) is operated to drive the first protective plate (41) to rotate and close, so that the first protective plate (41) and the second protective plate (42) shield the annealing furnace body (1), reduce heat loss, and play a protective role. When the annealing furnace body (1) is in operation, the heat generated flows along with the air between the first circulation pipe (32) and the second circulation pipe (33) and the air duct (34), forming a plurality of small circulations on the inner wall of the annealing furnace body (1), which facilitates the control of the air flow and reduces the heat loss.

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