Side-blowing jet-flow heating type steel annealing furnace

Abstract

The invention relates to the technical field of steel coil machining, in particular to a side-blowing jet-flow heating type steel annealing furnace which comprises a furnace body, electric heating pipes, a furnace door and a rail, and the electric heating pipes are fixedly and symmetrically arranged on the inner wall of the furnace body and used for heating the interior of the furnace to the specified annealing temperature; the furnace door is mounted at the opening of the furnace body in an up-down sliding manner for preventing heat loss and external air from entering the furnace; the track is fixedly arranged at the bottom of the furnace body, a furnace base is installed on the track through track wheels, and a support used for placing a steel coil is arranged on the furnace base; the device further comprises an air guide assembly, an adjusting assembly and an anti-falling assembly. The air guide assembly is arranged in an inner cavity of the furnace body and used for heating a steel coil in the furnace in a side-blowing jet-flow heating mode. The adjusting assembly is arranged on the furnace base and the support and used for adjusting the distance between the steel coil on the support and the nozzle. The anti-falling assembly is arranged on the furnace base and the support and used for synchronously fixing the steel coiled materials to prevent the steel coiled materials from falling off in the adjusting process when the adjusting assembly adjusts the distance.

Description

Technical Field

[0001] The present invention relates to the technical field of steel coil processing, and particularly to a side-blow jet heating type steel annealing furnace. Background Art

[0002] A steel coil annealing furnace is a heat treatment equipment, which mainly improves the internal structure and properties of the steel coil through heating and cooling treatments, enhances the plasticity and toughness of the material, and reduces the hardness at the same time, facilitating subsequent processing and forming. During the heating stage, the steel coil is placed in the annealing furnace and heated by the heat generated by heating elements (such as resistance wires, gas, etc.) to reach the predetermined annealing temperature. During the heat preservation stage, the steel coil is maintained at the predetermined temperature for a period of time to ensure sufficient changes in its internal structure. Finally, during the cooling stage, the steel coil is gradually cooled to room temperature to obtain the desired structure and properties.

[0003] The side-blow jet heating type steel coil annealing furnace generates high-pressure airflows through a blower installed at the top of the furnace body. These airflows are heated by a heating device and then sprayed onto the end faces of the steel coil in a side-blow manner. The steel coil is uniformly heated to the predetermined annealing temperature in the furnace and maintained for a period of time to achieve the transformation of the structure. Subsequently, the steel coil is gradually cooled to room temperature in the furnace or after leaving the furnace to complete the annealing process. During the actual processing operation, due to the different widths of steel coils in different batches during production, and the side-blow jet heating type annealing furnace mainly heats the end faces of the steel coil through side-blow airflows. When the width of the steel coil is relatively large, the core part is far from the heat source, so it receives less heat, resulting in a lower temperature of the core part. At the same time, the convective heat transfer formed by the airflows on the surface of the steel coil may also cause the temperatures of the two end faces to be higher than that of the core part. Since the temperature of the core part is lower than that of the end faces, it leads to uneven heating of the end part and the core part of the steel coil during the annealing process. This uneven annealing will cause differences in the internal microstructure of the steel coil, thereby affecting its overall performance. Summary of the Invention

[0004] Based on the above problems existing in the prior art, the problem to be solved by the present application is: the annealing furnace mainly heats the end faces of the steel coil through side-blow airflows, resulting in a situation where when the width of the steel coil is relatively large, the core part is far from the heat source, so it receives less heat, leading to a lower temperature of the core part.

[0005] The technical solution adopted by the present application to solve its technical problems is: a side-blow jet heating type steel annealing furnace, comprising: A furnace body; Electric heating tubes, which are symmetrically and fixedly arranged on the inner wall of the furnace body for heating the furnace to the specified annealing temperature; A furnace door, which is slidably installed up and down at the opening of the furnace body for preventing heat dissipation and the entry of external air into the furnace; Tracks, which are fixedly arranged at the bottom of the furnace body. A furnace base is installed on the tracks through track wheels, and a bracket for placing steel coils is arranged on the furnace base. An air guiding component, which is arranged in the inner cavity of the furnace body and is used to heat the steel coils in the furnace by means of side blowing jet heating. An adjustment component, which is arranged on the furnace base and the bracket and is used to adjust the distance between the steel coils on the bracket and the nozzles. An anti-falling component, which is arranged on the furnace base and the bracket and is used to fixedly hold the steel coils synchronously when the adjustment component adjusts the distance to prevent the steel coils from falling off during the adjustment process.

[0006] Preferably, a control system is arranged in the furnace body. The electric heating tubes are precisely adjusted by the control system, and the furnace door is opened or closed through a transmission chain.

[0007] Preferably, the air guiding component includes a plurality of blowers fixedly installed at the top of the furnace body. The blowers are provided with air inlets and air return outlets, and the air return outlets are fixedly communicated with connecting pipes.

[0008] Preferably, a through hole one and a through hole two are penetrated through the furnace body. The through hole one is communicated with the air inlet of the blower, and the through hole two is communicated with the connecting pipe of the air return outlet of the blower.

[0009] Preferably, the air guiding component further includes an air guiding box fixedly arranged in the inner cavity of the furnace body. A plurality of nozzles are arranged on the inner wall of the air guiding box close to the bracket. An air guiding cavity is arranged in the air guiding box, and the air guiding cavity is penetrated and communicated with the nozzles. An air guiding port is arranged at the top of the air guiding box, and an air guiding pipe is fixedly arranged on the air guiding port and is communicated with the through hole two.

[0010] Preferably, the adjustment component includes a first chute symmetrically arranged on the furnace base. A first fixed block is symmetrically and slidably connected in each of the first chutes, and the surfaces of the first fixed blocks that are not in contact with the chutes are fixedly connected to the bracket.

[0011] Preferably, the adjustment component further includes a second chute penetrated through the furnace base. The second chute is divided into two sections, namely a cylindrical section at both ends of the second chute and a square section in the middle of the second chute. A rotating block is rotatably connected in the cylindrical section of the second chute, and a reciprocating lead screw is arranged in the square section of the second chute. The two ends of the reciprocating lead screw are fixedly connected to the rotating blocks in the cylindrical section of the second chute respectively. Two fixed blocks are symmetrically threadedly connected to the outer surface of the reciprocating lead screw, and the outer surfaces of the two fixed blocks are fixedly arranged at the bottom of the bracket.

[0012] Preferably, the anti-falling component includes a number of fixed columns arranged on the side of the bracket close to the nozzle and a vertical plate fixedly arranged in the middle of the furnace base. A connection hole is penetrated through the fixed column, and a ball screw is penetrated and connected in the connection hole.

[0013] Preferably, one end of the ball screw is fixedly arranged on the vertical plate. A nut is arranged on the outer surface of the ball screw. The side wall of the nut is rotatably connected to the end of the fixed column away from the bracket. A fixed disk is fixedly installed on the outer surface of the nut. A number of grooves are penetrated through the fixed disk, and the grooves are arranged in a circumferential array on the fixed disk.

[0014] Preferably, a number of connection blocks are fixedly arranged on the fixed column. The connection blocks are arranged in a circumferential array with the axis of the fixed column as the reference line. A third chute is opened on each of the connection blocks. A slider is slidably connected in the third chute. A convex block is fixedly connected to each of the sliders, and the outer surface of the convex block slides on the inner wall of the groove.

[0015] The beneficial effect of this application is: For the side-blow jet heating type steel annealing furnace provided by this application, the rotation of the reciprocating screw is driven by rotating the rotating block. Due to the effect of the thread, the second fixed block will reciprocate on the reciprocating screw, thereby driving the up and down movement of the bracket and the steel coil. This adjustment method is accurate and reliable, suitable for steel coils of different heights and different annealing requirements, and ensures that the core of the steel coil can be close to or away from the heat source according to the actual length.

[0016] For the side-blow jet heating type steel annealing furnace provided by this application, while the adjustment component drives the bracket to move synchronously, the ball screw on the column moves linearly, and then the nut rotates. Due to the restriction of the convex block sliding on the inner wall of the fixed disk, the slider slides out of the third chute. Furthermore, while the adjustment component adjusts the position of the steel coil, the slider is synchronously extended, so that the slider forms a limit on the axis of the steel coil, avoiding the steel coil falling off during the adjustment process. By preventing the steel coil from falling off, the continuity and stability of the processing process can be ensured, the downtime and the number of repeated adjustments caused by the falling off can be reduced, and thus the overall processing efficiency can be improved. The falling off of the steel coil may cause problems such as a decrease in processing accuracy, surface scratches or deformation. By preventing the falling off, the correct position and posture of the steel coil can be ensured during the processing process, thereby guaranteeing the processing quality.

[0017] A side-blow jet heating type steel annealing furnace provided by the present application uses the side-blow jet heating method of the air guiding component to evenly blow hot air onto the steel coil, realizing the rapid heating of the steel coil. Since the air inlet is used to suck the hot air inside the furnace body, the air discharged through the air return port is hot air, and a cycle is formed in this way. It ensures that the hot air can be evenly blown onto the steel coil, realizing the rapid heating and uniform annealing of the steel coil. By recycling the hot air, the waste of energy is reduced and the energy utilization efficiency is improved.

[0018] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The following will refer to the drawings to make a further detailed description of the present application. Brief Description of the Drawings

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 is a schematic diagram of the partial structure of the inner cavity of the furnace body of the present invention; Figure 4 is a schematic diagram of the sectional structure of the air guiding box of the present invention; Figure 5 is a schematic diagram of the sectional structure of the whole side of the present invention; Figure 6 is a schematic diagram of the sectional structure of the whole front of the present invention; Figure 7 is a schematic diagram of the partial structure after sectioning of the adjustment component of the present invention; Figure 8 is a schematic diagram of the partial structure of the adjustment component and the anti-falling component of the present invention; Figure 9 For the present invention Figure 8 is an enlarged schematic diagram of part A in; Figure 10 is an exploded schematic diagram of the anti-falling component of the present invention.

[0020] Description of the Drawing Numbers: 1. Furnace body; 101. Electric heating tube; 102. Furnace door; 103. Track; 104. Furnace base; 2. Fan; 201. Air inlet; 202. Air return port; 203. Connecting pipe; 3. Through hole 1; 301. Through hole 2; 302. Air guide box; 303. Air guide cavity; 304. Air guide port; 305. Air guide pipe; 306. Nozzle; 4. Bracket; 401. Slide groove 1; 402. Fixed block 1; 403. Slide groove 2; 404. Rotating block; 405. Reciprocating lead screw; 406. Fixed block 2; 5. Fixed column; 501. Vertical plate; 502. Connecting hole; 503. Ball screw; 504. Nut; 505. Fixed disk; 506. Groove; 507. Connecting block; 508. Slide groove 3; 509. Slide block; 510. Protrusion. Detailed implementation manners

[0021] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0022] In order to enable those skilled in the art of this technology to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0023] Refer to Figures 1 to 10, A side-blowing jet heating type steel annealing furnace, comprising: a furnace body 1, which is the main structure of the annealing furnace and is usually made of high-strength and high-temperature-resistant materials, such as steel plates, and is reinforced with section steel to ensure that it can withstand high temperatures and the weight of the furnace charge. The inner wall of the furnace body 1 is provided with a heat-insulating layer to reduce heat loss and improve energy utilization efficiency; electric heating tubes 101, which are fixedly and symmetrically arranged on the inner wall of the furnace body 1 for heating the inside of the furnace to the specified annealing temperature. The inside of the furnace is heated to the specified annealing temperature by means of resistance heating. The electric heating tubes 101 are usually made of high-quality electric heating wires and insulating materials to ensure their safe and reliable operation; a furnace door 102, which is slidably installed up and down at the opening of the furnace body 1 for preventing heat loss and outside air from entering the furnace. It is slidably installed up and down at the opening of the furnace body 1 for preventing heat loss and outside air from entering the furnace. The furnace door 102 adopts a reliable sealing structure to ensure the stability of the furnace atmosphere and the annealing quality; a track 103, which is fixedly arranged at the bottom of the furnace body 1. A furnace base 104 is installed on the track 103 through track 103 wheels. A bracket 4 for placing steel coils is arranged on the furnace base 104. The track 103 is fixedly arranged at the bottom of the furnace body 1 for supporting and moving the furnace base 104. A bracket 4 for placing steel coils is arranged on the furnace base 104, and the distance between the brackets 4 can be adjusted as required to adapt to steel coils of different specifications.

[0024] Referring to Figures 1 to 10 , A side-blowing jet heating type steel annealing furnace further comprises a wind guiding assembly, which is arranged in the inner cavity of the furnace body 1 for heating the steel coil in the furnace by means of side-blowing jet heating; an adjusting assembly, which is arranged on the furnace base 104 and the bracket 4 and is used for adjusting the distance between the steel coil on the bracket 4 and the nozzle 306; an anti-falling assembly, which is arranged on the furnace base 104 and the bracket 4 and is used for synchronously fixing the steel coil when the adjusting assembly adjusts the distance to prevent the steel coil from falling off during the adjustment process. The wind guiding assembly is arranged in the inner cavity of the furnace body 1 and heats the steel coil in the furnace by means of side-blowing jet heating. The wind guiding assembly is used for adjusting the air flow direction and speed to achieve uniform heating of the steel coil. The adjusting assembly is arranged on the furnace base 104 and the bracket 4 and is used for adjusting the distance between the steel coil on the bracket 4 and the nozzle 306 to ensure that the steel coil can obtain the best heating effect during the annealing process. The anti-falling assembly is also arranged on the furnace base 104 and the bracket 4 and is used for synchronously fixing the steel coil when the adjusting assembly adjusts the distance to prevent the steel coil from falling off during the adjustment process and ensure the safety and stability of the annealing process.

[0025] Among them, a control system is provided inside the furnace body 1. The electric heating tube 101 is precisely adjusted by the control system, and the furnace door 102 is opened or closed through a transmission chain. Users can set the required annealing temperature through the control system. The system will monitor the temperature inside the furnace in real time and adjust according to the deviation between the actual temperature and the set temperature. The control system precisely adjusts the heating power of the electric heating tube 101 based on the temperature monitoring results to achieve rapid response and stable control of the temperature inside the furnace.

[0026] Further, for details, please refer to Figures 2 to 6 The air guiding assembly includes a number of blowers 2 fixedly installed at the top of the furnace body 1. The blower 2 is provided with an air inlet 201 and an air return port 202. The air return port 202 is fixedly connected to a connecting pipe 203. A through hole one 3 and a through hole two 301 are penetrated through the furnace body 1. The through hole one 3 is communicated with the air inlet 201 of the blower 2, and the through hole two 301 is communicated with the connecting pipe 203 of the air return port 202 of the blower 2. The air guiding assembly further includes an air guiding box 302 fixedly arranged inside the furnace body 1. A number of nozzles 306 are arranged on the inner wall of the air guiding box 302 close to the bracket 4. An air guiding cavity 303 is arranged inside the air guiding box 302. The air guiding cavity 303 is penetrated and communicated with the nozzles 306. An air guiding port 304 is arranged at the top of the air guiding box 302. A duct 305 is fixedly arranged on the air guiding port 304. The duct 305 is communicated with the through hole two 301.

[0027] Specifically, the blower 2 is the power source of the air guiding assembly. The blower 2 is provided with an air inlet 201 and an air return port 202 for inhaling and discharging hot air. The air inlet 201 is used to inhale the hot air inside the furnace body 1, and the hot air is discharged through the air return port 202, thus forming a cycle. The air return port 202 is connected to the through hole two 301 on the furnace body 1 through the connecting pipe 203 to ensure that the hot air can smoothly return to the blower 2 and be conveyed to the electric heating tube 101 for reheating. An air guiding cavity 303 is arranged inside the air guiding box 302 for guiding the hot air to flow towards the nozzles 306. The nozzles 306 are arranged on the inner wall of the air guiding box 302 close to the bracket 4 for evenly blowing the hot air onto the steel coil. The number and layout of the nozzles 306 can be adjusted according to the specifications of the steel coil and the annealing requirements. Through the design of the blower 2 and the nozzles 306, the air guiding assembly ensures that the hot air can be evenly blown onto the steel coil, achieving rapid heating and uniform annealing of the steel coil. Through the recycling of hot air, energy waste is reduced and energy utilization efficiency is improved.

[0028] Even further, for details, please refer to Figure 1 and Figures 5 to 8, the adjustment component includes chute 1 401 symmetrically arranged on the furnace base 104. Fixed blocks 1 402 are symmetrically and slidably connected inside chute 1 401. The sides of fixed blocks 1 402 that do not contact the chute are fixedly connected to the bracket 4. The design of chute 1 401 enables fixed blocks 1 402 to slide smoothly inside it, thus maintaining the stability of bracket 4 during the process of adjusting the lateral position of bracket 4 and the steel coil.

[0029] For details, please refer to Figures 5 to 8 , the adjustment component further includes chute 2 403 penetratingly opened on the furnace base 104. Chute 2 403 is divided into two sections, namely the cylindrical sections at both ends of chute 2 403 and the square section in the middle of chute 2 403. A rotating block 404 is rotatably connected inside the cylindrical section of chute 2 403, and a reciprocating lead screw 405 is arranged inside the square section of chute 2 403. The cylindrical section is used to rotatably connect the rotating block 404, and the rotating block 404 can rotate around the axis of the cylindrical section. A reciprocating lead screw 405 is arranged inside the square section. The two ends of the reciprocating lead screw 405 are fixedly connected to the rotating blocks 404 inside the cylindrical section of chute 2 403 respectively. In this way, when the rotating block 404 rotates, the reciprocating lead screw 405 will also rotate accordingly. The two ends of the reciprocating lead screw 405 are fixedly connected to the rotating blocks 404 inside the cylindrical section of chute 2 403 respectively. Fixed blocks 2 406 are symmetrically threadedly connected to the outer surface of the reciprocating lead screw 405. The outer surface of fixed blocks 2 406 is fixedly arranged at the bottom of bracket 4. The synchronous movement away from or towards each other of fixed blocks 2 406 causes the synchronous movement of bracket 4.

[0030] The user can rotate the rotating block 404 at the end of the reciprocating lead screw 405 through an external component, causing fixed blocks 2 406 to drive bracket 4 to move relatively or away from each other, so as to adjust the lateral position of bracket 4 and the steel coil, making the position of the steel coil relative to the nozzle 306 change. This adjustment method is simple and intuitive and is applicable to steel coils of different widths. The user can drive the rotation of the reciprocating lead screw 405 by rotating the rotating block 404. Due to the effect of the thread, fixed blocks 2 406 will reciprocate on the reciprocating lead screw 405, thus driving the up and down movement of bracket 4 and the steel coil. This adjustment method is accurate and reliable and is applicable to steel coils of different heights and different annealing requirements, ensuring that the core of the steel coil can be operated closer to or farther from the heat source according to the actual length.

[0031] For details, please refer to Figure 1 、 Figures 5 to 6 and Figures 8 to 10, the anti-falling component includes several fixing columns 5 arranged on the side of the bracket 4 close to the nozzle 306 and a vertical plate 501 fixedly arranged in the middle of the furnace base 104. A connection hole 502 is penetrated through the fixing column 5, and a ball screw 503 is penetrated and connected in the connection hole 502. One end of the ball screw 503 is fixedly arranged on the vertical plate 501. A nut 504 is arranged on the outer surface of the ball screw 503. The side wall of the nut 504 is rotatably connected to one end of the fixing column 5 away from the bracket 4. A fixing disk 505 is fixedly installed on the outer surface of the nut 504. Several grooves 506 are penetrated through the fixing disk 505, and the grooves 506 are arranged in a circumferential array on the fixing disk 505. Several connection blocks 507 are fixedly arranged on the fixing column 5. The connection blocks 507 are arranged in a circumferential array with the axis of the fixing column 5 as the reference line. A third chute 508 is opened on each of the connection blocks 507. A slider 509 is slidably connected in the third chute 508. A convex block 510 is fixedly connected to each of the sliders 509. The outer surface of the convex block 510 slides on the inner wall of the groove 506.

[0032] When the positions of the brackets 4 move away from each other, the ball screw 503 on the vertical plate 501 moves linearly, thereby causing the nut 504 to rotate. Due to the restriction of the convex block 510 sliding on the inner wall of the fixing disk 505, the slider 509 slides out of the third chute 508. Thus, while the adjustment component adjusts the position of the steel coil, the slider 509 is synchronously extended, so that the slider 509 forms a limit on the axis of the steel coil, avoiding the falling off of the steel coil during the adjustment process. By preventing the steel coil from falling off, the continuity and stability of the processing process can be ensured, the downtime and the number of repeated adjustments caused by the falling off can be reduced, thereby improving the overall processing efficiency. The falling off of the steel coil may cause problems such as a decrease in processing accuracy, surface scratches or deformation. By preventing the falling off, the correct position and posture of the steel coil can be ensured during the processing process, thereby guaranteeing the processing quality.

[0033] Through all the above embodiments, the specific solution of the present scheme is as follows: Before heating: The furnace base 104 is extended from the furnace body 1 through the track 103. Then, the steel coil is lifted onto the fixed column 5 by a crane or other equipment. By an external component, the rotating block 404 at the end of the reciprocating lead screw 405 is rotated, prompting the second fixed block 406 to drive the bracket 4 to move relatively or away from each other, thereby adjusting the lateral position of the bracket 4 and the steel coil to change the position of the steel coil relative to the nozzle 306. This adjustment method is simple and intuitive and is applicable to steel coils of different widths. The user can drive the rotation of the reciprocating lead screw 405 by rotating the rotating block 404. Due to the effect of the thread, the second fixed block 406 will reciprocate on the reciprocating lead screw 405, thereby driving the up and down movement of the bracket 4 and the steel coil. This adjustment method is accurate and reliable and is applicable to steel coils of different heights and different annealing requirements, ensuring that the core of the steel coil can be operated closer to or farther from the heat source according to the actual length; further, when the brackets 4 move away from each other, the ball screw 503 on the vertical plate 501 moves linearly, and then the lead nut 504 rotates. Due to the limitation of the convex block 510 sliding on the inner wall of the fixed disk 505, the slider 509 slides out of the third chute 508, and then the slider 509 is synchronously extended while the position of the steel coil is adjusted by the adjustment component, so that the slider 509 forms a limit on the axis of the steel coil, avoiding the steel coil falling off during the adjustment process. Finally, the furnace base 104 is pushed into the furnace body 1 through the track 103. By preventing the steel coil from falling off, the continuity and stability of the processing process can be ensured, the downtime and the number of repeated adjustments caused by the fall can be reduced, and thus the overall processing efficiency can be improved. The falling off of the steel coil may cause problems such as a decrease in processing accuracy, surface scratches or deformation. By preventing the fall, it can be ensured that the steel coil maintains the correct position and attitude during the processing process, thereby guaranteeing the processing quality.

[0034] During heating: The electric heating tube 101 starts to heat up, raising the temperature inside the furnace to the specified annealing temperature. At the same time, the air guiding component blows hot air evenly onto the steel coil in the way of side blowing jet heating, realizing the rapid heating of the steel coil. The air inlet 201 is used to inhale the hot air inside the furnace body 1, and the hot air is discharged through the air return port 202, and this reciprocates to form a cycle. The air return port 202 is connected to the second through hole 301 on the furnace body 1 through the connecting pipe 203 to ensure that the cooled air can smoothly return to the blower 2 and be transported to the electric heating tube 101 for reheating. A wind guiding cavity 303 is arranged inside the wind guiding box 302 to guide the hot air to flow towards the nozzle 306. The nozzle 306 is arranged on the inner wall of the wind guiding box 302 close to the bracket 4 side to evenly blow the hot air onto the steel coil. The number and layout of the nozzles 306 can be adjusted according to the specifications of the steel coil and the annealing requirements. Through the design of the blower 2 and the nozzle 306, the air guiding component ensures that the hot air can be evenly blown onto the steel coil, realizing the rapid heating and uniform annealing of the steel coil. Through the recycling of hot air, the waste of energy is reduced, and the energy utilization efficiency is improved.

[0035] Insulation process: When the temperature in the furnace reaches the specified value, the electric heating tube 101 enters the insulation state to maintain the stability of the temperature in the furnace. At this time, the steel coil stays in the furnace for a certain period of time to complete the annealing process.

[0036] Cooling process: After the annealing is completed, the furnace door 102 is opened, and the steel coil is moved out of the furnace body 1 along with the furnace base 104 for natural cooling or forced cooling.

[0037] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary. Under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order. There are many other variations in different aspects of the present invention as described above, and they are not provided in detail for the sake of brevity.

[0038] The present invention aims to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A side-blowing jet-heating steel annealing furnace, characterized in that: include: Furnace body (1); An electric heating tube (101), the electric heating tube (101) being fixedly and symmetrically arranged on the inner wall of the furnace body (1) and used for heating the furnace to a specified annealing temperature; A furnace door (102), the furnace door (102) being slidably mounted up and down at the opening of the furnace body (1) to prevent heat loss and outside air from entering the furnace; A track (103), the track (103) being fixedly arranged at the bottom of the furnace body (1), a furnace base (104) being mounted on the track (103) via a track (103) wheel, and a bracket (4) for placing a steel coil being arranged on the furnace base (104); An air guide assembly, the air guide assembly being arranged in the inner cavity of the furnace body (1) and used for heating the steel coil in the furnace by side-blowing jet heating; An adjustment component, the adjustment component being arranged on the furnace base (104) and the support (4), and being used to adjust the distance between the steel coil on the support (4) and the nozzle (306); An anti-falling component is arranged on the furnace base (104) and the bracket (4), and is used to synchronously fix the steel coil when the adjustment component adjusts the spacing to prevent the steel coil from falling off during the adjustment process.

2. A side-blowing jet-heating steel annealing furnace according to claim 1, characterized in that: A control system is provided in the furnace body (1); the electric heating tube (101) is precisely adjusted by the control system; and the furnace door (102) is opened or closed by a transmission chain.

3. The side-blowing jet-heating steel annealing furnace according to claim 1, characterized in that: The air guide assembly comprises a plurality of fans (2) fixedly mounted on the top of the furnace body (1), the fans (2) being provided with air inlets (201) and air return ports (202), the air return ports (202) being fixedly connected to a connecting pipe (203).

4. The side-blowing jet-heating steel annealing furnace according to claim 3, characterized in that: The furnace body (1) is provided with a through hole 1 (3) and a through hole 2 (301); the through hole 1 (3) is in communication with an air inlet (201) of the fan (2); and the through hole 2 (301) is in communication with a connecting pipe (203) of an air return port (202) of the fan (2).

5. The side-blowing jet-heating steel annealing furnace according to claim 1, characterized in that: The air guide assembly further comprises an air guide box (302) fixedly arranged in the inner cavity of the furnace body (1); a plurality of nozzles (306) are arranged on the inner wall of the air guide box (302) on a side close to the bracket (4); an air guide cavity (303) is arranged in the air guide box (302); the air guide cavity (303) is connected to the nozzles (306); an air guide port (304) is arranged at the top of the air guide box (302); an air guide pipe (305) is fixedly arranged on the air guide port (304); the air guide pipe (305) is connected to the second through hole (301).

6. The side-blowing jet-heating steel annealing furnace according to claim 1, characterized in that: The adjustment assembly comprises a slide groove (401) symmetrically arranged on the furnace base (104), a fixed block (402) symmetrically slidably connected in the slide groove (401), and a side of the fixed block (402) not in contact with the slide groove is fixedly connected to the bracket (4).

7. The side-blowing jet-heating steel annealing furnace according to claim 6, characterized in that: The adjustment component also includes a second slide groove (403) that penetrates and is opened on the furnace base (104), and the second slide groove (403) is divided into two sections, which are cylindrical sections at both ends of the second slide groove (403) and a square section in the middle of the second slide groove (403). A rotating block (404) is rotatably connected in the cylindrical section of the second slide groove (403), and a reciprocating screw (405) is arranged in the square section of the second slide groove (403). The two ends of the reciprocating screw (405) are respectively fixedly connected to the rotating block (404) in the cylindrical section of the second slide groove (403), and the outer surface of the reciprocating screw (405) is symmetrically threadedly connected to the second fixed block (406), and the outer surface of the second fixed block (406) is fixedly arranged at the bottom of the bracket (4).

8. The side-blowing jet-heating steel annealing furnace according to claim 1, characterized in that: The anti-falling assembly comprises a plurality of fixing columns (5) arranged on a side of the bracket (4) close to the nozzle (306) and a vertical plate (501) fixedly arranged in the middle of the furnace base (104), wherein the fixing columns (5) are provided with connecting holes (502) extending therethrough, and a ball screw (503) is connected to and extending through the connecting holes (502).

9. The side-blowing jet-heating steel annealing furnace according to claim 8, characterized in that: One end of the ball screw (503) is fixedly arranged on the vertical plate (501); a nut (504) is arranged on the outer surface of the ball screw (503); a side wall of the nut (504) is rotatably connected to an end of the fixed column (5) away from the bracket (4); a fixed disk (505) is fixedly installed on the outer surface of the nut (504); a plurality of grooves (506) are penetrated on the fixed disk (505); and the grooves (506) are arranged in a circular pattern on the fixed disk (505).

10. The side-blowing jet-heating steel annealing furnace according to claim 9, characterized in that: A plurality of connection blocks (507) are fixedly arranged on the fixed column (5), and the connection blocks (507) and the fixed column (5) are arranged in a circle with a reference line as the axis core, and each of the connection blocks (507) is provided with a slide groove (508), and a slider (509) is slidably connected in the slide groove (508), and each of the sliders (509) is fixedly connected with a protrusion (510), and the outer surface of the protrusion (510) slides on the inner wall of the groove (506).

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