Steel material injection drying device

Abstract

The application relates to a steel material blowing drying device and relates to the field of steel production equipment, which comprises a frame body and a plurality of chain wheel conveyors arranged in the frame body, a plurality of protrusions are fixedly connected to chains of the chain wheel conveyors, one inner side wall of the frame body is slidably connected with a duct, one side of the duct close to the frame body entrance is in an open state, and one side of the duct close to the chain wheel conveyor is also in an open state; at least two air supply fans are installed on the side walls opposite to the frame body, the rotating axes of the air supply fans and the conveying direction of the chain wheel conveyor form an angle, a transmission assembly for transmitting power generated when the duct moves to the air supply fans so that the air supply fans rotate is arranged in the frame body; a driving assembly for driving the duct to move in a direction perpendicular to the length of the chain wheel conveyor is further arranged in the frame body. The application has the effect of better drying liquid attached to the inner side walls of the steel material.

Description

Technical Field

[0001] This application relates to the field of equipment for steel production, and in particular to a steel spray drying apparatus. Background Technology

[0002] Spray drying equipment is a commonly used device for surface treatment of steel. When surface treatment of steel, it needs to be immersed in different liquids in sequence. After the steel is taken out of the liquid, the liquid on the surface of the steel needs to be dried to form a film. In order to accelerate the film formation speed on the surface of the steel, the steel needs to be sent into a spray drying equipment for drying treatment.

[0003] A commonly used jet drying device includes a rectangular shell with open ends, multiple parallel sprocket conveyor belts located inside the shell, heating tubes mounted in the shell, and several fans installed on the top of the shell. When the jet drying device is working, the sprocket conveyor belts operate, and the fans and heating tubes are started simultaneously. The heating tubes dissipate heat into the shell, and the fans accelerate the airflow inside the shell, making the temperature in all parts of the frame more uniform and the steel heated more evenly.

[0004] For steel materials with complex cross-sectional structures, such as H-beams, the surface of the steel can obstruct the airflow to the frame, and the steel is also quite long, making it difficult for the warm air in the spray drying device to enter the middle of the steel, and the liquid adhering to the inner wall of the steel is not easily dried. Summary of the Invention

[0005] To better dry the liquid adhering to the inner wall of steel, this application provides a steel spray drying device.

[0006] The steel spray drying device provided in this application adopts the following technical solution:

[0007] A steel spray drying device includes a frame and multiple sprocket conveyor belts disposed in the frame. Multiple protrusions are fixedly connected to the chains of the sprocket conveyor belts. A guide tube is slidably connected to one of the inner side walls of the frame. The side of the guide tube near the frame entrance is open, and the side of the guide tube near the sprocket conveyor belt is also open.

[0008] At least two fans are installed on the side wall opposite to the duct and the frame. The rotation axis of the fans is at an angle to the conveying direction of the sprocket conveyor belt. The frame is provided with a transmission component that transmits the power generated when the duct moves to the fans, thereby causing the fans to rotate.

[0009] The frame is also equipped with a drive assembly whose drive guide extends in a direction perpendicular to the length of the sprocket conveyor belt.

[0010] By adopting the above technical solution, the sprocket conveyor belt transports steel. There is a piece of steel between two adjacent protrusions. When the steel moves into the guide tube and abuts against the end face of the guide tube, the protrusions drive the steel and the guide tube to continue moving towards the discharge port of the frame. At the same time as the guide tube moves, the transmission component works and drives the fan to rotate. The fan rotates and sends air from the frame into the steel, making it easier to dry the liquid on the inner wall of the steel. As the guide tube continues to move towards the discharge port of the frame, the drive component drives the guide tube to move away from the steel. When the guide tube loses contact with the steel, the sprocket conveyor belt continues to transport the steel. The transmission component and the drive component drive the guide tube to reset, thereby drying the next piece of steel.

[0011] Optionally, the transmission assembly includes a fixed rack fixedly connected to the inner side wall of the frame near the guide tube. A limiting plate is fixedly connected to the side wall of the fixed rack near the middle of the frame. The length directions of the limiting plate and the fixed rack are both along the length direction of the sprocket conveyor belt. A telescopic rod is fixedly connected to the rotating shaft of the fan. A strip-shaped hole is opened on the limiting plate, and the telescopic rod is inserted into the strip-shaped hole. A gear is fixedly connected to one end of the telescopic rod. The gear is located between the limiting plate and the corresponding side wall of the frame, and the gear meshes with the fixed rack.

[0012] By adopting the above technical solution, when the steel pushes the duct to move, the duct drives the gear to move through the telescopic rod. When the gear moves, the limiting plate limits the gear, so that the gear and the fixed rack are engaged. The gear and the fixed rack cooperate to make the gear rotate while moving. The rotation of the gear drives the telescopic rod and the corresponding fan to rotate, thereby delivering air in the frame to the steel and generating airflow in the steel.

[0013] Optionally, a driven rack is slidably connected to the side wall corresponding to the fixed rack of the frame. The driven rack is parallel to the fixed rack and meshes with a gear. The driven rack is arranged along the length direction of the sprocket conveyor belt.

[0014] By adopting the above technical solution, when the gear rotates, the gear meshes with the driven rack. The rotation of the gear drives the driven rack to move, and the driven rack limits the gear, so that the gear and the fixed rack can mesh better.

[0015] Optionally, the telescopic rod includes a support rod fixedly connected to the end face of the gear near the guide tube. The support rod has a rectangular cross-section. A sleeve corresponding to the support rod is fixedly connected to the guide tube. The support rod is slidably inserted into the sleeve. A connecting spring is fixedly connected to the inner bottom wall of the sleeve. The connecting spring is fixedly connected to the support rod.

[0016] By adopting the above technical solution, when the gear rotates, the gear drives the support rod, sleeve and fan to rotate.

[0017] Optionally, the drive assembly includes a guide portion located on the side of the guide tube away from the sprocket conveyor belt. The guide portion is fixedly connected to the frame. The side wall of the guide portion near the guide tube gradually slopes from the outlet of the frame to the inlet and towards the middle of the frame. The guide tube contacts the guide portion. A return spring is fixedly connected to the guide tube near the outlet of the frame. The end of the return spring away from the guide tube is fixedly connected to the side wall of the limiting plate.

[0018] By adopting the above technical solution, in the initial state, the guide tube and the telescopic rod are located near the feed inlet of the frame in the guide section. At this time, the telescopic rod is in a stretched state, and the return spring is in a natural state. During the process of the steel pushing the guide tube to move towards the feed outlet of the frame, the guide tube compresses the return spring, and the telescopic rod gradually restores its deformation and pulls the guide tube to move away from the steel. When the guide tube is no longer in contact with the steel, the guide tube is located near the feed outlet of the frame in the guide section. The return spring restores its deformation and pushes the guide tube to move towards the feed inlet of the frame. When the guide tube moves, the guide section pushes the guide tube to move towards the middle of the frame. At the same time as the guide tube moves, it also stretches the telescopic rod.

[0019] Optionally, the fixed rack is inclined, with the end of the fixed rack near the outlet of the frame being higher than the end of the fixed rack near the inlet of the frame.

[0020] By adopting the above technical solution, when the guide tube moves the steel towards the discharge port of the frame, the gear and the fixed rack work together to move the guide tube upward. The movement of the guide tube causes the corresponding end of the steel to rotate upward, making the steel tilted. The liquid accumulated in the steel can slide down the tilted steel to the outside of the steel, thereby drying the inner wall of the steel more quickly.

[0021] Optionally, a sealing plate is slidably connected to one end of the guide tube near the feed inlet of the frame, and the guide tube is also provided with a control component for controlling the movement of the sealing plate.

[0022] By adopting the above technical solution, when the steel enters the conduit, the control component controls the sealing plate to move upward, thereby sealing the conduit and allowing more air to pass through the steel, thus drying the inner wall of the steel faster.

[0023] Optionally, the control component includes a mating plate located in and slidably connected to the guide tube, the mating plate sliding along the length of the sprocket conveyor belt, a limit spring fixedly connected to the inner side wall of the guide tube near the discharge port of the frame, the limit spring being fixedly connected to the mating plate, and a pull rope fixedly connected to the mating plate, the end of the pull rope away from the mating plate being fixedly connected to the sealing plate.

[0024] By adopting the above technical solution, when the steel enters the guide tube and comes into contact with the mating plate, the protrusion drives the steel to continue pushing the mating plate to move. At the same time, the mating plate moves and compresses the limit spring. The movement of the mating plate drives the corresponding end of the pull rope to move. The movement of the pull rope pulls the sealing plate upward, thereby sealing the end of the guide tube near the feed inlet of the frame. When the steel leaves the guide tube, the limit spring returns to its original deformation and pushes the mating plate to move to the initial position. At this time, the sealing plate moves downward under the action of gravity, thereby opening the end of the guide tube near the feed inlet of the frame.

[0025] Optionally, a counterweight is fixedly connected to the side wall of the sealing plate away from the conduit.

[0026] By adopting the above technical solution, the sealing plate can be lowered more smoothly.

[0027] Optionally, a T-shaped connecting block is fixedly connected to both the upper and lower surfaces of the mating plate, and a connecting hole corresponding to the connecting block is opened on the guide tube. The length direction of the connecting hole is set along the length direction of the sprocket conveyor belt, and each connecting block is slidably inserted into the corresponding connecting hole.

[0028] By adopting the above technical solution, when the sealing plate moves, the sealing plate drives the connecting block to move, and the connecting block cooperates with the connecting hole to make the sealing plate and the conduit slide together.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] By setting up a frame, sprocket conveyor belt, protrusions, conduits, fan, transmission components and drive components, it is possible to better dry the liquid adhering to the inner wall of the steel.

[0031] By setting up fixed racks, gears, and telescopic rods, air in the frame can be transported into the steel, creating airflow within the steel.

[0032] By setting a guide and a return spring, the conduit can disengage from the steel, and the conduit returns to its original position to dry the next piece of steel. Attached Figure Description

[0033] Figure 1 This is a cross-sectional view illustrating the overall structure of the jet drying device in the embodiments of this application.

[0034] Figure 2 This is a cross-sectional view illustrating the positional relationship between the fan and the duct in an embodiment of this application.

[0035] Figure 3 This is a cross-sectional view illustrating a portion of the transmission component structure in an embodiment of this application.

[0036] Figure 4 This is a cross-sectional view illustrating the overall structure of the telescopic rod in an embodiment of this application.

[0037] Figure 5 This is a cross-sectional view illustrating the overall structure of the control component in an embodiment of this application.

[0038] Figure 6 It is a manifestation Figure 5 Enlarged view of the structure at point A in the middle.

[0039] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Feed inlet; 12. Discharge outlet; 13. Heating tube; 14. Fan; 15. Groove; 16. Mating groove; 2. Sprocket conveyor belt; 21. Protrusion; 3. Guide tube; 31. Slide groove; 32. Connecting hole; 4. Exhaust fan; 5. Transmission assembly; 51. Telescopic rod; 511. Sleeve; 512. Support rod; 513. Connecting spring; 52. Fixed rack; 53. Driven rack; 531. Mating block; 54. Gear; 55. Limiting plate; 551. Strip hole; 6. Drive assembly; 61. Guide part; 62. Return spring; 7. Sealing plate; 71. Slide rod; 72. Counterweight; 8. Control assembly; 81. Mating plate; 811. Connecting block; 82. Limiting spring; 83. Pull rope; 84. Fixing ring. Implementation

[0040] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0041] This application discloses a steel spray drying apparatus. (Refer to...) Figure 1 and Figure 2 The spray drying device includes a ring-shaped frame 1, with one open end of the frame 1 serving as the feed inlet 11 and the other end of the frame 1 away from the feed inlet 11 serving as the discharge outlet 12. The frame 1 contains multiple parallel sprocket conveyor belts 2, which are aligned with the length of the frame 1 and arranged along the width of the frame 1. Both ends of the chain are located outside the frame 1. Multiple protrusions 21 are fixedly connected to the chain of the sprocket conveyor belts 2, and the protrusions 21 are evenly distributed on the chain. A heating tube 13 is fixedly connected to the inner top surface and inner bottom wall of the frame 1, and a fan 14 is fixedly connected to the top of the frame 1.

[0042] During the drying of steel, multiple sprocket conveyor belts 2 cooperate to support the steel. The steel is located between two adjacent protrusions 21, and the length of the steel is placed along the width of the frame 1. A guide tube 3 is slidably connected to the inner wall of one of the long sides of the frame 1. The cross-section of the guide tube 3 is rectangular, and the length of the guide tube 3 is set along the length of the frame 1. The side of the guide tube 3 near the middle of the frame 1 is open, and the end of the guide tube 3 near the feed port 11 is also open. The end of the guide tube 3 near the discharge port 12 is blocked.

[0043] Reference Figure 2 and Figure 3 Multiple fans 4 are fixedly connected to the long side wall of the conduit 3. The multiple fans 4 are arranged along the length of the conduit 3. The housing of the fans 4 is embedded in the conduit 3, and the rotation axis of the fans 4 is perpendicular to the length of the frame 1. The frame 1 is also provided with a transmission assembly 5 that drives the fans 4 to rotate. The transmission assembly 5 includes a telescopic rod 51 that is fixedly connected to the rotation axis of the fans 4.

[0044] Reference Figure 3 and Figure 4 The telescopic rod 51 includes a sleeve 511 fixedly connected to one end of the rotating shaft of the fan 4 near the edge of the frame 1, and a support rod 512 slidably inserted into the sleeve 511. The support rod 512 has a rectangular cross-section. A connecting spring 513 is fixedly connected to the inner bottom wall of the sleeve 511. The end of the connecting spring 513 away from the guide tube 3 is fixedly connected to the corresponding end face of the support rod 512.

[0045] A groove 15 is provided on the side wall corresponding to the sleeve 511 of the frame 1. The length direction of the groove 15 is set along the length direction of the frame 1. The groove 15 is inclined. The end of the groove 15 near the feed port 11 is lower than the end of the groove 15 near the discharge port 12. The transmission assembly 5 also includes a fixed rack 52 fixedly connected to the groove wall at the bottom of the groove 15 and a driven rack 53 corresponding to the fixed rack 52.

[0046] A plurality of mating blocks 531 are fixedly connected to the upper surface of the driven rack 53. The plurality of mating blocks 531 are evenly arranged along the length direction of the driven rack 53. A mating groove 16 corresponding to the mating blocks 531 is provided on the top groove wall of the groove 15. The length direction of the mating groove 16 is set along the length direction of the frame 1. Each mating block 531 is slidably inserted into the mating groove 16. The mating blocks 531 and the mating groove 16 cooperate to make the driven rack 53 slidably connected to the frame 1. The teeth of the driven rack 53 and the fixed rack 52 are oriented in a direction that is close to each other, and the length directions of both the fixed rack 52 and the driven rack 53 are set along the length direction of the frame 1.

[0047] A limiting plate 55 with a sealing groove 15 is fixedly connected to the inner wall of the frame 1 near the conduit 3. The limiting plate 55 is fixedly connected to the fixed rack 52. A strip hole 551 is opened on the limiting plate 55, and the upper and lower walls of the strip hole 551 are parallel to the lower surface of the fixed rack 52. One end of the support rod 512 extends into the groove 15 through the strip hole 551. A gear 54 is fixedly connected to the end of the support rod 512 located in the groove 15. The gear 54 meshes with the fixed rack 52 and the driven rack 53.

[0048] Reference Figure 3The frame 1 is also provided with a drive assembly 6 for moving the guide tube 3 along the width direction of the frame 1. The drive assembly 6 includes a guide part 61 fixedly connected to the side wall of the limiting plate 55 near the guide tube 3. In other embodiments, the guide part 61 can also be fixedly connected to the side wall of the frame 1 near the guide tube 3. The side wall of the guide part 61 near the guide tube 3 gradually slopes towards the middle of the frame 1 from the discharge port 12 towards the inlet port 11. The side wall of the guide part 61 near the guide tube 3 contacts the guide tube 3. In this embodiment, the guide part 61 is a guide plate. The drive assembly 6 also includes a return spring 62 fixedly connected to one end of the guide tube 3 near the discharge port 12. The end of the return spring 62 away from the guide tube 3 is fixedly connected to the side wall of the limiting plate 55.

[0049] When the spray drying device is working, the previous process conveys the steel to the sprocket conveyor belt 2. A piece of steel is placed between each of the two adjacent protrusions 21, and there is a gap between the two adjacent pieces of steel. The operation of the sprocket conveyor belt 2 drives the steel to move towards the discharge port 12. The initial state is when the steel has not moved to contact the guide tube 3. At this time, the reset spring 62 is in the natural state, and the guide tube 3 is located in the guide part 61 near the feed port 11. At this time, the connecting spring 513 is in the stretched state.

[0050] When the steel moves to contact the conduit 3 near the outlet 12, the protrusion 21 pushes the steel and the conduit 3 to continue moving. While the conduit 3 moves, it also compresses the return spring 62. The movement of the conduit 3 drives the sleeve 511, the support rod 512 and the gear 54 to move towards the outlet 12. When the gear 54 moves, the gear 54 engages with the fixed rack 52, thereby causing the gear 54 to drive the support rod 512, the sleeve 511 and the fan 4 to rotate. The rotation of the fan 4 draws the air in the frame 1 into the conduit 3 and sends it into the steel, accelerating the air flow inside the steel and better drying the liquid adhering to the inner wall of the steel.

[0051] As gear 54 moves, it meshes with driven rack 53, causing driven rack 53 to drive mating block 531 to move along mating groove 16. Driven rack 53 and limiting plate 55 cooperate to limit gear 54, reducing the occurrence of rapid wear of gear 54 during movement. As guide tube 3 continues to move, gear 54 meshes with fixed rack 52, so that gear 54 can drive support rod 512, sleeve 511 and guide tube 3 to move upward. As guide tube 3 moves upward, it drives the corresponding end of steel to rotate upward, so that steel tilts. The liquid accumulated in steel can flow out of steel along the tilted steel, accelerating the drying speed of steel.

[0052] As the steel moves along the length of the frame 1, the connecting spring 513 gradually recovers its deformation and pulls the sleeve 511 and the guide tube 3 to move closer to the limiting plate 55. When the guide tube 3 moves to the point where it is no longer in contact with the steel, the end of the steel near the guide tube 3 falls onto the sprocket conveyor belt 2 under its own weight. The sprocket conveyor belt 2 then transports the steel to the discharge port 12.

[0053] When the steel material is no longer in contact with the guide tube 3, the return spring 62 returns to its original shape and pushes the guide tube 3 and the gear 54 to move closer to the feed inlet 11. At the same time, the guide part 61 pushes the guide tube 3 and the sleeve 511 to move away from the limiting plate 55. The movement of the sleeve 511 stretches the connecting spring 513. When both the return spring 62 and the connecting spring 513 return to their initial state, the guide tube 3 returns to its initial position, thereby drying the next piece of steel.

[0054] In order to enable the fan 4 to better deliver air into the steel, a sealing plate 7 is slidably connected to one end of the duct 3 near the feed inlet 11. A sliding rod 71 is fixedly connected to the side wall of the sealing plate 7 near the duct 3. The length of the sliding rod 71 is set along the height direction of the frame 1. A groove 31 corresponding to the sliding rod 71 is opened at one end of the duct 3 near the feed inlet 11. The sliding rod 71 is slidably inserted into the groove 31. The duct 3 is also provided with a control component 8 for controlling the movement of the sealing plate 7 along the height direction of the frame 1.

[0055] Reference Figure 3 and Figure 5 The control component 8 includes a mating plate 81 disposed in the conduit 3. A T-shaped connecting block 811 is fixedly connected to both the upper and lower surfaces of the mating plate 81. A connecting hole 32 corresponding to the connecting block 811 is provided on both the upper and lower surfaces of the conduit 3. The length direction of the connecting hole 32 is set along the length direction of the frame 1. Each connecting block 811 is slidably inserted into the corresponding connecting hole 32. The connecting block 811 protrudes out of the conduit 3. The connecting block 811 cooperates with the connecting hole 32 to make the mating plate 81 and the conduit 3 slidably connected.

[0056] A limiting spring 82 is fixedly connected to the side wall of the mating plate 81 near the discharge port 12. The end of the limiting spring 82 away from the mating plate 81 is fixedly connected to the inner side wall of the guide tube 3 near the discharge port 12. A pull rope 83 is fixedly connected to the connecting block 811 below. The end of the pull rope 83 away from the connecting block 811 is fixedly connected to the lower surface of the sealing plate 7. (Refer to...) Figure 5 and Figure 6 A fixing ring 84 is also fixedly connected to the bottom wall of the conduit 3. The pull rope 83 is threaded through the fixing ring 84. In order to enable the sealing plate 7 to fall better in its natural state, a counterweight 72 is fixedly connected to the side wall of the sealing plate 7 near the feed inlet 11.

[0057] In the initial state, the limiting spring 82 is in its natural state, the mating plate 81 is located at the end of the guide tube 3 near the feed port 11, and the sealing plate 7 hangs down naturally under its own weight and the action of the counterweight 72. The upper surface of the sealing plate 7 is lower than the inner bottom wall of the guide tube 3. When the sprocket conveyor belt 2 pushes the steel into the guide tube 3 and contacts the mating plate 81, as the protrusion 21 continues to push the steel to move, the steel pushes the mating plate 81 and the connecting block 811 to move towards the discharge port 12. While the mating plate 81 moves, it compresses the limiting spring 82. The connecting block 811 moves and pulls the corresponding end of the pull rope 83 to move towards the discharge port 12.

[0058] While pulling rope 83, the mating plate 81 is also pulled upward until the mating plate 81 blocks the guide tube 3. At this time, the limit spring 82 is in the ultimate compression state, and the pull rope 83 is taut. When the steel continues to move, due to the limit of the limit spring 82, the steel no longer pushes the mating plate 81 to move closer to the discharge port 12. The steel drives the guide tube 3 to move. When the guide tube 3 moves, the fan 4 rotates, thereby drawing air from the frame 1 into the guide tube 3. At this time, only the end of the guide tube 3 connected to the steel is open, so the air in the guide tube 3 can pass through the steel as much as possible, thereby making the drying effect of the inner wall of the steel better.

[0059] The implementation principle of the steel spray drying device in this application embodiment is as follows: the sprocket conveyor belt 2 transports the steel, the steel moves and pushes the mating plate 81 to move, thereby causing the sealing plate 7 to move upward to seal the conduit 3. As the steel continues to move, the steel drives the conduit 3 to move, and the movement of the conduit 3 causes the fan 4 to rotate. The fan 4 rotates and sends air from the frame 1 into the steel. At the same time, the conduit 3 gradually moves upward under the cooperation of the fixed rack 52 and the gear 54. The movement of the conduit 3 causes the end of the steel near the conduit 3 to rotate upward, and the liquid accumulated in the conduit 3 flows out of the conduit 3. While the conduit 3 moves towards the discharge port 12, it also moves away from the steel. When the steel leaves the conduit 3, the steel falls onto the sprocket conveyor belt 2. At the same time, the limit spring 82, the return spring 62 and the connecting spring 513 are all deformed, thereby resetting the conduit 3 and the sealing plate 7.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A steel material blowing drying device, comprising a frame (1) and a plurality of chain wheel conveyors (2) arranged in the frame (1), a plurality of protrusions (21) are fixedly connected on the chain of the chain wheel conveyor (2), characterized in that: One of the inner side walls of the frame body (1) is slidably connected with a guide pipe (3), the side of the guide pipe (3) close to the entrance of the frame body (1) is open, and the side of the guide pipe (3) close to the chain wheel conveying belt (2) is also open; At least two air supply fans (4) are installed on the side wall of the frame body (1) opposite to the guide pipe (3), the rotating axis of the air supply fan (4) is at an angle with the conveying direction of the chain wheel conveying belt (2), and the frame body (1) is provided with a transmission assembly (5) for transmitting the power generated when the guide pipe (3) moves to the air supply fan (4) so as to rotate the air supply fan (4); The frame body (1) is further provided with a driving assembly (6) for driving the guide pipe (3) to move in the direction perpendicular to the length of the chain wheel conveying belt (2); The transmission assembly (5) comprises a fixed rack (52) fixedly connected to the inner side wall of the frame body (1) close to the guide pipe (3), a limiting plate (55) fixedly connected to the side wall of the middle part of the frame body (1) close to the fixed rack (52), the length direction of the limiting plate (55) and the length direction of the fixed rack (52) are both along the length direction of the chain wheel conveying belt (2), a telescopic rod (51) fixedly connected to the rotating shaft of the air supply fan (4), a strip-shaped hole (551) formed in the limiting plate (55), the telescopic rod (51) inserted into the strip-shaped hole (551), one end of the telescopic rod (51) fixedly connected with a gear (54), the gear (54) located between the side wall of the limiting plate (55) and the frame body (1), and the gear (54) engaged with the fixed rack (52); The driving assembly (6) comprises a guide part (61) located at the side of the guide pipe (3) away from the chain wheel conveying belt (2), the guide part (61) fixedly connected with the frame body (1), the side wall of the guide part (61) close to the guide pipe (3) gradually inclined to the middle part of the frame body (1) from the discharge port (12) to the feeding port (11) of the frame body (1), and the guide pipe (3) in contact with the guide part (61); a reset spring (62) fixedly connected to the side wall of the limiting plate (55) at the position of the guide pipe (3) close to the discharge port (12) of the frame body (1).

2. The steel material blow-drying device according to claim 1, characterized by: The side wall of the frame body (1) corresponding to the fixed rack (52) is slidably connected with a driven rack (53), the driven rack (53) parallel to the fixed rack (52), the driven rack (53) engaged with the gear (54), and the driven rack (53) arranged along the length direction of the chain wheel conveying belt (2).

3. The steel material blowing drying device according to claim 1, characterized in that: The telescopic rod (51) comprises a support rod (512) fixedly connected to the end face of the gear (54) close to the guide pipe (3), the cross section of the support rod (512) is rectangular, a sleeve (511) fixedly connected to the guide pipe (3) corresponding to the support rod (512), the support rod (512) slidably inserted into the sleeve (511), a connecting spring (513) fixedly connected to the inner bottom wall of the sleeve (511), and the connecting spring (513) fixedly connected with the support rod (512).

4. A steel material blowing drying device according to any one of claims 1 to 3, characterized in that: The fixed rack (52) is inclined, and the end of the fixed rack (52) close to the discharge port (12) of the frame body (1) is higher than the end of the fixed rack (52) close to the feeding port (11) of the frame body (1).

5. The steel material blowing drying device according to claim 1, characterized in that: The end of the guide pipe (3) close to the feeding port (11) of the frame body (1) is slidingly connected with a blocking plate (7), and the guide pipe (3) is further provided with a control assembly (8) for controlling the movement of the blocking plate (7).

6. A steel material blowing drying device according to claim 5, characterized in that: The control assembly (8) comprises a matching plate (81) located in the guide pipe (3) and slidingly connected with the guide pipe (3), the matching plate (81) slides along the length direction of the chain wheel conveying belt (2), the inner side wall of the guide pipe (3) close to the discharge port (12) of the frame body (1) is fixedly connected with a limiting spring (82), the limiting spring (82) is fixedly connected with the matching plate (81), the matching plate (81) is fixedly connected with a pull rope (83), and the end of the pull rope (83) away from the matching plate (81) is fixedly connected with the blocking plate (7).

7. A steel material blowing drying device according to claim 6, characterized in that: The side wall of the blocking plate (7) away from the guide pipe (3) is fixedly connected with a counterweight (72).

8. A steel shot blasting and drying apparatus as claimed in any one of claims 6 or 7, wherein: The upper surface and the lower surface of the matching plate (81) are both fixedly connected with a T-shaped connecting block (811), the guide pipe (3) is provided with a connecting hole (32) corresponding to the connecting block (811), the length direction of the connecting hole (32) is arranged along the length direction of the chain wheel conveying belt (2), and each connecting block (811) is slidingly inserted into the corresponding connecting hole (32).

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