Heating furnace for reducing heating oxidation burning loss of rolled steel

Abstract

The utility model belongs to the field of steel rolling heating furnaces, and particularly relates to a heating furnace capable of reducing steel rolling heating oxidation burning loss, which comprises a heating furnace body, a support is arranged at the front end of the heating furnace body, and five groups of conveying rollers are rotatably connected onto the support. An adjusting mechanism is arranged at the bottom end of the support and comprises two sets of hydraulic ejector rods, the top ends of the hydraulic ejector rods are fixedly connected with a connecting frame, the top end of the connecting frame is fixedly connected with a long plate, four sets of fixing blocks are fixedly connected to the top end of the long plate, and rectangular grooves and U-shaped grooves are formed in the fixing blocks. The bottom end of the fixed block is in threaded connection with a bolt, the top end of the bolt abuts against the movable plate, three sets of supporting blocks are fixedly connected to the movable plate, three sets of semicircular blocks are fixedly connected to one side of the fixed block, the semicircular blocks and the supporting blocks make contact with the adjusting roller, and a plurality of sets of notches are formed in the top end of the support.

Description

Technical Field

[0001] The utility model relates to the field of steel rolling heating furnaces, in particular to a heating furnace capable of reducing oxidation and burning losses during heating of steel rolling. Background Art

[0002] The steel rolling heating furnace can heat the steel billet to the temperature required by the process, and then send it to the next process for rolling. During the heating process, the steel billet will inevitably be oxidized and burned, which will directly affect the yield rate.

[0003] The existing steel rolling heating furnace can specifically refer to the Chinese utility model patent with application number: CN202122853344.5. A steel rolling heating furnace relates to the technical field of heating furnaces, including a heating furnace body, a transmission frame is fixedly installed inside the heating furnace body, a chip collecting groove is opened at the bottom end of the heating furnace body, a baffle is movably installed on one side of the inside of the chip collecting groove, a telescopic rod is fixedly installed on one side of the baffle, a hydraulic cylinder is fixedly installed on one side of the telescopic rod, a placement groove is opened on one side of the bottom end of the chip collecting groove, a collection drawer is arranged inside the placement groove, sliders are fixedly installed on both sides of the collection drawer, and slide grooves are opened on the opposite sides of the groove wall of the placement groove, and the slide grooves are slidably connected with the sliders. The steel rolling heating furnace described in this application has a simple structure and is easy to use. It has a collection function for iron chips attached to the surface of steel, enhances connectivity, is convenient for cleaning iron chips residues inside the heating furnace, and tries to avoid residues piling inside the heating furnace, thereby enhancing the use effect.

[0004] Most of the existing technologies use methods such as adjusting the furnace atmosphere or high-temperature anti-oxidation coatings to reduce the oxidation burning of steel billets in steel rolling heating furnaces. This not only requires additional equipment, but also has a cumbersome operation process and high cost. Therefore, in order to solve the above problems, a heating furnace is proposed to reduce the oxidation burning of steel rolling heating. Utility Model Content

[0005] In order to make up for the shortcomings of the existing technology, most of the existing technologies adopt the method of adjusting the atmosphere in the furnace or high-temperature anti-oxidation coating to reduce the oxidation burning of the steel billet in the steel rolling heating furnace. This not only requires additional equipment, but also has cumbersome operation processes and high costs. The utility model proposes a heating furnace for reducing oxidation burning during steel rolling heating.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a heating furnace for reducing heating oxidation and burning loss of steel rolling described in the utility model comprises a heating furnace body, a bracket is arranged on the front end of the heating furnace body, and five groups of conveying rollers are rotatably connected to the bracket; an adjusting mechanism is arranged on the bottom end of the bracket, and the adjusting mechanism comprises two groups of hydraulic push rods, the top ends of the hydraulic push rods are fixedly connected to the connecting frame, the top ends of the connecting frame are fixedly connected to the long plate, four groups of fixed blocks are fixedly connected to the top end of the long plate, a rectangular groove and a U-shaped groove are provided inside the fixed block, a bolt is threadedly connected to the bottom end of the fixed block, the top end of the bolt abuts against the movable plate, three groups of supporting blocks are fixedly connected to the movable plate, three groups of semicircular blocks are fixedly connected to one side of the fixed block, the semicircular blocks and the supporting blocks are in contact with the adjusting rollers, and multiple groups of notches are provided on the top end of the bracket.

[0007] Preferably, two groups of springs are fixedly connected to the bottom end of the movable plate, and the bottom ends of the springs are fixedly connected to the bottom end of the inner wall of the rectangular groove.

[0008] Preferably, sliders are fixedly connected to both left and right sides of the movable plate, and the sliders are slidably connected to the inside of the slide groove, and the slide groove is opened on the left and right sides of the inner wall of the rectangular groove.

[0009] Preferably, the long plate is fixedly connected to a connecting plate, a plurality of groups of circular holes are provided on the connecting plate, and the connecting plate does not contact the bottom end of the conveying roller.

[0010] Preferably, pulleys are fixedly connected to the bottom ends of the left and right sides of the long board, and the pulleys are slidably connected to the sliding grooves, and the sliding grooves are provided on the bracket.

[0011] Preferably, three groups of grooves are formed on the top of the long board, and rubber gaskets are fixedly connected inside the grooves.

[0012] The utility model is beneficial in that:

[0013] 1. The utility model adopts the structural design of the adjustment mechanism, and the hydraulic push rod pushes the long plate upward until the top of the adjustment roller and the conveying roller are on the same horizontal plane, so as to change the distance between the rollers, thereby realizing the function of adjusting the transportation speed of the steel billet on the conveying roller and shortening the time of the steel billet in the furnace, and solving the problem that most of the existing technologies use the method of adjusting the furnace atmosphere or high-temperature anti-oxidation coating to reduce the oxidation and burning loss of the steel billet in the steel rolling heating furnace, which not only requires additional equipment, but also has a cumbersome operation process and high cost;

[0014] 2. The utility model adopts the structural design of two sets of springs, and the springs can provide certain support for the movable plate, so as to prevent the movable plate inside the rectangular groove from falling directly when the bolts are unscrewed, and colliding with the inner wall of the rectangular groove to cause damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the bottom end of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the fixing block of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the slider of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the long board of the utility model.

[0021] In the figure: 1. Heating furnace body; 20. Bracket; 21. Conveying roller; 22. Hydraulic push rod; 23. Connecting frame; 24. Long plate; 25. Bolt; 26. Spring; 27. Rectangular groove; 28. Moving plate; 29. ​​Semicircular block; 30. Support block; 31. Adjusting roller; 32. Fixed block; 33. Slide groove; 34. Sliding block; 35. U-shaped groove; 36. Groove; 37. Rubber gasket; 38. Pulley; 39. Sliding groove; 40. Connecting plate; 41. Round hole; 42. Notch. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 - Figure 5As shown, a heating furnace for reducing oxidation and burning loss during steel rolling heating comprises a heating furnace body 1, a bracket 20 is arranged on the front end of the heating furnace body 1, and five groups of conveying rollers 21 are rotatably connected to the bracket 20; an adjustment mechanism is arranged on the bottom end of the bracket 20, and the adjustment mechanism comprises two groups of hydraulic push rods 22, the top ends of the hydraulic push rods 22 are fixedly connected to the connecting frame 23, the top ends of the connecting frame 23 and the long plate 24 are fixed together by welding, four groups of fixing blocks 32 are welded and fixed to the top ends of the long plate 24, the long plate 24 is designed in a long rectangular shape, a rectangular groove 27 and a U-shaped groove 35 are opened inside the fixing block 32, the fixing block 32 is designed in a rectangular shape, and the rectangular groove 27 is connected to the U-shaped groove 35, and the U-shaped groove The design of 35 is so that the adjusting roller 31 can rotate smoothly in the U-shaped groove 35. The bottom end of the fixed block 32 is threadedly connected with a bolt 25. The top of the bolt 25 abuts against the movable plate 28. Three groups of support blocks 30 are welded and fixed on the movable plate 28. The support blocks 30 are designed in an arc shape so as to contact with the bottom end of the adjusting roller 31. Three groups of semicircular blocks 29 are fixedly connected on one side of the fixed block 32. The semicircular blocks 29 can fix one side of the adjusting roller 31 so that the adjusting roller 31 can be more stable when rotating. The semicircular blocks 29 and the support blocks 30 are in contact with the adjusting roller 31. A plurality of notches 42 are provided on the top of the bracket 20. The length of the notch 42 is consistent with that of the fixed block 32.

[0024] During operation, most of the prior art uses methods such as adjusting the atmosphere in the furnace or applying high-temperature anti-oxidation coatings to reduce oxidation and burning of the steel billet in the steel rolling heating furnace, which not only requires additional equipment, but also has a cumbersome operation process and high cost. Through the structural design of the adjustment mechanism, the hydraulic push rod 22 pushes the long plate 24 upward until the top of the adjusting roller 31 and the conveying roller 21 are on the same horizontal plane, so that the distance between the rollers can be changed, thereby realizing the function of adjusting the transportation speed of the steel billet on the conveying roller 21 and shortening the time of the steel billet in the furnace. When the heating time of the steel billet in the furnace is to be adjusted, first, the long plate 24 is pushed upward by two groups of hydraulic push rods 22 until the adjusting roller 31 inside the fixed block 32 and the top of the conveying roller 21 are on the same horizontal plane. The three groups of adjusting rollers 31 reduce the gap between two adjacent groups of conveying rollers 21, so that when the steel billet is transported between the two groups of conveying rollers 21, the adjusting roller 3 1 can continue to transport the steel billet, thereby speeding up the transportation speed of the steel billet and then reducing the time of the steel billet in the furnace and reducing oxidation and burning. Among them, the four groups of fixed blocks 32 are all arranged between the five groups of conveying rollers 21. The adjusting roller 31 rotates between the semicircular block 29 and the support block 30, and the semicircular block 29 and the support block 30 are coated with lubricating oil so as to reduce the resistance of the adjusting roller 31 when rotating. The support blocks 30 are all fixed on the moving plate 28. By rotating the bolt 25, the moving plate 28 is in contact with the bottom end of the adjusting roller 31 and the position of the adjusting roller 31 is fixed. The transportation speed of the steel billet on the conveying roller 21 can be further fine-tuned by reducing the number of adjusting rollers 31. The bolt 25 penetrates the long plate 24 and is threadedly connected in the rectangular groove 27. Through the connecting frame 23, the force from the hydraulic push rod 22 can be more evenly transmitted to the long plate 24, so that the long plate 24 can move upward more smoothly.

[0025] Furthermore, two sets of springs 26 are fixedly connected to the bottom end of the movable plate 28. The two sets of springs 26 are located on both sides of the bolt 25 and can provide support for the movable plate 28. The bottom ends of the springs 26 are fixedly connected to the bottom end of the inner wall of the rectangular groove 27.

[0026] During operation, through the structural design of the two sets of springs 26, the springs 26 can provide certain support for the movable plate 28, so as to prevent the movable plate 28 inside the rectangular groove 27 from falling directly when the bolt 25 is screwed off, and from colliding with the inner wall of the rectangular groove 27 and causing damage.

[0027] Furthermore, sliders 34 are welded and fixed on both the left and right sides of the movable plate 28. The sliders 34 are rectangular in design. The sliders 34 are slidably connected inside the slide grooves 33. The slide grooves 33 are provided on the left and right sides of the inner wall of the rectangular groove 27. The slide grooves 33 are long rectangular in design and have the same size as the sliders 34, so that the sliders 34 will not shake when sliding inside the slide grooves 33.

[0028] During operation, when the bolt 25 is rotated to push the movable plate 28 to contact and fix with the bottom end of the adjusting roller 31, the sliders 34 on the left and right sides of the movable plate 28 will also slide in the slide groove 33, and through the contact between the sliders 34 and the inner wall of the slide groove 33, the movable plate 28 will not tilt when moving upward, and at the same time limit the horizontal movement of the movable plate 28.

[0029] Furthermore, the long plate 24 and the connecting plate 40 are fixed together by welding, and a plurality of groups of circular holes 41 are opened on the connecting plate 40, and the circular holes 41 are evenly distributed on the connecting plate 40, and the connecting plate 40 does not contact the bottom end of the conveying roller 21;

[0030] During operation, a connecting plate 40 is fixed between the two groups of long plates 24, and the two groups of long plates 24 are connected together by the connecting plate 40 so that the long plates 24 can move smoothly. A plurality of groups of round holes 41 are opened on the connecting plate 40 to clean foreign objects dropped when conveying the steel billets.

[0031] Furthermore, pulleys 38 are welded and fixed on the bottom ends of the left and right sides of the long board 24, and the pulleys 38 are slidably connected to the sliding grooves 39. The sliding grooves 39 are designed to be long rectangles. The size of the sliding grooves 39 is adapted to the pulleys 38 so as to facilitate the movement of the pulleys 38 inside the sliding grooves 39. The sliding grooves 39 are provided on the bracket 20;

[0032] During operation, the pulley 38 slides in the sliding groove 39, so that when the long board 24 moves upward, the left and right sides thereof can move more smoothly.

[0033] Furthermore, three groups of grooves 36 are formed on the top of the long plate 24. The grooves 36 are rectangular in design. Rubber gaskets 37 are glued and fixed inside the grooves 36. The size of the rubber gaskets 37 is the same as that of the grooves 36 so as to be fixed in the grooves 36.

[0034] During operation, the rubber gasket 37 is fixed inside the groove 36 , and the rubber gasket 37 is used for buffering between the top end of the long board 24 and the bracket 20 .

[0035] Working principle: In the prior art, most of the methods of adjusting the atmosphere in the furnace or high-temperature anti-oxidation coating are used to reduce the oxidation and burning loss of the steel billet in the steel rolling heating furnace. This not only requires the addition of equipment, but also the operation process is cumbersome and the cost is high. Through the structural design of the adjustment mechanism, the hydraulic push rod 22 pushes the long plate 24 upward until the top of the adjusting roller 31 and the conveying roller 21 are on the same horizontal plane, so that the distance between the rollers can be changed, thereby realizing the function of adjusting the transportation speed of the steel billet on the conveying roller 21 and shortening the time of the steel billet in the furnace. When the heating time of the steel billet in the furnace is to be adjusted, first, the long plate 24 is pushed upward by two groups of hydraulic push rods 22 until the adjusting roller 31 inside the fixed block 32 and the top of the conveying roller 21 are on the same horizontal plane. The three groups of adjusting rollers 31 reduce the gap between the two adjacent groups of conveying rollers 21, so that when the steel billet is transported between the two groups of conveying rollers 21, the adjusting roller 3 1 can continue to transport the steel billet, thereby speeding up the transportation speed of the steel billet and then reducing the time of the steel billet in the furnace and reducing oxidation and burning. Among them, the four groups of fixed blocks 32 are all arranged between the five groups of conveying rollers 21. The adjusting roller 31 rotates between the semicircular block 29 and the support block 30, and the semicircular block 29 and the support block 30 are coated with lubricating oil so as to reduce the resistance of the adjusting roller 31 when rotating. The support blocks 30 are all fixed on the moving plate 28. By rotating the bolt 25, the moving plate 28 is in contact with the bottom end of the adjusting roller 31 and the position of the adjusting roller 31 is fixed. The transportation speed of the steel billet on the conveying roller 21 can be further fine-tuned by reducing the number of adjusting rollers 31. The bolt 25 penetrates the long plate 24 and is threadedly connected in the rectangular groove 27. Through the connecting frame 23, the force from the hydraulic push rod 22 can be more evenly transmitted to the long plate 24, so that the long plate 24 can move upward more smoothly.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A heating furnace for reducing oxidation and burning loss during steel rolling, comprising a heating furnace body (1), a bracket (20) being arranged at the front end of the heating furnace body (1), and five groups of conveying rollers (21) being rotatably connected to the bracket (20); characterized in that: The bottom end of the bracket (20) is provided with an adjustment mechanism, which comprises two groups of hydraulic push rods (22), the top ends of the hydraulic push rods (22) are fixedly connected to the connecting frame (23), the top end of the connecting frame (23) is fixedly connected to the long plate (24), the top end of the long plate (24) is fixedly connected with four groups of fixed blocks (32), the inside of the fixed block (32) is provided with a rectangular groove (27) and a U-shaped groove (35), the bottom end of the fixed block (32) is threadedly connected with a bolt (25), the top end of the bolt (25) is in contact with the movable plate (28), the movable plate (28) is fixedly connected with three groups of support blocks (30), one side of the fixed block (32) is fixedly connected with three groups of semicircular blocks (29), the semicircular blocks (29) and the support blocks (30) are in contact with the adjustment roller (31), and the top end of the bracket (20) is provided with a plurality of groups of notches (42).

2. A heating furnace for reducing oxidation and burning loss during steel rolling heating according to claim 1, characterized in that: Two groups of springs (26) are fixedly connected to the bottom end of the movable plate (28), and the bottom ends of the springs (26) are fixedly connected to the bottom end of the inner wall of the rectangular groove (27).

3. A heating furnace for reducing oxidation and burning loss during steel rolling heating according to claim 2, characterized in that: Slide blocks (34) are fixedly connected on both the left and right sides of the movable plate (28), and the slide blocks (34) are slidably connected inside the slide groove (33). The slide groove (33) is only opened on the left and right sides of the inner wall of the rectangular groove (27).

4. A heating furnace for reducing oxidation and burning loss during steel rolling heating according to claim 3, characterized in that: The long plate (24) is fixedly connected to the connecting plate (40), a plurality of groups of circular holes (41) are provided on the connecting plate (40), and the connecting plate (40) does not contact the bottom end of the conveying roller (21).

5. A heating furnace for reducing oxidation and burning loss during steel rolling heating according to claim 4, characterized in that: The bottom ends of the left and right sides of the long board (24) are fixedly connected with pulleys (38), and the pulleys (38) are slidably connected to the sliding grooves (39), and the sliding grooves (39) are arranged on the bracket (20).

6. A heating furnace for reducing heating oxidation and burning loss of steel rolling according to claim 5, characterized in that: Three groups of grooves (36) are provided on the top of the long plate (24), and rubber gaskets (37) are fixedly connected inside the grooves (36).

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