Blast furnace air supply device convenient to disassemble and assemble

Abstract

The utility model relates to the technical field of blast furnace air supply, and discloses a blast furnace air supply device convenient to disassemble and assemble, which comprises a bottom plate, a limiting rod is fixedly mounted above the bottom plate, a movable frame is mounted above the limiting rod in a penetrating manner, a bull eye bearing is fixedly mounted below the movable frame, and the bull eye bearing is fixedly mounted above the bottom plate. A connecting shaft is installed on the front side of the movable frame in a penetrating mode, a rubber wheel is fixedly installed in the center of the connecting shaft, a transmission ring is fixedly installed on the outer side of the connecting shaft, a transmission belt is installed in the center of the transmission ring in an embedded mode, and the driving motor can drive the connecting shaft to rotate through the transmission ring, the transmission belt and the driving ring when started. The connecting shaft drives the rubber wheel to rotate, so that the movable frame moves linearly under the limitation of the limiting rod, the belly pipe is prevented from being inserted into the center of the tuyere middle sleeve and the tuyere small sleeve, the position of the belly pipe in the moving process can be limited in the mode, and the belly pipe is prevented from damaging water cooling structures of the tuyere middle sleeve and the tuyere small sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace air supply, in particular to a blast furnace air supply device which is easy to disassemble and assemble. Background Art

[0002] The blast furnace air supply device includes the middle section of the corrugated branch pipe, elbows, straight blowing pipes, large tuyere sleeves, medium tuyere sleeves and small tuyere sleeves. During daily operation, the small tuyere sleeves, elbows and straight blowing pipes are mainly damaged and can only be replaced by stopping the air flow. The traditional method of replacing the straight blowing pipe is mainly to slowly deliver it to the position with a manual hoist, and the hanging hoist needs to enter between the hot blast surrounding pipe and the furnace shell.

[0003] The existing Chinese utility model patent with reference announcement number CN208104450U discloses a long-life blast furnace air supply device, including a straight blowing pipe, an elbow, a short joint, and an expansion joint, wherein the expansion joint is installed at the upper end of the short joint, the short joint is installed at the upper connecting end of the elbow, the straight blowing pipe is installed in the blast furnace tuyere sleeve, the front end of the straight blowing pipe is connected to the tuyere small sleeve of the tuyere sleeve, the rear end of the straight blowing pipe is butt-jointed with the lower connecting end of the elbow, the pipe wall thickness at the upper connecting end of the elbow is greater than the thickness of the elbow body; a spherical connector is provided at the lower connecting end of the elbow, a refractory material layer is provided in the spherical connector; the spherical connector is connected to the elbow flange; the straight blowing pipe is a tapered pipe, and the refractory material layer of the straight blowing pipe gradually increases in thickness from the front end to the rear end; the rear end of the straight blowing pipe is an inward concave end face adapted to the spherical connector, and the utility model thickens the component structure at the corresponding position according to the internal action degree analysis of the hot air, so that the heat resistance and deformation resistance of the components are improved as a whole, the service life of the components is extended, production safety is maintained, and frequent replacement of components is avoided.

[0004] When the direct blowing pipe of the existing blast furnace air supply structure is damaged, it takes a long time to replace it due to the weight of the direct blowing pipe, which directly affects the blast furnace production time and the blast furnace molten iron output. At the same time, the position of the direct blowing pipe cannot be restricted during the replacement process, which may cause the direct blowing pipe to damage the cooling water pipe. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a blast furnace air supply device that is easy to disassemble and assemble, has the advantages of reducing the time required for replacing a direct blowing pipe and being able to limit the position of the direct blowing pipe, thereby solving the above technical problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blast furnace air supply device that is easy to disassemble and assemble, comprising: a bottom plate, a limit rod is fixedly installed on the top of the bottom plate, a movable frame is inserted and installed on the top of the limit rod, a bull's eye bearing is fixedly installed on the bottom of the movable frame, a connecting shaft is inserted and installed on the front side of the movable frame, a rubber wheel is fixedly installed on the center of the connecting shaft, a transmission ring is fixedly installed on the outside of the connecting shaft, a transmission belt is embedded and installed in the center of the transmission ring, a driving ring is embedded and installed above the transmission belt, a driving motor is fixedly installed on the top of the movable frame, and a A supporting piston, a transfer block is fixedly installed above the supporting piston, an adjusting piston is inserted through the center of the transfer block, a connecting plate is fixedly installed on the right end of the adjusting piston, a supporting ring and a limiting ring are fixedly installed on the right side of the connecting plate, a straight blowing pipe is embedded and installed above the supporting ring, a bent pipe is fixedly installed at the front end of the straight blowing pipe, a supporting frame is fixedly installed below the bent pipe, a supporting plate is fixedly installed below the supporting frame, a connecting piston is fixedly installed below the support plate, a bolt is inserted through the front end of the bent pipe, a nut is movably installed at the end of the bolt; the bottom plate can limit the position of the limiting rod.

[0009] As the preferred technical solution of the utility model, the limit rod is installed symmetrically on the left and right sides of the base plate with the center of the base plate as the reference, and a slide groove structure engaged with the bull's eye bearing is provided above the base plate, and a sliding connection is formed between the movable frame and the limit rod; the limit rod can limit the movement direction of the movable frame.

[0010] As an optimal technical solution of the utility model, the bull's eye bearing is symmetrically installed on the left and right sides of the front and rear ends of the bottom of the movable frame with the center of the movable frame as the reference, and the bull's eye bearing is engaged with the slide groove structure above the bottom plate, and a rotational connection is formed between the connecting shaft and the movable frame; the bull's eye bearing can facilitate the movement of the movable frame.

[0011] As the preferred technical solution of the utility model, the transmission ring is installed on the left and right sides of the connecting shaft symmetrically with the center of the rubber wheel as the reference, the driving motor is installed on the top of the movable frame in a mirror-symmetrical manner with the center of the movable frame as the reference, and the transmission ring is fixed to the outside of the rotating shaft of the driving motor by means of interlaced installation; the driving motor can drive the connecting shaft to rotate.

[0012] As the preferred technical solution of the utility model, the supporting piston is symmetrically installed on the top of the movable frame with the center of the movable frame as the reference, the adapter block is symmetrically installed on the top of the supporting piston on both sides of the movable frame, and the adjusting piston is mirror-symmetrically installed on the center of the adapter blocks on the left and right sides of the movable frame; the supporting piston can adjust the height of the adapter block.

[0013] As an optimal technical solution of the utility model, the front end of the connecting plate is provided with an opening structure matching the bolt, the support ring is installed on the rear side of the connecting plate, the limiting ring is fixedly installed on the front side of the connecting plate, the front end of the straight blowing pipe and the rear end of the bent pipe are provided with a flange structure, and the inner diameter of the limiting ring matches the outer diameter of the flange structure of the straight blowing pipe; the connecting plate can facilitate the adjustment of the piston to drive the support ring and the limiting ring to move.

[0014] As an optimal technical solution of the utility model, the bottom end of the connecting piston is fixedly connected to the movable frame, the bolts are fixedly installed in a ring shape at equal angles on the front side of the flange structure at the front end of the direct blowing pipe with the center of the direct blowing pipe as a reference, and the bolts on the left and right sides of the direct blowing pipe penetrate the opening structure at the front end of the connecting plate; the direct blowing pipe can facilitate air to enter the blast furnace.

[0015] Compared with the prior art, the utility model provides a blast furnace air supply device that is easy to disassemble and assemble, and has the following beneficial effects:

[0016] 1. The utility model sets a limit rod, which is symmetrically installed on the left and right sides of the bottom plate with the center of the bottom plate as the reference, and a slide groove structure engaged with the bull's eye bearing is arranged above the bottom plate. A sliding connection is formed between the movable frame and the limit rod, and the bull's eye bearing is symmetrically installed on the left and right sides of the front and rear ends of the bottom of the movable frame with the center of the movable frame as the reference, and the bull's eye bearing is engaged with the slide groove structure above the bottom plate. When the driving motor is started, it can drive the connecting shaft to rotate through the transmission ring, the transmission belt, and the driving ring, so that the connecting shaft drives the rubber wheel to rotate, so that the movable frame moves in a straight line under the restriction of the limit rod, and the straight blowing pipe is prevented from being inserted into the center of the middle sleeve and the small sleeve of the tuyere. This method can limit the position of the straight blowing pipe during the movement, and prevent the straight blowing pipe from damaging the water-cooling structure of the middle sleeve and the small sleeve of the tuyere.

[0017] 2. The utility model provides a connecting plate. When replacing the straight blow pipe, it is first necessary to adjust the height of the straight blow pipe and the elbow by the supporting piston and the connecting piston, then remove all the bolts, and then adjust the distance between the supporting ring and the limiting ring by the adjusting piston. After that, after replacing the straight blow pipe by the lifting equipment, the supporting ring and the limiting ring are positioned below the straight blow pipe to support the straight blow pipe by adjusting the piston, and then the positions of the straight blow pipe, the elbow and the connecting plate are limited by the bolts on the left and right sides. After that, the straight blow pipe and the elbow can be connected by the bolts and nuts. At the same time, the lifting equipment can be replaced by the supporting ring to support the straight blow pipe. The operation of canceling the connection between the lifting equipment and the straight blow pipe can be carried out simultaneously with the operation of connecting the straight blow pipe and the elbow to shorten the replacement time. At the same time, since the position of the movable frame is limited by the limiting rod, the straight blow pipe can be directly driven to the specified position by the movable frame after adjusting the height of the straight blow pipe, eliminating the operation of adjusting the position of the straight blow pipe, so as to improve the efficiency of the replacement and maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 This is a schematic diagram of the connection structure between the bottom plate and the movable frame of the utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the drive motor and the connecting shaft of the utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure between the direct blowing pipe and the support ring of the utility model;

[0022] Among them: 1. Base plate; 11. Limit rod; 12. Movable frame; 13. Bull's eye bearing; 14. Connecting shaft; 15. Rubber wheel; 16. Transmission ring; 17. Transmission belt; 18. Drive ring; 19. Drive motor; 2. Support piston; 21. Adapter block; 22. Adjusting piston; 23. Connecting plate; 24. Support ring; 25. Limit ring; 26. Straight blowing pipe; 27. Bend pipe; 28. Support frame; 29. ​​Support plate; 210. Connecting piston; 211. Bolt; 212. Nut. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0024] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figure 1 - Figure 4 In the present embodiment, a blast furnace air supply device that is easy to disassemble and assemble includes: a bottom plate 1, a limit rod 11 is fixedly installed on the top of the bottom plate 1, a movable frame 12 is inserted and installed above the limit rod 11, a bull's eye bearing 13 is fixedly installed below the movable frame 12, a connecting shaft 14 is inserted and installed on the front side of the movable frame 12, a rubber wheel 15 is fixedly installed at the center of the connecting shaft 14, a transmission ring 16 is fixedly installed on the outer side of the connecting shaft 14, a transmission belt 17 is embedded and installed at the center of the transmission ring 16, a drive ring 18 is embedded and installed above the transmission belt 17, and a drive motor 19 is fixedly installed above the movable frame 12.

[0027] The limiting rod 11 is symmetrically installed on the left and right sides of the bottom plate 1 with the center of the bottom plate 1 as the reference. A sliding groove structure engaged with the bull's eye bearing 13 is provided above the bottom plate 1, and a sliding connection is formed between the movable frame 12 and the limiting rod 11.

[0028] The bull's eye bearing 13 is symmetrically installed on the left and right sides of the front and rear ends of the bottom of the movable frame 12 with the center of the movable frame 12 as the reference. The bull's eye bearing 13 is engaged with the sliding groove structure above the bottom plate 1, and the connecting shaft 14 and the movable frame 12 are rotatably connected.

[0029] The transmission ring 16 is installed symmetrically on the left and right sides of the connecting shaft 14 with the center of the rubber wheel 15 as the reference, and the drive motor 19 is installed above the movable frame 12 with mirror symmetry with the center of the movable frame 12 as the reference. The transmission ring 16 is fixed to the outside of the rotating shaft of the drive motor 19 by means of interlaced installation.

[0030] Specifically, the base plate 1 can limit the position of the limit rod 11, the limit rod 11 can limit the movement direction of the movable frame 12, the movable frame 12 can support the supporting piston 2, the bull's eye bearing 13 can facilitate the movement of the movable frame 12, the connecting shaft 14 can drive the rubber wheel 15 to rotate, the rubber wheel 15 can drive the movable frame 12 to move, and the transmission ring 16, the transmission belt 17, and the drive ring 18 can facilitate the driving motor 19 to drive the connecting shaft 14 to rotate.

[0031] A supporting piston 2 is fixedly installed above the movable frame 12, a transfer block 21 is fixedly installed above the supporting piston 2, an adjusting piston 22 is inserted through the center of the transfer block 21, a connecting plate 23 is fixedly installed on the right end of the adjusting piston 22, a supporting ring 24 and a limiting ring 25 are fixedly installed on the right side of the connecting plate 23, a straight blowing pipe 26 is embedded and installed above the support ring 24, a bent pipe 27 is fixedly installed at the front end of the straight blowing pipe 26, a supporting frame 28 is fixedly installed below the bent pipe 27, a supporting plate 29 is fixedly installed below the supporting frame 28, a connecting piston 210 is fixedly installed below the support plate 29, a bolt 211 is inserted through the front end of the bent pipe 27, and a nut 212 is movably installed at the end of the bolt 211.

[0032] The supporting piston 2 is symmetrically installed on the upper part of the movable frame 12 with the center of the movable frame 12 as the reference. The adapter blocks 21 are symmetrically installed on the top of the supporting piston 2 on both sides of the movable frame 12. The adjusting piston 22 is mirror-symmetrically installed on the center of the adapter blocks 21 on the left and right sides of the movable frame 12.

[0033] The front end of the connecting plate 23 is provided with an opening structure matching the bolt 211, the support ring 24 is installed on the rear side of the connecting plate 23, the limiting ring 25 is fixedly installed on the front side of the connecting plate 23, the front end of the straight blowing pipe 26 and the rear end of the bent pipe 27 are provided with a flange structure, and the inner diameter of the limiting ring 25 matches the outer diameter of the flange structure of the straight blowing pipe 26.

[0034] The bottom end of the connecting piston 210 is fixedly connected to the movable frame 12, and the bolts 211 are fixedly installed in a ring shape at an equal angle to the center of the straight blowing pipe 26 on the front side of the flange structure at the front end of the straight blowing pipe 26. The bolts 211 on the left and right sides of the straight blowing pipe 26 penetrate the opening structure at the front end of the connecting plate 23.

[0035] Specifically, the support piston 2 can adjust the height of the adapter block 21, the adapter block 21 can limit the position of the adjusting piston 22, the adjusting piston 22 can adjust the position of the connecting plate 23, the connecting plate 23 can facilitate the adjusting piston 22 to drive the support ring 24 and the limit ring 25 to move, the support ring 24 can support the straight blowing pipe 26, the limit ring 25 can support the connection between the straight blowing pipe 26 and the bent pipe 27, the straight blowing pipe 26 can facilitate air to enter the blast furnace, the bent pipe 27 can facilitate air to enter the straight blowing pipe 26, the support frame 28 can support the bent pipe 27, the support plate 29 can support the support frame 28, the connecting piston 210 can facilitate the adjustment of the height of the support plate 29, the bolts 211 and the nuts 212 can facilitate the connection between the straight blowing pipe 26 and the bent pipe 27, and limit the relative position between the connecting plate 23 and the straight blowing pipe 26 and the bent pipe 27.

[0036] When in use, the limit rod 11 is symmetrically installed on the left and right sides of the bottom plate 1 with the center of the bottom plate 1 as the reference, and a slide groove structure engaged with the bull's eye bearing 13 is arranged above the bottom plate 1. The movable frame 12 and the limit rod 11 are slidably connected. The bull's eye bearing 13 is symmetrically installed on the left and right sides of the front and rear ends of the bottom of the movable frame 12 with the center of the movable frame 12 as the reference, and the bull's eye bearing 13 is engaged with the slide groove structure above the bottom plate 1. When the drive motor 19 is started, it can pass through the transmission ring 16 and the transmission belt 17 , the driving ring 18 drives the connecting shaft 14 to rotate, so that the connecting shaft 14 drives the rubber wheel 15 to rotate, so that the movable frame 12 moves in a straight line under the restriction of the limit rod 11, and prevents the straight blowing pipe 26 from being inserted into the center of the tuyere middle sleeve and the tuyere small sleeve. This method can limit the position of the straight blowing pipe 26 during the movement process, and prevent the straight blowing pipe 26 from damaging the water cooling structure of the tuyere middle sleeve and the tuyere small sleeve. When replacing the straight blowing pipe 26, it is first necessary to adjust the straight blowing pipe 26 and the bent pipe 2 through the support piston 2 and the connecting piston 210. 7, then remove all the bolts 211, and then adjust the distance between the support ring 24 and the limit ring 25 by adjusting the piston 22, and then replace the straight blow pipe 26 by the lifting equipment, and then adjust the piston 22 to make the support ring 24 and the limit ring 25 located below the straight blow pipe 26 to support the straight blow pipe 26, and then limit the position of the straight blow pipe 26, the elbow 27 and the connecting plate 23 by the bolts 211 on the left and right sides, and then the straight blow pipe 26 and the elbow 27 can be connected by the bolts 211 and the nuts 212. 27, and at the same time, the support ring 24 can replace the lifting equipment to support the straight blowing pipe 26. The operation of canceling the connection between the lifting equipment and the straight blowing pipe 26 can be carried out simultaneously with the operation of connecting the straight blowing pipe 26 and the bent pipe 27 to shorten the replacement time. At the same time, since the position of the movable frame 12 is limited by the limit rod 11, after adjusting the height of the straight blowing pipe 26, the straight blowing pipe 26 can be directly driven to the specified position through the movable frame 12, eliminating the operation of adjusting the position of the straight blowing pipe 26, so as to improve the efficiency of replacement and maintenance operations.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blast furnace air supply device that is easy to disassemble and assemble, characterized in that: include: A bottom plate (1), a limit rod (11) is fixedly installed above the bottom plate (1), a movable frame (12) is inserted and installed above the limit rod (11), a bull's eye bearing (13) is fixedly installed below the movable frame (12), a connecting shaft (14) is inserted and installed on the front side of the movable frame (12), a rubber wheel (15) is fixedly installed at the center of the connecting shaft (14), a transmission ring (16) is fixedly installed on the outer side of the connecting shaft (14), a transmission belt (17) is embedded and installed at the center of the transmission ring (16), a driving ring (18) is embedded and installed above the transmission belt (17), a driving motor (19) is fixedly installed above the movable frame (12), a supporting piston (2) is fixedly installed above the movable frame (12), and a support piston (2) is fixedly installed above the supporting piston (2). An adapter block (21) is installed, an adjusting piston (22) is inserted and installed at the center of the adapter block (21), a connecting plate (23) is fixedly installed at the right end of the adjusting piston (22), a supporting ring (24) and a limiting ring (25) are fixedly installed on the right side of the connecting plate (23), a straight blowing pipe (26) is embedded and installed above the supporting ring (24), a bent pipe (27) is fixedly installed at the front end of the straight blowing pipe (26), a supporting frame (28) is fixedly installed below the bent pipe (27), a supporting plate (29) is fixedly installed below the supporting frame (28), a connecting piston (210) is fixedly installed below the supporting plate (29), a bolt (211) is inserted and installed at the front end of the bent pipe (27), and a nut (212) is movably installed at the end of the bolt (211).

2. The blast furnace air supply device that is easy to assemble and disassemble according to claim 1 is characterized in that: The limiting rod (11) is symmetrically installed on the left and right sides of the bottom plate (1) with the center of the bottom plate (1) as the reference, and a sliding groove structure engaged with the bull's eye bearing (13) is provided above the bottom plate (1), and a sliding connection is formed between the movable frame (12) and the limiting rod (11).

3. The blast furnace air supply device that is easy to assemble and disassemble according to claim 1 is characterized in that: The bull's eye bearing (13) is symmetrically installed on the left and right sides of the front and rear ends of the bottom of the movable frame (12) with the center of the movable frame (12) as the reference, and the bull's eye bearing (13) is engaged with the sliding groove structure above the bottom plate (1), and the connecting shaft (14) and the movable frame (12) are rotatably connected.

4. The blast furnace air supply device that is easy to assemble and disassemble according to claim 1 is characterized in that: The transmission ring (16) is symmetrically installed on the left and right sides of the connecting shaft (14) with the center of the rubber wheel (15) as the reference, and the driving motor (19) is mirror-symmetrically installed on the top of the movable frame (12) with the center of the movable frame (12) as the reference, and the transmission ring (16) is fixed to the outer side of the rotating shaft of the driving motor (19) by means of insertion installation.

5. The blast furnace air supply device that is easy to assemble and disassemble according to claim 1 is characterized in that: The supporting piston (2) is symmetrically mounted above the movable frame (12) with the center of the movable frame (12) as a reference. The adapter blocks (21) are symmetrically mounted at the tops of the supporting pistons (2) on both sides of the movable frame (12). The regulating piston (22) is mirror-symmetrically mounted at the centers of the adapter blocks (21) on both sides of the movable frame (12).

6. The blast furnace air supply device that is easy to assemble and disassemble according to claim 1 is characterized in that: The front end of the connecting plate (23) is provided with an opening structure matching the bolt (211), the supporting ring (24) is installed on the rear side of the connecting plate (23), the limiting ring (25) is fixedly installed on the front side of the connecting plate (23), the front end of the straight blowing pipe (26) and the rear end of the bent pipe (27) are provided with a flange structure, and the inner diameter of the limiting ring (25) matches the outer diameter of the flange structure of the straight blowing pipe (26).

7. The blast furnace air supply device that is easy to assemble and disassemble according to claim 1 is characterized in that: The bottom end of the connecting piston (210) is fixedly connected to the movable frame (12), and the bolts (211) are fixedly installed in a ring shape at the front side of the flange structure at the front end of the direct blowing pipe (26) with the center of the direct blowing pipe (26) as a reference at equal angles, and the bolts (211) on the left and right sides of the direct blowing pipe (26) penetrate the opening structure at the front end of the connecting plate (23).

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