A blower for blast furnace ironmaking

Abstract

This utility model discloses a blower for blast furnace ironmaking, including a support, a blower, a support frame, and a sliding frame. The blower is fixedly mounted on the top of the support, and the support frame is also fixedly mounted on the top of the support, close to the blower's air inlet pipe. The sliding frame is horizontally slidably mounted on the support frame, and at least two filter screens are provided on the sliding frame. The filter screens are slidably connected to the support frame and alternately connected to the air inlet pipe. The sliding frame and gear and rack transmission design of this utility model enable rapid switching of filter screens, ensuring continuous operation of the blast furnace without the need for shutdown, thus improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of steelmaking technology, and in particular to a blower for blast furnace ironmaking. Background Technology

[0002] Blast furnace blowers are crucial equipment in the ironmaking process, continuously supplying high-pressure air to the blast furnace. In existing technologies, the blower's inlet duct is typically equipped with a single-layer filter to block dust and particulate matter. However, after prolonged operation, the filter easily becomes clogged, leading to decreased air supply efficiency and increased energy consumption. Cleaning or replacing the filter requires shutting down the machine, severely impacting the continuity of blast furnace production. This not only reduces production efficiency but also increases maintenance costs. Therefore, there is an urgent need for a device that allows for filter maintenance without shutting down the machine. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a blower for blast furnace ironmaking, which solves the problem of low production efficiency caused by the need to stop the machine when the filter screen of the existing blower needs to be replaced.

[0004] This utility model is implemented as follows:

[0005] A blower for blast furnace ironmaking includes:

[0006] Support;

[0007] The blower is fixedly mounted on the top of the support;

[0008] A support frame is fixedly installed on the top of the support and is located near the air inlet pipe of the blower;

[0009] A sliding frame is horizontally slidably mounted on the support frame. The sliding frame is provided with at least two filters, which are slidably connected to the support frame and alternately connected to the air inlet pipe.

[0010] Furthermore, the support frame includes multiple vertically arranged upright plates, and a horizontal groove frame is fixedly connected to the top of the multiple upright plates. The top of the horizontal groove frame has an upward-facing U-shaped groove.

[0011] Furthermore, a rack is fixed on the bottom wall of the U-shaped groove, and sliding grooves are symmetrically opened on the two side walls of the U-shaped groove. The length directions of the rack and the sliding grooves are parallel to the length direction of the U-shaped groove.

[0012] Furthermore, the sliding frame has an H-shaped structure, including an upper groove and a lower groove. Two gears are rotatably arranged in the lower groove, and the two gears mesh with the rack. Two slide rails are symmetrically arranged on the outer wall of the sliding frame, and the slide rails are embedded in the slide groove and slidably connected to it.

[0013] Furthermore, the top of the horizontal slot frame is symmetrically fixed with first positioning components at both ends. The first positioning components include a first positioning plate, a clearance groove is opened in the middle of the first positioning plate, and blind holes are symmetrically opened on both sides of the clearance groove. A spring is installed in the blind hole, one end of the spring abuts against the bottom of the blind hole, and the other end is fixedly connected to a first pin, which protrudes from the blind hole.

[0014] Furthermore, the sliding frame is symmetrically provided with second positioning plates at both ends. The second positioning plates have a convex structure, and arc-shaped grooves are symmetrically opened on both side walls of the second positioning plates. The first pin is engaged or disengaged from the arc-shaped grooves.

[0015] Furthermore, the filter screen is embedded in the upper groove, and a top plate is fixedly connected to the top of the filter screen. The top plate has a U-shaped structure with the opening facing downwards. The filter screen, the top plate, and the sliding frame are all connected by positioning bolt assemblies.

[0016] Furthermore, the positioning bolt assembly includes a positioning bolt, wherein a cone is fixedly provided at one end of the bolt near the head, a cone sleeve is coaxially sleeved on the outer side of the cone, and a nut is screwed to the other end of the bolt.

[0017] Furthermore, a connecting flange is coaxially sleeved on the outer side of the air inlet pipe, one end of which is fixedly connected to the air inlet pipe and the other end is fixedly connected to the filter screen.

[0018] Furthermore, the filter screen and the connecting flange are respectively provided with positioning holes, and positioning pins are inserted into the positioning holes.

[0019] The beneficial effects of this utility model are:

[0020] This utility model of a blower for blast furnace ironmaking features a sliding frame and gear rack transmission design that enables rapid filter screen alternation, ensuring continuous blast furnace operation without downtime and improving production efficiency. The spring, first pin, and arc-shaped groove work together to ensure precise filter screen alignment, avoiding errors from manual adjustment. The positioning bolt assembly, connecting flange, and positioning pin design simplify the disassembly and assembly process, reducing maintenance costs. The cone-shaped locking structure not only improves the positioning accuracy of the filter screen installation but also effectively resists blast furnace vibration, extending the filter screen's service life. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is an exploded view of this utility model;

[0023] Figure 3 This is an exploded view of the support frame and sliding frame of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the sliding frame of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Support; 2. Blower; 21. Air inlet pipe; 22. Connecting flange; 3. Support frame; 31. Vertical plate; 32. Horizontal groove frame; 321. U-shaped groove; 322. Rack; 323. Slide groove; 33. Reinforcing rib plate; 4. Sliding frame; 41. Upper groove; 42. Lower groove; 43. Gear; 44. Slide rail; 45. Second positioning plate; 451. Arc-shaped groove; 5. Filter screen; 6. First positioning assembly; 61. First positioning plate; 611. Clearance groove; 62. Spring; 63. First pin; 7. Top plate; 8. Positioning bolt; 9. Tapered sleeve; 10. Positioning pin. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figures 1-4 The diagram shows a blower for blast furnace ironmaking according to this utility model, comprising a support 1, a blower 2, a support frame 3, and a sliding frame 4. The blower 2 is fixedly mounted on the top of the support 1, and the support frame 3 is fixedly mounted on the top of the support 1 and positioned close to the air inlet pipe 21 of the blower 2. The sliding frame 4 is horizontally slidably mounted on the support frame 3, and at least two filter screens 5 are provided on the sliding frame 4. The filter screens 5 are slidably connected to the support frame 3 and alternately connected to the air inlet pipe 21.

[0029] Support 1 provides stable support for blower 2. The bottom of blower 2 is fixedly connected to the top of support 1 by bolts. Blower 2 is fixedly mounted on the top of support 1. Support frame 3 is fixedly welded to the top of support 1. Support frame 3 includes multiple vertically arranged upright plates 31. Horizontal channel frame 32 is fixedly connected to the top of the multiple upright plates 31. A reinforcing rib plate 33 is also connected to one side of each upright plate 31. The top of the reinforcing rib plate 33 is fixedly connected to the bottom of the horizontal channel frame 32, and one side of the reinforcing rib plate 33 is fixedly connected to one side of the upright plate 31 to improve the stability of support frame 3. The top of the horizontal channel frame 32 has an upward-facing U-shaped groove 321. A rack 322 is fixedly mounted on the bottom wall of the U-shaped groove 321. Sliding grooves 323 are symmetrically opened on the two side walls of the U-shaped groove 321. The length direction of the rack 322 and the sliding groove 323 is parallel to the length direction of the U-shaped groove 321.

[0030] The sliding frame 4 is horizontally slidably disposed within the U-shaped groove 321 on the support frame 3. The sliding frame 4 has an H-shaped structure, including an upper groove 41 and a lower groove 42. Two gears 43 are rotatably disposed within the lower groove 42. Specifically, the two gears 43 are rotatably connected to the lower groove 42 via a rotating shaft. The two gears 43 mesh with a rack 322. Two slide rails 44 are symmetrically disposed on the outer wall of the sliding frame 4. The slide rails 44 are embedded in and slidably connected to the slide groove 323. The filter screen 5 is embedded in the upper groove 41. Through the horizontal movement of the sliding frame 4, the two filter screens 5 can alternately mate with the air inlet pipe 21. When the filter screen 5 is clogged and needs to be replaced, simply slide the other filter screen 5 until it aligns with and connects to the air inlet pipe 21, and then remove the filter screen 5 that needs to be replaced, thus achieving the function of replacing the filter screen 5 without stopping the machine. When the sliding frame 4 is pushed, the gears 43 roll along the rack 322, and the slide rails 44 are guided within the slide groove 323 to ensure that the sliding frame 4 moves smoothly horizontally. When the sliding frame 4 moves to the preset position, the filter 5 aligns with the air inlet pipe 21.

[0031] The top of the horizontal slot frame 32 is symmetrically fixed with first positioning components 6 at both ends. The first positioning components 6 include a first positioning plate 61, a relief groove 611 in the middle of the first positioning plate 61, and blind holes symmetrically opened on both sides of the relief groove 611. A spring 62 is installed in the blind hole, one end of the spring 62 abuts against the bottom of the blind hole, and the other end is fixedly connected to a first pin 63. The first pin 63 extends outward from the blind hole and protrudes out of the blind hole. The sliding frame 4 is symmetrically fixed with second positioning plates 45 at both ends. The second positioning plates 45 have a convex structure, and arc-shaped grooves 451 are symmetrically opened on both side walls of the second positioning plates 45. The first pin 63 is engaged or disengaged from the arc-shaped grooves 451. When the sliding frame 4 moves to the working position, one end of the sliding frame 4 pushes against the first pin 63, and the spring 62 is compressed. When it moves to the working position, the spring 62 returns to its original position, extends, pushes against the first pin 63, moves towards the center of the relief groove 611, and engages with the arc-shaped groove 451, achieving self-locking. When it is necessary to push the sliding frame 4, push the first pin 63 away from the center of the relief groove 611. The spring 62 is compressed and drives the first pin 63 to retract. After disengaging from the arc-shaped groove 451, the sliding frame 4 can move freely.

[0032] A top plate 7 is fixedly connected to the top of the filter screen 5. The top plate 7 has a U-shaped structure with the opening facing downwards. That is, the bottom of the filter screen 5 is embedded in the upper groove 41 of the sliding frame 4, and the top is covered by the U-shaped top plate 7. The top and bottom of the filter screen 5 are connected to the top plate 7 and the sliding frame 4 respectively by a positioning bolt assembly. The positioning bolt assembly includes a positioning bolt 8. The end of the screw of the positioning bolt 8 near the head is provided with a truncated cone (not shown in the figure). A conical sleeve 9 is coaxially sleeved on the outside of the truncated cone. The conical sleeve 9 is fixedly set on one side of the top plate 7 and the sliding frame 4. A nut (not shown in the figure) is screwed to the other end of the screw. During installation, the screw of the positioning bolt 8 passes through the conical sleeve 9, the top plate 7, and the filter screen 5 respectively, or passes through the conical sleeve 9, the sliding frame 4, and the filter screen 5 in sequence. The truncated cone and the conical sleeve 9 abut against each other to position the filter screen 5 with the sliding frame 4 and the top plate 7. By tightening the nut, it is made to fit tightly against the other outer wall of the sliding frame 4 and the top plate 7 respectively, which plays a good role in positioning and fastening, and effectively prevents the filter screen 5 from loosening. In addition, the mating structure of the cone and cone sleeve 9 provides multi-point radial locking force to prevent the filter screen 5 from falling off due to vibration. Disassembly only requires loosening the nut, making maintenance and replacement convenient.

[0033] A connecting flange 22 is coaxially fitted on the outer side of the air inlet duct 21. The edge of the filter screen 5 corresponds to the flange interface. One end of the connecting flange 22 is fixedly connected to the air inlet duct 21, and the other end is fixedly connected to the filter screen 5. Positioning holes are correspondingly provided on the filter screen 5 and the connecting flange 22, and positioning pins 10 are inserted into the positioning holes. When the filter screen 5 moves to align with the air inlet duct 21, its flange interface is fixed to the connecting flange 22 of the air inlet duct 21 by the positioning pins 10. A sealing gasket (not shown in the figure) is provided on the flange mating surface to ensure airtightness. The positioning pins 10 are inserted into the positioning holes of the filter screen 5 and the connecting flange 22 to assist in quick alignment, avoid installation deviations, improve docking efficiency, and reduce downtime.

[0034] When the blower for blast furnace ironmaking of this utility model is in use, the arc-shaped groove 451 on the second positioning plate 45 at one end of the movable sliding frame 4 engages with the first pin 63 on the support frame 3 to achieve positioning of the sliding frame 4. At this time, a filter screen 5 on the sliding frame 4 is just aligned with the air inlet pipe 21. By inserting the positioning pin 10 into the filter screen 5 and the connecting flange 22, the filter screen 5 and the air inlet pipe 21 are accurately positioned and fastened. After a period of use, if the filter screen 5 needs to be replaced, the positioning pin 10 is removed. Pull out the filter 5, and the filter screen 5 is no longer connected to the air inlet pipe 21. Push the first pin 63 away from the center of the relief groove 611. The spring 62 is compressed and drives the first pin 63 to retract. After disengaging from the arc-shaped groove 451, the sliding frame 4 moves in the opposite direction to the arc-shaped groove 451 of the second positioning plate 45 at its other end, and engages with the first pin 63 on the corresponding side. At this time, the other filter screen 5 is aligned with the air inlet pipe 21. Insert the positioning pin 10 between the filter screen 5 and the connecting flange 22 to realize the replacement of the other filter screen 5.

[0035] While this utility model discloses preferred embodiments to achieve the above objectives, it is not intended to limit the structural features of this utility model. Anyone skilled in the art should know that any easily conceivable variations or modifications are possible under the technical spirit of this utility model and are covered by the patent claims of this utility model.

Claims

1. A blast furnace for iron making, characterized by, include: Support; A blower is fixedly mounted on the top of the support; A support frame is fixedly installed on the top of the support and is located near the air inlet pipe of the blower; A sliding frame is horizontally slidably mounted on the support frame. The sliding frame is provided with at least two filters, which are slidably connected to the support frame and alternately connected to the air inlet pipe.

2. The blast furnace for ironmaking according to claim 1, characterized by, The support frame includes multiple vertically arranged upright plates, and a horizontal groove frame is fixedly connected to the top of the multiple upright plates. The top of the horizontal groove frame has an upward-facing U-shaped groove.

3. The blast furnace for ironmaking according to claim 2, characterized by, A rack is fixed on the bottom wall of the U-shaped groove, and sliding grooves are symmetrically opened on the two side walls of the U-shaped groove. The length directions of the rack and the sliding grooves are parallel to the length direction of the U-shaped groove.

4. The blast furnace for ironmaking according to claim 3, characterized by The sliding frame has an H-shaped structure, including an upper groove and a lower groove. Two gears are rotatably installed in the lower groove, and the two gears mesh with the rack. Two slide rails are symmetrically provided on the outer wall of the sliding frame, and the slide rails are embedded in the slide groove and slidably connected to it.

5. The blast furnace for ironmaking according to claim 4, characterized by The top of the horizontal slot frame is symmetrically fixed with first positioning components at both ends. The first positioning components include a first positioning plate. A clearance groove is opened in the middle of the first positioning plate. Blind holes are symmetrically opened on both sides of the clearance groove. A spring is installed in the blind hole. One end of the spring abuts against the bottom of the blind hole, and the other end is fixedly connected to a first pin. The first pin protrudes from the blind hole.

6. The blast furnace for ironmaking according to claim 5, characterized by The sliding frame is symmetrically provided with second positioning plates at both ends. The second positioning plates have a convex structure and arc-shaped grooves are symmetrically provided on both side walls of the second positioning plates. The first pin is engaged or disengaged from the arc-shaped grooves.

7. The blower for blast furnace ironmaking according to claim 4 or 5, characterized in that, The filter screen is embedded in the upper groove, and a top plate is fixedly connected to the top of the filter screen. The top plate is a U-shaped structure with the opening facing downwards. The filter screen, the top plate, and the sliding frame are all connected by positioning bolt assemblies.

8. The blast furnace for ironmaking according to claim 7, characterized by The positioning bolt assembly includes a positioning bolt, a truncated cone is fixed at one end of the bolt near the head, a conical sleeve is coaxially fitted on the outer side of the truncated cone, and a nut is screwed to the other end of the bolt.

9. The blast furnace for iron making according to claim 1, characterized by, A connecting flange is coaxially sleeved on the outer side of the air inlet pipe. One end of the connecting flange is fixedly connected to the air inlet pipe, and the other end is fixedly connected to the filter screen.

10. The blast furnace for ironmaking according to claim 9, characterized by The filter screen and the connecting flange are respectively provided with positioning holes, and positioning pins are inserted into the positioning holes.

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