Centrifugal fan pipeline for steel mill

Abstract

The invention discloses a centrifugal fan pipeline for a steel mill, and relates to the technical field of centrifugal fans, in particular to the centrifugal fan pipeline for the steel mill, which comprises a fan main pipeline, fan inlet waist-shaped pipes for air intake are connected to two sides of the fan main pipeline, and an air outlet is formed in one side of the fan main pipeline. The lower end of the inner side of the fan inlet kidney-shaped pipe is circularly connected to the fan main pipeline in a sleeving mode, an inserting plate connected with the fan main pipeline in an inserting mode is movably connected to the interior of the connecting position of the fan inlet kidney-shaped pipe and the fan main pipeline, and the fan inlet kidney-shaped pipe is movably sleeved with a detachable annular plate driving the inserting plate to move. And an extendable and foldable connecting pipeline is connected to the air outlet. According to the centrifugal fan pipeline for the steel mill, through connection of the connecting pipeline, the length and multi-angle random adjustment of the air outlet plate can be achieved so as to adapt to the specific use environment of the centrifugal fan pipeline, the use number of elbows is reduced, and specific adjustment can be completed through stretching.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal fans, in particular to a centrifugal fan pipeline for a steel plant. Background Art

[0002] In the process of steel production in steel mills, all kinds of gases are usually generated or hot gases need to be discharged. Therefore, a fan that can be directly embedded in the air duct or other gas delivery pipeline and has the characteristics of easy installation, large air volume, high pressure head, low noise, high energy efficiency, etc. is needed to discharge it. Centrifugal fans can discharge the gases or hot gases generated, so they are widely used. At present, the core components of duct fans mostly use axial flow blades, but the disadvantages of axial flow blades are low wind pressure and high noise, which cannot meet the application requirements of certain specific occasions. In order to solve the above problems, the industry usually uses centrifugal wind wheels instead of axial flow wind wheels; and centrifugal fans are mainly used for dust removal and exhaust gas discharge in steel mills. Therefore, the air outlet of the centrifugal fan is usually connected to the pipeline (i.e. the chimney for exhaust gas discharge) in the later stage to discharge the exhaust gas. The pipeline needs to be bent at a certain angle in actual use to adapt to the environment of the site. In this way, it is necessary to use a variety of different elbows to connect and achieve the bending effect, which makes it inconvenient to adjust the extension angle of the pipeline. For this reason, we propose a centrifugal fan pipeline for steel mills. Summary of the invention

[0003] The present invention provides a centrifugal fan pipeline for a steel plant, which solves the problems raised by the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a centrifugal fan duct for a steel plant, comprising a fan main duct, fan inlet waist-shaped tubes for air intake are connected on both sides of the fan main duct, and an air outlet is opened on one side of the fan main duct, the lower end of the inner side of the fan inlet waist-shaped tube is circularly sleeved on the fan main duct, and a plug-in plate plugged into the fan main duct is movably connected inside the connection between the fan inlet waist-shaped tube and the fan main duct, a disassembly ring plate for driving the plug-in plate to move is movably sleeved on the fan inlet waist-shaped tube, an extendable and foldable connecting pipe is connected at the air outlet, one end of the connecting pipe is fixedly connected to an air outlet plate, and a sealing plate for changing the air outlet diameter of the air outlet plate is movably connected to the air outlet plate, and a rotating ring plate for driving the sealing plate to move and adjust is sleeved on the air outlet plate.

[0005] Optionally, a detachable mesh plate is connected to the place where the fan main duct is connected to the fan inlet waist-shaped tube, and the two sides of the circular edge of the mesh plate are respectively abutted against the fan main duct and the fan inlet waist-shaped tube.

[0006] Optionally, both sides of the plug board are corrugated, and the part of the fan main pipeline where the plug board is plugged in has corrugations corresponding to the two sides of the plug board.

[0007] Optionally, one end of the plug-in plate inside the fan inlet waist-shaped tube is fixedly connected to a second spring, one end of the second spring is fixed to the fan inlet waist-shaped tube, and a plurality of bolts are threadedly mounted on the fan main pipe, and one end of the bolts extending into the fan main pipe passes through the plug-in plate.

[0008] Optionally, the disassembly ring plate is penetrated by an arc groove which gradually approaches the center of the disassembly ring plate, and the plug-in plate is fixedly connected to a driving column on one side of one end of the fan inlet waist-shaped tube, and the driving column is movably connected in the arc groove.

[0009] Optionally, a pull rod is fixedly connected to the air outlet of the fan main duct, a hook is hooked on the pull rod, one end of the hook is fixedly connected to a first spring, and one end of the first spring is fixed to the air outlet plate.

[0010] Optionally, the air outlet plate is provided with an equilateral polygonal slide rail corresponding to the sealing plate, the rotating ring plate is provided with a plurality of straight slots corresponding to the sealing plate, and a slide rod is connected to the sealing plate, one end of the slide rod extends into the slide rail and is movably connected thereto, and the other end of the slide rod extends into the straight slot and is movably connected thereto.

[0011] Optionally, a limiting column extending out of the air outlet plate is movably connected on the outer side of the place where the air outlet plate and the rotating ring plate are sleeved, and one end of the limiting column located inside the air outlet plate is fixedly connected to a third spring, and one end of the third spring is fixed to the air outlet plate.

[0012] Optionally, a plurality of hemispherical limiting grooves are provided on the inner side of the place where the rotating ring plate and the air outlet plate are sleeved, and one end of the limiting column extending out of the air outlet plate is round and plugged into the limiting groove on the rotating ring plate.

[0013] The present invention has the following beneficial effects:

[0014] 1. The steel plant uses centrifugal fan ducts. Through the connection of the connecting ducts, the air outlet plate can be adjusted in length and at multiple angles to adapt to its specific use environment, reducing the number of elbows used, and the specific adjustment can be completed by stretching, saving its specific use parts, making it more convenient to use.

[0015] 2. The centrifugal fan duct of the steel plant is installed by relative rotation between the fan inlet waist-shaped tube and the fan main duct, and under the action of the second spring force, the plug-in plate can be plugged into the fan main duct, so that the fan inlet waist-shaped tube can be installed on the fan main duct, and then the fan inlet waist-shaped tube can be adjusted according to its specific use environment, making it more convenient to use.

[0016] 3. The steel plant uses a centrifugal fan duct, which rotates the ring plate relative to the air outlet plate, and then drives the sliding rod to move, so that the sealing plate can move, and the size of the opening between the sealing plates is changed to change the flow rate of the air outlet, further increasing the exhaust gas discharge height, and then the exhaust gas discharge height can be adjusted to meet the needs of different exhaust gas discharge heights, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the connecting pipe connection of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the slide rail connection of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the connection of the plug board of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the disassembly ring plate connection of the present invention;

[0023] Figure 7 It is a schematic diagram of the structure of A of the present invention;

[0024] Figure 8 It is a schematic diagram of the structure of B of the present invention.

[0025] In the figure: 1. fan main duct; 2. fan inlet waist-shaped tube; 3. connecting duct; 4. air outlet plate; 5. rotating ring plate; 6. bolts; 7. sealing plate; 8. mesh plate; 9. straight slot; 10. first spring; 11. slide rail; 12. limiting column; 13. slide rod; 14. plug-in board; 15. second spring; 16. disassembly ring plate; 17. drive column; 18. arc groove; 19. pull rod; 20. hook; 21. third spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 6A centrifugal fan pipeline for a steel plant includes a fan main pipeline 1, and fan inlet waist-shaped pipes 2 for air intake are connected to both sides of the fan main pipeline 1, and an air outlet is opened on one side of the fan main pipeline 1. Air is taken in through the two fan inlet waist-shaped pipes 2, which expands the air intake channel and reduces the inlet pipeline resistance, thereby generating a larger air volume. The lower end of the inner side of the fan inlet waist-shaped pipe 2 is circularly sleeved on the fan main pipeline 1, so that the fan inlet waist-shaped pipe 2 can be more conveniently connected with the fan main pipeline The fan inlet waist-shaped tube 2 is adjusted to meet its specific usage requirements, and a plug-in board 14 plugged into the fan main pipeline 1 is movably connected inside the connection between the fan inlet waist-shaped tube 2 and the fan main pipeline 1. The plug-in board 14 can move relative to the fan inlet waist-shaped tube 2 and can be completely moved into the fan inlet waist-shaped tube 2. Through the plug-in of the plug-in board 14, the fan inlet waist-shaped tube 2 can be stably connected to the fan main pipeline 1, and the adjusted position of the fan inlet waist-shaped tube 2 can be adjusted. The fan inlet waist-shaped tube 2 is movably sleeved with a disassembly ring plate 16 for driving the plug-in plate 14 to move. By rotating the disassembly ring plate 16, the plug-in plate 14 can be completely moved into the fan inlet waist-shaped tube 2 to ensure the smooth installation between the fan main duct 1 and the fan inlet waist-shaped tube 2. An extendable and foldable connecting pipe 3 is connected at the air outlet, and one end of the connecting pipe 3 is fixedly connected to an air outlet plate 4. Through the connection of the connecting pipe 3, it can be extended to adjust the length and change multiple angles, so that it is more convenient to use. In addition, a sealing plate 7 that can change the air outlet diameter of the air outlet plate 4 is movably connected to the air outlet plate 4, and the size of the opening between the sealing plates 7 is changed to change the flow rate of the air outlet, further improving the exhaust gas discharge height, and then the exhaust gas discharge height can be adjusted to meet the requirements of different exhaust gas discharge heights. The air outlet plate 4 is sleeved with a rotating ring plate 5 that can drive the sealing plate 7 to move and adjust. When the rotating ring plate 5 rotates, the sealing plate 7 can be adjusted to its opening size.

[0028] See also Figures 1 to 6 A detachable mesh plate 8 is connected at the connection point between the fan main pipeline 1 and the fan inlet waist-shaped tube 2, and the two sides of the circular edge of the mesh plate 8 are respectively abutted against the fan main pipeline 1 and the fan inlet waist-shaped tube 2, so that when the fan inlet waist-shaped tube 2 is removed, the mesh plate 8 can be completely disassembled. The mesh plate 8 can screen out large pieces of debris to avoid damage to the wind wheel.

[0029] See also Figures 1 to 6 The two sides of the plug-in board 14 are corrugated, and the place where the plug-in board 14 is plugged into the fan main pipeline 1 has corrugations corresponding to the two sides of the plug-in board 14, which increases the resistance to the movement of the plug-in board 14, so that the plug-in board 14 can be stably plugged in when it vibrates during operation.

[0030] See also Figures 1 to 6One end of the plug-in board 14 located in the fan inlet waist-shaped tube 2 is fixedly connected to a second spring 15, and one end of the second spring 15 is fixed to the fan inlet waist-shaped tube 2. Under the action of the elastic force of the second spring 15, the plug-in board 14 can be autonomously plugged into the fan main pipeline 1, thereby making the plug-in of the plug-in board 14 more stable, and a plurality of bolts 6 are threadedly sleeved on the fan main pipeline 1, and one end of the bolts 6 extending into the fan main pipeline 1 passes through the plug-in board 14 to finally position the plug-in board 14, thereby making the plug-in of the plug-in board 14 more secure.

[0031] See also Figures 1 to 6 The disassembly ring plate 16 is penetrated with an arc groove 18 which gradually approaches the center of the disassembly ring plate 16. The plug-in plate 14 is located at one end of the fan inlet waist-shaped tube 2 and is fixedly connected with a driving column 17. The driving column 17 is movably connected in the arc groove 18. When the disassembly ring plate 16 rotates, the driving column 17 can move relatively in the arc groove 18 and drive the plug-in plate 14 to move.

[0032] See also Figures 1 to 7 A pull rod 19 is fixedly connected to the air outlet of the fan main pipeline 1, and a hook 20 is hooked on the pull rod 19. One end of the hook 20 is fixedly connected to a first spring 10, and one end of the first spring 10 is fixed to the air outlet plate 4. Under the pulling force of the first spring 10, the hook 20 can be stably hung on the pull rod 19, so that the connecting pipeline 3 can be folded and stored, making it more convenient to transport.

[0033] See also Figures 1 to 8 The air outlet plate 4 is provided with an equilateral polygonal slide rail 11 corresponding to the sealing plate 7, and the rotating ring plate 5 is provided with a plurality of straight slots 9 corresponding to the sealing plate 7, and a slide rod 13 is connected to the sealing plate 7, one end of the slide rod 13 extends into the slide rail 11 and is movably connected thereto, and the slide rod 13 can be relatively moved in the slide rail 11, and the other end of the slide rod 13 extends into the straight slot 9 and is movably connected thereto, and the slide rod 13 can be relatively moved in the straight slot 9. With the mutual cooperation of the straight slot 9 and the slide rail 11, the sealing plates 7 can always be in contact with each other, and the size of the opening can be changed by moving the sealing plates 7.

[0034] See also Figures 1 to 8 A limiting column 12 extending out of the air outlet plate 4 is movably connected to the outer side of the place where the air outlet plate 4 and the rotating ring plate 5 are sleeved. The limiting column 12 can move relative to the air outlet plate 4. One end of the limiting column 12 located in the air outlet plate 4 is fixedly connected to a third spring 21. One end of the third spring 21 is fixed to the air outlet plate 4. Under the action of the elastic force of the third spring 21, the limiting column 12 can extend out of the air outlet plate 4 autonomously.

[0035] See also Figures 1 to 8A plurality of hemispherical limiting grooves are provided on the inner side of the place where the rotating ring plate 5 and the air outlet plate 4 are sleeved. The limiting column 12 is round at one end extending out of the air outlet plate 4 and is plugged into the limiting groove on the rotating ring plate 5. Under the action of the hemispherical structure, the limiting column 12 can be smoothly pushed, and under the plug-in action of the limiting column 12, the rotating ring plate 5 can be positioned after rotation.

[0036] In summary, the centrifugal fan pipeline used in the steel plant can be used to install the fan inlet waist-shaped tube 2 according to its specific usage. Before installing the sleeve, first screw the disassembly ring plate 16 so that the disassembly ring plate 16 can drive the plug-in plate 14 to move through the driving column 17, so that the plug-in plate 14 is completely moved into the fan inlet waist-shaped tube 2, and then the fan inlet waist-shaped tube 2 is installed. After the installation is adjusted to the appropriate angle, the disassembly ring plate 16 is loosened. At this time, under the action of the elastic force of the second spring 15, the plug-in plate 14 can be plugged into the fan main pipeline 1, and the mesh plate 8 is installed in the wind first. The fan main duct 1 is then installed at the fan inlet waist-shaped tube 2, so that the mesh plate 8 can be stably installed between the fan main duct 1 and the fan inlet waist-shaped tube 2 for filtering. When it is necessary to extend or change the air outlet angle of the fan main duct 1, the hook 20 is removed from the pull rod 19, and then the connecting duct 3 is stretched to change the angle so that the length and angle of the air outlet can be adjusted. When controlling the air outlet height, the rotating ring plate 5 can be relatively rotated so that the sliding rod 13 can drive the sealing plate 7 to move, and change the size of the opening between the sealing plates 7 to change the flow rate of the air outlet, thereby achieving the effect of changing the height of the air outlet.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0038] 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 centrifugal fan pipeline for a steel plant, comprising a fan main pipeline (1), fan inlet waist-shaped pipes (2) for air intake are connected to both sides of the fan main pipeline (1), and an air outlet is opened on one side of the fan main pipeline (1), characterized in that: The lower end of the inner side of the fan inlet waist-shaped tube (2) is circularly sleeved on the fan main pipe (1), and a plug-in plate (14) plugged into the fan main pipe (1) is movably connected inside the connection between the fan inlet waist-shaped tube (2) and the fan main pipe (1), a disassembly ring plate (16) for driving the plug-in plate (14) to move is movably sleeved on the fan inlet waist-shaped tube (2), an extendable and foldable connecting pipe (3) is connected at the air outlet, one end of the connecting pipe (3) is fixedly connected to an air outlet plate (4), and a sealing plate (7) for changing the air outlet diameter of the air outlet plate (4) is movably connected to the air outlet plate (4), and a rotating ring plate (5) for driving the sealing plate (7) to move and adjust is sleeved on the air outlet plate (4).

2. The centrifugal fan pipeline for steel mill according to claim 1, characterized in that: A detachable mesh plate (8) is connected to the connection point between the fan main pipeline (1) and the fan inlet waist-shaped tube (2), and the two sides of the circular edge of the mesh plate (8) are respectively in contact with the fan main pipeline (1) and the fan inlet waist-shaped tube (2).

3. The centrifugal fan pipeline for steel mill according to claim 2, characterized in that: Both sides of the plug-in board (14) are in a corrugated shape, and the portion on the fan main pipeline (1) where the plug-in board (14) is plugged in has corrugations corresponding to both sides of the plug-in board (14).

4. The centrifugal fan pipeline for steel mill according to claim 3, characterized in that: One end of the plug-in board (14) located in the fan inlet waist-shaped tube (2) is fixedly connected to a second spring (15), one end of the second spring (15) is fixed to the fan inlet waist-shaped tube (2), and a plurality of bolts (6) are threadedly mounted on the fan main pipe (1), and one end of the bolts (6) extending into the fan main pipe (1) passes through the plug-in board (14).

5. The centrifugal fan pipeline for steel mill according to claim 4, characterized in that: The disassembly ring plate (16) is provided with an arc-shaped groove (18) which gradually approaches the center of the disassembly ring plate (16); the plug-in plate (14) is fixedly connected to a driving column (17) on one side of one end of the fan inlet waist-shaped tube (2); and the driving column (17) is movably connected in the arc-shaped groove (18).

6. The centrifugal fan pipeline for steel mill according to claim 2, characterized in that: A pull rod (19) is fixedly connected to the air outlet of the fan main pipeline (1), a hook (20) is hooked on the pull rod (19), one end of the hook (20) is fixedly connected to a first spring (10), and one end of the first spring (10) is fixed to the air outlet plate (4).

7. The centrifugal fan pipeline for steel mill according to claim 6, characterized in that: The air outlet plate (4) is provided with an equilateral polygonal slide rail (11) corresponding to the sealing plate (7); the rotating ring plate (5) is provided with a plurality of straight slots (9) corresponding to the sealing plate (7); and a slide rod (13) is connected to the sealing plate (7); one end of the slide rod (13) extends into the slide rail (11) and is movably connected thereto, and the other end of the slide rod (13) extends into the straight slot (9) and is movably connected thereto.

8. The centrifugal fan pipeline for steel mill according to claim 7, characterized in that: A limiting column (12) extending out of the air outlet plate (4) is movably connected to the outer side of the place where the air outlet plate (4) and the rotating ring plate (5) are sleeved, and one end of the limiting column (12) located inside the air outlet plate (4) is fixedly connected to a third spring (21), and one end of the third spring (21) is fixed to the air outlet plate (4).

9. The centrifugal fan pipeline for steel mill according to claim 8, characterized in that: A plurality of hemispherical limiting grooves are provided on the inner side of the place where the rotating ring plate (5) and the air outlet plate (4) are sleeved, and one end of the limiting column (12) extending out of the air outlet plate (4) is round and plugged into the limiting groove on the rotating ring plate (5).

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