Blast furnace air volume adjusting device

Abstract

The utility model discloses a blast furnace air volume adjusting device, and relates to the technical field of blast furnace air volume adjustment. The air supply device comprises an air supply pipe, a main air outlet pipe, an auxiliary air outlet pipe and an air quantity adjusting pipe, the main air outlet pipe is connected with a flange on one side of the air supply pipe, a branch pipe is communicated with the upper end of the air supply pipe, the auxiliary air outlet pipe is connected with an end flange of the branch pipe, and the upper end of the main air outlet pipe and the upper end of the auxiliary air outlet pipe are respectively provided with a receding groove for installing the air quantity adjusting pipe. The inner surfaces of the main air outlet pipe and the auxiliary air outlet pipe are provided with embedded grooves for the bottom of the air volume adjusting pipe to abut against, and the air volume adjusting pipe, the main air outlet pipe and the auxiliary air outlet pipe are fixed through limiting bolts. According to the utility model, the air supply volume of the blast furnace air hole is conveniently detected by arranging the air volume adjusting pipe, the air supply volume can be dynamically monitored by utilizing the digital display type air volume meter, and the air supply volume is controlled by utilizing the covering blade to rotate to adjust the covering area of the air hole.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the blast furnace air volume regulation technical field, concretely relates to a blast furnace air volume regulation device. BACKGROUND

[0002] Adjusting tuyere area is an important means of blast furnace lower regulation, when the center overblowing, edge gas flow is too weak, or in the center gas flow is too weak, edge is too developed, all need to adjust tuyere area;

[0003] The prior art with publication number CN216274220U includes an adjusting cylinder, a tuyere pipe, a pressing plate and a blocking ring, one end of the adjusting cylinder is cast with a blocking ring, the adjusting cylinder and the blocking ring are communicated with each other through an air duct, the adjusting cylinder is movably inserted into the tuyere pipe, the outer wall of the tuyere pipe is fixed with a limiting ring through bolts, a threaded rod is installed on the limiting ring in a threaded manner, one end of the threaded rod is welded with a mounting sleeve, a movable rod is slidably installed on the mounting sleeve, the movable rod is installed with blocking blocks in a threaded manner at both ends, the diameter of the blocking blocks is larger than the inner diameter of the mounting sleeve, the other end of the threaded rod is rotatably installed with the pressing plate through a mounting block, the pressing plate and the outer wall of the blocking ring are in contact with each other, the utility model has the advantages of compact structure, convenient use, convenient adjustment of blast furnace tuyere air volume and meeting the use requirements of personnel;

[0004] The above-mentioned prior art adjusts the air volume of the blast furnace air outlet hole by replacing the customized air adjusting cylinder, but it cannot dynamically detect the current air volume, and each adjustment needs to manually tighten or loosen the limiting bolt, which is tedious, so the utility model is proposed. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a blast furnace air volume regulation device.

[0006] To solve the above-mentioned technical problems, the basic idea of the technical scheme of the utility model is:

[0007] A blast furnace air volume regulation device, including a blast pipe, a main air outlet pipe, an auxiliary air outlet pipe and an air volume regulation pipe, the side flange of the blast pipe is connected with the main air outlet pipe, the upper end of the blast pipe is communicated with a branch pipe, the end flange of the branch pipe is connected with the auxiliary air outlet pipe, the upper end of the main air outlet pipe and the auxiliary air outlet pipe is provided with a gap for the air volume regulation pipe, the inner surface of the main air outlet pipe and the auxiliary air outlet pipe is provided with an embedded groove for the bottom of the air volume regulation pipe, the air volume regulation pipe is fixed between the main air outlet pipe and the auxiliary air outlet pipe through a limiting bolt, the air outlet port of the main air outlet pipe and the auxiliary air outlet pipe can be connected with the blast inlet port;

[0008] The middle part of the air volume adjusting pipe is fixed with a baffle, a plurality of ventilation holes are arranged in the middle part of the baffle, the middle parts of the two baffles are both provided with rotating rods through bearings, the outer end of the rotating rod is fixedly sleeved with a driven gear which is engaged with a driving gear, the driving gear is fixedly sleeved on the outer end of the output shaft of a small motor, the small motor is installed in the inside of a cabinet, the cabinet is fixed on the middle part of the baffle through a U-shaped frame, and the inside of the cabinet is provided with a remote control module for controlling the small motor.

[0009] The outer end of the rotating rod is provided with a plurality of cover blades for covering the ventilation holes through fixing bolts, and the number of the cover blades matches the number of the ventilation holes.

[0010] The upper end of each air volume adjusting pipe is fixed with a digital air volume meter through a screw, and the monitoring end of the digital air volume meter penetrates into the middle part of the air volume adjusting pipe.

[0011] Optionally, the middle part of the branch pipe is provided with a second electromagnetic control valve.

[0012] Optionally, the middle part of the baffle is fixed with an L-shaped supporting piece, a groove for placing the rotating rod is arranged on the lifting end of the L-shaped supporting piece, a ball is arranged on the middle part of the groove and in contact with the side surface of the rotating rod, a groove body for fixing the mounting block is arranged on the upper surface of the horizontal end of the L-shaped supporting piece, and the mounting bolt between the mounting block and the L-shaped supporting piece is fixed.

[0013] Optionally, the middle part of the rotating rod is provided with an air inlet channel, a third electromagnetic control valve is arranged on the air inlet port of the rotating rod, the other end of the third electromagnetic control valve is communicated with a mounting pipe, a filter cover is arranged on the outer end of the mounting pipe, and a filter screen is arranged on the middle part of the filter cover.

[0014] Optionally, the other end of the air inlet channel is provided with a multi-way pipe, the tail end of the multi-way pipe is an air outlet end, a fourth electromagnetic control valve is arranged on the middle part of the air outlet end, a plurality of gas injection end pipes are arranged in the middle part of the pipe body of the multi-way pipe in a ring array, the end of each gas injection end pipe penetrates into the inside of the cover blade and is communicated with the air nozzle of the stretchable air bag in the inside of the cover blade, one end of the stretchable air bag is fixed to the inner side wall of the cover blade, and the other end of the stretchable air bag is fixed to the surface of the abutting plate.

[0015] Optionally, the opposite surfaces of the cover blade and the baffle are provided with movable grooves for stretching the abutting plate, the number of the cover plates matches the number of the ventilation holes, the upper and lower ends of the cover plate are both provided with guide holes for penetrating the guide rods, and the guide rods are fixed in the inside of the cover blade.

[0016] Optionally, the middle part of the two air volume adjusting pipes is provided with a threaded groove matched with the external screw thread of the air collecting cover, and the air outlet of the air collecting cover is located at one side of the monitoring end of the digital air volume meter.

[0017] After the technical scheme is applied, the utility model has the following beneficial effects compared with the prior art, of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below:

[0018] 1、The utility model discloses a wind volume adjusting pipe is set up to the blast furnace air hole wind volume and has the convenient detection, and still can utilize the digital air volume meter dynamic monitoring wind volume, and wind volume will utilize the area of covering the ventilation hole that the cover blade rotates adjustment covers to control, namely the staff in the blast furnace control room controls the switch of remote controller to start the small -size motor, and the output shaft rotation of small -size motor drives the driven gear and rotates, makes the rotating rod rotate, at this time, the cover blade will adjust the area of covering the ventilation hole, and after adjusting to the angle that needs, opens the first electromagnetic valve, and the air volume enters the multichannel pipe and injects into the inside of telescopic air bag from multiple injection end pipes, and then telescopic air bag expands and makes the abutted plate contact with the surface of the baffle, and the sealing is completed, effectively prevent the gap air leakage condition;

[0019] 2、The utility model discloses a first electromagnetic control valve and second electromagnetic control valve are set up to the effect that the blast furnace is controlled to the wind volume adjusting pipe, thereby facilitate the worker regularly to the wind volume adjusting pipe maintenance, namely when the wind volume adjusting pipe maintenance of main air outlet pipe, the first electromagnetic control valve is closed, and the second electromagnetic control valve is opened, and the blast furnace is sent by the auxiliary blast pipe to the wind volume pipeline without through main blast pipe.

[0020] The specific embodiments of the utility model will be described in further detail below with reference to the drawings. ACCOUT OF DRAWINGS

[0021] The drawings in the following description are only some embodiments, and other drawings can be obtained by the drawings for the ordinary skilled in the art without paying the creative labor.

[0022] In the drawings:

[0023] Figure 1 It is the main view cross section structure schematic drawing of the utility model;

[0024] Figure 2 It is the combination part structure diagram of the wind volume adjusting pipe, baffle and air collecting cover in the utility model;

[0025] Figure 3 It is another view angle schematic diagram of the combination part structure of the baffle and ventilation hole in the utility model;

[0026] Figure 4 It is Figure 1A part structure schematic view in the figure;

[0027] Figure 5 As Figure 2 B part structure schematic view in the figure;

[0028] Figure 6 As Figure 2 C part structure schematic view in the figure;

[0029] Figure 7 As Figure 2 D part structure schematic view in the figure;

[0030] Figure 8 As Figure 2 E part structure schematic view in the figure.

[0031] In the drawings, the components represented by each reference numeral are listed as follows:

[0032] 1, air supply pipe; 2, main air outlet pipe; 3, branch pipe; 4, auxiliary air outlet pipe; 5, air volume adjusting pipe; 6, limiting bolt; 7, partition plate; 8, ventilation hole; 9, rotating rod; 10, bearing; 11, driving gear; 12, driven gear; 13, small motor; 14, case; 15, U-shaped frame; 16, remote control module; 17, fixing bolt; 18, covering blade; 19, digital display air volume meter; 20, first electromagnetic control valve; 21, second electromagnetic control valve; 22, L-shaped supporting piece; 23, ball; 24, mounting block; 25, mounting bolt; 26, cleaning brush; 27, third electromagnetic control valve; 28, mounting pipe; 29, filter cover; 30, filter screen; 31, multi-way pipe; 32, air outlet end; 33, fourth electromagnetic control valve; 34, telescopic air bag; 35, abutting plate; 36, guide rod; 37, air collecting cover.

[0033] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0034] The present application will now be further described in detail with reference to the accompanying drawings.

[0035] Please refer to Figures 1 to 8The utility model provides a technical scheme: a blast furnace air volume adjusting device, including air supply pipe 1, main air outlet pipe 2, auxiliary air outlet pipe 4 and air volume adjusting pipe 5, the side flange of air supply pipe 1 is connected with main air outlet pipe 2, and the upper end of air supply pipe 1 is communicated with branch pipe 3, and the end flange of branch pipe 3 is connected with auxiliary air outlet pipe 4, and the upper end of main air outlet pipe 2 and auxiliary air outlet pipe 4 is all set up the accommodation of air volume adjusting pipe 5 installation's give place to groove, and the inside surface of main air outlet pipe 2 and auxiliary air outlet pipe 4 is set up the embedded groove of air volume adjusting pipe 5 bottom resistance, and air volume adjusting pipe 5 is fixed with main air outlet pipe 2 and auxiliary air outlet pipe 4 between through the limiting bolt 6, and the air outlet port of main air outlet pipe 2 and auxiliary air outlet pipe 4 can be connected with blast furnace air inlet port,

[0036] The middle part of air volume adjusting pipe 5 is fixed with the baffle 7, a plurality of air holes 8 are passed through and set up in the middle part of baffle 7, the middle part of two baffles 7 is installed with the rotating rod 9 through bearing 10, and the one end outside of rotating rod 9 is fixed with the driven gear 12 that engages with the drive gear 11, and the drive gear 11 is fixed and is connected in the output shaft outside of small -size motor 13, and small -size motor 13 is installed in the inside of machine case 14, and machine case 14 is fixed on the middle part one side upper end of baffle 7 through the L -shaped frame 15, and the inside of machine case 14 is equipped with the remote control module 16 for controlling small -size motor 13;

[0037] The other end outside of rotating rod 9 is installed with a plurality of cover vane 18 that covers air hole 8 through fixed peg 17, and the number of cover vane 18 matches the number of air hole 8;

[0038] The upper end of each air volume adjusting pipe 5 is fixed with digital display air volume appearance 19 through screw, and the monitoring end of digital display air volume appearance 19 is passed to the middle part of air volume adjusting pipe 5, and the one end of air supply pipe 1 is installed with first electromagnetic control valve 20 close to main air outlet pipe 2, considering that the comparative file can adjust the air volume size of blast furnace air outlet hole by replacing the customized air adjusting cylinder, but it cannot dynamically detect the current air volume, and every time adjustment needs manually to tighten or loosen the limiting bolt 6 step is fussy, the utility model passes through the setting air volume adjusting pipe 5 and plays the convenient detection of blast furnace air hole air supply air volume, and also can dynamically monitor the air supply air volume by digital display air volume appearance 19, and the air supply air volume will use cover vane 18 rotation adjustment to cover the area of air hole 8 to control, namely the staff in blast furnace control room control remote controller starts the switch of small -size motor 13, and the output shaft rotation drive gear 11 of small -size motor 13 drives driven gear 12 to rotate, makes rotating rod 9 rotate, at this time, cover vane 18 will adjust the area of air hole 8, and after adjusting to the angle needed, first electromagnetic control valve 20 is started, and the air volume enters multi -way pipe 31 from multiple injection end pipe and injects into the inside of telescopic air bag 34, and then telescopic air bag 34 expands and makes the abutment plate 35 contact with the surface of baffle 7, and the sealing is completed, effectively prevent the gap air leakage.

[0039] The middle part of the branch pipe 3 is provided with a second electromagnetic control valve 21. The first electromagnetic control valve 20 and the second electromagnetic control valve 21 are arranged to control the air supply pipe 1, so that the workers can conveniently maintain the air volume adjusting pipe 5. When the air volume adjusting pipe 5 of the main air outlet pipe 2 is maintained, the first electromagnetic control valve 20 is closed, the second electromagnetic control valve 21 is opened, and the air supply pipe 1 is not used to supply air to the blast furnace through the main air supply pipe 1, but through the auxiliary air supply pipe 1.

[0040] The lower end of the middle part of the partition plate 7 is fixedly provided with an L-shaped supporting piece 22. A groove is formed in the lifting end of the L-shaped supporting piece 22, and the middle part of the groove is provided with a ball 23 in contact with the side surface of the rotating rod 9. A groove body is formed in the upper surface of the horizontal end of the L-shaped supporting piece 22, and the groove body is fixedly provided with a mounting block 24. The mounting block 24 and the L-shaped supporting piece 22 are fixedly connected through a mounting bolt 25. The surface of the mounting block 24 is fixedly provided with a cleaning brush 26 used for cleaning the driven gear 12. The L-shaped supporting piece 22 and the ball 23 are arranged to support the outer side of the rotating rod 9. The cleaning brush 26 arranged on the upper end of the L-shaped supporting piece 22 is used to clean the surface of the driven gear 12, so that the particles in the air flow do not adhere to the surface of the gear and affect the transmission.

[0041] The middle part of the rotating rod 9 is provided with an air inlet channel. A third electromagnetic control valve 27 is arranged in the air inlet port of the rotating rod 9. The other end of the third electromagnetic control valve 27 is communicated with a mounting pipe 28. The outer surface of the mounting pipe 28 is provided with a filter cover 29. The middle part of the filter cover 29 is provided with a filter screen 30. The third electromagnetic control valve 27 is arranged to supply air to the inside of the multi-way pipe 31. The air supplied into the blast furnace enters the inside of the stretchable air bag 34. When the stretchable air bag 34 is inflated, the surface of the abutting plate 35 is in contact with the surface of the partition plate 7. Therefore, the gas cannot pass through the gap between the covering blade 18 and the partition plate 7. The covering plate makes the gas only pass through the ventilation hole 8. When the angle of the covering blade 18 is adjusted, the protruding abutting plate 35 is in contact with the partition plate 7, so that the covering blade 18 is fixed.

[0042] The other end of the air inlet channel is provided with a multi-way pipe 31. The tail end of the multi-way pipe 31 is an air outlet end 32. The middle part of the air outlet end 32 is provided with a fourth electromagnetic control valve 33. The middle part of the pipe body of the multi-way pipe 31 is provided with a plurality of gas injection end pipes in an annular array. The end of each gas injection end pipe penetrates into the inside of the covering blade 18 and is communicated with the air nozzle of the stretchable air bag 34 in the inside of the covering blade 18. One end of the stretchable air bag 34 is fixedly connected to the inner wall of the covering blade 18. The other end of the stretchable air bag 34 is fixedly connected to the surface of the abutting plate 35. The fourth electromagnetic control valve 33 is arranged to discharge the gas in the inside of the stretchable air bag 34, so that the rotating shaft is not difficult to rotate due to the abutting plate 35 during the surface rotating process.

[0043] The opposite surface of the covering blade 18 and the partition plate 7 is provided with a movable slot for the extension and contraction of the abutting plate 35, the number of the covering plates is consistent with the number of the air holes 8, the upper and lower ends of the covering plates are provided with guide holes for the penetration of the guide rods 36, and the guide rods 36 are fixed in the interior of the covering blade 18, and the extension and contraction of the abutting plate 35 is guided by the cooperation of the guide rods 36 and the guide holes.

[0044] The middle part of the two air volume adjusting pipes 5 is provided with a threaded groove matched with the external thread of the air collecting cover 37, and the air outlet of the air collecting cover 37 is located on one side of the monitoring end of the digital air volume meter 19, and the gas sent into the blast furnace is concentrated, so that the monitoring end of the digital air volume meter 19 on one side of the air collecting cover 37 obtains the air volume data.

[0045] The utility model is not limited to the above-mentioned embodiment, anyone should know the structural change made under the inspiration of the utility model, any technical scheme with the same or similar utility model falls into the protection scope of the utility model. The utility model is not described in detail, and the technical, shape and structure parts are known technology.

Claims

1. A blast furnace air volume adjusting device comprising a blast supply pipe (1), a main blast discharge pipe (2), a sub blast discharge pipe (4) and an air volume adjusting pipe (5), characterized in that, The side flange of the air supply pipe (1) is connected with the main air outlet pipe (2), the upper end of the air supply pipe (1) is communicated with the branch pipe (3), the end flange of the branch pipe (3) is connected with the auxiliary air outlet pipe (4), the upper end of the main air outlet pipe (2) and the auxiliary air outlet pipe (4) is provided with a slot for installing the air volume adjusting pipe (5), the inner surface of the main air outlet pipe (2) and the auxiliary air outlet pipe (4) is provided with an embedded groove for the bottom of the air volume adjusting pipe (5), the air volume adjusting pipe (5) is fixed with the main air outlet pipe (2) and the auxiliary air outlet pipe (4) through the limiting bolt (6), the air outlet port of the main air outlet pipe (2) and the auxiliary air outlet pipe (4) can be connected with the blast furnace air inlet port; The middle part of the air volume adjusting pipe (5) is fixed with the baffle (7), a plurality of ventilation holes (8) are provided in the middle part of the baffle (7), the middle parts of the two baffles (7) are rotatably provided with the rotating rod (9) through the bearing (10), the outer end of the rotating rod (9) is fixedly sleeved with the driven gear (12) engaged with the driving gear (11), the driving gear (11) is fixedly sleeved on the outer end of the output shaft of the small motor (13), the small motor (13) is installed in the inside of the cabinet (14), the cabinet (14) is fixed on the middle side upper end of the baffle (7) through the U-shaped frame (15), the inside of the cabinet (14) is provided with the remote control module (16) for controlling the small motor (13); The outer end of the other end of the rotating rod (9) is installed with a plurality of covering blades (18) covering the ventilation holes (8) through the fixed bolt (17), the number of the covering blades (18) matches the number of the ventilation holes (8); The upper end of each air volume adjusting pipe (5) is fixed with the digital air volume meter (19) through the screw, the monitoring end of the digital air volume meter (19) penetrates into the middle part of the air volume adjusting pipe (5), the end of the air supply pipe (1) close to the main air outlet pipe (2) is installed with the first electromagnetic control valve (20).

2. A blast furnace air flow regulating device according to claim 1, characterised in that The middle part of the branch pipe (3) is installed with the second electromagnetic control valve (21).

3. A blast furnace air flow regulating device according to claim 1, wherein The middle side lower end of the baffle (7) is fixed with the L-shaped supporting piece (22), the lifting end of the L-shaped supporting piece (22) is provided with a groove for placing the rotating rod (9), the middle part of the groove is installed with the ball (23) in contact with the side surface of the rotating rod (9), the horizontal end upper surface of the L-shaped supporting piece (22) is provided with a groove body for fixing the mounting block (24), the mounting bolt (25) between the mounting block (24) and the L-shaped supporting piece (22) is fixed, the surface of the mounting block (24) is fixed with the cleaning brush (26) for cleaning the driven gear (12).

4. A blast furnace air flow regulating device according to claim 1, wherein The middle part of the rotating rod (9) is provided with an air inlet channel, the air inlet port of the rotating rod (9) is installed with the third electromagnetic control valve (27), the other end of the third electromagnetic control valve (27) is communicated with the installation pipe (28), and the outer end of the installation pipe (28) is installed with the filter cover (29), the middle part of the filter cover (29) is provided with the filter screen (30).

5. A blast furnace air flow regulating device according to claim 4, characterised in that The middle part of the other end of the air inlet channel is provided with a multi-way pipe (31), the tail end of the multi-way pipe (31) is an air exhaust end (32), the middle part of the air exhaust end (32) is provided with a fourth electromagnetic control valve (33), the middle part of the pipe body of the multi-way pipe (31) is provided with a plurality of gas injection end pipes in an annular array, the end of each gas injection end pipe penetrates into the inside of the covering blade (18) and communicates with the air nozzle of the telescopic air bag (34) in the inside of the covering blade (18), one end of the telescopic air bag (34) is fixed to the inner side wall of the covering blade (18), and the other end of the telescopic air bag (34) is fixed to the surface of the abutting plate (35).

6. A blast furnace air flow regulating device according to claim 5, wherein The opposite surface of the covering blade (18) and the partition plate (7) is provided with a movable slot for the telescoping of the abutting plate (35), the number of the covering plates is consistent with the number of the air vents (8), the upper and lower ends of the covering plates are provided with guide holes for the penetration of guide rods (36), and the guide rods (36) are fixed in the inside of the covering blade (18).

7. A blast furnace air flow regulating device according to claim 1, wherein The middle part of each of the two air volume adjusting pipes (5) is provided with a threaded groove matched with the external thread of the wind collecting cover (37), and the air outlet of the wind collecting cover (37) is located on one side of the monitoring end of the digital air volume meter (19).

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