CN117210628A - Manganese-containing coal powder injection device of blast furnace - Google Patents
Manganese-containing coal powder injection device of blast furnace Download PDFInfo
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- CN117210628A CN117210628A CN202311365414.XA CN202311365414A CN117210628A CN 117210628 A CN117210628 A CN 117210628A CN 202311365414 A CN202311365414 A CN 202311365414A CN 117210628 A CN117210628 A CN 117210628A
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- blast furnace
- coal injection
- spring
- groove
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- 239000003245 coal Substances 0.000 title claims abstract description 110
- 238000002347 injection Methods 0.000 title claims abstract description 109
- 239000007924 injection Substances 0.000 title claims abstract description 109
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 30
- 239000011572 manganese Substances 0.000 title claims abstract description 30
- 239000000843 powder Substances 0.000 title description 4
- 239000004579 marble Substances 0.000 claims abstract description 25
- 210000000078 claw Anatomy 0.000 claims description 19
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000006378 damage Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract 1
- 244000309464 bull Species 0.000 abstract 1
- 208000014674 injury Diseases 0.000 abstract 1
- 238000000034 method Methods 0.000 description 20
- 230000008569 process Effects 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 239000002893 slag Substances 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 8
- 230000009471 action Effects 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 238000009628 steelmaking Methods 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011538 cleaning material Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Furnace Charging Or Discharging (AREA)
Abstract
The invention belongs to the technical field of injection devices, in particular to a blast furnace manganese-containing pulverized coal injection device, which comprises a plurality of marble valves fixedly connected to the outer surface of the blast furnace, and further comprises: the coal injection gun is movably inserted on the ball valve; the cylinder valve comprises a shell, a flange, a first port, a second port, a fixed seat, a rotating rod, a valve cover and a first spring, wherein the shell is fixedly connected with the flange, the flange is fixedly connected with the blast furnace, the fixed seat is arranged in the shell, one end of the rotating rod is connected with the fixed seat, the valve cover is connected to the lower surface of the rotating rod, one end of the first spring is connected with the rotating rod, and the other end of the first spring is connected with the shell; through setting up the marble valve, avoided in the stove high temperature gas blowout to cause the injury to operating personnel, and the bull stick and the first spring size that link to each other with the valve gap are all great, can be better adapt to the high temperature in the stove, prolonged the life of device.
Description
Technical Field
The invention belongs to the field of injection devices, and particularly relates to a manganese-containing pulverized coal injection device for a blast furnace.
Background
When the blast furnace is used for refining coke and non-main stream lump ores, the influence of the characteristics and quality of the coke and the non-main stream lump ores is caused, after the blast furnace is used for a long time, the ventilation and liquid permeability of a dead material column in the center of a hearth is poor, the temperature of a furnace core belt is reduced, slag iron entering the furnace core belt is sticky and cannot smoothly drop, after the time, the air quantity in the furnace is atrophic, the integral blasting kinetic energy is insufficient, the edge of the hearth is accumulated, an air port sleeve is frequently damaged and leaked, the working state of the hearth is further deteriorated, the hearth is accumulated more seriously, and in this case, a furnace cleaning material is required to be fed into the furnace through a blowing device to remove the accumulation.
One patent application with publication number of CN112240398A discloses a ball valve with good sealing performance, which comprises a valve body and a pulverized coal spray gun, wherein a flange connection disc for fixing a blast furnace is arranged on the side surface of the valve body, a cover plate is arranged on the other side of the valve body, the pulverized coal spray gun can be inserted into the valve body from the cover plate, a positioning valve seat is arranged in the middle of an inner cavity of the valve body, a valve groove is formed in the middle of the positioning valve seat, the valve groove consists of a conical groove and a cylindrical groove, and a spray gun insertion pipe is arranged on one side, far away from the flange connection disc, of the positioning valve seat.
According to the scheme, the track of the ball is controlled by pulling the stainless steel wire, so that the effect of controlling the switch of the ball valve is achieved, but the temperature in the blast furnace is higher, the stainless steel wire is thinner than the ball, and after the stainless steel wire is used for a long time, the stainless steel wire is easy to damage, and the service life is shorter.
Therefore, the invention provides a manganese-containing pulverized coal injection device for a blast furnace.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a blast furnace manganese-containing pulverized coal injection device, which comprises a plurality of marble valves fixedly connected to the outer surface of a blast furnace, wherein the marble valves are communicated with the blast furnace, a plurality of marble valves are distributed on the outer surface of the blast furnace in an annular array manner, and the blast furnace manganese-containing pulverized coal injection device further comprises: the coal injection gun is movably inserted on the ball valve; the ball valve comprises a shell, a fixed seat, a rotating rod, a valve cover and a first spring, wherein the shell is fixedly connected with the blast furnace, a first port and a second port are respectively formed in two ends of the shell, the inner diameter of the second port is consistent with the outer diameter of the coal injection gun, the second port is communicated with the blast furnace, the fixed seat is fixedly arranged in the shell, one end of the rotating rod is rotatably connected with the fixed seat, the valve cover is fixedly connected with the lower surface of the rotating rod, which is far away from the fixed seat, the valve cover is used for blocking the first port, the first spring is used for pushing the rotating rod to deflect downwards, the blast furnace is in the steelmaking process, when a hearth temperature measuring couple detects a stacking phenomenon, the coal injection gun is started to inject manganese-containing coal powder into the blast furnace, after manganese is reduced, the manganese part enters molten iron, the slag is reduced, the other part enters the slag viscosity of the blast furnace, the purpose of reducing the slag viscosity is achieved, and when the coal injection gun is pulled out, the valve cover is subjected to self gravity and the first spring is rotated to block the first port, and the first spring is automatically blocked.
Preferably, the device further comprises a safeguard part, the safeguard part comprising: the sliding groove is formed in the valve cover, a first spring is arranged in the sliding groove, and one end of the first spring is fixedly connected with the sliding groove; the first hook claw assembly is installed on the sliding groove and comprises a first rod, an L-shaped rod and a torsion spring, the first rod is connected to the sliding groove in a sliding mode, one side, close to the fixing seat, of the first rod is fixedly connected with the first spring, the L-shaped rod is connected to the first rod in a rotating mode, and the torsion spring is arranged on the L-shaped rod; and a first groove formed in the outer wall of the coal injection gun, which is close to one side of the second opening.
Preferably, the first hook component further comprises: the inclined surface of the first trapezoid block is positioned at the outer side of the L-shaped rod; install No. two springs in the L shape pole, no. two one end of spring with trapezoidal piece is connected, no. two other end of spring with L shape pole fixed connection.
Preferably, the first trapezoid block is provided with a second groove, the guarantee part further comprises a plug-in assembly, and the plug-in assembly comprises: the first plate is hinged in the first groove; the first plate is connected with the second plate in a sliding manner, and the first plate is connected with the second plate through a spring; and a plurality of triangular blocks which are connected to the second plate in a sliding way, wherein springs are connected between the triangular blocks and the second plate.
Preferably, the plug assembly further comprises: a third plate which is in sliding connection with the first groove, and a plurality of third springs are arranged between the third plate and the coal injection gun; the expansion plate hinged to the second plate is hinged to the third plate at one end, far away from the second plate, of the expansion plate.
Preferably, the first groove is annular, and the plugging component is annularly enclosed on the periphery of the outer wall of the coal injection gun.
Preferably, the guarantee portion further includes a second hook component, and the second hook component includes: a third groove arranged below the first opening, wherein the third groove is an inclined groove; the hook-shaped plate is connected in the third groove in a sliding way; and the first rack plate is rotationally connected with one end of the hook-shaped plate, which is far away from the second port.
Preferably, the guarantee unit further includes: the round door is rotationally connected to the outer side of the first port; a round rod connected to the round door in a rotating way; and the second rack plate is in sliding connection with the first rack plate in the third groove.
Preferably, the guarantee unit further includes: an observation hole formed in the housing; a cavity arranged in the fixed seat; the second trapezoid block is slidably connected to the rotating rod and is positioned in the cavity, and a fourth spring is arranged between the second trapezoid block and the rotating rod; the third port is arranged on the fixing part and is communicated with the cavity.
Preferably, the width of the third opening is identical to the width of the second trapezoid block, and the color of the second trapezoid block is different from the color of the fixing seat.
The beneficial effects of the invention are as follows:
1. according to the blast furnace manganese-containing pulverized coal injection device, the marble valve is arranged, so that the damage to operators caused by high-temperature gas injection in the blast furnace is avoided, the rotating rod and the first spring connected with the valve cover are large in size, the blast furnace manganese-containing pulverized coal injection device can be better adapted to the high temperature in the blast furnace, and the service life of the blast furnace manganese-containing pulverized coal injection device is prolonged.
2. According to the manganese-containing pulverized coal injection device for the blast furnace, the first hook claw assembly is arranged, the first trapezoid block is inserted into the first groove of the coal injection gun in the process of pulling out the coal injection gun, and the valve cover is driven to rotate along with the movement of the coal injection gun, so that the valve cover can block the first opening in the process of pulling out the coal injection gun, when the nozzle of the coal injection gun is positioned at the first opening, the valve cover blocks the first opening, the L-shaped rod is positioned at the highest position, the L-shaped rod is in a vertical state with the coal injection gun, and when the coal injection gun continues to move, the first hook claw assembly can be automatically separated from the first groove and restored to an initial state, and the valve cover is ensured to be automatically separated under the condition that the pulling of the gun is not influenced after the valve cover is blocked.
3. According to the manganese-containing pulverized coal injection device for the blast furnace, the plugging component is arranged, when the first trapezoid block moves downwards to enter the first groove, the plugging component is connected with the first trapezoid block, the possibility that the first trapezoid block is separated from the first groove in the moving process of the pulverized coal injection gun is reduced, the valve cover is further ensured to work normally, when the muzzle of the pulverized coal injection gun is positioned at the first mouth, the valve cover plugs the first mouth, the L-shaped rod is positioned at the highest position, when the L-shaped rod is in a vertical state with the pulverized coal injection gun, the pulverized coal injection gun continues to move, the first trapezoid block extrudes the third plate to move to a position close to the muzzle of the pulverized coal injection gun, and the third plate moves to enable the plugging component to be separated from the second groove automatically, so that the pulverized coal injection gun is separated automatically under the condition that the pulverized coal injection gun is not influenced.
4. According to the manganese-containing pulverized coal injection device for the blast furnace, the second hook claw assembly is arranged, after the coal injection gun is pulled out of the marble valve, the first opening is blocked by rotating the round door, the round door is fixed by rotating the round rod, the round door is contacted with the second rack plate in the rotating process and pushes the second rack plate to move into the marble valve, the second rack plate moves to drive the first rack plate to move, the first rack plate is pulled, the hook plate is driven to move along the inclined edge of the third groove, and the hook plate gradually approaches to the L-shaped rod until the hook plate is clung to the L-shaped rod in the moving process, so that the blocking effect of the valve cover is better.
5. According to the manganese-containing pulverized coal injection device for the blast furnace, the observation hole is formed, when the coal injection gun is pulled out of the marble valve, the first opening is firmly blocked by the valve cover, the second trapezoid block rotates to the lower portion of the third opening and is subjected to the action of spring elastic force, the second trapezoid block slides out of a part of the third opening under the action of spring elastic force, if the valve cover cannot block the first opening, the second trapezoid block cannot be exposed from the third opening, and after the coal injection gun is pulled out, the second trapezoid block can be observed from the observation hole to judge whether the first opening is firmly blocked.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of a first embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a cross-sectional view of the housing of the present invention;
FIG. 4 is a cross-sectional view of the cylinder valve of the present invention;
FIG. 5 is a partial cutaway view of a coal injection gun and a first hook assembly of the present invention
FIG. 6 is an enlarged view of a portion of FIG. 5 at B;
FIG. 7 is a schematic view of a first hook component of the present invention;
FIG. 8 is a partial cutaway view of the plug assembly of the present invention;
FIG. 9 is a partial cutaway view of a first trapezoidal block according to the present invention;
FIG. 10 is a cross-sectional view of a holder of the present invention;
in the figure: 1. a blast furnace; 2. a ball valve; 21. a housing; 23. a first port; 24. a second port; 25. a fixing seat; 26. a rotating rod; 27. a valve cover; 28. a first spring; 3. a coal injection gun; 4. a guarantee part; 41. a chute; 42. a first spring; 43. a first hook claw component; 431. a first rod; 432. an L-shaped rod; 433. a torsion spring; 434. a first trapezoid block; 435. a second spring; 44. a first groove; 45. a second groove; 46. a plug assembly; 461. a first plate; 462. a second plate; 463. triangular blocks; 464. a third plate; 465. a telescoping plate; 466. a third spring; 47. a second hook claw component; 471. a third groove; 472. a hook-shaped plate; 473. a first rack plate; 48. a round door; 49. a round bar; 410. a second rack plate; 411. an observation hole; 412. a cavity; 413. a second trapezoid block; 414. a spring IV; 415. and a third port.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Example 1
As shown in fig. 1 to 10, the device for injecting pulverized coal containing manganese in a blast furnace according to the embodiment of the invention comprises a plurality of marble valves 2 fixedly connected to the outer surface of the blast furnace 1, wherein the marble valves 2 are communicated with the blast furnace 1, and a plurality of marble valves 2 are distributed on the outer surface of the blast furnace 1 in an annular array, and further comprises: a coal injection gun 3 movably inserted on the ball valve 2; the ball valve 2 comprises a shell 21, a fixed seat 25, a rotating rod 26, a valve cover 27 and a first spring 28, wherein the shell 21 is fixedly connected with the blast furnace 1, a first opening 23 and a second opening 24 are respectively formed in two ends of the shell 21, the inner diameter of the second opening 24 is consistent with the outer diameter of the coal injection gun 3, the second opening 24 is communicated with the blast furnace 1, the fixed seat 25 is fixedly installed in the shell 21, one end of the rotating rod 26 is rotatably connected with the fixed seat 25, the valve cover 27 is fixedly connected with the lower surface of the rotating rod 26, which is far away from the fixed seat 25, the valve cover 27 is used for blocking the first opening 23, and the first spring 28 is used for pushing the rotating rod 26 to deflect downwards.
Specifically, be equipped with the hearth temperature measurement thermocouple on the blast furnace 1, blast furnace 1 is in steelmaking in-process, the slag iron that produces can adhere on blast furnace 1 inner wall, slag iron pile-up state in blast furnace 1 is detected through hearth temperature measurement thermocouple, before the work, insert coal injection rifle 3 from marble valve 2's No. one mouth 23 right, coal injection rifle 3's muzzle enters into blast furnace 1 from marble valve 2's No. two mouths 24, the in-process of inserting, valve gap 27 receives the thrust of coal injection rifle 3 upwards to rotate, at this moment first spring 28 receives the extrusion, manganese powder and the buggy after the manganese ore is according to proportion in coal injection rifle 3 (time and severity ratio that the visible hearth piles up are adjusted), blast furnace 1 is in the steelmaking in-process, when hearth temperature measurement thermocouple detects pile-up phenomenon, according to pile-up the condition, will contain fierce buggy to the blast furnace 1 in, the inner chemical reaction of blast furnace 1 is produced to manganese powder, slag iron is reduced, reach the slag iron, when the automatic purpose of drawing out of blast furnace 3, the spring 27 receives the high temperature spring 26 and the high temperature of the valve gap has been avoided the valve gap to be blown out by oneself, the valve gap is greatly to the size of valve gap 26 has been even more suitable for the personnel, and the valve gap has been reached, the valve gap is greatly prolonged, and the device has been blown out by the valve gap spring has been used to the valve gap has been blown out and has been used to the valve gap valve spring 26 has been better the valve spring has been blown and has been used to the valve spring and has been moved and has been rolled.
As shown in fig. 2 to 7, the apparatus further includes a securing part 4, and the securing part 4 includes: the sliding groove 41 is formed in the valve cover 27, a first spring 42 is arranged in the sliding groove 41, and one end of the first spring 42 is fixedly connected with the sliding groove 41; the first hook claw assembly 43 installed on the sliding chute 41, the first hook claw assembly 43 comprises a first rod 431, an L-shaped rod 432 and a torsion spring 433, the first rod 431 is slidably connected to the sliding chute 41, one side of the first rod 431 close to the fixing seat 25 is fixedly connected with the first spring 42, the L-shaped rod 432 is rotatably connected to the first rod 431, and the L-shaped rod 432 is provided with the torsion spring 433; a first groove 44 is formed on the outer wall of the coal injection gun 3 near the side of the second port 24.
Specifically, in the initial state, the first hook component 43 is tightly attached to the outer wall of the coal injection gun 3, the first spring 28 is in a compressed state, the first groove 44 moves leftwards in the process of pulling out the coal injection gun 3, when the first groove 44 moves to the lower part of the first hook component 43, the L-shaped rod 432 moves downwards to enter the first groove 44 under the elasticity of the first spring 28, the first hook component 43 hooks the first groove 44, the valve cover 27 is driven to rotate downwards by the first hook component 43 in the process of moving leftwards of the coal injection gun 3 until the valve cover 27 blocks the first opening, and by arranging the first hook component 43, the valve cover 27 can further block the first opening 23 in the process of pulling out the coal injection gun 3.
As shown in fig. 7, the first hook component 43 further includes: a first trapezoid block 434 slidably coupled within the L-shaped bar 432, the diagonal surface of the first trapezoid block 434 being located outside the L-shaped bar 432; and a second spring 435 installed in the L-shaped bar 432, wherein one end of the second spring 435 is connected with the first trapezoid block 434, and the other end of the second spring 435 is fixedly connected with the L-shaped bar 432.
Specifically, when the first groove 44 is located below the first hook component 43, the L-shaped rod 432 and the first trapezoid block 434 are moved downward by the elastic force of the first spring 28, the first trapezoid block 434 enters the first groove 44, the first rod 431 moves along the chute 41 along with the movement of the coal injection gun 3, the L-shaped rod 432 moves and rotates, the first hook component 43 moves to drive the valve cover 27 to move, when the muzzle of the coal injection gun 3 is located at the first opening 23, the valve cover 27 blocks the first opening 23, the coal injection gun 3 continues to move, the inclined plane of the first trapezoid block 434 contacts with the first groove 44 of the coal injection gun 3, the first trapezoid block 434 is extruded by the coal injection gun 3, the first trapezoid block 434 moves upward until the first trapezoid block 434 is separated from the first groove 44, the coal injection gun 3 continues to be pulled out from the first opening 23, the first trapezoid block 434 and the first rod 431 are subjected to the elastic force of the first spring 42 and the second spring 435, and the initial state is restored, and the first hook component 434 can be separated from the first groove 44 smoothly, and the first hook component 43 can be separated from the first groove 23 from the first groove 44 smoothly.
As shown in fig. 8, the first trapezoid block 434 is provided with a second groove 45, the guaranteeing part 4 further includes a plugging assembly 46, and the plugging assembly 46 includes: a first plate 461 hinged in the first recess 44; a second plate 462 slidably connected to the first plate 461, wherein the first plate 461 is connected to the second plate 462 by a spring; and a plurality of triangular blocks 463 which are connected with the second plate 462 in a sliding manner, wherein springs are connected between the triangular blocks 463 and the second plate 462.
Specifically, when the first groove 44 moves below the first hook component 43, the first trapezoid block 434 moves downward into the first groove 44, the coal injection gun 3 continues to move, the first trapezoid block 434 contacts with the plug component 46, the triangle block 463 on the second plate 462 is extruded and slid by the first trapezoid block 434 until the triangle block 463 enters the second groove 45, the triangle block 463 is restored to the initial state by the spring force, and at the moment, the plug component 46 is connected with the first trapezoid block 434, and by arranging the plug component 46, the possibility that the first trapezoid block 434 is separated from the first groove 44 in the moving process of the coal injection gun 3 is reduced, so that the valve cover 27 can work normally is further ensured.
As shown in fig. 8, the plug assembly 46 further includes: a third plate 464 slidably connected in the first recess 44, wherein a plurality of third springs 466 are arranged between the third plate 464 and the coal injection gun 3; a telescoping plate 465 hinged to the second plate 462, the end of the telescoping plate 465 remote from the second plate 462 being hinged to the third plate 464.
Specifically, when the muzzle of the coal injection gun 3 is located at the muzzle 23, the valve cover 27 blocks the muzzle 23, the expansion plate 465 is at a contracted pole, the second plate 462 is at an expanded pole, when the coal injection gun 3 continues to move, the first trapezoid block 434 extrudes the third plate 464 to move to a position close to the muzzle of the coal injection gun 3, the third plate 464 moves to drive the expansion plate 465 to move, the expansion plate 465 moves to drive the first plate 461 to move with the second plate 462, the third plate 464 continues to move, the plug assembly 46 is separated from the second groove 45, when the coal injection gun 3 continues to move, the inclined surface of the first trapezoid block 434 is in contact with the third plate 464, the first trapezoid block 434 moves upwards until the first trapezoid block 434 is separated from the first groove 44, and the third plate 464 is arranged, so that the triangle block 463 can be separated from the second groove 45.
As shown in fig. 3, the first groove 44 is annular, and the plugging assembly 46 surrounds the outer wall of the coal injection gun 3 in a ring shape.
Specifically, through setting up annular groove and grafting subassembly 46, coal injection rifle 3 inserts with any rotation angle and can make grafting subassembly 46 and the normal work of a hook claw subassembly 43, and the practicality is strong.
As shown in fig. 6, the guaranteeing part 4 further includes a second hook assembly 47, and the second hook assembly 47 includes: a third groove 471 arranged below the first opening 23, the third groove 471 being an inclined groove; a hook plate 472 slidably connected to the third groove 471; a first rack plate 473 rotatably connected to an end of the hook plate 472 remote from the second port 24.
Specifically, when the coal injection gun 3 comes out from the first opening 23, the valve cover 27 blocks the first opening 23, at this time, the L-shaped rod 432 is tightly attached to the first opening 23 and is perpendicular to the contact surface, the first rack plate 473 is pulled to drive the hook plate 472 to move along the oblique side of the third groove 471, and the hook plate 472 gradually approaches the L-shaped rod 432 until the hook plate 472 is tightly attached to the L-shaped rod 432 in the moving process of the hook plate 472, so that the blocking effect of the valve cover 27 is better.
As shown in fig. 4 and 7, the safeguard part 4 further includes: a round door 48 rotatably connected to the outside of the first port 23; a round bar 49 rotatably connected to the round door 48; and the second rack plate 410 is slidably connected in the third groove 471, and the second rack plate 410 is in meshed connection with the first rack plate 473.
Specifically, after the coal injection gun 3 is pulled out from the marble valve 2, the round door 48 is rotated to block the first opening 23, the round door 48 is fixed by the round rod 49, the round door 48 contacts with the second rack plate 410 in the rotating process and pushes the second rack plate 410 to move towards the marble valve 2, the second rack plate 410 moves to drive the first rack plate 473 to move, the first rack plate 473 is pulled to drive the hook plate 472 to move along the inclined edge of the third groove 471 until the round door 48 is fixed, at this time, the hook plate 472 is clung to the L-shaped rod 432, and the second hook claw assembly 47 is driven to move by setting the manual rotation round door 48, so that the structure is simple and the cost is low.
As shown in fig. 2 and 9, the safeguard part 4 further includes: a viewing hole 411 formed in the housing 21; a cavity 412 formed in the fixing base 25; a second trapezoid block 413 slidably connected to the rotating rod 26, where the second trapezoid block 413 is located in the cavity 412, and a fourth spring 414 is disposed between the second trapezoid block 413 and the rotating rod 26; and a third port 415 formed on the fixing, wherein the third port 415 is communicated with the cavity 412, and the third port 415 is aligned with the observation hole 411.
Specifically, when the observation hole 411 is made of transparent high-temperature and high-pressure resistant glass, the fourth spring 414 is in a tight state, the second trapezoid block 413 is located in the cavity 412, when the coal injection gun 3 moves leftwards from the second port 24, the rotary rod 26 rotates to drive the second trapezoid block 413 to rotate towards the direction close to the third port 415, when the coal injection gun 3 is pulled out from the marble valve 2, the second trapezoid block 413 rotates to the lower part of the third port 415 and is subjected to the action of spring force when the first port 23 is firmly blocked by the valve cover 27, a part of the second trapezoid block 413 slides out of the third port 415, if the first port 23 cannot be blocked by the valve cover 27, the second trapezoid block 413 cannot be exposed from the third port 415, and after the coal injection gun 3 is pulled out, whether the first port 23 is firmly blocked or not can be judged by observing the second trapezoid block 413 from the observation hole 411.
Example two
As shown in fig. 10, in comparative example one, another embodiment of the present invention is: the width of the third opening 415 is identical to the width of the second trapezoid block 413, and the color of the second trapezoid block 413 is different from the color of the fixing seat 25.
Specifically, by setting different colors, whether the first port 23 is blocked or not can be clearly and clearly observed at the observation port, and the observation effect is good.
The working steps are as follows:
step one, when the blast furnace 1 is used for steelmaking, the coal injection gun 3 is inserted from the first port 23 of the marble valve 2, the muzzle of the coal injection gun 3 enters the blast furnace 1 from the second port 24 of the marble valve 2, in the inserting process, the valve cover 27 is rotated upwards by the thrust of the coal injection gun 3, at the moment, the first spring 28 is extruded, manganese-containing coal powder is proportionally added into the coal injection gun 3, in the working process, when a hearth temperature measuring thermocouple detects the accumulation phenomenon, all or part of the coal injection gun 3 is started to perform uniform injection, after manganese participates in chemical reaction, part of manganese metal enters molten iron, the viscosity of the molten iron is reduced, and the other part of manganese metal enters slag, so that the viscosity of the slag is reduced, and the aim of washing the furnace is fulfilled;
step two, in an initial state, the first hook claw assembly 43 is tightly attached to the outer wall of the coal injection gun 3, the first spring 28 is in a compressed state, the first groove 44 moves leftwards in the process of pulling out the coal injection gun 3, when the first groove 44 is positioned below the first hook claw assembly 43, the L-shaped rod 432 and the first trapezoid block 434 move downwards under the elasticity of the first spring 28, and the first trapezoid block 434 enters the first groove 44;
step three, the coal injection gun 3 continues to move, the first trapezoid block 434 is contacted with the plug-in component 46, the triangle block 463 on the second plate 462 is extruded and slid by the trapezoid block until the triangle block 463 enters the second groove 45, the triangle block 463 is restored to the initial state by spring force, and at the moment, the plug-in component 46 is connected with the first trapezoid block 434;
step four, the valve cover 27 is driven to rotate downwards by the first hook claw assembly 43 until the valve cover 27 blocks the first port in the left moving process of the coal injection gun 3, and the first hook claw assembly 43 is arranged to further ensure that the valve cover 27 can block the first port 23 in the pulling process of the coal injection gun 3;
step five, when the muzzle of the coal injection gun 3 is positioned at the muzzle 23, the valve cover 27 plugs the muzzle 23, the expansion plate 465 is at a contracted pole, the second plate 462 is at an expanded pole, when the coal injection gun 3 continues to move, the first trapezoid block 434 extrudes the third plate 464 to move towards the position close to the muzzle of the coal injection gun 3, the third plate 464 moves to drive the expansion plate 465 to move, the expansion plate 465 moves to drive the first plate 461 to move with the second plate 462, the third plate 464 continues to move, the plug assembly 46 is separated from the second groove 45, when the coal injection gun 3 continues to move, the inclined surface of the first trapezoid block 434 is contacted with the third plate 464, and the first trapezoid block 434 moves upwards until the first trapezoid block 434 is separated from the first groove 44 under the reaction force of the third plate 464;
step six, after the coal injection gun 3 is pulled out of the marble valve 2, the round door 48 is rotated to block the first opening 23, the round rod 49 is rotated to fix the round door 48, the round door 48 contacts with the second rack plate 410 in the rotating process and pushes the second rack plate 410 to move towards the marble valve 2, the second rack plate 410 moves to drive the first rack plate 473 to move, the first rack plate 473 is pulled to drive the hook plate 472 to move along the inclined edge of the third groove 471 until the round door 48 is fixed, and at the moment, the hook plate 472 is clung to the L-shaped rod 432, so that the blocking effect of the valve cover 27 is better;
step seven, when the coal injection gun 3 moves leftwards from the second port 24, the rotary rod 26 rotates to drive the second trapezoid block 413 to rotate towards the direction close to the third port 415, when the coal injection gun 3 is pulled out from the marble valve 2, the second trapezoid block 413 rotates to the lower part of the third port 415 under the action of spring elastic force when the valve cover 27 is used for perfectly blocking the first port 23, a part of the second trapezoid block 413 slides out of the third port 415, if the valve cover 27 cannot block the first port 23, the second trapezoid block 413 cannot be exposed from the third port 415, and after the coal injection gun 3 is pulled out, the second trapezoid block 413 can be observed from the observation hole 411 to judge whether the first port 23 is blocked.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a blast furnace manganese-containing pulverized coal injection device, includes a plurality of fixed connection in marble valve (2) of blast furnace (1) surface, marble valve (2) and blast furnace (1) intercommunication, a plurality of marble valve (2) annular array distributes the surface of blast furnace (1), still includes:
a coal injection gun (3) movably inserted on the ball valve (2);
the ball valve (2) comprises a shell (21), a fixed seat (25), a rotating rod (26), a valve cover (27) and a first spring (28), wherein the shell (21) is fixedly connected with the blast furnace (1), a first opening (23) and a second opening (24) are respectively formed in two ends of the shell (21), the inner diameter of the second opening (24) is consistent with the outer diameter of the coal injection gun (3), the second opening (24) is communicated with the blast furnace (1), the fixed seat (25) is fixedly installed in the shell (21), one end of the rotating rod (26) is rotationally connected with the fixed seat (25), the valve cover (27) is fixedly connected with the lower surface of the rotating rod (26) away from the fixed seat (25), the valve cover (27) is used for blocking the first opening (23), and the first spring (28) is used for pushing the rotating rod (26) to deflect downwards.
2. The blast furnace manganese-containing pulverized coal injection device according to claim 1, wherein: still include guarantee portion (4), guarantee portion (4) includes:
a sliding groove (41) arranged on the valve cover (27), a first spring (42) is arranged in the sliding groove (41), and one end of the first spring (42) is fixedly connected with the sliding groove (41);
the first hook claw assembly (43) is arranged on the sliding groove (41), the first hook claw assembly (43) comprises a first rod (431), an L-shaped rod (432) and a torsion spring (433), the first rod (431) is slidably connected to the sliding groove (41), one side, close to the fixing seat (25), of the first rod (431) is fixedly connected with the first spring (42), the L-shaped rod (432) is rotatably connected to the first rod (431), and the L-shaped rod (432) is provided with the torsion spring (433);
and a first groove (44) formed on the outer wall of one side of the coal injection gun (3) close to the second opening (24).
3. The blast furnace manganese-containing pulverized coal injection device according to claim 2, wherein: the first hook claw assembly (43) further comprises:
a first trapezoid block (434) slidably connected within the L-shaped bar (432), the diagonal surface of the first trapezoid block (434) being located outside the L-shaped bar (432);
and a second spring (435) arranged in the L-shaped rod (432), wherein one end of the second spring (435) is connected with the first trapezoid block (434), and the other end of the second spring (435) is fixedly connected with the L-shaped rod (432).
4. A blast furnace manganese-containing pulverized coal injection device according to claim 3, wherein: a second groove (45) is formed in the first trapezoid block (434), the guaranteeing part (4) further comprises a plug-in component (46), and the plug-in component (46) comprises:
a first plate (461) hinged in the first groove (44);
a second plate (462) slidably connected to the first plate (461), wherein the first plate (461) is connected to the second plate (462) through a spring;
and a plurality of triangular blocks (463) which are connected to the second plate (462) in a sliding manner, wherein springs are connected between the triangular blocks (463) and the second plate (462).
5. The manganese-containing pulverized coal injection device for a blast furnace according to claim 4, wherein: the plug assembly (46) further includes:
a third plate (464) which is slidably connected in the first groove (44), wherein a plurality of third springs (466) are arranged between the third plate (464) and the coal injection gun (3);
and the telescopic plate (465) is hinged to the second plate (462), and one end, far away from the second plate (462), of the telescopic plate (465) is hinged to the third plate (464).
6. The blast furnace manganese-containing pulverized coal injection device according to claim 5, wherein: the first groove (44) is annular, and the plugging component (46) is annularly surrounded on the periphery of the outer wall of the coal injection gun (3).
7. The blast furnace manganese-containing pulverized coal injection device according to claim 2, wherein: the guarantee portion (4) further comprises a second hook claw assembly (47), and the second hook claw assembly (47) comprises:
a third groove (471) arranged below the first opening (23), wherein the third groove (471) is an inclined groove;
a hook-shaped plate (472) which is connected in the third groove (471) in a sliding way;
and the first rack plate (473) is rotatably connected with one end, far away from the second opening (24), of the hook-shaped plate (472).
8. The blast furnace manganese-containing pulverized coal injection device according to claim 7, wherein: the guarantee unit (4) further comprises:
a round door (48) rotatably connected to the outer side of the first port (23);
a round rod (49) rotatably connected to the round door (48);
and the second rack plate (410) is slidably connected in the third groove (471), and the second rack plate (410) is in meshed connection with the first rack plate (473).
9. The blast furnace manganese-containing pulverized coal injection device according to claim 2, wherein: the guarantee unit (4) further comprises:
an observation hole (411) formed in the case (21);
a cavity (412) formed in the fixing seat (25);
a second trapezoid block (413) which is connected to the rotating rod (26) in a sliding manner, wherein the second trapezoid block (413) is positioned in the cavity (412), and a fourth spring (414) is arranged between the second trapezoid block (413) and the rotating rod (26);
and the third port (415) is arranged on the fixing part, the third port (415) is communicated with the cavity (412), and the observation hole (411) is aligned with the third port (415).
10. The blast furnace manganese-containing pulverized coal injection device according to claim 9, wherein: the width of the third opening (415) is consistent with the width of the second trapezoid block (413), and the color of the second trapezoid block (413) is different from the color of the fixing seat (25).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311365414.XA CN117210628B (en) | 2023-10-20 | 2023-10-20 | Manganese-containing coal powder injection device of blast furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311365414.XA CN117210628B (en) | 2023-10-20 | 2023-10-20 | Manganese-containing coal powder injection device of blast furnace |
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| CN117210628B CN117210628B (en) | 2024-07-19 |
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| CN112240398A (en) * | 2020-11-02 | 2021-01-19 | 朱少文 | Ball valve with good sealing performance |
| CN112324922A (en) * | 2020-11-02 | 2021-02-05 | 朱少文 | Ball valve for blast furnace coal injection gun |
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| CN215050432U (en) * | 2021-04-09 | 2021-12-07 | 首钢长治钢铁有限公司 | Improved blast furnace coal injection gun clip |
| CN215806535U (en) * | 2021-05-26 | 2022-02-11 | 唐山金山腾宇科技有限公司 | Ball valve |
| CN217733167U (en) * | 2022-06-08 | 2022-11-04 | 漯河鑫世通冶金设备有限公司 | Ball valve for spray gun |
| CN219159621U (en) * | 2022-12-01 | 2023-06-09 | 启东远大阀门有限公司 | Ball valve of coal injection gun |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240398A (en) * | 2020-11-02 | 2021-01-19 | 朱少文 | Ball valve with good sealing performance |
| CN112324922A (en) * | 2020-11-02 | 2021-02-05 | 朱少文 | Ball valve for blast furnace coal injection gun |
| CN213629063U (en) * | 2020-11-12 | 2021-07-06 | 石家庄石冶阀门制造有限公司 | Connect stable furnace roof bleeding valve |
| CN215050432U (en) * | 2021-04-09 | 2021-12-07 | 首钢长治钢铁有限公司 | Improved blast furnace coal injection gun clip |
| CN215806535U (en) * | 2021-05-26 | 2022-02-11 | 唐山金山腾宇科技有限公司 | Ball valve |
| CN217733167U (en) * | 2022-06-08 | 2022-11-04 | 漯河鑫世通冶金设备有限公司 | Ball valve for spray gun |
| CN219159621U (en) * | 2022-12-01 | 2023-06-09 | 启东远大阀门有限公司 | Ball valve of coal injection gun |
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| CN117210628B (en) | 2024-07-19 |
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