CN111266566A - Steel ladle bottom pouring smoke dust collecting system and method - Google Patents
Steel ladle bottom pouring smoke dust collecting system and method Download PDFInfo
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- CN111266566A CN111266566A CN202010235287.1A CN202010235287A CN111266566A CN 111266566 A CN111266566 A CN 111266566A CN 202010235287 A CN202010235287 A CN 202010235287A CN 111266566 A CN111266566 A CN 111266566A
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- 239000000779 smoke Substances 0.000 title claims abstract description 80
- 239000000428 dust Substances 0.000 title claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 40
- 239000010959 steel Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 62
- 210000001503 joint Anatomy 0.000 claims abstract description 25
- 238000005266 casting Methods 0.000 claims abstract description 16
- 244000035744 Hura crepitans Species 0.000 claims description 36
- 230000006698 induction Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000003546 flue gas Substances 0.000 claims description 5
- 230000008602 contraction Effects 0.000 claims description 4
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000004071 soot Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D45/00—Equipment for casting, not otherwise provided for
- B22D45/005—Evacuation of fumes, dust or waste gases during manipulations in the foundry
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention provides a steel ladle bottom pouring smoke dust collecting system and a steel ladle bottom pouring smoke dust collecting method, and belongs to the field of smoke dust collection in the casting industry. The steel ladle bottom pouring smoke dust collecting system comprises a main smoke exhaust pipeline, a butt joint valve, a bottom pouring collecting cover, a traveling track and a reserved opening sealing device; the ladle bottom pouring collection cover comprises a first independent collection cover and a second independent collection cover, and during pouring, the two independent ladle bottom pouring collection covers are butted into a whole and are symmetrical along a butt joint surface. According to the pouring smoke dust collecting system, the design and the sealing mode of the dust hood are improved, the butt joint valve is used for switching, a small sealing space can be formed at a pouring station, the sealing performance is good, compared with a top suction hood, the air quantity required for dust removal can be greatly reduced, and the collecting efficiency is greatly improved. Compared with the scheme of isolating the whole pouring workshop, the method is more energy-saving and better in operability.
Description
Technical Field
The invention belongs to the field of smoke dust collection in the casting industry, and particularly relates to a steel ladle bottom pouring smoke dust collection system and a smoke dust collection method.
Background
In the pouring process of large castings in the casting industry, a travelling crane is needed to hang a ladle for pouring, the ladle leaks molten steel into a sand box or a casting mold through a ladle bottom pouring valve, a large amount of smoke and dust are generated in the pouring process, mainly splashing dust caused by falling of the molten steel, smoke and dust generated by gasification of a sand box core and smoke and volatile matters generated by heating of the casting sand, and the environment of a pouring site is severe due to the large amount of smoke and dust, so the smoke and dust needs to be collected.
The form of cover is collected in pouring ladle bottom pouring of current is mostly the top suction type, the side suction type and the portable of semi-surrounding, nevertheless because of the crane ladle removes, end runner operation needs, the suction hood is very far away from the pouring point, can't effectively collect a large amount of smoke and dust and harmful gas that produce in the pouring process, has caused the environmental pollution in whole workshop. The Chinese invention patent CN110538853A discloses a method for using a movable fully-closed casting dust removal facility, wherein dust removal cover rails are arranged on two sides of a casting sand box, a movable dust removal cover is arranged on the rails, electric rolling doors are additionally arranged on two sides of the dust removal cover, and the top end of the dust removal cover is connected with a storage bin of a large-scale dust collector through a steel wire hose, so that the sealing of a pouring area is realized, and the smoke collection effect is improved. But this suction hood uses the flexible steel wire hose adjustment position, and the operation is complicated, and is with high costs, and can't avoid the flue gas to pass through the sprue gate excessive during the pouring, still has the problem that flue gas efficiency is low, the rate of leaking out is high.
Disclosure of Invention
Aiming at the problems existing in the pouring of the large casting, the invention provides a steel ladle bottom pouring smoke dust collecting system and a smoke dust collecting method which can effectively seal dust in the pouring process, have high smoke gas collecting efficiency and high air volume utilization rate.
In order to achieve the purpose, the invention adopts the technical scheme that:
the steel ladle bottom pouring smoke dust collecting system comprises a main smoke discharging pipeline, a butt joint valve, a bottom pouring collecting cover, a walking track, a reserved port sealing device and an illuminating and monitoring system.
The ladle bottom pouring collection cover comprises a first independent collection cover and a second independent collection cover, the top of the first independent collection cover is provided with a smoke outlet, a crown block reserved opening and a reserved opening sealing device, and the bottom of the first independent collection cover is provided with a walking device; the exhaust port is matched with the main pipeline butt joint valve, and the crown block reserved port is a rectangular notch with three sealed sides and one open side.
The reserved opening sealing device comprises a sealing baffle, a tension spring, a control motor, a sliding groove, a contraction elastic rope, a tarpaulin covering film, a rolling rod and a crown block induction positioning device; a sliding groove is formed above the boundary of the crown block reserved opening along the extending direction of the rail, the sealing baffle is positioned above the sliding groove and just covers the crown block reserved opening, the elastic rope is pulled and contracted by controlling the motor to perform telescopic motion, and the tensioning spring is used for assisting in tensioning the sealing baffle; the overhead traveling crane is characterized in that a tarpaulin covering film is further arranged at the reserved opening of the overhead traveling crane, the tarpaulin covering film performs telescopic motion through a rolling rod, is contracted and rolled into a roll at ordinary times, is pulled out along with the sealing baffle when the sealing baffle moves, and is the same as the sealing baffle in size when the sealing baffle is completely unfolded; the overhead traveling crane induction positioning device is a row of magnetic induction overhead traveling crane induction positioners arranged along one side of the overhead traveling crane reserved opening, can induce the position of the overhead traveling crane, and is interlocked with the control motor to control the telescopic distance of the sealing baffle.
The second independent collecting cover has the same structure as the first independent collecting cover and can freely move on the traveling track; during pouring, the two independent ladle bottom pouring collecting covers are butted into a whole and are symmetrical along a butt joint surface, and the crown block reserved opening is in a rectangular hole shape.
Preferably, the first independent collecting cover and the second independent collecting cover are all steel structure wall plates except for the butt joint surface and the crown block reserved opening, and the height from the bottom of each side structure wall plate to the ground is more than 2 meters.
Preferably, temperature-resistant materials are laid inside the steel structure wall plate, and the temperature-resistant materials are aluminum silicate plates.
Preferably, a buffer labyrinth sealing structure is arranged at the butt joint surface of the first independent collecting cover and the second independent collecting cover.
Preferably, the buffering labyrinth seal structure is in sealing fit through a concave-convex structure, and a rubber pad is arranged at the concave position of the buffering labyrinth seal structure.
Preferably, the heights of the ladle bottom pouring collection cover are consistent along the track direction, the cross section perpendicular to the track direction is in a gradual rising type, and the smoke outlet is located at the highest position of the cover body.
Preferably, the pouring flask arrangement may be in the form of a pit, a half pit and an above-ground form.
The invention also discloses a smoke collecting method of the steel ladle bottom pouring smoke collecting system, which comprises the following steps:
a. separating the first independent collecting cover from the second independent collecting cover, hanging a steel ladle by a crown block to enter a pouring area, roughly positioning a bottom pouring valve of the steel ladle and a dead head of a sand box, and closing the two independent bottom pouring collecting covers;
b. adjusting the position of the ladle bottom pouring collection cover, butting a smoke outlet of the ladle bottom pouring collection cover with a dust suction port of the main pipeline, and starting a fan;
c. starting a control motor at a crown block reserved opening at the top of the ladle bottom pouring collection cover, sensing the position of the crown block through a crown block sensing and positioning device, moving a sealing baffle plate to seal the crown block reserved opening, and at the moment, hanging the ladle and sealing a sand box in the ladle bottom pouring collection cover;
d. an operator positions a ladle bottom pouring valve and a sand box riser, opens the ladle bottom pouring valve, injects molten steel into a sand box or a steel mould and starts pouring;
e. after the first sand box is poured, the crane ladle is commanded by an operator to travel along the inner part of the ladle bottom pouring collection cover with a reserved crown block opening, the motor is controlled to drive the double-side sealing baffle plates to correspondingly travel along with the movement of the crown block under the guidance of the crown block induction positioning device, and the second sand box is poured after the steel ladle is positioned to the next pouring point;
f. when the sand box in the ladle bottom pouring collection cover is completely poured, smoke dust in the cover is emptied, the ladle bottom pouring collection cover moves on the traveling track, and the smoke outlet moves to the next butt valve of the smoke exhaust main pipeline;
g. after the butt joint is completed, moving the steel ladle to a preset pouring position, opening a butt joint valve of a main smoke exhaust pipeline, and entering the next pouring cycle;
h. and after the molten steel in the ladle is used, exhausting flue gas in the ladle bottom pouring collection cover, separating the first independent collection cover from the second independent collection cover, and driving the crown block to separate and replace the ladle.
Preferably, when the sand box needs to be arranged in a pouring pit before pouring, the sand box casting heads are linearly arranged along the direction of the traveling track of the ladle bottom pouring collection cover and are arranged in the middle of a reserved crown block opening of the ladle bottom pouring collection cover.
Preferably, the movement of the ladle bottom pouring collection cover and the crown block ladle is instructed by an operator in the cover, and the ladle bottom pouring collection cover and the crown block ladle can move simultaneously or independently.
Compared with the prior art, the invention has the advantages and positive effects that:
1. according to the pouring smoke dust collecting system, the design and the sealing mode of the dust hood are improved, a fully-closed collecting form and an openable/closed movable hood combined structure are adopted, and the butt valve switching is matched, so that a small sealing space can be formed at a pouring station, the sealing performance is good, the air quantity required for dust removal can be greatly reduced compared with a top suction hood, and the collecting efficiency is improved. Compared with the scheme of isolating the whole pouring workshop, the method is more energy-saving and better in operability.
2. The movable ladle bottom pouring collection cover adopts a gradually rising cover body structure, so that large-discharge smoke dust in the moment of pouring is buffered, the smoke dust can be effectively collected at the highest point, and the whole set of system can be controlled by lower air volume.
3. Through setting up the main pipeline diverter valve of discharging fume, can use each pouring station with ladle bottom pouring collection cover, practice thrift environmental protection dust removal input.
Drawings
FIG. 1 is a front view of a ladle bottom pouring smoke collection system provided by an embodiment of the invention;
FIG. 2 is a top view of a ladle bottom pouring smoke collection system provided by an embodiment of the invention;
FIG. 3 is a cross-sectional view of a ladle bottom pouring smoke collection system with a sand box in the form of a pit, taken perpendicular to a rail according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a ladle bottom pouring smoke collection system with a half pit form of a sand box according to an embodiment of the present invention, taken perpendicular to a rail;
FIG. 5 is a cross-sectional view of a ladle bottom pouring smoke collection system with a sand box in the form of a floor provided by an embodiment of the present invention, taken perpendicular to a rail;
fig. 6 is a schematic view of a sealing device of a reserved opening of a ladle bottom pouring smoke collecting system according to an embodiment of the present invention;
fig. 7 is a schematic view of a butt joint of two ladle bottom pouring collecting covers in the ladle bottom pouring smoke collecting system provided by the embodiment of the invention;
fig. 8 is a diagram illustrating an operation state of the system for collecting soot during ladle bottom pouring according to the embodiment of the present invention;
in the figure, 11: main flue gas duct, 12: docking valve, 21: smoke outlet, 22: first independent collection hood, 22': second independent collecting cover, 23: running gear, 24: buffer labyrinth seal structure, 241: concave-convex structure, 242: rubber pad, 25: preformed hole sealing device, 251: control motor, 252: tarpaulin coating, 253: seal baffle, 254: tension spring, 255: sliding groove, 256: contracting elastic cord, 257: winding rod, 26: crown block reserved port, 27: travel track, 31: ladle, 32: ladle bottom pouring valve, 41: flask, 42: and (5) pouring a pit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, an embodiment of the present invention provides a ladle bottom pouring smoke collecting system, which includes a main smoke exhaust pipe 11, a docking valve 12, a bottom pouring collecting cover, a traveling rail 23, a reserved port sealing device 25, and an illumination and monitoring system.
The ladle bottom pouring collection cover comprises a first independent collection cover 22 and a second independent collection cover 22', the top of the first independent collection cover 22 is provided with a smoke outlet 21, a crown block reserved opening 26 and a reserved opening sealing device 25, and the bottom of the first independent collection cover is provided with a walking device 23; the smoke outlet 21 is matched with the main pipeline butt joint valve 12, and the position can be adjusted according to different pouring points, so that one set of equipment can be realized, and multiple points can be utilized. The crown block reserved opening 26 is a rectangular gap with three closed sides and one open side. So that the crown block can move flexibly and is convenient for pouring. The second independent collecting cover 22' has the same structure as the first independent collecting cover 22 and can freely move on the travelling track 27; during pouring, the two independent ladle bottom pouring collecting covers are butted into a whole and are symmetrical along a butting surface, and the crown block reserved opening 26 is in a rectangular hole shape.
As further shown in fig. 3, the heights of the ladle bottom pouring collection cover are consistent along the track direction, the cross section perpendicular to the track direction is gradually increased, the smoke outlet 21 is located at the highest position of the cover body, smoke can easily flow to the smoke outlet, smoke exhaust efficiency is improved, and smoke overflow is avoided. As shown in fig. 3-5, the pouring sand box can be arranged in three different forms according to the working requirement and the actual situation on site, wherein fig. 3 is in a pit form, fig. 4 is in a half pit form, and fig. 5 is in an above-ground form, and the different forms of arrangement do not affect the collection efficiency of the ladle bottom pouring collection cover.
As further shown in fig. 6, in order to ensure the sealing performance of the ladle bottom pouring collection cover, the preformed port sealing device 25 comprises a control motor 251, a tarpaulin covering film 252, a sealing baffle 253, a tensioning spring 254, a sliding groove 255, a contraction elastic rope 256, a winding rod 257 and a crown block induction positioning device; a sliding groove 255 is formed above the boundary of the crown block reserved opening 26 in the track extending direction, the sealing baffle 253 is located above the sliding groove 255 and just covers the crown block reserved opening 26, the control motor 251 pulls the contraction elastic rope 256 to perform telescopic motion, the tensioning spring 254 tensions a fixed point at the bottom of the sealing plate, and the sealing baffle 253 is close to a crown block steel wire rope by elasticity to play a role in assisting in tensioning the sealing baffle 253.
The crown block reserved opening 26 is also provided with a tarpaulin coating film 252, the tarpaulin coating film 252 performs telescopic motion through a rolling rod 257, the tarpaulin coating film 252 is contracted and rolled into a roll at ordinary times, the sealing baffle 253 is pulled out along with the sealing baffle 253 when moving, and the size of the sealing baffle 253 is the same as that of the sealing baffle 253 when being completely unfolded; the overhead traveling crane sensing and positioning device is a row of magnetic sensing overhead traveling crane sensing and positioning devices arranged along one side of the overhead traveling crane reserved opening 26, can sense the position of the overhead traveling crane, and is interlocked with the control motor 251 to control the telescopic distance of the sealing baffle 253. The sealing device for the reserved opening is matched with a tarpaulin covering film through the sealing baffle plate, a following sealing mode is adopted, the cover is poured and collected at the bottom of the ladle and is always in a sealing state after being closed, the sealing performance is good, and compared with a top suction cover, the required air quantity for dust removal can be greatly reduced, and the collection efficiency is improved.
In order to improve device bulk strength and stability, first independently collect cover 22 and second independently collect cover 22' except that butt joint face and overhead traveling crane reserve opening 26, all the other three sides and top surface are the steel construction wallboard, and its inside temperature resistant material that lays, temperature resistant material is aluminum silicate plate to set up to the net pulling form, can play the effect of inhaling the sound, thermal-insulated, preventing splashing, not only can protect and collect operating personnel in the cover, can prevent moreover that the overheated cover that arouses of molten iron from warping. The height of the bottom of the side structure wall plate from the ground is greater than 2 meters, the sight of an operator is not blocked, the moving space is large, no influence is caused on command and operation, and the side structure wall plate is easier to use by operators.
As further shown in fig. 7, a buffer labyrinth seal structure 24 is disposed at the butt joint surface of the first independent collecting cover 22 and the second independent collecting cover 22', and the buffer labyrinth seal structure 24 is in seal fit through a concave-convex structure 241, so as to increase the sealing performance of the two bottom pouring collecting covers after butt joint; in addition, the concave part is provided with a rubber pad 242 which plays a role of buffering when the two moving covers are butted.
In addition, for the crown block operator, there is the blind area in the collection cover, consequently for the convenience crown block operator removes the crown block, and avoids appearing unnecessary operation, be provided with the monitor in the pouring collection cover at the bottom of the package, the position of monitor can set up in four apex angle departments of collection cover. To increase visibility, the collection hood is also provided with lighting means inside.
The invention also discloses a smoke collecting method of the steel ladle bottom pouring smoke collecting system, which comprises the following steps:
a. the first and second independent collection hoods 22 and 22' are separated, the ladle 31 is hoisted by the crane into the pouring area, and after the ladle bottom pouring valve 32 and the feeder head of the sand box 41 are roughly positioned, the two independent ladle bottom pouring collection hoods are closed, as shown in fig. 8.
b. And adjusting the position of the ladle bottom pouring collection cover, butting the smoke outlet 21 of the ladle bottom pouring collection cover with the main pipeline butt joint valve 12, and starting the fan.
c. The control motor 251 at the position of the crown block reserved opening 26 at the top of the ladle bottom pouring collection cover is started, the crown block position is sensed through the crown block sensing and positioning device, the sealing baffle 253 is moved to seal the crown block reserved opening 26, and at the moment, the ladle is hoisted and the sand boxes are sealed in the ladle bottom pouring collection cover.
d. An operator positions the ladle bottom pouring valve 32 and a sand box 41 riser, opens the ladle bottom pouring valve 32, pours molten steel into the sand box and starts pouring; the cover is collected for airtight structure to ladle end pouring this moment, and the smoke and dust of production is all collected by the mouth is collected at the top, does not pour the space in the cover, can cushion the gasification of pouring initial stage core and produce a large amount of smoke and dust and harmful gas.
e. After the first sand box is poured, the crane ladle is commanded by an operator to travel along the inner part of the ladle bottom pouring collection cover with the reserved crown block opening, the motor is controlled to drive the double-side sealing baffle plates to correspondingly travel along with the movement of the crown block under the guidance of the crown block induction positioning device, and the second sand box is poured after the steel ladle is positioned to the next pouring point.
f. When the sand box in the ladle bottom pouring collection cover is completely poured, smoke dust in the cover is exhausted, the ladle bottom pouring collection cover moves on the traveling track 27, and the smoke outlet 21 moves to the next butt-joint valve of the smoke exhaust main pipeline 11.
g. After the butt joint is completed, the steel ladle is moved to a preset pouring position, the butt joint valve 12 of the main smoke exhaust pipeline 11 is opened, and the next pouring cycle is started.
h. When the molten steel in the ladle is used, the smoke in the ladle bottom pouring collection cover is exhausted, the first independent collection cover 22 and the second independent collection cover 22' are separated, and a crown block is driven to separate and replace the ladle.
In order to further reduce the moving and positioning time of the crown block and shorten the molten steel pouring time, when the sand box 41 is arranged in the pouring pit 42 before pouring, a sand box pouring head needs to be linearly arranged along the direction of the ladle bottom pouring collecting cover walking track 27 and is arranged in the middle of the reserved crown block opening 26 of the ladle bottom pouring collecting cover. It can be understood that the arrangement of the casting head of the sand box is not necessarily a straight line, and the casting can be realized by a certain transverse distance, because the crown block can also move transversely, but the amplitude is small, and because the outlet of the bottom casting ladle is generally eccentric, the transverse distance between the bottom casting head and the moving direction of the crane can be adjusted according to the central rotation of the lifting hook of the crown block. It should be noted that the movement of the ladle bottom pouring collection cover and the crown block ladle is commanded by an operator in the cover and is operated by matching with a monitor, and the ladle bottom pouring collection cover and the crown block ladle can move simultaneously or independently.
The device can flexibly adjust the mould according to different castings, is suitable for sand boxes and is also suitable for moulds of other forms.
Claims (10)
1. The steel ladle bottom pouring smoke dust collecting system is characterized by comprising a main smoke discharging pipeline, a butt joint valve, a bottom pouring collecting cover, a walking track, a reserved opening sealing device and an illuminating and monitoring system;
the ladle bottom pouring collection cover comprises a first independent collection cover and a second independent collection cover, the top of the first independent collection cover is provided with a smoke outlet, a crown block reserved opening and a reserved opening sealing device, and the bottom of the first independent collection cover is provided with a walking device; the smoke outlet is matched with the main pipeline butt joint valve, and the crown block reserved opening is a rectangular notch with three closed sides and one open side;
the reserved opening sealing device comprises a sealing baffle, a tension spring, a control motor, a sliding groove, a contraction elastic rope, a tarpaulin covering film, a rolling rod and a crown block induction positioning device; a sliding groove is formed above the boundary of the crown block reserved opening along the extending direction of the rail, the sealing baffle is positioned above the sliding groove and just covers the crown block reserved opening, the elastic rope is pulled and contracted by controlling the motor to perform telescopic motion, and the tensioning spring is used for assisting in tensioning the sealing baffle; the overhead traveling crane is characterized in that a tarpaulin covering film is further arranged at the reserved opening of the overhead traveling crane, the tarpaulin covering film performs telescopic motion through a rolling rod, is contracted and rolled into a roll at ordinary times, is pulled out along with the sealing baffle when the sealing baffle moves, and is the same as the sealing baffle in size when the sealing baffle is completely unfolded; the overhead traveling crane induction positioning device is a row of magnetic induction overhead traveling crane induction positioners arranged along one side of a reserved opening of an overhead traveling crane, can sense the position of the overhead traveling crane and is interlocked with a control motor to control the telescopic distance of the sealing baffle;
the second independent collecting cover has the same structure as the first independent collecting cover and can freely move on the traveling track; during pouring, the two independent ladle bottom pouring collecting covers are butted into a whole and are symmetrical along a butt joint surface, and the crown block reserved opening is in a rectangular hole shape.
2. The ladle bottom pouring smoke collection system according to claim 1, wherein the first and second independent collection covers are all steel structural wall plates except for the butt joint surface and the crown block reserved opening, and the height of the bottom of each side structural wall plate from the ground is more than 2 m.
3. The ladle bottom pouring smoke collection system according to claim 2, wherein a temperature-resistant material is laid inside the steel structure wall plate, and the temperature-resistant material is an aluminum silicate plate.
4. The ladle bottom pouring smoke collection system according to claim 1, wherein a buffer labyrinth structure is arranged at the butt joint surface of the first independent collection cover and the second independent collection cover.
5. The ladle bottom pouring smoke collection system according to claim 4, wherein the buffer labyrinth seal structure is sealed in a matching way through a concave-convex structure, and a rubber pad is arranged at the concave position of the buffer labyrinth seal structure.
6. The ladle bottom pouring smoke dust collecting system according to claim 1, wherein the ladle bottom pouring collecting cover has the same height at each position along the track direction, the cross section perpendicular to the track direction is gradually raised, and the smoke outlet is positioned at the highest position of the cover body.
7. The ladle bottom pouring smoke collection system according to claim 1, wherein the pouring flask arrangement is in the form of a pit, a half pit, and an above ground form.
8. The method for collecting soot from a ladle bottom pouring soot collection system according to any one of claims 1 to 7, comprising the steps of:
a. separating the first independent collecting cover from the second independent collecting cover, hanging a steel ladle by a crown block to enter a pouring area, roughly positioning a bottom pouring valve of the steel ladle and a dead head of a sand box, and closing the two independent bottom pouring collecting covers;
b. adjusting the position of the ladle bottom pouring collection cover, butting a smoke outlet of the ladle bottom pouring collection cover with a dust suction port of the main pipeline, and starting a fan;
c. starting a control motor at a crown block reserved opening at the top of the ladle bottom pouring collection cover, sensing the position of the crown block through a crown block sensing and positioning device, moving a sealing baffle plate to seal the crown block reserved opening, and at the moment, hanging the ladle and sealing a sand box in the ladle bottom pouring collection cover;
d. an operator positions a ladle bottom pouring valve and a sand box riser, opens the ladle bottom pouring valve, injects molten steel into a sand box or a steel mould and starts pouring;
e. after the first sand box is poured, the crane ladle is commanded by an operator to travel along the inner part of the ladle bottom pouring collection cover with a reserved crown block opening, the motor is controlled to drive the double-side sealing baffle plates to correspondingly travel along with the movement of the crown block under the guidance of the crown block induction positioning device, and the second sand box is poured after the steel ladle is positioned to the next pouring point;
f. when the sand box in the ladle bottom pouring collection cover is completely poured, smoke dust in the cover is emptied, the ladle bottom pouring collection cover moves on the traveling track, and the smoke outlet moves to the next butt valve of the smoke exhaust main pipeline;
g. after the butt joint is completed, moving the steel ladle to a preset pouring position, opening a butt joint valve of a main smoke exhaust pipeline, and entering the next pouring cycle;
h. and after the molten steel in the ladle is used, exhausting flue gas in the ladle bottom pouring collection cover, separating the first independent collection cover from the second independent collection cover, and driving the crown block to separate and replace the ladle.
9. The smoke collecting method according to claim 8, wherein when the sand box is arranged in a pouring pit before pouring, a sand box casting head is linearly arranged along the direction of the traveling track of the ladle bottom pouring collecting cover and is arranged in the middle of a reserved crown block opening of the ladle bottom pouring collecting cover.
10. The smoke dust collecting method according to claim 8, wherein the movement of the ladle bottom pouring collecting cover and the crown block ladle is commanded by an operator in the cover, and the movement can be carried out simultaneously or independently.
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| CN202010235287.1A CN111266566A (en) | 2020-03-30 | 2020-03-30 | Steel ladle bottom pouring smoke dust collecting system and method |
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| CN202010235287.1A CN111266566A (en) | 2020-03-30 | 2020-03-30 | Steel ladle bottom pouring smoke dust collecting system and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705697A (en) * | 2020-12-31 | 2021-04-27 | 新兴铸管股份有限公司 | Dust suction device for a casting area |
| CN114275081A (en) * | 2021-12-09 | 2022-04-05 | 张家港华仁再生资源有限公司 | Scraped car disassembling device capable of removing dust and reducing noise |
| CN116144851A (en) * | 2023-03-23 | 2023-05-23 | 济南永鑫金属制品厂迁西分厂 | Slag pouring and dedusting equipment for slag stewing pond |
-
2020
- 2020-03-30 CN CN202010235287.1A patent/CN111266566A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705697A (en) * | 2020-12-31 | 2021-04-27 | 新兴铸管股份有限公司 | Dust suction device for a casting area |
| CN114275081A (en) * | 2021-12-09 | 2022-04-05 | 张家港华仁再生资源有限公司 | Scraped car disassembling device capable of removing dust and reducing noise |
| CN116144851A (en) * | 2023-03-23 | 2023-05-23 | 济南永鑫金属制品厂迁西分厂 | Slag pouring and dedusting equipment for slag stewing pond |
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