CN110508798B - Molten aluminum slagging-off method - Google Patents
Molten aluminum slagging-off method Download PDFInfo
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- CN110508798B CN110508798B CN201910910208.XA CN201910910208A CN110508798B CN 110508798 B CN110508798 B CN 110508798B CN 201910910208 A CN201910910208 A CN 201910910208A CN 110508798 B CN110508798 B CN 110508798B
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- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/005—Removing slag from a molten metal surface
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Abstract
The invention discloses a molten aluminum slagging-off method, placing a rotary slagging-off head device on an aluminum liquid surface, starting slagging-off operation, enabling a slagging-off working surface formed by three rotary slagging-off head devices to move back and forth on the liquid surface by operating a slagging-off operating lever of a worker, continuously collecting floating slag on the liquid surface and slag suspended below the liquid surface on the inner side surface of an arc-shaped slag filtering plate by the arc-shaped slag filtering plate in the rotating process of the rotary slagging-off head, enabling the slag to slide from the inner side surface of the arc-shaped slag filtering plate to a rotary drum slag inlet in the vertical state or approaching to the vertical state, enabling the slag to enter the rotary drum slag inlet from the rotary drum direction, enabling the slag to enter the rotary slag-off connecting cylinder to be collected when the slag inlet is aligned with a slag inlet arranged at the upper part of the rotary slag-off connecting cylinder, closing a slagging-off motor to enable the rotary slagging-off head device to leave the aluminum liquid surface, starting the slagging-off motor to rotate reversely, enabling a lifting transmission, when the rotating slag-raking head device is observed to rotate reversely, the rotating slag-raking head device is folded.
Description
Technical Field
The invention relates to the technical field of metal smelting and industrial kiln equipment, in particular to a molten aluminum slagging-off method.
Background
In the manufacturing and processing of aluminum industry, aluminum ingots or waste aluminum blocks are melted into aluminum liquid under the high-temperature condition in a large box-type smelting furnace, because the unfused aluminum ingots or waste aluminum blocks are generally low in purity and contain more impurities, after the aluminum ingots or waste aluminum blocks are melted into the aluminum liquid, in the refining process, a part of impurities are precipitated in the smelting furnace, and a part of floating slag floats on the surface of the aluminum liquid, the aluminum liquid needs to be subjected to slagging-off purification treatment, otherwise, the floating slag seriously affects the casting quality.
Therefore, the molten floating slag must be cleaned in the furnace, the currently generally adopted slag skimming mode is to use a simple skimming tool with a colander at the front end for fishing, manually hold the handle of the skimming tool, push and pull the skimming tool back and forth in the molten aluminum to enable impurities to enter the colander, and then take the skimming tool out of the smelting furnace, so that the impurities skived out each time are few, the time for achieving the effect of purifying the molten aluminum is long, and the slag skimming effect is not good.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a molten aluminum slagging-off method, which mainly solves the problems that the time for achieving the molten aluminum purification effect is long and the slagging-off effect is not good by adopting the existing slagging-off equipment and technology in the process of melting and refining the existing aluminum ingot in a melting furnace.
The invention is realized by the following technical scheme:
a molten aluminum slagging-off method comprises the following steps:
step 1, arranging a slag-raking operating rod to be of a tubular structure, arranging a transmission shaft in the slag-raking operating rod, arranging bevel teeth at the outer end of the transmission shaft, arranging bevel teeth at the inner end of the transmission shaft, vertically arranging a slag-raking motor at the outer end of the slag-raking operating rod, arranging motor bevel teeth on a rotating shaft of the slag-raking motor, and meshing and driving the motor bevel teeth and the bevel teeth at the;
step 4, a folding and unfolding pull rod piece is arranged between each rotary slag raking head device and the lower end of the lifting cylinder, and the lifting cylinder pulls each rotary slag raking head device to fold through the folding and unfolding pull rod pieces by lifting the lifting cylinder;
step 5, when the rotary slag raking head device is in a closed state, one end of the rotary slag raking head device is extended into a hearth through a furnace door opening, the slag raking motor starts to rotate forwards according to setting, the lifting cylinder is in a rising state in the rotary cylinder before the slag raking motor starts to rotate forwards, when the slag raking motor rotates forwards, the lifting transmission shaft drives the lifting cylinder to descend in the rotary cylinder through threaded connection, when the upper limiting ring abuts against a lifting cylinder limiting ring at a set position, the lifting cylinder cannot descend continuously, at the moment, the rotary slag raking head device can be completely unfolded in the hearth and is in a horizontal state, the lifting transmission shaft continues to rotate, the lifting transmission shaft can drive the lifting cylinder and the rotary cylinder to synchronously rotate, and then three rotary slag raking head devices can be driven to rotate;
Furthermore, a plurality of transmission shaft erection plates are uniformly distributed in the slag-raking operation rod, and the transmission shafts are inserted into the transmission shaft erection plates.
Furthermore, the folding and unfolding pull rod piece comprises a vertical pull rod and a transverse pull rod, the lower end of the vertical pull rod is fixedly connected to the inner end part of the rotary slag-raking connecting cylinder, the outer end of the transverse pull rod is hinged to the upper end of the vertical pull rod, and the inner end of the transverse pull rod is hinged to the lower end head of the lifting cylinder.
Furthermore, the lower limiting ring is arranged above the intersection point of the transverse pull rod and the lifting cylinder, and when the transverse pull rod is in a horizontal state, a gap of 0-1mm is reserved between the bottom surface of the lower limiting ring and the top surface of the transverse pull rod.
Furthermore, the lower end of the lifting cylinder is sealed.
Furthermore, a support ring is arranged on the corresponding rotary cylinder body below the mounting opening, and after the rotary slag raking head device is horizontally unfolded, the support ring is supported on the rotary slag raking connecting cylinder of the rotary slag raking head device.
Furthermore, a slag collecting basket is movably sleeved at the lower end of the rotary cylinder.
Furthermore, the transmission connecting box body comprises an upper box body and a lower box body, one side of the upper box body is provided with a bevel gear mounting opening, a bevel gear mounting cavity is arranged in the upper box body, the upper end part and the lower end part of the upper box body are respectively provided with a bearing mounting hole, and the lower end part of the upper box body is also provided with an upper limiting spigot of the rotary cylinder body; a rotary cylinder mounting hole is formed in the lower box body, and a rotary cylinder lower limiting spigot is formed at the upper end of the lower box body; when the upper box body and the lower box body are assembled, the upper limiting seam allowance of the rotary cylinder body on the upper box body and the lower limiting seam allowance of the rotary cylinder body on the lower box body are correspondingly buckled, and the upper box body and the lower box body are connected into a whole through bolts.
Furthermore, the upper end of the rotary barrel is provided with a limiting stop ring, the rotary barrel below the limiting stop ring is provided with a plane bearing, the limiting stop ring is correspondingly installed in the limiting stop hole in the rotary barrel, and the plane bearing is correspondingly installed in the limiting stop hole in the lower part of the rotary barrel.
Furthermore, the rotary slag skimming connecting cylinder comprises a square pipe joint section and a slag skimming circular pipe section, a closed blocking plate is arranged at the outer end of the slag skimming circular pipe section, a flange plate is arranged at the inner end of the slag skimming circular pipe section, one end of the square pipe joint section is connected to the flange plate, and the other end of the square pipe joint section is connected to the rotary cylinder body through a connecting rotating shaft; the top of the slag removing circular pipe section is provided with a slag inlet; the rotary drum of the rotary slag raking head is sleeved on the slag raking circular pipe section to rotate.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention relates to a molten aluminum slagging-off method, a plurality of rotary slagging-off head devices are uniformly arranged around the lower end part of a rotary cylinder body, in the process that the rotary cylinder body drives the rotary slagging-off head devices to synchronously rotate, the rotary slagging-off head devices are provided with rotary slagging-off heads which can rotate through design, the rotary slagging-off heads are provided with strip-shaped blades and arc-shaped slag filtering plates, when the rotary slagging-off head devices rotate on a liquid surface, the rotary slagging-off heads rotate on a rotary slagging-off connecting cylinder through the acting force of molten aluminum on the strip-shaped blades, in the process of rotating the rotary slagging-off heads, the arc-shaped slag filtering plates arranged on the rotary slagging-off heads continuously collect floating scum on the liquid surface and suspended slag bodies below the liquid surface on the inner side surface of the arc-shaped slag filtering plates, because the arc-shaped slag filtering plates are designed, the slag bodies slide on the inner side surface of the arc-shaped slag filtering plates towards the direction of the rotary cylinder to enter a slag inlet, when the slag inlet of the rotary drum is aligned with the slag inlet formed at the upper part of the rotary slag-off connecting cylinder, slag bodies enter the rotary slag-off connecting cylinder to be collected, so that the slag-off operation is realized;
2. in order to realize high-efficiency slagging-off, the length of the rotary slagging-off head must be as long as possible, the expansion planes of the rotary slagging-off head devices are as close to the liquid level of the melting tank as possible, so that the rotary slagging-off head devices on the rotary cylinder body can realize high-efficiency slagging-off after rotating for several circles, but the size of the furnace door of the box-type melting furnace is limited, and the rotary slagging-off head devices which are too long cannot pass through the furnace door, so the rotary slagging-off head devices with the folding function are designed; because the rotary cylinder body and the rotary slag-raking head device rotate synchronously, the mechanical structure of the rotary slag-raking head device on the folding of the rotary cylinder body is difficult to realize, the invention creatively designs the slag-raking head transmission device, the slag-raking head transmission device comprises a transmission connection box body, a lifting transmission shaft, a lifting cylinder and the rotary cylinder body, the lifting transmission shaft is in matched transmission with the transmission shaft through bevel gears, the lifting cylinder is in threaded connection with the lifting transmission shaft and is arranged in the rotary cylinder body, the lifting cylinder only can do lifting movement in the rotary cylinder body, when the lifting transmission shaft drives the lifting cylinder to lift in the rotary cylinder body, the rotary cylinder body can not rotate, when the lifting cylinder rises or falls to a set position, the lifting cylinder and the lifting transmission shaft can rotate synchronously, if the lifting cylinder and the lifting transmission shaft rotate synchronously and anticlockwise to finish the folding of the rotary slag-raking head device, then the lifting cylinder and the lifting transmission shaft synchronously rotate clockwise to complete the unfolding of the rotary slag-raking head device, and the slag-raking operation can be started;
3. the invention relates to a molten aluminum slagging-off method, wherein a slag collecting basket is movably sleeved at the lower end of a rotary barrel, and slagging equipment can be taken out from a hearth without floating slag by observing the liquid level of aluminum.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural view of an expanded state of a molten aluminum slagging-off device of the invention;
FIG. 2 is a structural diagram of a surrounding array state of the rotary slag raking head device according to the present invention;
FIG. 3 is a schematic structural view of the rotary slag raking head device in a folded state according to the present invention;
FIG. 4 is a schematic structural view of a rotary slag raking head device according to the present invention;
FIG. 5 is a schematic structural view of a rotary slag removing connecting cylinder according to the present invention;
FIG. 6 is a schematic structural view of a rotary slagging-off head according to the present invention;
FIG. 7 is a schematic structural view of an end face of the rotary slagging-off head of the invention;
FIG. 8 is a schematic structural view of a transmission connection box of the present invention;
FIG. 9 is a schematic structural view of the upper case of the present invention;
FIG. 10 is a schematic structural view of a lower case of the present invention;
reference numbers and corresponding part names in the drawings:
1-a slagging motor, 2-a slagging operating rod, 3-a rotary slagging head device, 4-a slagging head transmission device, 5-a transmission shaft, 6-a transmission shaft outer end bevel gear, 7-a transmission shaft inner end bevel gear, 8-a motor bevel gear, 9-a transmission connecting box body, 10-a lifting transmission shaft, 11-a lifting cylinder, 12-a rotary cylinder body, 13-a bearing, 14-a lifting transmission shaft bevel gear, 15-an upper limit ring, 16-a lower limit ring, 17-a lifting cylinder limit ring, 18-a rotary slagging connecting cylinder, 19-a rotary slagging head, 20-a mounting port, 21-a slag inlet, 22-a rotary cylinder, 23-a strip-shaped blade, 24-an arc-shaped slag filtering plate, 25-a rotary cylinder slag inlet, 26-a shaft erecting plate and 27-a vertical pull rod, 28-transverse pull rod, 29-support ring, 30-slag body collection basket, 31-upper box body, 32-lower box body, 33-bevel gear installation hole, 34-bevel gear installation cavity, 35-bearing installation hole, 36-upper limit stop of rotary cylinder body, 37-mounting hole of rotary cylinder body, 38-lower limit stop of rotary cylinder body, 39-limit baffle ring, 40-plane bearing, 41-square pipe joint section, 42-slag removing circular pipe section, 43-sealing blocking plate, 44-flange plate and 45-connecting rotating shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
As shown in FIGS. 1-10, the molten aluminum slagging-off method of the invention comprises the following steps:
step 1, arranging a slag-raking operating rod 2 to be of a tubular structure, arranging a transmission shaft 5 in the slag-raking operating rod 2, arranging bevel teeth 6 at the outer end of the transmission shaft 5, arranging bevel teeth 7 at the inner end of the transmission shaft 5, vertically arranging a slag-raking motor 1 at the outer end of the slag-raking operating rod 2, arranging motor bevel teeth 8 on a rotating shaft of the slag-raking motor 1, and meshing and driving the motor bevel teeth 8 and the bevel teeth 6 at the outer end of the transmission shaft;
step 4, a folding and unfolding pull rod piece is arranged between each rotary slag raking head device 3 and the lower end of the lifting cylinder 11, and the lifting cylinder 11 pulls each rotary slag raking head device 3 to fold through the folding and unfolding pull rod pieces by lifting the lifting cylinder 11;
step 5, when the rotary slag-raking head device 3 is in a closed state, one end of the rotary slag-raking head device 3 extends into a hearth through a furnace door opening, the slag-raking motor 1 starts to rotate forwards according to setting, before the slag-raking motor 1 starts to rotate forwards, the lifting cylinder 11 is in a rising state in the rotary cylinder body 12, when the slag-raking motor 1 rotates forwards, the lifting transmission shaft 10 drives the lifting cylinder 11 to descend in the rotary cylinder body 12 through threaded connection, when the upper limiting ring 15 abuts against the lifting cylinder limiting ring 17 at a set position, the lifting cylinder 11 cannot descend continuously, at the moment, the rotary slag-raking head device 3 can be completely unfolded in the hearth and is in a horizontal state, the lifting transmission shaft 10 continues to rotate, the lifting transmission shaft 10 can drive the lifting cylinder 11 and the rotary cylinder body 12 to rotate synchronously, and then the three rotary slag-raking head devices 3 can also be;
The invention truly realizes the automation and the convenience of slag skimming and greatly reduces the labor intensity of workers.
Fig. 1-10 show an aluminum liquid slagging-off device, which comprises a slagging-off motor 1, a slagging-off operating rod 2, a rotary slagging-off head device 3 and a slagging-off head transmission device 4, wherein the structural components of the device work in a high-temperature environment, so that the materials are stainless steel or high-temperature resistant materials as much as possible, the slagging-off operating rod 2 in fig. 1 is of a tubular structure and is made of stainless steel tubes, a transmission shaft 5 is arranged in the slagging-off operating rod 2, an outer end bevel gear 6 of the transmission shaft is arranged at the outer end of the transmission shaft 5, an inner end bevel gear 7 of the transmission shaft is arranged at the inner end of the transmission shaft 5, the slagging-off motor 1 is vertically arranged at the outer end of the slagging-off operating rod 2, a rotating shaft of the slagging-off motor 1 is provided with a; the slag removing motor 1 adopts a servo motor, the rotating speed is about 60 revolutions per minute, and 30 revolutions per minute are transmitted to the slag removing head transmission device 4 without too fast rotating speed.
As shown in fig. 3, the slag raking head transmission device 4 comprises a transmission connection box body 9, a lifting transmission shaft 10, a lifting cylinder 11 and a rotary cylinder body 12, the transmission connection box body 9 is connected to the outer side of the transmission connection box body on the inner end of the slag raking operation rod 2, the lifting transmission shaft 10 is arranged in the transmission connection box body 9, the lifting transmission shaft 10 is installed in the transmission connection box body 9 through two bearings 13, lifting transmission shaft umbrella teeth 14 are sleeved on the lifting transmission shaft 10, the lifting transmission shaft umbrella teeth 14 are in transmission connection with the umbrella teeth 7 at the inner end of the transmission shaft in a meshing manner, the lower end of the lifting transmission shaft 10 is connected in the lifting cylinder 11 through threads, the lower end of the lifting cylinder 11 is sealed, and metal. The rotary cylinder body 12 is sleeved on the lower end part of the lifting transmission shaft 10 and the lifting cylinder 11, the lifting cylinder 11 is limited in the rotary cylinder body 12 to move up and down, meanwhile, an upper limiting ring 15 and a lower limiting ring 16 are arranged on the outer wall of the lifting cylinder 11, a lifting cylinder limiting ring 17 is arranged on the inner wall of the rotary cylinder body 12 between the upper limiting ring 15 and the lower limiting ring 16, and the upper end of the rotary cylinder body 12 is rotatably arranged at the lower end part of the transmission connection box body 9; in order to realize high-efficiency slagging-off, the length of a rotary slagging-off head 19 must be as long as possible, the expansion planes of a plurality of rotary slagging-off head devices 3 are as close to the liquid level of a melting tank as possible, so that the rotary slagging-off head devices 3 on a rotary cylinder 12 can realize high-efficiency slagging-off after rotating for several circles, but the size of a furnace door opening of a box-type melting furnace is limited, and the rotary slagging-off head devices 3 which are too long cannot pass through the furnace door opening, so the rotary slagging-off head devices 3 with the folding function are designed; because the rotary cylinder body 12 and the rotary slag-raking head device 3 rotate synchronously, the mechanical structure that the rotary slag-raking head device 3 is folded in the rotary cylinder body 12 is difficult to realize, the invention creatively designs the slag-raking head transmission device 4, the slag-raking head transmission device 4 comprises a transmission connection box body 9, a lifting transmission shaft 10, a lifting cylinder 11 and a rotary cylinder body 12, the lifting transmission shaft 10 is in matched transmission with the transmission shaft 5 through bevel teeth, the lifting cylinder 11 and the lifting transmission shaft 10 are in threaded connection and arranged in the rotary cylinder body 12, the lifting cylinder 11 can only do lifting movement in the rotary cylinder body 12, when the lifting transmission shaft 10 drives the lifting cylinder 11 to lift in the rotary cylinder body 12, the rotary cylinder body 12 can not rotate, when the lifting cylinder 11 rises or falls to a set position, the lifting cylinder 11 can synchronously rotate with the lifting transmission shaft 10, if the lifting cylinder 11 and the lifting transmission shaft 10 are arranged to synchronously rotate anticlockwise to finish the rotary slag-raking head device 3, the lifting cylinder 11 and the lifting transmission shaft 10 synchronously rotate clockwise to complete the unfolding of the rotary slag-raking head device 3, and the slag-raking operation can be started.
Three rotary slag raking head devices 3 are uniformly and circularly arranged at the lower end part of the rotary cylinder body 12, as shown in figure 4, each rotary slag raking head device 3 comprises a rotary slag raking connecting cylinder 18 and a rotary slag raking head 19, the inner end part of each rotary slag raking connecting cylinder 18 is inserted into a mounting port 20 arranged at the lower end part of the rotary cylinder body 12, three mounting ports 20 are uniformly and circularly arranged at the lower end part of the rotary cylinder body 12 in a long strip shape, the size and the width of each mounting port 20 are basically consistent with the width of a square pipe joint section 41, the lower side opening of the length of each mounting port 20 is fixed, the upper side opening is determined according to actual conditions, the close point of the joint of the rotary slag raking head device 3 and the rotary cylinder body 12 is mainly seen, when the rotary slag raking head devices 3 are folded, strip-shaped blades 23 and arc-shaped slag filtering plates 24 can be correspondingly and temporarily inserted into the mounting ports 20, so that the rotary slag raking heads can be conveniently placed, the outer end of the rotary slag-off connecting cylinder 18 is closed, the upper part of the rotary slag-off connecting cylinder 18 is provided with a slag inlet 21, the rotary slag-off head 19 is sleeved on the rotary slag-off connecting cylinder 18, the rotary slag-off head 19 comprises a rotary drum 22, strip-shaped blades 23 and arc-shaped slag-filtering plates 24, a plurality of strip-shaped blades 23 are uniformly distributed and surrounded on the rotary drum 22, generally four strip-shaped blades 23 are arranged, one arc-shaped slag-filtering plate 24 is arranged between the two strip-shaped blades 23, the connecting position of the arc-shaped slag-filtering plate 24 and the rotary drum 22 is approximate to a flat plate structure, the outer end is approximate to an 1/4 arc-shaped plate structure, so that scum can be filtered, and the rotary drum slag inlet 25 is arranged on the rotary drum; the invention relates to a molten aluminum slagging-off method, a plurality of rotary slagging-off head devices 3 are uniformly arranged around the lower end part of a rotary cylinder body 12, in the process that the rotary cylinder body 12 drives the rotary slagging-off head devices 3 to synchronously rotate, the rotary slagging-off head devices 3 are provided with rotary slagging-off heads 19, the rotary slagging-off heads 19 are provided with strip-shaped blades 23 and arc-shaped slag filtering plates 24, when the rotary slagging-off head devices 3 rotate on a liquid surface, the rotary slagging-off heads 19 rotate on a rotary slagging-off connecting cylinder 18 by the acting force of molten aluminum on the strip-shaped blades 23, in the rotating process of the rotary slagging-off heads 19, the arc-shaped slag filtering plates 24 arranged on the rotary slagging-off heads 19 continuously collect floating scum on the liquid surface and suspended slag bodies below the liquid surface on the inner side surfaces of the arc-shaped slag filtering plates 24, because the arc-shaped slag filtering plates 24 are designed to be in an arc-shaped state, the arc-shaped slag filtering plates 24 are, the slag body can slide on the inner side surface of the arc-shaped slag filtering plate 24 towards the direction of the rotary drum 22 to enter the rotary drum slag inlet 25, and when the rotary drum slag inlet 25 is aligned with the upper part of the rotary slag-off connecting cylinder 18, the slag body can enter the rotary slag-off connecting cylinder 18 to be collected, so that the slag-off operation is realized.
A folding and unfolding pull rod piece is arranged between each rotary slag raking head device 3 and the lower end of the lifting cylinder 11, and the lifting cylinder 10 controls the three rotary slag raking head devices 3 to unfold or fold through lifting.
A plurality of transmission shaft mounting plates 26 are uniformly distributed in the slag removing operating rod 2, and the transmission shaft 5 is inserted in the transmission shaft mounting plates 26. The length of the slag-raking operating rod 2 is basically consistent with that of the transmission shaft 5, the transmission shaft 5 is thin and adopts a solid structure, so that a plurality of transmission shaft mounting plates 26 are required for limiting.
The folding and unfolding pull rod piece comprises a vertical pull rod 27 and a transverse pull rod 28, the lower end of the vertical pull rod 27 is fixedly connected to the inner end of the rotary slag-raking connecting cylinder 18, the outer end of the transverse pull rod 28 is hinged to the upper end of the vertical pull rod 27, and the inner end of the transverse pull rod 28 is hinged to the lower end head of the lifting cylinder 11. The effect of taking up and unfolding the pull rod piece, firstly in order to connect lift section of thick bamboo 11 and rotatory head device 3 of taking off the slag, through the rotatory head device 3 of taking off the slag of lift section of thick bamboo 11 lift control expand or fold, another effect, this kind of structural design of the pull rod piece of taking up and unfolding, when rotatory head device 3 of taking off the slag expandes, through spacing of spacing ring 16 to horizontal pull rod 28 down to make vertical pull rod 27 and horizontal pull rod 28 spacing become the L type, rotatory head device 3 of taking off the slag is just fixed when expandes the rotation like this, prevent that rotatory head device 3 of taking off the slag from appearing rocking and influencing the operation of taking off the slag.
The lower limit ring 16 is arranged above the junction point of the transverse pull rod 28 and the lifting cylinder 11, when the transverse pull rod 28 is in a horizontal state, a gap of 0-1mm is reserved between the bottom surface of the lower limit ring 16 and the top surface of the transverse pull rod 28, and the gap is designed as small as possible, so that the lower limit ring 16 can limit the transverse pull rod 28 conveniently, but normal operation of the junction rotation of the transverse pull rod 28 and the lifting cylinder 11 must be ensured.
The corresponding rotary cylinder 12 below the mounting opening 20 is provided with a support ring 29, and after the rotary slag-raking head device 3 is horizontally unfolded, the support ring 29 is supported on the rotary slag-raking connecting cylinder 18 of the rotary slag-raking head device 3.
As shown in fig. 3, a slag collecting basket 30 is movably sleeved at the lower end of the rotary cylinder 12. The invention relates to a method for skimming slag by aluminum liquid, wherein a slag collecting basket 30 is movably sleeved at the lower end of a rotary cylinder 12, the slag collecting basket 30 is made of a grid plate, skimming equipment can be taken out from a hearth without scum by observing the liquid level of aluminum, at the moment, a rotary skimming head device 3 is firstly folded, each rotary skimming head device 3 rotates around a connecting rotating shaft 21 in the folding process of the rotary skimming head device 3, an outlet at the inner end of a rotary skimming connecting cylinder 18 of each rotary skimming head device 3 leads the scum downwards to the rotary cylinder 12 in an inclined way, the skimming basket 30 can be reused next time only by cleaning the slag collecting basket 30 after each time of skimming after the rotary cylinder 12 passes through the rotary cylinder 30, so that the rotary skimming head device 3 can not only be folded for realizing the folding, but also for collecting the scum, is convenient for centralized processing and really realizing the skimming automation, the convenience is realized, and the labor intensity of workers is greatly reduced. The refining additives can be placed into the slag collection basket 30 during slag skimming, so that the skimming and refining can be simultaneously completed.
As shown in fig. 8-10, the transmission connection box 9 includes an upper box 31 and a lower box 32, one side of the upper box 31 is provided with a bevel gear mounting opening 33, the upper box 31 is provided with a bevel gear mounting cavity 34, the upper end and the lower end of the upper box 31 are respectively provided with a bearing mounting hole 35, and the lower end of the upper box 31 is further provided with an upper limit spigot 36 of a rotary cylinder; a rotary cylinder mounting hole 37 is formed in the lower box body 32, and a rotary cylinder lower limiting spigot 38 is formed at the upper end of the lower box body 32; when the upper box body 31 and the lower box body 32 are assembled, the upper limit seam allowance 36 of the rotary cylinder body on the upper box body 31 is correspondingly buckled with the lower limit seam allowance 38 of the rotary cylinder body on the lower box body, and then the upper box body and the lower box body are connected into a whole through bolts.
The upper end of the rotary cylinder body 12 is provided with a limiting stop ring 39, the rotary cylinder body 12 below the limiting stop ring 39 is provided with a plane bearing 40, the limiting stop ring 39 is correspondingly arranged in the upper limiting spigot 36 of the rotary cylinder body, and the plane bearing 40 is correspondingly arranged in the lower limiting spigot 38 of the rotary cylinder body. The rotary cylinder 12 can be hung on the transmission connection box body 9 to rotate freely through the limit stop ring 39 and the plane bearing 40.
The rotary slag-raking connecting cylinder 18 comprises a square pipe joint section 41 and a slag-raking circular pipe section 42, wherein a closed blocking plate 43 is arranged at the outer end of the slag-raking circular pipe section 42, a flange plate 44 is arranged at the inner end of the slag-raking circular pipe section 42, one end of the square pipe joint section 41 is connected to the flange plate 44, and the other end of the square pipe joint section 41 is connected to the rotary cylinder 12 through a connecting rotating shaft 45; the top of the slag removing round pipe section 42 is provided with a slag inlet 21; the rotary drum 22 of the rotary slag raking head 19 is sleeved on the slag raking circular pipe section 42 to rotate.
The invention relates to a molten aluminum slagging-off method, when in use, whether a slag collecting basket 30 is cleaned or not is checked, when a rotary slagging-off head device 3 is in a closed state, one end with the rotary slagging-off head device 3 extends into a hearth through a furnace door opening, a slagging-off motor 1 starts to rotate forwards according to setting, before the slagging-off motor 1 starts to rotate forwards, a lifting cylinder 11 is in a rising state in a rotary cylinder body 12, when the slagging-off motor 1 rotates forwards, a lifting transmission shaft 10 drives the lifting cylinder 11 to descend in the rotary cylinder body 12 through threaded connection, the rotary cylinder body 12 does not rotate, when an upper limit ring 15 abuts against a lifting cylinder limit ring 17 at a set position, the lifting cylinder 11 cannot continue to descend, at the moment, the rotary slagging-off head device 3 can be completely unfolded in the hearth and is in a horizontal state, the lifting transmission shaft 10 continues to rotate, the lifting transmission shaft 10 can drive the lifting cylinder 11 and the rotary cylinder body 12, and then the three rotary slag raking head devices 3 are driven to rotate, at the moment, the rotary slag raking head devices 3 are placed on the liquid level of aluminum, namely about half of the rotary slag raking head devices 3 are under the liquid level, slag raking operation is started, a worker only needs to operate the slag raking operating rod 2 to enable the slag raking working faces formed by the three rotary slag raking head devices 3 to move back and forth on the liquid level to reach the liquid level as far as possible, through observation, the surface of the aluminum liquid is found to have no floating slag, the slag raking motor 1 is closed, the rotary slag raking head devices 3 are separated from the liquid level of the aluminum, the slag raking motor 1 is started to rotate reversely, the lifting transmission shaft 10 drives the lifting cylinder 11 to rise, at the moment, the rotary cylinder body 12 does not rotate (in practice, when the rotary slag raking head devices 3 are folded, the rotary cylinder body 12 may rotate reversely for several circles due to inertia, but normal folding cannot be influenced, so it is a normal phenomenon), when the rotating slag raking head device 3 is observed to rotate reversely, the rotating slag raking head device 3 is folded, the slag raking device is taken out from the hearth, the slag collection basket 30 is taken down to be cleaned (carefully high temperature), and the slag raking operation is finished.
Through the implementation of the scheme, the molten aluminum slagging-off method disclosed by the invention well solves the problems that the time for achieving the molten aluminum purification effect is long and the slagging-off effect is not good by adopting the existing slagging-off equipment and technology in the process of melting and refining the existing aluminum ingot in the melting furnace.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A molten aluminum slagging-off method is characterized by comprising the following steps:
step 1, arranging a slag-raking operating rod (2) to be of a tubular structure, arranging a transmission shaft (5) in the slag-raking operating rod (2), arranging umbrella teeth (6) at the outer end of the transmission shaft (5), arranging umbrella teeth (7) at the inner end of the transmission shaft (5), vertically arranging a slag-raking motor (1) at the outer end of the slag-raking operating rod (2), arranging motor umbrella teeth (8) on a rotating shaft of the slag-raking motor (1), and meshing and driving the motor umbrella teeth (8) and the umbrella teeth (6) at the outer end of the transmission shaft;
step 2, a slag raking head transmission device (4) is arranged, the slag raking head transmission device (4) comprises a transmission connection box body (9), a lifting transmission shaft (10), a lifting cylinder (11) and a rotary cylinder body (12), the outer side of the transmission connection box body (9) is connected to the inner end of a slag raking operation rod (2), the lifting transmission shaft (10) is arranged in the transmission connection box body (9), the lifting transmission shaft (10) is installed in the transmission connection box body (9) through two bearings (13), lifting transmission shaft umbrella teeth (14) are sleeved on the lifting transmission shaft (10), the lifting transmission shaft umbrella teeth (14) are in meshing transmission connection with the umbrella teeth (7) at the inner end of the transmission shaft, the lower end of the lifting transmission shaft (10) is connected into the lifting cylinder (11) through threads, the rotary cylinder body (12) is sleeved on the lower end of the lifting transmission shaft (10) and the lifting, the lifting cylinder (11) is limited in the rotary cylinder body (12) to move up and down, an upper limiting ring (15) and a lower limiting ring (16) are arranged on the outer wall of the lifting cylinder (11), a lifting cylinder limiting ring (17) is arranged on the inner wall of the rotary cylinder body (12) between the upper limiting ring (15) and the lower limiting ring (16), and the upper end of the rotary cylinder body (12) is rotatably arranged at the lower end part of the transmission connection box body (9);
step 3, three rotary slag raking head devices (3) are uniformly arranged at the lower end part of the rotary cylinder body (12) in a surrounding mode, each rotary slag raking head device (3) comprises a rotary slag raking connecting cylinder (18) and a rotary slag raking head (19), the inner end part of each rotary slag raking connecting cylinder (18) is inserted into a mounting port (20) formed at the lower end part of the rotary cylinder body (12), then each rotary slag raking connecting cylinder (18) and the lower end part of the rotary cylinder body (12) are inserted through a connecting rotating shaft (45), the outer end of each rotary slag raking connecting cylinder (18) is sealed, a slag inlet (21) is formed in the upper part of each rotary slag raking connecting cylinder (18), each rotary slag raking head (19) is sleeved on each rotary slag raking connecting cylinder (18), each rotary slag raking head (19) comprises a rotary cylinder (22), strip-shaped blades (23) and an arc-shaped slag filtering plate (24), and a plurality of strip-shaped, a cambered slag filtering plate (24) is arranged between the two strip-shaped blades (23), and a rotary drum slag inlet (25) is arranged on the rotary drum (22) corresponding to the inner side surface of the cambered slag filtering plate (24);
step 4, a folding and unfolding pull rod piece is arranged between each rotary slag raking head device (3) and the lower end of the lifting cylinder (11), and the lifting cylinder (11) pulls each rotary slag raking head device (3) to fold through the folding and unfolding pull rod piece by lifting the lifting cylinder (11);
step 5, when the rotary slag raking head device (3) is in a closed state, one end with the rotary slag raking head device (3) extends into a hearth through a furnace door opening, when the slag raking motor (1) rotates forwards, the lifting transmission shaft (10) drives the lifting cylinder (11) to descend in the rotary cylinder body (12) through threaded connection, when the upper limiting ring (15) abuts against the lifting cylinder limiting ring (17) at a set position, the lifting cylinder (11) cannot descend continuously, at the moment, the rotary slag raking head device (3) can be completely unfolded in the hearth and is in a horizontal state, the lifting transmission shaft (10) continues to rotate, the lifting transmission shaft (10) can drive the lifting cylinder (11) and the rotary cylinder body (12) to rotate synchronously, and then the three rotary slag raking head devices (3) can be driven to rotate;
step 6, placing the rotary slag raking head device (3) on an aluminum liquid surface, starting slag raking operation, enabling a slag raking working surface formed by three rotary slag raking head devices (3) to move back and forth on the liquid surface by operating a slag raking operating rod (2) by a worker, enabling the rotary slag raking head (19) to rotate on the rotary slag raking connecting cylinder (18) through the acting force of aluminum liquid on a strip-shaped blade (23) when the rotary slag raking head device (3) rotates on the liquid surface, enabling an arc-shaped slag filtering plate (24) to continuously collect floating slag on the liquid surface and slag suspended below the liquid surface on the inner side surface of the arc-shaped slag filtering plate (24) in the rotating process of the rotary slag raking head (19), enabling the slag to continuously slide from the inner side surface of the arc-shaped slag filtering plate (24) to enter a rotary drum slag inlet (25) towards the direction of the rotary drum (22) in the vertical state or close to the vertical state, and enabling the slag inlet (21) to be aligned with the upper part of the rotary slag raking connecting cylinder (18) when the rotary drum slag inlet (25), the slag body will get into and be collected in rotatory slagging-off connecting cylinder (18), through observing, discover that aluminium liquid surface does not have the dross, close slagging-off motor (1), make rotatory slagging-off head device (3) leave the aluminium liquid level, open slagging-off motor (1) reversal again, lift transmission shaft (10) will drive a lift section of thick bamboo (11) and rise, at this moment, rotatory barrel (12) do not take place to rotate, when observing that rotatory slagging-off head device (3) appear the reversal, accomplish promptly and draw in rotatory slagging-off head device (3) in, take out the slagging-off device from furnace and accomplish the operation of slagging-off promptly.
2. The molten aluminum slagging-off method according to claim 1, characterized in that: a plurality of transmission shaft erection plates (26) are uniformly distributed in the slag-raking operation rod (2), and the transmission shaft (5) is inserted in the transmission shaft erection plates (26).
3. The molten aluminum slagging-off method according to claim 1, characterized in that: the folding and unfolding pull rod piece comprises a vertical pull rod (27) and a transverse pull rod (28), the lower end of the vertical pull rod (27) is fixedly connected to the inner end part of the rotary slag-raking connecting cylinder (18), the outer end of the transverse pull rod (28) is hinged to the upper end of the vertical pull rod (27), and the inner end of the transverse pull rod (28) is hinged to the lower end of the lifting cylinder (11);
the lower limiting ring (16) is arranged above the junction of the transverse pull rod (28) and the lifting cylinder (11), and when the transverse pull rod (28) is in a horizontal state, a gap of 0-1mm is reserved between the bottom surface of the lower limiting ring (16) and the top surface of the transverse pull rod (28).
4. The molten aluminum slagging-off method according to claim 1, characterized in that: the lower end of the lifting cylinder (11) is sealed.
5. The molten aluminum slagging-off method according to claim 1, characterized in that: a support ring (29) is arranged on the corresponding rotary cylinder body (12) below the mounting opening (20), and after the rotary slag-raking head device (3) is horizontally unfolded, the support ring (29) is supported on the rotary slag-raking connecting cylinder (18) of the rotary slag-raking head device (3).
6. The molten aluminum slagging-off method according to claim 1, characterized in that: the lower end of the rotary cylinder body (12) is movably sleeved with a slag collecting basket (30).
7. The molten aluminum slagging-off method according to claim 1, characterized in that: the transmission connecting box body (9) comprises an upper box body (31) and a lower box body (32), one side of the upper box body (31) is provided with an umbrella tooth mounting opening (33), an umbrella tooth mounting cavity body (34) is arranged in the upper box body (31), the upper end part and the lower end part of the upper box body (31) are respectively provided with a bearing mounting hole (35), and the lower end part of the upper box body (31) is also provided with an upper limiting spigot (36) of a rotary cylinder body; a rotary cylinder mounting hole (37) is formed in the lower box body (32), and a rotary cylinder lower limiting spigot (38) is formed in the upper end of the lower box body (32); when the upper box body (31) and the lower box body (32) are assembled, an upper limiting seam allowance (36) of a rotary cylinder body on the upper box body (31) is correspondingly buckled with a lower limiting seam allowance (38) of a rotary cylinder body on the lower box body, and then the upper limiting seam allowance and the lower limiting seam allowance are connected into a whole through bolts;
the rotary barrel is characterized in that a limiting stop ring (39) is arranged on the upper end of the rotary barrel (12), a plane bearing (40) is arranged on the rotary barrel (12) below the limiting stop ring (39), the limiting stop ring (39) is correspondingly installed in a limiting spigot (36) on the rotary barrel, and the plane bearing (40) is correspondingly installed in a limiting spigot (38) under the rotary barrel.
8. The molten aluminum slagging-off method according to claim 1, characterized in that: the rotary slag-raking connecting cylinder (18) comprises a square pipe joint section (41) and a slag-raking circular pipe section (42), a sealing blocking plate (43) is arranged at the outer end of the slag-raking circular pipe section (42), a flange plate (44) is arranged at the inner end of the slag-raking circular pipe section (42), one end of the square pipe joint section (41) is connected to the flange plate (44), and the other end of the square pipe joint section (41) is connected to the rotary cylinder body (12) through a connecting rotating shaft (45); the top of the slag removing round pipe section (42) is provided with a slag inlet (21); the rotary drum (22) of the rotary slag raking head (19) is sleeved on the slag raking circular pipe section (42) to rotate.
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| CN111457739A (en) * | 2020-05-21 | 2020-07-28 | 华北理工大学 | Slag removing device for magnesium smelting in factory |
| CN114226706B (en) * | 2021-12-30 | 2023-03-28 | 万丰镁瑞丁新材料科技有限公司 | Automatic slagging-off device of die-casting |
| CN116790895B (en) * | 2023-07-01 | 2024-02-02 | 常州市凯宏铝业有限公司 | Method for removing impurities from waste aluminum materials in production of regenerated aluminum plates |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56160868A (en) * | 1980-05-15 | 1981-12-10 | Kubota Ltd | Scum removing method for ladle |
| JPS61246305A (en) * | 1985-04-22 | 1986-11-01 | Sumitomo Metal Ind Ltd | Method and apparatus for removing slag from molten metal |
| JPH0569115A (en) * | 1991-09-13 | 1993-03-23 | Nkk Corp | Device for stirring slag in ladle |
| JPH06264154A (en) * | 1993-03-11 | 1994-09-20 | Kobe Steel Ltd | Method for removing slag from molten al or al alloy and method for recovering metal content from slag |
| EP1745873A1 (en) * | 2005-07-22 | 2007-01-24 | Sanki Dengyo Co., Ltd. | Method and device for removing slag |
| CN202621914U (en) * | 2012-06-11 | 2012-12-26 | 湖北金洋冶金股份有限公司 | Slag conveyor |
| CN205057043U (en) * | 2015-10-09 | 2016-03-02 | 江西源丰有色金属有限公司 | That is applied to clearance alloying furnace dross drags for sediment spiral |
| CN108580870A (en) * | 2018-02-02 | 2018-09-28 | 昆明理工大学 | A kind of lead skim device for dragging dregs |
-
2019
- 2019-09-25 CN CN201910910208.XA patent/CN110508798B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56160868A (en) * | 1980-05-15 | 1981-12-10 | Kubota Ltd | Scum removing method for ladle |
| JPS61246305A (en) * | 1985-04-22 | 1986-11-01 | Sumitomo Metal Ind Ltd | Method and apparatus for removing slag from molten metal |
| JPH0569115A (en) * | 1991-09-13 | 1993-03-23 | Nkk Corp | Device for stirring slag in ladle |
| JPH06264154A (en) * | 1993-03-11 | 1994-09-20 | Kobe Steel Ltd | Method for removing slag from molten al or al alloy and method for recovering metal content from slag |
| EP1745873A1 (en) * | 2005-07-22 | 2007-01-24 | Sanki Dengyo Co., Ltd. | Method and device for removing slag |
| CN202621914U (en) * | 2012-06-11 | 2012-12-26 | 湖北金洋冶金股份有限公司 | Slag conveyor |
| CN205057043U (en) * | 2015-10-09 | 2016-03-02 | 江西源丰有色金属有限公司 | That is applied to clearance alloying furnace dross drags for sediment spiral |
| CN108580870A (en) * | 2018-02-02 | 2018-09-28 | 昆明理工大学 | A kind of lead skim device for dragging dregs |
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Effective date of registration: 20200612 Address after: 553600 in the plant area of Guizhou Shuangyuan Aluminum Co., Ltd., Shuicheng Economic Development Zone, Liupanshui City, Guizhou Province Applicant after: Guizhou yingyuefan aluminum products Co.,Ltd. Address before: 641200 No. 41, Group 7, Bazi Village, Chestnut Ya Township, Zizhong County, Neijiang City, Sichuan Province Applicant before: Yang Jiazhi |
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Denomination of invention: A slag raking method for molten aluminum Effective date of registration: 20220630 Granted publication date: 20200707 Pledgee: Industrial Bank Co.,Ltd. Guiyang Branch Pledgor: Guizhou yingyuefan aluminum products Co.,Ltd. Registration number: Y2022520000028 |
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Date of cancellation: 20230807 Granted publication date: 20200707 Pledgee: Industrial Bank Co.,Ltd. Guiyang Branch Pledgor: Guizhou yingyuefan aluminum products Co.,Ltd. Registration number: Y2022520000028 |