CN102925604B - Blast furnace charge-flow adjusting valve device suitable for high-temperature furnace charge - Google Patents
Blast furnace charge-flow adjusting valve device suitable for high-temperature furnace charge Download PDFInfo
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- CN102925604B CN102925604B CN201210449978.7A CN201210449978A CN102925604B CN 102925604 B CN102925604 B CN 102925604B CN 201210449978 A CN201210449978 A CN 201210449978A CN 102925604 B CN102925604 B CN 102925604B
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Abstract
The invention relates to a blast furnace charge-flow adjusting valve device suitable for high-temperature furnace charge. The blast furnace charge-flow adjusting valve device suitable for the high-temperature furnace charge mainly comprises a valve body, an inner valve plate, an outer valve plate, an inner shell, a wear resistant liner, transmission shafts and an oil cylinder drive device, wherein the inner valve plate and the outer valve plate are arranged inside the valve body. A driving device is arranged on one side of the external of the valve body, a driving device is arranged on the other side of the external of the valve body, each driving device is connected with one transmission shaft independently, and the two transmission shafts oppositely and respectively stretch into the valve body in a straight line. The outer valve plate and the inner valve plate are sequentially connected to each transmission shaft from the end to the inside, the left end of the outer valve plate is connected with the inner side end of the left side transmission shaft through splines, the right end of the outer valve plate is supported on the inner side end of the right side transmission shaft, the left end of the inner valve plate is supported on the inner side end of the left side transmission shaft, and the right end of the inner valve plate is connected with the inner side end of the right side transmission shaft through splines. The blast furnace charge-flow adjusting valve device suitable for the high-temperature furnace charge is small in size, firm in structure and convenient to mount and arrange, can be conveniently used to accurately adjust the furnace charge, and can be simultaneously suitable for blast furnaces with parallel hoppers and blast furnaces with hoppers connected in series. By means of the blast furnace charge-flow adjusting valve device suitable for the high-temperature furnace charge, the high-temperature protection problem of sealing components in a high temperature environment can be effectively solved, and the occurrence rate of operational failure can be effectively lowered.
Description
Technical field
The present invention relates to metallurgical ironmaking technology field, relate in particular to a kind of blast furnace material flow gate device that is applicable to high-temp. furnace material.
Background technology
Material flow gate is one of equipment important in ironmaking production processing line, is arranged in the below of batch can, the top of lower sealing valve, and its Main Function is exactly that the material stream of batch can is regulated, to meet the cloth requirement of distributor.For valve board structure and the valve plate type of drive of blast furnace material flow gate, there is at present various structures form.At present for the single hydraulic oil cylinder driving of the many employings of blast furnace material flow gate, drive oil cylinder to be installed on valve body, rotate to certain position by the valve plate that drives rotarily driving of oil cylinder to be positioned at blanking interior lining panel below, make to open a material mouthful below blanking interior lining panel, from then on blast furnace burden just falls into blast furnace in material mouth.This kind of mode is difficult to the material stream in batch can to realize fine adjustment.In addition, owing to adopting single valve plate to expect that stream regulates, the segregation of material stream is larger, cannot realize the accurate Centering compensation of material stream.
In addition, also have at present technical scheme to adopt middle major axis of a hydraulic oil cylinder driving, middle major axis drives respectively the linkage assembly reversing motion of the left and right sides to realize opening and closure of a pair of valve plate, thereby realizes the adjusting of material stream.Under this structure, each valve plate needs to support non-drive side suspension arm on the suspension arm of driving side, thereby need strict calculate and design forward direction valve plate and the axial spacing of backward valve plate between each suspension arm of the same side and each suspension arm angle of inclination to avoid the mutual intersection-type collision of suspension arm of homonymy, design, manufacture and mounting process complexity, and there is larger error, be difficult to realize the accurate control of material stream.In addition, under this structure, the middle major axis of driving mechanism is longer, processing difficulties, and cost is larger.In addition, owing to adopting single compact type list hydraulic oil cylinder driving, be subject to the impact of self valve plate size, the blast furnace operating mode that the capacity that is only applicable to is little, and the left and right sides is due to mechanism design error, cannot make material flow down material entirely on the center, has certain segregation.Finally, each valve plate suspension arm is connected with each side transmission shaft and all adopts screw to connect, and is difficult to adapt to the work operating mode of high-temp. furnace material.
In addition, generally, the furnace charge in batch can is cold conditions, but current material flow gate is only for conventional cold burden design, and during for high-temp. furnace material, due to the protection Cooling Design there is no need, one-piece construction is too thin.Thereby the material flow gate of conventional design does not have adaptive for high-temp. furnace material.When Research for Feeding Raw Materials System transport be hot high-temp. furnace material time, the each components interior of whole blast furnace system all must be carried out heat insulation protection Design.Otherwise the temperature of each parts surface can be very high, directly affects operational safety.How to make the associated components of material flow gate device in hot environment, can normally move and realize the design function of this device, this is a quite thorny design challenges really.
Summary of the invention
The technical problem to be solved in the present invention is: for the technical problem of above-mentioned existence, a kind of blast furnace material flow gate device that is applicable to high-temp. furnace material is provided, little and the stabilized structure of volume, be convenient to install and can facilitate accurately material stream is regulated to control, arrangement convenience can be applicable to and tank blast furnace and string tank blast furnace simultaneously; The high temperature protection problem that can effectively solve hot environment lower seal, reduces operation troubles incidence conscientiously.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A blast furnace material flow gate device that is applicable to high-temp. furnace material, mainly comprises inside and outside valve plate, inner housing and abrasion-proof backing block, transmission shaft and cylinder drive in valve body, valve body; It is characterized in that: valve body both sides external respectively arranges a drive unit, each side drive device connects separately a transmission shaft, and two transmission shaft straight lines relatively stretch into respectively in valve body, the termination of each side transmission shaft toward interior all connect successively outside valve plate and interior valve plate; Outer valve plate left end is connected with the medial extremity of left side drive shafts by spline, and outer valve plate right-hand member is bearing on the medial extremity of right side transmission shaft; Interior valve plate left end is bearing on the medial extremity of left side drive shafts, and interior valve plate right-hand member is connected with the medial extremity of right side transmission shaft by spline; Before and after inside and outside valve plate, fasten, opening down with the match valve pocket that forms of the lower end of inner housing and abrasion-proof backing block; Opening symmetry before and after valve plate and outer valve plate in opening process.
By technique scheme, outer valve plate left end and interior valve plate right-hand member are separately by the spline joint on spline housing and place side transmission shaft; Interior valve plate left end and outer valve plate right-hand member separately by sleeve supporting on the side transmission shaft of place; Each spline housing and each axle sleeve are separately fixed at side valve Ban center, place; Each side transmission shaft medial extremity is all fixedly connected with an axle end baffle plate; Between interior valve plate right-hand member and outer valve plate right-hand member, be provided with end play, between outer valve plate right-hand member and right side purge passage, be also provided with end play, outer valve plate right-hand member and interior valve plate right-hand member can axially move to right in the time of valve plate temperature distortion on the transmission shaft of right side, and outer valve plate left end and the equal axial restraint of interior valve plate left end.
By technique scheme, the outboard end center of each side transmission shaft has a blind hole shape water-cooling channel, is positioned at aperture place and packs swivel joint in this hole, and swivel joint links together by the first bolt assembly and the transmission shaft of axial setting; Swivel joint arranges Inlet and outlet water access port, and the water-cooling channel at Bing Yuzhou center forms refrigeration cycle passage.
By technique scheme, on valve body mid-section body inwall, heat-insulating heat-preserving material is set, in heat-insulating heat-preserving material, burying blow device underground is also the reserved purge hole of blow device and purging path; Described blow device is multiple independent parallel settings the circular channel taking center transmission shaft as rotation center, and one end of circular channel is stretched out and passed valve body from annular and is connected with outside air supply plant; On circular channel, interval arranges gas hole, and gas hole arrives setting purging region by purging path respectively.
By technique scheme, blow device is mainly made up of the purge passage of two independent parallels; The each free steel pipe dish of first and second purge passage becomes a center taking transmission shaft as rotation center circular channel, and one end, circular channel is stretched out through valve body and is connected with outside air supply plant from annular; First and second purge passage reduction of fractions to a common denominator Tong Guo the first and second Plate Weldings in valve body mid-section body; The first and second steel plates are fixed on valve interior wall; In the first purge passage, face toward high-temp. furnace material one side, be provided with multiple cone shape slotted holes along the circumferential direction of circular passage is evenly spaced apart, each cone slotted hole Liang Geyuan center respectively with the first purge passage perpendicular vertically and horizontal center line be angle setting; The second purge passage facing to high-temp. furnace material one side, is offered two circular cone body openings along the circumferential direction of circular passage every one section of setpoint distance, the hole circle center of these two cones respectively with the second purge passage perpendicular vertically and horizontal center line be angle setting.
By technique scheme, each side transmission shaft is fixed on valve body by bearing support, each side transmission shaft from outer toward interior pass bearing support and with the most contiguous step of bearing support on, a permanent seat is set, permanent seat is connected with transmission shaft by screw assembly; Filling heat insulation preservation material between the inner side of permanent seat and transmission shaft.
By technique scheme, the large flange of bearing support outside casts out a boss, has two holes: prosopyle and posticum on this boss; Have bearing support cooling trough at bearing support near blast furnace burden side, this bearing support cooling trough middle part is provided with a dividing plate, and prosopyle and posticum are close to respectively dividing plate setting and are positioned at dividing plate both sides.
By technique scheme, valve body mid-section body upper and lower ends all arranges blast furnace material flow gate device is fixedly connected on to the flange on blast furnace, upper flange and lower flange all arrange bailey wall, the bailey wall of each flange all forms an annular space along valve body mid-section body central rotation, in the middle of space, a water-stop sheet is all set, water-in and water outlet are close to respectively water-stop sheet setting and are positioned at water-stop sheet both sides.
By technique scheme, inner housing and abrasion-proof backing block are mainly made up of upper abrasion-proof backing block, lower abrasion-proof backing block and inner housing; Inner housing is made up of upper and lower two portions, and top is funnel housing, and bottom is cylindrical shell; On funnel housing, offer respectively circumferential uniform bolt hole, oblong aperture and four square holes separately; Funnel housing outer wall be designed with respectively two circles between the upper and lower every the boss in full circle week; Bolt hole is through upper circle boss; Upper abrasion-proof backing block is the coniform ring body that can be placed in the upper funnel housing of inner housing, the outer wall of each upper abrasion-proof backing block has two small boss and a upper abrasion-proof backing block hangers, the bolt hole of boss and inner housing fits tightly, and upper abrasion-proof backing block hangers is connected as a single entity inner housing and upper abrasion-proof backing block through the oblong aperture on inner housing the bolt assembly in fitted bolt hole; Upper abrasion-proof backing block is processed into multi-disc, all leaves the gap that holds abrasion-proof backing block expanded by heating between every; The inwall of each upper abrasion-proof backing block is provided with hanger; Lower abrasion-proof backing block is the cylindrical shell shell that can be placed in the bottom cylindrical shell of inner housing, and lower abrasion-proof backing block cylindrical shell shell upper limb outer wall is uniform four casting lug thereons circumferentially, and lower abrasion-proof backing block inserts by casting lug thereon in four square holes of inner housing and is connected with inner housing.
By technique scheme, each transmission shaft is arranged in bearing support by two bearings arranged side by side, between two bearings, separates by spacer ring; Outer, the inner side of bearing support is connected with valve body mid-section body by the 4th bolt assembly, and the first O-ring seals is set on bearing support medial surface and valve body mid-section body seals; The inner side-wall of bearing support is along being connected with inner side the first door by the second bolt assembly, and the first sealing member is arranged between transmission shaft, bearing support and the first door; Outer, the outside of bearing support is connected with the second door by the 3rd bolt assembly, and the 3rd O-ring seals is set on bearing support outer side and the second door seals; The outer side of the second door is connected with outside the first door by the second bolt assembly, between the central inner of outside the first door and transmission shaft, spacer ring is also set, and the second sealing member is arranged in the space between spacer ring and outside the first door; The inner ring butt of the medial extremity of spacer ring and outer bearing, the outboard end of spacer ring stretches out outside the first door outboard end and is connected to the center ring medial extremity of actuating arm; Transmission shaft is fixed in the center ring of actuating arm, and sets gradually cushion block, locked spacer and big nut through after the center ring of actuating arm.
By technique scheme, in each cylinder drive, oil cylinder head links together by bearing pin and actuating arm, and oil cylinder middle part gudgeon is hinged by oil cylinder gudgeon flap and cylinder support, and cylinder support is welded in valve body mid-section body.
Due to the singularity of Working environment, in the time of the blast furnace material flow gate device design that is applicable to high-temp. furnace material, need to adopt the high temperature safeguard procedures such as cooling, purging and radioprotective, reduce as much as possible the local temperature of material flow gate associated components, each parts are all worked within the scope of tolerable temperature, thereby make material flow gate entirety reach design function, this work-ing life and reliability to material flow gate has great help.The high temperature safeguard procedures such as that the present invention adopts is cooling, purging and radioprotective; develop a kind of blast furnace material flow gate device that is applicable to high-temp. furnace material; can make sealing member local temperature unlikely too high, can effectively protect related components, the safe operation of support equipment.
The present invention has the following advantages and positively effect:
(1) relative traditional design, valve flange adopts water-cooled, arranges heat insulation and purge structure in valve body, and transmission shaft adopts water-cooling structure, effectively reduces the deformation effect that transmission shaft and valve plate high-temperature heating cause; Be suitable for the blanking operating mode of high-temp. furnace material, can effectively at high temperature protect related components part, reduce local temperature, connect effect better.Adopt cooling, the purging of water cycle and Anti-Radiation Countermeasures, the sealing member of temperature end can be worked under nominal situation, effectively prevent overflowing of blast furnace gas, can ensure the security that under hot environment, blast furnace is produced.
(2) adopting two oil cylinders to be positioned at both sides drives separately, both sides valve plate is not connected with each side transmission shaft and mutually interferes, design, manufacture and installation procedure are simplified, little and the stabilized structure of arrangement convenience, volume, be convenient to material stream to regulate control, control simply, transmission is accurate, can avoid preferably producing larger material stream segregation phenomena; Can be applicable to and tank blast furnace and string tank blast furnace simultaneously.
(3) the each side transmission shaft of the present invention with under valve plate high temperature, be connected reliably, can absorb local thermal expansion by the compensation of self, can not form local internal stress, in each axle and valve plate syndeton, owing to adopting spline that each valve plate is connected respectively with axle, be convenient on the one hand easy disassembly, centering is good, can transmit larger moment of torsion, can adapt to the strong needs that large capacity blast furnace regulates material stream, on the other hand, in the time of whole valve plate temperature distortion, in junction, the thermal expansion distortion that spline is a part of because self-compensation situation function can absorb, and this hardwired mode of available technology adopting screw is connected the suspension arm on each valve plate with transmission shaft, can not carry out self-compensating to the thermal expansion of component under high temperature, likely also can form larger internal stress, thereby this screw connects the blast furnace operating mode that is not suitable for high-temp. furnace material.In addition, in the time of whole valve plate temperature distortion, because the right side of outer valve plate and interior valve plate is also that two valve plates and transmission shaft junction, right side are free, can be overall along right side transmission shafts to small movements, thus realize the distortion buffering that overall thermal expands.
(4) valve plate adopts hub splines to be connected with axle, avoids preferably the cost allowance of integral replacing; Being linked and packed, it is quick to change, and laying construction is easy, safe, has reduced the personal risk while changing component under operator's labour intensity and high temperature.
Brief description of the drawings
Fig. 1 is according to material flow gate apparatus structure schematic diagram of the invention process (stereographic map);
Fig. 2 is material flow gate device part sectioned view of the present invention (left side);
Fig. 3 is the part sectioned view (left and right sides) of material flow gate device of the present invention;
Fig. 4 is the local bearing support of the C of Fig. 2 and axle assembled portion enlarged view;
Fig. 5 is the A partial enlarged drawing of Fig. 2;
Fig. 6 is the B partial enlarged drawing of Fig. 2;
Fig. 7 is that the K of Fig. 5 is to partial view;
Fig. 8 is that the intake-outlet of bearing support of the present invention is arranged schematic diagram;
Fig. 9 is the circumferential layout of the first purge passage 19 of the present invention and the second purge passage 22;
Figure 10 is lower abrasion-proof backing block schematic three dimensional views of the present invention;
Figure 11 is inner housing schematic three dimensional views of the present invention;
Figure 12 is upper abrasion-proof backing block schematic three dimensional views of the present invention;
Figure 13 is left side drive shafts of the present invention and two valve plate syndeton schematic diagram (the local P enlarged view of Fig. 3);
Figure 14 is right side of the present invention transmission shaft and two valve plate syndeton schematic diagram (the local M enlarged view of Fig. 3).
Embodiment
Below in conjunction with accompanying drawing 1-14 and following examples, the invention will be further described, but do not limit the present invention.
As Fig. 1-14, mainly formed by valve body, cylinder drive (or also can be changed to motor driver), bearing support assembling, blow device, liner plate assembling and valve plate assembling etc. according to the blast furnace material flow gate device that is applicable to high-temp. furnace material of the invention process.
As Fig. 1 and 2, valve body is welded to each other and is formed by valve body mid-section body 5, upper flange 1, upper flange intake-outlet 2, upper flange bailey wall 18, lower flange bailey wall 27, lower flange intake-outlet 6 and lower flange 7.On upper flange 1 and lower flange 7 circumference, have bolt hole, make material flow gate device, can be connected with top, other component of bottom by bolt assembly.As Figures 1 and 4, upper flange bailey wall 18 forms a hollow ring space along valve body mid-section body 5 central rotations, in empty annular space, weld hereinto a right-angle triangle steel plate, a square edge of right-angle triangle steel plate is welded in the below of upper flange 1, and another square edge is welded in valve body mid-section body 5.Upper flange intake-outlet 2 by two steel-pipe weldings on upper flange bailey wall 18, one is water-in, one is water outlet, lay respectively at the both sides of the right-angle triangle steel plate for separating the hollow ring space that upper flange bailey wall 18 rotation generates and be close to this steel plate setting, like this when cold water is from water-in enters, flow out by water outlet again after one week along upper flange bailey wall 18 circumferential flow, form the circulation waterway of a sealing, thereby play the effect of local cooling.
Equally, lower flange bailey wall 27 also forms a hollow ring space along valve body mid-section body 5 central rotations, in empty annular space, weld hereinto a right-angle triangle steel plate, a square edge of right-angle triangle steel plate is welded in the top of lower flange 7, and hypotenuse is welded in valve body mid-section body 5; Lower flange intake-outlet 6 by two steel-pipe weldings on lower flange bailey wall 27, one is water-in, one is water outlet, lay respectively at the both sides of the right-angle triangle steel plate for separating the hollow ring space that lower flange bailey wall 27 rotation generates and be close to this steel plate setting, like this when cold water is from water-in enters, flow out by water outlet again after one week along lower flange bailey wall 27 circumferential flow, form the circulation waterway of a sealing, thereby play the effect of local cooling.
Shearing pin support 11 is welded on valve body, has a through hole that can insert shearing pin 12 on shearing pin support 11.
Cylinder drive lays respectively at the material flow gate device relative left and right sides that is in line.Left and right sides oil cylinder set-up mode is identical, and oil cylinder 3 heads link together by bearing pin 24 and actuating arm 9, and oil cylinder 3 middle part gudgeons are hinged by oil cylinder gudgeon flap 10 and cylinder support 4, and cylinder support 4 is welded in valve body mid-section body 5.
As Fig. 4-6, bearing support assembly structure left and right is identical, is all mainly made up of the first bolt assembly 23, the second bolt assembly 30, the first sealing member 31, the first O-ring seals 32, bearing 33, spacer ring 34, the first door 35, the second O-ring seals 36, big nut 37, locked spacer 38, swivel joint 39, cushion block 40, spacer ring 41, the second sealing member 42, the 3rd bolt assembly 43, the 3rd O-ring seals 44, the second door 45, bearing support 46, the 4th bolt assembly 47 and both sides transmission shaft 48.1 and 48.2 etc.Each transmission shaft 48.1(or 48.2) be arranged in bearing support 46 by two bearings 33 arranged side by side, 33 of two bearings separate by the spacer ring 34 being arranged in bearing support 46; Outer, the inner side of bearing support 46 is connected with valve body mid-section body 5 by the 4th bolt assembly 47, and the first O-ring seals 32 is set on bearing support 46 medial surfaces seals with valve body mid-section body 5; The inner side-wall of bearing support 46 is along being connected with inner side the first door 35 by the second bolt assembly 30, and the first sealing member 31 is arranged on transmission shaft 48.1(or 48.2), between bearing support 46 and the first door 35; The outer, outside of bearing support 46 is connected with the second door 45 by the 3rd bolt assembly 43, and the 3rd O-ring seals 44 is set on bearing support 46 outer sides and the second door 45 seals; The outer side of the second door 45 is connected with outside the first door 35 by the second bolt assembly 30, central inner and the transmission shaft 48.1(or 48.2 of outside the first door 35) between spacer ring 41, the second sealing members 42 be also set be arranged in the space between spacer ring 41 and outside the first door 35; The inner ring butt of the medial extremity of spacer ring 41 and outer bearing 33, the outboard end of spacer ring 41 stretches out outside the first door 35 outboard ends and is connected to the center ring medial extremity of actuating arm 9; Transmission shaft 48.1(or 48.2) be fixed in the center ring of actuating arm 9, and set gradually cushion block 40, locked spacer 38 and big nut 37 through after the center ring of actuating arm 9.Wherein the first sealing member 31, the first O-ring seals 32, the second O-ring seals 36, the 3rd O-ring seals 44 and the second sealing member 42 are mainly to prevent from that blast furnace gas from coming out to cause security incident.
As Fig. 2-4, each transmission shaft 48.1(or 48.2) center, one end that is positioned at outside valve body has a hole all not penetrating or blind hole, aperture place in this hole packs swivel joint 39 into, and swivel joint 39 is by the first bolt assembly 23 and 48.1(or 48.2 axially arranging) link together.Inlet and outlet water by swivel joint 39 forms a refrigeration cycle process, thereby reaches the object of cooling transmission shaft and shaft attachment temperature.At each transmission shaft 48.1(or 48.2) toward interior projecting shaft bearing 46 and with the most contiguous step of bearing support 46 on, a permanent seat 50 is set, permanent seat 50 is connected with transmission shaft by screw assembly.Filling heat insulation preservation material 17 between the inner side of permanent seat 50 and transmission shaft, less in order to ensure the ventilation of local location blast furnace gas, be convenient to carry out local temperature thermal insulation protection by gas curtain.
As Fig. 2-4, valve plate assembling is made up of with outer valve plate 28 interior valve plate 29.Outer valve plate 28 links together with left side drive shafts 48.1 by outer valve plate spline 59, interior valve plate 29 links together with right side transmission shaft 48.2 by interior valve plate spline 60, the opening down setting of valve plate and match and form the valve pocket (Figure 4 and 5 all omit not shown) that holds material stream with the lower end of inner housing 16 and lower abrasion-proof backing block 14, profile can be done camber, also can do other forms such as diamondwise, but valve plate 29 is as far as possible symmetrical with outer valve plate 28 front and back opening in opening process in needing to ensure, less to ensure the material stream segregation of blast furnace burden.In the time that two valve plates are closed, interior valve plate 29 is completely closed with the necessary guarantee of outer valve plate 28, and imperforation, prevents that blast furnace burden from overflowing.
As Fig. 3 and 13, in valve body, left side drive shafts 48.1 right parts (medial extremity) from outer toward interior all successively connect outside valve plate 28 and interior valve plate 29.Outer left side drive shafts 48.1 with the syndeton of each valve plate is: outer valve plate 28 centers and left side drive shafts 48.1 junctions are split into stepped bore, and the stepped bore inwall that the first spline inner sleeve 66 outer walls are pasting outer valve plate 28 is welded in this hole; The inwall that outside valve plate spline 59, the first spline inner sleeves 66 of week are processed in the medial extremity periphery of left side drive shafts 48.1 and outer valve plate 28 junctions is connected and fixed with left side drive shafts 48.1 by outer valve plate spline 59.Radially circumferentially be evenly equipped with three straight pins 67 along transmission shaft in middle part in the first spline inner sleeve 66, straight pin 67 along transmission shafts to from left to right one insert in the first spline inner sleeve 66 respective aperture, insert in the corresponding hole of outer valve plate 28 other end.Its Main Function is the local strength of joint for strengthening the first spline inner sleeve 66 and outer valve plate 28.In the time that spline has concentrated wear, the first spline inner sleeve 66 can be taken away to rear heavy table and change to the first new spline inner sleeve 66, thereby avoid in whole outer valve plate 28 is changed.The junction of interior valve plate 29 centers and right side transmission shaft 48.2 is also split into stepped bore, wears into the first axle sleeve 65, by interior valve plate 29 and the first axle sleeve 65 being fixed together along the circumferential equally distributed pin 64 of transmission shaft in this hole; The medial extremity of left side drive shafts 48.1 stretches in the first axle sleeve 65, and interior valve plate 29 is supported on and in left side drive shafts 48.1, is can't help left side drive shafts 48.1 and drive by the first axle sleeve 65.The first baffle plate 62 is installed in the right side of left side drive shafts 48.1, by the first screw assembly 63, the first baffle plate 62 is fixed together with left side drive shafts 48.1.Thus, left side drive shafts 48.1 drives outer valve plate 28 front and back to stir by being fixedly connected with of outer valve plate spline 59.
As Fig. 3,14, in valve body, the left part of right side transmission shaft 48.2 (medial extremity) from outer toward interior all successively connect outside valve plate 28 and interior valve plate 29.Right side transmission shaft 48.2 with the syndeton of each valve plate is: the junction of outer valve plate 28 centers and right side transmission shaft 48.2 is split into stepped bore, in this hole, wear into the second axle sleeve 70, by outer valve plate 28 and the second axle sleeve 70 being fixed together along circumferential equally distributed the first screw assembly 71 of transmission shaft; Right side transmission shaft 48.2 is through the second axle sleeve 70, and outer valve plate 28 is supported on and on right side transmission shaft 48.2, is can't help right side transmission shaft 48.1 and drive by the second axle sleeve 70.Interior valve plate 29 centers and right side transmission shaft 48.2 junctions are also split into stepped bore, and in the second spline inner sleeve 69 outer walls are pasting, the stepped bore inwall of valve plate 29 is welded in this hole; The inwall that circumferentially interior valve plate spline 60, the second spline inner sleeves 69 are processed in the medial extremity periphery of right side transmission shaft 48.2 and outer valve plate 28 junctions is connected and fixed with right side transmission shaft 48.2 by interior valve plate spline 60.Radially circumferentially be evenly equipped with three straight pins 67 along transmission shaft in middle part in the second spline inner sleeve 69, straight pin 67 along transmission shafts to from right to left one insert in the second spline inner sleeve 69 respective aperture, other end insert in the corresponding hole of valve plate 28.Its Main Function is the local strength of joint for strengthening the second spline inner sleeve 69 and interior valve plate 29.In the time that spline has concentrated wear, the second spline inner sleeve 69 can be taken away to rear heavy table and change to the second new spline inner sleeve 69, thereby avoid in whole interior valve plate 29 is changed.In the left side of right side transmission shaft 48.2, second baffle 68 is installed, by the first screw assembly 63, second baffle 68 and right side transmission shaft 48.2 is fixed together.Thus, right side transmission shaft 48.2 drives interior valve plate 29 front and back to stir by being fixedly connected with of interior valve plate spline 60.
In the each axle shown in Fig. 3,13 and 14 and valve plate syndeton, after left side drive shafts is driven, drive outer valve plate rotation by spline joint, and interior valve plate forms support and connection by axle sleeve and left side drive shafts.After right side transmission shaft is driven, valve plate rotation in driving by spline joint, and outer valve plate forms support and connection by axle sleeve and right side transmission shaft.In the time that two axles rotate on the contrary, outer valve plate and interior valve plate open to both sides respectively, regulate thereby form material stream.
At Fig. 3, in each axle shown in 13 and 14 and valve plate syndeton, owing to adopting spline that each valve plate is connected respectively with axle, be convenient on the one hand easy disassembly, centering is good, can transmit larger moment of torsion, can adapt to the strong needs that large capacity blast furnace regulates material stream, on the other hand, in the time of whole valve plate temperature distortion, on the one hand in junction, the thermal expansion distortion that spline is a part of because self-compensation situation function can absorb, and this hardwired mode of available technology adopting screw is connected the suspension arm on each valve plate with transmission shaft, can not carry out self-compensating to the thermal expansion of component under high temperature, likely also can form larger internal stress, thereby this screw connects the blast furnace operating mode that is not suitable for high-temp. furnace material.
In addition, because the right-hand member of outer valve plate and interior valve plate is also that two valve plates and transmission shaft junction, right side are free, and between interior valve plate right-hand member and outer valve plate right-hand member, have setting end play (this end play through measuring and calculating, take into full account thermal expansion distortion and stressed), between outer valve plate right-hand member and the second purge passage 22, also there is certain end play.Interior valve plate right-hand member and outer valve plate right-hand member end play are enough, in the time of whole valve plate temperature distortion, outer valve plate left end and the equal axial restraint of interior valve plate left end, interior valve plate right-hand member moves axially to the right along right side splined driveshaft keyway, outer valve plate right-hand member moves axially to the right, and in this process, between inside and outside valve plate right-hand member and between outer valve plate right-hand member and purge passage, all do not contact, thereby realize outer valve plate and internal valve slab integral along right side transmission shaft axial motion, the distortion that realizes overall thermal expansion cushions.
As Fig. 2 and 3, also filling heat insulation preservation material 17 between valve body mid-section body 5 and outer valve plate 28 and between valve body mid-section body 5 and inner housing 16, heat-insulating heat-preserving material 17 by the first purge passage 19, the first steel plate 20, the second steel plate 21, the second purge passage 22 landfills in wherein, and the purge hole of need the first purge passage 19 and the second purge passage 22 and purging path are reserved, be convenient to corresponding site to purge.Blow device by purge cold air in valve body and spindle unit carry out cooling.
As shown in Fig. 2,3,5-7,9, blow device is mainly made up of the first purge passage 19, the first steel plate 20, the second steel plate 21, the second purge passage 22 etc.The first purge passage 19 becomes a circular passage with the each free steel pipe dish of the second purge passage 22, this circular passage is all taking each side transmission shaft 48.1(or 48.2) center as rotation center, and stretch out one section from circular passage respectively, to be connected with outside air supply plant, as shown in Figure 9; As Fig. 4,5,7, the first purge passage 19 are welded in valve body mid-section body 5 by the first steel plate 20, as Fig. 4,5,8, the second purge passage 22 are welded in valve body mid-section body 5 by the second steel plate 21.The inlet mouth 26 of the inlet mouth 25 of outside air supply plant by the second purge passage, the first purge passage by pneumatic transmission in the first purge passage 19 and the second purge passage 22.
The first purge passage 19 is welded in by the first steel plate 20, on the circular passage of the first purge passage 19, facing toward high-temp. furnace material one side, along the spaced apart slotted hole 61 that is provided with multiple cone shapes of circumferential direction of circular passage, as shown in Fig. 5,7, these slotted holes are along the circumferential direction even all spaced apart, and on middle circumferential direction, several crossing medullary rays represent cone slotted hole Yuan center as shown in Figure 9.As shown in Figure 5, each cone slotted hole 61 Liang Geyuan centers respectively with the vertical medullary ray of the first purge passage 19 and horizontal center line Φ 1 at an angle and Φ 2, to guarantee being purged to fully interior valve plate 29 and outer valve plate 28 region of interest, and form gas curtain one at respective regions, stop coal gas of high temperature to enter in the interval of close position composition of the first door 35, the second bolt assembly 30 and axle, the unlikely high-temperature zone that forms herein is normally worked sealing member under security context.
As Fig. 6,9, the second purge passage 22 are welded in by the second steel plate 21, be provided with two circular cone body openings at it facing to high-temp. furnace material one side is spaced apart, these holes are along the circumferential direction even all to distribute; Two cone hole circle centers respectively with the vertical medullary ray of the second purge passage 22 and horizontal center line Φ 3 at an angle and Φ 4, to guarantee to be purged to fully the close position of the first door 35, the second bolt assembly 30 and axle, and at this interval gas curtain that forms, prevent that blast furnace coal gas of high temperature in valve body is through herein, sealing member is damaged.
As shown in Figure 8, the large flange of bearing support 46 outside casts out a boss, has two holes: prosopyle a and posticum b on this boss.As Fig. 4, have bearing support cooling trough 49 at bearing support 46 near blast furnace burden side, in this bearing support cooling trough 49, be also provided with a dividing plate, prosopyle a and posticum b are separated in dividing plate both sides, prosopyle a passes into water coolant from a side, cover after the stroke of whole tank, flow out from the posticum b of opposite side, thereby reach circulating cooling function.
As Fig. 1,2,10-12, liner plate assembling is made up of upper abrasion-proof backing block 13, lower abrasion-proof backing block 14 and inner housing 16 etc.As Figure 13, inner housing 16 is made up of upper and lower two-section, is above truncated into funnel housing, under be truncated into cylindrical shell; On the funnel housing of inner housing 16, offer respectively circumferential uniform bolt hole 54, oblong aperture 53 and four square holes 55 separately; Inner housing 16 funnel housing outer walls be designed with respectively two circles between the upper and lower every the boss 52 and 56 in full circle week, these two boss mainly play the effect of stiffening web, boss 56 is being affiliated to of convenient upper abrasion-proof backing block hangers 15 also.Bolt hole 54 is through boss 56.As Figure 14, upper abrasion-proof backing block 13 is the coniform ring body that can be placed in the upper funnel housing of inner housing 16, and the outer wall of each upper abrasion-proof backing block 13 is designed with two small boss 57 and a upper abrasion-proof backing block hangers 15.The degree that fits tightly when boss 57 ensures that each upper abrasion-proof backing block 13 is connected as a single entity by bolt assembly and bolt hole 54 and inner housing 16, is unlikely each upper abrasion-proof backing block 13 is swung with inner housing 16.Upper abrasion-proof backing block 13 is processed into 8, all leaves certain gap between every, in guarantee, after abrasion-proof backing block 13 expanded by heating, can have enough spaces not interfere.The inwall of each upper abrasion-proof backing block 13 is designed with hanger 58, need to hang away replacing time, can upper abrasion-proof backing block 13 be hung away by hanging bait 58.Upper abrasion-proof backing block hangers 15 wore the oblong aperture 53 on inner housing 16, and the lower bevel of upper abrasion-proof backing block hangers 15 rides against oblong aperture 53 peripheries of inner housing 16, plays certain support, and formed a connection state alive.In the time of upper abrasion-proof backing block 13 expanded by heating, in connection, the bolt assembly of abrasion-proof backing block 13 and inner housing 16 is fixed the top of upper abrasion-proof backing block 13, some compensating motions can be carried out by the lower bevel of upper abrasion-proof backing block hangers 15 in bottom, are unlikely to form larger thermal stresses.
As Figure 10, lower abrasion-proof backing block 14 is for being placed into the cylindrical shell shell in the bottom cylindrical shell of inner housing 16, circumferentially uniform four casting lug thereons 51 of lower abrasion-proof backing block 14 cylindrical shell shell upper limb outer walls, lower abrasion-proof backing block 14 inserts by casting lug thereon 51 and in four square holes 55 of inner housing 16, completes and being connected of inner housing 16.
In the time of the blanking of blast furnace heat material, upper abrasion-proof backing block 13 and lower abrasion-proof backing block 14 can protect inner housing 16 not to be worn, and in the time that needs replace with abrasion-proof backing block 13 or lower abrasion-proof backing block 14, can complete more and change jobs according to corresponding dismounting and installation process.
Arranged on left and right sides oil cylinder 3 actuating arm 9 of each self-driven arranged on left and right sides respectively, actuating arm 9 rotarily drives respectively transmission shaft 48.1(or 48.2) rotation, drive respectively interior valve plate 29 and outer valve plate 28 to relatively rotate by transmission shaft, form an opening, the size of opening can realize adjusting by the stroke of controlling oil cylinder 3, thereby reaches the adjusting of blast furnace burden.
Equally, blast furnace material flow regulator when the present embodiment is also applicable to blast furnace burden and is cold burden in the situation that not doing any change and adjustment.
Reduce if cost and the high temperature safeguard procedures such as relevant cooling, purging and radioprotective in this example are removed, the blast furnace material flow regulator when being equally also applicable to blast furnace burden and being cold burden.
Above disclosed is only preferred embodiment of the present invention; certainly can not limit with this interest field of the present invention; therefore the equivalence done according to the present patent application the scope of the claims changes, as variation and improvement that processing parameter or device are made still belong to protection scope of the present invention.
Claims (8)
1. a blast furnace material flow gate device that is applicable to high-temp. furnace material, mainly comprises inside and outside valve plate, inner housing and abrasion-proof backing block, transmission shaft and cylinder drive in valve body, valve body; It is characterized in that: valve body both sides external respectively arranges a drive unit, each side drive device connects separately a transmission shaft, and two transmission shaft straight lines relatively stretch into respectively in valve body, the termination of each side transmission shaft toward interior all connect successively outside valve plate and interior valve plate; Outer valve plate left end is connected with the medial extremity of left side drive shafts by spline, and outer valve plate right-hand member is bearing on the medial extremity of right side transmission shaft; Interior valve plate left end is bearing on the medial extremity of left side drive shafts, and interior valve plate right-hand member is connected with the medial extremity of right side transmission shaft by spline; Before and after inside and outside valve plate, fasten, opening down with the match valve pocket that forms of the lower end of inner housing and abrasion-proof backing block; Opening symmetry before and after valve plate and outer valve plate in opening process;
Outer valve plate left end and interior valve plate right-hand member are separately by the spline joint on spline housing and place side transmission shaft; Interior valve plate left end and outer valve plate right-hand member separately by sleeve supporting on the side transmission shaft of place; Each spline housing and each axle sleeve are separately fixed at side valve Ban center, place; Each side transmission shaft medial extremity is all fixedly connected with an axle end baffle plate; Between interior valve plate right-hand member and outer valve plate right-hand member, be provided with end play, between outer valve plate right-hand member and right side purge passage, be also provided with end play, outer valve plate right-hand member and interior valve plate right-hand member can axially move to right in the time of valve plate temperature distortion on the transmission shaft of right side, and outer valve plate left end and the equal axial restraint of interior valve plate left end.
2. the blast furnace material flow gate device that is applicable to high-temp. furnace material according to claim 1, it is characterized in that: the outboard end center of each side transmission shaft has a blind hole shape water-cooling channel, in this hole, be positioned at aperture place and pack swivel joint into, swivel joint links together by the first bolt assembly and the transmission shaft of axial setting; Swivel joint arranges Inlet and outlet water access port, and the water-cooling channel at Bing Yuzhou center forms refrigeration cycle passage.
3. the blast furnace material flow gate device that is applicable to high-temp. furnace material according to claim 2, it is characterized in that: on valve body mid-section body inwall, heat-insulating heat-preserving material is set, in heat-insulating heat-preserving material, burying blow device underground is also the reserved purge hole of blow device and purging path; Described blow device is multiple independent parallel settings the circular channel taking center transmission shaft as rotation center, and one end of circular channel is stretched out and passed valve body from annular and is connected with outside air supply plant; On circular channel, interval arranges gas hole, and gas hole arrives setting purging region by purging path respectively.
4. the blast furnace material flow gate device that is applicable to high-temp. furnace material according to claim 3, is characterized in that: blow device is mainly made up of the purge passage of two independent parallels; The each free steel pipe dish of first and second purge passage becomes a center taking transmission shaft as rotation center circular channel, and one end, circular channel is stretched out through valve body and is connected with outside air supply plant from annular; First and second purge passage is passed through respectively the first and second Plate Weldings in valve body mid-section body; The first and second steel plates are fixed on valve interior wall; In the first purge passage, face toward high-temp. furnace material one side, be provided with multiple cone shape slotted holes along the circumferential direction of circular passage is evenly spaced apart, each cone slotted hole Liang Geyuan center respectively with the first purge passage perpendicular vertically and horizontal center line be angle setting; The second purge passage facing to high-temp. furnace material one side, is offered two circular cone body openings along the circumferential direction of circular passage every one section of setpoint distance, the hole circle center of these two cones respectively with the second purge passage perpendicular vertically and horizontal center line be angle setting.
5. according to the blast furnace material flow gate device that is applicable to high-temp. furnace material one of claim 1-4 Suo Shu, it is characterized in that: each side transmission shaft is fixed on valve body by bearing support, each side transmission shaft from outer toward interior through bearing support and with the most contiguous step of bearing support on, a permanent seat is set, and permanent seat is connected with transmission shaft by screw assembly; Filling heat insulation preservation material between the inner side of permanent seat and transmission shaft.
6. the blast furnace material flow gate device that is applicable to high-temp. furnace material according to claim 5, is characterized in that: the large flange of bearing support outside casts out a boss, has two holes: prosopyle and posticum on this boss; Have bearing support cooling trough at bearing support near blast furnace burden side, this bearing support cooling trough middle part is provided with a dividing plate, and prosopyle and posticum are close to respectively dividing plate setting and are positioned at dividing plate both sides.
7. according to the blast furnace material flow gate device that is applicable to high-temp. furnace material described in claim 1-4 or 6, it is characterized in that: valve body mid-section body upper and lower ends all arranges blast furnace material flow gate device is fixedly connected on to the flange on blast furnace, upper flange and lower flange all arrange bailey wall, the bailey wall of each flange all forms an annular space along valve body mid-section body central rotation, in the middle of space, a water-stop sheet is all set, water-in and water outlet are close to respectively water-stop sheet setting and are positioned at water-stop sheet both sides.
8. the blast furnace material flow gate device that is applicable to high-temp. furnace material according to claim 7, is characterized in that: inner housing and abrasion-proof backing block are mainly made up of upper abrasion-proof backing block, lower abrasion-proof backing block and inner housing; Inner housing is made up of upper and lower two portions, and top is funnel housing, and bottom is cylindrical shell; On funnel housing, offer respectively circumferential uniform bolt hole, oblong aperture and four square holes separately; Funnel housing outer wall be designed with respectively two circles between the upper and lower every the boss in full circle week; Bolt hole is through upper circle boss; Upper abrasion-proof backing block is the coniform ring body that can be placed in the upper funnel housing of inner housing, the outer wall of each upper abrasion-proof backing block has two small boss and a upper abrasion-proof backing block hangers, the bolt hole of boss and inner housing fits tightly, and upper abrasion-proof backing block hangers is connected as a single entity inner housing and upper abrasion-proof backing block through the oblong aperture on inner housing the bolt assembly in fitted bolt hole; Upper abrasion-proof backing block is processed into multi-disc, all leaves the gap that holds abrasion-proof backing block expanded by heating between every; The inwall of each upper abrasion-proof backing block is provided with hanger; Lower abrasion-proof backing block is the cylindrical shell shell that can be placed in the bottom cylindrical shell of inner housing, and lower abrasion-proof backing block cylindrical shell shell upper limb outer wall is uniform four casting lug thereons circumferentially, and lower abrasion-proof backing block inserts by casting lug thereon in four square holes of inner housing and is connected with inner housing.
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| CN109022655B (en) * | 2018-09-18 | 2020-12-08 | 中冶东方工程技术有限公司 | Ultra-low bell-less top charging device |
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| EP1811044A1 (en) * | 2006-01-20 | 2007-07-25 | Paul Wurth S.A. | Three hopper charging installation for a shaft furnace |
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| US4821998A (en) * | 1986-11-21 | 1989-04-18 | Paul Wurth S.A. | Mechanism for operating a metering valve |
| CN201762346U (en) * | 2010-05-19 | 2011-03-16 | 中冶东方工程技术有限公司 | Blast furnace distributing device of mechanical hydraulic group drive chute |
| CN201883102U (en) * | 2010-07-23 | 2011-06-29 | 北京首钢机电有限公司 | Four-tin bell-less charging device |
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