CN105121987B - Rotary hearth furnace - Google Patents
Rotary hearth furnace Download PDFInfo
- Publication number
- CN105121987B CN105121987B CN201480020694.3A CN201480020694A CN105121987B CN 105121987 B CN105121987 B CN 105121987B CN 201480020694 A CN201480020694 A CN 201480020694A CN 105121987 B CN105121987 B CN 105121987B
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- China
- Prior art keywords
- siege
- rotary hearth
- hearth furnace
- metalwork
- ring bodies
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/16—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
Abstract
The present invention provides a kind of rotary hearth furnace, in addition the rotary hearth furnace possessing eccentric rotary suppression function is further related to, rotate peripheral speed even if improving, in the range of when when from the startup of stove to low-temperature operation, high-temperature operation, also the eccentric rotary of this siege can suitably be suppressed, and compact and simple in construction, it is also possible to restraint measure space, manufacturing cost.This rotary hearth furnace possesses: circular siege (4), and it is driven in rotation along horizontal plane on plant bottom case (2)；Ring bodies (11), its under siege with this circular siege be concentric circles arrange；Fork arm (12), it is provided with multiple on plant bottom case, is spaced apart and is arranged as round-shaped at equal intervals, and has with siege position skew in horizontal plane and correspondingly bear the pressurized roller (16) of the pressing effect from ring bodies；And spring unit (17), it is arranged on plant bottom case, and with the pressurized roller of fork arm bear pressing effect correspondingly push back ring bodies towards on fork arm is exerted a force.
Description
Technical field
The present invention relates to a kind of large-scale siege, in addition further relate to a kind of possess eccentric rotary suppression function turn the end
Stove, in the range of during even if improving rotation peripheral speed when from the startup of stove to low-temperature operation, high-temperature operation, it is also possible to suitably press down
Make the eccentric rotary of this siege, and compact and simple in construction, it is also possible to restraint measure space, manufacturing cost.
Background technology
As the correlation technique of rotary hearth furnace, know and have patent document 1～6.Patent document 1 " rotary hearth reduction furnace
In reduced iron discharger ", the impeller of the length of the whole width covering rotary hearth is utilized to pick up rotary hearth from face side
On reduced iron, and make to fall on its shaker belting in being arranged on impeller, from outlet to reduction furnace discharge.
In " the siege construction of rotary hearth furnace " of patent document 2, the circular rotation of configuration between internal perisporium and periphery wall
The inner peripheral of converter bed is made up of the framework being shaped by castable with outer peripheral edge, and respectively circumferential plurality of positions every
These frameworks are split in the compartment of terrain opening regulation, fill potsherd in these gaps.
In " the siege construction of rotary hearth furnace " of patent document 3, the circular rotation of configuration between internal perisporium and periphery wall
Converter bed, inward-outward direction pars intermedia is made up of the refractory casting bed of material, and in the inner circumferential side adjacent with the refractory casting bed of material
Configure multiple row refractory brick with at least one party in outer circumferential side towards inward-outward direction, formed between regulation between the row of these refractory brick
Gap.
" the having the centreless ring rotator automatically seeking core control function " of patent document 4 possesses at the ring laid along level
The ring rotator that supported by multiple supporting rollers on the guide rail of shape and turned round by driving and with above-mentioned ring-type guide rail same core
The benchmark ring-shaped guide rail arranging, and be provided with on the suitable number of supporting roller of above-mentioned supporting roller around horizontal direction rotation
The rotary shaft of this roller and the rotating mechanism that can arbitrarily change the rotation direction of this roller, and at above-mentioned ring rotator
This ring rotator that even partition circumferential location more than at least three is provided with for detecting in revolution is ring-type with said reference
The testing agency of the change of the distance between guide rail, is offsetting being increased or decreased of the described distance being detected by this testing agency
Trend direction on, make above-mentioned rotating mechanism work and revise the rotation direction of above-mentioned supporting roller so that above-mentioned ring-type rotation
The rotary track turned is similar to said reference ring-shaped guide rail with on the imaginary circumference of core.
In " the siege driving means in siege rotary type heating furnace " of patent document 5, possess in the horizontal direction by
Drive in the siege rotary type heating furnace of the rotary hearth rotating, described siege is provided with siege locking mechanism and siege drives
Motivation structure, the multiple index pin parallel with the rotation of described siege is filled in the way of circumference etc. is joined by this siege locking mechanism
Join fixing, retreat in radiation direction relative to rotary hearth and passed in and out by it and engage to stop the rotation of siege with index pin
Turn, this siege drive mechanism have the drive member retreated in the direction of rotation of siege and make the holding section of this component with
The control member that index pin engaging separates, when drive member engages with index pin, makes the disposition interval of this component and index pin
Interval accordingly along siege direction of rotation drive, when drive member departs from from index pin, make this component to siege rotation side
To contrary towards retrogressing.
In " the siege construction of rotary hearth furnace " of patent document 6, its problem is, provides a kind of rotary hearth furnace, and it can be with behaviour
Heating when making, cooling equitemperature change make the free thermal deformation of siege accordingly, and mitigate bearing to the applying of siege joint portion
Carry and steady running, load on ring-type rotating frame ring-type siege and this siege upper surface lay base plate turn
In the siege construction of end stove, above-mentioned siege and above-mentioned base plate are by the multiple siege parts being formed as arc-shaped and base plate part
Constitute, and be respectively equipped with the gap of regulation between adjacent siege parts between base plate part, utilize fixed component by siege portion
Part is connected at rotating frame one, and possesses the direction limiting part of hot bearing of trend for limiting siege parts.
Citation
Patent document 1: Japanese Unexamined Patent Publication 2002-20814 publication
Patent document 2: Japanese Unexamined Patent Publication 2002-310564 publication
Patent document 3: Japanese Unexamined Patent Publication 2002-310565 publication
Patent document 4: Japanese Patent Publication 3-1217 publication
Patent document 5: the real public clear 62-34234 publication of Japan
Patent document 6: Japanese Unexamined Patent Publication 2010-203737 publication
Invention problem to be solved
Rotary hearth furnace has the body of heater of circular ring type in central authorities with hole, around the furnace interior period of one week, to processing material
Material carries out hot-working.Siege is circular ring type in the same manner as body of heater, under the refractory material that mounting processes material, is provided with siege
Metalwork and rotating frame.Siege is provided with the guide rail that railway etc. is used, along the rotation side of siege on equipment bottom surface
To being arranged with the wheel bearing guide rail.Utilize wheel overall to support siege, and rotated by driving this wheel, via guide rail
And drive siege to rotate.
With regard to rotary hearth furnace, in order to increase output and in the trend maximizing, existing a diameter of about 20m, but closely
Nian Lai, needs to extend to 50～60m, and siege, the width of body of heater also become gradually to maximize.
The siege of rotary hearth furnace is extremely large-scale, therefore, it is difficult to arrange mechanical pivot on itself, rotate
Not there is on siege mechanical pivot.Therefore, siege is possible to around the pivot different from the center of himself inclined
The heart rotates, and makes siege contact with furnace wall etc..As contact Prevent countermeasures, use the horizontal direction such as side guide, flat roller position
Put limiting mechanism, limit eccentric rotary, keep the horizontal direction position relative to furnace wall etc. for the siege.
But, in rotary hearth furnace, it has to consider the thermal expansion of each several part.Horizontal direction position restriction mechanism needs and turns
During the high-temperature operation of end stove, the state of the thermal expansion such as siege sets with being consistent.Therefore, startup, low temperature at rotary hearth furnace are grasped
When making, less correspondingly the rocking of generation gap etc. at position restriction mechanism in the horizontal direction with the hot elongation of siege etc., by
This makes siege eccentric rotary.
When rotating in the state of siege is in bias, the wheel making siege rotate makes siege become from the de-wheel of guide rail can not
Rotate, or siege contacts with furnace wall etc. and makes the refractory material breakage of composition these siege, furnace walls etc., as a result, induction
The rotation of siege is defective, in-furnace temperature is defective, becomes the underproof reason of product.
Especially, in the rotary hearth furnace that external diameter maximizes, when wanting to produce within the process time as in the past
When, need improve siege rotation peripheral speed, due to by maximize also increase siege weight, in order to bear such greatly
The rotation peripheral speed of the high speed of the siege of weight, the horizontal direction position restriction mechanism pattern of wants is strength and high accuracy.
Although exist to horizontal direction position restriction mechanism be assembled with spring and utilize this spring eliminate rock and strength
The example of ground holding furnace bed position, but exist and need firmly to assemble firm spring and make installation space, manufacturing cost become
Bigger such problem.
Content of the invention
The present invention completes in view of above-mentioned existing problem, its object is to provide a kind of large-scale siege, removes this
Outside further relate to the rotary hearth furnace that possesses eccentric rotary suppression function, rotate peripheral speed even if improving, the behaviour from the startup of stove to low temperature
When making, high-temperature operation when in the range of, it is also possible to suitably suppress the eccentric rotary of this siege, and compact and simple in construction, also
Can restraint measure space, manufacturing cost.
For solving the means of problem
The rotary hearth furnace of the present invention is characterised by, described rotary hearth furnace possesses: circular siege, its edge on plant bottom case
Horizontal plane and be driven in rotation；Ring bodies, its under this siege with this circular siege be concentric circles arrange；Fork
Arm, it is provided with multiple on the said equipment base, is spaced apart appropriate intervals and is arranged as toroidal, and has and exist with this siege
In horizontal plane position skew correspondingly bear the pressing effect from above-mentioned ring bodies by pressure side；And spring, it is located at
State on plant bottom case, and born pressing effect correspondingly in the court pushing back above-mentioned ring bodies with the above-mentioned of above-mentioned fork arm by pressure side
Upwards this fork arm is exerted a force.
The rotary hearth furnace of the present invention is characterised by, described siege is rotated mechanism and drives rotation, and this rotating mechanism includes
On described plant bottom case arrange spinning rollers and on this siege arrange and on this spinning rollers advance plane lead
Rail, the width dimensions of above-mentioned flat guide is more than the width dimensions of above-mentioned spinning rollers.
The rotary hearth furnace of the present invention is characterised by, described siege includes furnace bottom component, the stove arranging under this furnace bottom component
Bed metalwork and the rotating frame arranging under this siege metalwork, above-mentioned siege metalwork is with above-mentioned rotating frame each other
Arrange sliding freely towards the radial direction of above-mentioned siege.
The rotary hearth furnace of the present invention is characterised by, is provided with for limiting between described siege metalwork and described rotating frame
Make the stop relative to the slip amount of movement of this rotating frame for this siege metalwork.
The rotary hearth furnace of the present invention is characterised by, this siege obtains flat by the spring exerting a force multiple described fork arms
Weighing apparatus, in order in order to suppress to extend eccentric rotary that is uneven and that produce because described siege is warm in all directions.
The rotary hearth furnace of the present invention is characterised by, this rotary hearth furnace changes accordingly with the height of the temperature under described siege
The intensity of described spring and/or material.
The rotary hearth furnace of the present invention is characterised by, described spring is disk spring.
Invention effect
In the rotary hearth furnace of the present invention, circular siege employing does not keeps pivot but keeps it in multiple positions
The form of periphery, relating to a kind of large-scale siege, in addition, rotating peripheral speed even if improving, the behaviour from the startup of stove to low temperature
When making, high-temperature operation when in the range of, also can utilize in this siege that the holding effect of multiple position brought is suitable
Balance suppresses for example because of eccentric rotary that is uneven and that produce, and the compact and simple in construction of extending hot in all directions, also
Can restraint measure space, manufacturing cost.
Brief description
Fig. 1 is the overall summary stereogram of preferably one embodiment of the rotary hearth furnace representing the present invention.
Fig. 2 is the amplification view of siege and the periphery thereof representing the rotary hearth furnace shown in Fig. 1.
Fig. 3 is that the X-X alignment in Fig. 2 regards sectional view.
Fig. 4 is that the Y-Y alignment in Fig. 2 regards sectional view.
Fig. 5 is to represent that the configuration between ring bodies, fork arm and the spring unit that the rotary hearth furnace shown in Fig. 1 is possessed is closed
The top view of system.
Fig. 6 is the major part enlarged drawing of the bottom of the siege shown in Fig. 2.
Fig. 7 is the main portion sectional view of the spring unit representing that the rotary hearth furnace of Fig. 1 used.
Fig. 8 is that the major part of variation and Fig. 6 corresponding siege bottom of the rotary hearth furnace representing the present invention is amplified
Figure.
Detailed description of the invention
Hereinafter, referring to the drawings the preferred embodiment of the rotary hearth furnace of the present invention is described in detail.Fig. 1 is this embodiment party
The overall summary stereogram of the rotary hearth furnace of formula, Fig. 2 is the enlarged section of siege and the periphery thereof representing the rotary hearth furnace shown in Fig. 1
Figure, Fig. 3 be X-X ray in Fig. 2 to regarding sectional view, Fig. 4 is that the Y-Y alignment in Fig. 2 regards sectional view, and Fig. 5 is to represent shown in Fig. 1
The rotary hearth furnace ring bodies, fork arm and the spring unit that are possessed between the top view of configuration relation, Fig. 6 is shown in Fig. 2
The major part enlarged drawing of bottom of siege, Fig. 7 is that the major part of the spring unit representing that the rotary hearth furnace of Fig. 1 used is cutd open
View.
As it is shown in figure 1, rotary hearth furnace 1 is arranged on the plant bottom cases such as ground 2.As shown in Figure 1 and Figure 2, the stove of rotary hearth furnace 1
Body 3 is formed as having the donut-like in hole portion, i.e. circular in central authorities.Body of heater 3 is by inner circumferential sidewall 3a, outer peripheral sidewall 3b and stove
Top 3c is constituted, and constructs as being fixed on plant bottom case 2.
Constitute stove to block the bottom of body of heater 3, be provided with circular siege 4 in the bottom of body of heater 3.Siege 4 is relative
Body of heater 3 after fixing and rotatably arrange along its bottom surface i.e. horizontal plane.Swollen in view of the heat during operation of rotary hearth furnace 1
Swollen (in the accompanying drawings, the heat extension towards arrow H direction), siege 4 is capable of absorbing thermal expansion by the circumferentially spaced at siege 4
Multiple arcuation parts are linked up and are formed as circular by gap.
In order to allow siege 4 to interdict with furnace interior relative to the rotation of body of heater 3 and by outside for stove, in the inner circumferential of body of heater 3
It between sidewall 3a and outer peripheral sidewall 3b and siege 4, is provided with circular water seal arrangement 5.
As shown in Figure 2 to 4, siege 4 is configured to include: fire resistance furnace bottom component 6, it is formed by refractory material, and face
In stove；Siege metalwork 7, it is set to engage under furnace bottom component 6；And metal rotating frame 8, it is at siege metal
Arrange freely towards radially sliding of siege 4 relative to this siege metalwork 7 under part 7.
Siege metalwork 7 is by combining at the channel 7a of the inner circumferential side of siege 4 and outer circumferential side configuration and at these
Circumferentially spaced appropriate intervals along siege 4 and the shaped steel (for example, H profile steel) radially configuring at siege 4 between channel 7a
7b and be configured to framework construction.
Rotating frame 8 is by combining shaped steel (for example, H type in the inner circumferential side of siege 4, outer circumferential side and intermediate configurations thereof
Steel) 8a and the circumferentially spaced appropriate intervals along siege 4 and the shaped steel radially configuring at siege 4 between these shaped steel 8a
(for example, H profile steel) 8b and be configured to identical with siege metalwork 7 framework construction.Understand with reference to Fig. 2, rotating frame 8
Be formed as the width dimensions narrower than siege metalwork 7, in order to will not expose from siege metalwork 7 outside to left and right direction.
It is provided with the flat flat guide 9 of a pair metal system in rotating frame 8, make this flat guide 9 be positioned at inner circumferential side
And immediately below the shaped steel 8a of outer circumferential side.On the other hand, plant bottom case 2 is provided with the spinning rollers of inner circumferential side and outer circumferential side
10, make this spinning rollers 10 be positioned at the respective underface of pair of planar guide rail 9.These inner circumferential sides and the spinning rollers of outer circumferential side
10 configure along the appropriate intervals that is circumferentially spaced one from the other of body of heater 4.
As stated in the Background Art, based on siege 4 can around the center different from the center of himself in horizontal plane eccentric
The reason that rotation, these spinning rollers 10 are not on the basis of the center of siege 4, but to be fixedly installed and its center is motionless
It on the basis of the center C of the center C of body of heater 3, i.e. rotary hearth furnace 1, is set to the arrangement of circle around this center C.
Mounting flat guide 9 on these spinning rollers 10 are respective, thus on spinning rollers 10, siege 4 is supported to
Rotatable.Spinning rollers 10 is all or any one is rotated by drive motor, utilizes the rotation of this spinning rollers 10 to drive
Make flat guide 9 advance on this spinning rollers 10, advanced by making flat guide 9, drive siege 4 to rotate relative to body of heater 3.
The width dimensions of flat guide 9 is set to bigger than the width dimensions width of spinning rollers 10 so that even if siege 4
Position skew in horizontal plane carries out eccentric rotary, and each spinning rollers 10 also bears each flat guide all the time in its whole width
9。
Rotating frame 8 at siege 4 has metal ring bodies 11, and this ring bodies 11 is from rotating frame 8 to inner circumferential
Hang down between the spinning rollers 10 of side and outer circumferential side, and along the circumference of circular siege 4.Just going up of ring bodies 11
Side, make to strengthen the installation site of this ring bodies 11 shaped steel 8a be positioned at rotating frame 8 radial direction centre position (inner circumferential side with
The centre of outer circumferential side).Ring bodies 11 is arranged in concentric circles with this siege 4 on the basis of the center of siege 4.Ring bodies 11
By being capable of the gap of absorbing thermal expansion along the circumferentially spaced of siege 4, multiple arcuation parts are linked up identically with siege 4
And be formed as ring-type.
As shown in Fig. 2, Fig. 5 and Fig. 6, being provided with multiple fork arm 12 on plant bottom case 2, this fork arm 12 rolls with rotating
Son 10 is similarly spaced apart appropriate intervals around the center C of rotary hearth furnace 1 and is arranged as toroidal.In the present embodiment, fork arm
12 around the arrangement of the periphery of ring bodies 11.Fork arm 12 is preferably arranged at equal intervals.
Fork arm 12 is by the pillar for the 13rd, erecting from base station 13 towards rotating frame 8 to the base station that plant bottom case 2 is arranged
14th, the pivot point P of substantially its middle body is rotatably supported by pillar 14 arm body 15 and towards ring bodies 11
One end of arm body 15 be installed as rolling the pressure roller freely and from horizontal direction contacting all the time with the side slip of ring bodies 11
Son 16 is constituted.Pressurized roller 16 rolls by with the ring bodies 11 that siege 4 rotates in the lump.
When ring bodies 11 moves horizontally towards the direction pressing pressurized roller 16, arm body 15 is put around pivot point P
Dynamic.That is, the one end of the arm body 15 being provided with pressurized roller 16 become from ring bodies 11 accept pressing effect by pressure side.
Plant bottom case 2 is provided with on the base station 13 of fork arm 12 spring unit 17 arranging.Specifically, at base station
The accessory the 18th, transmission lever 19 and the spring base that assemble L-shaped shape on 13 double as adjusting threaded body 20, the accessory 18 of this L-shaped shape
By the substrate plate 18a becoming the installation portion installed to this base station 13 and the spring base 18b structure erecting from one end of substrate plate 18a
Becoming, this transmission lever 19 runs through spring base 18b sliding freely and makes one end and the other end of arm body 15 rotatably link, should
Spring base doubles as adjusting threaded body 20 and is threadedly engaged as freely adjusting relative to this transmission lever 19 with the other end of transmission lever 19
The amount of screwing, is adjusting between threaded body 20 and spring base 18b, along the length direction of transmission lever 19, is being provided with as compression spring
And the spring unit 17 of function.
As it is shown in fig. 7, spring unit 17 is configured to prepare many groups by multiple disk spring 17a in same orientation in overlapping
Disk spring group 17b, and replace above-mentioned many group disk spring groups 17b along being oppositely directed to overlap, thus become compact and
Firm, firm construction.The spring being used as spring unit 17, is not limited to disk spring 17a, it would however also be possible to employ other kinds
The spring of class is self-evident.In the example shown in Fig. 7, clamp adjusting and will adjust between threaded body 20 and spring unit 17
The amount of screwing of whole threaded body 20 is transferred to the sleeve 21 of spring unit 17.
In fork arm 12, apply to pressurized roller 16 to make the elastic force of spring unit 17 double, in other words, be
Reduce the pressing force applying to pressurized roller 16 and transmit to spring unit 17, as shown in Figure 6, will from pivot point P to biography
Distance L2 passing bar 19 (other end of arm body 15) is set to be longer than from pivot point P to pressurized roller 16 (one end of arm body 15)
Distance L1 (L1 ＜ L2).
Pressurized roller 16 bears from ring bodies 11 and the reason that pressing acts on is the moving horizontally of ring bodies 11, i.e. siege 4
In horizontal plane, position offsets and eccentric rotary, offsets correspondingly with producing position, and spring unit 17 is pushing back ring bodies the 11st, stove
Bed 4 towards on fork arm 12 is flexibly exerted a force.
Not only when the high-temperature operation of rotary hearth furnace 1, during low-temperature operation upon actuation, it is also possible to utilize spring unit 17 right
Arm body 15 exerts a force and applies to preload, and presses pressurized roller 16 all the time to ring bodies 11 so that will not because of pressurized roller 16 with
There is gap between ring bodies 11 and produce and rock.
In addition, when the construction of siege 4 is illustrated, as shown in figs. 2 to 4, siege metalwork 7 not with rotating frame 8
In conjunction with and be placed on rotating frame 8, arrange freely towards radially sliding of siege 4 relative to rotating frame 8.Thus,
Siege metalwork 7 and rotating frame 8 are all free to thermal expansion and carry out heat extension.
At the upper surface of rotating frame 8, specifically, the shaped steel in the inner circumferential side and outer circumferential side constituting rotating frame 8
It on 8a, is provided with the engaging part 22 of the lower flange 7c of the shaped steel 7b being fastened on siege metalwork 7 sliding freely, in order to guide stove
The slip mutual with rotating frame 8 of bed metalwork 7 is moved.
Additionally, when siege metalwork 7 thermal expansion is slided mobile on rotating frame 8, in order to limit siege metalwork 7
Excessive slip moves, and between siege metalwork 7 and rotating frame 8, is provided with for limiting siege metalwork 7 relative to rotating frame
The stop 23 of the slip amount of movement of frame 8.
In illustrated example, stop 23 is arranged on the inner circumferential of siege metalwork 7 in the way of in the face of the inner circumferential of rotating frame 8
Side edge.Stop 23, when siege metalwork 7 slides mobile because of thermal expansion towards the radial outside of siege 4, supports with rotating frame 8
Connect, limit further sliding of siege metalwork 7 mobile.
It follows that the effect to the rotary hearth furnace 1 of present embodiment illustrates.Rotary hearth furnace 1 is to the place being encased in body of heater 3
Reason material carries out hot-working within the period that siege 4 rotates a circle.When driving spinning rollers 10 to rotate, flat guide 9 is in rotation
Advancing on rotating roller 10, thus siege 4 is driven in rotation along the horizontal plane along its bottom surface.When siege 4 is driven in rotation, send
The process material entering on siege 4 rotates a circle in body of heater 3, carries out hot-working to process material in the meantime.
In rotary hearth furnace 1, in period when when from starting to low-temperature operation, high-temperature operation, the siege of rotation the 4th, week
The component on limit is with temperature change thermal expansion or thermal contraction.Accordingly, with respect to body of heater 3, the size of siege 4 is continually changing.
Further, since in siege 4, do not possess mechanical pivot, therefore, it is possible to carry out around the pivot different from its center
Eccentric rotary.
Unrelated with the mode of operation of rotary hearth furnace 1, want position in horizontal plane to offset when siege 4 and start eccentric rotary
When, corresponding, the pressurized of one end setting to the arm body 15 at the fork arm 12 being configured at position offset direction for the ring bodies 11
Roller 16 presses.
Bear the arm that the pressurized roller 16 of pressing effect wants to make fork arm 12 centered on pivot point P from ring bodies 11
Body 15 swings, but owing to acting on to bear pressing effect corresponding via transmission lever 19 from spring unit 17 at the other end of arm body 15
Ground push back ring bodies 11 towards on power that arm body 15 is applied, thus, by the elastic force based on spring unit 17
Effect, can suppress the position of ring bodies the 11st, siege 4 to offset.
In the present embodiment, under siege 4, possess ring bodies the 11st, fork arm 12 and spring unit 17, this ring bodies
11 are arranged in concentric circles with this circular siege 4, and this fork arm 12 is provided with multiple on plant bottom case 2, between waiting each other
Be arranged as round-shaped every ground, and have with siege 4 in horizontal plane position skew correspondingly bear from ring bodies 11 by
The pressurized roller 16 (by pressure side) of pressure effect, this spring unit 17 is arranged on plant bottom case 2, and the pressure roller with fork arm 12
Son 16 bear pressing effect correspondingly push back ring bodies 11 towards on fork arm 12 is exerted a force, can be sent out by said structure
Wave eccentric rotary suppression function, rock or such as with producing because not taking into full account thermal expansion amount as patent document 1～3
Though patent document 4 use spring like that and prevent the generation rocked but installation space, manufacturing cost to become bigger structure different,
Ring bodies the 11st, fork arm 12 and spring unit 17 all can be assembled under siege 4, space can be saved, as spring, make
It with at a low price and firm spring unit 17 that is small-sized and that produce bigger elastic force, is capable of saving becoming of space and manufacturing cost
This reduction, additionally, use fork arm 12, can carry out doubling to the elastic active force of spring unit 17 and make it act on ring
Shape body 11, thus, it is also possible to reduce the required performance of spring unit 17, for this respect, it is also possible to guarantee miniaturization.
So, owing to being the structure using fork arm 12 and the small-sized and strength of spring unit 17, so even be weight
Even if bigger large-scale siege 4 and improve its rotate peripheral speed, when from the startup of rotary hearth furnace 1 to low-temperature operation, high-temperature operation
When in the range of, it is also possible to suitably suppress the eccentric rotary of this siege 4.Thereby, it is possible to prevent siege 4 and body of heater 3 left in level
Contact in right direction.
In addition, siege 4 is different from the temperature environment below rotating frame 8 in low temperature portion in high-temperature portion, it is possible to according to bullet
The material of spring unit 17 and soften in high-temperature portion, therefore also can enhancing elastic force, or the change compared with low temperature portion in high-temperature portion
For the high material of heat resistance.I.e., preferably change accordingly with the height of the temperature under siege 4 spring intensity and/or
Material.
When siege 4 enters line position skew in horizontal plane, the plane advanced above relative to spinning rollers 10 is led
Rail 9 also occurs position to offset.In the present embodiment, owing to being set as the width dimensions of flat guide 9 than spinning rollers 10
Width dimensions width width, even if therefore siege 4 occurs position to offset, it is also possible to prevent spinning rollers 10 from taking off from flat guide 9
Wheel.
And, according to above-mentioned setting, and the width of spinning rollers is set to wider situation phase as patent document 1 grade
Relatively, generation office on spinning rollers 10 can be prevented all the time in the weight of whole width lower support siege 4 of spinning rollers 10
The point-load in portion, can make the stress equalizing producing on spinning rollers 10, thereby, it is possible to extend the longevity of spinning rollers 10
Life, and cut down the required expense of maintenance, time.
Additionally, with regard to the construction of siege 4, owing to not using connected structure as patent document 5 or such as patent document
6 structures possessing complexity like that, but make siege metalwork 7 set freely towards radially sliding of siege 4 each other with rotating frame 8
Put, therefore, it is possible to make above-mentioned siege metalwork 7 and all free thermal expansion of rotating frame 8 and carry out heat extension.Thus, by stove
Bed metalwork 7 is possible to make because of thermal expansion the inner circumferential side of siege metalwork 7 to float in the case of combining with rotating frame 8
Rise, concomitantly lift furnace bottom component 6 therewith and interfere under above-below direction with inner circumferential sidewall 3a, but in present embodiment
In, it is prevented from such situation.
In addition, when siege metalwork 7 thermal expansion is slided mobile on rotating frame 8, in order to limit siege metalwork 7
Exceedingly slide mobile, be provided with between siege metalwork 7 and rotating frame 8 for limiting siege metalwork 7 relative to rotation
The stop 23 of the slip amount of movement of framework 8, therefore, it is possible to prevent the furnace bottom component 6 on siege metalwork 7 and outer peripheral sidewall 3b
Interfere in the lateral direction.
Extend, i.e. with the temperature in the circumference of siege 4 in addition, even allow for siege 4 uneven underground heat in all directions
The difference of environment has been thus makes the hot elongation of the radial direction towards siege 4 of circumference each several part different thus carry out eccentric rotary
Situation, makes siege 4 keep balance by utilizing the spring unit 17 to multiple fork arms 12 force, in other words by spring unit
17 deviations pinning ring bodies 11 are moved, and it is possible to suitably suppress this eccentric rotary.
And, in the present embodiment, according to above overall structure and effect, even if rotary hearth furnace 1 maximizes and
Rotate peripheral speed even if increasing, it is also possible to suitably prevent spinning rollers 10 from becoming can not rotate or stove from the de-wheel of flat guide 9
Bed 4 contact with body of heater 3 and make refractory material breakage thus produce rotation defective, in-furnace temperature is defective so generation product
Defective.
Figure 8 illustrates the variation of above-mentioned embodiment.In the above-described embodiment, by fork arm 12 around ring bodies
11 periphery arrangement but it also may by fork arm 12 around ring bodies 11 inner circumferential arrange, further also can around inner circumferential and around
Both peripheries arrange, and are all able to ensure that the effect identical with above-mentioned embodiment in either case.
Description of reference numerals:
1 rotary hearth furnace
2 plant bottom cases
3 bodies of heater
3a inner circumferential sidewall
3b outer peripheral sidewall
3c furnace roof portion
4 sieges
5 water seal arrangements
6 fire resistance furnace bottom components
7 siege metalworks
7a channel
7b shaped steel
7c lower flange
8 rotating frames
8a shaped steel
8b shaped steel
9 flat guides
10 spinning rollers
11 ring bodies
12 fork arms
13 base stations
14 pillars
15 arm bodies
16 pressurized rollers
17 spring units
17a disk spring
17b disk spring group
18 accessories
18a substrate plate
18b spring base
19 transmission levers
20 spring bases double as adjusting threaded body
21 sleeves
22 engaging parts
23 stops
The center of C rotary hearth furnace
H thermal expansion direction
L1 is from pivot point to distance L1 of pressurized roller
Distance L2 from pivot point to transmission lever for the L2
P pivot point
Claims (7)
1. a rotary hearth furnace, it is characterised in that
Described rotary hearth furnace possesses:
Circular siege, it is driven in rotation along horizontal plane on plant bottom case；
Ring bodies, its under this siege with this circular siege be concentric circles arrange；
Fork arm, it is provided with multiple on described plant bottom case, is spaced apart appropriate intervals and is arranged as round-shaped, and has
With this siege in horizontal plane position skew correspondingly bear the pressing effect from described ring bodies by pressure side；And
Spring, it is located on described plant bottom case, and correspondingly exists with being born pressing effect by pressure side described in described fork arm
Push back described ring bodies towards on to this fork arm exert a force.
2. rotary hearth furnace according to claim 1, it is characterised in that
Described siege is rotated mechanism and drives rotation, and described rotating mechanism includes the rotation rolling arranging on described plant bottom case
Son and the flat guide arranging on this siege and advancing on this spinning rollers,
The width dimensions of described flat guide is more than the width dimensions of described spinning rollers.
3. rotary hearth furnace according to claim 1 and 2, it is characterised in that
Described siege include furnace bottom component, under this furnace bottom component arrange siege metalwork and under this siege metalwork
The rotating frame arranging,
The radial direction of described towards each other siege is arranged described siege metalwork sliding freely with described rotating frame.
4. rotary hearth furnace according to claim 3, it is characterised in that
It is provided with between described siege metalwork and described rotating frame for limiting this siege metalwork relative to this rotating frame
The stop of the slip amount of movement of frame.
5. rotary hearth furnace according to claim 1 and 2, it is characterised in that
This siege obtains balance by the spring exerting a force multiple described fork arms, in order in order to suppress because described siege is respectively
On direction, heat extends eccentric rotary that is uneven and that produce.
6. rotary hearth furnace according to claim 1 and 2, it is characterised in that
Described rotary hearth furnace changes intensity and/or the material of described spring accordingly with the height of the temperature under described siege
Matter.
7. rotary hearth furnace according to claim 1 and 2, it is characterised in that
Described spring is disk spring.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-084090 | 2013-04-12 | ||
| JP2013084090 | 2013-04-12 | ||
| PCT/JP2014/055371 WO2014167916A1 (en) | 2013-04-12 | 2014-03-04 | Rotary hearth furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105121987A CN105121987A (en) | 2015-12-02 |
| CN105121987B true CN105121987B (en) | 2016-10-05 |
Family
ID=51689330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480020694.3A Active CN105121987B (en) | 2013-04-12 | 2014-03-04 | Rotary hearth furnace |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5841296B2 (en) |
| CN (1) | CN105121987B (en) |
| IN (1) | IN2015CN05391A (en) |
| WO (1) | WO2014167916A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105349739A (en) * | 2015-12-08 | 2016-02-24 | 广西长城矿山机械设备制造有限公司 | Cast piece tempering furnace convenient to put and take material |
| JP7194205B2 (en) * | 2021-02-08 | 2022-12-21 | 中外炉工業株式会社 | Hearth structure of rotary hearth furnace |
| JP7275174B2 (en) * | 2021-02-08 | 2023-05-17 | 中外炉工業株式会社 | Hearth structure of rotary hearth furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60108993U (en) * | 1983-12-27 | 1985-07-24 | 三菱重工業株式会社 | annular swivel device |
| CN101253378A (en) * | 2005-10-11 | 2008-08-27 | 株式会社神户制钢所 | Rotary hearth furnace |
| JP2010203737A (en) * | 2009-03-05 | 2010-09-16 | Kobe Steel Ltd | Hearth structure of rotary hearth furnace |
| CN101968311A (en) * | 2009-07-28 | 2011-02-09 | 吴道洪 | Radiant tube isolated smoke gas heating rotary hearth furnace |
| CN102925174A (en) * | 2012-11-06 | 2013-02-13 | 湖南华银能源技术有限公司 | Large low-rank coal purifying quality-improving processing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5976551U (en) * | 1982-11-12 | 1984-05-24 | 川崎製鉄株式会社 | Sealing device for mobile hearth type heat treatment furnace |
| JPS6067315A (en) * | 1983-09-21 | 1985-04-17 | Mitsubishi Heavy Ind Ltd | Centerless circular rotor having automatic centripetal control function |
-
2014
- 2014-03-04 WO PCT/JP2014/055371 patent/WO2014167916A1/en active Application Filing
- 2014-03-04 JP JP2015511154A patent/JP5841296B2/en active Active
- 2014-03-04 CN CN201480020694.3A patent/CN105121987B/en active Active
-
2015
- 2015-09-04 IN IN5391CHN2015 patent/IN2015CN05391A/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60108993U (en) * | 1983-12-27 | 1985-07-24 | 三菱重工業株式会社 | annular swivel device |
| CN101253378A (en) * | 2005-10-11 | 2008-08-27 | 株式会社神户制钢所 | Rotary hearth furnace |
| JP2010203737A (en) * | 2009-03-05 | 2010-09-16 | Kobe Steel Ltd | Hearth structure of rotary hearth furnace |
| CN101968311A (en) * | 2009-07-28 | 2011-02-09 | 吴道洪 | Radiant tube isolated smoke gas heating rotary hearth furnace |
| CN102925174A (en) * | 2012-11-06 | 2013-02-13 | 湖南华银能源技术有限公司 | Large low-rank coal purifying quality-improving processing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5841296B2 (en) | 2016-01-13 |
| CN105121987A (en) | 2015-12-02 |
| JPWO2014167916A1 (en) | 2017-02-16 |
| WO2014167916A1 (en) | 2014-10-16 |
| IN2015CN05391A (en) | 2015-09-25 |
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