CN100491542C - Rotary blast furnace material-free bell furnace top distributing gear - Google Patents
Rotary blast furnace material-free bell furnace top distributing gear Download PDFInfo
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- CN100491542C CN100491542C CNB2007100642874A CN200710064287A CN100491542C CN 100491542 C CN100491542 C CN 100491542C CN B2007100642874 A CNB2007100642874 A CN B2007100642874A CN 200710064287 A CN200710064287 A CN 200710064287A CN 100491542 C CN100491542 C CN 100491542C
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- blast furnace
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Abstract
The invention discloses a rotating high furnace bellless furnace top distributing device, which is characterized by the following: including furnace throat, host rotating electrical machinery, host rotating gyroscopic ring, chute, a pulling frame of vertical motion, hoisting drive device and hinging pole of 'Y' type structure; setting the hinging pole between bottom center of frame and chute; setting bind with ball hinge and bidirectional hinge; setting the bind of hinging pole and chute bilateral as flat surface hinge; placing central line of hoisting frame on central line of furnace throat. The preparing difficult of this product is low and dependability is high.
Description
Technical field
The present invention relates to a kind of rotary blast furnace bellless furnace top distributor, belong to technical field of metallurgical equipment.
Background technology
The process of the blast-furnace smelting pig iron is a successive, pressure arranged in the stove and produces a large amount of coal gas, and whole process and atmospheric isolation, need how continuously furnace charge to be added in the stove under isolated situation is to guarantee the normal vital link of smelting of blast furnace.Furnace charge reasonably is distributed on the charge level on request, just can form the shape of charge level and the radially burnt thickness in ore deposit (ore coke ratio) distribution of furnace throat that need; Keep the rational coal gas distributions of blast furnace, make that conditions of blast furnace is stable, direct motion, have air permeability and good; Make blast furnace obtain high gas utilization rate, to reduce fuel ratio; Control furnace wall thermal load alleviates edge coal gas stream and washes away, and prolongs the anti-material life-span.Therefore, the cloth Performance And Reliability to top filling equipment has proposed very high requirement; Early stage apparatus for distributing is all for there being the bell furnace roof, as two clock-types, three clock-types, four clocks and clock valve formula furnace roof, but have that sealing is unreliable, great bell weight big, the shape of cloth charge level is difficult to control, subject matter such as maintenance of equipment complexity, work-ing life are lacked.From the seventies in last century, no bell furnace roof has appearred, promptly adopt rotary distributor, this has brought new mode for blast furnace operating, very fast various places all over the world, from development trend, for large blast furnace, no bell furnace roof will be substituted with the bell furnace roof.No bell furnace roof many advantages are arranged, at first, the furnace throat cloth is undertaken by a swivel chute, both can rotatablely move (being called the rotation of β angle) by circumferential direction, can change turning angle (it is moving to be called the α angle lapping) again, thereby can realize the cloth of any shape of charge level satisfying the requirement of blast furnace material distribution and distribution of stock; Secondly,, make the steel construction that has alleviated furnace roof, reduced the total height of furnace roof because top construction simplifies greatly; Because it is heavy and precision machined again part has solved problems such as manufacturing, transportation, installation and maintenance replacing more up hill and dale to have cancelled great bell, big hopper and old-fashioned revolving top etc.; The investment of whole no bell furnace roof equipment can reduce to 50% one 60% of two clock bivalve types or two clock four valve formula furnace roofs.
At present, the blast furnace bellless furnace top distributor great majority that adopted are based on that the no bell furnace roof of Luxembourg Bao Er water (PW) technology produced, and principal character is:
(1) main rotation all is to be coupled in the upper end of chute with these two kinds of motions of fascinating, need to adopt the revolution support ring to come main rotation is separated with these two kinds of motions of fascinating, need realize fascinating of chute based on the swing arm or the gear of chute hangers, so stressed bigger on its chute hangers; Will accurately realize and control the moving main rotation with the β angle of α angle lapping on the chute, must adopt pivoted loop to separate or adopt differential motor to compensate, this needs a mechanism of overlapping complexity.
(2) mechanism's complexity, the parts of existing no bell furnace top system are more, weight of equipment is big, and more large size pivoted loop and gear are arranged, to manufacturing accuracy be equipped with higher requirement, whole device realizes that the moving precision of chute α angle lapping is lower.
(3) existing no bell furnace top system when operation synchronism relatively poor, inadequately steadily, fault is more; The phenomenon that running gear is stuck appears in (high temperature, certain air pressure, dust, greasy dirt) easily under complex operating environment, because hangers and gear thereof is stressed very big, so work-ing life is shorter.
Summary of the invention
At the deficiencies in the prior art and defective, the purpose of this invention is to provide a kind of bottom centre bearing rotary blast furnace bellless furnace top distributing gear, realize the bigger technical barrier of reactive force on the moving required mechanism of chute α angle lapping complexity, the chute hangers in the prior art to solve, overcome deficiencies such as no bell operation synchronism is relatively poor, running gear easily is stuck, work-ing life is short.
Technical scheme of the present invention is as follows:
A kind of rotary blast furnace bellless furnace top distributing gear, contain furnace throat, main rotating machine, main change and the chute of rotating back to, it is characterized in that: this distributor also contains the hinged bar of lift frame, lifting drive unit and " Y " type structure of a vertical movement, this hinged bar is arranged between lift frame bottom centre and the chute, described hinged bar and lift frame bottom centre are connected to globular hinge or two-way hinged, hinged bar is with being connected of chute both sides to be the plane hinged, and the medullary ray of lift frame is positioned on the medullary ray of furnace throat.
The lift frame of vertical movement of the present invention is made up of top lift frame and bottom lift frame, between the two for being rigidly connected.Described top lift frame is made up of three vertical support frames and two annulus; Described bottom lift frame is made up of three bending supports and two annulus.Between described lift frame and drive unit, be provided with guiding mechanism.
The present invention compared with prior art has the following advantages and effect:
1. fully with the main rotation of chute with fascinate and separate, can be by usual method, adopt a pivoted loop to realize main rotation, and chute fascinate by be positioned on the furnace throat medullary ray, the hinged bar of " Y " type structure of chute lower end realizes, fascinate and the sphere hinge or the two-way hinge of separating then by lift frame bottom centre place of main rotation realize; By chute master rotation and the acting in conjunction of fascinating, can realize go in ring cloth, screw distribution, fixed point cloth, fan-shaped cloth etc.; 2. promote upper frame and promote lower frame and can make separately, can carry out the scene and install with the form of parts; Whole lift frame is realized single vertical movement under the drive of drive unit, because the effect of liner is arranged, the side direction horizontal force that can balance be transmitted by hinged bar is to realize smooth running; 3. because hinged bar connects on the chute position of the fulcrum and hangers all have bigger distance, it is little that stressed general on its hangers and the hinged bar all do not have the hangers of bell than tradition, make the driving and the service rating of mechanism reduce greatly, one-piece construction is lighter and handier, the reliability height; 4. owing to will lead rotation and fascinate and separate by being positioned at ball-type hinge on the furnace throat medullary ray or two-way hinge, and all realized each single motion, reduced a large amount of transmission mechanisms, as gear, connecting rod, pivoted loop, its manufacture difficulty reduces greatly, also makes cost reduce; 5. the inclination angle of chute can reach the desired maximum angle of engineering design, add that drive unit is connected for on-the-spot with lift frame, this brings bigger convenience to maintenance, such as the ballistic shutter of anti-furnace charge of changing center support on the lift frame, the centering position of regulating hinged-support and replacing chute etc.
Description of drawings
Fig. 1 is the synoptic diagram of rotary blast furnace bellless furnace top distributing gear provided by the invention.
Fig. 2 is the one-piece construction synoptic diagram of lift frame embodiment.
Fig. 3 is the structural representation of the hinged bar of chute and " Y " type structure.
Among the figure: 1-ball-type hinged-support or two-way hinged-support; 2-shutter; 3-lifting lower frame; The hinge bar of 4-" Y " type structures; 5-chute; 6-planar hinge; 7-main rotating machine; 8-master rotates back to change; 9-chute hangers; 10-furnace throat; 11-lifting motor; 12-synchromesh gear ring; 13-lifting leading screw; 14-connect and cut with scissors; 15-guide deflection sheave; 16-lifting upper frame; 17-place is rigidly connected; The last annulus of 18-upper frame; The following annulus of 19-upper frame; The last annulus of 20-lower frame; The following annulus of 21-lower frame; 22-guiding track.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention, structure and embodiment are further described:
Fig. 1 is the synoptic diagram of rotary blast furnace bellless furnace top distributing gear provided by the invention.This distributor contains furnace throat 10, main rotating machine 7, leads the lift frame that rotates back to change 8, vertical movement, hinged bar and the chute 5 that promotes drive unit, " Y " type structure, this hinged bar is arranged between lift frame bottom centre and the chute, the hinged bar 4 of " Y " type structure and lift frame bottom centre are connected to globular hinge or two-way hinged 1, the hinged bar 4 of " Y " type structure and chute 5 both sides to be connected to the plane hinged 6, the medullary ray of lift frame is positioned on the medullary ray of furnace throat 10.The lift frame of vertical movement of the present invention is made up of top lift frame 16 and bottom lift frame 3, between the two for being rigidly connected.The top lift frame is made up of the last annulus 18 of three vertical support frames, upper frame and the following annulus 19 of upper frame; Bottom lift frame 3 is made up of the last annulus 20 of three bending supports and lower frame and the following annulus 21 of lower frame; The support of forming lift frame can adopt hollow steel pipe, and the cooling of support and ball-type hinge is carried out in water flowing in the middle of the steel pipe, also can adopt other thermal protection method.Between described lift frame and drive unit, be provided with guiding mechanism.
The hinged bar of " Y " type structure between lift frame bottom centre and the chute, its open space should guarantee that chute can pass through smoothly when fascinating rotation, it and lift frame be connected to ball-type hinge or two-way hinge, with two planar hinges that are connected to of chute both sides, above ball-type hinge or two-way hinged-support, be added with a ballistic shutter 2 of protection furnace charge.
The no bell furnace top system of the present invention's design, as shown in Figure 1, main rotary driving part branch can adopt traditional gear transmission system, by promoting drive unit, promote upper frame 16, promote lower frame 3 and form perpendicular lifting apparatus, promote drive unit and be positioned at distributor inside, can be by promoting motor 11, synchromesh gear ring 12, promoting leading screw 13 realizes, promote upper frame and be positioned at distributor, link to each other with the lifting underframe with the lifting drive unit respectively, promote lower frame and be positioned at the stove hall, and the hinged bar 4 that passes through " Y " type structure is connected with chute 5, promote upper frame and promote lower frame and can make separately, carry out the scene then and install with the form of parts; Promote drive unit and can adopt multiple spot to promote, as 3 or 4 liftings; Be provided with guiding mechanism between lift frame and lifting drive unit, guiding mechanism is made up of guiding track 22 and guide deflection sheave 15.Whole lift frame is realized single vertical movement under the drive that promotes drive unit, because the effect of guiding mechanism is arranged, the side direction horizontal force that can balance be transmitted by hinged bar is to realize smooth running.
Power can adopt hydraulic pressure or electric motor driving, and its key problem in technology is the vertical synchronization in the time of need accomplishing the multiple spot lifting, can adopt single motor 11 to drive synchromesh gear rings 12 and be used as synchronous device, is delivered to promote on the leading screw 13; Also can adopt a plurality of electro-hydraulic servo cylinder to promote synchronously, promote drive unit and cut with scissors 14 with promoting to adopt between the upper frame 16 to be connected, also to adopt guide deflection sheave 15 and guiding track 22 to carry out the side direction horizontal force that guide-localization and balance are transmitted by hinged bar, promote lower frame 3 and promote to adopt between the upper frame 16 and be rigidly connected, be positioned at the place 17 that is rigidly connected, connect in the time of can installing at the scene, but will carry out the centering adjusting of lower frame center support; The axis of chute hangers 9 should depart from the main rotating shaft line, between position of the fulcrum that is connected with the hinged bar 4 of " Y " type structure on the chute 5 and the chute hangers suitable distance should be arranged, can determine by actual calculation, when chute fascinates bottom position, should make the complete vertical drop of furnace charge of furnace throat 10, and do not brush up against chute 5, to realize the fixed point cloth of furnace throat medullary ray; When design, should take into full account the stroke of lifting gear, the height of distributor, this Several Factors of inclination maximum that the hinged bar on the chute connects position of the fulcrum, chute; The hinged bar that promotes between lower frame bottom centre's bearing and the chute is " Y " type structure, and its open space should guarantee that chute can pass through smoothly when fascinating rotation, as shown in Figure 3.
According to device shown in Figure 1, enumerate a concrete example below, the basic force-bearing situation of no bell furnace top system of the present invention is described; The chute length of considering is 4.5m, the distance of chute hangers axis runout furnace throat medullary ray is 0.4m, the chute deadweight is 80kN, the weight of furnace charge on chute is 40kN, the inclination maximum of chute when load is 52 °, inclination maximum when chute is unloaded is 72 °, adopts the length of 1 expression chute, adopts 1
BHinged bar connects the distance between fulcrum and the chute hangers on the expression chute, and relevant Mechanics Calculation the results are shown in Table 1; As a comparison, calculate to adopt no bell furnace top system stressed of traditional PW type, establish that the toothed segment reference radius is 0.5m on the chute hangers, calculate and act on stressed on chute hangers and the toothed segment, it the results are shown in the table 1.
The force analysis of table 1 blast furnace bellless furnace top distributing gear of the present invention and comparison
As can be seen from Table 1, be not that no bell of the present invention system is fairly simple in mechanism, having reduced need be with main rotation and the pivoted loop system that fascinates and separate, and the pressure that acts on the hinged bar is also smaller, on three lifting leading screws that this power decomposed in the vertical-lift mechanism, the value of each 80kN that only has an appointment, this value is pressed 60% of similar specifications design for the no bell of tradition system, the side direction horizontal component that the vertical-lift framework is born is 25kN～37kN, its value is also little, it will carry out balance by three liners, act on the chute hangers stressed and chute and furnace charge deadweight quite, if 1
BStrengthen, this value will significantly reduce, and this has very big benefit to load and the raising running stability that reduces main rotating machine.
Claims (6)
1, a kind of rotary blast furnace bellless furnace top distributing gear, contain furnace throat (10), main rotating machine (7), main change (8) and the chute (5) of rotating back to, it is characterized in that: this distributor also contains the lift frame of a vertical movement, promote the hinged bar (4) of drive unit and " Y " type structure, this hinged bar is arranged between described lift frame bottom centre and the chute, the hinged bar of described " Y " type structure and lift frame bottom centre are connected to globular hinge or two-way hinged (1), the hinged bar of " Y " type structure and chute both sides be connected to plane hinged (6), the open space of the hinged bar of " Y " type structure should guarantee that chute can pass through smoothly when fascinating rotation; The medullary ray of described lift frame is positioned on the medullary ray of furnace throat (10).
2, according to the described rotary blast furnace bellless furnace top distributing gear of claim 1, it is characterized in that: the lift frame of vertical movement is made up of top lift frame (16) and bottom lift frame (3), between the two by being rigidly connected.
3, according to claim 1 or 2 described rotary blast furnace bellless furnace top distributing gears, it is characterized in that: above spherical hinged-support or two-way hinged support, be added with a protection ballistic shutter of furnace charge (2).
4, according to the described rotary blast furnace bellless furnace top distributing gear of claim 3, it is characterized in that: described top lift frame (16) is made up of three vertical support frames and two annulus; Described bottom lift frame (3) is made up of three bending supports and two annulus.
5, according to the described rotary blast furnace bellless furnace top distributing gear of claim 1, it is characterized in that: between described lift frame and lifting drive unit, be provided with guiding mechanism.
6. according to the described rotary blast furnace bellless furnace top distributing gear of claim 1, it is characterized in that: described lifting drive unit comprises lifting motor (11), synchromesh gear ring (12) and promotes leading screw (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100642874A CN100491542C (en) | 2007-03-09 | 2007-03-09 | Rotary blast furnace material-free bell furnace top distributing gear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100642874A CN100491542C (en) | 2007-03-09 | 2007-03-09 | Rotary blast furnace material-free bell furnace top distributing gear |
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| Publication Number | Publication Date |
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| CN101016574A CN101016574A (en) | 2007-08-15 |
| CN100491542C true CN100491542C (en) | 2009-05-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101714001B (en) * | 2009-11-30 | 2013-06-26 | 中冶东方工程技术有限公司 | Automatic control device and method of rotary chute pair transmission tilt angle of blast furnace bell-less top |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831518B (en) * | 2010-05-18 | 2011-09-21 | 中国一冶集团有限公司 | Disassembly and assembly method of blast furnace bell-less top distributor tilting device |
| CN107576197B (en) * | 2017-09-01 | 2019-12-06 | 中冶东方工程技术有限公司 | mechanical transmission submerged arc furnace distributing device |
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2007
- 2007-03-09 CN CNB2007100642874A patent/CN100491542C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101714001B (en) * | 2009-11-30 | 2013-06-26 | 中冶东方工程技术有限公司 | Automatic control device and method of rotary chute pair transmission tilt angle of blast furnace bell-less top |
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| CN101016574A (en) | 2007-08-15 |
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Granted publication date: 20090527 Termination date: 20120309 |