CN103629932A - Differential pressure sealing device and sintering or cooling equipment - Google Patents
Differential pressure sealing device and sintering or cooling equipment Download PDFInfo
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- CN103629932A CN103629932A CN201310538864.4A CN201310538864A CN103629932A CN 103629932 A CN103629932 A CN 103629932A CN 201310538864 A CN201310538864 A CN 201310538864A CN 103629932 A CN103629932 A CN 103629932A
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Abstract
The invention provides a differential pressure sealing device and a sintering machine. The differential pressure sealing device is used for sealing the gap between the bottom of a trolley and the top of an air box and comprises a sealing plate located beside one side wall of the air box. The differential pressure sealing device further comprises a sealing plate supporting piece arranged on the top of the air box, the sealing plate is arranged on the sealing plate supporting piece, and the sealing plate supporting piece presses the sealing plate towards the bottom of the trolley; the vertical section of the sealing plate is of an L shape; the sealing plate comprises a horizontal portion and a vertical portion, wherein the horizontal portion makes contact with the bottom surface of the trolley, and the vertical portion makes contact with one side wall of the air box. Due to the fact that the pressure between the air box and the bottom of the trolley is different from the external pressure of the air box, a pressure difference is produced; meanwhile, the sealing plate supporting piece is arranged and used for ejecting the sealing plate upwards. In this way, when the sealing plate is absorbed towards one side of the air box under the action of negative pressure, the sealing plate keeps making contact with the bottom or the downside portion of the trolley, and therefore the sealing effect is guaranteed.
Description
Technical field
The invention belongs to sintering or cooling device technical field in smelting industry, relate in particular to a kind of pressure difference of utilizing bellows inside and bellows outside to technology that between chassis and bellows, gap seals.
Background technology
In iron and steel is produced, SINTERING PRODUCTION is one of important operation, and it provides the raw material of high-quality for blast furnace ironmaking.In existing sintering system, chassis is positioned at sintering machine wind box top, after filling compound on chassis, on the trolley track of bellows both sides, move, through ignition furnace, at compound top, light a fire, bellows are at chassis downdraft, make compound by the downward sintering in top of chassis, in order to make bellows reach good exhausting effect, must guarantee has reliable sealing between sintering machine wind box and chassis, do not produce leak out or leaking out of producing the least possible.It is the Focal point and difficult point in sintering process design and production maintenance that minimizing sintering leaks out, due to the gap that exists between chassis and chassis and between chassis and bellows, leak out serious, even reach more than 50%, not only waste energy, form noise pollution environment, and limiting the raising of SINTERING PRODUCTION efficiency and affecting product quality.
Traditional chassis carries out the sealing of chassis both sides with the most elasticity trip plates that are arranged at pallet bottom that adopt of sealing of sintering bellows with the mode that the slideway that is arranged at bellows both sides contacts, the contact-making surface great majority of trip plate-chute type sealing are flat, rely on the pressure of trip plate top spring, upper and lower two planes are in contact with one another when relative sliding and realize sealing, in use, in order to reduce the frictional resistance between elasticity trip plate and slideway, generally on ground way, establish oil groove, by electric dry oil pump, carry out the high temperature resistant butter of continual injection, because bellows environment temperature of living in is high, easily cause the butter dehydration of filling to become dry, be unfavorable for the filling of butter and lubricating of slideway, and in chassis running, sintering raw material and grog are easy to again be bonded on elastic slideway, elastic slideway is ground, damage, there is leaking out gap, cause a large amount of leaking out, the reactance capacity of sintering blower fan is increased, and easily cause sintering time to extend, even sintering finished rate reduces, sintering output declines.Due to slideway sealing, adopt the form of hard sealing simultaneously, in car puller or chain belt machine running, increased running resistance, more accelerated the wearing and tearing of elastic slideway, encouraged the possibility of leaking out.Because its Air Leakage cannot solve, therefore traditional sintering only has the exhausting amount that strengthens sintering blower fan to guarantee sintering output, has caused so again significantly improving of sintering power consumption and operating cost, maintenance cost.
In order to address the above problem, applicant has designed the side-sealing device between a kind of chassis and bellows, Chinese Patent Application No. is 201110030113.2, the sealing device of this chassis and bellows comprises: be arranged at the sealing plate of chassis lower outside face position and sealing plate be installed on to the sealing plate installation component on the mounting bracket of being located at bellows top outer, sealing device adopts the mode of sealing from the side, the negative-pressure adsorption sealing plate forming while utilizing bellows exhausting, seals the gap between pallet bottom and bellows top.Although side seal can overcome seal deficiency easy to wear in traditional trip plate-slideway upper-lower compacting hermetically-sealed construction, leak out low, improve air quantity utilization rate, but because sealing plate is mounted in sintering machine wind box top, rely on sealing plate side and chassis contacts side surfaces to realize sealing, but the sealing effectiveness between sealing plate top and chassis bottom surface is not good.
Summary of the invention
The object of this invention is to provide the differential pressure sealing device of good sealing effect between a kind of chassis and bellows and use sintering or the cooling device of this differential pressure sealing device.
To achieve these goals, the present invention takes following technical solution:
Differential pressure sealing device, for sealing the gap between pallet bottom and bellows top, comprise the flexible sealing plate that is positioned at bellows sidewall side; Be arranged at the sealing plate support member at bellows top, described sealing plate is arranged on described sealing plate support member, and described sealing plate support member pushes up described sealing plate to pallet bottom; The vertical section of described sealing plate is shaped as L shaped, and sealing plate comprises horizontal part and vertical portion, and described horizontal part contacts with described pallet bottom, and described vertical portion contacts with bellows sidewall.
Preferably, described sealing plate support member is the support spring vertically arranging, and described sealing plate is arranged at described support spring top.
Preferably, described sealing plate support member is the riser arranging along chassis direct of travel, and described sealing plate is arranged at described riser top, is positioned at described riser inner side.
Preferably, described riser has the elastic portion of arc.
Preferably, described sealing plate support member comprises adjusting cylinders, support lever and installing rack, described adjusting cylinders and installing rack are arranged on the support body at bellows top, the rotating shaft of described support lever is arranged on described installing rack, the piston rod of described adjusting cylinders is connected with one end of support lever, and the other end of described support lever is connected with the horizontal part of described sealing plate.
Preferably, described adjusting cylinders is substituted by push rod and the thrust spring being sheathed on described push rod, and one end of described push rod is connected with one end of described support lever.
Preferably, described sealing plate is the bar shaped that vertical section is shaped as rectangle, and described pallet bottom is provided with the groove extending along chassis length direction, and described sealing plate support member is along described groove setting, and described sealing plate contacts with inside grooves.
Preferably, in described groove, be provided with auxiliary sealing member, described auxiliary sealing member is reverse U shape or L shaped or T font, and the end face of described sealing plate contacts with described auxiliary sealing member inner bottom surface, side contacts with the side of described auxiliary sealing member.
Preferably, described pallet bottom is provided with the groove extending along chassis length direction, in described groove, be provided with auxiliary sealing member, described auxiliary sealing member is reverse U shape or L shaped or T font, the horizontal part of described sealing plate contacts with described auxiliary sealing member inner top surface, and described vertical portion contacts with the sidewall of bellows sidewall and/or described auxiliary sealing member.
Be provided with the sintering machine of aforesaid differential pressure sealing device, comprise the chassis that is positioned at bellows top, chassis is taken turns and is supported on track and can above bellows, moves along track by chassis, and described differential pressure sealing device is arranged between described bellows and described pallet bottom.
As shown from the above technical solution, differential pressure sealing device of the present invention, utilizing pressure between bellows and pallet bottom and the pressure differential of the different formation of bellows external pressure, sealing plate and bellows sidewall or auxiliary sealing member sidewall are fitted, sealing plate support member is set, for the jack-up sealing plate that makes progress, make sealing plate when being stressed and being affixed to bellows sidewall, keep sealing plate to contact with pallet bottom or bottom side, guarantee sealing effectiveness, differential pressure sealing device of the present invention not only can be for step-by-step movement sintering/cooling device, be particularly useful for chain-belt type sintering/cooling device.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the structural representation of embodiment 1 another angle.
Fig. 3 is the structural representation of the embodiment of the present invention 2.
Fig. 4 is the partial structurtes schematic diagram of embodiment 2 chassis and side-sealing device.
Fig. 5 is the schematic diagram of another angle of Fig. 4.
Fig. 6 is the structural representation of the embodiment of the present invention 3.
Fig. 7 is the structural representation of the embodiment of the present invention 4.
Fig. 8 is the structural representation of the embodiment of the present invention 5.
Fig. 9 is the structural representation of the embodiment of the present invention 6.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in more detail.
The specific embodiment
The present invention is further illustrated as example to take agglomerating plant below.As depicted in figs. 1 and 2, in agglomerating plant chassis 1 by chassis take turns 1a be set up in bellows 2 above, chassis wheel 1a is placed on track 3, in sintering process, chassis 1 moves along track 3 above bellows 2, through cloth, igniting, sintering, be cooled to tail to complete after sintering overall process, chassis 1 ploughs under the sintering deposit in it in groove of sintering deposit ore deposit, and then chassis 1 is back to originating location, repeats above-mentioned cycle sintering process.For the ease of following description, the length direction of chassis 1 (being the direct of travel of chassis) is defined as longitudinally, the width of chassis 1 (perpendicular to length direction) is defined as laterally, and a side at relatively close bellows center is defined as to inner side.On sintering machine support body, be provided with sintering silo, material-feeding mechanism, ignition furnace, holding furnace, ash bucket, soot cleaning valve, car puller and shedding mechanism, disintegrating machine and mineral aggregate conveyer, above-mentioned parts and mounting means are identical with corresponding component and the mounting means of sintering machine in prior art, at this, do not repeat.
In chassis 1 bottom, be provided with the groove 1b extending along chassis 1 length direction, in groove 1b, be provided with the auxiliary sealing member 1c that vertical section is shaped as reverse U shape, the auxiliary sealing member 1c of the present embodiment is that stainless steel is made, and auxiliary sealing member 1c madial wall is through fine finishining.Auxiliary sealing member 1c fixes by bolt and groove 1b.
On bellows 2 top sidewalls, be provided with sealing plate support member 4, the sealing plate support member 4 of the present embodiment is riser, and its sidewall 2a that is fixed on bellows 2 by pressing plate 4a and bolt 4b is upper, and sealing plate support member 4 also can be fixed on the horizontal plane of bellows side.The sealing plate support member 4 of the present embodiment arranges along track 3, and the sealing plate support member 4 of riser shape forms one envelope wall being positioned at outside bellows 2 simultaneously.The sealing plate 5 of inverted L-shaped is set on sealing plate support member 4, and sealing plate 5 comprises horizontal part 5a and vertical portion 5b.Sealing plate 5 fixes by bolt and sealing plate support member 4 tops, and under the supporting role of sealing plate support member 4, the top of sealing plate 5 is positioned at auxiliary sealing member 1c, and the horizontal part 5a of sealing plate 5 contacts with the inner bottom surface of auxiliary sealing member 1c.As preferred technical scheme, the sealing plate support member 4 of the present embodiment has the elastic portion 4c of an arc, sealing plate 5 in the vertical directions that elastic portion 4c allows to be arranged on sealing plate support member 4 have certain position adjustments amount, can fit in pallet bottom by conformal, and sealing effectiveness is better.Sealing plate 5 employings of the present embodiment have certain thickness heat-resistant seal material makes, as heat resistant and wear resistant rubber.
The present embodiment arranges auxiliary sealing member 1c in the groove 1b of pallet bottom, can extend the space of groove 1b downwards on the one hand, guarantee the contact area of sealing plate and groove, realize excellent sealing, on the other hand, the surface of auxiliary sealing member is easier to fine finishining, and smooth surface causes wearing and tearing less to sealing plate.But sealing plate also can be directly and the contact grooves of pallet bottom.
During sintering fan operation, between pallet bottom 1 and bellows 2, can form negative pressuren zone, make pressure between pallet bottom and bellows be less than the pressure of bellows outside, under the suction-operated of negative pressure, sealing plate 5 can be affixed to the sidewall 2a of bellows 2 and the madial wall of auxiliary sealing member 1c, sealing plate 5 and sealing plate support member 4 form side seal wall, realize the sealing between pallet bottom and bellows.
As shown in Fig. 3, Fig. 4 and Fig. 5, the present embodiment place different from embodiment 1 is: the sealing plate support member 4 of the present embodiment comprises adjusting cylinders 4-1, support lever 4-2 and installing rack 4-3.Adjusting cylinders 4-1 is horizontally placed on sintering machine support body, be positioned at bellows 2 sidewall 2a sides.Installing rack 4-3 is fixed on sintering machine support body, and rotating shaft 4-2a and the installing rack 4-3 of support lever 4-2 fix.The piston rod of adjusting cylinders 4-1 is connected with one end of support lever 4-2, the other end of support lever 4-2 (support end) is connected with the horizontal part 5a of sealing plate 5, adjusting cylinders 4-1 is used for promoting support lever 4-2, makes support lever 4-2 4-2a rotation around the shaft, thereby to upper support sealing plate 5.Under the effect of adjusting cylinders 4-1, the support lever 4-2 jack-up sealing plate 5 that makes progress, makes the horizontal part 5a of sealing plate 5 contact with chassis 1 bottom (or chassis groove floor).
When sintering fan operation, between chassis 1 and bellows 2, form negative pressuren zone, under the suction-operated of negative pressure, sealing plate 5 vertical portion 5b medial surface automatic paste tightening bellows 2 sidewall 2a, the sealed plate 5 in gap between bellows 2 tops and chassis 1 bottom is sealed completely, realize sealing effectiveness.
As a preferred technical scheme, the sidewall that in the present embodiment, bellows 2 contact with sealing plate is not perpendicular, but an inclined-plane adopts the contact-making surface tilting that the space of adjusting can be provided when chassis sideslip, guarantees sealing effectiveness.
As shown in Figure 6, the present embodiment place different from embodiment 2 is: the sealing plate support member 4 of the present embodiment is support spring, the axis in the vertical direction of support spring, and some support springs are arranged at intervals on bellows 2 top support body horizontal planes.Sealing plate 5 is installed on the top of support spring, and under the elastic force effect of support spring, sealing plate 5, by the jack-up that makes progress, touches the horizontal part 5a of sealing plate 5 and the bottom connection of chassis 1.When sintering fan operation, between chassis 1 and bellows 2, form negative pressuren zone, under the suction-operated of negative pressure, the sidewall 2a close contact of the vertical portion 5b of sealing plate 5 and bellows 2, forms sealing.
As shown in Figure 7, the present embodiment place different from embodiment 1 is: the auxiliary sealing member 1c of the present embodiment is L shaped, auxiliary sealing member 1c is arranged in the groove 1b of chassis 1 bottom, and sealing plate 5 is shaped as the stripe board of rectangle for vertical section, and sealing plate 5 is arranged on sealing plate support member 4 tops.Because sealing plate support member 4 arranges along track 3, sealing plate support member 4, when supporting sealing plate 5, also can form one envelope wall.
When sintering fan operation, sealing plate 5 is adsorbed to auxiliary sealing member 1c side and contacts under suction function, the end face of sealing plate 5 contacts with auxiliary sealing member 1c inner top surface under the effect of sealing plate support member 4 simultaneously, sealing plate 5 matches with sealing plate support member 4, at sealing plate 5, sealing plate support member, between 4 inner sides, form confined space, realize sealing.Because sealing plate support member 4 has the effect of sealing surface, so 5 of sealing plates need can realize the sealing of sidepiece with pallet bottom close contact together with sealing plate support member 4, and sealing plate 5 not necessarily will contact with the sidewall 2a of bellows.
As shown in Figure 8, the present embodiment place different from embodiment 4 is: the auxiliary sealing member 1c being arranged in the groove 1b of chassis 1 bottom is roughly T-shaped, the medial surface of sealing plate 5 contacts with the lateral surface of auxiliary sealing member 1c, and sealing plate 5 fitted seal plate supports 4 are realized suction side sealing.
Embodiment 6
As shown in Figure 9, the present embodiment place different from embodiment 2 is: the present embodiment uses thrust spring 4-1 ' to substitute adjusting cylinders, thrust spring 4-1 ' is sheathed on push rod 4-4, push rod 4-4 is fixing by installing rack 4-3 ', push rod 4-4 is equivalent to the piston rod of adjusting cylinders, and rotating shaft 4-2a is also arranged on installing rack 4-3 '.Push rod 4-4, under the elastic force effect of thrust spring 4-1 ', promotes support lever 4-2, makes the support lever 4-2 jack-up sealing plate 5 that makes progress, and contacts with pallet bottom, realizes sealing.
When the present invention utilizes sintering or cooling device operation, pressure between chassis and bellows is different with the pressure of bellows outside and have pressure differential, sealing plate is arranged between pallet bottom and bellows sidewall, sealing plate contacts with bellows sidewall or auxiliary sealing member medial surface under positive pressure, and then the gap between the sidewall of pallet bottom and bellows is sealed.When the pressure between chassis and bellows is negative pressure (between chassis and bellows, pressure is less than bellows external pressure), as in the foregoing embodiment, sealing plate is arranged at bellows sidewall outside, and the sealing of sealing plate contacts with the lateral wall of bellows; When the pressure between chassis and bellows is malleation (being that between chassis and bellows, pressure is greater than bellows external pressure), corresponding, sealing plate can be arranged at bellows inside sidewalls, and the sealing of sealing plate contacts with the madial wall of bellows.Pressure reduction side-sealing device of the present utility model not only can be used on stepping agglomerating plant, also can be used on chain band agglomerating plant, in addition, previous embodiment all be take agglomerating plant and is described as example, cooling device and agglomerating plant structure are roughly the same, so this side-sealing device can be used in belt or step-by-step movement cooling device equally.
In above-described embodiment, the length of sealing plate and chassis is equal in length, but the replacement scheme as technique scheme, the length of sealing plate also can be different from the length of chassis, for example the length of sealing plate can be greater than or less than chassis length, the sealing plate length of installing on adjacent chassis only need shorten or increase corresponding length, those skilled in the art can make respective design according to different situations, realize full section sealing.
In this description, various piece adopts the mode go forward one by one to describe, and each part stresses is the difference with other parts, between various piece same or similar part mutually referring to.In previous embodiment, form between sealing plate, sealing plate support member, auxiliary sealing member can combine mutually, for example the structure of the sealing plate of embodiment 2 and sealing plate support member also can be used in embodiment 1, it is the disclosed form of embodiment that syntagmatic between these parts has more than, above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to embodiment illustrated herein, but will meet the wide region consistent with principle disclosed herein and features of novelty.
Claims (10)
1. differential pressure sealing device, is positioned at the other flexible sealing plate of bellows sidewall for sealing the gap between pallet bottom and bellows top, comprising; It is characterized in that, also comprise:
Be arranged at the sealing plate support member at bellows top, described sealing plate is arranged on described sealing plate support member, and described sealing plate support member pushes up described sealing plate to pallet bottom;
The vertical section of described sealing plate is shaped as L shaped, and sealing plate comprises horizontal part and vertical portion, and described horizontal part contacts with described pallet bottom, and described vertical portion contacts with bellows sidewall.
2. differential pressure sealing device according to claim 1, is characterized in that: the support spring of described sealing plate support member for vertically arranging, described sealing plate is arranged at described support spring top.
3. differential pressure sealing device according to claim 1, is characterized in that: the riser of described sealing plate support member for arranging along chassis direct of travel, described sealing plate is arranged at described riser top, is positioned at described riser inner side.
4. differential pressure sealing device according to claim 3, is characterized in that: described riser has the elastic portion of arc.
5. differential pressure sealing device according to claim 1, it is characterized in that: described sealing plate support member comprises adjusting cylinders, support lever and installing rack, described adjusting cylinders and installing rack are arranged on the support body at bellows top, the rotating shaft of described support lever is arranged on described installing rack, the piston rod of described adjusting cylinders is connected with one end of support lever, and the other end of described support lever is connected with the horizontal part of described sealing plate.
6. differential pressure sealing device according to claim 5, is characterized in that: described adjusting cylinders is substituted by push rod and the thrust spring being sheathed on described push rod, and one end of described push rod is connected with one end of described support lever.
7. according to the differential pressure sealing device described in claim 3 or 4, it is characterized in that: described sealing plate is the bar shaped that vertical section is shaped as rectangle, described pallet bottom is provided with the groove extending along chassis length direction, described sealing plate support member is along described groove setting, and described sealing plate contacts with inside grooves.
8. differential pressure sealing device according to claim 7, it is characterized in that: in described groove, be provided with auxiliary sealing member, described auxiliary sealing member is reverse U shape or L shaped or T font, and the end face of described sealing plate contacts with described auxiliary sealing member inner bottom surface, side contacts with the side of described auxiliary sealing member.
9. according to the differential pressure sealing device described in claim 1 to 6 any one, it is characterized in that: described pallet bottom is provided with the groove extending along chassis length direction, in described groove, be provided with auxiliary sealing member, described auxiliary sealing member is reverse U shape or L shaped or T font, the horizontal part of described sealing plate contacts with described auxiliary sealing member inner top surface, and described vertical portion contacts with the sidewall of bellows sidewall and/or described auxiliary sealing member.
10. be provided with claim 1 to or 9 any one described in the sintering machine of differential pressure sealing device, it is characterized in that: comprise the chassis that is positioned at bellows top, chassis is taken turns and is supported on track and can above bellows, moves along track by chassis, and described differential pressure sealing device is arranged between described bellows and described pallet bottom.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310538864.4A CN103629932B (en) | 2013-11-01 | 2013-11-01 | Differential pressure sealing device and sintering or cooling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310538864.4A CN103629932B (en) | 2013-11-01 | 2013-11-01 | Differential pressure sealing device and sintering or cooling device |
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| CN103629932A true CN103629932A (en) | 2014-03-12 |
| CN103629932B CN103629932B (en) | 2016-01-20 |
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| WO2015180264A1 (en) * | 2014-05-30 | 2015-12-03 | 福建冠福现代家用股份有限公司 | Closed energy-saving tunnel kiln |
| CN106323001A (en) * | 2015-06-30 | 2017-01-11 | 宝山钢铁股份有限公司 | End sealing device of sintering machine |
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| CN103629932B (en) | 2016-01-20 |
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