CN109612281B - Sintering cooling machine - Google Patents
Sintering cooling machine Download PDFInfo
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- CN109612281B CN109612281B CN201811521484.9A CN201811521484A CN109612281B CN 109612281 B CN109612281 B CN 109612281B CN 201811521484 A CN201811521484 A CN 201811521484A CN 109612281 B CN109612281 B CN 109612281B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
- F27D15/0206—Cooling with means to convey the charge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0073—Seals
- F27D99/0076—Furnace car seals, i.e. seals used in continuous furnaces or kilns for preventing gas or heat exchange between heating chamber and the area comprising driving means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/04—Sintering
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a sintering cooler, and belongs to the field of sintering equipment in the ferrous metallurgy industry. The sintering cooler of the present invention comprises: a multi-section cooling trolley for loading sinter; a plurality of smoke hoods positioned above the multi-section cooling trolley; the dynamic sealing device is used for sealing a gap between the cooling trolley and the smoke hood; wherein, the upper end of the dynamic sealing device is fixed on the side surface of the smoke hood, and the lower end is hung downwards and pressed on the cooling trolley under the action of gravity. The invention improves the sealing effect between the cooling bed trolley and the smoke hood.
Description
The patent application of the invention aims at the following application numbers: 2016110700485, the filing date of the original application is: 2016-11-29, the name of the invention is: a sintering cooler and a dynamic sealing device thereof.
Technical Field
The invention belongs to the field of sintering equipment in the ferrous metallurgy industry, and particularly relates to a sintering cooler.
Background
In the production of steel, sintering production is one of important processes, and provides a high-quality raw material for blast furnace ironmaking. After sintering is finished, when the cold bed trolley bears the blazing sintering clinker and moves directionally on the rail, the air box blows upwards at the bottom of the cold bed trolley, cold air passes through the sintering material layer to cool the sintering material, and the cold air is heated and then is sent to the waste heat boiler through the smoke hood to generate electricity, so that sensible heat in the sintering material layer is recovered by the method, and the energy utilization efficiency is improved. In order to raise the temperature of the hot air as much as possible, it is necessary to ensure reliable sealing between the cooling bed trolley and the smoke hood in the sinter cooler, i.e. no or as little air leakage as possible occurs. The reduction of air leakage of the sintering cooler is a key point and a difficulty point of sintering design and production maintenance, and because a gap exists between the top end of a cooling bed trolley of the sintering cooler and the bottom of a smoke hood, the air leakage is serious and sometimes even reaches more than 50 percent, the generated energy of a waste heat boiler is reduced, the power consumption of an air blower is increased, noise pollution is formed, and the improvement of the sintering production efficiency and the influence on the product quality are limited.
In the traditional sintering cooler, a fiberboard with certain strength is adopted for sealing between a cooling bed trolley and a smoke hood, one side of the fiberboard is fixed on the smoke hood, and the sealing is realized by utilizing the dynamic friction between the fiberboard and the top end of the cooling bed trolley, but the sealing effect of the linear sealing mode is relatively poor, and due to the fact that the environmental temperature difference between the two sides of the fiberboard is large, the strength of the fiberboard is reduced after periodic thermal expansion and cold contraction, the pressure of the deformed fiberboard on the top end of the cooling bed trolley is reduced, the gap between the fiberboard and the cooling bed trolley is larger and larger, and the air leakage rate is gradually increased; moreover, due to the abrasion of the rails, the adjacent cooling bed trolleys on the rails are easy to misplace, and the misplacement can cause the cooling bed trolleys to scrape and collide with the fiber boards in the moving process to cause the fiber boards to be damaged or even fall off, so that the air leakage rate is greatly increased.
With respect to the sealing device used in the sinter cooler, there are related patent publications in the prior art, such as patent publication nos: CN 101368794 a, published: 2, 18 months in 2009, the name of the invention and creation is: the application discloses a sintering cooler and a suspension type sealing device thereof, which can reduce the power consumption of a fan, reduce the air leakage of equipment, improve the waste heat recovery efficiency and improve the environment; the sinter cooler of this application comprises: a multi-section trolley for loading sinter; a plurality of elevated smoke hoods positioned above the multi-section trolley; the slide way of the air box is in sliding contact with the elastic sliding plate of the corresponding trolley; the suspension type sealing device is arranged between every two adjacent smoke hoods on the multi-section trolley; the upper end of the suspension type sealing device is suspended at the joint part of two adjacent smoke hoods, and the lower end of the suspension type sealing device is suspended on sinter loaded on the trolley. However, the disadvantages of this application are: (1) the suspended sealing mode sealing part is a joint part of two adjacent smoke hoods, only plays a role of statically isolating the two adjacent smoke hoods for static sealing for preventing transverse wind channeling, and cannot be suitable for dynamic sealing between the cooling bed trolley and the smoke hoods; (2) the flexible sealing mode relies on the effect of wind pressure to seal, and when great fluctuation appears in the wind pressure, the easy leakage that appears, sealed stability is not high.
In conclusion, how to improve the sealing effect between the cooling bed trolley and the smoke hood is a technical problem to be solved urgently in the prior art.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to overcome the defect of poor sealing effect between a cooling bed trolley and a smoke hood in the prior art, provides a sintering cooler and improves the sealing effect between the cooling bed trolley and the smoke hood.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the sintering cooler of the present invention comprises:
a multi-section cooling trolley for loading sinter;
a plurality of smoke hoods positioned above the plurality of sections of cooling trolleys;
further comprising:
the dynamic sealing device is used for sealing a gap between the cooling trolley and the smoke cover;
the upper end of the dynamic sealing device is fixed on the side surface of the smoke hood, and the lower end of the dynamic sealing device is hung downwards and pressed on the cooling trolley under the action of gravity.
As a further improvement of the sinter cooler of the invention, the dynamic sealing device comprises:
the upper end of the heat-resistant sealing layer is fixed on the side surface of the smoke hood;
and a weight attached to a lower end of the heat-resistant sealing layer.
As a further improvement of the sinter cooler of the invention, the heat-resistant sealing layer is made of a flexible material;
the upper part of the cooling trolley is provided with an inclined plate which inclines downwards, and the lower end of the heat-resistant sealing layer is pressed on the surface of the inclined plate under the action of the gravity of a counterweight.
As a further improvement of the sinter cooler of the invention, the heat-resistant sealing layer is arranged along the length direction of the smoke hood, and two sides of the lower end of the heat-resistant sealing layer are respectively provided with a guide plate, and the guide plates and the surface of the inclined plate keep an included angle.
As a further improvement of the sintering cooler of the present invention, the heat-resistant sealing layer includes at least one layer of high-temperature-resistant cloth, and the weight is fixed on the surface of the high-temperature-resistant cloth or in the interlayer of the high-temperature-resistant cloth.
As a further improvement of the sintering cooler, the counterweight is placed in the interlayer of the outermost high-temperature-resistant cloth, and the counterweight is sequentially wrapped by the heat-resistant flexible layer and the heat-resistant binding layer from inside to outside.
As a further improvement of the sintering cooler, the two sides of the outermost layer of high-temperature-resistant cloth for placing the counterweight along the length direction are respectively provided with a baffle, and the bolts sequentially penetrate through the baffles and the outermost layer of high-temperature-resistant cloth, so that the interlayers of the outermost layer of high-temperature-resistant cloth along the two sides of the length direction are clamped;
the middle part of the outmost high-temperature-resistant cloth is provided with a pressing plate extending along the length direction, two ends of the pressing plate along the width direction are respectively provided with an outward arc-shaped flanging, and bolts sequentially penetrate through the pressing plate and the outmost high-temperature-resistant cloth, so that the interlayer in the middle of the outmost high-temperature-resistant cloth is clamped.
As a further improvement of the sintering cooler of the invention, the heat-resistant sealing layer sequentially comprises a bottom layer high-temperature-resistant cloth, a middle layer high-temperature-resistant cloth and an outer layer high-temperature-resistant cloth from inside to outside, and the counterweight is placed in the interlayer of the outer layer high-temperature-resistant cloth;
the counterweight is an iron chain or other counterweight units adopting flexible connection;
the included angle between the inclined plate and the horizontal plane is 15-75 degrees;
the heat-resistant flexible layer is made of heat-preservation cotton and/or ceramic fiber cloth, and the heat-resistant binding layer is made of metal foil paper and/or a metal foil belt.
As a further improvement of the sintering cooler of the invention, the upper end of the heat-resistant sealing layer is clamped and fixed between an inner angle steel and an outer angle steel, and the outer surface of the bent part of the inner angle steel is welded on the side surface of the smoke hood in a sealing manner;
or an asbestos plate is in threaded connection with the side face of the smoke hood, and the upper end of the heat-resisting sealing layer is clamped and fixed between the asbestos plate and the smoke hood.
The dynamic sealing device for the sintering cooler comprises:
the dynamic sealing device is used for sealing a gap between a cooling trolley of the sintering cooler and the smoke hood;
the upper end of the dynamic sealing device is fixed on the side surface of the smoke hood, and the lower end of the dynamic sealing device is hung downwards and pressed on the cooling trolley under the action of gravity.
As a further improvement of the dynamic sealing apparatus of the present invention, the dynamic sealing device includes:
the upper end of the heat-resistant sealing layer is fixed on the side surface of the smoke hood;
and a weight attached to a lower end of the heat-resistant sealing layer.
As a further improvement of the dynamic sealing device of the invention, the heat-resistant sealing layer is made of flexible material;
the upper part of the cooling trolley is provided with an inclined plate which inclines downwards, and the lower end of the heat-resistant sealing layer is pressed on the surface of the inclined plate under the action of the gravity of a counterweight.
As a further improvement of the dynamic sealing device, the heat-resistant sealing layer is arranged along the length direction of the smoke hood, two sides of the lower end of the heat-resistant sealing layer are respectively provided with a guide plate, and the guide plates and the surface of the inclined plate keep an included angle.
As a further improvement of the dynamic sealing device of the present invention, the heat-resistant sealing layer comprises at least one layer of high temperature resistant cloth, and the weight is fixed on the surface of the high temperature resistant cloth or in the interlayer of the high temperature resistant cloth.
As a further improvement of the dynamic sealing device, the counterweight is placed in the interlayer of the outermost high-temperature-resistant cloth, and the counterweight is sequentially wrapped by the heat-resistant flexible layer and the heat-resistant binding layer from inside to outside.
As a further improvement of the dynamic sealing equipment, the two sides of the outermost layer of high-temperature-resistant cloth for placing the counterweight along the length direction are respectively provided with a baffle, and the bolts sequentially penetrate through the baffle and the outermost layer of high-temperature-resistant cloth, so that the interlayers of the outermost layer of high-temperature-resistant cloth along the two sides of the length direction are clamped;
the middle part of the outmost high-temperature-resistant cloth is provided with a pressing plate extending along the length direction, two ends of the pressing plate along the width direction are respectively provided with an outward arc-shaped flanging, and bolts sequentially penetrate through the pressing plate and the outmost high-temperature-resistant cloth, so that the interlayer in the middle of the outmost high-temperature-resistant cloth is clamped.
As a further improvement of the dynamic sealing device, the heat-resistant sealing layer sequentially comprises bottom-layer high-temperature-resistant cloth, middle-layer high-temperature-resistant cloth and outer-layer high-temperature-resistant cloth from inside to outside, and the counterweight is placed in the interlayer of the outer-layer high-temperature-resistant cloth;
the counterweight is an iron chain or other counterweight units adopting flexible connection;
the included angle between the inclined plate and the horizontal plane is 15-75 degrees;
the heat-resistant flexible layer is made of heat-preservation cotton and/or ceramic fiber cloth, and the heat-resistant binding layer is made of metal foil paper and/or a metal foil belt.
As a further improvement of the dynamic sealing device, the upper end of the heat-resistant sealing layer is clamped and fixed between an inner angle steel and an outer angle steel, and the outer surface of the bent part of the inner angle steel is welded on the side surface of the smoke hood in a sealing manner;
or an asbestos plate is in threaded connection with the side face of the smoke hood, and the upper end of the heat-resisting sealing layer is clamped and fixed between the asbestos plate and the smoke hood.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) the sintering cooler is developed aiming at the problems that the existing cooling trolley is not well sealed with an upper smoke hood in the moving process, hot air leaks outwards, cold air is sucked and the like.
(2) In the existing practical production process, a material with high temperature resistance, good wear resistance and good lubricity is difficult to find to replace a fiberboard, so that although the sealing mode of the fiberboard has some problems, a person skilled in the art is difficult to have an incentive to research the sealing problem at the position. The sintering cooler of the invention can install and allocate a simple and effective dynamic sealing device in a short time only according to the general maintenance requirements of the sintering cooler, and is suitable for popularization and use.
Drawings
FIG. 1 is a schematic view of the structure of a sinter cooler of example 1;
FIG. 2 is a schematic sectional view taken along line A-A in FIG. 1;
FIG. 3 is an enlarged view of a portion I of FIG. 1;
fig. 4 is a partial enlarged view of a portion ii in fig. 2.
The reference numerals in the schematic drawings illustrate:
1. inner angle steel; 2. outer angle steel; 3. a smoke hood; 4. cooling the trolley; 5. a compression plate; 6. a baffle plate; 7. a guide plate; 8. a counterweight; 9. the bottom layer is made of high-temperature-resistant cloth; 10. the middle layer is made of high-temperature-resistant cloth; 11. outer layer high temperature resistant cloth; 12. a heat-resistant sealing layer; 13. an inclined plate; 14. a heat resistant flexible layer; 15. a heat resistant constraining layer; 16. and sealing the welding line.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
Example 1
In the traditional sintering cooler, a fiberboard with certain strength is adopted for sealing between a cooling bed trolley and a smoke hood, one side of the fiberboard is fixed on the smoke hood, and the sealing is realized by utilizing the dynamic friction between the fiberboard and the top end of the cooling bed trolley, but the sealing effect of the linear sealing mode is relatively poor, and due to the fact that the environmental temperature difference between the two sides of the fiberboard is large, the strength of the fiberboard is reduced after periodic thermal expansion and cold contraction, the pressure of the deformed fiberboard on the top end of the cooling bed trolley is reduced, the gap between the fiberboard and the cooling bed trolley is larger and larger, and the air leakage rate is gradually increased; moreover, due to the abrasion of the rails, dislocation occurs between the adjacent cooling bed trolleys on the rails, and the dislocation can cause the damage and even the falling of the fiber plates caused by the scraping and the collision of the cooling bed trolleys and the fiber plates in the moving process, so that the air leakage rate is greatly increased. The main following problem that utilizes the fibreboard to seal between cold bed platform truck and the petticoat pipe promptly among the prior art: the sealing is realized by the pressure of the fiber board on the top end of the cooling bed trolley, and when the deformation degree of the fiber board is larger, the air leakage rate is increased; the sintering cooler of the present embodiment can avoid the above problems skillfully.
Referring to fig. 1 to 4, the sintering cooler of the present embodiment includes: the device comprises a multi-section cooling trolley 4 for loading sinter, a plurality of smoke hoods 3 positioned on the multi-section cooling trolley 4 and a dynamic sealing device for sealing gaps between the cooling trolley 4 and the smoke hoods 3. Wherein, the upper end of the dynamic sealing device is fixed on the side surface of the smoke hood 3, and the lower end is hung downwards and pressed on the cooling trolley 4 under the action of gravity.
In the embodiment, the upper end of the dynamic sealing device is fixed on the side surface of the smoke hood 3, and the lower end of the dynamic sealing device is hung downwards and pressed on the cooling trolley 4 under the action of gravity, so that dynamic sealing is realized between the cooling trolley 4 and the smoke hood 3, and the problem of air leakage caused by large deformation degree of a fiber board in the prior art is solved; specifically, in the present embodiment, the dynamic sealing device is pressed on the cooling trolley 4 under the action of gravity, rather than being pressed on the cooling trolley 4 by the elasticity of the dynamic sealing device itself like a fiberboard, so that the dynamic sealing device can still be tightly pressed on the cooling trolley 4 after periodic thermal expansion and cold contraction, and the sealing effect between the cooling trolley 4 and the smoke hood 3 is greatly improved.
Example 2
Referring to fig. 1 to 4, the structure of the sintering cooler of the present embodiment is substantially the same as that of embodiment 1, and further:
wherein, dynamic seal device includes: the upper end of the heat-resistant sealing layer 12 is fixed on the side surface of the smoke hood 3, and the lower end of the heat-resistant sealing layer 12 is connected with a counterweight 8.
In this embodiment, the heat-resistant sealing layer 12 can perform a good sealing function and can withstand a high environmental temperature during operation; the counterweight 8 is connected to the lower end of the heat-resistant sealing layer 12, so that the lower end of the heat-resistant sealing layer 12 is pressed on the cooling trolley 4 under the action of gravity of the counterweight 8, and the effect of pressing and sealing is achieved.
Example 3
Referring to fig. 1 to 4, the structure of the sinter cooler of the present embodiment is substantially the same as that of embodiment 2, and further:
the heat-resistant sealing layer 12 is made of flexible materials; the cooling cart 4 is provided at an upper portion thereof with an inclined plate 13 inclined downward, and a lower end of the heat-resistant seal layer 12 is pressed against a surface of the inclined plate 13 by the gravity of the weight 8.
In this embodiment, the upper part of the cooling platform truck 4 is provided with a downward inclined plate 13, and the lower end of the heat-resistant sealing layer 12 is pressed against the surface of the inclined plate 13 by the gravity of the counterweight 8, wherein the downward inclined plate 13 may be provided on the inner side of the upper part of the cooling platform truck 4 or on the outer side of the upper part of the cooling platform truck 4, and sealing can be achieved as long as the lower end of the heat-resistant sealing layer 12 is pressed against the outer surface of the inclined plate 13 by the gravity of the counterweight 8; specifically, in this embodiment, the inclined plate 13 inclined downward is provided outside the upper portion of the cooling cart 4.
In the present embodiment, the inclined plate 13 is used to form a contact seal with the lower end of the heat-resistant seal layer 12, wherein the inclined arrangement of the inclined plate 13, on the one hand, lifts up the lower end of the heat-resistant seal layer 12 so that the gravity of the counterweight 8 has a component force in a direction perpendicular to the surface of the inclined plate 13, thereby enabling the lower end of the heat-resistant seal layer 12 to be pressed against the surface of the inclined plate 13; on the other hand has increased the area of contact between heat-resisting sealing layer 12 lower extreme and the hang plate 13 surface, and heat-resisting sealing layer 12 adopts flexible material to make for form face seal between heat-resisting sealing layer 12 lower extreme and the hang plate 13, promoted heat-resisting sealing layer 12's sealed effect greatly, thereby increase substantially hot-blast temperature, and then improve exhaust-heat boiler power generation's efficiency, energy-conserving potentiality is great. (in the prior art, the fiberboard is made of non-flexible material, the fiberboard utilizes the elasticity of the fiberboard to seal the space between the cooling bed trolley and the smoke hood, the contact point of the fiberboard and the top end of the cooling bed trolley is the stress point, the connection line of the stress points forms line sealing, the sealing effect and the opposite surface sealing are relatively poor.)
In the present embodiment, the dynamic seal device exhibits a dynamic seal effect, and in actual use, the lower end of the heat-resistant seal layer 12 is kept in relative sliding contact with the surface of the inclined plate 13 and is always in close surface contact with the surface of the inclined plate 13, thereby achieving a good dynamic seal effect.
Example 4
Referring to fig. 1 to 4, the structure of the sinter cooler of the present embodiment is substantially the same as that of embodiment 3, and further:
the heat-resistant sealing layer 12 is arranged along the length direction of the smoke hood 3, two sides of the lower end of the heat-resistant sealing layer 12 are respectively provided with a guide plate 7, and an included angle is kept between the guide plates 7 and the surface of the inclined plate 13.
Because the track is worn, dislocation easily appears between adjacent cooling platform trucks 4 on the track, in order to avoid the adverse effect that the dislocation brought, be equipped with a deflector 7 respectively in the both sides of heat-resisting sealing layer 12 lower extreme in this embodiment, and deflector 7 and hang plate 13 surface keep the contained angle, deflector 7 can play the guide effect to the relative motion between heat-resisting sealing layer 12 lower extreme and the hang plate 13, avoid heat-resisting sealing layer 12 to be scraped by staggered cooling platform truck 4 top, ensure that heat-resisting sealing layer 12 lower extreme and hang plate 13 surface realize good face seal all the time, avoid leaking out.
Example 5
Referring to fig. 1 to 4, the structure of the sintering cooler of the present embodiment is substantially the same as that of embodiment 4, and further:
the heat-resistant sealing layer 12 comprises at least one layer of high-temperature-resistant cloth, and the counterweight 8 is fixed on the surface of the high-temperature-resistant cloth or in the interlayer of the high-temperature-resistant cloth.
In this embodiment, the heat-resistant sealing layer 12 may include multiple layers of high-temperature-resistant cloth (3 to 8 layers are recommended), the positions of the thinner cloth and the thicker cloth are reasonably allocated according to the heat-resistant and wear-resistant characteristics of the high-temperature-resistant cloth, and the thickness of the single-layer high-temperature-resistant cloth is controlled to be 0.1mm to 0.4 mm. The counterweight 8 can be sewn on the surface of the high-temperature-resistant cloth or fixed in the interlayer of the high-temperature-resistant cloth through metal wires, and the lower end of the heat-resistant sealing layer 12 is in surface sealing with the surface of the inclined plate 13, and the heat-resistant sealing layer 12 comprises multiple layers of high-temperature-resistant cloth, so that the counterweight is not easily abraded and has long service life.
Example 6
Referring to fig. 1 to 4, the structure of the sintering cooler of the present embodiment is substantially the same as that of embodiment 5, and further:
in this embodiment, the counterweight 8 is placed in the interlayer of the outermost layer of the high temperature resistant cloth, so that the multiple layers of the high temperature resistant cloth are pressed on the surface of the inclined plate 13 by the gravity of the counterweight 8; and the counterweight 8 is wrapped by a heat-resistant flexible layer 14 and a heat-resistant binding layer 15 from inside to outside in sequence.
It should be noted that, in this embodiment, the heat-resistant flexible layer 14 and the heat-resistant binding layer 15 respectively play different roles, wherein the heat-resistant flexible layer 14 is made of a heat-resistant and flexible material and is used for directly wrapping the counterweight 8, and by wrapping the heat-resistant flexible layer 14, the surface area of the outer side of the counterweight 8 is significantly enlarged, the effective contact area between the lower end of the heat-resistant sealing layer 12 and the inclined plate 13 is greatly increased, so as to improve the surface sealing effect. The heat-resistant binding layer 15 is made of heat-resistant material and mainly plays a role in fixing the heat-resistant flexible layer 14 on the outer side.
Example 7
Referring to fig. 1 to 4, the structure of the sinter cooler of the present embodiment is substantially the same as that of embodiment 6, and further:
the two sides of the outermost layer of high-temperature-resistant cloth for placing the counterweight 8 along the length direction are respectively provided with a baffle 6, and bolts sequentially penetrate through the baffle 6 and the outermost layer of high-temperature-resistant cloth, so that the interlayers of the outermost layer of high-temperature-resistant cloth along the two sides of the length direction are clamped; the installation of the baffle 6 is used for limiting the transverse movement of the counterweight 8 in the interlayer at the two sides of the outermost layer of the high-temperature-resistant cloth and ensuring that the counterweight 8 does not slide out from the two sides of the outermost layer of the high-temperature-resistant cloth.
In this embodiment, a pressing plate 5 extending in the length direction is installed in the middle of the outermost layer of the high temperature resistant cloth, and the multiple layers of the high temperature resistant cloth can be pressed on the surface of the inclined plate 13 in the whole length direction. Two ends of the pressing plate 5 in the width direction are respectively provided with an outward arc-shaped flanging, and a bolt sequentially penetrates through the pressing plate 5 and the outermost layer of high-temperature-resistant cloth, so that an interlayer in the middle of the outermost layer of high-temperature-resistant cloth is clamped (through the matching of the bolt and a nut), and thus the longitudinal movement of the counterweight 8 is prevented, and meanwhile, the counterweight 8 can be effectively pressed on the surface of the inclined plate 13; the both ends of housing washer 5 edge width direction are equipped with outside arc turn-ups respectively, not only can prevent that housing washer 5 from scraping high temperature resistant cloth, and make outermost high temperature resistant cloth more closely compressed tightly on hang plate 13.
Example 8
Referring to fig. 1 to 4, the structure of the sinter cooler of the present embodiment is substantially the same as that of embodiment 7, and further:
in this embodiment, the heat-resistant sealing layer 12 includes bottom high temperature resistant cloth 9, middle layer high temperature resistant cloth 10 and outer high temperature resistant cloth 11 from inside to outside in proper order, and the weight 8 is placed in the intermediate layer of outer high temperature resistant cloth 11, and the wearing and tearing of outer high temperature resistant cloth 11 can be avoided to bottom high temperature resistant cloth 9, middle layer high temperature resistant cloth 10, and the design of three-layer high temperature resistant cloth has improved the sealed effect of heat-resistant sealing layer 12.
In this embodiment, the counterweight 8 is an iron chain or other counterweight units adopting flexible connection, so that on one hand, the counterweight 8 is conveniently placed in the interlayer of the outer-layer high-temperature-resistant cloth 11, and on the other hand, the counterweight 8 is conveniently wrapped by the heat-resistant flexible layer 14, thereby better realizing surface sealing between the lower end of the heat-resistant sealing layer 12 and the surface of the inclined plate 13.
When the included angle between the inclined plate 13 and the horizontal plane is too small, the pressure between the counterweight 8 and the surface of the inclined plate 13 is too small, which is not beneficial to the sealing effect of the surface sealing, and when the included angle between the inclined plate 13 and the horizontal plane is too large, and the lower end of the heat-resistant sealing layer 12 keeps relative motion with the inclined plate 13, the heat-resistant sealing layer 12 is easy to wrinkle, and the sealing effect of the surface sealing is also reduced; in this embodiment, the included angle between the inclined plate 13 and the horizontal plane is designed to be 15 to 75 degrees, which effectively avoids the above problems, and in this embodiment, the included angle between the inclined plate 13 and the horizontal plane is 15 degrees.
In this embodiment, the heat-resistant flexible layer 14 is heat-insulating cotton and/or ceramic fiber cloth, and the heat-resistant binding layer 15 is metal foil paper and/or metal foil tape. In the specific embodiment, the outer side of the counterweight 8 is wrapped by a layer of heat-insulating cotton, glue is coated on the outer side of the heat-insulating cotton firstly, then a layer of metal foil paper is wrapped on the outer side of the heat-insulating cotton, and in order to prevent the glue from being heated to lose efficacy, the outer side of the metal foil paper is wound and fastened through metal foil belts distributed at equal intervals.
Example 9
Referring to fig. 1 to 4, the structure of the sintering cooler of the present embodiment is substantially the same as that of embodiment 8, and further:
in this embodiment, the upper end of the heat-resistant sealing layer 12 is clamped and fixed between an inner angle steel 1 and an outer angle steel 2, and the outer surface of the bent part of the inner angle steel 1 is hermetically welded on the side surface of the smoke hood 3, wherein the sealed welding part of the outer surface of the bent part of the inner angle steel 1 is a sealing welding line 16, the sealing welding line 16 is a stressed fulcrum at which the inner angle steel 1 is fixed on the side surface of the smoke hood 3, and is also a sealed part between the inner angle steel 1 and the side surface of the smoke hood 3, so that the hot air can. In this embodiment, the air leakage rate at the position of the sealing weld line 16 is controlled to be below 0.1% through an engineering pressure resistance test.
The sintering cooler of the embodiment is developed aiming at the problems that the existing cooling trolley 4 is not well sealed with the upper smoke hood 3 in the movement process, hot air leaks outwards, cold air is sucked and the like, a heat-resistant sealing layer 12 is arranged between the cooling trolley 4 and the smoke hood 3, the heat-resistant sealing layer 12 is made of flexible materials, the lower end of the heat-resistant sealing layer 12 is in close surface contact with an inclined plate 13 through a counterweight 8, good dynamic sealing between the smoke hood 3 and the cooling trolley 4 is realized, the air leakage rate is reduced to be below 20% from the original 50%, the power generation capacity of a boiler is improved by about 10%, and the return period is below half a year. It should be noted that the dynamic seal device in the present embodiment is not only suitable for dynamic seal engagement between the cooling trolley 4 and the smoke hood 3 in the sintering cooler, but also suitable for dynamic seal engagement between similar dynamic and static objects.
In the existing practical production process, a material with high temperature resistance, good wear resistance and good lubricity is difficult to find to replace a fiberboard, so that although the sealing mode of the fiberboard has some problems, a person skilled in the art is difficult to have an incentive to research the sealing problem at the position. The sintering cooler of the embodiment can be provided with a simple and effective dynamic sealing device in a short time only according to the general maintenance requirements of the sintering cooler, and is suitable for popularization and application.
Example 10
The sinter cooler of this example has substantially the same structure as that of example 9, except that:
the fixing manner of the heat-resistant sealing layer 12 in this embodiment is different from that in embodiment 8, in this embodiment, an asbestos plate is screwed to the side face of the hood 3 and the upper end of the heat-resistant sealing layer 12 is clamped and fixed between the asbestos plate and the hood 3, so that the upper end of the heat-resistant sealing layer 12 can be conveniently fixed on the hood 3.
Example 11
The sinter cooler of this example has substantially the same structure as that of example 9, except that: in this embodiment, the inclined plate 13 forms an angle of 75 ° with the horizontal plane.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (3)
1. A sinter cooler comprising:
a multi-section cooling trolley (4) for loading sintered ore;
a plurality of smoke hoods (3) positioned above the plurality of sections of cooling trolleys (4);
the method is characterized in that: a dynamic sealing device for sealing a gap between the cooling trolley (4) and the smoke hood (3);
the upper end of the dynamic sealing device is fixed on the side surface of the smoke hood (3), and the lower end of the dynamic sealing device is hung downwards and pressed on the cooling trolley (4) under the action of gravity;
the dynamic sealing device comprises a heat-resistant sealing layer (12) of which the upper end is fixed on the side surface of the smoke hood (3);
and a counterweight (8), wherein the counterweight (8) is connected to the lower end of the heat-resistant sealing layer (12);
the heat-resistant sealing layer (12) is made of flexible materials;
an inclined plate (13) inclined downwards is arranged at the upper part of the cooling trolley (4), and the lower end of the heat-resistant sealing layer (12) is pressed on the surface of the inclined plate (13) under the action of the gravity of a counterweight (8);
the heat-resistant sealing layer (12) is arranged along the length direction of the smoke hood (3), two sides of the lower end of the heat-resistant sealing layer (12) are respectively provided with a guide plate (7), and an included angle is kept between the guide plates (7) and the surface of the inclined plate (13);
the heat-resistant sealing layer (12) comprises at least one layer of high-temperature-resistant cloth, and the counterweight (8) is fixed on the surface of the high-temperature-resistant cloth or in the interlayer of the high-temperature-resistant cloth;
the counterweight (8) is placed in the interlayer of the outermost layer of the high-temperature-resistant cloth, and the counterweight (8) is sequentially wrapped by the heat-resistant flexible layer (14) and the heat-resistant binding layer (15) from inside to outside;
the two sides of the outermost layer of high-temperature-resistant cloth for placing the counterweight (8) along the length direction are respectively provided with a baffle (6), and bolts sequentially penetrate through the baffle (6) and the outermost layer of high-temperature-resistant cloth, so that the interlayers of the outermost layer of high-temperature-resistant cloth along the two sides of the length direction are clamped;
the middle part of the outermost layer of high-temperature-resistant cloth is provided with a pressing plate (5) extending along the length direction, two ends of the pressing plate (5) along the width direction are respectively provided with an outward arc-shaped flanging, and a bolt sequentially penetrates through the pressing plate (5) and the outermost layer of high-temperature-resistant cloth, so that an interlayer in the middle part of the outermost layer of high-temperature-resistant cloth is clamped;
the heat-resistant sealing layer (12) sequentially comprises bottom-layer high-temperature-resistant cloth (9), middle-layer high-temperature-resistant cloth (10) and outermost-layer high-temperature-resistant cloth (11) from inside to outside;
the counterweight (8) is an iron chain;
the included angle between the inclined plate (13) and the horizontal plane is 15-75 degrees;
the heat-resistant flexible layer (14) is heat-preservation cotton and/or ceramic fiber cloth, and the heat-resistant binding layer (15) is metal foil paper and/or a metal foil belt.
2. The sinter cooler of claim 1, wherein:
the upper end of the heat-resistant sealing layer (12) is clamped and fixed between an inner angle steel (1) and an outer angle steel (2), and the outer surface of the bent part of the inner angle steel (1) is welded on the side surface of the smoke hood (3) in a sealing mode.
3. The sinter cooler of claim 1, wherein:
an asbestos plate is in threaded connection with the side face of the smoke hood (3) and the upper end of the heat-resisting sealing layer (12) is clamped and fixed between the asbestos plate and the smoke hood (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811521484.9A CN109612281B (en) | 2016-11-29 | 2016-11-29 | Sintering cooling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811521484.9A CN109612281B (en) | 2016-11-29 | 2016-11-29 | Sintering cooling machine |
| CN201611070048.5A CN106403621B (en) | 2016-11-29 | 2016-11-29 | A kind of sinter cooler and its dynamic sealing equipment |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611070048.5A Division CN106403621B (en) | 2016-11-29 | 2016-11-29 | A kind of sinter cooler and its dynamic sealing equipment |
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| CN109612281A CN109612281A (en) | 2019-04-12 |
| CN109612281B true CN109612281B (en) | 2020-07-07 |
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| CN201811521484.9A Active CN109612281B (en) | 2016-11-29 | 2016-11-29 | Sintering cooling machine |
| CN201611070048.5A Active CN106403621B (en) | 2016-11-29 | 2016-11-29 | A kind of sinter cooler and its dynamic sealing equipment |
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| CN201611070048.5A Active CN106403621B (en) | 2016-11-29 | 2016-11-29 | A kind of sinter cooler and its dynamic sealing equipment |
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Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10048845A1 (en) * | 2000-10-02 | 2002-04-18 | Eisenmann Kg Maschbau | Seal for a continuous furnace, bogie hearth furnace or the like. |
| CN101368794B (en) * | 2007-08-17 | 2010-11-17 | 北京得能创新科技有限公司 | Sintering device, sintering cooler and its suspension sealing device |
| CN101368793B (en) * | 2007-08-17 | 2010-12-29 | 北京得能创新科技有限公司 | Sintering device, sintering cooler and its flexible sealing device |
| DE102009048722A1 (en) * | 2009-10-08 | 2011-04-21 | Outotec Oyj | sinter cooler |
| CN201828145U (en) * | 2010-10-21 | 2011-05-11 | 中冶赛迪工程技术股份有限公司 | Sealing device for end part of cold machine smoke hood of sintered ring |
| CN201876123U (en) * | 2010-11-25 | 2011-06-22 | 中冶赛迪工程技术股份有限公司 | Device for reducing air leakage rate between sintering annular cooling machine table and smoke hood |
| CN201954964U (en) * | 2010-12-24 | 2011-08-31 | 孙慕文 | Sealing device for trolley of sintering annular cooler |
| CN202182646U (en) * | 2011-07-29 | 2012-04-04 | 浙江西子联合工程有限公司 | Flexible sealing device for upper gas hood of ring cooling machine |
| CN203053241U (en) * | 2013-02-04 | 2013-07-10 | 河北钢铁股份有限公司邯郸分公司 | Sealing device of waste heat recovery trolley of annular cooler |
| CN204043414U (en) * | 2014-09-01 | 2014-12-24 | 河北钢铁股份有限公司邯郸分公司 | A kind of ring cold machine smoke hood sealing device |
| CN204555713U (en) * | 2015-04-20 | 2015-08-12 | 中冶北方（大连）工程技术有限公司 | A kind of sealing device on central cooler |
| CN205642027U (en) * | 2016-05-18 | 2016-10-12 | 河北钢铁股份有限公司承德分公司 | Sealing device of circular cooler |
| CN205664687U (en) * | 2016-06-08 | 2016-10-26 | 唐山港陆钢铁有限公司 | Cold board car sealing device of sintering cogeneration ring |
| CN206222948U (en) * | 2016-11-29 | 2017-06-06 | 安徽工业大学 | A kind of sinter cooler and its dynamic sealing equipment |
-
2016
- 2016-11-29 CN CN201811521484.9A patent/CN109612281B/en active Active
- 2016-11-29 CN CN201611070048.5A patent/CN106403621B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106403621A (en) | 2017-02-15 |
| CN109612281A (en) | 2019-04-12 |
| CN106403621B (en) | 2018-12-14 |
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