CN109612281B - Sintering cooling machine - Google Patents

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

A sintering cooler

The patent application of the present invention is for the divisional application with the application number: 2016110700485, the application date of the original application is: 2016-11-29, and the name of the invention is: a sintering cooling machine and its dynamic sealing equipment.

technical field

The invention belongs to the field of sintering equipment in the iron and steel metallurgy industry, and more particularly relates to a sintering cooler.

Background technique

In iron and steel production, sintering production is one of the important processes, which provides high-quality raw materials for blast furnace ironmaking. After the sintering is completed, when the cooling bed trolley carries the hot sintered clinker and moves directionally on the track, the bellows blows upward at the bottom of the cooling bed trolley, and the cold air passes through the sintered material layer to cool the sintered material, which is heated and sent through the hood. In this way, the sensible heat in the sintered material layer is recovered and the energy utilization efficiency is improved. In order to increase the temperature of the hot air as much as possible, it must be ensured that there is a reliable seal between the cooling bed trolley and the fume hood in the sintering cooler, that is, no air leakage or as little air leakage as possible. Reducing the air leakage of the sintering cooler is the key and difficult point of sintering design and production maintenance. Due to the gap between the top of the cooling bed trolley of the sintering cooler and the bottom of the hood, the air leakage is serious, sometimes even more than 50%, which not only reduces the power generation of the waste heat boiler It increases the power consumption of the blower, causes noise pollution, and limits the improvement of sintering production efficiency and affects product quality.

In the traditional sintering cooler, the sealing between the cooling bed trolley and the hood is made of fiberboard with a certain strength, and one side of the fiberboard is fixed on the hood, and the dynamic friction between the fiberboard and the top of the cooling bed trolley is used to To achieve sealing, but the sealing effect of this line sealing method is relatively poor, and due to the large ambient temperature difference between the two sides of the fiberboard, the strength of the fiberboard itself is attenuated after periodic thermal expansion and contraction, and the deformed fiberboard exerts pressure on the top of the cooling bed trolley. The gap between the two becomes larger and larger, and the air leakage rate gradually increases; in addition, due to the wear of the track, dislocation is easy to occur between the adjacent cooling bed trolleys on the track, and this dislocation will make the cooling bed table During the movement of the car, the fiberboard is damaged or even falls off due to the collision with the fiberboard, resulting in a substantial increase in the air leakage rate.

Regarding the sealing device used in the sintering cooling machine, there are relevant patents disclosed in the prior art, such as the patent publication number: CN 101368794 A, the publication date: February 18, 2009, the invention and creation name are: sintering machine, sintering cooling machine and its suspension sealing device, the application discloses a sintering cooler and its suspension type sealing device that reduce the power consumption of the fan, reduce the air leakage of the equipment, improve the efficiency of waste heat recovery, and improve the environment; the sintering cooler of the application includes: A multi-section trolley for loading sinter; several elevated smoke hoods located above the multi-section trolley; a bellows located under each trolley, the slideway of the bellows sliding in contact with the elastic sliding plate of the corresponding trolley; A suspended sealing device between every two adjacent fume hoods on a multi-section trolley; wherein the upper end of the suspended sealing device is suspended at the joint of two adjacent fume hoods, and the lower end is suspended on the trolley loaded on the sinter. However, the shortcomings of this application are: (1) The sealing part of the suspended sealing method is the joint part of two adjacent hoods. In order to prevent the static sealing of lateral wind blowing, it only serves to statically isolate two adjacent hoods. The function of the fume hood cannot be applied to the dynamic seal between the cooling bed trolley and the fume hood; (2) the flexible sealing method relies on the action of wind pressure to seal, and leakage is prone to occur when the wind pressure fluctuates greatly. , the sealing stability is not high.

To sum up, how to improve the sealing effect between the cooling bed trolley and the fume hood is a technical problem that needs to be solved urgently in the prior art.

SUMMARY OF THE INVENTION

1. The technical problem to be solved by the invention

The purpose of the present invention is to overcome the shortage of poor sealing effect between the cooling bed trolley and the fume hood in the prior art, and to provide a sintering cooler that improves the sealing effect between the cooling bed trolley and the fume hood.

2. Technical solutions

In order to achieve the above object, the technical scheme provided by the invention is:

The sintering cooler of the present invention includes:

Multi-section cooling trolley for loading sinter;

a plurality of fume hoods located above the multi-section cooling trolley;

Also includes:

A dynamic sealing device for sealing the gap between the cooling trolley and the fume hood;

Wherein, the upper end of the dynamic sealing device is fixed on the side surface of the fume hood, and the lower end hangs downward and is pressed on the cooling trolley under the action of gravity.

As a further improvement of the sintering cooler of the present invention, the dynamic sealing device includes:

a heat-resistant sealing layer whose upper end is fixed on the side of the fume hood;

A weight is connected to the lower end of the heat-resistant sealing layer.

As a further improvement of the sintering cooler of the present invention, the heat-resistant sealing layer is made of flexible materials;

The upper part of the cooling trolley is provided with an inclined plate inclined downward, and the lower end of the heat-resistant sealing layer is pressed against the surface of the inclined plate under the action of gravity of the counterweight.

As a further improvement of the sintering cooler of the present invention, the heat-resistant sealing layer is arranged along the length direction of the fume hood, and two sides of the lower end of the heat-resistant sealing layer are respectively provided with a guide plate, the guide plate and the The inclined plate surface maintains the 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 of the present invention, the counterweight is placed in the interlayer of the outermost high temperature resistant cloth, and the counterweight is sequentially covered by the heat-resistant flexible layer and the heat-resistant binding layer from the inside to the outside. pack.

As a further improvement of the sintering cooler of the present invention, a baffle plate is installed on both sides along the length direction of the outermost high temperature resistant cloth on which the counterweight is placed, and the bolts pass through the baffle plate and the outermost high temperature resistant cloth in turn, so that the The interlayers on both sides of the outermost high temperature resistant cloth along the length direction are clamped;

A compression plate extending in the length direction is installed in the middle of the outermost layer of high temperature resistant cloth. Both ends of the compression plate in the width direction are respectively provided with outward arc flanges, and the bolts pass through the compression plate and the outermost layer in turn. High temperature resistant cloth, so that the interlayer in the middle of the outermost high temperature resistant cloth is clamped.

As a further improvement of the sintering cooler of the present invention, the heat-resistant sealing layer sequentially includes a bottom high-temperature resistant cloth, a middle layer of high-temperature resistant cloth, and an outer layer of high-temperature resistant cloth from the inside to the outside. In the interlayer of high temperature cloth;

The counterweight is an iron chain or other counterweight units with flexible connection;

The angle between the inclined plate and the horizontal plane is 15-75°;

The heat-resistant flexible layer is thermal insulation cotton and/or ceramic fiber cloth, and the heat-resistant binding layer is metal foil paper and/or metal foil tape.

As a further improvement of the sintering cooler of the present 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 inner angle steel is sealed and welded on the bending part of the inner angle steel. the sides of the hood;

Or an asbestos plate is screwed on the side of the fume hood and the upper end of the heat-resistant sealing layer is clamped and fixed between the asbestos plate and the fume hood.

The dynamic sealing equipment for sintering cooler of the present invention includes:

A dynamic sealing device for sealing the gap between the cooling trolley and the hood of the sinter cooler;

Wherein, the upper end of the dynamic sealing device is fixed on the side surface of the fume hood, and the lower end hangs downward and is pressed on the cooling trolley under the action of gravity.

As a further improvement of the dynamic sealing device of the present invention, the dynamic sealing device includes:

a heat-resistant sealing layer whose upper end is fixed on the side of the fume hood;

A weight is connected to the lower end of the heat-resistant sealing layer.

As a further improvement of the dynamic sealing device of the present 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 inclined downward, and the lower end of the heat-resistant sealing layer is pressed against the surface of the inclined plate under the action of gravity of the counterweight.

As a further improvement of the dynamic sealing device of the present invention, the heat-resistant sealing layer is arranged along the length direction of the fume hood, and two sides of the lower end of the heat-resistant sealing layer are respectively provided with a guide plate, the guide plate and the The inclined plate surface maintains the included angle.

As a further improvement of the dynamic sealing device 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 dynamic sealing device of the present invention, the counterweight is placed in the interlayer of the outermost high temperature resistant cloth, and the counterweight is sequentially covered by the heat-resistant flexible layer and the heat-resistant binding layer from the inside to the outside. pack.

As a further improvement of the dynamic sealing device of the present invention, a baffle plate is installed on both sides of the outermost high temperature resistant cloth along the length direction on which the counterweight is placed, and the bolts pass through the baffle plate and the outermost high temperature resistant cloth in turn, so that the The interlayers on both sides of the outermost high temperature resistant cloth along the length direction are clamped;

A compression plate extending in the length direction is installed in the middle of the outermost layer of high temperature resistant cloth. Both ends of the compression plate in the width direction are respectively provided with outward arc flanges, and the bolts pass through the compression plate and the outermost layer in turn. High temperature resistant cloth, so that the interlayer in the middle of the outermost high temperature resistant cloth is clamped.

As a further improvement of the dynamic sealing device of the present invention, the heat-resistant sealing layer sequentially includes a bottom high-temperature resistant cloth, a middle layer of high-temperature resistant cloth and an outer high-temperature resistant cloth from the inside to the outside. In the interlayer of high temperature cloth;

The counterweight is an iron chain or other counterweight units with flexible connection;

The angle between the inclined plate and the horizontal plane is 15-75°;

The heat-resistant flexible layer is thermal insulation cotton and/or ceramic fiber cloth, and the heat-resistant binding layer is metal foil paper and/or metal foil tape.

As a further improvement of the dynamic sealing device of the present 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 bending part of the inner angle steel is sealed and welded on the inner angle steel. the sides of the hood;

Or an asbestos plate is screwed on the side of the fume hood and the upper end of the heat-resistant sealing layer is clamped and fixed between the asbestos plate and the fume hood.

3. Beneficial effects

Adopting the technical scheme provided by the present invention, compared with the prior art, has the following remarkable effects:

(1) The sintering cooler of the present invention is developed for the problem that the existing cooling trolley is not well sealed with the upper fume hood during the movement process, and there are problems such as hot air leakage and cold air sucking. A heat-resistant sealing layer is arranged between the car and the fume hood. The heat-resistant sealing layer is made of flexible materials. The lower end of the heat-resistant sealing layer is in close contact with the inclined plate through the counterweight, so as to realize the connection between the fume hood and the cooling trolley. The good dynamic seal between the two, the air leakage rate is greatly reduced, and the power generation of the boiler is significantly improved.

(2) In the existing actual production process, it is difficult to find a material with high temperature resistance, good wear resistance and good lubricity to replace the fiberboard. Therefore, although there are some problems in the method of using the fiberboard sealing, those of ordinary skill in the art are also very There is little incentive to study the sealing problem at this location. The sintering cooler of the present invention only needs to follow the general maintenance requirements of the sintering cooler, and a simple and effective dynamic sealing device can be installed and deployed in a short time, which is suitable for popularization and use.

Description of drawings

Fig. 1 is the structural representation of the sintering cooler of Example 1;

Fig. 2 is A-A sectional structure schematic diagram in Fig. 1;

Fig. 3 is a partial enlarged view of part I in Fig. 1;

FIG. 4 is a partial enlarged view of part II in FIG. 2 .

Description of the labels in the diagram:

1. Inner angle steel; 2. Outer angle steel; 3. Fume hood; 4. Cooling trolley; 5. Pressing plate; 6. Baffle plate; 7. Guide plate; 8. Counterweight; 9. Bottom high temperature resistant cloth; 10. High temperature resistant fabric in the middle layer; 11. High temperature resistant fabric on the outer layer; 12. Heat-resistant sealing layer; 13. Inclined plate; 14. Heat-resistant flexible layer;

Detailed ways

In order to make the purposes, 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 accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to further understand the content of the present invention, the present invention will be described in detail with reference to the accompanying drawings and embodiments.

Example 1

In the traditional sintering cooler, the sealing between the cooling bed trolley and the hood is made of fiberboard with a certain strength, and one side of the fiberboard is fixed on the hood, and the dynamic friction between the fiberboard and the top of the cooling bed trolley is used to To achieve sealing, but the sealing effect of this line sealing method is relatively poor, and due to the large ambient temperature difference between the two sides of the fiberboard, the strength of the fiberboard itself is attenuated after periodic thermal expansion and contraction, and the deformed fiberboard exerts pressure on the top of the cooling bed trolley. The gap between the two becomes larger and larger, and the air leakage rate gradually increases; in addition, due to the wear of the track, there is a dislocation between the adjacent cooling bed trolleys on the track, and this dislocation will make the cooling bed trolley Scratching with the fiberboard during the movement will cause the fiberboard to be damaged or even fall off, resulting in a substantial increase in the air leakage rate. That is, in the prior art, the use of fiberboard to seal between the cooling bed trolley and the fume hood mainly has the following problems: the sealing is realized by the pressure of the fiberboard on the top of the cooling bed trolley. When the fiberboard itself is deformed to a large degree, it will cause The air leakage rate increases; and the sintering cooler of this embodiment can cleverly avoid the above problems.

1 to 4 , the sinter cooling machine of this embodiment includes: a multi-section cooling trolley 4 for loading sinter, several hoods 3 located on the multi-section cooling trolley 4 and a cooling trolley 4 for sealing A dynamic sealing device for the gap between the hood and the hood 3. The upper end of the dynamic sealing device is fixed on the side of the fume hood 3 , and the lower end is suspended downward and pressed on the cooling trolley 4 under the action of gravity.

In this embodiment, the upper end of the dynamic sealing device is fixed on the side of the fume hood 3 , and the lower end hangs downward and is pressed on the cooling trolley 4 under the action of gravity, so that dynamic sealing is realized between the cooling trolley 4 and the fume hood 3 , which avoids the air leakage problem caused by the large degree of deformation of the fiberboard in the prior art; specifically, in this embodiment, the dynamic sealing device is pressed on the cooling trolley 4 under the action of gravity, instead of relying on the same fiberboard. Its own elastic force is pressed on the cooling trolley 4, so it is ensured that the dynamic sealing device can still be tightly pressed on the cooling trolley 4 after periodic thermal expansion and contraction, which greatly improves the cooling bed trolley 4 and smoke. The sealing effect between the hoods 3.

Example 2

1 to 4, the structure of the sintering cooler of this embodiment is basically the same as that of Embodiment 1, and further:

The dynamic sealing device includes: a heat-resistant sealing layer 12 whose upper end is fixed on the side surface of the fume 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 high ambient temperature during operation; the counterweight 8 is connected to the lower end of the heat-resistant sealing layer 12, so that the heat-resistant sealing layer 12 is The lower end is pressed against the cooling trolley 4 under the gravity of the counterweight 8 to achieve a pressing and sealing effect.

Example 3

Referring to Figures 1 to 4, the structure of the sintering cooler of this embodiment is basically the same as that of Embodiment 2, and further:

The heat-resistant sealing layer 12 is made of flexible material; the upper part of the cooling trolley 4 is provided with an inclined plate 13 inclined downward, and the lower end of the heat-resistant sealing layer 12 is pressed against the surface of the inclined plate 13 under the gravity of the counterweight 8 .

In this embodiment, the upper part of the cooling trolley 4 is provided with an inclined plate 13 inclined downward, 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 inclined plate 13 is inclined downward. The inclined plate 13 can be arranged either on the inner side of the upper part of the cooling trolley 4 or on the outer side of the upper part of the cooling trolley 4, as long as the lower end of the heat-resistant sealing layer 12 is pressed against the inclined plate 13 by the gravity of the counterweight 8 The outer surface of the cooling trolley 4 can be sealed; in this embodiment, the inclined plate 13 inclined downward is arranged on the outer side of the upper part of the cooling trolley 4 .

In this embodiment, the inclined plate 13 is used to form a contact seal with the lower end of the heat-resistant sealing layer 12 , wherein the inclined setting of the inclined plate 13 lifts up the lower end of the heat-resistant sealing layer 12 on the one hand, so that the gravity of the counterweight 8 There is a component force in the direction perpendicular to the surface of the inclined plate 13, so that the lower end of the heat-resistant sealing layer 12 can be pressed against the surface of the inclined plate 13; on the other hand, the lower end of the heat-resistant sealing layer 12 and the surface of the inclined plate 13 are increased. and the heat-resistant sealing layer 12 is made of a flexible material, so that a surface seal is formed between the lower end of the heat-resistant sealing layer 12 and the inclined plate 13, which greatly improves the sealing effect of the heat-resistant sealing layer 12, thereby greatly improving the sealing effect of the heat-resistant sealing layer 12. Increasing the temperature of the hot air, thereby improving the power generation efficiency of the waste heat boiler, has a great potential for energy saving. (In the prior art, the fiberboard is made of non-flexible materials, and the fiberboard uses its own elastic force to seal the cooling bed trolley and the fume hood, and the contact point between the fiberboard and the top of the cooling bed trolley is the stress point. The connection of the points forms a line seal, and its sealing effect is relatively poor compared to the surface seal.)

It should be noted that the dynamic sealing device in this embodiment has a dynamic sealing effect. In actual use, the lower end of the heat-resistant sealing layer 12 keeps sliding relative to the surface of the inclined plate 13 and is always in close contact with the surface of the inclined plate 13 Surface contact to achieve a good dynamic sealing effect.

Example 4

Referring to Figures 1 to 4, the structure of the sintering cooler of this embodiment is basically the same as that of Embodiment 3, and further:

The heat-resistant sealing layer 12 is arranged along the length direction of the hood 3 , and a guide plate 7 is respectively provided on both sides of the lower end of the heat-resistant sealing layer 12 .

Due to the wear of the track, dislocation easily occurs between the adjacent cooling trolleys 4 on the track. In order to avoid the adverse effects caused by the dislocation, in this embodiment, a guide plate 7 is respectively provided on both sides of the lower end of the heat-resistant sealing layer 12, and the guide plates 7 are guided The plate 7 maintains an included angle with the surface of the inclined plate 13, and the guide plate 7 can guide the relative movement between the lower end of the heat-resistant sealing layer 12 and the inclined plate 13, so as to avoid the top of the cooling trolley 4 where the heat-resistant sealing layer 12 is staggered When scraped, ensure that the lower end of the heat-resistant sealing layer 12 and the surface of the inclined plate 13 always achieve a good surface seal to avoid air leakage.

Example 5

Referring to Figures 1 to 4, the structure of the sintering cooler of this embodiment is basically the same as that of Embodiment 4, and further:

The heat-resistant sealing layer 12 includes at least one layer of high-temperature resistant cloth, and the weight 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). According to the heat-resistant and wear-resistant characteristics of the high-temperature resistant cloth, the positions of the thinner cloth and the thicker cloth are reasonably allocated. The thickness of the layer of high temperature resistant cloth is controlled between 0.1mm and 0.4mm. The counterweight 8 can be sewn on the surface of the high temperature resistant cloth by metal wires or fixed in the interlayer of the high temperature resistant cloth. Since the lower end of the heat-resistant sealing layer 12 is surface-sealed with the surface of the inclined plate 13, and the heat-resistant sealing layer 12 includes many Layer of high temperature resistant cloth, which is not easy to be worn and has a long service life.

Example 6

1 to 4, the structure of the sintering cooler of this embodiment is basically the same as that of Embodiment 5, and further:

In this embodiment, the counterweight 8 is placed in the interlayer of the outermost high temperature resistant cloth, so that the multi-layer high temperature resistant cloth can be pressed against the surface of the inclined plate 13 by the gravity of the counterweight 8; and the counterweight The object 8 is sequentially wrapped by the heat-resistant flexible layer 14 and the heat-resistant binding layer 15 from the inside to the outside.

It should be noted that in this embodiment, the heat-resistant flexible layer 14 and the heat-resistant binding layer 15 play different roles respectively, wherein the heat-resistant flexible layer 14 is made of heat-resistant and flexible materials, and is used to directly wrap the counterweight 8 , through the wrapping of the heat-resistant flexible layer 14, the surface area of the outer side of the counterweight 8 is significantly enlarged, and the effective contact area between the lower end of the heat-resistant sealing layer 12 and the inclined plate 13 is greatly increased, thereby improving the effect of surface sealing. The heat-resistant binding layer 15 is made of heat-resistant material, and mainly functions to fix the heat-resistant flexible layer 14 on the outside.

Example 7

Referring to Figures 1 to 4, the structure of the sintering cooler of this embodiment is basically the same as that of Embodiment 6, and further:

A baffle 6 is installed on both sides of the outermost high temperature resistant cloth along the length direction on which the counterweight 8 is placed, and the bolts pass through the baffle 6 and the outermost high temperature resistant cloth in turn, so that the outermost high temperature resistant cloth is along the length direction. The interlayers on both sides are clamped; the installation of the baffle 6 is used to limit the lateral movement of the counterweight 8 in the interlayer on both sides of the outermost high temperature resistant cloth to ensure that the counterweight 8 does not resist from the outermost layer. Both sides of the high temperature cloth slide out.

In this embodiment, a pressing plate 5 extending along the length direction is installed in the middle of the outermost high temperature resistant cloth, which can press the multilayer high temperature resistant cloth on the surface of the inclined plate 13 along the entire length direction. Both ends of the pressing plate 5 along the width direction are respectively provided with outward arc-shaped flanges, and the bolts pass through the pressing plate 5 and the outermost high temperature resistant cloth in turn, so that the interlayer in the middle of the outermost high temperature resistant cloth is clamped. (Through the cooperation of the bolt and the nut), the longitudinal movement of the counterweight 8 can be prevented, and at the same time, the counterweight 8 can be effectively pressed on the surface of the inclined plate 13; The outward arc-shaped flanging can not only prevent the pressing plate 5 from scratching the high temperature resistant cloth, but also make the outermost high temperature resistant cloth more tightly pressed on the inclined plate 13 .

Example 8

1 to 4, the structure of the sintering cooler of this embodiment is basically the same as that of Embodiment 7, and further:

In this embodiment, the heat-resistant sealing layer 12 includes a bottom high-temperature resistant cloth 9, a middle layer of high-temperature resistant cloth 10 and an outer high-temperature resistant cloth 11 from the inside to the outside. The counterweight 8 is placed in the interlayer of the outer high-temperature resistant cloth 11. The bottom high temperature resistant cloth 9 and the middle layer high temperature resistant cloth 10 can avoid the wear of the outer high temperature resistant cloth 11 , and the design of the three layers of high temperature resistant cloth improves the sealing effect of the heat resistant sealing layer 12 .

In this embodiment, the counterweight 8 is an iron chain or other counterweight unit with flexible connection. On the one hand, it is convenient for the counterweight 8 to be placed in the interlayer of the outer high temperature resistant cloth 11, and on the other hand, it is convenient for the counterweight 8 to be The heat-resistant flexible layer 14 is wrapped, so as to better realize the surface sealing between the lower end of the heat-resistant sealing layer 12 and the surface of the inclined plate 13 .

When the 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 conducive to the sealing effect of the surface seal. When the angle between the inclined plate 13 and the horizontal plane is too large, the heat-resistant seal When the relative movement between the lower end of the layer 12 and the inclined plate 13 is maintained, the heat-resistant sealing layer 12 is prone to wrinkles, which also reduces the sealing effect of the surface seal; in this embodiment, the angle between the inclined plate 13 and the horizontal plane is designed to be 15～ 75°, which effectively avoids the above problems. Specifically, in this embodiment, the angle between the inclined plate 13 and the horizontal plane is 15°.

In this embodiment, the heat-resistant flexible layer 14 is thermal insulation cotton and/or ceramic fiber cloth, and the heat-resistant binding layer 15 is metal foil paper and/or metal foil tape. Specifically, in this embodiment, the outside of the counterweight 8 is wrapped with a layer of thermal insulation cotton. First, glue is applied to the outside of the thermal insulation cotton, and then a layer of metal foil paper is wrapped around the outside of the thermal insulation cotton. Equally spaced metal foil tapes are wound and fastened.

Example 9

1 to 4, the structure of the sintering cooler of this embodiment is basically 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 inner angle steel 1 is sealed and welded to the side of the fume hood 3, wherein the inner angle steel 1. The sealing welding place of the outer surface of the bending place is the sealing welding line 16. The sealing welding line 16 is not only the force fulcrum of the inner angle steel 1 fixed on the side of the fume hood 3, but also the point between the inner angle steel 1 and the side of the fume hood 3. Seal, which can prevent hot air from leaking from here. In this embodiment, the sealing welding wire 16 has undergone an engineering withstand voltage test, and the air leakage rate is controlled below 0.1%.

The sintering cooler of this embodiment is developed for the problem that the existing cooling trolley 4 is not well sealed with the upper fume hood 3 during the movement, and there are problems such as leakage of hot air and suction of cold air. A heat-resistant sealing layer 12 is arranged between the vehicle 4 and the fume hood 3, and the heat-resistant sealing layer 12 is made of flexible materials. The good dynamic seal between the hood 3 and the cooling trolley 4 reduces the air leakage rate from the original 50% to less than 20%, and the boiler power generation increases by about 10%, and the return period is less than half a year. It should be noted that the dynamic sealing device in this embodiment is not only suitable for the dynamic sealing cooperation between the cooling trolley 4 and the fume hood 3 in the sintering cooler, but also for the dynamic sealing cooperation between similar moving and static objects.

In the existing actual production process, it is difficult to find a material with high temperature resistance, good wear resistance and good lubricity to replace the fiberboard. Therefore, although there are some problems in the method of using the fiberboard sealing, it is difficult for those of ordinary skill in the art to have a correct answer. Motivation for the study of the sealing problem at this location. However, the sintering cooler of this embodiment only needs to follow the general maintenance requirements of the sintering cooler, and a simple and effective dynamic sealing device can be installed and deployed in a short time, which is suitable for popularization and use.

Example 10

The structure of the sintering cooler of this embodiment is basically the same as that of Embodiment 9, and the difference lies in:

The fixing method of the heat-resistant sealing layer 12 in this embodiment is different from that in Embodiment 8. In this embodiment, an asbestos plate is threadedly connected to the side of the fume hood 3 and the upper end of the heat-resistant sealing layer 12 is clamped and fixed on the asbestos plate and the Between the fume hoods 3 , the upper end of the heat-resistant sealing layer 12 can be conveniently fixed on the fume hood 3 .

Example 11

The structure of the sintering cooler of this embodiment is basically the same as that of Embodiment 9, except that in this embodiment, the angle between the inclined plate 13 and the horizontal plane is 75°.

The present invention and its embodiments have been described above schematically, and the description is not restrictive, and what is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it, without departing from the purpose of the present invention, any structural modes and embodiments similar to this technical solution are designed without creativity, which shall belong to the protection scope of the present 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).

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