CN218666123U

CN218666123U - Air supply device for blast furnace

Info

Publication number: CN218666123U
Application number: CN202222630014.4U
Authority: CN
Inventors: 李帅; 李宝丰; 申海清; 程闯
Original assignee: Anyang Xinyuan Casting Co ltd
Current assignee: Anyang Xinyuan Casting Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-03-21
Anticipated expiration: 2032-10-08

Abstract

The utility model relates to the technical field of blast furnaces, in particular to an air supply device for a blast furnace, which comprises an air supply pipe, a filter assembly, a self-sealing assembly and a pressure adjusting assembly, wherein the exhaust end of the air supply pipe is connected with the blast furnace, the air inlet end of the air supply pipe is externally connected with a fan, the filter assembly is arranged on the inner wall of the air inlet end of the air supply pipe, one end of the self-sealing assembly is communicated with the air supply pipe, the other end of the self-sealing assembly is communicated with the filter assembly, the self-sealing assembly is arranged on the left side of the filter assembly, the pressure adjusting assembly is connected with the self-sealing assembly, and the pressure adjusting assembly is suitable for adjusting the opening pressure of the self-sealing assembly; the utility model discloses a set up at the air inlet end of blast pipe and proclaim oneself the subassembly, when not needing the air injection, can in time close the air supply channel, reduce heat or harmful gas effluvium, set up the cartridge filter through the air inlet department at the blast pipe, can filter the air when entering, improve the quality of air.

Description

Air supply device for blast furnace

Technical Field

The utility model relates to a blast furnace technical field, concretely relates to air supply arrangement for blast furnace.

Background

The blast furnace uses steel plate as furnace shell, and refractory brick lining is built in the shell. The blast furnace body is divided into five parts from top to bottom, namely a furnace throat, a furnace body, a furnace waist, a furnace belly and a furnace hearth. Because of the advantages of good economic index, simple process, large production capacity, high labor production efficiency, low energy consumption and the like of the blast furnace ironmaking technology, the iron produced by the method accounts for the vast majority of the total iron production in the world.

Gao Lusheng production time iron ore, coke, and a flux for slag formation (limestone) are charged from the top of the furnace, and preheated air is blown from tuyeres located along the periphery of the furnace at the lower part of the furnace. Carbon in the coke (some blast furnaces also blow auxiliary fuel such as coal dust, heavy oil, natural gas and the like) at high temperature is combusted with oxygen blown into the air to generate carbon monoxide and hydrogen, and oxygen in the iron ore is removed in the ascending process in the furnaces, so that iron is obtained by reduction. The smelted molten iron is discharged from the taphole. Unreduced impurities in the iron ore are combined with fluxes such as limestone to generate slag, and the slag is discharged from a slag hole. The generated gas is discharged from the top of the furnace, and is used as fuel for hot blast stoves, heating furnaces, coke ovens, boilers and the like after dust removal. The main products of blast furnace smelting are pig iron, and blast furnace slag and blast furnace gas are also by-products.

The blast furnace air supply at present increases the air-blower in air intake department and directly supplies air, but this kind of mode can't in time carry out the shutoff to its supply-air outlet when the blast furnace does not need the air to enter again, in addition, when the air supply, impurity is more in the air, can't filter the air, and the practicality is poor.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an air supply arrangement for blast furnace can not only filter the air, when not needing the air injection, can in time close air supply channel moreover, reduces heat or harmful gas effluvium.

In order to solve the technical problem, the utility model provides an air supply device for a blast furnace, which comprises,

the exhaust end of the blast pipe is connected with the blast furnace, and the air inlet end of the blast pipe is externally connected with a fan;

the filter assembly is arranged on the inner wall of the air inlet end of the air supply pipe;

one end of the self-sealing assembly is communicated with the air supply pipe, the other end of the self-sealing assembly is communicated with the filtering assembly, and the self-sealing assembly is arranged on the left side of the filtering assembly;

the pressure regulating assembly is connected with the self-sealing assembly and is suitable for regulating the opening pressure of the self-sealing assembly.

Further, the filter assembly comprises a filter cartridge, one end of the inner side of the filter cartridge is mounted on the inner wall of the air supply pipe through a first positioning sleeve, and a second positioning sleeve is further arranged between the outer wall of the filter cartridge and the inner wall of the air supply pipe.

Furthermore, the section view of first position sleeve is concave type, and the inner wall of first position sleeve and second position sleeve all is the same with cartridge filter outer wall shape.

Furthermore, the self-sealing assembly comprises a frame body fixedly connected with the air supply pipe on two sides, the inner wall of the frame body is rotatably connected with a plurality of rotating fans used for sealing the frame body, one end of the outer side of each rotating fan penetrates through the frame body and is further connected with a transmission piece used for adjusting the opening angle of the rotating fan, and the transmission piece is connected with the pressure adjusting assembly.

Further, the driving medium includes the gear of being connected with the rotation fan, and the gear outer wall meshing has the rack, driving medium outer wall cover is equipped with the dustcoat, and dustcoat inner wall fixedly connected with guide rail, guide rail and rack sliding connection.

Furthermore, through holes are formed in the top and the bottom of the outer cover and in positions corresponding to the positions of the racks, sliding grooves are further formed in the outer wall of the outer cover, connecting plates are connected to the inner walls of the sliding grooves in a sliding mode, the inner sides of the connecting plates are fixedly connected with the racks, and the bottoms of the connecting plates are connected with the pressure adjusting assemblies.

Furthermore, the pressure adjusting assembly comprises a guide rod fixedly connected with the bottom of the connecting plate and a connecting seat fixedly connected with the outer wall of the air supply pipe, the bottom end of the guide rod penetrates through the connecting seat and is connected with an adjusting nut, and a spring is arranged between the adjusting nut and the connecting seat.

Furthermore, the outer wall of the air supply pipe is further connected with a groove cleaning pipe along the horizontal direction, and the air supply pipe at one end of the inner side of the groove cleaning pipe is communicated.

The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:

1. the utility model discloses a set up at the air inlet end of blast pipe and proclaim oneself the subassembly, when not needing the air injection, can in time close the passageway of supplying air, reduce heat or harmful gas effluvium.

2. The utility model discloses an air intake department at the blast pipe sets up the cartridge filter, can filter the air when entering, improves the quality of air.

3. The utility model discloses a proclaim oneself the subassembly outside installation pressure regulating assembly, can adjust the opening pressure size of self-sealing subassembly through pressure regulating assembly in the use to guarantee that the intake satisfies the demand.

4. The utility model discloses a set up the cleaning trough pipe, take place to clear up the blast pipe through cleaning trough pipe convenience when the blast pipe blocks up.

Drawings

Fig. 1 is a schematic view of a partial cross-sectional structure of the main view of the present invention;

FIG. 2 is a schematic structural diagram of the side view of the self-sealing assembly of the present invention;

FIG. 3 is a schematic structural diagram of a transmission member according to the present invention;

FIG. 4 is a schematic structural view of the self-sealing assembly of the present invention;

fig. 5 is a schematic structural diagram of the middle pressure adjusting assembly of the present invention.

In the figure: 1. an air supply pipe; 2. cleaning a groove pipe; 3. a self-sealing assembly; 31. a frame body; 32. rotating the fan; 33. a gear; 34. a rack; 35. a guide rail; 36. a housing; 37. a through hole; 38. a chute; 39. a connecting plate; 4. a pressure regulating assembly; 41. a guide bar; 42. a connecting seat; 43. a spring; 44. adjusting the nut; 5. a first positioning sleeve; 6. a filter cartridge; 7. a second positioning sleeve; 8. and (7) a plug.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 5 of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.

As shown in fig. 1-5: the utility model provides an air supply arrangement for blast furnace, includes the blast pipe 1 with the blast furnace intercommunication, and the air inlet end of blast pipe 1 has set gradually from inside to outside and has proclaimed oneself subassembly 3 and filtering component, seals subassembly 3 from being used for in time closing blast pipe 1, and filtering component is applicable to the air that filters the entering, improves the air quality, in addition, proclaimed oneself subassembly 3 and still is connected with pressure regulating assembly 4, and pressure regulating assembly 4 is applicable to the opening pressure of regulation proclaiming oneself subassembly 3.

Particularly, an air supply arrangement for blast furnace, including blast pipe 1, filtering component, from sealing subassembly 3, pressure regulating subassembly 4, the exhaust end and the blast furnace of blast pipe 1 are connected, the external fan of the air inlet end of blast pipe 1, the inner wall of 1 air inlet end of blast pipe is located to filtering component, seal subassembly 3 one end and blast pipe 1 intercommunication from sealing, seal subassembly 3's the other end and filtering component intercommunication from sealing, and seal subassembly 3 from sealing and locate filtering component's left side, pressure regulating subassembly 4 with seal subassembly 3 from being connected, pressure regulating subassembly 4 is applicable to the pressure of opening of adjusting self-sealing subassembly 3.

The filter assembly comprises a filter cartridge 6, one end of the inner side of the filter cartridge 6 is mounted on the inner wall of the air supply pipe 1 through a first positioning sleeve 5, a second positioning sleeve 7 is further arranged between the outer wall of the filter cartridge 6 and the inner wall of the air supply pipe 1, one end of the outer side of the air supply pipe 1 is further connected with a plug 8 used for preventing the filter cartridge 6 from falling off, the plug 8 is fixedly connected with the air supply pipe 1, the cross-sectional view of the first positioning sleeve 5 is concave, and the inner walls of the first positioning sleeve 5 and the second positioning sleeve 7 are the same as the outer wall of the filter cartridge 6 in shape.

Through setting up first position sleeve 5 and second position sleeve 7, conveniently install and fix a position cartridge filter 6 on the one hand, on the other hand can guarantee cartridge filter 6's stability.

This embodiment, proclaim oneself subassembly 3 through the air inlet end setting at blast pipe 1, when not needing the air injection, can in time close the passageway of supplying air, reduce heat or harmful gas and spill, through setting up cartridge filter 6 in the air inlet department of blast pipe 1, can filter the air when getting into, improve the quality of air, through proclaiming oneself subassembly 3 outside installation pressure regulating assembly 4, can adjust the opening pressure size of proclaiming oneself subassembly 3 through pressure regulating assembly 4 in the use, in order to guarantee that the intake satisfies the demand.

According to an embodiment of the present invention, as shown in fig. 2-4, the self-sealing assembly 3 includes a frame 31 fixedly connected to the air supply pipe 1 on both sides, the inner wall of the frame 31 is rotatably connected to a plurality of rotating fans 32 for sealing the frame 31, the end of the outer side of the rotating fan 32 passing through the frame 31 is further connected to a transmission member for adjusting the opening angle of the rotating fan 32, and the transmission member is connected to the pressure adjustment assembly 4.

The transmission piece comprises a gear 33 connected with the rotating fan 32, a rack 34 is meshed with the outer wall of the gear 33, an outer cover 36 is covered on the outer wall of the transmission piece, a guide rail 35 is fixedly connected with the inner wall of the outer cover 36, and the guide rail 35 is in sliding connection with the rack 34; by providing the guide rail 35, the stability of the rack 34 can be improved. .

In this embodiment, when the rotating fan 32 works, the rotating fan 32 is pushed to rotate by the pressure of the air supply, at this time, the gear 33 is driven by the rotating fan 32, and the gear 33 drives the rack 34 to move up and down, so as to realize the force transmission.

According to the utility model discloses a further embodiment, as shown in fig. 2-3, through-hole 37 has all been seted up to the position department that corresponds in dustcoat 36 top and bottom and rack 34 position, and the setting of through-hole 37 can prevent that rack 34 from bumping with dustcoat 36 at the in-process that removes, and spout 38 has still been seted up to dustcoat 36 outer wall, and spout 38 inner wall sliding connection has connecting plate 39, and connecting plate 39 inboard and rack 34 fixed connection, connecting plate 39 bottom is connected with pressure adjustment assembly 4.

In this embodiment, when the connection plate 39 is located at the bottom of the slide groove 38, the rotating fan 32 is in a closed state, and when the connection plate 39 is located at the top, the rotating fan 32 is at the maximum angle of opening.

In an embodiment of the present invention, as shown in fig. 5, the pressure adjusting assembly 4 includes a guide rod 41 fixedly connected to the bottom of the connecting plate 39, and a connecting seat 42 fixedly connected to the outer wall of the air supply pipe 1, the bottom end of the guide rod 41 passes through the connecting seat 42 and is connected to an adjusting nut 44, the guide rod 41 is slidably connected to the connecting seat 42, and a spring 43 is disposed between the adjusting nut 44 and the connecting seat 42.

This embodiment, when the opening pressure of rotation fan 32 needs to be improved, through upwards rotating adjusting nut 44, spring 43 compresses tightly gradually this moment, and the decurrent elasticity of spring 43 increases, and consequently the rack is difficult for driving connecting plate 39 and upwards slides to improve the opening pressure of rotation fan 32, reduce opening pressure when needs, in a similar way, only need reverse the twist adjusting nut 44 can.

In another embodiment of the present invention, as shown in fig. 1, the outer wall of the air supply pipe 1 is further connected with a cleaning slot pipe 2 along the horizontal direction, and the air supply pipe 1 at one end inside the cleaning slot pipe 2 is communicated. Through setting up clear slot pipe 2, take place when blockking up through clear slot pipe 2 conveniently to the blast pipe 1 clear up when blast pipe 1.

The utility model discloses a theory of operation:

during the use, when the injected air, cartridge filter 6 can filter the air, when not needing the air injection, can in time close the passageway of supplying gas, reduce heat or harmful gas and spill, from sealing subassembly 3 during operation, when the pressure when not admitting air, connecting plate 39 slides down under the effect of spring 43, thereby drive the rack and move down, it is sealed to rotate the fan 32 this moment, when the opening pressure of rotating the fan 32 needs to be improved, through upwards rotating adjusting nut 44, spring 43 compresses tightly gradually this moment, the decurrent elasticity of spring 43 increases, consequently the rack is difficult for driving connecting plate 39 and upwards slides, thereby improve the opening pressure that rotates fan 32, reduce opening pressure when needs, it is equitable, only need reverse the twist move adjusting nut 44 can.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An air supply device for a blast furnace is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the exhaust end of the blast pipe (1) is connected with the blast furnace, and the air inlet end of the blast pipe (1) is externally connected with a fan;

the filter assembly is arranged on the inner wall of the air inlet end of the air supply pipe (1);

one end of the self-sealing assembly (3) is communicated with the blast pipe (1), the other end of the self-sealing assembly (3) is communicated with the filtering assembly, and the self-sealing assembly (3) is arranged on the left side of the filtering assembly;

the pressure regulating assembly (4), the pressure regulating assembly (4) is connected with the self-sealing assembly (3), and the pressure regulating assembly (4) is suitable for regulating the opening pressure of the self-sealing assembly (3).

2. An air supply device for a blast furnace as set forth in claim 1, wherein: the filter assembly comprises a filter cartridge (6), one end of the inner side of the filter cartridge (6) is mounted on the inner wall of the air supply pipe (1) through a first positioning sleeve (5), and a second positioning sleeve (7) is further arranged between the outer wall of the filter cartridge (6) and the inner wall of the air supply pipe (1).

3. An air supply device for a blast furnace as defined in claim 2, wherein: the section view of the first positioning sleeve (5) is concave, and the inner walls of the first positioning sleeve (5) and the second positioning sleeve (7) are the same as the outer wall of the filter cartridge (6) in shape.

4. An air supply device for a blast furnace as defined in claim 1, wherein: the self-sealing assembly (3) comprises frame bodies (31) fixedly connected with the two sides of the air supply pipe (1), a plurality of rotating fans (32) used for sealing the frame bodies (31) are rotatably connected to the inner walls of the frame bodies (31), one end of the outer side of each rotating fan (32) penetrates through the frame bodies (31) and is further connected with a transmission piece used for adjusting the opening angle of each rotating fan (32), and the transmission piece is connected with the pressure adjusting assembly (4).

5. An air supply device for a blast furnace as defined in claim 4, wherein: the driving medium includes gear (33) be connected with rotation fan (32), and gear (33) outer wall meshing has rack (34), driving medium outer wall cover is equipped with dustcoat (36), and dustcoat (36) inner wall fixedly connected with guide rail (35), guide rail (35) and rack (34) sliding connection.

6. An air supply device for a blast furnace as set forth in claim 5, wherein: through holes (37) are formed in the top and the bottom of the outer cover (36) and in the positions corresponding to the positions of the racks (34), sliding grooves (38) are further formed in the outer wall of the outer cover (36), connecting plates (39) are connected to the inner walls of the sliding grooves (38) in a sliding mode, the inner sides of the connecting plates (39) are fixedly connected with the racks (34), and the bottoms of the connecting plates (39) are connected with the pressure adjusting assembly (4).

7. An air supply apparatus for a blast furnace as defined in any one of claims 1 to 6, wherein: the pressure adjusting assembly (4) comprises a guide rod (41) fixedly connected with the bottom of the connecting plate (39) and a connecting seat (42) fixedly connected with the outer wall of the air supply pipe (1), the bottom end of the guide rod (41) penetrates through the connecting seat (42) and is connected with an adjusting nut (44), and a spring (43) is arranged between the adjusting nut (44) and the connecting seat (42).

8. An air supply device for a blast furnace as defined in claim 1, wherein: the outer wall of the air supply pipe (1) is further connected with a groove cleaning pipe (2) along the horizontal direction, and the air supply pipe (1) at one end of the inner side of the groove cleaning pipe (2) is communicated.