CN215941492U

CN215941492U - Heat preservation device suitable for molten metal

Info

Publication number: CN215941492U
Application number: CN202121781875.1U
Authority: CN
Inventors: 王子允
Original assignee: Jiangxi Xuxiang Electric Power Technology Co ltd
Current assignee: Jiangxi Xuxiang Electric Power Technology Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-03-04
Anticipated expiration: 2031-08-02

Abstract

The utility model discloses a heat preservation device suitable for molten metal, which belongs to the technical field of equipment for metal processing, wherein a crucible is arranged in a heat preservation furnace body, a heating device is arranged outside the crucible, a temperature control device is arranged on one side of the heat preservation furnace body, a rotating shaft is connected with the top of the heat preservation furnace body, a furnace cover is fixedly connected with the top of the rotating shaft, a collecting block is arranged above the crucible, the top of the collecting block is close to the bottom of the furnace cover, an annular groove is arranged inside the collecting block, a suction nozzle is arranged on one side of the annular groove, a conveying pipe is connected with one side of the suction nozzle away from the annular groove, a fan is connected with one end of the conveying pipe away from the suction nozzle, a motor is arranged on one side of the fan, the output end of the motor is connected with a main shaft of a fan blade in the fan, a flue gas transmission pipe is connected with the output end of the fan, at least two grooves are arranged on the conveying pipe, and a filter plate with different diameters of filter holes is inserted in each groove, so that the problem that the existing holding furnace cannot collect waste gas and dust generated by molten metal is solved.

Description

Heat preservation device suitable for molten metal

Technical Field

The utility model belongs to the technical field of metal processing equipment, and particularly relates to a heat preservation device suitable for molten metal.

Background

Continuous Casting and Rolling is called continuous Casting and Rolling (CCDR for short), and is a steel Rolling process in which molten metal is poured into a continuous Casting machine to cast a metal blank (called continuous Casting blank), and then the metal blank is directly rolled and formed in a hot continuous Rolling unit after being kept warm for a certain time in a soaking furnace without cooling. The process combines the casting process and the rolling process skillfully, and has the advantages of simplifying the process, improving the labor condition, increasing the metal yield, saving energy, improving the quality of continuous casting billets and being convenient for realizing mechanization and automation compared with the traditional process of firstly casting billets, heating by a heating furnace and then rolling, because the metal is generally rapidly smelted, the smelting temperature of molten metal is different from the required casting temperature, the metal needs to be placed in a holding furnace for controlling and stabilizing the temperature of the molten metal after the metal is smelted, then the holding furnace can pour the molten metal into a continuous casting machine for casting the metal billets when the molten metal is controlled at the proper casting temperature, the conventional holding furnace still needs to continuously heat the molten metal in the holding process, and the conventional holding furnace cannot continuously heat the molten metal, the waste gas or smoke dust generated by the molten metal is collected, so that the waste gas or smoke dust has great influence on the health and working environment of operators.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a heat preservation device suitable for molten metal, which has the characteristic of collecting waste gas or smoke dust generated by the molten metal when the molten metal is continuously heated.

In order to achieve the purpose, the utility model provides the following technical scheme: a heat preservation device suitable for molten metal comprises a heat preservation furnace body, wherein a crucible is arranged in the heat preservation furnace body and used for placing the molten metal, a heating device is arranged on the outer side of the crucible and used for heating the molten metal in the crucible, and a temperature control device is arranged on one side of the heat preservation furnace body and used for controlling the heating device to enable the molten metal to be stabilized in a proper temperature range;

the utility model discloses a heat preservation stove, including holding furnace body, rotation axis top fixedly connected with bell, the crucible top is equipped with one and collects the piece, collect piece top with the bell bottom is pressed close to, collect the piece inboard and open and be equipped with the ring channel, ring channel one side is equipped with the suction nozzle, the suction nozzle is kept away from one side of ring channel is connected with the transport pipe, the transport pipe is kept away from the one end of suction nozzle is connected with the fan, fan one side is equipped with the motor, the motor output with fan inner leaf spindle connection, the fan output is connected with the flue gas transmission pipe, be equipped with two at least recesses on the transport pipe, and it has the filter plate of filter eye diameter variation in the interpolation of every recess.

Preferably, the outer ring of the conveying pipe is provided with a plurality of circles of cooling pipes which are spirally wound.

Preferably, the filter plate includes fixture block, filter screen and handle, the handle sets up the filter screen top, the filter screen both sides are equipped with the fixture block for paste tightly the recess lateral wall.

Preferably, inlay bottom of the furnace cover and have graphite packing, just graphite packing is hugged closely collect a top, the inside thermal-insulated asbestos board that is equipped with of bell circular table portion, and the bell body is made for nodular cast iron.

Preferably, the conveying pipe is divided into two sections, namely a straight section and a bent section, the bent section is S-shaped, and the straight section is further provided with two threaded holes which are located on the side wall of the groove.

Preferably, the filter screen is formed by interweaving a plurality of strands of high silica glass fibers, and the surface of the filter screen is coated with high-temperature-resistant paint.

Compared with the prior art, the utility model has the beneficial effects that:

1. when the furnace cover is opened, air at the top of a crucible in the heat preservation furnace is extracted by a fan, so that waste gas and smoke dust generated by molten metal in the heat preservation furnace body are transmitted to a smoke transmission pipe through a suction nozzle and a conveying pipe, are transmitted to factory waste gas and smoke dust purification equipment through the smoke transmission pipe, meanwhile, the temperature of the smoke dust and the waste gas is preliminarily reduced through a cooling pipe outside the conveying pipe, and then fine metal particles and dust in the waste gas and smoke dust are preliminarily filtered through a plurality of filter plates, so that the damage of the fine metal particles and the dust to fan blades is reduced, and the service life of the fan blades is prolonged.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the present invention in partial cutaway of the three-dimensional structure;

FIG. 3 is a schematic perspective view of the filter plate;

in the figure: 1. a holding furnace body; 2. collecting blocks; 3. a furnace cover; 4. a rotating shaft; 5. a temperature control device; 6. a suction nozzle; 7. a transport pipe; 8. a cooling tube; 9. filtering the plate; 10. a fan; 11. a motor; 12. a flue gas transmission pipe; 13. a crucible; 14. an annular groove; 901. a clamping block; 902. filtering with a screen; 903. a handle.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-3, the present invention provides the following technical solutions: a heat preservation device suitable for molten metal comprises a heat preservation furnace body 1, wherein a crucible 13 is arranged in the heat preservation furnace body 1 and used for placing the molten metal, a heating device is arranged on the outer side of the crucible 13 and used for heating the molten metal in the crucible 13, and a temperature control device 5 is arranged on one side of the heat preservation furnace body 1 and used for controlling the heating device to enable the molten metal to be stable in a proper temperature range;

the top of the heat preservation furnace body 1 is connected with a rotating shaft 4, the top of the rotating shaft 4 is fixedly connected with a furnace cover 3, a collection block 2 is arranged above a crucible 13, the top of the collection block 2 is close to the bottom of the furnace cover 3, a ring groove 14 is formed in the inner side of the collection block 2, a suction nozzle 6 is arranged on one side of the ring groove 14 and connected with a transport pipe 7, one end, away from the suction nozzle 6, of the transport pipe 7 is connected with a fan 10, one side of the fan 10 is provided with a motor 11, the output end of the motor 11 is connected with a fan blade spindle in the fan 10, the output end of the fan 10 is connected with a flue gas transmission pipe 12, at least two grooves are formed in the transport pipe 7, and a filter plate 9 with different filter hole diameters is inserted in each groove.

Specifically, the conveying pipe 7 outer lane is equipped with many circles of cooling tube 8, and it is the spiral winding setting, has guaranteed to carry out preliminary cooling with waste gas and the smoke and dust that the molten metal produced, reduces the damage to filter plate 9.

Specifically, the filter plate 9 includes a fixture block 901, a filter screen 902 and a handle 903, the handle 903 is disposed at the top of the filter screen 902, the fixture block 901 is disposed on two sides of the filter screen 902, and is used for being attached to the side wall of the groove, so that the filter plate can be attached to the side wall of the groove more closely, and meanwhile, the handle is more convenient for a worker to pull out.

Specifically, 3 bottoms of bell are inlayed and are had the graphite packing, and the graphite packing hugs closely and collects 2 tops of piece, and 3 boss portions of bell are inside to be equipped with thermal-insulated asbestos board, and the 3 bodies of bell make for nodular cast iron, make it possess better heat preservation effect.

Specifically, the conveying pipe 7 is divided into two sections, namely a straight section and a bent section, the bent section is S-shaped, two threaded holes are formed in the straight section of the conveying pipe and located on the side wall of the groove, and the bent section is S-shaped, so that when waste gas and smoke dust generated by molten metal pass through the bent section, the staying time of the waste gas and the smoke dust can be prolonged, and the cooling pipe 8 is guaranteed to cool the waste gas and the smoke dust for a longer time.

Specifically, the filter screen 902 is formed by interweaving a plurality of strands of high silica glass fibers, and the surface of the filter screen is coated with high-temperature-resistant paint, so that the filter screen has a longer service life.

By adopting the technical scheme, when the furnace cover 3 is opened, the air at the top of the crucible 13 is extracted by the fan 10, so that the waste gas and the smoke dust generated by the molten metal in the heat preservation furnace body 1 are transmitted to the smoke gas transmission pipe 12 through the suction nozzle 6 and the conveying pipe 7, are transmitted to the factory waste gas and smoke dust purification equipment through the smoke gas transmission pipe 12, meanwhile, the temperature of the smoke dust and the waste gas is preliminarily reduced through the cooling pipe 8 outside the conveying pipe 12, then fine metal particles and dust in the waste gas and smoke dust are preliminarily filtered through the plurality of filter plates 9, the damage of the fine metal particles and the dust to the blades of the fan 10 is reduced, and the service life of the blades of the fan 10 is prolonged.

The working principle and the using process of the utility model are as follows: the utility model describes a heat preservation device suitable for molten metal, when the molten metal is melted and needs to be preserved and controlled in temperature, the molten metal is transferred from a melting furnace into a crucible 13 in a heat preservation furnace body 1 through a ladle or a launder, after the transfer is finished, a furnace cover 3 is closed, then a heating device is controlled through a temperature control device 5, so that the molten metal is controlled at a proper casting temperature, when the casting is needed, the furnace cover 3 is opened, the molten metal is transferred into a die casting machine through the ladle, simultaneously a motor 11 is opened, a fan 10 starts to work, the fan 10 pumps air at the top of the crucible 13, so that waste gas and smoke dust generated by the molten metal in the heat preservation furnace body 1 are transmitted to a smoke transmission pipe 12 through a suction nozzle 6 and a conveying pipe 7, are transmitted into a factory smoke dust purification device through the smoke transmission pipe 12, and simultaneously pass through a cooling pipe 8 outside the conveying pipe 12, carry out preliminary cooling to the temperature of smoke and dust and waste gas, wherein the external cold water source is connected to the one end of cooling tube 8, carry out circulative cooling, then carry out prefiltration with tiny metal particle and dust in the waste gas smoke and dust through polylith filter plate 9, reduce the damage of tiny metal particle and dust to fan 10 blade, make the life of fan 10 blade improve, after filtering the completion, need clear up or when changing filter plate 9, take out the bolt in the screwed hole of transport pipe 7 lateral wall, then clear up filter plate 9 through handle 903, after the discovery damages, change the filter plate 9 of the same specification, then reset it, and it is fixed and spacing to continue through the bolt, accomplish so far.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a heat preservation device suitable for molten metal, includes heat preservation stove body (1), its characterized in that: a crucible (13) is arranged in the heat preservation furnace body (1) and used for placing molten metal, a heating device is arranged on the outer side of the crucible (13) and used for heating the molten metal in the crucible (13), and a temperature control device (5) is arranged on one side of the heat preservation furnace body (1) and used for controlling the heating device to enable the molten metal to be stabilized in a proper temperature range;

the top of the heat preservation furnace body (1) is connected with a rotating shaft (4), the top of the rotating shaft (4) is fixedly connected with a furnace cover (3), a collecting block (2) is arranged above a crucible (13), the top of the collecting block (2) is close to the bottom of the furnace cover (3), an annular groove (14) is formed in the inner side of the collecting block (2), a suction nozzle (6) is arranged on one side of the annular groove (14), one side, far away from the annular groove (14), of the suction nozzle (6) is connected with a conveying pipe (7), one end, far away from the suction nozzle (6), of the conveying pipe (7) is connected with a fan (10), a motor (11) is arranged on one side of the fan (10), the output end of the motor (11) is connected with a main shaft of a fan blade in the fan (10), the output end of the fan (10) is connected with a flue gas conveying pipe (12), at least two grooves are formed in the conveying pipe (7), and a filter plate (9) with different diameters of filter holes is inserted in each groove.

2. An insulating device suitable for molten metal according to claim 1, characterized in that: the outer ring of the conveying pipe (7) is provided with a plurality of circles of cooling pipes (8) which are spirally wound.

3. An insulating device suitable for molten metal according to claim 1, characterized in that: the filter plate (9) comprises clamping blocks (901), a filter screen (902) and a handle (903), the handle (903) is arranged at the top of the filter screen (902), and the clamping blocks (901) are arranged on two sides of the filter screen (902) and used for being tightly attached to the side wall of the groove.

4. An insulating device suitable for molten metal according to claim 1, characterized in that: the utility model discloses a furnace cover, including bell (3), collection piece (2), bell (3) dome portion, graphite packing, heat-insulating asbestos board, and bell (3) body is made for nodular cast iron.

5. An insulating device suitable for molten metal according to claim 1, characterized in that: the conveying pipe (7) is divided into two sections, namely a straight section and a bent section, the bent section is S-shaped, and two threaded holes are formed in the straight section and are located in the side wall of the groove.

6. A holding device for molten metal according to claim 3, wherein: the filter screen (902) is formed by interweaving a plurality of strands of high silica glass fibers, and the surface of the filter screen is coated with high-temperature-resistant paint.