CN214842557U

CN214842557U - Electric furnace exhaust-heat boiler

Info

Publication number: CN214842557U
Application number: CN202121032624.3U
Authority: CN
Inventors: 施郑; 张骥宇; 鲁鑫; 吴敏
Original assignee: Shanghai Yixiao New Energy Technology Co ltd
Current assignee: Shanghai Yixiao New Energy Technology Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-11-23
Anticipated expiration: 2031-05-14

Abstract

The utility model discloses an electric furnace waste heat boiler, which comprises a waste heat boiler body, wherein a hearth water-cooled wall cavity, an evaporator and a coal economizer are arranged inside the waste heat boiler body, a steam pocket is arranged at the top of one side of the waste heat boiler body, a communicated steam outlet is arranged at the top of the steam pocket, a flue gas outlet is arranged at the top of the waste heat boiler body, a communicated discharging funnel is arranged at the bottom of the waste heat boiler body, a flue gas inlet and a discharging funnel are arranged at the bottom of the waste heat boiler body, a first supporting plate and a second supporting plate are arranged at the bottom of the waste heat boiler body, the utility model has simple structure, adopts a water pipe supporting structure, has a water volume larger than that of a conventional boiler, adapts to the large fluctuation of the flue gas temperature, adopts a vertical angle pipe structure to reasonably set an expansion center, and ensures that the steel consumption under the safe and reliable condition of the boiler is far lower than that of the conventional suspension structure, the height of each level of heating surface is modularized, so that the transportation and the construction site assembly are convenient, and the use is convenient.

Description

Electric furnace exhaust-heat boiler

Technical Field

The utility model relates to an electric stove waste heat utilization technology field especially relates to electric stove exhaust-heat boiler.

Background

The electric furnace can generate a large amount of high-temperature flue gas containing carbon monoxide gas and dust in smelting production, the carried sensible heat and chemical energy of the high-temperature flue gas account for 12-20% of the total input energy of the electric furnace, and the high-temperature flue gas has high recycling value.

The existing electric furnace waste heat boiler has the following defects: 1. the periodic change characteristic of electric furnace steelmaking cannot be met, so that the service life is short; 2. the normal operation under the condition that the ash amount exceeds 200g/nm3 cannot be solved; 3. short service life, serious dust deposition, overhigh temperature, frequent tube explosion and the like; 4. the structure is complex, steel consumption is high, air leakage is serious, and efficiency is low, so an electric furnace waste heat boiler is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an electric furnace waste heat boiler.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an electric furnace waste heat boiler comprises a waste heat boiler body, wherein a hearth water-cooled wall cavity, an evaporator and an economizer are arranged inside the waste heat boiler body, the top of one side of the waste heat boiler body is provided with a steam drum, the top of the steam drum is provided with a water vapor outlet which is communicated with the steam drum, the top of the waste heat boiler body is provided with a smoke outlet, the bottom of the waste heat boiler body is provided with a discharge funnel communicated with the waste heat boiler body, the bottom of the waste heat boiler body is provided with a flue gas inlet and a discharge funnel, the bottom of the waste heat boiler body is provided with a first supporting plate and a second supporting plate, four corners of the bottom of the first supporting plate are fixedly connected with first supporting frames, four corners of the bottom of the second supporting plate are fixedly connected with second supporting frames, the discharging hopper penetrates through the second supporting plate and is fixedly connected with the second supporting plate, and an ash discharging assembly used for discharging ash regularly is arranged at the bottom of the second supporting plate.

Preferably, the ash discharge assembly comprises a fixed plate fixedly connected to the top of the second support plate, one side of the fixed plate is rotatably connected with a rotating shaft, one end of the rotating shaft is fixedly connected with a rotating plate, two ends of the rotating plate are respectively and movably connected with a second baffle and a first baffle, one side of the fixed plate is fixedly connected with a servo motor, and an output shaft of the servo motor penetrates through the fixed plate and is fixedly connected with one end of the rotating shaft.

Preferably, one end, far away from the rotating plate, of the second baffle extends to the inside of the waste heat boiler body and is in sealing sliding connection with the waste heat boiler body.

Preferably, one side of the first baffle is in sliding connection with one side of the second support frame, and the top of the first baffle is abutted against the bottom of the discharge hopper.

Preferably, the evaporator, the economizer and the cavity of the water-cooled wall of the hearth are all provided with a water inlet and a water outlet.

Preferably, the evaporator, the economizer and the cavity of the water-cooled wall of the hearth are communicated with the steam drum.

Preferably, the equal fixedly connected with dead lever in one side of second baffle and first baffle, the through-hole that uses with the dead lever cooperation is all seted up at the both ends of commentaries on classics board, the one end of dead lever all extends to the inside of through-hole.

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

1. in the utility model, the flue gas entering the interior of the waste heat boiler body through the flue gas inlet exchanges heat with the water-cooled wall cavity of the hearth, the carbon monoxide in the flue gas is fully combusted by utilizing the waste heat, the burnt soot enters the discharging hopper, and the flue gas is discharged from the flue gas outlet after passing through the evaporator and the economizer;

2. the utility model discloses in, through starting servo motor, servo motor's output shaft drives the pivot and rotates, the pivot drives and changes the board rotation, it drives the second baffle to the direction lateral shifting who is close to ejection of compact funnel to change the board, and then can plug up ejection of compact funnel's top, it drives first baffle to the direction lateral shifting who keeps away from ejection of compact funnel simultaneously to change the board, and then can open ejection of compact funnel's bottom, discharge cigarette ash, and can prevent that the flue gas from discharging through ejection of compact funnel, can regularly carry out the deashing under the circumstances of not shutting down, the protection of very big degree device.

The utility model discloses simple structure adopts water pipe bearing structure, and the water volume is greater than conventional boiler, adapts to the big fluctuation of smoke temperature, adopts vertical angle pipe structure reasonable to set up the inflation center, makes steel consumption far less than conventional suspended structure under the boiler safe and reliable condition, receives the high modularization of hot side at all levels, convenient transportation and building site equipment, convenient to use.

Drawings

FIG. 1 is a schematic view of a front sectional structure of an electric furnace exhaust-heat boiler provided by the present invention;

FIG. 2 is an enlarged view of portion A of the present invention;

fig. 3 is a schematic side view of the servo motor and the rotating plate of the present invention.

In the figure: 1. a first support frame; 2. a first support plate; 3. a flue gas inlet; 4. a second support plate; 5. a discharging hopper; 6. a first baffle plate; 7. a second support frame; 8. a waste heat boiler body; 9. a coal economizer; 10. a flue gas outlet; 11. an evaporator; 12. a hearth water-cooled wall cavity; 13. a water inlet; 14. a water outlet; 15. a water vapor outlet; 16. a steam drum; 17. a rotating shaft; 18. a fixing plate; 19. a second baffle; 20. rotating the plate; 21. a servo motor; 22. a through hole; 23. and (5) fixing the rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example one

Referring to fig. 1-3, an electric furnace waste heat boiler comprises a waste heat boiler body 8, a hearth water-cooled wall cavity 12, an evaporator 11 and an economizer 9 are arranged inside the waste heat boiler body 8, a steam pocket 16 is arranged at the top of one side of the waste heat boiler body 8, a communicated steam outlet 15 is arranged at the top of the steam pocket 16, a flue gas outlet 10 is arranged at the top of the waste heat boiler body 8, a communicated discharge funnel 5 is arranged at the bottom of the waste heat boiler body 8, a flue gas inlet 3 and the discharge funnel 5 are arranged at the bottom of the waste heat boiler body 8, a first support plate 2 and a second support plate 4 are arranged at the bottom of the waste heat boiler body 8, first support frames 1 are fixedly connected at four corners of the bottom of the first support plate 2, second support frames 7 are fixedly connected at four corners of the bottom of the second support plate 4, and the discharge funnel 5 penetrates through the second support plate 4 and is fixedly connected with the second support plate 4, the bottom of the second support plate 4 is provided with an ash discharging assembly for timed ash discharging.

Example two

The embodiment is improved on the basis of the first embodiment: go out grey subassembly including fixed connection at the fixed plate 18 at 4 tops of second backup pad, one side of fixed plate 18 is rotated and is connected with pivot 17, and the one end fixedly connected with of pivot 17 changes board 20, and the both ends of changing board 20 swing joint have second baffle 19 and first baffle 6 respectively, one side fixedly connected with servo motor 21 of fixed plate 18, servo motor 21's output shaft run through fixed plate 18 and with the one end fixed connection of pivot 17.

EXAMPLE III

The embodiment is improved on the basis of the first embodiment: one end that second baffle 19 kept away from commentaries on classics board 20 extends to waste heat boiler body 8 inside and with waste heat boiler body 8 sealing sliding connection, one side of first baffle 6 and one side sliding connection of second support frame 7, the top of first baffle 6 is contradicted with ejection of compact funnel 5's bottom, evaporator 11, all be provided with water inlet 13 and delivery port 14 on economizer 9 and the furnace water-cooling wall cavity 12, evaporator 11, economizer 9 and furnace water-cooling wall cavity 12 all are linked together with steam pocket 16, the equal fixedly connected with dead lever 23 in one side of second baffle 19 and first baffle 6, through-hole 22 that uses with dead lever 23 cooperation is all seted up at the both ends of commentaries on classics board 20, the one end of dead lever 23 all extends to the inside of through-hole 22.

The working principle is as follows: when in use, flue gas enters the interior of the waste heat boiler body 8 through the flue gas inlet 3 to exchange heat with the water-cooled wall cavity 12 of the hearth, carbon monoxide in the flue gas is fully combusted by utilizing waste heat, soot after combustion enters the discharging hopper 5, and the flue gas passes through the evaporator 11 and the economizer 9 and then is discharged from the flue gas outlet 10, after a certain time, the servo motor 21 can be automatically started, the output shaft of the servo motor 21 drives the rotating shaft 17 to rotate, the rotating shaft 17 drives the rotating plate 20 to rotate, the rotating plate 20 drives the second baffle plate 19 to transversely move towards the direction close to the discharging hopper 5, so that the top of the discharging hopper 5 can be plugged, the rotating plate 20 simultaneously drives the first baffle plate 6 to transversely move along the direction opposite to the movement of the second baffle plate 19, so that the bottom of the discharging hopper 5 can be opened, the soot is discharged, and the flue gas can be prevented from being discharged through the discharging hopper 5, the ash can be removed at regular time without stopping the machine, and the device is protected to a great extent.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An electric furnace waste heat boiler comprises a waste heat boiler body (8) and is characterized in that a hearth water wall cavity (12), an evaporator (11) and an economizer (9) are arranged inside the waste heat boiler body (8), a steam pocket (16) is arranged at the top of one side of the waste heat boiler body (8), a water vapor outlet (15) communicated with each other is arranged at the top of the steam pocket (16), a flue gas outlet (10) is arranged at the top of the waste heat boiler body (8), a discharging hopper (5) communicated with each other is arranged at the bottom of the waste heat boiler body (8), a flue gas inlet (3) and a discharging hopper (5) are arranged at the bottom of the waste heat boiler body (8), a first supporting plate (2) and a second supporting plate (4) are arranged at the bottom of the waste heat boiler body (8), and first supporting frames (1) are fixedly connected to four corners of the bottom of the first supporting plate (2), the equal fixedly connected with second support frame (7) in bottom four corners of second backup pad (4), ejection of compact funnel (5) run through second backup pad (4) and with second backup pad (4) fixed connection, the bottom of second backup pad (4) is provided with the ash-discharging subassembly that is used for regularly going out the ash.

2. The electric furnace waste heat boiler as claimed in claim 1, wherein the ash discharging assembly comprises a fixing plate (18) fixedly connected to the top of the second support plate (4), one side of the fixing plate (18) is rotatably connected with a rotating shaft (17), one end of the rotating shaft (17) is fixedly connected with a rotating plate (20), two ends of the rotating plate (20) are respectively and movably connected with a second baffle plate (19) and a first baffle plate (6), one side of the fixing plate (18) is fixedly connected with a servo motor (21), and an output shaft of the servo motor (21) penetrates through the fixing plate (18) and is fixedly connected with one end of the rotating shaft (17).

3. The electric furnace waste heat boiler according to claim 2, characterized in that the end of the second baffle plate (19) far away from the rotating plate (20) extends to the inside of the waste heat boiler body (8) and is connected with the waste heat boiler body (8) in a sealing and sliding way.

4. The electric furnace waste heat boiler as claimed in claim 2, characterized in that one side of the first baffle plate (6) is slidably connected with one side of the second supporting frame (7), and the top of the first baffle plate (6) is abutted against the bottom of the discharging funnel (5).

5. The electric furnace waste heat boiler as claimed in claim 1, characterized in that the evaporator (11), the economizer (9) and the furnace water wall cavity (12) are provided with a water inlet (13) and a water outlet (14).

6. The electric furnace waste heat boiler as claimed in claim 1, characterized in that the evaporator (11), the economizer (9) and the furnace water wall cavity (12) are all communicated with a steam drum (16).

7. The electric furnace waste heat boiler as claimed in claim 2, characterized in that one side of the second baffle (19) and one side of the first baffle (6) are fixedly connected with fixing rods (23), both ends of the rotating plate (20) are provided with through holes (22) matched with the fixing rods (23), and one ends of the fixing rods (23) extend into the through holes (22).