CN215412522U

CN215412522U - Vertical hot-blast stove

Info

Publication number: CN215412522U
Application number: CN202121528302.8U
Authority: CN
Inventors: 胡彪; 熊龙; 巫昌旺; 李如稳
Original assignee: Fogang Ming Yang Machinery Co ltd
Current assignee: Fogang Ming Yang Machinery Co ltd
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2022-01-04
Anticipated expiration: 2031-07-06

Abstract

The utility model discloses a vertical hot blast stove which comprises a hearth, a heat exchanger and a heat exchange box, wherein the hearth is used for burning fuel to generate hot gas; the heat exchanger is arranged above the hearth; the heat exchanger and the hearth are arranged in the heat exchange box, the heat exchange box is provided with an air inlet end, the air inlet end is used for introducing clean cold air, the heat exchange box is provided with an air outlet, and the air outlet is used for discharging the clean hot air. The vertical hot blast stove is characterized in that the heat exchanger is arranged above the hearth, and the hot air of the hearth generated after combustion is heated and continuously rises and flows into the heat exchanger for heat exchange, so that the cost of the whole stove is saved. The vertical hot blast stove adopts an indirect heat exchange mode, the hearth and the heat exchanger are arranged in the heat exchange box, the heat exchange efficiency is high, the size is small, and the vertical hot blast stove is suitable for dragging equipment with small heat consumption.

Description

Vertical hot-blast stove

Technical Field

The utility model relates to the technical field of hot blast stoves, in particular to a vertical hot blast stove.

Background

With the development and progress of society, people pay more and more attention to the environment, and the traditional hot blast stove is gradually replaced by a biomass hot blast stove, wherein the biomass hot blast stove takes biomass as fuel, and the generated harmful gas is less than that of the traditional fuel. However, the biomass generally has the characteristics of high water content, large fuel size change and the like, so that the biomass hot blast stove has the defects of uneven air distribution, low heat efficiency and the like. At present, most of biomass particle furnaces with high power are on the market, have larger appearances, are not suitable for dragging equipment with small heat consumption, and are easy to cause waste.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, the utility model provides a vertical hot blast stove, which adopts the following technical scheme:

the vertical hot blast stove provided by the utility model comprises a hearth, a heat exchanger and a heat exchange box, wherein the hearth is used for burning fuel to generate hot gas; the heat exchanger is arranged above the hearth; the heat exchanger and the hearth are arranged in the heat exchange box, the heat exchange box is provided with an air inlet end, the air inlet end is used for introducing clean cold air, the heat exchange box is provided with an air outlet, and the air outlet is used for discharging the clean hot air.

In certain embodiments of the present invention, the heat exchanger is provided with at least two.

In some embodiments of the present invention, the heat exchange tubes of the heat exchangers have different tube diameters.

In some embodiments of the present invention, the heat exchange tube diameter of each heat exchanger gradually decreases along the air outlet direction.

In some embodiments of the utility model, the vertical hot blast stove comprises a cyclone dust collector, and the cyclone dust collector is arranged at the air outlet end of the heat exchanger.

In some embodiments of the utility model, the air outlet of the cyclone dust collector is connected with a smoke exhaust pipe.

In some embodiments of the utility model, the air inlet end is arranged at the side plate of the heat exchange box, and the air inlet end is provided with a plurality of air inlets.

In some embodiments of the utility model, the top plate of the heat exchange box is provided with a safety valve, and the safety valve is used for regulating the pressure in the heat exchange box.

In certain embodiments of the utility model, the vertical stove comprises a feeding device for providing the biomass fuel required for combustion.

In some embodiments of the utility model, an ash hopper is arranged at the bottom of the heat exchanger and used for collecting smoke dust in hot gas of a hearth.

The embodiment of the utility model has at least the following beneficial effects: the vertical hot blast stove is characterized in that the heat exchanger is arranged above the hearth, and the hot air of the hearth generated after combustion is heated and continuously rises and flows into the heat exchanger for heat exchange, so that the cost of the whole stove is saved. The vertical hot blast stove adopts an indirect heat exchange mode, the hearth and the heat exchanger are arranged in the heat exchange box, the heat exchange efficiency is high, the size is small, and the vertical hot blast stove is suitable for dragging equipment with small heat consumption.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a front view of a vertical hot blast stove;

FIG. 2 is a left side view of the vertical hot blast stove;

fig. 3 is a top view of the vertical hot blast stove.

Reference numerals: 100. a feeding device; 110. a feeding port; 120. a material lifting machine; 130. a storage bin; 140. a feed hopper; 150. a feeding flood dragon; 160. a blowing fan; 200. a hearth; 210. an oxygen supply fan; 310. a first heat exchanger; 320. a second heat exchanger; 330. a third heat exchanger; 331. an ash hopper; 400. a heat exchange box; 410. an air outlet cover; 420. a safety valve; 510. a cyclone dust collector; 520. a first smoke exhaust pipe; 530. a smoke exhaust fan; 540. and a second smoke exhaust pipe.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., are used in an orientation or positional relationship indicated based on the drawings, it is merely for convenience of description and simplicity of description, and it is not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore, is not to be considered as limiting the present invention. The features defined as "first" and "second" are used to distinguish feature names rather than having a special meaning, and further, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model relates to a vertical hot blast stove, which comprises a hearth 200 and a heat exchanger, wherein the hearth 200 is used for burning fuel to generate hot gas; the heat exchanger is arranged above the hearth 200; biomass fuel burns at the position of the hearth 200 to generate hearth hot gas, the hearth hot gas continuously rises to the heat exchanger to exchange heat with clean cold air through the dividing wall, and cleanness of hot air during discharge is guaranteed.

The vertical hot blast stove comprises a heat exchange box 400, and the heat exchanger and the hearth 200 are integrally arranged in the heat exchange box 400, so that the volume and the occupied space of the hot blast stove are reduced, and the vertical hot blast stove can be adapted to various different scenes. The top plate of the heat exchange tank 400 is provided with a safety valve 420, and the safety valve 420 is used for regulating the pressure in the heat exchange tank 400. Further, a relief valve 420 is provided as a relief valve. When the pressure in the heat exchange tank 400 is too high, the safety valve 420 is automatically opened to reduce the pressure in the heat exchange tank 400, so that the safe and stable operation of the hot blast stove is ensured.

The heat exchange box 400 is provided with an air inlet end, the air inlet end is arranged at the side plate of the heat exchange box 400, and the air inlet end is used for introducing clean cold air. With the attached drawings, a plurality of air inlets are arranged at the air inlet end. The fluid state of clean cold air at the air inlet end can be changed by arranging a plurality of air inlets at the side plate of the heat exchange box 400, so that the heat exchange in the heat exchange box 400 is further enhanced, and the heat exchange efficiency is improved. It will be appreciated that the same object may also be achieved by providing a barrier or the like at the air inlet end.

The heat exchange box 400 is provided with an air outlet for discharging clean hot air. An air outlet cover 410 is arranged at an air outlet of the heat exchange box 400, the air outlet cover 410 is arranged on the side wall of the heat exchanger, and clean hot air which completes heat exchange circulates to the air outlet cover 410 from the heat exchanger and is discharged for next utilization. The air outlet cover 410 is of a table structure, the area of one end, connected with the heat exchange box 400, of the air outlet cover 410 is large, the area of one end, far away from the heat exchange box 400, of the air outlet cover is small, and the air outlet cover can play a role in assisting air outlet.

Furnace 200 sets up in heat transfer case 400 bottom, and furnace 200 bottom is provided with oxygen supply fan 210, and oxygen supply fan 210 is used for carrying the oxygen that supplies biomass fuel burning to use, and the furnace steam of whipping simultaneously lasts to rise. The bottom of the hearth 200 is provided with an ash cleaning port for periodically cleaning ash generated by the combustion of the biomass fuel. Further, an access door is arranged above the ash removing port and used for observing and overhauling equipment in the maintenance hearth 200.

The heat exchangers in the heat exchange box 400 are at least two, and the heat exchange tubes of at least two heat exchangers have different tube diameters. In combination with the attached drawing, the vertical hot blast stove is provided with three heat exchangers which are communicated through an upper air box, hot air in the hearth rises from the hearth 200 to the first heat exchanger 310, exchanges heat with clean cold air through a partition wall, sequentially flows through the second heat exchanger 320 and the third heat exchanger 330, continues to exchange heat with the clean cold air, and is finally discharged from an air outlet end of the third heat exchanger 330.

Further, the pipe diameters of the heat exchange pipes of the at least two heat exchangers are gradually reduced along the air outlet direction. Referring to the drawings, the heat exchange tube diameter of the first heat exchanger 310 is the largest, and the heat exchange tube diameter of the third heat exchanger 330 is the smallest. The heat exchange pipe diameter is smaller, the heat transfer area of unit volume is larger, the structure is more compact, the cost of metal materials is lower, the heat exchange pipe can be prevented from being blocked due to the design that the pipe diameter of the heat exchange pipe is gradually reduced, the normal operation of the heat exchanger is ensured, and the replacement and maintenance in the later period are facilitated. The heat exchange tubes of the heat exchangers are arranged in different pipe diameters, so that the heat exchange efficiency is improved by fully utilizing the hot gas in the hearth, and the heat exchange tubes are convenient to clean and replace.

The bottom of the heat exchanger is provided with an ash bucket 331, and the ash bucket 331 is used for collecting smoke dust in hot gas of the hearth. Further, a dust hopper 331 is welded to the bottom of the third heat exchanger 330 for collecting dust impurities in a portion of the hot wind. With reference to the drawings, the bottom end of the ash bucket 331 is provided with an ash cleaning port for periodically cleaning accumulated ash in the ash bucket 331; the side of ash bucket 331 is provided with the access door, and the access door is used for regularly clearing up the dirt of heat exchanger inner wall, guarantees heat exchange efficiency.

The vertical hot blast stove comprises a cyclone dust collector 510, and the cyclone dust collector 510 is arranged at the air outlet end of the heat exchanger. Further, the air inlet end of the cyclone dust collector 510 is communicated with the air outlet end of the third heat exchanger 330, and the hot gas in the furnace chamber enters the cyclone dust collector 510 for pre-dedusting after heat exchange in the heat exchanger, so that the subsequent discharge of the hot gas in the furnace chamber is facilitated; on the other hand, the cyclone 510 disposed at the air outlet end of the third heat exchanger 330 plays a role of assisting in sucking hot air in the furnace. With reference to the drawings, a dust bag is disposed at the bottom of the cyclone dust collector 510, so that dust in the cyclone dust collector 510 can be cleaned regularly, and the dust collection effect can be ensured.

The air outlet of the cyclone 510 is connected with a smoke exhaust pipe. Further, the smoke exhaust fan 530 is arranged at the smoke exhaust pipe, and the smoke exhaust fan has certain attraction to hot gas in the hearth, so that the circulation of the smoke can be assisted, and the heat exchange efficiency of the hot blast stove is improved.

The air inlet end of the first exhaust pipe 520 is connected with the air outlet end of the cyclone dust collector 510, and the side wall of the first exhaust pipe 520 is provided with an adjusting plate capable of moving up and down. The first smoke exhaust pipe 520 is provided with a plurality of small air holes at positions corresponding to the adjusting plates, and the adjusting plates can move up and down to shield the air holes to different degrees, so that the pressure in the pipeline is adjusted, and the circulation of smoke is assisted. The first exhaust pipe 520 may also be provided with a ventilation hole or a release valve to adjust the wind pressure, so as to assist the flue gas in the cyclone dust collector 510 to be transmitted to the exhaust fan 530.

The first smoke exhaust pipe 520 is connected to the second smoke exhaust pipe 540 through the smoke exhaust fan 530. Further, the second smoke exhaust pipe 540 is vertically arranged at the tail end of the vertical hot blast stove, so that the smoke with residual temperature can be conveniently discharged to the environment in an ascending way. The second smoke exhaust pipe 540 adopts a chimney-shaped structure, so that smoke is exhausted to the high altitude, and ground pollution is reduced. The bottom of the second smoke exhaust pipe 540 is provided with an ash cleaning port for cleaning falling ash in the smoke exhaust process.

Clean cold air enters the heat exchange box 400 from an air inlet hole at a side plate of the heat exchange box 400, passes through the outer wall of the hearth 200 and the heat exchanger in sequence to complete heat exchange, and is discharged out of the heat exchange box 400 from the air outlet cover 410 in a clean hot air mode for next-step utilization; the hot gas generated by combustion in the furnace 200 continuously rises to the heat exchangers, sequentially flows through the first heat exchanger 310, the second heat exchanger 320 and the third heat exchanger 330, enters the cyclone dust collector 510, and is finally discharged to the environment from the smoke exhaust pipe after being subjected to dust removal treatment for several times.

The vertical hot blast stove comprises a feeding device 100, and the feeding device 100 is used for providing biomass fuel required by combustion. Further, the feeding device 100 includes a feeding port 110, a lifter 120, and a storage bin 130. The biomass fuel is fed into the feeding device 100 through the feeding port 110, and is transported to the storage bin 130 by the elevator 120. The top of the storage bin 130 is provided with a sensing device, when the storage bin 130 overflows, a warning is given out, the fuel conveying of the feeding port 110 and the material lifting machine 120 is stopped in time, and the stable operation of the feeding device 100 is ensured.

The feeding device 100 comprises a feeding mechanism, which comprises a feeding hopper 140, a feeding screw 150 and a blowing fan 160. The feed hopper 140 is connected to the lower end of the storage bin 130, the biomass fuel falls from the feed hopper 140 to the feeding auger 150, and the feeding auger 150 further transfers the biomass fuel to the blowing fan 160. The blowing fan 160 is communicated with the heat exchange box 400, and blows the biomass fuel to the hearth 200 for combustion and utilization.

In the description herein, references to the terms "one embodiment," "some examples," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like, if any, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A vertical hot blast stove, characterized by comprising:

a furnace (200), said furnace (200) for burning fuel to produce hot gases;

the heat exchanger is arranged above the hearth (200);

heat transfer case (400), heat exchanger, furnace (200) set up in heat transfer case (400), heat transfer case (400) are provided with the air inlet end, the air inlet end is used for letting in clean cold wind, heat transfer case (400) are provided with the air outlet, the air outlet is used for clean hot-blast discharge.

2. The vertical stove according to claim 1, characterized in that: the heat exchanger is provided with at least two.

3. The vertical stove according to claim 2, characterized in that: and the heat exchange tubes of the heat exchangers have different pipe diameters.

4. The vertical stove according to claim 3, characterized in that: the pipe diameter of the heat exchange pipe of each heat exchanger is gradually reduced along the air outlet direction.

5. The vertical stove according to claim 1, characterized in that: the vertical hot blast stove comprises a cyclone dust collector (510), and the cyclone dust collector (510) is arranged at the air outlet end of the heat exchanger.

6. The vertical stove according to claim 5, characterized in that: an air outlet of the cyclone dust collector (510) is connected with a smoke exhaust pipe.

7. The vertical stove according to claim 1, characterized in that: the air inlet end is arranged at a side plate of the heat exchange box (400), and a plurality of air inlets are formed in the air inlet end.

8. The vertical hot blast stove according to claim 7, characterized in that: a safety valve (420) is arranged on the top plate of the heat exchange box (400), and the safety valve (420) is used for adjusting the pressure in the heat exchange box (400).

9. The vertical stove according to claim 1, characterized in that: the vertical hot blast stove comprises a feeding device (100), wherein the feeding device (100) is used for providing biomass fuel required by combustion.

10. The vertical stove according to claim 1, characterized in that: an ash hopper (331) is arranged at the bottom of the heat exchanger, and the ash hopper (331) is used for collecting smoke dust in hot gas of the hearth.