CN104296151A - Trapezoid fire grate with V-shaped cracks and hot-blast heater achieving automatic stoking - Google Patents
Trapezoid fire grate with V-shaped cracks and hot-blast heater achieving automatic stoking Download PDFInfo
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- CN104296151A CN104296151A CN201410580606.7A CN201410580606A CN104296151A CN 104296151 A CN104296151 A CN 104296151A CN 201410580606 A CN201410580606 A CN 201410580606A CN 104296151 A CN104296151 A CN 104296151A
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- grate
- heater
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Abstract
The invention discloses a trapezoid fire grate with V-shaped cracks and a hot-blast heater achieving automatic stoking. The fire grate is trapezoid, the V-shaped cracks are arranged on the side wall of the fire grate, coal can be centralized in the middle to be combusted through the trapezoid structure, the V-shaped cracks are used as secondary air inlets, air entering a combustion area from the V-shaped cracks can provide oxygen for reburning of volatile components which comprise small coal particles and combustible gaseous substances and are generated in the pyrogenic decomposition process of coal sheets, the air can be used as over fire air to provide oxygen for after-burning of the volatile components, the coal is combusted more fully, and then the coal combustion efficiency is improved. Due to the fact that the coal is mainly centralized at the rear position of the middle of the fire grate to be combusted, a flat plate is adopted as a furnace bar close to a furnace door, more air enters the position on the rear portion of the middle of a hearth, and fuel can be combusted completely. The furnace door has the good sealing performance and heat preservation, hot air can be prevented from overflowing out of the furnace door, heat can be prevented from being emitted out of the furnace door, an automatic stoking device is used for stoking, and labor is saved.
Description
Technical field
The present invention relates to a kind of automatic stoking hot-blast stove for barn, particularly relate to a kind of automatic stoking hot-blast stove being applicable to tobacco curing barn.
Background technology
Current most cured tobacco curing house firing equipment is all do [2009] No. 418 processing and manufacturings according to domestic cigarettes, fire grate is horizontally set on bottom of combustion chamber, it is larger that coal cinder spreads loose area in burner hearth, and employing is the direct air intake in fire grate bottom, the structure of the in line cigarette in top, in combustion, need stoker personnel frequently toward stoking in burner hearth, the shortcoming of this combustion chamber is: grate area is excessive, coal is when adding in stove, the loose area of paving is excessive, and the coal combustion away from combustion centre is very insufficient, causes coal utilizaton rate to reduce; Fire door heat insulation effect is poor, and the heat that furnace heat sheds from fire door is more; The height laid at body of heater short transverse refractory brick is too low, making this stove become one burns while the stove of heat exchange, cold wind is bottom-up when flowing through body of heater, take away too much heat, stove combustion regional temperature is caused to reduce, make fuel combustion incomplete, cause chimney tail gas carbonomonoxide concentration very high.In addition, furnace outlet is larger, flue gas time of staying in burner hearth is shorter, the volatile ingredient (comprising tiny coal particle and combustibility gaseous material) that coal cinder produces when pyrolysis is failed to be fully burned and is just discharged burner hearth with flue gas in burner hearth, contain the most volatile ingredient of a large amount of unburned and unburnt tiny coal particle in flue gas, cause the increase of burner hearth coal consumption, thermal efficiency reduction; Operationally, special messenger be had toward burner hearth stoking, bothersome effort.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of burning more abundant, improving efficiency of combustion, reducing coal consumption, save trouble and labor there is the trapezoidal fire grate of V-type finedraw and the hot-blast stove of automatic stoking.
In order to solve the problems of the technologies described above, present invention employs following technical scheme:
A kind of have the trapezoidal fire grate of V-type finedraw and the hot-blast stove of automatic stoking, comprise body of heater, furnace roof, fire door, Hui Men, fire grate, combustion blower pipe and automatic coal feeding device, described fire door is arranged on the front upper of body of heater, and grey door is arranged on the front lower of body of heater;
Described body of heater is that metal foil rolls the cylindrical of welding formation; The inwall of body of heater is along the circumferential direction fixedly installed the refractory brick flange bracing ring of a loop configuration, and above refractory brick flange bracing ring, lay refractory brick along the inwall of body of heater make liner, the top of liner is concordant with the top of cylindrical furnace;
Described furnace roof is arranged on the top of body of heater, and in the side of furnace roof, welding flue exports as exhaust gases passes, and described exhaust gases passes outlet is a flaring mouth, at the opposite side welding heat exchanger bracing frame of furnace roof, furnace roof is also welded with multi-disc corrugated fin;
Described fire grate is made up of bottom fire grate, bracing ring and fire-gate side wall, bracing ring be arranged on fire-gate side wall top outer and with fire-gate side wall integral structure, bracing ring is fixed on the inwall of liner, and bottom fire grate is arranged on the bottom in fire-gate side wall; The longitudinal cross-section of described fire grate is trapezoidal shape, described bottom fire grate is made up of dull and stereotyped and grate, grate metal supporting frames is welded respectively along four limits in the inside bottom surface of fire-gate side wall, a draw-in groove is provided with in the centre of each grate metal supporting frames, arrange respectively and the draw-in groove bayonet lock one to one in grate metal supporting frames in the middle part of four limits of bottom fire grate, the bayonet lock on the fire grate of described bottom inserts in corresponding draw-in groove; Described flat board is near fire door; Described fire-gate side wall is arranged many V-type finedraws, this finedraw is narrow below upper face width, and V-type finedraw has angle perpendicular to fire-gate side wall base or with fire-gate side wall base;
The setting position of described fire door is higher than bottom fire grate, and the setting position of grey door is lower than bottom fire grate;
Described automatic coal feeding device comprises cylinder of delivering coal, spiral coal supply bar, pyramid type add coal bunker, buncher and guide plate; Described cylinder of delivering coal is fixedly installed on body of heater, cylinder of delivering coal communicates with in body of heater, described spiral coal supply bar is arranged on delivers coal in cylinder, one end of spiral coal supply bar is stretched in body of heater, the clutch end of described buncher is connected with the other end of spiral coal supply bar, described pyramid type adds the top that coal bunker is arranged on cylinder of delivering coal, on the inwall that one end of described guide plate is fixed on liner and below the outlet being positioned at cylinder of delivering coal, the other end of guide plate stretches to directly over the fire grate of bottom obliquely.
As a preferred embodiment of the present invention, described fire door is double-decker, outer layer plate, and internal layer is made by having certain thickness heat insulating refractory materials, and internal layer is close to stove gate internal face.
As another kind of preferred version of the present invention, automatic coal feeding device is arranged on the medium position of body of heater, and becomes an angle of 90 degrees with fire door, and position is higher than fire grate.
Compared with prior art, the hot-blast stove tool of a kind of trapezoidal fire grate and automatic stoking with V-type finedraw of the present invention has the following advantages:
1, trapezoidal shape fire grate structure is conducive to coal being concentrated on centre position burning, V-type finedraw is as secondary air inlet, enter from V-type finedraw volatile ingredient (comprising tiny coal particle and combustibility gaseous material) that air in combustion zone both can produce when pyrolysis for coal cinder to fire again oxygen is provided, can be used as again burnout degree for its after-flame provides oxygen, make coal combustion more abundant, and then improve coal combustion efficiency.Because coal mainly concentrates on position burning to the rear in the middle of fire grate, become flat board at the grate near fire door, make more air enter into middle burner hearth position to the rear, be conducive to fuel combustion complete.
2, fire door is double-decker, outer layer plate, internal layer is arranged has certain thickness heat insulating refractory materials, internal layer is close to stove gate internal face, the skin with seal washer links closely stove gate outside wall surface, the fire door of this sealing and good heat preservation performance, can prevent hot blast from shedding from fire door from fire door effusion and heat, reduce thermal loss rate.
3, liner made by the refractory brick of the larger height of inboard wall of furnace body laying, lay to the position contour with body of heater, stove can be made only to burn generation high-temperature flue gas, and be not passed through many heats to the cold air outside stove, become a real hot-blast stove, be conducive to stove combustion temperature to remain on a higher temperature like this, make fuel combustion abundant.
4, the exhaust gases passes outlet of flaring, can reduce the flow velocity of flue gas, is conducive to increasing the time of staying of flue gas in stove, makes it burn more abundant, improves efficiency of combustion.
5, automatic coal feeding device is adopted, without the need for special messenger toward burner hearth stoking, save trouble and labor.
Accompanying drawing explanation
Fig. 1 is a kind of front view with the trapezoidal fire grate of V-type finedraw and the hot-blast stove of automatic stoking;
Fig. 2 is the structural representation of furnace roof;
Fig. 3 is the structural representation of fire grate;
Fig. 4 is the top plan view of fire grate structure;
Fig. 5 is the structural representation of fire door;
Fig. 6 is the structural representation of guide plate.
In accompanying drawing: 1-spiral coal supply bar; 2-guide plate; 3-exhaust gases passes exports; 4-furnace roof; 5-fin; 6-heat exchanger bracing frame; 7-fire door; 8-fire grate; 9-refractory brick flange bracing ring; 10-grey door; 11-grate metal supporting frames; 12-body of heater; 13-combustion blower pipe; 14-liner; 15-buncher; 16-cylinder of delivering coal; 17-pyramid type adds coal bunker; 18-grate gap; 19-bracing ring; 20-grate; 21-V-type finedraw; 22-dull and stereotyped; 23-insulating; 24-iron plate layer.
Detailed description of the invention
As shown in Figure 1, a kind of have the trapezoidal fire grate of V-type finedraw and the hot-blast stove of automatic stoking, comprise body of heater 12, furnace roof 4, fire door 7, grey door 10, fire grate 8, combustion blower pipe 13 and automatic coal feeding device, fire door 7 is arranged on the front upper of body of heater 12, ash door 10 is arranged on the front lower of body of heater 12, and combustion blower pipe is arranged on the bottom of body of heater 12 and is positioned at below fire grate 8.
Body of heater 12 welds the cylindrical of formation for metal foil rolls, and at the bottom of bottom welding metal furnaces, weld seam is tight, smooth, and pore-free is air tight without slag inclusion.The inwall of body of heater 12 is along the circumferential direction fixedly installed the refractory brick flange bracing ring 9 of a loop configuration, above refractory brick flange bracing ring 9, lay refractory brick along the inwall of body of heater 12 make liner 14, the top of liner 14 is concordant with the top of cylindrical furnace 12.
Furnace roof 4 is arranged on the top of body of heater 12, at the side of furnace roof 4 welding flue as exhaust gases passes outlet 3, exhaust gases passes outlet is a flaring mouth, at the opposite side welding heat exchanger bracing frame 6 of furnace roof 4, furnace roof 4 is also welded with multi-disc corrugated fin 5, as shown in Figure 2.
Fire grate 8 is made up of bottom fire grate, bracing ring 19 and fire-gate side wall, as shown in Figure 3,4.Bracing ring 19 be arranged on fire-gate side wall top outer and with fire-gate side wall integral structure, all with fire clay manufacture, bottom fire grate is arranged on the bottom in fire-gate side wall.Bracing ring 19 is fixed on the inwall of liner 14, namely by circumferentially boring a circular support groove along refractory brick at liner 14, bracing ring is placed in support slot, gap fire clay is between the two applied, with this, fire grate 8 is fixed on liner 14.The longitudinal cross-section of fire grate 8 is trapezoidal shape, bottom fire grate is made up of dull and stereotyped 22 and grate 20, grate gap 18 is formed between grate 20, grate metal supporting frames 11 is welded respectively along four limits in the inside bottom surface of fire-gate side wall, a draw-in groove is provided with in the centre of each grate metal supporting frames 11, arrange respectively and the draw-in groove bayonet lock one to one in grate metal supporting frames 11 in the middle part of four limits of bottom fire grate, bayonet lock on the fire grate of bottom inserts in corresponding draw-in groove, move in direction all around to limit grate 20, can by bottom fire grate jack-up by grey door 10, through stove gate, bottom grate is taken out.Dull and stereotyped 22 near fire door 7, and fire-gate side wall is arranged many V-type finedraws, this V-type finedraw is narrow below upper face width, and V-type finedraw has angle perpendicular to fire-gate side wall base or with fire-gate side wall base.
The setting position of fire door 7 higher than bottom fire grate, the setting position of grey door 10 lower than bottom fire grate, the bottom of body of heater 12 and be positioned at below grate and form cinder chamber, the corresponding grey door 10 of cinder chamber.Fire door 7 is double-decker (iron plate layer 24 and insulating 23), as shown in Figure 5, outer layer plate, internal layer is made by having certain thickness heat insulating refractory materials (as alumina silicate fibre etc.), internal layer is close to stove gate internal face, and the skin with seal washer links closely fire door outside wall surface.
Automatic coal feeding device is arranged on the right side central position of body of heater 12, and with 7 one-tenth, fire door an angle of 90 degrees, position is higher than fire grate 8.Automatic coal feeding device comprises cylinder 16 of delivering coal, spiral coal supply bar 1, pyramid type add coal bunker 17, buncher 15 and guide plate 2.Cylinder 16 of delivering coal is fixedly installed on body of heater 12, cylinder 16 of delivering coal communicates with in body of heater 12, spiral coal supply bar 1 is arranged on delivers coal in cylinder 16, one end of spiral coal supply bar 1 is stretched in body of heater 12, the clutch end of buncher 15 is connected with the other end of spiral coal supply bar 1, and pyramid type adds the top that coal bunker 17 is arranged on cylinder 16 of delivering coal.The structure of guide plate 2 as shown in Figure 6, on the inwall that one end of guide plate 2 is fixed on liner 14 and below the outlet being positioned at cylinder 16 of delivering coal, the other end of guide plate 2 stretches to directly over the fire grate of bottom obliquely.Coal sends through spiral coal supply bar cylinder of delivering coal, then from guide plate to downslide, the drop point of coal is just grate centre position, fire grate burns, air is drawn into the cinder chamber below fire grate by air blast, then enters into combustion zone, contacts make it burn with the coal on fire grate; The flue gas produced after coal combustion, flows out from exhaust gases passes opening.
Automatic coal feeding device has PLC control system, and the control of automatic stoking mainly controls according to the temperature in barn.Draw temperature curve by the temperature of automatically monitoring in barn, Correct Analysis goes out the time of coal.When the temperature of the actual temperature in barn lower than default, automatic coal feeding device starts to start coal, and before automatic coal feeding device is opened, first 5 ~ 10 seconds unlatching air blasts in advance.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (3)
1. one kind has the trapezoidal fire grate of V-type finedraw and the hot-blast stove of automatic stoking, comprise body of heater (12), furnace roof (4), fire door (7), grey door (10), fire grate (8) and combustion blower pipe (13), described fire door (7) is arranged on the front upper of body of heater (12), ash door (10) is arranged on the front lower of body of heater (12), it is characterized in that: also comprise automatic coal feeding device;
Described body of heater (12) welds the cylindrical of formation for metal foil rolls; The inwall of body of heater (12) is along the circumferential direction fixedly installed the refractory brick flange bracing ring (9) of a loop configuration, lay refractory brick in the top of refractory brick flange bracing ring (9) along the inwall of body of heater (12) and make liner (14), the top of liner (14) is concordant with the top of cylindrical furnace (12);
Described furnace roof (4) is arranged on the top of body of heater (12), at the side of furnace roof (4) welding flue as exhaust gases passes outlet (3), described exhaust gases passes outlet is a flaring mouth, at the opposite side welding heat exchanger bracing frame (6) of furnace roof (4), furnace roof (4) is also welded with multi-disc corrugated fin (5);
Described fire grate (8) is made up of bottom fire grate, bracing ring (19) and fire-gate side wall, bracing ring (19) be arranged on fire-gate side wall top outer and with fire-gate side wall integral structure, bracing ring (19) is fixed on the inwall of liner (14), and bottom fire grate is arranged on the bottom in fire-gate side wall; The longitudinal cross-section of described fire grate (8) is trapezoidal shape, described bottom fire grate is made up of dull and stereotyped (22) and grate (20), grate metal supporting frames (11) is welded respectively along four limits in the inside bottom surface of fire-gate side wall, a draw-in groove is provided with in the centre of each grate metal supporting frames (11), arrange respectively and the draw-in groove bayonet lock one to one in grate metal supporting frames (11) in the middle part of four limits of bottom fire grate, bayonet lock on the fire grate of described bottom inserts in corresponding draw-in groove, and described flat board (22) is near fire door (7); Described fire-gate side wall is arranged many V-type finedraws, this finedraw is narrow below upper face width, and V-type finedraw has angle perpendicular to fire-gate side wall base or with fire-gate side wall base;
The setting position of described fire door (7) is higher than bottom fire grate, and the setting position of grey door (10) is lower than bottom fire grate;
Described automatic coal feeding device comprises cylinder of delivering coal (16), spiral coal supply bar (1), pyramid type add coal bunker (17), buncher (15) and guide plate (2), described cylinder of delivering coal (16) is fixedly installed on body of heater (12), cylinder (16) of delivering coal communicates with in body of heater (12), described spiral coal supply bar (1) is arranged in cylinder of delivering coal (16), one end of spiral coal supply bar (1) is stretched in body of heater (12), the clutch end of described buncher (15) is connected with the other end of spiral coal supply bar (1), described pyramid type adds the top that coal bunker (17) is arranged on cylinder of delivering coal (16), on the inwall that one end of described guide plate (2) is fixed on liner (14) and below the outlet being positioned at cylinder of delivering coal (16), the other end of guide plate (2) stretches to directly over the fire grate of bottom obliquely.
2. a kind of according to claims 1 has the trapezoidal fire grate of V-type finedraw and the hot-blast stove of automatic stoking, it is characterized in that: described fire door (7) is double-decker, outer layer plate, internal layer is made by having certain thickness heat insulating refractory materials, and internal layer is close to stove gate internal face.
3. a kind of according to claims 1 has the trapezoidal fire grate of V-type finedraw and the hot-blast stove of automatic stoking, it is characterized in that: described automatic coal feeding device is arranged on the medium position of body of heater (12), and becoming an angle of 90 degrees with fire door (7), position is higher than fire grate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410580606.7A CN104296151B (en) | 2014-10-27 | 2014-10-27 | A kind of have trapezoidal fire grate and the hot-blast stove of automatic stoking that V-type is carefully stitched |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410580606.7A CN104296151B (en) | 2014-10-27 | 2014-10-27 | A kind of have trapezoidal fire grate and the hot-blast stove of automatic stoking that V-type is carefully stitched |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104296151A true CN104296151A (en) | 2015-01-21 |
| CN104296151B CN104296151B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410580606.7A Expired - Fee Related CN104296151B (en) | 2014-10-27 | 2014-10-27 | A kind of have trapezoidal fire grate and the hot-blast stove of automatic stoking that V-type is carefully stitched |
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| CN (1) | CN104296151B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105460925A (en) * | 2015-12-28 | 2016-04-06 | 神华集团有限责任公司 | Graphitizing furnace liner structure |
| CN113040238A (en) * | 2021-03-22 | 2021-06-29 | 福建省国晟义发生态茶业有限公司 | Making process of rice dumpling leaf flavor narcissus tea |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59205543A (en) * | 1983-05-06 | 1984-11-21 | Toshiba Heating Appliances Co | Burner |
| CN101526265A (en) * | 2008-07-29 | 2009-09-09 | 珠海慧生能源技术发展有限公司 | Biomass fuel hot air stove |
| CN201628381U (en) * | 2010-04-27 | 2010-11-10 | 龙井市罗亚君农副产品加工有限公司 | Straw pallet burning hot blast furnace |
| CN204084410U (en) * | 2014-10-27 | 2015-01-07 | 重庆大学 | A kind of have the trapezoidal fire grate of V-type finedraw and the hot-blast stove device of automatic stoking |
-
2014
- 2014-10-27 CN CN201410580606.7A patent/CN104296151B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59205543A (en) * | 1983-05-06 | 1984-11-21 | Toshiba Heating Appliances Co | Burner |
| CN101526265A (en) * | 2008-07-29 | 2009-09-09 | 珠海慧生能源技术发展有限公司 | Biomass fuel hot air stove |
| CN201628381U (en) * | 2010-04-27 | 2010-11-10 | 龙井市罗亚君农副产品加工有限公司 | Straw pallet burning hot blast furnace |
| CN204084410U (en) * | 2014-10-27 | 2015-01-07 | 重庆大学 | A kind of have the trapezoidal fire grate of V-type finedraw and the hot-blast stove device of automatic stoking |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105460925A (en) * | 2015-12-28 | 2016-04-06 | 神华集团有限责任公司 | Graphitizing furnace liner structure |
| CN113040238A (en) * | 2021-03-22 | 2021-06-29 | 福建省国晟义发生态茶业有限公司 | Making process of rice dumpling leaf flavor narcissus tea |
| CN113040238B (en) * | 2021-03-22 | 2024-03-08 | 福建省国晟义发生态茶业有限公司 | Making process of Narcissus tea with rice dumpling leaf taste |
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| CN104296151B (en) | 2016-08-24 |
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