CN205859994U - The air stove of grain drying tower - Google Patents

Abstract

This utility model relates to the air stove of a kind of grain drying tower, belongs to a kind of air stove.Burner is connected with the interface of the main chamber of body of heater, face arch is had in the main chamber on this interface top, secondary blast pipe is buried underground bottom main chamber, secondary blast pipe upper berth insulating, insulating has the high-temperature flame-proof bed of material, three times wind pushing box is positioned at bottom main chamber, tertiary-air pipe is connected with three wind pushing box, horizontally set rear arch between main chamber and smoke combustion room, root at rear arch arranges dedusting auger with furnace bottom junction, bottom heavy ash room, cleaning door is set, main chamber has observation panel two, it is provided with pressure transducer in smoke combustion room, it is provided with temperature sensor at Yan Qiao.Advantage is novel structure, changes combustion system so that it is combustion velocity is fast, and burn-off rate can reach more than 97%, and its thermal efficiency brings up to about 95%.

Description

The air stove of grain drying tower

Technical field

This utility model belongs to a kind of air stove, refers in particular to the air stove of grain drying tower.

Background technology

At present, the drying air stove used by grain drying tower is chain-type air stove, but the thermal efficiency of chain air stove is only Reaching about 70%, carbon residue about 15% in ash, coal burn-off rate is low, to currently used grain drying tower, because its boiler room is tied Structure is fixed, and it is carried out big change the most difficult.

Summary of the invention

This utility model provides the air stove of a kind of grain drying tower, to solve the coal after-flame that former chain air stove exists Rate is low, the problem that efficiency of combustion is low.

This utility model adopts the technical scheme that: includes refractory brick body of heater, body of heater channel-section steel skeleton, top heat-insulation layer, sinks There is firebreak ash indoor, arrange an observation panel one between firebreak and cigarette bridge, arrange cleaning door, burner bottom heavy ash room It is connected with the interface of the main chamber of body of heater, in the main chamber on this interface top, has face arch, bottom main chamber, bury secondary underground Ajutage, secondary blast pipe upper berth insulating, insulating has the high-temperature flame-proof bed of material, three times wind pushing box is positioned at master Bottom of combustion chamber, tertiary-air pipe is connected with three wind pushing box, horizontally set rear arch between main chamber and smoke combustion room, The root of rear arch and furnace bottom junction arrange dedusting auger, arrange cleaning door bottom heavy ash room, and main chamber has observation panel two, It is provided with pressure transducer in smoke combustion room, is provided with temperature sensor at Yan Qiao；

The structure of burner described in the utility model is: one time ajutage is attached with coal dust shower nozzle by flange, coal Powder shower nozzle is fixing with maintenance door to be connected, and maintenance door is connected with burner body by folding, handwheel, screw telescopic bar, water conservancy diversion leaf Wheel and air deflector link together and are installed in coal dust shower nozzle, and burner body from-inner-to-outer is high-temperature flame-proof layer and water respectively Cooling layer, water pump is positioned in water tank, and this water pump is connected with water-cooled layer by water pipe, and secondary blast pipe is connected with burner body, wind To the internal fixing oral area being connected and being positioned at secondary blast pipe of deflector and burner body, diesel oil ignitor is positioned at igniting The outside in hole.

The utility model has the advantages that novel structure, change combustion system so that it is combustion velocity is fast, and burn-off rate can Reaching more than 97%, its thermal efficiency brings up to about 95%, it is also possible to utilize the furnace binding of former chain air stove, not to former heat On the basis of wind furnace is changed greatly, change combustion system so that it is combustion velocity is fast, is saved greatly and puts into into This.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the A-A sectional view of Fig. 1；

Fig. 3 is the B-B sectional view of Fig. 1；

Fig. 4 is the structural representation of this utility model burner.

Detailed description of the invention

Including refractory brick body of heater 4, body of heater channel-section steel skeleton 5, top heat-insulation layer 15, in heavy ash room 18, there are firebreak 12, gear fire One observation panel 1 is set between wall 12 and cigarette bridge 19, cleaning door 14, burner 1 and body of heater 4 are set bottom heavy ash room The interface 20 of main chamber 16 connects, and has face arch 2 in the main chamber 16 on this interface top, and bottom main chamber, 7 bury secondary underground Ajutage 21, secondary blast pipe 21 upper berth insulating 8, insulating 8 has the high-temperature flame-proof bed of material 6, three air-supplies Case 23 is positioned at bottom main chamber, and tertiary-air pipe 22 is connected with three wind pushing box, main chamber 16 and smoke combustion room 17 it Between horizontally set rear arch 3, dedusting auger 9 is set in root and the furnace bottom junction of rear arch 3, cleaning door is set bottom heavy ash room 14, main chamber has observation panel 2 24, is provided with pressure transducer 10 in smoke combustion room 17, is provided with temperature sensor at cigarette bridge 19 11；

The structure of described burner 1 is: one time ajutage 1012 is attached with coal dust shower nozzle 102 by flange 107, coal Powder shower nozzle 102 is fixing with maintenance door 104 to be connected, and maintenance door 104 is connected with burner body 106 by folding, handwheel 108, spiral shell Stricture of vagina expansion link 109, impeller inducer 101 and air deflector 1010 link together and are installed in coal dust shower nozzle 102, burner body 106 from-inner-to-outers are high-temperature flame-proof layer 1015 and water-cooled layer 1016 respectively, and water pump 1018 is positioned in water tank 1013, this water pump 1018 Being connected with water-cooled layer 1016 by water pipe 1017, secondary blast pipe 105 is connected with burner body 106, wind deflector 1014 The fixing oral area that be connected and be positioned at secondary blast pipe 105 internal with burner body 106, diesel oil ignitor 1011 is positioned at a little The outside of fire hole 103.

Operation principle: wind powder mixture is spurted in coal dust shower nozzle, by impeller inducer and water conservancy diversion by an ajutage Shunt after device and mix with secondary blast, controlling handwheel and drive the movement of screw telescopic bar to keep impeller inducer and air deflector Position, thus control the swirl strength of wind powder mixture, thus regulate the mixing of primary and secondary air, make wind powder mix homogeneously with And the enough pulverized coal particle suspension stay time, after diesel oil ignitor is lighted, flame penetrates along high-temperature flame-proof layer rotation spray, Water pump, by the water pump of water tank to water-cooled layer, is reduced the temperature of high-temperature flame-proof layer, it is ensured that the peace of burner by the recirculated water of water-cooled layer Complete stable；Face arch sprays forward to push down flame, horizontally set rear arch between main chamber and smoke combustion room, to be combusted surely After Ding, start tertiary air, and progressively strengthen First air, secondary wind and tertiary air and carry out stable burning, produced high-temperature flue gas Return into smoke combustion room by rear arch, enter cigarette bridge by heavy ash room, heavy stay the lime-ash under rear arch and can start ash disposal strand at any time Dragon, with removing, the lime-ash bottom heavy ash room, can be removed by cleaning door when blowing out, be indicated by pressure transducer, adjust in time Joint secondary wind and the controlling potential device of tertiary air, controlled air output, can control flame combustion state easily, be passed by temperature Sensor indicates, the controlling potential device of regulation coal pulverizer, controls coal supply amount, can control chamber temperature and heating load easily.

Claims (2)

1. an air stove for grain drying tower, including refractory brick body of heater, body of heater channel-section steel skeleton, top heat-insulation layer, heavy ash is indoor There is firebreak, an observation panel one be set between firebreak and cigarette bridge, cleaning door is set bottom heavy ash room, it is characterised in that: Burner is connected with the interface of the main chamber of body of heater, has face arch, bury bottom main chamber in the main chamber on this interface top If secondary blast pipe, secondary blast pipe upper berth insulating, insulating has the high-temperature flame-proof bed of material, three wind pushing box Being positioned at bottom main chamber, tertiary-air pipe is connected with three wind pushing box, horizontally set between main chamber and smoke combustion room Rear arch, arranges dedusting auger in root and the furnace bottom junction of rear arch, arranges cleaning door bottom heavy ash room, and main chamber has sight Examine mouth two, be provided with pressure transducer in smoke combustion room, be provided with temperature sensor at Yan Qiao.

The air stove of a kind of grain drying tower the most according to claim 1, it is characterised in that: the structure of described burner It is: one time ajutage is attached with coal dust shower nozzle by flange that coal dust shower nozzle is fixing with maintenance door to be connected, and maintenance door is by folding Page is connected with burner body, and handwheel, screw telescopic bar, impeller inducer and air deflector link together and be installed on coal dust shower nozzle In, burner body from-inner-to-outer is high-temperature flame-proof layer and water-cooled layer respectively, and water pump is positioned in water tank, this water pump by water pipe with Water-cooled layer connects, and secondary blast pipe is connected with burner body, and fix internal with burner body of wind deflector is connected and position In the oral area of secondary blast pipe, diesel oil ignitor is positioned at the outside of fire hole.