CN2512572Y - Powder coal combustion device of double drum pitch concrete stirrer - Google Patents
Powder coal combustion device of double drum pitch concrete stirrer Download PDFInfo
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- CN2512572Y CN2512572Y CN 02223223 CN02223223U CN2512572Y CN 2512572 Y CN2512572 Y CN 2512572Y CN 02223223 CN02223223 CN 02223223 CN 02223223 U CN02223223 U CN 02223223U CN 2512572 Y CN2512572 Y CN 2512572Y
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Abstract
The utility model relates to a powder coal combustion device of double drum pitch concrete stirrer which is characterized in that a thrice air conduit 5 is arranged at a furnace body 4 and communicated with the cavity of a hearth 6, and the outlet 10 of the thrice air conduit 5 is extended through the wall of the hearth 6; The sandstone unloading chute 7 is arranged at the top of a fire outlet 8 of the hearth 6, and the fire outlet 8 of the hearth 6 and the unloading outlet 12 of the sandstone unloading chute 7 are communicated with the feed opening of a drying roller, the fire outlet 8 of the hearth 6 takes a chamfering segmental round shape; the outlets 10 of one to four thrice air conduits are arranged at the internal wall of the hearth 6; and the distance from outlet of the thrice air conduit to the end face 11 of the fire outlet 8 is smaller than or equated to two third of the hearth 6. The utility model is used in the powder coal combustion device of double drum pitch concrete stirrer, reduc9ing the operating cost of the stirrer. The clinker formed by the burned powder coal in the hearth is little and takes an incompact shape; moreover, the clinker is unable to hang to the hearth, easy to be cleaned.
Description
Technical field:
The utility model relates to a kind of twin-roll bituminous concrete mixer coal powder burner.
Background technology:
The heater of twin-roll bituminous concrete mixer generally adopts oil burner.The application of pulverized coal combustion is also not general, because chamber structure is unreasonable, coal dust firing is incomplete, behind the coal dust firing slagging scorification serious, stop up the air channel, damage burner hearth.Reasonably chamber structure is that coal powder burner is applied in one of key technology on the twin-roll bituminous concrete mixer.In the prior art, a kind of mobile bitumen concrete mixer coal powder burner is arranged, the structure of its burner hearth as shown in Figure 1, 2, burner hearth 6 main bodys are cylinders, burner hearth is taper by crater 13 1 ends, and the diameter of crater 13 end faces only is the 1/2-1/3 of burner hearth 6 body cross-section diameters.Burner hearth 6 walls in axial direction are provided with multi-turn, every circle has a plurality of tertiary airs road outlet 10.Tertiary air road outlet 10 is arranged along vertical burner hearth 6 wall directions.This structure is because the cross-sectional area of the crater 13 of burner hearth 6 is less relatively, and it is not smooth to cause burner hearth 6 inner chamber air to flow, and coal dust firing is incomplete, causes burner hearth 6 inwall slagging scorification easily, stops up tertiary air road junction 10.In the prior art, also have a kind of continuous asphalt mixer coal powder burner, the structure of its burner hearth 6 is shown in Fig. 3,4, and burner hearth 6 is the through type cylinder, the crater 13 of burner hearth 6 does not shrink, and the cross section of crater 13 end faces equates with the cross-sectional area of burner hearth 6 main bodys.Burner hearth 6 walls in axial direction are provided with multi-turn, every circle has a plurality of tertiary airs road junction 10.Tertiary air road junction 10 is arranged along vertical burner hearth 6 wall directions.The coal powder burner of this structure, improved the situation of coal dust firing, still, its crater 13 part-structures are oversize, can not rationally cooperate with twin-roll bituminous concrete mixer sandstone material material passing passage, thereby can't on twin-roll pitch mixer, use.
Summary of the invention:
The purpose of the utility model patent is to provide a kind of twin-roll bituminous concrete mixer coal powder burner, this coal powder burner can be complementary with the drying roller structure of twin-roll bituminous concrete mixer, can further solve the assembly problem of feeding-passage again, in twin-roll bituminous concrete mixer burner, realize replace oil with coal, save the fuel cost of mixer, reduce the operating cost of mixer.
In order to achieve the above object, the technical solution of the utility model is following design:
A kind of twin-roll bituminous concrete mixer coal powder burner comprises body of heater, burning torch, wind powder pipe, secondary air duct, tertiary air road, burner hearth, sandstone material punishment in advance chute, crater, the outlet of tertiary air road; Burning torch, wind powder pipe, secondary air duct, tertiary air road are installed on the body of heater, and are connected with burner hearth cavity, and the outlet in tertiary air road runs through hearth wall; Sandstone material punishment in advance chute is installed in the top of the crater of burner hearth, the punishment in advance outlet of the crater of burner hearth, sandstone material punishment in advance chute and the feeding inlet of drying roller, it is characterized in that: the crater of burner hearth lacks circular for cutting sth. askew, the round inclined-plane of cutting sth. askew becomes 15-45 ° of angle with the burner hearth axis, 1-4 tertiary air road outlet is distributed in the inwall of burner hearth, and the distance that the tertiary air road is exported to the end face of crater is less than or equal to 2/3 of burner hearth length.
Described a kind of twin-roll bituminous concrete mixer coal powder burner is characterized in that: the outlet of tertiary air road is 30-60 ° of angle with the angle of tangent to periphery, the outlet of tertiary air road and 20-40 ° of angle of axis inclination.
Described a kind of twin-roll bituminous concrete mixer coal powder burner is characterized in that: the outlet of tertiary air road is 40-50 ° with the angle preferred value of tangent to periphery, and the outlet of tertiary air road is 25-35 ° with the axis angle preferred value.
Described a kind of twin-roll bituminous concrete mixer coal powder burner is characterized in that: the outlet of tertiary air road is 45 ° with the angle preferred value of tangent to periphery, and tertiary air road outlet (10) is 30 ° with the axis angle preferred value.
Described a kind of twin-roll bituminous concrete mixer coal powder burner is characterized in that; The scarce round action of the end face of the crater of burner hearth is 0.5-0.7 a times of burner hearth main body inner chamber radius, and the angle of cut sth. askew round inclined-plane and axis is less than or equal to the base plate of punishment in advance chute and the angle of axis.
Twin-roll bituminous concrete mixer coal powder burner described in the utility model, be the special-purpose assorted parts of twin-roll bituminous concrete mixer, its major function: the one, allow the sandstone material of mixer pass through from its punishment in advance chute, enter the oven dry tube of mixer; The 2nd, the heat that produces after the coal dust completing combustion is offered mixer, the moisture that the baked sand building stones are contained also is heated to suitable temperature to the sandstone material.
Described a kind of twin-roll bituminous concrete mixer coal powder burner duty is such: torch oil gun sprays in burner hearth after diesel oil and the ignition, and coal dust is transported in the burner hearth by wind powder pipe and is ignited and smooth combustion.After coal dust was ignited, oil gun stopped oil spout.The required secondary wind of coal dust firing enters burner hearth through secondary air duct, and tertiary air then enters burner hearth from the tertiary air road.Under the acting in conjunction of secondary wind and tertiary air, coal dust mixes with air in burner hearth, can stablize and burning fully, the high-temperature flue gas that burning is produced is from lacking the drying roller that the circle crater sprays into mixer, meanwhile, the sandstone material then enters mixer by the discharging opening that burner hearth lacks circle crater top punishment in advance chute, and the sandstone material is preheated through the punishment in advance chute time, enter drying roller after the burned high-temperature flue gas that produces continue heating.
The scarce toroidal cross section of burner hearth crater end chamfered portion is diminishing along axis direction.Cutting the part bottom surface is the plane of an inclination 15-45 ° angle, design has two purposes like this, the one, in order to form a reducing at burner hearth crater place, make the gaseous mixture in the burner hearth near the burner hearth crater, produce backflow, guarantee that air fully contacts with coal dust, make further fully burning of coal dust.The 2nd, guaranteed that burner hearth has bigger cavity, for the mixer of a certain model, the furnace cavity volume is big more, helps the completing combustion of coal dust more.And the crater size of burner hearth must be complementary with the size of the drying roller of mixer, like this, guaranteeing that the cross-sectional diameter of burner hearth main part is relatively large under the prerequisite that burner hearth crater cross section and drying roller are complementary, thereby obtaining bigger furnace cavity.The 3rd, in order to be complementary with sandstone material punishment in advance chute structure.For guaranteeing that the sandstone material passes through smoothly, the base plate of sandstone material punishment in advance chute has certain angle of inclination.The inclined-plane of burner hearth crater end chamfered portion is just in time suitable with the inclined floor of sandstone material punishment in advance chute.
Crater to the inboard wall of burner hearth of burner hearth axial centerline section is distributed with 1-4 tertiary air road outlet.These air channels and tangent to periphery and axis certain angle that tilts respectively can make tertiary air rotate consumingly to the crater volume and blow, like this, even coal dust moves near the burner hearth crater, still can fully mix and completing combustion with air, improve the utilization rate of fuel, reduce fuel cost.
In sum, the utlity model has following advantage:
1, present, twin-roll bituminous concrete mixer all is to adopt diesel oil, heavy oil etc. for fuel, does not also have the practical and effective coal powder burner.Coal powder burner described in the utility model is used for twin-roll bituminous concrete mixer, realizes replace oil with coal, is fit to the abundant national conditions of China's coal resource, and the fuel cost that can save mixer greatly reduces mixer operating cost.Because rich coal resources in China, replace oil with coal acts as a fuel and can reduce fuel cost greatly, thereby coal powder burner described in the utility model is applied on the bituminous concrete mixer and had market prospects preferably
2, the burner hearth of its special construction makes coal dust can access stable and fully burning; The lime-ash that forms behind the coal dust firing in the burner hearth is few, is loose shape, can not be easy to cleaning attached on the furnace wall.
3, the scarce circle crater burner hearth of cutting sth. askew of twin-roll bituminous concrete mixer coal powder burner uniqueness described in the utility model has the circular cross-section inner chamber, the combustion space that reasonable abundance is arranged, can allow coal dust that enough time of staying are arranged in burner hearth, form good burning condition, guarantee coal dust completing combustion stably; Cutting sth. askew of it lacks the temperature that the circle crater can control and regulate furnace outlet flue gas on the one hand, avoid causing and in burner hearth, produce liquid cinder, on the other hand, cutting sth. askew lacks the material space of crossing that the arcuate section that is cut above the circle crater forms twin-roll bituminous concrete mixer sandstone aggregate, has satisfied the needs of twin-roll pitch mixer operating mode well.Hearth wall partly is provided with the tertiary air road outlet with certain angle of inclination, imports air from the outlet of tertiary air road, makes the air in the burner hearth sufficient more, and air is more abundant with mixing of coal dust, further improves the utilization rate of coal dust.
Description of drawings
Fig. 1 is the axial cutaway view of taper crater burner hearth of the coal powder burner of mobile bitumen concrete mixer in the prior art
Fig. 2 is the A-A cutaway view of Fig. 1
Fig. 3 is the axial cutaway view of through type burner hearth of the coal powder burner of continuous bituminous concrete mixer in the prior art
Fig. 4 is the B-B cutaway view of Fig. 3
Fig. 5 is the axial cutaway view of the coal powder burner of the utility model embodiment
Fig. 6 is that K is to view
Fig. 7 is the chamber structure schematic diagram of Fig. 5
Fig. 8 is the D-D cutaway view of Fig. 7
Fig. 9 is the E-E cutaway view of Fig. 8
The parts title of each label representative is as follows in the accompanying drawing;
1, burning torch 2, wind powder pipe 3, secondary air duct
4, body of heater 5, tertiary air road 6, burner hearth
7, sandstone material punishment in advance chute 8, crater 9, the round inclined-plane of cutting sth. askew
10, tertiary air road outlet 11, cut sth. askew scarce circle crater end face 12, chute discharging opening
13, circular cone crater 14, drying roller 15, chute base plate
The angle of the angle b of a, the outlet of tertiary air road and axis, the outlet of tertiary air road and tangent to periphery
The specific embodiment
Embodiment one
A kind of twin-roll bituminous concrete mixer coal powder burner that present embodiment is introduced, according to Fig. 5-9, its structure comprises body of heater 4, burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5, burner hearth 6, sandstone material punishment in advance chute 7, crater 8, tertiary air road outlet 10.Burner hearth 6 is built by laying bricks or stones by the refractory brick of the special shaping of polylith and is formed, and the special refractory brick of whole burner hearth 6 usefulness piecemeals is built by laying bricks or stones, and the interface that each piece refractory brick is connected has all been done the mutual snap-in of tongue and groove, and seam also will be made filler with fire clay and apply plug with adhesion when building by laying bricks or stones.Burner hearth 6 totally be rendered as cylindrical shape, right-hand member top becomes 30 ° of oblique parts that cut in angle with axis, form one and lack the circle crater.As seen from the figure, the scarce round shape cross section of the crater 8 end chamfered portion of burner hearth 6 is diminishing along crater 8 directions.Cut the part bottom surface and be one relatively with the round inclined-plane 9 of cutting sth. askew of 30 ° of burner hearth 6 axis inclinations.Sandstone material punishment in advance chute 7 is installed in the top of the crater 8 of burner hearth 6, and its position is suitable with the round inclined-plane 9 of cutting sth. askew.Burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5 are installed on the body of heater 4, and with burner hearth 6 intracavity inter-connections.The outlet 10 in tertiary air road 5 runs through burner hearth 6 walls.The punishment in advance outlet 12 of the crater 8 of burner hearth 6, sandstone material punishment in advance chute 7 and the feeding inlet of drying roller.The crater 8 of burner hearth 6 lacks circular for cutting sth. askew, have 1 tertiary air road outlet 10 to be distributed in the inwall of burner hearth 6, and tertiary air road outlet 10 to the distance of the end face 11 of crater 8 equals 1/2 of burner hearth 6 length.The outlet 10 of tertiary air road is 45 ° with the angle b of tangent to periphery, and the outlet 10 of tertiary air road is 30 ° with axis angle a.The scarce round action of the end face 11 of the crater 8 of burner hearth 6 is 0.5 times of burner hearth 6 main body inner chamber radiuses, and the angle of cut sth. askew round inclined-plane 9 and axis equals the base plate 8 of punishment in advance chute 7 and the angle of axis, all is 30 °.
Embodiment two
A kind of twin-roll bituminous concrete mixer coal powder burner that present embodiment is introduced, according to Fig. 5-9, its structure comprises body of heater 4, burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5, burner hearth 6, sandstone material punishment in advance chute 7, crater 8, tertiary air road outlet 10.Burner hearth 6 is built by laying bricks or stones by the refractory brick of the special shaping of polylith and is formed, and the special refractory brick of whole burner hearth 6 usefulness piecemeals is built by laying bricks or stones, and the interface that each piece refractory brick is connected has all been done the mutual snap-in of tongue and groove, and seam also will be made filler with fire clay and apply plug with adhesion when building by laying bricks or stones.Burner hearth 6 totally be rendered as cylindrical shape, right-hand member top becomes 38 ° of oblique parts that cut in angle with axis, form one and lack the circle crater.As seen from the figure, the scarce round shape cross section of the crater 8 end chamfered portion of burner hearth 6 is diminishing along crater 8 directions.Cut the part bottom surface and be one relatively with the round inclined-plane 9 of cutting sth. askew of 38 ° of burner hearth 6 axis inclinations.Sandstone material punishment in advance chute 7 is installed in the top of the crater 8 of burner hearth 6, and its position is suitable with the round inclined-plane 9 of cutting sth. askew.Burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5 are installed on the body of heater 4, and with burner hearth 6 intracavity inter-connections.The outlet 10 in tertiary air road 5 runs through burner hearth 6 walls.The punishment in advance outlet 12 of the crater 8 of burner hearth 6, sandstone material punishment in advance chute 7 and the feeding inlet of drying roller.The crater 8 of burner hearth 6 is to cut sth. askew and lacks circularly, has 2 tertiary air roads outlets 10 to be distributed in the inwall of burner hearth 6, and 2 tertiary air road outlets 10 to the distance of the end face 11 of crater 8 equals 1/2,1/3 of burner hearth 6 length respectively.The outlet 10 of tertiary air road is 50 ° with the angle b of tangent to periphery, and the outlet 10 of tertiary air road is 35 ° with axis angle a.The scarce round action of the end face 11 of the crater 8 of burner hearth 6 is 0.6 times of burner hearth 6 main body inner chamber radiuses, and the angle of cut sth. askew round inclined-plane 9 and axis equals 38 °, and the base plate 8 of punishment in advance chute 7 is 40 ° with the angle of axis.
Embodiment three
A kind of twin-roll bituminous concrete mixer coal powder burner that present embodiment is introduced, according to Fig. 5-9, its structure comprises body of heater 4, burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5, burner hearth 6, sandstone material punishment in advance chute 7, crater 8, tertiary air road outlet 10.Burner hearth 6 is built by laying bricks or stones by the refractory brick of the special shaping of polylith and is formed, and the special refractory brick of whole burner hearth 6 usefulness piecemeals is built by laying bricks or stones, and the interface that each piece refractory brick is connected has all been done the mutual snap-in of tongue and groove, and seam also will be made filler with fire clay and apply plug with adhesion when building by laying bricks or stones.Burner hearth 6 totally be rendered as cylindrical shape, right-hand member top becomes 40 ° of oblique parts that cut in angle with axis, form one and lack the circle crater.As seen from the figure, the scarce round shape cross section of the crater 8 end chamfered portion of burner hearth 6 is diminishing along crater 8 directions.Cut the part bottom surface and be one relatively with the round inclined-plane 9 of cutting sth. askew of 40 ° of burner hearth 6 axis inclinations.Sandstone material punishment in advance chute 7 is installed in the top of the crater 8 of burner hearth 6, and its position is suitable with the round inclined-plane 9 of cutting sth. askew.Burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5 are installed on the body of heater 4, and with burner hearth 6 intracavity inter-connections.The outlet 10 in tertiary air road 5 runs through burner hearth 6 walls.The punishment in advance outlet 12 of the crater 8 of burner hearth 6, sandstone material punishment in advance chute 7 and the feeding inlet of drying roller.The crater 8 of burner hearth 6 is to cut sth. askew and lacks circularly, has 3 tertiary air roads outlets 10 to be distributed in the inwall of burner hearth 6, and 3 tertiary air road outlets 10 to the distance of the end face 11 of crater 8 equals 2/3,1/2,1/3 of burner hearth 6 length respectively.The outlet 10 of tertiary air road is 60 ° with the angle b of tangent to periphery, and the outlet 10 of tertiary air road is 40 ° with axis angle a.The scarce round action of the end face 11 of the crater 8 of burner hearth 6 is 0.7 times of burner hearth 6 main body inner chamber radiuses, and the angle of cut sth. askew round inclined-plane 9 and axis equals 40 °, and the base plate 8 of punishment in advance chute 7 is 45 ° with the angle of axis.
Embodiment four
A kind of twin-roll bituminous concrete mixer coal powder burner that present embodiment is introduced, according to Fig. 5-9, its structure comprises body of heater 4, burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5, burner hearth 6, sandstone material punishment in advance chute 7, crater 8, tertiary air road outlet 10.Burner hearth 6 is built by laying bricks or stones by the refractory brick of the special shaping of polylith and is formed, and the special refractory brick of whole burner hearth 6 usefulness piecemeals is built by laying bricks or stones, and the interface that each piece refractory brick is connected has all been done the mutual snap-in of tongue and groove, and seam also will be made filler with fire clay and apply plug with adhesion when building by laying bricks or stones.Burner hearth 6 totally be rendered as cylindrical shape, right-hand member top becomes 25 ° of oblique parts that cut in angle with axis, form one and lack the circle crater.As seen from the figure, the scarce round shape cross section of the crater 8 end chamfered portion of burner hearth 6 is diminishing along crater 8 directions.Cut the part bottom surface and be one relatively with the round inclined-plane 9 of cutting sth. askew of 25 ° of burner hearth 6 axis inclinations.Sandstone material punishment in advance chute 7 is installed in the top of the crater 8 of burner hearth 6, and its position is suitable with the round inclined-plane 9 of cutting sth. askew.Burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5 are installed on the body of heater 4, and with burner hearth 6 intracavity inter-connections.The outlet 10 in tertiary air road 5 runs through burner hearth 6 walls.The punishment in advance outlet 12 of the crater 8 of burner hearth 6, sandstone material punishment in advance chute 7 and the feeding inlet of drying roller.The crater 8 of burner hearth 6 is to cut sth. askew and lacks circularly, has 4 tertiary air roads outlets 10 to be distributed in the inwall of burner hearth 6, and 4 tertiary air road outlets 10 to the distance of the end face 11 of crater 8 equals 2/3,8/15,1/3,1/5 of burner hearth 6 length respectively.The outlet 10 of tertiary air road is 40 ° with the angle b of tangent to periphery, and the outlet 10 of tertiary air road is 25 ° with axis angle a.The scarce round action of the end face 11 of the crater 8 of burner hearth 6 is 0.65 times of burner hearth 6 main body inner chamber radiuses, and the angle of cut sth. askew round inclined-plane 9 and axis equals 25 °, and the base plate 8 of punishment in advance chute 7 is 40 ° with the angle of axis.
Embodiment five
A kind of twin-roll bituminous concrete mixer coal powder burner that present embodiment is introduced, according to Fig. 5-9, its structure comprises body of heater 4, burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5, burner hearth 6, sandstone material punishment in advance chute 7, crater 8, tertiary air road outlet 10.Burner hearth 6 is built by laying bricks or stones by the refractory brick of the special shaping of polylith and is formed, and the special refractory brick of whole burner hearth 6 usefulness piecemeals is built by laying bricks or stones, and the interface that each piece refractory brick is connected has all been done the mutual snap-in of tongue and groove, and seam also will be made filler with fire clay and apply plug with adhesion when building by laying bricks or stones.Burner hearth 6 totally be rendered as cylindrical shape, right-hand member top becomes 30 ° of oblique parts that cut in angle with axis, form one and lack the circle crater.As seen from the figure, the scarce round shape cross section of the crater 8 end chamfered portion of burner hearth 6 is diminishing along crater 8 directions.Cut the part bottom surface and be one relatively with the round inclined-plane 9 of cutting sth. askew of 30 ° of burner hearth 6 axis inclinations.Sandstone material punishment in advance chute 7 is installed in the top of the crater 8 of burner hearth 6, and its position is suitable with the round inclined-plane 9 of cutting sth. askew.Burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5 are installed on the body of heater 4, and with burner hearth 6 intracavity inter-connections.The outlet 10 in tertiary air road 5 runs through burner hearth 6 walls.The punishment in advance outlet 12 of the crater 8 of burner hearth 6, sandstone material punishment in advance chute 7 and the feeding inlet of drying roller.The crater 8 of burner hearth 6 is to cut sth. askew and lacks circularly, has 2 tertiary air roads outlets 10 to be distributed in the inwall of burner hearth 6, and 2 tertiary air road outlets 10 to the distance of the end face 11 of crater 8 equals 1/2,1/3 of burner hearth 6 length respectively.The outlet 10 of tertiary air road is 30 ° with the angle b of tangent to periphery, and the outlet 10 of tertiary air road is 20 ° with axis angle a.The scarce round action of the end face 11 of the crater 8 of burner hearth 6 is 0.55 times of burner hearth 6 main body inner chamber radiuses, and the angle of cut sth. askew round inclined-plane 9 and axis equals 30 °, and the base plate 8 of punishment in advance chute 7 is 40 ° with the angle of axis.
Embodiment six
A kind of twin-roll bituminous concrete mixer coal powder burner that present embodiment is introduced, according to Fig. 5-9, its structure comprises body of heater 4, burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5, burner hearth 6, sandstone material punishment in advance chute 7, crater 8, tertiary air road outlet 10.Burner hearth 6 is built by laying bricks or stones by the refractory brick of the special shaping of polylith and is formed, and the special refractory brick of whole burner hearth 6 usefulness piecemeals is built by laying bricks or stones, and the interface that each piece refractory brick is connected has all been done the mutual snap-in of tongue and groove, and seam also will be made filler with fire clay and apply plug with adhesion when building by laying bricks or stones.Burner hearth 6 totally be rendered as cylindrical shape, right-hand member top becomes 15 ° of oblique parts that cut in angle with axis, form one and lack the circle crater.As seen from the figure, the scarce round shape cross section of the crater 8 end chamfered portion of burner hearth 6 is diminishing along crater 8 directions.Cut the part bottom surface and be one relatively with the round inclined-plane 9 of cutting sth. askew of 30 ° of burner hearth 6 axis inclinations.Sandstone material punishment in advance chute 7 is installed in the top of the crater 8 of burner hearth 6, and its position is suitable with the round inclined-plane 9 of cutting sth. askew.Burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5 are installed on the body of heater 4, and with burner hearth 6 intracavity inter-connections.The outlet 10 in tertiary air road 5 runs through burner hearth 6 walls.The punishment in advance outlet 12 of the crater 8 of burner hearth 6, sandstone material punishment in advance chute 7 and the feeding inlet of drying roller.The crater 8 of burner hearth 6 lacks circular for cutting sth. askew, have 1 tertiary air road outlet 10 to be distributed in the inwall of burner hearth 6, and tertiary air road outlet 10 to the distance of the end face 11 of crater 8 equals 1/2 of burner hearth 6 length.The outlet 10 of tertiary air road is 45 ° with the angle b of tangent to periphery, and the outlet 10 of tertiary air road is 30 ° with axis angle a.The scarce round action of the end face 11 of the crater 8 of burner hearth 6 is 0.5 times of burner hearth 6 main body inner chamber radiuses, and the angle of cut sth. askew round inclined-plane 9 and axis equals 15 °.The base plate 8 of punishment in advance chute 7 is 30 ° with the angle of axis.
Embodiment seven
A kind of twin-roll bituminous concrete mixer coal powder burner that present embodiment is introduced, according to Fig. 5-9, its structure comprises body of heater 4, burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5, burner hearth 6, sandstone material punishment in advance chute 7, crater 8, tertiary air road outlet 10.Burner hearth 6 is built by laying bricks or stones by the refractory brick of the special shaping of polylith and is formed, and the special refractory brick of whole burner hearth 6 usefulness piecemeals is built by laying bricks or stones, and the interface that each piece refractory brick is connected has all been done the mutual snap-in of tongue and groove, and seam also will be made filler with fire clay and apply plug with adhesion when building by laying bricks or stones.Burner hearth 6 totally be rendered as cylindrical shape, the oblique part that cuts in right-hand member top and axis angle at 45 forms one and lacks the circle crater.As seen from the figure, the scarce round shape cross section of the crater 8 end chamfered portion of burner hearth 6 is diminishing along crater 8 directions.Cut the part bottom surface and be one relatively with the round inclined-plane 9 of cutting sth. askew of 30 ° of burner hearth 6 axis inclinations.Sandstone material punishment in advance chute 7 is installed in the top of the crater 8 of burner hearth 6, and its position is suitable with the round inclined-plane 9 of cutting sth. askew.Burning torch 1, wind powder pipe 2, secondary air duct 3, tertiary air road 5 are installed on the body of heater 4, and with burner hearth 6 intracavity inter-connections.The outlet 10 in tertiary air road 5 runs through burner hearth 6 walls.The punishment in advance outlet 12 of the crater 8 of burner hearth 6, sandstone material punishment in advance chute 7 and the feeding inlet of drying roller.The crater 8 of burner hearth 6 is to cut sth. askew and lacks circularly, has 2 tertiary air roads outlets 10 to be distributed in the inwall of burner hearth 6, and 2 tertiary air road outlets 10 to the distance of the end face 11 of crater 8 equals 1/2,1/3 of burner hearth 6 length respectively.The outlet 10 of tertiary air road is 30 ° with the angle b of tangent to periphery, and the outlet 10 of tertiary air road is 20 ° with axis angle a.The scarce round action of the end face 11 of the crater 8 of burner hearth 6 is 0.55 times of burner hearth 6 main body inner chamber radiuses, and the angle of cut sth. askew round inclined-plane 9 and axis equals 45 °, and the base plate 8 of punishment in advance chute 7 is 45 ° with the angle of axis.
The physical dimension of burner hearth forms a series according to supporting twin-roll bituminous concrete mixer specification size.Diameter of section will be determined by calculating by the thermic load of burning in the combustion space, 2 times of the desirable diameter of burner hearth length, and the thickness B of refractory brick is generally got 70 to 90 millimeters.Cutting sth. askew lacks circle crater place, and the action of cutting sth. askew will be checked according to the punishment in advance chute aperture area that mixer sandstone material inflow-rate of water turbine requires.
Claims (5)
1, a kind of twin-roll bituminous concrete mixer coal powder burner comprises body of heater (4), burning torch (1), wind powder pipe (2), secondary air duct (3), tertiary air road (5), burner hearth (6), sandstone material punishment in advance chute (7), crater (8), tertiary air road outlet (10); Burning torch (1), wind powder pipe (2), secondary air duct (3), tertiary air road (5) are installed on the body of heater (4), and with burner hearth (6) intracavity inter-connection, the outlet (10) of tertiary air road (5) runs through burner hearth (6) wall; Sandstone material punishment in advance chute (7) is installed in the top of the crater (8) of burner hearth (6), the feeding inlet of the crater (8) of burner hearth (6), the punishment in advance of sandstone material punishment in advance chute (7) outlet (12) and drying roller, it is characterized in that: the crater (8) of burner hearth (6) lacks circular for cutting sth. askew, the round inclined-plane (9) of cutting sth. askew becomes 15-45 ° of angle with burner hearth (6) axis, 1-4 tertiary air road outlet (10) is distributed in the inwall of burner hearth (6), and the distance of the end face (11) of outlet (10) to crater (8), tertiary air road is less than or equal to 2/3 of burner hearth (6) length.
2, a kind of twin-roll bituminous concrete mixer coal powder burner according to claim 1 is characterized in that: tertiary air road outlet (10) is 30-60 ° of angle with the angle of tangent to periphery, tertiary air road outlet (10) and 20-40 ° of angle of axis inclination.
3, a kind of twin-roll bituminous concrete mixer coal powder burner according to claim 2 is characterized in that: tertiary air road outlet (10) is 40-50 ° with the angle of tangent to periphery, and tertiary air road outlet (10) is 25-35 ° with axis angle.
4, a kind of twin-roll bituminous concrete mixer coal powder burner according to claim 3 is characterized in that: tertiary air road outlet (10) is 45 ° with the angle of tangent to periphery, and tertiary air road outlet (10) is 30 ° with axis angle.
5, a kind of twin-roll bituminous concrete mixer coal powder burner according to claim 1, it is characterized in that: the scarce round action of the end face (11) of the crater (8) of burner hearth (6) is 0.5-0.7 a times of burner hearth (6) main body inner chamber radius, and the angle of cut sth. askew round inclined-plane (9) and axis is less than or equal to the base plate (8) of punishment in advance chute (7) and the angle of axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02223223 CN2512572Y (en) | 2002-01-07 | 2002-01-07 | Powder coal combustion device of double drum pitch concrete stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02223223 CN2512572Y (en) | 2002-01-07 | 2002-01-07 | Powder coal combustion device of double drum pitch concrete stirrer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2512572Y true CN2512572Y (en) | 2002-09-25 |
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ID=33700981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02223223 Expired - Fee Related CN2512572Y (en) | 2002-01-07 | 2002-01-07 | Powder coal combustion device of double drum pitch concrete stirrer |
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| Country | Link |
|---|---|
| CN (1) | CN2512572Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345265A (en) * | 2011-07-14 | 2012-02-08 | 中铁三局集团有限公司 | Separation feeding-type hot mix intermittent asphalt mixture blending machine and production technology therefor |
| CN104647599A (en) * | 2015-03-10 | 2015-05-27 | 金陵科技学院 | Double-roller stirring device with proportioning device for building |
-
2002
- 2002-01-07 CN CN 02223223 patent/CN2512572Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345265A (en) * | 2011-07-14 | 2012-02-08 | 中铁三局集团有限公司 | Separation feeding-type hot mix intermittent asphalt mixture blending machine and production technology therefor |
| CN102345265B (en) * | 2011-07-14 | 2014-05-07 | 中铁三局集团有限公司 | Separation feeding-type hot mix intermittent asphalt mixture blending machine and production technology therefor |
| CN104647599A (en) * | 2015-03-10 | 2015-05-27 | 金陵科技学院 | Double-roller stirring device with proportioning device for building |
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