CN114909886B - Multifunctional drying cylinder for asphalt mixing station - Google Patents
Multifunctional drying cylinder for asphalt mixing station Download PDFInfo
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- CN114909886B CN114909886B CN202210532935.9A CN202210532935A CN114909886B CN 114909886 B CN114909886 B CN 114909886B CN 202210532935 A CN202210532935 A CN 202210532935A CN 114909886 B CN114909886 B CN 114909886B
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- 238000001035 drying Methods 0.000 title claims abstract description 32
- 239000010426 asphalt Substances 0.000 title claims abstract description 24
- 238000002156 mixing Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 142
- 238000003756 stirring Methods 0.000 claims abstract description 47
- 238000007599 discharging Methods 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 11
- 230000003139 buffering effect Effects 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- 230000002035 prolonged effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
- F26B11/0477—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum
- F26B11/0486—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum the elements being held stationary, e.g. internal scraper blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/02—Heating arrangements using combustion heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Road Paving Machines (AREA)
Abstract
The invention relates to a multifunctional drying cylinder for an asphalt mixing station, which comprises a cylinder body, a support frame and a burner, wherein the cylinder body is rotatably arranged on the support frame, the lower end of the cylinder body is rotatably connected with a sealing cover, one side of the sealing cover is provided with a discharging pipe, one end of the sealing cover is provided with the burner, and the inner cavity of the cylinder body is sequentially provided with a first material guiding area, a material turning area, a material stirring area, a material slowing area and a second material guiding area from right to left; a plurality of large turning plates and a plurality of small turning plates are uniformly arranged on the inner wall of the turning area, and a plurality of groups of stirring plates are arranged on the inner wall of the stirring area; the circumference arrangement is equipped with a plurality of groups of slow flitch subassemblies on the slow district inner wall, and slow flitch subassembly is including first slow flitch and the second slow flitch that is T type structural distribution, and the deflector can reduce the deflector and shovel the height of aggregate, makes it unable to form the curtain, avoids flame to be excessive to the heating of pitch, and first slow flitch and the second slow flitch that is T type structural distribution in the slow district can shunt the aggregate, reaches the effect that reduces aggregate travel speed, improves the stoving effect.
Description
Technical Field
The invention belongs to the technical field of asphalt drying cylinders, and particularly relates to a multifunctional drying cylinder for an asphalt mixing station.
Background
The asphalt mixture is a mixture formed by mixing mineral aggregate and asphalt binder. According to the source of mineral aggregate, there are two kinds of primary aggregate and regenerated aggregate. Because the characteristics of the virgin aggregate and the recycled aggregate are different, when the virgin aggregate and the recycled aggregate are dried, the virgin aggregate and the recycled aggregate are generally required to be dried respectively through two rollers, the number of matched equipment is large, and the effective utilization rate of the equipment is low.
When the existing drying cylinder is used for drying the virgin aggregate, the flame sprayed out of the burner is used for heating the virgin aggregate to 160-180 ℃, so that moisture in the virgin aggregate is removed, and when the drying cylinder of the equipment is used for heating and drying the recycled aggregate, the asphalt material can be driven to a high position under the action of the material turning plate due to the fact that the material turning plate is simple in structure and single in type, the contact time with the flame of the burner is increased in the throwing process, and therefore the recycled asphalt material is heated excessively, the recycled asphalt material is heated and aged, and the subsequent normal use is affected. And every stirring plate structure is fixed, and the material curtain that forms after the aggregate is thrown and falls can block gas ware flame, leads to the flame unable to heat the aggregate in feed area to influence drying efficiency, and stirring plate long-term and aggregate contact lead to stirring plate's upper end to take place wearing and tearing easily, consequently need frequently dismantle the change, not only increase use cost, and increased working strength.
Disclosure of Invention
The invention aims at the problems and discloses a multifunctional drying cylinder for an asphalt mixing station, which is suitable for drying recycled aggregate and simultaneously drying virgin aggregate and recycled aggregate.
The specific technical scheme is as follows:
the multifunctional drying cylinder for the asphalt mixing station comprises a cylinder body, a supporting seat frame and a burner, wherein the cylinder body is rotatably arranged on the supporting seat frame, the cylinder body is obliquely arranged, a feeding hole is formed in an opening at the upper end of the cylinder body, a feeding cover is sleeved at the feeding hole and is arranged on the supporting seat frame and is rotatably connected with the upper end of the cylinder body, an induced draft fan for sucking high-temperature flue gas is arranged at the upper end of the feeding cover, a sealing cover is rotatably connected at the lower end of the cylinder body, the bottom of the sealing cover is arranged on the supporting seat frame, a discharging pipe which is obliquely arranged downwards is arranged on one side of the sealing cover, the burner is arranged in the center of the side wall of one end of the sealing cover, and a flaming pipe of the burner extends into the cylinder body and heats flame sprayed in the cylinder body;
the inner cavity of the cylinder body is sequentially provided with a first material guiding area, a material turning area, a material stirring area, a material buffering area and a second material guiding area from the upper end to the lower end, the first material guiding area and the second material guiding area are respectively positioned at two ends of the inner cavity of the cylinder body, and a plurality of groups of material guiding plates which are spirally distributed are arranged on the inner walls of the first material guiding area and the second material guiding area and are used for conveying aggregate;
the inner wall of the material turning area is uniformly provided with a plurality of large material turning plates and a plurality of small material turning plates, the large material turning plates and the small material turning plates are distributed at intervals, the cross sections of the large material turning plates and the small material turning plates are of C-shaped structures and have the same direction, the diameters of the large material turning plates and the small material turning plates are equal, the cross section of the large material turning plates is in a major arc shape, the cross section of the small material turning plates is in a minor arc shape, and one sides of the large material turning plates and the small material turning plates are fixedly connected with the inner wall of the cylinder;
a plurality of groups of material stirring plates are arranged on the inner wall of the material stirring zone along the circumferential direction, each group of material stirring plates consists of a plurality of material stirring plates arranged along the axial direction of the cylinder, and one ends of the material stirring plates, which are close to the feed inlet, are all arranged in an upward inclined manner;
a plurality of groups of buffer plate assemblies are circumferentially arranged on the inner wall of the buffer zone, each group of buffer plate assemblies comprises a plurality of buffer assemblies which are axially arranged along the cylinder, each buffer assembly comprises a first buffer plate and a second buffer plate which are distributed in a T-shaped structure, one ends of the first buffer plate and the second buffer plate, which are close to the feed inlet, are fixedly connected with the inner wall of the cylinder, one ends of the first buffer plate and the second buffer plate, which are close to the discharge pipe, are obliquely upwards arranged, and the included angles between the first buffer plate and the second buffer plate and the inner wall of the cylinder are 30 degrees;
the inner cavity of the cylinder is positioned in the center of the second material guiding area and is provided with a fire gathering cylinder, one end of the fire gathering cylinder extends to the outer side of a fire spraying pipe of the combustor, so that flame burns in the fire gathering cylinder, the heating of the flame to the recycled aggregate is avoided, a plurality of fixing plates are distributed on the outer wall of the fire gathering cylinder along the circumferential direction, and one end of each fixing plate is fixedly connected with the inner wall of the cylinder to fix the fire gathering cylinder.
Further, a group of screw holes are formed in the upper side and the lower side of the large turning plate and the lower side of the small turning plate, and the large turning plate and the small turning plate are respectively matched with one group of screw holes through fasteners and fixedly connected with the inner wall of the cylinder body.
Further, the side wall of one end of the closing cover is arranged in an outward arch manner and forms an arch part, so that combustion deformation can be prevented.
Further, one side lower extreme of enclosing cover is equipped with the eccentric part that slightly protrudes the setting to the outside, set up on the lateral wall of eccentric part the discharging pipe, the discharging pipe is rectangular structure, and the discharging pipe is along its length direction slope on the enclosing cover lateral wall, during the ejection of compact, makes the play material clearance bigger and bigger under the stock guide plate roll-up effect to make the play material more loose, thereby reduce the energy consumption.
Further, a plurality of protruding ribs are arranged on the inner wall of the bottom end of the discharging pipe along the length direction of the discharging pipe, and when the discharging is carried out, aggregate can be filled into grooves between the protruding ribs, so that abrasion of the aggregate on the inner wall of the discharging pipe is reduced.
Further, a bending part is arranged on the fixing plate.
Further, the barrel inner chamber is located and is provided with the cover that gathers fire between the material district and the dialling district, gather the cover that gathers fire and be conical surface structure setting, gather the one end that the fire cover is close to the feed inlet and be the less one end of diameter size, and gather the diameter size that the fire cover is close to the one end of feed inlet and be less than the diameter size that gathers fire section of thick bamboo, gather and be equipped with a plurality of connecting plates along the circumference on the outer wall of fire cover, connecting plate one end all with barrel inner wall fixed connection, and also be provided with the portion of bending on the connecting plate.
The beneficial effects of the invention are as follows:
according to the invention, the stirring area and the buffering area are arranged in the cylinder, the stirring plate obliquely arranged in the stirring area can reduce the height of the stirring plate for shoveling the aggregate, so that the stirring plate cannot form a material curtain, aggregates such as stone dust and the like can travel downwards along the bottom end of the cylinder and can be covered on melted asphalt, excessive heating of asphalt by flame can be avoided, aging of asphalt is prevented, the aggregates can be split by the first buffering plate and the second buffering plate which are distributed in a T-shaped structure in the buffering area, the travelling speed of the aggregates can be reduced, the time of the aggregates in the cylinder is prolonged, the heated and dried effect of the aggregates is effectively improved, and the drying cylinder can be suitable for drying of recycled aggregates and can also be suitable for drying virgin aggregates and recycled aggregates simultaneously.
According to the invention, the fire gathering cylinder and the fire gathering cover are arranged in the cylinder body, and the flame of the burner is blocked through the fire gathering cylinder, so that the aggregate is prevented from being excessively heated by high-temperature flame when the aggregate is in progress along the inner wall of the cylinder body, and meanwhile, the fire gathering cover with a conical structure can further reduce the expansion range of the flame and avoid the excessive heating of asphalt materials.
The big material turning plate and the small material turning plate which are sequentially distributed at intervals are adopted in the material turning area, and the big material turning plate and the small material turning plate respectively adopt big semicircle structures and small semicircle structures, so that the big material turning plate and the small material turning plate scoop up aggregates with different amounts, and then fall down to form a dense and sparse material curtain, so that high-temperature flue gas of flame can pass through the material curtain and dry and heat the aggregates in the first material guiding area, and the drying efficiency can be improved. Screw holes are formed in two sides of the large turning plate and the small turning plate, and when one end of the large turning plate or one end of the small turning plate is worn, the large turning plate or the small turning plate can be detached, rotated and replaced to the other side, so that the service life of the turning plate is prolonged, and the operation is simple and quick.
The end wall of the closed cover is arranged in an outward arch mode, cracking deformation caused by high-temperature combustion can be effectively prevented, meanwhile, an eccentric part slightly protruding outwards is arranged at the lower end of one side of the closed cover, a discharging pipe is arranged on the side wall of the eccentric part, and during discharging, a larger discharging gap can be kept when the guide plate rolls up and passes through the position of the eccentric part, and discharging is enabled to be more loose, so that the effect of reducing energy consumption is achieved.
The bottom inner wall of the discharging pipe is provided with a plurality of convex ribs in an arrangement mode, so that aggregates can be filled into grooves between the convex ribs during discharging, abrasion of the aggregates on the inner wall of the discharging pipe is reduced in the subsequent continuous discharging process, and the service life of the discharging pipe is prolonged.
Drawings
Fig. 1 is a side view of the present invention.
Fig. 2 is a schematic view of the internal structure of the cylinder according to the present invention.
Fig. 3 is a schematic structural diagram of a second material guiding area in the barrel of the present invention.
Fig. 4 is a cross-sectional view of the in-drum inversion zone of the present invention.
Fig. 5 is a cross-sectional view of a kick-out area in a barrel of the present invention.
FIG. 6 is a cross-sectional view of the buffer area in the cartridge of the present invention.
Fig. 7 is a front view of the enclosure of the present invention.
Fig. 8 is a left side view of the enclosure of the present invention.
Fig. 9 is a right side view of the enclosure of the present invention.
The device comprises a support frame 1, a driving assembly 101, a combustor 2, a cylinder body 3, a feed inlet 31, a feed cover 4, a draught fan 41, a closed cover 5, a discharge pipe 51, a convex rib 511, an eccentric part 52, an arched part 53, a first material guiding area 6, a material guiding plate 61, a material stirring area 7, a large material stirring plate 71, screw holes 711, fastening pieces 712, a small material stirring plate 72, a material stirring area 8, a material stirring plate 81, a material buffering area 9, a first material buffering plate 91, a second material buffering plate 92, a second material guiding area 10, a fire collecting cylinder 11, a fixing plate 111, a bending part 1111, a fire collecting cover 12 and a connecting plate 121.
Detailed Description
In order to make the technical scheme of the invention clearer and more definite, the invention is further described below with reference to the accompanying drawings, and any scheme obtained by carrying out equivalent substitution and conventional reasoning on the technical characteristics of the technical scheme of the invention falls into the protection scope of the invention. The fixed connection mentioned in the invention is a common connection mode in the mechanical field, and the fixed connection can be realized by welding, bolt-nut connection and screw connection.
In the description of the invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention.
As shown in fig. 1-9, the multifunctional drying cylinder for the asphalt mixing station comprises a cylinder body 3, a supporting seat frame 1 and a burner 2, wherein the cylinder body 3 is rotatably arranged on the supporting seat frame 1 and driven by a driving assembly 101 to rotate, the cylinder body 3 is obliquely arranged, a feeding hole 31 is formed in an opening at the upper end of the cylinder body 3, a feeding cover 4 is sleeved at the feeding hole 31, the feeding cover 4 is arranged on the supporting seat frame 1 and is rotatably connected with the upper end of the cylinder body 3, an induced draft fan 41 for sucking high-temperature flue gas is arranged at the upper end of the feeding cover 4, a sealing cover 5 is sleeved at the lower end of the cylinder body 3 and is rotatably connected with the cylinder body 3, the bottom of the sealing cover 5 is arranged on the supporting seat frame 1, a discharging pipe 51 which is obliquely arranged downwards is arranged at one side of the sealing cover 5, the burner 2 is arranged in the middle of the side wall at one end of the sealing cover 5, and a flame spraying pipe of the burner 2 extends into the cylinder body 3 and heats flame sprayed in the cylinder body 3;
the inner cavity of the cylinder body 3 is sequentially provided with a first material guiding area 6, a material turning area 7, a material stirring area 8, a material buffering area 9 and a second material guiding area 10 from the upper end to the lower end, the first material guiding area 6 and the second material guiding area 10 are respectively positioned at two ends of the inner cavity of the cylinder body 3, and a plurality of groups of material guiding plates 61 which are spirally distributed are arranged on the inner walls of the first material guiding area 6 and the second material guiding area 10 and are used for conveying aggregate;
the inner wall of the material turning area 7 is uniformly provided with a plurality of large material turning plates 71 and a plurality of small material turning plates 72 in an arrayed manner, the large material turning plates 71 and the small material turning plates 72 are distributed at intervals, the sections of the large material turning plates 71 and the small material turning plates 72 are of C-shaped structures and are consistent in direction, the diameters of the large material turning plates 71 and the small material turning plates 72 are equal, the section of the large material turning plates 71 is of a major arc shape, the section of the small material turning plates 72 is of a minor arc shape, one sides of the large material turning plates 71 and the small material turning plates 72 are fixedly connected with the inner wall of the cylinder 3, and the lengths of the large material turning plates 71 and the small material turning plates 72 are 1.2 m-1.5 m;
a plurality of groups of material stirring plates are arranged on the inner wall of the material stirring zone 8 along the circumferential direction, each group of material stirring plates consists of a plurality of material stirring plates arranged along the axial direction of the cylinder body 3, one ends of the material stirring plates, which are close to the feed inlet 31, are all arranged in an upward inclined manner, and an included angle between the material stirring plates and the inner wall of the cylinder body 3 is 30 degrees;
a plurality of groups of buffer plate assemblies are circumferentially arranged on the inner wall of the buffer zone 9, each group of buffer plate assemblies comprises a plurality of buffer assemblies which are axially arranged along the cylinder body 3, each buffer assembly comprises a first buffer plate 91 and a second buffer plate 92 which are distributed in a T-shaped structure, one ends of the first buffer plate 91 and the second buffer plate 92, which are close to the feed inlet 31, are fixedly connected with the inner wall of the cylinder body 3, one ends of the first buffer plate 91 and the second buffer plate 92, which are close to the discharge pipe 51, are obliquely upwards arranged, and the included angles between the first buffer plate 91 and the second buffer plate 92 and the inner wall of the cylinder body 3 are 30 degrees;
the inner cavity of the cylinder body 3 is located in the center of the second material guiding area 10 and is provided with a fire gathering cylinder 11, one end of the fire gathering cylinder 11 extends to the outer side of a fire spraying pipe of the combustor 2, flame burns in the fire gathering cylinder 11, heating of the flame to regenerated aggregate is avoided, a plurality of fixing plates 111 are distributed on the outer wall of the fire gathering cylinder 11 along the circumferential direction, and one end of each fixing plate 111 is fixedly connected with the inner wall of the cylinder body 3 to fix the fire gathering cylinder 11.
Further, a set of screw holes 711 is formed on the upper side and the lower side of the large turning plate 71 and the small turning plate 72, and the large turning plate 71 and the small turning plate 72 are respectively matched with one set of screw holes 711 through fasteners 712 to be fixedly connected with the inner wall of the cylinder 3, so that when one end of the large turning plate 71 or one end of the small turning plate 72 is worn, the large turning plate 71 or the small turning plate 72 can be disassembled, rotated and replaced to the other side.
Further, the one end side wall of the closing cap 5 is formed to be outwardly arched to form an arched portion 53, thereby preventing combustion deformation.
Further, the lower end of one side of the closed cover 5 is provided with an eccentric portion 52 slightly protruding outwards, the side wall of the eccentric portion 52 is provided with a discharging pipe 51, the discharging pipe 51 is of a rectangular structure, the discharging pipe 51 is inclined on the side wall of the closed cover 5 along the length direction of the discharging pipe, and when discharging, a larger discharging gap can be kept when the position of the eccentric portion 52 is passed through under the action of turning over the material guide plate 61, and the discharging is more loose, so that the effect of reducing energy consumption is achieved.
Further, a plurality of ribs 511 are arranged on the inner wall of the bottom end of the discharging pipe 51 along the length direction of the discharging pipe, and when the discharging pipe 51 is used for discharging, aggregates can be filled in grooves between the ribs 511, so that abrasion of the aggregates on the inner wall of the discharging pipe 51 is reduced in the continuous discharging process.
Further, the fixing plate 111 is provided with a bending portion 1111 to prevent the fixing plate 111 from being broken due to expansion caused by heat and contraction caused by cold of the fixing plate 111.
Further, the inner cavity of the cylinder body 3 is provided with a fire collecting cover 12 between the material turning area 7 and the material stirring area 8, the fire collecting cover 12 is in a conical surface structure, one end of the fire collecting cover 12, which is close to the feed inlet 31, is one end with smaller diameter, the diameter of one end of the fire collecting cover 12, which is close to the feed inlet 31, is smaller than that of the fire collecting cylinder 11, a plurality of connecting plates 121 are arranged on the outer wall of the fire collecting cover 12 along the circumferential direction, one end of each connecting plate 121 is fixedly connected with the inner wall of the cylinder body 3, and bending parts 1111 are also arranged on the connecting plates 121.
The drying method comprises the following steps:
firstly, throwing virgin aggregate and recycled aggregate into a cylinder 3 through a feed port 31 of the cylinder 3 and locating in a first material guiding area 6, and simultaneously spraying high-temperature flame into the cylinder 3 by a burner 2, and slowly rotating the cylinder 3;
step two, the material guide plate 61 of the first material guide area 6 drives the raw aggregate and the regenerated aggregate to be conveyed forward to the material turning area 7 under the rotation action of the cylinder 3;
step three, a large turning plate 71 and a small turning plate 72 which are sequentially and alternately distributed are adopted in the turning area 7, the large turning plate 71 and the small turning plate 72 respectively adopt a large semicircle structure and a small semicircle structure, so that the large turning plate 71 and the small turning plate 72 scoop up aggregates with different amounts, the primary aggregates and the regenerated aggregates are driven to the top end of the cylinder 3 through the large turning plate 71 and fall down to form a material curtain, the primary aggregates and the regenerated aggregates are driven to one side of the cylinder 3 through the small turning plate 72 and fall down, the small turning plate 72 can not form the material curtain after reaching the top end of the cylinder 3, and a dense and sparse material curtain is formed in the cylinder 3, so that high-temperature flue gas of flame can pass through the material curtain and dry and heat the primary aggregates and the regenerated aggregates in the first guide area 6, and meanwhile, the fire collecting cover 12 with a conical structure can reduce the expansion range of the flame and reduce the heating effect of the high-temperature flame on the regenerated aggregates;
step four, the raw aggregate and the recycled aggregate move to a stirring area 8, the stirring plate obliquely arranged in the stirring area 8 can reduce the height of the stirring plate for stirring up the aggregate, the recycled aggregate is melted and moves along with the bottom end of the cylinder 3 in a heating temperature environment of 60 ℃, the raw aggregate is lifted to a lower height under the driving of the stirring plate 81, and the raw aggregate is covered and wrapped on the melted recycled aggregate to form mixed aggregate, so that the heating effect of high-temperature flame on the recycled aggregate is further reduced, and the aging phenomenon caused by contact of asphalt materials and open flame is prevented;
step five, the mixed aggregate moves to a buffer zone 9, and a first buffer plate 91 and a second buffer plate 92 which are distributed in a T-shaped structure in the buffer zone 9 shunt the mixed aggregate, so that the travelling speed of the aggregate is reduced, the drying time is prolonged, and the heated drying effect is improved;
step six, the mixed aggregate moves to the second material guiding area 10, the flame is covered by the flame gathering cylinder 11, the flame diffusion range is reduced, the flame does not heat the mixed aggregate any more, meanwhile, the mixed aggregate is conveyed to the position of the material discharging pipe 51 under the action of the material guiding plate 61, and finally, the mixed aggregate is discharged through the material discharging pipe 51, and the drying is finished.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (6)
1. The multifunctional drying cylinder for the asphalt mixing station comprises a cylinder body (3), a support frame (1) and a combustor (2), wherein the cylinder body (3) is rotatably arranged on the support frame (1), the cylinder body (3) is obliquely arranged, a feeding hole (31) is formed in an opening at the upper end of the cylinder body (3), a feeding cover (4) is sleeved at the feeding hole (31), the feeding cover (4) is arranged on the support frame (1) and is rotatably connected with the upper end of the cylinder body (3), an induced draft fan (41) is arranged at the upper end of the feeding cover (4), a sealing cover (5) is rotatably connected with the lower end of the cylinder body (3), the bottom of the sealing cover (5) is arranged on the support frame (1), a discharging pipe (51) which is obliquely arranged downwards is arranged on one side of the sealing cover (5), the combustor (2) is arranged in the center of the side wall of one end of the sealing cover (5), and a fire spraying pipe of the combustor (2) stretches into the cylinder body (3) and heats flame sprayed inside the cylinder body (3);
the aggregate conveying device is characterized in that a first material guiding area (6), a material turning area (7), a material stirring area (8), a material buffering area (9) and a second material guiding area (10) are sequentially arranged at the inner cavity of the barrel (3) from the upper end to the lower end, the first material guiding area (6) and the second material guiding area (10) are respectively positioned at two ends of the inner cavity of the barrel (3), and a plurality of groups of spirally distributed material guiding plates (61) are respectively arranged on the inner walls of the first material guiding area (6) and the second material guiding area (10) and are used for conveying aggregates; a plurality of large turning plates (71) and a plurality of small turning plates (72) are uniformly arranged on the inner wall of the turning area (7), the large turning plates (71) and the small turning plates (72) are distributed at intervals, the sections of the large turning plates (71) and the small turning plates (72) are of C-shaped structures and are consistent in direction, the section of the large turning plates (71) is in a major arc shape, the section of the small turning plates (72) is in a minor arc shape, and one sides of the large turning plates (71) and the small turning plates (72) are fixedly connected with the inner wall of the cylinder body (3); a plurality of groups of stirring plates (81) are arranged on the inner wall of the stirring zone (8) along the circumferential direction, each group of stirring plates (81) consists of a plurality of stirring plates (81) which are arranged along the axial direction of the cylinder body (3), and one ends of the stirring plates (81) close to the feed inlet (31) are all arranged in an upward inclined manner; a plurality of groups of buffer plate assemblies are circumferentially arranged on the inner wall of the buffer zone (9), each group of buffer plate assemblies comprises a plurality of buffer assemblies which are axially arranged along the cylinder body (3), each buffer assembly comprises a first buffer plate (91) and a second buffer plate (92) which are distributed in a T-shaped structure, one ends of the first buffer plate (91) and the second buffer plate (92) close to the feed inlet (31) are fixedly connected with the inner wall of the cylinder body (3), and one ends of the first buffer plate (91) and the second buffer plate (92) close to the discharge pipe (51) are obliquely arranged upwards;
the inner cavity of the cylinder body (3) is positioned in the center of the second material guiding area (10) and is provided with a fire gathering cylinder (11), one end of the fire gathering cylinder (11) extends to the outer side of a fire spraying pipe of the combustor (2) so that flames burn in the fire gathering cylinder (11), the heating of the flames to regenerated aggregate is avoided, a plurality of fixing plates (111) are distributed on the outer wall of the fire gathering cylinder (11) along the circumferential direction, and one end of each fixing plate (111) is fixedly connected with the inner wall of the cylinder body (3) to fix the fire gathering cylinder (11);
a bending part (1111) is arranged on the fixed plate (111);
the utility model discloses a fire-collecting device for the material stirring area, including barrel (3) inner chamber, barrel (12) inner chamber, fire-collecting cover (12) and connecting plate (121) are provided with between stirring area (7) and stirring area (8), fire-collecting cover (12) is conical surface structure setting, and the one end that fire-collecting cover (12) is close to feed inlet (31) is the less one end of diameter size, and the diameter size that fire-collecting cover (12) is close to the one end of feed inlet (31) is less than the diameter size of fire-collecting barrel (11), is equipped with a plurality of connecting plates (121) along the circumference on the outer wall of fire-collecting cover (12), connecting plate (121) one end all is fixedly connected with barrel (3) inner wall, and also is provided with bending portion (1111) on connecting plate (121).
2. The multifunctional drying cylinder for the asphalt mixing station according to claim 1, wherein a group of screw holes (711) are formed in the upper side and the lower side of the large turning plate (71) and the small turning plate (72), and the large turning plate (71) and the small turning plate (72) are respectively fixedly connected with the inner wall of the cylinder body (3) through the cooperation of a group of screw holes (711) with a fastener (712).
3. A multifunctional drying drum for asphalt mixing stations according to claim 1, characterized in that one end side wall of the closing cap (5) is arranged in an outwardly arched manner and forms an arched portion (53).
4. A multifunctional drying drum for asphalt mixing stations according to claim 3, characterized in that an eccentric part (52) slightly protruding outwards is arranged at the lower end of one side of the closed cover (5), the discharging pipe (51) is arranged on the side wall of the eccentric part (52), the discharging pipe (51) is in a rectangular structure, and the discharging pipe (51) is inclined on the side wall of the closed cover (5) along the length direction.
5. The multifunctional drying cylinder for asphalt mixing plant according to claim 4, wherein a plurality of ribs (511) are arranged on the inner wall of the bottom end of the discharging pipe (51) along the length direction thereof.
6. A method of drying a multifunctional drying cylinder for asphalt mixing plants according to any one of claims 1 to 5, comprising the steps of:
firstly, throwing virgin aggregate and recycled aggregate into a barrel (3) through a feed inlet (31) of the barrel (3) and locating in a first material guiding area (6), and simultaneously spraying high-temperature flame into the barrel (3) by a combustor (2), and slowly rotating the barrel (3);
step two, a material guide plate (61) of the first material guide area (6) drives the raw aggregate and the regenerated aggregate to be conveyed forwards to a material turning area (7) under the rotation action of the cylinder (3);
in the material turning area (7), the primary aggregate and the regenerated aggregate are driven to the top end of the cylinder body (3) through the large material turning plate (71) and fall down to form a material curtain, the primary aggregate and the regenerated aggregate are driven to one side of the cylinder body (3) through the small material turning plate (72), so that the material curtain cannot be formed by the aggregate after the small material turning plate (72) reaches the top end of the cylinder body (3), a dense and sparse material curtain is formed in the cylinder body (3), and meanwhile, the expansion range of flame can be reduced by the fire collecting cover (12) with a conical structure, and the heating effect of high-temperature flame on the regenerated aggregate is reduced;
step four, the virgin aggregate and the recycled aggregate move to a stirring area (8), the recycled aggregate is melted after being heated and moves along with the bottom end of the cylinder body (3), the virgin aggregate is lifted to a lower height under the drive of a stirring plate (81) and is covered and wrapped on the melted recycled aggregate so as to form mixed aggregate, and the heating effect of high-temperature flame on the recycled aggregate is further reduced;
step five, the mixed aggregate moves to a buffer area (9), and a first buffer plate (91) and a second buffer plate (92) which are distributed in a T-shaped structure in the buffer area (9) shunt the mixed aggregate, so that the travelling speed of the aggregate is reduced, and the drying time is prolonged;
step six, the mixed aggregate moves to a second material guiding area (10), a flame is covered by a flame gathering cylinder (11), the flame diffusion range is reduced, the mixed aggregate is not heated any more by the flame, meanwhile, the mixed aggregate is conveyed to the position of a material discharging pipe (51) under the action of a material guiding plate (61), and finally, the mixed aggregate is discharged through the material discharging pipe (51), and the drying is finished.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210532935.9A CN114909886B (en) | 2022-05-11 | 2022-05-11 | Multifunctional drying cylinder for asphalt mixing station |
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| CN202210532935.9A CN114909886B (en) | 2022-05-11 | 2022-05-11 | Multifunctional drying cylinder for asphalt mixing station |
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| CN114909886B true CN114909886B (en) | 2023-10-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116697709B (en) * | 2023-08-09 | 2023-10-27 | 徐州徐工养护机械有限公司 | Asphalt aggregate drying device |
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