CN112211068A - Energy-saving asphalt mixing station - Google Patents
Energy-saving asphalt mixing station Download PDFInfo
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- CN112211068A CN112211068A CN202011044744.5A CN202011044744A CN112211068A CN 112211068 A CN112211068 A CN 112211068A CN 202011044744 A CN202011044744 A CN 202011044744A CN 112211068 A CN112211068 A CN 112211068A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1009—Plant wherein type or construction of the mixer are irrelevant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/05—Crushing, pulverising or disintegrating apparatus; Aggregate screening, cleaning, drying or heating apparatus; Dust-collecting arrangements specially adapted therefor
Abstract
The utility model relates to an energy-saving pitch mixing station, it includes the feed belt feeder, drying drum, hot aggregate lifting machine, pitch jar and agitated kettle, drying drum includes body and heating mechanism, heating mechanism includes a burning section of thick bamboo, the oil gun, supply oil tank and air feed subassembly, the end and the body intercommunication setting of giving vent to anger of a burning section of thick bamboo, the oil gun sets up in a burning section of thick bamboo, and the oil-out of oil gun sets up towards the body, supply oil tank and oil gun intercommunication set up, the air feed subassembly is including supplying the air tank, fan and many air supply pipes, fan and air feed tank intercommunication set up, many air supply pipes all set up with a burning section of thick bamboo intercommunication and the tangent setting of inner wall of air supply pipe and a burning section of thick bamboo, and many air supply pipes arrange in proper. This application has and can form multilayer spiral helicine air current in the combustion cylinder, and then increases the area of contact of fuel and air, reduces the turbulent flow of air in the combustion cylinder and to the influence when the fuel burns, finally reaches the effect that increases fuel burning sufficiency.
Description
Technical Field
The application relates to the technical field of asphalt concrete production equipment, in particular to an energy-saving asphalt mixing station.
Background
The asphalt mixing station is a device for mixing and stirring aggregates, fillers and asphalt with different particle sizes after drying and heating into a uniform mixture according to a designed mixing ratio at a specified temperature. Asphalt mixing plants are formed by connecting relatively independent devices to form a system centered on a mixer. These devices mainly comprise: the device comprises a cooling device, a drying roller, a hot aggregate lifting device, a vibration screening device, a stirring pot, an asphalt tank, a finished product bin and the like.
When using the mixer, transport the ore raw materials of different specifications to the cold feed bin that corresponds in, then transport the ore in the cold feed bin raw materials in the drying drum through the feed belt feeder, drying drum heats the ore raw materials to the uniform temperature after, the ore raw materials comes out at drying drum's export, mention among the shale shaker device by hot aggregate lifting machine, screen into a plurality of specifications with the ore raw materials through the shale shaker device, get into respectively and store in the corresponding hot material storehouse, the hot pitch that the pitch jar sent simultaneously and the ore raw materials in the hot material storehouse get into the agitator kettle simultaneously and force the stirring, the finished product that stirs is sent into in the finished product feed bin.
In the related art, as disclosed in chinese patent publication No. CN110360549A, a combustion system for a mixing station and a flame adjusting method using the same are disclosed, the combustion system including a combustion cylinder, an oil gun for receiving fuel oil and compressed air for atomizing the fuel oil, and injecting atomized fuel oil into the combustion cylinder; the oil supply device is connected with the oil gun and used for supplying the fuel oil to the oil gun; the air supply device is connected with the oil gun and used for supplying the compressed air to the oil gun; the air supply device is connected with the combustion cylinder and used for providing combustion air for the combustion of the atomized fuel oil; the control device is in signal connection with the oil supply device, the air supply device and the air supply device, and the control device adjusts the air supply device to supply the air supply quantity Q of the compressed air and adjusts the air supply device to supply the air supply quantity Q of the combustion air according to the oil supply device to supply the oil supply quantity Q oil of the fuel oil. When the heating power of the combustion system is changed, the air supply quantity Qair of the compressed air can be correspondingly adjusted according to the change of the oil supply quantity Qoil of the combustion system.
In view of the above related art, the inventor believes that when the air supply device supplies fresh air to the combustion cylinder, the air blower supplies air to the combustion cylinder, and the air blown into the combustion cylinder by the air blower interferes with fuel sprayed by the oil gun, so that the fuel sprayed by the oil gun is blown by the air to be further away from the oil gun, and further, the air-to-air contact of the fuel which is away from the oil gun is insufficient, which results in the defect of insufficient fuel combustion.
Disclosure of Invention
In order to alleviate the insufficient problem of fuel burning, the application provides an energy-saving asphalt mixing station.
The application provides an energy-saving asphalt mixing station adopts following technical scheme:
an energy-saving asphalt mixing station comprises a feeding belt conveyor, a drying roller, a hot aggregate elevator, an asphalt tank and a stirring pot, wherein the discharge end of the feeding belt conveyor is positioned at the feed inlet of the drying roller, the feeding belt conveyor is used for conveying ore raw materials to the drying roller, the feed inlet of the hot aggregate elevator is positioned at the discharge outlet of the drying roller, the hot aggregate elevator is used for conveying the ore raw materials in the drying roller to the stirring pot, the discharge pipe of the asphalt tank is communicated with the stirring pot, and the asphalt tank is used for providing asphalt raw materials for the stirring pot; drying drum includes body and heating mechanism, heating mechanism includes a section of thick bamboo of burning, oil gun, supplies oil tank and air feed subassembly, the end of giving vent to anger of a section of thick bamboo sets up with the body intercommunication, the oil gun sets up in a section of thick bamboo of burning, just the oil-out of oil gun sets up towards the body, supply oil tank and oil gun intercommunication setting, the air feed subassembly includes air feed tank, fan and many air supply pipes, the fan sets up with air feed tank intercommunication, many the air supply pipe all sets up with a section of thick bamboo of burning intercommunication and the tangent setting of air supply pipe and the inner wall of a section of thick bamboo of burning, and many the air supply pipe is arranged in proper order along the direction of keeping away from the.
By adopting the technical scheme, when asphalt concrete is produced at an asphalt mixing station, ore raw materials are conveyed into a body by a feeding belt conveyor, then the ore raw materials in the body are dried by a heating mechanism, the dried ore raw materials are lifted into a stirring pot by a hot aggregate elevator, and meanwhile, the asphalt raw materials are conveyed into the stirring pot by an asphalt tank, so that the ore raw materials and the asphalt raw materials are mixed in the stirring pot, when the ore raw materials in the body are dried by the heating mechanism, an oil supply box supplies oil to an oil gun, a fan is started, the fan pumps outside air into an air supply box, the air in the air supply box enters a combustion cylinder through an air supply pipe, and because the air supply pipe is arranged tangentially to the inner wall of the combustion cylinder, the air entering the combustion cylinder flows spirally, then the turbulent flow of the air in the combustion cylinder is reduced, and because a plurality of air supply pipes are arranged in sequence, therefore, multilayer spiral airflow can be formed in the combustion cylinder, so that the contact area of fuel oil and air is increased, the influence of the turbulent flow of the air in the combustion cylinder on the combustion of the fuel oil is reduced, and the effect of increasing the combustion sufficiency of the fuel oil is finally achieved.
Optionally, one end of each of the plurality of gas supply pipes close to the combustion cylinder is bent towards the body.
Through adopting above-mentioned technical scheme, because the one end that the air supply pipe is close to the combustion cylinder sets up towards the direction bending of body, so air through the air supply pipe entering combustion cylinder can produce the air current of spiral towards body direction motion, makes the fuel combustion in the combustion cylinder abundant on the one hand, and on the other hand spiral towards the air current of body direction motion can be with the heat in the combustion cylinder to the body in, and then increase the drying efficiency of body to the ore raw materials.
Optionally, the oil-out department of oil gun is provided with the dispersion piece that is the taper, the dispersion piece rotates with the oil gun to be connected, just the one end that the dispersion piece is close to self awl end and the oil-out department butt of oil gun just can take place relative rotation, set up a plurality of axial cross sections on the dispersion piece and be curved through-hole, just the axial cross section is in the arc center orientation dispersion piece of curved through-hole.
By adopting the technical scheme, when the fuel in the oil gun is sprayed out through the oil outlet, the fuel flows through the through holes in the dispersion blocks, and the through holes are arc-shaped, so that the fuel flowing through the dispersion blocks drives the dispersion blocks, then the dispersion blocks and the oil gun rotate relatively, and meanwhile, the fuel sprayed out through the dispersion blocks flows spirally, so that the contact area between the fuel and the air in the combustion cylinder is increased, and finally the effect of increasing the fuel combustion sufficiency in the combustion cylinder is achieved.
Optionally, still include the dust device, the dust device is including falling dust cover, dust fall case and many dust fall pipes, fall dust cover and establish on the feed belt feeder, many the one end of dust fall pipe all sets up with the top intercommunication of dust fall cover, many the other end and the dust fall case intercommunication of dust fall pipe set up, it is provided with negative-pressure air fan to fall the last intercommunication of dust case.
Through adopting above-mentioned technical scheme, when the feed belt feeder transported ore raw materials, the dust that the dust fall cover produced the ore raw materials covers, start negative-pressure air fan, negative-pressure air fan takes the air in the dust fall case out, then make in the dust fall case produce the negative pressure, the mouth of pipe department that dust fall case one end was kept away from to the dust fall pipe simultaneously produces suction, thereby make in the dust fall case is inhaled to the dust that the dust fall pipe covers the dust, and then realize that dust device collects the dust that the ore raw materials produced, finally reach and reduce the pollution of dust to the air.
Optionally, the dust fall cover is provided with supplementary cover near the one end of body is fixed, supplementary cover is established in the feed inlet department of body.
Through adopting above-mentioned technical scheme, when the feed belt feeder transported the ore raw materials to the body, the dust in the ore raw materials was covered by supplementary cover, reduces then that the dust floats and carries out the phenomenon emergence that pollutes to the air in the air, further increases dust device's dust fall effect.
Optionally, many the dust fall pipe is all connected in the dust fall case one end relative with negative-pressure air fan, be provided with first filter in the dust fall case, first filter perpendicular to dust fall case air flow direction sets up.
Through adopting above-mentioned technical scheme, the dust that gets into in the dust fall case through the dust fall pipe is blockked by first filter, makes then the dust blocked in the dust fall case, reduces the dust on the one hand and follows the condition emergence of air discharge to the air in the dust fall case, and on the other hand reduces dust and negative-pressure air fan's flabellum contact adhesion on the flabellum, and then increases negative-pressure air fan's load, guarantees negative-pressure air fan's normal work.
Optionally, the bottom intercommunication of dust falling box is provided with the dust exhaust pipe, the dust exhaust pipe sets up between first filter and dust fall pipe, the dust exhaust pipe is radial near the one end of dust falling box, the one end that the dust exhaust pipe kept away from the dust falling box is provided with the water tank, the one end that the dust exhaust pipe kept away from the dust falling box extends into the water tank.
Through adopting above-mentioned technical scheme, the dust that is blockked down by first filter falls into the dust exhaust pipe, makes then the dust be radial dust exhaust pipe along one end and gets into in the water tank, and the one end that is close to of dust exhaust pipe falls the dust tank and is radial effect that can play the direction to the motion of dust, makes the dust and the water in the water tank blend into together simultaneously to reach the effect of thoroughly eliminating the dust, finally increase the elimination effect of dust device to the dust.
Optionally, be provided with the second filter in the dust exhaust pipe, the second filter slope sets up, the dust exhaust pipe corresponds the second filter and is provided with row material pipe for the lowest end intercommunication of dust falling box, arrange the cover on the material pipe and be equipped with the collection bag.
Through adopting above-mentioned technical scheme, when dust device carries out the dust fall to the feed belt feeder, the less ore raw materials that dust fall cover covers also probably gets into the dust fall case through the dust fall pipe, the ore that gets into in the dust fall case is kept away from and is blockked by first filter, then make dust and ore raw materials fall into the dust exhaust pipe under the effect of self gravity, make ore raw materials and dust fall on the second filter simultaneously, the ore raw materials that fall on the second filter fall into the collecting bag through arranging the material pipe along the incline direction of second filter, the dust that falls on the second filter falls into in the water tank through the filtration pore on the second filter, and then make the water in dust and the water tank fuse together, finally reach the effect with less ore raw materials and the dust separation in the dust, reduce the waste of ore raw materials.
Optionally, still include exhaust treatment device, waste treatment device includes blast pipe, first rose box, second rose box and chimney, the top intercommunication of blast pipe and pitch jar, the one end and the first rose box intercommunication setting of pitch jar are kept away from to the blast pipe, first rose box and second rose box intercommunication setting, chimney and second rose box intercommunication setting.
Through adopting above-mentioned technical scheme, when pitch raw materials are being carried to the agitated kettle in the pitch jar, need heat the pitch raw materials in the pitch jar earlier, can produce pitch cigarette and benzopyrene at the in-process that heats the pitch raw materials, pitch cigarette and benzopyrene get into first filter box through the blast pipe, then get into the second filter box, finally discharge into the atmosphere through the chimney, after pitch jar combustion gas filters through first filter box and second filter box, a large amount of pitch cigarette and benzopyrene in the gas are filtered, and then reduce the pollution of pitch cigarette and benzopyrene to the air.
Optionally, be provided with in the second filter tank and be used for carrying out filterable filtering mechanism to glance coal and benzopyrene, filtering mechanism includes filtration membrane and carries out the rolling subassembly of rolling to filtration membrane, the orientation setting that filtration membrane perpendicular to second filter tank air flows, rolling subassembly includes the wind-up roll, unreels roller and first driving motor, the wind-up roll with unreel roller parallel arrangement, just the wind-up roll with unreel the roller all with the second filter tank rotate to be connected, and the second filter tank is worn out to the one end of wind-up roll, first driving motor and second filter tank fixed connection, the output shaft of first driving motor is connected with the one end transmission that the second filter tank was worn out to the wind-up roll.
Through adopting above-mentioned technical scheme, gaseous entering second filter tank after first filter tank filters, then make not by the filterable glance coal of first filter tank and benzopyrene and filtration membrane contact, thereby make filtration membrane filter glance coal and benzopyrene, when filtration membrane filters glance coal and benzopyrene, start first driving motor, first driving motor drives the wind-up roll and rotates, the wind-up roll rotates under filtration membrane's effect simultaneously, thereby make the filtration membrane rolling on the wind-up roll, and then realize that filtration membrane filters the time filtration membrane's effect section changes to glance coal and benzopyrene, it blocks up and influences filtration membrane's ventilation effect to reduce filtration membrane glance coal and benzopyrene, increase filtration membrane to the filter effect of glance coal and benzopyrene.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by arranging the combustion cylinder, the oil gun, the air supply box, the fan and the air supply pipe, when asphalt concrete is produced at an asphalt mixing station, the ore raw material is conveyed into the body by the feeding belt conveyor, then the ore raw material in the body is dried by the heating mechanism, the dried ore raw material is lifted into the stirring pot by the hot aggregate elevator, meanwhile, the asphalt raw material is conveyed into the stirring pot by the asphalt tank, so that the ore raw material and the asphalt raw material are mixed in the stirring pot, when the ore raw material in the body is dried by the heating mechanism, the oil is supplied to the oil gun by the oil supply box, the fan is started, the external air is pumped into the air supply box by the fan, the air in the air supply box enters the combustion cylinder through the air supply pipe, because the air supply pipe is tangentially arranged with the inner wall of the combustion cylinder, the air entering the combustion cylinder is in spiral flow, then the turbulence of the air in the combustion cylinder is reduced, because the plurality of air supply pipes are arranged in sequence, multilayer spiral airflow can be formed in the combustion cylinder, so that the contact area of fuel oil and air is increased, the influence of turbulent flow of the air in the combustion cylinder on fuel oil combustion is reduced, and the effect of increasing the fuel oil combustion sufficiency is finally achieved;
2. by arranging the dispersing block, when fuel in the oil gun is sprayed out from the oil outlet, the fuel flows through the through hole on the dispersing block, and the axial section of the through hole is arc-shaped, so that the fuel flowing through the dispersing block drives the dispersing block, the dispersing block and the oil gun rotate relatively, and the fuel sprayed out from the dispersing block flows spirally, so that the contact area between the fuel and air in the combustion cylinder is increased, and the effect of increasing the fuel combustion sufficiency in the combustion cylinder is finally achieved;
3. through setting up the dust fall cover, the dust fall case, dust fall pipe and negative-pressure air fan, when the feed belt feeder transports ore raw materials, the dust that the ore raw materials produced is covered to the dust fall cover, start negative-pressure air fan, negative-pressure air fan takes the air in the dust fall case out, then make the dust fall case produce the negative pressure, dust fall pipe keeps away from the mouth of pipe department of dust fall case one end and produces suction simultaneously, thereby make the dust that the dust fall pipe covers the dust intake dust fall case, and then realize dust device and collect the dust that the ore raw materials produced, finally reach the pollution that reduces the dust to the air.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an energy-saving asphalt mixing station;
FIG. 2 is a schematic view of the heating mechanism;
FIG. 3 is a schematic view showing a coupling structure of the combustion can and the gas supply pipe, mainly illustrating a bent arrangement of the gas supply pipe;
FIG. 4 is a schematic structural view of a discrete block;
fig. 5 is a schematic structural diagram of the dust settling device;
FIG. 6 is a schematic view of the connection structure of the dust falling box and the dust exhaust pipe;
FIG. 7 is an enlarged view of portion A of FIG. 6;
FIG. 8 is a schematic view of the exhaust gas treatment device;
FIG. 9 is a schematic view showing an internal structure of a waste disposal apparatus;
fig. 10 is an enlarged view of a portion B in fig. 8.
Description of reference numerals: 100. a feeding belt conveyor; 200. drying the roller; 210. a body; 220. a heating mechanism; 221. a combustion can; 222. an oil gun; 223. an oil supply tank; 224. a gas supply assembly; 225. dispersing blocks; 226. a through hole; 227. a gas supply tank; 228. a fan; 229. a gas supply pipe; 300. a hot aggregate elevator; 400. an asphalt tank; 500. a stirred pot; 600. a dust falling device; 610. a dust falling cover; 611. an auxiliary cover; 620. a dust falling box; 621. a negative pressure fan; 622. a first filter plate; 623. a dust exhaust pipe; 624. a second filter plate; 625. a discharge pipe; 626. a collection bag; 627. a water tank; 630. a dust settling pipe; 700. an exhaust gas treatment device; 710. an exhaust pipe; 720. a first filter tank; 721. an activated carbon plate; 722. a support ring; 723. an elastic sheet; 724. cleaning the opening; 725. a first door body; 730. a second filter tank; 731. a filtering mechanism; 732. a filtration membrane; 733. a winding component; 734. a wind-up roll; 735. unwinding rollers; 736. a first drive motor; 740. a chimney; 741. an operation port; 742. a second door body; 743. a locking piece; 744. an L-shaped rod; 745. a rubber pad; 800. a locking assembly; 810. a blocking ring; 820. a locking ring; 821. a half ring; 822. locking the bolt; 900. a second drive motor; 910. a reciprocating screw; 911. a lead screw body; 912. a slider; 913. a belt pulley; 914. a belt; 920. a brush; 930. a scraper.
Detailed Description
The present application is described in further detail below with reference to figures 1-10.
The embodiment of the application discloses energy-saving asphalt mixing station.
Referring to fig. 1, an energy-saving asphalt mixing station includes a belt feeder 100, a drying drum 200, a hot aggregate elevator 300, an asphalt tank 400, and a stirring pan 500, and further includes a dust-settling device 600 for settling dust for the belt feeder 100, and a waste treatment device for generating waste for the asphalt tank 400 and treating the waste. The discharge end of the feeding belt conveyor 100 is located at the feed inlet of the drying drum 200, and the feeding belt conveyor 100 is used for conveying ore raw materials into the drying drum 200. The feed inlet of the hot aggregate elevator 300 is located at the discharge outlet of the drying drum 200, and the hot aggregate elevator 300 is used to transport the ore raw material in the drying drum 200 to the agitating pan 500. The discharge pipe of the asphalt tank 400 is arranged in communication with the stirring kettle 500, and the asphalt tank 400 is used for providing asphalt raw material for the stirring kettle 500.
Referring to fig. 1 and 2, for the purpose of saving energy, the drying drum 200 includes a body 210 and a heating mechanism 220, and the heating mechanism 220 includes a combustion cylinder 221, an oil gun 222, an oil supply tank 223, and an air supply assembly 224. The air outlet end of the combustion cylinder 221 is communicated with the body 210, the oil gun 222 is fixedly installed in the combustion cylinder 221, the oil gun 222 and the center line of the combustion cylinder 221 are arranged in a collinear mode, the oil outlet of the oil gun 222 faces the body 210, and the oil supply tank 223 and the oil gun 222 are arranged in a communicated mode. Referring to fig. 2 and 3, the air supply assembly 224 includes an air supply box 227, a fan 228, and a plurality of air supply pipes 229, the fan 228 is disposed to communicate with the air supply box 227, the plurality of air supply pipes 229 are disposed to communicate with the combustion cylinder 221 and the air supply pipes 229 are disposed tangentially to an inner wall of the combustion cylinder 221, one end of the plurality of air supply pipes 229 close to the combustion cylinder 221 is disposed to be curved toward the body 210, and the plurality of air supply pipes 229 are sequentially disposed in a direction away from the body 210.
When the heating mechanism 220 heats the main body 210, the fuel supply tank 223 supplies fuel to the oil gun 222, and the fuel injected from the oil gun 222 is burned in the combustion cylinder 221. When fuel oil is combusted, the fan 228 provides air for the air supply box 227, so that air in the air supply box 227 enters the combustion cylinder 221 through the air supply pipe 229, the air entering the combustion cylinder 221 through the air supply pipe 229 flows in a cyclone shape due to the fact that the air supply pipe 229 is arranged tangentially to the inner wall of the combustion cylinder 221, and the air entering the combustion cylinder 221 through the air supply pipe 229 is arranged towards the body 210 in an inclined manner due to the fact that one end, close to the combustion cylinder 221, of the air supply pipe 229, the air moves towards the body 210 in a spiral shape, and therefore hot air in the combustion cylinder 221 flows towards the direction of the body 210; the plurality of air supply pipes 229 are sequentially arranged in the direction away from the body 210, so that a plurality of layers of air which is spiral airflow exists in the combustion cylinder 221, the contact amount of fuel oil and air in the combustion cylinder 221 is increased, and the effect of increasing the fuel oil combustion sufficiency is finally achieved.
Referring to fig. 2 and 4, in order to increase the contact area between the fuel sprayed by the oil gun 222 and the air, a conical dispersion block 225 is mounted at the oil outlet of the oil gun 222, the dispersion block 225 is rotatably connected with the oil gun 222, and one end of the dispersion block 225 close to the conical bottom of the dispersion block is abutted against the oil outlet of the oil gun 222 and can rotate relatively. A plurality of through holes 226 having an arc-shaped axial cross section are formed in the dispersing block 225, and the arc center of the through hole 226 having an arc-shaped axial cross section faces the dispersing block 225. When the oil gun 222 sprays fuel into the combustion cylinder 221, the fuel is sprayed out through the through holes 226 on the dispersion block 225; because the axial section of the through hole 226 is arc-shaped, when the fuel is sprayed out through the through hole 226, the fuel drives the dispersion block 225, so that the dispersion block 225 and the oil gun 222 rotate relatively, the motion track of the fuel sprayed out through the dispersion block 225 is spiral, the effect that the fuel sprayed out through the oil gun 222 is dispersed is finally realized, the contact area of the fuel and air is increased, and the combustion sufficiency of the fuel is further increased.
Referring to fig. 5 and 6, in order to reduce air pollution caused by dust generated when belt feeder 100 transports ore materials, dust falling device 600 includes dust falling cover 610, dust falling box 620, and a plurality of dust falling pipes 630, dust falling cover 610 is covered on belt feeder 100 and is fixedly connected with a frame of belt feeder 100, auxiliary cover 611 is fixedly mounted at one end of dust falling cover 610 close to body 210, and auxiliary cover 611 is covered at a feed inlet of body 210. The one end of many dust fall pipes 630 all with the top and the supplementary cover 611 intercommunication of dust fall cover 610 arrange, the other end of many dust fall pipes 630 with dust fall case 620 with one side intercommunication arrange, negative-pressure air fan 621 is installed to the intercommunication on the dust fall case 620, and negative-pressure air fan 621 installs the one side relative with dust fall pipe 630.
When dust device 600 carries out the dust fall to feed belt feeder 100, start negative-pressure air fan 621, negative-pressure air fan 621 will fall the air in dirt case 620 and take out, make then to fall and form the negative pressure in dirt case 620, the mouth of pipe department of many dust fall pipes 630 produces suction simultaneously, thereby make the dust that falls that dust cover 610 and supplementary cover 611 cover get into through dust fall pipe 630 and fall in dirt case 620, and then make the dust collected in dust fall case 620, finally reach the condition that reduces the dust and carry out the pollution to the air and take place.
In order to reduce the dust in the dust falling box 620 and flow out of the dust falling box 620 along with the air, a first filter plate 622 is fixedly connected in the dust falling box 620, and the first filter plate 622 is arranged perpendicular to the air flowing direction in the dust falling box 620. The bottom of dust falling box 620 is provided with a dust exhaust pipe 623 in a communicating manner, and the dust exhaust pipe 623 is arranged between first filter plate 622 and dust falling pipe 630. One end of the dust exhaust pipe 623, which is close to the dust falling box 620, is radial, one end of the dust exhaust pipe 623, which is far away from the dust falling box 620, is provided with a water tank 627, one end of the dust exhaust pipe 623, which is far away from the dust falling box 620, extends into the water tank 627, water is filled in the water tank 627, and the water in the water tank 627 sinks through the dust exhaust pipe 623 and is far away from one end of the dust falling box 620.
Referring to fig. 6 and 7, in order to recycle the small ore materials entering the dust dropping box 620, a second filter plate 624 is fixed in the dust discharging pipe 623, the second filter plate 624 is obliquely arranged, and the section of the second filter plate 624 in the oblique direction thereof is corrugated. The dust exhaust pipe 623 is communicated and fixedly provided with a material discharge pipe 625 corresponding to the second filter plate 624 relative to the lowest end of the dust falling box 620, and the material discharge pipe 625 is sleeved with a collection bag 626. The end of the discharge pipe 625 far away from the dust discharge pipe 623 is provided with a locking assembly 800 for locking the relative movement between the collection bag 626 and the discharge pipe 625, the locking assembly 800 comprises a blocking ring 810 and a locking ring 820, the blocking ring 810 is fixedly connected with the end of the discharge pipe 625 far away from the dust discharge pipe 623, the locking ring 820 comprises a locking bolt 822 and two half rings 821, one end of one half ring 821 is hinged with one end of the other half ring 821, and the locking bolt 822 is threaded through the end of the two half rings 821 far away from the hinged point. When the locking assembly 800 locks the collection bag 626, the collection bag 626 is sleeved over the discharge tube 625 while the blocking ring 810 is sleeved into the collection bag 626, then the locking ring 820 is sleeved over the discharge tube 625 while the locking ring 820 is sleeved outside the collection bag 626, the locking bolts 822 are tightened, and fixation between the collection bag 626 and the discharge tube 625 is achieved.
When dust device 600 carries out the dust fall to feed belt feeder 100, because the suction that dust fall pipe 630 formed is great, make then in the less ore raw materials on feed belt feeder 100 follow the dust entering dust falling case 620. Dust and smaller ore material entering the dust box 620 is blocked by the first filter plate 622 so that the smaller ore material and dust fall along the dust exhaust duct 623 to the second filter plate 624. The dust falling on the second filter plate 624 falls into the water tank 627 through the filter holes of the second filter plate 624, so that the dust is fused with the water in the water tank 627. The water in the water tank 627 can reduce the external air from entering the dust falling box 620 through the dust exhaust pipe 623 when the water overflows the pipe orifice of the dust exhaust pipe 623, and further the stability of the dust falling device 600 during operation is improved.
The smaller ore material falling on the second filter plate 624 slides down to the collection bag 626 along the direction of inclination of the second filter plate 624, and when the smaller ore material slides down along the direction of inclination of the second filter plate 624, the dust may follow the smaller ore material and slide down, and the corrugated second filter plate 624 can block the dust, so that the dust falls into the water tank 627 through the filter holes, and finally the possibility of reducing the dust entering the collection bag 626 is achieved.
In order to reduce the influence of dust blocking the first filter plate 622 on the air permeability of the first filter plate 622, a brush 920 for cleaning the first filter plate 622 is installed on one side of the first filter plate 622 facing the negative pressure fan 621, and the brush 920 is slidably connected to the first filter plate 622 in a direction perpendicular to the air flow in the dust settling tank 620. The side of the first filter plate 622 facing away from the negative pressure fan 621 is mounted with a scraper 930 arranged obliquely, and the scraper 930 is arranged obliquely toward the dust exhaust duct 623 in a direction away from the first filter plate 622. The scraper 930 is slidably coupled to the first filter plate 622, and a sliding direction of the scraper 930 is parallel to a sliding direction of the brush 920.
Two groups of reciprocating lead screws 910 are rotatably connected in the dust falling box 620 in a direction perpendicular to the sliding direction of the scraping plate 930, each group of reciprocating lead screws 910 comprises a lead screw body 911 and a sliding block 912, and the sliding block 912 is in reciprocating sliding connection with the lead screw body 911. One sliding block 912 is fixedly connected with the brush 920, and the other sliding block 912 is fixedly connected with the scraper 930. Dust falling box 620 is all worn out with the one end of two lead screw bodies 911, and fixedly connected with second driving motor 900 on dust falling box 620, the coaxial fixed connection of one end that dust falling box 620 was worn out with a lead screw body 911 to the output shaft of second driving motor 900. The two lead screw bodies 911 penetrate through the dust falling box 620, and are fixedly connected with belt pulleys 913 coaxially at one ends, and the two belt pulleys 913 are in transmission connection through a belt 914.
Dust gets into fall dust case 620 after, first filter 622 blocks the dust, then make the dust stop fall dust case 620 in, second driving motor 900 drives a lead screw body 911 and rotates, under the effect of belt pulley 913 and belt 914, two lead screw bodies 911 rotate in step, slider 912 and lead screw body 911 take place relative rotation simultaneously, thereby make two slider 912 drive brush 920 and scraper blade 930 and first filter 622 respectively and take place relative slip, and then make the dust on scraper blade 930 scrapes first filter 622 when brush 620 cleans filter 622. By disposing the brush 920 on the side of the first filter plate 622 facing the negative pressure fan 621, it is possible to reduce the dust moving out of the air flowing through the filter holes of the first filter plate 622 when the brush 920 cleans the first filter plate 622. The scraper 630 is arranged obliquely, so that when the scraper 630 scrapes the dust on the first filter plate 622, the dust on the scraper 630 slides down to the dust exhaust pipe 623 along the oblique direction of the scraper 630.
Referring to fig. 8 and 9, in order to reduce pollution to air caused by discharging of asphalt smoke and benzopyrene generated by the asphalt tank 400 into the air, the waste treatment device includes an exhaust pipe 710, a first filtering tank 720, a second filtering tank 730 and a chimney 740, the exhaust pipe 710 is communicated with the top of the asphalt tank 400, one end of the exhaust pipe 710, which is far away from the asphalt tank 400, is communicated with the first filtering tank 720, the second filtering tank 730 is communicated with the first filtering tank 720, and the chimney 740 is communicated with the second filtering tank 730.
In order to increase the filtering effect of the first filtering tank 720 on the asphalt smoke and the benzopyrene, an activated carbon plate 721 is clamped in the first filtering tank 720, and the activated carbon plate 721 is arranged perpendicular to the flowing direction of the air in the first filtering tank 720. A support ring 722 for supporting the activated carbon plate 721 is fixedly connected in the first filter tank 720, and one side of the support ring 722 departing from the bottom surface of the first filter tank 720 is abutted against the activated carbon plate 721. An arc-shaped elastic sheet 723 is arranged on the inner wall of the first filter box 720 corresponding to the peripheral side face of the activated carbon plate 721, the elastic sheet 723 is perpendicular to the activated carbon plate 721 and arranged in a manner that the arc center of the arc-shaped elastic sheet 723 deviates from the activated carbon plate 721, one end of the elastic sheet 723 is fixedly connected with the inner wall of the first filter box 720, and the elastic sheet 723 is abutted to the activated carbon plate 721. One end of the exhaust pipe 710, which is communicated with the first filtering tank 720, extends into the first filtering tank 720 and is bent towards the direction of the activated carbon plate 721, and water is injected into the first filtering tank 720 and passes through the activated carbon plate 721.
The asphalt smoke and benzopyrene entering the first filter tank 720 through the exhaust pipe 710 are contacted with water in the first filter tank 720, and then particles in the asphalt smoke and benzopyrene are blocked by the water, so that a small amount of particles in the asphalt smoke and benzopyrene stay in the water; the residual asphalt smoke and benzopyrene move along the direction that the air faces away from the bottom surface of the first filter box 720, so that the asphalt smoke and the benzopyrene are in contact with the activated carbon plate 721, the activated carbon plate 721 adsorbs particles and benzopyrene in the asphalt smoke, and finally the particles and the benzopyrene in the asphalt smoke are adsorbed on the activated carbon plate 721 to reduce the emission of the asphalt smoke and the benzopyrene.
In order to increase the filtering effect of the second filtering tank 730 on the asphalt smoke and the benzopyrene, a filtering mechanism 731 for further filtering the asphalt smoke and the benzopyrene is installed in the second filtering tank 730, the filtering mechanism 731 comprises a filtering membrane 732 and a rolling component 733 for rolling the filtering membrane 732, and the filtering membrane 732 is a rolled ultrafine glass fiber filtering membrane. The filtering membrane 732 is arranged perpendicular to the direction of air flow in the second filtering tank 730, the winding component 733 comprises a winding roller 734, an unwinding roller 735 and a first driving motor 736, the wound superfine glass fiber filtering membrane is sleeved on the unwinding roller 735, and the initial end of the superfine glass fiber filtering membrane is fixedly connected with the winding roller 734. The winding roller 734 and the unwinding roller 735 are arranged in parallel, the winding roller 734 and the unwinding roller 735 are both connected with the second filter box 730 in a rotating mode, one end of the winding roller 734 penetrates out of the second filter box 730, the first driving motor 736 is fixedly connected with the second filter box 730, and an output shaft of the first driving motor 736 is coaxially and fixedly connected with one end of the winding roller 734 penetrating out of the second filter box 730. To reduce the rotation of the unwinding roller 735 under its own inertia, the winding roller 734 is installed at one end of the second filter box 730 near its top, and the unwinding roller 735 is installed at one end of the second filter box 730 near its bottom.
The asphalt smoke and benzopyrene which are not filtered by the first filter tank 720 enter the second filter tank 730, so that the ultrafine glass fiber filter membrane filters particles and benzopyrene in the asphalt smoke, and the particles and benzopyrene in the asphalt smoke are adhered to the ultrafine glass fiber filter membrane. When granule and benzopyrene in the superfine glass fiber filter membrane to the asphalt smoke carry out filterable, first driving motor 736 drives wind-up roll 734 and rotates, make then wind-up roll 734 carry out the rolling to superfine glass fiber filter membrane, thereby when realizing that superfine glass fiber filter membrane carries out filterable granule and benzopyrene to the asphalt smoke, the continuous update of effect section of superfine glass fiber filter membrane, and then granule and benzopyrene in the reduction asphalt smoke block up the gas permeability that influences superfine glass fiber filter membrane to superfine glass fiber filter membrane, finally guarantee the filter effect of granule and benzopyrene in the second rose box 730 to the asphalt smoke.
Referring to fig. 8 and 10, in order to facilitate the replacement of the activated carbon plate 721 in the first filtering tank 720 and the microglass fiber filter membrane in the second filtering tank 730 by the worker, a cleaning opening 724 is formed at the top of the first filtering tank 720, and a first door 725 is hinged to the first filtering tank 720 corresponding to the cleaning opening 724. An operation opening 741 is formed in a side surface of the second filter box 730 opposite to the side surface where the first driving motor 736 is located, and a second door body 742 is hinged to the second filter box 730 corresponding to the operation opening 741. A locking piece 743 is hinged to the second door body 742, an L-shaped rod 744 is fixedly connected to the second filter tank 730, one end of the L-shaped rod 744 is vertically and fixedly connected with the second filter tank 730, a rubber pad 745 is fixedly connected to the side face, facing the second filter tank 730, of the L-shaped rod 744, and when the second door body 742 is locked, the locking piece 743 is abutted to the rubber pad 745.
When the activated carbon plate 721 needs to be replaced during work, the first door body 725 is rotated to enable the cleaning port 724 to leak out, and then a worker takes out the activated carbon plate 721; when a new activated carbon plate 721 is installed, the activated carbon plate 721 presses the elastic sheet 723, so that the elastic sheet 723 bends towards a direction away from the activated carbon plate 721, and meanwhile, the non-fixed end of the elastic sheet 723 moves towards a direction away from the fixed end, so that the activated carbon plate 721 abuts against the support ring 722. When the first filtering box 720 filters the asphalt smoke and the benzopyrene, the elastic sheet 723 can increase the stability of the activated carbon plate 721 and reduce the impact on the activated carbon plate 721 caused by too large air output of the exhaust pipe 710.
When the worker replaces the frp filter membrane in the second filter tank 730, the locking piece 743 is rotated to separate the locking piece 743 from the rubber gasket 745, the second door body 742 is rotated again, the operation port 741 leaks, and then the rolled frp filter membrane is replaced. After the superfine glass fiber filter membrane is changed and is accomplished, rotate second door body 742, rotate locking sheet 743 again, make locking sheet 743 and rubber pad 745 butt then, L type pole 744 supports rubber pad 745, thereby make rubber pad 745 apply the power of giving locking sheet 743 towards second rose box 730 direction, and then make second door body 742 tighter with second rose box 730 butt under the effect of locking sheet 743, finally reach the play department outflow of the pitch cigarette and benzopyrene between second rose box 730 and the second door body 742 in the reduction second rose box 730, increase the filter effect of second rose box 730 to pitch cigarette and benzopyrene.
The implementation principle of the energy-saving asphalt mixing station in the embodiment of the application is as follows: when the asphalt mixing station works, ore raw materials are conveyed to the body 210 through the feeding belt conveyor 100, when the feeding belt conveyor 100 conveys the ore raw materials, the dust falling cover 610 covers dust generated by the ore raw materials, and then the dust falling pipe 630 sucks dust covered by the dust falling cover 610 and the auxiliary cover 611 into the dust falling box 620, so that the pollution of the dust to air is reduced. The dust entering the dust falling box 620 through the dust falling pipe 630 is blocked by the first filter plate 622, so that the dust falls down to the dust discharging pipe 623 under the action of self gravity, and the dust enters the water tank 627 through the filter holes on the second filter plate 624 and is fused with the water in the water tank 627. When dust fall pipe 630 inhales the dust into dust falling box 620, less ore material on feeder belt 100 can be given along with air admission dust falling box 620, and first filter 622 blocks less ore material, makes then less ore material fall to dust exhaust pipe 623 under the effect of self gravity in, falls into dust exhaust pipe 623 in less ore material gets into along the incline direction of second filter 624 and collects bag 626, realizes the collection of less ore material simultaneously.
After the ore material enters the body 210, the heating mechanism 220 heats the ore material, the oil supply tank 223 supplies oil to the oil gun 222, the fuel oil in the oil gun 222 is sprayed through the dispersion block 225, when the fuel oil is sprayed through the dispersion block 225, the fuel oil drives the dispersion block 225, and then the dispersion block 225 and the oil gun 222 rotate relatively, so that the movement track of the fuel oil sprayed through the dispersion block 225 is spiral. The fan 228 provides air for the air supply tank 227, and the air in the air supply tank 227 enters the combustion cylinder 221 through the air supply pipe 229, so that multiple layers of cyclones are formed in the combustion cylinder 221, and finally, the contact area between the fuel and the air is increased, and meanwhile, the combustion sufficiency of the fuel is increased.
The dried ore material is lifted to the agitator kettle 500 by the hot aggregate elevator 300, and the asphalt material is transferred to the agitator kettle 500 by the asphalt tank 400, so that the ore material and the asphalt material are sufficiently mixed in the agitator kettle 500.
When the asphalt tank 400 heats the ore raw material, asphalt smoke and benzopyrene are generated in the asphalt tank 400, and the asphalt smoke and the benzopyrene enter the first filter tank 720 through the exhaust pipe 710. Particles and benzopyrene in the asphalt smoke are blocked by water, then partial asphalt smoke particles and benzopyrene are left in the water, and particles and benzopyrene in other asphalt smoke move towards the direction far away from the bottom surface of the first filter box 720 along with the air, so that the activated carbon plate 721 adsorbs the asphalt smoke and the benzopyrene particles. The residual asphalt smoke and benzopyrene enter the second filter tank 730 along with the air, so that the ultrafine glass fiber filter membrane filters particles and benzopyrene in the asphalt smoke, and finally the filtered air is discharged into the air through the chimney 740. When granule and benzopyrene in the superfine glass fiber filter membrane carries out filterable to the glance coal, first driving motor 736 drives wind-up roll 734 and rotates, makes the superfine glass fiber filter membrane be rolled up simultaneously to the wind-up roll 734 on, and then realizes that the superfine glass fiber filter membrane carries out filterable while to glance coal and benzopyrene, the update of superfine glass fiber filter membrane effect section, and then increases the filter effect of superfine glass fiber filter membrane to glance coal and benzopyrene.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An energy-saving asphalt mixing station comprises a feeding belt conveyor (100), a drying roller (200), a hot aggregate elevator (300), an asphalt tank (400) and a stirring pot (500), wherein the discharge end of the feeding belt conveyor (100) is positioned at the feed inlet of the drying roller (200), the feeding belt conveyor (100) is used for conveying ore raw materials to the drying roller (200), the feed inlet of the hot aggregate elevator (300) is positioned at the discharge outlet of the drying roller (200), the hot aggregate elevator (300) is used for conveying the ore raw materials in the drying roller (200) to the stirring pot (500), the discharge pipe of the asphalt tank (400) is communicated with the stirring pot (500), and the asphalt tank (400) is used for providing asphalt raw materials for the stirring pot (500); the method is characterized in that: the drying drum (200) comprises a body (210) and a heating mechanism (220), the heating mechanism (220) comprises a combustion cylinder (221), an oil gun (222), an oil supply tank (223) and an air supply assembly (224), the air outlet end of the combustion cylinder (221) is communicated with the body (210), the oil gun (222) is arranged in the combustion cylinder (221), an oil outlet of the oil gun (222) is arranged towards the body (210), the oil supply tank (223) is communicated with the oil gun (222), the air supply assembly (224) comprises an air supply box (227), a fan (228) and a plurality of air supply pipes (229), the fan (228) is communicated with the air supply box (227), the air supply pipes (229) are communicated with the combustion cylinder (221) and the air supply pipes (229) are tangential to the inner wall of the combustion cylinder (221), and a plurality of the gas supply pipes (229) are sequentially arranged in a direction away from the body (210).
2. An energy-saving asphalt mixing station according to claim 1, characterized in that: one end of the plurality of air supply pipes (229) close to the combustion cylinder (221) is bent towards the direction of the body (210).
3. An energy-saving asphalt mixing station according to claim 1, characterized in that: the oil gun is characterized in that a conical dispersing block (225) is arranged at an oil outlet of the oil gun (222), the dispersing block (225) is rotatably connected with the oil gun (222), one end, close to a self conical bottom, of the dispersing block (225) is abutted to the oil outlet of the oil gun (222) and can relatively rotate, a plurality of through holes (226) with arc-shaped axial sections are formed in the dispersing block (225), and arc centers of the through holes (226) with arc-shaped axial sections face into the dispersing block (225).
4. An energy-saving asphalt mixing station according to claim 1, characterized in that: still include dust device (600), dust device (600) are including falling dust cover (610), dust fall case (620) and many dust fall pipe (630), fall dust cover (610) cover and establish on feed belt feeder (100), many the one end of dust fall pipe (630) all sets up with the top intercommunication of dust fall cover (610), many the other end and the dust fall case (620) intercommunication setting of dust fall pipe (630), it is provided with negative-pressure air fan (621) to fall the intercommunication on dust case (620).
5. An energy-saving asphalt mixing station according to claim 4, characterized in that: one end of the dust falling cover (610) close to the body (210) is fixedly provided with an auxiliary cover (611), and the auxiliary cover (611) covers the feed inlet of the body (210).
6. An energy-saving asphalt mixing station according to claim 5, characterized in that: many dust fall pipe (630) all are connected in dust fall case (620) and negative-pressure air fan (621) relative one end, be provided with first filter (622) in dust fall case (620), first filter (622) perpendicular to dust fall case (620) air current flow direction sets up.
7. An energy-saving asphalt mixing station according to claim 6, characterized in that: the bottom intercommunication of dust falling box (620) is provided with dust exhaust pipe (623), dust exhaust pipe (623) set up between first filter (622) and dust fall pipe (630), the one end that dust exhaust pipe (623) are close to dust falling box (620) is radial, the one end that dust exhaust pipe (623) kept away from dust falling box (620) is provided with water tank (627), the one end that dust exhaust pipe (623) kept away from dust falling box (620) extends into in water tank (627).
8. An energy-saving asphalt mixing station according to claim 7, characterized in that: be provided with second filter (624) in dust exhaust pipe (623), second filter (624) slope sets up, dust exhaust pipe (623) correspond second filter (624) and are provided with row material pipe (625) for the lowest end intercommunication of dust falling box (620), it is equipped with collection bag (626) to arrange the cover on material pipe (625).
9. An energy-saving asphalt mixing station according to claim 1, characterized in that: still include exhaust treatment device (700), waste treatment device includes blast pipe (710), first rose box (720), second rose box (730) and chimney (740), the top intercommunication of blast pipe (710) and pitch jar (400), the one end and the first rose box (720) intercommunication setting of pitch jar (400) are kept away from in blast pipe (710), first rose box (720) and second rose box (730) intercommunication setting, chimney (740) and second rose box (730) intercommunication setting.
10. An energy efficient asphalt mixing station according to claim 9, characterized in that: a filtering mechanism (731) for filtering the asphalt smoke and the benzopyrene is arranged in the second filtering box (730), the filtering mechanism (731) comprises a filtering membrane (732) and a rolling component (733) for rolling the filtering membrane (732), the filtering membrane (732) is arranged perpendicular to the direction of air flow in the second filtering tank (730), the winding assembly (733) comprises a winding roller (734), an unwinding roller (735) and a first driving motor (736), the winding roller (734) and the unwinding roller (735) are arranged in parallel, and the winding roller (734) and the unwinding roller (735) are both rotationally connected with the second filter tank (730), one end of the winding roller (734) penetrates out of the second filter tank (730), the first driving motor (736) is fixedly connected with the second filter tank (730), an output shaft of the first driving motor (736) is in transmission connection with one end, penetrating out of the second filter box (730), of the take-up roller (734).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113605175A (en) * | 2021-07-08 | 2021-11-05 | 江苏徐工工程机械研究院有限公司 | Drying system, control method and asphalt mixing station |
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| CN112211068B (en) | 2022-03-22 |
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