CN110917941B - Old asphalt mixture oil-stone separation device with biological oil as solvent oil and use method - Google Patents

Old asphalt mixture oil-stone separation device with biological oil as solvent oil and use method Download PDF

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Publication number
CN110917941B
CN110917941B CN201911331103.5A CN201911331103A CN110917941B CN 110917941 B CN110917941 B CN 110917941B CN 201911331103 A CN201911331103 A CN 201911331103A CN 110917941 B CN110917941 B CN 110917941B
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China
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oil
asphalt mixture
biological
vibrating
conveyor belt
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CN201911331103.5A
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CN110917941A (en
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吕松涛
刘超超
屈芳婷
郑健龙
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Changsha University of Science and Technology
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Changsha University of Science and Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D33/00Filters with filtering elements which move during the filtering operation
    • B01D33/01Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
    • B01D33/03Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
    • B01D33/0346Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D33/00Filters with filtering elements which move during the filtering operation
    • B01D33/70Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/74Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging filtrate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D33/00Filters with filtering elements which move during the filtering operation
    • B01D33/70Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/76Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/805Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle
    • B01F27/806Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle with vertical displacement of the stirrer, e.g. in combination with means for pivoting the stirrer about a vertical axis in order to co-operate with different receptacles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71Feed mechanisms
    • B01F35/717Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71705Feed mechanisms characterised by the means for feeding the components to the mixer using belts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75Discharge mechanisms
    • B01F35/754Discharge mechanisms characterised by the means for discharging the components from the mixer
    • B01F35/7548Discharge mechanisms characterised by the means for discharging the components from the mixer using tilting or pivoting means for emptying the mixing receptacle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80Forming a predetermined ratio of the substances to be mixed
    • B01F35/88Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/883Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using flow rate controls for feeding the substances
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/38Mixing of asphalt, bitumen, tar or pitch or their ingredients
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2201/00Details applicable to machines for screening using sieves or gratings
    • B07B2201/04Multiple deck screening devices comprising one or more superimposed screens

Abstract

The invention discloses an old asphalt mixture oil-stone separation device taking biological oil as solvent oil and a use method thereof, wherein the old asphalt mixture oil-stone separation device comprises a biological oil supply mechanism, a waste asphalt mixture conveyor belt, an oil-stone separation generator, an oil-stone filtering mechanism, an aggregate conveyor belt after oil-stone separation and an aggregate grading and screening mechanism; the left and right sides of the surface of the bearing net in the oilstone filtering mechanism are high and low, and the gradient is 3 percent; the multi-layer vibrating screen in the aggregate classifying and screening mechanism is characterized in that a plurality of round holes are uniformly formed in the surface of the vibrating screen, the aperture of the vibrating screen is gradually reduced from top to bottom, and the vibrating screen is of a conical surface structure with the gradient of 3%. The biological oil is adopted to dissolve old asphalt in the waste asphalt mixture, so that the oil-stone separation of the waste asphalt mixture is realized economically and efficiently, the aggregate after the oil-stone separation can be directly used as recycled aggregate for 100%, the biological oil obtained by filtering is not required to be extracted, the asphalt is recycled and stored by a biological oil recycling tank, 100% of the biological oil is used for preparing raw materials by the biological asphalt, re-extraction is not required, and the process is simple.

Description

Old asphalt mixture oil-stone separation device with biological oil as solvent oil and use method
Technical Field
The invention belongs to the technical field of road engineering, and relates to an old asphalt mixture oil-stone separation device taking biological oil as solvent oil and a use method thereof.
Background
It is estimated that 1.3 ten thousand kilometers expressways and nearly 4 ten thousand kilometers common national provinces need major and middle-level modification or reconstruction and expansion every year in China, and a large amount of milling materials of asphalt mixture are generated. If the water-soluble polymer can be efficiently utilized, the water-soluble polymer has great economic and environmental benefits. For this reason, the national emphasis development program has set "solid waste recycling" as an emphasis special project.
Early, old asphalt pavement milling materials are often regarded as engineering waste due to technical reasons and the like, which is not only waste of geotechnical materials, but also serious environmental pollution. With the development of technology and the continuous improvement of environmental protection requirements, waste asphalt mixtures are gradually reused in road construction in various forms. The common method for utilizing the waste asphalt mixture is to directly mix a small amount of the waste asphalt mixture into a new material, and has the defect that the mixing amount of the waste asphalt mixture needs to be strictly controlled, and the mixing amount greatly influences the road performance of the asphalt mixture and is commonly used in modified asphalt mixtures, such as rubber modified asphalt mixtures mixed with the waste asphalt mixture. Various regeneration technologies are gradually developed recently, and chemical components of old asphalt are regulated by doping a regeneration agent and an activating agent, so that the related performance of the old asphalt is recovered, but the old interface of aggregate-asphalt is not repaired by the regeneration technology, and the regenerated asphalt mixture still has a weak point.
The oil-stone separation technology is to dissolve asphalt in the waste asphalt mixture through solvent oil, so that aggregates are separated for recycling, and asphalt in the extracted solvent oil can be recycled through processing. The oil-stone separation technology can effectively recycle the waste asphalt mixture. However, the existing oil-stone separation equipment and technology cannot economically and efficiently realize the oil-stone separation of the waste asphalt mixture. The common oil-stone separation method generally adopts solvent oil to soak waste asphalt in a large tank, each tank needs about two days for treatment, the working efficiency is extremely low, the concentration of asphalt in the solvent oil is extremely low, the difficulty of extracting asphalt again from the solvent oil is high, and the process is complex.
The biological oil is a renewable material prepared by pyrolysis of plant waste residues, and has great similarity of chemical components and molecular structures with petroleum asphalt, so that the biological oil has good compatibility with asphalt. Meanwhile, the biological oil dissolved with the old asphalt can be directly used as a preparation raw material of the biological asphalt, the asphalt in the biological oil is not required to be extracted again, and the process for recycling the old asphalt is simplified. Based on this, this patent provides a old asphalt mixture oil stone separator that bio-oil is solvent oil.
Disclosure of Invention
In order to achieve the purpose, the invention provides the old asphalt mixture oil-stone separation device with biological oil as solvent oil, which solves the problems that oil-stone separation equipment and technology in the prior art cannot realize the oil-stone separation of the old asphalt mixture economically and efficiently, the concentration of asphalt in the solvent oil is very low, the difficulty of re-extracting asphalt from the solvent oil is high, and the process is complex.
The invention also aims to provide a using method of the old asphalt mixture oil-stone separation device with biological oil as solvent oil.
In order to solve the technical problems, the invention adopts the technical scheme that the old asphalt mixture oil-stone separation device with biological oil as solvent oil comprises: the device comprises a bio-oil supply mechanism, a waste asphalt mixture conveyor belt, an oil-stone separation generator, an oil-stone filtering mechanism, an oil-stone separated aggregate conveyor belt and an aggregate grading and screening mechanism;
the biological oil supply mechanism consists of a biological oil tank, an oil delivery pipe and a flow meter; the biological oil tank is welded with an interface and is connected with an oil delivery pipe, the oil delivery pipe is used for communicating the biological oil tank with the stirring pot, and a flow meter is arranged on the oil delivery pipe;
the waste asphalt mixture conveyor belt is positioned on the right side of the stirring pot, is supported by the two supporting structures, and the left end of the waste asphalt mixture conveyor belt is positioned right above the right side of the stirring pot and is not in contact with the stirring pot;
the oil-stone separation generator consists of a stirring propeller, a stirring pot and a motor; the stirring propeller consists of a connecting rod, a stirring propeller and a synergistic propeller, the stirring propeller is welded at the bottom of the connecting rod, a plurality of synergistic propellers are welded on the connecting rod, the top of the connecting rod is connected with an output shaft of a motor, and the motor is fixed on the lower surface of the pot cover; the right side of the pot cover is smaller than the opening of the stirring pot; the pot cover is connected with the operating platform through a lifting rod; the stirring pot body is fixed at the right end of the electric rotating shaft, the left end of the electric rotating shaft is connected to the operating table, and the bottom of the stirring pot is positioned above the receiving hopper a;
the oil stone filtering mechanism comprises a receiving hopper a, an oil receiving barrel and a biological oil recovery tank; the inside of the receiving hopper a is sequentially provided with a bearing net and a filter cloth from bottom to top; the filter cloth is fixedly paved on the upper surface of the bearing net, the left side of the upper surface of the bearing net is high and the right side of the receiving hopper a is low, and a discharge hole formed in the right side of the receiving hopper a and the right end of the bearing net are positioned at the same height; a valve is arranged on the discharge hole; round holes are uniformly formed in the conical surface at the bottom of the receiving hopper, and the diameter corresponding to the projection surface of the receiving hopper at the round hole is smaller than the diameter of the oil receiving barrel right below the receiving hopper a; a vibrating device a is arranged at the bottom end of the inside of the oil receiving barrel, and the vibrating device a is connected with the oil receiving hopper a through a vibrating rod a; the upper surface of the vibration device a is horizontal, the edge of the upper surface is in contact with the side wall of the oil receiving barrel without a gap, the oil receiving barrel is communicated with the biological oil recovery tank through the oil outlet pipe, and the lower side of the oil outlet pipe and the upper surface of the vibration device a are at the same height; an oil-stone separated aggregate conveyor belt is arranged right below the discharge hole, the right end of the oil-stone separated aggregate conveyor belt is arranged right above the screening box receiving hopper b, and the left end of the oil-stone separated aggregate conveyor belt is arranged at the left side of the discharge hole; the aggregate conveyor belt is supported by two supporting structures after oil-stone separation;
the aggregate classifying and screening mechanism comprises a screening box, wherein a conical receiving hopper b is arranged at the top of the screening box, a vibrating device b is arranged at the bottom end of the inside of the screening box, the upper surface of the vibrating device b is horizontal, the edge of the upper surface of the vibrating device b is in contact with the side wall of the screening box without a gap, a plurality of layers of vibrating screens are arranged above the vibrating device b in the screening box, a plurality of round holes are uniformly formed in the surface of the vibrating screens, and the aperture of the vibrating screens gradually decreases from top to bottom; the vibrating screen is of a conical surface structure with the gradient of 3%, the vibrating device is provided with a vibrating rod b, the vibrating rod b extends out of the upper surface of the vibrating device b, the vibrating rod b is welded and fixed with the conical tops of all layers of vibrating screens respectively, screening openings are arranged at intervals on the left side and the right side of the screening box, a valve is arranged on each screening opening, the heights of the screening openings and the edges of the vibrating screen before upward vibration are the same, and a screening opening is arranged at the equal height of each layer of the edges of the vibrating screen before vibration.
Further, the oil delivery pipe is a hose and is detachable, and the bottom of the biological oil tank is higher than the upper end of the stirring pot.
Further, one of the two supporting structures is arranged at the right end of the waste asphalt mixture conveyor belt, and the horizontal distance between the two supporting structures is 2/3 of the distance between the two ends of the waste asphalt mixture conveyor belt; and a baffle plate is welded on the right-end supporting structure and consists of two parallel inclined plates and a vertical plate, one end of the inclined plate at the bottom is welded on the supporting structure, the other end of the inclined plate is welded on the vertical plate, one end of the other inclined plate is welded on the vertical plate, and the other end of the other inclined plate is positioned at a position 1mm above the waste asphalt mixture conveying belt.
Further, the stirring propeller is wedged with the bottom of the stirring pot to form an X shape, and the stirring pot has the resistance wire heating and heat insulation effects.
Further, the gradient of the bearing net is 3%, a supporting rod is arranged below the bearing net in the receiving hopper a, the supporting rod is contacted with the conical surface of the receiving hopper, a valve is arranged on the oil outlet pipe, one of the two supporting structures is arranged at the left end of the aggregate conveyor belt after oil-stone separation, and the horizontal distance between the two supporting structures is 2/3 of the distance between the two ends of the aggregate conveyor belt after oil-stone separation; and a baffle plate is welded on the left end supporting structure and consists of two parallel inclined plates and a vertical plate, one end of the inclined plate at the bottom is welded on the supporting structure, the other end of the inclined plate is welded on the vertical plate, one end of the other inclined plate is welded on the vertical plate, and the other end of the other inclined plate is positioned at a position 1mm above the oil-stone separation rear material collecting conveyor belt.
Further, valves are arranged at the screening box and the receiving hopper b; the vertical spacing of the vibrating screen from top to bottom is continuously reduced.
Further, the distance between the edge of the vibrating screen and the side wall of the screening box is 1mm.
The application method of the old asphalt mixture oil-stone separation device with biological oil as solvent oil comprises the following steps:
step S1, after the amount of the biological oil is determined according to the washing amount, a switch of a flow counter is turned on, the injection amount is controlled by the flow counter, the biological oil with the required amount is injected into a stirring pot through an oil delivery pipe, the biological oil is heated to 100 ℃, and after the biological oil is conveyed, the switch on the flow counter is turned off;
s2, controlling the lifting rod to descend through the operating platform, conveying the stirring propeller into the stirring pot, and covering the pot cover on the stirring pot;
s3, turning on a switch, rotating a waste asphalt mixture conveyor belt, conveying the waste asphalt mixture into a stirring pot filled with biological oil at 100 ℃ through the waste asphalt mixture conveyor belt, and starting a motor to stir at a speed of 20r/min by a stirring propeller;
s4, randomly scooping the waste asphalt mixture in the pot, observing whether the asphalt on the surface of the waste asphalt mixture falls off completely, and if the asphalt is not completely fallen off, continuing stirring until the old asphalt on the surface of the waste asphalt mixture falls off completely;
s5, when old asphalt on the surface of the waste asphalt mixture falls off completely, controlling the lifting rod to lift to return to the initial position through the operating platform, closing the motor, and stopping rotation of the stirring propeller;
s6, controlling the electric rotating shaft through an operation table, and pouring the mixture in the pot into the receiving hopper a;
step S7, starting a vibrating device a, vibrating a vibrating rod a to vibrate up and down, enabling a receiving hopper a to vibrate up and down along with the vibrating rod a, enabling biological oil in the mixture to flow down from the receiving hopper a to the upper surface of the vibrating device a in an oil receiving barrel, opening a valve of an oil outlet pipe, enabling the biological oil to flow into a biological oil recovery tank, starting the vibrating device a to start a valve on a discharge hole after 5min, starting an oil-stone separated aggregate conveyor belt, opening a valve on a receiving hopper b, and starting the vibrating device b to vibrate up and down and rotate at the same time;
and S8, opening a valve of a screening opening after the aggregate conveyor belt rotates for 5min after the oil-stone separation, and finishing the screening of aggregates with different particle sizes.
Furthermore, in the step S8, air-drying or drying treatment is required for each bone aggregate before the regenerated aggregate is split-charged.
The beneficial effects of the invention are as follows:
based on better compatibility of biological oil and asphalt, the biological oil is adopted to dissolve old asphalt in the waste asphalt mixture, so as to realize oil-stone separation of the waste asphalt mixture; 100% of the separated aggregate can be directly utilized as new material; the biological oil dissolved with the old asphalt can be used as a raw material for preparing the biological asphalt, thereby realizing the efficient utilization of the old asphalt.
Compared with the existing oil-stone separation device, the device can economically and efficiently realize the oil-stone separation of the waste asphalt mixture, the biological oil obtained by filtration is recovered and stored by the biological oil recovery tank, and the biological oil is used as the raw material for preparing the biological asphalt, and the working procedure is simple. Set up the bearing net that the slope was placed, auxiliary vibration device, the efficient realization solid-liquid separation, 3% slope of bearing net, under this slope, the aggregate on the bearing net both can be on the bearing net evenly distributed, can not accumulate in the lower side of right-hand member, simultaneously can fall to the discharge gate voluntarily owing to the gravity aggregate of aggregate when vibrating. Through setting up the simultaneous screening of aggregate that the multilayer shale shaker can realize equidimension, from last interval down the shale shaker constantly reduces, the space in the rational utilization screening case to save material environmental protection.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of the device of the present invention.
Fig. 2 is a comparison of the waste asphalt mixture before and after oil-stone separation by the method.
In the figure, 101, an operating table, 102, lifting rods, 103, stirring impellers, 104, an electric rotating shaft, 105, a stirring pot, 106, a flow counter, 107, a biological oil tank, 108, a waste asphalt mixture conveyor belt, 109, an oil delivery pipe, 110, a pot cover, 111, an oil and stone separated aggregate conveyor belt, 112, a motor, 201, a receiving hopper a, 202, a filter cloth, 203, a bearing net, 204, a vibrating rod a, 205, an oil receiving bucket, 206, a biological oil recovery tank, 207, an oil outlet pipe, 208, a discharge port, 209, a vibrating device a, 301, a screening box, 302, a vibrating device b, 303, a receiving hopper b, 304, a screening port, 305, a vibrating screen, 306, and a vibrating rod b.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The old asphalt mixture oil-stone separation device with biological oil as solvent oil comprises: a bio-oil supply mechanism, a waste asphalt mixture conveyor belt 108, an oil-stone separation generator, an oil-stone filtering mechanism, an aggregate conveyor belt 111 after oil-stone separation and an aggregate classifying and screening mechanism;
the biological oil supply mechanism consists of a biological oil tank 107, an oil delivery pipe 109 and a flow meter 106; the biological oil tank 107 is welded with an interface and an oil delivery pipe 109, the oil delivery pipe 109 communicates the biological oil tank 107 with the stirring pan 105, a flow meter 106 is arranged on the oil delivery pipe 109, the oil delivery pipe 109 is a hose, the biological oil tank 107 can be disassembled, the required biological oil can be stored, and the bottom of the biological oil tank 107 is higher than the upper end of the stirring pan 105;
the waste asphalt mixture conveyor belt 108 is positioned on the right side of the stirring pot 105, the waste asphalt mixture conveyor belt 108 is supported by two supporting structures, one supporting structure is positioned at the right end of the waste asphalt mixture conveyor belt 108, and the horizontal distance between the two supporting structures is 2/3 of the distance between the two ends of the waste asphalt mixture conveyor belt 108; a baffle is welded on the right end supporting structure and consists of two parallel inclined plates and a vertical plate, one end of the inclined plate at the bottom is welded on the supporting structure, the other end is welded on the vertical plate, one end of the other inclined plate is welded on the vertical plate, and the other end is positioned at a position 1mm above the waste asphalt mixture conveying belt 108; the left end of the waste asphalt mixture conveying belt 108 is positioned right above the right side of the stirring pot 105 and is not contacted with the stirring pot 105; the waste asphalt mixture conveyor belt 108 can directly convey quantitative waste asphalt mixture from the waste pile to the stirring pot 105, so that manual transportation is reduced;
the oil-stone separation generator consists of a stirring propeller 103, a stirring pot 105 and a motor 112; the stirring propeller 103 consists of a connecting rod, a stirring propeller and a synergistic propeller, the stirring propeller is welded at the bottom of the connecting rod, the stirring propeller is wedged with the bottom of the stirring pot 105 to form an X shape, the stirring propeller can prevent materials sinking to the bottom of the pot from being stirred, a plurality of synergistic propellers are welded on the connecting rod, the synergistic propeller can increase stirring effect, asphalt on the aggregate surface is accelerated to peel off and dissolve, the top of the connecting rod is connected with an output shaft of the motor 112, and the motor 112 is fixed on the lower surface of the pot cover 110; the motor 112 rotates to drive the connecting rod to rotate, so as to drive the propeller on the connecting rod to rotate; the right side of the pot cover 110 is smaller than the opening of the stirring pot 105 so as to leave a space for the waste asphalt mixture conveyor belt 108 to convey materials for feeding; the pot cover 110 is connected with the operating platform 101 through the lifting rod 102; the stirring pot 105 has a resistance wire heating and heat preservation effect, and the heating and heat preservation temperature is controlled through the operation table 101 so as to ensure the operation temperature in the oil-stone separation process; the stirring pot 105 is fixed at the right end of the electric rotating shaft 104, the left end of the electric rotating shaft 104 is connected to the operating platform 101, and the bottom of the stirring pot 105 is positioned above the receiving hopper a201;
the oil stone filtering mechanism comprises a receiving hopper a201, an oil receiving barrel 205 and a biological oil recovery tank 206; a bearing net 203 and a filter cloth 202 are sequentially arranged in the receiving hopper a201 from bottom to top; the filter cloth 202 is fixedly paved on the upper surface of the bearing net 203, the upper surface of the bearing net 203 is high on the left and low on the right, the gradient is 3%, and a discharge hole 208 formed on the right side of the receiving hopper a201 and the right end of the bearing net 203 are positioned at the same height; a valve is arranged on the discharge hole 208; a supporting rod is arranged below the bearing net 203 in the receiving hopper a201, the supporting rod is contacted with the conical surface of the receiving hopper, round holes are uniformly formed in the conical surface at the bottom of the receiving hopper, the diameter corresponding to the projection surface of the receiving hopper at the round hole part is smaller than the diameter of the oil receiving barrel 205 positioned right below the receiving hopper a201, and liquid in the receiving hopper a201 can flow down from the round holes to fall into the oil receiving barrel 205; a vibrating device a209 is arranged at the bottom end inside the oil receiving barrel 205, and the vibrating device a209 is connected with the oil receiving hopper a201 through a vibrating rod a 204; the upper surface of the vibration device a209 is horizontal, the edge of the upper surface is in contact with the side wall of the oil receiving barrel 205 without a gap, the oil receiving barrel 205 is communicated with the biological oil recovery tank 206 through the oil outlet pipe 207, a valve is arranged on the oil outlet pipe 207, and the lower side of the oil outlet pipe 207 and the upper surface of the vibration device a209 are at the same height; directly below the discharge hole 208 is an oil-stone separated aggregate conveyor belt 111, the right end of the oil-stone separated aggregate conveyor belt 111 is directly above the receiving hopper b303 of the screening box 301, and the left end is at the left side of the discharge hole 208; the aggregate conveyor belt 111 after oil-stone separation is supported by two support structures; one support structure is arranged at the left end of the aggregate conveyor belt 111 after oil-stone separation, and the horizontal distance between the two support structures is 2/3 of the distance between the two ends of the aggregate conveyor belt 111 after oil-stone separation; a baffle is welded on the left end supporting structure and consists of two parallel inclined plates and a vertical plate, one end of the inclined plate at the bottom is welded on the supporting structure, the other end of the inclined plate is welded on the vertical plate, one end of the other inclined plate is welded on the vertical plate, and the other end of the other inclined plate is positioned at a position 1mm above the oil-stone separated aggregate conveyor belt 111;
the aggregate classifying and screening mechanism comprises a screening box 301, wherein a conical receiving hopper b303 is arranged at the top of the screening box 301, and valves are arranged at the screening box 301 and the receiving hopper b 303; the vibrating device b302 is arranged at the bottom end inside the screening box 301, the upper surface of the vibrating device b302 is horizontal, the edge of the upper surface of the vibrating device b302 is in contact with the side wall of the screening box 301 without gaps, a plurality of layers of vibrating screens 305 are arranged above the vibrating device b302 inside the screening box 301, a plurality of round holes are uniformly formed in the surface of the vibrating screens 305, the pore diameter of the vibrating screens 305 is gradually reduced from top to bottom, the vertical distance between the vibrating screens 305 is also continuously reduced, and therefore the size of the screening box 301 can be reasonably reduced by utilizing the inner space of the screening box 301; the vibrating screen 305 is of a conical surface structure with a gradient of 3%, a vibrating rod b306 is arranged on the vibrating device, the vibrating rod b306 extends out of the upper surface of the vibrating device b302, the vibrating rod b306 is respectively welded and fixed with the conical top of each layer of the vibrating screen 305, the vibrating rod b306 can vibrate up and down and can rotate, and the distance between the edge of the vibrating screen 305 and the side wall of the screening box 301 is 1mm; screening openings 304 are arranged at intervals on the left side and the right side of the screening box 301, valves are arranged on the screening openings 304, the heights of the screening openings 304 are the same as the heights of the edges of the vibrating screen 305 before upward vibration, and a screening opening 304 is arranged at the equal height position of the edge of each layer of the vibrating screen 305 before vibration.
The old asphalt mixture oil-stone separation device with biological oil as solvent oil is described as follows:
the circuit connection control part involved in the device belongs to the prior art and is not described in detail. All valves are in a closed state prior to operation with the device. The stirring rotor is located above the stirring pot 105. The end parts of the aggregate conveyor belt 111 after the waste asphalt mixture conveyor belt 108 and the oil stone are separated are respectively provided with the baffle plates, so that materials on the conveyor belt can be prevented from sliding off from the conveyor belt, the two inclined plates are arranged on the baffle plates, so that the materials are placed on the conveyor belt and conveyed along with the rotation of the conveyor belt, and if the inclined plates on the lower side are only arranged on the baffle plates, the materials fall at corners formed by the conveyor belt and the baffle plates, and the conveying is inconvenient and the rotation of the conveyor belt can be influenced. Before vibrating screen 305 vibrates up and down, the edges of vibrating screen 305 are at the same height as screen openings 304. The distance of each upward vibration of the vibrating rod b306 is smaller than the minimum value of the layer spacing of the vibrating screen 305 in the vertical direction, so that the aggregate of the vibrating screen 305 in the layer cannot go out from the upper layer.
The application method of the old asphalt mixture oil-stone separation device with biological oil as solvent oil comprises the following steps:
step S1, after the amount of the biological oil is determined according to the washing amount, a switch of a flow counter 106 is turned on, the injection amount is controlled by the flow counter 106, the biological oil with the required amount is injected into a stirring pot 105 through an oil delivery pipe 109, the biological oil is heated to 100 ℃, and after the biological oil is conveyed, the switch on the flow counter 106 is turned off; the operation temperature is comprehensively obtained by the oil-stone separation effect and the energy consumption condition of the invention related to the example, and aiming at the biological oil adopted by the invention, if the temperature is lower than 100 ℃, the biological oil is adopted to dissolve the old asphalt, and the old asphalt is harder, so that the time required for peeling the old asphalt from the aggregate can be prolonged, the oil-stone separation efficiency is influenced, and the energy consumption is increased; when the temperature is higher than 100 ℃, the biological oil can gradually boil and generate smoke, which is not beneficial to construction safety and environment protection and is not used for heating at the temperature;
step S2, the lifting rod 102 is controlled to descend through the operation table 101, the stirring propeller 103 is sent into the stirring pot 105, and the pot cover 110 covers the stirring pot 105;
step S3, turning on a switch, rotating a waste asphalt mixture conveyor 108, conveying the waste asphalt mixture into a stirring pot 105 filled with biological oil at 100 ℃ through the waste asphalt mixture conveyor 108, and starting a motor 112 to stir the stirring propeller 103 at a speed of 20r/min, wherein solution splashing does not occur at the rotating speed, and the contact between the biological oil and the waste asphalt mixture can be accelerated to the greatest extent;
s4, randomly scooping the waste asphalt mixture in the pot, observing whether the asphalt on the surface of the waste asphalt mixture falls off completely, and if the asphalt is not completely fallen off, continuing stirring until the old asphalt on the surface of the waste asphalt mixture falls off completely;
step S5, when old asphalt on the surface of the waste asphalt mixture falls off completely, the lifting rod 102 is controlled by the operating platform 101 to lift to the initial position, the motor 112 is turned off, and the stirring rotor 103 stops rotating;
step S6, controlling the electric rotating shaft 104 through the operating platform 101, and pouring the mixture in the pot into the receiving hopper a201;
step S7, starting a vibrating device a209, vibrating a204 to vibrate up and down, enabling a receiving hopper a201 to vibrate up and down along with the vibrating rod a204, enabling biological oil in the mixture to flow down from the receiving hopper a201 to the upper surface of the vibrating device a209 in an oil receiving barrel 205, opening a valve of an oil outlet pipe 207, enabling the biological oil to flow into a biological oil recovery tank 206, starting the vibrating device a209 for 5min, opening a valve on a discharge hole 208, starting an aggregate conveyor belt 111 after oil-stone separation, opening a valve on a receiving hopper b303, and starting a vibrating device b302, wherein the vibrating device b302 rotates while vibrating up and down;
and S8, after the oil-stone separation, the aggregate conveyor belt 111 rotates for 5min, and then a valve of the screening opening 304 is opened, so that aggregate screening with different particle sizes is completed. And before the regenerated aggregate is subpackaged in the step S8, air drying or drying treatment is required to be carried out on each grade of bone aggregate. The separated aggregate is high-quality recycled aggregate and can be directly utilized like new materials.
The mixture poured into the receiving hopper a201 is divided into two parts, wherein one part is biological oil containing asphalt, and the other part is aggregate. The agitator tank 105 is tilted by the electric rotating shaft 104.
Based on better compatibility of the bio-oil and the asphalt, the bio-oil is adopted to dissolve the asphalt in the waste asphalt mixture, and the asphalt dissolution is accelerated by continuous stirring, and the obtained effect is shown in figure 2. The left side of the waste asphalt mixture is the mineral aggregate before treatment and the right side of the waste asphalt mixture is any mineral aggregate after treatment, and the waste asphalt mixture is the mineral aggregate before and after treatment, as shown in figure 2. As is obvious from the right, the waste asphalt on the surface of the mineral aggregate is basically cleaned, and the oil-stone separation is completed.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims (9)

1. The old asphalt mixture oil-stone separation device with biological oil as solvent oil is characterized by comprising: the device comprises a bio-oil supply mechanism, a waste asphalt mixture conveyor belt (108), an oil-stone separation generator, an oil-stone filtering mechanism, an oil-stone separated aggregate conveyor belt (111) and an aggregate grading and screening mechanism;
the biological oil supply mechanism consists of a biological oil tank (107), an oil delivery pipe (109) and a flow meter (106); the biological oil tank (107) is welded with an interface and is connected with an oil delivery pipe (109), the oil delivery pipe (109) is used for communicating the biological oil tank (107) with the stirring pot (105), and the oil delivery pipe (109) is provided with a flow meter (106);
the waste asphalt mixture conveyor belt (108) is positioned on the right side of the stirring pot (105), the waste asphalt mixture conveyor belt (108) is supported by two supporting structures, and the left end of the waste asphalt mixture conveyor belt (108) is positioned right above the right side of the stirring pot (105) and is not in contact with the stirring pot (105);
the oil-stone separation generator consists of a stirring propeller (103), a stirring pot (105) and a motor (112); the stirring propeller (103) consists of a connecting rod, a stirring propeller and a synergistic propeller, the stirring propeller is welded at the bottom of the connecting rod, a plurality of synergistic propellers are welded on the connecting rod, the top of the connecting rod is connected with an output shaft of a motor (112), and the motor (112) is fixed on the lower surface of the pot cover (110); the right side of the pot cover (110) is smaller than the opening of the stirring pot (105); the pot cover (110) is connected with the operating platform (101) through the lifting rod (102); the stirring pot (105) body is fixed at the right end of the electric rotating shaft (104), the left end of the electric rotating shaft (104) is connected to the operating platform (101), and the bottom of the stirring pot (105) is positioned above the receiving hopper a (201);
the oil stone filtering mechanism comprises a receiving hopper a (201), an oil receiving barrel (205) and a biological oil recovery tank (206); a bearing net (203) and a filter cloth (202) are sequentially arranged in the receiving hopper a (201) from bottom to top; the filter cloth (202) is fixedly paved on the upper surface of the bearing net (203), the left side of the upper surface of the bearing net (203) is high, the right side of the upper surface of the bearing net is low, and a discharge hole (208) formed in the right side of the receiving hopper a (201) and the right end of the bearing net (203) are positioned at the same height; a valve is arranged on the discharge hole (208); round holes are uniformly formed in the conical surface of the bottom of the receiving hopper a (201), and the area corresponding to the projection surface of the receiving hopper at the part where the round holes are formed is smaller than the area of the oil receiving barrel (205) positioned right below the receiving hopper a (201); a vibrating device a (209) is arranged at the bottom end inside the oil receiving barrel (205), and the vibrating device a (209) is connected with the oil receiving hopper a (201) through a vibrating rod a (204); the upper surface of the vibration device a (209) is horizontal, the edge of the upper surface is in contact with the side wall of the oil receiving barrel (205) without a gap, the oil receiving barrel (205) is communicated with the biological oil recovery tank (206) through the oil outlet pipe (207), and the lower side of the oil outlet pipe (207) and the upper surface of the vibration device a (209) are at the same height; an oil-stone separated aggregate conveyor belt (111) is arranged right below the discharge hole (208), the right end of the oil-stone separated aggregate conveyor belt (111) is arranged right above the receiving hopper b (303) of the screening box (301), and the left end of the oil-stone separated aggregate conveyor belt is arranged on the left side of the discharge hole (208); the aggregate conveyor belt (111) is supported by two supporting structures after oil-stone separation;
the aggregate classifying and screening mechanism comprises a screening box (301), wherein a conical receiving hopper b (303) is arranged at the top of the screening box (301), a vibrating device b (302) is arranged at the bottom end of the inside of the screening box (301), the upper surface of the vibrating device b (302) is horizontal, the edge of the upper surface of the vibrating device b (302) is in contact with the side wall of the screening box (301) without a gap, a plurality of layers of vibrating screens (305) are arranged above the vibrating device b (302) in the screening box (301), a plurality of round holes are uniformly formed in the surface of the vibrating screens (305), and the pore diameters of the vibrating screens (305) gradually decrease from top to bottom; the vibrating screen (305) is of a conical surface structure with the gradient of 3%, a vibrating rod b (306) is arranged on the vibrating device, the vibrating rod b (306) extends out of the upper surface of the vibrating device b (302), the vibrating rod b (306) is welded and fixed with conical tops of all layers of vibrating screens (305) respectively, screening openings (304) are arranged at intervals on the left side and the right side of the screening box (301), valves are arranged on the screening openings (304), the heights of the edges of the screening openings (304) are the same as those of the edges of the vibrating screen (305) before upward vibration, and a screening opening (304) is arranged at the equal height of the edges of each layer of vibrating screen (305) before vibration.
2. The old asphalt mixture oil-stone separation device with biological oil as solvent oil according to claim 1, wherein the oil delivery pipe (109) is a hose, and is detachable, and the bottom of the biological oil tank (107) is higher than the upper end of the stirring pot (105).
3. The old asphalt mixture oil-stone separation device with biological oil as solvent oil according to claim 1, wherein one of two supporting structures for supporting the old asphalt mixture conveyor belt (108) is arranged at the right end of the old asphalt mixture conveyor belt (108), and the horizontal distance between the two supporting structures is 2/3 of the distance between the two ends of the old asphalt mixture conveyor belt (108); and a baffle plate is welded on the right-end supporting structure and consists of two parallel inclined plates and a vertical plate, one end of the inclined plate at the bottom is welded on the supporting structure, the other end of the inclined plate is welded on the vertical plate, one end of the other inclined plate is welded on the vertical plate, and the other end of the other inclined plate is positioned at a position 1mm above the waste asphalt mixture conveying belt (108).
4. The old asphalt mixture oil-stone separation device with biological oil as solvent oil according to claim 1, wherein the stirring propeller is wedged with the bottom of the stirring pot (105) to form an X shape, and the stirring pot (105) is provided with a resistance wire.
5. The old asphalt mixture oil-stone separation device with biological oil as solvent oil according to claim 1, wherein the gradient of the bearing net (203) is 3%, a supporting rod is arranged below the bearing net (203) in the receiving hopper a (201), the supporting rod is in contact with the conical surface of the receiving hopper, a valve is arranged on the oil outlet pipe (207), one of two supporting structures for supporting the oil-stone separated aggregate conveyor belt (111) is arranged at the left end of the oil-stone separated aggregate conveyor belt (111), and the horizontal distance between the two supporting structures is 2/3 of the distance between the two ends of the oil-stone separated aggregate conveyor belt (111); and a baffle plate is welded on the left end supporting structure and consists of two parallel inclined plates and a vertical plate, one end of the inclined plate at the bottom is welded on the supporting structure, the other end of the inclined plate is welded on the vertical plate, one end of the other inclined plate is welded on the vertical plate, and the other end of the other inclined plate is positioned above a material collecting and conveying belt (111) for 1mm after oil-stone separation.
6. The old asphalt mixture oil-stone separation device with biological oil as solvent oil according to claim 1, wherein valves are arranged at the screening box (301) and the receiving hopper b (303); the vertical spacing of the vibrating screen (305) is continuously reduced.
7. The old asphalt mixture oil-stone separation device with biological oil as solvent oil according to claim 1, wherein the distance between the edge of the vibrating screen (305) and the side wall of the screening box (301) is 1mm.
8. The method of using the old asphalt mixture oil-stone separation apparatus in which bio-oil is solvent oil according to any one of claims 1 to 7, comprising the steps of:
step S1, after the amount of the biological oil is determined according to the washing amount, a switch of a flow counter (106) is turned on, the injection amount is controlled by the flow counter (106), the biological oil with the required amount is injected into a stirring pot (105) through an oil delivery pipe (109), the biological oil is heated to 100 ℃, and after the biological oil is conveyed, the switch on the flow counter (106) is turned off;
step S2, controlling the lifting rod (102) to descend through the operating platform (101), sending the stirring rotary paddle (103) into the stirring pot (105), and covering the stirring pot (105) by the pot cover (110);
s3, turning on a switch, rotating a waste asphalt mixture conveyor belt (108), conveying the waste asphalt mixture into a stirring pot (105) filled with biological oil at 100 ℃ through the waste asphalt mixture conveyor belt (108), and starting a motor (112) to stir a stirring rotating blade (103) at a speed of 20 r/min;
s4, randomly scooping the waste asphalt mixture in the pot, observing whether the asphalt on the surface of the waste asphalt mixture falls off completely, and if the asphalt is not completely fallen off, continuing stirring until the old asphalt on the surface of the waste asphalt mixture falls off completely;
s5, when old asphalt on the surface of the waste asphalt mixture completely falls off, the lifting rod (102) is controlled by the operating platform (101) to lift to the initial position, the motor (112) is turned off, and the stirring propeller (103) stops rotating;
s6, controlling an electric rotating shaft (104) through an operating table (101), and pouring the mixture in the pot into a receiving hopper a (201);
step S7, starting a vibrating device a (209), vibrating a vibrating rod a (204) to vibrate up and down, a receiving hopper a (201) vibrates up and down along with the vibrating rod a, biological oil in the mixture flows down from the receiving hopper a (201) to the upper surface of the vibrating device a (209) in an oil receiving barrel (205), a valve of an oil outlet pipe (207) is opened, the biological oil flows into a biological oil recovery tank (206), the valve on a discharge port (208) is opened after the vibrating device a (209) is started for 5min, an aggregate conveyor belt (111) is started after oil-stone separation, the valve on a receiving hopper b (303) is opened, a vibrating device b (302) is started, and the vibrating device b (302) rotates while vibrating up and down;
and S8, opening a valve of a screening opening (304) after the aggregate conveyor belt (111) rotates for 5min after oil-stone separation, and finishing aggregate screening with different particle diameters.
9. The method of claim 8, wherein the step S8 is performed with air drying or baking of each bone aggregate before the regenerated aggregate is packaged.
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CN112827451A (en) * 2021-01-04 2021-05-25 南通大学 Aluminum ash hydrolysis nitrogen removal method based on aluminum ash hydrolysis nitrogen removal device
CN113786669B (en) * 2021-10-19 2023-02-17 长沙理工大学 Waste road asphalt mixture oil-stone separation method
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