CN114508024A - Asphalt reclaimed material control method and asphalt reclaimed material recovery device - Google Patents
Asphalt reclaimed material control method and asphalt reclaimed material recovery device Download PDFInfo
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- CN114508024A CN114508024A CN202210414988.0A CN202210414988A CN114508024A CN 114508024 A CN114508024 A CN 114508024A CN 202210414988 A CN202210414988 A CN 202210414988A CN 114508024 A CN114508024 A CN 114508024A
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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
- E01C19/1004—Reconditioning or reprocessing bituminous mixtures, e.g. salvaged paving, fresh patching mixtures grown unserviceable; Recycling salvaged bituminous mixtures; Apparatus for the in-plant recycling thereof
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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
- E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
- E01C19/1063—Controlling the operations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a control method and a recovery device for a reclaimed asphalt material, belongs to the technical field of asphalt production, and aims to solve the problems of fuel waste, increased cost, quality, safety and the like in the traditional process of generating a reclaimed material from a waste asphalt material. The recovery device comprises a hopper, a lifter, a regeneration roller, a transition bin, a metering bin and an asphalt stirrer; a belt frequency converter and a belt weighing transmitter are arranged on the conveying belt at the bottom of the hopper; a transition bin weighing transmitter is arranged on the transition bin; a metering bin weighing transmitter is arranged on the metering bin; the belt frequency converter, the belt weighing transmitter, the transition bin weighing transmitter and the metering bin weighing transmitter are connected with the controller, so that the automatic control of the feeding amount of the reclaimed materials is realized, the feeding efficiency and accuracy are improved, and the quality of the reclaimed materials is ensured; and the automatic control is adopted to reduce the human intervention and ensure the safety of the operating personnel.
Description
Technical Field
The invention relates to a control method and a recovery device for a reclaimed asphalt material, and belongs to the technical field of asphalt production.
Background
As the asphalt pavement is built in China from the end of the last century, the service performance of the asphalt pavement begins to decline with the passage of time, a lot of asphalt solid wastes are generated, and the asphalt solid wastes are randomly stacked or discarded, so that the occupied land and the environmental pollution are also brought. The asphalt recycling station heats the crushed and screened waste milling recycled asphalt pavement materials, and then mixes and stirs the heated waste milling recycled asphalt materials with a proper amount of new asphalt, new aggregate, new powder, recycling agent and the like, and the generated recycled materials are mainly used for paving road base layers or surface layers below surface layers and the like, so that the waste can be changed into valuable.
In the production process of the asphalt reclaimed materials, due to different order proportions, the use amount of the reclaimed materials needs to be adjusted at any time, so that the balance failure of a feeding system and a thermal system can be caused. At present, the feeding amount and the load of a burner are manually adjusted by operators according to experience in the industry, so that the quality of the produced asphalt reclaimed material has instability; in addition, manual adjustment increases operating energy of the operator, and potential safety hazards exist.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a reclaimed asphalt material control method and a reclaimed asphalt material recovery device, which can improve the quality of reclaimed asphalt materials, save fuel, simplify the operation procedures of operators and ensure the safety of the operators and equipment in the production process.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
in a first aspect, the invention provides an asphalt reclaimed material recovery device, which comprises a hopper, a hoisting machine, a regeneration roller, a transition bin, a metering bin and an asphalt stirrer, wherein the hoisting machine is arranged on the hopper; the hopper is arranged on one side of the hoister; a regeneration roller is arranged at the top of the other side of the elevator; the bottom of one end of the regeneration roller is sequentially provided with a transition bin, a metering bin and an asphalt stirrer from top to bottom; the other end of the regeneration roller is provided with a burner; a conveying belt is arranged at the bottom of the hopper, and a belt frequency converter and a belt weighing transmitter are arranged on the conveying belt;
a transition bin weighing transmitter is arranged on the transition bin; a metering bin weighing transmitter is arranged on the metering bin; the belt frequency converter, the belt weighing transmitter, the transition bin weighing transmitter and the metering bin weighing transmitter are connected with the controller.
With reference to the first aspect, further, a tail gas temperature monitor and a discharge temperature monitor are disposed on the discharge end of the regeneration drum.
With reference to the first aspect, further, the controller is connected to a computer; the controller comprises a PLC controller.
In a second aspect, the invention provides a method for controlling a recycled asphalt material, which adopts the recycled asphalt material recycling device; the method comprises the following steps:
acquiring a weight signal and a belt speed signal of reclaimed materials on a conveying belt at the bottom of a hopper, a weight signal of reclaimed materials in a transition bin and a weight signal of reclaimed materials in a metering bin;
calculating the target instantaneous flow of the reclaimed materials on the conveying belt according to the period of producing one pot of reclaimed materials by the asphalt stirrer and the required reclaimed material amount;
calculating the actual instantaneous flow of the reclaimed materials on the conveying belt according to the weight signal and the belt speed signal of the reclaimed materials on the conveying belt of the hopper and the flow calibration coefficient;
the speed of the conveying belt is controlled by referring to the actual instantaneous flow of the reclaimed materials on the conveying belt and the target instantaneous flow of the reclaimed materials on the conveying belt, and the reclaimed material amount put in the conveying belt by the hopper is adjusted in time.
With reference to the second aspect, further, the weight of the reclaimed materials in the transition bin is set to an upper limit value and a lower limit value, and when the weight of the reclaimed materials in the transition bin is lower than the lower limit value or higher than the upper limit value, the controller automatically adjusts the amount of the reclaimed materials thrown by the hopper onto the conveying belt.
With reference to the second aspect, further, the method further includes acquiring a tail gas temperature signal and a discharge temperature signal; the controller obtains the discharge temperature signal of the discharge end of the regeneration roller, regulates and controls the fire intensity of the burner in real time, and obtains the tail gas temperature signal of the discharge end of the regeneration roller to control high-temperature alarm or over-temperature fire break.
With reference to the second aspect, further, the calculating the target instantaneous flow rate includes calculating the target instantaneous flow rate of the reclaimed materials on each conveyor belt respectively or calculating the instantaneous flow rate of the reclaimed materials on the total conveyor belt first, and then calculating the target instantaneous flow rate of the reclaimed materials on each conveyor belt according to the distribution of the reclaimed materials on each conveyor belt.
With reference to the second aspect, further, the target instantaneous flow rate of the reclaimed materials on the conveying belt is obtained by the following algorithm:
Ftarget=MGo back to/t；
In the formula: fTargetRepresenting the target instantaneous flow of the reclaimed materials of the conveying belt in kg/s; m is a group ofGo back toThe unit kg of the recycled material required by producing one pot of recycled material is expressed; t represents the cycle of producing one pot of recycled material, unit s; the actual instantaneous flow of the reclaimed materials of the conveying belt is obtained by the following algorithm:
Fpractice of=kvQ；
In the formula: fPractice ofThe method comprises the steps of representing the actual instantaneous flow of a belt reclaimed material, wherein the unit kg/s and k represent flow calibration coefficients and are obtained through object calibration; v represents the conveyor belt speed in m/s; q represents the load in the weigh segment in kg/m.
Compared with the prior art, the invention has the following beneficial effects:
in order to improve the quality of the reclaimed asphalt and the safety of the whole production process, the reclaimed asphalt recycling device provided by the invention comprises a hopper, a lifting machine, a recycling roller, a transition bin, a metering bin and an asphalt stirrer, and is connected with a computer through a belt frequency converter, a belt weighing transmitter, a transition bin transmitter and a metering bin transmitter, so that the feeding amount of the reclaimed asphalt is automatically controlled, the feeding efficiency and accuracy are improved, and the quality of the reclaimed asphalt is ensured; the automatic control reduces the human intervention and ensures the safety of the operating personnel; a common computer is used as a control core, the collected weight and temperature data are analyzed and calculated, various parameters can be modified and stored, and the operation is convenient and rapid.
The invention provides a control method of asphalt reclaimed materials, which mixes and stirs waste asphalt reclaimed materials with new asphalt, new aggregate, new powder, regenerant and the like to change waste into valuable, but because of different order proportions in the production process of the asphalt reclaimed materials, the usage amount of the reclaimed materials needs to be adjusted at any time, a controller acquires and processes required signals to determine the actual instantaneous flow of the belt reclaimed materials, and then the actual instantaneous flow of the belt reclaimed materials is compared with the calculated target instantaneous flow of the belt reclaimed materials for reference, the output frequency of a hopper frequency converter is controlled, and the loading amount of the reclaimed materials is adjusted in real time; meanwhile, the computer presets the load of the regenerative roller burner in advance according to the change of the feeding amount and the feeding and discharging temperature of the roller, so that the influence on the discharging temperature caused by lagging regulation is avoided, and compared with the traditional manual intervention, the operation accuracy and the working efficiency are improved.
Drawings
FIG. 1 is a schematic diagram of an apparatus for recycling asphalt recycling in accordance with an embodiment of the present invention;
FIG. 2 is a flow chart of a method for controlling recycled asphalt material according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a method for controlling recycled asphalt material according to an embodiment of the present invention;
FIG. 4 is a logic flow chart of a method for controlling recycled asphalt according to an embodiment of the present invention;
in the figure: 1. a hopper; 2. a hoist; 3. a regeneration drum; 4. a transition bin; 5. a metering bin; 6. an asphalt stirrer; 7. a burner; 8. a belt frequency converter; 9. a belt weight transmitter; 10. a transition bin weighing transmitter; 11. a measuring bin weighing transmitter; 12. a controller; 13. a conveyor belt.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The first embodiment is as follows:
referring to fig. 1, the invention provides a recycling device for asphalt recycling materials, which comprises a hopper 1, a conveying belt 13, a lifter 2, a regeneration roller 3, a transition bin 4, a metering bin 5, an asphalt stirrer 6 and a computer, wherein the hopper 1 is connected with the regeneration roller; a conveying belt 13 is arranged below the hopper 1 on one side of the hoister 2 and used for conveying the hopper 1; and a belt frequency converter 8 and a belt weighing transmitter 9 are arranged on the conveying belt 13. A regeneration roller 3 is arranged at the top of the elevator 2; a burner 7 is arranged at one end of the regeneration roller 3 and used for heating the reclaimed materials; a transition bin 4 is arranged at the bottom of the other end of the regeneration roller 3, namely the bottom of the discharge port, and is used for receiving the heated reclaimed materials; the metering bin 5 is arranged below the transition bin 4 and used for receiving and calculating reclaimed materials fed by the transition bin 4; the asphalt stirrer 6 is used for stirring the reclaimed materials fed by the metering bin 5; the transition bin 4 is provided with a transition bin weighing transmitter 10, and the metering bin 5 is provided with a metering bin weighing transmitter 11; the controller 12 is respectively connected with the belt weighing transmitter 9, the transition bin weighing transmitter 10, the metering bin weighing transmitter 11 and the belt frequency converter 8. The discharging end of the regeneration roller 3 is provided with a discharging temperature detector and a tail gas temperature monitor.
Specifically, as shown in fig. 3, the belt frequency converter 8: the device is used for adjusting the speed of the belt and controlling the feeding amount; an exhaust gas temperature monitor: for obtaining a tail gas temperature signal of the burner 7; discharging temperature monitor: the device is used for acquiring a heated reclaimed material discharge temperature signal; the controller 12: signals acquired by the acquisition and processing belt frequency converter 8, the transition bin weighing transmitter 10, the metering bin weighing transmitter 11, the tail gas temperature monitor and the discharge temperature monitor are transmitted to the controller 12, and the controller 12 carries out regulation and control through data analysis and processing.
The millivolt voltage signal output by the belt weighing transmitter 9 is filtered and amplified by the signal transmitter and then converted into a digital quantity signal, namely a weight signal, and the weight signal is transmitted to the controller 12 through RS-485 communication. The controller 12 calculates the target instantaneous flow of the reclaimed materials on the conveying belt 13 according to the order proportion, the production time of single-pot materials and the like, calculates the actual instantaneous flow of the reclaimed materials put on the conveying belt 13 from the hopper 1 according to the field weight signal, the speed signal and the flow calibration coefficient, inputs the target instantaneous flow and the actual instantaneous flow into the PID control at the same time, obtains a PID control signal for controlling the output frequency of the belt frequency converter 8 and timely adjusts the feeding amount of the reclaimed materials.
The computer receives the discharging temperature signal transmitted by the discharging temperature monitor of the regeneration roller 3 through the A/D module and receives the tail gas temperature signal transmitted by the tail gas temperature monitor through the temperature module; the analog signals of the weighing sensors of the transition bin 4 and the measuring bin 5 are respectively transmitted to the A/D module by respective transmitters, and then are transmitted to the computer by the A/D module.
The controller 12 respectively regulates and controls the alarm and the combustor 7 according to the received tail gas temperature signal and the discharge temperature signal. The computer can be used as the whole control core, and all the collected signals can be displayed and operated through a human-computer interaction interface. The controller 12 can also adopt a PLC controller, which has high reliability, strong anti-interference capability, perfect functions, strong applicability, easy learning and use, small design and construction workload of the device, convenient maintenance, easy reconstruction, small volume, light weight and low energy consumption.
Example two: weighing transmitter for metering bin
Referring to fig. 2 and 4, an embodiment of the present invention provides a method for controlling recycled asphalt, where the method includes:
step 1:
collecting a weight signal and a speed signal of reclaimed materials of each conveying belt 13, a weight signal of reclaimed materials of the transition bin 4 and a weight signal of reclaimed materials of the metering bin 5; in addition, a tail gas temperature signal and a reclaimed material discharging temperature signal of the regeneration roller 3 are also collected; in addition, a computer is set with a tail gas high-temperature alarm value T of the regeneration roller 3Height ofOvertemperature cutoff value TSuper-super. The general high temperature alarm value is set to be about 140 ℃, and the overtemperature flame-out value is set to be about 190 ℃; setting upper and lower limits M of reclaimed materials in a transition bin 4On the upper part、MLower partLower limit coefficient K1Can be set between 1 and 2, and the upper limit coefficient K2Can be set between 4 and 5 according to the actual production situation.
In the recovery device, a plurality of hoppers 1 are used for feeding, and a conveying belt 13 is driven to run by a belt motor. All be equipped with belt weighing sensor and belt weighing transmitter 9 on the conveyer belt 13 of each hopper 1 below for monitoring hopper 1 puts the reclaimed materials weight signal on conveyer belt 13, analog signal among the belt weighing sensor on the belt passes through belt weighing transmitter 9 and converts digital signal, weight signal promptly.
The belt frequency converter 8 is used for adjusting the speed of each conveying belt 13; the recovery device comprises a tail gas temperature monitor for outputting a tail gas temperature signal and a discharge temperature monitor for outputting a discharge temperature signal. The controller 12 receives the detection signal of the exhaust gas temperature detector and monitors the exhaust gas temperature in real time. The temperature of the tail gas is set to be T, THeight ofIs a high temperature alarm value, T, of the exhaust gas temperatureSuper-superThe over-temperature cutoff value of the tail gas temperature ensures the high-temperature alarm or over-temperature cutoff of the device. Tail gas temperature of THeight of＜T＜TSuper-superWhen the alarm is needed, high-temperature alarm is carried out; t > TSuper-superAnd performing overtemperature fire breaking. The controller 12 receives the detection signal of the discharging temperature monitor, monitors the discharging temperature of the regeneration roller 3 in real time, and ensures the quality of the reclaimed materials discharged by the regeneration roller 3.
According to production requirements and computer settings, obtaining the period t of each pot of produced regenerated materials, unit: s, amount of recycled material MGo back toThe unit: kg; then stable in productionTarget instantaneous flow F of reclaimed materials of each conveying belt 13 in material supply processTargetThe method comprises the following steps:
Ftarget=MGo back toT, unit: kg/s;
calculating the target instantaneous flow rate of the reclaimed materials of each conveyor belt 13 comprises calculating the target instantaneous flow rate of the reclaimed materials of each conveyor belt 13 or calculating the target instantaneous flow rate of the reclaimed materials of the total conveyor belt 13 respectively, and then calculating the target instantaneous flow rate of each conveyor belt 13 according to the distribution of the reclaimed materials of each conveyor belt 13.
Step 2:
the controller 12 calculates the actual instantaneous flow F of the reclaimed materials on each conveying belt 13 by combining the weight signal of the reclaimed materials on each conveying belt 13, the speed signal of each conveying belt 13 and the flow calibration coefficientPractice of(ii) a In order to ensure the production continuity and the metering accuracy, the weight of the reclaimed materials in the transition bin 4 is set to be an upper limit value and a lower limit value, and when the weight of the reclaimed materials is lower than the lower limit value or higher than the upper limit value, the controller 12 automatically adjusts the feeding amount, F, of the conveying belt 13Practice ofThe method comprises the following steps:
Fpractice ofkvQ, unit: kg/s;
wherein, FPractice ofRepresenting the actual instantaneous flow of reclaimed material for each conveyor belt 13; k is a flow calibration coefficient and can be obtained by real object calibration; v is the speed of the feeding conveyor belt 13, unit: m/s, respectively measuring and calculating corresponding linear speeds when the belt frequency converter 8 outputs 10Hz, 15Hz … … 45Hz and 50Hz (or can be more refined), and converting 0-50 Hz signals into corresponding linear speeds v through a fold line function;
q is the load of the weighing section, unit kg/m, calculated as: q =2 (M)Conveying appliance-MBalance)/L，
MTransmission deviceSignals (real-time load signals) representing the weight of the conveyor belt 13 and the reclaimed material, MBalanceThe weight of the belt weigher (obtained by zero calibration of the belt weigher) is represented, and L is the length of an effective weighing section of the belt weigher;
substituting the Q calculation formula to obtain: fIn fact=2kv(MConveying appliance-MBalance)/L，
To ensure the continuity of production and the accuracy of meteringA certain amount of reclaimed materials M should be ensured in the intermediate warehouse 4 during the productionStableThe upper and lower limits may be set to MOn the upper part、MLower part(in kg) in the sense of being less than MLower partDuring the process, the material can be discharged unstably when the material is discharged to the metering bin 5, so that the metering precision is influenced; higher than MOn the upper partIn time, the transition bin 4 is easily overloaded and overfilled.
It is possible to set: mOn the upper part=k1*MGo back to，MLower part=k2*MGo back toWherein k is1、k2The upper and lower limit coefficients can be determined by the customer according to production experience.
Additional calculation of MStableDeviation from upper and lower limits MOn the upper part、MLower partValue M ofDeflectionUnit kg, when MStableBelow a lower limit MLower partWhen M is in contact withDeflection=MLower part-MStable(ii) a When M isStableAbove the upper limit MOn the upper partWhen M is in contact withDeflection=MStable-MOn the upper part。
When M isDeflection>When 0, the target instantaneous flow of the reclaimed materials on the conveying belt 13 needs to be adjusted in time, and in order to avoid frequent adjustment, the target instantaneous flow can be adjusted once at certain intervals, and the F calculated in the step 1TargetAs a base, adjusting the magnitude and offset MDeflectionIs in direct proportion.
And step 3:
the controller 12 refers to the actual instantaneous flow rate of the reclaimed materials of each conveyor belt 13 and the target instantaneous flow rate of the reclaimed materials of each conveyor belt 13, and controls the speed of the conveyor belt 13 to adjust the reclaimed material amount of the hopper 1 put on the conveyor belt 13 in time.
In the steps 1 and 2, the target instantaneous flow F of the reclaimed materials is calculatedTargetCalculating the target instantaneous flow F of each conveyor belt 13 according to the feeding distribution of the conveyor belt 13Object 1、FObject 2……FTarget n. While the controller 12 is responsive to the field weight signal MTransmission deviceCalculating the actual instantaneous flow F of each conveying belt 13 by the speed v of the conveying belt 13 and the flow calibration coefficient kPractice 1、FPractice 2……FActual nSimultaneously inputting the target instantaneous flow and the actual instantaneous flow into the PID programIn the process, the PID output signals are used for adjusting the output frequency of the belt frequency converter 8 on each conveying belt 13, so that the feeding amount of the reclaimed materials is adjusted in time.
Meanwhile, when the feeding amount of the reclaimed materials is changed, the burner 7 arranged at one end of the regeneration roller 3 needs to be preset in advance, so that the discharge temperature of the reclaimed materials is controlled within a required range, generally controlled at about 120 ℃; the quality of the discharged material is ensured. In the production process, the order proportion is changed or the amount of the recovered materials in the transition bin 4 exceeds the upper limit and the lower limit, and the feeding amount and the load of the combustor 7 need to be adjusted in time until the feeding and the heating are balanced. The controller 12 calculates the total specific heat of the reclaimed materials according to the changed feeding flow and the discharge temperature of the regeneration roller 3, and calculates the actual oil supply and air supply of the combustor 7 by adding the heat loss, thereby presetting the actual oil supply and air supply in advance.
When the production task is close to the end, the computer calculates the required reclaimed material amount according to the remaining production task, if the reclaimed material amount reserved in the transition bin 4 can meet the final production, the reclaimed material feeding and the combustion of the combustor 7 can be stopped in advance, the material cleaning of the regeneration transition bin 4 after the production is finished is effectively avoided, and the purpose of saving the cost is achieved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A pitch reclaimed material recovery device is characterized by comprising a hopper, a lifter, a regeneration roller, a transition bin, a metering bin and a pitch stirrer; the hopper is arranged on one side of the hoister; a regeneration roller is arranged at the top of the other side of the elevator; the bottom of one end of the regeneration roller is sequentially provided with a transition bin, a metering bin and an asphalt stirrer from top to bottom; the other end of the regeneration roller is provided with a burner; a conveying belt is arranged at the bottom of the hopper, and a belt frequency converter and a belt weighing transmitter are arranged on the conveying belt;
a transition bin weighing transmitter is arranged on the transition bin; a metering bin weighing transmitter is arranged on the metering bin; the belt frequency converter, the belt weighing transmitter, the transition bin weighing transmitter and the metering bin weighing transmitter are connected with the controller.
2. The recycling device of asphalt recycling materials according to claim 1, wherein a tail gas temperature monitor and a discharging temperature monitor are arranged on the discharging end of the recycling drum.
3. The recycling apparatus for asphalt recycling material according to claim 1, wherein said controller is connected to a computer; the controller comprises a PLC controller.
4. A method for controlling a reclaimed asphalt material, characterized in that a reclaimed asphalt material recovery apparatus according to any one of claims 1 to 3 is used, and the method comprises:
acquiring a weight signal and a belt speed signal of reclaimed materials on a conveying belt at the bottom of a hopper, a weight signal of reclaimed materials in a transition bin and a weight signal of reclaimed materials in a metering bin;
calculating the target instantaneous flow of the reclaimed materials on the conveying belt according to the cycle of producing one pot of reclaimed materials by the asphalt stirrer and the required reclaimed material amount;
calculating the actual instantaneous flow of the reclaimed materials on the conveying belt according to the weight signal and the belt speed signal of the reclaimed materials on the conveying belt of the hopper and the flow calibration coefficient;
the speed of the conveying belt is controlled by referring to the actual instantaneous flow of the reclaimed materials on the conveying belt and the target instantaneous flow of the reclaimed materials on the conveying belt, and the reclaimed material amount put in the conveying belt by the hopper is adjusted in time.
5. The method according to claim 4, wherein the reclaimed asphalt material weight in the transition bin is set to an upper limit value and a lower limit value, and when the reclaimed asphalt material weight in the transition bin is lower than the lower limit value or higher than the upper limit value, the controller automatically adjusts the amount of the reclaimed asphalt material put on the conveying belt by the hopper.
6. The method for controlling the asphalt reclaimed materials according to claim 4, wherein the method further comprises the steps of obtaining a tail gas temperature signal and a discharge temperature signal; the controller obtains the discharge temperature signal of the discharge end of the regeneration roller, regulates and controls the fire intensity of the burner in real time, and obtains the tail gas temperature signal of the discharge end of the regeneration roller to control high-temperature alarm or over-temperature fire break.
7. The method according to claim 4, wherein calculating the target instantaneous flow rate comprises calculating the target instantaneous flow rate of reclaimed materials on each conveyor belt or calculating the instantaneous flow rate of reclaimed materials on the total conveyor belt, and calculating the target instantaneous flow rate of reclaimed materials on each conveyor belt according to the distribution of reclaimed materials on each conveyor belt.
8. The method of claim 4, wherein the target instantaneous flow rate of the reclaimed materials on the conveyor belt is obtained by the following algorithm:
Ftarget=MGo back to/t；
In the formula: fTargetRepresenting the target instantaneous flow of the reclaimed materials of the conveying belt in kg/s; mGo back toThe unit kg of the recycled material required by producing one pot of recycled material is expressed; t represents the cycle of producing one pot of recycled material, and the unit is s; the actual instantaneous flow of the reclaimed materials of the conveying belt is obtained by the following algorithm:
Fpractice of=kvQ；
In the formula: fPractice ofThe method comprises the steps of representing the actual instantaneous flow of a belt reclaimed material, wherein the unit kg/s and k represent flow calibration coefficients and are obtained through object calibration; v represents the conveyor belt speed in m/s; q represents the load in the weigh segment in kg/m.
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| CN202210414988.0A CN114508024A (en) | 2022-04-20 | 2022-04-20 | Asphalt reclaimed material control method and asphalt reclaimed material recovery device |
| CN202221463416.3U CN217710195U (en) | 2022-04-20 | 2022-06-13 | Asphalt reclaimed material recovery device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210414988.0A CN114508024A (en) | 2022-04-20 | 2022-04-20 | Asphalt reclaimed material control method and asphalt reclaimed material recovery device |
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| CN114508024A true CN114508024A (en) | 2022-05-17 |
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| CN202221463416.3U Active CN217710195U (en) | 2022-04-20 | 2022-06-13 | Asphalt reclaimed material recovery device |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102681482A (en) * | 2012-05-23 | 2012-09-19 | 沈阳新一代信息技术有限公司 | Device and method for monitoring aggregate metering process of forced intermittent asphalt stirring equipment |
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| CN111958833A (en) * | 2020-08-26 | 2020-11-20 | 徐州徐工养护机械有限公司 | Formula setting amount complementary adjusting system and adjusting method |
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2022
- 2022-04-20 CN CN202210414988.0A patent/CN114508024A/en active Pending
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| EP2674530A2 (en) * | 2011-02-08 | 2013-12-18 | Villalobos Davila, Rodolfo | Industrial equipment for the hot recycling of asphalt mixes |
| CN102681482A (en) * | 2012-05-23 | 2012-09-19 | 沈阳新一代信息技术有限公司 | Device and method for monitoring aggregate metering process of forced intermittent asphalt stirring equipment |
| CN203393544U (en) * | 2013-06-09 | 2014-01-15 | 江阴市鑫海公路机械材料有限公司 | Recycling and allocating system of asphalt stirring equipment |
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| CN205935795U (en) * | 2016-07-08 | 2017-02-08 | 山东省路桥集团有限公司 | Pitch hot mix plant recycling blendes station and attaches building |
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