CN115819016B - Medium-temperature asphalt recycling mixture and preparation method thereof - Google Patents
Medium-temperature asphalt recycling mixture and preparation method thereof Download PDFInfo
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- CN115819016B CN115819016B CN202211455312.2A CN202211455312A CN115819016B CN 115819016 B CN115819016 B CN 115819016B CN 202211455312 A CN202211455312 A CN 202211455312A CN 115819016 B CN115819016 B CN 115819016B
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- 239000000203 mixture Substances 0.000 title claims abstract description 88
- 239000010426 asphalt Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000004064 recycling Methods 0.000 title claims abstract description 20
- 238000012216 screening Methods 0.000 claims abstract description 83
- 239000002699 waste material Substances 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000007873 sieving Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000012492 regenerant Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 16
- 239000004566 building material Substances 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 abstract description 2
- 230000002411 adverse Effects 0.000 abstract 1
- 230000000750 progressive effect Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 15
- 230000000694 effects Effects 0.000 description 12
- 230000032683 aging Effects 0.000 description 5
- 238000005204 segregation Methods 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000011874 heated mixture Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
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- Road Paving Machines (AREA)
Abstract
The invention discloses a medium-temperature asphalt recycling mixture and a preparation method thereof, comprising the following steps: s1: crushing, sieving and preheating: adding the waste medium-temperature asphalt mixture into a waste treatment device, and preheating the mixture while screening and crushing the waste medium-temperature asphalt mixture, wherein the preheating temperature is controlled between 80 and 85 degrees, so as to obtain a pretreated mixture, and S2: and adding the pretreated mixture into a heater for heating and carrying out microwave treatment. The invention relates to the technical field of building materials; according to the medium-temperature asphalt recycling mixture and the preparation method thereof, through the mutual matching of the preheating plate and the heater, the asphalt mixture can be preheated firstly in the preparation process and then heated, the heating process of the asphalt mixture is a progressive process, the quality of the asphalt mixture is prevented from being adversely affected by excessively fast heating, and meanwhile, the shearing resistance and damage resistance of the asphalt mixture are ensured.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a medium-temperature asphalt recycling mixture and a preparation method thereof.
Background
The medium-temperature asphalt is black solid at normal temperature, is solidified into brittle solid with conchioidal fracture at a certain temperature, is in a glass phase, has no certain melting point, is melted in a certain melting point range, has no thermal effect during solidification, and is divided according to different softening points. The softening point is 65-90 ℃ which is medium temperature asphalt;
in the using process of the asphalt pavement, the asphalt pavement is exposed in natural environment for a long time, is subjected to the actions of natural environments such as sunlight, precipitation, temperature change and the like, and is subjected to repeated wheel rolling load, so that the asphalt shows irreversible change of physical and chemical properties or mechanical properties, namely the aging of the asphalt. Therefore, the asphalt pavement has a certain service life, and after the service life is reached, the asphalt pavement needs to be repaired. If the waste materials of the old asphalt can be recycled, not only can the resources be saved, but also the pollution to the environment can be reduced, and the method has considerable economic and social benefits.
In the existing preparation process of the medium-temperature asphalt regenerated mixture, the screened and crushed waste medium-temperature asphalt mixture is directly heated in a heating machine, the heating temperature of asphalt is difficult to control by rapid heating and softening, the conditions of asphalt segregation and local aging are easy to occur, and meanwhile, the shearing resistance and damage resistance of asphalt are reduced, so that the product quality of the asphalt mixture is reduced.
Therefore, the invention provides a medium-temperature asphalt recycling mixture and a preparation method thereof, so as to solve the problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a medium-temperature asphalt recycling mixture and a preparation method thereof, and solves the problems.
In order to achieve the above purpose, the invention is realized by the following technical scheme: a preparation method of a medium-temperature asphalt recycling mixture comprises the following steps:
s1: crushing, sieving and preheating: adding the waste medium-temperature asphalt mixture into a waste treatment device, and preheating the mixture while screening and crushing the waste medium-temperature asphalt mixture, wherein the preheating temperature is controlled between 40 and 45 degrees, so as to obtain a pretreated mixture;
s2: heating and temporary storage: adding the pretreated mixture into a heater for heating and carrying out microwave treatment, and then temporarily storing in a storage bin in the heater;
s3: discharging, stirring and mixing: discharging the mixture subjected to microwave treatment in the storage bin into a hot stirrer, rapidly adding new medium-temperature asphalt, new aggregate, mineral powder and regenerant according to the proportion, stirring and running for 10min by the hot stirrer to obtain hot regenerated asphalt, and controlling the stirring temperature in the hot stirrer to be 70-90 ℃.
Preferably, the waste treatment device comprises a lower through pipe which is communicated with the upper end of the heater, an upper through pipe is arranged above the lower through pipe, the lower through pipe and the upper through pipe are arranged at intervals, four corners of the lower through pipe and the upper through pipe are fixedly connected with each other, a feeding hole is formed in the upper end of the upper through pipe, a coarse screening plate is fixedly arranged at the feeding hole, a fine screening plate is arranged between the lower through pipe and the upper through pipe, a fixing block is fixedly arranged on the side wall of the fine screening plate, a telescopic rod is fixedly arranged between the fixing block and the upper wall of the lower through pipe, a vibrating spring is fixedly arranged at the outer wall of the telescopic rod, two sides of the outer wall of the lower through pipe and the outer wall of the upper through pipe are provided with preheating plates through sliding limiting components, two ends of the inner wall of the lower end of the upper through pipe are fixedly provided with fixing plates, a plurality of sliding rods are arranged between the two fixing plates, the sliding rods and the fine screening plates are correspondingly arranged, a rotating shaft is fixedly arranged between the upper wall of the fine screening plate, two rotating motor sets of the rotating plates are fixedly provided with two rotating sleeve rings, two corresponding sleeve rings are arranged between the two rotating plates and are correspondingly arranged between the two motor sets, and the two sleeve rings are correspondingly arranged between the two connecting plates are fixedly arranged between the two connecting plates, and are correspondingly arranged between the two connecting plates and are respectively arranged between the connecting plates and are correspondingly and are fixedly arranged between the connecting plates and are respectively.
Preferably, the sliding limiting assembly comprises a sliding groove arranged on the side wall of the upper end of the lower through pipe, a sliding block is arranged in the sliding groove in a sliding manner, a reset spring is fixedly arranged between the lower end of the sliding block and the bottom wall of the sliding groove, and the upper end of the sliding block is fixedly connected with the preheating plate;
the magnetic strips are fixedly arranged on the side wall of the lower end of the upper through pipe, a plurality of magnetic blocks are correspondingly and fixedly arranged at the upper end of the preheating plate, and the magnetic blocks and the magnetic strips are mutually adsorbed.
Preferably, the vibration assembly comprises a supporting block fixedly arranged on the side wall of the fine screening plate, the other end of the motor is connected with a cam, and the side wall of the cam and the side wall of the supporting block are mutually attached.
Preferably, the crushing assembly comprises crushing plates arranged at two ends of the inner wall of the upper through pipe in a sliding manner, a plurality of cross bars are fixedly arranged between the two crushing plates, guide pins are uniformly and fixedly arranged at the upper ends of the cross bars, a plurality of crushing pins are uniformly and fixedly arranged at the lower ends of the cross bars and the crushing plates, and guide plates are fixedly arranged at the upper ends of the two crushing plates;
through holes are correspondingly formed in the side walls of the upper through pipes, connecting rods are slidably arranged in the through holes, the connecting rods penetrate through the side walls of the upper through pipes, one ends of the connecting rods are fixedly connected with guide plates, and transmission rods are rotatably arranged between one ends of the cam side walls of the other ends of the connecting rods.
Preferably, the middle part of the connecting rod is fixedly provided with a limiting sliding plate, a limiting sliding groove is correspondingly arranged in the through hole, and the limiting sliding plate is slidably arranged in the limiting sliding groove.
Advantageous effects
The invention provides a medium-temperature asphalt recycling mixture and a preparation method thereof. Compared with the prior art, the method has the following beneficial effects:
(1) According to the medium-temperature asphalt regenerated mixture and the preparation method thereof, the motor, the cam, the sliding rod and other structures are mutually matched, the cam rotates for one circle, the fine screening plate moves back and forth in the vertical direction for two times, the corresponding two sliding rods are mutually close to and separated for two times, the larger waste mixture supported by the sliding rods is crushed once, the larger waste mixture can be crushed in the process, meanwhile, the sliding rods and the fine screening plate are mutually matched for transmission, the mixture on the fine screening plate can be subjected to certain stirring and mixing effects, the situation that the mesh of the fine screening plate is blocked is prevented, the screening effect of the fine screening plate is ensured, the crushing and screening processes are mutually matched, the crushed mixture is convenient to screen, and the larger mixture can be automatically crushed by the crushing needle when being screened.
(2) According to the medium-temperature asphalt regenerated mixture and the preparation method thereof, through the mutual matching of the structures of the preheating plate, the fine screening plate, the crushing needle and the like, the preheating plate is powered on in the process of screening the mixture by the fine screening plate, the mixture at the fine screening plate is continuously heated and preheated, the heating process of the heater is matched, the heating process of the mixture is more uniform and mild, the problem that the rapid temperature rise is difficult to control the temperature is solved, the occurrence of asphalt segregation and local aging is prevented, the quality of a product is ensured, meanwhile, the smaller mixture crushed at the fine screening plate is easier to be heated uniformly, the preheating effect is better, the heated mixture is easier to crush under the action of the crushing needle, and the two complement each other, so that the production efficiency and the product quality of the product are improved.
Drawings
FIG. 1 is a schematic flow chart of a medium temperature asphalt recycling mixture and a preparation method thereof;
FIG. 2 is a schematic perspective view of a side of a waste treatment device in the medium-temperature asphalt recycling mixture and the preparation method thereof;
FIG. 3 is a schematic perspective view of FIG. 2A;
fig. 4 is a schematic perspective view of the structure at B in fig. 2;
FIG. 5 is a schematic view of another side perspective structure of a waste treatment device in the medium-temperature asphalt recycling mixture and the preparation method thereof;
FIG. 6 is a schematic view of another side perspective structure of a waste treatment device in the medium-temperature asphalt recycling mixture and the preparation method thereof;
FIG. 7 is a schematic view of another side perspective structure of a waste treatment device in the medium-temperature asphalt recycling mixture and the preparation method thereof;
fig. 8 is a schematic perspective view of fig. 7 at C;
FIG. 9 is a schematic perspective view showing the internal structure of a waste treatment device in the medium-temperature asphalt recycling mixture and the preparation method thereof;
fig. 10 is a schematic perspective view of the internal structure of a waste treatment device in the medium-temperature asphalt recycling mixture and the preparation method thereof.
In the figure, 1, a heater; 2. a lower through pipe; 3. a top through pipe; 4. a feed inlet; 5. a coarse screening plate; 6. a preheating plate; 7. a connecting plate; 8. a motor; 9. a cam; 10. a slide block; 11. a chute; 12. a return spring; 13. a through hole; 14. a connecting rod; 15. a transmission rod; 16. a magnetic stripe; 17. a magnetic block; 18. a fine screening plate; 19. abutting blocks; 20. a fixed block; 21. a telescopic rod; 22. a vibration spring; 23. a fixing plate; 24. a slide bar; 25. a rotating shaft; 26. a rotating piece; 27. a collar; 28. a breaker plate; 29. a guide plate; 30. a cross bar; 31. a crushing needle; 32. a guide needle.
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.
Embodiment one:
referring to fig. 1 to 10, a method for preparing a medium temperature asphalt recycling mixture includes the following steps:
s1: crushing, sieving and preheating: adding the waste medium-temperature asphalt mixture into a waste treatment device, and preheating the mixture while screening and crushing the waste medium-temperature asphalt mixture, wherein the preheating temperature is controlled between 40 and 45 degrees, so as to obtain a pretreated mixture;
s2: heating and temporary storage: adding the pretreated mixture into a heater 1 for heating and carrying out microwave treatment, and then temporarily storing in a storage bin in the heater 1;
s3: discharging, stirring and mixing: discharging the mixture subjected to microwave treatment in the storage bin into a hot stirrer, rapidly adding new medium-temperature asphalt, new aggregate, mineral powder and regenerant according to the proportion, stirring and running for 10min by the hot stirrer to obtain hot regenerated asphalt, and controlling the stirring temperature in the hot stirrer to be 70-90 ℃;
the waste treatment device comprises a lower through pipe 2 communicated with the upper end of a heater 1, an upper through pipe 3 is arranged above the lower through pipe 2, the lower through pipe 2 and the upper through pipe 3 are arranged at intervals, four corners of the lower through pipe 2 and the upper through pipe 3 are fixedly connected with each other, a feeding hole 4 is formed in the upper end of the upper through pipe 3, a coarse screening plate 5 is fixedly arranged at the feeding hole 4, a fine screening plate 18 is arranged between the lower through pipe 2 and the upper through pipe 3, a fixed block 20 is fixedly arranged on the side wall of the fine screening plate 18, a telescopic rod 21 is fixedly arranged between the fixed block 20 and the upper wall of the lower through pipe 2, a vibrating spring 22 is fixedly connected between the fixed block 20 and the upper wall of the lower through pipe 2, the vibrating spring 22 is arranged at the outer wall of the telescopic rod 21, a preheating plate 6 is arranged at two sides of the outer walls of the lower through pipe 2 and the upper through pipe 3 through sliding limiting components, a fixed plate 23 is fixedly arranged at two ends of the inner wall of the lower end of the upper through pipe 3, a plurality of sliding rods 24 are arranged between the two fixed plates 23 in a sliding way, the sliding rods 24 and the fine screening plates 18 are correspondingly arranged, a rotating shaft 25 is fixedly arranged on the upper wall of the fine screening plates 18, two rotating plates 26 are rotatably arranged at the rotating shaft 25, lantern rings 27 are fixedly arranged at the tail ends of the two rotating plates 26, the two lantern rings 27 are respectively sleeved on the corresponding two sliding rods 24, so that when the fine screening plates 18 move downwards under the action of a cam 9, the rotating shaft 25 moves downwards, the two rotating plates 26 are pulled to rotate, the two sliding rods 24 sleeved by the lantern rings 27 are close to each other, larger mixture between the sliding rods 24 is supported while the larger mixture between the sliding rods 24 is clamped, the crushing process of the mixture is conveniently matched with a crushing needle 31, a connecting plate 7 is fixedly arranged at the side wall of the lower end of the upper through pipe 3, a motor 8 is arranged between the connecting plate 7 and the outer wall of the upper through pipe 3, the motor 8 and the connecting plate 7 are fixedly connected, the vibrating assembly is arranged between the motor 8 and the fine screening plate 18, the crushing assembly is arranged between the inner wall of the upper through pipe 3 and the motor 8, the crushing assembly is correspondingly arranged above the sliding rod 24, the cam 9 rotates for one circle through the mutual cooperation of the motor 8, the cam 9, the sliding rod 24 and the like, the fine screening plate 18 moves up and down in the vertical direction for two times, the corresponding two sliding rods 24 are mutually close to and separated for two times, the crushing needle 31 crushes the larger waste mixture supported by the sliding rod 24 once, the process can crush the larger waste mixture, meanwhile, the mutual cooperation transmission between the sliding rod 24 and the fine screening plate 18 can perform certain stirring and mixing functions on the mixture on the fine screening plate 18, the situation that the mesh of the fine screening plate 18 is blocked is prevented, the screening effect of the fine screening plate 18 is guaranteed, the crushing and screening processes are mutually matched, the crushed mixture is convenient to carry out, and the larger mixture can be automatically crushed by the crushing needle 31 during screening.
Embodiment two:
referring to fig. 1 to 10, the present embodiment provides a technical solution based on the first embodiment: the sliding limiting assembly comprises a sliding groove 11 arranged on the side wall of the upper end of the lower through pipe 2, a sliding block 10 is arranged in the sliding groove 11 in a sliding manner, a reset spring 12 is fixedly arranged between the lower end of the sliding block 10 and the bottom wall of the sliding groove 11, and the upper end of the sliding block 10 is fixedly connected with the preheating plate 6;
the magnetic strips 16 are fixedly arranged at the side wall of the lower end of the upper through pipe 3, the magnetic blocks 17 are correspondingly and fixedly arranged at the upper end of the preheating plate 6, and the magnetic blocks 17 and the magnetic strips 16 are mutually adsorbed, so that when the fine screening plate 18 needs to be replaced and maintained, the pipe wall is arranged, the preheating plate 6 is powered off, the magnetic blocks 17 and the magnetic strips 16 on the preheating plate 6 are pulled to be separated, the preheating plate 6 compresses the reset spring 12 and moves downwards under the action of gravity, and then the fixing block 20 and the telescopic rod 21 are separated, so that the fine screening plate 18 is convenient to replace, and the screening quality is ensured;
the vibration assembly comprises a supporting block 19 fixedly arranged on the side wall of the fine screening plate 18, the other end of the motor 8 is connected with a cam 9, the side wall of the cam 9 and the side wall of the supporting block 19 are mutually attached, so that the motor 8 can drive the cam 9 to rotate during operation, the cam 9 rotates to drive the supporting block 19 to continuously move in the vertical direction, and the fine screening plate 18 continuously vibrates under the action of the cam 9 rotating at a high speed, so that the screening effect is achieved;
the crushing assembly comprises crushing plates 28 which are arranged at the two ends of the inner wall of the upper through pipe 3 in a sliding manner, a plurality of cross rods 30 are fixedly arranged between the two crushing plates 28, guide pins 32 are uniformly and fixedly arranged at the upper ends of the cross rods 30, a plurality of crushing pins 31 are uniformly and fixedly arranged at the lower ends of the cross rods 30 and the crushing plates 28, and guide plates 29 are fixedly arranged at the upper ends of the two crushing plates 28;
the side wall of the upper through pipe 3 is correspondingly provided with a through hole 13, a connecting rod 14 is arranged in the through hole 13 in a sliding way, the connecting rod 14 penetrates through the side wall of the upper through pipe 3, one end of the connecting rod 14 is fixedly connected with a guide plate 29, a transmission rod 15 is rotationally arranged between one ends of the other end cam 9 of the connecting rod 14 and is matched with the action of a sliding rod 24, so that larger waste mixed materials at a screening part on the fine screening plate 18 can be supported by two sliding rods 24 corresponding to each other, and under the combined action of the connecting rod 14 and the transmission rod 15, the cam 9 continuously drives the connecting rod 14 to move in the vertical direction, thereby driving the guide plate 29 to move, so that a crushing needle 31 moves rapidly in the vertical direction, and in the transmission process of the cam 9, the connecting rod 14 and the transmission rod 15, when the cam 9 pushes a supporting block 19 to move downwards, namely, the fine screening plate 18 moves downwards, at the moment, the two sliding rods 24 corresponding to each other are mutually close to each other through the rotation of a rotating shaft 25 and a rotating piece 26, the two sliding rods 24 corresponding to each other, the waste mixed materials screened out can be separated, the two sliding rods 9 move relatively close to each other, the two corresponding crushing rods 24 in the vertical sliding rods 24 can simultaneously move in the vertical direction, and the two sliding rods 24 are simultaneously, and the two sliding rods 24 corresponding to each other and the two crushing rods 18 move relatively to the fine screening plates 18 are in the vertical direction and the mixing rod 18 and the mixing rod is simultaneously and the sliding rod 18 and the corresponding to move relatively to the fine screening rod 18 in the sliding rod 18 and the moving in the vertical direction and the sliding rod 18 and the moving direction, preventing the situation of blocking at the mesh of the fine screening plate 18, ensuring the screening effect of the fine screening plate 18;
the fixed spacing slide that is equipped with in the centre of connecting rod 14, the correspondence is equipped with spacing spout in the through-hole 13, spacing slide slides and sets up in spacing spout, through the mutual cooperation of structure such as preheating plate 6, fine screening board 18 and broken needle 31, make the in-process that sieves the mixture is carried out to fine screening board 18, preheating plate 6 connects the electricity, constantly carry out the process that heats the preheating to the mixture of fine screening board 18 department, the heating process of cooperation heater 1, make the heating process of mixture more even mild, the problem that rapid heating is difficult to control the temperature has been solved, prevent that pitch segregation and local ageing's condition from taking place, the quality of product has been guaranteed, the broken less mixture of fine screening board 18 department is heated evenly more easily simultaneously, make the preheating effect better, the mixture after the heating is broken under the effect of broken needle 31 more easily, both complement each other, the production efficiency and the product quality of product have been increased.
And all that is not described in detail in this specification is well known to those skilled in the art.
When the device works, firstly, waste medium-temperature asphalt mixture is added to a coarse screening plate 5, then the waste mixture on the coarse screening plate 5 is subjected to preliminary crushing by manual operation through a hammer or external extrusion, so that the waste mixture can pass through the coarse screening plate 5, the mixture passing through the coarse screening plate 5 falls down to a guide needle 32 under the action of gravity, partial shattered but not shattered mixture is separated, and then the mixture passes through a sliding rod 24 to fall to a fine screening plate 18;
the mixture at the fine screening plate 18 is supported by two corresponding sliding rods 24 under the action of the sliding rods 24 matched with the rotation of the cam 9, so that the larger waste mixture at the screening position on the fine screening plate 18 can be supported by the corresponding two sliding rods 24 (in the process, part of the larger mixture can be clamped and crushed in the process of mutually approaching the sliding rods 24), under the combined action of the connecting rod 14 and the transmission rod 15, the cam 9 continuously drives the connecting rod 14 to move in the vertical direction under the combined action of the connecting rod 14, thereby driving the guide plate 29 to move, the crushing needle 31 moves quickly along the vertical direction, and in the transmission process of the cam 9, the connecting rod 14 and the transmission rod 15, when the cam 9 pushes the supporting block 19 to move downwards, namely, when the fine screening plate 18 moves downwards, the two sliding rods 24 are mutually approaching through the rotating shaft 25 and the rotating piece 26, one end of the cam 9 is at the lowest position, the crushing needle 31 moves downwards, the two sliding rods 24 move relatively closely, the two sliding rods 24 in the two corresponding sliding rods 24 can simultaneously, the two fine screening plates 18 can be separated in the process of mutually approaching the fine screening plate 18, the corresponding mesh holes of the two sliding rods 24 can be blocked, and the two fine screening plates 18 can be simultaneously moved relatively, and the two fine screening plates 18 can be simultaneously separated in the process of mutually and the mutual moving relatively moving the corresponding fine screening plate 24, the screening effect of the fine screening plate 18 is ensured;
and in the process of screening the mixture by the fine screening plate 18, the preheating plate 6 is powered on, the mixture at the fine screening plate 18 is continuously heated and preheated, the heating process of the heater 1 is matched, the heating process of the mixture is more uniform and mild, the problem that rapid temperature rise is difficult to control the temperature is solved, asphalt segregation and local aging are prevented, the quality of products is guaranteed, meanwhile, smaller mixture broken at the fine screening plate 18 is easier to be heated uniformly, the preheating effect is better, the heated mixture is easier to break under the action of the breaking needle 31, and the two complement each other, so that the production efficiency and the product quality of the products are improved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A preparation method of a medium-temperature asphalt recycling mixture is characterized by comprising the following steps of: the method comprises the following steps:
s1: crushing, sieving and preheating: adding the waste medium-temperature asphalt mixture into a waste treatment device, and preheating the mixture while screening and crushing the waste medium-temperature asphalt mixture, wherein the preheating temperature is controlled between 40 ℃ and 45 ℃ to obtain a pretreated mixture;
s2: heating and temporary storage: adding the pretreated mixture into a heater (1), heating and carrying out microwave treatment, and then temporarily storing in a storage bin in the heater (1);
s3: discharging, stirring and mixing: discharging the mixture subjected to microwave treatment in the storage bin into a hot stirrer, rapidly adding new medium-temperature asphalt, new aggregate, mineral powder and a regenerant according to the proportion, stirring and running for 10min by the hot stirrer to obtain a medium-temperature asphalt regenerated mixture, and controlling the stirring temperature in the hot stirrer to be between 70 and 90 ℃;
the waste treatment device comprises a lower through pipe (2) which is communicated with the upper end of a heater (1), an upper through pipe (3) is arranged above the lower through pipe (2), the lower through pipe (2) and the upper through pipe (3) are arranged at intervals, four corners of the lower through pipe (2) and the upper through pipe (3) are fixedly connected with each other, a feeding hole (4) is formed in the upper end of the upper through pipe (3), a coarse screening plate (5) is fixedly arranged at the feeding hole (4), a fine screening plate (18) is arranged between the lower through pipe (2) and the upper through pipe (3), a fixed block (20) is fixedly arranged on the side wall of the fine screening plate (18), a telescopic rod (21) is fixedly arranged between the fixed block (20) and the upper wall of the lower through pipe (2), a vibrating spring (22) is fixedly connected between the fixed block (20) and the upper wall of the lower through pipe (2), a feeding hole (4) is fixedly arranged at the outer wall of the telescopic rod (21), a plurality of sliding limiting plates (24) are arranged on the two sides of the lower through pre-heating plates (3), a sliding plate (24) are arranged between the two sliding plates (24) and the two sliding plates (24) are arranged on the two corresponding sliding plates (23), the upper wall of the fine screening plate (18) is fixedly provided with a rotating shaft (25), the rotating shaft (25) is provided with two rotating plates (26) in a rotating mode, the tail ends of the two rotating plates (26) are fixedly provided with lantern rings (27), the two lantern rings (27) are respectively sleeved on two corresponding sliding rods (24), the lower end side wall of the upper through pipe (3) is fixedly provided with a connecting plate (7), a motor (8) is arranged between the connecting plate (7) and the outer wall of the upper through pipe (3), the motor (8) is fixedly connected with the connecting plate (7), a vibrating assembly is arranged between the motor (8) and the fine screening plate (18), a crushing assembly is arranged between the inner wall of the upper through pipe (3) and the motor (8), and the crushing assembly is correspondingly arranged above the sliding rods (24);
the crushing assembly comprises crushing plates (28) which are arranged at two ends of the inner wall of the upper through pipe (3) in a sliding manner, a plurality of cross rods (30) are fixedly arranged between the two crushing plates (28), guide pins (32) are uniformly and fixedly arranged at the upper ends of the cross rods (30), a plurality of crushing pins (31) are uniformly and fixedly arranged at the lower ends of the cross rods (30) and the crushing plates (28), and guide plates (29) are fixedly arranged at the upper ends of the two crushing plates (28);
the side wall of the upper through pipe (3) is correspondingly provided with a through hole (13), a connecting rod (14) is arranged in the through hole (13) in a sliding manner, the connecting rod (14) penetrates through the side wall of the upper through pipe (3), one end of the connecting rod (14) is fixedly connected with a guide plate (29), and a transmission rod (15) is arranged between the other end of the connecting rod (14) and the side wall of the cam (9) in a rotating manner;
the sliding limiting assembly comprises a sliding groove (11) formed in the side wall of the upper end of the lower through pipe (2), a sliding block (10) is arranged in the sliding groove (11), a reset spring (12) is fixedly arranged between the lower end of the sliding block (10) and the bottom wall of the sliding groove (11), and the upper end of the sliding block (10) is fixedly connected with the preheating plate (6);
the magnetic strip (16) is fixedly arranged at the side wall of the lower end of the upper through pipe (3), a plurality of magnetic blocks (17) are correspondingly and fixedly arranged at the upper end of the preheating plate (6), and the magnetic blocks (17) and the magnetic strip (16) are mutually adsorbed.
2. The method for preparing a medium temperature asphalt recycling mixture according to claim 1, wherein: the vibration assembly comprises a supporting block (19) fixedly arranged on the side wall of the fine screening plate (18), the other end of the motor (8) is connected with a cam (9), and the side wall of the cam (9) and the side wall of the supporting block (19) are mutually attached.
3. The method for preparing the medium-temperature asphalt recycling mixture according to claim 1, wherein a limiting sliding plate is fixedly arranged in the middle of the connecting rod (14), a limiting sliding groove is correspondingly arranged in the through hole (13), and the limiting sliding plate is slidably arranged in the limiting sliding groove.
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