CN113802434A

CN113802434A - Process and device for regenerating used materials of asphalt pavement

Info

Publication number: CN113802434A
Application number: CN202111119133.7A
Authority: CN
Inventors: 赵飞; 杨振东; 张涛; 钟毅; 何珊珊
Original assignee: Anhui Zhongyu Environmental Protection Material Co ltd
Current assignee: Anhui Zhongyu Environmental Protection Material Co ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2021-12-17

Abstract

The invention relates to the technical field of asphalt old material regeneration equipment, in particular to a process and a device for regenerating an old material of an asphalt pavement, which comprises a feeding conveyer belt, one side of the feeding conveyer belt is provided with a drying device, a dust removal pipe is inserted in the high side of the drying device, the other end of the dust removal pipe is fixedly connected with a bag-type dust remover, one side of the bag-type dust remover, which is far away from the dust removal pipe, is provided with an induced draft fan, the blowing fan is driven to rotate by driven rotation, so that the blowing fan generates gas, the generated gas interacts with the induced draft fan to increase the flow velocity of the original gas, the absorption of dust by the dust removal pipe is increased under the influence of wind blowing and the induced draft fan, and simultaneously, gas is blown on the surface of the material, so that the evaporation of the moisture of the material is accelerated, and the dust removal effect on the material is improved, thereby solving the problems of slow airflow velocity, poor dust removal and poor drying effect on materials.

Description

Process and device for regenerating used materials of asphalt pavement

Technical Field

The invention relates to the technical field of asphalt old material regeneration equipment, in particular to a process and a device for regenerating an old material of an asphalt pavement.

Background

With the rapid development of highway and airport construction in China, the highway mainly comprising asphalt pavement is 60 kilometers, the asphalt is a blackish brown complex mixture composed of hydrocarbons with different molecular weights and non-metallic derivatives thereof, is one of high-viscosity organic liquids, mostly exists in a liquid or semisolid oil form, is mainly used for industries such as paint, plastics, rubber and the like, pavements and the like, a plurality of highways enter major and middle repair periods at present, the waste amount of an old asphalt layer reaches 300 million tons, and if the waste material of the old asphalt layer can be recycled, resources are saved, the pollution to the environment is reduced, and considerable economic benefit and social benefit are achieved.

At present, current equipment carries out the regeneration process at pitch, adopt second stoving section of thick bamboo heating method, when drying wet material, the inside gas of stoving bucket receives the influence formation air current of draught fan, but there is serious problem, the air current velocity of flow of formation is slow, the stoving effect that produces the material is poor, influence the dust removal effect to the material simultaneously, and current equipment sieves the material and adopts the reciprocating sieve, the reciprocating sieve direction is single, the effect of screening is poor, the screening of very big influence material.

In view of the above technical drawbacks, a solution is proposed.

Disclosure of Invention

The invention aims to: drive the fan of blowing through driven rotation and rotate, make the fan of blowing produce gas, the gaseous and the original gaseous velocity of flow of draught fan interact increase of production, accelerate gas to blow on the surface of material, material moisture's evaporation with higher speed, can improve the stoving effect of material, can help improving the dust removal effect to the material again, thereby it is slow to solve the air current velocity of flow that exists, the poor problem of the stoving effect poor that removes dust and produce the material, furthermore, because the transmission connecting rod carries out up-and-down motion, make the screening net drive the material and roll when vibrations, thereby improve the screening effect of material, avoid the material to appear piling up simultaneously, it is single to solve the reciprocating sieve direction that exists, the poor problem of screening effect.

The purpose of the invention can be realized by the following technical scheme: the regeneration process of the old asphalt pavement material comprises the following steps:

the method comprises the following steps: placing the materials to be dried on the upper surface of the feeding conveyer belt for conveying, controlling the conveying speed of the feeding conveyer belt, and conveying the materials on the feeding conveyer belt into the drying equipment;

step two: the drying equipment is controlled to work externally, so that the internal heating temperature of the drying equipment is about the temperature, and meanwhile, the bag-type dust remover and the draught fan synchronously run, at the moment, the material enters the drying barrel, the drying barrel drives an external driven gear to start rotating while rotating, so that the blowing fan starts rotating, the air flow generated by the blowing fan at the moment is discharged from the inside of the stirrer, the air flow enters from the low end of the drying barrel and is discharged from the inside of the high-end dust removal pipe, the air flow accelerates the drying of the material by knowing the Bernoulli principle, meanwhile, dust is driven to enter the inside of the dust removal pipe and is discharged into the environment through the treatment of the bag-type dust remover, and under the interaction of the generated air flow and the draught fan, the drying efficiency can be improved, and the environment pollution can be avoided;

step three: the processed materials enter the interior of the elevator, enter the interior of the screening mechanism from the interior of the feeding pipe through the lifting of the elevator, and the driving turntable on the positioning frame rotates by controlling an external motor, so that the driving turntable drives the positioning pin to rotate circumferentially, and the positioning pin drives the transmission connecting rod to reciprocate up and down;

step four: the transmission connecting rod moves up and down in a reciprocating manner, so that the transmission connecting rod drives the positioning sliding plate to slide up and down, the initial position of the screening net is high at the left side and low at the right side, when the positioning sliding plate ascends, and the left end of the screening net is in contact with the auxiliary pressure rod, the screening net drives the limiting rotating shaft to rotate along with the continuous ascending of the positioning sliding plate, meanwhile, the torsion spring elastically deforms, the positioning sliding block slides in the arc-shaped sliding rail, the screening net gradually changes into high at the left side and low at the right side, then, materials roll on the upper surface of the screening net, and the screening net drives the materials to roll while vibrating, so that the screening effect of the materials is improved;

when the positioning sliding plate descends, the sieving net is slowly restored to the original position due to the influence of the restoring force of the torsion spring, and at the moment, materials are also rolled on the upper surface of the sieving net, so that the sieving effect of the materials is improved, and meanwhile, the materials are prevented from being accumulated;

step five: due to the fact that the screening nets have different meshes, screened materials enter different classification boxes, the materials entering the classification boxes enter different storage bins through discharge pipes, when the materials need to be used, corresponding valves are opened, the materials enter aggregate metering bins, and finally the materials enter the stirrer to be stirred;

step six: when the stirring is required to be produced, the materials are fed according to the input ratio, so that the materials in an RAP material storage bin, an asphalt bin and a mineral powder bin finally enter the stirrer through the pipeline, in addition, an asphalt oil burner inside the asphalt bin burns, is heated and melted and then is fed into the stirrer, and is simultaneously conveyed through an asphalt pump, after the stirring and processing of the stirrer, the produced finished products enter the finished product bin, and finally enter the material tank and are transported away by a material transporting vehicle.

Preferably, the device for regenerating the old asphalt pavement materials is suitable for the process for regenerating the old asphalt pavement materials, and comprises a feeding conveyer belt, wherein one side of the feeding conveyer belt is provided with a drying device, a dust removal pipe is inserted into one side of the drying device, the other end of the dust removal pipe is fixedly connected with a bag-type dust remover, one side of the bag-type dust remover, which is far away from the dust removal pipe, is provided with an induced draft fan, one side of the drying device, which is far away from the feeding conveyer belt, is fixedly connected with a lifting machine, the upper end of the lifting machine is fixedly connected with a feeding pipe, a screening mechanism is sleeved outside the other end of the feeding pipe, the lower end of the screening mechanism is fixedly connected with an aggregate metering bin, the lower end of the aggregate metering bin is fixedly connected with a stirrer, and the lower end of the stirrer is provided with a finished product bin;

the inside of screening mechanism rotates and is connected with the drive worm, the upper surface of agitator passes through pipeline fixedly connected with RAP measurement storehouse, the upper surface in RAP measurement storehouse is provided with RAP material warehouse, the upper surface of agitator is provided with pitch measurement storehouse, pitch measurement storehouse upper surface passes through pipeline fixedly connected with pitch storehouse, be provided with the pitch pump between pitch measurement storehouse and the agitator, the upper surface of agitator is located the right side fixedly connected with powdered ore measurement storehouse of lifting machine, the last fixed surface in powdered ore measurement storehouse is connected with the powdered ore storehouse.

Preferably, drying equipment includes the drying bucket, coaxial gear has been cup jointed to the outside of drying bucket, the inside of drying bucket is provided with hollow shoveling plate, and the through-hole has been seted up to the inside of hollow shoveling plate, one side meshing of coaxial gear is connected with driven gear, driven gear's inside is pegged graft and is had driven rotating shaft, the fan of blowing has been cup jointed to the one end outside of driven rotating shaft, and the fan of blowing is located driven gear's the place ahead, driven rotating shaft's other end fixedly connected with holding ring, protective housing has been cup jointed to the outside of drying bucket, the inside of pegging graft of rear end of drying bucket has the tuber pipe.

Preferably, the screening mechanism includes the screening case, the inside top surface fixedly connected with locating rack of screening case, the inside of locating rack is rotated and is connected with the drive carousel, the front surface fixedly connected with locating pin of drive carousel, the transmission connecting rod has been cup jointed to the outside of locating pin, the lower extreme fixedly connected with slip subassembly of transmission connecting rod, the front surface fixedly connected with screening subassembly of slip subassembly, the inside bottom surface fixedly connected with stand pipe of screening case, and stand pipe and transmission connecting rod mutually support, the inside of screening case is provided with the classification case, the inside of classification case is pegged graft and is had the discharging pipe.

Preferably, the inside of locating rack is connected with the transmission worm through the turbine meshing, the one end fixedly connected with transfer line that the locating rack was kept away from to the transmission worm, the other end of transfer line is connected with bevel gear one, one side meshing of bevel gear one is connected with bevel gear two, the inside of bevel gear two is pegged graft and is had same axostylus axostyle, and the upper end and the screening incasement wall fixed connection of same axostylus axostyle, the suction fan has been cup jointed to the lower extreme outside of same axostylus axostyle.

Preferably, the sliding assembly comprises a positioning sliding plate, a limiting rotating shaft is inserted into the positioning sliding plate, a torsion spring is sleeved outside the limiting rotating shaft, two ends of the torsion spring are respectively fixedly connected with the positioning sliding plate and the limiting rotating shaft, a limiting bolt is sleeved outside one end of the limiting rotating shaft, and the limiting bolt is located on the left side of the positioning sliding plate.

Preferably, the screening subassembly includes the screening net, the last surface symmetry fixedly connected with side bushing of screening net, and the side bushing mutually supports with the location slide, one side sliding connection of screening net has the guard plate, one side fixedly connected with location slider of screening net is kept away from to the guard plate, the arc slide rail has been cup jointed to the right-hand member outside of location slider, and the inner wall fixed connection of arc slide rail and screening case, the inside of screening case is located the left side of screening net and is provided with the division board, one side fixedly connected with that the division board is close to the screening net hides the pin, it is close to the one end fixedly connected with auxiliary pressure pole one of screening net to shelter from the pin, one side that the division board is close to the screening net is located the below fixedly connected with auxiliary pressure pole two of screening net.

Preferably, the partition plate is internally provided with an inclined chute, the lower end of the inclined chute is positioned above the classification box, the protective shell is internally provided with a cavity, the lower end of the drying barrel is positioned in the aggregate metering bin and is provided with a hole, and the hole is matched with the hollow shoveling plate.

The invention has the beneficial effects that:

(1) drive the fan of blowing through driven rotation and rotate, make the fan of blowing produce gas, the gaseous and the draught fan interact of production increases the velocity of flow of original gas, receive the influence of blowing and draught fan and increase the absorption of dust removal pipe to the dust, gas blows on the surface of material simultaneously, the evaporation of material moisture with higher speed, further improve equipment's stoving effect, help improving the dust removal effect to the material simultaneously again, thereby the air current velocity of flow who solves the existence is slow, the dust removal is poor and the poor problem of stoving effect that produces the material.

(2) Because the transmission connecting rod carries out up-and-down reciprocating motion, make the transmission connecting rod drive the location slide and slide from top to bottom, the screening net drives the material and rolls when vibrations simultaneously to improve the screening effect of material, avoid the material to appear piling up simultaneously, solve the shakeout screen direction singleness of existence, the problem that the screening effect is poor.

(3) Through the transmission between the gears, the suction fan absorbs the gas inside the screening box, so that the gas enters the bag-type dust remover through the hose to be treated, and the effect of treating the residual dust is achieved.

Drawings

The invention will be further described with reference to the accompanying drawings;

FIG. 1 is a perspective view of the structure of the present invention;

FIG. 2 is a side sectional view of the structure of the drying apparatus of the present invention;

FIG. 3 is an enlarged view of area A of FIG. 2 in accordance with the present invention;

FIG. 4 is a front cross-sectional view of the construction of the sifting mechanism of the present invention;

FIG. 5 is a schematic structural view of a driving turntable according to the present invention;

FIG. 6 is an enlarged view of area B of FIG. 4 in accordance with the present invention;

FIG. 7 is an enlarged view of the invention taken from area C of FIG. 5;

FIG. 8 is a schematic view of the drive worm of the present invention;

FIG. 9 is an enlarged view of area D of FIG. 4 in accordance with the present invention;

FIG. 10 is a side sectional view of the positioning slide of the present invention.

Illustration of the drawings: 1. a feeding conveyer belt; 2. a drying device; 3. a dust removal pipe; 4. a bag-type dust collector; 5. an induced draft fan; 6. a hoist; 7. a screening mechanism; 71. screening the box; 8. an aggregate metering bin; 9. a stirrer; 10. A finished product warehouse; 11. an RAP metering bin; 12. an RAP material storage bin; 13. an asphalt metering bin; 14. an asphalt bin; 15. An asphalt pump; 16. a mineral powder metering bin; 17. a mineral powder bin; 18. a positioning frame; 19. driving the turntable; 20. positioning pins; 21. a transmission connecting rod; 22. a sliding assembly; 221. positioning the sliding plate; 222. a limiting rotating shaft; 223. a torsion spring; 224. a limit bolt; 23. a feeding pipe; 24. a screen assembly; 241. screening the net; 242. a side bushing; 243. a protection plate; 244. positioning the sliding block; 245. an arc-shaped slide rail; 246. a partition plate; 247. a blocking lever; 248. a first auxiliary pressure lever; 249. a second auxiliary pressure lever; 25. a guide tube; 26. a classification box; 27. a discharge pipe; 28. a drive worm; 29. a transmission rod; 30. a first bevel gear; 31. a second bevel gear; 32. a coaxial rod; 33. An air suction fan; 01. a drying barrel; 02. a coaxial gear; 03. hollow shoveling plates; 04. a driven gear; 05. a driven rotating shaft; 06. a blower fan; 07. a positioning ring; 08. a protective housing; 09. a flexible air pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1-3, the invention relates to a process and a device for regenerating old materials on an asphalt pavement, comprising a feeding conveyer belt 1, a drying device 2 arranged on one side of the feeding conveyer belt 1, a main controller controlling the feeding speed of the feeding conveyer belt 1, a frame supporting the devices, a bag-type dust collector 4 fixed on the other end of the bag-type dust collector 3, a draught fan 5 arranged on one side of the bag-type dust collector 4 far from the dust collector 3, a lifter 6 fixed on one side of the drying device 2 far from the feeding conveyer belt 1, a feeding pipe 23 fixed on the upper end of the lifter 6, a sieving mechanism 7 sleeved on the other end of the feeding pipe 23, the lower end of the screening mechanism 7 is fixedly connected with an aggregate metering bin 8, the lower end of the aggregate metering bin 8 is fixedly connected with a stirrer 9, the lower end of the stirrer 9 is provided with a finished product bin 10, the drying equipment 2 comprises a drying barrel 01, the heating temperature of the drying barrel 01 is about 170 ℃ during working, a bag-type dust collector 4 and a draught fan 5 synchronously operate, a coaxial gear 02 is sleeved outside the drying barrel 01, a hollow shoveling plate 03 is arranged inside the drying barrel 01, a through hole is formed in the hollow shoveling plate 03, when wind exists, the wind blows into the drying barrel 01 from the inside of the hollow shoveling plate 03, then the material is dried, and the contact area between the material and the gas is increased;

one side of the coaxial gear 02 is engaged and connected with a driven gear 04, a driven rotating shaft 05 is inserted in the driven gear 04, a blowing fan 06 is sleeved outside one end of the driven rotating shaft 05, the blowing fan 06 is positioned in front of the driven gear 04, a positioning ring 07 is fixedly connected to the other end of the driven rotating shaft 05, a protective shell 08 is sleeved outside the drying barrel 01, a soft air pipe 09 is inserted in the rear end of the drying barrel 01, when drying is performed, the drying barrel 01 rotates and simultaneously drives the external driven gear 04 to start rotating through transmission between the gears, the driven gear 04 drives the blowing fan 06 to rotate through the driven rotating shaft 05, gas generated by the blowing fan 06 at the moment is discharged from the inside of the stirrer 9, the gas enters from the lower end of the drying barrel 01 and is discharged from the inside of the high-end dust removal pipe 3, and simultaneously the gas enters the inside of the hollow shoveling plate 03 from a hole at the lower end of the drying barrel 01, make gas blow off from the through-hole of hollow shoveling plate 03, then increase the area of contact of material and gas, avoid appearing accumulational phenomenon simultaneously, and the gas that blows off is used in the material, can know by bernoulli's principle:

in the formula, p is the pressure of certain point in the fluid, v is the velocity of flow of this point of fluid, ρ is fluid density, g is acceleration of gravity, h is this point height, C is a constant, when the velocity of flow grow of material top, then the pressure of material top diminishes, thereby make the dust on the material receive the influence of blowing and draught fan 5 to enter into the inside of sack cleaner 4 from dust removal pipe 3 and handle, increase the absorption of dust removal pipe 3 to the dust, gas blows on the surface of material simultaneously, the evaporation of material moisture is accelerated, further improve equipment's stoving effect, can improve the stoving effect of material, can help improving the dust removal effect to the material again.

Example 2:

referring to fig. 4-10, a driving worm 28 is rotatably connected inside the sieving mechanism 7, when the device is in operation, the driving worm 28 is driven by a turbine inside the positioning frame 18 to synchronously rotate by transmission between gears, an RAP metering bin 11 is fixedly connected to the upper surface of the stirrer 9 through a pipeline, an RAP material storage bin 12 is arranged on the upper surface of the RAP metering bin 11, an asphalt metering bin 13 is arranged on the upper surface of the stirrer 9, an asphalt bin 14 is fixedly connected to the upper surface of the asphalt metering bin 13 through a pipeline, an asphalt pump 15 is arranged between the asphalt metering bin 13 and the stirrer 9, an ore powder metering bin 16 is fixedly connected to the right side of the hoister 6 on the upper surface of the stirrer 9, an ore powder bin 17 is fixedly connected to the upper surface of the ore powder metering bin 16, when stirring is required, feeding is performed according to an input ratio, so that materials inside the RAP material storage bin 12, the asphalt bin 14 and the ore powder bin 17 finally enter the stirrer 9 through pipelines, in addition, the asphalt oil burner inside the asphalt bin 14 is burnt, heated and melted and then sent to be stirred, in addition, a certain proportion of reclaimed materials is added, the arrangement of an asphalt pump 15 is convenient for the flowing of asphalt when the asphalt is added, when the materials are added according to a certain proportion, the stirrer 9 is controlled externally, so that the stirrer 9 can fully stir the materials, and a finished product is produced after processing;

the materials are required to be screened between the added materials, at this time, the materials dried in the first embodiment are lifted by the lifter 6 and enter the screening mechanism 7 from the inside of the feeding pipe 23, the screening mechanism 7 comprises a screening box 71, the top surface of the inside of the screening box 71 is fixedly connected with a positioning frame 18, the inside of the positioning frame 18 is connected with a transmission worm 28 through a turbine in a meshing manner, one end of the transmission worm 28 far away from the positioning frame 18 is fixedly connected with a transmission rod 29, the other end of the transmission rod 29 is connected with a bevel gear one 30, one side of the bevel gear one 30 is connected with a bevel gear two 31 in a meshing manner, the inside of the bevel gear two 31 is inserted with a coaxial rod 32, the upper end of the coaxial rod 32 is fixedly connected with the inner wall of the screening box 71, the outside of the lower end of the coaxial rod 32 is sleeved with an air suction fan 33, and the bevel gear one 30 drives the bevel gear two bevel gears 31 to rotate through transmission between the gears, meanwhile, the second bevel gear 31 rotates and simultaneously drives the coaxial rod 32 to rotate, so that the coaxial rod 32 drives the suction fan 33 outside the lower end to rotate, the suction fan 33 rotates to generate wind power, the suction fan 33 absorbs gas inside the screening box 71, the gas enters the bag-type dust remover 4 through the hose to be treated, and the effect of treating residual dust is achieved;

in addition, the inside of the positioning frame 18 is rotatably connected with a driving turntable 19, the front surface of the driving turntable 19 is fixedly connected with a positioning pin 20, the outside of the positioning pin 20 is sleeved with a transmission connecting rod 21, the lower end of the transmission connecting rod 21 is fixedly connected with a sliding component 22, the front surface of the sliding component 22 is fixedly connected with a screening component 24, the screening component 24 comprises a screening net 241, because the installed screening nets 241 have different meshes, the mesh number of the uppermost mesh is largest and becomes smaller one by one, the material particles of the uppermost mesh are largest, the upper surface of the screening net 241 is symmetrically and fixedly connected with side leakage plates 242, the side leakage plates 242 and the side leakage plates 242 are matched with the positioning sliding plate 221 to play a role in protection, so that side leakage is avoided, one side of the screening net 241 is slidably connected with a protection plate 243, the screening net 241 is installed in a sliding manner, the screening net 241 is convenient to replace the screening net 241, one side of the protection plate 243, the side of the screening net 241 is fixedly connected with a positioning sliding block 244, an arc-shaped sliding rail 245 is sleeved outside the right end of the positioning sliding block 244, the arc-shaped sliding rail 245 is fixedly connected with the inner wall of the screening box 71, a partition plate 246 is arranged inside the screening box 71 and positioned on the left side of the screening net 241, an inclined sliding groove is formed inside the partition plate 246, and materials falling off in a rolling mode can conveniently enter the sorting box 26;

a shielding rod 247 is fixedly connected to one side of the separation plate 246 close to the sieving net 241, one end of the shielding rod 247 close to the sieving net 241 is fixedly connected with a first auxiliary pressure rod 248, one side of the separation plate 246 close to the sieving net 241 is positioned below the sieving net 241 and is fixedly connected with a second auxiliary pressure rod 249, the first auxiliary pressure rod 248 and the second auxiliary pressure rod 249 at two sides play a role in adjustment, a guide pipe 25 is fixedly connected to the inner bottom surface of the sieving box 71, the guide pipe 25 is matched with the transmission connecting rod 21, a classification box 26 is arranged inside the sieving box 71, a discharge pipe 27 is inserted into the classification box 26, when the driving turntable 19 rotates, the driving turntable 19 drives the positioning pin 20 to rotate circularly and then, the positioning pin 20 drives the transmission connecting rod 21 to reciprocate up and down, a sliding component 22 is fixedly connected to the lower end of the transmission connecting rod 21, the sliding component 22 comprises a positioning sliding plate 221, a limiting rotating shaft 222 is inserted into the positioning sliding plate 221, a torsion spring 223 is sleeved outside the limiting rotating shaft 222, two ends of the torsion spring 223 are fixedly connected with the positioning sliding plate 221 and the limiting rotating shaft 222 respectively, a limiting bolt 224 is sleeved outside one end of the limiting rotating shaft 222, the limiting bolt 224 is located on the left side of the positioning sliding plate 221, when the transmission connecting rod 21 pulls the positioning sliding plate 221 to ascend, the torsion spring 223 inside the positioning sliding plate 221 is elastically deformed, the limiting rotating shaft 222 rotates at the same time, the limiting bolt 224 plays a positioning effect on the limiting rotating shaft 222, a guide pipe 25 is fixedly connected to the inner bottom surface of the screening box 71, the guide pipe 25 is matched with the transmission connecting rod 21, a classification box 26 is arranged inside the screening box 71, a discharge pipe 27 is inserted into the classification box 26, and collection box processing of materials is facilitated;

because the transmission connecting rod 21 reciprocates up and down, the transmission connecting rod 21 drives the positioning sliding plate 221 to slide up and down, the initial position of the sieving net 241 is left high and right low, in the process that the positioning sliding plate 221 ascends, when the left end of the sieving net 241 is contacted with the auxiliary pressure rod one 248, the sieving net 241 drives the limit rotating shaft 222 to rotate along with the continuous ascending of the positioning sliding plate 221, meanwhile, the torsion spring 223 generates elastic deformation in the positioning sliding plate 221, the positioning sliding block 244 slides in the arc-shaped sliding rail 245, the inclination angle of the sieving net 241 gradually changes to be left low and right high, then, the material rolls on the upper surface of the sieving net 241, the sieving net 241 drives the material to roll while vibrating, the material rolls from the right side of the sieving net 241, in the process of rolling, on one hand, the phenomenon of stacking of materials with different sizes is avoided, on the other hand, the sieving net 241 can conveniently sieve materials with different sizes, because the mesh number of the installed screening net 241 is different, the mesh number of the uppermost is the largest, the mesh number is reduced one by one, the particles of the uppermost material are the largest, the rolling material enters the inside of the classification box 26 from the separation plate 246 to be concentrated, the material entering the inside of the classification box 26 enters different storage bins through the discharge pipe 27, when the positioning sliding plate 221 descends, the influence of the auxiliary pressure rod one 248 on the screening net 241 is continuously reduced, in addition, the screening net 241 is slowly restored to the original position due to the influence of the restoring force of the torsion spring 223, at the moment, the material is also rolled on the upper surface of the screening net 241, the screening net 241 drives the material to roll when vibrating, the screening effect of the material is improved, and meanwhile, the material is prevented from being accumulated.

The working principle of the invention is as follows: materials are added into a drying device 2 through a feeding conveyer belt 1, the drying device 2 is enabled to work by opening an external power supply, the internal heating temperature of the drying device 2 is enabled to be about 170 ℃, when the drying is carried out, a blowing fan 06 is enabled to rotate through transmission between gears, gas generated through rotation enters from the low end of a drying barrel 01, blown gas acts on the materials, when the flow velocity above the materials is increased, the pressure above the materials is reduced, so that dust on the materials enters into a bag-type dust remover 4 from a dust removing pipe 3 to be treated under the influence of wind blowing and a draught fan 5, the absorption of the dust by the dust removing pipe 3 is increased, meanwhile, the gas is blown on the surface of the materials, the evaporation of moisture of the materials is accelerated, the drying effect of the device is further improved, the drying effect of the materials can be improved, and the dust removing effect of the materials can be improved, thereby solving the problems of slow airflow velocity, poor dust removal and poor drying effect on materials.

In the working process, the transmission connecting rod 21 reciprocates up and down to gradually change the inclination angle of the sieving net 241 to be lower left and higher right, then the materials roll on the upper surface of the sieving net 241, the sieving net 241 drives the materials to roll while vibrating, the rolled materials enter the classifying box 26 from the separating plate 246 to be concentrated, the materials entering the classifying box 26 enter different storage bins through the discharging pipe 27, when the positioning sliding plate 221 descends, the influence of the auxiliary pressure rod one 248 on the sieving net 241 is continuously reduced, in addition, the sieving net 241 is slowly restored to the original position due to the influence of the restoring force of the torsion spring 223, at the moment, the materials also roll on the upper surface of the sieving net 241, so that the sieving net 241 drives the materials to roll while vibrating, thereby improving the sieving effect of the materials, meanwhile, the materials are prevented from being accumulated, and the problems that the existing vibrating screen is single in direction and poor in screening effect are solved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention. The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The regeneration process of the old asphalt pavement materials is characterized by comprising the following steps:

the method comprises the following steps: placing the materials to be dried on the upper surface of the feeding conveyer belt (1) for conveying, controlling the conveying speed of the feeding conveyer belt (1), and conveying the materials on the feeding conveyer belt (1) to the interior of the drying equipment (2);

step two: the drying device (2) is controlled to work externally, the internal heating temperature of the drying device (2) is about 170 ℃, meanwhile, a bag-type dust remover (4) and an induced draft fan (5) run synchronously, at the moment, materials enter the drying barrel (01), the drying barrel (01) drives an external driven gear (04) to start rotating while rotating, a blowing fan (06) starts rotating, air flow generated by the blowing fan (06) is discharged from the inside of a stirrer (9), the air flow enters from the low end of the drying barrel (01) and is discharged from the inside of a high-end dust removal pipe (3), the drying of the materials is accelerated by the air flow, meanwhile, dust is driven to enter the inside of the dust removal pipe (3) and is discharged into the environment through the treatment of the bag-type dust remover (4), and the drying efficiency can be improved under the interaction of the generated air flow and the induced draft fan (5), but also can avoid polluting the environment;

step three: the processed materials enter the interior of a lifting machine (6), enter the interior of a screening mechanism (7) from the interior of a feeding pipe (23) through the lifting of the lifting machine (6), and enable a driving turntable (19) on a positioning frame (18) to rotate by controlling an external motor, so that the driving turntable (19) drives a positioning pin (20) to rotate circumferentially along with the positioning pin, and the positioning pin (20) drives a transmission connecting rod (21) to reciprocate up and down;

step four: the transmission connecting rod (21) reciprocates up and down, so that the transmission connecting rod (21) drives the positioning sliding plate (221) to slide up and down, the initial position of the screening net (241) is left high and right low, when the positioning sliding plate (221) ascends, when the left end of the screening net (241) is in contact with the auxiliary pressure rod I (248), the screening net (241) drives the limiting rotating shaft (222) to rotate along with the continuous ascending of the positioning sliding plate (221), meanwhile, the torsion spring (223) generates elastic deformation, the positioning sliding block (244) slides in the arc-shaped sliding rail (245), the screening net (241) gradually becomes left low and right high, materials roll on the upper surface of the screening net (241), and the screening net (241) drives the materials to roll while vibrating, so that the screening effect of the materials is improved;

when the positioning sliding plate (221) descends, the sieving net (241) is slowly restored to the original position due to the influence of the restoring force of the torsion spring (223), and at the moment, materials are also rolled on the upper surface of the sieving net (241), so that the sieving effect of the materials is improved, and meanwhile, the materials are prevented from being accumulated;

step five: due to the fact that the screening nets (241) are different in mesh number, screened materials enter different classification boxes (26), the materials entering the classification boxes (26) enter different storage bins through discharge pipes (27), when the materials need to be used, corresponding valves are opened, the materials enter an aggregate metering bin (8), and finally enter an agitator (9) for stirring;

step six: when stirring is required to be produced, feeding is carried out according to the input ratio, so that the materials in an RAP material storage bin (12), an asphalt bin (14) and a mineral powder bin (17) finally enter the stirrer (9) through a pipeline, in addition, asphalt oil (burner combustion heating melting) in the asphalt bin (14) is conveyed into the stirrer for stirring, meanwhile, the asphalt oil is conveyed through an asphalt pump (15), and after the stirring processing of the stirrer (9), the produced finished product enters the inside of a finished product bin (10), and finally enters a trough and is transported away by a material transporting vehicle.

2. An old asphalt pavement material regeneration device, which is suitable for the old asphalt pavement material regeneration process of claim 1, and comprises a feeding conveyer belt (1), and is characterized in that one side of the feeding conveyer belt (1) is provided with a drying device (2), one side of the drying device (2) close to the feeding conveyer belt (1) is internally inserted with a dust removal pipe (3), the other end of the dust removal pipe (3) is fixedly connected with a bag-type dust remover (4), one side of the bag-type dust remover (4) far away from the dust removal pipe (3) is provided with an induced draft fan (5), one side of the drying device (2) far away from the feeding conveyer belt (1) is fixedly connected with a lifting machine (6), the upper end of the lifting machine (6) is fixedly connected with a feeding pipe (23), the other end of the feeding pipe (23) is externally sleeved with a screening mechanism (7), and the lower end of the screening mechanism (7) is fixedly connected with an aggregate metering bin (8), the lower end of the aggregate metering bin (8) is fixedly connected with a stirrer (9), and a finished product bin (10) is arranged at the lower end of the stirrer (9);

the inside of screening mechanism (7) is rotated and is connected with drive worm (28), the upper surface of agitator (9) passes through pipeline fixedly connected with RAP measurement storehouse (11), the upper surface of RAP measurement storehouse (11) is provided with RAP material warehouse (12), the upper surface of agitator (9) is provided with pitch measurement storehouse (13), pitch measurement storehouse (13) upper surface passes through pipeline fixedly connected with pitch storehouse (14), be provided with pitch pump (15) between pitch measurement storehouse (13) and agitator (9), the upper surface of agitator (9) is located the right side fixedly connected with powdered ore measurement storehouse (16) of lifting machine (6), the upper surface fixedly connected with powdered ore storehouse (17) of powdered ore measurement storehouse (16).

3. The used asphalt pavement recycling apparatus according to claim 2, wherein the drying device (2) comprises a drying tub (01), a coaxial gear (02) is sleeved outside the drying barrel (01), a hollow shoveling plate (03) is arranged inside the drying barrel (01), a through hole is arranged in the hollow shoveling plate (03), one side of the coaxial gear (02) is engaged with a driven gear (04), a driven rotating shaft (05) is inserted into the driven gear (04), a blowing fan (06) is sleeved outside one end of the driven rotating shaft (05), the blowing fan (06) is positioned in front of the driven gear (04), the other end of the driven rotating shaft (05) is fixedly connected with a positioning ring (07), the outer part of the drying barrel (01) is sleeved with a protective shell (08), and a flexible air pipe (09) is inserted into the rear end of the drying barrel (01).

4. The asphalt pavement used material regeneration device according to claim 3, wherein the screening mechanism (7) comprises a screening box (71), the top surface of the inside of the screening box (71) is fixedly connected with a positioning frame (18), the inside of the positioning frame (18) is rotatably connected with a driving turntable (19), the front surface of the driving turntable (19) is fixedly connected with a positioning pin (20), the outside of the positioning pin (20) is sleeved with a transmission connecting rod (21), the lower end of the transmission connecting rod (21) is fixedly connected with a sliding component (22), the front surface of the sliding component (22) is fixedly connected with a screening component (24), the bottom surface of the inside of the screening box (71) is fixedly connected with a guide pipe (25), the guide pipe (25) and the transmission connecting rod (21) are matched with each other, the inside of the screening box (71) is provided with a classification box (26), a discharge pipe (27) is inserted into the classifying box (26).

5. The asphalt pavement old material regeneration device according to claim 4, characterized in that the inside of the positioning frame (18) is connected with a transmission worm (28) through a turbine in a meshing manner, one end of the transmission worm (28) far away from the positioning frame (18) is fixedly connected with a transmission rod (29), the other end of the transmission rod (29) is connected with a first bevel gear (30), one side of the first bevel gear (30) is connected with a second bevel gear (31) in a meshing manner, the inside of the second bevel gear (31) is spliced with a coaxial rod (32), the upper end of the coaxial rod (32) is fixedly connected with the inner wall of the screening box (71), and the outer part of the lower end of the coaxial rod (32) is sleeved with an air suction fan (33).

6. The asphalt pavement old material regeneration device according to claim 4, wherein the sliding assembly (22) comprises a positioning sliding plate (221), a limiting rotating shaft (222) is inserted into the positioning sliding plate (221), a torsion spring (223) is sleeved outside the limiting rotating shaft (222), two ends of the torsion spring (223) are respectively and fixedly connected with the positioning sliding plate (221) and the limiting rotating shaft (222), a limiting bolt (224) is sleeved outside one end of the limiting rotating shaft (222), and the limiting bolt (224) is located on the left side of the positioning sliding plate (221).

7. The asphalt pavement used material regeneration device according to claim 4, wherein the screening component (24) comprises a screening net (241), the upper surface of the screening net (241) is symmetrically and fixedly connected with side leakage plates (242), the side leakage plates (242) are matched with the positioning sliding plates (221), one side of the screening net (241) is slidably connected with a protection plate (243), one side of the protection plate (243), which is far away from the screening net (241), is fixedly connected with a positioning sliding block (244), the outside of the right end of the positioning sliding block (244) is sleeved with an arc-shaped sliding rail (245), the arc-shaped sliding rail (245) is fixedly connected with the inner wall of the screening box (71), a separation plate (246) is arranged on the left side of the screening net (241) in the screening box (71), one side of the separation plate (246), which is close to the screening net (241), is fixedly connected with a blocking rod (247), one end, close to the screening net (241), of the blocking rod (247) is fixedly connected with a first auxiliary pressure rod (248), and one side, close to the screening net (241), of the partition plate (246) is fixedly connected with a second auxiliary pressure rod (249) below the screening net (241).

8. The asphalt pavement used material regeneration device according to claim 7, wherein the partition plate (246) is internally provided with an inclined chute, the lower end of the inclined chute is positioned above the classification box (26), the interior of the protective shell (08) is provided with a cavity, the lower end of the drying barrel (01) is positioned inside the aggregate metering bin (8) and provided with a hole, and the hole is matched with the hollow shoveling plate (03).