CN210031414U

CN210031414U - Grading screening plant-mixing asphalt heat regeneration matching equipment

Info

Publication number: CN210031414U
Application number: CN201920133036.5U
Authority: CN
Inventors: 谢俊伟; 陆学军; 安佰锋; 宋国林; 唐国翌
Original assignee: Shenzhen Galaxy Oriental Industry Co Ltd
Current assignee: Shenzhen Galaxy Oriental Industry Co Ltd
Priority date: 2019-01-25
Filing date: 2019-01-25
Publication date: 2020-02-07
Anticipated expiration: 2029-01-25

Abstract

The utility model provides a hierarchical screening plant-mixed asphalt thermal regeneration supporting equipment, include: the device comprises a hopper, a vibrating screen inclined belt, a lifter, a storage bin, a scale and a stirring cylinder; the vibrating screening inclined belt is arranged at a discharge port of the hopper and is used for classifying and screening the mixed reclaimed materials of the asphalt and the stone into different particle sizes; the elevator is used for transporting the reclaimed materials with different particle sizes to different storage bins respectively, the metering scale is arranged below the storage bins and used for weighing the reclaimed materials with different particle sizes respectively, the stirring cylinder is arranged below the metering scale, the stirring cylinder is pre-stored with processed fresh hot aggregate, and the reclaimed materials with different particle sizes and the fresh hot aggregate can be stirred and mixed. The utility model discloses a supporting equipment of hot regeneration of stage screening plant-mixed pitch, with low costs, physical screening efficiency is high, and the material that can the different particle diameters of accurate control adds the proportion, utilizes the heat energy of new hot aggregate to carry out once heating to the reclaimed materials, avoids the ageing problem of secondary.

Description

Grading screening plant-mixing asphalt heat regeneration matching equipment

Technical Field

The utility model relates to a pitch highway pavement equipment field, in particular to supporting equipment of hot regeneration of hierarchical screening plant-mixed pitch.

Background

Recycled asphalt pavement has been studied and put into practical use since 1915 in the united states. The consumption of the regenerated asphalt mixture in the 80 th of the 20 th century reaches about half of the total amount of the mixture. To date, the mixture recycling rate in the United states is as high as more than 80% per year, and exceeds 3 hundred million tons per year. Germany has recycled all of the waste asphalt pavement materials since 1978. Finland also has a related specialized organization to collect and store old pavement materials. By 2000 years in japan, the reclaimed asphalt mixture has exceeded 30% of the total mix, reaching 4700 ten thousand tons.

By 2017, the total mileage of the highway in China is over 450 kilometers, and according to the design service life of the asphalt pavement being 15 years, about over 10 percent of the pavement needs to be maintained every year, the renewable asphalt mixture is estimated to be over 2000 million tons every year, and the renewable asphalt mixture is expected to increase more rapidly. But the recycling rate of the asphalt mixture is very low and the asphalt mixture is scattered and not scaled. Causing a great deal of pollution and waste.

The asphalt mixture regenerating and utilizing technology is that the asphalt road surface needing to be repaired or discarded is dug, recovered, crushed and sieved, then mixed with new aggregate and new asphalt, and finally stirred to produce the regenerated asphalt mixture meeting the corresponding requirement. According to the investigation of the Federal road administration in America, the material cost can be saved by more than 50%, the road surface cost is reduced by about 25%, and the asphalt is saved by 50%.

The research, utilization and popularization of the asphalt regeneration technology have important display significance for reducing construction cost, reasonably utilizing resources, protecting ecological environment and promoting highway construction in China.

At present, the equipment for hot recycling of high quality mixed materials in factories of China basically depends on import, and the asphalt recycling agent with high quality on a scale is basically blank. The main reason is that the mechanism of asphalt regeneration is not well understood from the mechanism, and the development of new materials is lagged abroad for many years. The regeneration asphalt specification established by the state is still unsolved for the regeneration of the modified asphalt, and only has some rough guidance suggestions for the regeneration of the common asphalt. However, the application of the modified asphalt in our country is very common, and the modified asphalt is largely adopted to build a surface course in most areas. This creates a very contradictory situation.

The hot mix plant recycled asphalt equipment in foreign countries has high price, millions of equipment are available, and the application of the recycled asphalt mixture is abandoned in many areas due to the early investment problem of the equipment price.

Therefore, the development of new materials such as plant-mixed hot recycled asphalt matching equipment and a regenerant which are low in cost, high in quality and suitable for the national conditions of China has very important practical significance, and the development method is also an important measure for implementing the national energy-saving and emission-reducing strategy.

The existing market mainly uses the technology that the traditional intermittent asphalt regeneration equipment uses a second drying cylinder to heat the regenerated material. The equipment is provided with a set of special system on the basis of the original mixing equipment, and the system comprises a crushing and screening system, a supply system, a lifting system, a drying and heating system, a combustion system and a storage and weighing system of the old asphalt mixture. Currently, major regeneration equipment is provided by foreign manufacturers.

The main problems of the conventional intermittent asphalt regeneration equipment at present are as follows: 1) it is expensive. The price of the matching system is mainly 300-500 ten thousand RMB. 2) The secondary aging of the asphalt by the regenerative heating system is serious. The regenerated material is firstly heated in a drying system, and some regenerated materials are directly contacted with flame and then enter a stirring cylinder for heating. The two aging processes, and the like, seriously damage the durability of the asphalt pavement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem in the prior art and providing a grading screening plant-mixed asphalt thermal regeneration matching equipment.

The utility model discloses a supporting equipment of hot regeneration of stage screening plantmix asphalt includes in proper order along the flow direction of material: the device comprises a hopper, a vibrating screen inclined belt, a lifter, a storage bin, a scale and a stirring cylinder; the hopper is used for collecting and storing mixed reclaimed materials of asphalt and stone; the vibrating screening inclined belt is arranged at a discharge port of the hopper and is used for classifying and screening the mixed reclaimed materials into reclaimed materials with different particle sizes; the elevator is used for transporting the reclaimed materials with different particle sizes to different storage bins respectively, the metering scale is arranged below the storage bins and used for weighing the reclaimed materials with different particle sizes respectively, the stirring cylinder is arranged below the metering scale, treated fresh hot aggregate is stored in the stirring cylinder in advance, and the stirring cylinder can stir and mix the reclaimed materials with different particle sizes and the fresh hot aggregate.

In a preferred embodiment, the vibrating screen inclined belt comprises four stages, wherein triangular-like ribs are transversely arranged on the upper surface of the front-stage vibrating screen inclined belt, a transverse flow channel is formed between two adjacent triangular-like ribs, a baffle is arranged on the side edge of each stage of vibrating screen inclined belt in the front-stage vibrating screen inclined belt, which is in contact with the next-stage vibrating screen inclined belt, and the height of each triangular-like rib is lower than that of the baffle; one side of the last stage of vibration screening inclined belt, which is far away from the last stage of vibration screening inclined belt, is provided with a baffle plate, so that a longitudinal flow channel is formed on each stage of vibration screening inclined belt along the length direction of the belt.

In a preferred embodiment, the vibrating screen inclined belts of the four stages are sequentially arranged side by side, and a notch is arranged on the baffle of each vibrating screen inclined belt of the first three stages at a position crossed with the transverse flow channel and corresponds to the transverse flow channel of the vibrating screen inclined belt of the next stage; and the level four the oblique belt of vibrations screening the minimum width of transverse flow way along the array direction of belt reduces in proper order for the material of less particle diameter can flow in the oblique belt of next stage vibrations screening, the great material of particle diameter along longitudinal flow moves the terminal of the oblique belt of each grade vibrations screening, thereby will mix the recovery material screening and become the material of four kinds of different particle diameters.

In a preferred embodiment, on each stage of the vibrating screening inclined belts in the first three stages, the triangular-like ribs are larger in size at one end close to the next stage of the vibrating screening inclined belt, so that the transverse flow channels are triangular-like, and the flow channel width is narrower at one end close to the next stage of the vibrating screening inclined belt; level four the oblique belt of vibrations screening horizontal runner's height along the array orientation of belt reduces in proper order, and last one-level vibrations screening oblique belt the export of horizontal runner is established at the oblique belt handing-over department with next one-level vibrations screening, thereby makes the follow the oblique belt of last one-level vibrations screening the material that horizontal runner came out can seamlessly arrive the oblique belt of next one-level vibrations screening.

In a preferred embodiment, the system further comprises a recovery hopper for receiving and storing the materials which are screened out by the vibrating screening inclined belt and do not meet the requirement on the particle size, and the terminal ends of the last three stages of the vibrating screening inclined belts are connected with the hoisting machine.

In a preferred embodiment, in the four-stage inclined vibrating screen belt, a hole is further formed in the baffle of each stage of inclined vibrating screen belt in the first three stages, and the inner diameter of the hole is smaller than or equal to the minimum width of the transverse flow channel of the stage of inclined vibrating screen belt, so that materials with the particle size meeting requirements in materials moving along the longitudinal flow channel of the stage of inclined vibrating screen belt can reach the next stage of inclined vibrating screen belt through the hole.

In a preferred embodiment, a meter is installed inside the storage bin, the meter is electrically connected with a PLC (programmable logic controller) and can feed back signals to the PLC, and the PLC automatically starts or suspends the operation of all equipment ranging from the hopper to the storage bin according to the signals fed back by the meter and has a corresponding alarm prompting function.

In a preferred embodiment, the material in the scale enters the mixing bowl through a chute, and a flap gate is provided within the chute for effecting delivery and emergency stop of the material.

In a preferred embodiment, the storage bin, the weighing scale and the bottom of the stirring cylinder are all provided with a pneumatic door opening and closing device controlled by a controller, and the controller is electrically connected with a central control room.

In a preferred embodiment, remote monitoring devices are arranged at the positions of the vibrating screen inclined belt, the lifting machine, the metering scale and the stirring cylinder and are used for assisting remote control.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a supporting equipment of hot regeneration of hierarchical screening plant-mixed pitch, the former asphalt mixing plant of cooperation is from the dry cylinder of the former asphalt mixing plant of taking equipment or reconfiguration's churning jar and being used for processing high temperature building stones to carry out work, no longer need additionally dispose the dry heating device of cylinder, reduce cost can increase substantially, can equip supporting control below 100 ten thousand yuan.

Additionally, the utility model discloses a supporting equipment of hot regeneration of classifying screen plant-mixed pitch has avoided heating old and useless pitch material at drying system earlier, but directly through the oblique belt of vibrations screening in old and useless pitch transportation, utilizes the physics mode to realize the classifying screen of different particle diameters, and is efficient to the material that can the different particle diameters of accurate control adds the proportion, and adds the mixing bowl with the old and useless pitch material of different particle diameters according to the material ratio of reasonable settlement. The waste materials are mixed with high-temperature stone materials (namely new hot aggregates) treated by a drying roller of an original asphalt mixing plant in a mixing tank, the stone materials are uniformly and effectively heated to corresponding temperatures at one time through the temperature of the stone materials, the regenerated asphalt mixture reaches the standard by fully utilizing heat, and the mixing temperature is ensured and the new and old asphalt is uniformly mixed on the premise of not burning the old asphalt. The utility model discloses effectively utilized the heat energy of the new hot aggregate (be the high temperature building stones after former pitch mixing plant drying drum handles promptly) in the agitator, carried out primary heating to the reclaimed materials, avoided the secondary ageing problem of traditional intermittent type formula pitch regeneration facility to the reclaimed materials.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, drawings of other embodiments can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of the overall structure of a plant-mixed asphalt thermal regeneration supporting device for grading and screening according to an embodiment of the present invention.

Fig. 2 is a schematic top view of an embodiment of the present invention illustrating the hopper and the vibrating screen slanted belt.

Fig. 3 is a schematic structural view of an embodiment of the present invention.

Figure 4 is a schematic cross-sectional view of the vibrating screen inclined belt of figure 2 at a-a according to the present invention.

Reference numerals:

the device comprises a hopper 1, a vibrating screen inclined belt 2, a lifter 3, a storage bin 4, a meter 5, a controller 6, a scale 7, a chute 8, a flap gate 9, a stirring cylinder 10 and a recovery hopper 11;

a zero-order vibrating screen inclined belt 20, a first-order vibrating screen inclined belt 21, a second-order vibrating screen inclined belt 22 and a third-order vibrating screen inclined belt 23;

the triangular-like ribs 24 form transverse flow passages 25, baffles 26, notches 27 and holes 28.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following embodiments. Wherein like reference numerals refer to like parts unless otherwise specified. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.

The utility model discloses a supporting equipment of hot regeneration of hierarchical screening plant-mixed pitch, its overall structure schematic diagram is shown in figure 1, including hopper 1, vibrations screening oblique belt 2, lifting machine 3, storage storehouse 4, counter 5, controller 6, measurement balance 7, chute 8, flap gate 9, agitator tank 10, recovery hopper 11. The hopper 1 is used for collecting and storing a mixed reclaimed material of asphalt and stone recovered from a road surface, the discharge port of the hopper 1 is an inclined outlet, and the discharge port is butted with the vibrating screen inclined belt 2.

The vibrating screening inclined belt 2 comprises four stages, namely a zero-stage vibrating screening inclined belt 20, a first-stage vibrating screening inclined belt 21, a second-stage vibrating screening inclined belt 22 and a third-stage vibrating screening inclined belt 23 as shown in fig. 2, and is used for classifying and screening materials with different particle sizes, wherein the zero-stage vibrating screening inclined belt 20 is arranged at a discharge opening of the hopper 1.

In the four-stage vibrating screen inclined belt, the structures of the front three-stage (i.e. the zero-stage, the first-stage and the second-stage) vibrating screen inclined belts are similar, as shown in fig. 2 and 3, triangular-like ribs 24 are transversely arranged on the four-stage vibrating screen inclined belt, and a transverse flow channel 25 is formed between two adjacent triangular-like ribs 24 on each stage vibrating screen inclined belt, as shown by an arrow in fig. 3. In addition, a baffle 26 is further arranged on the side of each vibration screening inclined belt in the first three stages, which is in contact with the next vibration screening inclined belt, and the height of the triangle-like ribs 24 is lower than that of the baffle 26, so that a longitudinal flow channel is formed on each vibration screening inclined belt along the length direction of the belt, as shown by a downward arrow in fig. 2.

The four-stage vibrating screen inclined belts are sequentially arranged side by side as shown in fig. 2, and a gap 27 is arranged at a position on the baffle 26 of each stage of vibrating screen inclined belt in the previous three stages, which is intersected with the transverse flow channel 25, and the gap 27 corresponds to the transverse flow channel 25 of the next stage vibrating screen inclined belt, as shown in fig. 2 and 3, so that the material can move to the transverse flow channel 25 of the next stage vibrating screen inclined belt along the transverse flow channel 25 of the previous stage vibrating screen inclined belt. On the oblique belt of each grade vibrations screening in the third grade in the past, the one end size that class triangle-shaped rib 24 is close to the oblique belt of next grade vibrations screening is great, as shown in fig. 3, make transverse flow channel 25 narrow down at the one end runner width that is close to the oblique belt of next grade vibrations screening, and the minimum width of transverse flow channel 25 of each grade vibrations screening oblique belt in the third grade in the past is different, the oblique belt 20 of zero order vibrations screening, the oblique belt 21 of first grade vibrations screening, the oblique belt 22 of second grade vibrations screening, the minimum width of transverse flow channel 25 reduces in proper order, thereby reach the purpose of screening different particle diameter materials, make the material of less particle diameter just can flow into the oblique belt of next grade vibrations screening, the material that the particle diameter is great moves to the terminal of each grade vibrations screening oblique belt along longitudinal flow channel.

In a preferred embodiment, as shown in figure 4, figure 4 is a schematic cross-sectional view of the vibratory screen diagonal belts of figure 2 at a-a, the four vibratory screen diagonal belts are placed side-by-side in sequence, with the first vibratory screen diagonal belt 21 having a height slightly less than the height of the zero order vibratory screen diagonal belt 20 and the second vibratory screen diagonal belt 22 having a height slightly less than the height of the first vibratory screen diagonal belt 21. As shown in fig. 2, the transverse flow channel 25 of each stage of the vibrating screening inclined belt in the previous three stages is triangular, and a small outlet is arranged at the joint of the vibrating screening inclined belt in the next stage, so that the material coming out from the transverse flow channel of the vibrating screening inclined belt in the previous stage can seamlessly reach the vibrating screening inclined belt in the next stage. The third stage inclined vibrating screen belt 23 is structured as shown in fig. 2, and is not provided with triangular-like ribs 24, but the side of the third stage inclined vibrating screen belt far away from the upper stage inclined vibrating screen belt is still provided with a baffle 26.

Each level of vibration screening inclined belt can realize remote variable frequency speed regulation. Each grade of vibration screening inclined belt runs in an adjustable vibration mode, waste asphalt materials are divided into four materials with different particle sizes in the transportation process for transportation, wherein a vibration mesh screen is arranged at the terminal of the zero-grade vibration screening inclined belt 20 and used for screening out the materials which do not meet the particle size requirement completely and placing the materials into a recovery hopper 11, as shown in fig. 1.

In a preferred embodiment, as shown in fig. 3, the baffle 26 of the inclined belt of each vibrating screen in the first three stages is further provided with a hole 28, and the inner diameter of the hole 28 is smaller than or equal to the minimum width of the transverse flow channel 25 of the inclined belt of the vibrating screen stage, so that the materials moving along the longitudinal flow channel of the inclined belt of the vibrating screen stage can reach the inclined belt of the next vibrating screen stage through the hole 28. It will be appreciated that the baffles 26 of the third stage vibrating screen inclined belt 23 are not provided with holes 28.

As shown in fig. 1, the terminals of the last three stages (i.e., the first stage, the second stage, and the third stage) of the four-stage vibrating screen inclined belt are all connected with a hoisting machine 3, and the hoisting machine 3 is equipped with a high-power motor, so as to realize high hoisting efficiency. And a plate chain bucket elevator for three-time continuous operation is arranged in each elevator 3. The material conveying terminal of each hoister 3 corresponds to one storage bin 4, so that waste asphalt materials with different particle sizes and classified and screened are conveyed into different storage bins 4 respectively.

In a preferred embodiment, a meter 5 is arranged in each storage bin 4, and can be used for giving a signal fed back by the meter 5 to a PLC controller according to the metering requirement in the storage bin 4 set by a remote central control room, wherein the PLC controller is a main element for controlling the operation of equipment on site, automatically starts or suspends the operation of all equipment ranging from the hopper 1 to the storage bin 4 according to the signal fed back by the meter 5 and is accompanied with a corresponding alarm prompting function. The bottom of each storage bin 4 is provided with a pneumatic door opening and closing device controlled by a controller 6. Each controller 6 is electrically connected with the central control room, and different movement modes can be adjusted through remote control.

The lower part of the pneumatic type door opening and closing device at the bottom of each storage bin 4 is provided with a metering scale 7, the metering scales 7 are electrically connected with a central control room, the target weight of the metering scales 7 can be set remotely in the central control room, the actual weight fed back by the metering scales 7 can be displayed in real time, a controller 6 of the storage bin 4 can be remotely and manually/automatically adjusted according to requirements, and the weight of materials conveyed into the metering scales 7 by the storage bin 4 is accurately controlled. The bottom of the weighing scale 7 is provided with a pneumatic door opening and closing device controlled by the controller 6.

A mixing cylinder 10 is correspondingly arranged below the pneumatic type door opening and closing devices at the bottoms of the three scales 7 and is used for receiving waste asphalt materials with different particle sizes in the three scales 7. After the materials with accurate weight are obtained, the controller 6 of the metering scale 7 is remotely and manually/automatically adjusted by the central control room, so that the materials in the metering scale 7 are controlled to enter the stirring cylinder 10 through the chute 8. In order to more accurately control the weight of the material finally entering the mixing tank 10, the flap gate 9 is arranged at the outlet of the chute 8, so that the remote control of the material conveying and the emergency stop of the central control room can be realized.

The mixing tank 10 can be a self-contained device or a re-configuration of an original asphalt mixing plant, and the screened and measured waste asphalt materials, the hot aggregate and the asphalt liquid processed by the drying drum of the asphalt mixing plant are fully mixed in the mixing tank 10, wherein the hot aggregate and the asphalt liquid processed by the drying drum of the asphalt mixing plant are added into the mixing tank 10 through other paths or other modes.

The bottom of the stirring cylinder 10 is provided with a pneumatic door opening and closing device controlled by the controller 6, and the controller 6 can be remotely and manually/automatically adjusted in a central control room, so that stirred materials can be conveyed into containers such as transport vehicles.

In preferred embodiment, the utility model discloses a but the supporting equipment of hierarchical screening plant mixing pitch thermal regeneration, except setting up remote control, regulation, the part of settlement in the whole equipment, at every grade of vibrations screening oblique belt 2, every lifting machine 3, every metering balance 7 and agitator 10's key part all is equipped with remote monitoring device, supplementary remote control, thereby makes the utility model discloses a supporting equipment of hierarchical screening plant mixing pitch thermal regeneration, for realizing remote monitoring, digital intelligent control, manual/automatic switch operation mode provide the hardware basis, whole process can be accomplished at the control room, has very strong mobility and flexibility, and intelligent degree is high.

In the above embodiment, the vibrating screen inclined belt 2 includes four stages, and it is understood that in other embodiments, the vibrating screen inclined belt 2 includes two, three or more stages to realize classification screening of materials with different particle sizes.

Detailed description of the preferred embodiments. Placing the crushed reclaimed asphalt into a container with the diameter of 7m³Then the waste asphalt materials are divided into materials with different particle sizes by the vibrating screen inclined belt 2 in the hopper 1, and the materials with different particle sizes are respectively conveyed to the hoister 3. Waste asphalt materials with different particle sizes are conveyed to the high-position inclined belt through the hoister 3. The wastes with different grain diameters are conveyed to different storage bins 4 by an elevated inclined belt.A material level alarm is arranged in the storage bin 4, and the feeding of the hopper 1 can be automatically stopped when the material is full. The waste materials with different particle sizes are measured by different scales 7 and then are delivered to a mixing tank 10 through a high-level chute 8 according to a reasonably set material ratio. The waste materials can be firstly mixed with high-temperature stone materials treated by a drying roller of an original asphalt mixing plant, the stone materials are uniformly and effectively heated to corresponding temperatures at one time through the temperature of the stone materials, then a proper amount of new asphalt is selectively added according to specific conditions, the mixture is mixed for a certain time, and the discharged materials are discharged, so that the regenerated asphalt mixture meeting the relevant requirements can be produced.

In addition, any mixing station can be selectively matched for use according to the production capacity of the station, and does not depend on an inlet. The remote monitoring, control and manual/automatic switching mode are realized, and the system has strong maneuverability and flexibility. Additionally, the utility model discloses a supporting equipment of hot regeneration of hierarchical screening plantmix pitch, the energy consumption is low, and easy maintenance has avoided traditional intermittent type formula pitch regeneration facility to the secondary heating problem of pitch, and rational utilization heat energy has reduced the energy consumption. Simultaneously the utility model discloses a simple easy going of equipment, easy maintenance.

In other embodiments, waste asphalt materials with different particle sizes can be directly and uniformly mixed with original aggregates according to a certain proportion, then the mixture is lifted and conveyed to an original heating roller of an asphalt mixing plant, and then the mixture is uniformly metered and mixed to produce a regenerated asphalt mixture. However, with this arrangement, the regrind will age significantly. The produced recycled mixture can only be used in the construction of low-grade or low-requirement roads.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Moreover, the terms "zeroth," "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

It should be noted that, according to the implementation requirement, each component described in the present application can be divided into more components, and two or more components or parts of components can be combined into a new component to achieve the purpose of the present invention.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the technical field of the utility model belongs to the prerequisite of not deviating from the utility model discloses, can also make a plurality of equal substitution or obvious variants, performance or usage are the same moreover, all should regard as belonging to the utility model's scope of protection.

Claims

1. The utility model provides a hot regeneration supporting equipment of hierarchical screening plantmix pitch which characterized in that includes in proper order along the flow direction of material:

the device comprises a hopper, a vibrating screen inclined belt, a lifter, a storage bin, a scale and a stirring cylinder;

the hopper is used for collecting and storing mixed reclaimed materials of asphalt and stone; the vibrating screening inclined belt is arranged at a discharge port of the hopper and is used for classifying and screening the mixed reclaimed materials into reclaimed materials with different particle sizes; the elevator is used for transporting the reclaimed materials with different particle sizes to different storage bins respectively, the metering scale is arranged below the storage bins and used for weighing the reclaimed materials with different particle sizes respectively, the stirring cylinder is arranged below the metering scale, treated fresh hot aggregate is stored in the stirring cylinder in advance, and the stirring cylinder can stir and mix the reclaimed materials with different particle sizes and the fresh hot aggregate.

2. The equipment for graded screening plant-mixed asphalt thermal regeneration matching according to claim 1, wherein the vibrating screening inclined belts comprise four grades, triangular-like ribs are transversely arranged on the upper surfaces of the front three grades of vibrating screening inclined belts, a transverse flow channel is formed between every two adjacent triangular-like ribs, baffles are arranged on the side edges, in contact with the next grade of vibrating screening inclined belt, of each grade of vibrating screening inclined belts in the front three grades, and the height of each triangular-like rib is lower than that of each baffle; one side of the last stage of oblique belt of vibration screening, which is far away from the oblique belt of last stage of vibration screening, is provided with the baffle, thereby forming a longitudinal flow channel along the length direction of the belt on each stage of oblique belt of vibration screening.

3. The graded screening plant mix asphalt thermal recycling complete equipment according to claim 2, wherein the vibrating screening inclined belts of four grades are sequentially arranged side by side, and a notch is arranged on the baffle of each grade of vibrating screening inclined belt of the previous three grades at a position crossed with the transverse flow channel and corresponds to the transverse flow channel of the vibrating screening inclined belt of the next grade; and the four grades the vibration screening inclined belt the minimum width of the transverse flow channel is along the arrangement direction of the belt is reduced in sequence, so that the materials with different particle sizes flow into the next grade vibration screening inclined belt, or the materials move to the terminal of each grade vibration screening inclined belt along the longitudinal flow channel, and the mixed recycled materials are screened into four materials with different particle sizes.

4. The matched equipment for graded screening plant-mixed asphalt thermal regeneration of claim 3, wherein on each grade of the vibrating screening inclined belt in the previous three grades, the triangular-like ribs are larger in size at one end close to the next grade of the vibrating screening inclined belt, so that the transverse flow channels are triangular-like, and the flow channel width is narrower at one end close to the next grade of the vibrating screening inclined belt; level four the oblique belt of vibrations screening horizontal runner's height along the array orientation of belt reduces in proper order, and last one-level vibrations screening oblique belt the export of horizontal runner is established at the oblique belt handing-over department with next one-level vibrations screening, thereby makes the follow the oblique belt of last one-level vibrations screening the material that horizontal runner came out can seamlessly arrive the oblique belt of next one-level vibrations screening.

5. The equipment set for graded screening of hot recycling of plant-mixed asphalt according to claim 3, further comprising a recycling hopper for receiving and storing materials that are not in compliance with the requirements for particle size and that are screened out by the vibratory screening inclined belts, wherein the terminals of the last three of the four stages of the vibratory screening inclined belts are connected to the elevator.

6. The equipment of claim 3, wherein in the four stages of the inclined belt for plant mixing asphalt thermal regeneration, each stage of the inclined belt for plant mixing asphalt in the first three stages is further provided with a hole on the baffle plate, and the inner diameter of the hole is smaller than or equal to the minimum width of the transverse flow channel of the inclined belt for plant mixing asphalt, so that the materials with the particle size meeting the requirement in the materials moving along the longitudinal flow channel of the inclined belt for plant mixing asphalt can reach the next inclined belt for plant mixing asphalt through the hole.

7. The graded screening plant-mixed asphalt thermal regeneration matching equipment as claimed in claim 1, wherein a meter is installed inside the storage bin, the meter is electrically connected with a PLC (programmable logic controller) and can feed back signals to the PLC, and the PLC automatically starts or suspends operation of all equipment ranging from the hopper to the storage bin according to the signals fed back by the meter and has a corresponding alarm prompt function.

8. The graded screening plant mix asphalt thermal reclamation kit of claim 1, wherein the material in the scale enters the mixing tank through a chute, and a flap door is provided within the chute for effecting delivery and emergency stop of the material.

9. The graded screening plant-mixed asphalt thermal regeneration matching equipment as claimed in claim 1, wherein the bottom of the storage bin, the metering scale and the stirring cylinder are respectively provided with a pneumatic door opening and closing device controlled by a controller, and the controller is electrically connected with a central control room.

10. The graded screening plant mix asphalt thermal regeneration matching equipment as claimed in claim 1, wherein remote monitoring devices are arranged at the positions of the vibrating screening inclined belt, the hoisting machine, the metering scale and the stirring cylinder for assisting remote control.