CN216224610U - Asphalt reclaimed material crushing and screening production line - Google Patents

Abstract

The utility model relates to the technical field of crushing and screening equipment, in particular to an asphalt reclaimed material crushing and screening production line, which is characterized in that: the automatic material distribution device comprises a material distribution bin, a first conveying device, a second conveying device, a first finished product screening device, a crushing device, a third conveying device and a fourth conveying device, wherein the material distribution bin comprises a rack, an outer bin body, an inner bin body, a material receiving hopper body and a grate screen. The utility model has novel, practical and reliable integral structure, reasonable and flexible integral layout, can effectively meet the requirements of crushing and screening raw materials such as asphalt reclaimed materials and the like, effectively ensures the integral treatment capacity, improves the reliability of aggregate particle size classification, ensures that aggregates are efficiently utilized, and simultaneously can effectively avoid directly pressing the heavy weight of the materials on the first conveying equipment when a loader is used for feeding, can reduce the weight load and the conveying load caused to the first conveying equipment, can more smoothly convey the materials in the proportioning bin, and effectively prevents the problem of material blockage.

Description

Asphalt reclaimed material crushing and screening production line

Technical Field

The utility model relates to the technical field of crushing and screening equipment, in particular to an asphalt reclaimed material crushing and screening production line.

Background

The recovery crushing screening production line of current pitch reclaimed materials is relatively more common at present: firstly, putting a reclaimed asphalt material into a crusher, feeding the crushed reclaimed material into a screening machine through conveying equipment for screening and grading, and feeding the reclaimed material with larger particle size back to the crusher or resetting the crusher for crushing; and secondly, putting the raw materials of the asphalt reclaimed materials into a sieving machine for direct sieving and grading, and sieving the reclaimed materials with larger particle sizes again after vibrating by a loader or an excavator. The first method needs a crusher with larger power and larger processing material, the crusher not only needs to crush the reclaimed material with larger particle size, but also needs to occupy the space of the crusher for the reclaimed material with compliant particle size and without crushing, and consumes unnecessary processing capacity, the second method adopts construction engineering machinery for crushing, has low efficiency and space occupation, the reclaimed material crushing and screening transition is not flexible, and simultaneously needs manual operation to increase the workload of field operators, in addition, a proportioning bin used on the existing asphalt reclaimed material crushing and screening production line is only a simple bin body, after a loader is loaded, the material directly falls into the proportioning bin and is heavily pressed on a belt conveyor at the discharge end of the proportioning bin, and when more materials are accumulated in the proportioning bin, the belt conveyor can cause larger weight load, and at the moment, the conveying load of the belt conveyor is larger, the belt conveyor is easy to cause that the materials can not be conveyed out in time, and the problem of material blockage occurs at the discharge end of the proportioning bin, so that certain influence is caused on the normal work of the asphalt reclaimed material crushing and screening production line.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a crushing and screening production line for the reclaimed asphalt, which has novel, practical and reliable overall structure, reasonable and flexible overall layout, can effectively meet the requirements of crushing and screening of raw materials such as reclaimed asphalt, effectively ensure the overall treatment capacity, improve the reliability of aggregate particle size classification, ensure the high-efficiency utilization of aggregate, effectively avoid directly pressing the heavy weight of the material on first conveying equipment during loading of a loader, reduce the weight load and conveying load caused by the first conveying equipment, more smoothly convey the material in a proportioning bin and effectively prevent the problem of material blockage.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the utility model provides an asphalt reclaimed material crushing and screening production line, including proportioning bins, first conveying equipment, second conveying equipment, first finished product screening equipment, crushing equipment, third conveying equipment and fourth conveying equipment, the discharge end of proportioning bins meets with the feed end of first conveying equipment, the discharge end of first conveying equipment meets with the feed end of second conveying equipment, the discharge end of second conveying equipment meets with the feed end of first finished product screening equipment, install the multilayer screen cloth on the first finished product screening equipment, the top screen cloth discharge end of first finished product screening equipment meets with the feed end of crushing equipment, the discharge end of crushing equipment meets with the feed end of third conveying equipment, all the other screen cloth discharge ends and the bottom discharge end of first finished product screening equipment all share respectively with the feed end of corresponding fourth conveying equipment, proportioning bins includes the frame, the outer storehouse body, the interior storehouse body, The receiving hopper body and the grate screen are arranged, the outer hopper body is fixedly arranged on the frame, the inner hopper body is fixedly arranged in the outer hopper body, the grate screen is arranged on one side in the outer hopper body and positioned above the inner hopper body, the receiving hopper body is arranged on the other side in the outer hopper body and positioned between the inner hopper body and the grate screen, the grate screen is arranged downwards and inclines towards one side of the receiving hopper body, a receiving cavity which is upwards opened towards one side of the grate screen is arranged in the receiving hopper body, and a blanking port is formed between the grate screen and the receiving hopper body.

Furthermore, the discharge end of the third conveying device is connected with the feed end of the first finished product screening device.

Furthermore, the discharge end of the third conveying equipment is connected with the feed end of the second finished product screening equipment, multiple layers of screens are mounted on the second finished product screening equipment, and the discharge ends of the screens at all layers and the discharge end at the bottom of the second finished product screening equipment are respectively connected with the feed end of the corresponding fifth conveying equipment.

Further, the grid screen comprises an installation frame and a plurality of grids which are uniformly arranged at intervals along the length direction of the installation frame and fixedly installed on the installation frame, strip-shaped screen holes are formed between every two adjacent grids, each grid includes a top plate and a rib plate, the rib plates are fixedly arranged on the lower end face of the top plate, and a plurality of connecting plates fixedly connected with the installation frame are fixedly arranged at the lower ends of the rib plates.

Furthermore, the top plate is splayed, the width of the strip-shaped sieve holes is gradually increased along the advancing direction of the materials, and at least one strip-shaped wear-resistant block is fixedly arranged on the upper end face of the top plate.

Further, the one end both sides of installation frame are all fixed and are equipped with first fixed axle, are equipped with the bar notch that can make first fixed axle pass on the outer storehouse body, and the other end both sides of installation frame are all fixed and are equipped with the second fixed axle, are equipped with the arc notch that can make the second fixed axle pass on the outer storehouse body, and bar notch is worn out to first fixed axle and rotatable the installing in the frame through the pedestal bearing, and the arc notch is worn out to the second fixed axle and is located in the frame through the elastic support subassembly.

Furthermore, the elastic supporting assembly comprises an adjusting screw rod, a rotating block, a compression spring and a locking nut, a connecting block is fixedly arranged at one end of the adjusting screw rod and is rotatably connected with the second fixing shaft, the other end of the adjusting screw rod penetrates through a through hole in the rotating block and is in threaded connection with the locking nut, the rotating block is rotatably installed on the rack, and the compression spring is sleeved on the adjusting screw rod and is located between the connecting block and the rotating block.

Furthermore, the inner discharge hole of the inner bin body is arranged above the outer discharge hole of the outer bin body, and the caliber of the outer discharge hole is larger than that of the inner discharge hole.

Furthermore, the receiving hopper body includes bottom plate, left side board, right side board and posterior lateral plate, and bottom plate, left side board, right side board and posterior lateral plate surround and are formed with the receiving chamber, and the receiving intracavity is fixed to be equipped with a plurality of reinforcing plates.

Furthermore, a plurality of strip-shaped material accumulating plates which are obliquely arranged upwards are fixedly arranged on the inner wall of the inner bin body.

From the above description, the asphalt reclaimed material crushing and screening production line provided by the utility model has the advantages of novel overall structure, practicability and reliability, and has the following beneficial effects:

1. when the asphalt reclaimed material crushing and screening production line works, raw materials can be fed into the proportioning bin through the loader and are conveyed into the first finished product screening device to be screened through the first conveying device and the second conveying device in sequence, so that the mixed materials are finely classified into different coarse and fine particle sizes, then a plurality of finished products screened out through the first finished product screening device are conveyed out through the respective fourth conveying devices and are piled, ultra-fine particle sizes which are screened out through the first finished product screening device and do not meet the requirements of customers enter the crushing device to be crushed, the materials crushed through the crushing device are conveyed out through the third conveying device, the asphalt reclaimed material crushing and screening production line is reasonable and flexible in overall layout, the requirements of crushing and screening of raw materials such as asphalt reclaimed materials can be effectively met, fine classification of aggregates into different coarse and fine particle sizes can be well realized, and classified piling of the finished products is facilitated, meanwhile, the situation that the crushing space of the crushing equipment is occupied due to the fact that raw materials which do not need to be crushed enter the crushing equipment can be avoided, the overall treatment capacity of the asphalt reclaimed material crushing and screening production line is effectively guaranteed, the reliability of aggregate particle size grading is improved, and the aggregate is guaranteed to be efficiently utilized;

2. through the arrangement of the grid sieve, when the loader is loaded, materials firstly impact the grid sieve, so that the inner bin body is prevented from being greatly impacted, the materials can be screened and dispersed, the materials are gradually fallen into the inner bin body through screening of the grid sieve, and the materials are effectively prevented from directly falling into the inner bin body and the outer bin body and being heavily pressed on the first conveying equipment after the loader is loaded;

3. through the arrangement of the receiving hopper body, coarse materials sliding down along the surface of the grate screen can firstly fall into the receiving cavity of the receiving hopper body, and are piled in the receiving cavity, after the materials are piled to a certain degree, the materials slide down along the inclined surface of the piled materials and fall into the inner bin body from the blanking port, a certain protection effect can be achieved on the bin wall of the outer bin body, and the coarse materials sliding down along the surface of the grate screen can be ensured to better fall to the middle position of the inner bin body;

4. through the setting of the internal storehouse, after the loader material loading, the material gets into the external storehouse through the internal storehouse and internal and pile up on first conveying equipment, slowly upwards pile up when the material, can make most material pile up internal at the internal storehouse, thereby make internal storehouse physical stamina bear the weight that comes from most material, the heavy pressure of the material of effectively avoiding in the proportioning bins is on first conveying equipment, can effectively alleviate transport load and the weight load that leads to the fact first conveying equipment, make the material of first conveying equipment in can more smooth and easy going out the proportioning bins, effectively prevent the putty problem from appearing.

Drawings

Fig. 1 is a schematic structural diagram of an asphalt reclaimed material crushing and screening production line in a first embodiment of the utility model.

Fig. 2 is a schematic perspective view of the proportioning bin.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic view of the internal structure of the proportioning bin.

Fig. 5 is a schematic perspective view of a grid screen.

Fig. 6 is a schematic perspective view of a grate bar.

Fig. 7 is a schematic perspective view of the hopper body.

Fig. 8 is a schematic perspective view of a turning block.

Fig. 9 is a schematic structural diagram of a crushing and screening production line for asphalt reclaimed materials in a second embodiment of the utility model.

In the figure: 1-a proportioning bin; 11-a frame; 12-an outer bin body; 121-bar slot opening; 122-arc-shaped notch; 123-an outer material outlet; 13-an inner bin body; 131-strip material accumulating plates; 132-internal discharge hole; 14-a hopper body; 141-a receiving cavity; 142-a bottom plate; 143-left side plate; 144-right side plate; 145-rear side panel; 146-a reinforcement plate; 15-grid sifting; 151-mounting frame; 1511-a first fixed shaft; 1512-a second stationary shaft; 152-grate bars; 1521-top plate; 1522-rib plate; 1523-connecting plate; 1524-strip-shaped wear-resistant blocks; 153-strip-shaped sieve pores; 21-a first conveying device; 22-a second conveying device; 23-a third conveying device; 24-a fourth conveying device; 25-a fifth conveying device; 31-first product screening means; 32-second finished product screening equipment; 4-a crushing device; 5-blanking port; 6-an elastic support component; 61-adjusting screw; 611-connecting block; 62-a turning block; 621-a via hole; 63-a compression spring; 64-a locking nut; 7-bearing with seat.

Detailed Description

The utility model is further described below by means of specific embodiments.

Example one

As shown in fig. 1 to 8, the asphalt reclaimed material crushing and screening production line according to the present invention includes a batching bin 1, a first conveying device 21, a second conveying device 22, a first component screening device 31, a crushing device 4, a third conveying device 23 and a fourth conveying device 24, wherein a discharging end of the batching bin 1 is connected to a feeding end of the first conveying device 21, a discharging end of the first conveying device 21 is connected to a feeding end of the second conveying device 22, a discharging end of the second conveying device 22 is connected to a feeding end of the first component screening device 31, a plurality of layers of screens are installed on the first component screening device 31, a discharging end of a top screen of the first component screening device 31 is connected to a feeding end of the crushing device 4, a discharging end of the crushing device 4 is connected to a feeding end of the third conveying device 23, and discharging ends of the rest screens and bottom of the first component screening device 31 are respectively connected to corresponding discharging ends The feeding end of the fourth conveying device 24 is connected, the discharging end of the third conveying device 23 is connected with the feeding end of the first finished product screening device 31, the proportioning bin 1 comprises a frame 11, an outer bin body 12, an inner bin body 13, a hopper body 14 and a grate screen 15, the outer bin body 12 is fixedly arranged on the frame 11, the inner bin body 13 is fixedly arranged in the outer bin body 12, the grate screen 15 is arranged on one side in the outer bin body 12 and is positioned above the inner bin body 13, the hopper body 14 is arranged at the other side in the outer bin body 12 and is positioned between the inner bin body 13 and the grate screen 15, the grate screen 15 is arranged downwards and obliquely towards one side of the receiving hopper body 14, a receiving cavity 141 which is upwards opened towards one side of the grate screen 15 is arranged in the receiving hopper body 14, and a blanking port 5 is formed between the grate screen 15 and the receiving hopper body 14.

Specifically, the crushing device 4 is a toothed roll crusher, which can well process raw materials of asphalt reclaimed materials, the first finished product screening device 31 is a horizontal screening device or an inclined screening device, the number of screen layers of the first finished product screening device 31 is 2-3, in actual work, the first finished product screening device 31 with the corresponding number of screen layers can be selected according to actual requirements of customers on finished products, and the first conveying device 21, the second conveying device 22, the third conveying device 23 and the fourth conveying device 24 can all adopt belt conveyors.

During operation, raw materials can be loaded into the proportioning bin 1 through a loader and are sequentially conveyed into the first finished product screening device 31 through the first conveying device 21 and the second conveying device 22 to be screened, so that the mixed materials are finely classified according to different thicknesses and particle sizes, then, various finished products screened out through the first finished product screening device 31 are conveyed out through the respective fourth conveying device 24 and are stacked, oversize materials which do not meet customer requirements and are screened out through the first finished product screening device 31 enter the crushing device 4 to be crushed, materials crushed through the crushing device 4 are conveyed into the first finished product screening device 31 through the third conveying device 23 to be screened, and therefore a closed loop is formed on the asphalt reclaimed material crushing and screening production line, this pitch reclaimed material crushing and screening production line overall layout is reasonable, nimble, can effectively deal with the crushing and screening needs of raw and other materials such as pitch reclaimed material, and the meticulous classification of the different thickness particle diameters of realization aggregate that can be fine is convenient for the categorised pile of finished product material, can avoid simultaneously need not broken raw and other materials to get into in the crushing equipment 4 and occupy crushing space of crushing equipment 4 effectively ensures the holistic handling capacity of this pitch reclaimed material crushing and screening production line, improves the hierarchical reliability of aggregate particle diameter, guarantees that the aggregate obtains high-efficient utilization.

In addition, through the arrangement of the grid sieve 15, when the loader is used for feeding, materials firstly impact on the grid sieve 15, so that the inner bin body 13 is prevented from being greatly impacted, the materials can be screened and dispersed, the materials are enabled to gradually fall into the inner bin body 13 through screening of the grid sieve 15, and the materials are effectively prevented from directly falling into the inner bin body 13 and the outer bin body 12 and being repeatedly pressed on the first conveying equipment 21 after the loader is used for feeding; through the arrangement of the receiving hopper body 14, coarse materials sliding down along the surface of the grate screen 15 can firstly fall into the receiving cavity 141 of the receiving hopper body 14, and are stacked in the receiving cavity 141, when the stacking is carried out to a certain degree, the materials slide down along the inclined surface of the stacking and fall into the inner bin body 13 from the blanking port 5, so that the bin wall of the outer bin body 12 can be protected to a certain extent, and the coarse materials sliding down along the surface of the grate screen 15 can be ensured to better fall to the middle position of the inner bin body 13; through the setting of the inner bin body 13, after the loader is loaded, materials enter the outer bin body 12 through the inner bin body 13 and are stacked on the first conveying equipment 21, and when the materials are slowly stacked upwards, most of the materials can be stacked in the inner bin body 13, so that the inner bin body 13 can bear the weight of most of the materials, the heavy materials in the proportioning bin 1 are effectively prevented from being pressed on the first conveying equipment 21, the conveying load and the weight load caused by the first conveying equipment 21 can be effectively reduced, the first conveying equipment 21 can more smoothly convey the materials in the proportioning bin 1, and the problem of material blockage is effectively prevented.

As shown in fig. 5 and 6, specifically, the grid screen 15 includes a mounting frame 151 and a plurality of grid bars 152, the grid bars 152 are uniformly arranged at intervals along the length direction of the mounting frame 151 and are fixedly mounted on the mounting frame 151, a strip-shaped screen hole 153 is formed between two adjacent grid bars 152, each grid bar 152 includes a top plate 1521 and a rib plate 1522, the rib plate 1522 is fixedly disposed on the lower end surface of the top plate 1521, the lower end of the rib plate 1522 is fixedly provided with a plurality of connecting plates 1523 fixedly connected to the mounting frame 151, by adopting this structure, the overall structure of the grid screen 15 has good strength, and can well bear the impact of the material when the material is loaded from the loader, and in addition, because the grid screen 15 is in normal operation, under normal conditions, the middle part of the grid screen 15 can be impacted by more materials, and the abrasion speed is fastest, the grate bars 152 are of a block type structure, so that the grate bars 152 which are located in the middle and are worn quickly can be replaced independently, and the grate bars 152 which are located on two sides and are worn slowly do not need to be replaced, so that the subsequent maintenance cost can be saved, and the maintenance and replacement time can be reduced.

As shown in fig. 5 and 6, preferably, the top plate 1521 is in a shape of a Chinese character 'ba' and the width of the bar-shaped screen hole 153 is gradually increased along the advancing direction of the material, by adopting this structure, when the loader feeds the material onto the grid screen 15, the raw material can be gradually screened from fine material with a small particle size to a large particle size during the process of moving obliquely downwards along the grid screen 15, thereby better enabling the raw material to gradually fall into the inner bin body 13 through the screening of the grid screen 15.

In addition, the upper end face of the top plate 1521 is fixedly provided with at least one strip-shaped wear-resistant block 1524, preferably, the number of the strip-shaped wear-resistant blocks 1524 is 2, the wear resistance of the top plate 1521 can be effectively improved through the arrangement of the strip-shaped wear-resistant blocks 1524, and after the strip-shaped wear-resistant blocks 1524 are worn, new strip-shaped wear-resistant blocks 1524 can be welded again, so that the top plate 1521 is continuously protected, the service life of the top plate 1521 is greatly prolonged, the replacement frequency of the grate bars 152 is reduced, and the subsequent maintenance cost is reduced.

As shown in fig. 2, 3 and 5, in addition, two sides of one end of the mounting frame 151 are fixedly provided with a first fixing shaft 1511, the outer bin 12 is provided with a strip-shaped notch 121 through which the first fixing shaft 1511 can pass, two sides of the other end of the mounting frame 151 are fixedly provided with a second fixing shaft 1512, the outer bin 12 is provided with an arc-shaped notch 122 through which the second fixing shaft 1512 can pass, the first fixing shaft 1511 passes through the strip-shaped notch 121 and is rotatably mounted on the frame 11 through a bearing with a seat 7, the second fixing shaft 1512 passes through the arc-shaped notch 122 and is disposed on the frame 11 through an elastic support assembly 6, specifically, the elastic support assembly 6 includes an adjusting screw 61, a rotating block 62, a compression spring 63 and a locking nut 64, one end of the adjusting screw 61 is fixedly provided with a connecting block 611, and the connecting block 611 is rotatably connected with the second fixing shaft 1512, the other end of the adjusting screw 61 passes through a through hole 621 in the rotating block 62 and is in threaded connection with the locking nut 64, the rotating block 62 is rotatably mounted on the frame 11, the compression spring 63 is sleeved on the adjusting screw 61 and is located between the connecting block 611 and the rotating block 62, and the adjusting screw 61 can stably support the grate screen 15 by using the compression spring 63 and the locking nut 64 in a matching manner, when a loader feeds materials onto the grate screen 15, the overall weight of the grate screen 15 is increased, so that the compression spring 63 is compressed, and the front end of the grate screen 15 is turned downwards, at this time, the rotating block 62 can adaptively rotate, so as to ensure the smooth turning of the grate screen 15, and in this process, the compression spring 63 can play a good buffering role, it is right when effectively avoiding the loader material loading batching storehouse 1 causes great impact, makes batching storehouse 1's overall structure is more stable, in addition, through the adjustment lock nut 64 is in adjusting screw 61 is last, thereby is convenient for adjust the holistic inclination of grid screen 15 to better adaptation different use operating modes.

As shown in fig. 4, in addition, the inner discharge hole 132 of the inner bin 13 is disposed above the outer discharge hole 123 of the outer bin 12, and the caliber of the outer discharge hole 123 is larger than the caliber of the inner discharge hole 132, so that when the material in the inner bin 13 falls into the outer bin 12 from the inner discharge hole 132, the material can more smoothly fall onto the first conveying device 21 from the outer discharge hole 123.

As shown in fig. 7, specifically, the hopper body 14 includes a bottom plate 142, a left side plate 143, a right side plate 144, and a rear side plate 145, the bottom plate 142, the left side plate 143, the right side plate 144, and the rear side plate 145 surround to form the hopper cavity 141, a plurality of reinforcing plates 146 are fixed in the hopper cavity 141, preferably, the number of the reinforcing plates 146 is 2 to 3, and the reinforcing plates 146 are arranged, so that the overall structure of the hopper can be further reinforced.

As shown in fig. 2 and 4, in addition, a plurality of strip-shaped material-accumulating plates 131 which are obliquely arranged upwards are fixedly arranged on the inner wall of the inner bin body 13, and thus strip-shaped material-accumulating grooves are formed between the strip-shaped material-accumulating plates 131 and the inner wall of the inner bin body 13, so that a layer of material is accumulated on the surface of the inner wall of the inner bin body 13 and a protective layer is formed, which can protect the inner bin body 13 well and effectively prolong the service life of the inner bin body 13.

Example two

As shown in fig. 9, the present embodiment is different from the first embodiment in that: the discharge end of third conveying equipment 23 meets with the feed end of second finished product screening equipment 32, install the multilayer screen cloth on the second finished product screening equipment 32, each layer screen cloth discharge end and the bottom discharge end of second finished product screening equipment 32 are equallyd divide and are connected with the feed end of corresponding fifth conveying equipment 25 respectively, second finished product screening equipment 32 is horizontal screening equipment or tilting screening equipment, the screen cloth number of layers of second finished product screening equipment 32 is 2-3 layers, in actual work, can select the second finished product screening equipment 32 of corresponding screen cloth number of layers according to the actual demand of customer to finished product material, the optional belt conveyor of fifth conveying equipment 25, during operation, process the material after 4 crushings of crushing equipment will pass through the transport of third conveying equipment 23 gets into sieve in the second finished product screening equipment 32, therefore, the mixed materials crushed by the crushing device 4 are finely classified according to different thicknesses and sizes, and then the multiple finished products screened by the second finished product screening device 32 are conveyed out through the respective fifth conveying devices 25 and piled up, so that the screening load of the first finished product screening device 31 can be greatly reduced, the overall screening efficiency of the asphalt reclaimed material crushing and screening production line is effectively improved, and the overall treatment capacity is further improved.

Other technical features are the same as those of the first embodiment.

The above description is only a few specific embodiments of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by the design concept should fall within the scope of the present invention.

Claims (10)

1. The utility model provides an asphalt reclaimed material crushing and screening production line which characterized in that: the material mixing device comprises a material mixing bin, a first conveying device, a second conveying device, a first component screening device, a crushing device, a third conveying device and a fourth conveying device, wherein a discharge end of the material mixing bin is connected with a feed end of the first conveying device, a discharge end of the first conveying device is connected with a feed end of the second conveying device, a discharge end of the second conveying device is connected with a feed end of the first component screening device, a plurality of layers of screens are mounted on the first component screening device, a discharge end of a top screen of the first component screening device is connected with a feed end of the crushing device, a discharge end of the crushing device is connected with a feed end of the third conveying device, the discharge ends of the other screens and the bottom discharge end of the first component screening device are connected with corresponding feed ends of the fourth conveying device respectively, and the material mixing bin comprises a rack, The outer bin body is fixedly installed on the rack, the inner bin body is fixedly installed in the outer bin body, the grate screen is arranged on one side in the outer bin body and located above the inner bin body, the receiving bin body is arranged on the other side in the outer bin body and located between the inner bin body and the grate screen, the grate screen is arranged downwards and obliquely towards one side of the receiving bin body, a receiving cavity which is upwards and is open towards one side of the grate screen is arranged in the receiving bin body, and a blanking port is formed between the grate screen and the receiving bin body.

2. The asphalt recycling material crushing and screening production line according to claim 1, characterized in that: and the discharge end of the third conveying equipment is connected with the feed end of the first finished product screening equipment.

3. The asphalt recycling material crushing and screening production line according to claim 1, characterized in that: the discharge end of the third conveying equipment is connected with the feed end of the second finished product screening equipment, multiple layers of screens are installed on the second finished product screening equipment, and the discharge ends of the screens and the discharge end at the bottom of each layer of the second finished product screening equipment are connected with the feed end of the corresponding fifth conveying equipment respectively.

4. The asphalt recycling material crushing and screening production line according to claim 1, characterized in that: the grid section sieve comprises a plurality of grid sections and is uniformly arranged at intervals along the length direction of the installation frame and fixedly installed on the installation frame, a strip-shaped sieve mesh is formed between every two adjacent grid sections, each grid section comprises a top plate and a rib plate, the rib plates are fixedly arranged on the lower end face of the top plate, and a plurality of connecting plates fixedly connected with the installation frame are fixedly arranged at the lower ends of the rib plates.

5. The asphalt recycling material crushing and screening production line according to claim 4, characterized in that: the top plate is splayed, the width of the strip-shaped sieve holes is gradually increased along the advancing direction of the materials, and at least one strip-shaped wear-resistant block is fixedly arranged on the upper end face of the top plate.

6. The asphalt recycling material crushing and screening production line according to claim 4, characterized in that: the one end both sides of installation frame are all fixed and are equipped with first fixed axle, be equipped with on the outer storehouse body and make the bar notch that first fixed axle passed, the other end both sides of installation frame are all fixed and are equipped with the second fixed axle, be equipped with on the outer storehouse body and make the arc notch that the second fixed axle passed, first fixed axle is worn out the bar notch is rotatable install in through the pedestal bearing in the frame, the second fixed axle is worn out the arc notch is located through the elastic support subassembly in the frame.

7. The asphalt recycling material crushing and screening production line according to claim 6, characterized in that: the elastic support assembly comprises an adjusting screw rod, a rotating block, a compression spring and a locking nut, a connecting block is fixedly arranged at one end of the adjusting screw rod, the connecting block is rotatably connected with the second fixing shaft, the other end of the adjusting screw rod penetrates through a through hole in the rotating block and is in threaded connection with the locking nut, the rotating block is rotatably arranged on the rack, and the compression spring is sleeved on the adjusting screw rod and is located between the connecting block and the rotating block.

8. The asphalt recycling material crushing and screening production line according to claim 1, characterized in that: the inner discharge hole of the inner bin body is arranged above the outer discharge hole of the outer bin body, and the caliber of the outer discharge hole is larger than that of the inner discharge hole.

9. The asphalt recycling material crushing and screening production line according to claim 1, characterized in that: the receiving hopper body comprises a bottom plate, a left side plate, a right side plate and a rear side plate, the bottom plate, the left side plate, the right side plate and the rear side plate are encircled to form the receiving cavity, and a plurality of reinforcing plates are fixedly arranged in the receiving cavity.

10. The asphalt recycling material crushing and screening production line according to claim 1, characterized in that: and a plurality of strip-shaped material accumulating plates which are obliquely arranged upwards are fixedly arranged on the inner wall of the inner bin body.

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