An intelligent asphalt mixing station

Abstract

The present invention discloses an intelligent asphalt mixing station, comprising transverse grids and longitudinal partitions, wherein the gaps formed between the transverse grids are screening zones, and the gaps formed between the longitudinal partitions are material discharge zones, and the sieve holes of the transverse grids decrease in sequence from top to bottom, and a first detection device and a first dredging device are arranged at the position of a material discharge port in the material discharge port, the first detection device is electrically connected to the first dredging device, a second detection device is arranged in the screening zone, and a second dredging device is arranged on an aggregate screening bin, the second detection device is electrically connected to the second dredging device. The present invention efficiently saves labor costs, avoids the trouble of manual detection and manual cleaning, greatly improves production efficiency, and also reduces safety risks, and can also perform blockage detection and dredging control on the overall material discharge port of the aggregate screening bin, thereby improving the material discharge quality of the aggregate screening bin.

Description

Technical Field

[0001] The present invention relates to the technical field of asphalt production, and in particular to an intelligent asphalt mixing station. Background Art

[0002] Asphalt mixing plant, also known as asphalt concrete mixing plant, can produce asphalt mixture, modified asphalt mixture, colored asphalt mixture, which can fully meet the needs of building expressways, grade highways, municipal roads, airports, ports, etc. When the asphalt mixing plant is in production, hot aggregate, powder and asphalt need to be measured according to a certain ratio, and then mixed to produce the finished product.

[0003] At present, aggregate feeding is usually carried out using a vibrating screen. Aggregates of different sizes are screened into different silos through the vibration of the vibrating screen to form a variety of gradations. After that, the aggregates of various gradations are mixed and fed according to actual needs.

[0004] However, during the feeding process, aggregate blockage often occurs at the feeding port of the vibrating screen and between the upper and lower screens, delaying the production process and reducing production efficiency. If blockage occurs between the screens, aggregates of different grades will be incorrectly partitioned, affecting the mix quality and, in turn, the quality of the asphalt mixture.

[0005] The more traditional method to solve this problem is to manually observe the discharge port, and if the discharge port does not discharge material, manually dismantle it and then manually clean it. However, this method is time-consuming and labor-intensive, consumes human resources, has low work efficiency, and has certain safety hazards, which is not conducive to safe production. Summary of the invention

[0006] The purpose of the present invention is to provide an intelligent asphalt mixing station to solve the technical problems in the prior art, such as the presence of certain safety hazards and low efficiency due to manual cleaning of vibrating screen blockage.

[0007] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0008] An asphalt intelligent mixing station, comprising a transverse grid and a longitudinal partition, wherein the transverse grid and the longitudinal partition are connected to form an L-shaped vibrating screen arranged in an aggregate screening bin of the asphalt mixing station, wherein a plurality of the L-shaped vibrating screens are arranged in the aggregate screening bin, and the plurality of the L-shaped vibrating screens are stacked in the aggregate screening bin, and there is a gap between two adjacent L-shaped vibrating screens;

[0009] The gaps formed between the transverse grids are screening areas, the gaps formed between the longitudinal partitions are material feeding areas, and the meshes of the transverse grids decrease from top to bottom to form aggregates of different grades in the material feeding area, characterized in that:

[0010] A first detection device for detecting the blockage of the material discharge port and a first unblocking device for unblocking the material discharge port are arranged at the position of the material discharge port in the material discharge area. The first detection device is electrically connected to the first unblocking device. The first detection device transmits a blockage signal of the material discharge port to the first unblocking device to drive the first unblocking device to unblock the material discharge port.

[0011] A second detection device for detecting blockage in the screening area is arranged in the screening area, and a second dredging device is arranged on the aggregate screening bin. The second detection device is electrically connected to the second dredging device. The second detection device drives the second dredging device to dredge the screening area by transmitting a blockage signal of the screening area to the second dredging device.

[0012] As a preferred solution of the present invention, the first detection device comprises an automatic telescopic pull valve, a counterweight, a connecting harness and a detection main disk, the automatic telescopic pull valve and the counterweight are respectively arranged on the outer walls of both sides of the aggregate screening bin, the detection main disk is arranged in the unloading area, the connecting harness penetrates the outer wall of the aggregate screening bin and the plurality of the longitudinal partitions to connect the plurality of the detection main disks in the unloading area in series to form a whole, and the two ends of the connecting harness are respectively connected to the automatic telescopic pull valve and the counterweight;

[0013] The automatic telescopic pull valve drives the detection main disk to move repeatedly in the material discharge area through repeated expansion and contraction of the working end to detect the material blockage in the material discharge area.

[0014] As a preferred solution of the present invention, a proximity sensor is further provided on the outer wall of the aggregate screening bin close to the counterweight, and the proximity sensor is arranged in the direction of the counterweight. The proximity sensor determines whether to transmit a material blockage signal by monitoring the length of time that the counterweight is shielded in front of the proximity sensor, and the proximity sensor also determines whether to transmit a material blockage signal by monitoring the length of time that the counterweight is not shielded in front of the proximity sensor.

[0015] As a preferred solution of the present invention, the first dredging device comprises a plurality of material taking bins installed on the aggregate screening bin, the plurality of material taking bins are respectively arranged corresponding to the material discharge area in the aggregate screening bin, and the material taking bins are connected to the material discharge area, a spiral auger is installed in the material taking bin, and a rotating driver is connected to one end of the spiral auger away from the material discharge area;

[0016] A material leakage port is also provided at the bottom of the material bin, and a material receiving platform is provided below the material leakage port. The rotary driver drives the spiral auger to spirally enter the material discharge area to bring the blocked aggregate back into the material bin, and the aggregate falls into the material receiving platform through the material leakage port.

[0017] As a preferred solution of the present invention, the proximity sensor is electrically connected to the rotary driver, and the rotary driver receives the material blocking signal sent by the proximity sensor to drive the spiral auger to move.

[0018] As a preferred solution of the present invention, the second detection device is an intelligent material level meter, the working end of the intelligent material level meter penetrates the wall of the aggregate screening bin and extends into the screening area, and the intelligent material level meter detects the blockage in the screening area by rotating or telescopic movement of the working end in the screening area.

[0019] As a preferred solution of the present invention, the longitudinal partition includes a partition section and a transition section, a material discharge area is formed between two adjacent partition sections, the transition section is arc-shaped as a whole, one end of the transition section is fixedly connected to the partition section, and the other end is connected to the transverse grid, wherein two opposite sides of the transverse grid are respectively slidably connected to the transition section and the inner wall of the aggregate screening bin.

[0020] As a preferred solution of the present invention, there is a moving gap between the other two side edges of the transverse grid and the inner wall of the aggregate screening bin for the movement of the transverse grid, and an anti-leakage inclined plate is arranged on the moving gap, one side of the anti-leakage inclined plate is arranged on the inner wall of the aggregate screening bin, and the other side extends downward and is located above the edge of the transverse grid. The anti-leakage inclined plate can be located directly above the transverse grid during the movement of the transverse grid to prevent aggregate from falling from the moving gap.

[0021] As a preferred solution of the present invention, the second dredging device includes a plurality of telescopic actuators arranged on the outer side wall of the aggregate screening bin, the telescopic actuators are arranged on the outer side wall adjacent to the automatic telescopic pull valve, the working ends of the plurality of telescopic actuators all penetrate the bin wall of the aggregate screening bin and are connected to the side edges of the transverse grid one by one, the telescopic actuators are electrically connected to the intelligent material level meter, and the telescopic actuators drive the transverse grid to move to dredge the blockage by receiving the blockage signal of the intelligent material level meter.

[0022] As a preferred solution of the present invention, the telescopic drive drives the adjacent transverse grids to move in opposite directions.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention is provided with a first detection device, a first dredging device, a second detection device, and a second dredging device in the aggregate screening bin, so as to automatically detect and clean the blockage of the aggregate falling in the aggregate screening bin, which effectively saves the labor cost, avoids the trouble of manual detection and manual cleaning, greatly improves the production efficiency, and also reduces the safety risk;

[0025] On the other hand, by respectively arranging the first detection device, the first dredging device and the second detection device and the second dredging device in the discharge area and the screening area, not only can the blockage detection and dredging control be performed on the entire discharge port of the aggregate screening bin, thereby ensuring the discharge efficiency, but also the problem of incorrect aggregate proportioning due to blockage in the screening area can be avoided, thereby improving the discharge quality of the aggregate screening bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0027] Figure 1 It is a schematic diagram of the overall front cutaway structure of the present invention;

[0028] Figure 2 For the present invention Figure 1 An enlarged view of the first detection device;

[0029] Figure 3 It is a schematic diagram of the overall structure of the first dredging device of the present invention;

[0030] Figure 4 It is a schematic diagram of the side cutaway structure of the aggregate screening bin of the present invention;

[0031] Figure 5 It is a schematic diagram of the internal structure of the aggregate screening bin in the present invention.

[0032] The numbers in the figure represent the following:

[0033] 1. Horizontal grid; 2. Longitudinal partition; 3. L-shaped vibrating screen; 4. Aggregate screening bin; 5. Screening area; 6. Discharging area; 7. Discharging port; 8. First detection device; 9. First dredging device; 10. Second detection device; 11. Second dredging device; 12. Automatic telescopic pull valve; 13. Counterweight; 14. Connecting harness; 15. Detection main disk; 16. Proximity sensor; 17. Feed bin; 18. Screw auger; 19. Rotating drive; 20. Leakage port; 21. Receiving platform; 22. Partition section; 23. Transition section; 24. Moving gap; 25. Anti-leakage inclined plate; 26. Telescopic drive. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figures 1 to 5 As shown, the present invention provides an intelligent asphalt mixing station. The asphalt mixing station includes multiple systems, such as a feeding system, a material distribution system, a stirring system, a material receiving system, and the like. Among them, the system for screening the piled material is a material distribution system. The material distribution system is provided with a feed port at the top, and a vibrating screen is provided inside, and the vibrating screen is composed of multiple stages, that is, multiple screens are stacked up and down, and the screen holes of the stacked screens decrease from top to bottom. When the piled aggregates (including aggregates of various diameters and sizes) enter the vibrating screen from the feed port, the aggregates are screened into aggregates of various different gradations (with the size of the aggregates as the grading standard) through the multi-stage screens for independent storage (aggregates of different specifications are stored separately in different material discharge areas), and then when the materials are fed to the mixing drum for mixing, they are discharged according to the different pre-set material discharge values ​​for the aggregates of different gradations, and then finally formed into high-quality finished asphalt through mixing and other processes.

[0036] However, the above-mentioned vibrating screen often has material blocking during actual use. The material blocking phenomenon often occurs at the position of the material discharge port 7 of the material discharge area 6. This position is at the bottom of the aggregate screening bin 4, and the opening is small, which is easy to be blocked during material discharge, thereby delaying the work progress and affecting the work efficiency.

[0037] In addition, material blockage may also occur between two adjacent layers of the vibrating screen. There are two main reasons for this kind of material blockage. First, due to the structural characteristics of the screen itself, larger aggregates will block the mesh of the smaller screen. When multiple meshes are blocked at the same time, a chain reaction will be triggered, resulting in a large area of ​​the mesh being blocked, thus causing material blockage. Second, due to the limited volume of the discharge area 6 of the vibrating screen, when the aggregate in the discharge area 6 is filled and the feed port is still discharging, the aggregate will overflow and overflow between the two layers of the screen, thus forming a material blockage.

[0038] The blockage formed between the screens not only delays work efficiency, but also prevents small-diameter aggregates that should have fallen from falling, and thus enters the unmatched discharge area 6, resulting in inaccurate aggregate screening. When the finished asphalt is subsequently discharged and stirred according to the preset value to form the finished asphalt, the quality of the finished asphalt will be reduced, and even waste will occur.

[0039] For the above problems, the more traditional method is usually to deal with the blockage in the aggregate screening bin 4 by manual observation and manual cleaning. However, this method is time-consuming and labor-intensive, and there are safety risks.

[0040] Therefore, the present invention provides an asphalt intelligent mixing station, comprising a transverse grid 1 and a longitudinal partition 2, wherein the transverse grid 1 and the longitudinal partition 2 are connected to form an L-shaped vibrating screen 3 arranged in an aggregate screening bin 4 of the asphalt mixing station, wherein a plurality of L-shaped vibrating screens 3 are arranged in the aggregate screening bin 4, wherein the plurality of L-shaped vibrating screens 3 are stacked in the aggregate screening bin 4, and there is a gap between two adjacent L-shaped vibrating screens 3.

[0041] Among them, the gap formed between the transverse grids 1 is the screening area 5, the gap formed between the longitudinal partitions 2 is the feeding area 6, and the sieve holes of the transverse grids 1 decrease from top to bottom to form aggregates of different grades in the feeding area 6.

[0042] In addition, the longitudinal partition 2 includes a partition section 22 and a transition section 23, and a material discharge area 6 is formed between two adjacent partition sections 22. The transition section 23 is arc-shaped as a whole, and one end of the transition section 23 is fixedly connected to the partition section 22, and the other end is connected to the transverse grid 1, wherein the two opposite sides of the transverse grid 1 are respectively slidably connected to the transition section 23 and the inner wall of the aggregate screening bin 4.

[0043] In the present device, after the blockage is screened by the transverse grid 1, it slides down through the transition section 23 of the longitudinal partition 2 and falls into the material discharge area 6 between the partition sections 22 for temporary storage. This process is to screen aggregates of different sizes to form aggregates of different grades and store them in the material discharge area 6. The material discharge port 7 of the material discharge area 6 and between two adjacent layers of transverse grids 1 are prone to blockage. The present invention mainly detects and clears these two positions.

[0044] A first detection device 8 for detecting the blockage of the material discharge port 7 and a first unblocking device 9 for unblocking the material discharge port 7 are arranged at the position of the material discharge port 7 of the material discharge area 6. The first detection device 8 is electrically connected to the first unblocking device 9. The first detection device 8 transmits a blockage signal of the material discharge port 7 to the first unblocking device 9 to drive the first unblocking device 9 to unblock the material discharge port 7.

[0045] A second detection device 10 for detecting blockage in the screening area 5 is arranged in the screening area 5, and a second dredging device 11 is arranged on the aggregate screening bin 4. The second detection device 10 is electrically connected to the second dredging device 11. The second detection device 10 transmits a blockage signal of the screening area 5 to the second dredging device 11 to drive the second dredging device 11 to dredge the screening area 5.

[0046] This device detects the blockage in the material discharge area 6 by setting a first detection device 8 and a first unblocking device 9 in the material discharge area, and the first detection device 8 and the first unblocking device 9 are electrically connected. When the first detection device 8 detects that there is blockage at the material discharge port 7, it will send a signal to the first unblocking device 8 to unblock the blockage. The same is true for the screening area 5. The unblocking condition of the screening area 5 is guaranteed by setting a second detection device 10 and a second unblocking device 11 that are electrically connected to each other. In addition, this device does not require manual operation throughout the process, and performs automated processing through intelligent settings, eliminating the trouble of manual operation and reducing the risk of manual operation.

[0047] Among them, some of the components contained in the first detection device 8, the first dredging device 9, the second detection device 10, and the second dredging device 11 need to be arranged outside the aggregate screening bin 4, and installation thereof requires the use of mounting frames, support frames and other equipment. The fixed installation of these equipment depends on the conditions on site. They can be installed on the outer wall of the aggregate screening bin 4, or a separate support frame can be arranged and installed on the ground. In short, the integrity of their functions needs to be guaranteed.

[0048] Among them, the first detection device 8 includes an automatic telescopic pull valve 12, a counterweight 13, a connecting harness 14 and a detection main disk 15. The automatic telescopic pull valve 12 and the counterweight 13 are respectively arranged on the outer walls of both sides of the aggregate screening bin 4, and the detection main disk 15 is arranged in the unloading area 6. The connecting harness 14 penetrates the outer wall of the aggregate screening bin 4 and multiple longitudinal partitions 2 to connect multiple detection main disks 15 located in the unloading area 6 in series to form a whole, and the two ends of the connecting harness 14 are respectively connected to the automatic telescopic pull valve 12 and the counterweight 13.

[0049] The automatic telescopic pull valve 12 drives the detection main disk 15 to move repeatedly in the material discharge area 6 through repeated expansion and contraction of the working end to detect the material blockage in the material discharge area 6.

[0050] The first detection device 8 drives the connection harness 14 to be pulled horizontally by the movement of the externally arranged automatic telescopic pull valve 12 (its working end repeatedly telescopes along the extension direction of the connection harness 14), thereby driving the detection main disk 15 located on the connection harness 14 to move in the discharge port 7, wherein the detection main disk 15 is fixedly mounted on the connection harness 14, and the fixed mounting method can be achieved by adhesive connection or rope knot limit, in short, the detection main disk 15 can move in the discharge area 6 with the movement of the connection harness 14. Under normal working conditions, the detection main disk 15 can move back and forth at the discharge port 7, and the automatic telescopic pull valve 12 is in a normal working state at this time. However, when the discharge port 7 is blocked, the detection main disk 15 cannot move, thereby triggering the automatic telescopic pull valve 12 to send a blocking signal.

[0051] There are many ways to trigger the automatic telescopic pull valve 12 to send out a blocking signal. For example, an alarm program can be set in the automatic telescopic pull valve 12. When the normal reciprocating operation stops, the alarm program can send out a blocking signal. In this device, a counterweight 13 and a proximity sensor 16 are provided to achieve this purpose.

[0052] The counterweight 13 is at the other end of the connecting harness 14. It keeps the connecting harness 14 in a taut state through its own downward gravity, which is conducive to the effective use of the device. And the counterweight 13 itself has a certain volume, and it is set in front of the proximity sensor 16. Because under normal working conditions, the counterweight 13 will move up and down regularly with the pulling of the connecting harness 14, and sometimes it will be blocked in front of the proximity sensor 16 or away from the proximity sensor 16. However, whether it is blocked or away, it moves regularly under the action of the automatic telescopic pull valve 12. However, when there is a blockage, the counterweight 13 will stop moving and be fixed in one position. By setting a program in the proximity sensor 16, when the counterweight 13 is not moving, whether it stays in front of the proximity sensor 16 or away from the proximity sensor 16, as long as it exceeds a certain time, it will trigger the proximity sensor 16 to send a blocking signal, so as to detect the blocking situation at the feeding port 7.

[0053] Furthermore, since the aggregates in each unloading area 6 are of different sizes and are distributed from large to small, Figure 1As shown, in the specific setting, the automatic telescopic pull valve 12 can be firmly installed on the side close to the coarse aggregate, and the counterweight 13 can be set on the side close to the fine aggregate, so that when the aggregate falls, the fine aggregate can easily pass through the connecting wire harness 14, and will not press the connecting wire harness 14 and affect the movement of the counterweight 13. When the coarse aggregate falls, even if it presses the connecting wire harness 14, the pressure received by the connecting wire harness 14 will be dissipated because the automatic telescopic pull valve 12 is very close to the coarse aggregate unloading area 6. At the same time, the first detection device 8 can be set at a higher position to reduce the height difference from the aggregate to the connecting wire harness 14 to reduce the pressure.

[0054] The detection main plate 15 may be provided with a hard sheet, with its side (i.e. thickness direction) facing upward along the falling direction of the aggregate, and its front area being perpendicular to the falling direction of the aggregate, so as to detect the blockage when moving. The detection main plate 15 does not need to be set too large, but it is better to be hard and not easy to bend. The diameter of the connecting harness 14 is also selected to be thinner, and the end connected to the counterweight 13 is loaded through a redirecting pulley. The friction between the connecting harness 14 and the aggregate screening bin 4 is reduced to prevent it from breaking.

[0055] A proximity sensor 16 is also provided on the outer wall of the aggregate screening bin 4 near the counterweight 13. The proximity sensor 16 is arranged in the direction of the counterweight 13. The proximity sensor 16 determines whether to transmit a material blocking signal by monitoring the length of time that the counterweight 13 is shielded in front of the proximity sensor 16. The proximity sensor 16 also determines whether to transmit a material blocking signal by monitoring the length of time that the counterweight 13 is not shielded in front of the proximity sensor 16.

[0056] One end of the connecting harness 14 close to the counterweight 13 is connected to the counterweight 13 by being loaded on a redirecting pulley.

[0057] After the first detection device detects the blockage in the material discharge area, the first unblocking device is used to unblock it. The first unblocking device 9 includes a plurality of material collection bins 17 installed on the aggregate screening bin 4. The plurality of material collection bins 17 are respectively arranged corresponding to the material discharge area 6 in the aggregate screening bin 4, and the material collection bins 17 are connected to the material discharge area 6. A spiral auger 18 is installed in the material collection bin 17. The end of the spiral auger 18 away from the material discharge area 6 is connected to a rotation driver 19.

[0058] A material leakage port 20 is also provided at the bottom of the material bin 17 , and a material receiving platform 21 is provided below the material leakage port 20 . The rotary driver 19 drives the spiral auger 18 to spirally enter the unloading area 6 to bring the blocked aggregate back into the material bin 17 , and the aggregate falls into the material receiving platform 21 through the material leakage port 20 .

[0059] like Figure 1 , Figure 4 and Figure 5As shown, the aggregate screening bin 4 includes a front surface, a side surface, and a top surface, wherein the top surface is provided with an automatic telescopic pull valve 12 and a counterweight 13 on the side surface to receive the external aggregate pile, which are used to detect the blockage of the material discharge area 6. The first dredging device 9 in this device is arranged at the front position of the aggregate screening bin 4. It includes a material taking bin 17, which is connected to the front bin wall of the aggregate screening bin 4 and penetrates the bin wall to communicate with the internal material discharge area 6. Then, a spiral auger 18 is arranged in the material taking bin 17, and the spiral auger 18 is driven by the rotating driver 19 to enter the material discharge area 6, and then the blocked material in the material discharge area is brought out into the material taking bin 17 by the rotation of the spiral auger 18, and then falls through the leakage port 20 to enter the receiving platform 21.

[0060] Among them, the rotary driver 19 drives the spiral auger 18 to move along the direction of the material bin 17 to enter the material discharge area 6, and it is also capable of driving the spiral auger 18 entering the material discharge area 6 to rotate. There are many ways to achieve these two functions, which are already mature in the prior art. For example, the tail end of the spiral auger 18 is connected to the material bin 17 by means of threaded engagement, and then when the rotary driver 19 drives the spiral auger 18 to rotate, due to the characteristics of the spiral engagement, the spiral auger 18 will move forward to enter the material pile, and will optionally take out the aggregate in the material pile. In actual use, if the end of the spiral auger 18 is set to a pointed head, it is easier to enter the pile.

[0061] The proximity sensor 16 is electrically connected to the rotary driver 19 , and the rotary driver 19 receives the material blocking signal sent by the proximity sensor 16 to drive the spiral auger 18 to move.

[0062] The second detection device 10 is an intelligent material level meter, the working end of which penetrates through the wall of the aggregate screening bin 4 and probes into the screening area 5. The intelligent material level meter detects the blockage in the screening area 5 by rotating or telescopic movement of the working end in the screening area 5.

[0063] The intelligent material level meter can be inserted into the screening area 5 through its working end, and continuously rotate or perform continuous telescopic movement in the screening area 5. When the screening area 5 is blocked, the working end of the intelligent material level meter can no longer continue to work, thereby detecting the blockage of the screening area 5.

[0064] There are multiple intelligent material level meters, which are respectively arranged in each screening area 5 to detect the material blockage situation of each screening area.

[0065] There is a moving gap 24 between the other two side edges of the transverse grid 1 and the inner wall of the aggregate screening bin 4 for the movement of the transverse grid 1. A leak-proof inclined plate 25 is arranged on the moving gap 24. One side of the leak-proof inclined plate 25 is arranged on the inner wall of the aggregate screening bin 4, and the other side extends downward and is located above the edge of the transverse grid 1. The leak-proof inclined plate 25 can be located directly above the transverse grid 1 during the movement of the transverse grid 1 to prevent aggregate from falling from the moving gap 24.

[0066] The second dredging device 11 includes a plurality of telescopic actuators 26 arranged on the outer side wall of the aggregate screening bin 4. The telescopic actuators 26 are arranged on the outer side wall adjacent to the automatic telescopic pull valve 12. The working ends of the plurality of telescopic actuators 26 all penetrate the bin wall of the aggregate screening bin 4 and are connected to the side edges of the transverse grid 1 one by one. The telescopic actuators 26 are electrically connected to the intelligent material level meter. The telescopic actuators 26 drive the transverse grid 1 to move to dredge the blockage by receiving the blockage signal of the intelligent material level meter.

[0067] After the second detection device 10 detects the blockage in the screening area 5, the signal is transmitted to the telescopic drive 26, and then the telescopic drive 26 pushes the transverse grid 1 to move laterally in the aggregate screening bin 4. Since there is a certain gap between the transverse grid 1 and the inner wall of the aggregate screening bin 4, space for lateral movement is reserved.

[0068] The telescopic drive 26 is arranged on the front or back side of the aggregate screening bin 4, and can be arranged on a different surface from the intelligent material level meter to prevent interference between the two.

[0069] The telescopic drive 26 drives the adjacent transverse grids 1 to move in opposite directions.

[0070] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. An intelligent asphalt mixing station, comprising a transverse grid (1) and a longitudinal partition (2), wherein the transverse grid (1) and the longitudinal partition (2) are connected to form an L-shaped vibrating screen (3) arranged in an aggregate screening bin (4) of the asphalt mixing station, wherein a plurality of the L-shaped vibrating screens (3) are arranged in the aggregate screening bin (4), and the plurality of the L-shaped vibrating screens (3) are stacked in the aggregate screening bin (4), and a gap exists between two adjacent L-shaped vibrating screens (3); in, The gaps formed between the transverse grids (1) are screening areas (5), the gaps formed between the longitudinal partitions (2) are material feeding areas (6), and the mesh sizes of the transverse grids (1) decrease from top to bottom to form aggregates of different grades in the material feeding area (6), characterized in that: A first detection device (8) for detecting the blockage of the material discharge port (7) and a first unblocking device (9) for unblocking the material discharge port (7) are arranged at the position of the material discharge port (7) of the material discharge area (6); the first detection device (8) is electrically connected to the first unblocking device (9); the first detection device (8) transmits a signal of blockage of the material discharge port (7) to the first unblocking device (9) to drive the first unblocking device (9) to unblock the material discharge port (7); A second detection device (10) for detecting a material blockage condition in the screening zone (5) is provided in the screening zone (5); a second unblocking device (11) is provided on the aggregate screening bin (4); the second detection device (10) is electrically connected to the second unblocking device (11); the second detection device (10) transmits a material blockage signal in the screening zone (5) to the second unblocking device (11) to drive the second unblocking device (11) to unblock the screening zone (5); The first detection device (8) comprises an automatic telescopic pull valve (12), a counterweight (13), a connecting harness (14) and a detection main disk (15); the automatic telescopic pull valve (12) and the counterweight (13) are respectively arranged on the outer walls of both sides of the aggregate screening bin (4); the detection main disk (15) is arranged in the unloading area (6); the connecting harness (14) penetrates the outer wall of the aggregate screening bin (4) and the plurality of longitudinal partitions (2) to connect the plurality of detection main disks (15) in the unloading area (6) in series to form a whole; and the two ends of the connecting harness (14) are respectively connected to the automatic telescopic pull valve (12) and the counterweight (13); The automatic telescopic pull valve (12) drives the detection main disk (15) to move repeatedly in the material discharge area (6) through repeated extension and retraction of the working end to detect the material blockage in the material discharge area (6); A proximity sensor (16) is also provided on the outer wall of the aggregate screening bin (4) on the side close to the counterweight (13). The proximity sensor (16) is arranged in the direction opposite to the counterweight (13). The proximity sensor (16) determines whether to transmit a material blocking signal by monitoring the length of time that the counterweight (13) is shielded in front of the proximity sensor (16). The proximity sensor (16) also determines whether to transmit a material blocking signal by monitoring the length of time that the counterweight (13) is not shielded in front of the proximity sensor (16). The first dredging device (9) comprises a plurality of material taking bins (17) installed on the aggregate screening bin (4), the plurality of material taking bins (17) being respectively arranged corresponding to the material discharge area (6) in the aggregate screening bin (4), and the material taking bins (17) being communicated with the material discharge area (6), a spiral auger (18) being installed in the material taking bin (17), and a rotating driver (19) being connected to one end of the spiral auger (18) away from driving the material discharge area (6); A material discharge port (20) is also provided at the bottom of the material collection bin (17), and a material receiving platform (21) is provided below the material discharge port (20). The rotary drive (19) drives the spiral auger (18) to spirally enter the material discharge area (6) to bring the blocked aggregate back into the material collection bin (17), and the aggregate falls into the material receiving platform (21) through the material discharge port (20); The proximity sensor (16) is electrically connected to the rotary driver (19), and the rotary driver (19) receives a material blocking signal sent by the proximity sensor (16) to drive the spiral auger (18) to move; The second detection device (10) is an intelligent material level meter, the working end of which penetrates through the wall of the aggregate screening bin (4) and penetrates into the screening area (5), and the intelligent material level meter detects the material blockage in the screening area (5) by rotating or telescopic movement of the working end in the screening area (5); The second dredging device (11) comprises a plurality of telescopic actuators (26) arranged on the outer side wall of the aggregate screening bin (4); the telescopic actuators (26) are arranged on the outer side wall adjacent to the automatic telescopic pull valve (12); the working ends of the plurality of telescopic actuators (26) all penetrate the bin wall of the aggregate screening bin (4) and are connected to the side edges of the transverse grid (1) one by one; the telescopic actuators (26) are electrically connected to the intelligent material level meter; and the telescopic actuators (26) drive the transverse grid (1) to move to dredge the blockage by receiving a material blockage signal from the intelligent material level meter.

2. The intelligent asphalt mixing station according to claim 1, characterized in that: The longitudinal partition (2) comprises a partition section (22) and a transition section (23), a material discharge area (6) is formed between two adjacent partition sections (22), the transition section (23) is arc-shaped as a whole, one end of the transition section (23) is fixedly connected to the partition section (22), and the other end is connected to the transverse grid (1), wherein two opposite side edges of the transverse grid (1) are respectively slidably connected to the transition section (23) and the inner wall of the aggregate screening bin (4).

3. The intelligent asphalt mixing station according to claim 1, characterized in that: There is a moving gap (24) between the other two side edges of the transverse grid (1) and the inner wall of the aggregate screening bin (4) for the transverse grid (1) to move. A leak-proof inclined plate (25) is arranged on the moving gap (24). One side of the leak-proof inclined plate (25) is arranged on the inner wall of the aggregate screening bin (4), and the other side extends downward and is located above the edge of the transverse grid (1). The leak-proof inclined plate (25) can be located directly above the transverse grid (1) during the movement of the transverse grid (1) to prevent aggregate from falling from the moving gap (24).

4. The intelligent asphalt mixing station according to claim 1, characterized in that: The telescopic drive (26) drives the adjacent transverse grids (1) to move in opposite directions.

Images