Drying device for recycling asphalt concrete waste

Abstract

The utility model relates to the technical field of waste material recovery, in particular to a drying device for asphalt concrete waste recovery. The drying device for asphalt concrete waste recovery comprises a bottom frame, connecting frames, a drying cylinder, a movable frame, a baffle, a filter screen, an air heater, an air inlet pipe, an air outlet pipe, a discharging assembly and a power assembly, the connecting frames are symmetrically connected to the upper side of the bottom frame, and the drying cylinder is connected between the inner sides of the connecting frames. Baffles are connected to the inner side walls of the connecting frames, and a plurality of notches are formed in the baffles at intervals. The first motor drives the rotating frame to rotate, intermittent quantitative discharging of concrete waste is achieved, the amount of the waste entering the drying cylinder each time can be relatively stable and appropriate, in this way, in the drying process, hot air can make uniform contact with the waste of each batch, and the situation that part of the waste cannot be fully heated due to excessive feeding is avoided; or hot air waste caused by too little feeding is avoided.

Description

Technical Field

[0001] This utility model relates to the field of waste material recycling technology, and in particular to a drying device for recycling asphalt concrete waste. Background Technology

[0002] During the recycling of waste asphalt concrete, the waste often contains a certain amount of moisture due to natural environmental factors or the washing process. This moisture significantly affects the quality of the recycled asphalt mixture, therefore, the waste needs to be dried to ensure it can be fully mixed with other materials and meet usage requirements. This step relies heavily on efficient drying equipment.

[0003] Traditional asphalt concrete waste drying equipment suffers from numerous drawbacks in the material feeding stage. Many devices employ continuous feeding, making it difficult to precisely control the amount of waste entering the drying drum. Excessive feeding leads to waste accumulation inside the drum, preventing sufficient hot air penetration and resulting in ineffective drying of some waste, severely impacting the consistency of drying quality. Conversely, insufficient feeding wastes equipment capacity and reduces operational efficiency.

[0004] Meanwhile, traditional drying equipment also has significant problems in handling exhaust air. The exhaust air generated during the drying process typically contains large amounts of dust, asphalt particles, and volatile harmful substances. Traditional equipment often simply releases this exhaust air directly into the atmosphere, causing serious pollution to the surrounding environment. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the technical problem of this utility model is to provide a drying device for recycling asphalt concrete waste.

[0006] The technical implementation scheme of this utility model is as follows: A drying device for recycling asphalt concrete waste includes a base frame, a connecting frame, a drying cylinder, a movable frame, baffles, a filter screen, a hot air blower, an air inlet pipe, an air outlet pipe, a feeding assembly, and a power assembly. The connecting frames are symmetrically connected to the upper side of the base frame, and the drying cylinder is connected between the inner sides of the connecting frames. Baffles are connected to the inner side walls of the connecting frames, and multiple slots are spaced apart on the baffles. Filter screens for intercepting waste are connected to the slots. The movable frame is rotatably connected to the inner side of the drying cylinder. An air inlet pipe is connected to the connecting frame on the left side. The chamber formed between the left connecting frame and the left baffle is interconnected with the air inlet pipe. A hot air blower is installed on the air inlet pipe. An air outlet pipe is connected to the connecting frame on the right side. The chamber between the right connecting frame and the right baffle is interconnected with the air outlet pipe. A feeding assembly is provided at the top of the drying cylinder, and a power assembly is provided on the movable frame.

[0007] In a preferred embodiment of the present invention, the feeding assembly includes a feeding frame, a first motor and a rotating frame. The top of the drying cylinder is connected to and communicates with the feeding frame. The rotating frame is rotatably connected to the lower side of the feeding frame. The first motor is installed on the right side of the feeding frame. The right end of the rotating frame extends through the feeding frame and is connected to the output shaft of the first motor.

[0008] In a preferred embodiment of this utility model, the power assembly includes a second motor, a pinion and a gear ring. The left and right ends of the movable frame are circular ring structures that rotate with the wall of the drying cylinder. The gear ring is connected to the circular structure. The second motor is installed on the left and right sides of the front of the drying cylinder. The pinion is connected to the output shaft of the second motor by a key. The gear ring and the pinion mesh with each other.

[0009] In a preferred embodiment of the present invention, the invention further includes a first cylinder, a push rod, and a top plate. The first cylinder is rotatably connected to the left and right side walls of the upper part of the unloading frame. The push rod is connected to the telescopic rod of the first cylinder. The top plate is rotatably connected to the top of the unloading frame. The push rods on both sides are rotatably connected to the top plate.

[0010] In a preferred embodiment of the present invention, a second cylinder, a moving rod, and a feeding plate are also included. The feeding plate is rotatably connected to the bottom of the drying cylinder, and the second cylinder is symmetrically rotatably connected to the rear side of the bottom of the drying cylinder. The moving rods are connected to the telescopic rods of the second cylinder, and the two moving rods are rotatably connected to the feeding plate respectively.

[0011] In a preferred embodiment of this utility model, a screen is also included, with the bottom of the base frame connected to an obliquely arranged screen, which is in a state of being lower in the front and higher in the back.

[0012] Compared with the prior art, the present invention has the following advantages: 1. The first motor drives the rotating frame to rotate, realizing the intermittent quantitative feeding of concrete waste, which can make the amount of waste entering the drying cylinder relatively stable and appropriate each time. This means that during the drying process, the hot air can come into contact with each batch of waste more evenly, avoiding the situation that some waste cannot be fully heated due to excessive feeding, or that hot air is wasted due to insufficient feeding.

[0013] 2. The hot air blower heats the air for drying, and an external gas processor is used to treat the waste gas generated during drying, reducing the pollution of the environment caused by waste gas emissions, meeting environmental protection requirements, and realizing green operation of waste recycling and drying.

[0014] 3. The second motor drives the movable frame to rotate through the pinion and gear ring, which agitates the waste material in the drying drum, greatly increasing the contact area between the waste material and the hot air, accelerating the drying speed, improving work efficiency, and reducing production costs. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a cross-sectional view of the material feeding frame component of this utility model.

[0017] Figure 3 This is a cross-sectional view of the connecting frame and drying cylinder of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the second cylinder, moving rod, and feeding plate of this utility model.

[0019] The components in the attached diagram are labeled as follows: 1. Base frame, 2. Connecting frame, 3. Drying cylinder, 4. Feeding frame, 5. First cylinder, 6. Push rod, 7. Top plate, 8. First motor, 9. Rotating frame, 10. Second motor, 11. Pinion, 12. Gear ring, 13. Movable frame, 14. Baffle, 15. Filter screen, 16. Hot air blower, 17. Inlet pipe, 18. Outlet pipe, 19. Second cylinder, 20. Moving rod, 21. Feeding plate, 22. Screen. Detailed Implementation

[0020] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. The location descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes.

[0021] Example: A drying device for recycling asphalt concrete waste, such as... Figures 1-3 As shown, it includes a base frame 1, connecting frame 2, drying cylinder 3, movable frame 13, baffle 14, filter screen 15, hot air blower 16, air inlet pipe 17, air outlet pipe 18, and a feeding assembly and a power assembly. Connecting frames 2 are symmetrically connected to the upper left and right sides of the base frame 1. The drying cylinder 3 is connected between the inner sides of the connecting frames 2. Baffles 14 are connected to the inner walls of the connecting frames 2. Multiple slots are spaced apart on the baffles 14, and filter screens 15 for intercepting waste are connected to each slot. The movable frame 13 is rotatably connected to the inner side of the drying cylinder 3. The left side... An air inlet pipe 17 is connected to the connecting frame 2. The chamber formed between the left connecting frame 2 and the left baffle 14 is connected to the air inlet pipe 17. A hot air blower 16 is installed on the air inlet pipe 17. The hot air blower 16 is used to draw in outside air, heat it, and send it into the drying cylinder 3. An air outlet pipe 18 is connected to the right connecting frame 2. The chamber between the right connecting frame 2 and the right baffle 14 is connected to the air outlet pipe 18. It is used to discharge the waste gas generated during the drying process. A feeding assembly is provided at the top of the drying cylinder 3. A power assembly is provided on the movable frame 13.

[0022] like Figures 1-2As shown, the feeding assembly includes a feeding frame 4, a first cylinder 5, a push rod 6, a top plate 7, a first motor 8, and a rotating frame 9. The top of the drying cylinder 3 is connected to and communicates with the feeding frame 4. The rotating frame 9 is rotatably connected to the lower side of the feeding frame 4 via a bearing. The first motor 8 is installed on the right side of the feeding frame 4. The right end of the rotating frame 9 extends through the feeding frame 4 and is connected to the output shaft of the first motor 8 via a coupling. The first cylinder 5 is rotatably connected to the upper left and right side walls of the feeding frame 4 via pins. Push rods 6 are connected to the telescopic rods of the first cylinder 5. The top of the feeding frame 4 is rotatably connected to the top plate 7 via a hinge. The side push rods 6 are rotatably connected to the top plate 7 via pins. When the first cylinder 5 is activated, the telescopic rod of the first cylinder 5 extends, driving the push rod 6 to move upward. Since the push rod 6 and the top plate 7 are rotatably connected via pins, and the top plate 7 is rotatably connected to the top of the discharge frame 4 via a hinge, the upward movement of the push rod 6 will push the top plate 7 to rotate upward and open. At this time, asphalt concrete waste can be added into the discharge frame 4. After the addition is completed, the telescopic rod of the first cylinder 5 is controlled to shorten and reset, driving the push rod 6 to move downward, thereby driving the top plate 7 to reverse and close. This can effectively avoid the generation of a large amount of dust during the waste discharge process.

[0023] like Figure 1 and Figure 3 As shown, the power assembly includes a second motor 10, a pinion 11, and a gear ring 12. The left and right ends of the movable frame 13 are circular structures, which are rotated with the wall of the drying cylinder 3 through bearings. The gear ring 12 is connected to its circular structure. The second motor 10 is installed on the left and right sides of the front of the drying cylinder 3, respectively. The output shaft of the second motor 10 is connected to the pinion 11 through a key. The gear ring 12 and the pinion 11 mesh with each other.

[0024] During the asphalt concrete waste recycling and drying operation, the top plate 7 is first opened by the first cylinder 5, and concrete waste is added into the feeding frame 4. After filling is completed, the top plate 7 is closed, and then the first motor 8 is started. The output shaft of the first motor 8 rotates, driving the rotating frame 9 to rotate through the coupling. The rotation of the rotating frame 9 can intermittently push the waste in the feeding frame 4 downward into the drying cylinder 3, realizing quantitative intermittent feeding. At the same time, the hot air fan 16 is started, which draws in and heats the outside air. The heated air enters the compartment between the left connecting frame 2 and the left baffle 14 through the air inlet pipe 17, and then enters the drying cylinder 3 through the slot and filter screen 15 to dry the waste in the drying cylinder 3. During this process, an external gas processor needs to be connected to the exhaust pipe 18 to discharge the gas generated during the drying of waste material in the drying cylinder 3, preventing environmental pollution. Then, the second motor 10 is started. The output shaft of the second motor 10 rotates, driving the pinion 11 to rotate. Since the pinion 11 meshes with the gear ring 12, and the gear ring 12 is connected to the movable frame 13, the rotation of the pinion 11 drives the gear ring 12 and the movable frame 13 to rotate. The rotation of the movable frame 13 agitates the waste material inside the drying cylinder 3, significantly increasing the contact area between the waste material and the hot air, thereby accelerating the drying speed. After drying is complete, the relevant equipment is shut down, and the dried waste material inside the drying cylinder 3 is collected.

[0025] like Figure 1 and Figure 4 As shown, it also includes a second cylinder 19, a moving rod 20, a feeding plate 21, and a screen 22. The feeding plate 21 is rotatably connected to the bottom of the drying cylinder 3. The second cylinder 19 is rotatably connected to the left and right sides of the bottom rear side of the drying cylinder 3 via pins. The moving rods 20 are connected to the telescopic rods of the second cylinder 19. The two moving rods 20 are rotatably connected to the feeding plate 21 via pins. The bottom of the base frame 1 is connected to an inclined screen 22. The screen 22 is in a state of being lower in the front and higher in the back, which can effectively screen the dried waste into particles. Small particles will fall down through the holes of the screen 22, while large particles will slide forward along the inclined surface of the screen 22.

[0026] After the asphalt concrete waste has been dried, the second cylinder 19 is activated, and its telescopic rod extends, driving the moving rod 20 to move forward. Due to the rotational connection between the moving rod 20 and the discharge plate 21, the moving rod 20 can push the discharge plate 21 to rotate downward and open. During this process, the second cylinder 19 will also rotate accordingly to change its angle. In this way, the material in the drying cylinder 3 will fall downward onto the screen 22, and then the dried waste will be granulated by the screen 22. After the discharge is completed, the telescopic rod of the second cylinder 19 is controlled to shorten and reset, driving the moving rod 20 to reset, thereby pushing the discharge plate 21 to reverse and close.

[0027] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of this invention. Therefore, the scope of this invention should be limited only by the appended claims.

Claims

1. A drying device for recycling of asphalt concrete waste, characterized in that The utility model relates to a drying device, including the base frame (1), the connecting frame (2), drying cylinder (3), movable frame (13), baffle (14), filter screen (15), hot air machine (16), air inlet pipe (17), air outlet pipe (18) and unloading assembly and power assembly, the upper side symmetry of base frame (1) is connected with connecting frame (2), and the inboard of connecting frame (2) is connected with drying cylinder (3), and the inboard wall of connecting frame (2) is all connected with baffle (14), and the baffle (14) is spaced apart and is equipped with a plurality of notches on, and the notch is all connected with the filter screen (15) for intercepting waste, and the inboard of drying cylinder (3) is rotatably connected with movable frame (13), and the left connecting frame (2) is connected with air inlet pipe (17), and the cavity formed between left connecting frame (2) and left baffle (14) and air inlet pipe (17) are interconnected, and hot air machine (16) is installed on air inlet pipe (17), and the right connecting frame (2) is connected with air outlet pipe (18), and the cavity between right connecting frame (2) and right baffle (14) and air outlet pipe (18) are interconnected, and drying cylinder (3) top is equipped with unloading assembly, and movable frame (13) is equipped with power assembly.

2. The drying apparatus for recycling of asphalt concrete waste according to claim 1, characterized in that, The unloading assembly includes a unloading frame (4), a first motor (8), and a rotating frame (9), the top of the drying cylinder (3) is connected with the unloading frame (4), the unloading frame (4) is rotatably connected with the rotating frame (9) at the lower side, and the first motor (8) is installed on the right side of the unloading frame (4), and the rotating frame (9) penetrates out of the unloading frame (4) at the right end and is connected with the output shaft of the first motor (8).

3. The drying apparatus for recycling of asphalt concrete waste according to claim 2, characterized in that, The power assembly includes a second motor (10), a pinion (11), and a gear ring (12), the movable frame (13) is a circular ring structure at both ends, which is rotatably connected with the wall of the drying cylinder (3), and the gear ring (12) is connected on the annular structure, the second motor (10) is installed on the left and right sides of the front part of the drying cylinder (3), the output shaft of the second motor (10) is connected with the pinion (11) through a key, and the gear ring (12) is meshed with the pinion (11).

4. The drying apparatus for recycling of asphalt concrete waste according to claim 3, characterized in that, It also includes a first air cylinder (5), a push rod (6), and a top plate (7), the first air cylinder (5) is rotatably connected on the left and right side walls of the upper part of the unloading frame (4), the push rod (6) is connected on the telescopic rod of the first air cylinder (5), and the top plate (7) is rotatably connected on the top of the unloading frame (4), and the two push rods (6) are rotatably connected with the top plate (7) respectively.

5. The drying apparatus for recycling of asphalt concrete waste material according to claim 4, characterized in that It also includes a second air cylinder (19), a moving rod (20), and a unloading plate (21), the unloading plate (21) is rotatably connected on the bottom of the drying cylinder (3), the second air cylinder (19) is rotatably connected on the bottom rear side of the drying cylinder (3) symmetrically, the moving rod (20) is connected on the telescopic rod of the second air cylinder (19), and the two moving rods (20) are rotatably connected with the unloading plate (21) respectively.

6. The drying apparatus for recycling of asphalt concrete waste according to claim 5, characterized in that, It also includes a screen (22), the screen (22) is connected on the bottom of the base frame (1) and is arranged obliquely, and the screen (22) is in a state of low front and high back.

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