Waste asphalt mixture crushing and recycling device

Abstract

The utility model relates to the technical field of asphalt crushing and recycling, in particular to a waste asphalt mixture crushing and recycling device which comprises a crushing box, a pair of crushing roller sets, a support, two rotating shafts penetrating through bearing seats of the support, fan blades fixedly connected to the ends of the rotating shafts and a driving assembly. Each crushing roller set comprises a conical flow guide pipe fixedly connected to the end of the corresponding crushing roller, two hollow crushing rollers and a plurality of crushing teeth evenly distributed along the outer circumference of the corresponding crushing roller, the two ends of each crushing roller are rotationally matched with shaft holes of the crushing box through bearings, and the fan blades are fixedly connected to the end of the corresponding rotating shaft; the driving assembly is in transmission connection with the two rotating shafts to drive the fan blades to rotate. Through the arrangement of the support, the rotating shaft, the fan blades and the driving assembly, heat generated in the crushing process is effectively dissipated, asphalt is prevented from being melted and bonded in the equipment due to temperature rise, and the crushing efficiency and normal operation of the equipment are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of asphalt crushing and recycling technology, and more specifically, to a waste asphalt mixture crushing and recycling device. Background Technology

[0002] With the development of the road construction and maintenance industry, the recycling and reuse of waste asphalt mixtures has become an important way to save resources and reduce costs. In the process of processing waste asphalt mixtures, crushing is an indispensable preliminary step.

[0003] However, in the existing technology, when the device is crushing asphalt, on the one hand, the mechanical parts of the crushing equipment and the asphalt material generate a lot of heat due to high-speed friction; on the other hand, the crushing equipment operates continuously for a long time, and its own parts also generate heat due to friction. This heat is difficult to dissipate quickly, causing the asphalt temperature to rise and causing the asphalt to melt locally. The melted asphalt will stick to the inside of the crushing equipment, blocking the crushing teeth, flow channels and other structures, affecting the crushing efficiency and normal operation of the equipment. Utility Model Content

[0004] Based on the aforementioned technical problem that in the prior art, when asphalt is crushed, the asphalt undergoes localized melting, and the melted asphalt adheres to the inside of the crushing equipment, clogging the crushing teeth, flow channels, and other structures, thus affecting the crushing efficiency and normal operation of the equipment, this utility model proposes a waste asphalt mixture crushing and recycling device.

[0005] The present invention proposes a waste asphalt mixture crushing and recycling device, which includes a crushing box, a pair of crushing rollers, a support, two rotating shafts penetrating the bearing seat of the support, fan blades fixedly connected to the ends of each of the rotating shafts, and a drive assembly;

[0006] The crushing chamber has symmetrical shaft holes on both sides;

[0007] A pair of crushing rollers includes a tapered guide tube fixedly connected to the end of each crushing roller, two hollow crushing rollers, and a plurality of crushing teeth evenly distributed along the outer circumference of the crushing rollers. The two ends of the crushing rollers are rotatably engaged with the shaft hole of the crushing box through bearings. The inner diameter of the inlet end of the guide tube is larger than the inner diameter of the outlet end, forming a gradually narrowing flow channel.

[0008] The support frame is fixedly connected to the outer wall of the crushing box and is provided with symmetrically distributed bearing seats;

[0009] The rotating shaft and the bearing housing form a rotational fit;

[0010] Fan blades fixedly connected to the ends of each of the aforementioned rotating shafts;

[0011] The drive assembly is connected to two rotating shafts to drive the fan blades to rotate.

[0012] Preferably, the drive assembly includes a connecting shaft, a first gear, and two second synchronous pulleys. The connecting shaft passes through the bracket and is rotatably connected thereto. The two second synchronous pulleys are respectively fixedly connected to the connecting shaft and one of the rotating shaft ends. The two second synchronous pulleys are connected by a synchronous belt drive.

[0013] Preferably, the drive assembly further includes two first synchronous pulleys, which are respectively fixedly connected to the corresponding ends of the rotating shaft, and are connected to each other by a synchronous belt drive.

[0014] Preferably, the drive assembly further includes two second gears, a stepper motor, a fourth gear, and a third gear. The two second gears are respectively fixedly connected to the ends of the corresponding first gears. The first gear meshes with one of the second gears. The third gear is fixedly connected to the end of the crushing roller. The fourth gear is fixedly connected to the output end of the stepper motor and meshes with the third gear.

[0015] Preferably, the waste asphalt mixture crushing and recycling device further includes a frame, the crushing box is fixedly connected to the inner wall of the frame, and a feed hopper is fixedly connected to the top of the crushing box.

[0016] Preferably, a fixed frame is fixedly connected to the outer wall of the frame, a double-acting cylinder is fixedly connected to the inner wall of the fixed frame, and a connecting plate is fixedly connected to the output end of the double-acting cylinder.

[0017] Preferably, the waste asphalt mixture crushing and recycling device further includes an inclined mounting frame, a screen is fixedly connected to the inner wall of the mounting frame, a limit frame is fixedly connected to the top of the mounting frame, and two sliding rods are fixedly connected to the bottom of the mounting frame. The ends of the sliding rods pass through the frame and are slidably connected thereto, and a connecting plate is fixedly connected to the two sliding rods respectively.

[0018] Preferably, the inner walls of the two crushing rollers are fixedly connected with multiple reinforcing ribs.

[0019] The beneficial effects of this utility model, achieved through the above technical solution, are as follows:

[0020] 1. The design of the support frame, rotating shaft, fan blades, and drive components effectively dissipates the heat generated during the crushing process, preventing asphalt from melting and sticking inside the equipment due to temperature rise, thus ensuring crushing efficiency and normal equipment operation.

[0021] 2. During the crushing process, the crushing roller is subjected to large extrusion and impact forces. The reinforcing ribs can effectively disperse the stress, prevent the crushing roller from deforming or being damaged, and extend the service life of the crushing roller. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal installation structure of the pulverizing box of this utility model;

[0024] Figure 3 This is a schematic diagram of the installation structure of the guide tube of this utility model;

[0025] Figure 4 This is a schematic diagram of the installation structure of the reinforcing rib of this utility model;

[0026] Figure 5 This is a schematic diagram of the installation structure of the double-acting cylinder of this utility model;

[0027] Figure 6 This is a schematic diagram of the installation structure of the screen of this utility model.

[0028] In the diagram: 1. Frame; 2. Crushing box; 3. Feed hopper; 4. Crushing roller; 5. Crushing teeth; 6. Guide pipe; 7. Reinforcing rib; 8. Support; 9. Rotating shaft; 10. First synchronous pulley; 11. Connecting shaft; 12. Second synchronous pulley; 13. Fan blade; 14. First gear; 15. Second gear; 16. Third gear; 17. Stepper motor; 18. Fourth gear; 19. Mounting frame; 20. Limiting frame; 21. Screen; 22. Slide rod; 23. Fixing frame; 24. Double-acting cylinder; 25. Connecting plate. Detailed Implementation

[0029] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. In this utility model, unless otherwise expressly specified and limited, the term "fixed connection" should be interpreted broadly. For example, "fixed connection" can mean fixed installation, detachable connection, or integral; it can mean mechanical connection or electrical connection; it can mean direct connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] like Figures 1-3 As shown, a waste asphalt mixture crushing and recycling device includes a crushing box 2, a pair of crushing rollers, a support 8, two rotating shafts 9 penetrating the bearing seats of the support 8, fan blades 13 fixedly connected to the ends of each rotating shaft 9, and a drive assembly.

[0031] The crushing box 2 has symmetrical shaft holes on both sides;

[0032] A pair of crushing rollers includes a tapered guide tube 6 fixedly connected to the ends of each crushing roller 4, two hollow crushing rollers 4, and multiple crushing teeth 5 evenly distributed along the outer circumference of the crushing rollers 4. The two ends of the crushing rollers 4 are rotatably engaged with the shaft holes of the crushing box 2 through bearings. The inner diameter of the inlet end of the guide tube 6 is larger than the inner diameter of the outlet end to form a gradually narrowing flow channel.

[0033] The support 8 is fixedly connected to the outer wall of the crushing box 2 and is provided with symmetrically distributed bearing seats;

[0034] The rotating shaft 9 forms a rotational fit with the bearing housing;

[0035] Fan blades 13 are fixedly connected to the ends of each rotating shaft 9;

[0036] The drive assembly is connected to two rotating shafts 9 to drive the fan blades 13 to rotate.

[0037] Two crushing rollers 4 rotate in opposite directions and cooperate with crushing teeth 5 to effectively crush waste asphalt mixture;

[0038] The arrangement of the support frame 8, rotating shaft 9, fan blade 13, and drive assembly enables effective heat dissipation during the crushing process, preventing asphalt from melting and sticking inside the equipment due to temperature rise, thus ensuring crushing efficiency and normal equipment operation.

[0039] In some embodiments, such as Figures 1-6 As shown, the drive assembly includes a connecting shaft 11, a first gear 14, and two second synchronous pulleys 12. The connecting shaft 11 passes through the bracket 8 and is rotatably connected to it. The two second synchronous pulleys 12 are respectively fixedly connected to the connecting shaft 11 and one of the rotating shafts 9. The two second synchronous pulleys 12 are connected by a synchronous belt drive.

[0040] The drive assembly also includes two first synchronous pulleys 10, which are fixedly connected to the ends of corresponding rotating shafts 9, and are connected to each other by a synchronous belt drive.

[0041] The drive assembly also includes two second gears 15, a stepper motor 17, a fourth gear 18, and a third gear 16. The two second gears 15 are respectively fixedly connected to the ends of the corresponding first gears 14, and the first gear 14 meshes with one of the second gears 15. The third gear 16 is fixedly connected to the end of the crushing roller 4. The fourth gear 18 is fixedly connected to the output end of the stepper motor 17, and the fourth gear 18 meshes with the third gear 16.

[0042] The number of teeth on the second gear 15 is four times the number of teeth on the first gear 14.

[0043] The arrangement of the two first synchronous pulleys 10 and the synchronous belt further ensures the synchronicity of the rotation of the two rotating shafts 9, enabling the two fan blades 13 to rotate at the same speed, generating a uniform and stable airflow and enhancing the heat dissipation effect.

[0044] In some embodiments, such as Figure 1 As shown, the waste asphalt mixture crushing and recycling device also includes a frame 1, a crushing box 2 fixedly connected to the inner wall of the frame 1, and a feed hopper 3 fixedly connected to the top of the crushing box 2.

[0045] The feed hopper 3 facilitates the feeding of waste asphalt mixture, allowing the material to smoothly enter the crushing box 2.

[0046] In some embodiments, such as Figure 1 , Figure 5 and Figure 6 As shown, a fixed frame 23 is fixedly connected to the outer wall of the frame 1, a double-acting cylinder 24 is fixedly connected to the inner wall of the fixed frame 23, and a connecting plate 25 is fixedly connected to the output end of the double-acting cylinder 24. The waste asphalt mixture crushing and recycling device also includes an inclined mounting frame 19, a screen 21 is fixedly connected to the inner wall of the mounting frame 19, a limit frame 20 is fixedly connected to the top of the mounting frame 19, and two sliding rods 22 are fixedly connected to the bottom of the mounting frame 19. The ends of the sliding rods 22 pass through the frame 1 and are slidably connected to it. The connecting plate 25 is fixedly connected to the two sliding rods 22 respectively.

[0047] The double-acting cylinder 24 can provide stable and adjustable thrust, and the amplitude and frequency of vibration of the mounting frame 19 can be flexibly adjusted by controlling the extension and retraction of the cylinder.

[0048] In some embodiments, such as Figure 4 As shown, the inner walls of the two crushing rollers 4 are fixedly connected with multiple reinforcing ribs 7.

[0049] During the crushing process, the crushing roller 4 is subjected to large extrusion and impact forces. The reinforcing rib 7 can effectively disperse the stress, prevent the crushing roller 4 from deforming or being damaged, and extend the service life of the crushing roller 4.

[0050] Working principle: Stepper motor 17 starts and drives third gear 16 to rotate through fourth gear 18 at the output end, which in turn drives one of the crushing rollers 4 to rotate. This crushing roller 4 drives another crushing roller 4 to rotate in the opposite direction through second gear 15, thereby squeezing, shearing and crushing the waste asphalt mixture.

[0051] One of the second gears 15 drives the first gear 14 to rotate, which in turn drives the connecting shaft 11 to rotate. The connecting shaft 11 drives one of the rotating shafts 9 to rotate via the second synchronous wheel 12. This rotating shaft 9 drives another rotating shaft 9 to rotate via the first synchronous wheel 10, thereby driving the fan blade 13 to rotate. This allows external air to pass quickly through the guide pipe 6 into the crushing roller 4, facilitating heat dissipation from the crushing roller 4, reducing heat accumulation, and reducing the heat generated by high-speed friction between mechanical parts and asphalt materials, as well as the operation of the equipment itself, thus preventing the asphalt from melting due to excessive temperature.

[0052] After the crushed asphalt mixture is discharged from the crushing box 2, it falls onto the screen 21 inside the mounting frame 19. The double-acting cylinder 24 is started, and its output end drives the connecting plate 25 to move. The connecting plate 25 drives the sliding rod 22 to move, causing the mounting frame 19 to shake. The screen 21 screens the crushed asphalt mixture. Qualified materials fall through the screen 21 and are recycled, while unqualified larger particles are discharged through the inclined end of the screen 21.

[0053] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A waste asphalt mixture crushing and recycling device, characterized in that, include: The crushing box (2) has symmetrical shaft holes on both sides; A pair of crushing rollers, comprising two hollow crushing rollers (4) and a plurality of crushing teeth (5) evenly distributed along the outer circumference of the crushing rollers (4), wherein the two ends of the crushing rollers (4) are rotatably engaged with the shaft holes of the crushing box (2) through bearings; A tapered guide tube (6) is fixedly connected to the end of each of the crushing rollers (4), and the inner diameter of the inlet end of the guide tube (6) is larger than the inner diameter of the outlet end to form a gradually narrowing flow channel; The support (8) is fixedly connected to the outer wall of the crushing box (2) and is provided with symmetrically distributed bearing seats; Two rotating shafts (9) pass through the bearing housing of the support (8), and the rotating shafts (9) form a rotational fit with the bearing housing; Fan blades (13) are fixedly connected to the ends of each of the rotating shafts (9); The drive assembly is connected to two rotating shafts (9) to drive the fan blades (13) to rotate.

2. The waste asphalt mixture crushing and recycling device according to claim 1, characterized in that: The drive assembly includes a connecting shaft (11), a first gear (14), and two second synchronous pulleys (12). The connecting shaft (11) passes through the bracket (8) and is rotatably connected to it. The two second synchronous pulleys (12) are respectively fixedly connected to the end of the connecting shaft (11) and one of the rotating shafts (9). The two second synchronous pulleys (12) are connected by a synchronous belt drive.

3. The waste asphalt mixture crushing and recycling device according to claim 2, characterized in that: The drive assembly also includes two first synchronous pulleys (10), which are fixedly connected to the ends of corresponding rotating shafts (9) and are connected to each other by a synchronous belt drive.

4. The waste asphalt mixture crushing and recycling device according to claim 3, characterized in that: The drive assembly also includes two second gears (15), a stepper motor (17), a fourth gear (18), and a third gear (16). The two second gears (15) are respectively fixedly connected to the ends of the corresponding first gears (14). The first gear (14) meshes with one of the second gears (15). The third gear (16) is fixedly connected to the end of the crushing roller (4). The fourth gear (18) is fixedly connected to the output end of the stepper motor (17). The fourth gear (18) meshes with the third gear (16).

5. The waste asphalt mixture crushing and recycling device according to claim 4, characterized in that: It also includes a frame (1), the crushing box (2) is fixedly connected to the inner wall of the frame (1), and the top of the crushing box (2) is fixedly connected to a feed hopper (3).

6. The waste asphalt mixture crushing and recycling device according to claim 5, characterized in that: A fixed frame (23) is fixedly connected to the outer wall of the frame (1), and a double-acting cylinder (24) is fixedly connected to the inner wall of the fixed frame (23). A connecting plate (25) is fixedly connected to the output end of the double-acting cylinder (24).

7. The waste asphalt mixture crushing and recycling device according to claim 6, characterized in that: It also includes an inclined mounting frame (19), with a screen (21) fixedly connected to the inner wall of the mounting frame (19), a limit frame (20) fixedly connected to the top of the mounting frame (19), and two slide rods (22) fixedly connected to the bottom of the mounting frame (19). The ends of the slide rods (22) pass through the frame (1) and are slidably connected thereto. The connecting plate (25) is fixedly connected to the two slide rods (22) respectively.

8. The waste asphalt mixture crushing and recycling device according to claim 7, characterized in that: Multiple reinforcing ribs (7) are fixedly connected to the inner walls of the two crushing rollers (4).

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