Asphalt milling material screening and crushing all-in-one machine

Abstract

The invention relates to the technical field of crushing, and particularly discloses an asphalt milling and planing material screening and crushing all-in-one machine which comprises a screening unit and a crushing unit, a crushing part in the crushing unit and a grinding tooth plate form efficient occlusion grinding, and a cooling part rapidly cools and solidifies softened asphalt adhered to the crushing part through air blowing; and meanwhile, the driving piece drives the scraping piece to do reciprocating motion in the axial direction of the crushing piece, cured asphalt blocks are thoroughly scraped, the problems of meshing failure, crushing efficiency reduction and equipment blockage caused by asphalt adhesion are solved, the device is suitable for regeneration treatment scenes of asphalt milling materials which are sensitive in temperature and prone to adhesion, and continuous and stable operation of the crushing process is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of crushing technology, and more specifically, to an integrated machine for screening and crushing asphalt milling materials. Background Technology

[0002] In road maintenance and renovation projects, the waste asphalt mixture (i.e. asphalt milling material) generated is a valuable resource that can be recycled and reused. Crushing it is a key preliminary process for recycling. However, asphalt materials are highly temperature sensitive. Although they have a certain hardness at room temperature, the intense friction and impact between the cutting tools and the material during mechanical crushing generates a large amount of instantaneous heat. This heat can easily cause the asphalt components in the asphalt milling material to soften or even melt, making it viscous. When existing crushing equipment processes such materials, the softened asphalt will adhere to the crushing components in large quantities, thus affecting the effective interlocking and gap between the crushing components. The continuous accumulation of the adhering material will reduce the effective crushing space, resulting in a decrease in crushing efficiency and uneven output particle size. Summary of the Invention

[0003] To overcome the above-mentioned technical problems, this invention proposes an integrated machine for screening and crushing asphalt milling materials.

[0004] The objective of this invention can be achieved through the following technical solutions: An integrated machine for screening and crushing asphalt milling materials includes: The frame has a feeding hopper on top; A screening unit includes a screening chamber connected to the outlet of a feeding hopper, a screen is provided at the bottom of the screening chamber, and a debris removal device is provided inside the screening chamber; The crushing unit is located below the screening chamber and includes a crushing chamber and a discharge chute located on one side of the crushing chamber. The crushing chamber contains crushing parts, and the bottom of the crushing chamber is equipped with a grinding tooth plate adapted to the crushing parts. A scraper adapted to the crushing parts is located on one side of the top of the crushing chamber. A drive unit for driving the scraper to reciprocate axially is located on the outside of the crushing chamber. A cooling unit adapted to the crushing parts is located on the other side of the crushing chamber.

[0005] As a further aspect of the present invention: a drive motor is installed on the frame, the output end of the drive motor is connected to the crushing chamber via a first transmission belt, and the output end of the drive motor is connected to the screening chamber via a second transmission belt.

[0006] As a further aspect of the present invention: the crushing component includes a rotating frame rotatably installed in the crushing chamber, a plurality of crushing rollers being rotatably installed on the rotating frame, and a plurality of crushing teeth adapted to the grinding plate being rotatably arranged on the crushing rollers.

[0007] As a further aspect of the present invention: the scraper includes a scraper plate slidably disposed on one side of the top of the crushing chamber, and the inner side of the scraper plate is provided with a plurality of scraper teeth adapted to the crushing component.

[0008] As a further embodiment of the present invention: the driving component includes a telescopic plate disposed at one end of the scraper plate and a turntable coaxially fixedly sleeved on the crushing component. The outer circumferential surface of the turntable is provided with a corrugated groove, and a sliding pin movably embedded in the corrugated groove is fixedly connected to the telescopic plate.

[0009] As a further aspect of the present invention: the cooling component includes an air chamber disposed on one side of the crushing chamber, a fan blade coaxially and fixedly connected to the crushing component is rotatably installed inside the air chamber, an air inlet pipe is connected to the side of the air chamber away from the crushing chamber, an air duct communicating with the interior of the air chamber is axially opened inside the rotating frame, and a plurality of air outlets corresponding to the crushing roller are circumferentially opened at the end of the air duct away from the air chamber.

[0010] As a further embodiment of the present invention: a waste removal unit is also provided on one side of the screening bin. The waste removal unit includes symmetrically arranged surrounding plates, a rotating drum is rotatably installed inside the surrounding plates, and a conveyor belt is sleeved on the rotating drum.

[0011] As a further aspect of the present invention: the impurity removal component includes a rotating shaft rotatably installed in the screening chamber, and the rotating shaft is provided with a plurality of push rods in the circumferential direction.

[0012] As a further embodiment of the present invention: a slot is provided at the connection between the feeding hopper and the screening bin, and a vibrating element is provided at the slot. The vibrating element includes a fixed rod fixed in the slot, a sleeve is rotatably sleeved on the fixed rod, a coil spring is connected between the fixed rod and the sleeve, and a plurality of vibrating rods are equidistantly arranged on the sleeve along the axial direction. The vibrating rods and the lever are staggered along the axial direction.

[0013] As a further embodiment of the present invention: an inclined guide plate is provided at the connection between the screening bin and the conveyor belt, a blower plate is provided above the guide plate, and an exhaust pipe is connected between the blower plate and the air chamber.

[0014] The beneficial effects of this invention are: The crushed parts and the grinding plates form an efficient interlocking and crushing mechanism. The cooling component uses air to quickly cool and solidify the softened asphalt adhering to the crushed parts. At the same time, the drive component drives the scraper to reciprocate along the axis of the crushed parts, thoroughly scraping off the solidified asphalt blocks. This avoids interlocking failure, reduced crushing efficiency, and equipment blockage caused by asphalt adhesion. It is suitable for temperature-sensitive and easily adhered asphalt milling material recycling scenarios, ensuring the continuous and stable operation of the crushing process. The impurity removal components in the screening chamber can effectively remove foreign objects such as wood blocks and steel wires mixed in the milled material. Combined with the screening function of the bottom screen, the material is initially purified and graded, which helps to improve the purity and homogeneity of the material entering the crushing stage, thereby ensuring the quality of the final crushed material. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a three-dimensional schematic diagram from another perspective of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the crushing unit in this invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the driving component in this invention; Figure 7 This is a cross-sectional view of the cooling component in this invention; Figure 8 for Figure 7 Enlarged view at point B in the middle; Figure 9 This is a schematic diagram of the screening unit in this invention; Figure 10 for Figure 9 Enlarged view of point C.

[0017] In the picture: 100. Frame; 110. Feed hopper; 111. Groove; 120. Drive motor; 130. First transmission belt; 140. Second transmission belt; 200. Screening unit; 210. Screening bin; 211. Screen; 212. Guide plate; 220. Impurity removal component; 221. Rotating shaft; 222. Actuating rod; 230. Vibrating component; 231. Fixing rod; 232. Sleeve; 233. Vibrating rod; 300. Crushing unit; 310. Crushing chamber; 320. Crushing component; 321. Rotating frame; 322. Crushing roller; 323. Crushing teeth; 324. Air duct; 325. Air outlet; 330. Crushing tooth plate; 340. Scraper component; 341. Scraper plate; 342. Scraper tooth; 343. Telescopic plate; 344. Turntable; 345. Corrugated chute; 346. Sliding pin; 350. Discharge chute; 360. Cooling component; 361. Air chamber; 362. Fan blade; 363. Air inlet pipe; 364. Air blower plate; 365. Exhaust pipe; 400. Waste removal unit; 410. Enclosure panel; 420. Rotary drum; 430. Conveyor belt. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] Please see Figure 1 , Figure 2 and Figure 3 This invention discloses an integrated asphalt milling material screening and crushing machine, comprising a frame 100, a screening unit 200, and a crushing unit 300. The frame 100 has a feeding hopper 110 at its top. The screening unit 200 includes a screening chamber 210 connected to the outlet of the feeding hopper 110. A screen 211 is provided at the bottom of the screening chamber 210, and a debris removal component 220 is provided inside the screening chamber 210. The crushing unit 300 is located below the screening chamber 210 and includes a crushing chamber 310. The crushing chamber 310 includes a discharge chute 350 located on one side of the crushing chamber 310. The crushing chamber 310 contains a crushing component 320. The bottom of the crushing chamber 310 contains a grinding tooth plate 330 adapted to the crushing component 320. The top side of the crushing chamber 310 contains a scraper 340 adapted to the crushing component 320. The outside of the crushing chamber 310 contains a drive component for driving the scraper 340 to reciprocate along the axial direction. The other side of the crushing chamber 310 contains a cooling component 360 adapted to the crushing component 320. Specifically, the asphalt milling material to be crushed is fed into the feeding hopper 110, and then the milling material enters the screening chamber 210. The milling material is screened by the impurity removal component 220 to remove foreign objects such as wood blocks and steel wires mixed in the milling material. After being screened by the screen 211, the milling material falls into the crushing chamber 310. The crushing component 320 rotates continuously, and the milling material is crushed by the biting and crushing action of the crushing component 320 and the grinding tooth plate 330 at the bottom of the crushing chamber 310. The crushed milling material is then discharged from the discharge chute 350. During continuous rotation, the crusher 320 is cooled by air blowing through the cooling unit 360, which lowers the temperature of the softened asphalt adhering to the crusher 320 and solidifies it. Subsequently, when the crusher 320 rotates to the top of the crushing chamber 310 and comes into contact with the scraper 340, the drive unit drives the scraper 340 to reciprocate axially relative to the crusher 320, thereby scraping off the asphalt blocks adhering to the crusher 320, so as to avoid affecting the smooth engagement of the crusher 320 and the grinding tooth plate 330 and thus preventing the effective crushing of the subsequent milled material.

[0020] The equipment integrates screening and crushing processes. After milling material enters through the feeding hopper 110, it can first be screened for impurities in the screening bin 210, and then falls into the crushing bin 310 for crushing, and finally discharged through the discharge chute 350. This process is continuous and closed, which greatly reduces material transfer links and significantly improves processing efficiency and the smoothness of overall operation.

[0021] It should be noted that the crushing component 320 and the grinding tooth plate 330 form a highly efficient interlocking and crushing mechanism. The cooling component 360 uses air blowing to rapidly cool and solidify the softened asphalt adhering to the crushing component 320. At the same time, the driving component drives the scraper component 340 to reciprocate along the axial direction of the crushing component 320, thoroughly scraping away the solidified asphalt blocks. This avoids interlocking failure, reduced crushing efficiency, and equipment blockage caused by asphalt adhesion. It is suitable for temperature-sensitive and easily adhered asphalt milling material recycling scenarios, ensuring the continuous and stable operation of the crushing process. The impurity removal component 220 installed in the screening chamber 210 can effectively remove foreign objects such as wood blocks and steel wires mixed in the milled material. Combined with the screening function of the bottom screen 211, it realizes the preliminary purification and classification of the material, which helps to improve the purity and homogeneity of the material entering the crushing stage, thereby ensuring the quality of the final crushed material.

[0022] Furthermore, a drive motor 120 is installed on the frame 100. The output end of the drive motor 120 is connected to the crushing chamber 310 via a first transmission belt 130, and the output end of the drive motor 120 is connected to the screening chamber 210 via a second transmission belt 140. Specifically, under the transmission action of the first transmission belt 130 and the second transmission belt 140, the drive motor 120 can simultaneously drive the crushing chamber 310 and the screening chamber 210 to rotate, thereby realizing the synchronous screening and crushing of the milled material.

[0023] It should be noted that a single drive motor 120 provides power for both screening and crushing, and under the synchronous transmission of the first transmission belt 130 and the second transmission belt 140, the screening movement of the screening chamber 210 and the crushing action of the crushing component 320 can be precisely linked. This inherent synchronicity ensures that the upstream screening and downstream crushing processes match their rhythms, effectively avoiding material accumulation or equipment idling caused by inconsistent process rhythms, thus ensuring continuous, efficient and stable operation from screening to crushing.

[0024] In one embodiment, please refer to Figure 4 and Figure 5 The crushing component 320 includes a rotating frame 321 rotatably installed in the crushing chamber 310. The rotating frame 321 is rotatably mounted with a plurality of crushing rollers 322. The crushing rollers 322 are rotatably provided with a plurality of crushing teeth 323 adapted to the grinding plate 330. Specifically, by driving the rotating frame 321 to rotate through the drive motor 120 and the first transmission belt 130, the crushing rollers 322 can be driven to rotate circumferentially within the crushing chamber 310. At the same time, the crushing rollers 322 themselves can also rotate freely. When the crushing rollers 322 mesh with the grinding plate 330, the milling material passing by can be crushed by the meshing action of the crushing teeth 323 on the crushing rollers 322 and the grinding plate 330.

[0025] It is worth noting that the crushing component 320 is driven by the rotating frame 321 to rotate and drive multiple self-rotating crushing rollers 322 to work together. When the rotating frame 321 rotates circumferentially, each crushing roller 322 rotates due to friction when it meshes with the grinding plate 330 while revolving around the center. The combined motion of revolution and rotation forms dynamic crushing and kneading of the material, which can crush the milled material into the required particle size more efficiently and evenly, effectively reduce over-crushing, and improve the quality of recycled material. Multiple crushing rollers 322 are arranged circumferentially, so that the material can pass through the crushing area formed by the multiple crushing rollers 322 and the grinding plate 330 in the crushing chamber 310 in sequence. This multi-stage progressive crushing method disperses the concentrated large impact force into multiple flexible crushing and shearing forces, making the crushing process more stable and effectively reducing the instantaneous impact load and energy consumption of a single crushing. The multiple circumferentially distributed crushing rollers 322 increase the effective working area, enabling the equipment to process more milled material in a single cycle. At the same time, the rotation of the crushing rollers 322 and their cooperation with the scraper 340 make them less susceptible to being trapped and stuck by wet and sticky materials, thus keeping the crushing chamber unobstructed.

[0026] Further, please refer to Figure 5The scraper 340 includes a scraper plate 341 slidably disposed on one side of the top of the crushing chamber 310, and the scraper plate 341 has a plurality of scraper teeth 342 adapted to the crusher 320 on its inner side. Specifically, the drive unit drives the scraper plate 341 to reciprocate and extend along the axis of the rotating frame 321 within the crushing chamber 310. When the corresponding crushing roller 322 passes the scraper plate 341, each crushing tooth 323 on the crushing roller 322 meshes with the corresponding scraping tooth 342 in sequence. While the crushing roller 322 rolls circumferentially relative to the scraper plate 341, an axial relative displacement is generated between the scraping tooth 342 and the crushing tooth 323. The axially reciprocating scraping tooth 342 can be used to scrape off the solidified asphalt block adhering to the corresponding crushing tooth 323.

[0027] It should be noted that the scraper 340 is equipped with scraper teeth 342 that can precisely mesh with the crushing roller 322's grinding teeth 323. When the crushing roller 322 rotates past, the scraper plate 341 moves back and forth along the axial direction under the drive of the drive component, so that the scraper teeth 342 and the grinding teeth 323 generate relative axial displacement during the meshing process. Through the combined action of rolling meshing and axial sliding, it can accurately cut into the gaps between the teeth and the root, and completely peel off the adhered solidified asphalt block from the complex tooth surface. The axial reciprocating motion of the scraper tooth plate 341 allows its cleaning range to cover the entire axial length of the crushing roller 322, ensuring that each set of crushing teeth 323 can have sufficient relative movement with the scraper tooth 342 during one revolution, thereby achieving continuous cleaning of the entire working surface of the crushed part 320 without dead angles, and avoiding the problem of reduced crushing efficiency caused by the accumulation of local adhering materials.

[0028] Furthermore, please refer to Figure 6 The driving component includes a telescopic plate 343 disposed at one end of the scraper plate 341 and a turntable 344 coaxially fixedly sleeved on the crusher 320. The outer peripheral surface of the turntable 344 is provided with a corrugated groove 345, and a sliding pin 346 movably embedded in the corrugated groove 345 is fixedly connected to the telescopic plate 343. Specifically, when the crusher 320 rotates circumferentially, it drives the turntable 344 to rotate synchronously. At the same time, the sliding pin 346 moves adaptively along the corrugated groove 345 on the turntable 344, thereby driving the telescopic plate 343 and the scraper plate 341 to move axially back and forth relative to the crusher 320, so as to realize the axial back and forth sliding of the scraper plate 341 and the crushing roller 322 and scraping.

[0029] It is worth noting that by using the main rotation of the crusher 320 as a power source, the continuous rotation of the main shaft is automatically converted into a stable and reliable axial reciprocating motion of the scraper 341 through the coaxially fixed turntable 344 and corrugated groove 345 structure. The reciprocating motion of the scraper 341 is synchronized with the rotation of the crusher 320, and its motion frequency and stroke are determined by the waveform of the corrugated groove 345.

[0030] Additionally, please see Figure 7 and Figure 8 The cooling component 360 includes an air chamber 361 disposed on one side of the crushing chamber 310. A fan blade 362 coaxially and fixedly connected to the crushing component 320 is rotatably installed inside the air chamber 361. An air inlet pipe 363 is connected to the side of the air chamber 361 away from the crushing chamber 310. An air duct 324 communicating with the interior of the air chamber 361 is axially opened inside the rotating frame 321. A plurality of air outlets 325 corresponding to the crushing roller 322 are circumferentially opened at the end of the air duct 324 away from the air chamber 361. Specifically, when the rotating frame 321 rotates, it can synchronously drive the fan blades 362 to rotate, thereby creating a negative pressure in the air chamber 361, drawing external air into the air chamber 361 through the air inlet pipe 363. Subsequently, the airflow enters the air duct 324 and is ejected from each of the circumferentially opened air outlets 325, thereby blowing air to cool each set of crushing rollers 322. Since the crushing rollers 322 can continue to rotate under the action of inertia after being separated from the grinding plate 330, each grinding tooth 323 on the crushing rollers 322 can be covered by the airflow blown out of the air outlets 325, so as to achieve comprehensive cooling and solidification of the asphalt adhering to the grinding teeth 323.

[0031] It should be noted that the fan blade 362 is directly linked to the main shaft of the crushing component 320. The inherent rotational power of the equipment during operation drives the fan blade 362 to rotate and generate air. Through the air duct 324 set inside the rotating frame 321 and the circumferentially distributed air outlets 325, a closed and directional air cooling path is constructed. The airflow is precisely sprayed from the air outlets 325 to the surface of each crushing roller 322. Combined with the inertial rotation of the crushing roller 322 after disengaging from the bite, it is ensured that each surface of each crushing tooth 323 can be evenly covered by the cold airflow, achieving comprehensive and efficient cooling without dead angles. The cooling effect is instantaneous and automatically triggered, synchronized with the rotation speed of the crushing spindle. The faster the crushing component 320 rotates, the greater the crushing intensity, and the corresponding cooling air volume and intensity also increase synchronously, forming an adaptive synergistic relationship, ensuring that the adhesive asphalt can be cured in the shortest possible time.

[0032] In yet another embodiment, please refer to Figure 3The screening bin 210 is also provided with a waste removal unit 400 on one side. The waste removal unit 400 includes symmetrically arranged surrounding plates 410. A rotating drum 420 is rotatably installed inside the surrounding plates 410. A conveyor belt 430 is sleeved on the rotating drum 420. Specifically, the debris removal unit 220 throws foreign objects such as wood blocks and steel wires mixed in with the milled material from one side opening of the screening chamber 210 onto the conveyor belt 430, and then the conveyor belt 430 removes these foreign objects.

[0033] It should be noted that the conveyor belt 430 automatically receives and removes foreign objects thrown out by the impurity removal component 220, thereby achieving the separation and discharge of impurities and milling material; the symmetrically arranged enclosure plate 410 and the conveyor belt 430 together form a relatively closed conveying channel, which can effectively receive various foreign objects thrown out from the screening chamber 210 and transfer them in a directional and orderly manner, preventing impurities from splashing and scattering during the throwing process.

[0034] Further, please refer to Figure 9 The impurity removal component 220 includes a rotating shaft 221 rotatably installed in the screening chamber 210, and the rotating shaft 221 is circumferentially provided with a plurality of push rods 222; Specifically, the drive motor 120 and the second transmission belt 140 drive the rotating shaft 221 to rotate, thereby driving each set of levers 222 to rotate circumferentially. The levers 222 are used to push the foreign objects such as wood blocks and steel wires mixed in the milled material upward and throw them to one side of the conveyor belt 430, thus realizing the screening of foreign objects.

[0035] It is worth noting that the impurity removal component 220 drives the circumferentially arranged lever 222 to rotate through the rotating shaft 221, actively lifting and throwing up foreign objects such as wood blocks and steel wires mixed in the material. It has a higher removal efficiency for lightweight, fibrous or irregular foreign objects, and can effectively handle impurities that are easily tangled together, making the impurity removal more thorough. By efficiently removing hard metal foreign objects, especially steel wires, in the front-end screening process, the impurity removal component 220 directly protects the subsequent crushing component 320 and the grinding tooth plate 330, preventing them from abnormal wear or jamming damage, and improving the purity of the material from the source.

[0036] Furthermore, please refer to Figure 9 and Figure 10 The feeding hopper 110 and the screening bin 210 are connected by a slot 111. A vibrating element 230 is provided at the slot 111. The vibrating element 230 includes a fixed rod 231 fixed in the slot 111. A sleeve 232 is rotatably sleeved on the fixed rod 231. A coil spring (not shown in the figure) is connected between the fixed rod 231 and the sleeve 232. A plurality of vibrating rods 233 are equidistantly arranged on the sleeve 232 along the axial direction. The vibrating rods 233 and the lever 222 are staggered along the axial direction. Specifically, due to the torque of the coil spring, in the initial state, the vibrating rod 233 is always in a downward-flipped position and in contact with the bottom of the screening chamber 210. When the rotating shaft 221 drives the lever 222 to rotate and push the material, foreign objects inevitably become entangled with the vibrating rod 233. As the lever 222 pushes the foreign object upward, it passes through the gap between the adjacent vibrating rods 233, which can drive the vibrating rod 233 to flip upward at a certain angle. At the same time, it drives the coil spring to coil and store energy. Then, the lever 222 and the vibrating rod 233 are staggered. The foreign object is pulled away from the vibrating rod 233 by the lever 222. The vibrating rod 233 can then flip and reset under the elastic force of the energy-storing coil spring. The flipped and reset vibrating rod 233 can then be used to vibrate and knock the bottom of the screening chamber 210, thereby promoting the milled material to enter the crushing chamber 310 from the screen 211 and preventing the milled material from accumulating and blocking at the bottom of the screening chamber 210.

[0037] It should be noted that when the lever 222 moves the material and drives the vibrating rod 233 to rotate upward, the coil spring stores energy. Then, driven by the return torque of the coil spring, the vibrating rod 233 quickly strikes downward. The periodic high-frequency striking action of the vibrating rod 233 directly acts on the bottom of the screening chamber 210 and the area of ​​the screen 211, which can effectively disperse the clumps of milled material, break the bridging phenomenon of material on the screen 211, and strongly promote the material of qualified particle size to pass smoothly through the screen 211 and fall into the crushing chamber 310, avoiding process interruption caused by the clogging of the screen 211. The vibrating rod 233 and the lever 222 are staggered in the axial direction. When fibrous impurities are wrapped around the vibrating rod 233, the rotating lever 222 will pull them away. This interactive process not only unwraps the wrapped foreign objects, but also helps the lever 222 to complete the impurity removal task more thoroughly.

[0038] Additionally, please see Figure 2 and Figure 3 An inclined guide plate 212 is provided at the connection between the screening bin 210 and the conveyor belt 430. A blower plate 364 is provided above the guide plate 212. An exhaust pipe 365 is connected between the blower plate 364 and the air chamber 361. Specifically, the guide plate 212 guides the foreign objects thrown out by the debris removal component 220, while the airflow in the air chamber 361 passes through the exhaust pipe 365 and is blown downward from the blower plate 364, promoting the smooth arrival of the foreign objects on the conveyor belt 430 and their rapid discharge.

[0039] It is worth noting that by guiding the airflow originally used for cooling to the waste removal station through the exhaust duct 365, this design achieves the secondary use of the same airflow and provides effective wind assistance for the waste removal process; The inclined guide plate 212 provides a defined sliding path for the thrown foreign objects, preventing them from scattering; while the airflow blown downward from the blower plate 364 further pushes and smooths the foreign objects, especially for light, fluffy or easily sticky impurities, effectively overcoming static friction and adsorption, ensuring that they completely detach from the guide plate 212 and smoothly reach the conveyor belt 430.

[0040] The specific embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention, all of which are within the protection scope of the present invention.

Claims

1. An integrated machine for screening and crushing asphalt milling materials, characterized in that, include: The frame (100) has a feeding hopper (110) on its top. The screening unit (200) includes a screening chamber (210) connected to the outlet of the feeding hopper (110), a screen (211) is provided at the bottom of the screening chamber (210), and a cleaning component (220) is provided inside the screening chamber (210). The crushing unit (300) is located below the screening chamber (210) and includes a crushing chamber (310) and a discharge chute (350) located on one side of the crushing chamber (310). The crushing chamber (310) is provided with a crushing component (320). The bottom of the crushing chamber (310) is provided with a grinding tooth plate (330) adapted to the crushing component (320). The top side of the crushing chamber (310) is provided with a scraper (340) adapted to the crushing component (320). The outside of the crushing chamber (310) is provided with a driving component for driving the scraper (340) to reciprocate along the axial direction. The other side of the crushing chamber (310) is provided with a cooling component (360) adapted to the crushing component (320).

2. The asphalt milling material screening and crushing integrated machine according to claim 1, characterized in that, A drive motor (120) is installed on the frame (100). The output end of the drive motor (120) is connected to the crushing chamber (310) via a first transmission belt (130), and the output end of the drive motor (120) is connected to the screening chamber (210) via a second transmission belt (140).

3. The integrated asphalt milling, screening, and crushing machine according to claim 1, characterized in that, The crushing component (320) includes a rotating frame (321) rotatably installed in the crushing chamber (310). A plurality of crushing rollers (322) are rotatably installed on the rotating frame (321) in the circumferential direction. A plurality of crushing teeth (323) adapted to the crushing plate (330) are arranged on the crushing rollers (322) in the circumferential direction.

4. The integrated asphalt milling, screening, and crushing machine according to claim 1, characterized in that, The scraper (340) includes a scraper plate (341) slidably disposed on one side of the top of the crushing chamber (310), and the inner side of the scraper plate (341) is provided with a plurality of scraper teeth (342) adapted to the crusher (320).

5. The asphalt milling material screening and crushing integrated machine according to claim 4, characterized in that, The driving component includes a telescopic plate (343) disposed at one end of the scraper plate (341) and a turntable (344) coaxially fixedly sleeved on the crusher (320). The outer circumferential surface of the turntable (344) is provided with a corrugated groove (345), and a sliding pin (346) movably embedded in the corrugated groove (345) is fixedly connected to the telescopic plate (343).

6. The asphalt milling, screening, and crushing integrated machine according to claim 3, characterized in that, The cooling component (360) includes a wind chamber (361) disposed on one side of the crushing chamber (310). A fan blade (362) coaxially and fixedly connected to the crushing component (320) is rotatably installed inside the wind chamber (361). An air inlet pipe (363) is connected to the side of the wind chamber (361) away from the crushing chamber (310). An air duct (324) communicating with the inside of the wind chamber (361) is axially opened inside the rotating frame (321). A plurality of air outlets (325) corresponding to the crushing roller (322) are circumferentially opened at the end of the air duct (324) away from the wind chamber (361).

7. The asphalt milling material screening and crushing integrated machine according to claim 6, characterized in that, A waste removal unit (400) is also provided on one side of the screening bin (210). The waste removal unit (400) includes symmetrically arranged surrounding plates (410). A rotating drum (420) is rotatably installed inside the surrounding plates (410). A conveyor belt (430) is fitted on the rotating drum (420).

8. The integrated asphalt milling, screening, and crushing machine according to claim 1, characterized in that, The impurity removal component (220) includes a rotating shaft (221) rotatably installed in the screening chamber (210), and the rotating shaft (221) is provided with a plurality of push rods (222) in the circumferential direction.

9. The asphalt milling material screening and crushing integrated machine according to claim 8, characterized in that, A slot (111) is provided at the connection between the feeding hopper (110) and the screening bin (210). A vibrating element (230) is provided at the slot (111). The vibrating element (230) includes a fixed rod (231) fixed in the slot (111). A sleeve (232) is rotatably sleeved on the fixed rod (231). A coil spring is connected between the fixed rod (231) and the sleeve (232). A plurality of vibrating rods (233) are equidistantly arranged on the sleeve (232) along the axial direction. The vibrating rods (233) and the lever (222) are staggered along the axial direction.

10. The integrated asphalt milling, screening, and crushing machine according to claim 7, characterized in that, An inclined guide plate (212) is provided at the junction of the screening bin (210) and the conveyor belt (430). A blower plate (364) is provided above the guide plate (212). An exhaust pipe (365) is connected between the blower plate (364) and the air chamber (361).

Images