Raw material screening device for asphalt production
By automatically cleaning the blocked raw materials in the screening device for asphalt production raw materials using insert rods and elastic spring mechanisms, the problem of screen clogging in the existing technology affecting screening efficiency is solved, and efficient automatic cleaning and continuous cleaning are achieved Screening.
Patent Information
- Application Number
- CN202421036232.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-13
AI Technical Summary
The commonly used round-rolling screening method in the existing asphalt recycled material screening process is prone to the phenomenon of clogging the screening mesh, which affects the screening efficiency and requires staff to clean it regularly.
A raw material screening device for asphalt production is designed, using the insertion rod and the elastic spring mechanism. Through the insertion rod and the inclined surface of the inner wall of the screen hole, the insertion rod and the connecting plate push the limit block when the screen rotates, and the elastic spring is subjected to Compress, push the insertion rod into the next row of screen holes, clean out the blocked raw materials, and realize automatic cleaning.
It effectively solves the problem of screening hole sieve material, improves screening efficiency, reduces the need for manual cleaning, and ensures the continuity and efficiency of the screening process.
Smart Images
Figure CN222201259U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of asphalt raw material screening, and in particular to a raw material screening device for asphalt production. Background Art
[0002] Asphalt pavement regeneration is a technology that involves excavating or milling the pavement, recycling old materials, crushing and screening, adding a portion of new aggregate and new asphalt to remix, and adding regeneration agents when necessary to obtain a recycled asphalt mixture that meets the performance requirements of high-grade highways and is used for paving the pavement surface or base layer. It is a modern environmental protection technology with the most economic value and social benefits, which maximizes the use of resources and protects the environment by reusing asphalt and gravel in pavement materials. Normally, recycled materials need to be crushed and screened before they can be reused.
[0003] At present, the commonly used screening method is to screen the asphalt recycled material through a roller screen method. Aggregates with particle sizes smaller than the screen holes are recovered through the screen holes, and waste materials with particle sizes larger than the screen holes are discharged from above the screen. During the screening process, the screen will be blocked by raw materials equivalent to the screen hole diameter, causing material jamming, which affects the screening efficiency and requires staff to perform regular cleaning. Utility Model Content
[0004] In order to promptly deal with the problem of material stuck in the sieve holes, the present application provides a raw material screening device for asphalt production.
[0005] The present application provides a raw material screening device for asphalt production, which adopts the following technical solution:
[0006] A raw material screening device for asphalt production comprises a support frame, a rotary screen is arranged on the support frame, a fixed block is arranged on the support frame, a limited cavity is provided in the fixed block, a connecting port connected to the limited cavity is provided on the fixed block near the rotary screen, a connecting plate is arranged below the fixed block, a connecting rod is arranged on the connecting plate and extends into the limited cavity, a limit block located in the limit cavity is arranged at the end of the connecting rod, the limit block can move along the length direction of the limit cavity, an elastic spring is arranged in the limit cavity, two ends of the elastic spring are fixedly connected to the limit block and the inner wall of the limit cavity, a plurality of plug rods are arranged at intervals along the length direction of the connecting plate away from one end of the connecting rod, and the plurality of plug rods correspond to a row of sieve holes on the rotary screen one by one, and an inclined surface is provided on the end of the plug rod away from the connecting rod along the rotation direction of the rotary screen, and when the elastic spring is in a natural state, the end of the plug rod is located in the sieve hole of the rotary screen.
[0007] By adopting the above technical scheme, the end of the insertion rod is located in the sieve hole of the rotary screen, and the rotary screen rotates. During the rotation of the rotary screen, the inner wall of the sieve hole of the rotary screen contacts the inclined surface of the end of the insertion rod, and when the rotary screen continues to rotate, the insertion rod and the connecting plate move away from the rotary screen, the limit block moves along the limit cavity, and the elastic spring is compressed. When the sieve hole of the rotary screen corresponds to the insertion rod, the compressed elastic spring pushes the limit block to move the insertion rod toward the sieve hole, so that a row of insertion rods on the connecting plate extends into the next row of sieve holes of the screen, and the raw materials blocked in the sieve holes are poked out of the sieve holes. After the screen is rotated one circle, each row of sieve holes on the screen is cleaned by the insertion rods on the connecting plate, and the stuck material in the sieve holes is dealt with in time.
[0008] Optionally, a driving cylinder is provided on the support frame, and the end of the fixing block away from the connecting port is fixedly connected to the piston rod of the driving cylinder.
[0009] By adopting the above technical solution, the driving cylinder is started, and the piston rod of the driving cylinder moves to drive the fixed block to move.
[0010] Optionally, a limiting tube is provided at one end of the limiting block away from the connecting rod, a limiting rod matching the limiting tube is provided in the limiting cavity, the limiting rod extends into the limiting tube and is movably connected to the limiting tube, and the elastic spring is sleeved outside the limiting rod and the limiting tube.
[0011] By adopting the above technical solution, when the limit block moves in the limit cavity, the limit rod moves in the limit tube, thereby improving the stability of the limit block movement and protecting the elastic spring, thereby reducing the possibility of bending of the elastic spring.
[0012] Optionally, a first conveyor belt and a second conveyor belt are further included, wherein an output end of the first conveyor belt extends deep into the rotary screen, and an input end of the second conveyor belt is located below the rotary screen.
[0013] By adopting the above technical solution, the raw materials are conveyed by the first conveyor belt, and the finished materials that meet the standards after screening are conveyed by the second conveyor belt.
[0014] Optionally, guide plates are provided on both sides of the first conveyor belt and the second conveyor belt.
[0015] By adopting the above technical solution, the material guide plate limits and guides the materials on the first conveyor belt and the second conveyor belt, thereby reducing the possibility of the materials falling from the first conveyor belt or the second conveyor belt.
[0016] Optionally, a baffle is provided on the first conveyor belt, a gap is left between the baffle and the first conveyor belt, a lifting block is provided on one side of the baffle, and a guide block is provided on the other side of the baffle, a lifting screw is rotatably connected in the guide plate on one side of the first conveyor belt along the vertical direction, a guide rod is provided in the guide plate on the other side of the first conveyor belt along the vertical direction, the lifting screw is threadedly connected to the lifting block, and the guide rod passes through the guide block and is movably connected to the guide block.
[0017] By adopting the above technical solution, the relative distance between the baffle and the first conveyor belt is adjusted by rotating the lifting screw. During the process of the first conveyor belt conveying the raw materials, the baffle blocks the materials accumulated on the first conveyor belt to prevent the first conveyor belt from conveying piled materials to the rotary screen, thereby improving the screening efficiency of the rotary screen.
[0018] Optionally, dust covers are provided above the first conveyor belt and the second conveyor belt.
[0019] By adopting the above technical solution, the dust cover blocks the dust generated during the material conveying process on the first conveyor belt and the second conveyor belt, thereby protecting the working environment.
[0020] Optionally, the support frame is provided with a dustproof box which is sleeved outside the rotary screen.
[0021] By adopting the above technical solution, the dustproof box blocks the dust generated during the screening process and protects the working environment.
[0022] Optionally, the dustproof box is provided with a discharge port at one end close to the rotary screen discharge, and the outer wall of the dustproof box is provided with a discharge channel located below the discharge port.
[0023] By adopting the above technical solution, the waste in the rotary screen is moved out of the rotary screen through the discharge port, and the waste is collected through the discharge channel.
[0024] In summary, the present application includes at least one of the following beneficial technical effects:
[0025] The end of the insertion rod is located in the sieve hole of the rotary screen, and the rotary screen rotates. During the rotation of the rotary screen, the inner wall of the sieve hole of the rotary screen contacts the inclined surface of the end of the insertion rod, and when the rotary screen continues to rotate, the insertion rod and the connecting plate move away from the rotary screen, and the limit block moves along the limit cavity, and the elastic spring is compressed. When the sieve hole of the rotary screen corresponds to the insertion rod, the compressed elastic spring pushes the limit block to move the insertion rod toward the sieve hole, so that a row of insertion rods on the connecting plate extends into the next row of sieve holes of the screen, and the raw materials blocked in the sieve holes are poked out of the sieve holes. After the screen is rotated for one circle, each row of sieve holes on the screen is cleaned by the insertion rod on the connecting plate, and the stuck material in the sieve holes is dealt with in time.
[0026] The relative distance between the baffle and the first conveyor belt is adjusted by rotating the lifting screw. During the process of the first conveyor belt conveying the raw materials, the baffle blocks the materials accumulated on the first conveyor belt to prevent the first conveyor belt from conveying piled materials to the rotary screen, thereby improving the screening efficiency of the rotary screen. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 The present invention is a schematic diagram of the overall structure of a raw material screening device for asphalt production.
[0028] Figure 2 It is a schematic diagram used to illustrate the connection relationship between the first conveyor belt and the rotary screen in the embodiment of the present application.
[0029] Figure 3 It is a schematic diagram of the structure of the baffle on the first conveyor belt in the embodiment of the present application.
[0030] Figure 4 It is a schematic diagram of the structure of the dustproof box used to illustrate the embodiment of the present application.
[0031] Figure 5 It is a schematic diagram used to illustrate the connection relationship between the fixing block and the connecting rod in the embodiment of the present application.
[0032] Explanation of the accompanying drawings: 1. Support frame; 11. Dustproof box; 111. Discharge port; 112. Discharge channel; 12. Rotary screen; 2. First conveyor belt; 21. Guide plate; 22. Dust cover; 23. Baffle; 231. Guide block; 232. Lifting block; 24. Guide rod; 25. Lifting screw; 251. Driving motor; 3. Second conveyor belt; 4. Driving cylinder; 5. Fixed block; 51. Limiting cavity; 52. Connecting port; 53. Elastic spring; 54. Limiting rod; 6. Connecting plate; 61. Connecting rod; 62. Limiting block; 621. Limiting tube; 63. Insert rod; 631. Inclined surface. DETAILED DESCRIPTION
[0033] The present application is further described in detail below in conjunction with all the accompanying drawings.
[0034] The embodiment of the present application discloses a raw material screening device for asphalt production.
[0035] Reference Figure 1 and Figure 2A raw material screening device for asphalt production includes a support frame 1, a first conveyor belt 2 and a second conveyor belt 3. A dustproof box 11 is installed on the support frame 1. A rotating screen 12 located in the dustproof box 11 is installed on the support frame 1. The dustproof box 11 blocks the dust generated during the rotating screen 12 to protect the working environment. The output end of the first conveyor belt 2 goes deep into the rotating screen 12, and the raw materials are transported by the first conveyor belt 2. The input end of the second conveyor belt 3 is located below the rotating screen 12, and the finished materials that meet the standards after screening are transported by the second conveyor belt 3.
[0036] Reference Figure 1 , guide plates 21 are fixedly installed on both sides of the first conveyor belt 2 and the second conveyor belt 3. The guide plates 21 limit and guide the materials on the first conveyor belt 2 and the second conveyor belt 3 to reduce the possibility of the materials falling from the first conveyor belt 2 or the second conveyor belt 3. Dust covers 22 are installed above the first conveyor belt 2 and the second conveyor belt 3. The bottom sides of the dust covers 22 are connected to the tops of the guide plates 21 on both sides. The dust covers 22 block the dust generated during the material transportation process on the first conveyor belt 2 and the second conveyor belt 3, and protect the working environment.
[0037] Reference Figure 1 and Figure 3 , a baffle 23 is installed on the first conveyor belt 2, a gap is left between the baffle 23 and the first conveyor belt 2, a lifting block 232 is fixedly connected to one side of the baffle 23, a guide block 231 is fixedly connected to the other side of the baffle 23, a lifting screw 25 is connected to the guide plate 21 on one side of the first conveyor belt 2 in a vertical direction, a driving motor 251 for driving the lifting screw 25 to rotate is installed on the guide plate 21, the output shaft of the driving motor 251 is coaxially fixedly connected to the lifting screw 25, a guide rod 24 is installed in the guide plate on the other side of the first conveyor belt 2 in a vertical direction, the lifting screw 25 is threadedly connected to the lifting block 232, and the guide rod 24 passes through the guide block 231 and is movably connected to the guide block 231. If the raw materials transported on the first conveyor belt 2 enter the rotary screen 12 in an accumulated state, some of the raw materials are likely to not be screened, affecting the screening efficiency. Start the drive motor 251, and adjust the relative distance between the baffle 23 and the first conveyor belt 2 by rotating the lifting screw 25. When the first conveyor belt 2 is conveying raw materials, the baffle 23 blocks the materials accumulated on the first conveyor belt 2 to prevent the first conveyor belt 2 from conveying piled materials to the rotary screen 12, thereby improving the screening efficiency of the rotary screen 12.
[0038] Reference Figure 2 and Figure 4A discharge port 111 is provided at one end of the dustproof box 11 near the discharge port of the rotary screen 12, and a discharge channel 112 located below the discharge port 111 is installed on the outer wall of the dustproof box 11. The rotary screen 12 is tilted in the dustproof box 11, and the height of the end of the rotary screen 12 near the discharge port 111 is lower than the height of the end of the rotary screen 12 near the first conveyor belt 2. The material in the rotary screen 12 moves toward the discharge port 111 due to gravity, and the waste in the rotary screen 12 moves out of the rotary screen 12 through the discharge port 111, and the waste is collected through the discharge channel 112.
[0039] Reference Figure 5 A driving cylinder 4 is installed on the support frame 1, and a piston rod of the driving cylinder 4 is fixedly connected to a fixed block 5. When the driving cylinder 4 is started, the piston rod of the driving cylinder 4 moves to drive the fixed block 5 to move. A limited cavity 51 is provided in the fixed block 5. A connecting port 52 communicating with the limited cavity 51 is provided on the side of the fixed block 5 close to the rotary screen 12. A connecting plate 6 is provided below the fixed block 5. A connecting rod 61 extending into the limited cavity 51 is fixedly connected to the connecting plate 6. A limited block 62 located in the limited cavity 51 is fixedly installed at the end of the connecting rod 61. The limited block 62 It can move along the length direction of the limiting cavity 51, and an elastic spring 53 is installed in the limiting cavity 51. Both ends of the elastic spring 53 are fixedly connected to the limiting block 62 and the inner wall of the limiting cavity 51. A plurality of plug rods 63 are arranged at intervals along the length direction of the connecting plate 6 at one end away from the connecting rod 61. The plurality of plug rods 63 correspond one-to-one to a row of sieve holes on the rotary screen 12. An inclined surface 631 is provided at the end of the plug rod 63 away from the connecting rod 61 along the rotation direction of the rotary screen 12. When the elastic spring 53 is in a natural state, the end of the plug rod 63 is located in the sieve hole of the rotary screen 12. After the rotary screen 12 completes the screening work, the driving cylinder 4 is started to move the fixed block 5 so that the end of the insertion rod 63 is located in the sieve hole of the rotary screen 12, and the rotary screen 12 is rotated. During the rotation of the rotary screen 12, the inner wall of the sieve hole of the rotary screen 12 contacts the inclined surface 631 of the end of the insertion rod 63, and when the rotary screen 12 continues to rotate, the insertion rod 63 and the connecting plate 6 move away from the rotary screen 12, and the limit block 62 moves along the limit cavity 51, and the elastic spring 53 is compressed. When the sieve hole of the rotary screen 12 corresponds to the insertion rod 63, the compressed elastic The spring 53 pushes the limit block 62 to move the insertion rod 63 toward the sieve hole, so that the insertion rod 63 on the connecting plate 6 extends into the next row of sieve holes of the sieve, and the raw materials blocked in the sieve holes are poked out of the sieve holes. After the sieve is rotated one circle, each row of sieve holes on the sieve is cleaned by the insertion rod 63 on the connecting plate 6, and the material jamming in the sieve holes is dealt with in time. After the sieve holes are cleaned, the driving cylinder 4 is started to move the fixed block 5 away from the rotating screen 12, and the positions of the fixed block 5, the connecting plate 6 and the insertion rod 63 are adjusted by the driving cylinder 4.
[0040] Reference Figure 5The end of the limit block 62 away from the connecting rod 61 is fixedly connected to the limit tube 621, and a limit rod 54 matching the limit tube 621 is installed in the limit cavity 51. The limit rod 54 extends into the limit tube 621 and is movably connected to the limit tube 621, and the elastic spring 53 is sleeved outside the limit rod 54 and the limit tube 621. When the limit block 62 moves in the limit cavity 51, the limit rod 54 moves in the limit tube 621, thereby improving the stability of the movement of the limit block 62, and protecting the elastic spring 53, reducing the possibility of bending of the elastic spring 53.
[0041] The implementation principle of the raw material screening device for asphalt production in the embodiment of the present application is as follows: the raw material is conveyed to the rotary screen 12 for screening through the first conveyor belt 2, and the finished material that meets the standards after screening is conveyed through the second conveyor belt 3, and the waste material in the rotary screen 12 is moved out of the rotary screen 12 through the discharge port 111. After the screening work is completed, the connecting plate 6 is moved to move the end of the insertion rod 63 into the sieve hole of the rotary screen 12, and the rotary screen 12 rotates. During the rotation of the rotary screen 12, the inner wall of the sieve hole of the rotary screen 12 contacts the inclined surface 631 at the end of the insertion rod 63 and the rotary screen 12 continues to move, so that The insertion rod 63 and the connecting plate 6 move away from the rotating screen 12, the limit block 62 moves along the limit cavity 51, and the elastic spring 53 is compressed. When the screen holes of the rotating screen 12 correspond to the insertion rod 63, the compressed elastic spring 53 pushes the limit block 62 to move the insertion rod 63 toward the screen holes, so that the insertion rods 63 on the connecting plate 6 are extended into the next row of screen holes of the screen, and the raw materials blocked in the screen holes are poked out of the screen holes. After the screen is rotated one circle, each row of screen holes on the screen is cleaned by the insertion rod 63 on the connecting plate 6, and the material jamming in the screen holes is dealt with in time.
[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A raw material screening device for asphalt production, comprising a support frame (1), on which a rotating screen (12) is arranged, characterized in that: The support frame (1) is provided with a fixed block (5), a limited cavity (51) is provided in the fixed block (5), a communication port (52) communicating with the limited cavity (51) is provided on a side of the fixed block (5) close to the rotary screen (12), a connecting plate (6) is provided below the fixed block (5), a connecting rod (61) extending into the limited cavity (51) is provided on the connecting plate (6), a limited block (62) located in the limited cavity (51) is provided at the end of the connecting rod (61), the limited block (62) can move along the length direction of the limited cavity (51), and the limited cavity ( An elastic spring (53) is arranged in the rotating screen (12), and both ends of the elastic spring (53) are fixedly connected to the limit block (62) and the inner wall of the limit cavity (51). A plurality of insertion rods (63) are arranged at intervals along the length direction of the connecting plate (6) at one end of the connecting plate (6) away from the connecting rod (61). The plurality of insertion rods (63) correspond to a row of sieve holes on the rotating screen (12) one by one. An inclined surface (631) is provided at the end of the insertion rod (63) away from the connecting rod (61) along the rotation direction of the rotating screen (12). When the elastic spring (53) is in a natural state, the end of the insertion rod (63) is located in the sieve hole of the rotating screen (12).
2. A raw material screening device for asphalt production according to claim 1, characterized in that: The support frame (1) is provided with a driving cylinder (4), and the end of the fixing block (5) away from the connecting port (52) is fixedly connected to the piston rod of the driving cylinder (4).
3. A raw material screening device for asphalt production according to claim 1, characterized in that: A limiting tube (621) is arranged at one end of the limiting block (62) away from the connecting rod (61); a limiting rod (54) matching with the limiting tube (621) is arranged in the limiting cavity (51); the limiting rod (54) extends into the limiting tube (621) and is movably connected with the limiting tube (621); and the elastic spring (53) is sleeved outside the limiting rod (54) and the limiting tube (621).
4. A raw material screening device for asphalt production according to claim 1, characterized in that: It also comprises a first conveyor belt (2) and a second conveyor belt (3), wherein the output end of the first conveyor belt (2) extends deep into the rotary screen (12), and the input end of the second conveyor belt (3) is located below the rotary screen (12).
5. A raw material screening device for asphalt production according to claim 4, characterized in that: Material guide plates (21) are provided on both sides of the first conveyor belt (2) and the second conveyor belt (3).
6. A raw material screening device for asphalt production according to claim 5, characterized in that: A baffle (23) is provided on the first conveyor belt (2), a gap is left between the baffle (23) and the first conveyor belt (2), a lifting block (232) is provided on one side of the baffle (23), and a guide block (231) is provided on the other side of the baffle (23), a lifting screw (25) is rotatably connected in the guide plate (21) on one side of the first conveyor belt (2) along the vertical direction, a guide rod (24) is provided in the guide plate on the other side of the first conveyor belt (2) along the vertical direction, the lifting screw (25) is threadedly connected to the lifting block (232), and the guide rod (24) passes through the guide block (231) and is movably connected to the guide block (231).
7. A raw material screening device for asphalt production according to claim 5, characterized in that: Dust covers (22) are provided above the first conveyor belt (2) and the second conveyor belt (3).
8. A raw material screening device for asphalt production according to claim 1, characterized in that: The support frame (1) is provided with a dustproof box (11) which is sleeved on the outside of the rotating screen (12).
9. A raw material screening device for asphalt production according to claim 8, characterized in that: The dustproof box (11) is provided with a discharge port (111) at one end close to the discharge of the rotary screen (12), and the outer wall of the dustproof box (11) is provided with a discharge channel (112) located below the discharge port (111).