Highway construction waste recycling and screening device

Abstract

This invention discloses a screening and processing device for the recycling of highway construction waste, relating to the technical field of highway construction waste processing equipment. It includes a screening and processing box, with an impurity separation mechanism both inside and outside the box. A punching and unblocking mechanism is located outside the impurity separation mechanism. The impurity separation mechanism can separate dust, lightweight debris, and metallic impurities from the highway construction waste. This highway construction waste recycling and screening and processing device, by incorporating the impurity separation mechanism, utilizes a vacuum cleaner to absorb dust from the air inside the screening and processing box, facilitating the collection of lightweight debris from the highway construction waste. A drive motor drives a rotating magnetic roller to rotate, which adsorbs metallic impurities from the highway construction waste on the vibrating screen, achieving efficient simultaneous separation of lightweight debris and metallic impurities, thus improving the processing efficiency of the screening and processing device.

Description

Technical Field

[0001] This invention relates to the technical field of highway construction waste treatment equipment, specifically a screening and treatment device for the recycling of highway construction waste. Background Technology

[0002] During highway construction and maintenance, a large amount of waste asphalt mixture, concrete blocks and gravel are generated. These wastes need to be properly screened and cleaned using screening equipment. After that, they can be used as recycled aggregates for roadbed backfilling and pavement base courses, realizing resource recycling and conforming to the concept of green construction.

[0003] Existing screening and processing devices for the recycling of highway construction waste suffer from clogging of the screening channels in practical applications. Highway construction waste often contains highly viscous waste asphalt and mud, which easily adhere to the screen surface during screening, causing clogging of the screen holes. This not only reduces screening efficiency but also requires frequent manual cleaning, increasing labor intensity. The clogging problem is exacerbated, especially in low-temperature environments where the asphalt becomes more viscous. Furthermore, in addition to aggregates of different particle sizes, the waste also contains lightweight impurities such as plastic fragments and wood blocks, as well as metallic impurities such as reinforcing bars and scrap iron wire. Existing devices can only achieve particle size classification and cannot simultaneously and efficiently separate lightweight impurities and metallic impurities, resulting in insufficient purity of the recycled aggregates, affecting the quality of recycling, failing to meet the technical requirements for recycled materials in highway engineering, and reducing the processing efficiency of the screening and processing device.

[0004] Combining the above problems, we find that existing highway construction waste recycling screening and processing devices are difficult to avoid simultaneously when in use. Even if they can solve these problems, they require external tools, thus failing to achieve the desired effect. Therefore, we propose a highway construction waste recycling screening and processing device. Summary of the Invention

[0005] The purpose of this invention is to provide a screening and processing device for the recycling of highway construction waste, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a screening and processing device for the recycling of highway construction waste, comprising a screening and processing box, wherein an impurity separation mechanism is provided both inside and outside the screening and processing box, and a punching and unblocking mechanism is provided outside the impurity separation mechanism; The impurity separation mechanism is capable of separating dust, lightweight debris, and metallic impurities from highway construction waste. The stamping and unclogging mechanism can perform stamping and cleaning of sticky debris in the mesh of the screening screen.

[0007] Preferably, the impurity separation mechanism includes a heating and ventilation fan, the outer surface of which is fixedly connected to the inner wall of the screening and processing box. A vibrating screen is slidably connected inside the screening and processing box. A first fixed box is fixedly connected to the left side of the screening and processing box. A metal impurity collection box is fixedly connected to the bottom surface of the first fixed box. A first electric push rod is fixedly connected to the inner wall of the first fixed box. A push frame is fixedly connected to the telescopic end of the first electric push rod. A drive motor is fixedly connected to one side of the push frame. The bottom surface of the push frame and the bottom surface of the drive motor are both in contact with the upper surface of the vibrating screen. A rotating magnetic roller is fixedly connected to the output end of the drive motor. The rotating magnetic roller is rotatably connected to the inside of the push frame. The outer surface of the rotating magnetic roller is in contact with the upper surface of the metal impurity collection box. A second fixed box is fixedly connected to one side of the screening and processing box. A vacuum cleaner is fixedly connected to the inner wall of the second fixed box. A pull frame is slidably connected inside the second fixed box. An impurity ventilation filter is fixedly connected to the inner wall of the pull frame.

[0008] Preferably, two extension plates are fixedly connected to both sides of the screening and processing box, and a support leg is fixedly connected to the bottom surface of each set of extension plates.

[0009] Preferably, the bottom ends of the two sets of support legs are fixedly connected to a support base plate, and a reinforcing ring is fixedly connected to the outer surface of each set of support legs. The bottom surface of each set of reinforcing rings is fixedly connected to the upper surface of the support base plate.

[0010] Preferably, a pulling plate is fixedly connected to the upper surface of the pulling frame, the bottom surface of the pulling plate is in contact with the upper surface of the second fixed box, one side of the pulling plate is in contact with one side of the screening and processing box, and a pulling handle is fixedly connected to the upper surface of the pulling plate.

[0011] Preferably, the stamping unblocking mechanism includes a third fixed box, the bottom surface of which is fixedly connected to the upper surface of the screening and processing box. A hydraulic telescopic rod is fixedly connected to the inner wall of the third fixed box, and a push plate is fixedly connected to the telescopic end of the hydraulic telescopic rod. The push plate is slidably connected inside the third fixed box. Two sets of tension springs and equally spaced stamping rods are fixedly connected to the bottom surface of the push plate. The telescopic ends of the two sets of tension springs are fixedly connected to a stamping plate. Each stamping rod is slidably connected inside the stamping plate. A fourth fixed box is fixedly connected to one side of the screening and processing box. A scraping electric push rod is fixedly connected to the inner wall of the fourth fixed box. A scraping plate is fixedly connected to the telescopic end of the scraping electric push rod. The upper surface of the scraping plate is in contact with the bottom surface of the stamping plate.

[0012] Preferably, an installation frame is provided above the screening and processing box, and a feed hopper is fixedly connected to the upper surface of the installation frame.

[0013] Preferably, the feed hopper has two connecting screws internally threaded together, and each connecting screw has a lifting hook fixedly connected to its top end.

[0014] Preferably, the bottom surface of the mounting frame is fixedly connected to two sets of extension connecting rods, and the bottom end of each set of extension connecting rods is fixedly connected to a baffle.

[0015] Preferably, the outer surfaces of the two sets of extended connecting rods are jointly fitted with a pre-treatment screen, the pre-treatment screen is slidably connected to the inside of the screening box, the upper surface of each baffle is in contact with the bottom surface of the pre-treatment screen, and two sets of vibration motors are fixedly connected to the bottom surface of the pre-treatment screen.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention, by incorporating an impurity separation mechanism, allows for the convenient intake and heating of air into the screening chamber by fixing a heating fan to one side of the output end of the screening chamber. This creates a bottom-up flow of hot air within the chamber, and a temperature sensor within the chamber adjusts the heating and blowing power of the fan. A second fixing box is located on one side of the pre-treatment screen within the screening chamber, facilitating the attachment of a vacuum cleaner to absorb dust from the air. Furthermore, a sliding frame and impurity ventilation filter within the second fixing box transport lightweight impurities blown by the hot air into the frame for filtration, thus facilitating the removal of lightweight debris from highway construction waste. The dust from highway construction waste is collected and pre-treated through a screen in the screening box before being screened again on a vibrating screen. A first electric push rod moves a push frame onto the vibrating screen to contact the construction waste. A drive motor on one side of the push frame drives a rotating magnetic roller to adsorb metal impurities from the waste on the vibrating screen. The rotating magnetic roller then moves to a metal impurity collection box, where scrapers scrape the adsorbed metal impurities into a sliding collection box. This process simultaneously and efficiently separates lightweight debris and metal impurities, improving the processing efficiency of the screening device. This invention, by setting up a stamping and unblocking mechanism, utilizes a hydraulic telescopic rod fixed inside a third fixed box to easily drive a push plate to move up and down with the stamping rods. Two sets of tension springs are used below the push plate to mount a stamping plate that can pass through the stamping rods. Since highway construction waste often contains highly viscous waste asphalt and mud, which easily adhere to the surface of the vibrating screen during screening, causing blockage of the screen holes, the hydraulic telescopic rod drives the stamping plate downwards to press against the upper surface of the vibrating screen. This causes multiple stamping rods corresponding to the screen holes to pass through the stamping plate and insert into the screen holes, facilitating the stamping and unblocking of the screen holes. The screen can also press and process road construction waste on the vibrating screen, with some of it adsorbed under the pressing plate. By moving the pushing plate with the pressing plate to the top, the scraping electric push rod in the fourth fixed box can drive the scraping plate to scrape away the debris on the bottom of the pressing plate. The rotating magnetic roller adsorbs metal impurities while adsorbing the sticky waste asphalt and mud in the road construction waste. The scraping structure in the metal impurity collection box then transports the road construction waste debris to the collection box, reducing the clogging problem of the screening and processing device and further improving the processing efficiency of the screening and processing device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the screening and processing box of the present invention; Figure 3 This is a bottom view of the pretreatment screen structure of the present invention; Figure 4 This is a rear view structural schematic diagram of the impurity ventilation filter screen of the present invention; Figure 5 This is a bottom view of the stamping plate of the present invention; Figure 6 This is a bottom view of the vibrating screen structure of the present invention; Figure 7 This is a rear view schematic diagram of the rotating magnetic roller structure of the present invention.

[0018] In the picture: 1. Screening and processing box; 2. Impurity separation mechanism; 201. Extension plate; 202. Support leg; 203. Support base plate; 204. Reinforcing ring; 205. Heating and ventilation fan; 206. Vibrating screen; 207. First fixed box; 208. Metal impurity collection box; 209. First electric push rod; 210. Push frame; 211. Drive motor; 212. Rotating magnetic roller; 213. Vacuum cleaner; 214. Pull frame; 215. Impurity ventilation filter; 216. Pull plate; 17. Pull handle; 218. Second fixed box; 3. Stamping and unblocking mechanism; 301. Third fixed box; 302. Hydraulic telescopic rod; 303. Push plate; 304. Tension spring; 305. Stamping rod; 306. Stamping plate; 307. Fourth fixed box; 308. Scraping electric push rod; 309. Scraper plate; 4. Mounting frame; 5. Feed hopper; 6. Lifting hook; 7. Extension connecting rod; 8. Baffle plate; 9. Pre-treatment screen; 10. Vibrating motor; 11. Connecting screw. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1-7 The present invention provides a technical solution: a screening and processing device for the recycling of highway construction waste, including a screening and processing box 1, an impurity separation mechanism 2 is provided both inside and outside the screening and processing box 1, and a punching and unblocking mechanism 3 is provided outside the impurity separation mechanism 2. The impurity separation unit 2 is capable of separating dust, lightweight debris and metallic impurities from highway construction waste.

[0021] As a further definition of the impurity separation mechanism 2 of the present invention, the impurity separation mechanism 2 includes a heating ventilation fan 205, which is a ventilation fan capable of heating the passing air. The outer surface of the heating ventilation fan 205 is fixedly connected to the inner wall of the screening and processing box 1. A vibrating screen 206 is slidably connected inside the screening and processing box 1. A first fixed box 207 is fixedly connected to the left side of the screening and processing box 1. A metal impurity collection box 208 is fixedly connected to the bottom surface of the first fixed box 207. A first electric push rod 209 is fixedly connected to the inner wall of the first fixed box 207. A push frame 210 is fixedly connected to the telescopic end of the first electric push rod 209. One end of the push frame 210... A drive motor 211 is fixedly connected to the side. The bottom surface of the push frame 210 and the bottom surface of the drive motor 211 are in contact with the upper surface of the vibrating screen 206. A rotating magnetic roller 212 is fixedly connected to the output end of the drive motor 211. The rotating magnetic roller 212 is rotatably connected to the inside of the push frame 210. The outer surface of the rotating magnetic roller 212 is in contact with the upper surface of the metal impurity collection box 208. A second fixed box 218 is fixedly connected to one side of the screening and processing box 1. A vacuum cleaner 213 is fixedly connected to the inner wall of the second fixed box 218. A pull frame 214 is slidably connected inside the second fixed box 218. An impurity ventilation filter 215 is fixedly connected to the inner wall of the pull frame 214.

[0022] Please see Figure 1 and Figure 2 Two extension plates 201 are fixedly connected to both sides of the screening box 1. Each set of extension plates 201 is fixedly connected to a support leg 202 on its bottom surface. The support leg 202 fixed by the two sets of extension plates 201 forms the support structure of the screening device, thereby enabling the screening device to be stably supported in the required position.

[0023] Please see Figure 1 and Figure 2 The bottom ends of the two sets of support legs 202 are fixedly connected to the support base plate 203. The outer surface of each set of support legs 202 is fixedly connected to the reinforcing ring 204. The bottom surface of each set of reinforcing ring 204 is fixedly connected to the upper surface of the support base plate 203. By using the support base plate 203 fixed to the bottom ends of the two sets of support legs 202, the reinforcing ring 204 is fixed at the connection between the two sets of support legs 202 and the support base plate 203, thereby improving the connection stability between the two sets of support legs 202 and the support base plate 203.

[0024] Please see Figure 1 and Figure 4A pull plate 216 is fixedly connected to the upper surface of the pull frame 214. The bottom surface of the pull plate 216 is in contact with the upper surface of the second fixed box 218. One side of the pull plate 216 is in contact with one side of the screening and processing box 1. A pull handle 217 is fixedly connected to the upper surface of the pull plate 216. By manually holding the pull handle 217, the pull plate 216 can be used to pull the pull frame 214, so as to pull the pull frame 214 out of the second fixed box 218 and to collect and process the lightweight debris inside the pull frame 214.

[0025] The specific implementation method of this embodiment is as follows: In use, firstly connect the heating fan 205, vibrating screen 206, first electric push rod 209, and drive motor 211 to the power supply. When it is necessary to use this screening and processing device to process highway construction waste for recycling, the support structure of the screening and processing device is first formed by the support legs 202 fixed by the two sets of extension plates 201, so that the screening and processing device can be stably supported in the required position. The support base plate 203 fixed to the bottom end of the two sets of support legs 202 is fixed at the connection between the two sets of support legs 202 and the support base plate 203 by the reinforcing ring 204, thereby improving the support of the two sets of support legs 202. The connection stability between the support leg 202 and the supporting base plate 203 is ensured. Then, a heating fan 205 is fixed to one side of the output end of the screening chamber 1 to facilitate air intake and heating within the screening chamber 1, allowing hot air to flow upwards within the chamber. A temperature sensor within the screening chamber 1 is used to adjust the heating and blowing power of the heating fan 205. A second fixing box 218 is installed on one side of the pre-treatment screen 9 within the screening chamber 1, facilitating the fixing of a vacuum cleaner 213 within the second fixing box 218 to absorb dust from the air within the screening chamber 1. The second fixing box 218 also features a sliding mechanism. The pull frame 214 and impurity ventilation filter 215 are used to transport light impurities blown by hot air in the screening box 1 to the pull frame 214 for filtration by the impurity ventilation filter 215. The pull frame 214 is easily pulled out of the second fixed box 218 by manually holding the pull handle 217 and using the pull plate 216, facilitating the collection and processing of light impurities within the pull frame 214. This allows for the convenient collection of light impurities from highway construction waste and dust from highway construction waste, and the waste is then pre-treated by the screening screen 9 in the screening box 1. Highway construction waste enters the vibrating screen 206 for further screening. At this time, the first electric push rod 209 drives the push frame 210 to move onto the vibrating screen 206 and contact the highway construction waste. The drive motor 211 on one side of the push frame 210 drives the rotating magnetic roller 212 to rotate. The rotating magnetic roller 212 can adsorb metal impurities in the highway construction waste on the vibrating screen 206. The rotating magnetic roller 212 moves to the metal impurity collection box 208, where the scraper inside the metal impurity collection box 208 scrapes the metal impurities adsorbed outside the rotating magnetic roller 212 into the sliding collection box inside the metal impurity collection box 208.

[0026] Example 2: Please refer to Figure 1 , Figure 2 and Figure 5The present invention provides a technical solution: a screening and processing device for the recycling of highway construction waste. The present invention makes corresponding improvements to the technical problems mentioned in the background art. The stamping and unblocking mechanism 3 can perform stamping and cleaning of sticky debris in the mesh of the screening screen.

[0027] As a further definition of the stamping unblocking mechanism 3 of the present invention, the stamping unblocking mechanism 3 includes a third fixed box 301. The bottom surface of the third fixed box 301 is fixedly connected to the upper surface of the screening and processing box 1. A hydraulic telescopic rod 302 is fixedly connected to the inner wall of the third fixed box 301. A push plate 303 is fixedly connected to the telescopic end of the hydraulic telescopic rod 302. The push plate 303 is slidably connected inside the third fixed box 301. Two sets of tension springs 304 are fixedly connected to the bottom surface of the push plate 303. The stamping rods 305 are arranged at equal intervals. The telescopic ends of two sets of tension springs 304 are fixedly connected to the stamping plate 306. Each stamping rod 305 is slidably connected to the inside of the stamping plate 306. A fourth fixed box 307 is fixedly connected to one side of the screening and processing box 1. A scraping electric push rod 308 is fixedly connected to the inner wall of the fourth fixed box 307. A scraping plate 309 is fixedly connected to the telescopic end of the scraping electric push rod 308. The upper surface of the scraping plate 309 is in contact with the bottom surface of the stamping plate 306.

[0028] Please see Figure 1 and Figure 3 An installation frame 4 is provided above the screening and processing box 1. A feed hopper 5 is fixedly connected to the upper surface of the installation frame 4. The installation frame 4 on the screening and processing box 1 is used to facilitate the installation of the feed hopper 5 on the upper part of the screening and processing box 1, so as to facilitate the addition of highway construction waste that needs to be screened into the screening and processing device.

[0029] Please see Figure 1 and Figure 3 The feed hopper 5 has two connecting screws 11 inside, and each connecting screw 11 is fixedly connected to a lifting hook 6 at the top. The two connecting screws 11 are used to facilitate the installation of the lifting hook 6 into the feed hopper 5, so that the feed hopper 5 of the screening and processing device can be lifted and transported by a crane.

[0030] Please see Figure 3 Two sets of extension connecting rods 7 are fixedly connected to the bottom surface of the mounting frame 4. Each set of extension connecting rods 7 is fixedly connected to a baffle 8 at its bottom end. The baffle 8 is connected and fixed to the bottom of the mounting frame 4 using the two sets of extension connecting rods 7, which facilitates the positioning and installation of other structures.

[0031] Please see Figure 3The outer surfaces of the two sets of extension connecting rods 7 are jointly fitted with a pre-treatment screen 9. The pre-treatment screen 9 is slidably connected to the inside of the screening and processing box 1. The upper surface of each baffle 8 is in contact with the bottom surface of the pre-treatment screen 9. Two sets of vibration motors 10 are fixedly connected to the bottom surface of the pre-treatment screen 9. Each vibration motor 10 has an adjustable eccentric block installed at each end of the rotor shaft. The motor obtains the excitation force by the centrifugal force generated by the high-speed rotation of the shaft and the eccentric blocks. The pre-treatment screen 9 can be installed into the inside of the screening and processing box 1 through the two sets of extension connecting rods 7 and the two sets of baffles 8. The two sets of vibration motors 10 fixed to the bottom surface of the pre-treatment screen 9 facilitate the pre-screening of highway construction waste through the pre-treatment screen 9.

[0032] The specific implementation method of this embodiment is as follows: In use, first connect the hydraulic telescopic rod 302, the scraping electric push rod 308, and the vibration motor 10 to the power supply. When it is necessary to use this screening and processing device to process highway construction waste for recycling, first use the mounting frame 4 set on the screening and processing box 1 to easily install the feeding hopper 5 on top of the screening and processing box 1, so as to easily add the highway construction waste to be screened into the screening and processing device. Then, use the two connecting screws 11 to easily install the lifting hook 6 onto the feeding hopper 5, so as to easily use a crane to lift the feeding hopper 5 of the screening and processing device. Two sets of extension connecting rods 7 are used to connect and fix the baffle 8 to the bottom of the mounting frame 4, which facilitates the positioning and installation of other structures. The two sets of extension connecting rods 7 and two sets of baffles 8 allow the pre-treatment screen 9 to be installed inside the screening box 1. Two sets of vibrating motors 10 fixed to the bottom of the pre-treatment screen 9 facilitate the pre-screening of highway construction waste through the pre-treatment screen 9. Then, the hydraulic telescopic rod 302 fixed inside the third fixed box 301 allows the push plate 303 to move up and down with the punching rod 305. Two sets of tension springs 304 are used under the push plate 303. A stamping plate 306, through which the stamping rods 305 can pass, is installed below the vibrating screen 206. Because the highway construction waste contains highly adhesive waste asphalt and mud, these materials easily adhere to the surface of the vibrating screen 206 during screening, causing blockage of the screen holes. To facilitate this, the hydraulic telescopic rod 302 drives the stamping plate 306 downwards to press the upper surface of the vibrating screen 206. This causes multiple stamping rods 305, corresponding to the screen holes of the vibrating screen 206, to pass through the stamping plate 306 and insert into the screen holes of the vibrating screen 206, facilitating the stamping and opening of the screen holes. This also allows for the removal of the highway construction waste from the vibrating screen 206. A portion of the material is adsorbed under the stamping plate 306 during the stamping process. By moving the stamping plate 306 to the top with the push plate 303, the scraping electric push rod 308 in the fourth fixed box 307 drives the scraping plate 309 to scrape away the debris on the bottom surface of the stamping plate 306. Meanwhile, the rotating magnetic roller 212 adsorbs the metal impurities while also adsorbing the sticky waste asphalt and mud in the road construction waste. The scraping structure in the metal impurity collection box 208 then transports the road construction waste debris into the collection box, thereby reducing the clogging problem of the screening and processing device.

[0033] Example 3: Specifically, when this highway construction waste recycling screening and processing device is working / in use: First, connect the heating fan 205, vibrating screen 206, first electric push rod 209, and drive motor 211 to the power supply. When the screening device is needed to process highway construction waste for recycling, the support structure of the screening device is first formed by the support legs 202 fixed by the two sets of extension plates 201, so that the screening device can be stably supported in the required position. The support base plate 203 fixed to the bottom of the two sets of support legs 202 is fixed with the reinforcing ring 204 at the connection between the two sets of support legs 202 and the support base plate 203, thereby improving the connection stability between the two sets of support legs 202 and the support base plate 203. Then, the heating fan 205 is fixed on one side of the output end of the screening box 1. To facilitate the intake and heating of air into the screening chamber 1, hot air flows upwards within the chamber. A temperature sensor within the screening chamber 1 is used to adjust the heating and blowing power of the heating fan 205. A second fixed box 218 is installed on one side of the pre-treatment screen 9 within the screening chamber 1, allowing a vacuum cleaner 213 to be fixed inside for absorbing dust from the air. A sliding pull frame 214 and an impurity ventilation filter 215 within the second fixed box 218 transport lightweight impurities blown by the hot air into the pull frame 214 for filtration by the impurity ventilation filter 215. The process is completed by manually holding the pull handle. 217, to facilitate the use of the pull plate 216 to lift the pull frame 214, to facilitate the pull frame 214 in the second fixed box 218 to facilitate the collection and processing of lightweight debris in the pull frame 214, thereby facilitating the collection of lightweight debris in highway construction waste and dust in highway construction waste. After being screened by the pre-treatment screen 9 in the screening and processing box 1, the highway construction waste enters the vibrating screen 206 for further screening. At this time, the first electric push rod 209 drives the push frame 210 to move onto the vibrating screen 206 to contact the highway construction waste. The drive motor 211 on one side of the push frame 210 drives the rotating magnetic roller 212 to rotate, so that the rotating magnetic roller 212 can be used to rotate. The vibrating screen 206 adsorbs metal impurities from highway construction waste. A rotating magnetic roller 212 moves to a metal impurity collection box 208, where a scraper scrapes the adsorbed metal impurities from outside the magnetic roller 212 into a sliding collection box. In operation, the hydraulic telescopic rod 302, the electric scraping push rod 308, and the vibrating motor 10 are first connected to a power source. When using this screening device to process highway construction waste for recycling, the mounting frame 4 on the screening box 1 is used to easily install the feed hopper 5 above the screening box 1, facilitating the addition of the highway construction waste to be screened.Two connecting screws 11 are used to facilitate the installation of the lifting hook 6 onto the feed hopper 5, thereby enabling the use of a crane to lift the feed hopper 5 of the screening device. Two sets of extension connecting rods 7 are used to connect and fix the baffle 8 to the bottom of the mounting frame 4, facilitating the positioning and installation of other structures. The two sets of extension connecting rods 7 and the two sets of baffles 8 allow the pre-treatment screen 9 to be installed inside the screening box 1. Furthermore, two sets of vibrating motors 10 fixed to the bottom surface of the pre-treatment screen 9 facilitate the installation of... The pre-treatment screen 9 pre-screens the highway construction waste. Then, the hydraulic telescopic rod 302 fixed inside the third fixed box 301 easily drives the push plate 303 to move up and down with the punching rod 305. Two sets of tension springs 304 are used to install the punching plate 306, which can pass through the punching rod 305, below the push plate 303. Because the highway construction waste contains highly adhesive waste asphalt and mud, these materials easily adhere to the surface of the vibrating screen 206 during the screening process, causing the vibrating screen... The screen holes of 206 are blocked, so that the hydraulic telescopic rod 302 can drive the stamping plate 306 to move downward and squeeze the upper surface of the vibrating screen 206. This causes multiple stamping rods 305 corresponding to the screen holes of the vibrating screen 206 to pass through the stamping plate 306 and insert into the screen holes of the vibrating screen 206, so as to facilitate the stamping and opening of the screen holes of the vibrating screen 206. It can also stamp and process the road construction waste on the vibrating screen 206, and a portion of it is adsorbed under the stamping plate 306. The push plate 303 moves the stamping plate 306 along with the screen hole. When moved to the top, the scraper plate 309, driven by the electric scraper pusher 308 within the fourth fixed box 307, scrapes away debris from the bottom surface of the stamping plate 306. Meanwhile, the rotating magnetic roller 212, while adsorbing metallic impurities, also adsorbs the sticky waste asphalt and mud from the road construction waste. The scraping structure within the metal impurity collection box 208 then transports the road construction waste debris into its collection box, reducing clogging issues in the screening and processing device.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A highway construction waste recycling screening device, comprising a screening treatment box (1), characterized in that: The screening processing box (1) is equipped with an impurity separation mechanism (2) both inside and outside, and a stamping unblocking mechanism (3) is provided outside the impurity separation mechanism (2). The impurity separation mechanism (2) is capable of separating dust, light impurities and metal impurities in highway construction waste; The stamping and unblocking mechanism (3) can perform stamping and cleaning of sticky debris in the mesh of the screening screen.

2. The highway construction waste recycling screening treatment device according to claim 1, characterized in that: The impurity separation mechanism (2) includes a heating and ventilation fan (205), the outer surface of which is fixedly connected to the inner wall of the screening and processing box (1). A vibrating screen (206) is slidably connected inside the screening and processing box (1). A first fixed box (207) is fixedly connected to the left side of the screening and processing box (1). A metal impurity collection box (208) is fixedly connected to the bottom surface of the first fixed box (207). A first electric push rod (209) is fixedly connected to the inner wall of the first fixed box (207). A push frame (210) is fixedly connected to the telescopic end of the first electric push rod (209). A drive motor (211) is fixedly connected to one side of the push frame (210). The bottom surface of the screen (206) and the bottom surface of the drive motor (211) are in contact with the upper surface of the vibrating screen (206). The output end of the drive motor (211) is fixedly connected to a rotating magnetic roller (212). The rotating magnetic roller (212) is rotatably connected to the inside of the push frame (210). The outer surface of the rotating magnetic roller (212) is in contact with the upper surface of the metal impurity collection box (208). One side of the screening and processing box (1) is fixedly connected to a second fixed box (218). The inner wall of the second fixed box (218) is fixedly connected to a vacuum cleaner (213). The inside of the second fixed box (218) is slidably connected to a pull frame (214). The inner wall of the pull frame (214) is fixedly connected to an impurity ventilation filter (215).

3. The highway construction waste recycling screening device according to claim 1, characterized in that: Two extension plates (201) are fixedly connected to both sides of the screening and processing box (1), and a support leg (202) is fixedly connected to the bottom surface of each set of extension plates (201).

4. The highway construction waste recycling and screening treatment device according to claim 3, characterized in that: The bottom ends of the two sets of support legs (202) are fixedly connected to a support base plate (203). Each set of support legs (202) has a reinforcing ring (204) fixedly connected to its outer surface. The bottom surface of each set of reinforcing rings (204) is fixedly connected to the upper surface of the support base plate (203).

5. The highway construction waste recycling and screening device according to claim 2, characterized in that: A pull plate (216) is fixedly connected to the upper surface of the pull frame (214). The bottom surface of the pull plate (216) is in contact with the upper surface of the second fixed box (218). One side of the pull plate (216) is in contact with one side of the screening and processing box (1). A pull handle (217) is fixedly connected to the upper surface of the pull plate (216).

6. The highway construction waste recycling and screening treatment device according to claim 1, characterized in that: The stamping unblocking mechanism (3) includes a third fixed box (301), the bottom surface of which is fixedly connected to the upper surface of the screening and processing box (1). A hydraulic telescopic rod (302) is fixedly connected to the inner wall of the third fixed box (301). A push plate (303) is fixedly connected to the telescopic end of the hydraulic telescopic rod (302). The push plate (303) is slidably connected to the inside of the third fixed box (301). Two sets of tension springs (304) and stamping rods (304) arranged at equal distances are fixedly connected to the bottom surface of the push plate (303). 05), the telescopic ends of the two sets of tension springs (304) are fixedly connected to the stamping plate (306), and each stamping rod (305) is slidably connected to the inside of the stamping plate (306). A fourth fixed box (307) is fixedly connected to one side of the screening and processing box (1). A scraping electric push rod (308) is fixedly connected to the inner wall of the fourth fixed box (307). A scraping plate (309) is fixedly connected to the telescopic end of the scraping electric push rod (308). The upper surface of the scraping plate (309) is in contact with the bottom surface of the stamping plate (306).

7. The highway construction waste recycling screening device according to claim 1, characterized in that: An installation frame (4) is provided above the screening and processing box (1), and a feed hopper (5) is fixedly connected to the upper surface of the installation frame (4).

8. The highway construction waste recycling screening device according to claim 7, characterized in that: The feed hopper (5) has two connecting screws (11) internally threaded, and each connecting screw (11) has a lifting hook (6) fixedly connected to its top end.

9. The highway construction waste recycling and screening treatment device according to claim 7, characterized in that: The bottom surface of the mounting frame (4) is fixedly connected with two sets of extension connecting rods (7), and the bottom end of each set of extension connecting rods (7) is fixedly connected with a baffle (8).

10. The highway construction waste recycling screening device according to claim 9, characterized in that: The outer surfaces of the two sets of extension connecting rods (7) are covered with a pre-treatment screen (9). The pre-treatment screen (9) is slidably connected to the inside of the screening and processing box (1). The upper surface of each baffle (8) is in contact with the bottom surface of the pre-treatment screen (9). The bottom surface of the pre-treatment screen (9) is fixedly connected with two sets of vibration motors (10).

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