A crushing, impurity removal and drying integrated device for recycling asphalt paving waste

Abstract

The present invention discloses an integrated crushing, impurity removal and drying device for the regeneration of asphalt paving waste, and relates to the technical field of asphalt waste recycling equipment. The present invention comprises a crushing box, a drying box, a first air separation module and a second air separation module installed in a gradient from top to bottom, wherein the crushing box is used to crush the asphalt waste into small particles. Generally, the particle size after crushing is recommended to be between 100 mesh and 200 mesh. When the crushed small particles fall into the drying box from top to bottom, hot air is blown upward and the small particles downward, thereby removing moisture. The present invention crushes the asphalt waste containing impurities into small particles by crushing. According to the density relationship of the internal components: sand and gravel > asphalt > branches, the lightest wood impurities are separated by the first air separation module, and then fall into the second air separation module, thereby separating the sand and gravel from the asphalt to obtain relatively pure asphalt recycled material. This design solution more reasonably solves the problem of asphalt recovery in asphalt waste.

Description

Technical Field

[0001] The present invention relates to the technical field of asphalt waste recycling equipment, and in particular to a crushing, impurity removal and drying integrated device for regenerating asphalt pavement waste. Background Art

[0002] In recent years, my country's road construction has developed rapidly. Asphalt concrete pavement has been increasingly used in road construction of all levels due to its smooth surface, comfortable driving, wear resistance, environmental protection and noise reduction, short construction period, simple maintenance and repair, and recyclability. When the asphalt laid on the road is no longer used as a pavement, the useless asphalt becomes waste after asphalt paving. The main components of waste asphalt pavement materials are asphalt, gravel, and some tree branches. Therefore, how to separate asphalt from gravel and other impurities is a major measure that determines the recycling of asphalt. To this end, this application provides a crushing, impurity removal, and drying device for the recycling of asphalt paving waste. Summary of the Invention

[0003] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0004] A crushing, impurity removal and drying integrated device for recycling asphalt pavement waste, comprising:

[0005] Crushing box, used to crush waste asphalt into small particles;

[0006] The drying box is used to remove moisture from small particles and is connected and installed below the crushing box;

[0007] A first air separation module, which is used to remove wooden debris, includes a first rectangular air separation box, a first fan is installed at one end of the first air separation box, and the top is connected to the drying box discharge port, the first air separation box is located on the opposite side of the first fan and penetrates through and is connected to a triangular discharge hopper at the bottom, and a first speed control panel electrically connected to the first fan is also installed on the side wall of the first air separation box;

[0008] The second air separation module is used to separate sand and gravel from asphalt, and includes a second rectangular air separation box. A second fan is installed at one end of the second air separation box, and its top is connected to a triangular discharge hopper. The second air separation box is located on the opposite side of the second fan and is penetrated and has a discharge port at the bottom. A triangular folding plate fixed to the inner wall of the second air separation box is provided at the discharge port to form a sand and gravel outlet at the first position and an asphalt outlet at the second position. A second speed control panel electrically connected to the second fan is also installed on the side wall of the first air separation box.

[0009] Furthermore, the crushing box includes a box body, the top of the box body is connected and connected to a feed hopper, and the box body is sequentially installed with a coarse crushing unit and a fine crushing unit from top to bottom.

[0010] Furthermore, the coarse crushing unit includes three groups of coarse crushing rollers with bearings mounted on the box body. The three groups of coarse crushing rollers are arranged horizontally and one end extends outward through the box body. The coarse crushing rollers are fixed with first gears that are meshed with each other at the extended end. A servo motor is provided at the other end of the coarse crushing roller located in the middle position. The servo motor is mounted on the box body and the end of the output shaft is connected to the coarse crushing roller through a coupling.

[0011] Furthermore, the fine crushing unit includes two sets of fine crushing rollers with bearings installed on the box body, one end of the two sets of fine crushing rollers extends outward through the box body and a second gear is fixed to the extended end, and the two second gears are engaged with each other. A drive motor is provided at the other end of one of the fine crushing rollers, and the drive motor is installed on the outer wall of the box body and the output end is connected to the fine crushing roller through a coupling.

[0012] Furthermore, the box body, the first air separation box and the second air separation box are all connected by a frame, the bottom of the box body is higher than the top of the first air separation box and the top of the first air separation box is correspondingly configured with a plug-in rail, the drying box includes a connecting cone cylinder configured in a frustum shape, the large end portion of the connecting cone cylinder is fixed with an outer frame plate and docked with the bottom of the box body, the plug-in rail is configured in a U shape and the end wall is configured with a slot, one end of the connecting cone cylinder is fixed with a plug-in plate inserted into the slot, the other end of the connecting cone cylinder is fixed with a mounting plate, the mounting plate is fastened to the top of the first air separation box by screws, the outer frame plate is configured with a socket, and a heating rod is embedded in the socket.

[0013] Furthermore, a cone bucket is suspended in the connecting cone cylinder, and the side wall of the connecting cone cylinder is constructed with a spring cylinder perpendicular to its side surface, an oscillation spring is installed in the spring cylinder, and the other end of the oscillation spring is fixedly connected to the outer wall of the cone bucket, and the bottom of the cone bucket is constructed with multiple groups of first screening holes, and a first vibration motor is installed on the cone bucket.

[0014] Furthermore, a screening box is provided at the asphalt outlet, and the screening box is suspended below the asphalt outlet of the second air separation box by tension springs on all sides. The bottom of the second air separation box is constructed with second screening holes, and the aperture of the second screening holes is smaller than that of the first screening holes. A second vibration motor is installed at the bottom of the screening box.

[0015] Furthermore, a pair of baffles are fixed to the top of the box body, which are used to guide the asphalt waste to between the coarse crushing rollers.

[0016] Furthermore, a pair of guide plates are fixed on the box body at the unloading position of the coarse crushing rollers, which are used to guide the coarse crushing waste to between the fine crushing rollers.

[0017] The beneficial effects of the present invention are as follows:

[0018] The present invention uses a crushing method to crush asphalt waste containing impurities into small particles. According to the density relationship of the internal components: sand and gravel > asphalt > branches, the first air separation module is used to separate the lightest wood impurities, and then falls into the second air separation module, and then the sand and gravel are separated from the asphalt to obtain relatively pure asphalt recycled material. This design scheme more reasonably solves the problem of asphalt recovery in asphalt waste.

[0019] When installing the drying structure of the present invention, the connecting cone is inserted from one side of the insertion rail, so that the plug-in plate is inserted into the slot, and then the mounting plate is fastened to the first air separation box by screws. This installation method makes the connecting cone detachable, and at the same time, a heating rod is inserted into the socket of the outer frame plate. The heating rod is located on the outside of the connecting cylinder to avoid erosion of asphalt particles, and also to avoid the problem of melting of the asphalt particles due to overheating.

[0020] The present invention provides a screening box so that particles that fall into the screen and are smaller than the second screen hole will be separated out by the second screen hole under the vibration of the second vibration motor, thereby further improving the purity of the asphalt recycling material. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention from another angle;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention after removing the crushing box and the drying box;

[0024] Figure 4 It is a three-dimensional half-section view of the present invention;

[0025] Figure 5 This is a three-dimensional half-section schematic diagram of the crushing box and the drying box of the present invention

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the drying box of the present invention.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the screening box of the present invention;

[0028] Reference numerals: 1. Crushing box; 101. Box body; 102. Feed hopper; 103. Coarse crushing unit; 1031. Coarse crushing roller; 1032. First gear; 1033. Servo motor; 104. Fine crushing unit; 1041. Fine crushing roller; 1042. Second gear; 1043. Drive motor; 2. Drying box; 201. Connecting cone; 202. Outer frame plate; 203. Plug plate; 204. Mounting plate; 205. Socket; 206. Heating rod; 3. First air separation module; 301. First air separation box; 302. First fan; 303 , triangular discharge hopper; 304, first speed control panel; 4, second air separation module; 401, second air separation box; 402, second fan; 403, discharge port; 404, triangular folding plate; 405, sand and gravel outlet; 406, asphalt outlet; 407, second speed control panel; 5, frame; 6, rail; 7, cone bucket; 8, spring cylinder; 9, oscillation spring; 10, first screening hole; 11, first vibration motor; 12, screening box; 13, tension spring; 14, second screening hole; 15, second vibration motor; 16, baffle plate; 17, guide plate. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] This application provides a crushing, impurity removal and drying integrated device for the regeneration of asphalt pavement waste, which is mainly used to solve the problem of how to remove sand, gravel and wood debris from asphalt waste, and provides the following technical solutions. Figure 1-Figure 7 Give detailed instructions:

[0031] A crushing, impurity removal and drying integrated device for the regeneration of asphalt pavement waste comprises a crushing box 1, a drying box 2, a first air separation module 3 and a second air separation module 4 which are installed in a gradient from top to bottom, wherein the crushing box 1 is used to crush the asphalt waste into small particles, and the particle size after crushing is generally recommended to be between 100 mesh and 200 mesh. When the crushed small particles fall from top to bottom into the drying box 2, hot air flows upward and the small particles flow downward, so that moisture is removed and the drying effect is achieved. The first air separation box 301 is used to remove wooden debris, and the first air separation box 301 comprises a rectangular first air separation box 301, which is provided with a plurality of air separation modules. 01 is used as an air duct for screening small particles. At the same time, a first fan 302 is installed at one end of the first air separation box 301 and the top is connected to the discharge port of the drying box 2. The first air separation box 301 is located on the opposite side of the first fan 302 and is penetrated and connected to a triangular discharge hopper 303 at the bottom. A first speed control panel 304 electrically connected to the first fan 302 is also installed on the side wall of the first air separation box 301. When small particles fall through the drying box 2, the small particles falling under the action of the first fan 302 are blown up by the wind. Because the small particles contain sand, gravel, branches and asphalt, and the density relationship between the three is: sand> asphalt> branches, The first speed control panel 304 controls the wind speed to blow the wood particles out from the penetration point at the end, completing the separation of wood impurities, and the remaining particles enter the second air separation module 4. The second air separation module 4 includes a second rectangular air separation box 401. A second fan 402 is also installed at one end of the second air separation box 401, and its top is connected to the triangular discharge hopper 303. The triangular discharge hopper 303 is wide at the top and narrow at the bottom, which can ensure that there are not too many small particles falling at a single time, thereby affecting the air separation effect. At the same time, the second air separation box 401 is located on the opposite side of the second fan 402 and is penetrated and has a discharge port 403 at the bottom. A triangular folding plate 404 is provided fixed to the inner wall of the second air separation box 401 to form a sand and gravel outlet 405 at a first position and an asphalt outlet 406 at a second position. A second speed control panel 407 electrically connected to the second fan 402 is also installed on the side wall of the first air separation box 301. When small particles of wood impurities are removed and fall into the second air separation box 401, the wind speed of the second fan 402 is changed by adjusting the second speed control panel 407, so that heavy sand and gravel particles fall into the sand and gravel outlet 405, asphalt particles fall into the asphalt outlet 406, and any wood particles that may be mixed are blown out from the end.

[0032] In this application, asphalt waste containing impurities is crushed into small particles. According to the density relationship of the internal components: sand and gravel > asphalt > branches, the lightest wood impurities are separated by the first air separation module 3, and then fall into the second air separation module 4, and then the sand and gravel are separated from the asphalt to obtain relatively pure asphalt recycled material. This design scheme more reasonably solves the problem of asphalt recovery in asphalt waste.

[0033] like Figure 1 、 Figure 4 As shown, in order to explain the specific structure of the crushing box 1 in detail, the crushing box 1 includes a box body 101, and a feed hopper 102 is installed on the top of the box body 101. A coarse crushing unit 103 and a fine crushing unit 104 are installed in the box body 101 from top to bottom. The coarse crushing unit 103 is used to crush the asphalt waste into large particles, which then fall into the fine crushing unit 104 and are crushed into small particles by the fine crushing unit 104.

[0034] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown in the figure, in order to explain the specific structure of the coarse crushing unit 103 in detail, the coarse crushing unit 103 includes three sets of coarse crushing rollers 1031 with bearings mounted on the housing 101. The three sets of coarse crushing rollers 1031 are arranged horizontally and one end extends outward through the housing 101. The coarse crushing rollers 1031 are fixed with first gears 1032 that mesh with each other at the extended end. The other end of the coarse crushing roller 1031 located in the middle is provided with a servo motor 1033. The servo motor 1033 is mounted on the housing 101 and the end of the output shaft is connected to the coarse crushing roller 1031 through a coupling. The servo motor 1033 here rotates in the reverse direction after running forward for tens of seconds. The specific working principle is: when the asphalt waste falls between the coarse crushing rollers 1031, the servo motor 1033 drives the middle coarse crushing roller 1031 to rotate and then drives the coarse crushing rollers 1031 on both sides to rotate under the drive of the first gear 1032, so that one of the two crushing places (there are two crushing places between the three coarse crushing rollers 1031) is in a crushing state, and the other is in the role of adjusting the falling angle of the material, thereby preventing excessive waste from getting stuck in the coarse crushing roller 1031.

[0035] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, in order to explain the specific structure of the fine crushing unit 104 in detail, the fine crushing unit 104 includes two sets of fine crushing rollers 1041 with bearings installed on the box body 101, one end of the two sets of fine crushing rollers 1041 passes through the box body 101 and extends outward, and the extended end is fixed with a second gear 1042, and the two second gears 1042 are meshed with each other. The other end of one of the fine crushing rollers 1041 is provided with a drive motor 1043, and the drive motor 1043 is installed on the outer wall of the box body 101 and the output end is connected to the fine crushing roller 1041 through a coupling; when working, the drive motor 1043 drives one of the fine crushing rollers 1041 to rotate, and then transmits it to the other fine crushing roller 1041 through the second gear 1042, so that large particles are crushed into small particles that meet the requirements of air separation.

[0036] like Figure 1 、 Figure 5As shown, in order to further illustrate the specific structure of the drying box 2, the box body 101, the first air separation box 301, and the second air separation box 401 are all connected by a frame 5. The bottom of the box body 101 is higher than the top of the first air separation box 301 and the top of the first air separation box 301 is correspondingly configured with a plug-in rail 6. The drying box 2 includes a connecting cone 201 configured as a frustum. The large end of the connecting cone 201 is fixed with an outer frame plate 202 and docks with the bottom of the box body 101. The plug-in rail 6 is U-shaped and has a slot on the end wall. One end of the connecting cone 201 is fixed with a plug-in plate 203 inserted into the slot, and the other end of the connecting cone 201 is fixed with a mounting plate 204. The mounting plate 204 is fastened to the top of the first air separation box 301 by screws. A socket 205 is configured on the outer frame plate 202, and a heating rod 206 is embedded in the socket 205. When installing, the connecting cone 201 is connected from Figure 3 One side of the insertion rail 6 is inserted so that the plug-in board 203 is inserted into the slot, and then the mounting plate 204 is fastened to the first air separation box 301 by screws. This installation method makes the connecting cone 201 detachable, and at the same time, a heating rod 206 is inserted into the socket 205 of the outer frame plate 202. The heating rod 206 is located outside the connecting tube to avoid the erosion of asphalt particles, and also to avoid the problem of melting the asphalt particles due to overheating. It should be noted that the heating rod 206 is the same as the point heating rod 206 used in the mold.

[0037] like Figure 5 As shown, in some embodiments, in order to prevent large particles that do not meet the requirements from falling into the first air separation box 301, a cone bucket 7 is suspended in the connecting cone 201, and the side wall of the connecting cone 201 is constructed with a spring tube 8 perpendicular to its side surface, and an oscillation spring 9 is installed in the spring tube 8, and the other end of the oscillation spring 9 is fixedly connected to the outer wall of the cone bucket 7. The bottom of the cone bucket 7 is constructed with multiple groups of first screening holes 10, and a first vibration motor 11 is installed on the cone bucket 7. The vibration of the first vibration motor 11 drives the cone bucket 7 to vibrate, so that particles that meet the size fall through the first screening holes 10. When in use, the first vibration motor 11 drives the cone bucket 7 to shake, and the spring performs telescopic movement in the spring tube 8 to ensure the shaking of the cone bucket 7, so that particles that meet the requirements fall.

[0038] like Figure 1 、 Figure 4 、 Figure 7As shown, in some embodiments, in order to further ensure that impurities in the asphalt particles after air separation are reduced, a screening box 12 is provided at the asphalt outlet 406, and the screening box 12 is suspended below the asphalt outlet 406 of the second air separation box 401 by tension springs 13 on all sides. The bottom of the second air separation box 401 is constructed with second sieve holes 14, and the aperture of the second sieve holes 14 is smaller than that of the first sieve holes 10. A second vibration motor 15 is installed at the bottom of the screening box 12. During actual crushing, some sand and gravel particles are too small, and are then air-separated together with the asphalt particles (due to their small weight) during air separation. At this time, the screening box 12 is provided at the asphalt outlet 406, and the particles that fall into the asphalt that are smaller than the second sieve holes 14 will be separated out by the second sieve holes 14 under the vibration of the second vibration motor 15, thereby further improving the purity of the recycled asphalt.

[0039] like Figure 4 As shown, in some embodiments, a pair of baffles 16 are fixed to the top of the box body 101, which are used to guide the asphalt waste to between the coarse crushing rollers 1031. The baffles 16 are used in conjunction with the coarse crushing unit 103 to prevent the crushed material from entering the gap between the wall of the box body 101 and the coarse crushing rollers 1031.

[0040] like Figure 4 As shown, in some embodiments, a pair of guide plates 17 are fixed to the box body 101 at the unloading position of the coarse crushing roller 1031, which are used to guide the coarse crushing waste to between the fine crushing rollers 1041. The set guide plates 17 can avoid the problem that the crushed coarse particles cannot enter well between the two fine crushing rollers 1041.

[0041] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A crushing, impurity removal and drying integrated device for the regeneration of asphalt pavement waste, characterized in that: include: A crushing box (1) is used to crush the waste asphalt into small particles; A drying box (2), used for removing moisture from small particles, is connected and arranged below the crushing box (1); A first air separation module (3) is used to remove wooden debris, and comprises a first air separation box (301) in a rectangular shape, wherein a first fan (302) is installed at one end of the first air separation box (301) and the top is connected to a discharge port of a drying box (2), the first air separation box (301) is located on the opposite side of the first fan (302) and penetrates through the first fan (302) and is connected to a triangular discharge hopper (303) at the bottom, and a first speed control panel (304) electrically connected to the first fan (302) is also installed on the side wall of the first air separation box (301); A second air separation module (4), the second air separation module (4) is used to separate sand and gravel from asphalt, and comprises a second air separation box (401) in a rectangular shape, a second fan (402) being installed at one end of the second air separation box (401), the top of which is connected to a triangular discharge hopper (303), the second air separation box (401) being located on the opposite side of the second fan (402) and having a discharge port (403) at the bottom, a triangular folding plate (404) fixed to the inner wall of the second air separation box (401) being provided at the discharge port (403) to form a sand and gravel outlet (405) at a first position and an asphalt outlet (406) at a second position, and a second speed control panel (407) electrically connected to the second fan (402) being further installed on the side wall of the first air separation box (301); The crushing box (1) comprises a box body (101), the top of the box body (101) is connected to and installed with a feed hopper (102), and a coarse crushing unit (103) and a fine crushing unit (104) are sequentially installed in the box body (101) from top to bottom; The box body (101), the first air separation box (301), and the second air separation box (401) are all connected via a frame (5); the bottom of the box body (101) is higher than the top of the first air separation box (301), and the top of the first air separation box (301) is provided with a plug rail (6) corresponding thereto; the drying box (2) comprises a connecting cone (201) in a frustum-shaped configuration; the large end portion of the connecting cone (201) is fixed with an outer frame plate (202) and is connected to the box body (101). ), the insertion rail (6) is constructed in a U-shape and has a slot on its end wall, a plug-in board (203) inserted into the slot is fixed to one end of the connecting cone (201), a mounting plate (204) is fixed to the other end of the connecting cone (201), the mounting plate (204) is fastened to the top of the first air separation box (301) by screws, a socket (205) is constructed on the outer frame plate (202), and a heating rod (206) is embedded in the socket (205); A cone bucket (7) is suspended in the connecting cone cylinder (201), a spring cylinder (8) perpendicular to the side surface of the connecting cone cylinder (201) is constructed on the side wall of the connecting cone cylinder (201), an oscillation spring (9) is installed in the spring cylinder (8), the other end of the oscillation spring (9) is fixedly connected to the outer wall of the cone bucket (7), a plurality of first sieve holes (10) are constructed on the bottom of the cone bucket (7), and a first vibration motor (11) is installed on the top of the cone bucket (7).

2. The crushing, impurity removal and drying integrated device for asphalt pavement waste regeneration according to claim 1 is characterized in that: The coarse crushing unit (103) comprises three groups of coarse crushing rollers (1031) whose bearings are mounted on a housing (101). The three groups of coarse crushing rollers (1031) are arranged horizontally and one end of the coarse crushing rollers (1031) extends outward through the housing (101). A first gear (1032) meshing with each other is fixed at the extended end of the coarse crushing rollers (1031). A servo motor (1033) is provided at the other end of the coarse crushing roller (1031) located in the middle. The servo motor (1033) is mounted on the housing (101) and the end of the output shaft is connected to the coarse crushing roller (1031) via a coupling.

3. The crushing, impurity removal and drying integrated device for asphalt pavement waste regeneration according to claim 2 is characterized in that: The fine crushing unit (104) comprises two sets of fine crushing rollers (1041) whose bearings are mounted on a housing (101). One end of the two sets of fine crushing rollers (1041) passes through the housing (101) and extends outwards. A second gear (1042) is fixed to the extended end. The two second gears (1042) are meshed with each other. A driving motor (1043) is provided at the other end of one of the fine crushing rollers (1041). The driving motor (1043) is mounted on the outer wall of the housing (101), and an output end of the driving motor is connected to the fine crushing roller (1041) via a coupling.

4. The crushing, impurity removal and drying integrated device for asphalt pavement waste regeneration according to claim 1 is characterized in that: A screening box (12) is provided at the asphalt outlet (406), and the screening box (12) is suspended below the asphalt outlet (406) of the second air separation box (401) by tension springs (13) on all sides. The bottom of the second air separation box (401) is provided with a second screening hole (14), and the aperture of the second screening hole (14) is smaller than that of the first screening hole (10). A second vibration motor (15) is installed at the bottom of the screening box (12).

5. The crushing, impurity removal and drying integrated device for asphalt pavement waste regeneration according to claim 2 is characterized in that: A pair of baffles (16) are fixed to the top of the box (101) and are used to guide the asphalt waste to between the coarse crushing rollers (1031).

6. The crushing, impurity removal and drying integrated device for asphalt pavement waste regeneration according to claim 3 is characterized in that: The box (101) is fixed with a pair of guide plates (17) at the discharge position of the coarse crushing rollers (1031), which are used to guide the coarse crushing waste to between the fine crushing rollers (1041).

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