Waste asphalt concrete recycling treatment device

Abstract

The invention relates to the technical field of waste asphalt concrete recycling, in particular to a waste asphalt concrete recycling treatment device which comprises a crushing unit and an air screening unit, a mixed material is subjected to air screening through an air screening frame, the particle size of the mixed material is screened through a screening frame, and in the whole machining process, the waste asphalt concrete can be recycled. The main components of the powder collected in the collecting frame comprise sand powder and asphalt powder and are used for being mixed with other materials to form asphalt sand for use, the main components of the particles meeting the requirements of the discharging equipment comprise asphalt particles and stone particles and are used for being mixed with other particle materials to form an asphalt cold patch material for use, and the recycling rate of waste asphalt is increased.

Description

Technical Field

[0001] The invention relates to the technical field of recycling waste asphalt concrete, and in particular to a waste asphalt concrete recycling processing device. Background Art

[0002] Asphalt pavement will age after a long period of use, resulting in reduced performance and the need for repair or even renovation. Both repair and renovation will produce a large amount of waste asphalt, requiring a storage site for the waste asphalt. If the waste asphalt is not recycled in time, it will lead to material waste, environmental pollution, and a low material utilization rate. The recycling technologies for waste asphalt mainly include: thermal regeneration recycling technology, mechanical recycling and reuse technology, and chemical recycling and reuse technology, of which the main focus here is on mechanical recycling and reuse technology.

[0003] The traditional mechanical recycling and reuse technology is to crush the washed and drained waste asphalt concrete, and then screen it to obtain particles of a certain specification range, which can be used for roadbed construction or added with new asphalt to make recycled asphalt concrete. However, the mixed material particles after crushing and screening contain a large amount of powder material. Small particles of powder material can be recycled and reused to make asphalt sand, which can repair places with smaller gaps. Large particles of asphalt concrete particles can be recycled and reused to make asphalt cold patch material, which can only repair places with obvious gaps. When the powder material and the granular material are not separated, the amount of auxiliary materials to be added in the subsequent recycling and reuse will be difficult to determine due to the unclear particle size grading. Moreover, when large and small particles are mixed together, they cannot be used to prepare asphalt sand, but can only be mixed with other granular materials to form asphalt cold patch material for use, resulting in a decrease in its recycling rate. Summary of the invention

[0004] In view of the above problems, the embodiment of the present application provides a waste asphalt concrete recycling and processing device to solve the technical problems of reduced recycling rate of waste asphalt and high cost of changing its component ratio in the related art. In order to achieve the above purpose, the embodiment of the present application provides the following technical solutions.

[0005] A waste asphalt concrete recycling and processing device according to an embodiment of the present application includes a crushing unit and an air screen unit. The air screen unit is arranged on the crushing unit to separate the soil from the crushed asphalt particles; the crushing unit includes a rectangular box, a feeding piece is fixedly installed on the upper end of the rectangular box, and two crushing rollers 1 and two crushing rollers 2 are rotatably connected to the inner end of the rectangular box. The crushing rollers 1 and 2 are alternately arranged from left to right, and the crushing rollers 1 and 2 cooperate with each other. A gear 1 is fixedly installed at the front end of the crushing roller 1, and a gear 2 is fixedly installed at the front end of the crushing roller 2. The gear 1 is meshed with the gear 2. A motor 1 is fixedly installed at the front end of the rectangular box through a motor seat, and the output shaft of the motor 1 is fixedly connected to the gear 1 on the right side through a coupling. A discharge trough plate is fixedly installed at the front end of the lower side of the rectangular box, and the bottom of the rectangular box is inclined, and the inclined surface gradually downward from the back to the front.

[0006] According to an embodiment of the present invention, the material discharge part includes a material discharge trough, the material discharge trough is fixedly installed on the upper end of the rectangular box, a feeding screw is symmetrically rotated on the left and right ends of the lower inner end of the material discharge trough, gear three and gear four are fixedly installed on the front ends of the feeding screws on the left and right sides respectively, gear three and gear four are meshed with each other, sprocket one is fixed on the front end of gear three, sprocket two is fixedly installed on the front end of gear two on the left side, and sprocket one and sprocket two are connected through a toothed chain belt one.

[0007] According to an embodiment of the present invention, a crushing ring plate is evenly fixedly installed on the outer end of the crushing roller along its linear direction, a crushing ring groove matching with the crushing ring plate is evenly opened on the outer end of the crushing roller along its linear direction, the crushing ring groove and the crushing ring plate are arranged alternately, the structure of the crushing roller two is the same as that of the crushing roller one, and the crushing roller one matches with the crushing roller two.

[0008] According to an embodiment of the present invention, the guide frame includes a guide roller, and a guide group is arranged in the rectangular box and directly below the crushing roller one and the crushing roller two. Each guide group consists of guide rollers evenly arranged from top to bottom. The guide rollers are rotatably connected to the rectangular box. Gears five are fixedly installed at the front ends of the guide rollers below the crushing roller one on the left and below the crushing roller two on the right. Gears six are fixedly installed at the front ends of the guide rollers below the crushing roller two on the left and below the crushing roller one on the right. Adjacent gears five are meshed with gears six. Sprockets three are fixedly installed at the front ends of the gears five on the same side. The sprockets three on the same side are connected through a toothed chain belt two for transmission. Sprockets four are fixedly installed at the front ends of the sprockets three on the upper side. Sprockets five are fixedly installed at the front ends of the gears one on the left and two on the right. The sprockets five and the adjacent sprockets four are connected through a toothed chain belt three for transmission.

[0009] According to an embodiment of the present invention, the collecting rack includes a powder box, and rectangular through holes are symmetrically provided on the left and right sides of the rectangular box, and rectangular powder boxes are fixedly installed on the rectangular through holes. The lower end of the powder box and the side close to the rectangular box are set to be inclined, and the inclined surface gradually rises toward the side of the rectangular box. Exhaust holes are provided on the side of the powder box away from the rectangular box, and a grid plate is fixedly installed on the exhaust hole. A filter cotton plate is fixedly installed on the side of the grid plate facing the rectangular box. A discharge hole is provided below the powder box, and a collection box is clamped at the lower end of the discharge hole, and a scraper rack is provided on the powder box.

[0010] According to an embodiment of the present invention, the wind screen frame includes a fixed pipe box, which is fixedly installed in the middle of the inner end of the rectangular box, and air outlets are fixedly installed on the left and right side walls of the fixed pipe box and between the guide rollers, and the end of the air outlet is rotatably connected to a rotating cover plate through a pin shaft, and a torsion spring is sleeved on the pin shaft, one end of the torsion spring is fixedly connected to the rotating cover plate, and the other end of the torsion spring is fixedly connected to the air outlet, the corresponding air outlets on the left and right sides are connected by a connecting pipe, and the connecting pipes are fixedly connected by a control pipe, an air intake pipe is fixedly installed at the rear end of the fixed pipe box, an air pump is fixedly installed at the rear end of the air intake pipe, and the front end of the air intake pipe is fixedly connected to the uppermost control pipe.

[0011] According to an embodiment of the present invention, the inner end of the exhaust tube is evenly rotatably connected to an exhaust ring, the inner ring wall of the exhaust ring is evenly fixedly installed with fan blades, the ends of the fan blades in the same exhaust ring are commonly fixedly connected to a round head rod, the outer ring wall of the exhaust ring is evenly fixedly installed with gear blocks along its circumference, and the gear blocks on adjacent exhaust rings are meshed with each other.

[0012] According to an embodiment of the present invention, both left and right sides of the inner end of the control tube are rotatably connected with partition blocks via a pin shaft, a torsion spring is sleeved on the pin shaft, one end of the torsion spring is fixedly connected to the partition block, and the other end of the torsion spring is fixedly connected to the control tube.

[0013] According to an embodiment of the present invention, the scraper frame includes a sliding bracket, which is connected to the front and rear inner ends of the powder box in a sliding manner. There are two sliding brackets, which are respectively arranged on the inclined surface of the powder box and the filter cotton plate. A scraper column is rotatably connected to the sliding bracket, and scraper grooves are evenly opened on the outer ring wall of the scraper column. Traction groups are fixedly installed on the front and rear sides of the sliding bracket, and each traction group is composed of a traction steel wire rope that is symmetrical up and down. Winding columns are rotatably connected to the left and right sides of the lower end of the powder box, and the traction steel wire ropes on the upper and lower sides slide through the powder box and are fixedly connected to the corresponding winding columns. Vortex springs are fixedly installed on the left and right sides of the lower end of the powder box, and the ends of the spiral springs are fixedly connected to the corresponding winding columns.

[0014] According to an embodiment of the present invention, the screening frame includes a screening bowl, the screening bowl is rotatably connected to the bottom of a rectangular box, a plurality of evenly arranged screening holes are provided on the screening bowl, an extension column is fixedly installed at the lower end of the screening bowl, a bevel gear three is fixedly installed at the lower end of the extension column, a bevel gear four meshing with bevel gear three is rotatably connected to the lower end of the rectangular box, a sprocket seven is fixedly installed at the rear end of the bevel gear four, a sprocket eight is fixedly installed at the rear end of the rightmost and lowest guide roller, sprocket seven and sprocket eight are connected through a toothed chain belt four for transmission, a discharging port is provided on the screening bowl, a blocking plate with sieve holes is hinged in the discharging port, a traction wire rope two is fixedly connected to the end of the blocking plate, a threaded rod is threadedly connected to the extension column, and the traction wire rope two passes through the screening bowl and the extension column and is finally wound and fixedly connected with the threaded rod.

[0015] It can be seen from the above technical solutions that the present invention has the following advantages: 1. In the present invention, the waste asphalt blocks are crushed by crushing rollers 1 and 2, the mixed materials are screened by wind through a wind screen frame to ensure that the dust completely enters the collecting frame, and the particle size of the mixed materials is screened by a screening frame, so that the mixed raw materials that meet the requirements are discharged from the equipment through the discharge trough along the inclined bottom, and the dust attached to the collecting frame is scraped off by a scraper frame. During the whole processing process, the powder collected in the collecting frame mainly includes sand powder and asphalt powder, which are used to be mixed with other materials to form asphalt sand for use, and the particles discharged from the equipment that meet the requirements mainly include asphalt particles and stone particles, which are used to be mixed with other granular materials to form asphalt cold patch materials for use, thereby improving the recycling rate of waste asphalt.

[0016] 2. In the present invention, through the cooperation of gear three and gear four, the feeding screws on the left and right sides rotate in opposite directions. Compared with the situation where the waste asphalt falls directly under the action of gravity, the amount and frequency of waste asphalt discharge are reduced, the crushing pressure of crushing roller one and crushing roller two is reduced, and all waste asphalt is ensured to be crushed.

[0017] 3. In the present invention, by making two adjacent guide rollers rotate towards each other, it is ensured that the uppermost guide roller collects the crushed particle powder between the two guide rollers for it to fall, and the remaining guide rollers drive the particles that have passed through the wind screen and moved toward the collecting frame to continue to fall from between the two guide rollers until they fall onto the screening frame. During the entire wind screening process, the wind screening path of the particle powder is extended by the wind blowing at each level and the rotation of the guide rollers, preventing some particles with smaller volumes from gradually moving toward the collecting frame and entering the collecting frame due to the influence of the wind force in the falling path. In addition, the guide rollers ensure the space for the particles to fall and the distance from the particles to the air outlet, avoiding the weakening of the wind force due to the particles moving away from the air outlet, and reducing the degree of dust blowing off the surface of the particles.

[0018] 4. In the present invention, the sliding bracket moves toward one side of the collection box to scrape off the dust on the inclined surface and the surface of the filter cotton plate. After the scraping is completed, no force is applied to the winding column, and the reaction force of the spiral spring is used to return the sliding bracket to its initial position.

[0019] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by a waste asphalt concrete recycling and treatment device provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 A schematic diagram of a main-view stereoscopic structure provided according to an embodiment of the present invention is shown.

[0022] Figure 2 A schematic diagram of a rear-view stereoscopic structure provided according to an embodiment of the present invention is shown.

[0023] Figure 3 A schematic diagram of the main stereoscopic structure of the blanking part and the guide frame is shown.

[0024] Figure 4 A rear view stereoscopic structural schematic diagram of the wind screen frame and the screening bowl is shown.

[0025] Figure 5 A schematic diagram of the rear plan structure of the screening frame is shown.

[0026] Figure 6 A schematic diagram of the main plan structure of the screening frame is shown.

[0027] Figure 7 A schematic diagram of a main cross-sectional plane structure provided according to an embodiment of the present invention is shown.

[0028] Figure 8 Shows Figure 7 A local enlarged view of location N.

[0029] Fig. 9 Shows Figure 7 A local enlarged view of point M.

[0030] Fig.10 Shows Figure 7 A local enlarged view of point E.

[0031] Fig.11 Shows Figure 7 A partial enlarged view of point F.

[0032] Fig.12 Shows Figure 7 A local enlarged view of point G.

[0033] Fig.13 A schematic diagram of the right side sectional plan structure of the exhaust ring and the gear block on the left is shown.

[0034] The above drawings include the following reference numerals: 1. Crushing unit; 11. Rectangular box; 12. Feeding piece; 121. Feeding chute; 122. Feeding screw; 123. Gear three; 124. Gear four; 125. Sprocket one; 126. Sprocket two; 127. Toothed chain belt one; 13. Crushing roller one; 131. Crushing ring plate; 132. Crushing ring groove; 14. Crushing roller two; 15. Gear one; 16. Gear two; 17. Motor one; 18. Discharge chute plate; 2. Wind screen unit; 21. Guide frame; 211. Guide roller; 212. Gear 5; 213. Gear 6; 214. Sprocket 3; 215. Toothed chain belt 2; 216. Sprocket 4; 217. Sprocket 5; 218. Toothed chain belt 3; 22. Wind screen frame; 221. Fixed pipe box; 222. Exhaust bag; 2221. Exhaust ring; 2222. Fan blade; 2223. Round head rod; 2224. Tooth block; 223. Rotation cover plate; 224, torsion spring 1; 225, connecting pipe; 226, control pipe; 2261, partition block; 2262, torsion spring 2; 227, air inlet pipe; 228, air pump; 23, collection rack; 231, powder box; 232, exhaust hole; 234, grid plate; 235, filter cotton plate; 236, discharge hole; 237, collection box; 24, scraper rack; 241, sliding bracket; 242, scraper column; 243 , scraper trough; 244, traction wire rope one; 245, winding column; 246, scroll spring; 25, screening frame; 251, screening bowl; 252, screening hole; 253, extension column; 254, bevel gear three; 255, bevel gear four; 256, sprocket seven; 257, sprocket eight; 258, toothed chain belt four; 259, discharge port; 260, blocking plate; 261, traction wire rope two; 262, threaded rod. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0036] See also Figure 1 , Figure 2 and Figure 3A waste asphalt concrete recycling and processing device comprises a crushing unit 1 and an air screen unit 2. The air screen unit 2 is arranged on the crushing unit 1 to separate the soil and asphalt particles in the crushed asphalt particles; the crushing unit 1 comprises a rectangular box 11, a feeding piece 12 is fixedly installed on the upper end of the rectangular box 11, two crushing rollers 13 and two crushing rollers 14 are rotatably connected to the inner end of the rectangular box 11, the crushing rollers 13 and the crushing rollers 14 are alternately arranged from left to right, the crushing rollers 13 and the crushing rollers 14 are matched with each other, a gear 15 is fixedly installed at the front end of the crushing roller 13, a gear 2 16 is fixedly installed at the front end of the crushing roller 14, the gear 15 is meshed with the gear 2 16, a motor 17 is fixedly installed at the front end of the rectangular box 11 through a motor seat, the output shaft of the motor 17 is fixedly connected to the gear 15 on the right side through a coupling, and a discharge trough plate 18 is fixedly installed at the front end of the lower side of the rectangular box 11, The bottom of the rectangular box 11 is inclined, and the inclined surface gradually goes downward from the back to the front; the wind screen unit 2 includes a guide frame 21, which is arranged in the rectangular box 11 and directly below the crushing roller 13 and the crushing roller 2 14, and a wind screen frame 22 is fixedly installed in the middle of the inner end of the rectangular box 11, and a collection frame 23 is symmetrically fixedly installed at the left and right ends of the rectangular box 11, and a scraper frame 24 is arranged on the collection frame 23, and a screening frame 25 is arranged at the bottom of the rectangular box 11; first, the waste asphalt blocks after washing and draining are The material 12 is fed into the feeder, and as the material 12 enters between the middle crushing roller 13 and the crushing roller 2 14, the middle crushing roller 13 and the crushing roller 2 14 rotate in opposite directions (the middle crushing roller 13 rotates clockwise, and the middle crushing roller 2 14 rotates counterclockwise) under the drive of the gear 15, the gear 2 16 and the motor 17, thereby driving the waste asphalt to move between the crushing roller 13 and the crushing roller 2 14 on both sides for crushing. The mixed material after crushing falls downward into the guide The mixed material is screened by the wind screen frame 22, so that the dust in the mixed material is blown to the collecting frame 23. Under the guidance of the guide frame 21, the mixed material falls from the middle of the guide frame 21, and passes through multiple wind screens to ensure that the dust completely enters the collecting frame 23. The mixed material that passes through the wind screen continues to move downward to the screening frame 25, so as to be screened according to the particle size of the mixed material. During the screening process, the mixed raw materials that meet the requirements are discharged along the inclined bottom of the rectangular box 11 through the discharge trough plate 18, and the dust attached to the collecting frame 23 is scraped off by the scraper frame 24. The large particles of asphalt concrete remaining in the screening frame 25 are discharged and sent to the unloading piece 12 again for crushing, wind screening and screening. The powder collected in the collecting frame 23 mainly includes sand powder and asphalt powder, which is used to be mixed with clay and water to form asphalt sand for use. The particles discharged from the equipment and meeting the requirements mainly include asphalt particles and stone particles, which are used to be mixed with additives and isolation agents to form asphalt cold patch materials for use.

[0037] See also Figure 2 and Figure 3 The material discharge member 12 includes a material discharge trough 121, the upper end of the rectangular box 11 is fixedly installed with the material discharge trough 121, the lower inner end of the material discharge trough 121 is symmetrically rotated with a feeding screw 122, the front ends of the feeding screws 122 on the left and right sides are respectively fixedly installed with a gear three 123 and a gear four 124, the gear three 123 is meshed with the gear four 124, the front end of the gear three 123 is fixed with a sprocket one 125, the front end of the left gear two 16 is fixedly installed with a sprocket two 126, and the sprocket The first 125 and the second sprocket 126 are connected by a toothed chain belt 127; the feeding screw 122 on the left side is driven to rotate by the belt transmission. Under the cooperation of the gear three 123 and the gear four 124, the feeding screws 122 on the left and right sides rotate in opposite directions. Compared with the situation where the waste asphalt directly falls under the action of gravity, the amount and frequency of waste asphalt discharge are reduced, the crushing pressure of the crushing roller 13 and the crushing roller 2 14 is reduced, and it is ensured that all the waste asphalt is crushed.

[0038] See also Figure 3 The outer end of the crushing roller 13 is evenly fixed with a crushing ring plate 131 along its linearity, and the outer end of the crushing roller 13 is evenly opened along its linearity to match the crushing ring plate 131. The crushing ring groove 132 and the crushing ring plate 131 are arranged alternately. The structure of the crushing roller 14 is the same as that of the crushing roller 13. The crushing roller 13 matches the crushing roller 14; the crushing ring groove 132 on the crushing roller 13 matches the crushing ring plate on the crushing roller 14 to crush the waste asphalt.

[0039] See also Figure 1 and Figure 3The guide frame 21 includes a guide roller 211. A guide group is provided in the rectangular box 11 and directly below the crushing roller 1 13 and the crushing roller 2 14. Each guide group consists of guide rollers 211 evenly arranged from top to bottom. The guide rollers 211 are rotatably connected to the rectangular box 11. A gear 5 212 is fixedly installed at the front end of the guide rollers 211 below the crushing roller 1 13 on the left and below the crushing roller 2 14 on the right. A gear 6 213 is fixedly installed at the front end of the guide rollers 211 below the crushing roller 2 14 on the left and below the crushing roller 1 13 on the right. The adjacent gears 5 212 are meshed with the gears 6 213. The front ends of the gears 5 212 on the same side are fixedly installed with sprockets 3 214. The sprockets 3 214 on the same side are connected together. Through the toothed chain belt 215 transmission connection, the front end of the upper sprocket wheel 3 214 is fixedly installed with a sprocket wheel 4 216, the front end of the gear wheel 1 15 on the left and the gear wheel 2 16 on the right are fixedly installed with a sprocket wheel 5 217, and the sprocket wheel 5 217 and the adjacent sprocket wheel 4 216 are connected through the toothed chain belt 3 218 transmission connection; the gear wheel 5 212 is meshed with the gear wheel 6 213, so that the two adjacent guide rollers 211 rotate towards each other, and the uppermost guide roller 211 concentrates the crushed particle powder to fall between the two guide rollers 211, and the remaining guide rollers 211 drive the particles after passing through the wind screen to continue to fall from between the two guide rollers 211 until they fall onto the screening frame 25, and the small particles are blown by the wind to move toward the side of the collecting frame 23.

[0040] See also Figure 2 , Figure 8 and Fig.10 The collecting rack 23 includes a powder box 231. Rectangular through holes are symmetrically provided on the left and right sides of the rectangular box 11. A rectangular powder box 231 is fixedly installed on each of the rectangular through holes. An inclined surface is provided at the lower end of the powder box 231 and close to the rectangular box 11. The inclined surface gradually rises toward the rectangular box 11. An exhaust hole 232 is provided on the side of the powder box 231 away from the rectangular box 11. A mesh plate 234 is fixedly installed on the exhaust hole 232. A filter cotton plate 235 is fixedly installed on the side of the mesh plate 234 facing the rectangular box 11. A discharge hole 236 is provided below the powder box 231, and a collecting box 237 is clamped at the lower end of the discharge hole 236. A scraper rack 24 is provided on the powder box 231; the dust is filtered by cooperating with the filter cotton plate 235 and the mesh plate 234, so that the power gas serving as the wind screen can be smoothly discharged from the exhaust hole 232, and the dust attached to the inclined surface and the surface of the filter cotton plate 235 can be scraped off by the scraper rack 24, so that the dust can smoothly fall into the collecting box 237 for collection.

[0041] See also Figure 4 , Figure 5 , Fig.11 and Fig.12The wind screen frame 22 includes a fixed tube box 221, a fixed tube box 221 is fixedly installed in the middle of the inner end of the rectangular box 11, and a gas outlet 222 is fixedly installed on the left and right side walls of the fixed tube box 221 and located between the guide rollers 211. The end of the gas outlet 222 is rotatably connected to a rotating cover plate 223 through a pin shaft, and a torsion spring 224 is sleeved on the pin shaft. One end of the torsion spring 224 is fixedly connected to the rotating cover plate 223, and the other end of the torsion spring 224 is fixedly connected to the gas outlet 222. The gas outlets 222 corresponding to the left and right sides are connected by a connecting pipe 225. The connecting pipe 22 5 are fixedly connected by a control pipe 226, an air inlet pipe 227 is fixedly installed at the rear end of the fixed pipe box 221, an air pump 228 is fixedly installed at the rear end of the air inlet pipe 227, and the front end of the air inlet pipe 227 is fixedly connected to the uppermost end of the control pipe 226; the gas is introduced into the uppermost control pipe 226 through the air pump 228, and then the control pipe 226 is filled, the passage between the control pipe 226 and the connecting pipe 225 is opened, the gas enters and fills the connecting pipe 225 and the air outlet cylinder 222, the air outlet cylinder 222 is opened, and the gas is discharged to screen the crushed mixed material.

[0042] See also Fig.11 and Fig.13 The inner end of the air outlet cylinder 222 is evenly rotatably connected to an exhaust ring 2221, and the inner ring wall of the exhaust ring 2221 is evenly fixedly installed with fan blades 2222. The ends of the fan blades 2222 in the same exhaust ring 2221 are commonly fixedly connected with a round head rod 2223. The outer ring wall of the exhaust ring 2221 is evenly fixedly installed with tooth blocks 2224 along its circumference, and the tooth blocks 2224 on adjacent exhaust rings 2221 are meshed; the gas drives the fan blades 2222 to rotate, thereby driving the exhaust ring 2221 to rotate. With the cooperation of the tooth blocks 2224, it is ensured that all the exhaust rings 2221 rotate synchronously, so that all the fan blades 2222 rotate to screen the crushed mixed materials. When the air pump 228 stops working, the rotating cover plate 223 is no longer subjected to the pressure of the gas in the air outlet cylinder 222, and the mouth of the air outlet cylinder 222 is quickly closed under the drive of the torsion spring 224 to prevent dust from entering the air outlet cylinder 222.

[0043] See also Figure 8 , Fig. 9 and Fig.10The scraper frame 24 includes a sliding bracket 241, and the sliding bracket 241 is connected to the front and rear inner ends of the powder box 231 in a sliding cooperation manner. The number of the sliding brackets 241 is two, and the two sliding brackets 241 are respectively arranged at the inclined surface of the powder box 231 and the filter cotton plate 235. A scraper column 242 is rotatably connected to the sliding bracket 241, and a scraper groove 243 is evenly opened on the outer ring wall of the scraper column 242. A traction group is fixedly installed on both the front and rear sides of the sliding bracket 241, and each traction group is composed of a traction wire rope 244 symmetrically arranged above and below. The left and right sides of the lower end of the powder box 231 are rotatably connected to the winding column 245, and the traction wire ropes 244 on the upper and lower sides slide through the powder box 231. The powder box 231 is fixedly connected to the corresponding winding column 245, and the left and right sides of the lower end of the powder box 231 are fixedly installed with a spiral spring 246, and the end of the spiral spring 246 is fixedly connected to the corresponding winding column 245; the traction wire rope 244 is wound by rotating the winding column 245, thereby driving the sliding bracket 241 to move to the side of the collecting box 237, and the dust on the inclined surface and the surface of the filter cotton plate 235 is scraped off. After the scraping is completed, the winding column 245 is no longer applied with force. Driven by the spiral spring 246, the sliding bracket 241 returns to its initial position. When the winding column 245 rotates, one of the traction wire ropes 244 is unwound, and the other traction wire rope 244 is wound up.

[0044] See also Figure 4 , Figure 5 , Figure 6 and Figure 7The screening frame 25 includes a screening bowl 251, the bottom of the rectangular box 11 is rotatably connected with the screening bowl 251, and the screening bowl 251 is provided with a plurality of evenly arranged screening holes 252, the lower end of the screening bowl 251 is fixedly installed with a protruding column 253, and the lower end of the protruding column 253 is fixedly installed with a bevel gear 3 254, the lower end of the rectangular box 11 is rotatably connected with a bevel gear 4 255 meshing with the bevel gear 3 254, and the rear end of the bevel gear 4 255 is fixedly installed with a sprocket 7 256, and the rear end of the rightmost and lower guide roller 211 is fixedly installed with a sprocket 8 257, and the sprocket 7 256 and the sprocket 8 257 are connected through a toothed chain belt 4 258. A discharge port 259 is provided on the screening bowl 251, and a blocking plate 260 with sieve holes is hinged in the discharge port 259. A traction wire rope 261 is fixedly connected to the end of the blocking plate 260. A threaded rod 262 is threadedly connected to the extension column 253. The traction wire rope 261 passes through the screening bowl 251 and the extension column 253 and is finally wound and fixedly connected with the threaded rod 262. Under the transmission of the sprocket wheel 7 256, the sprocket wheel 8 257 and the toothed chain belt 4 258, the screening bowl 251 is driven to rotate through the guide roller 211, so as to screen the crushed mixed raw materials. After the screening is completely completed, the traction wire rope 261 no longer generates traction on the blocking plate 260 by rotating the threaded rod 262, so that the blocking plate 260 no longer blocks the discharge port 259. At this time, the mixed material blocks that do not meet the standards are discharged from the screening bowl 251 and mixed with the remaining waste asphalt for the next crushing and screening.

[0045] Working principle of the present invention: Step 1: First, the waste asphalt blocks after cleaning and draining are sent to the unloading part 12 and then fall down, and the crushing roller 13 and the crushing roller 2 14 crush the waste asphalt blocks.

[0046] Step 2: The mixed material after the crushing process falls downward into the guide frame 21, and is screened multiple times by the wind screen frame 22, so that the dust in the mixed material is blown to the collection frame 23 for collection.

[0047] Step 3: The mixed material that has passed the air screen continues to move downward to the screening frame 25, so as to be screened according to the particle size of the mixed material. During the screening process, the mixed raw materials that meet the requirements are discharged from the equipment along the inclined bottom through the discharge chute 18, and finally the mixed material in the screening frame 25 is discharged from the equipment and sent to the unloading frame again for crushing, air screening and screening.

[0048] In the description of the present invention, it is necessary to understand that the terms "center", "middle", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "end", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In addition, the terms "first", "second", "number one", "number two", "one", "two" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0050] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A waste asphalt concrete recycling and processing device, characterized in that , comprising a crushing unit (1) and an air screen unit (2), wherein the air screen unit (2) is arranged on the crushing unit (1) and is used to separate the soil from the crushed asphalt particles; The crushing unit (1) comprises a rectangular box (11), a material discharge piece (12) is fixedly mounted on the upper end of the rectangular box (11), two crushing rollers (13) and two crushing rollers (14) are rotatably connected to the inner end of the rectangular box (11), the crushing rollers (13) and the crushing rollers (14) are alternately arranged from left to right, the crushing rollers (13) and the crushing rollers (14) are matched with each other, a gear (15) is fixedly mounted on the front end of the crushing roller (13), a gear (16) is fixedly mounted on the front end of the crushing roller (14), the gear (15) and the gear (16) are meshed, a motor (17) is fixedly mounted on the front end of the rectangular box (11) through a motor seat, the output shaft of the motor (17) is fixedly connected to the gear (15) on the right side through a coupling, a material discharge slot plate (18) is fixedly mounted on the front end of the lower side of the rectangular box (11), and the bottom of the rectangular box (11) is inclined, and the inclined surface gradually decreases from the back to the front; The wind screen unit (2) comprises a guide frame (21), which is arranged in the rectangular box (11) and directly below the first crushing roller (13) and the second crushing roller (14), a wind screen frame (22) is fixedly installed in the middle of the inner end of the rectangular box (11), a collecting frame (23) is symmetrically fixedly installed at the left and right ends of the rectangular box (11), a scraping frame (24) is arranged on the collecting frame (23), and a screening frame (25) is arranged at the bottom of the rectangular box (11).

2. The waste asphalt concrete recycling and processing device according to claim 1 is characterized by: The material discharge member (12) comprises a material discharge trough (121), the material discharge trough (121) is fixedly mounted on the upper end of the rectangular box (11), a material feeding screw (122) is symmetrically rotated on the left and right sides of the lower inner end of the material discharge trough (121), a gear three (123) and a gear four (124) are fixedly mounted on the front ends of the material feeding screws (122) on the left and right sides respectively, the gear three (123) and the gear four (124) are meshed, a sprocket wheel one (125) is fixed on the front end of the gear three (123), a sprocket wheel two (126) is fixedly mounted on the front end of the gear two (16) on the left side, and the sprocket wheel one (125) and the sprocket wheel two (126) are connected to each other through a toothed chain belt one (127).

3. The waste asphalt concrete recycling and processing device according to claim 1 is characterized in that: The outer end of the crushing roller one (13) is evenly fixedly provided with a crushing ring plate (131) along its linear direction, and the outer end of the crushing roller one (13) is evenly provided with a crushing ring groove (132) matching with the crushing ring plate (131) along its linear direction, and the crushing ring groove (132) and the crushing ring plate (131) are arranged in an alternating manner, and the structure of the crushing roller two (14) is the same as that of the crushing roller one (13), and the crushing roller one (13) matches with the crushing roller two (14).

4. The waste asphalt concrete recycling and processing device according to claim 1 is characterized by: The guide frame (21) comprises a guide roller (211). A guide group is arranged in the rectangular box (11) and directly below the first crushing roller (13) and the second crushing roller (14). Each guide group consists of guide rollers (211) evenly arranged from top to bottom. The guide rollers (211) are rotatably connected to the rectangular box (11). A gear five (212) is fixedly installed at the front end of the guide rollers (211) below the first crushing roller (13) on the left and below the second crushing roller (14) on the right. A gear five (212) is fixedly installed at the front end of the guide rollers (211) below the second crushing roller (14) on the left and below the first crushing roller (13) on the right. A gear six (213) is fixedly installed, the adjacent gear five (212) meshes with the gear six (213), the front end of the gear five (212) on the same side is fixedly installed with a sprocket three (214), the sprocket three (214) on the same side are connected through a toothed chain belt two (215), the front end of the sprocket three (214) on the upper side is fixedly installed with a sprocket four (216), the front ends of the gear one (15) on the left side and the gear two (16) on the right side are fixedly installed with a sprocket five (217), and the sprocket five (217) and the adjacent sprocket four (216) are connected through a toothed chain belt three (218).

5. The waste asphalt concrete recycling and processing device according to claim 1 is characterized by: The collecting rack (23) comprises a powder box (231), rectangular through holes are symmetrically provided on the left and right sides of the rectangular box (11), and rectangular powder boxes (231) are fixedly mounted on the rectangular through holes. The lower end of the powder box (231) and the side close to the rectangular box (11) are arranged to be inclined, and the inclined surface gradually rises toward the side of the rectangular box (11). An exhaust hole (232) is provided on the side of the powder box (231) away from the rectangular box (11), a mesh plate (234) is fixedly mounted on the exhaust hole (232), and a filter cotton plate (235) is fixedly mounted on the side of the mesh plate (234) facing the rectangular box (11). A discharge hole (236) is provided below the powder box (231), and a collecting box (237) is clamped at the lower end of the discharge hole (236). A scraper rack (24) is provided on the powder box (231).

6. The waste asphalt concrete recycling and processing device according to claim 4 is characterized by: The wind screen frame (22) comprises an air storage box (221), the air storage box (221) is fixedly installed in the middle of the inner end of the rectangular box (11), and air outlet tubes (222) are fixedly installed on the left and right side walls of the air storage box (221) and located between the guide rollers (211), and the end of the air outlet tube (222) is rotatably connected to a rotating cover plate (223) via a pin shaft, and a torsion spring (224) is sleeved on the pin shaft, and one end of the torsion spring (224) is fixedly connected to the rotating cover plate (223), and the torsion spring (224) is fixedly connected to the rotating cover plate (223). The other end of one (224) is fixedly connected to the air outlet cylinder (222), the air outlet cylinders (222) corresponding to the left and right sides are connected via a connecting pipe (225), the connecting pipes (225) are fixedly connected via a control pipe (226), an air intake pipe (227) is fixedly installed at the rear end of the air storage box (221), an air pump (228) is fixedly installed at the rear end of the air intake pipe (227), and the front end of the air intake pipe (227) is fixedly connected to the control pipe (226) at the uppermost side.

7. The waste asphalt concrete recycling and processing device according to claim 6 is characterized by: The inner end of the air outlet tube (222) is evenly rotatably connected to an exhaust ring (2221), the inner ring wall of the exhaust ring (2221) is evenly fixedly mounted with fan blades (2222), the ends of the fan blades (2222) in the same exhaust ring (2221) are commonly fixedly connected with a round head rod (2223), the outer ring wall of the exhaust ring (2221) is evenly fixedly mounted with tooth blocks (2224) along its circumference, and the tooth blocks (2224) on adjacent exhaust rings (2221) are meshed with each other.

8. The waste asphalt concrete recycling and processing device according to claim 5 is characterized by: The scraper frame (24) comprises a sliding bracket (241), and the sliding bracket (241) is connected to the front and rear inner ends of the powder box (231) in a sliding manner. The number of the sliding brackets (241) is two, and the two sliding brackets (241) are respectively arranged at the inclined surface of the powder box (231) and the filter cotton plate (235). The sliding bracket (241) is rotatably connected to a scraper column (242), and the outer ring wall of the scraper column (242) is evenly provided with scraper grooves (243). Both sides of the rear part are fixedly installed with traction groups, each traction group is composed of symmetrical traction steel wire ropes (244) in the upper and lower parts, and the left and right sides of the lower end of the powder box (231) are rotatably connected with winding posts (245), and the traction steel wire ropes (244) on the upper and lower sides are slidably passed through the powder box (231) and are fixedly connected with the corresponding winding posts (245), and the left and right sides of the lower end of the powder box (231) are fixedly installed with vortex springs (246), and the ends of the vortex springs (246) are fixedly connected with the corresponding winding posts (245).

9. The waste asphalt concrete recycling and processing device according to claim 4 is characterized in that: The screening frame (25) comprises a screening bowl (251), the bottom of the rectangular box (11) is rotatably connected with the screening bowl (251), a plurality of uniformly arranged screening holes (252) are provided on the screening bowl (251), a protruding column (253) is fixedly installed at the lower end of the screening bowl (251), a bevel gear (254) is fixedly installed at the lower end of the protruding column (253), a bevel gear (255) meshing with the bevel gear (254) is rotatably connected at the lower end of the rectangular box (11), a sprocket (256) is fixedly installed at the rear end of the bevel gear (255), a sprocket (257) is fixedly installed at the rear end of the rightmost and lowest guide roller (211), and the sprocket (256) and the sprocket (257) are connected to each other through a toothed chain belt (258). The screening round bowl (251) is provided with a discharge port (259), a blocking plate (260) with a screen hole is hinged inside the discharge port (259), a second traction wire rope (261) is fixedly connected to the end of the blocking plate (260), a threaded rod (262) is threadedly connected to the extension column (253), and the second traction wire rope (261) passes through the screening round bowl (251) and the extension column (253) and is finally wound and fixedly connected with the threaded rod (262).

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