Milling waste recycling treatment device for road pavement

Abstract

The invention relates to the technical field of waste recycling, in particular to a road surface milling waste recycling treatment device. The crusher is mounted on one side of the supporting frame; the screw rod feeding machine is mounted at the bottom of the crushing machine, and the feeding end of the screw rod feeding machine is communicated with the discharging end of the crushing machine; the stirring box is installed on the other side of the supporting frame, an inner container is installed on the inner wall of the stirring box, a feeding pipe extending out of the stirring box is installed on one side of the top of the inner container, and a sealing cover is arranged on the top of the feeding pipe. The milling waste crushing, screening and mixing integrated cyclic utilization treatment device is formed, the synchronization performance is good, the automation performance is high, the energy-saving effect is good, the good screening mechanism is arranged, it is guaranteed that milling waste is completely crushed, and the cyclic utilization efficiency and mixing efficiency of the milling waste are improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste recycling, and in particular discloses a device for recycling and processing milling waste from a road surface. Background Art

[0002] The recycling of milling waste refers to the process of renovating and reconstructing the original asphalt pavement that needs to be renovated during the process of pavement expansion or maintenance. After milling and recycling, it is mixed with new asphalt materials, aggregates, foam or emulsified asphalt regeneration agents in a certain proportion and regenerated, and then reapplied to pavement paving. The recycled asphalt mixture has good road performance. Through the recycling of milling waste, not only can the recycled pavement meet the pavement use requirements again, reduce the project cost, and save resources, but also avoid the pollution of the natural environment caused by pavement waste, achieve green development of the industry, and promote the construction of ecological civilization. It is a concrete practice of the development strategy of "resource-saving society". When the existing milling waste is mixed with new asphalt materials, aggregates, foam or emulsified asphalt regeneration agents, etc., due to the large volume of some milling waste, it needs to be crushed and then mixed for rapid mixing. However, the crushing process and mixing process for milling waste are usually operated separately, and the two cannot be combined into one, which greatly reduces the barrier-free use effect.

[0003] In order to solve the problem of separate operations for the crushing and mixing processes of milling waste, a milling waste recycling and processing device for a road surface in the market has a design that integrates the crushing equipment and the mixing equipment into one, and has a certain market share.

[0004] After searching, the invention patent with publication number CN111455777B discloses a road milling asphalt waste recycling and reuse device, which includes a crusher and a stirring mechanism, and also includes a walking mechanism. The crusher and the stirring mechanism are fixedly connected to the walking mechanism. The stirring mechanism includes a stirring piece and a feeding piece. The stirring piece includes a stirring box, a stirring barrel and a partition plate. The stirring box is provided with a discharge end and a feed end and its feed end is connected to the crusher. The discharge end and feed end of the stirring box are both provided with a valve 1. The discharge end of the feeding piece is connected to the stirring box. The partition plate is an annular structure and its outer ring edge is fixedly connected to the inner wall of the stirring box. The inner ring edge of the partition plate is fixedly connected to the upper opening edge of the stirring barrel. The upper opening edge of the stirring barrel is provided with a valve 2 for opening and closing it. The discharge end of the stirring barrel is connected to the discharge end of the stirring box. A heating piece is arranged around the stirring barrel, and a stirring blade is arranged in the stirring barrel.

[0005] Based on the above search and in combination with the prior art, it is found that the existing recycling and processing device uses a horizontal crusher to crush the milling waste, and then directly uses a conveyor belt to transport it to a mixing box for mixing processing. In this process, only one crushing operation of the milling waste is performed. However, the traditional horizontal crusher cannot completely crush the road milling waste at one time, and the existing equipment is not equipped with a certain screening mechanism, so that the block milling waste that is not completely crushed enters the mixing box along with the conveyor belt, thereby reducing the recycling efficiency and mixing efficiency of the milling waste. Therefore, a road pavement milling waste recycling and processing device is proposed to improve the above problems. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the traditional horizontal crusher is unable to completely crush the road milling waste at one time, so that the block-shaped milling waste that has not been completely crushed enters the mixing box along with the conveyor belt, thereby reducing the recycling efficiency and mixing efficiency of the milling waste.

[0007] In order to solve the above problems, the present invention provides a road pavement milling waste recycling treatment device, comprising:

[0008] Support frame;

[0009] A crusher, the crusher being mounted on one side of the support frame;

[0010] A screw loader, which is installed at the bottom of the crusher, and the feed end of the screw loader is connected to the discharge end of the crusher;

[0011] A mixing box, the mixing box is installed on the other side of the support frame, an inner tank is installed on the inner wall of the mixing box, and a feeding pipe extending out of the mixing box is installed on one side of the top of the inner tank, a sealing cover is provided on the top of the feeding pipe, a discharging pipe is installed at the bottom of the mixing box, and a first control valve is installed on the discharging pipe, and a mixing assembly is provided inside the mixing box;

[0012] A screening box, the screening box is installed on the top of the mixing box, a feeding port communicating with the discharging end at the bottom of the screening box is opened in the middle of the top of the mixing box, a connecting pipe is installed at one end of the screening box, and the top end of the connecting pipe is connected to the discharging end of the screw feeder through a flange;

[0013] A rotating screening assembly, the rotating screening assembly is mounted on the screening box, the rotating screening assembly is designed to be inclined, the rotating screening assembly comprises a collecting cylinder mounted on the other end of the screening box, and the inner wall of the collecting cylinder is rotatably connected with an end cylinder through a sealing bearing, a screen cylinder is mounted on one end of the end cylinder, an end cover is mounted on one end of the screen cylinder, a connecting pipe is fixed at the middle position of the end cover, one end of the connecting pipe is rotatably connected with the bottom end of the connecting pipe through a sealing bearing, a return pipe is mounted at the bottom of one end of the collecting cylinder, and one end of the return pipe extends to the feeding area of ​​the crusher, and a second control valve is mounted on the return pipe and the connecting pipe;

[0014] An anti-blocking component, the anti-blocking component is arranged at the bottom of the rotary screening component;

[0015] A transmission assembly for driving the rotary screening assembly, the anti-blocking assembly and the stirring assembly to rotate is installed at one end of the driving shaft of the crusher.

[0016] As a further supplement to the present application, a mounting seat is fixed to the inner wall of one end of the screening box, and a connecting seat is fixed to one side of the outer wall of the collecting cylinder. The anti-blocking component includes a rotating rod rotatably connected to the mounting seat and the connecting seat, and the outer wall of the rotating rod is fixed with multiple rows of equally spaced pushing rods, and the position of the pushing rod corresponds to the mesh position of the screen cylinder.

[0017] As a further supplement to the present application, the stirring assembly includes an L-shaped tube installed on the stirring box and the inner tank, and the vertical area of ​​the L-shaped tube is located at the center of the inner tank, one end of the horizontal area of ​​the L-shaped tube extends to the outside of the stirring box, and the middle position of the vertical area of ​​the L-shaped tube is rotatably connected to the first stirring shaft, and a rotating seat is fixed to the top of the first stirring shaft, and the rotating seat is designed to be cone-shaped. The outer wall of the rotating seat is installed with stirring frames distributed in an annular shape at equal distances, and X-shaped stirring plates are installed on the stirring frames. Stirring blades distributed in an annular shape at equal distances are installed at the bottom of the first stirring shaft.

[0018] As a further supplement to the present application, the corners of the L-shaped tube are rotatably connected to a second stirring shaft distributed in a ring at equal distances, and the second stirring shaft is equipped with spiral stirring blades, one end of the second stirring shaft is equipped with a third bevel gear located in the L-shaped tube, and the outer wall of the first stirring shaft is equipped with a second bevel gear, and the second bevel gear is meshed with the third bevel gear.

[0019] As a further supplement to the present application, a side frame is installed on the outer wall of one end of the screening box, and the transmission assembly includes a worm rotatably connected to the side frame, and a worm wheel located in the side frame is installed at one end of the rotating rod, the worm wheel is meshed with the worm, and a transmission gear is rotatably connected to the top of one side of the mounting seat, a first gear meshed with the transmission gear is installed on the outer wall of the rotating rod, and a second gear meshed with the transmission gear is installed on the outer wall of the connecting pipe. A transmission shaft is rotatably connected to the middle position of the horizontal area of ​​the L-shaped tube, a first bevel gear is installed at one end of the transmission shaft, and the first bevel gear is meshed with the second bevel gear. A main shaft is installed at one end of the driving shaft of the crusher, and pulleys are installed at one end of the main shaft, one end of the transmission shaft and one end of the worm, and a first belt and a second belt are transmission-connected between two adjacent pulleys.

[0020] As a further supplement to the present application, a through opening is opened on one side of the bottom of the mixing box, and a heater is installed on the inner walls around the through opening and the bottom of the inner tank, a heating tube is installed on the top of the heater and the inner wall of the inner tank, a temperature sensor is fixedly installed on one side of the top of the mixing box, and the probe of the temperature sensor extends to the interior of the inner tank, a control cabinet is installed on one side of the interior of the support frame, and the control cabinet, the heater and the temperature sensor are electrically connected.

[0021] As a further supplement to the present application, an annular sealing plate is installed on the top of the circumferential outer wall of the inner tank and the circumferential inner wall of the mixing box, and an air duct is fixed to the top of the inner tank and passes through the annular sealing plate at equal distances, a pressure relief pipe is fixed to one side of the bottom of the mixing box, and a pressure relief valve is installed on the pressure relief pipe, and a pressure gauge is installed on one side of the top of the pressure relief pipe, and the pressure gauge, pressure relief valve, crusher, screw feeder, first control valve, second control valve and control cabinet are electrically connected.

[0022] As a further supplement to the present application, a folding cover is hinged on the top of the crusher, and one end of the return pipe is designed to be arc-shaped, the arc center of one end of the return pipe coincides with the hinge axis of the folding cover, and a guide hole is provided on the folding cover for one end of the return pipe to pass through.

[0023] As a further supplement to the present application, a base is installed at the bottom of the support frame, and a plurality of moving wheels are installed on the base.

[0024] As another improvement of the present application, an insulation ring is installed on the outer wall of the inner tank and the inner wall of the mixing box, and the insulation ring is made of phase change energy storage material, and a plurality of criss-cross honeycomb holes are opened on the insulation ring.

[0025] In summary, after adopting the above structure, the present invention has the following advantages compared with the prior art:

[0026] 1. The above-mentioned crusher, screw feeder, screening box, transmission component, rotary screening component, mixing box, inner tank and mixing component are used to form an integrated recycling and processing device for crushing, screening and mixing of milling waste. The crusher can be used to crush the milling waste, and the transmission function of the transmission component can be used to drive the screening process and the mixing process to proceed synchronously, so that the whole recycling and processing device has good synchronization performance, strong automation performance, good energy-saving effect, and improves the working efficiency of the whole milling waste recycling and processing device.

[0027] 2. The above-mentioned reflux pipe, screening box, rotary screening assembly and anti-blocking assembly are used to drive the rotary screening assembly and the anti-blocking assembly to move synchronously when the crusher is working. The crushed milling waste is screened by the rotary screening assembly, so that the block milling waste that is not screened out enters the crusher along the reflux pipe for further crushing, so that the entire milling waste recycling and processing device is provided with a better screening mechanism, which ensures the complete crushing performance of the milling waste and prevents the block milling waste that is not completely crushed from entering the mixing box, thereby improving the recycling efficiency and mixing efficiency of the milling waste, and can prevent the screening process from being blocked under the action of the anti-blocking assembly to avoid the problem of screening blockage.

[0028] 3. The above-mentioned mixing box, inner tank and mixing component can drive the mixing component to move synchronously when the crusher is working, so that the first mixing shaft, the rotating seat, the mixing frame, the X-shaped mixing plate, the mixing piece, the second mixing shaft and the spiral mixing blade rotate synchronously, thereby stirring most of the area in the inner tank, making the flow directions of the milling waste and the new asphalt material in the inner tank different, thereby fully improving the mixing efficiency of the entire milling waste recycling device.

[0029] 4. The above-mentioned heater, heating tube, annular sealing plate, air guide tube, pressure gauge and pressure relief tube can be used to heat the interior of the inner tank under the action of the heater and the heating tube, so that the mixing process can be carried out under a certain temperature environment, further improving the mixing efficiency and avoiding solidification problems. The pressure relief pipe is used to relieve pressure during the mixing process to balance the air pressure in the inner tank.

[0030] 5. The above-mentioned insulation ring is made of phase change energy storage material to absorb the temperature of the gas during the pressure relief process, so that the mixing box has a heat storage function, thereby making the mixing process of the entire milling waste recycling and treatment device have an insulation effect, fully avoiding the problem of solidification. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional schematic diagram of a device for recycling and treating milling waste from road pavement;

[0032] Figure 2It is a front view of a device for recycling and treating milling waste of road pavement;

[0033] Figure 3 A schematic diagram of the structure of a first belt and a second belt of a device for recycling and treating milling waste of a road surface;

[0034] Figure 4 A cross-sectional view of a screening box and a mixing box of a device for recycling and treating milling waste of a road surface;

[0035] Figure 5 It is a schematic diagram of the structure of a rotary screening component and an anti-blocking component of a milling waste recycling and processing device for a road surface;

[0036] Figure 6 It is a cross-sectional view of an end cylinder and a screen cylinder of a milling waste recycling and processing device for a road surface;

[0037] Figure 7 A cross-sectional view of a mixing box of a device for recycling and treating milling waste of road pavement;

[0038] Figure 8 It is a cross-sectional view of the inner liner and the insulation ring of a device for recycling and treating milling waste of road pavement;

[0039] Fig. 9 It is a three-dimensional schematic diagram of a stirring assembly of a device for recycling and treating milling waste of road pavement;

[0040] Fig.10 It is a cross-sectional view of an L-shaped tube of a milling waste recycling and processing device for road pavement;

[0041] Fig.11 The present invention is a bottom view of the second bevel gear and the third bevel gear of a device for recycling and processing milling waste of road pavement.

[0042] Description of the numbers in the figure:

[0043] 1. Base; 2. Support frame; 3. Crusher; 4. Folding cover; 5. Reflux pipe; 6. Screw feeder; 7. Connecting pipe; 8. Screening box; 9. Side frame; 10. Mixing box; 11. Pressure gauge; 12. Pressure relief pipe; 13. Discharge pipe; 14. Transmission assembly; 1401. Main shaft; 1402. Pulley; 1403. First belt; 1404. Transmission shaft; 1405. Second belt; 1406. Worm; 1407. Worm wheel; 1408. First gear; 1409. Transmission gear; 1410. Second gear; 1411. First bevel gear; 15. Control cabinet; 16. Feeding pipe; 17. Rotary screening assembly; 1701. Collecting cylinder; 1702. End cylinder; 1703, screen cylinder; 1704, end cover; 1705, connecting pipe; 18, mounting seat; 19, anti-blocking assembly; 1901, rotating rod; 1902, lifting rod; 20, liner; 21, insulation ring; 22, honeycomb hole; 23, stirring assembly; 2301, L-shaped tube; 2302, second stirring shaft; 2303, spiral stirring blade; 2304, stirring frame; 2305, rotating seat; 2306, X-shaped stirring plate; 2307, first stirring shaft; 2308, stirring blade; 2309, second bevel gear; 2310, third bevel gear; 24, heater; 25, annular sealing plate; 26, air guide tube; 27, drop port; 28, temperature sensor; 29, heating tube. DETAILED DESCRIPTION

[0044] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0045] The first implementation method:

[0046] The present invention provides a road pavement milling waste recycling treatment device, please refer to Figure 1-Figure 11 ,include:

[0047] Support frame 2;

[0048] Crusher 3, crusher 3 is installed on one side of the support frame 2;

[0049] A screw feeder 6 is installed at the bottom of the crusher 3, and a feed end of the screw feeder 6 is connected to a discharge end of the crusher 3;

[0050] A mixing box 10 is installed on the other side of the support frame 2, an inner liner 20 is installed on the inner wall of the mixing box 10, and a feed pipe 16 extending from the mixing box 10 is installed on one side of the top of the inner liner 20, a sealing cover is provided on the top of the feed pipe 16, a discharge pipe 13 is installed at the bottom of the mixing box 10, and a first control valve is installed on the discharge pipe 13, a mixing assembly 23 is provided inside the mixing box 10, and the mixing assembly 23 includes an L-shaped tube 2301 installed on the mixing box 10 and the inner liner 20, and the vertical area of ​​the L-shaped tube 2301 is located at At the center of the inner tank 20, one end of the horizontal area of ​​the L-shaped tube 2301 extends to the outside of the mixing box 10, and the middle position of the vertical area of ​​the L-shaped tube 2301 is rotatably connected to the first stirring shaft 2307. A rotating seat 2305 is fixed on the top of the first stirring shaft 2307. The rotating seat 2305 is designed to be conical. The outer wall of the rotating seat 2305 is installed with stirring racks 2304 distributed in an annular shape at equal distances. The stirring racks 2304 are all installed with X-shaped stirring plates 2306. The bottom of the first stirring shaft 2307 is installed with stirring racks 2304 distributed in an annular shape at equal distances. The corner of the L-shaped tube 2301 is rotatably connected with a second stirring shaft 2302 distributed in an annular manner with equal distances, and the second stirring shaft 2302 is equipped with a spiral stirring blade 2303, and one end of the second stirring shaft 2302 is equipped with a third bevel gear 2310 located in the L-shaped tube 2301, and the outer wall of the first stirring shaft 2307 is equipped with a second bevel gear 2309, and the second bevel gear 2309 is meshed with the third bevel gear 2310. When the stirring assembly 23 moves, the first bevel gear 1411 is connected with the third bevel gear 2310. The meshing action of the second bevel gear 2309 and the meshing action of the second bevel gear 2309 and the third bevel gear 2310 drive the first stirring shaft 2307, the rotating seat 2305, the stirring frame 2304, the X-shaped stirring plate 2306, the stirring piece 2308, the second stirring shaft 2302 and the spiral stirring blade 2303 to rotate synchronously, thereby stirring most of the area in the inner tank 20, so that the flow directions of the milling waste and the new asphalt material in the inner tank 20 are different, and the mixing efficiency of the entire milling waste recycling device is fully improved;

[0051] The screening box 8 is installed on the top of the mixing box 10. A feeding port 27 communicating with the bottom discharge end of the screening box 8 is provided in the middle of the top of the mixing box 10. A connecting pipe 7 is installed at one end of the screening box 8. The top end of the connecting pipe 7 is connected to the discharge end of the screw feeder 6 through a flange.

[0052] The rotary screening assembly 17 is installed on the screening box 8. The rotary screening assembly 17 is designed to be inclined. The rotary screening assembly 17 includes a collecting cylinder 1701 installed at the other end of the screening box 8, and the inner wall of the collecting cylinder 1701 is rotatably connected with an end cylinder 1702 through a sealed bearing. A screen cylinder 1703 is installed at one end of the end cylinder 1702. An end cover 1704 is installed at one end of the screen cylinder 1703. A connecting pipe 1705 is fixed at the middle position of the end cover 1704. One end of the connecting pipe 1705 is rotatably connected to the bottom end of the connecting pipe 7 through a sealed bearing. One end of the collecting cylinder 1701 is connected to the bottom end of the connecting pipe 7 through a sealed bearing. A return pipe 5 is installed at the bottom, and one end of the return pipe 5 extends to the feeding area of ​​the crusher 3. A second control valve is installed on the return pipe 5 and the connecting pipe 7, which can drive the rotating screening component 17 to move synchronously when the crusher 3 is working. The crushed milling waste is screened by the rotating screening component 17, so that the blocky milling waste that is not screened out enters the crusher 3 along the return pipe 5 to continue to be crushed, and the screened milling waste enters the inner tank 20 along the drop port 27, so that the entire milling waste recycling and processing device is provided with a better screening mechanism to ensure the complete crushing performance of the milling waste;

[0053] The anti-blocking component 19 is arranged at the bottom of the rotating screening component 17. A mounting seat 18 is fixed to the inner wall of one end of the screening box 8, and a connecting seat is fixed to one side of the outer wall of the collecting cylinder 1701. The anti-blocking component 19 includes a rotating rod 1901 rotatably connected to the mounting seat 18 and the connecting seat, and a plurality of rows of equidistantly distributed ejecting rods 1902 are fixed to the outer wall of the rotating rod 1901. The position of the ejecting rod 1902 corresponds to the mesh position of the screen cylinder 1703. When the crusher 3 is working, the rotating rod 1901 and the ejecting rod 1902 in the anti-blocking component 19 are driven to rotate, thereby preventing the screen cylinder 1703 from being blocked during the screening process to avoid the problem of screening blockage.

[0054] A transmission assembly 14 for driving the rotating screening assembly 17, the anti-blocking assembly 19 and the stirring assembly 23 is installed at one end of the driving shaft of the crusher 3. A side frame 9 is installed on the outer wall of one end of the screening box 8. The transmission assembly 14 includes a worm 1406 rotatably connected to the side frame 9, and a worm wheel 1407 located in the side frame 9 is installed at one end of the rotating rod 1901. The worm wheel 1407 is meshed with the worm 1406. The top of one side of the mounting seat 18 is rotatably connected to the transmission gear 1406. 09, the outer wall of the rotating rod 1901 is equipped with a first gear 1408 meshing with the transmission gear 1409, the outer wall of the connecting pipe 1705 is equipped with a second gear 1410 meshing with the transmission gear 1409, the middle position of the horizontal area of ​​the L-shaped tube 2301 is rotatably connected with the transmission shaft 1404, one end of the transmission shaft 1404 is equipped with a first bevel gear 1411, the first bevel gear 1411 is meshed with the second bevel gear 2309, and the driving shaft of the crusher 3 is connected to the transmission shaft 1404. A main shaft 1401 is installed at the end, and a pulley 1402 is installed at one end of the main shaft 1401, one end of the transmission shaft 1404 and one end of the worm 1406. A first belt 1403 and a second belt 1405 are connected between two adjacent pulleys 1402 for transmission. In the process of crushing the milling waste by the crusher 3, the transmission action of the transmission component 14 can drive the screening process and the mixing process to be carried out synchronously, so that the main shaft 1401 in the transmission component 14 rotates synchronously, driving the pulley 1402, the first belt 1403, the transmission shaft 1404, the first bevel gear 1411, the second belt 1405, the worm 1406, the worm wheel 1407, the first gear 1408, the transmission gear 1409, and the second gear 1410 to rotate synchronously, driving the stirring component 23, the rotary screening component 17 and the anti-blocking component 19 to move synchronously, so that the synchronization performance of the entire recycling and processing device is good, the automation performance is strong, and the energy-saving effect is good.

[0055] In the present invention, Figure 4 , Figure 7 and Figure 8 As shown, a through opening is provided on one side of the bottom of the mixing box 10, and a heater 24 is installed on the inner walls around the through opening and the bottom of the inner tank 20, a heating tube 29 is installed on the top of the heater 24 and the inner wall of the inner tank 20, a temperature sensor 28 is fixedly installed on one side of the top of the mixing box 10, and the probe of the temperature sensor 28 extends to the inside of the inner tank 20, a control cabinet 15 is installed on one side of the interior of the support frame 2, and the control cabinet 15, the heater 24 and the temperature sensor 28 are electrically connected, and the interior of the inner tank 20 can be heated under the action of the heater 24 and the heating tube 29, so that the mixing process can be carried out under a certain temperature environment, further improving the mixing efficiency.

[0056] In the present invention, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, an annular sealing plate 25 is installed on the top of the circumferential outer wall of the inner tank 20 and the circumferential inner wall of the mixing box 10, and an air duct 26 that passes through the annular sealing plate 25 at an equal distance is fixed on the top of the inner tank 20, a pressure relief pipe 12 is fixed on one side of the bottom of the mixing box 10, and a pressure relief valve is installed on the pressure relief pipe 12, and a pressure gauge 11 is installed on one side of the top of the pressure relief pipe 12, the pressure gauge 11, the pressure relief valve, the crusher 3, the screw feeder 6, the first control valve, the second control valve and the control cabinet 15 are electrically connected, and the high-pressure gas generated during heating is introduced into the gap between the mixing box 10 and the inner tank 20 through the air duct 26, and the air pressure is detected by the pressure gauge 11. When the air pressure is too high, the control cabinet 15 is cooperated to control the pressure relief valve to start, and the pressure is relieved through the pressure relief pipe 12 to balance the air pressure in the inner tank 20.

[0057] In the present invention, Figure 1 and Figure 2 As shown, a folding cover plate 4 is hinged on the top of the crusher 3, and one end of the return pipe 5 is designed to be arc-shaped, the arc center of one end of the return pipe 5 coincides with the hinge axis of the folding cover plate 4, and a guide hole is provided on the folding cover plate 4 for one end of the return pipe 5 to pass through. The crushing process is protected by the folding cover plate 4 to avoid dust problems. A base 1 is installed at the bottom of the support frame 2, and a plurality of moving wheels are installed on the base 1. The moving wheels make the entire recycling and processing device portable.

[0058] In summary, when in use, the user pre-proportions the milling waste, new asphalt material, aggregate, foam or emulsified asphalt regeneration agent, etc., controls the crusher 3, the screw feeder 6, the pressure gauge 11, the heater 24 and the temperature sensor 28 through the control cabinet 15, opens the second control valve, and makes the main shaft 1401 in the transmission assembly 14 rotate synchronously, thereby driving the pulley 1402, the first belt 1403, the transmission shaft 1404, the first bevel gear 1411, the second belt 1405, the worm 1406, the worm wheel 1407, the first gear 1408, the transmission gear 1409, and the second gear 141 0 rotates synchronously, driving the stirring assembly 23, the rotary screening assembly 17 and the anti-blocking assembly 19 to move synchronously. When in use, the milling waste is put into the crusher 3 for crushing, and then the crushed milling waste is introduced into the connecting pipe 7 by the screw feeder 6, so that it enters the screen cylinder 1703 in the rotary screening assembly 17, so that the crushed milling waste can be screened, so that the blocky milling waste that is not screened out enters the crusher 3 along the return pipe 5 and continues to be crushed, and the screened milling waste enters the inner tank 20 along the drop port 27. At this time, the rotating rod 1901 and the lifting rod 1902 in the anti-blocking assembly 19 are also synchronously rotated. The step rotation can prevent the screen cylinder 1703 from being blocked during the screening process to avoid the problem of screening blockage. In addition, the user puts new asphalt materials, aggregates, foam or emulsified asphalt regeneration agent into the inner tank 20 through the feed pipe 16, and the interior of the inner tank 20 is heated by the heater 24 and the heating tube 29. When the stirring component 23 moves, the first stirring shaft 2307, the rotating seat 2305, the stirring frame 2304, the X-shaped ... The plate 2306, the stirring piece 2308, the second stirring shaft 2302 and the spiral stirring blade 2303 rotate synchronously, thereby stirring most of the area inside the inner tank 20, so as to perform mixing operations under a certain stable environment, and introduce the high-pressure gas generated during heating into the gap between the mixing box 10 and the inner tank 20 through the air duct 26, and detect the air pressure through the pressure gauge 11. When the air pressure is too high, the control cabinet 15 is cooperated to control the pressure relief valve to start, and the pressure relief operation of the mixing process is performed through the pressure relief pipe 12 to balance the air pressure in the inner tank 20. Finally, when in use, open the first control valve and discharge the material through the discharge pipe 13.

[0059] Second implementation method:

[0060] This embodiment adds the following structure on the basis of embodiment 1, so that this application has a heat preservation function, and the specific configuration is as follows: Figure 4 , Figure 7 and Figure 8As shown, an insulation ring 21 is installed on the outer wall of the inner tank 20 and the inner wall of the mixing box 10, and the insulation ring 21 is made of phase change energy storage material. A plurality of criss-cross honeycomb holes 22 are opened on the insulation ring 21. The insulation ring 21 made of phase change energy storage material absorbs the temperature of the gas during the pressure relief process, so that the mixing box 10 has a heat storage function, thereby making the mixing process of the entire milling waste recycling and treatment device have an insulation effect.

[0061] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A device for recycling and treating milling waste from road surfaces, characterized in that: include: Support frame (2); A crusher (3), wherein the crusher (3) is installed on one side of the support frame (2); A screw loader (6), the screw loader (6) being installed at the bottom of the crusher (3), the feed end of the screw loader (6) being connected to the discharge end of the crusher (3); A stirring box (10), the stirring box (10) being mounted on the other side of the support frame (2), an inner liner (20) being mounted on the inner wall of the stirring box (10), and a feed pipe (16) extending out of the stirring box (10) being mounted on one side of the top of the inner liner (20), a sealing cover being disposed on the top of the feed pipe (16), a discharge pipe (13) being mounted on the bottom of the stirring box (10), and a first control valve being mounted on the discharge pipe (13), and a stirring assembly (23) being disposed inside the stirring box (10); A screening box (8), the screening box (8) being mounted on the top of the mixing box (10), a material discharge port (27) communicating with the bottom discharge end of the screening box (8) being provided at the middle of the top of the mixing box (10), a connecting pipe (7) being installed at one end of the screening box (8), the top end of the connecting pipe (7) being connected to the discharge end of the screw feeder (6) via a flange; The rotary screening assembly (17) is mounted on the screening box (8), the rotary screening assembly (17) is designed to be inclined, and the rotary screening assembly (17) comprises a collecting cylinder (1701) mounted on the other end of the screening box (8), and the inner wall of the collecting cylinder (1701) is rotatably connected to an end cylinder (1702) via a sealing bearing, and a screen cylinder (1703) is mounted on one end of the end cylinder (1702), and the screen cylinder (1703) is provided on the inner wall of the collecting cylinder (1701). 3) is installed with an end cover (1704), a connecting pipe (1705) is fixed in the middle of the end cover (1704), one end of the connecting pipe (1705) is rotatably connected to the bottom end of the connecting pipe (7) through a sealing bearing, a return pipe (5) is installed at the bottom of one end of the collecting cylinder (1701), and one end of the return pipe (5) extends to the feeding area of ​​the crusher (3), and a second control valve is installed on the return pipe (5) and the connecting pipe (7); an anti-blocking component (19), wherein the anti-blocking component (19) is arranged at the bottom of the rotary screening component (17); A transmission assembly (14) for driving the rotary screening assembly (17), the anti-blocking assembly (19) and the stirring assembly (23) to rotate is installed at one end of the driving shaft of the crusher (3).

2. The device for recycling and treating milling waste of road pavement according to claim 1 is characterized in that: A mounting seat (18) is fixed to the inner wall at one end of the screening box (8), and a connecting seat is fixed to one side of the outer wall of the collecting cylinder (1701); the anti-blocking component (19) comprises a rotating rod (1901) rotatably connected to the mounting seat (18) and the connecting seat, and a plurality of rows of equidistantly distributed pushing rods (1902) are fixed to the outer wall of the rotating rod (1901); the position of the pushing rod (1902) corresponds to the mesh position of the screen cylinder (1703).

3. The device for recycling and treating milling waste of road pavement according to claim 1 is characterized in that: The stirring assembly (23) comprises an L-shaped tube (2301) installed on the stirring box (10) and the inner container (20), wherein the vertical region of the L-shaped tube (2301) is located at the center of the inner container (20), one end of the horizontal region of the L-shaped tube (2301) extends to the outside of the stirring box (10), a first stirring shaft (2307) is rotatably connected to the middle position of the vertical region of the L-shaped tube (2301), a rotating seat (2305) is fixed to the top of the first stirring shaft (2307), the rotating seat (2305) is designed to be conical, and stirring frames (2304) distributed in an annular shape at equal distances are installed on the outer wall of the rotating seat (2305), and X-shaped stirring plates (2306) are installed on the stirring frames (2304), and stirring blades (2308) distributed in an annular shape at equal distances are installed at the bottom of the first stirring shaft (2307).

4. The device for recycling and treating milling waste of road pavement according to claim 3 is characterized in that: The corners of the L-shaped tube (2301) are rotatably connected to second stirring shafts (2302) that are equidistantly distributed in a ring shape, and the second stirring shafts (2302) are each mounted with spiral stirring blades (2303), one end of the second stirring shaft (2302) is each mounted with a third bevel gear (2310) located inside the L-shaped tube (2301), and the outer wall of the first stirring shaft (2307) is mounted with a second bevel gear (2309), and the second bevel gear (2309) is meshed with the third bevel gear (2310).

5. The device for recycling and treating milling waste of road pavement according to claim 4 is characterized in that: A side frame (9) is mounted on the outer wall of one end of the screening box (8); the transmission assembly (14) comprises a worm (1406) rotatably connected to the side frame (9); a worm wheel (1407) located in the side frame (9) is mounted on one end of the rotating rod (1901); the worm wheel (1407) is meshed with the worm (1406); a transmission gear (1409) is rotatably connected to the top of one side of the mounting seat (18); a first gear (1408) meshed with the transmission gear (1409) is mounted on the outer wall of the rotating rod (1901); and a first gear (1408) meshed with the transmission gear (1409) is mounted on the outer wall of the connecting pipe (1705). The second gear (1410) is rotatably connected to a transmission shaft (1404) at the middle position of the horizontal area of ​​the L-shaped tube (2301); a first bevel gear (1411) is installed at one end of the transmission shaft (1404); the first bevel gear (1411) is meshed with a second bevel gear (2309); a main shaft (1401) is installed at one end of the driving shaft of the crusher (3); a pulley (1402) is installed at one end of the main shaft (1401), one end of the transmission shaft (1404) and one end of the worm (1406); a first belt (1403) and a second belt (1405) are connected for transmission between two adjacent pulleys (1402).

6. The device for recycling and treating milling waste of road pavement according to claim 5 is characterized in that: A through opening is provided on one side of the bottom of the mixing box (10), and a heater (24) is installed on the inner walls around the through opening and the bottom of the inner container (20), and a heating pipe (29) is installed on the top of the heater (24) and the inner wall of the inner container (20). A temperature sensor (28) is fixedly installed on one side of the top of the mixing box (10), and the probe of the temperature sensor (28) extends to the inside of the inner container (20). A control cabinet (15) is installed on one side of the interior of the support frame (2), and the control cabinet (15), the heater (24) and the temperature sensor (28) are electrically connected.

7. The device for recycling and treating milling waste of road pavement according to claim 6 is characterized in that: An annular sealing plate (25) is installed at the top of the circumferential outer wall of the inner container (20) and the circumferential inner wall of the mixing box (10), and an air guide pipe (26) is fixed to the top of the inner container (20) and passes through the annular sealing plate (25) at an equal distance. A pressure relief pipe (12) is fixed to one side of the bottom of the mixing box (10), and a pressure relief valve is installed on the pressure relief pipe (12). A pressure gauge (11) is installed on one side of the top of the pressure relief pipe (12). The pressure gauge (11), the pressure relief valve, the crusher (3), the screw feeder (6), the first control valve, the second control valve and the control cabinet (15) are electrically connected.

8. The device for recycling and treating milling waste of road pavement according to claim 7 is characterized in that: The outer wall of the inner container (20) and the inner wall of the mixing box (10) are provided with a heat-insulating ring (21), and the heat-insulating ring (21) is made of a phase-change energy storage material. A plurality of crisscross honeycomb holes (22) are provided on the heat-insulating ring (21).

9. The device for recycling and treating milling waste of road pavement according to claim 1, characterized in that: A folding cover plate (4) is hingedly connected to the top of the crusher (3), and one end of the return pipe (5) is designed to be arc-shaped, the arc center of one end of the return pipe (5) coincides with the hinge axis of the folding cover plate (4), and a guide hole is provided on the folding cover plate (4) for one end of the return pipe (5) to pass through.

10. The device for recycling and treating milling waste of road pavement according to claim 1, characterized in that: A base (1) is installed at the bottom of the support frame (2), and a plurality of moving wheels are installed on the base (1).

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