Road engineering building material waste treatment device

Abstract

The invention relates to the technical field of solid building material waste treatment, and discloses a road engineering building material waste treatment device which comprises a cleaning tank, a regeneration stirring bin is arranged on one side of the cleaning tank, the regeneration stirring bin and the cleaning tank are connected through a waste conveyor, and a cleaning filter plate is embedded and fixedly connected to the upper portion of the cleaning tank; the cleaning filter plate is of an arc-shaped net-shaped structure, the arc-shaped face of the cleaning filter plate faces downwards, an inner cavity of the cleaning tank is divided into an upper cavity and a lower cavity which are distributed up and down, crushed and sorted asphalt-containing waste aggregate enters the upper cavity above the cleaning filter plate and is immersed in cleaning liquid in the cleaning tank, the top wall of the cleaning tank is fixedly connected with a support, and the support is fixedly connected with the cleaning filter plate. And a shifting device is arranged at the top of the bracket. And through an arc-shaped net-shaped cleaning filter plate and material stirring plate linkage mechanism, waste aggregate rolling collision cleaning is achieved, oil stains and heavy metal ions are effectively decomposed in cooperation with nanoscale hydroxyl free radicals generated by a titanium electrode electrolysis module, and the cleaning efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of solid building material waste treatment, in particular to a road engineering building material waste treatment device. Background Art

[0002] In the field of road engineering, the recycling of waste asphalt mixtures has become an important issue in resource recycling. Traditional waste aggregate treatment processes generally have problems such as low cleaning efficiency, high energy consumption, and high risk of secondary pollution. Existing cleaning equipment mostly uses high-pressure water washing or chemical immersion, which has defects such as high water consumption, residual chemicals, and incomplete asphalt stripping on the aggregate surface. In particular, the cleaning effect on attached oil stains and heavy metal ions is limited. In the regeneration and mixing process, aggregate preheating relies on electric heating or gas heating, with low energy utilization and high exhaust gas emission temperature. Conventional condensation treatment equipment has a large load and high operating cost.

[0003] In addition, although microwave regeneration technology can improve heating efficiency, the insufficient penetration depth of single-frequency microwaves leads to significant temperature differences between the inside and outside of the aggregate, affecting the quality of regeneration. In existing equipment, the cleaning and regeneration links are mostly independent systems, and the heat energy is not used in a closed loop. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a road engineering construction material waste treatment device, which solves the defects in the existing recycling process of waste asphalt mixture.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a road engineering construction material waste treatment device, including a cleaning tank, a regeneration mixing chamber is arranged on one side of the cleaning tank, and the two are connected by a waste conveyor. A cleaning filter plate is embedded in and fixedly connected to the upper part of the cleaning tank. The cleaning filter plate adopts an arc-shaped mesh structure, with its arc surface facing downward, and divides the inner cavity of the cleaning tank into an upper chamber and a lower chamber distributed up and down. The asphalt-containing waste aggregate after crushing and sorting enters the upper chamber above the cleaning filter plate and is immersed in the cleaning liquid in the cleaning tank. A bracket is fixedly connected to the top wall of the washing tank, and a material-shifting device is arranged on the top of the bracket. The waste aggregate in the upper chamber is cleaned by the reciprocating movement of the material-shifting device. The cleaned waste aggregate is shifted into the waste conveyor by the material-shifting device, and then the waste aggregate is sent into the regeneration mixing chamber through the waste conveyor. A water storage tower is arranged on the outside of the washing tank, and the two are connected by a water circulation mechanism. A heat exchanger is arranged in the water storage tower, and the exhaust port of the regeneration mixing chamber is connected to the air inlet end of the heat exchanger through an exhaust gas pipe, and the exhaust end of the heat exchanger is connected to the condensation treatment equipment.

[0006] Preferably, the material feeding device includes a rotating shaft which penetrates and is rotatably connected to the top of the bracket. Three annularly and equally spaced material feeding plates are fixedly connected to the outer wall of the rotating shaft. One end of the rotating shaft is fixedly connected to a speed reducer, and the input end of the speed reducer is fixedly connected to a servo motor. The outer wall of the servo motor is fixedly connected to the outer wall of the bracket through a mounting frame.

[0007] Preferably, the cleaning tank is placed in the sewage tank. The bottom wall of the cleaning tank is of a trapezoidal structure, and its height gradually decreases from the middle to both sides. An inlet is opened in the middle, and a swirl plate is installed at the upper opening of the inlet. Drain pipes are arranged on both sides, and drain valves are configured on the pipe bodies of the drain pipes. A plurality of overflow ports are opened at the edge of the top wall of the cleaning tank.

[0008] Preferably, a filter is arranged in the sewage tank. The filter divides the inner cavity of the sewage tank into a sewage chamber and a water storage chamber. The sewage discharged from the overflow port and the drain pipe enters the sewage chamber, and then flows into the water storage chamber after being filtered by the filter.

[0009] Preferably, the water circulation mechanism includes a circulation water pump. The water pumping end of the circulation water pump is communicated with the water storage chamber through a first circulation pipeline, and the water outlet end is communicated with the inside of the water storage tower through a second circulation pipeline. The water outlet of the water storage tower is communicated with the inlet in the middle of the cleaning tank through a third circulation pipeline.

[0010] Preferably, a stirring motor is fixedly connected to the center of the top end of the regeneration stirring chamber. A feeding port and an exhaust port are respectively opened on both sides. The output end of the stirring motor is fixedly connected to a stirring shaft which is perpendicular to the inside of the regeneration stirring chamber. An opening and closing mechanism is arranged on the upper part of the stirring shaft, and a stirring component is arranged on the lower part. The opening and closing mechanism divides the inner cavity of the regeneration stirring chamber into a preheating chamber and a stirring chamber. The preheating chamber is located above the stirring chamber. A sandwich is arranged in the chamber body of the regeneration stirring chamber. The sandwich surrounds the stirring chamber, and a dual-frequency microwave generator is arranged in the sandwich. The materials in the stirring chamber are heated by the dual-frequency microwave generator, and the generated hot air flow passes through the opening and closing mechanism and enters the preheating chamber to preheat the waste aggregates in the preheating chamber.

[0011] Preferably, the opening and closing mechanism includes a fixed sleeve and a threaded sleeve, both of which are sleeved on the outer wall of the stirring shaft, and the fixed sleeve is located above the threaded sleeve, a spring is arranged between the fixed sleeve and the threaded sleeve, the inner wall of the fixed sleeve is rotatably connected to the outer wall of the stirring shaft, and a plurality of skeletons are rotatably connected around the outer wall of the fixed sleeve, and the plurality of skeletons are connected by an isolation net to form an umbrella structure, the outer wall of the stirring shaft is provided with an external thread, the threaded sleeve is composed of an inner sleeve and an outer sleeve that are nested and rotatably connected to each other, the inner wall of the inner sleeve is provided with an internal thread corresponding to the external thread, and the outer wall of the outer sleeve is connected to the bottom of the skeleton by a connecting rod, when the stirring motor drives the stirring shaft to stir, the inner sleeve of the threaded sleeve is disengaged from the external thread, and the threaded sleeve is located above the external thread, at this time, the plurality of skeletons are synchronously unfolded, and the isolation net isolates the preheating chamber from the stirring chamber, and when the stirring motor drives the stirring shaft to rotate in the opposite direction, the inner sleeve of the threaded sleeve is screwed with the external thread under the action of the spring, so that the threaded sleeve moves downward, and the skeleton is pulled together by the connecting rod.

[0012] Preferably, a titanium electrode electrolysis module is provided on the bottom of the arcuate surface of the cleaning filter plate facing the bottom wall of the cleaning tank, and the plate body of the titanium electrode electrolysis module substrate adopts a honeycomb porous structure, and the cross-section of the substrate is V-shaped.

[0013] The present invention provides a road engineering construction material waste treatment device, which has the following beneficial effects:

[0014] The present invention realizes tumbling and collision cleaning of waste aggregates through the linkage mechanism of arc-shaped mesh cleaning filter plates and material-diverting plates, and cooperates with the nano-scale hydroxyl radicals generated by the titanium electrode electrolysis module to effectively decompose oil and heavy metal ions, thereby improving the cleaning efficiency. At the same time, the high-temperature exhaust gas in the regeneration mixing chamber is preheated by the heat exchanger to preheat the cleaning liquid, thereby realizing waste heat recovery, improving the decontamination activity of the cleaning liquid, and reducing the load of the condensation treatment equipment. The penetration depth of the dual-frequency microwave generator is 2.3 times that of the traditional single-frequency, which improves the uniformity of aggregate heating, reduces regeneration energy consumption, and shortens the time. The umbrella-shaped opening and closing mechanism realizes dynamic isolation between the preheating chamber and the stirring chamber, and uses the residual heat of stirring to pre-dry the waste aggregate to 80°C, further shortening the regeneration time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 It is a structural schematic diagram of the cleaning tank in the present invention;

[0018] Figure 4 It is a structural schematic diagram of the regeneration mixing chamber in the present invention;

[0019] Figure 5 This is a schematic structural diagram of the water storage tower in the present invention.

[0020] Among them, 1. Cleaning tank; 101. Upper chamber; 102. Lower chamber; 2. Regeneration stirring chamber; 201. Preheating chamber; 202. Stirring chamber; 203. Interlayer; 3. Waste conveyor; 4. Cleaning filter plate; 5. Bracket; 6. Water storage tower; 7. Heat exchanger; 8. Exhaust gas pipeline; 9. Condensation treatment equipment; 10. Rotating shaft; 11. Feeding plate; 12. Reducer; 13. Servo motor; 14. Sewage tank; 1401. Sewage chamber; 1402. Water storage chamber; 15. Swirl plate; 16. Drain pipe; 17. Overflow port; 18. Filter; 19. Circulation water pump; 20. First circulation pipeline; 21. Second circulation pipeline; 22. Third circulation pipeline; 23. Stirring motor; 24. Stirring shaft; 25. Stirring assembly; 26. Fixed sleeve; 27. Threaded sleeve; 28. Spring; 29. Skeleton; 30. Isolation net; 31. Connecting rod; 32. Titanium electrode electrolysis module. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to the attached Figure 1 - attached Figure 5 , an apparatus for treating waste materials of road engineering building materials provided by an embodiment of the present invention includes a cleaning tank 1. A regeneration stirring chamber 2 is arranged on one side of the cleaning tank 1, and the two are connected by a waste conveyor 3. A cleaning filter plate 4 is embedded and fixedly connected to the upper part of the cleaning tank 1. The cleaning filter plate 4 adopts an arc-shaped mesh structure with its arc surface facing downwards, and divides the inner cavity of the cleaning tank 1 into an upper chamber 101 and a lower chamber 102 which are distributed up and down. The waste aggregate containing asphalt after crushing and sorting enters the upper chamber 101 above the cleaning filter plate 4 and is immersed in the cleaning liquid in the cleaning tank 1. A bracket 5 is fixedly connected to the top wall of the cleaning tank 1, and a feeding device is arranged at the top of the bracket 5. The waste aggregate in the upper chamber 101 is cleaned by being reciprocally stirred by the feeding device, and the cleaned waste aggregate is dialed into the waste conveyor 3 by the feeding device, and then the waste aggregate is sent into the regeneration stirring chamber 2 through the waste conveyor 3. A water storage tower 6 is arranged outside the cleaning tank 1, and the two are connected by a water circulation mechanism. A heat exchanger 7 is arranged in the water storage tower 6. The exhaust port of the regeneration stirring chamber 2 is communicated with the intake end of the heat exchanger 7 through an exhaust gas pipeline 8, and the exhaust end of the heat exchanger 7 is connected to a condensation treatment device 9.

[0023] The asphalt-containing waste aggregate after crushing and sorting is put into the cleaning tank 1 and lands on the upper surface of the cleaning filter plate 4. At this time, the waste aggregate is immersed in the cleaning liquid. The waste aggregate is reciprocally moved back and forth by the material stirring device, so that the waste aggregate collides with the cleaning liquid. At the same time, during the reciprocating movement, collisions occur between the waste aggregates, between the waste aggregate and the material stirring device, and between the waste aggregate and the cleaning filter plate 4, thereby improving the cleaning efficiency of the impurities on the surface of the waste aggregate. At the same time, the high-temperature waste gas in the regeneration stirring chamber 2 enters the heat exchanger 7 and exchanges heat with the cleaning liquid in the water storage tower 6, so that the temperature of the cleaning liquid rises, further improving the cleaning efficiency, and at the same time achieving the effect of waste utilization and reducing energy consumption. In addition, since the waste gas generated by the asphalt in the waste aggregate through the regeneration process is a pollution source, the waste gas needs to be environmentally treated by means of condensation. Therefore, when the high-temperature waste gas exchanges heat with the cleaning liquid, the temperature of the waste gas decreases. At this time, the waste gas with reduced temperature is input into the condensation treatment device 9 for treatment. On the one hand, the treatment load of the condensation treatment device 9 is reduced, and on the other hand, the energy consumption of the condensation treatment device 9 is reduced.

[0024] The material stirring device includes a rotating shaft 10. The rotating shaft 10 penetrates and is rotatably connected to the top of the support 5. Three annularly equally spaced arrayed material stirring plates 11 are fixedly connected to the outer wall of the rotating shaft 10. One end of the rotating shaft 10 is fixedly connected to a speed reducer 12. The input end of the speed reducer 12 is fixedly connected to a servo motor 13. The outer wall of the servo motor 13 is fixedly connected to the outer wall of the support 5 through a mounting frame.

[0025] Output from the servo motor 13, after being decelerated by the speed reducer 12 to enhance the torque, drives the rotating shaft 10 to rotate, and then drives the material pushing plate 11 to rotate around the rotating shaft 10 as the center. The material pushing plate 11 pushes the waste aggregate to move along the cleaning filter plate 4. Among them, since the cleaning filter plate 4 adopts an arc-shaped mesh structure, the impurities falling off during the rolling of the waste aggregate fall into the lower chamber 102 through the cleaning filter plate 4. It should be noted that because the aggregate is heavy after piling up, in order to ensure its stability during the back-and-forth movement on the cleaning filter plate 4, the material pushing device here adopts a relatively slow pushing speed. At the same time, the arc-shaped structure of the cleaning filter plate 4 is also to reduce the energy consumption of the material pushing device. During the pushing process, when the material pushing plate 11 pushes the waste aggregate to the high point on one side of the cleaning filter plate 4, it immediately rotates in the reverse direction, then the waste aggregate rolls down along the arc surface of the cleaning filter plate 4 under the action of gravity, thus eliminating the action of the material pushing plate 11 pushing the waste aggregate in the reverse direction and reducing the energy consumption. In addition, the number of the material pushing plates 11 is 3, and they are arranged in an annular equidistant array. This setting makes the weight distribution of the material pushing device balanced and improves the operation stability. On the other hand, when the material pushing device returns to the correct position, the two lower material pushing plates 11 are respectively located at the highest points on both sides of the cleaning filter plate 4. This spacing makes the material pushing plate 11 not contact the waste aggregate before the waste aggregate falls back to the lowest point of the cleaning filter plate 4 during the reverse rotation, thus avoiding providing power to the waste aggregate during the reverse rotation. Moreover, during feeding and discharging, there will be no interference among the three material pushing plates 11. The plate body of the material pushing plate 11 also needs to be provided with dewatering holes, on the one hand, reducing the resistance of the cleaning liquid to the movement of the material pushing plate 11, and on the other hand, avoiding the material pushing plate 11 pushing out too much cleaning liquid from the cleaning tank 1 during discharging.

[0026] The cleaning tank 1 is placed in the sewage tank 14. The bottom wall of the cleaning tank 1 is a trapezoidal structure, and the height gradually decreases from the middle to both sides. There is a water inlet in the middle, and a swirl plate 15 is installed at the upper opening of the water inlet. There are sewage pipes 16 on both sides, and sewage valves are configured on the pipe bodies of the sewage pipes 16. There are a plurality of overflow ports 17 on the edge of the top wall of the cleaning tank 1. A filter 18 is arranged in the sewage tank 14. The filter 18 divides the inner cavity of the sewage tank 14 into a sewage chamber 1401 and a water storage chamber 1402. The sewage discharged from the overflow port 17 and the sewage pipe 16 enters the sewage chamber 1401, and then flows into the water storage chamber 1402 after being filtered by the filter 18.

[0027] Under the action of the water level difference, the cleaning liquid enters the water inlet at the bottom of the cleaning tank 1 from the water storage tower 6 with a certain pressure, impacts the swirl plate 15, and makes the water flow into the cleaning tank 1 in a vortex manner, so as to further improve the cleaning efficiency of waste aggregates. The impurities washed out pass through the cleaning filter plate 4 and sink into the lower chamber 102, and gather towards the low points on both sides of the lower chamber 102 under the action of the slope. When the accumulation reaches a certain scale, the sewage discharge valve opens, and the impurities flow into the sewage chamber 1401 under the impact of the water flow. At the same time, the impurities floating on the surface of the cleaning liquid in the upper chamber 101 fall into the sewage chamber 1401 from the overflow port 17 along with the rise of the liquid level and the disturbance of the material pushing device. The cleaning liquid in the sewage chamber 1401 is filtered by the filter 18 and then flows into the water storage chamber 1402 for storage.

[0028] The water circulation mechanism includes a circulation water pump 19. The water pumping end of the circulation water pump 19 is connected to the water storage chamber 1402 through a first circulation pipeline 20, and the water outlet end is connected to the inside of the water storage tower 6 through a second circulation pipeline 21. The water outlet of the water storage tower 6 is connected to the water inlet in the middle of the cleaning tank 1 through a third circulation pipeline 22.

[0029] The circulation water pump 19 pumps the filtered cleaning liquid in the water storage chamber 1402 into the water storage tower 6, thereby realizing the recycling of the cleaning liquid.

[0030] A stirring motor 23 is fixedly connected to the center of the top end of the regeneration stirring chamber 2. A feeding port and an exhaust port are respectively arranged on both sides. The output end of the stirring motor 23 is fixedly connected to a stirring shaft 24. The stirring shaft 24 is perpendicular to the inside of the regeneration stirring chamber 2. An opening and closing mechanism is arranged on the upper part of the stirring shaft 24, and a stirring component 25 is arranged on the lower part. The opening and closing mechanism divides the inner cavity of the regeneration stirring chamber 2 into a preheating chamber 201 and a stirring chamber 202. The preheating chamber 201 is located above the stirring chamber 202. A sandwich layer 203 is arranged in the chamber body of the regeneration stirring chamber 2. The sandwich layer 203 surrounds the stirring chamber 202, and a dual-frequency microwave generator is arranged in the sandwich layer 203. The materials in the stirring chamber 202 are heated by the dual-frequency microwave generator, and the generated hot air flow enters the preheating chamber 201 through the opening and closing mechanism and preheats the waste aggregate in the preheating chamber 201. The opening and closing mechanism includes a fixed sleeve 26 and a threaded sleeve 27. Both are sleeved on the outer wall of the stirring shaft 24, and the fixed sleeve 26 is located above the threaded sleeve 27. A spring 28 is arranged between the fixed sleeve 26 and the threaded sleeve 27. The inner wall of the fixed sleeve 26 is rotatably connected to the outer wall of the stirring shaft 24. A plurality of skeletons 29 are rotatably connected around the outer wall of the fixed sleeve 26. The plurality of skeletons 29 are connected to each other by a separation net 30 to form an umbrella-shaped structure. External threads are arranged on the outer wall of the stirring shaft 24. The threaded sleeve 27 is composed of an inner sleeve and an outer sleeve that are nested and rotatably connected to each other. Internal threads corresponding to the external threads are arranged on the inner wall of the inner sleeve. A connecting rod 31 is connected between the outer wall of the outer sleeve and the bottom of the skeleton 29. When the stirring motor 23 drives the stirring shaft 24 to stir, the inner sleeve of the threaded sleeve 27 is disengaged from the external threads, and the threaded sleeve 27 is located above the external threads. At this time, the plurality of skeletons 29 are synchronously unfolded, and the separation net 30 isolates the preheating chamber 201 and the stirring chamber 202. When the stirring motor 23 drives the stirring shaft 24 to rotate in the reverse direction, under the action of the spring 28, the inner sleeve of the threaded sleeve 27 is screwed with the external threads, so that the threaded sleeve 27 moves downward, and the skeletons 29 are pulled to close through the connecting rod 31.

[0031] According to the specifications of the waste aggregate, a regeneration agent, new asphalt and new aggregate are added in proportion. In the stirring chamber 202, the stirring shaft 24 fully mixes and stirs the above materials, and with the heating of the dual-frequency microwave generator, finally a qualified asphalt mixture is formed.

[0032] The dual-frequency microwave generator adopts a parallel layout of 2.45 GHz / 5.8 GHz double magnetrons, realizes dual-frequency synthesis through a 3 dB directional coupler, the voltage standing wave ratio < 1.5, is equipped with two independent high-voltage power supply modules, and the DC pulsation rate ≤ 1%. It has been verified that its penetration depth is increased by 2.3 times, thereby greatly improving the regeneration rate and effect of the waste aggregate.

[0033] The washed waste aggregate enters the regeneration mixing chamber 2 from the feeding port through the waste conveyor 3. Blocked by the isolation net 30 in the unfolded state, it is in the preheating chamber 201. At the same time, the dual-frequency microwave generator heats the materials in the mixing chamber 202. The generated hot air flow passes through the isolation net 30 and enters the preheating chamber 201, preheating the waste aggregate in the preheating chamber 201, raising the initial temperature of the raw materials from room temperature to 80°C, reducing energy consumption by 35%, and realizing the drying operation of the waste aggregate. When the asphalt mixture in the mixing chamber 202 is completed, the asphalt mixture is discharged from the discharge port at the bottom of the regeneration mixing chamber 2. Then, the mixing motor 23 drives the mixing shaft 24 to rotate reversely. Under the action of the spring 28, the inner sleeve of the threaded sleeve 27 is screwed with the external thread, causing the threaded sleeve 27 to move downward. The framework 29 is pulled to close through the connecting rod 31. The waste aggregate in the preheating chamber 201 falls into the mixing chamber 202. Then, according to the specifications of the waste aggregate, the regenerant, new asphalt, and new aggregate are added proportionally. At this time, the mixing motor 23 drives the mixing shaft 24 to rotate forward for mixing. The threaded sleeve 27 moves upward under the action of the forward rotation of the mixing shaft 24, pushing the framework 29 to unfold through the connecting rod 31. The isolation net 30 unfolds synchronously with the framework 29, finally completely isolating the preheating chamber 201 from the mixing chamber 202. At this time, due to the continuous forward rotation of the mixing shaft 24, the threaded sleeve 27 continuously moves upward until its inner sleeve is disengaged from the external thread, so that the mixing process will not affect the state of the isolation net 30.

[0034] At the same time, it is also possible to choose to remove the spring 28. Because the isolation net 30 has a tendency to close under the pressure of the waste aggregate above it, that is, the same effect as the spring 28, when the mixing shaft 24 rotates reversely, the inner sleeve of the threaded sleeve 27 and the external thread of the mixing shaft 24 can be quickly screwed together.

[0035] Since the isolation net 30 is similar to an umbrella structure, when it closes, the inclined surface enables the waste aggregate to fall fully, avoiding the waste aggregate remaining on the isolation net 30.

[0036] A titanium electrode electrolysis module 32 is arranged on the bottom of the arc surface of the cleaning filter plate 4 facing the bottom wall side of the cleaning tank 1. The plate body of the substrate of the titanium electrode electrolysis module 32 adopts a honeycomb porous structure, and the cross-section of the substrate is V-shaped.

[0037] TA1 / TA2 pure titanium plates are used as the substrates of the titanium electrode electrolysis module 32. After sandblasting treatment, the surface roughness is controlled at Ra 3.2 - 6.3 μm, effectively increasing the adhesion of the active coating. The substrates are processed into a honeycomb-like porous structure to enhance the electrolyte penetration and bubble escape efficiency. And an IrO2-Ta2O5-SnO2 ternary mixed oxide (molar ratio 3:1:1) is coated, and a nanocrystalline coating is formed by sintering at 480 °C through the thermal decomposition method. Through the instantaneous high current density of the high-frequency pulse, the titanium electrode electrolysis module 32 generates a group of hydroxyl radical bubbles with a diameter of 50 nm, which are used to decompose the oil stains and heavy metal ions on the surface of waste aggregates.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for treating waste materials of road engineering building materials, including a cleaning tank (1), characterized in that, A regeneration mixing chamber (2) is provided on one side of the cleaning tank (1), and the two are connected via a waste conveyor (3). A cleaning filter plate (4) is embedded in and fixedly connected to the upper part of the cleaning tank (1). The cleaning filter plate (4) adopts an arc-shaped mesh structure, with its arc surface facing downward, and divides the inner cavity of the cleaning tank (1) into an upper chamber (101) and a lower chamber (102) distributed up and down. The asphalt-containing waste aggregate after crushing and sorting enters the upper chamber (101) above the cleaning filter plate (4) and is immersed in the cleaning liquid in the cleaning tank (1). The top wall of the cleaning tank (1) is fixedly connected to a bracket (5), and the bracket (5) is The upper chamber (101) is provided with a material shifting device, and the waste aggregate in the upper chamber (101) is cleaned by the material shifting device through reciprocating movement. The cleaned waste aggregate is shifted into the waste conveyor (3) by the material shifting device, and then the waste aggregate is sent into the regeneration mixing chamber (2) through the waste conveyor (3). A water storage tower (6) is provided outside the cleaning tank (1), and the two are connected through a water circulation mechanism. A heat exchanger (7) is provided in the water storage tower (6). The exhaust port of the regeneration mixing chamber (2) is connected to the air inlet end of the heat exchanger (7) through an exhaust gas pipeline (8), and the exhaust end of the heat exchanger (7) is connected to a condensation treatment device (9).

2. The waste treatment device for road engineering building materials according to claim 1, wherein, The material-dispensing device comprises a rotating shaft (10), the rotating shaft (10) is passed through and rotatably connected to the top of the bracket (5), three material-dispensing plates (11) in an annular equidistant array are fixedly connected around the outer wall of the rotating shaft (10), one end of the rotating shaft (10) is fixedly connected to a reducer (12), the input end of the reducer (12) is fixedly connected to a servo motor (13), and the outer wall of the servo motor (13) is fixedly connected to the outer wall of the bracket (5) via a mounting frame.

3. A road engineering building material waste treatment device according to claim 1, characterized in that, The cleaning tank (1) is placed in a sewage tank (14). The bottom wall of the cleaning tank (1) is a trapezoidal structure, the height of which gradually decreases from the middle to the two sides. A water inlet is provided in the middle, and a swirl plate (15) is installed at the upper opening of the water inlet. Sewage pipes (16) are provided on both sides, and a sewage valve is arranged on the pipe body of the sewage pipe (16). A plurality of overflow ports (17) are provided on the edge of the top wall of the cleaning tank (1).

4. The waste treatment device for road engineering building materials according to claim 3, characterized in that, A filter (18) is provided in the sewage tank (14), and the filter (18) divides the inner cavity of the sewage tank (14) into a sewage cavity (1401) and a water storage cavity (1402). Sewage discharged from the overflow port (17) and the sewage pipe (16) enters the sewage cavity (1401), and then flows into the water storage cavity (1402) after being filtered by the filter (18).

5. The waste treatment device for road engineering building materials according to claim 4, characterized in that, The water circulation mechanism comprises a circulating water pump (19), the water pumping end of the circulating water pump (19) is connected to the water storage chamber (1402) through a circulating pipe 1 (20), the water outlet end is connected to the inside of a water storage tower (6) through a circulating pipe 2 (21), and the water outlet of the water storage tower (6) is connected to the water inlet in the middle of the cleaning tank (1) through a circulating pipe 3 (22).

6. A waste treatment device for road engineering building materials according to claim 1, characterized in that, A stirring motor (23) is fixedly connected to the center of the top end of the regeneration stirring chamber (2). A feeding port and an exhaust port are respectively arranged on both sides. The output end of the stirring motor (23) is fixedly connected to a stirring shaft (24). The stirring shaft (24) is perpendicular to the inside of the regeneration stirring chamber (2). An opening and closing mechanism is arranged on the upper part of the stirring shaft (24), and a stirring component (25) is arranged on the lower part. The opening and closing mechanism divides the inner cavity of the regeneration stirring chamber (2) into a preheating chamber (201) and a stirring chamber (202). The preheating chamber (201) is located above the stirring chamber (202). A sandwich layer (203) is arranged in the chamber body of the regeneration stirring chamber (2). The sandwich layer (203) surrounds the stirring chamber (202), and a dual-frequency microwave generator is arranged in the sandwich layer (203). The materials in the stirring chamber (202) are heated by the dual-frequency microwave generator, and the generated hot air flow passes through the opening and closing mechanism and enters the preheating chamber (201), and preheats the waste aggregate in the preheating chamber (201).

7. A road engineering building material waste treatment device according to claim 6, characterized in that, The opening and closing mechanism includes a fixed sleeve (26) and a threaded sleeve (27). Both are sleeved on the outer wall of the stirring shaft (24), and the fixed sleeve (26) is located above the threaded sleeve (27). A spring (28) is arranged between the fixed sleeve (26) and the threaded sleeve (27). The inner wall of the fixed sleeve (26) is rotatably connected to the outer wall of the stirring shaft (24). A plurality of skeletons (29) are rotatably connected to the outer wall of the fixed sleeve (26). The plurality of skeletons (29) are connected by a separation net (30) to form an umbrella-shaped structure. External threads are arranged on the outer wall of the stirring shaft (24). The threaded sleeve (27) is composed of an inner sleeve and an outer sleeve that are nested and rotatably connected to each other. Internal threads corresponding to the external threads are arranged on the inner wall of the inner sleeve. A connecting rod (31) is connected between the outer wall of the outer sleeve and the bottom of the skeleton (29). When the stirring motor (23) drives the stirring shaft (24) to stir, the inner sleeve of the threaded sleeve (27) is disengaged from the external threads, and the threaded sleeve (27) is located above the external threads. At this time, the plurality of skeletons (29) are synchronously unfolded, and the separation net (30) separates the preheating chamber (201) from the stirring chamber (202). When the stirring motor (23) drives the stirring shaft (24) to rotate in the reverse direction, under the action of the spring (28), the inner sleeve of the threaded sleeve (27) is screwed with the external threads, so that the threaded sleeve (27) moves downward, and the skeleton (29) is pulled to close through the connecting rod (31).

8. A road engineering building material waste treatment device according to claim 1, characterized in that, A titanium electrode electrolysis module (32) is arranged on the bottom of the arc surface of the cleaning filter plate (4) facing the bottom wall of the cleaning tank (1). The substrate of the titanium electrode electrolysis module (32) is of a honeycomb porous structure, and the cross section of the substrate is V-shaped.

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