Phase-change asphalt pavement reclaimed material processing device for highway maintenance in cold region

Abstract

The utility model relates to a phase change asphalt pavement reclaimed material processing device for road maintenance in cold regions, which comprises a first stirring tank, a loading device and a film forming device, the film forming device comprises a second stirring tank and a spraying device, the loading device is arranged below the first stirring tank, and the spraying device is arranged below the second stirring tank. A cooling device is arranged between the object carrying device and the second stirring tank, the spraying device is arranged at the upper end of the second stirring tank, a material receiving groove is formed between the object carrying device and the cooling device, the front end of the material receiving groove is located below the object carrying device, and the tail end of the material receiving groove is connected with the cooling device; according to the utility model, the processing process is simple and efficient, the phase change material liquid and the solid material can be uniformly mixed at first, and then the mixture is stirred and sprayed to form a film, so that manual participation is reduced in the whole process, the construction efficiency is improved, the uniform film formation is ensured, and the construction quality is improved.

Description

Technical Field

[0001] The utility model relates to the field of road construction, in particular to a phase-change asphalt road surface recycled material processing device for cold-region highway maintenance. Background Art

[0002] Frozen soil in cold regions has good antifreeze performance, anti-variation performance, thermal insulation performance and high strength under stable and low temperature conditions. However, temperature fluctuations caused by seasonal changes are likely to seriously damage the original performance of frozen soil and thus affect the quality of construction projects. How to effectively maintain the good performance of frozen soil in cold regions and prevent the destruction of frozen soil in construction operations caused by warming temperatures during actual cold region highway maintenance is one of the urgent issues that need to be solved in cold region highway maintenance projects. In low temperature environment, frozen soil has good working performance, but there will be inevitable unevenness and changes in mechanical properties during the construction process. Especially with the change of ambient temperature, frozen soil will undergo volume changes and structural changes during freezing and thawing, resulting in changes in its mechanical properties. Its strength and stability will weaken during the thawing process, which is easy to cause settlement and deformation, affecting the maintenance of cold-region highways. Therefore, the use of phase change materials to adjust the performance of frozen soil on cold-region highways mainly regulates its freezing and thawing process, controls soil moisture, and controls soil expansion and contraction, while achieving energy conservation and environmental protection. During the thawing process of frozen soil, the endothermic effect of phase change materials can slow down the thawing speed of frozen soil, thereby reducing the risk of soil settlement and surface collapse. At the same time, the endothermic effect of phase change materials can slow down the release rate of soil moisture and reduce water loss. During the freezing process of frozen soil, the exothermic effect of phase change materials can provide additional heat, promote the freezing process, and enhance the stability of the foundation. The exothermic effect of phase change materials can promote the freezing of soil moisture, prevent the infiltration and leakage of soil moisture, and reduce the risk of groundwater level decline.

[0003] However, the recycled coarse materials from construction waste that are only added with phase change materials are very likely to fall off during the later construction, maintenance and project investment stages, thereby losing a series of functions and affecting the stability of the engineering structure. The atomization film-forming process can stably encapsulate the phase change material in the pores of the raw materials to achieve its high strength and high stability. The existing atomization film-forming process is to mix the solid material and the phase change material liquid evenly and then sprinkle it on the asphalt pavement, and then atomize and spray the film on the surface of the paved mixture. Not only is the work efficiency low, construction cannot be carried out on rainy days, affecting the construction efficiency, but the coverage is also easily uneven, affecting the quality of the construction project. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model proposes a phase change asphalt pavement recycled material processing device for cold region highway maintenance. The processing process is simple and efficient. The phase change material liquid and solid material can be evenly mixed first, and then the mixture is sprayed while stirring to form a film. The whole process reduces manual participation, improves construction efficiency, ensures uniform film formation, ensures that the phase change material can stably exert its efficacy, and improves construction quality.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model proposes a phase change asphalt pavement recycled material processing device for cold region highway maintenance, comprising a first stirring tank, a loading device and a film forming device, wherein the film forming device comprises a second stirring tank and a spray device, the loading device is arranged below the first stirring tank, a cooling device is arranged between the loading device and the second stirring tank, the spray device is arranged at the upper end of the second stirring tank, a material receiving trough is arranged between the loading device and the cooling device, the front end of the material receiving trough is located below the loading device, and the rear end is connected to the cooling device.

[0007] Furthermore, the loading device includes a feed port and a box body below it, the feed port is located below the discharge port of the first stirring tank, and the box body is provided with a contraction pressure plate, a sloped mouth and a negative pressure zone, the feed port is connected to the upper end of the box body through a supporting steel frame, the negative pressure zone is located at the lower part of the box body, the contraction pressure plate is arranged above the negative pressure zone, and the sloped mouth is arranged between the negative pressure zone and the contraction pressure plate.

[0008] Furthermore, a movable cover is arranged at the upper end of the negative pressure zone, and a horizontal movable slide is arranged at the lower end. Sponge boards are evenly spaced at the upper end of the horizontal movable slide, and the intervals between the sponge boards correspond one to one to the lower end of the slope mouth.

[0009] Furthermore, the side wall of the box is provided with a vibrator

[0010] Furthermore, the cooling device comprises a cooling channel, the front end of the cooling channel is connected to the rear end of the material receiving trough, and the rear end is communicated with the interior of the second stirring tank.

[0011] Furthermore, the cooling channel is spiral.

[0012] Furthermore, the tail end of the cooling channel is lower than the front end, and a line connecting the front end and the tail end of the cooling channel forms an angle of 0 to 45 degrees with the vertical direction.

[0013] Furthermore, the nozzle of the spray device passes through the top wall of the second stirring tank and is connected to the interior of the second stirring tank.

[0014] Furthermore, a heating device is provided on the side wall of the second stirring tank.

[0015] Furthermore, the tail end of the receiving trough is lower than the front end, and the angle between the receiving trough and the horizontal direction is 40-60 degrees.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) The utility model uses a first stirring tank to uniformly mix the phase change material liquid and the solid material, and then sprays the mixture in a second stirring tank while stirring to form a film. The raw materials enter the first stirring tank and come out from the discharge port of the second stirring tank, and can be directly used for paving the road without the need for subsequent spraying of the liquid film, thereby improving the construction efficiency and not being affected by rainy days. The mixture is stirred and sprayed in the second stirring tank, which can ensure that the film on the surface of the mixture is uniform. The phase change material is closely attached to the construction waste raw materials and stably changes its performance, which can significantly improve the construction quality.

[0018] (2) The height of the first stirring tank, the loading device and the film forming device of the utility model is gradually lowered, which can ensure that the material falls freely under the action of gravity, reduce manual participation and reduce labor;

[0019] (3) When the material of the utility model passes through the loading device, before the negative pressure area is evacuated, the sponge board will absorb the phase change material liquid that flows out. When evacuating, the phase change material liquid in the sponge board can be sucked out and mixed with the solid material again, and the raw material is processed twice, so that the phase change material liquid in the mixture is sufficient to ensure the construction quality;

[0020] (4) A cooling device is provided between the film-forming device and the material borrowing tank of the utility model. Before spraying the film on the surface of the mixture, the mixture is cooled down first, so that the phase change material liquid can be solidified, thereby facilitating film formation on the surface of the mixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the processing device of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the object carrying device of the utility model;

[0023] Figure numerals: 1. first stirring tank, 2. loading device, 201. feed port, 202. box body, 203. contraction pressure plate, 204. slope mouth, 205. negative pressure zone, 206. movable cover, 207. horizontally movable slide plate, 208. sponge board, 3. film forming device, 301. second stirring tank, 302. spray device, 4. cooling channel, 5. receiving trough. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] refer to Figure 1 and Figure 2 The utility model proposes a phase change asphalt pavement recycled material processing device for cold region highway maintenance, comprising a first stirring tank 1, a loading device 2 and a film forming device 3, the film forming device 3 comprising a second stirring tank 301 and a spray device 302, a cooling device is arranged between the loading device 2 and the second stirring tank 301, a material receiving trough 5 is arranged between the loading device 2 and the cooling device, the loading device 2 is located below the discharge port of the first stirring tank 1, the front end of the material receiving trough 5 is located at the lower end of the loading device 2, the nozzle of the spray device 302 passes through the top wall of the second stirring tank 301 and is connected with the inside of the second stirring tank 301, the front end of the material receiving trough 5 is located below the loading device 2, and the tail end is connected with the cooling device.

[0026] In this embodiment, the solid material and the phase change material liquid are added to the first stirring tank for stirring and mixing. After being uniformly mixed, the mixture enters the loading device 2 through the discharge port of the first stirring tank 1. After the loading device 2 performs secondary processing on the mixture, the mixture contains as much phase change material liquid as possible, and the mixture is discharged from the lower end of the box 202. After the mixture is buffered by the material receiving trough 5, it flows into the cooling device. After the cooling device cools the mixture, the mixture flows from the cooling device into the film forming device 3. The film forming device 3 sprays the mixture while stirring it, so that the surface of the mixture is uniformly filmed. The sprayed material is discharged from the film forming device 3 for standby use. The entire processing process is simple and efficient, with less human participation, which can improve the efficiency of highway maintenance construction in cold regions. The surface of the mixture is uniformly filmed, and the internal phase change material content is sufficient, which can improve the construction quality. Pre-filming on the surface of the mixture can prevent the construction from being affected by rainy days, further improving the construction progress.

[0027] Further, refer to Figure 2The loading device 2 includes a feed port 201 and a box body 202 below the feed port 201, wherein a contraction pressure plate 203, a sloped opening 204 and a negative pressure zone 205 are arranged in the box body 202, wherein the feed port 201 is connected to the upper end of the box body 202 through a supporting steel frame, wherein the negative pressure zone 205 is located at the lower part of the box body 202, wherein the contraction pressure plate 203 is arranged above the negative pressure zone 205, wherein the contraction pressure plate 203 can slide through the side wall of the box body 202, wherein the sloped opening 204 is arranged between the negative pressure zone 205 and the contraction pressure plate 203, wherein a movable cover 206 is arranged at the upper end of the negative pressure zone 205, and a horizontally movable slide plate 207 is arranged at the lower end, wherein sponge plates 208 are evenly spaced at the upper end of the horizontally movable slide plate 207, wherein the intervals between the sponge plates 208 correspond one to one to the lower end of the sloped opening 204, wherein a vibrator is arranged on the side wall of the box body 202, and the thickness of the sponge plates 208 in the natural state is preferably 5 cm.

[0028] In this embodiment, the negative pressure area 205 is connected to the vacuum machine, and the mixed material enters the vibrating loading box through the feed port 201 of the loading device 2. At the same time, the vibrator is started to make the material more evenly distributed on the shrinking pressure plate 203. When the mixed material on the shrinking pressure plate 203 reaches a set amount, the vibrator stops working, the movable cover 206 of the negative pressure area 205 is opened, and the shrinking pressure plate 203 passes through the side wall of the box body 202 through the horizontal moving pulley and starts to slide in a direction parallel to the slope opening 204. The side wall of the box 202 squeezes the mixture into the sloped opening 204, and the mixture is evenly distributed between the sponge plates 208 through the sloped opening 204. The sponge plates 208 absorb the outflowing phase change material liquid, and the movable cover 206 is closed. The negative pressure area 205 starts to pump negative pressure, and the phase change material liquid in the sponge plate 208 and the mixture are mixed for the second time. After the secondary mixing is completed, the negative pressure area 205 stops pumping negative pressure, and the horizontal movable slide plate 207 is opened, and the mixture flows into the receiving trough 5 from the lower end of the box 202.

[0029] Furthermore, the cooling device includes a cooling channel 4, the temperature of the cooling channel 4 is preferably 5-8°C, the front end of the cooling channel 4 is connected to the rear end of the material receiving trough 5, and the rear end is connected to the interior of the second stirring tank 301, the rear end of the material receiving trough 5 is lower than the front end, and the angle between the material receiving trough 5 and the horizontal direction is 40~60; the rear end of the cooling channel 4 is lower than the front end, and the line connecting the front end and the tail end of the cooling end forms an angle of 0~45° with the vertical direction.

[0030] In this embodiment, the mixture is first buffered in the material receiving trough 5 and then cooled in the cooling channel 4. The buffering process can also promote the cooling of the mixture. The material receiving trough 5 and the cooling channel are inclined, and the mixture can flow downward autonomously under the action of gravity, thereby reducing human intervention as much as possible.

[0031] Furthermore, the cooling channel 4 is spiral, which can increase the distance and time that the mixture travels in the cooling channel 4, thereby improving the cooling efficiency.

[0032] Furthermore, a heating device is provided on the side wall of the second stirring tank 301, which can heat the second stirring tank 301 to ensure that the film-forming material stably encapsulates the mixture in liquid form to achieve a stable curing effect. In this embodiment, the temperature in the second stirring tank is preferably 50±2°C.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A phase change asphalt pavement recycled material processing device for cold region highway maintenance, characterized in that: The invention comprises a first stirring tank (1), a loading device (2) and a film-forming device (3), wherein the film-forming device (3) comprises a second stirring tank (301) and a spray device (302), wherein the loading device (2) is arranged below the first stirring tank (1), a cooling device is arranged between the loading device (2) and the second stirring tank (301), the spray device (302) is arranged at the upper end of the second stirring tank (301), a material receiving trough (5) is arranged between the loading device (2) and the cooling device, the front end of the material receiving trough (5) is located below the loading device (2), and the rear end is connected to the cooling device.

2. According to claim 1, a phase change asphalt pavement recycled material processing device for cold region highway maintenance is characterized in that: The loading device (2) comprises a feed port (201) and a box body (202) below the feed port (201), the feed port (201) being located below the discharge port of the first stirring tank (1), the box body (202) being provided with a contraction pressure plate (203), a sloped opening (204) and a negative pressure zone (205), the feed port (201) being connected to the upper end of the box body (202) via a supporting steel frame, the negative pressure zone (205) being located at the lower part of the box body (202), the contraction pressure plate (203) being provided above the negative pressure zone (205), and the sloped opening (204) being provided between the negative pressure zone (205) and the contraction pressure plate (203).

3. According to claim 2, a phase change asphalt pavement recycled material processing device for cold region highway maintenance is characterized in that: The negative pressure zone (205) is provided with a movable cover (206) at the upper end and a horizontal movable slide plate (207) at the lower end. Sponge plates (208) are evenly spaced at the upper end of the horizontal movable slide plate (207), and the intervals between the sponge plates (208) correspond one to one with the lower end of the slope opening (204).

4. According to claim 2, a phase change asphalt pavement recycled material processing device for cold region highway maintenance is characterized in that: A vibrator is provided on the side wall of the box body (202).

5. According to claim 1, a phase change asphalt pavement recycled material processing device for cold region highway maintenance is characterized in that: The cooling device comprises a cooling channel (4), the front end of the cooling channel (4) is connected to the rear end of the material receiving trough (5), and the rear end is communicated with the interior of the second stirring tank (301).

6. A phase change asphalt pavement recycled material processing device for cold region highway maintenance according to claim 5, characterized in that: The cooling channel (4) is spiral.

7. The phase change asphalt pavement recycled material processing device for cold region highway maintenance according to claim 5, characterized in that: The rear end of the cooling channel (4) is lower than the front end, and a line connecting the front end and the rear end of the cooling channel (4) forms an angle of 0 to 45 degrees with the vertical direction.

8. The phase change asphalt pavement recycled material processing device for cold region highway maintenance according to claim 1, characterized in that: The spray head of the spray device (302) passes through the top wall of the second stirring tank (301) and is connected to the interior of the second stirring tank (301).

9. The phase change asphalt pavement recycled material processing device for cold region highway maintenance according to claim 1, characterized in that: The side wall of the second stirring tank (301) is provided with a heating device.

10. The phase change asphalt pavement recycled material processing device for cold region highway maintenance according to claim 1, characterized in that: The rear end of the material receiving trough (5) is lower than the front end, and the angle between the material receiving trough (5) and the horizontal direction is 40-60°.

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