Hot in-place recycling asphalt flue gas cooling device

Abstract

The utility model provides a hot in-place recycling asphalt flue gas cooling device, and relates to the technical field of asphalt equipment. The hot in-place recycling asphalt flue gas cooling device comprises a collecting cover, a connecting cavity is arranged on the collecting cover, the connecting cavity is connected with a spraying part through a plurality of flue gas conveying pipes, the spraying part is provided with a heat dissipation structure, the spraying part is connected with a negative pressure fan, and the negative pressure fan is connected with an adsorption device. The collecting cover is arranged on heated asphalt in a covering mode, smoke generated by the asphalt is conveyed to the spraying part through the collecting cover and the smoke conveying pipe, the temperature of the smoke is reduced through spraying of multiple smoke, the activity of volatile matter is reduced, and meanwhile some fine mist particles such as tar are adsorbed. A plurality of spraying pipes are arranged on the spraying chamber, the spraying pipes spray water curtains, the spraying pipes are connected with a water conveying pipe, the water conveying pipe is arranged outside the spraying chamber, a water tank is arranged outside the spraying chamber, a first water pump is arranged on the water tank and connected with the water conveying pipe, and the water inlet end of the first water pump extends into the water tank. A plurality of spraying pipes are used for spraying, so that a plurality of layers of water curtains are formed, and the flue gas treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt equipment, in particular to a fume cooling device for hot-in-situ asphalt regeneration. Background Art

[0002] In-situ hot-regeneration (HIR) is a preventative maintenance technique primarily used for the repair and maintenance of asphalt pavements. This technology uses specialized equipment to heat and mill the old asphalt pavement on-site, then incorporates new asphalt, mixed materials, and regeneration agents. Through high-temperature mixing, paving, and compaction, the old pavement is regenerated in one step. This technology can be categorized into various forms, including remixing, overlaying, and shaping.

[0003] When performing in-situ hot regeneration on asphalt, the asphalt needs to be heated. During the heating process, a large amount of flue gas is generated. The asphalt flue gas is treated by adsorption method, but the temperature of the asphalt flue gas is relatively high and needs to be cooled.

[0004] Therefore, in order to solve the above problems, an in-situ hot regeneration asphalt flue gas cooling device is proposed. Utility Model Content

[0005] Aiming at the deficiencies of the prior art, the utility model develops an on-site hot regeneration asphalt flue gas cooling device, which can perform cooling pretreatment on the asphalt flue gas.

[0006] The technical solution of the utility model to solve the technical problem is: an on-site hot regeneration asphalt flue gas cooling device, including a collecting hood, a connecting cavity is provided on the collecting hood, the connecting cavity is connected to a spray part through multiple smoke pipes, the spray part is provided with a heat dissipation structure, the spray part is connected to a negative pressure fan, and the negative pressure fan is connected to an adsorption device.

[0007] The collecting hood is buckled on the heated asphalt. The smoke generated by the asphalt is transported to the spraying part through the collecting hood and the smoke pipe. The smoke temperature is lowered by spraying multiple smoke, and the activity of volatile substances is reduced. At the same time, some fine mist particles such as tar are adsorbed. The adsorption device uses adsorption method for purification.

[0008] Preferably, the spray part includes a spray chamber, a spray pipe, a water pipe, a water tank and a first water pump. Multiple spray pipes are arranged on the spray chamber, the spray pipes spray a water curtain, multiple spray pipes are connected to the water pipe, the water pipe is arranged outside the spray chamber, a water tank is arranged outside the spray chamber, a first water pump is arranged on the water tank, the first water pump is connected to the water pipe, and the water inlet end of the first water pump penetrates into the water tank.

[0009] Spraying through multiple spray pipes forms a multi-layer water curtain to improve the treatment effect of flue gas.

[0010] Preferably, the spray part also includes a return pipe, a water injection port and a second water pump. The second water pump is arranged on the water tank, the second water pump is connected to the return pipe, the return pipe extends into the interior of the spray chamber, the second water pump is connected to the water tank, and a water injection port is arranged on the water tank.

[0011] The cooling water in the spray chamber is returned to the water tank through the return pipe and the second water pump, realizing the recycling of water resources.

[0012] Preferably, the spray part also includes a baffle, air holes and a smoke conveying pipe. The baffle is vertically arranged in the spray chamber, the baffle is perpendicular to the direction of smoke flow, multiple air holes are arranged on the baffle, and a gap is set between the baffle and the bottom of the spray chamber. A negative pressure pipe is arranged in the spray chamber, and the negative pressure pipe is connected to the negative pressure fan.

[0013] By setting up baffles and air holes, the baffles block the smoke, causing the smoke to form a vortex, breaking up the smoke, extending the time the smoke stays in the spray chamber, and improving the spraying effect.

[0014] Preferably, the heat dissipation structure includes a heat dissipation cavity, heat sinks, ventilation grooves and heat dissipation fans. The heat dissipation cavity is provided in the water tank, multiple heat sinks are vertically provided in the heat dissipation cavity, multiple heat dissipation fans are provided on the heat dissipation cavity, and ventilation grooves are provided at the lower part of the heat dissipation cavity, and the ventilation grooves are perpendicular to the heat sinks.

[0015] By setting up the heat sink, the temperature of the cooling water in the water tank is transferred to the heat sink. Under the action of the cooling fan, the air flow passes through the ventilation slot and the heat sink to the cooling fan, thereby achieving the purpose of heat dissipation.

[0016] Preferably, a connecting pipe is provided on the collecting hood, a first support plate is provided on the outside of the connecting pipe, a connecting cavity is sleeved on the connecting pipe, a second support plate is provided at the lower end of the connecting cavity, the first support plate is connected to the second support plate, a plurality of smoke conveying pipes are provided on the connecting cavity, and the other end of the smoke conveying pipes is connected to the spray chamber.

[0017] The connection cavity is provided to facilitate the disassembly and movement of the collection cover.

[0018] The effects provided in the content of the utility model are only the effects of the embodiments, rather than all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0019] The collection hood is buckled on the heated asphalt. The smoke generated by the asphalt is transported to the spraying part through the collection hood and the smoke pipe. The spraying of multiple smoke reduces the smoke temperature and the activity of volatile substances, while absorbing some fine mist particles such as tar.

[0020] By setting up baffles and air holes, the baffles block the smoke, causing the smoke to form a vortex, breaking up the smoke, extending the time the smoke stays in the spray chamber, and improving the spraying effect;

[0021] By setting up the heat sink, the temperature of the cooling water in the water tank is transferred to the heat sink. Under the action of the cooling fan, the air flow passes through the ventilation slot and the heat sink to the cooling fan, thereby achieving the purpose of heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0023] Figure 1 This is a schematic structural diagram of the utility model.

[0024] Figure 2 It is a cross-sectional schematic diagram of the collection cover of the present utility model.

[0025] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model.

[0026] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model.

[0027] In the figure, 1. collecting hood; 2. connecting chamber; 3. smoke conveying pipe; 4. negative pressure fan; 5. spray chamber; 6. spray pipe; 7. water conveying pipe; 8. water tank; 9. first water pump; 10. return pipe; 11. water inlet; 12. second water pump; 13. baffle; 14. air hole; 15. negative pressure pipe; 16. heat dissipation chamber; 17. heat sink; 18. ventilation groove; 19. cooling fan; 20. connecting pipe; 21. first support plate; 22. second support plate. DETAILED DESCRIPTION

[0028] To clearly illustrate the technical features of this solution, the present invention is described in detail below using specific embodiments and accompanying drawings. The following disclosure provides numerous different embodiments or examples for implementing various configurations of the present invention. To simplify the disclosure of the present invention, the following descriptions focus on components and configurations of specific examples. Furthermore, the present invention may repeat reference numerals and / or letters across different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or configurations discussed. It should be noted that the components illustrated in the accompanying drawings are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted to avoid unnecessarily limiting the present invention. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or elements referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0029] like Figures 1 to 4 As shown, a device for cooling flue gas from in-situ hot-regenerated asphalt includes a collection hood 1 with a connecting chamber 2 provided therein. This chamber 2 is connected to a spray section via multiple flue pipes 3. The spray section includes a heat dissipation structure, is connected to a negative pressure blower 4, and is connected to an adsorption device. The collection hood 1 is mounted on the heated asphalt. The flue gas generated by the asphalt is transported to the spray section through the collection hood 1 and flue pipes 3. The spraying of the flue gas reduces the flue gas temperature, reduces the activity of volatile compounds, and simultaneously adsorbs fine mist particles such as tar.

[0030] The spray section includes a spray chamber 5, a spray pipe 6, a water pipe 7, a water tank 8, and a first water pump 9. Multiple spray pipes 6 are installed on the spray chamber 5, spraying a water curtain. Multiple spray pipes 6 are connected to the water pipe 7, which is installed outside the spray chamber 5. A water tank 8 is installed outside the spray chamber 5. A first water pump 9 is installed on the water tank 8 and connected to the water pipe 7. The water inlet of the first water pump 9 extends deep into the water tank 8. Spraying through multiple spray pipes 6 forms a multi-layer water curtain, improving the treatment effect on the flue gas.

[0031] The spray section also includes a return pipe 10, a water injection port 11, and a second water pump 12. The second water pump 12 is provided on the water tank 8 and is connected to the return pipe 10. The return pipe 10 extends deep into the spray chamber 5. The second water pump 12 is connected to the water tank 8, and the water injection port 11 is provided on the water tank 8. The cooling water in the spray chamber 5 is returned to the water tank 8 through the return pipe 10 and the second water pump 12, thereby recycling water resources.

[0032] The spray section also includes a baffle 13, air holes 14, and a negative pressure pipe 15. The baffle 13 is vertically disposed within the spray chamber 5, perpendicular to the direction of smoke flow. Multiple air holes 14 are disposed on the baffle 13, and a gap is formed between the baffle 13 and the bottom of the spray chamber 5. The spray chamber 5 is provided with a negative pressure pipe 15, which is connected to the negative pressure blower 4. The baffle 13 and air holes 14 block the smoke, causing it to form a vortex, breaking it up and extending the time the smoke remains within the spray chamber 5, thereby improving the spraying effect.

[0033] The heat dissipation structure includes a heat dissipation cavity 16, heat sinks 17, ventilation slots 18, and a cooling fan 19. The heat dissipation cavity 16 is provided in the water tank 8. Multiple heat sinks 17 are vertically arranged in the heat dissipation cavity 16. Multiple cooling fans 19 are installed above the heat dissipation cavity 16. Ventilation slots 18 are provided at the bottom of the heat dissipation cavity 16 and are perpendicular to the heat sinks 17. The heat sinks 17 transmit the temperature of the cooling water in the water tank 8 to the heat sinks 17. Under the action of the cooling fan, air flows from the ventilation slots 18 through the heat sinks 17 to the cooling fan 19 for discharge, achieving the purpose of heat dissipation.

[0034] The collection hood 1 is provided with a connecting tube 20, with a first support plate 21 disposed outside the connecting tube 20. The connecting chamber 2 is sleeved on the connecting tube 20, and a second support plate 22 is disposed at the lower end of the connecting chamber 2. The first support plate 21 and the second support plate 22 are connected. Multiple smoke conveying pipes 3 are disposed in the connecting chamber 2, and the other ends of the smoke conveying pipes 3 are connected to the spray chamber 5. The provision of the connecting chamber 2 facilitates the removal and movement of the collection hood 1.

[0035] Working principle: The flue gas generated by the in-situ hot regeneration of asphalt is transported to the spray chamber 5 through the collection hood 1. The multiple spray pipes 6 on the spray chamber 5 spray cooling water. The sprayed cooling water returns to the water tank 8 through the second water pump 12. The water tank 8 is provided with heat sinks 17 and heat dissipation fans 19 to dissipate the cooling water in the water tank 8. The flue gas after spraying is transported to the subsequent flue gas adsorption device through the negative pressure fan 4.

[0036] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it does not limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the utility model.

Claims

1. A device for cooling the flue gas of hot-in-place asphalt regeneration, characterized by: The invention comprises a collecting hood (1), a connecting cavity (2) being provided on the collecting hood (1), the connecting cavity (2) being connected to a spraying part via a plurality of smoke conveying pipes (3), the spraying part being provided with a heat dissipation structure, the spraying part being connected to a negative pressure fan (4), and the negative pressure fan (4) being connected to an adsorption device; The spraying part comprises a spraying chamber (5), a spraying pipe (6), a water pipe (7), a water tank (8) and a first water pump (9). A plurality of spraying pipes (6) are provided on the spraying chamber (5). The spraying pipes (6) spray a water curtain. The plurality of spraying pipes (6) are connected to the water pipe (7). The water pipe (7) is provided outside the spraying chamber (5). A water tank (8) is provided outside the spraying chamber (5). A first water pump (9) is provided on the water tank (8). The first water pump (9) is connected to the water pipe (7). The water inlet end of the first water pump (9) penetrates into the water tank (8).

2. The in-situ hot regeneration asphalt flue gas cooling device according to claim 1 is characterized by: The spraying part further comprises a return water pipe (10), a water injection port (11) and a second water pump (12). The second water pump (12) is provided on the water tank (8). The second water pump (12) is connected to the return water pipe (10). The return water pipe (10) extends deep into the interior of the spraying chamber (5). The second water pump (12) is connected to the water tank (8). The water injection port (11) is provided on the water tank (8).

3. The in-situ hot regeneration asphalt flue gas cooling device according to claim 2, characterized in that: The spray section further comprises a baffle (13), air holes (14) and a negative pressure pipe (15); a baffle (13) is vertically arranged in the spray chamber (5); the baffle (13) is perpendicular to the flow direction of the smoke; a plurality of air holes (14) are arranged on the baffle (13); a gap is arranged between the baffle (13) and the bottom of the spray chamber (5); a negative pressure pipe (15) is arranged in the spray chamber (5); and the negative pressure pipe (15) is connected to the negative pressure fan (4).

4. The in-situ hot regeneration asphalt flue gas cooling device according to claim 1 is characterized by: The heat dissipation structure comprises a heat dissipation cavity (16), heat dissipation fins (17), ventilation grooves (18) and heat dissipation fans (19); the water tank (8) is provided with a heat dissipation cavity (16); a plurality of heat dissipation fins (17) are vertically arranged in the heat dissipation cavity (16); a plurality of heat dissipation fans (19) are arranged on the heat dissipation cavity (16); a ventilation groove (18) is provided at the lower part of the heat dissipation cavity (16); the ventilation groove (18) is perpendicular to the heat dissipation fins (17).

5. The in-situ hot regeneration asphalt flue gas cooling device according to claim 1 is characterized by: A connecting pipe (20) is provided on the collecting cover (1), a first supporting plate (21) is provided on the outside of the connecting pipe (20), the connecting chamber (2) is sleeved on the connecting pipe (20), a second supporting plate (22) is provided at the lower end of the connecting chamber (2), the first supporting plate (21) is connected to the second supporting plate (22), a plurality of the smoke conveying pipes (3) are provided on the connecting chamber (2), and the other ends of the smoke conveying pipes (3) are connected to the spray chamber (5).

Images