CN219433275U - Waste heat recycling device of asphalt mixing station - Google Patents
Waste heat recycling device of asphalt mixing station Download PDFInfo
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- CN219433275U CN219433275U CN202320987664.6U CN202320987664U CN219433275U CN 219433275 U CN219433275 U CN 219433275U CN 202320987664 U CN202320987664 U CN 202320987664U CN 219433275 U CN219433275 U CN 219433275U
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- dust collector
- cyclone dust
- asphalt mixing
- exhaust pipe
- mixing station
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Abstract
The utility model discloses a waste heat recycling device of an asphalt mixing station, which comprises a factory building and the asphalt mixing station arranged in the factory building, wherein the asphalt mixing station comprises a combustor, a first exhaust pipe, a second exhaust pipe and a cyclone dust collector; the top of the plant is closed, the outer end of the first exhaust pipe is arranged at a position close to the roof in the plant, and the inner end of the first exhaust pipe is connected with an air inlet pipe on the side surface of the cyclone dust collector; and the air outlet pipe of the cyclone dust collector is connected to the air inlet fan of the burner through a second exhaust pipe. The utility model can effectively improve the air inlet temperature, thereby improving the flame temperature, saving fuel and ensuring more complete combustion; no additional energy supply is needed; the closed design can make the whole factory building more beautiful, only the treated combustion tail gas is discharged outwards during production, negative air pressure is formed in the factory building, and dust escape is effectively inhibited; and asphalt fume overflowed in the production process is also sucked into a burner for combustion treatment, so that the environmental pollution is reduced.
Description
Technical Field
The utility model relates to the technical field of asphalt production, in particular to a waste heat recycling device of an asphalt mixing station.
Background
Existing asphalt mixing stations are basically of an open design, i.e. the whole equipment is in an external environment. The burner is an important component of the asphalt mixing station and is used for providing heat energy required by drying and heating; for an open design asphalt mixing plant, a great deal of heat energy loss exists in the material heating lifting and production. Specifically, the stone comes out of the heating roller at about 180-190 ℃, the temperature of the heating bin is reduced to 160 ℃ or lower after being lifted and sieved, and the temperature is only about 150 ℃ when the stone is mixed and discharged, and the large temperature reduction is mainly caused by the large volume of the asphalt mixing station and the large scattering area. Taking a 2000 asphalt station as an example, only the lifting and sieving system (without an insulating layer) has a surface area of 200m 2 The above, the heated roller is about 100m 2 The surface temperature is up to 140 ℃, and the heat dissipation area of the flue is more than 200m 2 The surface temperature is 100 ℃ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -radial) stem). In addition, the open design can lead to faster equipment corrosion, shortening equipment life. In addition, in the production of the existing equipment, dust and asphalt fume are inevitably generated and escape, so that the open design is not beneficial to environmental protection.
In addition, in the prior art, some environment-friendly asphalt mixing stations with closed designs exist, but basically are of a 'pseudo-closed' design, a ventilation, heat dissipation and dust removal system must be specially designed, the asphalt mixing station is wholly located indoors, an exhaust window is formed in the top of the asphalt mixing station, hot air is discharged outwards, otherwise, the temperature of the top space is up to 130-150 ℃, the failure rate of an upper lifting and screening motor and other electrical appliances or wires is extremely high, and a maintainer with problems in production cannot go to overhaul in time. Such solutions also fail to address the problem of waste of a large amount of heat.
Disclosure of Invention
In order to solve the problems in the background art, the utility model adopts the following technical scheme:
the waste heat recycling device of the asphalt mixing station comprises a factory building and the asphalt mixing station arranged in the factory building, wherein the asphalt mixing station comprises a combustor, a first exhaust pipe, a second exhaust pipe and a cyclone dust collector;
the top of the plant is closed, the outer end of the first exhaust pipe is arranged at a position close to the roof in the plant, and the inner end of the first exhaust pipe is connected with an air inlet pipe on the side surface of the cyclone dust collector;
and the air outlet pipe of the cyclone dust collector is connected to the air inlet fan of the burner through the second exhaust pipe.
In some embodiments, the cyclone has a cylindrical upper portion and a funnel-shaped lower portion;
the air inlet pipe of the cyclone dust collector is arranged at the top end of the side surface of the cylindrical part of the cyclone dust collector;
the air outlet pipe of the cyclone dust collector is arranged at the center of the top of the cyclone dust collector and extends inwards for a certain distance.
In some embodiments, a receiving box is provided below the cyclone, and a bottom end of the funnel-shaped portion of the cyclone is open and faces the receiving box.
In some embodiments, a transition pipe is further arranged between the cyclone dust collector and the accommodating box, the upper end of the transition pipe is coated on the outer side of the bottom end opening of the cyclone dust collector, and the lower end of the transition pipe is communicated with the interior of the accommodating box;
the bottom end opening of the cyclone dust collector is also provided with an ash discharging cover plate, and the ash discharging cover plate can close or open the bottom end opening of the cyclone dust collector.
In some embodiments, the ash discharging cover plate is integrally a bending plate, and the bending part of the ash discharging cover plate is rotatably arranged on the transition pipe through a rotating shaft;
the dust discharging cover plate is used for closing or opening the bottom end opening of the cyclone dust collector relative to one side of the bending position, and the tail end of the dust discharging cover plate relative to the other side of the bending position is connected with the balancing weight.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model provides waste heat recovery of an asphalt mixing stationCompared with the existing open design and asphalt mixing station with an exhaust window, the device has the advantages that the top of the factory building is a heat-insulating sealClosing the doorThe design ensures that the hot air generated by heat dissipation of the whole asphalt mixing station is collected in the upper space of a factory building, and is sent to the air inlet of the burner after cyclone dust removal through the exhaust pipe arranged at the high point in the factory building, so that the air inlet temperature can be effectively increased, the flame temperature is increased, the fuel is saved, and the combustion is more complete; meanwhile, the air suction power of the air suction pipe is only required to be provided with an air inlet fan of the burner, and no extra energy supply is needed; in addition, the closed design can make the whole factory building more beautiful, and micro negative air pressure is formed in the factory building, so that dust escape is effectively inhibited; asphalt flue gas generated in the production is also sucked into a burner for combustion treatment, so that the environmental pollution is reduced.
Drawings
FIG. 1 is a schematic diagram of an asphalt mixing station waste heat recycling device provided by the utility model;
FIG. 2 is an enlarged view of the cyclone dust collector and the related structure of FIG. 1;
fig. 3 is a top view of the cyclone.
Reference numerals illustrate:
1. a factory building; 2. an asphalt mixing station; 3. a burner; 4. a first exhaust pipe; 5. a second exhaust pipe; 6. a cyclone dust collector; 7. a storage box; 8. a transition pipe; 9. an ash discharging cover plate; 10. a rotating shaft; 11. balancing weight; 31. an air inlet fan; 61. an air inlet pipe; 62. and an air outlet pipe.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present utility model easy to understand, the following further describes how the present utility model is implemented with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 and 2, the utility model provides a waste heat recycling device of an asphalt mixing station, which comprises a factory building 1, an asphalt mixing station 2 arranged in the factory building 1, a combustor 3, a first exhaust pipe 4, a second exhaust pipe 5 and a cyclone dust collector 6, wherein the asphalt mixing station 2 comprises the combustor; the top of the plant 1 is closed, the outer end of the first exhaust pipe 4 is arranged at a position close to the roof in the plant 1, and the inner end of the first exhaust pipe 4 is connected with an air inlet pipe 61 on the side surface of the cyclone dust collector 6; and the air outlet pipe 62 of the cyclone dust collector 6 is connected to the air inlet fan 31 of the burner 3 through the second air exhaust pipe 5.
It will be appreciated that prior art treatment schemes and emissions standards exist for the tail gas produced by the combustion of the burner 3 of the bitumen station. However, the asphalt mixing station 2 itself has a great deal of heat energy loss due to heat dissipation, and the prior art lacks a scheme for recycling such heat.
Compared with the existing open design or the asphalt mixing station with an exhaust window, the asphalt mixing station waste heat recycling device provided by the utility model has the advantages that the top of the factory building 1 is of a heat-preserving closed design, so that hot air generated by heat dissipation of the whole asphalt mixing station 2 is collected in the upper space of the factory building 1, and the hot air is sent to the air inlet of the combustor 3 after cyclone dust removal through the exhaust pipe arranged at the high point in the factory building 1, so that the air inlet temperature can be effectively increased, the flame temperature is increased, the fuel is saved, and the combustion is more sufficient; meanwhile, the air suction power of the air suction pipe is only required to be the air inlet fan 31 of the burner 3, and no additional energy supply is needed; in addition, the closed design can make the whole factory building 1 more beautiful, and micro negative air pressure is formed in the factory building 1, so that dust escape is effectively inhibited; asphalt flue gas overflowed in the production process is also sucked into a burner for combustion treatment, so that environmental pollution is reduced.
According to the statistics of municipal asphalt stations in China, the conventional asphalt mixing station 2 consumes about 30% more fuel in winter than in summer, the low stone temperature is a main factor, and the heat dissipation aggravation and the low combustion air inlet temperature of the asphalt mixing station 2 are also important factors. The waste heat recycling device for the asphalt mixing station can increase the air inlet temperature to about 70 ℃ in summer and about 50 ℃ in winter.
In addition, the wall of the factory building 1 can be subjected to heat preservation treatment so as to further reduce heat dissipation; the top of the plant 1 can be made into an inclined plane so as to be beneficial to converging hot air at the highest point of the plant and draining. It can be understood that, because of the low density of the high-temperature air, the heat is mainly collected at the top of the factory building, the top of the factory building 1 is closed, and the bottom can be normally provided with a plurality of inlets and outlets, windows and air ports; and because the top of the factory building 1 is continuously pumped, negative pressure is formed in the factory building 1, the bottom of the factory building 1 is mainly air inlet, and the heat loss is small. The number of the first exhaust pipes 4 is not limited to one, and the specific number can be selected appropriately according to the size of a factory building and the heat dissipation requirement. The second exhaust pipe 5 and the air inlet fan 31 of the burner 3 can be connected in a detachable mode, so that the burner 3 is convenient to maintain.
Preferably, the cyclone dust collector 6 has a cylindrical upper part and a funnel-shaped lower part; the air inlet pipe 61 of the cyclone 6 is provided at the side top end of the cylindrical portion thereof; the outlet duct 62 of the cyclone 6 is provided at the top center thereof and extends inward a distance. By such a design, the dust removal effect can be improved.
Further, as shown in fig. 2 and 3, the air inlet pipe 61 of the cyclone dust collector 6 can be obliquely arranged, so that hot air obliquely enters the cyclone dust collector 6, rotates and descends under the action of inertia, dust moves outwards under the action of centrifugal force, loses kinetic energy by friction with the outer wall and descends, and the hot air is continuously pumped out from the air outlet pipe 62 in the middle.
Preferably, a containing box 7 is provided below the cyclone 6, and the bottom end of the funnel-shaped portion of the cyclone 6 is opened and faces the containing box 7.
Preferably, a transition pipe 8 is further arranged between the cyclone dust collector 6 and the accommodating box 7, the upper end of the transition pipe 8 is coated on the outer side of the bottom end opening of the cyclone dust collector 6, and the lower end of the transition pipe 8 is communicated with the interior of the accommodating box 7; the bottom end opening of the cyclone dust collector 6 is also provided with an ash discharging cover plate 9, and the ash discharging cover plate 9 can close or open the bottom end opening of the cyclone dust collector 6.
Preferably, the ash discharging cover plate 9 is integrally a bending plate, and the bending part of the ash discharging cover plate is rotatably arranged on the transition pipe 8 through a rotating shaft 10; the ash discharging cover plate 9 is used for closing or opening the bottom end opening of the cyclone dust collector 6 relative to one side of the bending position, and the tail end of the other side of the ash discharging cover plate 9 relative to the bending position is connected with the balancing weight 11. Through the design, the ash discharging cover plate 9 is closed at ordinary times under the action of the balancing weight 11, and low-temperature gas is prevented from ascending; when the accumulated ash weight above one side of the ash discharging cover plate 9 exceeds the reaction force provided by the balancing weight 11 on the other side, the side ash discharging cover plate 9 is automatically opened under the action of gravity, accumulated ash downwards enters the accommodating box 7, and then is automatically closed under the action of the balancing weight 11.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (5)
1. The waste heat recycling device of the asphalt mixing station comprises a factory building (1) and an asphalt mixing station (2) arranged in the factory building (1), wherein the asphalt mixing station (2) comprises a combustor (3), and is characterized by further comprising a first exhaust pipe (4), a second exhaust pipe (5) and a cyclone dust collector (6);
the top of the plant (1) is closed, the outer end of the first exhaust pipe (4) is arranged at a position, close to the roof, in the plant (1), and the inner end of the first exhaust pipe (4) is connected with an air inlet pipe (61) on the side surface of the cyclone dust collector (6);
and an air outlet pipe (62) of the cyclone dust collector (6) is connected to an air inlet fan (31) of the combustor (3) through the second exhaust pipe (5).
2. The waste heat recycling device of the asphalt mixing plant according to claim 1, wherein the cyclone (6) has a cylindrical upper part and a funnel-shaped lower part;
the air inlet pipe (61) of the cyclone dust collector (6) is arranged at the top end of the side surface of the cylindrical part;
the air outlet pipe (62) of the cyclone dust collector (6) is arranged at the center of the top of the cyclone dust collector and extends inwards for a certain distance.
3. The waste heat recycling device of an asphalt mixing plant according to claim 2, wherein a containing box (7) is arranged below the cyclone (6), and the bottom end of the funnel-shaped part of the cyclone (6) is opened and faces the containing box (7).
4. The waste heat recycling device of the asphalt mixing station according to claim 3, wherein a transition pipe (8) is further arranged between the cyclone dust collector (6) and the accommodating box (7), the upper end of the transition pipe (8) is coated on the outer side of the bottom end opening of the cyclone dust collector (6), and the lower end of the transition pipe (8) is communicated with the interior of the accommodating box (7);
the bottom end opening of the cyclone dust collector (6) is also provided with an ash discharging cover plate (9), and the ash discharging cover plate (9) can close or open the bottom end opening of the cyclone dust collector (6).
5. The waste heat recycling device of the asphalt mixing station according to claim 4, wherein the ash discharging cover plate (9) is integrally a bending plate, and the bending part of the ash discharging cover plate is rotatably arranged on the transition pipe (8) through a rotating shaft (10);
the dust discharging cover plate (9) is used for closing or opening the bottom end opening of the cyclone dust collector (6) relative to one side of the bending position, and the tail end of the dust discharging cover plate (9) relative to the other side of the bending position is connected with the balancing weight (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320987664.6U CN219433275U (en) | 2023-04-27 | 2023-04-27 | Waste heat recycling device of asphalt mixing station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320987664.6U CN219433275U (en) | 2023-04-27 | 2023-04-27 | Waste heat recycling device of asphalt mixing station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219433275U true CN219433275U (en) | 2023-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320987664.6U Active CN219433275U (en) | 2023-04-27 | 2023-04-27 | Waste heat recycling device of asphalt mixing station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219433275U (en) |
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2023
- 2023-04-27 CN CN202320987664.6U patent/CN219433275U/en active Active
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