Dust removal device of small-raw large-recycled asphalt mixture stirring equipment

Abstract

The utility model provides a dust removal device of small-raw large-recycled asphalt mixture stirring equipment. The dust removal device comprises a raw drying roller, a raw driving mechanism for driving the raw drying roller to rotate, a recycled drying roller, a recycled driving mechanism for driving the recycled drying roller to rotate, a raw dust removal mechanism and a recycled dust removal mechanism, the primary drying roller rotates to enable primary aggregate in the primary drying roller to roll over to form primary dust, the regeneration drying roller rotates to enable regenerated aggregate in the regeneration drying roller to roll over to form regenerated dust, the primary dust is converted into primary environment-friendly flue gas through the primary dust removal mechanism, and the regenerated dust is converted into regenerated environment-friendly flue gas through the regeneration dust removal mechanism. A dust removal system for the recycled aggregate and a dust removal system for the primary aggregate are separated, so that the influence of a large amount of recycled dust on the heating effect of the primary aggregate is avoided, and the influence of asphalt flue gas in the recycled dust on the service life of a bag-type dust collector for treating the primary dust is also avoided.

Description

Technical Field

[0001] The present application relates to the technical field of asphalt, and particularly to a dust removal device for a small primary and large recycled asphalt mixture mixing equipment. Background Art

[0002] With the rapid development of transportation infrastructure construction, the demand for asphalt mixtures has been increasing year by year. However, traditional asphalt mixture mixing equipment mainly relies on primary materials, with a relatively low addition ratio of waste asphalt materials, resulting in low utilization rate, which not only causes waste of resources, but also increases production costs and environmental pollution.

[0003] In order to avoid waste of resources, the addition ratio of recycled materials will be increased. However, with the increase of the addition ratio, a large amount of recycled flue gas generated is difficult to be effectively treated. Currently, there are two treatment methods: one is to transport the recycled flue gas into the primary drying drum for secondary combustion, but the recycled flue gas is too large, affecting the combustion of primary aggregates; the other is to send the recycled flue gas into the main bag filter, but the recycled flue gas contains asphalt flue gas, which is highly viscous and will adhere to the filter bags and cannot fall off, thus affecting the service life of the bag filter. Summary of the Invention

[0004] In view of the above defects or deficiencies in the prior art, the present application aims to provide a dust removal device for a small primary and large recycled asphalt mixture mixing equipment, including:

[0005] A primary drying drum, in which there is a first space for placing primary aggregates;

[0006] A primary driving mechanism for driving the primary drying drum to rotate and form primary dust in the first space;

[0007] A recycled drying drum, in which there is a second space for placing recycled aggregates;

[0008] A recycled driving mechanism for driving the recycled drying drum to rotate and form recycled dust in the second space;

[0009] A primary dust removal mechanism provided on one side of the primary drying drum and communicating with the first space, for converting the primary dust into primary environmentally friendly flue gas;

[0010] A recycled dust removal mechanism provided on one side of the recycled drying drum and communicating with the second space, for converting the recycled dust into recycled environmentally friendly flue gas.

[0011] According to the technical solution provided by the embodiment of the present application, the raw dust removal mechanism includes:

[0012] A raw flue, which is connected to the first space and is used to accommodate the raw dust;

[0013] A primary raw dust removal component, which is connected to the raw flue and is used to collect large-particle raw dust from the raw dust conveyed by the raw flue and form primary raw dust;

[0014] A secondary raw dust removal component, which is connected to the primary raw dust removal component and is used to collect small-particle raw dust from the primary raw dust and form the raw environmental protection flue gas;

[0015] A raw air induction component, which is used to pump the raw dust, the primary raw dust, and the raw environmental protection flue gas.

[0016] According to the technical solution provided by the embodiment of the present application, the regeneration dust removal mechanism includes:

[0017] A regeneration flue, which is connected to the second space and is used to accommodate the regeneration dust;

[0018] A primary regeneration dust removal component, which is connected to the regeneration flue and is used to collect large-particle regeneration dust from the regeneration dust conveyed by the regeneration flue and form primary regeneration dust;

[0019] A secondary regeneration dust removal component, which is connected to the primary regeneration dust removal component and is used to collect small-particle regeneration dust from the primary regeneration dust and form secondary regeneration dust;

[0020] A catalytic combustion component, which is arranged at the end of the secondary regeneration dust removal component far from the primary regeneration dust removal component and is used to burn the secondary regeneration dust to form the regeneration environmental protection flue gas;

[0021] A regeneration air induction component, which is arranged at the end of the catalytic combustion component far from the secondary regeneration dust removal component, and the regeneration air induction component is used to pump the regeneration dust, the primary regeneration dust, the secondary regeneration dust, and the regeneration environmental protection flue gas.

[0022] According to the technical solution provided by the embodiment of the present application, the regeneration dust removal mechanism further includes an adsorption component, which is arranged between the secondary regeneration dust removal component and the catalytic combustion component and is used to adsorb large particles in the secondary regeneration dust.

[0023] According to the technical solution provided by the embodiment of the present application, a hot aggregate elevator is provided on the side of the raw drying drum away from the raw dust removal mechanism. The hot aggregate elevator has a first inlet end and a first outlet end, and the first outlet end is communicated with a mixing pot for forming asphalt mixture. The large particle raw dust is conveyed to the first inlet end and then conveyed into the mixing pot through the hot aggregate elevator.

[0024] According to the technical solution provided by the embodiment of the present application, a powder elevator is provided on one side of the hot aggregate elevator. The powder elevator has a second inlet end and a second outlet end, and the second outlet end is communicated with a powder weighing assembly. The side of the powder weighing assembly away from the second outlet end is communicated with the mixing pot. The small particle raw dust is conveyed to the second inlet end and then conveyed to the powder weighing assembly through the powder elevator. After being metered by the powder weighing assembly, it is conveyed into the mixing pot.

[0025] According to the technical solution provided by the embodiment of the present application, a powder weighing assembly is further included. The powder weighing assembly is arranged on the side of the powder elevator close to the second outlet end and is used for metering the large particle recycled dust, the small particle recycled dust, and the small particle raw dust.

[0026] According to the technical solution provided by the embodiment of the present application, a buffer bin is further provided between the second outlet end and the powder weighing assembly. The large particle recycled dust, the small particle recycled dust, and the small particle raw dust conveyed by the powder elevator first enter the buffer bin and then enter the powder weighing assembly.

[0027] According to the technical solution provided by the embodiment of the present application, the buffer bin is communicated with a recycled powder tank. The end of the recycled powder tank away from the buffer bin is communicated with a recycled powder screw conveyor assembly. The end of the recycled powder screw conveyor assembly away from the recycled powder tank is communicated with the second inlet end. When the storage amount in the buffer bin reaches a preset saturation threshold, the large particle recycled dust, the small particle recycled dust, and the small particle raw dust in the buffer bin enter the recycled powder tank, and the recycled powder screw conveyor assembly conveys them back to the second inlet end.

[0028] According to the technical solution provided by the embodiment of the present application, the recycled air induction assembly is further used to pump the large particle recycled dust, the small particle recycled dust, and the small particle raw dust in the recycled powder tank into the recycled flue.

[0029] In summary, the present application provides a dust removal device for a small primary and large secondary asphalt mixture mixing equipment, including a primary drying drum, a primary driving mechanism for driving the primary drying drum to rotate, a secondary drying drum, a secondary driving mechanism for driving the secondary drying drum to rotate, a primary dust removal mechanism, and a secondary dust removal mechanism; by rotating the primary drying drum, the primary aggregate inside it tumbles to form primary dust, and by rotating the secondary drying drum, the secondary aggregate inside it tumbles to form secondary dust. Then, the primary dust is converted into primary environmentally friendly flue gas through the primary dust removal mechanism, and the secondary dust is converted into secondary environmentally friendly flue gas through the secondary dust removal mechanism. By separating the dust removal systems of the secondary aggregate and the primary aggregate, the influence of a large amount of secondary dust on the heating effect of the primary aggregate is avoided, and the influence on the service life of the bag filter for treating the primary dust caused by the asphalt fumes in the secondary dust is also avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 FIG. is a schematic structural diagram of the dust removal device for the small primary and large secondary asphalt mixture mixing equipment provided by the embodiment of the present application.

[0031] The text markings in the figure are indicated as follows:

[0032] 1. Primary drying drum; 2. Secondary drying drum; 3. Primary dust removal mechanism; 31. Primary first-stage dust removal component; 32. Primary second-stage dust removal component; 33. Primary chimney; 34. Primary air induction component; 35. Primary flue; 4. Secondary dust removal mechanism; 41. Secondary flue; 42. Secondary first-stage dust removal component; 43. Secondary second-stage dust removal component; 44. Adsorption component; 45. Catalytic combustion component; 46. Secondary chimney; 47. Secondary air induction component; 5. Hot aggregate elevator; 6. Powder elevator; 7. Vibration component; 8. Aggregate scale; 9. Mixing pot; 10. Recycled powder tank; 11. New powder tank; 12. Buffer bin; 13. Asphalt mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The present application will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. In addition, it should be noted that, for the sake of description, only the parts related to the invention are shown in the drawings.

[0034] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and embodiments.

[0035] As mentioned in the background art, the present application provides a dust removal device for a small primary and large secondary asphalt mixture mixing equipment, including:

[0036] The raw drying drum 11 has a first space inside, and the first space is used to place raw aggregates;

[0037] Among them, as Figure 1 shown, a raw aggregate conveying belt is provided on the left side of the raw drying drum 11, and a raw aggregate inlet communicating with the first space is provided at its left end. The raw aggregates are conveyed into the first space through the raw aggregate conveying belt;

[0038] A raw driving mechanism is used to drive the raw drying drum 1 to rotate, and raw dust is formed in the first space;

[0039] Optionally, the raw driving mechanism can drive the transmission roller to rotate through a motor, and drive the raw drying drum 1 to rotate through the transmission roller, or it can be other power mechanisms that can drive the raw drying drum 1 to rotate. This is prior art and will not be elaborated here. When the raw drying drum 1 rotates, it can drive the raw aggregates in the first space to tumble, thereby generating the raw dust. The raw dust includes large-grained gravel and fine powder similar to cement powder. Preferably, a plurality of lifters are further provided inside the raw drying drum 1. When the raw drying drum 1 rotates at a low speed, the lifters can lift the raw aggregates to form a curtain of materials, improving the efficiency of separating the raw dust and stones.

[0040] Furthermore, the raw drying drum 1 is inclined, as Figure 1 shown, with the left side higher and the right side lower. A heating component is further provided at its right end. The heating component can heat the air in the first space 11 through a flame, and then heat the raw aggregates through the hot air, or heat the raw aggregates by means of thermal radiation; the heated raw aggregates are dried raw aggregates, and the dried raw aggregates are discharged through the raw aggregate outlet on the right side of the raw drying drum 1.

[0041] The recycled drying drum 2 has a second space inside, and the second space is used to place recycled aggregates;

[0042] Among them, as Figure 1 shown, a recycled aggregate conveying belt is provided on the left side of the recycled drying drum 2, and a recycled aggregate inlet communicating with the second space is provided at its left end. The recycled aggregates are conveyed into the second space through the recycled aggregate conveying belt; the recycled aggregates include coarse powder and fine powder. The coarse powder is mostly stones, large-grained gravel, etc., and the fine powder is mostly dust and asphalt, etc.

[0043] A recycled driving mechanism is used to drive the recycled drying drum 2 to rotate, and recycled dust is formed in the second space;

[0044] Among them, the structures of the regeneration driving mechanism and the primary driving mechanism can be the same. However, since this application has a small primary and a large regeneration, the proportion of the recycled aggregate is relatively large. Therefore, the power of the regeneration driving mechanism is greater than that of the primary driving mechanism. Similarly, there are also baffles in the regeneration drying drum 2, and there is also a heating component on its right side. The heated recycled aggregate is the dried recycled aggregate, and the dried recycled aggregate is discharged through the recycled aggregate outlet communicating with the second space.

[0045] The primary dust removal mechanism 3 is arranged on one side of the primary drying drum and communicates with the first space. The primary dust removal mechanism 3 is used to convert the primary dust into primary environmentally friendly flue gas;

[0046] Among them, the primary dust removal mechanism 3 is arranged on the left side of the primary drying drum 1. The primary dust removal mechanism 3 only processes the primary dust. Since this application has a small primary and a large regeneration, compared with a large primary and a small regeneration, the processing capacity of the primary dust removal mechanism 3 is reduced, so the cost will also be reduced accordingly;

[0047] The regeneration dust removal mechanism 4 is arranged on one side of the regeneration drying drum and communicates with the second space. The regeneration dust removal mechanism 4 is used to convert the regeneration dust into regeneration environmentally friendly flue gas.

[0048] Among them, the regeneration dust removal mechanism 4 is arranged on the right side of the regeneration drying drum 2. The regeneration dust removal mechanism 4 only processes the regeneration dust. In this application, by adding a set of dust removal mechanisms, the treatment of the regeneration dust and the treatment of the primary dust are separated, avoiding the influence of the regeneration dust on the treatment of the primary dust. Moreover, although a set of dust removal mechanisms is added, the service life of the primary mechanism is extended and the cost of the primary mechanism is reduced. Therefore, after balancing, the total cost will not fluctuate greatly.

[0049] In a preferred embodiment, the primary dust removal mechanism 3 includes:

[0050] The primary flue 35 communicates with the first space and is used to accommodate the primary dust;

[0051] The primary dust removal component 31 of the first stage communicates with the primary flue 35 and is used to collect large-particle primary dust from the primary dust transported by the primary flue 35 and form primary dust of the first stage;

[0052] Optionally, the primary dust removal component 31 of the first stage is a gravity dust removal device, and the large-particle primary dust is large-particle gravel;

[0053] The secondary primary dust removal component 32, which is connected to the primary primary dust removal component 31, is used to collect small particle primary dust from the primary primary dust and form the primary environmental protection flue gas;

[0054] Optionally, the secondary primary dust removal component 32 is a bag filter, and the small particle primary dust is small particle dust similar to flour; A primary chimney 33 is also connected to the end of the secondary primary dust removal component 32 far from the primary primary dust removal component 31;

[0055] The primary induced draft component 34 is used to pump the primary dust, the primary primary dust, and the primary environmental protection flue gas;

[0056] Among them, the primary induced draft component 34 is arranged on the side of the primary chimney 33 far from the secondary primary dust removal component 32. Optionally, the primary induced draft component 34 is an induced draft fan, and a negative pressure is generated by the induced draft fan to pump the primary dust into the primary primary dust removal component 31, pump the primary primary dust into the secondary primary dust removal component 32, and pump the primary environmental protection flue gas to the primary chimney 33, so as to be discharged into the atmosphere. Among them, the gravity dust removal device, the bag filter, and the induced draft fan are all prior arts and will not be elaborated here.

[0057] In a preferred embodiment, the regeneration dust removal mechanism 4 includes:

[0058] The regeneration flue 41, which is connected to the second space and is used to accommodate the regeneration dust;

[0059] Among them, compared with the primary dust, the regeneration dust has more asphalt particles and asphalt fumes;

[0060] The primary regeneration dust removal component 42, which is connected to the regeneration flue 41 and is used to collect large particle regeneration dust from the regeneration dust conveyed by the regeneration flue 41 and form primary regeneration dust;

[0061] The secondary regeneration dust removal component 43, which is connected to the primary regeneration dust removal component 42 and is used to collect small particle regeneration dust from the primary regeneration dust and form secondary regeneration dust;

[0062] Among them, the primary regeneration dust removal component 42 and the primary primary dust removal component 31 have the same structure, and the secondary regeneration dust removal component 43 and the secondary primary dust removal component 32 have the same structure;

[0063] The catalytic combustion assembly 45 is provided at the end of the secondary regeneration dust removal assembly 43 away from the primary regeneration dust removal assembly 42 for burning the secondary regeneration dust to form the regenerated environmental protection flue gas.

[0064] Since the regenerated flue gas contains asphalt fumes which contain harmful chemical substances and cannot be discharged into the atmosphere, the catalytic combustion assembly 45 causes a chemical reaction to form the harmless regenerated environmental protection flue gas. A regeneration chimney 46 is provided at the end of the catalytic combustion assembly 45 away from the secondary dust removal assembly.

[0065] The regeneration air extraction assembly 47 is provided at the end of the catalytic combustion assembly 45 away from the secondary regeneration dust removal assembly 43, and the regeneration air extraction assembly 47 is used to extract and convey the regenerated dust, the primary regenerated dust, the secondary regenerated dust, and the regenerated environmental protection flue gas.

[0066] The regeneration air extraction assembly 47 and the primary air extraction assembly 34 have the same structure. The regeneration air extraction assembly 47 is provided on the side of the regeneration chimney 46 away from the secondary regeneration dust removal side. The regeneration air extraction assembly 47 conveys the regenerated dust into the primary regeneration dust removal assembly 42, conveys the primary regenerated dust into the secondary regeneration dust removal assembly 43, conveys the secondary regenerated dust into the catalytic combustion assembly 45, and conveys the environmental protection flue gas into the regeneration chimney 46, so as to be discharged into the atmosphere.

[0067] In a preferred embodiment, the regeneration dust removal mechanism 4 further includes an adsorption assembly 44 which is provided between the secondary regeneration dust removal assembly 43 and the catalytic combustion assembly 45 for adsorbing large particles in the secondary regeneration dust.

[0068] Among them, the life of the catalytic combustion assembly 45 will be reduced after being polluted by dust, and the dust removal rates of the primary regeneration dust removal assembly 42 and the secondary regeneration dust removal assembly 43 cannot reach 100%. Therefore, in order to avoid the pollution of the catalytic combustion assembly 45 by dust, the adsorption assembly 44 is added between the catalytic combustion assembly 45 and the secondary regeneration dust removal assembly 43 for adsorbing the dust in the secondary regeneration dust. After passing through the adsorption assembly 44, the secondary regeneration dust becomes asphalt fumes that only contain harmful flue gas. Optionally, the adsorption assembly 44 is activated carbon.

[0069] In a preferred embodiment, a hot aggregate elevator 5 is provided on the side of the primary drying drum 1 away from the primary dust removal mechanism 3, and the hot aggregate elevator 5 has a first inlet end and a first outlet end, and the first outlet end is connected to a stirring pot 9, and the stirring pot 9 is used to form an asphalt mixture; the large-particle primary dust is transported to the first inlet end and transported to the stirring pot 9 through the hot aggregate elevator 5.

[0070] The regenerated aggregate outlet on the right side of the regenerated drying drum 2 is connected to the stirring pot 9, and the regenerated aggregate is heated to form the dry regenerated aggregate, which is transported to the stirring pot 9 from the regenerated aggregate outlet; further, the large-particle primary dust can be collected by a coarse powder recovery spiral device and transported to the first inlet end; the dry primary aggregate is also transported to the first inlet end, and is transported to the first outlet end together with the large-particle primary dust through the hot aggregate elevator 5; the first outlet end is connected to a vibration component 7, and the vibration component 7 is connected to an aggregate scale 8 away from the first outlet end, and the aggregate scale 8 is connected to the stirring pot 9 away from the vibration component 7. The vibration component 7 includes a vibration space, and a vibration screen is provided in the vibration space. The vibration screen is used to screen the dry primary aggregate and the large-particle primary dust to screen out different specifications of ready-to-use aggregates. The vibration screen includes a plurality of vibration channels, each of which is used to transport the ready-to-use aggregates of different specifications to the aggregate scale 8, and then transport them to the stirring pot 9 after being measured by the aggregate scale 8. By passing the large-particle primary dust through the hot aggregate elevator 5 and the vibrating screen to form the stand-by aggregate, the utilization rate of the primary aggregate is improved and the waste of resources is avoided.

[0071] In addition, a dust suction fan is also provided on one side of the aggregate elevator, one end of the dust suction fan is connected to the vibration space, and the other end is connected to the primary flue 35. The dry primary aggregate and the large-particle primary dust will generate dust again during the vibration screening process, and the dust is transported back to the primary flue 35 by the dust suction fan, thereby avoiding the influence of excessive dust on the vibrating screen.

[0072] In a preferred embodiment, a powder elevator 6 is provided on one side of the hot aggregate elevator 5, and the powder elevator 6 has a second inlet end and a second outlet end, the second outlet end is connected to a powder scale component, and the powder scale component is connected to the stirring pot 9 away from the second outlet end; the small-particle primary dust is transported to the second inlet end, and is transported to the powder scale component through the powder elevator 6, and is transported to the stirring pot 9 after being measured by the powder scale component.

[0073] Optionally, the small-particle raw dust is conveyed to the second inlet end through a fine powder screw recovery device, and after being metered by the powder weighing assembly, it is conveyed to the mixing pot 9, which improves the utilization rate of the small-particle raw dust, that is, improves the utilization rate of the raw aggregate and avoids waste of resources.

[0074] In a preferred embodiment, it further includes a powder weighing assembly, and the powder weighing assembly is arranged on the side of the powder elevator 6 close to the second outlet end. The powder weighing assembly is used to weigh the large-particle recycled dust, the small-particle recycled dust, and the small-particle raw dust.

[0075] Among them, the large-particle recycled dust is also conveyed to the powder elevator 6 through a coarse powder recovery screw device, and the small-particle recycled dust is also conveyed to the powder elevator 6 through the fine powder recovery screw device. After weighing the large-particle recycled dust, the small-particle recycled dust, and the small-particle raw dust, they are sent into the mixing pot 9; by reusing the small-particle recycled dust and the large-particle recycled dust, the utilization rate of the recycled aggregate is improved.

[0076] In a preferred embodiment, a buffer bin 12 is further arranged between the second outlet end and the powder weighing assembly. The large-particle recycled dust, small-particle recycled dust, and small-particle raw dust conveyed by the powder elevator 6 first enter the buffer bin 12 and then enter the powder weighing assembly.

[0077] Among them, a switching valve is arranged at the end of the buffer bin 12 close to the powder weighing assembly. By opening and then closing the switching valve, the dust is quantitatively conveyed into the powder weighing assembly. Therefore, it is necessary for the buffer bin 12 to store the dust from the powder elevator 6 to avoid dust congestion at the powder weighing place.

[0078] In a preferred embodiment, the buffer bin 12 is communicated with a recovered powder tank 10. The end of the recovered powder tank 10 away from the buffer bin 12 is communicated with a recovered powder screw conveying assembly. The end of the recovered powder screw conveying assembly away from the recovered powder tank 10 is communicated with the second inlet end. When the storage amount in the buffer bin 12 reaches a preset saturation threshold, the large-particle recycled dust, small-particle recycled dust, and small-particle raw dust in the buffer bin 12 enter the recovered powder tank 10, and the recovered powder screw conveying assembly conveys them back to the second inlet end.

[0079] Among them, the preset saturation threshold is the amount of dust that can be stored when the buffer bin 12 is almost full, that is, when the buffer bin 12 is about to be full, the recycling of dust is realized through the recovered powder tank 10 and the recovered powder screw conveying assembly, avoiding the situation where dust cannot be sent out by the powder elevator 6 when the buffer bin 12 is full.

[0080] In addition, a new powder tank 11 is provided on one side of the recycled powder tank 10. The new powder tank 11 is used to store new powder, which is formed by grinding clean pure stones. When the dust in the buffer bin 12 does not meet the demand, the new powder in the new powder tank 11 can be transported to the powder weighing assembly, and after metering, it is transported to the mixing pan 9 for production use.

[0081] In a preferred embodiment, the regenerative induced draft assembly 47 is further configured to suck the large particle regenerated dust, small particle regenerated dust, and small particle virgin dust in the recycled powder tank 10 into the regenerative flue 41.

[0082] Wherein, a recovery channel is further provided between the recycled powder tank 10 and the regenerative flue 41. One end of the recovery channel is communicated with the regenerative flue 41, and the other end is communicated with the recycled powder tank 10. Through the regenerative induced draft assembly 47, the dust in the recycled powder tank 10 can be transported into the regenerative flue 41. Since the regenerated dust contains not only large particle grit and small particle dust but also asphalt fumes, and because the heating assembly heats the second space, the asphalt fumes have a certain viscosity. The recycled powder tank 10 contains small particle virgin dust, large particle regenerated dust, and small particle regenerated dust. These dusts can capture the asphalt fumes and form particles. The particles pass through the primary regenerative dust removal mechanism 4, the secondary regenerative dust removal mechanism 4 for regeneration, and the large particle regenerated dust or small particle regenerated dust, and are collected into the powder elevator 6 by the coarse material recovery screw device and the fine material recovery screw device for reuse.

[0083] Furthermore, an asphalt mechanism 13 is provided on one side of the mixing pan 9 for transporting asphalt into the mixing pan 9. The asphalt is mixed and stirred with the dry virgin aggregate, the regenerated dry aggregate, the large particle virgin dust, the small particle virgin dust, the large particle regenerated dust, and the small particle regenerated dust in the mixing pan 9 to form the asphalt mixture.

[0084] In this application, by separating the dust removal systems of the regenerated aggregate and the virgin aggregate, the influence of a large amount of regenerated dust on the heating effect of the virgin aggregate is avoided, and the influence on the service life of the bag filter for treating the virgin dust caused by the asphalt fumes in the regenerated dust is also avoided. In addition, this application reuses the large particle virgin dust, the small particle virgin dust, the large particle regenerated dust, and the small particle regenerated dust collected by the dust removal device, improves the utilization rate of the virgin aggregate and the regenerated aggregate, and avoids waste of resources.

[0085] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solution formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the present application that have similar functions.

Claims

1. A dust removal device for a small original large recycled asphalt mixture mixing equipment, characterized in that, Comprising: A raw drying drum (1) having a first space therein for placing raw aggregates; A raw driving mechanism for driving the raw drying drum (1) to rotate to form raw dust in the first space; A recycled drying drum (2) having a second space therein for placing recycled aggregates; A recycled driving mechanism for driving the recycled drying drum (2) to rotate to form recycled dust in the second space; A raw dust removal mechanism (3) provided on one side of the raw drying drum (1) and communicating with the first space, the raw dust removal mechanism (3) being used for converting the raw dust into raw environmentally friendly flue gas; A recycled dust removal mechanism (4) provided on one side of the recycled drying drum (2) and communicating with the second space, the recycled dust removal mechanism (4) being used for converting the recycled dust into recycled environmentally friendly flue gas.

2. The dust removal device of the small primary and large secondary asphalt mixture mixing equipment according to claim 1, characterized in that, The raw dust removal mechanism (3) includes: A raw flue (35) communicating with the first space for accommodating the raw dust; A primary raw dust removal assembly (31) communicating with the raw flue (35) for collecting large particle raw dust from the raw dust conveyed by the raw flue (35) and forming primary raw dust; A secondary raw dust removal assembly (32) communicating with the primary raw dust removal assembly (31) for collecting small particle raw dust from the primary raw dust and forming the raw environmentally friendly flue gas; A raw air inducing assembly (34) for pumping the raw dust, the primary raw dust, and the raw environmentally friendly flue gas.

3. The dust removal device of the small primary and large recycled asphalt mixture mixing equipment according to claim 2, characterized in that, The recycled dust removal mechanism (4) includes: A recycled flue (41) communicating with the second space for accommodating the recycled dust; A primary recycled dust removal assembly (42) communicating with the recycled flue (41) for collecting large particle recycled dust from the recycled dust conveyed by the recycled flue (41) and forming primary recycled dust; A secondary recycled dust removal assembly (43) communicating with the primary recycled dust removal assembly (42) for collecting small particle recycled dust from the primary recycled dust and forming secondary recycled dust; A catalytic combustion assembly (45) provided at the end of the secondary recycled dust removal assembly (43) away from the primary recycled dust removal assembly (42) for burning the secondary recycled dust to form the recycled environmentally friendly flue gas; A regeneration induced draft component (47), the regeneration induced draft component (47) is arranged at the end of the catalytic combustion component (45) away from the secondary regeneration dust removal component (43), and the regeneration induced draft component (47) is used for pumping the regenerated dust, the primary regenerated dust, the secondary regenerated dust, and the regenerated environmental protection flue gas.

4. The dust removal device of the small primary and large secondary asphalt mixture mixing equipment according to claim 3, characterized in that, The regeneration dust removal mechanism (4) further includes an adsorption component (44), the adsorption component (44) is arranged between the secondary regeneration dust removal component (43) and the catalytic combustion component (45), and is used for adsorbing large particles in the secondary regenerated dust.

5. The dust removal device of the small primary and large secondary asphalt mixture mixing equipment according to claim 3, characterized in that, A hot aggregate elevator (5) is arranged on the side of the primary drying drum (1) away from the primary dust removal mechanism (3). The hot aggregate elevator (5) has a first inlet end and a first outlet end, and the first outlet end is communicated with a mixing pot (9), and the mixing pot (9) is used for forming asphalt mixture.

6. The dust removal device of the small primary and large recycling asphalt mixture mixing equipment according to claim 5, characterized in that, A powder elevator (6) is arranged on one side of the hot aggregate elevator (5). The powder elevator (6) has a second inlet end and a second outlet end, and the second outlet end is communicated with a powder weighing component. The side of the powder weighing component away from the second outlet end is communicated with the mixing pot (9).

7. The dust removal device of the small original and large recycled asphalt mixture mixing equipment according to claim 6, characterized in that, It further includes a powder weighing component. The dust component is arranged on the side of the powder elevator (6) close to the second outlet end, and the powder weighing component is used for measuring the large particle regenerated dust, the small particle regenerated dust, and the small particle primary dust.

8. The dust removal device of the small primary and large secondary asphalt mixture mixing equipment according to claim 7, characterized in that, A buffer bin (12) is further arranged between the second outlet end and the powder weighing component.

9. The dust removal device of the small primary and large secondary asphalt mixture mixing equipment according to claim 8, characterized in that, The buffer bin (12) is communicated with a recovered powder tank (10). The end of the recovered powder tank (10) away from the buffer bin (12) is communicated with a recovered powder screw conveyor assembly, and the end of the recovered powder screw conveyor assembly away from the recovered powder tank (10) is communicated with the second inlet end.

10. The dust removal device of the small original large recycled asphalt mixture mixing equipment according to claim 9, characterized in that, The regeneration induced draft component (47) is further used for pumping the large particle regenerated dust, small particle regenerated dust, and small particle primary dust in the recovered powder tank (10) to the regeneration flue (41).

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