Flue gas treatment device for asphalt concrete mixer

Abstract

The invention discloses a flue gas treatment device for an asphalt concrete mixer, and belongs to the technical field of asphalt concrete processing, the flue gas treatment device specifically comprises a gas-collecting hood and a bag-type dust collector, the gas-collecting hood is fixedly connected to a flue gas outlet of the mixer, and the gas outlet end of the gas-collecting hood is connected with the gas inlet end of the bag-type dust collector through a spray washer; the bag-type dust collector comprises a shell, a middle filtering cavity is formed in the shell, a sealing plate is fixedly connected to the interior of the middle filtering cavity, a filtering column is fixedly connected to the lower portion of the sealing plate, and filtering cavities are circumferentially distributed on the filtering column; a gas filtering mechanism is arranged in the filtering chamber; by arranging the spray washer and the bag-type dust collector, high-temperature flue gas can be cooled, the bag-type dust collector can filter dust, dust on a dust collection bag can be cleaned without shutdown, the flue gas treatment effect is improved, and the flue gas treatment effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of asphalt concrete processing, and particularly relates to a flue gas treatment device for an asphalt concrete mixer. Background Art

[0002] A flue gas treatment device for an asphalt concrete mixer is a device specifically designed to treat the flue gas generated during the production of asphalt concrete. Its main purpose is to remove harmful particulate matter, gaseous pollutants, and odors in the flue gas to protect the environment and human health.

[0003] The prior art discloses a Chinese utility model patent with the application number CN220758544U. This patent discloses a flue gas treatment device for an asphalt concrete mixer, including a mixer. One side of the top of the mixer is communicated with a smoke inlet pipe. A fan is fixedly installed at the top of the smoke inlet pipe. A first net plate is fixedly installed at the air inlet of the fan. The air outlet of the fan penetrates through the top of the smoke inlet pipe and is fixedly installed with a second net plate. One side wall of the smoke inlet pipe is rotationally connected with a cleaning cover through a bearing. One end of the cleaning cover is connected to the side wall of the smoke inlet pipe by screws. The bottom of the smoke inlet pipe is communicated with a water tank. The water tank is fixedly installed on the side wall of the mixer. A drain port is opened at the bottom of the water tank. Beneficial effects: The invention adopts a water pump and atomizing nozzles. While cooling the flue gas through the arranged water pump and atomizing nozzles, impurities and harmful substances in the flue gas can also be adsorbed, and then further filtered through a fiberglass filter layer, a desiccant layer, and an activated carbon adsorption layer. The structure is simple, and the flue gas cooling and filtering efficiency is high.

[0004] The above prior art still has deficiencies: When treating the dust in the flue gas, sticky dust is easily attached to the surface of the fiberglass, causing blockage and requiring shutdown for manual cleaning, which reduces the treatment effect of the flue gas. Therefore, it is necessary to provide a flue gas treatment device for an asphalt concrete mixer to solve the above technical problems. Summary of the Invention

[0005] To solve the problems raised in the above background art, the present invention provides a flue gas treatment device for an asphalt concrete mixer, which has the characteristics that after cooling the flue gas, the bag filter can filter the dust, and the dust on the dust removal bag can be cleaned without shutdown, improving the treatment effect of the flue gas.

[0006] To achieve the above object, the present invention provides the following technical solution: A flue gas treatment device for an asphalt concrete mixer, including a gas collecting hood and a bag filter. The gas collecting hood is fixedly connected to the smoke outlet of the mixer. The gas outlet end of the gas collecting hood is connected to the gas inlet end of the bag filter through a spray scrubber; It is characterized in that: the bag filter includes a housing, a middle filtration chamber is arranged inside the housing, a sealing plate is fixedly connected inside the middle filtration chamber, a filtration column is fixedly connected below the sealing plate, filtration chambers are circumferentially distributed on the filtration column, the top of the filtration chamber is communicated with the air distribution holes arranged on the sealing plate, and a dust collection hopper is fixedly connected to the bottom of the filtration chamber; A gas filtration mechanism is arranged inside the filtration chamber. The gas filtration mechanism includes a pull-out frame, an installation groove, a dust removal bag and a skeleton. The pull-out frame is movably connected inside the pull-out groove arranged on the sealing plate. Installation grooves are circumferentially distributed on the pull-out frame. A dust removal bag is movably connected to the installation groove, and a skeleton is arranged inside the dust removal bag.

[0007] Preferably, a lower dust collection chamber is arranged below the middle filtration chamber inside the housing. An air inlet pipe is fixedly connected to one side of the lower dust collection chamber. The air inlet end of the air inlet pipe is connected to a gas collection hood. A dust discharge hopper is fixedly connected to the bottom of the lower dust collection chamber.

[0008] Preferably, a gas supply mechanism is arranged inside the lower dust collection chamber. The gas supply mechanism includes a gas collection pipe and a gas distribution pipe. The gas collection pipe is connected to the air inlet pipe through a rotating joint. A plurality of gas distribution pipes are fixedly connected to the gas collection pipe. The plurality of gas distribution pipes are fixedly connected through a rotating frame. The air outlet end of the gas distribution pipe is fixedly connected to a communication hopper adapted to the dust collection hopper.

[0009] Preferably, an upper gas collection chamber is arranged above the middle filtration chamber inside the housing. An exhaust pipe is fixedly connected to the upper gas collection chamber.

[0010] Preferably, a closing mechanism is arranged inside the upper gas collection chamber. The closing mechanism includes a rotating plate and a closing plate. The rotating plate is rotatably connected to the sealing plate and is arranged in a fitting manner with the sealing plate. A closing plate adapted to the air distribution holes is fixedly connected to the rotating plate.

[0011] Preferably, a driving mechanism is further arranged above the housing. The driving mechanism includes a driving shaft and a reduction motor. The driving shaft is rotatably connected to the sealing plate and is in transmission connection with the reduction motor arranged on the housing. The other end of the driving shaft passes through the filtration column and extends into the lower dust collection chamber. An upper connecting sleeve and a lower connecting sleeve are fixedly sleeved on the driving shaft. The upper connecting sleeve is fixedly connected to the rotating plate, and the lower connecting sleeve is fixedly connected to the rotating frame.

[0012] Preferably, a disassembly groove corresponding to the filtration chamber is arranged on the side wall of the housing. A closing door is arranged inside the disassembly groove. The closing door is fixedly connected to the housing through a locking mechanism.

[0013] Preferably, the locking mechanism includes a pressing rod, the inner wall of the pressing rod is attached to the outer wall of the closing door, one end of the pressing rod is rotatably connected to a fixed seat, the fixed seat is fixedly connected to the housing, and the other end of the pressing rod is detachably connected to a dismounting seat, and the dismounting seat is fixedly connected to the housing.

[0014] Preferably, it further includes a pulse jet dust cleaning device for cleaning the dust removal bag, and the pulse jet dust cleaning device is arranged on the rotating plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting the spray scrubber and the bag filter, the present invention can cool down the high-temperature flue gas. The cooled gas enters the lower dust collection chamber. After the gas enters the corresponding filter chamber, the dust removal bag adsorbs and filters the dust. When the gas enters the next corresponding filter chamber, it can clean the dust removal bag in the previous filter chamber, so that the operations of gas filtration and dust removal bag cleaning can be completed without stopping the machine, improving the treatment effect of the flue gas.

[0016] 2. By setting the gas collecting pipe, the branch gas pipe and the rotating frame, the present invention can send the cooled gas into the corresponding filter chamber. When it is necessary to change the gas to enter different filter chambers, the position of the branch gas pipe and the filter chamber can be adjusted to facilitate sending the gas into the corresponding filter chamber.

[0017] 3. By setting the closing mechanism, when the corresponding filter chamber is working, the air distribution holes are in an open state, so that the filtered gas can be discharged from the exhaust pipe through the upper gas collecting chamber. When the other filter chambers are not working, the air distribution holes can be closed to prevent the filtered gas in the upper gas collecting chamber from flowing back. Moreover, when cleaning the working filter chamber, it also prevents dust from entering the upper gas collecting chamber through the air distribution holes, affecting the quality of the gas in the upper gas collecting chamber.

[0018] 4. By setting the locking mechanism, the closing door can be disassembled and assembled in the dismounting groove, so that the draw rack can be pulled out of the filter chamber or installed in the filter chamber, facilitating disassembling and assembling the dust removal bag on the draw rack for replacing or cleaning the dust removal bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The 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. In the drawings: Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional sectional structural schematic diagram of the present invention; Figure 3 Schematic diagram of the front view sectional structure of the present invention; Figure 4 Schematic diagram of the side view sectional structure of the present invention; Figure 5 Schematic diagram of the top view sectional structure of the present invention; Figure 6 Schematic diagram of the bottom view sectional structure of the present invention; In the figure: 1, housing; 2, sealing plate; 3, filter column; 4, filter chamber; 5, air distribution hole; 6, dust collecting hopper; 7, gas filtering mechanism; 71, pull-out rack; 72, dust removal bag; 73, skeleton; 74, installation groove; 8, intake pipe; 9, dust discharge hopper; 10, air supply mechanism; 101, gas collecting pipe; 102, rotating joint; 103, branch pipe; 104, communicating hopper; 105, rotating frame; 11, exhaust pipe; 12, rotating plate; 13, closing plate; 14, driving mechanism; 141, reduction motor; 142, driving shaft; 143, upper connecting sleeve; 144, lower connecting sleeve; 15, closing door; 16, pressing rod. Specific embodiments

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment Please refer to Figure 1-6 , this embodiment provides the following technical solutions: A flue gas treatment device for an asphalt concrete mixer, including a gas collecting hood and a bag filter. The gas collecting hood is fixedly connected to the smoke outlet of the mixer. The gas outlet end of the gas collecting hood is connected to the gas inlet end of the bag filter through a spray scrubber. In some embodiments, the gas inlet end of the spray scrubber is connected to the gas outlet end of the gas collecting hood, and the gas outlet end of the spray scrubber is connected to the gas inlet end of the bag filter. During the operation of the mixer, the flue gas can enter the spray scrubbing tower through a negative pressure air extraction device, and the spray head sprays the flue gas to achieve the effect of cooling and temperature reduction. The sprayed gas enters the bag filter to filter the dust.

[0022] The bag filter includes a housing 1. A middle filter chamber is arranged inside the housing 1. A sealing plate 2 is fixedly connected inside the middle filter chamber. Air distribution holes 5 are circumferentially distributed on the sealing plate 2. A filter column 3 is fixedly connected below the sealing plate 2. A filter chamber 4 communicating with the air distribution holes 5 is arranged on the filter column 3. A dust collection hopper 6 is fixedly connected to the bottom of the filter chamber 4. An air vent groove is arranged on the dust collection hopper 6. The cooled gas enters the inner part of the lower dust collection chamber. After the gas enters the corresponding filter chamber 4, the dust removal bag 72 adsorbs and filters the dust. And when the gas enters the next corresponding filter chamber 4, it can clean the dust removal bag 72 in the previous filter chamber 4. Thus, the operations of gas filtration and dust removal bag 72 cleaning can be completed without stopping the machine, improving the treatment effect of the flue gas.

[0023] In some embodiments, there are four filter chambers 4. Two symmetrically arranged filter chambers 4 form a group. After the gas enters the housing 1, the gas selects one group of filter chambers 4 for filtration, while the other group of filter chambers 4 is in an unworking state. When the working states of the first group of filter chambers 4 and the second group of filter chambers 4 are switched with each other, the bag filter can clean the filtered dust removal bag 72 without stopping the machine.

[0024] A gas filtration mechanism 7 is arranged in the filter chamber 4. The gas filtration mechanism 7 includes a pull-out frame 71, an installation groove 74, a dust removal bag 72 and a framework 73. The pull-out frame 71 is movably connected inside a pull-out groove arranged on the sealing plate 2. Installation grooves 74 are circumferentially distributed on the pull-out frame 71. A dust removal bag 72 is movably connected to the installation groove 74. A framework 73 is arranged inside the dust removal bag 72. By arranging the framework 73, the dust removal bag 72 can be supported, enabling the gas to enter the inside of the dust removal bag 72 through the surface of the dust removal bag 72 and be discharged into the upper gas collection chamber from the air outlet end at the top of the dust removal bag 72, completing the filtration of the dust in the gas.

[0025] In some embodiments, the pull-out groove is arranged inside the sealing plate 2, and the outer end of the pull-out groove penetrates to the outside of the sealing plate 2 and the housing 1, facilitating the pull-out or insertion of the pull-out plate into the pull-out groove in a pulling manner, and facilitating the disassembly and assembly of the pull-out plate.

[0026] A lower dust collection chamber is arranged below the middle filter chamber inside the housing 1. An air inlet pipe 8 is fixedly connected to one side of the lower dust collection chamber. The air inlet end of the air inlet pipe 8 is connected to a gas collection hood. A dust discharge hopper 9 is fixedly connected to the bottom of the lower dust collection chamber. By arranging the air inlet pipe 8, the cooled gas can enter the inner part of the lower dust collection chamber. By arranging the dust discharge hopper 9, the dust in the lower dust collection chamber can be discharged.

[0027] An air supply mechanism 10 is arranged in the dust collection chamber. The air supply mechanism 10 includes a collecting pipe 101 and a distributing pipe 103. The collecting pipe 101 is connected to the intake pipe 8 through a rotating joint 102. A plurality of distributing pipes 103 are fixedly connected to the collecting pipe 101. The plurality of distributing pipes 103 are fixedly connected to each other through a rotating frame 105. The outlet end of the distributing pipe 103 is fixedly connected with a connecting hopper 104 adapted to the ventilation groove. In some embodiments, there are two distributing pipes 103, and the connecting hoppers 104 on the two distributing pipes 103 are arranged corresponding to one set of filtering chambers 4. Through the arranged collecting pipe 101 and distributing pipes 103, the gas discharged from the intake pipe 8 can be sent into one set of filtering chambers 4. When it is necessary to make the distributing pipe 103 correspond to the other set of filtering chambers 4, only by driving the rotating frame 105 to rotate can the distributing pipe 103 be driven to rotate, so that the connecting hopper 104 on the distributing pipe 103 is arranged corresponding to the new set of filtering chambers 4.

[0028] In some embodiments, the aperture of the intake end of the connecting hopper 104 is smaller than that of the outlet end of the connecting hopper 104, and the outlet end of the connecting hopper 104 is adapted to the intake end of the dust collecting hopper 6. The aperture of the outlet end of the dust collecting hopper 6 is larger than that of the intake end of the dust collecting hopper 6, which is beneficial to slowing down the flow rate of the gas entering the filtering chamber 4 and avoiding too fast flow rate of the gas entering the filtering chamber 4, causing a large impact on the dust removal bag 72 and affecting the filtering effect of the dust.

[0029] An upper air collecting chamber is arranged above the middle filtering chamber in the housing 1. An exhaust pipe 11 is fixedly connected to the upper air collecting chamber. In some embodiments, an activated carbon adsorber can also be connected to the outlet end of the exhaust pipe 11 to further adsorb the gas before the gas is discharged into the atmosphere. Through the arranged exhaust pipe 11, the gas in the upper air collecting chamber can be discharged from the housing 1.

[0030] A closing mechanism is arranged in the upper air collecting chamber. The closing mechanism includes a rotating plate 12 and a closing plate 13. The rotating plate 12 is rotatably connected to the sealing plate 2 and is arranged in contact with the sealing plate 2. A closing plate 13 adapted to the air distribution holes 5 is fixedly connected to the rotating plate 12. In some embodiments, there are two closing plates 13, and the two closing plates 13 are arranged perpendicular to the two distributing pipes 103. When the two closing plates 13 correspond to one set of filtering chambers 4, the corresponding filtering chambers 4 are closed. When the two distributing pipes 103 correspond to the other set of filtering chambers 4, the other set of filtering chambers 4 is in an open state for filtering dust.

[0031] Above the housing 1, a driving mechanism 14 is further provided. The driving mechanism 14 includes a driving shaft 142 and a reduction motor 141. The driving shaft 142 is rotatably connected to the sealing plate 2 and is in transmission connection with the reduction motor 141 provided on the housing 1. The other end of the driving shaft 142 passes through the filter column 3 and extends into the inner part of the lower dust collection chamber. An upper connecting sleeve 143 and a lower connecting sleeve 144 are fixedly sleeved on the driving shaft 142. The upper connecting sleeve 143 is fixedly connected to the rotating plate 12, and the lower connecting sleeve 144 is fixedly connected to the rotating frame 105. By providing the upper connecting sleeve 143 and the lower connecting sleeve 144, during the process of the reduction motor 141 driving the driving shaft 142 to rotate, the gas distribution pipe 103 and the closing plate 13 can be in the same state at the same time, so as to switch the working states of the two filter chambers 4.

[0032] On the side wall of the housing 1, a disassembly groove corresponding to the filter chamber 4 is provided. A closing door 15 is arranged in the disassembly groove. The closing door 15 is fixedly connected to the housing 1 through a locking mechanism. The locking mechanism includes a pressing rod 16. The inner wall of the pressing rod 16 is attached to the outer wall of the closing door 15. One end of the pressing rod 16 is rotatably connected to a fixed seat, and the other end of the pressing rod 16 is detachably connected to a disassembly seat. The disassembly seat is fixedly connected to the housing 1. In some embodiments, one end of the pressing rod 16 is rotatably connected to the fixed seat through a pin shaft, and the other end of the pressing rod 16 is fixedly connected to the disassembly seat through a bolt. By providing the pressing rod 16, the closing door 15 can be quickly disassembled and assembled on the housing 1, which is beneficial to the disassembly and assembly of the filtering mechanism.

[0033] In some embodiments, a sealing strip is provided between the parts where the closing door 15 is in contact with the housing 1. When the closing door 15 is closed on the disassembly groove, the sealing effect of the closing door 15 on the disassembly groove is improved, avoiding the gas in the filter chamber 4 from leaking out of the housing 1 and affecting the gas filtering effect.

[0034] It further includes a pulse jet cleaning device for cleaning the dust removal bag 72. The pulse jet cleaning device is arranged on the rotating plate 12. In some embodiments, the pulse jet cleaning device includes an air bag, a pulse valve, a blowing pipe and a Venturi tube. The air inlet end of the air bag is connected to the air outlet end of the air compression equipment, the air outlet end of the air bag is connected to the air inlet end of the pulse valve, the air outlet end of the pulse valve is connected to an air supply pipe fixedly connected to the housing 1, the air outlet end of the air supply pipe is connected to an air delivery pipe through a rotary joint, the air delivery pipe extends into the upper air collecting cavity and is connected to a blowing pipe, and the blowing pipe is communicated with a Venturi tube fixedly connected to the closing plate 13. The number of Venturi tubes is the same as the number of dust removal bags 72, and the air outlet end of the Venturi tube is arranged towards the air outlet end of the dust removal bag 72. By arranging the pulse jet cleaning device, when one set of filter chambers 4 needs to be cleaned after filtering, the branch air pipe 103 rotates to correspond to the other set of filter chambers 4, the closing plate 13 rotates above the filter chamber 4 to be cleaned, and the closing plate 13 closes the air distribution holes 5, so that the gas blows into the dust removal bag 72 through the Venturi tube, and the dust attached to the surface of the dust removal bag 72 is cleaned. The cleaned dust falls into the lower air collecting cavity along the filter chamber 4 and the dust collecting hopper 6, and then the dust discharge hopper 9 is opened to discharge the dust from the lower air collecting cavity.

[0035] The working principle of the present invention: When the mixer works, the flue gas enters the spray scrubber from the air collecting hood, the spray heads in the spray scrubber are started to cool down the entering flue gas, the cooled gas enters the gas collecting pipe 101 through the air inlet pipe 8, and then enters the corresponding two filter chambers 4 through two branch air pipes 103. When the gas passes through the dust removal bag 72, the dust adheres to the outer surface of the dust removal bag 72, the gas passes through the dust removal bag 72 and is discharged into the upper air collecting cavity through the air outlet end of the dust removal bag 72, and then is discharged from the housing 1 through the exhaust pipe 11; When it is necessary to replace the filter chamber 4 to filter the gas, the reduction motor 141 is started to drive the driving shaft 142 to drive the upper connecting sleeve 143 and the lower connecting sleeve 144 to rotate, so that the rotating frame 105 and the rotating plate 12 rotate simultaneously. The rotating frame 105 drives the branch air pipe 103 to move below the other set of filter chambers 4, so that the communicating hopper 104 is communicated with the dust collecting hopper 6, and the rotating plate 12 drives the closing plate 13 to move above the other set of filter chambers 4, so that the closing plate 13 closes the air distribution holes 5. At this time, the gas enters the new filter chamber 4 to filter the gas, so that the dust removal bag 72 can be cleaned or disassembled and assembled without stopping the machine.

[0036] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A flue gas treatment device for an asphalt concrete mixer, comprising a gas collecting hood and a bag filter. The gas collecting hood is fixedly connected to the smoke outlet of the mixer, and the gas outlet end of the gas collecting hood is connected to the gas inlet end of the bag filter through a spray scrubber; It is characterized in that: The bag filter includes a housing (1). A middle filtration chamber is arranged inside the housing (1). A sealing plate (2) is fixedly connected inside the middle filtration chamber. A filter column (3) is fixedly connected below the sealing plate (2). Filter chambers (4) are circumferentially distributed on the filter column (3). The top of the filter chamber (4) is communicated with the air distribution holes (5) arranged on the sealing plate (2). A dust collecting hopper (6) is fixedly connected to the bottom of the filter chamber (4); A gas filtration mechanism (7) is arranged inside the filter chamber (4). The gas filtration mechanism (7) includes a pull-out frame (71), an installation groove (74), a dust removal bag (72) and a framework (73). The pull-out frame (71) is movably connected inside the pull-out groove arranged on the sealing plate (2). Installation grooves (74) are circumferentially distributed on the pull-out frame (71). A dust removal bag (72) is movably connected to the installation groove (74). A framework (73) is arranged inside the dust removal bag (72).

2. The flue gas treatment device for an asphalt concrete mixer according to claim 1, characterized in that: A lower dust collecting chamber is arranged below the middle filtration chamber inside the housing (1). An air inlet pipe (8) is fixedly connected to one side of the lower dust collecting chamber. The air inlet end of the air inlet pipe (8) is connected to the gas collecting hood. A dust discharge hopper (9) is fixedly connected to the bottom of the lower dust collecting chamber.

3. The flue gas treatment device for an asphalt concrete mixer according to claim 1, characterized in that: An air supply mechanism (10) is arranged inside the lower dust collecting chamber. The air supply mechanism (10) includes a collecting pipe (101) and a branch pipe (103). The collecting pipe (101) is connected to the air inlet pipe (8) through a rotary joint (102). A plurality of branch pipes (103) are fixedly connected to the collecting pipe (101). The plurality of branch pipes (103) are fixedly connected to each other through a rotary frame (105). The air outlet end of the branch pipe (103) is fixedly connected to a communication hopper (104) adapted to the dust collecting hopper (6).

4. The flue gas treatment device for an asphalt concrete mixer according to claim 1, characterized in that: An upper gas collecting chamber is arranged above the middle filtration chamber inside the housing (1). An exhaust pipe (11) is fixedly connected to the upper gas collecting chamber.

5. The flue gas treatment device for an asphalt concrete mixing machine according to claim 1, characterized in that: A closing mechanism is arranged inside the upper gas collecting chamber. The closing mechanism includes a rotating plate (12) and a closing plate (13). The rotating plate (12) is rotatably connected to the sealing plate (2) and is arranged in a fitting manner with the sealing plate (2). A closing plate (13) adapted to the air distribution hole (5) is fixedly connected to the rotating plate (12).

6. The flue gas treatment device for an asphalt concrete mixer according to claim 1, wherein: Above the said housing (1), a driving mechanism (14) is further provided. The driving mechanism (14) includes a driving shaft (142) and a reduction motor (141). The driving shaft (142) is rotatably connected to the sealing plate (2) and is in transmission connection with the reduction motor (141) provided on the housing (1). The other end of the driving shaft (142) passes through the filter column (3) and extends into the inner part of the lower dust collection chamber. An upper connecting sleeve (143) and a lower connecting sleeve (144) are fixedly sleeved on the driving shaft (142). The upper connecting sleeve (143) is fixedly connected to the rotating plate (12), and the lower connecting sleeve (144) is fixedly connected to the rotating frame (105).

7. The flue gas treatment device for an asphalt concrete mixer according to claim 1, characterized in that: On the side wall of the said housing (1), a disassembly groove corresponding to the filter chamber (4) is provided. A closing door (15) is arranged in the disassembly groove, and the closing door (15) is fixedly connected to the housing (1) through a locking mechanism.

8. The flue gas treatment device for an asphalt concrete mixer according to claim 7, characterized in that: The locking mechanism includes a pressing rod (16). The inner wall of the pressing rod (16) is attached to the outer wall of the closing door (15). One end of the pressing rod (16) is rotatably connected to a fixed seat, and the fixed seat is fixedly connected to the housing (1). The other end of the pressing rod (16) is detachably connected to a disassembly seat, and the disassembly seat is fixedly connected to the housing (1).

9. The flue gas treatment device for an asphalt concrete mixer according to claim 5, characterized in that: It further includes a pulse jet dust cleaning device for performing dust cleaning operation on the dust removal bag (72). The pulse jet dust cleaning device is arranged on the rotating plate (12).

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