Tail gas treatment structure of asphalt mixing station

Abstract

The embodiment of the utility model provides a tail gas treatment structure of an asphalt mixing station, and relates to the technical field of tail gas treatment equipment. The tail gas treatment structure of the asphalt mixing station comprises a suction type gas collecting hood, the top of the suction type gas collecting hood is fixedly connected with a dust suction pipe, and one end, far away from the suction type gas collecting hood, of the dust suction pipe is fixedly connected with a cyclone dust collector. The first draught fan is started, so that tail gas enters the cyclone dust collector from the dust suction pipe, the tail gas rotates and descends under the inertia effect, dust and gas are separated through centrifugal force generated by rotating motion, the dust is collected through the dust collection box, hot air subjected to primary purification is sucked into the smoke pipeline and then fed into the cloth bag dust collection box, and the dust collection box is used for collecting dust. The tail gas subjected to primary filtration is discharged into a bag dust removal box through a flue gas pipeline, and dust in the tail gas is subjected to secondary filtration by a dustproof bag, so that fine particulate matters are removed.

Description

Technical Field

[0001] This utility model relates to the technical field of exhaust gas treatment equipment, and in particular to an exhaust gas treatment structure for an asphalt mixing plant. Background Technology

[0002] Asphalt mixing plants mainly use drums to mix asphalt with other materials in a high-temperature environment. During the mixing process, a large amount of exhaust gas is generated. This exhaust gas is not only toxic and harmful, but also contains a lot of dust. If it is directly emitted, it will cause serious environmental pollution.

[0003] In the existing technology (application number CN215842452U, patent title: An Asphalt Mixing Plant Exhaust Gas Treatment System), a dust collection box is used to remove dust from the exhaust gas for preliminary purification. Then, a treatment liquid in the treatment box further adsorbs and removes toxic and harmful substances. The purified exhaust gas is then discharged through an exhaust pipe, where activated carbon filters further purify the gas. This structural design can completely purify the exhaust gas and achieve pollution-free emissions. However, in implementing this technical solution, the inventors discovered at least the following problems in the existing technology:

[0004] Traditional exhaust gas treatment methods mainly include cyclone dust collectors, bag filters, and wet scrubbers. Although these methods can reduce the emission of particulate matter and some harmful gases to a certain extent, they are prone to filter bag clogging due to dust accumulation, which affects equipment performance and service life. In addition, frequent cleaning of filter bags increases operating costs and maintenance difficulty. Utility Model Content

[0005] The purpose of this utility model is to provide an exhaust gas treatment structure for asphalt mixing plants, which can avoid the problem of filter bags being easily clogged due to dust accumulation, thus affecting equipment performance and service life.

[0006] This utility model provides a tail gas treatment structure for an asphalt mixing plant, including a suction-type gas collection hood. A dust collection pipe is fixedly connected to the top of the suction-type gas collection hood. A cyclone dust collector is fixedly connected to the end of the dust collection pipe furthest from the suction-type gas collection hood. A dust collection box is fixedly connected to the bottom of the cyclone dust collector. A blower is fixedly connected to the top of the cyclone dust collector. A flue gas duct is fixedly connected to the exhaust end of the blower. A bag filter dust collector is fixedly connected to the end of the flue gas duct furthest from the blower. The structure also includes:

[0007] The bottom of the bag filter box is fixedly connected to a dust conveying cylinder, the inner wall of the bag filter box is fixedly connected to a layered plate, the bottom of the layered plate is fixedly connected to a dustproof bag, and the bottom end of the dustproof bag is fixedly connected to a connecting frame.

[0008] Preferably, a servo motor is fixedly connected to the outer wall of the dust collection cylinder, and a drive rod is fixedly connected to the output end of the servo motor. One end of the drive rod passes through the outer wall of the dust collection cylinder and extends to the outside. A spiral dust collection plate is fixedly connected to the outer wall of the drive rod. A dust discharge port is fixedly connected to the bottom of the dust collection cylinder, and a sealing plate is inserted into the inside of the dust discharge port.

[0009] Preferably, the outer wall of the drive rod is provided with a collision mechanism, the collision mechanism including a belt sleeved on the outer wall of the drive rod, a drive rod being drivenly connected to the inner wall of the belt, one end of the drive rod penetrating the side wall of the bag filter box and extending to the inner side, and a teardrop-shaped pressing block being fixedly connected to the outer wall of the drive rod.

[0010] Preferably, a fixed sliding rod is fixedly connected to the bottom of the layered plate, a reset plate is slidably connected to the outer wall of the fixed sliding rod, a reset spring is fixedly connected to the top of the reset plate, the end of the reset spring away from the reset plate is fixedly connected to the bottom of the layered plate, and a collision rod is fixedly connected to the top of the reset plate.

[0011] Preferably, the inner wall of the bag filter dust collector is provided with a lifting mechanism. The lifting mechanism includes a fixed shaft fixedly connected to the inner wall of the bag filter dust collector. A reciprocating plate is rotatably connected to the outer wall of the fixed shaft. A reciprocating groove is opened on the side wall of the reciprocating plate. An eccentric rod is slidably connected to the inner wall of the reciprocating groove. An eccentric disk is fixedly connected to one end of the eccentric rod. The side wall of the eccentric disk is fixedly connected to one end of the transmission rod. A pull rod is fixedly connected to the side wall of the reciprocating plate.

[0012] Preferably, a lifting frame is fixedly connected to the top of the connecting frame, and the side wall of the lifting frame is in contact with the outer wall of the pull rod.

[0013] Preferably, a cleaning mechanism is provided at the other end of the transmission rod. The cleaning mechanism includes an eccentric disk II fixedly connected to the other end of the transmission rod, an eccentric rod II fixedly connected to the side wall of the eccentric disk II, a lifting groove plate slidably connected to the outer wall of the eccentric rod II, and a pressing rod fixedly connected to the top of the lifting groove plate.

[0014] Preferably, an air suction box is fixedly connected to the side wall of the bag filter box, an extrusion plate is slidably connected to the inner wall of the air suction box, the bottom of the extrusion plate is fixedly connected to the top of the extrusion rod, an air inlet one-way valve is fixedly connected to the top of the air suction box, an exhaust pipe is connected to the side wall of the air suction box, an exhaust one-way valve is fixedly connected to the outer wall of the exhaust pipe, and an air jet port is fixedly connected to the outer wall of the exhaust pipe.

[0015] Preferably, the top of the bag filter box is provided with an exhaust port, the top of the bag filter box is fixedly connected to an activated carbon adsorption box, and the side wall of the activated carbon adsorption box is connected to an exhaust pipe.

[0016] Preferably, the end of the gas outlet pipe away from the activated carbon adsorption box is connected to a catalytic combustion chamber, a second fan is fixedly connected to the side wall of the catalytic combustion chamber, and an exhaust chimney is fixedly connected to the exhaust end of the second fan.

[0017] The beneficial effects of this application are:

[0018] 1. The exhaust gas treatment structure of this asphalt mixing plant includes a suction-type gas collection hood installed at the exhaust port of the mixing plant to collect high-temperature flue gas and dust. When the fan is started, the exhaust gas enters the cyclone dust collector through the dust suction pipe. The exhaust gas rotates and descends under the action of inertia. The centrifugal force generated by the rotational motion separates the dust from the gas. The dust collection box collects the dust. The hot air that has undergone the initial purification is drawn into the flue gas duct and then sent to the bag filter dust collector. The exhaust gas that has undergone the initial filtration is discharged into the bag filter dust collector through the flue gas duct. The dust filter bags perform secondary filtration of the dust in the exhaust gas to remove fine particulate matter.

[0019] 2. In this asphalt mixing plant exhaust gas treatment structure, the drive rod transmits power to the transmission rod via a belt. The transmission rod drives the teardrop-shaped lower pressure block to rotate. When the teardrop-shaped lower pressure block contacts the reset plate, it presses down on it. When the teardrop-shaped lower pressure block no longer contacts the reset plate, the reset spring pushes the reset plate back to its original position. During the reset process, the collision rod strikes the layering plate, causing it to vibrate. The vibration of the layering plate is transmitted to the dustproof bag, causing the dust on the surface of the bag to fall off, effectively reducing the accumulation of dust on the surface of the dustproof bag, improving dust removal efficiency, and extending the service life of the equipment.

[0020] 3. The exhaust gas treatment structure of this asphalt mixing plant, when the transmission rod rotates, drives the eccentric disc one and eccentric rod one to rotate. Eccentric rod one moves in the reciprocating groove, thereby causing the reciprocating plate to reciprocate around the fixed shaft. The swing of the reciprocating plate and the tie rod drives the lifting frame to move up and down. The up and down movement of the lifting frame is transmitted to the dustproof bag through the connecting frame, thereby causing the dust in the dustproof bag to fall off, avoiding dust accumulation that affects the performance of the equipment. The transmission rod drives the eccentric disc two and eccentric rod two to move. Eccentric rod two pushes the lifting groove plate to rise and fall. The rising movement of the lifting groove plate is transmitted to the extrusion plate through the extrusion rod. The extrusion plate moves up and down in the air intake box, compressing the gas in the box. The compressed gas is transmitted to the jet nozzle through the exhaust pipe. The jet nozzle sprays high-pressure gas into the interior of the dustproof bag.

[0021] 4. The exhaust gas treatment structure of this asphalt mixing plant allows the exhaust gas, after secondary filtration, to enter the activated carbon adsorption box through the exhaust port. The activated carbon in the activated carbon adsorption box adsorbs the organic pollutants in the exhaust gas, effectively reducing the concentration of harmful substances. The adsorbed gas is then transmitted to the catalytic combustion chamber through the exhaust pipe. A catalyst is added to the catalytic combustion chamber, and under the action of the catalyst, the combustion temperature of the organic pollutants is reduced, allowing them to be fully combusted and decomposed at a lower temperature. The clean gas after catalytic combustion treatment is discharged into the atmosphere through the exhaust chimney. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 2 This is a three-dimensional schematic diagram of the cyclone dust collector structure according to an embodiment of the present utility model;

[0025] Figure 3 This is a three-dimensional schematic diagram of the bag filter dust collector structure according to an embodiment of the present utility model;

[0026] Figure 4 This is a three-dimensional sectional view of the internal structure of the bag filter dust collector according to an embodiment of the present utility model;

[0027] Figure 5 This is a three-dimensional schematic diagram of the dust outlet structure according to an embodiment of the present utility model;

[0028] Figure 6 This is a three-dimensional schematic diagram of the reciprocating plate structure according to an embodiment of the present utility model;

[0029] Figure 7 This is a three-dimensional schematic diagram of the collision mechanism structure according to an embodiment of the present utility model;

[0030] Figure 8 This is a three-dimensional schematic diagram of the lifting mechanism structure according to an embodiment of the present utility model;

[0031] Figure 9 This is a three-dimensional schematic diagram of the cleaning mechanism structure according to an embodiment of the present utility model;

[0032] Figure 10 This is a three-dimensional schematic diagram of the catalytic combustion chamber structure according to an embodiment of the present invention.

[0033] Icons: 101. Suction-type dust collection hood; 102. Suction pipe; 103. Cyclone dust collector; 104. Dust collection box; 105. Fan 1; 106. Flue gas duct; 201. Bag dust collector box; 202. Dust conveyor; 203. Layered plate; 204. Dustproof bag; 205. Connecting frame; 21. Servo motor; 22. Drive rod; 23. Spiral dust conveyor plate; 24. Dust outlet; 25. Sealing plate; 3. Collision mechanism; 301. Belt; 302. Transmission rod; 303. Teardrop-shaped lower pressure block; 304. Fixed slide rod; 305. Reset plate; 306. Reset spring; 307. Collision rod; 4. Lifting mechanism Mechanism; 401, Fixed shaft; 402, Reciprocating plate; 403, Reciprocating groove; 404, Eccentric rod one; 405, Eccentric disc one; 406, Tie rod; 407, Lifting frame; 5, Cleaning mechanism; 501, Eccentric disc two; 502, Eccentric rod two; 503, Lifting groove plate; 504, Extrusion rod; 505, Intake box; 506, Extrusion plate; 507, Intake one-way valve; 508, Exhaust pipe; 509, Exhaust one-way valve; 510, Jet nozzle; 601, Exhaust port; 602, Activated carbon adsorption box; 603, Exhaust pipe; 604, Catalytic combustion chamber; 605, Fan two; 606, Exhaust chimney. Detailed Implementation

[0034] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] Please refer to Figures 1 to 10 This utility model provides a tail gas treatment structure for an asphalt mixing plant, including a suction-type gas collection hood 101. A dust collection pipe 102 is fixedly connected to the top of the suction-type gas collection hood 101. A cyclone dust collector 103 is fixedly connected to the end of the dust collection pipe 102 furthest from the suction-type gas collection hood 101. This arrangement is to install the suction-type gas collection hood 101 at the mixing plant to collect high-temperature flue gas and dust. When a fan 105 is started, the tail gas enters the cyclone dust collector 103 from the dust collection pipe 102. The tail gas rotates and descends under inertia, and the centrifugal force generated by the rotational motion separates the dust from the gas. A dust collection box 104 is fixedly connected to the bottom of the cyclone dust collector 103, and a fan 105 is fixedly connected to the top of the cyclone dust collector 103. A flue gas pipe 106 is fixedly connected to the exhaust end of the fan 105, and a bag filter box 201 is fixedly connected to the end of the flue gas pipe 106 furthest from the fan 105. The structure also includes:

[0036] The bottom of the bag filter 201 is fixedly connected to a dust collection cylinder 202, and the inner wall of the bag filter 201 is fixedly connected to a layered plate 203. The bottom of the layered plate 203 is fixedly connected to a dustproof bag 204. This arrangement is for the dustproof bag 204 to perform secondary filtration of dust in the exhaust gas and remove fine particulate matter. The bottom end of the dustproof bag 204 is fixedly connected to a connecting frame 205.

[0037] A servo motor 21 is fixedly connected to the outer wall of the dust collection cylinder 202. A drive rod 22 is fixedly connected to the output end of the servo motor 21. One end of the drive rod 22 passes through the outer wall of the dust collection cylinder 202 and extends to the outside. A spiral dust collection plate 23 is fixedly connected to the outer wall of the drive rod 22. A dust discharge port 24 is fixedly connected to the bottom of the dust collection cylinder 202. This arrangement is so that the servo motor 21 drives the drive rod 22 and the spiral dust collection plate 23 to start rotating. During the rotation, the spiral dust collection plate 23 pushes the dust along the dust collection cylinder 202 to the dust discharge port 24. A sealing plate 25 is inserted into the inside of the dust discharge port 24.

[0038] The outer wall of the drive rod 22 is provided with a collision mechanism 3. The collision mechanism 3 includes a belt 301 sleeved on the outer wall of the drive rod 22. The inner wall of the belt 301 is connected to a transmission rod 302. One end of the transmission rod 302 passes through the side wall of the bag dust collector 201 and extends to the inner side. A teardrop-shaped pressing block 303 is fixedly connected to the outer wall of the transmission rod 302. A fixed sliding rod 304 is fixedly connected to the bottom of the layer plate 203. A reset plate 305 is slidably connected to the outer wall of the fixed sliding rod 304. A reset spring 306 is fixedly connected to the top of the reset plate 305. The end of the reset spring 306 away from the reset plate 305 is fixedly connected to the bottom of the layer plate 203. A collision rod 307 is fixedly connected to the top of the reset plate 305. This arrangement facilitates the collision rod 307 to impact the layer plate 203.

[0039] The inner wall of the bag filter dust collector 201 is provided with a lifting mechanism 4. The lifting mechanism 4 includes a fixed shaft 401 fixedly connected to the inner wall of the bag filter dust collector 201. A reciprocating plate 402 is rotatably connected to the outer wall of the fixed shaft 401. A reciprocating groove 403 is opened on the side wall of the reciprocating plate 402. An eccentric rod 404 is slidably connected to the inner wall of the reciprocating groove 403. An eccentric disk 405 is fixedly connected to one end of the eccentric rod 404. The side wall of the eccentric disk 405 is fixedly connected to one end of the transmission rod 302. A pull rod 406 is fixedly connected to the side wall of the reciprocating plate 402. A lifting frame 407 is fixedly connected to the top of the connecting frame 205. The side wall of the lifting frame 407 is in contact with the outer wall of the pull rod 406.

[0040] The other end of the transmission rod 302 is provided with a cleaning mechanism 5. The cleaning mechanism 5 includes an eccentric disk 501 fixedly connected to the other end of the transmission rod 302. An eccentric rod 502 is fixedly connected to the side wall of the eccentric disk 501. A lifting trough plate 503 is slidably connected to the outer wall of the eccentric rod 502. This arrangement is for the transmission rod 302 to drive the eccentric disk 501 and the eccentric rod 502 to move. The eccentric rod 502 pushes the lifting trough plate 503 to rise and fall. A pressing rod 504 is fixedly connected to the top of the lifting trough plate 503.

[0041] A suction box 505 is fixedly connected to the side wall of the bag filter 201. An extrusion plate 506 is slidably connected to the inner wall of the suction box 505. The bottom of the extrusion plate 506 is fixedly connected to the top of the extrusion rod 504. An inlet one-way valve 507 is fixedly connected to the top of the suction box 505. An exhaust pipe 508 is connected to the side wall of the suction box 505. An exhaust one-way valve 509 is fixedly connected to the outer wall of the exhaust pipe 508. An air jet port 510 is fixedly connected to the outer wall of the exhaust pipe 508. This arrangement is so that the compressed gas is transmitted to the air jet port 510 through the exhaust pipe 508. The air jet port 510 sprays high-pressure gas into the interior of the dust filter bag 204.

[0042] The bag filter dust collector 201 has an exhaust port 601 on its top. An activated carbon adsorption box 602 is fixedly connected to the top of the bag filter dust collector 201. This is designed so that the activated carbon in the activated carbon adsorption box 602 can adsorb organic pollutants in the exhaust gas, effectively reducing the concentration of harmful substances. An exhaust pipe 603 is connected to the side wall of the activated carbon adsorption box 602. The end of the exhaust pipe 603 away from the activated carbon adsorption box 602 is connected to a catalytic combustion chamber 604. A second fan 605 is fixedly connected to the side wall of the catalytic combustion chamber 604. An exhaust chimney 606 is fixedly connected to the exhaust end of the second fan 605. This is designed so that a catalyst can be added to the catalytic combustion chamber 604. Under the action of the catalyst, the combustion temperature of organic pollutants is reduced, so that they can be fully burned and decomposed at a lower temperature. The clean gas after catalytic combustion is discharged into the atmosphere through the exhaust chimney 606.

[0043] In summary, the working principle of the exhaust gas treatment structure of an asphalt mixing plant according to this utility model embodiment is as follows: When in use, the suction-type gas collection hood 101 is installed at the mixing plant to collect high-temperature flue gas and dust. The fan 105 is started, so that the exhaust gas enters the cyclone dust collector 103 from the dust suction pipe 102. The exhaust gas rotates and descends under the action of inertia. The centrifugal force generated by the rotational motion separates the dust from the gas. The dust collection box 104 collects the dust. The hot air that has been initially purified is drawn into the flue gas pipe 106 and then sent into the bag dust collector 201. The exhaust gas that has been initially filtered is discharged into the bag dust collector 201 through the flue gas pipe 106. The dustproof bag 204 performs secondary filtration on the dust in the exhaust gas to remove fine particulate matter.

[0044] When the dust accumulated on the dustproof bag 204 reaches a certain amount, it needs to be cleaned. The staff pulls the sealing plate 25 to open the dust discharge port 24, and turns on the servo motor 21, which drives the drive rod 22 and the spiral dust conveying plate 23 to start rotating. During the rotation, the spiral dust conveying plate 23 pushes the dust along the dust conveying cylinder 202 to the dust discharge port 24. After the dust is cleaned, the staff pulls the sealing plate 25 again to close the dust discharge port 24 and restore the system to normal operation.

[0045] The drive rod 22 transmits power to the transmission rod 302 via the belt 301. The transmission rod 302 drives the teardrop-shaped pressing block 303 to rotate. When the teardrop-shaped pressing block 303 contacts the reset plate 305, it presses it down. When the teardrop-shaped pressing block 303 no longer contacts the reset plate 305, the reset spring 306 pushes the reset plate 305 back to its original position. During the reset process, the collision rod 307 impacts the layer plate 203, causing it to vibrate. The vibration of the layer plate 203 is transmitted to the dustproof bag 204, causing the dust on the surface of the bag to fall off, effectively reducing the accumulation of dust on the surface of the dustproof bag 204, improving the dust removal efficiency, and extending the service life of the equipment.

[0046] When the transmission rod 302 rotates, it drives the eccentric disc 405 and the eccentric rod 404 to rotate. The eccentric rod 404 moves in the reciprocating groove 403, which causes the reciprocating plate 402 to reciprocate around the fixed shaft 401. The swing of the reciprocating plate 402 and the tie rod 406 drives the lifting frame 407 to move up and down. The up and down movement of the lifting frame 407 is transmitted to the dustproof bag 204 through the connecting frame 205, which causes the dust in the dustproof bag 204 to fall off, thus preventing dust accumulation from affecting the performance of the equipment.

[0047] The transmission rod 302 drives the eccentric disc 501 and the eccentric rod 502 to move. The eccentric rod 502 pushes the lifting trough plate 503 to rise and fall. The rising motion of the lifting trough plate 503 is transmitted to the extrusion plate 506 through the extrusion rod 504. The extrusion plate 506 moves up and down in the air intake box 505, compressing the gas in the box. The compressed gas is transmitted to the jet nozzle 510 through the exhaust pipe 508. The jet nozzle 510 sprays the high-pressure gas into the interior of the dustproof bag 204.

[0048] After secondary filtration, the exhaust gas enters the activated carbon adsorption box 602 through the exhaust port 601. The activated carbon in the activated carbon adsorption box 602 adsorbs organic pollutants in the exhaust gas, effectively reducing the concentration of harmful substances. The adsorbed gas is transmitted to the catalytic combustion chamber 604 through the exhaust pipe 603. A catalyst is added to the catalytic combustion chamber 604. Under the action of the catalyst, the combustion temperature of organic pollutants is reduced, allowing them to be fully burned and decomposed at a lower temperature. The clean gas after catalytic combustion treatment is discharged into the atmosphere through the exhaust chimney 606.

[0049] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An exhaust gas treatment structure for an asphalt mixing plant, comprising a suction-type gas collection hood (101), wherein a dust collection pipe (102) is fixedly connected to the top of the suction-type gas collection hood (101), a cyclone dust collector (103) is fixedly connected to the end of the dust collection pipe (102) away from the suction-type gas collection hood (101), a dust collection box (104) is fixedly connected to the bottom of the cyclone dust collector (103), a blower (105) is fixedly connected to the top of the cyclone dust collector (103), a flue gas duct (106) is fixedly connected to the exhaust end of the blower (105), and a bag filter dust collector (201) is fixedly connected to the end of the flue gas duct (106) away from the blower (105), characterized in that, Also includes: The bottom of the bag dust collector (201) is fixedly connected to a dust conveying cylinder (202), the inner wall of the bag dust collector (201) is fixedly connected to a layered plate (203), the bottom of the layered plate (203) is fixedly connected to a dustproof bag (204), and the bottom end of the dustproof bag (204) is fixedly connected to a connecting frame (205).

2. The asphalt mixing plant exhaust gas treatment structure according to claim 1, characterized in that: A servo motor (21) is fixedly connected to the outer wall of the dust collection cylinder (202). A drive rod (22) is fixedly connected to the output end of the servo motor (21). One end of the drive rod (22) passes through the outer wall of the dust collection cylinder (202) and extends to the outside. A spiral dust collection plate (23) is fixedly connected to the outer wall of the drive rod (22). A dust discharge port (24) is fixedly connected to the bottom of the dust collection cylinder (202). A sealing plate (25) is inserted into the inside of the dust discharge port (24).

3. The asphalt mixing plant exhaust gas treatment structure according to claim 2, characterized in that: The outer wall of the drive rod (22) is provided with a collision mechanism (3). The collision mechanism (3) includes a belt (301) sleeved on the outer wall of the drive rod (22). The inner wall of the belt (301) is connected to a transmission rod (302). One end of the transmission rod (302) passes through the side wall of the bag dust collector (201) and extends to the inner side. The outer wall of the transmission rod (302) is fixedly connected to a teardrop-shaped pressing block (303).

4. The asphalt mixing plant exhaust gas treatment structure according to claim 3, characterized in that: A fixed slide rod (304) is fixedly connected to the bottom of the layered plate (203). A reset plate (305) is slidably connected to the outer wall of the fixed slide rod (304). A reset spring (306) is fixedly connected to the top of the reset plate (305). The end of the reset spring (306) away from the reset plate (305) is fixedly connected to the bottom of the layered plate (203). A collision rod (307) is fixedly connected to the top of the reset plate (305).

5. The asphalt mixing plant exhaust gas treatment structure according to claim 4, characterized in that: The inner wall of the bag dust collector (201) is provided with a lifting mechanism (4). The lifting mechanism (4) includes a fixed shaft (401) fixedly connected to the inner wall of the bag dust collector (201). The outer wall of the fixed shaft (401) is rotatably connected to a reciprocating plate (402). The side wall of the reciprocating plate (402) is provided with a reciprocating groove (403). The inner wall of the reciprocating groove (403) is slidably connected to an eccentric rod (404). One end of the eccentric rod (404) is fixedly connected to an eccentric disk (405). The side wall of the eccentric disk (405) is fixedly connected to one end of a transmission rod (302). The side wall of the reciprocating plate (402) is fixedly connected to a pull rod (406).

6. The asphalt mixing plant exhaust gas treatment structure according to claim 1, characterized in that: The top of the connecting frame (205) is fixedly connected to the lifting frame (407), and the side wall of the lifting frame (407) is in contact with the outer wall of the pull rod (406).

7. The asphalt mixing plant exhaust gas treatment structure according to claim 3, characterized in that: The other end of the transmission rod (302) is provided with a cleaning mechanism (5). The cleaning mechanism (5) includes an eccentric disk (501) fixedly connected to the other end of the transmission rod (302). An eccentric rod (502) is fixedly connected to the side wall of the eccentric disk (501). A lifting groove plate (503) is slidably connected to the outer wall of the eccentric rod (502). A pressing rod (504) is fixedly connected to the top of the lifting groove plate (503).

8. The asphalt mixing plant exhaust gas treatment structure according to claim 1, characterized in that: The side wall of the bag filter box (201) is fixedly connected to a suction box (505). The inner wall of the suction box (505) is slidably connected to a pressing plate (506). The bottom of the pressing plate (506) is fixedly connected to the top of the pressing rod (504). The top of the suction box (505) is fixedly connected to an inlet one-way valve (507). The side wall of the suction box (505) is connected to an exhaust pipe (508). The outer wall of the exhaust pipe (508) is fixedly connected to an exhaust one-way valve (509). The outer wall of the exhaust pipe (508) is fixedly connected to a jet nozzle (510).

9. The asphalt mixing plant exhaust gas treatment structure according to claim 1, characterized in that: The top of the bag filter box (201) is provided with an exhaust port (601), and the top of the bag filter box (201) is fixedly connected to an activated carbon adsorption box (602). The side wall of the activated carbon adsorption box (602) is connected to an exhaust pipe (603).

10. The asphalt mixing plant exhaust gas treatment structure according to claim 9, characterized in that: The end of the exhaust pipe (603) away from the activated carbon adsorption box (602) is connected to a catalytic combustion chamber (604). A second fan (605) is fixedly connected to the side wall of the catalytic combustion chamber (604), and an exhaust chimney (606) is fixedly connected to the exhaust end of the second fan (605).

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