Asphalt mixing station exhaust gas purification device

Abstract

The present invention belongs to the technical field of waste gas treatment, and specifically refers to an asphalt mixing plant waste gas purification device, comprising a base plate, a bracket and an induced draft fan are fixedly mounted on the base plate, a spray tower is fixedly mounted on the base plate, an air inlet pipe is connected at the bottom end of the side wall of the spray tower, a replaceable air inlet connecting mechanism is arranged on the outer wall of the spray tower, and a reciprocating vibration and dredging mechanism is arranged in the spray tower; the replaceable air inlet connecting mechanism comprises a connecting pipe, an up and down flip replacement assembly and a two-way blocking assembly; the connecting part of the air inlet pipe can be rotated and replaced, and when one group of connecting parts works normally, the other group of blocked connecting parts can be maintained and cleaned without stopping the machine for disassembly, and while the driving force rotates the replacement connecting parts, the mesh of the filter screen plate at the bottom of the spray tower is vibrated and dredged to ensure that the spray liquid can pass through the filter screen plate smoothly, thereby improving the operation efficiency and stability of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of waste gas treatment, and specifically refers to a waste gas purification device for an asphalt mixing station. Background Art

[0002] Asphalt mixing plants generate a large amount of waste gas during the production process. These waste gases contain various pollutants such as dust, particulate matter, and volatile organic compounds (VOCs). If they are not effectively treated, these waste gases will cause serious harm to the environment and human health.

[0003] In the existing asphalt mixing station exhaust gas purification device, a filter is usually set in the air intake pipe part to filter large particles of impurities in the exhaust gas. However, in the actual operation process, the filter is easily blocked by large particles of impurities in the exhaust gas, affecting the normal circulation of the exhaust gas. When the filter is blocked, it is necessary to stop the machine and disassemble it for cleaning, which not only increases the maintenance cost and workload, but also affects the normal production of the asphalt mixing station; the spray tower is an important component of the asphalt mixing station exhaust gas purification device, which washes and purifies the exhaust gas by spraying liquid. After the spray liquid falls to the bottom, it usually needs to be filtered through a filter plate to remove impurities therein so that the spray liquid can be recycled. However, the filter plate is also easily blocked by impurities during use, resulting in poor circulation of the spray liquid, affecting the purification effect of the spray tower. Moreover, the blockage of the filter plate will also increase the maintenance cost and workload, and reduce the operating efficiency of the exhaust gas purification device. Summary of the invention

[0004] In order to solve the problems of easy clogging of the air intake pipe filter and clogging of the spray tower filter screen in the existing asphalt mixing station exhaust gas purification device, the present invention provides an asphalt mixing station exhaust gas purification device which provides a connection part of the air intake pipe that can be rotated and replaced. When one group of connection parts is working normally, the other group of blocked connection parts can be maintained and cleaned without stopping the machine for disassembly. While the driving force rotates to replace the connection parts, the mesh holes of the filter screen plate at the bottom of the spray tower are vibrated and unblocked to ensure that the spray liquid can pass through the filter screen plate smoothly, thereby improving the operating efficiency and stability of the device.

[0005] In order to achieve the above functions, the technical solution adopted by the present invention is as follows: an asphalt mixing station exhaust gas purification device, comprising a base plate, a bracket and an induced draft fan are fixedly installed on the base plate, a spray tower is fixedly installed on the base plate, an air intake pipe is connected at the bottom end of the side wall of the spray tower, a replaceable air intake connecting mechanism is provided on the outer wall of the spray tower, and a reciprocating vibration and dredging mechanism is provided in the spray tower; the replaceable air intake connecting mechanism comprises a connecting pipe, an upside down flip replacement assembly and a two-way sealing assembly, the connecting pipe is provided in two groups, the connecting pipe is detachably connected to the air intake pipe, the upside down flip replacement assembly is provided on the outer wall of the spray tower, and the two-way sealing assembly is installed on the connecting pipe; the reciprocating vibration and dredging mechanism comprises a movable fence mesh plate and an eccentrically driven piston cylinder assembly, the movable fence mesh plate is movably arranged in the spray tower, and the eccentrically driven piston cylinder assembly is installed on the base plate.

[0006] As a preferred technical solution of the present invention, the upside-down flip replacement assembly includes a driving wheel and a groove wheel, the driving wheel is rotatably arranged on the outer wall of the spray tower, a protruding rod is arranged on the side wall of the driving wheel, and two groups of protruding rods are arranged, a support plate is fixedly installed on the outer wall of the spray tower, the groove wheel is rotatably arranged on the side wall of the support plate, the groove of the groove wheel is matched with the protruding rod, a central axis is rotatably passed through the support plate, one end of the central axis is connected to the groove wheel, and the other end of the central axis is fixedly connected to the central plate, and the two groups of connecting pipes are respectively fixedly installed on the upper and lower ends of the central plate.

[0007] As a preferred technical solution of the present invention, the two-way sealing assembly includes a connecting ring, which is slidably sleeved on the two side ports of the connecting pipe, and a sealing airbag is fixedly sleeved at the joint between the connecting ring and the connecting pipe. A support block is fixedly arranged on the outer wall of the connecting pipe, and a two-way piston cylinder is installed on the support block. An air hole is opened at the middle position of the two-way piston cylinder, and piston rods are penetrated on both sides of the two-way piston cylinder. The piston rod is fixedly connected to the connecting ring, and an air passage is penetrated by the sealing airbag and the end of the two-way piston cylinder, and a two-way telescopic cylinder is installed on the center plate, and the output ends on both sides of the two-way telescopic cylinder are connected to an annular movable plate, and the upper and lower sides of the annular movable plate are fixedly connected to the corresponding connecting rings.

[0008] The top of the spray tower is connected to an induced draft duct, which is connected to the air inlet of an induced draft fan, and the air outlet of the induced draft fan is connected to an air supply duct. A coil is fixedly installed on the top of the interior of the spray tower, and spray heads are evenly connected under the coil. A filter screen is detachably installed inside the spray tower.

[0009] As a preferred technical solution of the present invention, a driving motor is fixedly mounted on the bracket, and a transmission belt is provided on the output end transmission sleeve of the driving motor, and the transmission belt is drivingly connected to the rotating shaft of the driving wheel.

[0010] As a preferred technical solution of the present invention, the eccentrically driven piston cylinder assembly includes a piston cylinder one, a piston cylinder two and a disc, the piston cylinder one is fixedly mounted on the bottom plate, the output end of the piston cylinder one is fixedly provided with a groove rail, the disc is connected to the output end of the driving motor, an eccentric rod is provided on the side wall of the disc away from the center of the circle, the eccentric rod is slidably arranged in the groove rail, the piston cylinder two is fixedly mounted on the bottom plate, the output end of the piston cylinder two moves through the bottom wall of the spray tower and is connected to the movable fence mesh plate, and a ventilation pipe is passed through the bottom ends of the piston cylinder two and the piston cylinder one.

[0011] As a preferred technical solution of the present invention, the movable fence mesh plate is located directly below the filter mesh plate, and dredging rods are evenly arranged on the movable fence mesh plate, and the dredging rods are arranged in a one-to-one correspondence with the mesh holes of the filter mesh plate.

[0012] As a preferred technical solution of the present invention, a circulating pump is fixedly installed on the outer wall of the spray tower, the water inlet of the circulating pump is connected to a pumping pipe, the pumping pipe is connected to the bottom of the spray tower, and the water outlet of the circulating pump is connected to a water pipe, and the water pipe is connected to the coil.

[0013] Compared with the prior art, the present invention adopts the above structure to achieve the following beneficial effects:

[0014] 1. When the filter screen of the traditional air intake pipe is blocked, the plant needs to be shut down for disassembly and cleaning, which results in the interruption of production in the asphalt mixing plant, idle equipment and loss of production capacity. With the design of the rotatable and replaceable connection parts, this device can maintain the air intake operation with one set of connection parts, and the other set can be maintained and cleaned without stopping the plant when it is blocked, which greatly shortens or even eliminates the long shutdown caused by cleaning the filter screen, ensures the stable and continuous output of the mixing plant, improves the overall production efficiency, and meets the needs of large-scale and uninterrupted production. At the same time, the filter screen in the connecting pipe connected to the air intake pipe is cleaned in time, avoiding the erosion and wear of the filter screen material caused by long-term accumulation of impurities, as well as the damage caused by air flow impact caused by blockage;

[0015] 2. The blockage of the filter screen in the spray tower often blocks the circulation of the spray liquid, affecting the spray purification effect and the stability of the system operation. The reciprocating vibration dredging mechanism dredges the mesh in real time to maintain smooth filtration and circulation of the spray liquid, ensure that the spray tower is always in good working condition, and continuously and stably play the role of washing, adsorbing and removing harmful components in the exhaust gas, ensuring the continuity of the exhaust gas purification process;

[0016] 3. The connecting ring, sealing airbag, two-way telescopic cylinder and two-way piston cylinder are cleverly integrated to build a set of closely related and coordinated mechanical systems. The functions of each component complement each other. The two-way telescopic cylinder is used as a power driving source to drive the displacement of the connecting ring to realize the switching of the connecting pipe. At the same time, the piston rod is cleverly used to link the two-way piston cylinder and the sealing airbag to complete gas exchange and sealing. During the movement of the connecting ring, the gas is orderly transferred between the sealing airbag and the two-way piston cylinder, which can not only help the connecting ring to move smoothly, but also accurately inflate and fit tightly when the ring is in place, effectively blocking the gaps that may appear at the connection to prevent exhaust gas leakage;

[0017] 4. Use the same power source to drive the conversion of the air intake connection and the vibration and dredging of the filter screen to avoid energy dispersion and waste caused by the parallel operation of multiple power equipment, realize accurate energy allocation and efficient utilization, reduce the overall energy consumption of the device, and achieve considerable energy-saving benefits in long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of an asphalt mixing station exhaust gas purification device proposed by the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 A schematic diagram of the internal structure of a spray tower of an asphalt mixing plant exhaust gas purification device proposed by the present invention;

[0020] Figure 3 A schematic diagram of a replaceable air inlet connection mechanism of a spray tower of an asphalt mixing plant exhaust gas purification device proposed by the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a drive wheel disc and a groove wheel of a spray tower of an asphalt mixing plant exhaust gas purification device proposed by the present invention;

[0022] Figure 5 for Figure 3 A partial enlarged view of the middle part;

[0023] Figure 6 A cross-sectional view of a bidirectional piston cylinder of an asphalt mixing plant exhaust gas purification device proposed by the present invention;

[0024] Figure 7 A schematic diagram of the connection between a replaceable air intake connection mechanism and a reciprocating vibration dredging mechanism of an asphalt mixing plant exhaust gas purification device proposed by the present invention;

[0025] Figure 8 for Figure 7 A partial enlarged view of point B in the middle;

[0026] Fig. 9 The overall structure of an asphalt mixing station exhaust gas purification device proposed by the present invention is shown in FIG. Figure 2.

[0027] Among them, 1. bottom plate, 2. bracket, 21. drive motor, 22. transmission belt, 211. disc, 2111. eccentric rod, 3. spray tower, 31. air inlet pipe, 32. coil, 321. spray head, 33. filter screen, 4. induced draft fan, 41. induced draft pipe, 42. air delivery pipe, 5. replaceable air inlet connection mechanism, 51. drive wheel, 511. convex rod, 52. support plate, 53. groove wheel, 54. center shaft, 55. center plate, 551. two-way telescopic Cylinder, 552, annular movable plate, 56, connecting pipe, 561, connecting ring, 5611, sealing air bag, 562, support block, 5621, two-way piston cylinder, 56211, air hole, 5622, piston rod, 5623, air pipe, 6, reciprocating vibration dredging mechanism, 61, movable fence mesh plate, 611, dredging rod, 7, piston cylinder one, 71, groove rail, 8, piston cylinder two, 81, ventilation pipe, 9, circulation pump, 91, suction pipe, 92, water pipe. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The present invention is further described in detail below in conjunction with the accompanying drawings.

[0030] like Figure 1-Figure 9As shown, an asphalt mixing station exhaust gas purification device provided by the present invention comprises a base plate 1, on which a bracket 2, a spray tower 3 and an induced draft fan 4 are fixedly installed, an air inlet pipe 31 is connected at the bottom end of the side wall of the spray tower 3, and a replaceable air inlet connection mechanism 5 is arranged on the outer wall of the spray tower 3, the top of the spray tower 3 is connected to an induced draft pipe 41, the induced draft pipe 41 is connected to the air inlet of the induced draft fan 4, and the air outlet of the induced draft fan 4 is connected to an air delivery pipe 42, a coil 32 is fixedly installed at the top of the inner part of the spray tower 3, and spray heads 321 are evenly connected under the coil 32, and the spray tower 3 A circulation pump 9 is fixedly installed on the outer wall, and the water inlet of the circulation pump 9 is connected to a pumping pipe 91, which is connected to the bottom of the spray tower 3. The water outlet of the circulation pump 9 is connected to a water pipe 92, which is connected to the coil 32. The circulation pump 9 extracts the filtered spray liquid and transports it to the coil 32 through the water pipe 92. The spray head 321 under the coil 32 sprays the exhaust gas. The interior of the spray tower 3 is detachably installed with a filter screen plate 33. A reciprocating vibration and dredging mechanism 6 is provided in the spray tower 3, which can vibrate and dredge the mesh of the filter screen plate 33.

[0031] The replaceable air intake connecting mechanism 5 includes a connecting pipe 56, an upside-down flip replacement assembly 50 and a two-way sealing assembly 500. The connecting pipe 56 is provided in two groups. The connecting pipe 56 is detachably connected to the air intake pipe 31. The upside-down flip replacement assembly 50 is arranged on the outer wall of the spray tower 3, and the two-way sealing assembly 500 is installed on the connecting pipe 56; the reciprocating vibration dredging mechanism 6 includes a movable fence mesh plate 61 and an eccentrically driven piston cylinder assembly 60. The movable fence mesh plate 61 is movably arranged in the spray tower 3, and the eccentrically driven piston cylinder assembly 60 is installed on the base plate 1.

[0032] The lower flip replacement assembly 50 includes a driving wheel 51, a support plate 52, a groove wheel 53, a central shaft 54, and a central plate 5. The driving wheel 51 is rotatably arranged on the outer wall of the spray tower 3. A convex rod 511 is arranged on the side wall of the driving wheel 51. Two groups of convex rods 511 are arranged. A driving motor 21 is fixedly installed on the bracket 2. The output end transmission sleeve of the driving motor 21 is provided with a transmission belt 22. The transmission belt 22 is connected to the rotating shaft of the driving wheel 51. The support plate 52 is fixedly installed on the outer wall of the spray tower 3. The groove wheel 53 is rotatably arranged on the side wall of the support plate 52. The groove of the groove wheel 53 is matched with the convex rod 511. The central shaft 54 ​​rotates through the support plate 52 is connected to the groove wheel 53, the center plate 55 is fixedly connected to the center shaft 54, and two groups of connecting pipes 56 are fixedly installed at the upper and lower ends of the center plate 55 respectively, wherein the connecting pipe 56 located at the bottom is on the same horizontal line as the intake pipe 31, and the driving wheel 51 rotates. When the two groups of protruding rods 511 on the driving wheel 51 rotate into the groove of the groove wheel 53, the groove wheel 53 is driven to flip 180 degrees. The groove wheel 53 drives the two groups of connecting pipes 56 to be replaced up and down through the center shaft 54 ​​and the center plate 55, and the connecting pipe 56 originally connected to the intake pipe 31 on the same horizontal line is rotated and flipped to the top, and another group of connecting pipes 56 is replaced to be connected to the intake pipe 31.

[0033] A filter screen is provided in the connecting tube 56, and the two-way plugging assembly 500 includes a connecting ring 561, which is slidably sleeved on the two side ports of the connecting tube 56, and a sealing airbag 5611 is fixedly sleeved at the sleeve joint of the connecting ring 561 and the connecting tube 56, and a support block 562 is fixedly provided on the outer wall of the connecting tube 56, and a two-way piston cylinder 5621 is installed on the support block 562, and an air hole 56211 is opened in the middle position of the two-way piston cylinder 5621, and piston rods 5622 are penetrated on both sides of the two-way piston cylinder 5621, and the piston rod 5622 and the connecting ring 561 is fixedly connected, an air passage 5623 is passed through the end of the sealing airbag 5611 and the two-way piston cylinder 5621, a two-way telescopic cylinder 551 is installed on the center plate 55, and the output ends on both sides of the two-way telescopic cylinder 551 are connected to an annular movable plate 552, and the upper and lower sides of the annular movable plate 552 are fixedly connected to the upper and lower corresponding connecting rings 561, and the two-way telescopic cylinder 551 drives the connecting rings 561 at both ends of the connecting pipe 56 to move toward each other, so that the connecting ring 561 connected to the intake pipe 31 is separated, and the connecting ring 561 moves while driving the piston The rod 5622 moves, and the piston rod 5622 drives the piston inside the two-way piston cylinder 5621 to move, so that the gas inside the sealing airbag 5611 circle can enter the two-way piston cylinder 5621 through the air passage 5623, and the gas has a larger activity space, which is also convenient for the movement of the connecting ring 561. Then, after the upper and lower connecting tubes 56 are turned over and the connecting tubes 56 are replaced, the two-way telescopic cylinder 551 drives the connecting rings 561 at both ends of the connecting tube 56 to move toward each other through the annular moving plate 552, and the connecting ring 561 is sleeved on the intake pipe 31. At the same time, the connecting ring 5 The movement of 61 drives the piston rod 5622 to move, and the piston rod 5622 drives the gas in the two-way piston cylinder 5621 to be squeezed into the sealing airbag 5611 circle, thereby sealing the connecting pipe 56 and the intake pipe 31 to ensure the sealing of the connection. The two sets of connecting pipes 56 are replaced and used. When the filter in the connecting pipe 56 in use is blocked and affects the intake efficiency, the connecting pipe 56 can be replaced in the shortest possible time, and then the exhaust gas can be treated immediately, and the replaced filter can be cleaned and maintained, which greatly reduces the shutdown time for cleaning and maintenance and improves the operation efficiency of the device.

[0034] The eccentrically driven piston cylinder assembly 60 includes a piston cylinder 1 7, a piston cylinder 2 8 and a disc 211. The piston cylinder 1 7 is fixedly mounted on the bottom plate 1. The output end of the piston cylinder 1 7 is fixedly provided with a groove rail 71. The disc 211 is connected to the output end of the driving motor 21. An eccentric rod 2111 is provided on the side wall of the disc 211 away from the center of the circle. The eccentric rod 2111 is slidably arranged in the groove rail 71. The piston cylinder 2 8 is fixedly mounted on the bottom plate 1. The output end of the piston cylinder 2 8 moves through the bottom wall of the spray tower 3 and is connected to the movable fence mesh plate 61. The bottom ends of the piston cylinder 2 8 and the piston cylinder 1 7 are connected with a ventilation pipe 81. The movable fence mesh plate 61 is located directly below the filter mesh plate 33. The movable fence mesh plate 61 is evenly provided with dredging rods 611 for dredging. The rod 611 is arranged in a one-to-one correspondence with the mesh holes of the filter screen 33, and a piston cylinder 28 is fixedly arranged on the bottom plate 1. The output end of the piston cylinder 28 moves through the bottom wall of the spray tower 3 and is connected to the movable fence screen 61. The bottom ends of the piston cylinder 28 and the piston cylinder 1 7 are connected with a ventilation pipe 81. The driving motor 21 drives the disc 211 to rotate, and the eccentric rod 2111 on the disc 211 rotates and moves in the groove track 71, and the piston cylinder 1 7 is driven by the groove track 71 to perform piston movement. The piston cylinder 1 7 draws air or exhausts air into the piston cylinder 28 through the ventilation pipe 81 to control the pressure, thereby driving the movable fence screen 61 to move up and down in the spray tower 3 through the output end of the piston cylinder 28, and the dredging rod 611 on the movable fence screen 61 dredges the mesh holes of the filter screen 33 to effectively avoid blockage.

[0035] When in use, the induced draft fan 4 is turned on, and the exhaust gas first passes through the connecting pipe 56. The filter in the connecting pipe 56 filters the large dust impurities in the exhaust gas, and then enters the spray tower 3 through the air inlet pipe 31. The spray head 321 evenly sprays the spray liquid to wash the dust and some soluble pollutants in the exhaust gas. The used spray liquid falls to the bottom of the spray tower 3, and is filtered by the filter plate 33 to remove the dust impurities in the spray liquid. The circulating pump 9 extracts the filtered spray liquid and delivers it to the coil 32 through the water pipe 92. The spray head 321 under the coil 32 sprays the exhaust gas, so that the spray liquid can be recycled, and only needs to be replaced with new spray liquid regularly;

[0036] When the filter screen and the filter screen plate 33 in the connecting pipe 56 are blocked during operation, the two-way telescopic cylinder 551 starts to operate. The two-way telescopic cylinder 551 drives the connecting rings 561 at both ends of the connecting pipe 56 to move toward each other, so that the connecting ring 561 connected to the air inlet pipe 31 is separated. The connecting ring 561 moves while driving the piston rod 5622 to move. The piston rod 5622 drives the piston inside the two-way piston cylinder 5621 to move, so that the air pressure at the inner end of the two-way piston cylinder 5621 is reduced. The piston draws the gas inside the sealing airbag 5611 circle into the two-way piston cylinder 5621 through the air passage pipe 5623. The sealing airbag 5611 will loosen from the connecting pipe 56, facilitating the movement of the connecting ring 561. Then the driving motor 21 is started. The driving motor 21 drives the driving wheel 51 to rotate through the transmission belt 22. When the driving wheel 51 When the two groups of protruding rods 511 on the groove of the groove wheel 53 rotate into the groove of the groove wheel 53, the groove wheel 53 is driven to flip 180 degrees. The groove wheel 53 drives the two groups of connecting pipes 56 to be replaced up and down through the central shaft 54 ​​and the central plate 55. The connecting pipe 56 originally connected to the intake pipe 31 on the same horizontal line is rotated and flipped to the top, and another group of connecting pipes 56 are replaced to be connected to the intake pipe 31. After the connecting pipe 56 is replaced, the two-way telescopic cylinder 551 drives the connecting rings 561 at both ends of the connecting pipe 56 to move back to back through the annular moving plate 552. The connecting ring 561 is sleeved on the intake pipe 31. At the same time, the movement of the connecting ring 561 drives the piston rod 5622 to move. The piston rod 5622 drives the gas in the two-way piston cylinder 5621 to be squeezed into the sealing airbag 5611 circle, so as to block the connecting pipe 56 and the intake pipe 31 to ensure the sealing of the connection. The two groups of connecting pipes 56 are replaced and used;

[0037] When the driving motor 21 is running, the disc 211 is also driven to rotate. The eccentric rod 2111 on the disc 211 rotates and moves in the groove track 71, and the piston cylinder 7 is driven to perform piston movement through the groove track 71. The piston cylinder 7 draws air or discharges air into the piston cylinder 2 8 through the ventilation pipe 81 to control the pressure, thereby driving the movable fence mesh plate 61 to move up and down in the spray tower 3 through the output end of the piston cylinder 2 8. The dredging rod 611 on the movable fence mesh plate 61 dredges the mesh of the filter mesh plate 33. When there are too many dust impurities accumulated on the filter mesh plate 33, the filter mesh plate 33 can be disassembled and replaced to ensure the operating efficiency of the device. The exhaust gas after spraying enters the next purification link through the air duct 42.

[0038] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An asphalt mixing plant exhaust gas purification device, comprising a base plate (1), on which a bracket (2) and an induced draft fan (4) are fixedly mounted, characterized in that: A spray tower (3) is fixedly arranged on the bottom plate (1); an air inlet pipe (31) is connected to the bottom end of the side wall of the spray tower (3); a replaceable air inlet connection mechanism (5) is arranged on the outer side wall of the spray tower (3); a reciprocating vibration dredging mechanism (6) is arranged inside the spray tower (3); the replaceable air inlet connection mechanism (5) comprises a connecting pipe (56), an upside-down flip replacement assembly (50) and a two-way plugging assembly (500); two groups of the connecting pipe (56) are arranged; The connecting pipe (56) is detachably connected to the air inlet pipe (31); the upside-down replacement assembly (50) is arranged on the outer wall of the spray tower (3); and the two-way blocking assembly (500) is installed on the connecting pipe (56); the reciprocating vibration dredging mechanism (6) comprises a movable fence mesh plate (61) and an eccentrically driven piston cylinder assembly (60); the movable fence mesh plate (61) is movably arranged in the spray tower (3); and the eccentrically driven piston cylinder assembly (60) is installed on the bottom plate (1); The upside-down replacement assembly (50) comprises a driving wheel (51) and a groove wheel (53), wherein the driving wheel (51) is rotatably arranged on the outer side wall of the spray tower (3), a convex rod (511) is arranged on the side wall of the driving wheel (51), and two groups of the convex rods (511) are arranged, a support plate (52) is fixedly installed on the outer side wall of the spray tower (3), the groove wheel (53) is rotatably arranged on the side wall of the support plate (52), the groove of the groove wheel (53) is matched with the convex rod (511), a central shaft (54) rotatably penetrates the support plate (52), one end of the central shaft (54) is connected to the groove wheel (53), and the other end of the central shaft (54) is fixedly connected to the central plate (55), and two groups of connecting pipes (56) are respectively fixedly installed at the upper and lower ends of the central plate (55); The bidirectional blocking assembly (500) comprises a connecting ring (561), the connecting ring (561) being slidably sleeved on two side ports of the connecting tube (56), and a sealing airbag (5611) being fixedly sleeved at the sleeve joint between the connecting ring (561) and the connecting tube (56); A driving motor (21) is fixedly mounted on the bracket (2); The eccentrically driven piston cylinder assembly (60) comprises a piston cylinder 1 (7), a piston cylinder 2 (8) and a disc (211); the piston cylinder 1 (7) is fixedly mounted on the bottom plate (1); a groove rail (71) is fixedly arranged at the output end of the piston cylinder 1 (7); the disc (211) is connected to the output end of the driving motor (21); an eccentric rod (2111) is arranged at a position of the side wall of the disc (211) away from the center of the circle; the eccentric rod (2111) is slidably arranged in the groove rail (71); the piston cylinder 2 (8) is fixedly mounted on the bottom plate (1); the output end of the piston cylinder 2 (8) moves through the bottom wall of the spray tower (3) and is connected to the movable fence mesh plate (61); a ventilation pipe (81) is passed through the bottom ends of the piston cylinder 2 (8) and the piston cylinder 1 (7).

2. The asphalt mixing station exhaust gas purification device according to claim 1 is characterized by: A support block (562) is fixedly provided on the outer wall of the connecting tube (56), and a bidirectional piston cylinder (5621) is installed on the support block (562). Piston rods (5622) are passed through both sides of the bidirectional piston cylinder (5621), and the piston rods (5622) are fixedly connected to the connecting ring (561). An air passage (5623) is passed through the ends of the sealing airbag (5611) and the bidirectional piston cylinder (5621). A bidirectional telescopic cylinder (551) is passed through the center plate (55), and both output ends of the bidirectional telescopic cylinder (551) are connected to an annular movable plate (552), and the upper and lower sides of the annular movable plate (552) are fixedly connected to the corresponding upper and lower connecting rings (561).

3. The asphalt mixing station exhaust gas purification device according to claim 2 is characterized by: The top of the spray tower (3) is connected to an induced draft pipe (41), the induced draft pipe (41) is connected to the air inlet of the induced draft fan (4), the air outlet of the induced draft fan (4) is connected to an air supply pipe (42), a coil (32) is fixedly installed at the top of the interior of the spray tower (3), a spray head (321) is evenly connected below the coil (32), and a filter screen (33) is detachably installed inside the spray tower (3).

4. The asphalt mixing station exhaust gas purification device according to claim 3 is characterized by: The output end transmission sleeve of the driving motor (21) is provided with a transmission belt (22), and the transmission belt (22) is drivingly connected to the rotating shaft of the driving wheel disc (51).

5. The asphalt mixing station exhaust gas purification device according to claim 4 is characterized by: The movable fence mesh plate (61) is located directly below the filter mesh plate (33), and dredging rods (611) are evenly arranged on the movable fence mesh plate (61), and the dredging rods (611) are arranged in a one-to-one correspondence with the mesh holes of the filter mesh plate (33).

6. The asphalt mixing station exhaust gas purification device according to claim 5 is characterized by: A circulation pump (9) is fixedly mounted on the outer wall of the spray tower (3); a water inlet of the circulation pump (9) is connected to a water pumping pipe (91), the water pumping pipe (91) is connected to the bottom of the spray tower (3); a water outlet of the circulation pump (9) is connected to a water delivery pipe (92), the water delivery pipe (92) is connected to the coil (32).

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