Asphalt concrete production flue filtering device

Abstract

The utility model relates to the technical field of asphalt concrete production, disclose a flue filter device for asphalt concrete production, including flue, the lower half section port of flue is into the smoke end, and install flue gas cooling assembly on the lateral wall, and the upper half section of flue is installed respectively with filter core filter assembly, and spray dust fall component is installed in filter core filter assembly front side, the upper lateral wall of flue is equipped with screw thread mounting seat, and the inside of screw thread mounting seat is installed with sealing cover plate through screw thread, and spray dust fall component rotates and passes sealing cover plate, filter core filter assembly includes filter core and U shape sealing frame, and filter core inserts inside flue, and U shape sealing frame is sealedly connected with flue outer wall. The utility model has the advantages compared with prior art: through flue gas cooling assembly to flue gas cooling, protect flue, through spray dust fall component and filter core filter assembly carry out double filtration, improve filter core filter assembly's life, spray dust fall component and filter core filter assembly are convenient for dismounting and maintain.

Description

Technical Field

[0001] This utility model relates to the field of asphalt concrete production technology, specifically to a flue gas filtration device for asphalt concrete production. Background Technology

[0002] Asphalt concrete is a common road surface material, widely used in the construction of roads and sites such as parking lots and airport runways. The production process of asphalt concrete generates a large amount of smoke and dust, which is directly released into the air and causes air pollution. Current technology incorporates honeycomb activated carbon into the flue to filter the smoke and dust before emission.

[0003] Existing flue gas filtration devices typically use a combination of filter screens and adsorption cartridges for flue gas filtration. While they have good flue gas adsorption capacity, flue gas tends to accumulate on the front side of the filter screen and the inside of the adsorption cartridge. The filter screen and adsorption cartridge are installed inside the flue, making them inconvenient to disassemble and clean, which affects the flue gas exhaust rate. In addition, existing flue gas filtration devices do not have a flue gas cooling structure, and high-temperature flue gas can easily cause thermal expansion, deformation, and cracking of the flue.

[0004] To address the aforementioned technical problems, this application proposes a flue gas filtration device for asphalt concrete production. Utility Model Content

[0005] I. Technical problems to be solved

[0006] The technical problem this invention aims to solve is that dust easily accumulates on the front side of the screen and the inside of the adsorption filter element. The screen and adsorption filter element are installed inside the flue, making them inconvenient to disassemble and clean. The flue filtration device does not have a flue gas cooling structure.

[0007] II. Technical Solution

[0008] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a flue filtration device for asphalt concrete production, including a flue, the flue being assembled from a bent pipe and multiple sets of straight pipes, the flue being an inverted L-shape, the lower half of the flue being the inlet end, and a flue gas cooling component being installed on the side wall, through which cold air is sent into the flue, and mixed with the flue gas for cooling;

[0009] The upper half of the flue is equipped with a dust suppression spray assembly and a filter cartridge assembly, with the dust suppression spray assembly installed in front of the filter cartridge assembly.

[0010] The upper sidewall of the flue is provided with a threaded mounting seat, and a sealing cover plate is installed inside the threaded mounting seat by threads. The dust suppression spray assembly rotates through the sealing cover plate, and a drive assembly that drives the dust suppression spray assembly to rotate is installed on the upper side of the sealing cover plate.

[0011] The filter element assembly includes a filter element and a U-shaped sealing frame. The filter element is installed inside the U-shaped sealing frame and inserted into the inside of the flue. The U-shaped sealing frame is sealed to the outer wall of the flue.

[0012] As an improvement, the flue gas cooling component includes a diffuser duct and multiple sets of exhaust ducts. The diffuser duct is installed on the outside of the flue, and the multiple sets of exhaust ducts are installed on the inside of the flue and connected to the diffuser duct respectively. The exhaust duct is provided with multiple sets of exhaust ports, and one end of the diffuser duct is connected to an air supply duct.

[0013] As an improvement, the dust suppression spray assembly includes a rotating pipe and multiple sets of spray pipes. The rotating pipe rotates through a sealing cover plate, and the multiple sets of spray pipes are installed on the outside of the rotating pipe and communicate with the rotating pipe. Multiple sets of atomizing nozzles are installed on the spray pipes, and a water supply pipe is rotatably connected to the upper end of the rotating pipe.

[0014] As an improvement, the drive assembly includes a first gear and a second gear. The first gear is mounted on the outer side of the rotating tube located above the sealing cover plate. A motor is mounted on the upper side of the sealing cover plate. The second gear is mounted on the motor shaft end and meshes with the first gear.

[0015] As an improvement, a water collection assembly is installed at the bottom of the upper half of the flue. The water collection assembly is located below the spray dust suppression assembly. The water collection assembly includes two sets of lower side baffles and a water collection tank. The two sets of lower side baffles are respectively installed at the bottom of the upper half of the flue and located on both sides of the spray dust suppression assembly. The water collection tank is located below the upper half of the flue and between the two sets of lower side baffles. The water collection tank is connected to the bottom of the upper half of the flue through a water collection hopper. A drain pipe is installed at the bottom of the water collection tank, and a control valve is installed on the drain pipe.

[0016] As an improvement, the height of the front set of lower baffles is lower than the height of the other set of lower baffles. A guide plate is installed on the top of the upper half of the flue. The guide plate is located between the two sets of lower baffles and in front of the spray dust suppression assembly.

[0017] III. Beneficial Effects

[0018] The advantages of this utility model compared with the prior art are as follows: The flue is equipped with a flue gas cooling component, a spray dust suppression component, and a filter element filtration component. The flue gas cooling component protects the flue and prevents it from cracking due to thermal expansion. The spray dust suppression component and the filter element filtration component provide dual filtration. The spray dust suppression component captures some of the dust in the flue gas and collects it in a water collection component, while the filter element filtration component further filters the dust-suppressed flue gas, thus improving the service life of the filter element filtration component. Both the spray dust suppression component and the filter element filtration component are installed inside the flue through the side wall, facilitating disassembly and maintenance, and improving the flue exhaust rate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the upper structure of a flue gas filtration device for asphalt concrete production according to this utility model.

[0020] Figure 2 This is a schematic diagram of the lower structure of a flue gas filtration device for asphalt concrete production according to this utility model.

[0021] Figure 3 This is a schematic diagram of the inner structure of a flue gas filtration device for asphalt concrete production according to this utility model.

[0022] Figure 4 This is a schematic diagram of the upper side structure of the sealing cover plate of a flue filter device for asphalt concrete production according to this utility model.

[0023] Figure 5 This is a schematic diagram of the lower side structure of the sealing cover plate of a flue gas filtration device for asphalt concrete production according to this utility model.

[0024] As shown in the figure: 1. Flue; 2. Diffuser duct; 3. Supply duct; 4. Exhaust duct; 5. Exhaust outlet; 6. Lower baffle; 7. Guide plate; 8. Threaded mounting base; 9. Sealing cover plate; 10. Rotating pipe; 11. Water supply pipe; 12. Gear 1; 13. Motor; 14. Gear 2; 15. Spray pipe; 16. Atomizing nozzle; 17. Water collection hopper; 18. Water collection tank; 19. Drain pipe; 20. Control valve; 21. Filter element; 22. U-shaped sealing frame. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] As attached Figure 1 and attached Figure 3As shown, a flue gas filtration device for asphalt concrete production includes a flue 1, which is assembled from a bend and multiple sets of straight pipes. The flue 1 is an inverted L-shape. The lower half of the flue 1 is the inlet end, and a flue gas cooling component is installed on the side wall. The flue gas cooling component includes a diffuser 2 and multiple sets of exhaust ducts 4. The diffuser 2 is installed on the outside of the flue 1, and the multiple sets of exhaust ducts 4 are installed on the inside of the flue 1 and connected to the diffuser 2 respectively. The exhaust ducts 4 are provided with multiple sets of exhaust ports 5. One end of the diffuser 2 is connected to an air supply duct 3, which is connected to an external air cooler. Air is supplied to the diffuser 2 through the air supply duct 3, and the cold air is dispersed into the multiple sets of exhaust ducts 4 through the diffuser 2. The cold air is then discharged into the flue 1 through the multiple sets of exhaust ports 5, where it mixes with the flue gas for cooling.

[0028] The upper half of the flue 1 is equipped with a dust suppression spray assembly and a filter cartridge assembly. The dust suppression spray assembly is installed in front of the filter cartridge assembly. In this article, "front" refers to the side closest to the smoke inlet.

[0029] As attached Figure 1 Appendix Figure 4 and attached Figure 5 As shown, the upper sidewall of the flue 1 is provided with a threaded mounting seat 8. A sealing cover plate 9 is installed inside the threaded mounting seat 8 by threads. A sealing gasket is provided between the bottom of the sealing cover plate 9 and the inner side of the threaded mounting seat 8 to ensure the sealing effect. The dust suppression spray assembly includes a rotating pipe 10 and multiple sets of spray pipes 15. The rotating pipe 10 rotates through the sealing cover plate 9. A sealing gasket is provided between the rotating pipe 10 and the sealing cover plate 9 to ensure the sealing effect. Multiple sets of spray pipes 15 are installed on the outside of the rotating pipe 10 and are connected to the rotating pipe 10. Multiple sets of atomizing nozzles 16 are installed on the spray pipes 15. A water supply pipe 11 is rotatably connected to the upper end of the rotating pipe 10. A sealing gasket is built into the connection between the rotating pipe 10 and the water supply pipe 11 to ensure the sealing effect. The water supply pipe 11 is connected to a water supply device. Water is supplied to the inside of the rotating pipe 10 through the water supply pipe 11. The rotating pipe 10 delivers water to the multiple sets of spray pipes 15, and the multiple sets of atomizing nozzles 16 on the spray pipes 15 spray the water out to suppress dust in the flue gas.

[0030] To improve the dust suppression effect on flue gas, as shown in the attached document... Figure 4 As shown, a drive assembly for rotating the spray dust suppression component is installed on the upper side of the sealing cover plate 9. The drive assembly includes a first gear 12 and a second gear 14. The first gear 12 is installed on the outer side of the rotating tube 10 located above the sealing cover plate 9. A motor 13 is installed on the upper side of the sealing cover plate 9. The second gear 14 is installed on the shaft end of the motor 13 and meshes with the first gear 12. When the motor 13 is started, the second gear 14 is driven to rotate. The second gear 14 drives the first gear 12 and the rotating tube 10 to rotate, so that water mist is evenly sprayed out inside the flue 1, thereby improving the dust suppression effect on the flue gas.

[0031] As attached Figure 3 As shown, the filter assembly includes a filter element 21 and a U-shaped sealing frame 22. The filter element 21 is installed inside the U-shaped sealing frame 22 and inserted into the inside of the flue 1. After dust reduction, a small amount of dust is still retained inside the flue gas. The activated carbon in the multi-channels inside the filter element 21 adsorbs the dust particles and odors, further improving the filtration effect. A sealing gasket is provided between the inner wall of the U-shaped sealing frame 22 and the outer wall of the flue 1 for sealing connection. The U-shaped sealing frame 22 is connected to the flue 1 by bolts. After the bolts are removed, the filter element 21 can be taken out for replacement.

[0032] Example 2

[0033] Based on Example 1, in order to collect and treat dustfall wastewater, as shown in the attached... Figure 2 and attached Figure 3 As shown, a water collection assembly is installed at the bottom of the upper half of the flue 1. The water collection assembly is located below the dust suppression spray assembly. The water collection assembly includes two sets of lower side baffles 6 and a water collection tank 18. The two sets of lower side baffles 6 are respectively installed at the bottom of the upper half of the flue 1 and are located on both sides of the dust suppression spray assembly to block and collect the dust suppression water mist. The inner walls of the two sets of lower side baffles 6 and the inner wall of the flue 1 between the two sets of lower side baffles 6 are coated with an anti-corrosion coating to prevent water and corrosive substances in the water from corroding the lower side baffles 6 and the inner wall of the flue 1. The water collection tank 18 is located on the upper half of the flue 1. Located below the lower half of the flue 1 and between two sets of lower side baffles 6, the water collection tank 18 is connected to the bottom of the upper half of the flue 1 via a water collection hopper 17. The dust-suppressing water mist falls to the bottom of the upper half of the flue 1 and collects in the water collection hopper 17, and is then discharged from the water collection hopper 17 into the water collection tank 18 for collection. A drain pipe 19 is installed at the bottom of the water collection tank 18, and a control valve 20 is installed on the drain pipe 19. A water level viewing window is provided on the side wall of the water collection tank 18. When the collected water volume is large, the control valve 20 is opened, and the wastewater in the water collection tank 18 is discharged through the drain pipe 19 for treatment.

[0034] The height of the front set of lower baffles 6 is lower than that of the other set of lower baffles 6. A guide plate 7 is installed on the top of the upper half of the flue 1. The guide plate 7 is located between the two sets of lower baffles 6 and in front of the spray dust suppression component. The flue gas flows through the front set of lower baffles 6 and the guide plate 7 to the bottom of the upper half of the flue 1, and then flows to the rear side through the upper side of the rear set of lower baffles 6, so that the flue gas flows around the spray dust suppression component, which can improve the spray dust suppression effect.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A flue gas filtration device for asphalt concrete production, comprising a flue (1), wherein the flue (1) is assembled from a bend and multiple sets of straight pipes, and the flue (1) is an inverted L-shape, characterized in that: The lower half of the flue (1) is the inlet end, and a flue gas cooling component is installed on the side wall. Cold air is sent into the flue (1) through the flue gas cooling component and mixed with the flue gas for cooling. The upper half of the flue (1) is respectively equipped with a spray dust suppression component and a filter element filtration component, and the spray dust suppression component is installed in front of the filter element filtration component; The upper side wall of the flue (1) is provided with a threaded mounting seat (8), and a sealing cover plate (9) is installed inside the threaded mounting seat (8) by threads. The dust suppression spray assembly rotates through the sealing cover plate (9), and a drive assembly that drives the dust suppression spray assembly to rotate is installed on the upper side of the sealing cover plate (9). The filter element assembly includes a filter element (21) and a U-shaped sealing frame (22). The filter element (21) is installed inside the U-shaped sealing frame (22) and inserted into the inside of the flue (1). The U-shaped sealing frame (22) is sealed to the outer wall of the flue (1).

2. The flue gas filtration device for asphalt concrete production according to claim 1, characterized in that: The flue gas cooling component includes a diffuser pipe (2) and multiple sets of exhaust pipes (4). The diffuser pipe (2) is installed on the outside of the flue (1), and the multiple sets of exhaust pipes (4) are installed on the inside of the flue (1) and connected to the diffuser pipe (2) respectively. The exhaust pipe (4) is provided with multiple sets of exhaust ports (5), and one end of the diffuser pipe (2) is connected to an air supply pipe (3).

3. The flue gas filtration device for asphalt concrete production according to claim 1, characterized in that: The dust suppression spray assembly includes a rotating pipe (10) and multiple sets of spray pipes (15). The rotating pipe (10) rotates through a sealing cover plate (9). Multiple sets of spray pipes (15) are installed on the outside of the rotating pipe (10) and communicate with the rotating pipe (10). Multiple sets of atomizing nozzles (16) are installed on the spray pipes (15). A water supply pipe (11) is rotatably connected to the upper end of the rotating pipe (10).

4. The flue gas filtration device for asphalt concrete production according to claim 2, characterized in that: The drive assembly includes a first gear (12) and a second gear (14). The first gear (12) is installed on the outer side of the rotating tube (10) above the sealing cover plate (9). A motor (13) is installed on the upper side of the sealing cover plate (9). The second gear (14) is installed on the shaft end of the motor (13) and meshes with the first gear (12).

5. A flue gas filtration device for asphalt concrete production according to claim 2, characterized in that: A water collection assembly is installed at the bottom of the upper half of the flue (1). The water collection assembly is located below the spray dust suppression assembly. The water collection assembly includes two sets of lower side baffles (6) and a water collection tank (18). The two sets of lower side baffles (6) are respectively installed at the bottom of the upper half of the flue (1) and located on both sides of the spray dust suppression assembly. The water collection tank (18) is located below the upper half of the flue (1) and between the two sets of lower side baffles (6). The water collection tank (18) is connected to the bottom of the upper half of the flue (1) through a water collection bucket (17). A drain pipe (19) is installed at the bottom of the water collection tank (18), and a control valve (20) is installed on the drain pipe (19).

6. A flue gas filtration device for asphalt concrete production according to claim 5, characterized in that: The height of the lower baffle (6) on the front side is lower than that of the other lower baffle (6). A guide plate (7) is installed on the top of the upper half of the flue (1). The guide plate (7) is located between the two lower baffles (6) and in front of the spray dust suppression assembly.

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