EXHAUST GAS EMISSION CIRCULATION FILTERING DEVICE FOR AIR POLLUTION PREVENTION
The exhaust gas emission circulation filtering device addresses the challenge of high-temperature damage in existing systems by utilizing a conveyor-driven filter net for a two-step purification circulation, effectively filtering exhaust gases and improving air quality.
Patent Information
- Application Number
- FR2023004578
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2023-05-09
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2043-05-09
AI Technical Summary
Current exhaust gas emission control systems, particularly those used in waste combustion processes, face challenges due to high temperatures damaging water spraying systems, leading to inefficient air pollution control and climate change contributions.
A filtering device comprising an exhaust pipe, air exhaust devices, a conveyor system with a two-story rotation loop, a filter net, a tank washing device, and a cleaning device, which moves the filter net through a back-and-forth purification circulation to filter and clean exhaust gases effectively.
The device achieves a two-step purification circulation, effectively filtering harmful substances and odors from exhaust gases while withstanding high temperatures, thereby improving air quality and reducing climate change impacts.
Smart Images
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Abstract
Description
Title of the invention: EXHAUST GAS EMISSION CIRCULATION FILTERING APPARATUS FOR PREVENTING AIR POLLUTION
[0001] The present invention relates to an exhaust gas emission circulation filtering apparatus for preventing air pollution.
[0002] Nowadays, waste gases and black smoke generated during a process Waste combustion plants not only release pollutants into the air, but also release a large amount of carbon dioxide, which leads to climate change and serious air pollution. Air pollution is a global problem and has almost seriously affected the health of the human body. To improve exhaust emissions, sprinkler equipment is usually installed on the chimney to absorb dirt by spraying atomized liquid, so as to reduce the damage caused to the environment by black smoke. However, the temperature of the chimney is too high, so the water spray system installed on the chimney is easily damaged due to the high temperature.
[0003] The present invention relates to a filtering apparatus comprising: an exhaust pipe, multiple air exhaust devices, a conveyor, a filtering net, a tank washing device and a cleaning device. The exhaust pipe comprises multiple air outlets. The air exhaust devices are mounted on the exhaust pipe and located outside the air outlets. The air exhaust devices are respectively aligned with the air outlets. The conveyor comprises a first distribution circuit extending in a horizontal axial direction and a second distribution circuit extending in a vertical longitudinal direction. The first distribution circuit extends through the air outlets. The second distribution circuit connects to the first distribution circuit. The first distribution circuit and the second distribution circuit form a two-stage rotation loop.The filter net extends through the first supply circuit and the second supply circuit and is movable in a reciprocating motion in the two-stage rotation loop of the first distribution circuit and the second distribution circuit. The tank washing device is arranged in the second distribution circuit and comprises a liquid reservoir. The cleaning device is mounted in the tank washing device and comprises multiple rolling shafts. Each of the rolling shafts has multiple brushes. The conveyor is electrically connected to an external power supply. The conveyor is configured to be powered by an external power supply to drive the filter mesh. The filter mesh is configured to be driven by the conveyor and move along the conveyor's two-stage rotating loop in a reciprocating motion. When the filter mesh moves through the first distribution circuit and passes through the air outlets, it performs a filtration process. When the filter mesh moves through the second distribution circuit, it performs a cleaning process and is washed and cleaned by the tank washing unit and the cleaning unit.The filter net is configured to be moved between the first distribution circuit and the second distribution circuit to perform a two-stage purification circulation in a reciprocating motion so as to discharge a purified gas from the air exhaust devices.
[0004] According to a particular characteristic of the invention, the first distribution circuit and the second distribution circuit are perpendicular to each other.
[0005] According to a particular characteristic of the invention, the conveyor comprises multiple rollers pressing the filtering net.
[0006] According to a particular characteristic of the invention, the filtering net is made of a composite fabric with one or more layers.
[0007] According to a particular feature of the invention, the filtering net is made of activated carbon or of a high-efficiency HEPA (acronym for "high-efficiency particulate air") screen filter.
[0008] According to a particular feature of the invention, the filter net is a wet filter net.
[0009] According to a particular feature of the invention, the air exhaust devices have a number corresponding to that of the air outlets of the exhaust pipe.
[0010] According to a particular feature of the invention, the tank washing device further comprises multiple dust collection containers mounted removably on the bottom of the liquid tank.
[0011] According to a particular feature of the invention, the filtering device further comprises: an anti-deviation device comprising multiple positioning seats and multiple positioning clips; wherein: each of the positioning seats has a C-shaped slot; the positioning seats are mounted on two sides of each of the first distribution circuit and the second distribution circuit; the positioning clips are mounted on two sides of the filter mesh and are respectively aligned with the positioning seats; and each of the positioning clips is configured to move with the filter mesh and is permitted to pass through the C-shaped slot of one of the seats. positioning.
[0012] In the drawings:
[0013] [Fig-1] is a block diagram of a filtering apparatus according to the present invention.
[0014] [Fig.2] is a top view of the filtering device according to the present invention.
[0015] [Fig.3] is a side view of the filtering apparatus according to the present invention.
[0016] [Fig.4] is a schematic functional view of the filtering device illustrated in the [Fig.3],
[0017] [Fig.5] is another schematic functional view of the applied filtering device to a burner.
[0018] [Fig.6] is a schematic view showing a filter net driven by a conveyor.
[0019] [Fig.7] is a schematic view showing an anti-deviation device.
[0020] [Fig.8] is a locally enlarged view of [Fig.6].
[0021] [Fig.9] is a locally enlarged sectional view of [Fig.6].
[0022] [Fig. 10] is a locally enlarged top view of [Fig.6].
[0023] [Fig. 11] is a locally enlarged perspective view of [Fig.6].
[0024] Referring to the drawings and initially to Figures 1-6, a filtering apparatus 100 according to the preferred embodiment of the present invention comprises an exhaust pipe 10, multiple air exhaust devices 20, a conveyor 30, a filtering (or screening) net 40, a tank washing device 50 and a cleaning device 60.
[0025] The exhaust pipe 10 comprises multiple air outlets 11. The air exhaust devices 20 are mounted on the exhaust pipe 10 and located outside the air outlets 11. The air exhaust devices 20 are respectively aligned with the air outlets 11. The conveyor 30 comprises a first distribution circuit 31 extending in a horizontal axial direction and a second distribution circuit 32 extending in a vertical longitudinal direction. The first distribution circuit 31 extends through the air outlets 11. The second distribution circuit 32 connects to the first distribution circuit 31. The first distribution circuit 31 and the second distribution circuit 32 form a two-stage rotation loop.The filter net 40 extends through the first distribution circuit 31 and the second distribution circuit 32 and is movable in a reciprocating motion in the two-stage rotation loop of the first distribution circuit 31 and the second distribution circuit 32. The tank washing device 50 is arranged in the second distribution circuit 32 and comprises a liquid reservoir 51 which contains an alkaline washing liquid. The cleaning device 60 is mounted in the liquid reservoir 51 of the tank washing device 50 and comprises multiple . rolling shafts 61 arranged at an interval. Each of the rolling shafts 61 has multiple brushes 62 which are used for washing and cleaning the filter net 40.
[0026] In the preferred embodiment of the present invention, the first distribution circuit 31 and the second distribution circuit 32 are perpendicular to each other.
[0027] In the preferred embodiment of the present invention, the conveyor 30 comprises multiple rollers (or rollers) 301 which press the filter mesh 40. The rollers 301 are arranged in the first distribution circuit 31 and the second distribution circuit 32 and rotate simultaneously to move the filter mesh 40.
[0028] In the preferred embodiment of the present invention, the filtering net 40 is made of a composite fabric in one or more layers.
[0029] In the preferred embodiment of the present invention, the filter mesh 40 is made of activated carbon or of a high-efficiency HEPA screen filter.
[0030] In the preferred embodiment of the present invention, the filter net 40 is a wet filter net. Thus, water molecules adhere to the filter net 40 by surface tension to form a water film layer on the filter net 40 such that the filter net 40 forms an insulating layer to isolate suspended fine particles (such as PM2.5) and to prevent the spread of odors.
[0031] In the preferred embodiment of the present invention, the air exhaust devices 20 have a number corresponding to that of the air outlets 11 of the exhaust pipe 10.
[0032] In the preferred embodiment of the present invention, the washing device with a tank 50 further comprises multiple dust collection containers (or tubes or canisters or cylinders) 52 removably mounted on the bottom of the liquid tank 51, and multiple movable orifices 53 mounted between the liquid tank 51 and one of the dust collection containers 52. The dirt contained in the liquid tank 51 is discharged through the movable orifices 53 into the dust collection containers 52. Each of the dust collection containers 52 can be removed from the liquid tank 51 for maintenance purposes.
[0033] In the preferred embodiment of the present invention, the second distribution circuit 32 passes through the liquid reservoir 51 of the tank washing device 50 and the cleaning device 60.
[0034] In the preferred embodiment of the present invention, the tank washing device 50 is arranged below the air outlets 11 of the exhaust pipe 10.
[0035] In the preferred embodiment of the present invention, the air outlets 11 are located on a peripheral wall of the exhaust pipe 10. The exhaust pipe 10 has an interior having a hollow channel and has a bottom connected to an air inlet of a burner to deliver burnt gases evacuated from the burner.
[0036] In the preferred embodiment of the present invention, each of the air exhaust devices 20 is a centrifugal fan which rotates to produce an air force or a suction force so as to evacuate the purified gas from the exhaust pipe 10.
[0037] In the preferred embodiment of the present invention, the first distribution circuit 31 is in the same horizontal axial direction as that of the air outlets 11.
[0038] In the preferred embodiment of the present invention, each of the rollers 301 has a ratchet surface A that engages the filter net 40 to provide an auxiliary tensile force to the filter net 40.
[0039] In the preferred embodiment of the present invention, the filter net 40 is an elongated strip which surrounds the first distribution circuit 31 and the second distribution circuit 32.
[0040] In the preferred embodiment of the present invention, when the filter net 40 is moved into the first distribution circuit 31 and passes through the air outlets 11, the filter net 40 performs a filtering process X1 to filter the exhaust gas discharged from the air outlets 11 of the exhaust pipe 10, and to adhere to harmful substances contained in the exhaust gas, such as microparticles, powder dust, suspended particles or the like. The purified gas is sucked out from the air exhaust devices 20. Furthermore, when the filter net 40 is moved into the second distribution circuit 32, the filter net 40 is washed and cleaned by the tank washing device 50 and the cleaning device 60 to perform a cleaning process X2.At this point, the filter mesh 40 is wet and contains water molecules that adhere to it due to surface tension, reducing its sieving density. This allows the filter mesh 40 to filter micromolecules. Simultaneously, a water film forms on the filter mesh 40 and adheres to it, creating an insulating layer that traps harmful substances and odors. After cleaning, the filter mesh 40 is routed to the first distribution circuit 31. There, it performs a filtration process XI to filter the exhaust gases exiting the air outlets 11 of the exhaust pipe 10, and is then routed to the second distribution circuit 32 for a cleaning process X2.In this way, the filter net 40 is moved between the first distribution circuit 31 and the second distribution circuit 32 to realize a two-stage purification circulation in a reciprocating motion and to discharge a purified gas from the air exhaust devices 20.
[0041] In practice, referring to Figures 4 and 5 with reference to Figures 1 to 3, the conveyor 30 is electrically connected to an external power supply 80. The conveyor 30 is operated by the external power supply 80 to drive the filter net 40. The filter net 40 is driven by the conveyor 30 and surrounds and moves along the two-stage rotation loop of the first distribution circuit 31 and the second distribution circuit 32 of the conveyor 30 in a reciprocating motion. When the filter net 40 is moved in the first distribution circuit 31 and passes through the air outlets 11, the filter net 40 retains air particles, impurities and powder dust.When the filter net 40 is moved into the second distribution circuit 32, the filter net 40 is washed and cleaned by the tank washing device 50 and the cleaning device 60, so that the filter net 40 is wet and contains water molecules which adhere to the filter net 40 by surface tension to reduce a screening density of the filter net 40 so that the filter net 40 is used for filtering micromolecules. At the same time, a water film layer is formed on the filter net 40 and adheres thereto, so that the filter net 40 forms an insulating layer to stick harmful substances and adhere odors.Thus, the filter net 40 is moved in the first distribution circuit 31 to carry out a filtering process XI and is moved in the second distribution circuit 32 to carry out a cleaning process X2, such that the filter net 40 is moved between the first distribution circuit 31 and the second distribution circuit 32 as illustrated in [Fig.4] to carry out a two-stage purification circulation in a back-and-forth movement to evacuate a purified gas from the air exhaust devices 20 as illustrated in [Fig.5].
[0042] With reference to Figures 6 to 11 in reference to Figures 1 to 5, the filtering device 100 further comprises an anti-deflection device 70 comprising multiple positioning seats 71 and multiple positioning clips 72. The positioning seats 71 are mounted parallel to each other on two sides of each of the first distribution circuit 31 and the second distribution circuit 32. Each of the positioning seats 71 has a C-shaped slot 711. The positioning clips 72 are mounted on two sides of the filter mesh 40 and are respectively aligned with the positioning seats 71. Each of the positioning clips 72 is a C-shaped clip or fastener. Each of the positioning clips 72 moves with the filter mesh 40 and can pass through the C-shaped slot 711 of one of the positioning seats 71.The distance between two of the positioning clips 72 is equal to that between the C-shaped slots 711 of two of the positioning seats 71. Thus, the anti-deviation device 70 is used to calibrate and maintain the transport trajectory of the filter net 40 so as to prevent the filter net 40 from being deflected or moved aside during the distribution process.
[0043] Accordingly, the filter net 40 is moved in the first distribution circuit 31 to carry out a filtering process XI and is moved in the second distribution circuit 32 to carry out a cleaning process X2, such that the filter net 40 is moved between the first distribution circuit 31 and the second distribution circuit 32 to carry out a two-stage exhaust gas purification circulation in a back-and-forth movement to evacuate purified gas from the air exhaust devices 20, thus improving the exhaust gas purification effect.
Claims
Claims
1. A filtering apparatus (100), characterized by comprising: an exhaust pipe (10), multiple air exhaust devices (20), a conveyor (30), a filtering net (40), a tank washing device (50) and a cleaning device (60); in which: the exhaust pipe (10) comprises multiple air outlets (11); the air exhaust devices (20) are mounted on the exhaust pipe (10) and located outside the air outlets (11); the air exhaust devices (20) are respectively aligned with the air outlets (11); the conveyor (30) comprises a first distribution circuit (31) extending in a horizontal axial direction and a second distribution circuit (32) extending in a vertical longitudinal direction; the first distribution circuit (31) extends through the air outlets (11); the second distribution circuit (32) connects to the first distribution circuit (31); the first distribution circuit (31) and the second distribution circuit (32) form a two-stage rotation loop; the filter net (40) extends through the first distribution circuit (31) and the second distribution circuit (32) and is movable in a reciprocating motion in the two-stage rotation loop of the first distribution circuit (31) and the second distribution circuit (32); the tank washing device (50) is arranged in the second distribution circuit (32) and comprises a liquid tank (51); the cleaning device (60) is mounted in the tank washing device (50) and comprises multiple rolling shafts (61); each of the rolling shafts (61) comprises multiple brushes (62); the conveyor (30) is electrically connected to an external power supply (80); the conveyor (30) is configured to be operated by the external power supply (80) to drive the filter net (40); the filter net (40) is configured to be driven by the conveyor (30) and move along the two-stage rotation loop of the conveyor (30) in a reciprocating motion; when the filter net (40) is moved in the first distribution circuit (31) and passes through the air outlets (11), the filter net (40) is configured to perform a filtering process; when the filter net (40) is moved in the second distribution circuit (32), the filter net (40) is configured to perform a cleaning process and is washed and cleaned by the tank washing device and the cleaning device; and the filter net (40) is configured to be moved between the first distribution circuit (31) and the second distribution circuit (32) to perform a two-stage purification circulation in a reciprocating motion so as to discharge a purified gas from the air exhaust devices (20).
2. Filtering apparatus (100) according to claim 1, characterized in that the first distribution circuit (31) and the second distribution circuit (32) are perpendicular to each other.
3. A filtering apparatus (100) according to claim 1, characterized in that the conveyor (30) comprises multiple rollers (301) pressing the filtering net (40).
4. Filtering apparatus (100) according to claim 1, characterized in that the filtering net (40) is made of a single-layer or multi-layer composite fabric.
5. Filtering apparatus (100) according to claim 3, characterized in that the filtering net (40) is made of an activated carbon or a high efficiency HEPA screen filter.
6. Filtering apparatus (100) according to claim 3, characterized in that the filtering net (40) is a wet filtering net.
7. Filtering apparatus (100) according to claim 1, characterized in that the air exhaust devices (20) have a number corresponding to that of the air outlets (11) of the exhaust pipe (10).
8. A filtering apparatus (100) according to claim 1, characterized in that the tank washing device (50) further comprises multiple dust collection containers (52) removably mounted on the bottom of the liquid tank (51).
9. A filtering apparatus (100) according to claim 1, characterized in that it further comprises: an anti-deflection device (70) comprising multiple positioning seats (71) and multiple positioning clips (72); wherein: each of the positioning seats (71) has a C-shaped slot (711); the positioning seats (71) are mounted on two sides of each of the first distribution circuit (31) and the second distribution circuit (32); the positioning clips (72) are mounted on two sides of the filter net (40) and are respectively aligned with the positioning seats (71); and each of the positioning clips (72) is configured to be moved with the filter net (40) and is allowed to pass through the C-shaped slot (711) of one of the positioning seats (71).