Gas filtering device

Abstract

The utility model discloses a gas filtering device. The gas filtering device comprises a filtering bottle, a gas inlet and outlet component and a dispersing component, the filter bottle is provided with a containing cavity for containing absorption liquid; the air inlet and outlet component comprises an air inlet and outlet connector and an air inlet pipe, the air inlet pipe is provided with an outlet communicated with the containing cavity, and the outlet is suitable for being immersed in the absorption liquid; the dispersing component is arranged in the filter bottle and comprises a plurality of layers of dispersing plates which are arranged at intervals in the vertical direction, and at least part of the dispersing plates are suitable for being immersed in the absorption liquid. According to the gas filtering device disclosed by the embodiment of the utility model, the outlet of the gas inlet pipe is immersed in the absorption liquid, so that the dissolving amount of a set substance in the gas can be increased, and the gas can be filtered more sufficiently; the gas filtering device comprises the multiple layers of dispersion plates which are arranged at intervals in the vertical direction, so that gas can be blocked by the dispersion plates in the process of being discharged in the absorption liquid and floating upwards, the length of a gas advancing path is prolonged, the gas dissolution rate of the absorption liquid is increased, and gas filtering is more sufficient.

Description

Technical Field

[0001] The utility model relates to the technical field of gas processing, in particular to a gas filtering device. Background Art

[0002] In related art, gas is passed through a gas filtration device containing a dissolving liquid, causing harmful substances in the gas to dissolve in the dissolving liquid, thereby achieving gas filtration or purification. However, these gas filtration devices in related art are not very effective in filtering gas and are unable to fully filter out harmful substances in the gas. Therefore, there is room for improvement. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a gas filtering device, which increases the contact area between the gas and the absorption liquid by immersing the outlet of the air inlet pipe in the absorption liquid, so that the gas is more fully dissolved in the absorption liquid, and the solubility of the set substance in the gas is increased, so that the gas is filtered more fully; by making the gas filtering device include a dispersion component, the dispersion component includes a plurality of dispersion plates arranged at intervals in the vertical direction, and at least part of the dispersion plates are immersed in the absorption liquid, so that the gas is blocked by the dispersion plates during the process of being discharged and floating in the absorption liquid, thereby extending the length of the gas's travel path, thereby increasing the solubility rate of the absorption liquid for the gas, thereby increasing the solubility of the set substance in the gas, and making the gas filtered more fully.

[0004] 18. The smoke filter apparatus of claim 17, wherein the smoke filter comprises a nozzle, a nozzle, and a nozzle. The nozzle is connected to the nozzle on a top side of the smoke filter. The nozzle is connected to the nozzle on a bottom side of the smoke filter. The nozzle is connected to the nozzle on a top side of the smoke filter. The nozzle is connected to the nozzle on a bottom side of the smoke filter.

[0005] According to the gas filtering device of the embodiment of the present invention, by immersing the outlet of the air inlet pipe in the absorption liquid, the contact area between the gas and the absorption liquid can be increased, so that the gas is more fully dissolved in the absorption liquid, the solubility of the set substance in the gas can be increased, and the gas is filtered more fully; by making the gas filtering device include a dispersion component, the dispersion component includes a plurality of dispersion plates arranged at intervals in the upper and lower directions, and at least part of the dispersion plates are immersed in the absorption liquid, the gas can be blocked by the dispersion plates in the process of being discharged and floating in the absorption liquid, thereby extending the length of the gas's travel path, thereby increasing the solubility rate of the absorption liquid for the gas, thereby increasing the solubility of the set substance in the gas, and making the gas filtered more fully.

[0006] According to some embodiments of the present invention, the outlet is lower than the lowest dispersion plate.

[0007] According to some embodiments of the present invention, the air intake pipe extends in an up-down direction, and the outlet is formed on a bottom surface of the air intake pipe.

[0008] According to some embodiments of the present invention, the dispersion plate located at the top is lower than the liquid level of the absorption liquid, and the distance between the dispersion plate located at the top and the liquid level of the absorption liquid is in the range of 3mm-5mm; and / or, the distance between two adjacent layers of the dispersion plates is in the range of 10mm-15mm.

[0009] According to some embodiments of the present invention, two adjacent layers of the dispersion plates are connected via a first connecting member.

[0010] According to some embodiments of the present invention, the upper and lower ends of the first connecting member are respectively threadedly connected or clamped to the dispersion plate.

[0011] According to some embodiments of the present invention, the dispersion component further includes a condensation plate, which is located above the multiple layers of the dispersion plates and is suitable for being located above the liquid level of the absorption liquid.

[0012] According to some embodiments of the present invention, a plurality of through holes arranged at intervals are formed on the condensation plate, and the through holes penetrate the condensation plate in an up-down direction.

[0013] According to some embodiments of the present invention, the distance between the condensation plate and the liquid surface of the absorption liquid ranges from 13 mm to 15 mm.

[0014] According to some embodiments of the present invention, the condensation plate and the uppermost dispersion plate are connected via a second connector; upper and lower ends of the second connector are respectively threaded or clamped to the condensation plate and the dispersion plate.

[0015] According to some embodiments of the present invention, the dispersion component is connected to the air intake pipe.

[0016] According to some embodiments of the present invention, a first mounting hole is provided on the dispersion plate, and the air intake pipe is passed through the first mounting hole.

[0017] According to some embodiments of the present invention, the first mounting hole is a notch formed on an edge of the dispersion plate.

[0018] According to some embodiments of the present invention, the dispersion component and / or the air intake pipe are plastic parts.

[0019] According to some embodiments of the present invention, the filter bottle is further formed with a liquid replenishment and discharge port, which is located at the bottom of the filter bottle, and a valve for opening and closing the liquid replenishment and discharge port is provided at the liquid replenishment and discharge port; and / or, the gas filtration device also includes a liquid level sensor, which is used to detect the liquid level height of the absorption liquid in the filter bottle.

[0020] According to some embodiments of the present invention, the air inlet pipes are multiple and spaced apart; and / or the air inlet is higher than the air outlet.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic diagram of a gas filtering device according to some embodiments of the present invention;

[0024] Figure 2 yes Figure 1 Assembly drawing of the inlet and outlet components and dispersion components of the gas filtration device;

[0025] Figure 3 yes Figure 2 Assembly drawing of the air inlet and outlet components and the dispersion components from another angle;

[0026] Figure 4 yes Figure 2 Schematic diagram of the condenser plate.

[0027] Reference numerals:

[0028] 100. Gas filtering device;

[0029] 10. Filter bottle; 11. Installation port; 12. Liquid replenishment and drainage port; 13. Valve;

[0030] 20. Air inlet and outlet components; 21. Air inlet and outlet joints; 32. Air inlet; 33. Air outlet; 22. Air inlet pipe; 23. Outlet;

[0031] 24. Dispersing member; 25. Dispersing plate; 26. First connecting member; 27. Condensation plate; 28. Through hole; 29. ​​Second connecting member; 30. First mounting hole; 31. Second mounting hole; 34. Cutting edge; 35. Flow opening;

[0032] 40. Liquid level sensor. DETAILED DESCRIPTION

[0033] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0034] Reference below Figure 1-Figure 4 A gas filtering device 100 according to an embodiment of the present invention is described.

[0035] According to the gas filtering device 100 of the embodiment of the present invention, Figure 1-Figure 3 , including: a filter bottle 10, an air inlet and outlet component 20 and a dispersion component 24.

[0036] The filter bottle 10 has a chamber for accommodating an absorption liquid, which is used to absorb a desired substance in the gas. The top of the filter bottle 10 has an installation opening 11. Installation opening 11 can be used to install other components, such as the gas inlet and outlet components 20. For example, the gas filtration device 100 is an exhaust gas filter bottle 10 of a boron diffusion device. The absorption liquid is water. Since the exhaust gas subjected to boron diffusion typically includes boron chloride and chlorine gas, which can constitute the desired substance, using water as the absorption liquid allows the water to absorb and dissolve the boron chloride and chlorine gas in the exhaust gas, thereby filtering and purifying the exhaust gas.

[0037] For example, the gas filtration device 100 is a tail gas filter bottle 10 of a boron diffusion device, and the absorption liquid is water. Since the tail gas of boron diffusion generally includes boron chloride and chlorine gases, the gases react with water to form solid boron oxide, which is deposited at the bottom of the filter bottle 10. By locating the liquid replenishment and drainage port 12 at the bottom of the filter bottle 10, personnel can discharge the solid boron oxide during the absorption liquid discharge process, preventing solid accumulation and blockage that may affect the filtering effect of the gas filtration device 100.

[0038] The air inlet and outlet component 20 includes an air inlet and outlet connector 21 and an air inlet pipe 22. The air inlet and outlet connector 21 has an air inlet 32 ​​and an air outlet 33. The air inlet pipe 22 is connected to the bottom of the air inlet and outlet connector 21 and communicates with the air inlet 32. The air inlet and outlet connector 21 is installed on the top of the filter bottle 10 and covers the mounting opening 11. The air inlet pipe 22 is located in the accommodating chamber to transport gas into the accommodating chamber. The air inlet pipe 22 has an outlet 23 that communicates with the accommodating chamber. The outlet 23 is suitable for being immersed in the absorption liquid, and the air outlet 33 communicates with the accommodating chamber. By installing the air inlet and outlet connector 21 on the top of the filter bottle 10 and having the air inlet and outlet connector 21 cover the mounting opening 11, the filter bottle 10 can be fully sealed to prevent some exhaust gas that has not been filtered or does not meet emission requirements from escaping from the top of the filter bottle 10 and causing pollution. By providing the air inlet pipe 22 with an outlet 23 connected to the accommodating cavity and immersing the outlet 23 in the absorption liquid, the contact area between the gas entering the filter bottle 10 and the absorption liquid can be increased, so that the soluble impurities in the filter bottle 10 can be fully absorbed and dissolved by the absorption liquid, thereby improving the filtering effect of the gas filter device 100.

[0039] The dispersion component 24 is disposed within the filter bottle 10 and includes multiple layers of dispersion plates 25 spaced apart in the vertical direction. At least some of the dispersion plates 25 are suitable for immersion in the absorption liquid, for example, all of the dispersion plates 25 are suitable for immersion in the absorption liquid. A flow passage 35 is defined between the outer peripheral wall of the dispersion plate 25 and the inner peripheral wall of the filter bottle 10, and the flow passages 35 corresponding to adjacent dispersion plates 25 are staggered. Multiple layers of dispersion plates 25 mean that the dispersion component 24 includes multiple dispersion plates 25, and the multiple dispersion plates 25 are spaced apart in the vertical direction. For example, the cross-section of the filter bottle 10 is circular, and the outer peripheral wall of each dispersion plate 25 includes a cut edge 34 extending in a straight line. The cut edge 34 of the dispersion plate 25 defines the aforementioned flow passage 35 between the cut edge 34 and the inner peripheral wall of the filter bottle 10, and the cut edges 34 of two adjacent dispersion plates 25 are staggered. By arranging a dispersion component 24 in the filter bottle 10, and the dispersion component 24 includes a plurality of dispersion plates 25 spaced apart in the up-down direction, the gas entering the absorption liquid can be moved step by step along the axial and radial direction of the filter bottle 10 between the plurality of dispersion plates 25 in the process of moving from bottom to top, with the axial direction being the up-down direction, thereby extending the flow path of the gas in the absorption liquid and increasing the contact time between the gas and the absorption liquid, so that the absorption liquid can more fully absorb the soluble impurities in the dissolved gas, thereby making the filtering effect of the gas filter device 100 better.

[0040] For example, the flow openings 35 on the dispersion plate 25 are located at the edge of the dispersion plate 25, and the flow openings 35 between two adjacent dispersion plates 25 are located on both radial sides of the dispersion plate 25, thereby maximizing the flow path of the gas in the absorption liquid and increasing the contact time between the gas and the absorption liquid, so that the dispersion component 24 can more significantly improve the filtering effect of the gas filtering device 100.

[0041] For example, the outer peripheral wall of each dispersion plate 25 includes a straight-line cut edge 34. The cut edges 34 between two adjacent dispersion plates 25 are located on both radial sides of the dispersion plates 25. The cut edges 34 of the dispersion plates 25 and the inner peripheral wall of the filter bottle 10 define the aforementioned flow opening 35. By locating the cut edges 34 between two adjacent dispersion plates 25 on both radial sides of the dispersion plates 25, the flow path of the gas in the absorption liquid can be maximized, increasing the contact time between the gas and the absorption liquid, and thus the dispersion component 24 can significantly enhance the filtration effect of the gas filtration device 100.

[0042] For example, the gas inlet and outlet component 20 includes an outlet pipe, one end of which is connected to the accommodating chamber and the other end is connected to a vacuum pump. The vacuum pump extracts the gas that has been filtered and purified by the absorption liquid out of the gas filtration device 100. The provision of the dispersion component 24 improves the gas filtration effect, reduces the risk of clogging the pipe and vacuum pump, prolongs the maintenance cycle, and reduces production costs. According to the gas filtering device 100 of the embodiment of the present invention, by immersing the outlet 23 of the air inlet pipe 22 in the absorption liquid, the contact area between the gas and the absorption liquid can be increased, so that the gas is more fully dissolved in the absorption liquid, the solubility of the set substance in the gas can be increased, and the gas is filtered more fully; by making the gas filtering device 100 include a dispersion component 24, the dispersion component 24 includes a plurality of dispersion plates 25 arranged at intervals in the upper and lower directions, and at least part of the dispersion plates 25 is immersed in the absorption liquid, the gas can be blocked and guided by the dispersion plates 25 during the process of being discharged and floating in the absorption liquid, thereby extending the length of the gas's travel path, thereby increasing the solubility rate of the absorption liquid for the gas, thereby increasing the solubility of the set substance in the gas in the absorption liquid, and making the gas filtered more fully.

[0043] According to some embodiments of the present invention, Figure 2 and Figure 3 The outlet 23 is lower than the lowest dispersion plate 25. By making the outlet 23 lower than the lowest dispersion plate 25, the air inlet pipe 22 can guide the gas to a layer below the air guide plate before entering the bottle, further increasing the gas-liquid contact area, thereby increasing the amount of the set substance in the gas dissolved in the absorption liquid, and allowing the dispersion component 24 to more fully enhance the filtering effect of the gas filter device 100.

[0044] According to some embodiments of the present invention, Figure 2 and Figure 3The inlet pipe 22 extends in the vertical direction, and an outlet 23 is formed on the bottom surface of the inlet pipe 22. By extending the inlet pipe 22 in the vertical direction and forming the outlet 23 on the bottom surface of the inlet pipe 22, the flow path of the gas in the filter bottle 10 can be increased, and the contact time between the gas and the absorption liquid can be increased, so that the target substances in the gas are fully absorbed by the absorption liquid, and the filtering effect of the gas filter device 100 is enhanced. In addition, the gas can be passed into the filter bottle 10 from top to bottom, and the size of the gas filter device 100 in the left and right direction can be reduced, making it easier to install the gas filter device 100 in a smaller space.

[0045] Optionally, the air inlet and outlet component 20 includes two air outlet pipes, the air inlet pipe 22 extends in the up and down directions, and the two air outlet pipes are respectively located on the left and right sides of the filter bottle 10. By making the air inlet and outlet component 20 include two air outlet pipes, the amount of air outlet can be increased and the circulation speed of the gas in the gas filter device 100 can be improved.

[0046] According to some embodiments of the present invention, the topmost dispersion plate 25 is lower than the liquid level of the absorption liquid. By making the topmost dispersion plate 25 lower than the liquid level of the absorption liquid, all dispersion plates 25 can achieve the effect of increasing the movement path of the gas in the solution, thereby increasing the amount of the predetermined substance in the gas dissolved in the absorption liquid, and allowing the dispersion component 24 to further enhance the filtering effect of the gas filter device 100.

[0047] The distance b between the topmost dispersion plate 25 and the liquid surface of the absorption liquid is 3 mm to 5 mm. For example, the value of b can be 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, etc. Since the floating of gas will cause the liquid surface to fluctuate, by ensuring that the distance b between the topmost dispersion plate 25 and the liquid surface of the absorption liquid is not less than 3 mm, it can be ensured that the liquid surface completely submerges the topmost dispersion plate 25, so that the dispersion plate 25 can further enhance the filtering effect of the gas filtering device 100. By ensuring that the distance b between the topmost dispersion plate 25 and the liquid surface of the absorption liquid is not greater than 5 mm, it can be prevented that the liquid surface is too high and contacts the condensation plate 27, thereby reducing the effect of the condensation plate 27.

[0048] According to some embodiments of the present invention, Figure 3, the spacing between two adjacent layers of dispersion plates 25 is a, and the value range of a is 10mm-15mm. For example, the spacing a between two adjacent layers of dispersion plates 25 can be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, etc. By making the spacing a between two adjacent layers of dispersion plates 25 not less than 10mm, there can be enough space between the two adjacent layers of dispersion plates 25 for the gas to flow through; by making the spacing a between two adjacent layers of dispersion plates 25 not greater than 15mm, it can be avoided that the dispersion plates 25 occupy too much space, resulting in the gas filtration device 100 occupying too much space as a whole. For example, each layer is fixed by one or more double-headed internal threaded studs and screws, and the material of the double-headed internal threaded studs and screws is PP or PTFE, wherein the height of the double-headed internal threaded studs can be between 10-15mm. By adjusting the height of the double-headed internal threaded studs, the spacing between the dispersion plates 25 can be adjusted, thereby regulating the solubility of the absorption liquid to adapt to gases containing different concentrations of set substances discharged from different processes.

[0049] According to some embodiments of the present invention, Figure 2 and Figure 3 The two adjacent layers of dispersion plates 25 are connected by a first connecting member 26. By connecting the two adjacent layers of dispersion plates 25 by the first connecting member 26, the two adjacent layers of dispersion plates 25 can be relatively fixed to prevent the dispersion plates 25 from falling off in the gas filtering device 100.

[0050] According to some embodiments of the present invention, Figure 2 and Figure 3 The upper and lower ends of the first connecting member 26 are respectively threadedly connected or clamped with the dispersion plate 25. By making the upper and lower ends of the first connecting member 26 respectively threadedly connected or clamped with the dispersion plate 25, the connection between the two adjacent dispersion plates 25 can be more complete.

[0051] According to some embodiments of the present invention, Figure 2 and Figure 3 The dispersion component 24 further includes a condensation plate 27, which is located above the multi-layer dispersion plates 25 and is adapted to be positioned above the absorption liquid level. By including the condensation plate 27 in the dispersion component 24 and positioning the condensation plate 27 above the multi-layer dispersion plates 25 and above the absorption liquid level, the absorption liquid in the exhaust gas can be condensed and dripped back into the absorption liquid for recovery. Furthermore, the water content in the exhaust gas can be reduced, preventing the exhaust gas from carrying a large amount of absorption liquid and causing corrosion to subsequent pipelines.

[0052] According to some embodiments of the present invention, Figure 4Condensation plate 27 is formed with a plurality of spaced-apart through-holes 28 extending vertically through condensation plate 27. Providing multiple through-holes 28 on condensation plate 27 increases the contact area between condensation plate 27 and exhaust gas, thereby improving condensation recovery efficiency. By extending through-holes 28 vertically through condensation plate 27, gas can flow through through-holes 28 and exit filter bottle 10, preventing gas blockage.

[0053] According to some embodiments of the present invention, the distance between the condensation plate 27 and the liquid surface of the absorption liquid is c, and the value range of c is 13mm-15mm. For example, the value of c can be 13mm, 13.5mm, 14mm, 14.5mm, 15mm, etc. Since the floating of gas will cause the liquid surface to fluctuate, by making the distance c between the condensation plate 27 and the liquid surface of the absorption liquid no less than 13mm, the condensation plate 27 can be located above the liquid surface of the absorption liquid, so that the absorption liquid in the exhaust gas can be condensed and dripped back into the absorption liquid for recovery; by making the distance c between the condensation plate 27 and the liquid surface of the absorption liquid no more than 15mm, it can be avoided that the distance between the condensation plate 27 and the liquid surface in the vertical direction is too large, resulting in the gas filtration device 100 occupying too much space as a whole.

[0054] According to some embodiments of the present invention, Figure 2 and Figure 3 The condenser plate 27 is connected to the topmost dispersion plate 25 via a second connector 29. The upper and lower ends of the second connector 29 are respectively threaded or snap-fitted to the condenser plate 27 and the dispersion plate 25. Connecting the condenser plate 27 and the topmost dispersion plate 25 via the second connector 29 ensures a sufficient connection between the condenser plate 27 and the dispersion plate 25. By threading or snap-fitting the upper and lower ends of the second connector 29 to the condenser plate 27 and the dispersion plate 25, the condenser plate 27 and the dispersion plate 25 are relatively fixed, preventing the dispersion plate 25 from falling off within the gas filter device 100.

[0055] According to some embodiments of the present invention, Figure 2 and Figure 3 The dispersion component 24 is connected to the air intake pipe 22. By connecting the dispersion component 24 to the air intake pipe 22, the dispersion component 24 can be directly fixed on the air intake pipe 22, so that the air intake pipe 22 serves as the center of the dispersion component 24, eliminating the need to set an additional bracket for the dispersion component 24 and occupying additional space.

[0056] According to some embodiments of the present invention, Figure 2 and Figure 3The dispersion plate 25 is provided with a first mounting hole 30, and the intake pipe 22 is passed through the first mounting hole 30. By providing the first mounting hole 30 on the dispersion plate 25 and passing the intake pipe 22 through the first mounting hole 30, the fixation between the dispersion plate 25 and the intake pipe 22 can be more sufficient.

[0057] In some embodiments, reference Figure 3 and Figure 4 When the dispersion member 24 includes the condensation plate 27, the condensation plate 27 is provided with a second mounting hole 31, and the air intake pipe 22 is passed through the second mounting hole 31. By passing the air intake pipe 22 through the second mounting hole 31, the air intake pipe 22 and the condensation plate 27 can be more fully fixed.

[0058] According to some embodiments of the present invention, Figure 2 and Figure 3 The first mounting hole 30 is a notch formed at the edge of the dispersion plate 25. By forming the first mounting hole 30 at the edge of the dispersion plate 25, the dispersion plate 25 and the intake pipe 22 can be more conveniently installed.

[0059] According to some embodiments of the present invention, the dispersion member 24 is a plastic member. For example, the dispersion member 24 can be made of polypropylene (PP) or polytetrafluoroethylene (PTFE). Using a plastic dispersion member 24 simplifies the manufacturing process of the intake pipe 22 and reduces costs. Furthermore, the corrosion resistance of PP and PTFE increases the lifespan of the dispersion member 24.

[0060] According to some embodiments of the present invention, the air intake pipe 22 is a plastic component. For example, the air intake pipe 22 can be made of polypropylene (PP) or polytetrafluoroethylene (PTFE). This plastic component simplifies the manufacturing process and reduces costs. Furthermore, the corrosion resistance of PP and PTFE increases the lifespan of the air intake pipe 22.

[0061] According to some embodiments of the present invention, Figure 1 The filter bottle 10 also includes a liquid replenishment and drainage port 12 located at the bottom of the filter bottle 10. A valve 13 for opening and closing the liquid replenishment port is provided at the liquid replenishment and drainage port 12. When the absorption liquid reaches saturation with the target substance in the gas, the absorption liquid no longer fully absorbs the target substance in the gas or no longer absorbs the target substance in the gas. At this point, the filtration and purification effect of the gas filtration device 100 is reduced. By including the liquid replenishment and drainage port 12 in the filter bottle 10, relevant personnel can use the liquid replenishment and drainage port 12 to regularly replace the absorption liquid in the filter bottle 10, thereby maintaining the filtration effect of the gas filtration device 100.

[0062] According to some embodiments of the present invention, Figure 1The gas filtration device 100 further includes a liquid level sensor 40 for detecting the liquid level of the absorption liquid in the filter bottle 10. By including the liquid level sensor 40 in the gas filtration device 100, the liquid level of the absorption liquid in the filter bottle 10 can be determined by the liquid level sensor 40 during the refilling process. This allows for more convenient control of the liquid level so that it submerges the topmost dispersion plate 25 and remains below the condensation plate 27, ensuring that the dispersion plate 25 sufficiently prolongs the contact time between the gas and the absorption liquid, and that the condensation plate 27 sufficiently condenses the absorption liquid and recycles it into the filter bottle 10.

[0063] For example, the liquid level sensor 40 can be infrared, ultrasonic, capacitive, etc. When the liquid level sensor 40 is fixedly installed, the detection surface of the liquid level sensor 40 can be attached to the outer wall of the filter bottle 10, or the liquid level sensor 40 can be screwed into the bottle through a thread.

[0064] According to some embodiments of the present invention, Figure 2 and Figure 3 The air inlet pipes 22 are multiple and spaced apart. "Multiple" means two or more. For example, there can be two air inlet pipes 22. By having multiple air inlet pipes 22, the size of individual bubbles can be reduced while maintaining a constant intake gas flux. This increases the contact area between the gas and the absorption liquid, allowing the absorption liquid to more fully absorb and dissolve soluble impurities in the gas, thereby improving the filtration effect of the gas filtration device 100.

[0065] According to some embodiments of the present invention, Figure 1 The air inlet 32 ​​is higher than the air outlet 33. By making the air inlet 32 ​​higher than the air outlet 33, the gas filtration device 100 can be shortened in the left-right direction, making it easier to integrate with other equipment. For example, the gas filtration device 100 is a tail gas filter bottle 10 of a boron diffusion device. The space in which the tail gas filter bottle 10 is stored in the boron diffusion device is narrow in the left-right direction but ample in the vertical direction. By making the air inlet 32 ​​higher than the air outlet 33, the gas filtration device 100 can be more easily integrated into the boron diffusion device.

[0066] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0067] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0068] In the description of the present invention, “plurality” means two or more.

[0069] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact via another feature therebetween.

[0070] In the description of the present invention, a first feature “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0071] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0072] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A gas filtering device, characterized in that: include: The filter bottle has a receiving cavity for receiving an absorption liquid, wherein the absorption liquid is used to absorb a predetermined substance in the gas, and the top of the filter bottle has a mounting port; An air inlet and outlet component, comprising an air inlet and outlet joint and an air inlet pipe, the air inlet and outlet joint having an air inlet and an air outlet, the air inlet pipe being connected below the air inlet and outlet joint and communicating with the air inlet, the air inlet and outlet joint being mounted on the top of the filter bottle and sealing the mounting port, the air inlet pipe being located in the accommodating cavity to transport gas into the accommodating cavity, the air inlet pipe having an outlet communicating with the accommodating cavity, the outlet being suitable for being immersed in the absorption liquid, and the air outlet being communicated with the accommodating cavity; A dispersion component is arranged in the filter bottle and includes a plurality of dispersion plates spaced apart in the up and down directions, at least part of the dispersion plates are suitable for being immersed in the absorption liquid, and a flow passage is defined between the outer peripheral wall of the dispersion plate and the inner peripheral wall of the filter bottle, and the flow passages corresponding to adjacent dispersion plates are staggered.

2. The gas filtering device according to claim 1, characterized in that The outlet is lower than the dispersion plate located at the lowest position.

3. The gas filtering device according to claim 2, characterized in that: The air intake pipe extends in an up-down direction, and the outlet is formed on a bottom surface of the air intake pipe.

4. The gas filtering device according to claim 1, characterized in that The topmost dispersion plate is lower than the liquid level of the absorption liquid, and the distance between the topmost dispersion plate and the liquid level of the absorption liquid is 3mm-5mm; and / or the distance between two adjacent layers of dispersion plates is 10mm-15mm.

5. The gas filtering device according to claim 1, characterized in that Two adjacent layers of the dispersion plates are connected via a first connecting member.

6. The gas filtering device according to claim 5, characterized in that: The upper and lower ends of the first connecting member are respectively threadedly connected or clamped to the dispersion plate.

7. The gas filtering device according to claim 1, characterized in that: The dispersion component further includes a condensation plate, which is located above the plurality of dispersion plates and is suitable for being located above the liquid level of the absorption liquid.

8. The gas filtering device according to claim 7, characterized in that: A plurality of through holes are formed on the condensation plate and are arranged at intervals. The through holes penetrate the condensation plate in an up-down direction.

9. The gas filtering device according to claim 7, characterized in that: The distance between the condensation plate and the liquid surface of the absorption liquid ranges from 13 mm to 15 mm.

10. The gas filtering device according to claim 7, characterized in that: The condensation plate is connected to the uppermost dispersion plate via a second connector; upper and lower ends of the second connector are respectively threaded or clamped with the condensation plate and the dispersion plate.

11. The gas filtering device according to claim 1, characterized in that: The dispersion component is connected to the air intake pipe.

12. The gas filtering device according to claim 11, characterized in that: The dispersion plate is provided with a first mounting hole, and the air intake pipe is passed through the first mounting hole.

13. The gas filtering device according to claim 12, characterized in that: The first mounting hole is a notch formed on the edge of the dispersion plate.

14. The gas filtering device according to claim 1, wherein: The dispersion component and / or the air intake pipe are plastic parts.

15. The gas filtering device according to claim 1, wherein The filter bottle is also formed with a liquid replenishment and discharge port, which is located at the bottom of the filter bottle, and a valve for opening and closing the liquid replenishment and discharge port is provided at the liquid replenishment and discharge port; and / or the gas filtering device also includes a liquid level sensor, which is used to detect the liquid level height of the absorption liquid in the filter bottle.

16. The gas filtering device according to any one of claims 1 to 15, characterized in that: There are a plurality of air inlet pipes arranged at intervals; and / or the air inlet is higher than the air outlet.

Images