A laboratory exhaust treatment device with activated carbon recycling

Abstract

The present application relates to tail gas treatment technical field, specifically to a kind of activated carbon recycling's laboratory tail gas treatment device, it includes fixed frame, processing cylinder and scroll cylinder, laboratory tail gas treatment, fixed frame is installed at tail gas discharge, processing cylinder is rotatably arranged on fixed frame, and it is divided into three isolated processing cavities inside;Fixed frame is set adsorption, desorption, drying station, each processing cavity is equipped with scroll cylinder, and its scroll channel is filled with activated carbon;Scroll cylinder is in adsorption station, waste gas flows from the center of scroll channel to the outside;Desorption station is desorbed using steam;Drying station is centrifuged dehydration first, then heated and dried.Processing cylinder rotates, processing cavities pass three stations one by one, when the efficiency of activated carbon in certain processing cavity decreases, replace desorbed and dried processing cylinder, to ensure processing efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tail gas treatment, and particularly relates to a laboratory tail gas treatment device with activated carbon recycling. BACKGROUND

[0002] Laboratory tail gas often contains organic pollutants, and the activated carbon adsorption method has become the mainstream treatment method due to its high efficiency and convenient operation. In order to reduce the cost of activated carbon consumption, the activated carbon needs to be recycled through the process of "adsorption-vapor desorption-drying", and the existing tail gas treatment device generally adopts the way of layered loading according to particle size to ensure that the tail gas and the activated carbon are fully contacted to improve the adsorption effect. Large particle activated carbon is selected near the tail gas inlet, and small particle activated carbon is used near the gas outlet. Although this design meets the requirement of step-by-step filtration, it leads to a significantly higher loading density of activated carbon near the gas outlet. In the vapor desorption stage, the vapor is easy to condense into water droplets after contacting with the activated carbon, and the gap between the activated carbon with high density loading is small, so that the condensed water is difficult to discharge smoothly. The residual condensed water can damage the pore structure of the activated carbon and reduce its adsorption capacity, which seriously affects the recycling efficiency and service life.

[0003] At the same time, the existing tail gas treatment device mostly adopts a tower type layout, and the gas inlet is arranged at the bottom and the gas outlet is arranged at the upper part. Although this structure is suitable for the layered loading logic, it has obvious defects in the desorption and drying stages. The layered activated carbon will form a large flow resistance to the vapor and drying gas, which not only greatly prolongs the processing time of desorption and drying, but also consumes more energy to drive the gas flow, resulting in energy waste. SUMMARY

[0004] The present application provides a laboratory tail gas treatment device with activated carbon recycling to solve the problems of low processing efficiency and high energy consumption caused by the loading structure and layout design of the existing tail gas treatment device.

[0005] The laboratory tail gas treatment device with activated carbon recycling provided by the present application adopts the following technical scheme:

[0006] A laboratory tail gas treatment device with activated carbon recycling comprises a fixing frame, a treatment cylinder and a vortex cylinder.

[0007] The processing cylinder is rotationally arranged on the fixed frame, and has three mutually isolated processing cavities inside. The fixed frame is provided with an adsorption station, a desorption station and a drying station. When the processing cylinder rotates on the fixed frame, one of the processing cavities passes through the adsorption station, the desorption station and the drying station one by one. The vortex cylinder is provided with three, and each vortex cylinder is arranged in one of the processing cavities. The vortex cylinder has a vortex channel, and the vortex channel is filled with activated carbon. The diameter of activated carbon particles near the center of the vortex channel is larger than that of activated carbon particles far from the center of the vortex channel. When the vortex cylinder is in the processing cavity at the adsorption station, waste gas can flow from the center of the vortex channel to the position far from the center. When the vortex cylinder is in the processing cavity at the desorption station, steam can desorb the activated carbon inside the vortex channel. When the vortex cylinder is in the processing cavity at the drying station, the first drying procedure and the second drying procedure are performed on the activated carbon inside the vortex channel step by step. The first drying procedure is centrifugal dehydration, and the second drying procedure is heating drying.

[0008] Further, the fixed frame is fixedly provided with a first fixed ring, a second fixed ring and a third fixed ring, which are coaxially and spaced apart rotationally arranged outside the processing cylinder. The first fixed ring is provided with a first supply pipe and a second supply pipe, the second fixed ring is provided with an exhaust pipe, and the third fixed ring is provided with a first discharge pipe and a second discharge pipe. Each of the processing cavities is provided with two partitions, which divide the processing cavity into an upper chamber, a middle chamber and a lower chamber, and the vortex cylinder is arranged in the middle chamber. The partition between each middle chamber and the upper chamber is provided with a first communication channel, and the partition between each middle chamber and the lower chamber is provided with a second communication channel. When the processing cavity is at the adsorption station, the exhaust pipe communicates with the middle chamber. When the processing cavity is at the desorption station, the first supply pipe communicates with the upper chamber, and the first discharge pipe communicates with the lower chamber. When the processing cavity is at the drying station, the second supply pipe communicates with the upper chamber, and the second discharge pipe communicates with the lower chamber.

[0009] Further, the fixed frame is fixedly provided with a fixed disc, and the fixed disc is fixedly provided with a gas supply pipe. A gas guide pipe is arranged at the center line position of each vortex channel, penetrates the partition between the middle chamber and the lower chamber, and penetrates the lower end surface of the processing cylinder. The surface of the gas guide pipe in the middle chamber is provided with a plurality of through holes, and the lower end of the gas guide pipe abuts against the fixed disc. When the processing cavity is at the adsorption station, the gas guide pipe communicates with the gas supply pipe.

[0010] Further, the vortex cylinder side wall is internally hollow, the chamber of the vortex cylinder side wall interior is a flow cavity, the first communication channel is a communication hole, and the communication hole is in communication with the flow cavity; the vortex cylinder has an inner surface and an outer surface, the inner surface is a surface close to the center of the vortex channel, and the outer surface is a surface away from the center of the vortex channel; a plurality of air permeable holes are arranged on the inner surface, and the air permeable holes are in communication with the vortex channel and the flow cavity; a plurality of baffles are arranged in the flow cavity, and a one-way valve is arranged on each baffle, and the conduction direction of the one-way valve is from a position away from the center of the vortex channel to a position close to the center of the vortex channel.

[0011] Further, the vortex channel is internally provided with a plurality of spoilers, and each spoiler is fixedly connected with a baffle.

[0012] Further, the second communication channel comprises a first channel and a second channel, the first channel is used to communicate the middle chamber with the lower chamber when the processing cavity is in the drying station and the first drying program is performed on the activated carbon in the vortex channel interior, and the second channel is used to communicate the middle chamber with the lower chamber when the processing cavity is in the drying station and the second drying program is performed on the activated carbon in the vortex channel interior.

[0013] Further, the first channel comprises an adjusting disc and a plurality of sliding tubes, the adjusting disc slides through the partition plate between the middle chamber and the lower chamber, a plurality of sliding tubes are fixedly arranged on the adjusting disc, the side wall of the sliding tube is provided with a plurality of internally and externally penetrating drainage holes, the upper end of the sliding tube can enter the flow cavity, and a plurality of sliding tubes are uniformly distributed in the flow cavity; when the adjusting disc slides up and down, the drainage holes can be blocked or unblocked by the partition plate; when the processing cavity is in the drying station and the first drying program is performed on the activated carbon in the vortex channel interior, the drainage holes and the sliding tubes communicate the flow cavity with the lower chamber.

[0014] Further, the second channel comprises a plurality of fixed tubes and a plurality of adjusting tubes, a plurality of fixed tubes are fixedly arranged in the middle chamber, a plurality of fixed tubes are uniformly distributed along the outer surface, the lower end of the fixed tube penetrates the adjusting disc, and the surface of the fixed tube is provided with a plurality of first air exhaust holes; each adjusting tube is slidingly inserted into the interior of a fixed tube, the surface of the adjusting tube is provided with a plurality of second air exhaust holes, and the lower end of the adjusting tube is fixedly connected to the adjusting disc; when the processing cavity is in the drying station and the second drying program is performed on the activated carbon in the vortex channel interior, the first air exhaust holes and the second air exhaust holes are in communication, and the drainage holes are blocked by the partition plate.

[0015] Further, the surface of the fixed disc is provided with an adjusting groove and an adjusting protrusion, the adjusting disc is fixedly provided with a sensing rod which slides through the lower end surface of the processing cylinder, the adjusting protrusion can slide in the circumferential direction of the fixed disc; the horizontal height of the adjusting protrusion is higher than the surface of the fixed disc, the surface of the fixed disc is higher than the surface of the adjusting groove; when the processing cavity is in the adsorption station, the sensing rod abuts against the surface of the fixed disc, at this time the first exhaust hole and the second exhaust hole are blocked with each other, and the drain hole is blocked by the partition plate; when the processing cavity is in the desorption station, the sensing rod abuts against the surface of the adjusting groove, at this time the first exhaust hole and the second exhaust hole are communicated with each other, and the drain hole is blocked by the partition plate; when the processing cavity is in the drying station, and the first drying program is performed on the activated carbon inside the vortex channel, the sensing rod abuts against the surface of the adjusting protrusion, so that the drain hole and the sliding pipe communicate the flow cavity with the lower chamber; when the processing cavity is in the drying station, and the second drying program is performed on the activated carbon inside the vortex channel, the adjusting protrusion slides on the fixed disc, so that the sensing rod abuts against the surface of the adjusting groove, at this time the first exhaust hole and the second exhaust hole are communicated, and the drain hole is blocked by the partition plate.

[0016] Further, the first supply pipe is used for connecting a water vapor source; and the second supply pipe is used for connecting a dry hot air source.

[0017] The beneficial effects of the present application are: the laboratory tail gas treatment device of the present application, which comprises a fixing frame, a treatment cylinder and a vortex cylinder, when the tail gas of the laboratory needs to be treated, the fixing frame is fixed at the position where the tail gas of the laboratory is discharged, the treatment cylinder is rotatably arranged on the fixing frame, the inside of the treatment cylinder is divided into three treatment cavities which are isolated from each other, and an adsorption station, a desorption station and a drying station are arranged on the fixing frame, one vortex cylinder is installed in each treatment cavity, activated carbon is filled in the vortex channel inside the vortex cylinder, when the vortex cylinder is in the treatment cavity at the adsorption station, the waste gas can flow from the central position of the vortex channel to the position away from the center; when the vortex cylinder is in the treatment cavity at the desorption station, the steam can desorb the activated carbon in the vortex channel; when the vortex cylinder is in the treatment cavity at the drying station, the first drying program and the second drying program are gradually performed on the activated carbon in the vortex channel, the first drying program is centrifugal dehydration, and the second drying program is heating drying, further, during the rotation of the treatment cylinder, one of the treatment cavities passes through the adsorption station, the desorption station and the drying station one by one when the treatment cylinder rotates on the fixing frame, during the treatment of the tail gas of the laboratory, if the treatment efficiency of the activated carbon in one of the treatment cavities is reduced, the activated carbon after desorption and drying can be replaced in time to continue to work by rotating the position of the treatment cylinder on the fixing frame, so as to ensure the efficiency of the treatment of the tail gas of the laboratory. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 A structural schematic diagram of a laboratory tail gas treatment device with activated carbon recycling provided by the embodiment of the present application;

[0020] Figure 2 A structural schematic diagram of the laboratory tail gas treatment device with activated carbon recycling provided by the embodiment of the present application, which is cut when the treatment cavity is at the adsorption station;

[0021] Figure 3 A structural schematic diagram of the laboratory tail gas treatment device with activated carbon recycling provided by the embodiment of the present application, which is cut when the treatment cavity is at the desorption station;

[0022] Figure 4 A structural schematic diagram of the laboratory tail gas treatment device with activated carbon recycling provided by the embodiment of the present application, which is cut when the treatment cavity is at the drying station;

[0023] Figure 5 A schematic diagram showing the cross-section of the middle chamber in a laboratory exhaust gas treatment device for activated carbon recycling provided in an embodiment of the present invention;

[0024] Figure 6 A schematic diagram showing the cross-section of the upper chamber in a laboratory exhaust gas treatment device for activated carbon recycling provided in an embodiment of the present invention;

[0025] Figure 7 A schematic diagram showing the cross-section of the regulating plate in a laboratory exhaust gas treatment device for activated carbon recycling provided in an embodiment of the present invention;

[0026] Figure 8 A schematic diagram of the vortex cylinder in a laboratory exhaust gas treatment device for activated carbon recycling provided in an embodiment of the present invention;

[0027] Figure 9 A schematic diagram of the cross-section of the vortex cylinder in a laboratory exhaust gas treatment device for activated carbon recycling provided in an embodiment of the present invention;

[0028] Figure 10 This is an exploded view of the vortex cylinder structure after cross-section in a laboratory exhaust gas treatment device for activated carbon recycling provided in an embodiment of the present invention.

[0029] Figure 11 for Figure 10 A magnified view of a section at point A in the middle;

[0030] Figure 12 for Figure 10 A magnified view of a section at point B.

[0031] In the diagram: 110, Fixing frame; 120, Processing cylinder; 121, Drive shaft; 122, Drive motor; 123, Processing chamber; 130, Vortex cylinder; 131, Vortex channel; 140, First fixing ring; 141, First supply pipe; 142, Second supply pipe; 150, Second fixing ring; 151, Exhaust pipe; 160, Third fixing ring; 161, First discharge pipe; 162, Second discharge pipe; 210, Partition plate; 220, Upper chamber; 230, Middle chamber; 240 1. Lower chamber; 250. Fixed plate; 251. Gas supply pipe; 260. Gas guide pipe; 270. Connecting hole; 310. Flow chamber; 311. Baffle; 312. One-way valve; 320. Inner surface; 321. Vent hole; 330. Outer surface; 340. Baffle; 350. Adjusting plate; 360. Sliding tube; 410. Fixed tube; 420. Adjusting tube; 430. Adjusting groove; 440. Adjusting protrusion; 450. Active motor; 460. Fixed shaft; 470. Sensing rod. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] like Figures 1 to 12 As shown in the figure, an embodiment of the present invention provides a laboratory exhaust gas treatment device for activated carbon recycling, which includes a fixed frame 110, a treatment cylinder 120 and a vortex cylinder 130.

[0036] The mounting frame 110 is fixedly installed at the location of the laboratory exhaust gas discharge. A treatment cylinder 120 is rotatably mounted on the mounting frame 110. The treatment cylinder 120 is cylindrical, and three mutually isolated treatment chambers 123 are arranged circumferentially inside the treatment cylinder 120. A drive motor 122 is mounted on the mounting frame 110, and a drive shaft 121 is coaxially fixed to the lower surface of the treatment cylinder 120. The drive motor 122 drives the treatment cylinder 120 to rotate on the mounting frame 110 via the drive shaft 121. The mounting frame 110 has an adsorption station, a desorption station, and a drying station. When the treatment cylinder 120 rotates on the mounting frame 110, one of the treatment chambers 123 passes through the adsorption station, desorption station, and drying station in sequence.

[0037] Three vortex cylinders 130 are provided, each located within a processing chamber 123. Each vortex cylinder 130 has a vortex channel 131 filled with activated carbon. The activated carbon particles near the center of the vortex channel 131 have a larger diameter than those further away. When the processing chamber 123 is in the adsorption position, the waste gas flows from the center of the vortex channel 131 towards the area further away. As the waste gas flows along the vortex channel 131, the activated carbon particles of different diameters form a step-by-step filtration process, improving the adsorption effect of the activated carbon on the waste gas. When the processing chamber 123 is in the desorption position, steam desorbs the activated carbon inside the vortex channel 131. Specifically, the steam's movement path is radial to the circumcircle of the vortex channel 131's cross-section. This allows the steam to quickly contact all the activated carbon, reducing the steam's movement path and ensuring that the steam desorbs the activated carbon at a lower pressure. When the processing chamber 123 is in the drying position, the activated carbon inside the vortex channel 131 is subjected to a first drying procedure and a second drying procedure. The first drying procedure is centrifugal dehydration, and the second drying procedure is heating and drying. Furthermore, when the processing chamber 123 is in the drying position, the activated carbon in the vortex channel 131 is first centrifugally dehydrated. At this time, the vortex cylinder 130 needs to be driven to rotate around its own axis in the processing chamber 123. Under the action of centrifugal force, the water in the activated carbon can be removed from the activated carbon. When the vortex cylinder 130 stops rotating, hot dry air is supplied to the vortex channel 131 again. The movement path of the hot dry air is the radial direction of the circumcircle of the cross-section of the vortex channel 131. The hot dry air can quickly contact all the activated carbon, reduce the movement path of the hot dry air, and ensure that the hot dry air dries the activated carbon at a relatively low pressure.

[0038] In one embodiment, a first fixing ring 140, a second fixing ring 150, and a third fixing ring 160 are fixedly disposed on the fixing frame 110. The first fixing ring 140, the second fixing ring 150, and the third fixing ring 160 are coaxially spaced and rotatably disposed outside the processing cylinder 120. In the axial direction of the processing cylinder 120, the first fixing ring 140 is positioned above the second fixing ring 150, and the second fixing ring 150 is positioned above the third fixing ring 160. The first fixing ring 140 is provided with a first supply pipe 141 and a second supply pipe 142 extending radially therefrom. In the circumferential direction of the first fixing ring 140, the first supply pipe 141 and the second supply pipe 142 are spaced apart. The second fixing ring 150 is provided with an exhaust pipe 151 extending radially therefrom. The third fixing ring 160 is provided with a first discharge pipe 161 and a second discharge pipe 162 extending in its own radial direction. In the circumferential direction of the third fixing ring 160, the first discharge pipe 161 and the second discharge pipe 162 are arranged at intervals, wherein the first supply pipe 141 and the first discharge pipe 161 are in the same vertical plane, and the second supply pipe 142 and the second discharge pipe 162 are in the same vertical plane.

[0039] Each processing chamber 123 is equipped with two horizontal partitions 210, which divide the processing chamber 123 into an upper chamber 220, a middle chamber 230, and a lower chamber 240 that are isolated from each other. A vortex tube 130 is located in the middle chamber 230. Each partition 210 between the middle chamber 230 and the upper chamber 220 is provided with a first connecting channel; each partition 210 between the middle chamber 230 and the lower chamber 240 is provided with a second connecting channel. A vent is provided on the side wall of the middle chamber 230. When the processing chamber 123 is in the adsorption position, the exhaust pipe 151 is connected to the vent, so that the middle chamber 230 is connected to the external environment. The laboratory exhaust gas enters the center of the vortex channel 131 and flows along the vortex channel 131 into the middle chamber 230, and then enters the external environment through the vent and the exhaust pipe 151. When the processing chamber 123 is in the desorption position, the first supply pipe 141 is connected to the upper chamber 220 and is connected to a steam source. Steam enters the upper chamber 220 through the first supply pipe 141 and then enters the middle chamber 230 through the first connecting channel. The steam can desorb the activated carbon in the vortex channel 131. After contacting the activated carbon, the steam enters the lower chamber 240 through the second connecting channel and is then discharged from the processing cylinder 120 through the first discharge pipe 161. When the processing chamber 123 is in the drying position, the second supply pipe 142 is connected to the upper chamber 220 and is connected to a drying hot air source. Drying hot air enters the upper chamber 220 through the second supply pipe 142 and then enters the middle chamber 230 through the first connecting channel. The drying hot air can dry the activated carbon in the vortex channel 131. After contacting the activated carbon, the drying hot air enters the lower chamber 240 through the second connecting channel and is then discharged from the processing cylinder 120 through the second discharge pipe 162.

[0040] In one embodiment, a fixing plate 250 is fixedly mounted on the fixing frame 110. The fixing plate 250 is horizontally positioned below the processing cylinder 120 and is coaxially arranged with the processing cylinder 120. A gas supply pipe 251 is fixedly mounted on the fixing plate 250, and the laboratory exhaust gas outlet is connected to the gas supply pipe 251 to ensure that all exhaust gas generated in the laboratory can enter the interior of the gas supply pipe 251. A gas guide pipe 260 is provided at the centerline position of each vortex channel 131. The gas guide pipe 260 is vertically arranged, and its lower end passes through the partition 210 between the middle chamber 230 and the lower chamber 240. The lower end of the gas guide pipe 260 also passes through the lower end face of the processing cylinder 120. The surface of the gas guide pipe 260 in the middle chamber 230 is provided with multiple through holes, and the lower end of the gas guide pipe 260 can abut against the upper surface of the fixing plate 250. When the processing chamber 123 is in the adsorption position, the gas guide pipe 260 is connected to the gas delivery pipe 251. At this time, the waste gas generated in the laboratory smoothly enters the center of the vortex channel 131 through the gas delivery pipe 251 and the gas guide pipe 260.

[0041] In one embodiment, the vortex cylinder 130 has a hollow interior on its sidewall, forming a flow chamber 310. A first connecting channel, a connecting hole 270, is always connected to the flow chamber 310. The connecting hole 270 is located at one end of the vortex cylinder 130 away from its center. The vortex cylinder 130 has an inner surface 320 and an outer surface 330. The inner surface 320 is near the center of the vortex channel 131, and the outer surface 330 is away from the center of the vortex channel 131. Multiple vent holes 321 are provided on the inner surface 320, connecting the vortex channel 131 and the flow chamber 310. Multiple baffles 311 are provided within the flow chamber 310, and one-way valves 312 are installed on each baffle. The one-way valves 312 operate in a direction from away from the center of the vortex channel 131 to near the center of the vortex channel 131. When the processing chamber 123 is in the desorption position, the steam enters the flow chamber 310 through the connecting hole 270. Under the action of the one-way valve 312, the steam can fill the entire flow chamber 310. The water vapor in the flow chamber 310 can pass through the vent hole 321 and enter the vortex channel 131, so that the movement path of the steam is the radial direction of the circumcircle of the cross section of the vortex channel 131. The steam can quickly contact all the activated carbon, reduce the movement path of the steam, and ensure that the steam desorbs the activated carbon at a lower pressure. When the processing chamber 123 is in the drying position and the second drying process is performed on the activated carbon inside the vortex channel 131, the drying hot air enters the flow chamber 310 through the connecting hole 270. Under the action of the one-way valve 312, the drying hot air can fill the entire flow chamber 310. The drying hot air in the flow chamber 310 can pass through the vent hole 321 and enter the vortex channel 131, so that the movement path of the drying hot air is the radial direction of the circumcircle of the cross-section of the vortex channel 131. The drying hot air can quickly contact all the activated carbon, reduce the movement path of the drying hot air, and ensure that the drying hot air dries the activated carbon at a lower pressure.

[0042] In one embodiment, a plurality of baffles 340 are provided inside the vortex channel 131, each baffle 340 being fixedly connected to a baffle 311. Further, the baffles 340 are set in the radial direction of the vortex channel 131. When the treatment chamber 123 is in the adsorption position, the waste gas generated in the laboratory smoothly enters the center of the vortex channel 131 through the gas supply pipe 251 and the gas guide pipe 260. When the waste gas flows along the vortex channel 131, the waste gas can enter the flow chamber 310 through the vent 321. Under the action of the one-way valve 312, the flow of the waste gas in the flow chamber 310 is hindered. At the same time, the multiple baffles 340 inside the vortex channel 131 increase the flow path of the waste gas inside the vortex channel 131, thereby increasing the adsorption effect of activated carbon on the waste gas.

[0043] In one embodiment, the second connecting channel includes a first channel and a second channel. The first channel connects the middle chamber 230 and the lower chamber 240 when the processing chamber 123 is in the drying position and when the activated carbon inside the vortex channel 131 is subjected to a first drying process. Specifically, the first drying process is centrifugal dehydration, in which the vortex drum 130 is driven to rotate around its own axis within the middle chamber 230. Under the action of centrifugal force, the water is separated from the activated carbon, and the water separated from the activated carbon enters the lower chamber 240 through the first channel. The second channel is used to connect the middle chamber 230 and the lower chamber 240 when the processing chamber 123 is in the drying position and the second drying process is performed on the activated carbon inside the vortex channel 131. Specifically, the second drying process is heating and drying. Drying hot air enters the flow chamber 310 through the connecting hole 270. Under the action of the one-way valve 312, the drying hot air can fill the entire flow chamber 310. The drying hot air in the flow chamber 310 can pass through the vent hole 321 and enter the vortex channel 131. When the drying hot air comes into contact with the wet activated carbon, it can carry away the moisture in the activated carbon. The gas that has come into contact with the activated carbon enters the lower chamber 240 through the second channel.

[0044] In one embodiment, the first channel includes an adjusting plate 350 and multiple sliding tubes 360. The adjusting plate 350 slides through a partition 210 between the middle chamber 230 and the lower chamber 240. The adjusting plate 350 is coaxially arranged with the vortex cylinder 130. The lower ends of the multiple sliding tubes 360 are fixedly mounted on the adjusting plate 350. The sidewalls of the sliding tubes 360 are provided with multiple through-holes. The upper ends of the sliding tubes 360 can enter the flow chamber 310. The multiple sliding tubes 360 are evenly distributed in the flow chamber 310. When the adjusting plate 350 slides up and down, the drainage holes can be blocked or unblocked by the partition 210. When the processing chamber 123 is in the drying position and the first drying process is performed on the activated carbon inside the vortex channel 131, the drainage holes and the sliding tubes 360 connect the flow chamber 310 and the lower chamber 240. Furthermore, a fixed shaft 460 is fixedly installed on the vortex cylinder 130. The fixed shaft 460 passes through the upper partition 210 and the upper end face of the processing cylinder 120. An active motor 450 is fixedly installed on the upper end of the processing cylinder 120. The active motor 450 can be started when the processing chamber 123 is in the drying position. The active motor 450 can drive the vortex cylinder 130 to rotate through the fixed shaft 460. The active motor 450 drives the vortex cylinder 130 to rotate a preset number of times and then stops. Subsequently, the activated carbon inside the vortex channel 131 is subjected to a second drying procedure.

[0045] In one embodiment, the second channel includes multiple fixed tubes 410 and multiple regulating tubes 420. The multiple fixed tubes 410 are fixedly disposed in the middle chamber 230 and are evenly distributed along the outer surface 330. The lower end of the fixed tubes 410 is fixedly connected to the regulating plate 350. The surface of the fixed tubes 410 in the middle chamber 230 is provided with multiple first exhaust holes. Each regulating tube 420 is slidably inserted into the interior of a fixed tube 410. The surface of the regulating tube 420 is provided with multiple second exhaust holes, and the lower end of the regulating tube 420 is fixedly connected to the regulating plate 350. When the processing chamber 123 is in the drying position and the activated carbon inside the vortex channel 131 is subjected to a second drying procedure, the first exhaust holes and the second exhaust holes are connected. The drain hole is blocked by the partition 210. The drying hot air after contacting the activated carbon enters the lower chamber 240 through the first exhaust holes and the second exhaust holes, and then exits the processing cylinder 120 through the second discharge pipe 162. When the processing chamber 123 is in the desorption position, steam enters the upper chamber 220 through the first supply pipe 141 and enters the middle chamber 230 through the first connecting channel. The steam can desorb the activated carbon in the vortex channel 131. The water vapor after contacting the activated carbon enters the lower chamber 240 through the first exhaust port and the second exhaust port, and then exits the processing cylinder 120 through the first discharge pipe 161.

[0046] In one embodiment, the surface of the fixed disk 250 is provided with an adjustment groove 430 and an adjustment protrusion 440. A sensing rod 470 is fixedly mounted on the adjustment disk 250, and the sensing rod 470 slides through the lower end face of the processing cylinder 120. The adjustment protrusion 440 can slide in the circumferential direction of the fixed disk 250. In this embodiment, an arc-shaped rack is fixedly mounted on the adjustment protrusion 440, and a fixed motor is fixedly mounted on the fixed disk 250. A drive gear is fixedly mounted on the power output shaft of the fixed motor. The drive gear always meshes with the arc-shaped rack. When the fixed motor is started, the adjustment protrusion 440 can slide in the circumferential direction of the fixed disk 250.

[0047] The horizontal height of the adjusting protrusion 440 is higher than the surface of the fixed disk 250, and the surface of the fixed disk 250 is higher than the surface of the adjusting groove 430. When the processing chamber 123 is in the adsorption position, the sensing rod 470 abuts against the surface of the fixed disk 250, and there is a gap between the adjusting disk 350 and the lower end face of the vortex cylinder 130. At this time, the first exhaust port and the second exhaust port are mutually blocked, and the drain hole is blocked by the partition 210. Then, the waste gas adsorbed by the activated carbon is discharged into the external environment through the exhaust pipe 151 and the air guide hole. When the processing chamber 123 is in the desorption position, the sensing rod 470 abuts against the surface of the adjusting groove 430, and the gap between the adjusting disk 350 and the vortex cylinder 130 increases. At this time, the first exhaust port and the second exhaust port are interconnected, and the drain hole is blocked by the partition 210. When the processing chamber 123 is in the drying position and the activated carbon inside the vortex channel 131 is subjected to the first drying process, the sensing rod 470 abuts against the surface of the adjusting protrusion 440, and the adjusting plate 350 abuts against the lower end face of the vortex cylinder 130. At this time, the first exhaust port and the second exhaust port are mutually blocked, and the drain hole and the sliding tube 360 ​​connect the flow chamber 310 with the lower chamber 240. When the processing chamber 123 is in the drying position and the activated carbon inside the vortex channel 131 is subjected to the second drying process, the adjusting protrusion 440 slides on the fixed plate 250, causing the sensing rod 470 to disengage from the surface abutting the adjusting protrusion 440, and the sensing rod 470 abuts against the surface of the adjusting groove 430 again. At this time, the first exhaust port and the second exhaust port are connected, and the drain hole is blocked by the partition plate 210.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laboratory exhaust gas treatment device for activated carbon recycling, characterized in that, include: Fixture; The processing cylinder is rotatably mounted on the fixed frame. The processing cylinder has three mutually isolated processing chambers inside. The fixed frame is provided with an adsorption station, a desorption station and a drying station. When the processing cylinder rotates on the fixed frame, one of the processing chambers passes through the adsorption station, the desorption station and the drying station in turn. The system includes three vortex cylinders, each disposed within a processing chamber. Each vortex cylinder has a vortex channel filled with activated carbon. The activated carbon particles near the center of the vortex channel have a larger diameter than those further away from the center. When the vortex cylinder is in the processing chamber of the adsorption station, waste gas can flow from the center of the vortex channel away from the center. When the vortex cylinder is in the processing chamber of the desorption station, steam can desorb the activated carbon inside the vortex channel. When the vortex cylinder is in the processing chamber at the drying station, the activated carbon inside the vortex channel is subjected to a first drying procedure and a second drying procedure in stages. The first drying procedure is centrifugal dehydration, and the second drying procedure is heating and drying. The fixing frame is fixedly provided with a first fixing ring, a second fixing ring, and a third fixing ring, which are coaxially and rotatably disposed outside the processing cylinder. The first fixing ring is provided with a first supply pipe and a second supply pipe; the second fixing ring is provided with an exhaust pipe; the third fixing ring is provided with a first discharge pipe and a second discharge pipe. Each processing chamber is provided with two partitions, which divide the processing chamber into an upper chamber, a middle chamber, and a lower chamber that are isolated from each other. The vortex cylinder is disposed in the middle chamber. Each partition between the middle chamber and the upper chamber is provided with a first connecting channel; each partition between the middle chamber and the lower chamber is provided with a second connecting channel. The vortex cylinder has a hollow interior sidewall, and the cavity inside the sidewall is a flow chamber. The first connecting channel is a connecting hole that communicates with the flow chamber. The vortex cylinder has an inner surface and an outer surface. The inner surface is the surface near the center of the vortex channel, and the outer surface is the surface away from the center of the vortex channel. The inner surface has multiple vent holes that connect the vortex channel and the flow chamber. The flow chamber has multiple baffles, and each baffle has a one-way valve. The one-way valve's conduction direction is from a position away from the center of the vortex channel to a direction near the center of the vortex channel.

2. The laboratory exhaust gas treatment device for activated carbon recycling according to claim 1, characterized in that: When the processing chamber is in the adsorption position, the exhaust pipe is connected to the middle chamber; when the processing chamber is in the desorption position, the first supply pipe is connected to the upper chamber, and the first discharge pipe is connected to the lower chamber; when the processing chamber is in the drying position, the second supply pipe is connected to the upper chamber, and the second discharge pipe is connected to the lower chamber.

3. The laboratory exhaust gas treatment device for activated carbon recycling according to claim 2, characterized in that: A fixed plate is fixedly mounted on the fixed frame, and a gas supply pipe is fixedly mounted on the fixed plate. A gas guide pipe is provided at the center line position of each vortex channel. The gas guide pipe passes through the partition between the middle chamber and the lower chamber, and also passes through the lower end face of the processing cylinder. Multiple through holes are provided on the surface of the gas guide pipe in the middle chamber. The lower end of the gas guide pipe abuts against the fixed plate. When the processing chamber is in the adsorption position, the gas guide pipe is connected to the gas supply pipe.

4. The laboratory exhaust gas treatment device for activated carbon recycling according to claim 3, characterized in that: The vortex channel is equipped with multiple baffles, and each baffle is fixedly connected to a baffle.

5. A laboratory exhaust gas treatment device for activated carbon recycling according to claim 4, characterized in that: The second connecting channel includes a first channel and a second channel. The first channel is used to connect the middle chamber and the lower chamber when the processing chamber is in the drying position and the first drying program is performed on the activated carbon inside the vortex channel. The second channel is used to connect the middle chamber and the lower chamber when the processing chamber is in the drying position and the second drying program is performed on the activated carbon inside the vortex channel.

6. A laboratory exhaust gas treatment device for activated carbon recycling according to claim 5, characterized in that: The first channel includes an adjusting plate and multiple sliding tubes. The adjusting plate slides through the partition between the middle chamber and the lower chamber. The multiple sliding tubes are fixedly mounted on the adjusting plate. The sidewalls of the sliding tubes are provided with multiple through-holes. The upper ends of the sliding tubes can enter the flow chamber. The multiple sliding tubes are evenly distributed in the flow chamber. When the adjusting plate slides up and down, the drainage holes can be blocked or unblocked by the partition. When the processing chamber is in the drying position and the first drying process is performed on the activated carbon inside the vortex channel, the drain hole and the sliding tube connect the flow chamber to the lower chamber.

7. A laboratory exhaust gas treatment device for activated carbon recycling according to claim 6, characterized in that: The second channel includes multiple fixed tubes and multiple adjusting tubes. The multiple fixed tubes are fixedly disposed in the middle chamber and are evenly distributed along the outer surface. The lower end of each fixed tube passes through the adjusting plate, and the surface of each fixed tube is provided with multiple first exhaust holes. Each adjusting tube is slidably inserted into the interior of one of the fixed tubes. The surface of each adjusting tube is provided with multiple second exhaust holes, and the lower end of each adjusting tube is fixedly connected to the adjusting plate. When the processing chamber is in the drying position and the second drying procedure is performed on the activated carbon inside the vortex channel, the first exhaust holes and the second exhaust holes are connected, and the drain hole is blocked by the partition.

8. A laboratory exhaust gas treatment device for activated carbon recycling according to claim 7, characterized in that: The surface of the fixed disk is provided with an adjustment groove and an adjustment protrusion. A sensing rod is fixedly mounted on the adjustment disk, and the sensing rod slides through the lower end face of the processing cylinder. The adjustment protrusion can slide in the circumferential direction of the fixed disk. The horizontal height of the adjustment protrusion is higher than the surface of the fixed disk, and the surface of the fixed disk is higher than the surface of the adjustment groove. When the processing chamber is in the adsorption position, the sensing rod abuts against the surface of the fixed disk. At this time, the first exhaust port and the second exhaust port are mutually blocked, and the drain port is blocked by the partition. When the processing chamber is in the desorption position, the sensing rod abuts against the surface of the adjustment groove. At this time, the first exhaust port... The first exhaust hole and the second exhaust hole are interconnected, and the drain hole is blocked by the partition. When the processing chamber is in the drying position and the first drying program is performed on the activated carbon inside the vortex channel, the sensing rod abuts against the surface of the adjusting protrusion, so that the drain hole and the sliding tube connect the flow chamber and the lower chamber. When the processing chamber is in the drying position and the second drying program is performed on the activated carbon inside the vortex channel, the adjusting protrusion slides on the fixed plate, so that the sensing rod abuts against the surface of the adjusting groove. At this time, the first exhaust hole and the second exhaust hole are interconnected, and the drain hole is blocked by the partition.

9. A laboratory exhaust gas treatment device for activated carbon recycling according to claim 2, characterized in that: The first supply pipe is used to connect to a water vapor source; the second supply pipe is used to connect to a dry hot air source.

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