Environment-friendly combined exhaust gas collecting and filtering device

Abstract

The application relates to the field of environmental protection equipment, and particularly discloses an environmental protection combined waste gas collecting and filtering device, which comprises an air inlet nozzle, a front filter assembly, a spraying pretreatment device, a self-cleaning assembly and a concentration absorption device. The front filter assembly is connected with the air inlet nozzle. The spraying pretreatment device is connected with the front filter assembly. The self-cleaning assembly is connected with the inside of the spraying pretreatment device. The concentration absorption device is connected with the side, away from the air inlet nozzle, of the spraying pretreatment device. The concentration absorption device comprises a rotary wheel adsorption device and a membrane separation absorption device. The membrane separation absorption device is connected with the rotary wheel adsorption device, effectively filters dust and water-soluble pollutants, and avoids the blockage of subsequent devices. The combination of the concentration absorption and the rotary wheel adsorption converts low-concentration waste gas into high-concentration gas flow. The membrane separation coupled with ionic liquid absorption realizes the separation of residual non-water-soluble pollutants.

Description

Technical Field

[0001] The present invention relates to the environmental protection equipment industry, and in particular to an environmentally friendly combined waste gas collecting and filtering device. Background Art

[0002] In modern industrial production, printing, coating and other industries are important components of the national economy, and the waste gas problems generated in their production processes are becoming increasingly serious. The waste gas emitted by such industries has the remarkable characteristics of low concentration, large air volume and complex composition. The pollutant concentration is usually less than 100mg / m 3 , but the exhaust air volume exceeds 100,000 m 3 / h, which also contains volatile organic compounds such as benzene, esters, and ketones. These waste gases not only pollute the atmospheric environment but also harm human health, causing respiratory diseases, nervous system damage and other problems.

[0003] Traditional technologies for treating this type of waste gas have numerous drawbacks. The currently used combined treatment process suffers from system-level issues such as residual waste purification and insufficient energy utilization, leading to unstable overall treatment efficiency. Therefore, developing a combined exhaust gas collection and filtration device that can achieve efficient, coordinated operation of multiple units is crucial for overcoming the challenges of treating low-concentration, high-volume exhaust gases. Summary of the Invention

[0004] The object of the present invention is to provide an environmentally friendly combined exhaust gas collecting and filtering device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An environmentally friendly combined exhaust gas collecting and filtering device, comprising:

[0007] Air intake nozzle;

[0008] A pre-filter assembly, the pre-filter assembly being connected to the air inlet nozzle;

[0009] A spray pre-treatment device, which is connected to the pre-filter assembly and is used to filter out water-soluble pollutants;

[0010] A self-cleaning component, the self-cleaning component is connected to the interior of the spray pretreatment device;

[0011] A concentrated absorption device, the concentrated absorption device being connected to a side of the spray pretreatment device away from the air inlet nozzle;

[0012] Wherein, the concentration absorption device comprises:

[0013] A rotary adsorption device, which is connected to the side of the spray pretreatment device away from the air inlet nozzle and is used to filter out non-water-soluble pollutants;

[0014] The membrane separation absorption device and the rotary adsorption device are used to separate residual non-water-soluble dirt.

[0015] Compared with the existing technology, the beneficial effects of the present invention are: through three-stage stepped spray pretreatment, dust and water-soluble pollutants are efficiently filtered out to avoid clogging of subsequent devices; concentrated absorption is combined with rotor adsorption to convert low-concentration exhaust gas into high-concentration airflow, thereby improving treatment efficiency; membrane separation is coupled with ionic liquid absorption to achieve the separation of residual non-water-soluble pollutants, further improving the overall stability of exhaust gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the internal structure of an environmentally friendly combined exhaust gas collection and filtering device in an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the external structure of an environmentally friendly combined exhaust gas collection and filtering device in an embodiment of the present invention.

[0018] Figure 3 The figure is a schematic structural diagram of a waste collecting ring bin in an environmentally friendly combined waste gas collecting and filtering device in an embodiment of the present invention.

[0019] Figure 4 This is a schematic structural diagram of a wheel frame in an environmentally friendly combined exhaust gas collecting and filtering device according to an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the internal structure of the second guide chamber in an environmentally friendly combined exhaust gas collection and filtering device in an embodiment of the present invention.

[0021] In the figure: 1 - air inlet nozzle, 2 - front filter assembly, 3 - spray pretreatment device, 4 - self-cleaning assembly, 5 - concentrated absorption device, 6 - rotary adsorption device, 7 - membrane separation absorption device, 201 - first guide bin, 202 - expansion bin, 203 - pollution collection ring bin, 204 - pollution collection tank, 205 - pollution discharge control piece, 301 - liquid storage tank, 302 - guide bin, 303 - graded spray pipe bin, 304 - communication control piece, 401 - first support shaft seat, 402 - first driving piece, 403 - linkage shaft, 404 - transmission rod, 405 - cleaning brush, 406 - second support shaft seat, 407 - cleaning piece, 601 - second guide bin, 602 - adsorption concentration bin, 603 - second driving piece, 604 - wheel frame, 605 - heating piece, 606 - heat supply pipe, 607 - cooling piece, 608 - cooling pipe, 609 - concentrated screening piece, 701 - negative pressure pipe, 702 - switching bin, 703 - negative pressure piece, 704 - separation membrane piece, 705 - air outlet nozzle. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] An environment-friendly combined waste gas collection and filtration device, in an embodiment of the present application, as shown in Figure 1 and Figure 2 , comprises: an air inlet nozzle; a front filter assembly connected in communication with the air inlet nozzle; a spray pretreatment device connected in communication with the front filter assembly for filtering water-soluble pollutants; a self-cleaning assembly connected to the inside of the spray pretreatment device; and a concentrated absorption device connected in communication with the side of the spray pretreatment device away from the air inlet nozzle; wherein the concentrated absorption device comprises: a rotary adsorption device connected in communication with the side of the spray pretreatment device away from the air inlet nozzle for filtering non-water-soluble pollutants; and a membrane separation absorption device connected with the rotary adsorption device for separating residual non-water-soluble pollutants.

[0024] In an embodiment of the present application:

[0025] As shown in Figures 1 to 3As shown, the pre-filter assembly 2 includes: a first guide bin 201, which is connected to the air inlet nozzle 1; an extension bin 202, which is connected to the end of the first guide bin 201 away from the air inlet nozzle 1; a sewage ring bin 203, which is connected to the end of the extension bin 202 away from the first guide bin 201; a sewage collecting tank 204, which is arranged inside the sewage ring bin 203; a sewage discharge control member 205, which is connected to the bottom side of the sewage ring bin 203; and the sewage discharge control member 205 is a solenoid valve.

[0026] This device is set at the exhaust gas discharge outlet. When the exhaust gas is collected and filtered, the concentration absorption device 5 is turned on to form a negative pressure airflow from the air inlet nozzle 1 expansion bin 202 to the sewage collection ring bin concentration absorption device 5. The exhaust gas enters the interior of the device through the above direction. First, the dust, liquid pollutants and some water-soluble substances in the exhaust gas are filtered out by the spray pretreatment device 3, thereby avoiding blockage of the subsequent rotary adsorption device 6 and the membrane separation absorption device 7. At this time, non-water-soluble VOCs (such as benzene, toluene) and other pollutants still remain in the exhaust gas entering the concentration absorption device 5. Then, the non-water-soluble pollutants are first enriched and concentrated by the concentration absorption device 5, and the low-concentration exhaust gas is converted into a high-concentration airflow and then processed by the membrane separation absorption device 7. When being processed by the membrane separation absorption device 7, the "gas selective permeability" characteristics of the hydrophobic membrane pores are utilized. The exhaust gas flows on the outside of the membrane and the ionic liquid flows on the inside of the membrane. The membrane pores only allow gas molecules to pass through, and the liquid is blocked due to surface tension, thereby realizing the separation of residual non-water-soluble pollutants. When the device is temporarily stopped, the interior of the expansion chamber 202 and the dirt collecting ring chamber 203 can be cleaned by the built-in self-cleaning component 4. After the cleaning is completed, the dirt discharge control component 205 can be opened to discharge the cleaned and accumulated dirt in a direction.

[0027] In one embodiment of the present invention:

[0028] like Figure 1 and Figure 2 As shown, the spray pretreatment device 3 includes: a liquid storage tank 301, the liquid storage tank 301 is connected to the first guide chamber 201; a conduction chamber 302, the conduction chamber 302 is connected to the liquid storage tank 301; a graded spray pipe chamber 303, the graded spray pipe chamber 303 is fixedly connected to the expansion chamber 202; a communication control member 304, one side of the communication control member 304 is connected to the conduction chamber 302, and the other side is connected to the graded spray pipe chamber 303; the communication control member 304 uses a micro-electronically controlled pump;

[0029] Liquid storage tank 301 contains water, weakly alkaline additives, and functional additives. The weakly alkaline additives can filter acidic gases, while the functional additives can enhance the solubility of weakly polar VOCs by reducing the surface tension of droplets. The graded spray pipe silo 303 adopts a three-step arrangement. Exhaust gas entering expansion chamber 202 flows horizontally through the spray zone at the bottom of the graded spray pipe silo 303. The three-step arrangement of the graded spray pipe silo 303 is perpendicular to the airflow direction, forming a three-stage treatment gradient of "pre-wash-fine wash-diversion," maximizing the gas-liquid contact area and extending the contact time. The pre-wash layer removes large dust particles and absorbs high-concentration water-soluble pollutants, thereby reducing the subsequent fine wash load. The fine wash layer captures fine dust, deeply absorbs medium- and low-concentration water-soluble VOCs, and enhances gas-liquid mass transfer. The diversion layer guides the exhaust gas evenly into the subsequent concentration absorption device 5, reducing eddy currents and pressure drop, and capturing escaping fine dust.

[0030] In one embodiment of the present invention:

[0031] like Figure 1 As shown, the self-cleaning component 4 includes: a first bracket shaft seat 401, the first bracket shaft seat 401 is connected to the side of the rotary adsorption device 6 close to the dirt collecting ring bin 203; a first driving member 402, the first driving member 402 is connected to the middle of the first bracket shaft seat 401; the first driving member 402 is an electric shaft seat; a linkage shaft 403, the linkage shaft 403 is connected to the first driving member 402; a transmission rod 404, the transmission rod 404 is connected to the linkage shaft 403, and is arranged inside the dirt collecting ring bin 203; a cleaning brush 405, the cleaning brush 405 is connected to the end of the transmission rod 404 away from the linkage shaft 403, and abuts against the bottom surface of the dirt collecting tank 204;

[0032] When the waste gas is collected and processed, the positions of the transmission rod 404 and the cleaning brush 405 are as follows: Figure 1 As shown, the water-soluble dirt and large particle impurities filtered out by the spray pretreatment device 3 can be introduced into the sewage collecting tank 204 inside the sewage collecting ring warehouse 203 through the expansion warehouse 202. When the internal self-cleaning is performed, the first driving member 402 drives the linkage shaft 403 and the transmission rod 404 to rotate, and synchronously drives the cleaning brush 405 to rotate axially. The axially rotating cleaning brush 405 can clean the dirt attached to the inside of the sewage collecting tank 204. The cleaned dirt is gathered at the bottom side of the sewage collecting tank 204. After the cleaning is completed, the transmission rod 404 and the cleaning brush 405 are reset to Figure 1 In the position shown, the sewage control member 205 can be opened to discharge sewage;

[0033] In the present application, the first driving member 402 is not limited to an electric shaft seat, and can also be driven by a linear motor, an electric cylinder or a pneumatic cylinder, etc., as long as the rotation adjustment of the linkage shaft 403 can be achieved, and no specific limitation is made here.

[0034] In one embodiment of the present invention:

[0035] like Figure 1 As shown, the self-cleaning component 4 further includes: a second bracket shaft seat 406, the second bracket shaft seat 406 is connected to the side of the expansion chamber 202 near the first guide chamber 201; a cleaning member 407, one end of the cleaning member 407 is connected to the second bracket shaft seat 406, and the other end is connected to the end of the linkage shaft 403 away from the first driving member 402; the cleaning member 407 uses a multi-control high-pressure spray pipe;

[0036] When the linkage shaft 403 rotates, the cleaning part 407 can be driven to rotate synchronously. The cleaning part 407 is connected to the liquid storage tank 301 through a built-in hose (not shown in the figure), and the cleaning liquid can be replenished for the cleaning part 407. The exhaust gas introduced into the expansion warehouse 202 in the early stage contains more impurities, which are easy to gather and adhere to the inner wall of the expansion warehouse 202. When the cleaning part 407 is opened and rotates with the linkage shaft 403, high-pressure spray cleaning can be performed on the inner wall of the expansion warehouse 202 through several external holes, and the sewage generated by cleaning can be diverted to the inside of the sewage collecting ring warehouse 203.

[0037] In one embodiment of the present invention:

[0038] like Figures 1 to 4 As shown, the rotary adsorption device 6 includes: a second guide bin 601, which is connected to the side of the pollutant collecting ring bin 203 away from the expansion bin 202; an adsorption concentration bin 602, which is connected to the side of the second guide bin 601 away from the pollutant collecting ring bin 203; a second driving member 603, which is connected to the adsorption concentration bin 602; the second driving member 603 is an electric rotating shaft; a wheel frame 604, which is arranged inside the adsorption concentration bin 602 and is connected to the second driving member 603; a plurality of concentrating and screening members 609, and a plurality of concentrating and screening members 609. The wheel frame 604 is provided inside; the concentration and screening element 609 is a zeolite molecular sieve; the heating element 605 is connected to the adsorption concentration chamber 602; the heating element 605 is an electric heating fan; the heating pipe 606 is connected to the heating element 605 at one end and to the adsorption concentration chamber 602 at the other end; the cooling element 607 is connected to the side of the adsorption concentration chamber 602 away from the heating element 605; the cooling element 607 is an axial flow fan; the cooling pipe 608 is connected to the cooling element 607 at one end and to the adsorption concentration chamber 602 at the other end;

[0039] The heating element 605 and the cooling element 607 continuously run, and the heat supply pipe 606 and the cooling pipe 608 can be used to direct the flow of hot gas and normal temperature gas to the concentrated separation sieve 609 in the adsorption and concentration bin 602. The second driving element 603 can drive the wheel frame 604 to rotate periodically in the adsorption and concentration bin 602. When the exhaust gas filtered by the spray pretreatment device 3 enters the second guide bin 601, the exhaust gas can contact the concentrated separation sieve 609 in the tangential direction of the wheel frame 604. The VOCs molecules in the exhaust gas are captured by the zeolite micropores. When the concentrated separation sieve 609 containing the VOCs molecules rotates periodically to the region of the heat supply pipe 606 and contacts the hot gas, the VOCs are desorbed from the surface of the zeolite due to the increase in temperature, forming a high-concentration gas flow with a concentration of 10-20 times. The membrane separation and absorption device 7 is arranged on the side of the adsorption and concentration bin 602 opposite to the heat supply pipe 606. Under the action of negative pressure, the high-concentration gas flow is introduced into the inside of the membrane separation and absorption device 7. When the concentrated separation sieve 609 of the desorbed high-concentration gas flow rotates to the position of the cooling pipe 608 at the bottom, and contacts the normal temperature gas, the concentrated separation sieve 609 returns to the optimal adsorption state through the cooling of the normal temperature gas. A plurality of concentrated separation sieves 609 cycle the above process to complete a complete operation cycle.

[0040] In an embodiment of the present application:

[0041] As shown in Figure 1 and Figure 5 , the membrane separation and absorption device 7 comprises: a negative pressure pipe 701 connected to the side of the adsorption and concentration bin 602 away from the heat supply pipe 606; an adapter bin 702 connected to the top side of the adsorption and concentration bin 602 and connected to the end of the negative pressure pipe 701 away from the adsorption and concentration bin 602; a negative pressure element 703 connected to the adapter bin 702; the negative pressure element 703 is selected from a negative pressure fan pipe group; a separation membrane element 704 connected to the end of the negative pressure element 703 away from the adapter bin 702; the separation membrane element 704 is selected from a hollow limiting membrane group; and an exhaust air nozzle 705 connected to the bottom side of the separation membrane element 704.

[0042] When the negative pressure element 703 runs, negative pressure can be formed in the negative pressure pipe 701, the adapter bin 702 and the front-mounted components. The exhaust gas treated by the rotary adsorption device 6 is introduced into the separation membrane element 704 for membrane separation and coupling with ionic liquid absorption. The separation membrane element 704 comprises a hydrophobic microporous membrane and an oleophilic ionic liquid. The exhaust gas flows outside the membrane, and the ionic liquid flows inside the membrane. The membrane holes only allow gas molecules to pass through, and the liquid is blocked due to surface tension. The VOCs molecules diffuse from the gas phase to the liquid phase through the membrane holes due to the pressure difference between the two sides of the membrane, thereby realizing the separation of residual non-water-soluble pollutants.

[0043] The working principle of the present invention is as follows: the device is set at the exhaust gas outlet, and when the exhaust gas is collected and filtered, the concentration absorption device 5 is turned on to form a negative pressure airflow from the air inlet nozzle 1, the expansion bin 202, the sewage ring bin 203, the concentration absorption device 5, and the exhaust gas enters the interior of the device through the above direction. The dust, liquid pollutants and some water-soluble substances in the exhaust gas are first filtered out by the spray pretreatment device 3, thereby avoiding the subsequent rotation adsorption device 6 and the membrane separation absorption device 7 from being blocked. At this time, the exhaust gas entering the concentration absorption device 5 still has There are residual pollutants such as non-water-soluble VOCs (such as benzene and toluene), and then the non-water-soluble pollutants are first enriched and concentrated by the concentration absorption device 5, and the low-concentration exhaust gas is converted into a high-concentration airflow and then processed by the membrane separation absorption device 7. When being processed by the membrane separation absorption device 7, the "gas selective permeability" characteristics of the hydrophobic membrane pores are utilized. The exhaust gas flows on the outside of the membrane and the ionic liquid flows on the inside of the membrane. The membrane pores only allow gas molecules to pass through, and the liquid is blocked due to surface tension, thereby realizing the separation of residual non-water-soluble pollutants. When the device is temporarily out of use, the internal cleaning of the expansion bin 202 and the dirt collecting ring bin 203 can be carried out through the built-in self-cleaning component 4. After the cleaning is completed, the sewage discharge control component 205 can be opened to discharge the cleaned and accumulated dirt in a directional manner. Water, weak alkaline additives and functional additives are stored inside the liquid storage tank 301. The weak alkaline additives can be used to filter acidic gases, and the functional additives can enhance the solubility of weak polar VOCs by reducing the surface tension of droplets. The graded spray pipe bin 303 adopts a three-step setting. The exhaust gas entering the expansion bin 202 flows horizontally through the bottom spray area of ​​the graded spray pipe bin 303. The three-stepped graded spray pipe bin 303 is perpendicular to the airflow direction, forming a three-stage treatment gradient of "pre-washing-fine washing-diversion", thereby maximizing the gas-liquid contact area and extending the contact time. The pre-wash layer removes large particles of dust and absorbs high-concentration water-soluble pollutants, thereby reducing the subsequent fine-wash load; the fine-wash layer captures fine dust, deeply absorbs medium and low-concentration water-soluble VOCs, and enhances gas-liquid mass transfer; the guide layer guides the exhaust gas evenly into the subsequent concentration absorption device 5, reduces eddy currents and pressure drops, and captures escaped fine dust.

[0044] When the waste gas is collected and processed, the positions of the transmission rod 404 and the cleaning brush 405 are as follows: Figure 1 As shown, the water-soluble dirt and large particle impurities filtered out by the spray pretreatment device 3 can be introduced into the sewage collecting tank 204 inside the sewage collecting ring warehouse 203 through the expansion warehouse 202. When the internal self-cleaning is performed, the first driving member 402 drives the linkage shaft 403 and the transmission rod 404 to rotate, and synchronously drives the cleaning brush 405 to rotate axially. The axially rotating cleaning brush 405 can clean the dirt attached to the inside of the sewage collecting tank 204. The cleaned dirt is gathered at the bottom side of the sewage collecting tank 204. After the cleaning is completed, the transmission rod 404 and the cleaning brush 405 are reset to Figure 1As shown in the position, the sewage control component 205 can be opened to discharge sewage. The first driving component 402 is not limited to an electric shaft seat. It can also be driven by a linear motor, an electric cylinder or a cylinder, etc., as long as the rotation adjustment of the linkage shaft 403 can be achieved. No specific limitation is made here. When the linkage shaft 403 rotates, it can drive the cleaning component 407 to rotate synchronously. The cleaning component 407 is connected to the liquid storage tank 301 through a built-in hose (not shown in the figure), and the cleaning liquid can be added to the cleaning component 407. The exhaust gas introduced into the expansion chamber 202 in the early stage contains more impurities, which are easy to accumulate and adhere to the inner wall of the expansion chamber 202. When the cleaning component 407 is turned on and the linkage shaft 403 rotates, the cleaning component 407 can be driven to rotate synchronously. The cleaning component 407 is connected to the liquid storage tank 301 through a built-in hose (not shown in the figure), and the cleaning liquid can be added to the cleaning component 407. The exhaust gas introduced into the expansion chamber 202 in the early stage contains more impurities, which are easy to accumulate and adhere to the inner wall of the expansion chamber 202. The shaft 403 rotates and can perform high-pressure spray cleaning on the inner wall of the expansion chamber 202 through several external holes. The sewage generated by cleaning can be diverted to the inside of the sewage collecting ring chamber 203. The heating component 605 and the cooling component 607 are in continuous operation. The heating pipe 606 and the cooling pipe 608 can be directional through the adsorption concentration chamber 602 to provide hot flow gas and normal temperature gas for the concentration screening component 609. The second driving component 603 can drive the wheel frame 604 to rotate periodically in the adsorption concentration chamber 602. When the exhaust gas filtered by the spray pretreatment device 3 enters the second guide chamber 601, the exhaust gas can contact the concentration screening component 609 in the cross-sectional direction of the wheel frame 604, and the VOCs molecules in the exhaust gas Captured by the zeolite micropores, when the concentrated sub-screen 609 containing VOCs molecules is periodically rotated to the heating pipe 606 area and contacts the hot flow gas, VOCs are desorbed from the zeolite surface due to the temperature increase, forming a high-concentration airflow concentrated 10-20 times, and the membrane separation absorption device 7 is arranged on the side of the adsorption concentration bin 602 connected to the heating pipe 606. Under the action of negative pressure, the high-concentration airflow is introduced into the interior of the membrane separation absorption device 7. When the concentrated sub-screen 609 that desorbs the high-concentration airflow rotates to the bottom cooling pipe 608 position and contacts the normal temperature gas, the concentrated sub-screen 609 is cooled by the normal temperature gas and restored to the optimal adsorption state. 609 circulates the above process to complete a complete operation cycle. When the negative pressure component 703 is running, negative pressure can be formed inside the negative pressure pipe 701, the transfer chamber 702 and the front component, and the exhaust gas treated by the rotor adsorption device 6 is introduced into the separation membrane component 704. The separation membrane component 704 is used for membrane separation coupled with ionic liquid absorption. The separation membrane component 704 includes a hydrophobic microporous membrane and a lipophilic ionic liquid. The exhaust gas flows on the outside of the membrane and the ionic liquid flows on the inside of the membrane. The membrane pores only allow gas molecules to pass through. The liquid is blocked due to surface tension, and a VOCs partial pressure difference is formed on both sides of the membrane, which promotes the diffusion of VOCs from the gas phase through the membrane pores to the liquid phase, thereby achieving the separation of residual non-water-soluble pollutants.

[0045] In summary, through the three-stage ladder spraying pretreatment, dust and water-soluble pollutants are effectively filtered to avoid the subsequent device blockage; the combination of concentration absorption and rotary adsorption converts low-concentration waste gas into high-concentration gas flow to improve the treatment efficiency; the membrane separation coupled with ionic liquid absorption realizes the separation of residual non-water-soluble pollutants, further improving the overall stability of waste gas treatment.

[0046] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. An environmentally friendly combined exhaust gas collection and filtering device, characterized in that: include: Air intake nozzle; A pre-filter assembly, the pre-filter assembly being connected to the air inlet nozzle; A spray pre-treatment device, which is connected to the pre-filter assembly and is used to filter out water-soluble pollutants; A self-cleaning component, the self-cleaning component is connected to the interior of the spray pretreatment device; A concentrated absorption device, the concentrated absorption device being connected to a side of the spray pretreatment device away from the air inlet nozzle; Wherein, the concentration absorption device comprises: A rotary adsorption device, which is connected to the side of the spray pretreatment device away from the air inlet nozzle and is used to filter out non-water-soluble pollutants; A membrane separation and absorption device, wherein the membrane separation and absorption device and the rotary adsorption device are used to separate residual non-water-soluble dirt; in, The pre-filter assembly comprises: a first guide bin, the first guide bin being connected to the air inlet nozzle; An expansion chamber, the expansion chamber being connected to an end of the first guide chamber away from the air inlet nozzle; A dirt collecting ring bin, the dirt collecting ring bin being connected to an end of the expansion bin away from the first guide bin; A sewage collecting tank, the sewage collecting tank being arranged inside the sewage collecting ring bin; A sewage discharge control member, the sewage discharge control member being in communication with the bottom side of the sewage collecting ring bin; The spray pretreatment device comprises: a liquid storage tank connected to the first guide compartment; A conduction chamber, the conduction chamber being connected to the liquid storage tank; The graded spray pipe bin is fixedly connected to the expansion bin through the graded spray pipe bin. The graded spray pipe bin adopts a three-step arrangement and gradually decreases in height along the air inlet direction. The graded spray pipe bin of the three-step arrangement is perpendicular to the airflow direction. A connecting control member, one side of which is connected to the conduction chamber and the other side is connected to the graded spray pipe chamber The self-cleaning component comprises: A first bracket shaft seat, wherein the first bracket shaft seat is connected to a side of the rotor adsorption device close to the dirt collecting ring bin; a first driving member connected to a middle portion of a shaft seat of the first bracket; A linkage shaft connected to the first driving member; A transmission rod, which is connected to the linkage shaft and is arranged inside the dirt collecting ring bin; A cleaning brush connected to an end of the transmission rod away from the linkage shaft and abutting against the bottom surface of the dirt collecting tank; a second bracket shaft seat connected to a side of the expansion compartment close to the first guide compartment; A cleaning member, one end of which is connected to the shaft seat of the second bracket, and the other end of which is connected to an end of the linkage shaft away from the first driving member.

2. The environmentally friendly combined exhaust gas collecting and filtering device according to claim 1, characterized in that: The rotary adsorption device comprises: a second guide bin, the second guide bin being connected to a side of the dirt collecting ring bin away from the expansion bin; An adsorption concentration chamber, the adsorption concentration chamber being connected to a side of the second guide chamber away from the pollution collecting ring chamber; a second driving member connected to the adsorption concentration chamber; a wheel frame, the wheel frame being disposed inside the adsorption concentration bin and connected to the second driving member; A plurality of concentrating and screening components are arranged inside the wheel frame; A heating element connected to the adsorption concentration chamber; A heating pipe, one end of which is connected to the heating element, and the other end of which is connected to the adsorption concentration tank; a cooling element connected to a side of the adsorption concentration chamber away from the heating element; A cooling pipe, one end of which is connected to the cooling element, and the other end of which is connected to the adsorption concentration bin.

3. The environmentally friendly combined exhaust gas collecting and filtering device according to claim 2, characterized in that: The membrane separation absorption device comprises: A negative pressure pipe, the negative pressure pipe being connected to a side of the adsorption concentration chamber away from the heating pipe; A transfer chamber connected to the top side of the adsorption and concentration chamber and connected to an end of the negative pressure pipe away from the adsorption and concentration chamber; A negative pressure member, the negative pressure member being in communication with the transfer chamber; A separation membrane element connected to an end of the negative pressure element away from the transfer chamber; An exhaust air nozzle is communicated with the bottom side of the separation membrane element.

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