Exhaust gas emission filtering device

Abstract

The present invention relates to an exhaust gas emission filtering device applied to the field of exhaust gas treatment, comprising a purification mechanism, an exhaust gas inlet end of the purification mechanism is connected to a sampling mechanism, an output end of the sampling mechanism is connected to a processing mechanism, and an output end of the processing mechanism is connected to a control mechanism; the control mechanism controls the rotation direction and rotation speed of a rotating drum body through an actuator, and the control mechanism also controls the up and down movement and stopping of an adsorption layer through an actuator. The sampling mechanism, processing mechanism, control mechanism, actuator and purification mechanism are adopted to achieve the effect of real-time adjustment of the operating state of the purification unit, so that the purification unit can always maintain a high exhaust gas treatment efficiency. At the same time, different treatments can be performed according to different exhaust gases to produce different treatment effects, so that the exhaust gas emission filtering device has a wide range of applications and achieves an adaptive exhaust gas treatment effect. Compared with the prior art, it is more practical.

Description

Technical Field

[0001] The present invention relates to a filter device, in particular to an exhaust gas emission filter device applied to the exhaust gas treatment field. Background Art

[0002] At present, with the development of industry, waste gas emissions are becoming more and more serious. Waste gas refers to toxic and harmful gases discharged by humans in the process of production and life; especially chemical plants, steel mills, pharmaceutical plants, coking plants and refineries, etc. The waste gas emitted has a strong odor, seriously polluting the environment and affecting human health. The emission of waste gas is caused by combustion in many places, and the waste gas generated by combustion contains a large amount of combustion dust particles, which seriously pollutes the air.

[0003] After searching, the specification of Chinese patent CN211487049U discloses an exhaust gas emission filtering device, including a water tank, a cylinder, an oil curtain box and an oil spraying device. A bracket is fixedly welded at the bottom of the water tank. There are three brackets and they are evenly arranged at the lower end of the water tank. A cylinder is arranged at the upper end of the water tank. The inside of the cylinder is hollow. An oil curtain box is arranged inside the cylinder. A fixed plate is installed inside the oil curtain box. An oil spraying device is fixedly installed on the fixed plate. The exhaust gas emission filtering device performs three-layer filtration on the exhaust gas by installing a water tank, activated carbon and an oil curtain box. First, the exhaust gas enters the water tank, and the water in the water tank dissolves the particles in the exhaust gas into the water, thereby realizing the first filtration. The filtered gas will be discharged from the top of the water tank and enter the partition net. The activated carbon installed in the partition net will absorb the harmful substances in the exhaust gas, thereby realizing the secondary filtration effect. The exhaust gas passing through the activated carbon will pass through the outer ring and be discharged from the pores of the outer ring.

[0004] Existing exhaust gas emission filtering devices usually treat and filter exhaust gas through fixed structures or materials. Although they have a good exhaust gas treatment effect, they can only treat a single exhaust gas with a constant composition. In actual use, the discharged exhaust gas will change in real time, which is mainly reflected in the different proportions of the exhaust gas composition, the temperature of the exhaust gas, the humidity of the exhaust gas, etc. The fixed structure or material cannot adapt well to the current exhaust gas changes when treating the changeable exhaust gas, and it is difficult to maintain a consistent treatment effect. The use has certain limitations. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to provide an exhaust gas emission filtering device which can adjust the treatment effect in real time and adapt to the real-time changes of the exhaust gas.

[0006] In order to solve the above problems, the present invention provides an exhaust gas emission filtering device, including a purification mechanism, the exhaust gas inlet end of the purification mechanism is connected to a sampling mechanism, the output end of the sampling mechanism is connected to a processing mechanism, and the output end of the processing mechanism is connected to a control mechanism;

[0007] The purification mechanism includes:

[0008] The rotating drum body is a cylinder body rotatably mounted on a support frame, and the upper and lower ends of the rotating drum body are rotatably connected to an air inlet pipe and an exhaust pipe through connecting pieces;

[0009] The purification unit includes a catalyst bed fixed to the rotating drum and an adsorption layer arranged below the catalyst bed, and the adsorption layer is installed in the rotating drum so as to be movable up and down;

[0010] The control mechanism controls the rotation direction and rotation speed of the rotating drum through the actuator, and the control mechanism also controls the up and down movement and stop of the adsorption layer through the actuator.

[0011] In the above-mentioned exhaust gas emission filtering device, the exhaust gas entering the rotating drum body is sampled by the sampling mechanism, and the sampled gas is transported to the processing mechanism, the processing mechanism analyzes the gas, and feeds back the analysis results to the control mechanism, the control mechanism controls the rotation direction and rotation speed of the rotating drum body through the actuator, and simultaneously controls the up and down movement and stop of the adsorption layer, thereby adjusting the operation state of the purification unit, so that the catalytic bed and the adsorption layer increase or decrease with the rotation speed of the rotating drum body, thereby increasing the contact time of the exhaust gas with the catalytic bed or the adsorption layer when passing through the catalytic bed and the adsorption layer or shortening the contact time, and at the same time, it can also adjust the travel required for the exhaust gas to enter the adsorption layer after passing through the catalytic bed, thereby controlling the reaction time of the exhaust gas;

[0012] In this way, the operating state of the purification unit can be adjusted in real time according to the analysis results of the gas, so that the purification unit can always maintain a high exhaust gas treatment efficiency. At the same time, different treatments can be performed according to different exhaust gases to produce different treatment effects, thereby making the exhaust gas emission filtration device have a wide range of applications and achieving adaptive exhaust gas treatment effects. Compared with the existing technology, it is more practical.

[0013] As a further supplement to the present application, a plurality of vertically distributed sampling tubes are fixedly connected to one side of the air inlet pipe, and the sampling tubes transport the internal gas samples entering the rotating drum through the air inlet pipe to the sampling mechanism.

[0014] When the exhaust gas passes through the intake pipe, part of the exhaust gas is transported to the sampling mechanism through multiple sampling tubes on the intake pipe, ensuring that the sampling mechanism can effectively and multiplexly sample the exhaust gas entering the rotating drum. Collecting multiple exhaust gas samples can ensure the accuracy of sampling and the accuracy of subsequent analysis results.

[0015] As a further supplement to the present application, a temperature interference tube and a humidity regulating tube which are distributed vertically are fixed and connected to the other side of the air inlet pipe;

[0016] Solenoid valves are installed on the sampling tube, temperature interference tube and humidity adjustment tube;

[0017] A temperature sensor and a humidity sensor are installed in the rotating drum, and both the temperature sensor and the humidity sensor are electrically connected to the processing mechanism;

[0018] The control mechanism is electrically connected to the temperature sensor, the humidity sensor and the solenoid valve.

[0019] The temperature and humidity inside the rotating drum are detected by the temperature sensor and the humidity sensor, and the data is transmitted to the processing mechanism. When analyzing the exhaust gas samples, the processing mechanism integrates the temperature and humidity data inside the rotating drum to determine whether the current temperature and humidity are conducive to the current exhaust gas treatment operation. If it is inconsistent with the appropriate treatment environment, the control mechanism controls the operation of the temperature interference tube and the humidity regulating tube, and inputs hot air or moisture into the rotating drum through the temperature interference tube and the humidity regulating tube to adjust the temperature and humidity inside the rotating drum, so that the environment inside the rotating drum is more in line with the environmental requirements for the current exhaust gas treatment, thereby further enhancing the adaptive treatment effect of the exhaust gas emission filtering device, and at the same time can also enhance the exhaust gas treatment efficiency, and complete the rapid and efficient treatment of the exhaust gas.

[0020] As a further supplement to the present application, a plurality of micro-entry curved holes distributed in a honeycomb pattern are provided on the upper surface of the catalytic bed, and the lower ends of the entry curved holes are located above the middle of the catalytic bed. The catalytic bed is a porous ceramic plate and is filled with a high-efficiency catalyst. The catalytic bed is used to catalyze harmful substances in the waste into harmless and low-toxic substances.

[0021] As a further supplement to the present application, the actuator includes a driving assembly for driving the rotating drum to rotate and an electric push rod for driving the adsorption layer to rise and fall vertically. The electric push rod is fixed through the middle of the catalytic bed, and the piston rod of the electric push rod extends downward and the end is fixed to the upper end of the adsorption layer.

[0022] As a further supplement to the present application, the driving assembly includes a motor, the motor is fixed on the support frame, a driving gear is fixed to the output shaft end of the motor, and a driven gear ring meshing with the driving gear is provided on the external fixed sleeve of the rotating drum body;

[0023] The motor and the electric push rod are both electrically connected to the control mechanism.

[0024] The working state of the motor and the electric push rod is controlled by the control mechanism. The rotation direction and speed of the output shaft of the motor can directly affect the rotation direction and speed of the rotating drum, thereby affecting the rotation speed of the catalytic bed and the adsorption layer. When the catalytic bed and the adsorption layer rotate faster, the exhaust gas needs to consume more kinetic energy to pass through the two, that is, the movement speed of the exhaust gas when passing through the catalytic bed and the adsorption layer vertically slows down, thereby making the contact time of the exhaust gas with the catalytic bed and the adsorption layer longer, otherwise the contact time becomes shorter, and the movement of the electric push rod can drive the adsorption layer to slide up and down, thereby adjusting the distance between the adsorption layer and the catalytic bed. When the distance between the adsorption layer and the catalytic bed is large, the exhaust gas passes a longer distance between the adsorption layer and the catalytic bed, thereby making the exhaust gas have a longer reaction time. When the distance between the adsorption layer and the catalytic bed is small, the exhaust gas passes a shorter distance between the adsorption layer and the catalytic bed, thereby shortening the reaction time of the exhaust gas, thereby adjusting the state of the purification unit, achieving different treatment effects on different exhaust gases, and meeting the treatment requirements of different exhaust gases.

[0025] As a further supplement to the present application, the inner wall of the rotating drum body is provided with a plurality of slide grooves distributed along the circumference of the central axis of the rotating drum body, and a plurality of sliders corresponding to the slide grooves are fixed on the periphery of the adsorption layer, and the sliders are slidably connected in the slide grooves.

[0026] As a further supplement to the present application, an anti-fouling cover is fixed to the upper middle end of the catalyst bed, the anti-fouling cover is arranged outside the electric push rod, and the temperature sensor and the humidity sensor are fixedly embedded in the anti-fouling cover.

[0027] As a further supplement to the present application, the connecting member includes a rotating sealing ring, which is fixedly sleeved at the connection between the intake pipe or the exhaust pipe and the rotating drum body, and the lower end of the rotating sealing ring is rotatably connected to the rotating drum body to form a seal.

[0028] In summary, the exhaust gas enters the rotating drum from the intake pipe and is finally discharged from the exhaust pipe. The exhaust gas entering the rotating drum first contacts with and passes through the catalytic bed. At this time, the harmful substances in the exhaust gas are catalyzed, and a chemical reaction is quickly produced and processed into harmless or low-toxic substances; then the exhaust gas passes through the adsorption layer, and the unreacted harmful substances are adsorbed by the adsorption layer; through the dual treatment of the catalytic bed and the adsorption layer, the exhaust gas can form a standard harmless exhaust gas after catalytic reaction and adsorption treatment, achieving a high-efficiency purification effect of the exhaust gas;

[0029] In this process, the exhaust gas entering the rotating drum is sampled by the sampling mechanism, and the sampled gas is transported to the processing mechanism, which analyzes the gas and feeds back the analysis results to the control mechanism. The control mechanism controls the rotation direction and rotation speed of the rotating drum through the actuator, and controls the up and down movement and stop of the adsorption layer at the same time, thereby adjusting the operation state of the purification unit, so that the catalytic bed and the adsorption layer increase or decrease with the rotation speed of the rotating drum, thereby increasing the contact time of the exhaust gas with the catalytic bed or the adsorption layer when passing through the catalytic bed and the adsorption layer, or shortening the contact time, and at the same time, it can also adjust the travel required for the exhaust gas to enter the adsorption layer after passing through the catalytic bed, thereby controlling the reaction time of the exhaust gas;

[0030] In this way, the operating state of the purification unit can be adjusted in real time according to the analysis results of the gas, so that the purification unit can always maintain a high exhaust gas treatment efficiency. At the same time, different treatments can be performed according to different exhaust gases to produce different treatment effects, thereby making the exhaust gas emission filtration device have a wide range of applications and achieving adaptive exhaust gas treatment effects. Compared with the existing technology, it is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is an overall structural diagram of the first implementation method of this application;

[0032] Figure 2 This is a workflow diagram of the first implementation method of this application;

[0033] Figure 3 This is a schematic diagram of the purification mechanism structure of the first embodiment of the present application;

[0034] Figure 4 This is a cross-sectional view of the rotating drum body of the first embodiment of the present application;

[0035] Figure 5 This is a cross-sectional view and a partial enlarged view of the purification unit of the first embodiment of the present application;

[0036] Figure 6 for Figure 4 A magnified view of the structure at A;

[0037] Figure 7 This is a schematic diagram of the structure of the air intake pipe, sampling pipe, temperature interference pipe and humidity adjustment pipe of the first embodiment of the present application;

[0038] Figure 8 This is a schematic diagram of the structure of the anti-fouling cover, temperature sensor and humidity sensor of the first embodiment of the present application.

[0039] Description of the numbers in the figure:

[0040] 100, sampling mechanism; 200, processing mechanism; 300, control mechanism; 400, purification mechanism; 500, execution mechanism;

[0041] 1. Rotating drum; 11. Air inlet pipe; 111. Sampling tube; 112. Temperature interference tube; 113. Humidity regulating tube; 12. Exhaust pipe; 13. Rotating sealing ring; 14. Slide; 2. Purification unit; 21. Catalytic bed; 211. Inlet curved hole; 22. Adsorption layer; 221. Sliding block; 3. Motor; 31. Driving gear; 32. Driven gear ring; 4. Electric push rod; 5. Anti-fouling cover; 6. Temperature sensor; 7. Humidity sensor; 8. Support frame. DETAILED DESCRIPTION

[0042] An implementation method of the present application is described in detail below with reference to the accompanying drawings.

[0043] The first implementation method:

[0044] The present invention provides an exhaust gas emission filtering device, please refer to Figure 1-Figure 4 , comprising a purification mechanism 400, the exhaust gas inlet end of the purification mechanism 400 is connected to a sampling mechanism 100, the output end of the sampling mechanism 100 is connected to a processing mechanism 200, and the output end of the processing mechanism 200 is connected to a control mechanism 300;

[0045] The purification mechanism 400 includes a rotating drum 1 and a purification unit 2;

[0046] The rotating drum body 1 is a cylinder body rotatably mounted on the support frame 8. The upper and lower ends of the rotating drum body 1 are rotatably connected to the intake pipe 11 and the exhaust pipe 12 through connecting pieces. The connecting piece includes a rotating sealing ring 13. The rotating sealing ring 13 is fixedly sleeved at the connection between the intake pipe 11 or the exhaust pipe 12 and the rotating drum body 1. The lower end of the rotating sealing ring 13 is rotatably connected to the rotating drum body 1 to form a seal.

[0047] The purification unit 2 includes a catalyst bed 21 fixed to the rotating drum body 1 and an adsorption layer 22 arranged below the catalyst bed 21. The adsorption layer 22 is installed in the rotating drum body 1 so as to be movable up and down. The adsorption layer 22 is made of an adsorption structure / material rich in micropores of activated carbon or molecular sieve;

[0048] The control mechanism 300 controls the rotation direction and rotation speed of the rotating drum body 1 through the actuator 500 . The control mechanism 300 also controls the up and down movement and stop of the adsorption layer 22 through the actuator 500 .

[0049] Based on the above structure, the exhaust gas enters the rotating drum body 1 through the intake pipe 11 and is finally discharged through the exhaust pipe 12. The exhaust gas entering the rotating drum body 1 first contacts the catalyst bed 21 and passes through the catalyst bed 21. At this time, the harmful substances in the exhaust gas are catalyzed, and a chemical reaction is quickly produced and processed into harmless or low-toxic substances; then the exhaust gas passes through the adsorption layer 22, and the unreacted harmful substances are adsorbed by the adsorption layer 22; through the dual treatment effects of the catalyst bed 21 and the adsorption layer 22, the exhaust gas can form a standard harmless exhaust gas after catalytic reaction and adsorption treatment, thereby achieving a high-efficiency purification effect of the exhaust gas;

[0050] In this process, the exhaust gas entering the rotating drum body 1 is sampled by the sampling mechanism 100, and the sampled gas is transported to the processing mechanism 200. The processing mechanism 200 analyzes the gas and feeds back the analysis results to the control mechanism 300. The control mechanism 300 controls the rotation direction and rotation speed of the rotating drum body 1 through the actuator 500, and simultaneously controls the up and down movement and stop of the adsorption layer 22, thereby adjusting the operation state of the purification unit 2, so that the catalytic bed 21 and the adsorption layer 22 increase or decrease with the rotation speed of the rotating drum body 1, thereby increasing the contact time of the exhaust gas with the catalytic bed 21 or the adsorption layer 22 when passing through the catalytic bed 21 and the adsorption layer 22 or shortening the contact time, and at the same time, it can also adjust the travel required for the exhaust gas to enter the adsorption layer 22 after passing through the catalytic bed 21, thereby controlling the reaction time of the exhaust gas;

[0051] In this way, the operating state of the purification unit 2 can be adjusted in real time according to the analysis results of the gas, so that the purification unit 2 can always maintain a high exhaust gas treatment efficiency. At the same time, different treatments can be performed according to different exhaust gases to produce different treatment effects, thereby making the exhaust gas emission filtering device have a wide range of applications and achieving adaptive exhaust gas treatment effects. Compared with the existing technology, it is more practical.

[0052] Figure 4 It is shown that a plurality of vertically distributed sampling tubes 111 are fixedly connected to one side of the air inlet pipe 11 , and the sampling tubes 111 transport the internal gas samples entering the rotating drum body 1 through the air inlet pipe 11 to the sampling mechanism 100 .

[0053] When the exhaust gas passes through the intake pipe 11, part of the exhaust gas is transported to the sampling mechanism 100 through the multiple sampling tubes 111 on the intake pipe 11, ensuring that the sampling mechanism 100 can effectively and multiplexly sample the exhaust gas entering the rotating drum body 1. Collecting multiple exhaust gas samples can ensure the accuracy of sampling and the accuracy of subsequent analysis results.

[0054] Figure 7 It is shown that a temperature interference tube 112 and a humidity adjustment tube 113 which are arranged vertically are fixed and connected to the other side of the air inlet pipe 11;

[0055] Solenoid valves are installed on the sampling tube 111, the temperature interference tube 112 and the humidity adjustment tube 113;

[0056] A temperature sensor 6 and a humidity sensor 7 are installed in the rotating drum body 1, and both the temperature sensor 6 and the humidity sensor 7 are electrically connected to the processing mechanism 200;

[0057] The control mechanism 300 is electrically connected to the temperature sensor 6 , the humidity sensor 7 and the solenoid valve.

[0058] The temperature and humidity in the rotating drum body 1 are detected by the temperature sensor 6 and the humidity sensor 7, and the data is transmitted to the processing mechanism 200. When performing exhaust gas sample analysis, the processing mechanism 200 integrates the temperature and humidity data in the current rotating drum body 1 to determine whether the current temperature and humidity are conducive to the current exhaust gas treatment operation. If it is inconsistent with the appropriate treatment environment, the control mechanism 300 controls the operation of the temperature interference tube 112 and the humidity adjustment tube 113, and inputs hot air or moisture into the rotating drum body 1 through the temperature interference tube 112 and the humidity adjustment tube 113 to adjust the temperature and humidity in the rotating drum body 1, so that the environment in the rotating drum body 1 is more in line with the environmental requirements for the current exhaust gas treatment, thereby further enhancing the adaptive treatment effect of the exhaust gas emission filtering device, and at the same time can also enhance the exhaust gas treatment efficiency, and complete the rapid and efficient treatment of the exhaust gas.

[0059] Figure 5 It is shown that a plurality of micro curved entrance holes 211 distributed in a honeycomb shape are provided on the upper surface of the catalyst bed 21, and the lower ends of the curved entrance holes 211 are located above the middle of the catalyst bed 21. The catalyst bed 21 is a porous ceramic plate and is filled with a high-efficiency catalyst (such as zeolite, activated carbon, etc.). The catalyst bed 21 is used to catalyze the harmful substances in the waste into harmless and low-toxic substances.

[0060] By setting the entrance curved hole 211, the exhaust gas can enter the catalyst bed 21 more quickly, and at the same time, the contact area between the exhaust gas and the catalyst bed 21 and the high-efficiency catalyst therein is increased, so that the exhaust gas can quickly produce a catalytic reaction, and the harmful substances in the exhaust gas can quickly react into harmless or low-toxic substances, further accelerating the exhaust gas reaction efficiency.

[0061] Figure 1 , Figure 3 and Figure 5 The actuator 500 includes a driving assembly for driving the rotating drum 1 to rotate and an electric push rod 4 for driving the adsorption layer 22 to vertically rise and fall. The electric push rod 4 is fixed and penetrates the middle of the catalytic bed 21. The piston rod of the electric push rod 4 extends downward and the end thereof is fixed to the upper end of the adsorption layer 22.

[0062] The driving assembly includes a motor 3, which is fixed on a support frame 8. A driving gear 31 is fixed to the output shaft end of the motor 3, and a driven gear ring 32 meshing with the driving gear 31 is fixedly sleeved on the outside of the rotating drum body 1.

[0063] The motor 3 and the electric push rod 4 are both electrically connected to the control mechanism 300 .

[0064] The working state of the motor 3 and the electric push rod 4 is controlled by the control mechanism 300. The rotation direction and speed of the output shaft of the motor 3 can directly affect the rotation direction and speed of the rotating drum 1, thereby affecting the rotation speed of the catalyst bed 21 and the adsorption layer 22. When the catalyst bed 21 and the adsorption layer 22 rotate faster, the exhaust gas needs to consume more kinetic energy to pass through the two, that is, the movement speed of the exhaust gas when passing through the catalyst bed 21 and the adsorption layer 22 vertically slows down, thereby making the contact time between the exhaust gas and the catalyst bed 21 and the adsorption layer 22 longer, otherwise the contact time becomes shorter, and the movement of the electric push rod 4 The kinetic energy can drive the adsorption layer 22 to slide up and down, thereby adjusting the distance between the adsorption layer 22 and the catalyst bed 21. When the distance between the adsorption layer 22 and the catalyst bed 21 is large, the exhaust gas passes through a longer distance between the adsorption layer 22 and the catalyst bed 21, thereby making the exhaust gas have a longer reaction time. When the distance between the adsorption layer 22 and the catalyst bed 21 is small, the exhaust gas passes through a shorter distance between the adsorption layer 22 and the catalyst bed 21, thereby shortening the reaction time of the exhaust gas. In this way, the state of the purification unit 2 can be adjusted to achieve different treatment effects on different exhaust gases and meet the treatment requirements of different exhaust gases.

[0065] Figure 4 and Figure 6 It is shown that the inner wall of the rotating drum body 1 is provided with a plurality of slide grooves 14 distributed along the circumference of the central axis of the rotating drum body 1, and a plurality of sliders 221 corresponding to the slide grooves 14 are fixed on the peripheral side of the adsorption layer 22, and the sliders 221 are slidably connected in the slide grooves 14 to ensure that the adsorption layer 22 can stably rotate synchronously with the rotating drum body 1 and the adsorption layer 22, and at the same time, it can also ensure that the adsorption layer 22 can stably slide up and down along the rotating drum body 1.

[0066] Figure 4 and Figure 8 It is shown that an anti-fouling cover 5 is fixed to the upper middle end of the catalytic bed 21, and the anti-fouling cover 5 is arranged on the outside of the electric push rod 4. The temperature sensor 6 and the humidity sensor 7 are fixedly embedded on the anti-fouling cover 5. The anti-fouling cover 5 can protect the upper end of the electric push rod 4 to avoid erosion problems caused by direct contact of the exhaust gas with the electric push rod 4. At the same time, the temperature sensor 6 and the humidity sensor 7 can also be installed and protected to avoid direct impact of the exhaust gas on the temperature sensor 6 and the humidity sensor 7 and cause sensor failure.

[0067] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An exhaust gas emission filtering device, comprising a purification mechanism (400), characterized in that: The exhaust gas inlet end of the purification mechanism (400) is connected to a sampling mechanism (100), the output end of the sampling mechanism (100) is connected to a processing mechanism (200), and the output end of the processing mechanism (200) is connected to a control mechanism (300); The purification mechanism (400) comprises: A rotating drum body (1), the rotating drum body (1) being a cylinder body rotatably mounted on a support frame (8), and the upper and lower ends of the rotating drum body (1) are rotatably connected to an air intake pipe (11) and an exhaust pipe (12) via connecting pieces respectively; A purification unit (2), the purification unit (2) comprising a catalyst bed (21) fixed to the rotating drum (1) and an adsorption layer (22) arranged below the catalyst bed (21), the adsorption layer (22) being installed in the rotating drum (1) so as to be movable up and down; The control mechanism (300) controls the rotation direction and rotation speed of the rotating drum (1) through the actuator (500), and the control mechanism (300) also controls the upward and downward movement and stopping of the adsorption layer (22) through the actuator (500); A plurality of vertically distributed sampling tubes (111) are fixedly connected to one side of the air inlet pipe (11), and the sampling tubes (111) transport internal gas samples entering the rotating drum body (1) through the air inlet pipe (11) to the sampling mechanism (100); A temperature interference tube (112) and a humidity adjustment tube (113) which are distributed vertically are fixed to and communicate with the other side of the air inlet tube (11); The sampling tube (111), the temperature interference tube (112) and the humidity adjustment tube (113) are all installed with solenoid valves; A temperature sensor (6) and a humidity sensor (7) are installed in the rotating drum body (1), and the temperature sensor (6) and the humidity sensor (7) are both electrically connected to the processing mechanism (200); The control mechanism (300) is electrically connected to the temperature sensor (6), the humidity sensor (7) and the solenoid valve; The upper surface of the catalyst bed (21) is provided with a plurality of micro curved entrance holes (211) distributed in a honeycomb shape, the lower ends of the curved entrance holes (211) are located above the middle of the catalyst bed (21), the catalyst bed (21) is a porous ceramic plate and is filled with a high-efficiency catalyst, the catalyst bed (21) is used to catalyze the harmful substances in the waste into harmless and low-toxic substances; The actuator (500) comprises a driving assembly for driving the rotating drum (1) to rotate and an electric push rod (4) for driving the adsorption layer (22) to vertically rise and fall, wherein the electric push rod (4) is fixedly inserted through the middle of the catalytic bed (21), and a piston rod of the electric push rod (4) extends downward and an end portion is fixed to the upper end of the adsorption layer (22); The driving assembly comprises a motor (3), the motor (3) being fixed on a support frame (8), a driving gear (31) being fixed to an output shaft end of the motor (3), and a driven gear ring (32) meshing with the driving gear (31) being provided on an external fixed sleeve of the rotating drum body (1); The motor (3) and the electric push rod (4) are both electrically connected to the control mechanism (300).

2. The exhaust gas emission filtering device according to claim 1, characterized in that: The inner wall of the rotating drum body (1) is provided with a plurality of slide grooves (14) distributed along the circumference of the central axis of the rotating drum body (1), and a plurality of sliding blocks (221) corresponding to the slide grooves (14) are fixed on the circumference of the adsorption layer (22), and the sliding blocks (221) are slidably connected in the slide grooves (14).

3. The exhaust gas emission filtering device according to claim 1, characterized in that: An anti-fouling cover (5) is fixed to the upper middle end of the catalytic bed (21), the anti-fouling cover (5) is arranged outside the electric push rod (4), and the temperature sensor (6) and the humidity sensor (7) are fixedly embedded in the anti-fouling cover (5).

4. The exhaust gas emission filtering device according to claim 1, characterized in that: The connecting member comprises a rotating sealing ring (13), the rotating sealing ring (13) being fixedly sleeved at the connection between the air inlet pipe (11) or the exhaust pipe (12) and the rotating drum body (1), and the lower end of the rotating sealing ring (13) being rotatably connected to the rotating drum body (1) to form a seal.

Images