Waste gas purification device based on plant extracting solution atomization and bionic controller

Abstract

The invention discloses a waste gas purification device based on plant extracting solution atomization and a bionic controller, and relates to the field of waste gas purification treatment, the waste gas purification device comprises a plant extracting solution emitter, a UV photocatalytic lamp assembly, an ultrasonic generator, a low-temperature plasma filtering device and a bionic flow control device; specific components of the plant extracting solution are combined with a UV photoelectrolysis catalysis technology, free radicals generated by oxygenolysis of nitrogen oxides are utilized, a free radical chain reaction is blocked to remove nitrogen dioxide, a deeper and efficient purification effect is provided, the plant extracting solution is converted into tiny ion state particles through an ultrasonic atomization technology, and the purification effect is improved. The waste gas diffusion rate is reduced by combining a low-temperature plasma filtering device, the contact area and the reaction time of the plant extracting solution, impurities and harmful tail gas are greatly increased, and a switch is controlled and the flow is adjusted through a bionic flow control device by utilizing the non-uniform deformation characteristic caused by different thermal expansion coefficients of bimetallic strips; and the resource utilization efficiency and sustainability are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas purification and treatment, and in particular to a waste gas purification device based on plant extract atomization and a bionic controller. Background Art

[0002] With the rapid development of industrialization and urbanization, air pollution has become a global environmental problem. In particular, volatile organic compounds and nitrogen oxides emitted from industrial production and automobile exhaust pose a serious threat to human health and the ecosystem. Although traditional air purification technologies, such as activated carbon adsorption, can alleviate pollution to a certain extent, they are difficult to meet the needs of efficient and sustainable air purification due to their shortcomings such as high wind resistance, high energy consumption and difficulty in regeneration.

[0003] In order to solve these problems, researchers have proposed high-energy atomization technology in recent years. By atomizing the purification medium into particles, the contact area with impurities in the air is increased, thereby improving the purification efficiency. However, the commonly used purification medium is mainly tap water, which has weak adsorption capacity and is difficult to effectively remove particulate matter and organic waste gas in the air. In addition, although high-energy atomization technology can increase the gas-liquid contact area, the contact time between air and liquid is greatly shortened due to the high initial velocity generated during injection, which in turn affects the overall purification effect. At the same time, conventional high-energy atomization technology lacks a suitable switch control mechanism, and cannot achieve automatic control and flow regulation. It is always in a spraying state, resulting in a waste of resources. This challenge needs to be overcome by improving the regulation control technology that can be automatically switched on and off and selecting a purification medium with stronger adsorption capacity and the ability to effectively remove volatile gases, so as to achieve more efficient and sustainable air purification. Summary of the invention

[0004] The purpose of the present invention is to provide an exhaust gas purification device based on plant extract atomization and a bionic controller to solve the problems of low efficiency of purification equipment in the prior art in treating air, especially poor effect in removing nitrogen oxides and organic particulate matter in the air and automobile exhaust, and lack of automatic control and flow regulation functions.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an exhaust gas purification device based on plant extract atomization and bionic controller, comprising an A treatment box, a liquid collecting pool is arranged at the bottom of the inner cavity of the A treatment box, an ultrasonic generating component and a UV photocatalytic component are arranged on the top of the liquid collecting pool, an A air pipe is connected to one side of the upper end of the liquid collecting pool, and one end of the A air pipe is connected to a B treatment box, and a low-temperature plasma filtering device is arranged inside the B treatment box;

[0006] Inside the A treatment box, an atomizing device is provided at the top of the liquid collecting tank. The function of the atomizing device is to spray a mist of plant extract to the end of the A air pipe located on one side of the A treatment box. The plant extract is prepared by turpentine, tea tree oil, xanthan gum and water; the specific production process is as follows: first, 10 ml of xanthan gum is added to deionized water, gently stirred and heated to a mild temperature (about 50-60 ° C) until it is completely dissolved to form a uniform colloid. Then, while stirring, take an equal amount of 40 ml of turpentine and 40 ml of tea tree oil, gradually add them to the dissolved colloid solution to ensure that the components are fully mixed, and then use an ultrasonic instrument to perform ultrasonic treatment on the mixed solution (about 30 minutes) to promote the full mixing of the components and form a stable emulsion. Finally, the mixed solution is cooled to room temperature, transferred to a clean and dry container, sealed and stored to avoid light and high temperature affecting the stability of its components. Before use, gently shake or stir the mixed solution to ensure that the components are evenly distributed.

[0007] A secondary treatment mechanism is arranged inside the A treatment box and close to the A air pipe. The secondary treatment mechanism comprises a partition cabin and positive and negative oxygen ion generators fixedly mounted on the inner wall of the A treatment box. Two UV photocatalytic lamps are arranged on the top of the positive and negative oxygen ion generators. The photocatalytic material thereof is titanium dioxide (TiO2) for electrolyzing water molecules to generate hydroxyl radicals. The two UV photocatalytic lamps can be switched between a first position and a second position. A switching component for driving the UV photocatalytic lamp to switch positions is connected to one side of the UV photocatalytic lamp. When the UV photocatalytic lamp is in the first position, it is located inside the partition cabin; when the UV photocatalytic lamp is in the second position, it is located outside the partition cabin. In addition, a cleaning component for cleaning the surface of the UV photocatalytic lamp in the first position is also arranged inside the partition cabin.

[0008] Furthermore, the atomization device includes a liquid storage tank, an infusion pump, a hydraulic gun and a bionic flow controller. The bionic flow controller is mounted on the nozzle of the hydraulic gun. The input end of the hydraulic gun is connected to a water pipe. The end of the water pipe away from the hydraulic gun is connected to the output end of the infusion pump. The infusion pump is arranged in the liquid storage tank, and the plant extract is stored in the liquid storage tank. One side of the liquid storage tank is fixedly connected to the A processing box.

[0009] Furthermore, the bionic flow controller is made based on the principle that plant guard cells control the opening and closing of stomata. It is made of two memory metal strips with different thermal expansion coefficients welded together. The bionic flow controller uses the difference in thermal expansion coefficients of different memory metal materials to imitate the process of opening and closing the stomata of plant guard cells and breathing, and uses the uneven deformation when heated to realize the temperature-sensitive automatic switch control function. When the surrounding temperature rises, the memory metal strip A with a larger expansion coefficient near the middle position expands more than the memory metal strip B with a smaller expansion coefficient near the two sides, causing the bimetallic strip to compress and bend to both sides, thereby forming a gap in the middle position and opening the nozzle. When the surrounding temperature drops, the two memory metal strips return to their initial state and close the nozzle again.

[0010] Furthermore, the low-temperature plasma filtering device includes a plurality of anode cylinders, the length directions of the plurality of anode cylinders are parallel to the axis of the B gas pipe, the plurality of anode cylinders are evenly arranged inside the B processing box, and one side thereof is connected to the inner wall of the B processing box through an insulator, and a cathode needle is provided on one side of the plurality of anode cylinders, one end of the cathode needle is inserted into the interior of the anode cylinder, and the other end of the cathode needle is connected to the inner wall of the B processing box through an insulator.

[0011] Furthermore, the filter element includes an activated alumina filter, an activated bio-carbon filter and a ceramsite filter. The activated alumina filter, the activated bio-carbon filter and the ceramsite filter can all be detachably installed on the inner wall of the B air pipe.

[0012] Furthermore, the ultrasonic generating component includes a sound sensor, an electric signal converter tube, an ultrasonic generator, a sound wave conduction tube and a sound wave amplifier. The sound sensor, the electric signal converter tube, the ultrasonic generator, the sound wave conduction tube and the sound wave amplifier are all fixedly installed on the A processing box. The sound sensor is electrically connected to the electric signal converter, the electric signal converter is electrically connected to the ultrasonic generator, the ultrasonic generator is electrically connected to the sound wave conduction tube, and the sound wave conduction tube is electrically connected to the sound wave amplifier.

[0013] Furthermore, the switching component includes a mounting frame, two UV photocatalytic lamps are symmetrically mounted on the mounting frame, an opening that can accommodate the mounting frame is opened at the bottom of the partition cabin, one side of the mounting frame is rotatably connected to a movable frame via a rotating shaft, one side of the mounting frame is connected to a driving component that drives it to rotate around the axis of the rotating shaft, and one side of the movable frame is connected to a telescopic driving member A that drives it to move in a direction perpendicular to the bottom surface of the partition cabin.

[0014] Furthermore, the driving assembly includes a gear, which is sleeved on the outside of the rotating shaft, a rack is meshed on one side of the gear, and a B telescopic driving member is connected to the top of the rack to drive it to move along its own length direction.

[0015] Furthermore, the cleaning component includes a slider arranged inside the partition cabin, one side of the slider is slidably connected to the inner wall of the partition cabin, one side of the slider is threadedly connected to a screw, one end of the screw is rotatably connected to the inner wall of the partition cabin, the other end of the screw is connected to a rotating drive member that drives it to rotate around its own axis, and a wiping member is fixedly installed on one side of the slider.

[0016] Furthermore, the wiping member is a sponge.

[0017] Compared with the prior art, the exhaust gas purification device based on plant extract atomization and bionic controller provided by the present invention uses ultrasonic atomization technology to oscillate and convert plant extract into the smallest particles in ion form, greatly increasing the contact area between plant extract and impurities in the air, and utilizing the oxidation effect of specific components in the plant extract to oxidize the free radicals generated by active nitrogen oxides, thereby blocking the free radical chain reaction, reducing potential harm to the environment and organisms, and achieving effective removal of nitrogen dioxide, etc., further improving the air purification effect;

[0018] By combining the three technologies of plant extract atomization ultrasonic atomization, low-temperature plasma filtration and UV photocatalysis, a multi-level purification system is formed, which can effectively remove various pollutants such as organic matter, particulate matter, microorganisms and nitrogen oxides in the exhaust gas, effectively improving the purification effect of the device;

[0019] The low-temperature plasma filtration device is set up to generate charged plasma by using the electric field, and the particulate matter in the exhaust gas is precipitated through chemical reactions such as oxidation and decomposition, while reducing the thermal motion of gas molecules, thereby increasing the liquid-gas reaction time and improving the purification effect;

[0020] By setting up two UV photocatalytic lamps, the hydroxyl radicals generated by their high-energy electrolysis are used to oxidize nitrogen oxides together with α-pinene and 1-p-menene-4-ol in the plant extract, and the positive and negative oxygen ion generators are combined to further promote the photolysis reaction, thereby enhancing the oxidation capacity, so that nitrogen oxides are finally converted into nitrogen oxygen atoms, achieving deep purification;

[0021] By setting up a bionic flow controller, using the characteristics of the bimetallic strips that undergo different deformations when heated, and with the help of the high temperature transmitted by the exhaust gas, the two memory metals compress the surrounding rubber sleeves to produce different degrees of deformation. The A memory metal strip with a larger expansion coefficient near the middle position will expand more than the B memory metal strip with a smaller expansion coefficient near the two sides, causing the bimetallic strip to bend toward the B memory metal strip, and opening the output end of the water pressure gun, so as to realize automatic temperature sensing and flow adjustment, while improving resource utilization efficiency and ensuring the reasonable and effective injection of plant extract;

[0022] By setting up two UV photocatalytic lamps with switching components and cleaning components, automatic cleaning of the surface of the UV photocatalytic lamp is achieved, avoiding the problem of reduced light transmittance and light dispersion due to impurity adhesion, extending the service life of the equipment and ensuring long-term and stable purification effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 A first partial cross-sectional structural schematic diagram provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a side view structure provided by an embodiment of the present invention;

[0026] Figure 3 A second partial cross-sectional structural schematic diagram provided by an embodiment of the present invention;

[0027] Figure 4 The embodiment of the present invention provides Figure 3 A is an enlarged schematic diagram;

[0028] Figure 5 A schematic diagram of the external three-dimensional structure of a processing box A provided in an embodiment of the present invention;

[0029] Figure 6 A third partial cross-sectional structural schematic diagram provided by an embodiment of the present invention;

[0030] Figure 7 A schematic diagram of the combination of a partition cabin, a UV photocatalytic lamp, a switching component and a cleaning component provided in an embodiment of the present invention;

[0031] Figure 8 A schematic diagram of the combination of a UV photocatalytic lamp, a mounting frame, a moving frame and a gear provided in an embodiment of the present invention;

[0032] Fig. 9 A schematic top view of a bionic flow controller structure in a closed state provided by an embodiment of the present invention;

[0033] Fig.10 The embodiment of the present invention provides Fig. 9 The enlarged schematic diagram of point B in FIG.

[0034] Fig.11 A schematic top view of a bionic flow controller in an open state provided by an embodiment of the present invention;

[0035] Fig.12 The embodiment of the present invention provides Fig.11 The enlarged schematic diagram of point C in FIG.

[0036] Fig.13 A cross-sectional schematic diagram of a hydraulic gun and a bionic flow controller in a closed state provided by an embodiment of the present invention;

[0037] Fig.14 The embodiment of the present invention provides Fig.13 The enlarged schematic diagram of D in FIG.

[0038] Fig.15 A cross-sectional view of a hydraulic gun and a bionic flow controller in an open state provided by an embodiment of the present invention;

[0039] Fig.16 The embodiment of the present invention provides Fig.15 The enlarged schematic diagram of point E in FIG.

[0040] Description of reference numerals:

[0041] 1. A treatment box; 2. Liquid collecting tank; 3. Ultrasonic generating assembly; 31. Sound sensor; 32. Electric signal converter; 33. Ultrasonic generator; 34. Sound wave transmission tube; 35. Sound wave amplifier; 4. A air pipe; 5. B treatment box; 6. Low temperature plasma filtering device; 61. Anode cylinder; 62. Cathode needle; 7. B air pipe; 8. Atomizing device; 80. Liquid storage tank; 81. Water pressure gun; 811. Cover; 82. Water pipe; 83. Infusion pump; 84. Bionic flow controller; 841. A memory metal strip with larger thermal expansion coefficient; 842. B memory metal strip with smaller thermal expansion coefficient; 8 43. Rubber sleeve; 9. Secondary treatment mechanism; 91. Separation cabin; 92. Positive and negative oxygen ion generator; 93. UV photocatalytic lamp; 94. Switching assembly; 941. Mounting frame; 942. Moving frame; 943. Driving assembly; 9431. Gear; 9432. Rack; 9433. B telescopic driving member; 944. A telescopic driving member; 95. Cleaning assembly; 951. Slider; 952. Screw; 953. Rotary driving member; 954. Wiping member; 10. Filter element; 101. Activated alumina filter; 102. Activated biochar filter; 103. Ceramic granule filter; 11. Air outlet. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0043] See also Figures 1 to 16, an exhaust gas purification device based on plant extract atomization and bionic controller, comprising an A treatment box 1, an air outlet 11 is arranged on the side of the A treatment box 1, and the treated air is discharged from the air outlet 11, a liquid collecting pool 2 is arranged at the bottom of the inner cavity of the A treatment box 1, an ultrasonic generating component 3 is arranged on the top of the liquid collecting pool 2, an A air pipe 4 is connected to one side of the upper end of the liquid collecting pool 2, and one end of the A air pipe 4 is connected to a B treatment box 5, a low-temperature plasma filtering device 6 is arranged inside the B treatment box 5, and a B air pipe 7 is connected to one side of the B treatment box 5;

[0044] A misting device 8 is provided inside the A treatment box 1 and at the top of the liquid collecting tank 2, which is used to spray misted plant extract to the end of the A air pipe 4 located on one side of the A treatment box 1. The misting device 8 is provided with a bionic flow controller 84. The bionic flow controller 84 adjusts the flow rate by means of the uneven deformation of two different memory metals when heated. When the speed of the car increases, the heat generated by the engine increases, and the exhaust gas emissions also increase accordingly. At this time, more plant extracts need to be sprayed to purify the exhaust gas. When the exhaust gas increases, the heat it carries increases, causing the temperature to rise. After the bimetallic strip senses this high temperature change, it will undergo uneven deformation, among which the A memory metal strip 841 with a larger thermal expansion coefficient near the middle position expands more than the B memory metal strip 842 with a smaller expansion coefficient near the two sides, so that the bimemory metal sheet is squeezed and bent toward the rubber sleeves 843 on both sides, and the nozzle of the water pressure gun 81 is opened to realize automatic temperature sensing and control. Moreover, it can adjust the degree of opening of the nozzle according to the different temperatures transmitted by gases of different concentrations, thereby controlling the flow rate. When the surrounding temperature drops, the two metal sheets return to their original state and the nozzle closes again.

[0045] The liquid delivered by the infusion pump 83 of the atomizing device 8 is a mixed plant extract of turpentine, tea oil, xanthan gum and water, and the concentration is set between one thousandth and one hundredth. Specific production process: First, 10ml xanthan gum is added to deionized water, gently stirred and heated to mild (about 50-60°C), until it is completely dissolved, thereby forming a uniform colloid. Then, while stirring, take an equal amount of 40ml turpentine and 40ml tea oil, gradually add them to the dissolved colloidal solution, and ensure that the components are fully mixed. Afterwards, use an ultrasonicator to ultrasonicate the mixed solution (about 30 minutes) to promote the full mixing of the components and form a stable emulsion. Finally, the mixed solution is cooled to room temperature, then transferred to a clean, dry container, sealed and stored to avoid light and high temperature from affecting the stability of its components. Before use, gently shake or stir the mixed solution to ensure that the components are evenly distributed.

[0046] During the mist spraying process, the thickening property of xanthan gum helps to maintain the stability and uniformity of the droplets. At the same time, it has the function of adsorbing PM particles, can fully contact and adhere to impurities in the exhaust gas, and then settle into the liquid collection tank 2 by gravity, thereby achieving effective removal of particulate matter in the gas. The α-pinene, which accounts for a relatively high proportion in turpentine oil, and the 1-p-menene-4-ol in tea tree oil can provide strong antioxidant and free radical scavenging capabilities. While deodorizing and sterilizing, they can also oxidize the free radicals generated by nitrogen oxides (such as nitrogen dioxide, nitric oxide, etc.) in the exhaust gas, blocking the free radical chain reaction, thereby reducing the potential harm to the environment and organisms, achieving the effect of removing nitrogen dioxide, etc., and improving the air purification efficiency;

[0047] The overall reaction equation of the plant extract when reacting with the waste gas is as follows:

[0048] C 10 H 18 O + 2NO2 → C 10 H 16 O + 2NO + H2O;

[0049] NO2 decomposes to generate NO and free radicals:

[0050] NO2→NO+·O;

[0051] Reactions with free radicals:

[0052] C 10 H 18 O+·O→C 10 H 17 0+H20;

[0053] Further reaction with nitrogen dioxide:

[0054] C 10 H 17 O+NO2→C 10 H 16 O+NO;

[0055] The ultrasonic wave generating component 3 is provided to generate acoustic oscillations, and the plant extract is refined into ionic droplets with a larger specific surface area, and the low-temperature plasma filtering device 6 is provided to slow down the thermal motion of the exhaust gas and reduce the flow velocity, thereby increasing the effective contact between the plant extract and the exhaust gas and prolonging the reaction time;

[0056] Inside the A treatment box 1, a secondary treatment mechanism 9 is arranged on one side near the A gas pipe 4. The mechanism includes a partition cabin 91 and a positive and negative oxygen ion generator 92 fixedly mounted on the inner wall of the A treatment box 1. Two UV photocatalytic lamps 93 are arranged on the top of the positive and negative oxygen ion generator 92. Under the irradiation of the UV photocatalytic lamp 93 made of titanium dioxide, water molecules are electrolyzed into hydrogen radicals. These free radicals react with α-pinene in turpentine and are converted into harmless nitrogen oxide molecules. In addition, the UV photocatalytic method irradiates the positive and negative oxygen ion generator 92 with ultraviolet rays to generate positive and negative oxygen ions (O + , O – ) and stimulate the electrons of the reactant molecules to transition to a high energy state, thereby increasing the reaction activity. These active ions further oxidize and decompose nitric oxide (NO) and nitrogen dioxide (NO2) to generate nitrogen free radicals (·N) and oxygen free radicals (·O), enhancing the reaction efficiency of the plant extract and nitrogen oxides, thereby improving the overall purification effect;

[0057] Meanwhile, the UV photocatalytic lamp 93 can be switched between the first position and the second position. A switching component 94 for driving the UV photocatalytic lamp 93 to switch its position is connected to one side of the UV photocatalytic lamp 93. When the UV photocatalytic lamp 93 is in the first position, it is inside the partition cabin 91. When the UV photocatalytic lamp 93 is in the second position, it is outside the partition cabin 91. A cleaning component 95 for cleaning the surface of the UV photocatalytic lamp 93 in the first position is provided inside the partition cabin 91.

[0058] In an embodiment of the present invention, the low-temperature plasma filtering device 6 includes a plurality of anode cylinders 61, the length direction of the plurality of anode cylinders 61 is parallel to the axis of the B gas pipe 7, the plurality of anode cylinders 61 are evenly arranged inside the B processing box 5, and one side thereof is connected to the inner wall of the B processing box 5 through an insulator, and a cathode needle 62 is provided on one side of the plurality of anode cylinders 61, one end of the cathode needle 62 is inserted into the interior of the anode cylinder 61, and the other end of the cathode needle 62 is connected to the inner wall of the B processing box 5 through an insulator;

[0059] The function of the anode cylinder 61 is to provide positive charge to form the anode required for plasma and ensure the insulation between the anode cylinder 61 and the B treatment box 5 to prevent current leakage. The function of the cathode needle 62 is to provide negative charge to form the cathode required for plasma. When dust removal is performed, a voltage is applied through a high-voltage power supply, the anode cylinder 61 provides positive charge, and the cathode needle 62 provides negative charge to form an electric field. Under the action of the electric field, the electrons in the gas are accelerated and interact with the gas molecules, reducing the diffusion movement of the gas.

[0060] In one embodiment of the present invention, the filter element 10 includes an activated alumina filter sheet 101, an activated biochar filter sheet 102, and a ceramsite filter sheet 103. The activated alumina filter sheet 101, the activated biochar filter sheet 102, and the ceramsite filter sheet 103 can be detachably mounted on the inner wall of the B air pipe 7;

[0061] The activated alumina filter 101 removes organic matter, odor and other pollutants in the gas through redox reaction and chemical adsorption. The activated alumina filter 101 has a large specific surface area and active sites, and can effectively adsorb and catalyze harmful substances in the gas. The activated bio-carbon filter 102 is a filter material that removes organic matter and odor in the gas through biodegradation and adsorption. The microorganisms and biofilms in the activated bio-carbon filter 102 can degrade organic matter. At the same time, the activated carbon has a strong adsorption performance and can effectively remove odor in the gas. The ceramsite filter 103 is a filter material that removes particulate matter and solid particles in the gas through physical adsorption and screening. The surface structure and pores of the ceramsite filter 103 can effectively capture and filter particulate matter in the gas and purify the airflow. Through the combined action of the activated alumina filter 101, the activated bio-carbon filter 102 and the ceramsite filter 103, pollutants such as organic matter, odor and particulate matter in the gas are removed, gas purification and filtration are achieved, and air quality is improved.

[0062] In one embodiment of the present invention, the ultrasonic generating assembly 3 includes a sound sensor 31, an electric signal converter 32, an ultrasonic generator 33, a sound wave conduction tube 34 and a sound wave amplifier 35. The sound sensor 31, the electric signal converter 32, the ultrasonic generator 33, the sound wave conduction tube 34 and the sound wave amplifier 35 are all fixedly installed on the A processing box 1, the sound sensor 31 is electrically connected to the electric signal converter 32, the electric signal converter 32 is electrically connected to the ultrasonic generator 33, the ultrasonic generator 33 is electrically connected to the sound wave conduction tube 34, and the sound wave conduction tube 34 is electrically connected to the sound wave amplifier 35;

[0063] When in use, the device can be installed on a vehicle, and the air can be purified by moving the device with the vehicle. When the sound sensor 31 detects a sound signal in the environment, it converts it into a sound wave signal and transmits it to the electrical signal converter 32. The electrical signal converter 32 converts the sound wave signal into an electrical signal required by the ultrasonic generator 33, and drives the ultrasonic generator 33 to generate an ultrasonic signal. The sound wave conduction tube 34 and the sound wave amplifier 35 ensure the transmission and amplification of the sound wave signal, thereby realizing the generation and propagation of the ultrasonic wave.

[0064] The sound sensor 31 is a key component in the ultrasonic generating assembly 3, and is mainly responsible for converting the input sound into a sound wave signal. It is connected to the electrical signal converter 32 to convert the sound wave into an electrical signal that can be recognized by the ultrasonic generator 33. The ultrasonic generator 33 is a core component of ultrasonic technology. It receives the electrical signal from the electrical signal converter 32, and converts these tiny electrical signals into high-frequency sound waves (ultrasound waves) through the internal frequency conversion transducer (usually a piezoelectric crystal). Subsequently, these ultrasonic waves are directed to the sound wave amplifier 35 through the sound wave conduction tube 34, and the sound wave signal is further amplified and converted into ultrasonic signals of different intensities. In addition, the ultrasonic generator 33 can also adjust the parameters such as the frequency, power and waveform of the ultrasonic wave to meet different application requirements.

[0065] In one embodiment of the present invention, the atomizing device 8 includes a liquid storage tank 80, a hydraulic gun 81 and an infusion pump 83. The input end of the hydraulic gun 81 is connected to a water pipe 82, and the end of the water pipe 82 away from the hydraulic gun 81 is connected to the output end of the infusion pump 83. The infusion pump 83 is arranged in the liquid storage tank 80, and the liquid storage tank 80 stores plant extract inside. One side of the liquid storage tank 80 is fixedly connected to the A processing box 1. The hydraulic gun 81 beats the plant extract into the smallest particles in the form of ions, and uses the dense contact area of ​​the small granular plant extract to fully contact and adhere to impurities in the air, and then falls into the liquid collection tank 2 by gravity.

[0066] At the same time, the flow rate is adjusted by means of a bionic flow controller 84 mounted on the output end of the hydraulic gun 81. The bionic flow controller 84 comprises a rubber sleeve 843 and two sets of bimetallic strips. A cover 811 is provided on the hydraulic gun 81. The cover 811 is detachably mounted on the hydraulic gun 81. The rubber sleeve 843 is adhered to the bottom of the cover 811. The cover 811 is provided with a hollow. Each set of bimetallic strips is composed of a memory metal strip 841 with a larger thermal expansion coefficient and a memory metal strip 842 with a smaller thermal expansion coefficient. The memory metal strip 841 with a larger thermal expansion coefficient and the memory metal strip 842 with a smaller thermal expansion coefficient are tightly welded together to form a bimetallic strip.

[0067] The memory metal strip A 841 with a larger thermal expansion coefficient and the memory metal strip B 842 with a smaller thermal expansion coefficient are welded to the hollow side wall of the cover 811. It realizes the control of the nozzle switch by imitating the working principle of the stomata of plant leaves. When the exhaust gas enters the inside of the A treatment box 1, the temperature inside the A treatment box 1 rises, and the high temperature transmitted causes the bimetallic strip to be heated and deformed unevenly, causing the bimetallic strip to bend toward the side with a smaller thermal expansion coefficient, so that the two metal strips move away from each other, and then open the nozzle to increase the injection flow rate. When there is no exhaust gas passing through, the temperature inside the A treatment box 1 drops to a normal level, the two memory metals return to their original state, and the output end of the water pressure gun 81 is closed. This control mechanism realizes automatic induction, that is, no external power supply or complex control system is required for operation, and it completely relies on the changes in ambient temperature and the different thermophysical properties of the dual memory metals to automatically adjust the flow rate, and improves the level of precise flow control, thereby improving resource utilization efficiency.

[0068] Since the atomizing device 8 breaks the plant extract into the smallest particles in the form of ions, there is a situation where the plant extract particles are attached to the surface of the UV photocatalytic lamp 93. After a long period of use, an impurity layer is easily formed on the surface of the UV photocatalytic lamp 93, resulting in reduced light transmittance and light dispersion of the UV photocatalytic lamp 93, thereby reducing the photo-oxidation catalytic effect on the exhaust gas. For this reason, two UV photocatalytic lamps 93 are provided, and the positions of the two UV photocatalytic lamps 93 are switched by a switching component 94. When the UV photocatalytic lamp 93 is in the first position, the cleaning component 95 cleans its surface to avoid the presence of plant extract particles attached to the surface of the UV photocatalytic lamp 93. After a long period of use, an impurity layer is easily formed on the surface of the UV photocatalytic lamp 93, resulting in reduced light transmittance and light dispersion of the UV photocatalytic lamp 93.

[0069] In one embodiment of the present invention, the switching assembly 94 includes a mounting frame 941, two UV photocatalytic lamps 93 are symmetrically mounted on the mounting frame 941, the UV photocatalytic lamps 93 are fixedly connected to the mounting frame 941, an opening capable of accommodating the mounting frame 941 is provided at the bottom of the partition cabin 91, one side of the mounting frame 941 is rotatably connected to a moving frame 942 via a rotating shaft, one side of the mounting frame 941 is connected to a driving assembly 943 for driving it to rotate around the axis of the rotating shaft, and one side of the moving frame 942 is connected to a telescopic driving member 944 for driving it to move in a direction perpendicular to the bottom surface of the partition cabin 91;

[0070] In one embodiment of the present invention, the A telescopic driving member 944 is a telescopic cylinder, and the A telescopic driving member 944 is fixedly installed on the A processing box 1. The moving end of the A telescopic driving member 944 is fixedly connected to the moving frame 942;

[0071] In one embodiment of the present invention, the driving assembly 943 includes a gear 9431, which is sleeved on the outside of the rotating shaft, and a rack 9432 is meshed on one side of the gear 9431, and a B telescopic driving member 9433 is connected to the top of the rack 9432 to drive it to move along its own length direction;

[0072] In one embodiment of the present invention, the B telescopic driving member 9433 is a telescopic cylinder, the B telescopic driving member 9433 is fixedly mounted on the A processing box 1, and the moving end of the B telescopic driving member 9433 is fixedly connected to the rack 9432;

[0073] The mobile frame 942 is driven to move by the A telescopic driving member 944, and the mobile frame 942 drives the UV photocatalytic lamp 93 to move into or out of the partition cabin 91 through the mounting frame 941, and drives the rack 9432 to move and drive the gear 9431 to rotate through the B telescopic driving member 9433, thereby realizing the switching of the positions of the two UV photocatalytic lamps 93.

[0074] In one embodiment of the present invention, the cleaning assembly 95 includes a slider 951 disposed inside the partition chamber 91, one side of the slider 951 is slidably connected to the inner wall of the partition chamber 91, one side of the slider 951 is threadedly connected to a screw 952, one end of the screw 952 is rotatably connected to the inner wall of the partition chamber 91, and the other end of the screw 952 is connected to a rotating driving member 953 that drives the screw 952 to rotate around its own axis, and one side of the slider 951 is fixedly mounted with a wiping member 954;

[0075] In one embodiment of the present invention, the rotary drive member 953 is a motor, and the rotary drive member 953 is fixedly installed inside the partition cabin 91, and the output shaft end of the rotary drive member 953 is fixedly connected to the screw 952;

[0076] In one embodiment of the present invention, the wiper 954 is a sponge;

[0077] The screw rod 952 is driven to rotate by the rotating driving member 953. Since one side of the slider 951 is slidably connected to the inner wall of the partition chamber 91, the rotation of the screw rod 952 drives the slider 951 to move. The movement of the slider 951 drives the wiping member 954 to move. The wiping member 954 wipes the surface of the UV photocatalytic lamp 93.

[0078] The present application uses ultrasonic atomization technology to oscillate the plant extract into smaller ionic particles, greatly increasing the contact area between the plant extract and impurities in the air, and utilizes the oxidation of 1-p-menene-4-ol and α-pinene in the plant extract to oxidize the free radicals generated by the active nitrogen oxides, thereby blocking the free radical chain reaction, reducing the potential harm to the environment and organisms, and achieving effective removal of nitrogen dioxide, etc.;

[0079] By combining the three technologies of plant extract atomization ultrasonic atomization, low-temperature plasma filtration and UV photocatalysis, a multi-level purification system is formed, which can effectively remove various pollutants such as organic matter, particulate matter, microorganisms and nitrogen oxides in the exhaust gas, effectively improving the purification effect of the device;

[0080] By setting up a low-temperature plasma filter device 6, a charged plasma is generated by using an electric field. Under the acceleration of the electric field, the electrons in the gas interact with the molecules to effectively slow down the diffusion movement of the gas and extend the reaction time for the subsequent process;

[0081] The ultrasonic generator 33 is provided to oscillate the plant extract into tiny ionic particles by ultrasonic vibration, thereby increasing the contact area between the plant extract and the PM particles and nitrogen oxides in the exhaust gas, so that they react fully;

[0082] The UV photocatalytic lamp 93 is set up to generate hydroxyl radicals through electrolysis, which react with α-pinene in turpentine oil to promote the efficient oxidation of nitrogen oxides and convert them into harmless substances. Subsequently, combined with the positive and negative oxygen ion generator 92, under the active action of the electron transition caused by ultraviolet energy and the positive and negative oxygen ion reaction, the nitric oxide (NO) and nitrogen dioxide (NO2) in the exhaust gas are further oxidized and decomposed to generate nitrogen free radicals (·N) and oxygen free radicals (·O), thereby enhancing the reaction efficiency of plant extracts and nitrogen oxides per unit time, thereby achieving a deep and efficient exhaust gas purification effect;

[0083] By setting up the bionic flow controller 84, the characteristic of the bimetallic strips undergoing different deformations when heated is utilized, and the high temperature transmitted by the exhaust gas is used to cause the two memory metals to compress the surrounding rubber and produce different degrees of deformation. The metal strip A with a larger expansion coefficient will expand more than the metal strip B with a smaller expansion coefficient, thereby causing the bi-memory metal strip to bend toward the metal strip B, and the output end of the water pressure gun 81 is opened, thereby realizing automatic temperature sensing and flow adjustment, while improving resource utilization efficiency and ensuring reasonable and effective injection of the plant extract;

[0084] By setting up two UV photocatalytic lamps 93 and equipping them with switching components 94 and cleaning components 95, automatic cleaning of the surface of the UV photocatalytic lamp 93 is achieved, avoiding the problem of reduced light transmittance and light dispersion due to the adhesion of impurities, extending the service life of the equipment, and ensuring long-term and stable purification effects.

[0085] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An exhaust gas purification device based on plant extract atomization and bionic controller, characterized in that: It comprises an A processing box (1), wherein a liquid collecting pool (2) is arranged at the bottom of the inner cavity of the A processing box (1), an ultrasonic generating assembly (3) is arranged at the top of the liquid collecting pool (2), one side of the upper end of the liquid collecting pool (2) is connected to an A air pipe (4), one end of the A air pipe (4) is connected to a B processing box (5), a low-temperature plasma filtering device (6) is arranged inside the B processing box (5), and one side of the B processing box (5) is connected to a B air pipe (7); An atomizing device (8) is provided inside the A processing box (1) and at the top of the liquid collecting tank (2), and the atomizing device (8) is used to spray a mist of plant extract liquid toward the end of the A air pipe (4) located on one side of the A processing box (1); A secondary treatment mechanism (9) is arranged inside the A treatment box (1) and close to the A air pipe (4). The secondary treatment mechanism (9) comprises a partition cabin (91) and a positive and negative oxygen ion generator (92) fixedly mounted on the inner wall of the A treatment box (1). Two UV photocatalytic lamps (93) are arranged on the top of the positive and negative oxygen ion generator (92). The UV photocatalytic lamps (93) can be switched between a first position and a second position. A switching component (94) for driving the UV photocatalytic lamp (93) to switch its position is connected to one side of the UV photocatalytic lamp (93). When the UV photocatalytic lamp (93) is in the first position, it is inside the partition cabin (91). When the UV photocatalytic lamp (93) is in the second position, it is outside the partition cabin (91). A cleaning component (95) for cleaning the surface of the UV photocatalytic lamp (93) in the first position is arranged inside the partition cabin (91); An air outlet (11) is provided on the side of the A processing box (1).

2. The exhaust gas purification device based on plant extract atomization and bionic controller according to claim 1 is characterized in that: The low-temperature plasma filtering device (6) comprises a plurality of anode cylinders (61), the length direction of the plurality of anode cylinders (61) is parallel to the axis of the B gas pipe (7), the plurality of anode cylinders (61) are evenly arranged inside the B processing box (5), and one side of the plurality of anode cylinders (61) is connected to the inner wall of the B processing box (5) via an insulator, and a cathode needle (62) is provided on one side of the plurality of anode cylinders (61), one end of the cathode needle (62) is inserted into the inside of the anode cylinder (61), and the other end of the cathode needle (62) is connected to the inner wall of the B processing box (5) via an insulator.

3. The exhaust gas purification device based on plant extract atomization and bionic controller according to claim 1 is characterized in that: The filter element (10) comprises an activated alumina filter sheet (101), an activated biochar filter sheet (102) and a ceramsite filter sheet (103); the activated alumina filter sheet (101), the activated biochar filter sheet (102) and the ceramsite filter sheet (103) are all detachably mounted on the inner wall of the B air pipe (7).

4. The exhaust gas purification device based on plant extract atomization and bionic controller according to claim 1, characterized in that: The ultrasonic wave generating assembly (3) comprises a sound sensor (31), an electric signal converter (32), an ultrasonic generator (33), a sound wave conduction tube (34) and a sound wave amplifier (35). The sound sensor (31), the electric signal converter (32), the ultrasonic generator (33), the sound wave conduction tube (34) and the sound wave amplifier (35) are all fixedly mounted on the A processing box (1). The sound sensor (31) is electrically connected to the electric signal converter (32), the electric signal converter (32) is electrically connected to the ultrasonic generator (33), the ultrasonic generator (33) is electrically connected to the sound wave conduction tube (34), and the sound wave conduction tube (34) is electrically connected to the sound wave amplifier (35).

5. The exhaust gas purification device based on plant extract atomization and bionic controller according to claim 1 is characterized in that: The atomizing device (8) comprises a liquid storage tank (80), a hydraulic gun (81), a water pipe (82), an infusion pump (83) and a bionic flow controller (84); the output end of the hydraulic gun (81) is sleeved with the bionic flow controller (84); the input end is connected to the water pipe (82); one end of the water pipe (82) away from the hydraulic gun (81) is connected to the output end of the infusion pump (83); the infusion pump (83) is arranged in the liquid storage tank (80); the liquid storage tank (80) stores plant extract; one side of the liquid storage tank (80) is fixedly connected to the A treatment box (1).

6. The exhaust gas purification device based on plant extract atomization and bionic controller according to claim 1, characterized in that: The bionic flow controller (84) comprises a memory metal strip (841) with a larger thermal expansion coefficient, a memory metal strip (842) with a smaller thermal expansion coefficient, and a rubber sleeve (843). The rubber sleeve (843) is nested at the output port of the hydraulic gun (81), and covers the two memory metal strips (841) with a larger thermal expansion coefficient and the two memory metal strips (842) with a smaller thermal expansion coefficient. The memory metal strip (841) with a larger thermal expansion coefficient is wider and closer to the middle, while the memory metal strip (842) with a smaller thermal expansion coefficient is narrower and is located on both sides of the two memory metal strips. Both ends of the four metal strips are welded to the inner wall of the output end of the hydraulic gun (81) to fix their positions.

7. The exhaust gas purification device based on plant extract atomization and bionic controller according to claim 1, characterized in that: The switching assembly (94) comprises a mounting frame (941), two UV photocatalytic lamps (93) are symmetrically mounted on the mounting frame (941), an opening capable of accommodating the mounting frame (941) is provided at the bottom of the partition cabin (91), one side of the mounting frame (941) is rotatably connected to a moving frame (942) via a rotating shaft, one side of the mounting frame (941) is connected to a driving assembly (943) for driving the mounting frame (941) to rotate around the axis of the rotating shaft, and one side of the moving frame (942) is connected to a telescopic driving member (944) for driving the moving frame (942) to move in a direction perpendicular to the bottom surface of the partition cabin (91).

8. The exhaust gas purification device based on plant extract atomization and bionic controller according to claim 6, characterized in that: The driving assembly (943) includes a gear (9431) which is sleeved on the outside of the rotating shaft. A rack (9432) is meshed on one side of the gear (9431). The top of the rack (9432) is connected to a B telescopic driving member (9433) which drives the rack (9432 to move along its own length direction.

9. The exhaust gas purification device based on plant extract atomization and bionic controller according to claim 1, characterized in that: The cleaning assembly (95) comprises a slider (951) disposed inside the partition chamber (91), one side of the slider (951) being slidably connected to the inner wall of the partition chamber (91), one side of the slider (951) being threadedly connected to a screw rod (952), one end of the screw rod (952) being rotatably connected to the inner wall of the partition chamber (91), the other end of the screw rod (952) being connected to a rotating driving member (953) for driving the screw rod (952) to rotate around its own axis, and a wiping member (954) being fixedly mounted on one side of the slider (951).

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