Environment-friendly waste gas treatment device and method

Abstract

This invention provides an environmentally friendly waste gas treatment device and method, relating to the field of waste gas treatment. The environmentally friendly waste gas treatment device includes a purification tank, a large particle filter with self-cleaning function for filtering large particles, and a water-washing filter for adsorbing and filtering fine particulate impurities. The bottom of the purification tank is equipped with support legs. This environmentally friendly waste gas treatment device effectively improves filtration efficiency through a three-layer filtration method. The water-washing filter is cleaned by washing during filtration. When the filter cartridge uses filter holes, sponge pads are placed inside the filter holes. The pores on the surface of the sponge pads adsorb smaller dust impurities, further improving the filtration effect of the filter cartridge. Furthermore, the sponge pads are kept moist during filtration, further enhancing the adsorption and filtration effect of smaller dust impurities.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment, specifically to an environmentally friendly waste gas treatment device and method. Background Technology

[0002] Waste gas treatment, also known as waste gas purification or waste gas treatment, mainly refers to the treatment of industrial waste gases generated in industrial sites (such as factories and workshops). These waste gases may include particulate matter, flue gas, odorous gases, toxic and harmful gases, etc. The purpose of waste gas treatment is to pre-treat waste gases before they are discharged into the environment to meet national standards for waste gas emissions.

[0003] The utility model patent with application number CN202220079965.4 relates to the field of waste gas treatment equipment technology. It includes a housing and a filter plate that slides between the inner and outer sides of the housing. The housing has a rectangular cross-section. An inlet pipe and an outlet pipe, arranged perpendicular to the filter plate, are fixedly installed on the opposite side walls of the housing. It also includes a cleaning mechanism to remove impurities attached to the filter plate into a collection part to ensure that the filter plate is not blocked. Once the collection part is full, it can be removed from the housing and emptied. The operation is simple and convenient. It can filter waste gas and clean the filter plate at the same time without removing the filter plate, thereby improving the filtration efficiency.

[0004] However, in actual use, using only a single filter plate for filtration can easily lead to clogging. Furthermore, finer particles cannot be effectively filtered, and the small filter pores are easily clogged by impurities. Simply cleaning the filter plate by sweeping is ineffective, and the sweeping process can also cause fine impurities to penetrate the filter pores, affecting the filtration quality. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides an environmentally friendly waste gas treatment device and method, which solves the problems of poor filtration effect, easy clogging, and impurities easily passing through the filter plate during cleaning, thus affecting filtration quality.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: an environmentally friendly waste gas treatment device, comprising a purification tank, a large particle filter for filtering large particles and having a self-cleaning function, and a water-washing filter for adsorbing and filtering fine particulate impurities. The bottom of the purification tank is equipped with support legs. An inlet pipe for injecting the gas to be purified into the purification tank is installed on the left end face of the purification tank. A sealing cap is threaded onto the right side of the purification tank, and an exhaust pipe for discharging the purified gas is installed on the side of the sealing cap. An installation frame is installed inside the purification tank, and the inner side of the installation frame is provided with a device for preliminary gas purification and automatic discharge of filtered particles. The purification tank contains a large particle filtration device. A partition mounting plate is installed on the inner wall of the purification tank, located on the right side of the mounting frame. A water-washing filter device using water for auxiliary filtration is located on the left side of the partition mounting plate. A flow pipe for adding and draining water to the water-washing filter device is installed at the bottom of the purification tank. A valve is installed inside the flow pipe. A drive motor for operating the water-washing filter device and the large particle filtration device is installed on the right side of the partition mounting plate. A notch is provided on the upper side of the partition mounting plate to allow the air filtered by the water-washing filter device to be discharged to the right. A positioning bracket is installed on the inner wall of the purification tank, located on the right side of the partition mounting plate. An activated carbon filter plate for air adsorption filtration is engaged inside the positioning bracket.

[0009] Preferably, the large particle filtration device includes a filter plate, an impurity collection cylinder, an impurity collection notch, a cleaning scraper, a drive gear ring, a slag discharge pipe, a connecting spherical shell, and a transmission rod. The filter plate is installed inside the mounting frame. The impurity collection cylinder is rotatably installed inside the filter plate via a bearing. The impurity collection notch is located on the outer wall of the impurity collection cylinder and on the left side of the filter plate. The cleaning scraper is located on the left side of the filter plate, with its inner end extending into the impurity collection cylinder through the impurity collection notch and connecting to the impurity collection cylinder. The drive gear ring is rotatably installed on the left side wall of the filter plate via a bearing. The outer end of the cleaning scraper is installed on the inner wall of the drive gear ring. The connecting spherical shell is installed on the right outer wall of the impurity collection cylinder via a bearing. The slag discharge pipe is placed at the bottom of the connecting spherical shell, with its bottom end penetrating the purification tank and extending to the outside of the purification tank. A collection sealing cap is installed at the bottom end of the slag discharge pipe. The transmission rod is rotatably installed on the mounting frame via a bearing. The left end of the transmission rod extends to the outside of the drive gear ring, and a gear is installed at the left end of the transmission rod, meshing with the drive gear ring.

[0010] Preferably, the water washing and filtration device includes a filter cylinder, a mounting ring seat, a positioning bracket, a drive shaft, a cleaning brush roller, a power gear, a movable chamber, a movable clamping plate, and a positioning pin. The filter cylinder is rotatably mounted to the left side wall of the partition mounting plate via a bearing. The mounting ring seat is mounted to the left end of the filter cylinder. A support ring seat is rotatably mounted to the outer wall of the mounting ring seat via a bearing. The outer wall of the support ring seat is mounted to the inner wall of the purification tank. The positioning bracket is mounted to the inner wall of the purification tank and located to the left of the support ring seat. The drive shaft is mounted to the left side wall of the partition mounting plate via a bearing and located directly opposite the drive motor. The right end of the drive shaft passes through the partition mounting plate and connects to the drive motor. The output end is installed, the left end of the drive shaft is rotatably mounted to the right side wall of the positioning bracket via a bearing, the cleaning brush roller is mounted to the outer wall of the drive shaft and located inside the filter cylinder, the power gear is mounted to the outer wall of the drive shaft and located inside the mounting ring seat, the right end of the transmission rod is rotatably mounted to the positioning bracket via a bearing, the right end of the transmission rod is equipped with a gear, the gear meshes with the power gear and the teeth on the inner wall of the mounting ring seat, the movable cavity is opened inside the filter cylinder, the movable plate is movably inserted into the positioning pin, the end of the movable plate is mounted to the inner wall of the movable cavity, and the movable plate is movably engaged inside the movable cavity via the positioning pin.

[0011] Preferably, the right end of the air inlet pipe extends into the interior of the purification tank, and a diffuser plate is installed on the inner wall of the purification tank by a bracket. The diffuser plate is made of multiple concentric trumpet-shaped retaining rings.

[0012] Preferably, the cleaning scraper is vortex-shaped, and the cross-section of the cleaning scraper is a horizontal "J" shape, with the right end of the cleaning scraper cross-section inclined towards the middle.

[0013] Preferably, the diameter of the left end of the impurity collection cylinder is smaller than the diameter of the right end, and the connecting spherical shell is spherically fitted onto the outside of the right end of the impurity collection cylinder.

[0014] Preferably, the diameter of the left end of the filter cylinder is larger than the diameter of the right end, the diameter of the right end of the cleaning brush roller is smaller than the diameter of the left end, and the outer wall of the cleaning brush roller is provided with a brush.

[0015] Preferably, a cleaning liquid is injected between the partition mounting plate and the mounting frame, and the level of the cleaning liquid submerges the drive shaft.

[0016] Preferably, a sponge pad is installed on the surface of the movable plate away from the axis of the filter cylinder.

[0017] A method for treating waste gas using an environmentally friendly waste gas treatment device includes the following steps:

[0018] Step 1: Connect the bottom of the circulating water pipe to the pressurized water injection pipe, then open the valve inside the circulating water pipe and inject the cleaning solution into the purification tank through the pressurized water injection pipe. After the cleaning solution is injected into the purification tank, it will submerge the lower part of the filter cartridge and the lower part of the cleaning brush roller.

[0019] Step 2: Install the exhaust gas pipe and the left end of the inlet pipe. The exhaust gas is discharged into the interior of the purification tank through the inlet pipe. After entering the purification tank, the exhaust gas diffuses under the obstruction of the diffuser plate and then comes into contact with the filter plate. The filter plate filters out large particulate impurities in the exhaust gas. At the same time, the cleaning scraper cleans the surface of the filter plate to prevent impurities from accumulating and causing blockage and affecting the filtration efficiency.

[0020] Step 3: The gas filtered by the filter plate flows to the right to the inside of the filter cylinder, and then diffuses outward along the inside of the filter cylinder. The exhaust gas is filtered through the filter holes on the surface of the filter cylinder. When the exhaust gas enters the filter holes on the surface of the filter cylinder, the filter cylinder rotates, causing the exhaust gas inside the filter holes to undergo relative displacement. This allows the exhaust gas to come into contact with the moist sponge pads set inside the filter holes. The moist sponge pads adsorb and purify the exhaust gas again, removing tiny impurities inside the exhaust gas. When the filter cylinder rotates to the lower position, it will automatically clean the surface of the filter cylinder and the sponge pads inside the filter cylinder, so that the filter cylinder can maintain good filtration efficiency and filtration effect.

[0021] Step 4: The gas diffused from the outside of the filter cartridge flows to the right and through the upper notch of the partition plate to the top of the activated carbon filter plate. Then, the exhaust gas passes downward through the activated carbon filter plate and is adsorbed by the activated carbon inside the filter plate. After multiple filtrations, the exhaust gas contains fewer impurities, which can improve the service life of the activated carbon inside the filter plate and improve the adsorption effect of the activated carbon on the exhaust gas after multiple filtrations. The gas after activated carbon adsorption treatment is discharged to the right through the exhaust pipe.

[0022] Step 5: After the exhaust gas treatment is completed, open the valve inside the water pipe to discharge the cleaning solution used to clean the filter cartridge downwards. After discharge, inject clean water into the purification tank again through the water pipe for cleaning and discharge to keep the filter cartridge clean.

[0023] (III) Beneficial Effects

[0024] This invention provides an environmentally friendly waste gas treatment device and method. It has the following beneficial effects:

[0025] 1. The three-layer filtration method can effectively improve the filtration efficiency. In addition, the large particle filter and the water washing filter have a self-cleaning function during filtration to prevent clogging and further improve the filtration quality.

[0026] 2. The water washing filter uses water washing to clean the filter during the filtration process. The water washing area and the exhaust gas filtration area are not in the same location. The cleaning work is carried out directly in the filtration area to prevent fine dust on the surface of the filter cartridge from spreading to the outside of the filter cartridge, which would lead to a decrease in cleaning and filtration quality.

[0027] 3. When the filter cartridge uses filter holes for filtration, a sponge pad is placed inside the filter holes. The pores on the surface of the sponge pad will adsorb smaller dust impurities, thereby further improving the filtration effect of the filter cartridge. In addition, the sponge pad is in a wet state during the filtration process, which further enhances the adsorption and filtration effect of smaller dust impurities.

[0028] 4. When the filter cartridge moves the movable plate to the lower position, the movable plate is positioned above the sponge pad. The movable plate presses down on the sponge pad, squeezing out the water inside. Simultaneously, the discharged water also removes impurities from the surface of the sponge pad, improving the cleaning quality of both the filter cartridge and the sponge pad. When the filter cartridge moves the movable plate to the upper position, the sponge pad is positioned above the movable plate. Under its own weight, the movable plate adheres tightly to the inner surface of the movable cavity. At this point, the sponge pad is not fully expanded under pressure, thus connecting the movable plate to the outer holes of the filter cartridge. When exhaust gas passes through the holes on the surface of the filter cartridge, the filter cartridge rotates, causing the exhaust gas to deflect and contact the sponge pad. Through the gaps on the surface of the sponge pad and the presence of water, tiny impurities in the exhaust gas are adsorbed and filtered, thereby improving the filtration quality of the filter cartridge. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the left side of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure on the right side of the present invention;

[0031] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the present invention;

[0032] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle;

[0033] Figure 5 This is a partial structural diagram of the large particle filtration device of the present invention;

[0034] Figure 6 This is a schematic diagram of the slag discharge pipe and the connected spherical shell structure of the present invention;

[0035] Figure 7 This is a schematic diagram of the cleaning brush roller structure of the present invention;

[0036] Figure 8 This is a schematic diagram of the filter cartridge and mounting ring structure of the present invention;

[0037] Figure 9 For the present invention Figure 8 Enlarged view of the structure at point B in the middle;

[0038] Figure 10 This is a schematic diagram of the movable card plate mounting sponge pad and the opening structure of the present invention;

[0039] The components include: 1. Purification tank; 11. Flowing water pipe; 2. Supporting legs; 3. Air inlet pipe; 31. Diffuser plate; 4. Sealing cover; 41. Exhaust pipe; 5. Mounting frame; 6. Large particle filtration device; 61. Filter plate; 62. Impurity collection cylinder; 63. Impurity collection notch; 64. Cleaning scraper; 65. Drive gear ring; 66. Slag discharge pipe; 67. Connecting spherical shell; 68. Transmission rod; 7. Water washing filtration device; 71. Filter cylinder; 72. Mounting ring seat; 73. Positioning bracket; 74. Drive shaft; 75. Cleaning brush roller; 76. Power gear; 77. Movable cavity; 78. Movable clamping plate; 79. Positioning clamping post; 8. Separating mounting plate; 81. Drive motor; 9. Activated carbon filter plate; 91. Positioning clamping seat. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0041] Please see Figures 1-10This invention provides a technical solution: an environmentally friendly waste gas treatment device, comprising a purification tank 1, a large particle filter 6 for filtering large particles and having a self-cleaning function, and a water-washing filter 7 for adsorbing and filtering fine particulate impurities. A support bracket 2 is installed at the bottom of the purification tank 1. An inlet pipe 3 is installed on the left end face of the purification tank 1 for injecting the gas to be purified into the purification tank 1. A sealing cover 4 is threaded onto the right side of the purification tank 1, and an exhaust pipe 41 is installed on the side of the sealing cover 4 for discharging the purified gas. An installation frame 5 is installed inside the purification tank 1, and the large particle filter 6 is installed on the inner side of the installation frame 5 for preliminary gas purification and automatic discharge of the filtered particles. A partition mounting plate 8 is installed on the inner wall of the purification tank 1 and on the right side of the mounting frame 5. A water washing filter 7 for auxiliary filtration using water is provided on the left side of the partition mounting plate 8. A flow pipe 11 for adding and draining water to the water washing filter 7 is installed at the bottom of the purification tank 1. A valve is installed inside the flow pipe 11. A drive motor 81 for driving the water washing filter 7 and the large particle filter 6 is installed on the right side wall of the partition mounting plate 8. A notch is opened on the upper side of the partition mounting plate 8 to allow the air filtered by the water washing filter 7 to be discharged to the right. A positioning bracket 91 is installed on the inner wall of the purification tank 1 and on the right side of the partition mounting plate 8. An activated carbon filter plate 9 for adsorbing and filtering air is engaged on the inner side of the positioning bracket 91.

[0042] In this embodiment, the large particle filtration device 6 includes a filter plate 61, an impurity collection cylinder 62, an impurity collection notch 63, a cleaning scraper 64, a drive gear ring 65, a slag discharge pipe 66, a connecting spherical shell 67, and a transmission rod 68. The filter plate 61 is installed inside the mounting frame 5. The impurity collection cylinder 62 is rotatably installed inside the filter plate 61 via bearings. The impurity collection notch 63 is formed on the outer wall of the impurity collection cylinder 62 and located on the left side of the filter plate 61. The cleaning scraper 64 is located on the left side of the filter plate 61. The inner end of the cleaning scraper 64 extends into the impurity collection cylinder 62 through the impurity collection notch 63 and interacts with the impurities. The impurity collection cylinder 62 is connected, the drive gear ring 65 is rotatably installed on the left side wall of the filter plate 61 via a bearing, the outer end of the cleaning scraper 64 is installed on the inner wall of the drive gear ring 65, the connecting spherical shell 67 is installed on the outer right wall of the impurity collection cylinder 62 via a bearing, the slag discharge pipe 66 is pressed at the bottom of the connecting spherical shell 67, the bottom end of the slag discharge pipe 66 passes through the purification tank 1 and extends to the outside of the purification tank 1, a collection sealing cover is installed at the bottom end of the slag discharge pipe 66, the transmission rod 68 is rotatably installed on the mounting frame 5 via a bearing, the left end of the transmission rod 68 extends to the outside of the drive gear ring 65, a gear is installed at the left end of the transmission rod 68, and the gear meshes with the drive gear ring 65.

[0043] For details, see attached. Figure 3-6As shown, the large particle filter 6 filters large particulate impurities in the exhaust gas to prevent them from affecting the filtration efficiency of subsequent filtration. At the same time, the large particle filter 6 automatically collects the filtered impurities, which are then impacted inside the slag discharge pipe 66 to prevent blockage.

[0044] In this embodiment, the water washing and filtration device 7 includes a filter cylinder 71, a mounting ring seat 72, a positioning bracket 73, a drive shaft 74, a cleaning brush roller 75, a power gear 76, a movable cavity 77, a movable clamping plate 78, and a positioning clamping post 79. The filter cylinder 71 is rotatably mounted to the left side wall of the partition mounting plate 8 via a bearing. The mounting ring seat 72 is mounted to the left end of the filter cylinder 71. A support ring seat is rotatably mounted to the outer wall of the mounting ring seat 72 via a bearing. The outer wall of the support ring seat is mounted to the inner wall of the purification tank 1. The positioning bracket 73 is mounted to the inner wall of the purification tank 1 and located to the left of the support ring seat. The drive shaft 74 is mounted to the left side wall of the partition mounting plate 8 via a bearing and located directly opposite the drive motor 81. The right end of the drive shaft 74 passes through the partition mounting plate 8 and connects to the drive motor. The output end of 81 is installed. The left end of the drive shaft 74 is rotatably installed on the right side wall of the positioning bracket 73 via a bearing. The cleaning brush roller 75 is installed on the outer wall of the drive shaft 74 and located inside the filter cylinder 71. The power gear 76 is installed on the outer wall of the drive shaft 74 and located inside the mounting ring seat 72. The outer wall of the right end of the transmission rod 68 is rotatably installed on the positioning bracket 73 via a bearing. A gear is installed on the right end of the transmission rod 68. The gear meshes with the gear head of the power gear 76 and the inner wall of the mounting ring seat 72. The movable cavity 77 is opened inside the filter cylinder 71. The movable plate 78 is movably inserted into the positioning pin 79. The end of the movable plate 78 is installed on the inner wall of the movable cavity 77. The movable plate 78 is movably engaged inside the movable cavity 77 via the positioning pin 79.

[0045] For details, see attached. Figure 3 , 4 7, 8 and appendix Figure 9 As shown, the waste gas after preliminary filtration is filtered a second time by the water washing filter device 7. During filtration, the filter cylinder 71 is cleaned by soaking in the cleaning solution and rotating the cleaning brush roller 75 to prevent clogging and prevent dust generation. When air passes through the holes of the sponge pad during filtration, it comes into contact with the water-absorbing sponge. The porous structure of the sponge surface, together with the cleaning solution, adsorbs fine dust, further improving the filtration effect.

[0046] In this embodiment, the right end of the air inlet pipe 3 extends into the interior of the purification tank 1. The inner wall of the purification tank 1 is equipped with a diffuser plate 31 by a bracket. The diffuser plate 31 is made of multiple concentric trumpet-shaped retaining rings.

[0047] For details, see attached. Figure 3As shown, after the exhaust gas passes through the air inlet pipe 3, it comes into contact with the diffuser plate 31. The exhaust gas is blocked and diffused to the outside by multiple horn-shaped baffle rings, so that the exhaust gas can fully contact the large particle filter device 6 for filtration.

[0048] In this embodiment, the cleaning scraper 64 is generally vortex-shaped, and the cross-section of the cleaning scraper 64 is a horizontal "J" shape, with the right end of the cross-section of the cleaning scraper 64 inclined towards the middle.

[0049] For details, see attached. Figure 5 As shown, the cleaning scraper 64 rotates to scrape and clean the impurities filtered from the surface of the filter plate 61 towards the center. The inclined design causes the impurities swept off the lower side to roll to the left along the surface of the cleaning scraper 64 and enter the groove on the left side, thereby effectively preventing impurities from sticking to the surface of the filter plate 61 and affecting the filtration efficiency of the filter plate 61.

[0050] In this embodiment, the diameter of the left end of the impurity collection cylinder 62 is smaller than the diameter of the right end, and the connecting spherical shell 67 is spherically fitted onto the outside of the right end of the impurity collection cylinder 62.

[0051] For details, see attached. Figure 5 and attached Figure 6 As shown, after entering the impurity collection cylinder 62, the impurities slide to the right along the inclined surface at the lower side of the impurity collection cylinder 62, and finally slide into the interior of the connecting spherical shell 67. After entering the interior of the connecting spherical shell 67, the impurities move downward and finally enter the interior of the slag discharge pipe 66 for storage.

[0052] In this embodiment, the diameter of the left end of the filter cylinder 71 is larger than the diameter of the right end, the diameter of the right end of the cleaning brush roller 75 is smaller than the diameter of the left end, and the outer wall of the cleaning brush roller 75 is provided with a brush.

[0053] For details, see attached. Figure 3 and, 7 and appendix Figure 8 As shown, during the cleaning process, the impurities washed inside the filter cylinder 71 will automatically be discharged to the left, preventing impurities from accumulating inside the filter cylinder 71 and causing blockage. The cleaning brush roller 75 can fit against the lower inner surface of the filter cylinder 71, and then the cleaning brush roller 75 drives the brush to rotate, extending from the inside of the filter cylinder 71 into the filter hole to perform brushing work, thus improving the cleaning effect.

[0054] In this embodiment, a cleaning liquid is injected between the partition mounting plate 8 and the mounting frame 5, and the liquid level of the cleaning liquid submerges the drive shaft 74.

[0055] For details, see attached. Figure 3 As shown, by immersing the filter cartridge 71 and the cleaning brush roller 75 in the cleaning liquid, dust is not generated during the cleaning process, thus preventing the cleaning from affecting the filtration quality.

[0056] In this embodiment, a sponge pad is installed on the surface of the movable card plate 78 away from the axis of the filter cylinder 71.

[0057] For details, see attached. Figure 9 and attached Figure 10 As shown, the movable plate 78 can move inward and outward within the movable cavity 77 under the restriction of the positioning pin 79. When the filter cylinder 71 moves the movable plate 78 to the lower position, the movable plate 78 is positioned above the sponge pad. The movable plate 78 presses the sponge pad, squeezing out the water inside the sponge pad. At the same time, the discharged water also squeezes out and cleans the impurities on the surface of the sponge pad, improving the cleaning quality of the filter cylinder 71 and the sponge pad. When the filter cylinder 71 moves the movable plate 78 to the upper position, the sponge pad... The sponge pad is located above the movable plate 78. Under its own weight, the movable plate 78 is pressed tightly against the inner surface of the movable cavity 77. At this time, the sponge pad will not be fully expanded under pressure, thus connecting the movable plate 78 with the outer hole of the filter cartridge 71. When the exhaust gas passes through the hole on the surface of the filter cartridge 71, the filter cartridge 71 will rotate, causing the exhaust gas passing through the hole to deflect and contact the sponge pad. Through the gaps on the surface of the sponge pad and the cooperation of water, the tiny impurities in the exhaust gas are adsorbed and filtered, thereby improving the filtration quality of the exhaust gas by the filter cartridge 71.

[0058] A method for treating waste gas using an environmentally friendly waste gas treatment device includes the following steps:

[0059] Step 1: Connect the bottom end of the water pipe 11 to the pressurized water injection pipe, then open the valve inside the water pipe 11 and inject the cleaning solution into the purification tank 1 through the pressurized water injection pipe. After the cleaning solution is injected into the purification tank 1, it will submerge the lower part of the filter cylinder 71 and the lower part of the cleaning brush roller 75.

[0060] Step 2: Install the exhaust gas pipe and the left end of the inlet pipe 3. The exhaust gas is discharged into the interior of the purification tank 1 through the inlet pipe 3. After entering the interior of the purification tank 1, the exhaust gas diffuses under the obstruction of the diffuser plate 31 and then comes into contact with the filter plate 61. The filter plate 61 filters out large particulate impurities in the exhaust gas. At the same time, the cleaning scraper 64 cleans the surface of the filter plate 61 to prevent impurities from accumulating and causing blockage and affecting the filtration efficiency.

[0061] Step 3: The gas filtered by the filter plate 61 flows to the right to the inside of the filter cylinder 71, and then diffuses outward along the inside of the filter cylinder 71. The exhaust gas is filtered through the filter holes on the surface of the filter cylinder 71. When the exhaust gas enters the filter holes on the surface of the filter cylinder 71, the filter cylinder 71 rotates, causing the exhaust gas inside the filter holes to undergo relative displacement. This allows the exhaust gas to come into contact with the moist sponge pads set inside the filter holes. The moist sponge pads adsorb and purify the exhaust gas again, so that the tiny impurities inside the exhaust gas are adsorbed and cleaned. When the filter cylinder 71 rotates to the lower position, it will automatically clean the surface of the filter cylinder 71 and the sponge pads inside the filter cylinder 71, so that the filter cylinder 71 can maintain a good filtration efficiency and filtration effect.

[0062] Step 4: The gas diffused from the outside of the filter cartridge 71 flows to the right and through the upper notch of the partition plate 8 to the top of the activated carbon filter plate 9. Then the exhaust gas passes downward through the activated carbon filter plate 9 and is adsorbed by the activated carbon inside the activated carbon filter plate 9. After multiple filtrations, the exhaust gas contains fewer impurities, which can improve the service life of the activated carbon inside the activated carbon filter plate 9 and improve the adsorption effect of the activated carbon on the exhaust gas after multiple filtrations. The gas after activated carbon adsorption treatment is discharged to the right through the exhaust pipe 41.

[0063] Step 5: After the exhaust gas treatment is completed, open the valve inside the water pipe 11 to discharge the cleaning liquid used to clean the filter cartridge 71 downwards. After discharge, inject clean water into the purification tank 1 again through the water pipe 11 for cleaning and discharge, so as to keep the filter cartridge 71 clean.

[0064] The working principle and usage process of this invention are as follows: Connect the pressure water injection pipe to the bottom end of the flow water pipe 11, then open the valve inside the flow water pipe 11 to add the cleaning solution into the purification tank 1, positioning it between the mounting frame 5 and the partition mounting plate 8. Then close the valve to disconnect the pressure water injection pipe, and inject the exhaust gas into the purification tank 1 through the air inlet pipe 3. After entering the purification tank 1 through the air inlet pipe 3, the exhaust gas diffuses outward and flows to the right under the obstruction of the diffuser plate 31. The exhaust gas flowing to the right along the inside of the purification tank 1 contacts the surface of the filter plate 61. When the exhaust gas passes through the filter plate 61, larger particles of impurities inside the exhaust gas are filtered out by the filter plate 61. Start the drive motor 81, and the drive motor 81 drives the drive shaft. 74 drives the power gear 76 to rotate, which in turn drives the transmission rod 68 to rotate. The transmission rod 68, in turn, drives the drive gear ring 65 to rotate. The drive gear ring 65 drives the cleaning scraper 64 to rotate along the surface of the filter plate 61. The cleaning scraper 64 cleans the impurities on the surface of the filter plate 61 as it rotates. During its rotation, the cleaning scraper 64 pushes the impurities towards the middle of the filter plate 61, so that the impurities eventually enter the impurity collection cylinder 62 through the impurity collection notch 63. Then, it slides to the right along the impurity collection cylinder 62 into the connecting spherical shell 67, and finally slides into the slag discharge pipe 66 for storage. The gas filtered by the filter plate 61 flows to the right into the filter. The water flows from the inside of the filter cylinder 71 to the outside for filtration. When the gear at the right end of the transmission rod 68 rotates, it drives the mounting ring seat 72 to rotate. The mounting ring seat 72 drives the filter cylinder 71 to rotate. When the filter cylinder 71 rotates, it drives the movable clamping plate 78 to rotate. When the filter cylinder 71 moves the movable clamping plate 78 to a lower position, the movable clamping plate 78 is located above the sponge pad. The movable clamping plate 78 presses the sponge pad, squeezing out the water inside the sponge pad. At the same time, the discharged water also squeezes out and cleans the impurities on the surface of the sponge pad, improving the cleaning quality of the filter cylinder 71 and the sponge pad. When the filter cylinder 71 moves the movable clamping plate 78 to a higher position, the sponge pad... The sponge pad is located above the movable plate 78. Under its own weight, the movable plate 78 is pressed tightly against the inner surface of the movable cavity 77. At this time, the sponge pad will not be fully expanded under pressure, thus connecting the movable plate 78 with the outer hole of the filter cartridge 71. When the exhaust gas passes through the hole on the surface of the filter cartridge 71, the filter cartridge 71 will rotate, causing the exhaust gas to deflect and contact the sponge pad. Through the gaps on the surface of the sponge pad and the cooperation of water, the tiny impurities in the exhaust gas are adsorbed and filtered, thereby improving the filtration quality of the exhaust gas by the filter cartridge 71. The gas filtered by the filter cartridge 71 diffuses outward to the gap between the filter cartridge 71 and the purification tank 1, and then flows to the right through the notch above the partition mounting plate 8.Finally, the gas passes through the activated carbon filter plate 9, is adsorbed and filtered by the activated carbon filter plate 9, and is discharged to the right through the exhaust pipe 41, thus completing the filtration process. After filtration, the internal valve of the flowing water pipe 11 is opened to discharge the cleaning liquid containing impurities downwards.

[0065] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly exhaust gas treatment device comprising a purification tank body (1), a large particle filtering device (6) for filtering large particles and having a self-cleaning function, and a water washing filtering device (7) for adsorbing and filtering fine particle impurities, characterized in that: The bottom of the purification tank (1) is equipped with a support bracket (2) for support. The left end face of the purification tank (1) is equipped with an air inlet pipe (3) for injecting the gas to be purified into the purification tank (1). The right side of the purification tank (1) is equipped with a sealing cover (4) by threads. The side of the sealing cover (4) is equipped with an exhaust pipe (41) for discharging the purified gas. The inside of the purification tank (1) is equipped with an installation frame (5). The inside of the installation frame (5) is equipped with a large particle filter (6) for preliminary purification of the gas and automatic discharge of the filtered particles. The inner wall of the purification tank (1) and the position to the right of the installation frame (5) are equipped with a partition mounting plate (8). A water washing filter device (7) for auxiliary filtration using water is provided on the left side. A water pipe (11) for adding and draining water to the water washing filter device (7) is installed at the bottom of the purification tank (1). A valve is installed inside the water pipe (11). A drive motor (81) for driving the water washing filter device (7) and the large particle filter device (6) is installed on the right side wall of the partition mounting plate (8). A notch is provided on the upper side of the partition mounting plate (8) for discharging the air filtered by the water washing filter device (7) to the right. A positioning bracket (91) is installed on the inner wall of the purification tank (1) and on the right side of the partition mounting plate (8). An activated carbon filter plate (9) for adsorbing and filtering air is attached to the inner side of the positioning bracket (91). The large particle filtration device (6) includes a filter plate (61), an impurity collection cylinder (62), an impurity collection notch (63), a cleaning scraper (64), a drive gear ring (65), a slag discharge pipe (66), a connecting spherical shell (67), and a transmission rod (68). The filter plate (61) is installed inside the mounting frame (5). The impurity collection cylinder (62) is rotatably installed inside the filter plate (61) via a bearing. The impurity collection notch (63) is opened on the outer wall of the impurity collection cylinder (62) and located on the left side of the filter plate (61). The cleaning scraper (64) is located on the left side of the filter plate (61). The inner end of the cleaning scraper (64) extends into the impurity collection cylinder (62) through the impurity collection notch (63) and connects with the impurity collection cylinder. (62) Connection, the drive gear ring (65) is rotatably installed on the left side wall of the filter plate (61) through the bearing, the outer end of the cleaning scraper (64) is installed on the inner wall of the drive gear ring (65), the connecting spherical shell (67) is installed on the right outer wall of the impurity collection cylinder (62) through the bearing, the slag discharge pipe (66) is pressed on the bottom of the connecting spherical shell (67), the bottom end of the slag discharge pipe (66) penetrates the purification tank (1) and extends to the outside of the purification tank (1), the bottom end of the slag discharge pipe (66) is equipped with a collection sealing cover, the transmission rod (68) is rotatably installed on the mounting frame (5) through the bearing, the left end of the transmission rod (68) extends to the outside of the drive gear ring (65), the left end of the transmission rod (68) is equipped with a gear, and the gear meshes with the drive gear ring (65); The cleaning scraper (64) is vortex-shaped in its entirety, and the cross-section of the cleaning scraper (64) is a horizontal "J" shape, with the right end of the cross-section of the cleaning scraper (64) tilting towards the middle. The diameter of the left end of the impurity collection cylinder (62) is smaller than that of the right end, and the connecting spherical shell (67) is spherically fitted onto the outside of the right end of the impurity collection cylinder (62).

2. The environmentally friendly exhaust treatment device of claim 1, wherein: The water washing and filtration device (7) includes a filter cylinder (71), a mounting ring seat (72), a positioning bracket (73), a drive shaft (74), a cleaning brush roller (75), a power gear (76), a movable cavity (77), a movable clamping plate (78), and a positioning clamping post (79). The filter cylinder (71) is rotatably mounted on the left side wall of the partition mounting plate (8) via a bearing. The mounting ring seat (72) is mounted on the left end of the filter cylinder (71). A support ring seat is rotatably mounted on the outer wall of the mounting ring seat (72) via a bearing. The outer wall of the support ring seat is mounted on the inner wall of the purification tank (1). The positioning bracket (73) is mounted on the inner wall of the purification tank (1) and located to the left of the support ring seat. The drive shaft (74) is mounted on the left side wall of the partition mounting plate (8) via a bearing and located directly opposite the drive motor (81). The right end of the drive shaft (74) passes through the partition mounting plate (8) and is connected to the output of the drive motor (81). The drive shaft (74) is rotatably mounted on the right side wall of the positioning bracket (73) via a bearing. The cleaning brush roller (75) is mounted on the outer wall of the drive shaft (74) and located inside the filter cylinder (71). The power gear (76) is mounted on the outer wall of the drive shaft (74) and located inside the mounting ring seat (72). The outer wall of the right end of the transmission rod (68) is rotatably mounted on the positioning bracket (73) via a bearing. A gear is mounted on the right end of the transmission rod (68). The gear meshes with the gear head of the power gear (76) and the inner wall of the mounting ring seat (72). The movable cavity (77) is opened inside the filter cylinder (71). The movable plate (78) is movably inserted into the positioning pin (79). The end of the movable plate (78) is mounted on the inner wall of the movable cavity (77). The movable plate (78) is movably engaged inside the movable cavity (77) via the positioning pin (79).

3. The environmentally friendly waste gas treatment equipment according to claim 2, characterized in that: The right end of the air inlet pipe (3) extends into the interior of the purification tank (1). The inner wall of the purification tank (1) is fitted with a diffuser plate (31) by a bracket. The diffuser plate (31) is made of multiple concentric trumpet-shaped retaining rings.

4. The environmentally friendly waste gas treatment equipment according to claim 3, characterized in that: The diameter of the left end of the filter cylinder (71) is larger than that of the right end, and the diameter of the right end of the cleaning brush roller (75) is smaller than that of the left end. The outer wall of the cleaning brush roller (75) is provided with a brush.

5. The environmentally friendly waste gas treatment equipment according to claim 4, characterized in that: A cleaning fluid is injected between the partition mounting plate (8) and the mounting frame (5), and the level of the cleaning fluid submerges the drive shaft (74).

6. The environmentally friendly waste gas treatment equipment according to claim 5, characterized in that: A sponge pad is installed on the side of the movable plate (78) away from the axis of the filter cylinder (71).

7. A method for treating environmentally friendly waste gas using an environmentally friendly waste gas treatment device, comprising the environmentally friendly waste gas treatment device as described in any one of claims 3-6, characterized in that, Includes the following steps: Step 1: Connect the bottom end of the water pipe (11) to the pressurized water injection pipe, and then open the valve inside the water pipe (11). Inject the cleaning solution into the purification tank (1) through the pressurized water injection pipe. After the cleaning solution is injected into the purification tank (1), it will submerge the lower part of the filter cylinder (71) and the lower part of the cleaning brush roller (75). Step 2: Install the exhaust gas pipe and the left end of the inlet pipe (3). The exhaust gas is discharged into the interior of the purification tank (1) through the inlet pipe (3). After the exhaust gas enters the interior of the purification tank (1), it diffuses under the obstruction of the diffuser plate (31) and then contacts the filter plate (61). The filter plate (61) filters out large particulate impurities in the exhaust gas. At the same time, the cleaning scraper (64) cleans the surface of the filter plate (61) to prevent impurities from accumulating and causing blockage and affecting the filtration efficiency. Step 3: The gas filtered by the filter plate (61) flows to the right to the inside of the filter cylinder (71), and then diffuses outward along the inside of the filter cylinder (71). The exhaust gas is filtered through the filter holes on the surface of the filter cylinder (71). When the exhaust gas enters the filter holes on the surface of the filter cylinder (71), the exhaust gas inside the filter holes will be relatively displaced by the revolution of the filter cylinder (71), so that the exhaust gas comes into contact with the wet sponge pad set inside the filter hole. The exhaust gas is re-adsorbed and purified by the wet sponge pad, so that the tiny impurities inside the exhaust gas are adsorbed and cleaned. When the filter cylinder (71) rotates to the lower position, it will automatically clean the surface of the filter cylinder (71) and the sponge pad inside the filter cylinder (71), so that the filter cylinder (71) can maintain a good filtration efficiency and filtration effect. Step 4: The gas diffused out from the outside of the filter cylinder (71) flows to the right and through the upper notch of the partition plate (8) to the top of the activated carbon filter plate (9). Then the waste gas passes down through the activated carbon filter plate (9) and is adsorbed by the activated carbon inside the activated carbon filter plate (9). After multiple filtrations, the waste gas has fewer impurities, which can improve the service life of the activated carbon inside the activated carbon filter plate (9) and improve the adsorption effect of the activated carbon on the waste gas after multiple filtrations. The gas after activated carbon adsorption treatment is discharged to the right through the exhaust pipe (41). Step 5: After the exhaust gas treatment is completed, open the valve inside the water pipe (11) to discharge the cleaning liquid used to clean the filter cartridge (71) downwards. After discharge, inject clean water into the purification tank (1) again through the water pipe (11) for cleaning and discharge, so that the filter cartridge (71) remains clean.

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