Waste gas filtering device

Abstract

The invention relates to the technical field of waste gas treatment, and particularly discloses a waste gas filtering device which comprises a box body, a supporting plate and an activated carbon box, the supporting plate is arranged in the box body, sleeves are fixedly installed at the four corners of the top of the supporting plate, and movable rods are in sealed sliding connection with the interiors of the sleeves; the top end of the movable rod penetrates through the sleeve and extends to the position above the sleeve, the activated carbon box is arranged at the top end of the movable rod and can extrude the movable rod to move downwards and compress the gas volume in the sleeve, and a square ring pipe and a limiting pipe are arranged in the supporting plate. The waste gas filtering device can relieve the vibration problem in the using process of the device, effectively protect the integrity of activated carbon, adjust the waste gas inlet air volume in a self-adaptive mode, deal with the conditions of uneven waste gas air volume distribution, honeycomb carbon adsorption capacity change and the like, clean dust accumulated at the bottom of honeycomb carbon in time, and improve the service life of the device. Therefore, high efficiency of waste gas filtration is ensured, and the utilization rate of activated carbon is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to a waste gas filtering device. Background Art

[0002] In the fields of industrial production, chemical medicine, spray printing, etc., the environmental pollution caused by waste gas emissions has received increasing attention. Activated carbon, due to its rich pore structure, huge specific surface area and strong adsorption capacity, can effectively filter out harmful substances such as volatile organic compounds, odorous substances and heavy metal ions in waste gas, thereby achieving standard waste gas emissions.

[0003] Chinese patent application number 202321977824.5 discloses an activated carbon adsorption box, including a purification box, an air outlet box is fixedly connected to the outside of the purification box, and three fixed plates are fixedly connected to the top and bottom ends of the inside of the purification box. The three fixed plates are arranged in sequence from left to right, and sliding frames are provided between adjacent fixed plates. A winding assembly for sealing is provided between the multiple sliding frames and the purification box.

[0004] The existing technology adopts a single-sided air intake method, which leads to uneven exhaust gas volume distribution on the left and right sides of the activated carbon adsorption box. As the activated carbon is used continuously, its adsorption capacity gradually decreases. The existing technology cannot adaptively adjust the air intake volume passing through the activated carbon according to the changes in air volume distribution and adsorption capacity, thereby reducing the adsorption quality and utilization rate of the activated carbon. In addition, the activated carbon is easily affected by vibration during use, thereby destroying the integrity of the activated carbon structure and causing its adsorption performance to continue to decay.

[0005] Therefore, it is necessary to solve the above problems by an exhaust gas filtering device. Summary of the Invention

[0006] In view of the above problems, the present invention provides an exhaust gas filtering device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an exhaust gas filtration device, comprising a housing, a support plate, and an activated carbon box, wherein the support plate is disposed inside the housing, sleeves are fixedly mounted at the four corners of the top of the support plate, a movable rod is sealingly and slidably connected to the interior of the sleeve, the top end of the movable rod passes through the sleeve and extends above the sleeve, and the activated carbon box is disposed at the top end of the movable rod, capable of squeezing the movable rod downward and compressing the volume of gas inside the sleeve; A square ring tube and a limit tube are provided inside the support plate. The limit tube is connected to the square ring tube. The bottom end of the sleeve passes through the top of the support plate and is connected to the square ring tube. A plurality of blades are provided inside the support plate below the activated carbon box. A gap is formed between two adjacent blades so that the exhaust gas can enter the activated carbon box through the gap. When the gas volume inside the sleeve changes, the limit tube and the gas volume inside the square ring tube can be driven to change synchronously, prompting the blades to rotate in the support plate and changing the size of the gap between adjacent blades.

[0008] Preferably, there are multiple groups of activated carbon boxes, multiple groups of honeycomb carbon are arranged inside the activated carbon boxes, and the multiple groups of honeycomb carbon are in conflict with each other.

[0009] Preferably, the left side wall of the box body is connected to and installed with an air inlet, and the right wall is connected to and installed with an air outlet. A mounting hole is opened on the front end surface of the box body, and a cover plate is threadedly installed on the outer side of the mounting hole.

[0010] Preferably, an air inlet cavity and an air outlet cavity are provided inside the box body, a horizontal plate is provided between the air inlet cavity and the air outlet cavity, the horizontal plate is fixed to the inner side wall of the box body, a plurality of air holes are opened on the horizontal plate, and the plurality of air holes are adapted to the activated carbon box.

[0011] Preferably, vertical plates are symmetrically fixedly installed on the left and right sides of the horizontal plate, a splicing plate is fixedly installed on the side above the horizontal plate between the two vertical plates, a first flow hole is opened on the side below the horizontal plate on the left vertical plate, and a second flow hole is opened on the side above the splicing plate on the right vertical plate.

[0012] Preferably, the support plate is slidably assembled on the top of the transverse plate, and a telescopic cylinder is fixedly connected to the side of the support plate away from the cover plate, and the telescopic cylinder is fixed to the top of the transverse plate.

[0013] Preferably, the limiting tube and the square ring tube are arranged inside the support plate, the square ring tube is located outside the limiting tube, and the front side of the limiting tube is connected to the square ring tube.

[0014] Preferably, the top of the movable rod is fixedly connected to a permanent magnet plate, the top of the permanent magnet plate is in conflict with the bottom of the activated carbon box, the outside of the sleeve is provided with an electromagnetic plate, the bottom of the electromagnetic plate is fixed to the top of the support plate, the relative end faces of the electromagnetic plate and the permanent magnet plate have different magnetic properties, and the sleeve and the outside of the movable rod are provided with a buffer spring, and the two ends of the buffer spring are respectively fixed to the permanent magnet plate and the electromagnetic plate.

[0015] Preferably, a through hole is opened on the support plate, the blade is arranged in the through hole, sealing strips are installed on the upper and lower sides of the blade, and rotating shafts are symmetrically installed on the left and right sides of the blade. The end of the rotating shaft away from the blade passes through the support plate and extends to the inside of the limiting tube.

[0016] Preferably, the rotating shaft is located at the end of the limiting tube and is fixedly connected to a connecting rod, a sliding groove is provided on the connecting rod, a linkage rod is slidably connected inside the sliding groove, the end of the linkage rod away from the connecting rod is fixedly connected to the displacement rod, the end of the displacement rod close to the cover plate is fixedly connected to a movable plate, the cross-sectional size of the movable plate is adapted to the limiting tube, the movable plate can slide sealedly inside the limiting tube, the end of the movable plate away from the displacement rod is fixedly connected to a return spring, and the end of the return spring away from the movable plate is fixed to the inner wall of the square ring tube.

[0017] Compared with the prior art, the present invention has the following advantages: The present invention can reduce the vibration problem during the use of the device and effectively protect the integrity of the activated carbon. At the same time, it can adaptively adjust the exhaust gas intake volume to deal with situations such as uneven exhaust gas volume distribution and changes in the adsorption capacity of honeycomb carbon, and promptly clean the dust accumulated at the bottom of the honeycomb carbon, thereby ensuring the high efficiency of exhaust gas filtration and improving the utilization rate of activated carbon. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the overall structure of the exhaust gas filtering device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the exhaust gas filtering device of the present invention; Figure 3 Schematic diagram of the relative positional relationship among the carrier assembly, the moving assembly, the supporting assembly and the adjusting assembly of the present invention; Figure 4 for Figure 3 A schematic diagram of the structure of part A in the middle; Figure 5 Schematic diagram of the structure of the carrier assembly of the present invention; Figure 6 This is a schematic structural diagram of the support plate of the present invention; Figure 7 It is a structural schematic diagram of the regulating assembly of the present invention; Figure 8 for Figure 7 A magnified schematic diagram of the structure of part B; Figure 9 This is a schematic diagram of the internal structure of the mobile component of the present invention; Figure 10 for Figure 9 A magnified schematic diagram of the structure of part C in the middle; Figure 11 This is a schematic diagram of the structure of the activated carbon box filled with honeycomb carbon in the present invention; Figure 12 It is a cross-sectional schematic diagram of the connection between the support component and the square ring tube.

[0019] Reference numerals: 10. Carrier assembly; 11. Box; 111. Air inlet cavity; 112. Air outlet cavity; 113. Horizontal plate; 114. Ventilation hole; 115. Vertical plate; 116. Splicing plate; 117. First flow hole; 118. Second flow hole; 12. Air inlet; 13. Air outlet; 14. Mounting hole; 15. Cover plate; 20. Moving assembly; 21. Support plate; 211. Through hole; 212. Limiting tube; 213. Square ring Tube; 22. Telescopic cylinder; 30. Support assembly; 31. Sleeve; 32. Movable rod; 33. Permanent magnet plate; 34. Electromagnetic plate; 35. Buffer spring; 40. Adjustment assembly; 41. Blade; 42. Sealing strip; 43. Rotating shaft; 431. Connecting rod; 432. Sliding groove; 433. Linkage rod; 434. Displacement rod; 435. Movable plate; 436. Return spring; 50. Activated carbon box; 51. Honeycomb carbon. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0021] like Figures 1-12 As shown, the exhaust gas filtering device of the present invention includes a carrier component 10, a mobile component 20, a support component 30, an adjustment component 40 and an activated carbon box 50. The number of the mobile components 20 is two groups, and the two groups of mobile components 20 are symmetrically arranged on the carrier component 10. The mobile component 20 is used to transport the support component 30 and the adjustment component 40. The number of the support components 30 is four groups, and the four groups of support components 30 are respectively arranged at the four corners of the mobile component 20 to reduce the vibration generated during the use of the exhaust gas filtering device, and use the support component 30 to detect the blockage of the activated carbon box 50. The adjustment component 40 is arranged on the mobile component 20. According to the frequency of use of the left and right activated carbon boxes 50, the adjustment component 40 can adaptively adjust the exhaust gas air volume and clean the dust accumulated in the activated carbon box 50. The activated carbon box 50 is arranged on the support component 30 and can effectively adsorb and filter harmful substances in the exhaust gas, thereby achieving the purpose of purifying the exhaust gas.

[0022] like Figure 11 As shown, multiple groups of honeycomb carbons 51 are arranged inside the activated carbon box 50. Adjacent honeycomb carbons 51 are tightly in contact with each other, completely filling the internal space of the activated carbon box 50 to efficiently adsorb and filter harmful substances in the exhaust gas.

[0023] like Figure 1-Figure 5As shown, the carrier assembly 10 includes a box body 11, an air inlet 12, an air outlet 13, a mounting hole 14 and a cover plate 15. The air inlet 12 is connected and installed on the left side wall of the box body 11 for introducing the exhaust gas to be treated. The air outlet 13 is connected and installed on the right side wall of the box body 11 to discharge the clean gas after filtration into the atmosphere. The mounting hole 14 is opened on the front face of the box body 11. The cross-sectional size of the mounting hole 14 is adapted to the two groups of activated carbon boxes 50, which facilitates the quick installation and convenient replacement of the two groups of activated carbon boxes 50. The cover plate 15 is threadedly assembled on the outside of the mounting hole 14. The edge of the cover plate 15 is provided with a sealing strip to prevent the exhaust gas from leaking from the mounting hole 14, thereby ensuring the airtightness of the box body 11.

[0024] Specifically, an air inlet cavity 111 and an air outlet cavity 112 are provided inside the box body 11. The air outlet cavity 112 is provided above the air inlet cavity 111. A horizontal plate 113 is provided between the air inlet cavity 111 and the air outlet cavity 112. The horizontal plate 113 is fixed to the inner wall of the box body 11. The horizontal plate 113 can provide a stable bearing platform for components such as the moving component 20 and the supporting component 30. Two air vents 114 are symmetrically provided on the horizontal plate 113. Exhaust gas can enter the activated carbon box 50 from the air inlet cavity 111 through the air vents 114. Vertical plates 115 are symmetrically fixedly installed on the left and right sides of the horizontal plate 113. The two vertical plates 115 and the horizontal plate 113 together constitute a stable supporting frame structure. A splicing plate 116 is fixedly installed on one side between the two vertical plates 115 and above the horizontal plate 113. Sealing strips are provided on the splicing plate 116 at the position that contacts the outer walls of the two groups of activated carbon boxes 50, which effectively prevents unfiltered exhaust gas from leaking from the peripheral gaps of the activated carbon box 50, thereby ensuring the quality of exhaust gas treatment.

[0025] Furthermore, a first flow hole 117 is provided on the side of the left vertical plate 115 below the horizontal plate 113. The first flow hole 117 cooperates with the air inlet 12 to allow the exhaust gas to directly enter the air inlet cavity 111 from the air inlet 12. A second flow hole 118 is provided on the side of the right vertical plate 115 above the splicing plate 116. The second flow hole 118 cooperates with the air outlet 13. The clean gas filtered by the activated carbon box 50 is quickly discharged through the air outlet cavity 112, the second flow hole 118 and the air outlet 13.

[0026] like Figure 3 、 Figure 4 、 Figure 9 and Figure 10As shown, the moving assembly 20 includes a support plate 21 and a telescopic cylinder 22. The support plate 21 is slidably mounted on the top of the horizontal plate 113. The telescopic cylinder 22 is fixedly mounted on the top of the horizontal plate 113 on the side away from the cover plate 15. The output end of the telescopic cylinder 22 is connected to the support plate 21. When the output end of the telescopic cylinder 22 is extended or retracted, it drives the support plate 21 to slide back and forth on the top of the horizontal plate 113, thereby driving the support assembly 30 and the activated carbon box 50 to slide back and forth synchronously, facilitating the replacement of the honeycomb carbon 51 inside the activated carbon box 50. The support plate 21 is provided with a through hole 211. The support plate 21 is symmetrically provided with a limit tube 212 inside. The through hole 211 and the limit tube 212 are mainly used to install the adjustment assembly 40. The support plate 21 is also provided with a square ring tube 213 inside. The square ring tube 213 is located outside the limit tube 212. The front side of the limit tube 212 is connected to the square ring tube 213, allowing the gas inside the square ring tube 213 to circulate inside the limit tube 212.

[0027] like Figure 4 and Figure 12 As shown, the support assembly 30 includes a sleeve 31, a movable rod 32, a permanent magnet plate 33, an electromagnetic plate 34 and a buffer spring 35. The sleeve 31 is fixedly mounted on the top of the support plate 21. The bottom end of the sleeve 31 passes through the top of the support plate 21 and is connected to the square annular tube 213 to ensure that the gas can flow between the sleeve 31 and the square annular tube 213 to form a closed gas circulation channel. The movable rod 32 is slidably connected in the sleeve 31 and is sealed with the sleeve 31. The top end of the movable rod 32 passes through the sleeve 31 and extends to the top of the sleeve 31. The lifting and lowering of the movable rod 32 will generate suction force and extrusion force in the sleeve 31, and compress the gas volume inside the sleeve 31, thereby driving the synchronous change of the gas volume and pressure inside the sleeve 31 and the square annular tube 213. The permanent magnet plate 33 is fixedly connected to the top of the movable rod 32. The top surface of the permanent magnet plate 33 contacts the bottom of the activated carbon box 50, providing stable support for the activated carbon box 50. The electromagnetic plate 34 is mounted on the outside of the sleeve 31. The bottom of the electromagnetic plate 34 is fixed to the support plate 21, ensuring that the electromagnetic plate 34 remains stable during use. The opposite end faces of the electromagnetic plate 34 and the permanent magnet plate 33 have different magnetic properties. The buffer spring 35 is mounted on the outside of the movable rod 32 and the sleeve 31, with its ends fixed to the permanent magnet plate 33 and the electromagnetic plate 34 respectively. The buffer spring 35 can reduce the vibration amplitude of the activated carbon box 50. During use, the current flowing through the electromagnetic plate 34 increases, and the magnetic attraction generated by the electromagnetic plate 34 on the permanent magnet plate 33 increases. The permanent magnet plate 33 compresses the buffer spring 35 and moves it downward, which in turn drives the movable rod 32 downward.

[0028] like Figures 6-10As shown, the adjustment component 40 includes blades 41, sealing strips 42 and a rotating shaft 43. There are multiple blades 41, which are installed in a linear array in the through hole 211. A gap is formed between two adjacent blades 41 so that the exhaust gas can enter the activated carbon box 50 through the gap. The sealing strips 42 are installed on the upper and lower sides of the blades 41. The rotation angle of the blades 41 is between 0° and 180°. When the blades 41 are at the 0° position, the sealing strips 42 of the two adjacent groups of blades 41 conflict with each other, forming a fully sealed state for the through hole 211, effectively preventing the exhaust gas from passing through. As the rotation angle of the blades 41 changes, the size of the gap between adjacent blades 41 changes synchronously, thereby realizing precise adjustment of the air volume passing through the through hole 211 to adapt to the usage frequency of the two groups of activated carbon boxes 50 and the changes in the adsorption capacity of the honeycomb carbon 51. The end of the movable plate 435 away from the displacement rod 434 is fixedly connected to the inner wall of the square ring tube 213.

[0029] During operation, when the gas pressure within the square annular tube 213 increases, the gas pressure acting on the movable plate 435 overcomes the initial elastic force of the return spring 436, causing the return spring 436 to undergo tensile deformation. During this process, the movable plate 435 moves directionally along the inner wall of the stop tube 212, driving the linkage rod 433 to slide linearly within the sliding groove 432 via the displacement rod 434. Through the interaction between the sliding groove 432 and the linkage rod 433, the linear motion of the linkage rod 433 is converted into the rotational motion of the rotating shaft 43, which in turn drives the blades 41 to rotate about their own axes, increasing the opening angle of the blades 41 and increasing the exhaust gas flow rate. Similarly, when the gas pressure within the square annular tube 213 decreases, the return spring 436 releases its stored elastic potential energy. Through the transmission of the movable plate 435 and the displacement rod 434, the linkage rod 433 slides in the opposite direction within the sliding groove 432, driving the rotating shaft 43 to rotate in the opposite direction, forcing the blades 41 to gradually decrease their opening angle until they close.

[0030] Working Principle: First, the operator removes the cover plate 15, releasing the seal on the mounting hole 14. The operator then controls the output end of the telescopic cylinder 22 to extend, driving the support plate 21 to slide forward along the top of the cross plate 113. This in turn drives the support assembly 30 to slide forward synchronously, exposing a small portion of the two sets of activated carbon boxes 50 outside the box body 11, making it easier to remove the two sets of activated carbon boxes 50. After the honeycomb carbon 51 is filled in the activated carbon boxes 50, the activated carbon boxes 50 are placed on the four sets of support assemblies 30, the output end of the telescopic cylinder 22 is controlled to shorten, and the cover plate 15 is reinstalled. During the above-mentioned movement, before the honeycomb carbon 51 is loaded, the return springs 436 of the two groups of adjustment components 40 are in a naturally relaxed state, and the opening angle of the initial position of the blade 41 is 0°, thereby achieving full sealing of the through hole 211; and when the activated carbon box 50 containing the honeycomb carbon 51 is placed on the support component 30, the movable rod 32 slides downward along the inner wall of the sleeve 31 under the action of the gravity of the honeycomb carbon 51, compressing the enclosed gas inside the sleeve 31 and the square ring tube 213, causing the internal gas pressure to increase and push the movable plate 435 to overcome the initial elastic force of the return spring 436, pushing the movable plate 435 to move backward along the inner wall of the limiting tube 212, thereby driving the blade 41 to rotate to a 90° open state, forming a channel for exhaust gas circulation, which is convenient for subsequent exhaust gas filtration.

[0031] Then, exhaust gas is introduced from the air inlet 12. The exhaust gas flows through the first flow hole 117, the air inlet cavity 111, and the air vent 114 in sequence, and enters the interior of the activated carbon box 50 for adsorption and filtration. The honeycomb carbon 51 is prone to vibration under the impact of aerodynamic forces and turbulence. Long-term vibration will cause damage to the structure of the honeycomb carbon 51 and reduce the filtration efficiency. When the activated carbon box 50 vibrates due to the impact of exhaust gas, the buffer spring 35 absorbs the vibration energy through elastic deformation, reducing the vibration amplitude of the activated carbon box 50. When the device is abnormal or resonance occurs, the vibration of the activated carbon box 50 will be significantly aggravated. At this time, the buffer spring 35 is used to detect the vibration amplitude. When the compression of the buffer spring 35 exceeds the preset vibration value, it indicates that the activated carbon box 50 is vibrating abnormally, and the buffer spring 35 alone can no longer effectively reduce the abnormal vibration. The buffer spring 35, electromagnetic plate 34, and permanent magnet plate 33 work together to address abnormal vibration. Specifically, during the rebound phase of the buffer spring 35, the electromagnetic plate 34 is energized, generating a magnetic attraction force on the permanent magnet plate 33. This acts as a damper on the rebound of the buffer spring 35, rapidly dampening the abnormal vibration and preventing the buffer spring 35 from vibrating back and forth (this process is similar to the operation of a car damper). During the compression phase of the buffer spring 35, the electromagnetic plate 34 is de-energized, preserving the vibration absorption of the buffer spring 35. Furthermore, by intermittently supplying current to the electromagnetic plate 34, abnormal vibration can be effectively suppressed, ensuring the overall stability of the activated carbon box 50 and the structural integrity of the honeycomb carbon 51, thereby guaranteeing the continued adsorption efficiency of the honeycomb carbon 51.

[0032] Next, after the exhaust gas enters the activated carbon box 50, the honeycomb carbon 51 begins to adsorb harmful substances in the exhaust gas. The generated clean gas flows through the air outlet cavity 112 and the second flow hole 118 in sequence, and is finally discharged into the atmosphere from the air outlet 13. During the long adsorption process, as the honeycomb carbon 51 continues to adsorb harmful substances, its own weight gradually increases, and its adsorption capacity continues to decrease. The honeycomb carbon 51 squeezes the permanent magnet plate 33 to generate continuous pressure on the movable rod 32, causing the movable rod 32 to move further downward in the sleeve 31, forming a progressive compression on the enclosed gas inside the sleeve 31 and the square annular tube 213, causing the internal gas pressure to increase synchronously with the increase in the adsorption amount of the honeycomb carbon 51, further stretching the reset spring 436 and driving the blades 41 to rotate from 90° to 180°. The gap between adjacent blades 41 gradually decreases, thereby achieving adaptive adjustment of the exhaust gas volume to cope with the gradual decline in the adsorption capacity of the honeycomb carbon 51 and improve the filtration quality of the honeycomb carbon 51. When the adsorption of the honeycomb carbon 51 reaches saturation, the blades 41 rotate to the 180° extreme position. At this time, the sealing strips 42 of the adjacent blades 41 are tightly pressed against each other, completely blocking the through-hole 211. At the same time, the compression of the buffer spring 35 reaches the preset saturation preset value, prompting the staff to replace the honeycomb carbon 51 in time. Due to the single-sided intake characteristics of the exhaust gas, the exhaust gas volume exposed to the left activated carbon box 50 is higher than that on the right, resulting in the adsorption process of the honeycomb carbon 51 on the left being faster than that on the right. Therefore, the blades 41 of the left through-hole 211 reach the closed state before the right, effectively solving the problem of the single-sided honeycomb carbon 51 in traditional filtering devices continuing to take in air after adsorption is saturated, avoiding the direct discharge of insufficiently filtered exhaust gas, and significantly improving the overall filtration quality. The blades 41 of the right through-hole 211 remain open until the right honeycomb carbon 51 is close to saturation, realizing the differentiated utilization of the honeycomb carbon 51 on both sides and maximizing the utilization rate of the honeycomb carbon 51 on the right.

[0033] Finally, when the honeycomb carbon 51 in both sets of activated carbon boxes 50 reaches the adsorption saturation state, the compression amount of the buffer spring 35 of the two sets of support assemblies 30 simultaneously reaches the saturation preset value. At this time, the staff removes the cover plate 15 and controls the output end of the telescopic cylinder 22 to extend, and removes the activated carbon box 50 so as to replace the honeycomb carbon 51. After removing the activated carbon box 50, the permanent magnet plate 33 loses the external load, and the reset spring 436 resets due to the release of elastic potential energy, thereby driving the movable plate 435 and the displacement rod 434 to move along the inner wall of the limit tube 212 toward the cover plate 15, and synchronously drives the rotating shaft 43 to rotate in the opposite direction, so that the blade 41 rotates 180° to return to the initial position. The sealing strips 42 of adjacent blades 41 are tightly in contact, preventing the exhaust gas remaining in the air intake chamber 111 from leaking out during the honeycomb carbon 51 replacement operation, thereby avoiding harm to the staff or pollution of the environment. After completing the replacement of the honeycomb carbon 51, the newly filled activated carbon box 50 is restored to the initial working position by moving the assembly 20, and the above-mentioned operation steps are repeated to restart the exhaust gas adsorption and filtration work to achieve continuous and efficient purification of the exhaust gas.

[0034] In the above process, if the dust content in the exhaust gas is high, the dust will gradually accumulate at the bottom of the honeycomb carbon 51 under the airflow, causing the pores of the honeycomb carbon 51 to be blocked, thereby preventing the exhaust gas from effectively passing through the honeycomb carbon 51 for filtration, significantly reducing the utilization rate of the honeycomb carbon 51. In order to solve this problem, the compression amount of the buffer spring 35 is used to determine whether the honeycomb carbon 51 is blocked. When the compression amount of the buffer spring 35 is less than the preset blockage value within the specified time, it indicates that the honeycomb carbon 51 is seriously blocked by dust. Specifically: By controlling the electromagnetic plate 34 to pass intermittent current, when the electromagnetic plate 34 is energized, a magnetic attraction force is generated on the permanent magnet plate 33, driving the permanent magnet plate 33 to move downward. When the electromagnetic plate 34 is de-energized, the buffer spring 35 pushes the permanent magnet plate 33 upward due to its own elastic force, so that the permanent magnet plate 33 drives the activated carbon box 50 to vibrate at high frequency in a small range, and uses the inertial force to throw off the dust at the bottom of the honeycomb carbon 51.

[0035] At the same time, the lifting and lowering of the movable rod 32 generates suction force and extrusion force in the sleeve 31, which in turn drives the gas pressure inside the sleeve 31 and the square ring tube 213 to change alternately, so that the displacement rod 434 is sealed and reciprocating linear motion in the limiting tube 212, driving the opening angle of the blade 41 to change back and forth, and the gap between adjacent blades 41 changes periodically with the change of the angle of the blade 41, so that the dust accumulated at the bottom of the honeycomb carbon 51 is subjected to continuous changes in the size and direction of the wind force, thereby achieving a pulse wind cleaning effect on the dust.

[0036] During the up-and-down vibration of the activated carbon box 50 and the reciprocating motion of the blades 41, the sealing strips 42 remain in contact with the bottom of the activated carbon box 50. This regularly scrapes away dust from the bottom of the honeycomb charcoal 51, further enhancing the dust removal effect and effectively preventing dust from clogging the honeycomb charcoal 51. After a period of intermittent current flow, if the compression of the buffer spring 35 exceeds the preset clogging value within a specified time, it indicates that the dust at the bottom of the honeycomb charcoal 51 has been effectively removed, allowing the honeycomb charcoal 51 to resume adsorption and filtration of the exhaust gas, thereby ensuring the utilization rate and filtration quality of the honeycomb charcoal 51.

[0037] It is worth noting that when the permanent magnet plate 33 drives the activated carbon box 50 to vibrate at a high frequency and a small amplitude, it will not cause damage to the honeycomb carbon 51 .

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas filtering device, comprising a housing (11), a support plate (21), and an activated carbon box (50), wherein the support plate (21) is arranged inside the housing (11), and is characterized in that: Sleeves (31) are fixedly mounted at the four corners of the top of the support plate (21), and a movable rod (32) is sealed and slidably connected inside the sleeve (31). The top end of the movable rod (32) passes through the sleeve (31) and extends to the top of the sleeve (31). The activated carbon box (50) is arranged at the top end of the movable rod (32) and can squeeze the movable rod (32) to move downward and compress the volume of gas inside the sleeve (31); A square ring tube (213) and a position limiting tube (212) are provided inside the support plate (21), the position limiting tube (212) is connected to the square ring tube (213), the bottom end of the sleeve (31) passes through the top of the support plate (21) and is connected to the square ring tube (213), and a plurality of blades (41) are provided inside the support plate (21) and are located below the activated carbon box (50), a gap is formed between two adjacent blades (41), so that the exhaust gas can enter the activated carbon box (50) through the gap, and when the gas volume inside the sleeve (31) changes, the gas volume inside the position limiting tube (212) and the square ring tube (213) can be driven to change synchronously, so that the blades (41) rotate inside the support plate (21), and the size of the gap between adjacent blades (41) is changed.

2. The exhaust gas filtering device according to claim 1, characterized in that: There are multiple groups of activated carbon boxes (50), and multiple groups of honeycomb carbon (51) are arranged inside the activated carbon boxes (50), and the multiple groups of honeycomb carbon (51) conflict with each other.

3. The exhaust gas filtering device according to claim 1, characterized in that: The left side wall of the box body (11) is connected to an air inlet (12), and the right side wall is connected to an air outlet (13). A mounting hole (14) is provided on the front end surface of the box body (11), and a cover plate (15) is threadedly mounted on the outer side of the mounting hole (14).

4. The exhaust gas filtering device according to claim 1, characterized in that: An air inlet cavity (111) and an air outlet cavity (112) are provided inside the box body (11), a horizontal plate (113) is provided between the air inlet cavity (111) and the air outlet cavity (112), the horizontal plate (113) is fixed to the inner side wall of the box body (11), and a plurality of air vents (114) are provided on the horizontal plate (113), and the plurality of air vents (114) are adapted to the activated carbon box (50).

5. The exhaust gas filtering device according to claim 4, characterized in that: Vertical plates (115) are symmetrically fixedly installed on the left and right sides of the horizontal plate (113), a splicing plate (116) is fixedly installed on the side between the two vertical plates (115) located above the horizontal plate (113), a first flow hole (117) is opened on the side of the left vertical plate (115) located below the horizontal plate (113), and a second flow hole (118) is opened on the side of the right vertical plate (115) located above the splicing plate (116).

6. The exhaust gas filtering device according to claim 4, characterized in that: The support plate (21) is slidably assembled on the top of the transverse plate (113), and a telescopic cylinder (22) is fixedly connected to the side of the support plate (21) away from the cover plate (15), and the telescopic cylinder (22) is fixed to the top of the transverse plate (113).

7. The exhaust gas filtering device according to claim 1, characterized in that: The position-limiting tube (212) and the square ring tube (213) are arranged inside the support plate (21), the square ring tube (213) is located outside the position-limiting tube (212), and the front side of the position-limiting tube (212) is connected to the square ring tube (213).

8. The exhaust gas filtering device according to claim 1, characterized in that: The top of the movable rod (32) is fixedly connected to a permanent magnet plate (33), the top of the permanent magnet plate (33) is in conflict with the bottom of the activated carbon box (50), the outer sleeve (31) is provided with an electromagnetic plate (34), the bottom of the electromagnetic plate (34) is fixed to the top of the support plate (21), the relative end faces of the electromagnetic plate (34) and the permanent magnet plate (33) have different magnetic properties, the outer sleeve (31) and the movable rod (32) are provided with a buffer spring (35), and the two ends of the buffer spring (35) are respectively fixed to the permanent magnet plate (33) and the electromagnetic plate (34).

9. The exhaust gas filtering device according to claim 1, characterized in that: The support plate (21) is provided with a through hole (211), the blade (41) is arranged in the through hole (211), sealing strips (42) are installed on the upper and lower sides of the blade (41), and rotating shafts (43) are symmetrically installed on the left and right sides of the blade (41), and the end of the rotating shaft (43) away from the blade (41) passes through the support plate (21) and extends to the inside of the limiting tube (212).

10. The exhaust gas filtering device according to claim 9, characterized in that: The rotating shaft (43) is located at the end of the limiting tube (212) and is fixedly connected to a connecting rod (431). A sliding groove (432) is provided on the connecting rod (431). A linkage rod (433) is slidably connected inside the sliding groove (432). An end of the linkage rod (433) away from the connecting rod (431) is fixedly connected to a displacement rod (434). An end of the displacement rod (434) close to the cover plate (15) is fixedly connected to a movable plate (435). The cross-sectional size of the movable plate (435) is adapted to the limiting tube (212). The movable plate (435) can slide in a sealed manner inside the limiting tube (212). An end of the movable plate (435) away from the displacement rod (434) is fixedly connected to a return spring (436). An end of the return spring (436) away from the movable plate (435) is fixed to the inner wall of the square ring tube (213).

Images