A honeycomb filter

Abstract

The application relates to the technical field of gas filtration, in particular to a honeycomb filter which comprises a box body, a wind guide pipe and a filter body in communication with the wind guide pipe, a cladding shell is arranged on the filter body, a plurality of heat exchange cavities are arranged between the cladding shell and the filter body, sealing plates are rotationally arranged at air inlet positions of the plurality of heat exchange cavities, a temperature control protection unit connected with the sealing plates and the heat exchange cavities is arranged in the box body. When the honeycomb filter is used, the plurality of heat exchange cavities between the cladding shell and the filter body are arranged, and a pure mechanical temperature control protection unit driven by a temperature sensing bag is matched, the number of heat exchange cavities participating in heat exchange can be automatically adjusted according to the change of tail gas temperature, accurate dynamic regulation and control of the working temperature of the filter body is realized, thereby effectively avoiding the thermal expansion and thermal stress accumulation of the filtering medium caused by continuous heat action, and micro cracks or sintering deformation of the honeycomb ceramic body is prevented.

Description

Technical Field

[0001] This invention relates to the field of gas filtration technology, specifically to a honeycomb filter. Background Technology

[0002] A honeycomb filter is a filter element with a honeycomb channel structure designed using porous ceramic or metal as the substrate. Its geometry presents a regularly arranged array of parallel channels, with the channels separated by porous walls, forming a honeycomb-like unit structure. The working principle of this filter is based on the wall-flow filtration mechanism, where dust-laden gas enters from the inlet channel and is forced through the porous walls into the adjacent outlet channel under the drive of pressure difference. Particles are intercepted and deposited on the walls and inside the micropores, thus achieving efficient gas-solid separation. The core function of the honeycomb filter is to finely filter particles in complex media such as high-temperature flue gas, industrial exhaust gas, and molten metal. Its structural features are mainly reflected in its large specific surface area, low fluid resistance, high mechanical strength, and excellent thermal shock resistance. The regular parallel channel design ensures uniform airflow distribution and low pressure drop. The pore size and porosity of the porous walls can be adjusted to meet the interception requirements of particles of different sizes, while the high temperature resistance and corrosion resistance of the ceramic material enable it to operate stably for a long time under harsh conditions.

[0003] However, the following problems exist when using honeycomb filters to filter high-temperature flue gas: High-temperature flue gas enters the honeycomb filter through a pipe, and under the drive of pressure difference, the flue gas passes through the porous honeycomb wall. Particulate matter is intercepted and deposited on the surface of the filter pores or inside the micropores, while the purified gas is discharged from the filter outlet to enter subsequent heat recovery or emission stages. However, continuous heat will cause thermal expansion and thermal stress in the filter media. Long-term operation may lead to microcracks or sintering deformation in the honeycomb ceramic body, weakening its mechanical strength and filtration accuracy, further shortening the filter's lifespan. More importantly, heat determines the amount of condensable components in the flue gas. In the case of a filter that is in a phase state, once the filter stops working due to cleaning of accumulated dust, the system temperature will drop rapidly. The tar, unburned hydrocarbons, and acidic gases that were originally in a gaseous state will condense into a liquid oil film or viscous substance as the temperature drops below the dew point. These liquefied substances will firmly adhere to the walls of the honeycomb filter and the inside of the micropores, causing filter blockage and a sharp increase in airflow resistance. At the same time, they combine with the intercepted dust to form a difficult-to-remove adhesive scale, which aggravates corrosion and breeds secondary pollution. In severe cases, it may even cause the filter pores to be completely sealed and the filter to fail permanently, reducing the efficiency of flue gas recovery. To address this, we propose a honeycomb filter. Summary of the Invention

[0004] One of the technical problems this application aims to solve is that once the filter stops working due to cleaning of accumulated dust or other operations, the system temperature will drop rapidly. The tar, unburned hydrocarbons, and acidic gases that were originally in a gaseous state will condense into a liquid oil film or viscous substance as the temperature drops below the dew point. These liquefied substances will firmly adhere to the wall surface and the inside of the micropores of the honeycomb filter, causing filter blockage and a sharp increase in airflow resistance. At the same time, they will combine with the intercepted dust to form a sticky scale that is difficult to remove.

[0005] To address the aforementioned technical problems, this application provides a honeycomb filter, including a housing, an air duct, and a filter body connected to the air duct. The filter body is fitted with a protective shell, and multiple heat exchange chambers are disposed between the protective shell and the filter body. Sealing plates are rotatably mounted at the air inlets of each of the multiple heat exchange chambers. A temperature control and protection unit connected to the sealing plates and heat exchange chambers is disposed within the housing. This unit drives the corresponding sealing plate to rotate according to changes in the exhaust gas temperature during high-temperature exhaust gas filtration, thereby opening and closing the corresponding heat exchange chambers. A cleaning unit is also provided within the housing to clean the honeycomb pores on the filter body.

[0006] In some embodiments, the temperature control and protection unit includes an adjusting member disposed on the housing, which adjusts the number of heat exchange chambers that are opened. The adjusting member is provided with a rotating member that drives the sealing plate to rotate. The adjusting member is provided with a power member that provides power for the rotating member to operate. The housing is provided with a closing member that seals the exhaust port of the heat exchange chamber when the filter body stops working.

[0007] In some embodiments, the adjusting member includes a docking plate disposed on the housing, the docking plate having a plurality of diversion slots for cooperating with the air inlet of the heat exchange chamber, a rotating rod rotatably disposed in the diversion slot, one end of the rotating rod passing through the diversion slot, the rotating rod being connected to a sealing plate, an air inlet pipe disposed on the housing, the air inlet pipe communicating with the plurality of diversion slots, and the air inlet pipe being connected to an external air source.

[0008] In some embodiments, the rotating component includes a fixed rod disposed at the top of the docking plate, an extension plate disposed on the fixed rod, a telescopic rod disposed on the extension plate, a lifting tube sleeved at one end of the rotating rod passing through the diversion groove, one end of the lifting tube being connected to the telescopic rod, a pressure spring sleeved on the telescopic rod, a spiral groove being formed inside the lifting tube, a push rod disposed on the rotating rod, one end of the push rod extending into the spiral groove and slidably connected to the spiral groove, a limit ring disposed on the lifting tube, a compression spring sleeved on the lifting tube, a sliding ring slidably disposed on the lifting tube, both ends of the compression spring being connected to the sliding ring and the limit ring respectively, a T-shaped baffle disposed at one end of the sliding ring, the baffle being slidably connected to the docking plate, and the baffle abutting against the sealing plate.

[0009] In some embodiments, the power component includes a synchronization plate slidably disposed on the top of the docking plate, a plurality of wedge-shaped top blocks disposed on the synchronization plate, a top rod disposed on the sliding ring for use with the top blocks, and the initial distance between the plurality of wedge-shaped top blocks and the top rods being different, the initial spacing between the plurality of wedge-shaped top blocks and the corresponding top rods gradually increasing in the direction away from the air inlet of the filter body, a pressure chamber disposed on the top of the docking plate, a piston plate slidably disposed in the pressure chamber, a piston rod disposed on one side of the piston plate, the piston rod being connected to the synchronization plate, a return spring sleeved on one end of the piston rod located in the pressure chamber, a temperature sensing bulb disposed at the air inlet end of the air guide pipe, and the temperature sensing bulb being connected to the pressure chamber through a pipe.

[0010] In some embodiments, the closure includes a guide plate disposed on the housing, the guide plate being located at the exhaust port of the heat exchange chamber, a guide groove being formed on the guide plate, a closure plate being slidably disposed within the guide groove, a push spring being disposed within the guide groove, one end of the push spring being connected to the closure plate, a rotating shaft being rotatably mounted at the air inlet end of the air duct, and the rotating shaft being connected to the side wall of the air duct via a torsion spring, a baffle plate being disposed on the rotating shaft, one end of the rotating shaft penetrating the air duct, a circular plate being disposed at the end of the rotating shaft away from the baffle plate, a traction rope being disposed on the circular plate, one end of the traction rope being connected to the closure plate.

[0011] In some embodiments, the cleaning unit includes a cleaning component disposed on the filter body, which cleans the honeycomb pores on the filter body. The cleaning component is provided with a hot air component, which heats the gas ejected during the cleaning process.

[0012] In some embodiments, the cleaning component includes a reciprocating screw and a sliding rod rotatably mounted on the filter body. A drive rod is provided on the reciprocating screw, one end of which passes through the air duct and the housing. A cleaning chamber is provided on the reciprocating screw and the sliding rod. The cleaning chamber is threadedly connected to the reciprocating screw and slidably connected to the sliding rod. An air jet hole that mates with the honeycomb holes is provided on the cleaning chamber. A rotating handle is provided at the outer end of the drive rod outside the housing.

[0013] In some embodiments, an air collection chamber is provided at the location of the exhaust port of the heat exchange chamber. The air collection chamber is provided with multiple heat exchange pipes that are connected to an external heat collection device. A heating chamber is provided inside the box. The heating chamber is connected to a cleaning chamber through a pipe. A heat storage block is provided inside the heating chamber. The heat exchange pipes pass through the heating chamber and the heat storage block. A compression air pump is provided outside the box. A protrusion is provided on the drive rod that works with the compression air pump. An elastic airbag is provided on the outside of the box that is connected to the compression air pump. The elastic airbag is connected to the heating chamber through a pipe.

[0014] In some embodiments, the baffle plate is provided with corrugated grooves.

[0015] This invention has at least the following beneficial effects:

[0016] By setting multiple heat exchange chambers between the casing and the filter body, and cooperating with a purely mechanical temperature control and protection unit driven by a temperature sensor, the number of heat exchange chambers participating in heat exchange can be automatically adjusted according to changes in exhaust gas temperature. This achieves precise dynamic control of the filter body's operating temperature, effectively avoiding thermal expansion and thermal stress accumulation of the filter media caused by continuous heating, preventing micro-cracks or sintering deformation in the honeycomb ceramic body, and significantly improving the filter's structural stability and long-term service life. At the same time, this design adjusts the sealing plate of the heat exchange chamber inlet through the temperature control and protection unit. When the filtration system stops working due to cleaning accumulated dust, the closure automatically seals the heat exchange chamber exhaust outlet, effectively slowing down heat loss and temperature drop of the filter body. This prevents condensable components such as tar, unburned hydrocarbons, and acidic gases in the flue gas from liquefying into a viscous oil film due to a sudden drop in temperature below the dew point, thus avoiding filter pore blockage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-sectional structure of the middle box;

[0019] Figure 3 For the present invention Figure 2 Schematic diagram of the cutaway box structure;

[0020] Figure 4 For the present invention Figure 3 Another structural diagram;

[0021] Figure 5 This is a schematic diagram of the heat exchange cavity structure of the present invention;

[0022] Figure 6 This is a schematic diagram of the adjusting component structure of the present invention;

[0023] Figure 7 This is a schematic diagram of the rotating component structure of the present invention;

[0024] Figure 8 For the present invention Figure 7 Enlarged structural diagram of area A in the middle;

[0025] Figure 9 This is a schematic diagram of the closure component of the present invention;

[0026] Figure 10 This is a schematic diagram of the cleaning unit structure of the present invention;

[0027] Figure 11 This is a schematic diagram of the cleaning component structure of the present invention;

[0028] Figure 12 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0029] In the diagram: 1. Housing; 2. Air duct; 3. Filter body; 4. Encasing shell; 5. Heat exchange chamber; 6. Sealing plate; 7. Temperature control and protection unit; 8. Adjusting component; 81. Connecting plate; 82. Diverter groove; 83. Rotating rod; 84. Inlet pipe; 9. Rotating component; 91. Fixed rod; 92. Extension plate; 93. Telescopic rod; 94. Pressure spring; 95. Lifting pipe; 96. Spiral groove; 97. Push rod; 98. Sliding ring; 99. Limiting ring; 910. Compression spring; 911. Baffle; 10. Power component; 101. Synchronizing plate; 102. Top block; 103. Top rod; 104. Pressure chamber; 105. Piston plate; 106. Piston rod; 07. Return spring; 108. Temperature sensor; 11. Closing element; 112. Guide plate; 113. Guide groove; 114. Closing plate; 115. Push spring; 116. Baffle plate; 117. Rotating shaft; 118. Circular plate; 119. Traction rope; 12. Cleaning unit; 13. Cleaning component; 131. Reciprocating screw; 132. Drive rod; 133. Sliding rod; 134. Cleaning chamber; 135. Air jet; 136. Rotating handle; 14. Hot air component; 141. Air collection chamber; 142. Heat exchange tube; 143. Heating chamber; 144. Heat storage block; 145. Protrusion; 146. Compressed air pump; 147. Elastic airbag; 15. Corrugated groove. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figure 1-4 This invention provides a technical solution: a honeycomb filter, comprising a housing 1, an air duct 2, and a filter body 3 connected to the air duct 2. The filter body 3 is provided with a covering shell 4, and multiple heat exchange chambers 5 are provided between the covering shell 4 and the filter body 3. Each of the multiple heat exchange chambers 5 has a sealing plate 6 rotatably installed at its air inlet. The housing 1 is provided with a temperature control and protection unit 7 connected to the sealing plate 6 and the heat exchange chambers 5, which drives the corresponding sealing plate 6 to rotate according to the temperature change of the exhaust gas during high-temperature exhaust gas filtration, thereby opening and closing the corresponding heat exchange chambers 5. The housing 1 is provided with a cleaning unit 12, which cleans the honeycomb pores on the filter body 3.

[0032] The temperature control and protection unit 7 includes an adjusting member 8 disposed on the housing 4, which adjusts the number of heat exchange chambers 5 that are opened. The adjusting member 8 is provided with a rotating member 9, which drives the sealing plate 6 to rotate. The adjusting member 8 is provided with a power member 10, which provides power for the rotating member 9. The housing 4 is provided with a closing member 11, which seals the exhaust port of the heat exchange chamber 5 when the filter body 3 stops working.

[0033] The adjusting component 8 includes a docking plate 81 disposed on the housing 4. The docking plate 81 has multiple diversion slots 82 that cooperate with the air inlet of the heat exchange chamber 5. A rotating rod 83 is rotatably disposed in the diversion slot 82. One end of the rotating rod 83 passes through the diversion slot 82 and is connected to the sealing plate 6. An air inlet pipe 84 is disposed on the housing 1. The air inlet pipe 84 communicates with the multiple diversion slots 82 and is connected to an external air source.

[0034] The rotating component 9 includes a fixed rod 91 disposed at the top of the docking plate 81, an extension plate 92 disposed on the fixed rod 91, a telescopic rod 93 disposed on the extension plate 92, a lifting tube 95 sleeved at one end of the rotating rod 83 passing through the diversion groove 82, one end of the lifting tube 95 being connected to the telescopic rod 93, a pressure spring 94 sleeved on the telescopic rod 93, a spiral groove 96 being formed inside the lifting tube 95, a push rod 97 disposed on the rotating rod 83, one end of the push rod 97 extending into the spiral groove 96 and slidably connected to the spiral groove 96, a limit ring 99 disposed on the lifting tube 95, a compression spring 910 sleeved on the lifting tube 95, a sliding ring 98 slidably disposed on the lifting tube 95, the two ends of the compression spring 910 being connected to the sliding ring 98 and the limit ring 99 respectively, a T-shaped baffle 911 disposed at one end of the sliding ring 98, the baffle 911 being slidably connected to the docking plate 81 and abutting against the sealing plate 6.

[0035] The power component 10 includes a synchronization plate 101 slidably disposed on the top of the docking plate 81. The synchronization plate 101 is provided with a plurality of wedge-shaped top blocks 102. The sliding ring 98 is provided with a top rod 103 that cooperates with the top blocks 102. The initial distance between the plurality of wedge-shaped top blocks 102 and the top rod 103 is different. The initial distance between the plurality of wedge-shaped top blocks 102 and the corresponding top rod 103 gradually increases in the direction away from the air inlet of the filter body 3. The top of the docking plate 81 is provided with a pressure chamber 104. A piston plate 105 is slidably disposed in the pressure chamber 104. A piston rod 106 is provided on one side of the piston plate 105. The piston rod 106 is connected to the synchronization plate 101. A return spring 107 is sleeved on one end of the piston rod 106 located in the pressure chamber 104. A temperature sensing bulb 108 is provided at the air inlet end of the air guide pipe 2. The temperature sensing bulb 108 is connected to the pressure chamber 104 through a pipe.

[0036] During high-temperature exhaust gas filtration, the gas enters from the air inlet of the air duct 2 and then enters the filter body 3. As the gas flows, the temperature sensing bulb 108 is heated, thereby generating pressure. The pressure enters the pressure chamber 104 through the pipe, thereby squeezing the piston plate 105 and pushing the piston plate 105 to move. The movement of the piston plate 105 drives the piston rod 106 and the synchronization plate 101 connected to the piston rod 106 to move. The movement of the synchronization plate 101 drives multiple top blocks 102 to move synchronously. Since the initial distance between the top block 102 and the corresponding top rod 103 gradually increases in the direction away from the air inlet of the filter body 3, when the exhaust gas temperature rises, the top rod 103 closest to the air inlet of the filter body 3 is lifted by the top block 102 first.

[0037] When the top rod 103 is lifted, it first drives the sliding ring 98 and the baffle 911 to rise against the compression spring 910, thereby releasing the baffle 911 from limiting the sealing plate 6. Then, it further drives the lifting pipe 95 to rise against the pressure of the pressure spring 94. When the lifting pipe 95 rises, it drives the rotating rod 83 to rotate through the cooperation of the spiral groove 96 and the push rod 97. The rotation of the rotating rod 83 drives the sealing plate 6 to rotate, thereby opening the heat exchange chamber 5 at the corresponding position of the docking plate 81 to dissipate heat from the filter body 3 during the filtration process. At the same time, when the exhaust gas temperature fluctuates and rises, because the direction away from the air inlet of the filter body 3 gradually increases, the multiple heat exchange chambers 5 will adjust according to the temperature change of the filtered exhaust gas.

[0038] By placing the temperature sensing bulb 108 at the air inlet of the air duct 2, it can sense the temperature change of the exhaust gas in real time and convert the heat signal into a pressure signal. This pressure signal then drives the piston plate 105 and the synchronization plate 101 in the pressure chamber 104 to produce linear displacement through the pipeline. The initial distance between the multiple wedge-shaped top blocks 102 on the synchronization plate 101 and their corresponding top rods 103 gradually increases along the direction away from the air inlet of the filter body 3. This achieves an orderly response mechanism in which the number of heat exchange chambers 5 opening increases step by step as the exhaust gas temperature rises, effectively avoiding sudden temperature changes caused by single-stage fully open or fully closed heat exchange. The design significantly suppresses the thermal expansion differences and thermal stress concentration induced by uneven temperature distribution in the honeycomb ceramic body, preventing the initiation and propagation of microcracks and ensuring the long-term stability of the mechanical strength and filtration accuracy of the filter medium. At the same time, through the linkage design of the push rod 103 driving the sliding ring 98 and the lifting tube 95, when the push rod 103 is lifted, the sliding ring 98 first drives the baffle 911 to release the restriction on the sealing plate 6, and then the spiral groove 96 in the lifting tube 95 cooperates with the push rod 97 to drive the rotating rod 83 to rotate, thus realizing the smooth opening of the sealing plate 6.

[0039] The exhaust gas temperature is sensed in real time by the temperature sensing bulb 108, and the temperature change is converted into the linear displacement of the synchronization plate 101. Then, by utilizing the preset initial distance difference between multiple wedge-shaped top blocks 102 and top rods 103, a dynamic adjustment mechanism is realized in which the number of heat exchange chambers 5 opened increases step by step as the exhaust gas temperature rises and decreases step by step as the temperature falls, so that the filter body 3 is always in a dynamic thermal equilibrium state: when the exhaust gas temperature rises, the heat exchange chambers 5 gradually intervene to remove excess heat, effectively suppressing local overheating and thermal expansion differences caused by heat accumulation, and preventing thermal stress concentration and microcrack propagation in the honeycomb ceramic body; when the exhaust gas temperature falls, the heat exchange chambers 5 gradually withdraw, avoiding excessive cooling that causes a sudden drop in wall temperature, thereby eliminating thermal shock damage caused by drastic temperature fluctuations. At the same time, this graded response mechanism makes the process of putting into and withdrawing the heat exchange chambers 5 smooth and orderly, avoiding temperature overshoot and oscillation caused by single-stage full opening or full closing, alleviating the cumulative damage of thermal fatigue to the filter media during long-term operation, and significantly improving the structural stability and service life of the filter under wide temperature fluctuation conditions.

[0040] The closure 11 includes a guide plate 112 disposed on the housing 4, the guide plate 112 being located at the exhaust port of the heat exchange chamber 5, the guide plate 112 having a guide groove 113, a closure plate 114 being slidably disposed within the guide groove 113, a push spring 115 being disposed within the guide groove 113, one end of the push spring 115 being connected to the closure plate 114, a rotating shaft 117 being rotatably mounted at the air inlet end of the air duct 2, and the rotating shaft 117 being connected to the side wall of the air duct 2 via a torsion spring, a baffle plate 116 being disposed on the rotating shaft 117, one end of the rotating shaft 117 penetrating the air duct 2, and a circular plate 118 being disposed at the end of the rotating shaft 117 away from the baffle plate 116, a traction rope 119 being disposed on the circular plate 118, one end of the traction rope 119 being connected to the closure plate 114.

[0041] During normal filtration, the exhaust gas first contacts the baffle plate 116, pushing the baffle plate 116 and the rotating shaft 117 to deflect. The deflection of the rotating shaft 117 causes the circular plate 118 to deflect, thereby pulling the traction rope 119, which in turn drives the closing plate 114 connected to the traction rope 119 to rise against the force of the pushing spring 115, so that the exhaust port of the heat exchange chamber 5 is in the open state. When filtration stops, the baffle plate 116 is reset under the action of the torsion spring, so that the exhaust port of the heat exchange chamber 5 becomes closed, thereby preventing the filter body 3 from cooling down rapidly after filtration stops, which would cause the residual exhaust gas in the honeycomb pores to condense.

[0042] By installing a rotating shaft 117 and a baffle plate 116 connected by a torsion spring at the air inlet end of the air duct 2, and a linkage mechanism consisting of a guide plate 112, a closing plate 114, a push spring 115, and a traction rope 119 at the air outlet of the heat exchange chamber 5, the opening and closing state of the air outlet of the heat exchange chamber 5 and the filtration condition are dynamically controlled. During normal filtration, the exhaust gas flow pushes the baffle plate 116 to deflect, which in turn pulls the closing plate 114 to overcome the resistance of the push spring 115 and rise through the rotating shaft 117, the circular plate 118, and the traction rope 119, keeping the air outlet unobstructed and ensuring normal heat exchange during the filtration process. When filtration stops due to operations such as cleaning accumulated dust, the exhaust gas flow disappears, and the baffle plate 116, under the action of the torsion spring, automatically... When the filter is reset, the traction rope 119 loosens, and the closing plate 114 slides down the guide groove 113 under the drive of the push spring 115 and closes the exhaust port. This converts the heat exchange chamber 5 into a sealed and insulated chamber, effectively slowing down the heat loss and temperature drop rate of the filter body 3. It prevents condensable components such as tar, unburned hydrocarbons and acidic gases in the residual exhaust gas from liquefying into a viscous oil film due to the temperature dropping below the dew point. This avoids the problems of filter pore blockage and increased airflow resistance caused by these liquefied substances adhering to the honeycomb filter pore wall and micropore interior. At the same time, it prevents the liquefied substances from combining with the intercepted dust to form adhesive scale, inhibiting corrosion and secondary pollution from the source, and ensuring the permeability and filtration efficiency of the filter after shutdown and restart.

[0043] The cleaning unit 12 includes a cleaning component 13 disposed on the filter body 3, which cleans the honeycomb holes on the filter body 3. The cleaning component 13 is provided with a hot air component 14, which heats the gas sprayed during the cleaning process.

[0044] The cleaning component 13 includes a reciprocating screw 131 and a sliding rod 133 rotatably mounted on the filter body 3. A drive rod 132 is provided on the reciprocating screw 131. One end of the drive rod 132 passes through the air duct 2 and the housing 1. A cleaning chamber 134 is provided on the reciprocating screw 131 and the sliding rod 133. The cleaning chamber 134 is threadedly connected to the reciprocating screw 131. The cleaning chamber 134 is slidably connected to the sliding rod 133. An air jet hole 135 that mates with the honeycomb holes is provided on the cleaning chamber 134. A rotating handle 136 is provided at the end of the drive rod 132 located outside the housing 1.

[0045] A heat exchange chamber 5 has an air collection chamber 141 at its exhaust port. The air collection chamber 141 is equipped with multiple heat exchange pipes 142 that are connected to an external heat collection device. A heating chamber 143 is installed inside the housing 1. The heating chamber 143 is connected to a cleaning chamber 134 via a pipe. A heat storage block 144 is installed inside the heating chamber 143. The heat exchange pipes 142 pass through the heating chamber 143 and the heat storage block 144. A compression air pump 146 is installed outside the housing 1. A protrusion 145 that works with the compression air pump 146 is installed on the drive rod 132. An elastic airbag 147 that is connected to the compression air pump 146 is installed on the outside of the housing 1. The elastic airbag 147 is connected to the heating chamber 143 via a pipe.

[0046] When the filter is cleaned after shutdown, the operator manually drives the drive rod 132 to rotate, which in turn drives the reciprocating screw 131 to rotate. The rotation of the reciprocating screw 131 causes the cleaning chamber 134 mounted on it to move along the surface of the filter body 3. When the drive rod 132 rotates, it simultaneously drives the protrusion 145 mounted on it to rotate. When the protrusion 145 rotates, it drives the compression air pump 146 to work, filling the elastic air bag 147 with gas. The gas in the elastic air bag 147 is squeezed into the heating chamber 143 under the action of elastic pressure, and comes into contact with the heat storage block 144 in the heating chamber 143. Since the heat storage block 144 is in contact with the heat exchange tube 142, the airflow will be heated when it flows through the heat storage block 144. The heated airflow enters the individual honeycomb holes through the jet holes 135 on the cleaning chamber 134 to clean the impurities in the holes. The impurities cleaned by backflushing are then manually cleaned out of the box 1 by the operator.

[0047] The reciprocating screw 131 and sliding rod 133 enable the cleaning chamber 134 to move smoothly along the filter surface when the operator manually rotates the drive rod 132, achieving segmented, pore-by-pore cleaning of the honeycomb pores and avoiding energy dispersion and cleaning dead zones caused by large-area coverage of high-pressure airflow. The protrusion 145 on the drive rod 132 causes the compression air pump 146 to be triggered synchronously when the drive rod 132 rotates, filling the elastic air bag 147 with gas. This achieves mechanical linkage between the cleaning action and the air supply, eliminating the need for an additional power source or electronic control, simplifying the operation process and improving reliability. The introduction of the elastic air bag 147 reduces the intermittent compression pump... The gas is converted into a continuous and stable airflow output, avoiding the impact damage of pulsed airflow to the honeycomb pore walls. More importantly, by passing the heat exchange pipe 142 on the heat exchange chamber 5 exhaust air collection chamber 141 through the heating chamber 143 and the heat storage block 144, the waste heat recovered during the filtration process is stored in the heat storage block 144 and used to heat the backflushing gas during cleaning. This makes the airflow entering the honeycomb pores have thermal characteristics similar to the working temperature of the filter element, effectively avoiding thermal shock cracks caused by cold air directly contacting the high temperature filter element. At the same time, the heated airflow can soften or melt the sticky impurities such as tar adhering to the pore walls, significantly improving the cleaning depth and cleanliness.

[0048] Example 2: Please refer to Figure 1-4 The present invention provides a technical solution: a corrugated groove 15 is provided on the baffle 116. The groove structure formed by the corrugated groove 15 can effectively guide the particles in the dust-laden airflow to slide down along the groove, reducing the deposition and adhesion of particles on the surface of the baffle 116, preventing the baffle 116 from becoming heavier, having increased rotational resistance, or becoming stuck and failing due to dust accumulation during long-term operation, thereby ensuring the reliable reset and long-term sensitivity of the baffle 116 under the action of the torsion spring; in addition, the geometric undulation of the corrugated groove 15 enhances the structural rigidity of the baffle 116 to a certain extent, making it less prone to flutter or deformation when subjected to high-speed airflow impact, and extending the fatigue life of the rotating shaft 117 and the torsion spring and other linkage components.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] 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.

Claims

1. A honeycomb filter, comprising a housing (1), an air duct (2), and a filter body (3) communicating with the air duct (2), characterized in that: The filter body (3) is provided with a covering shell (4), and multiple heat exchange chambers (5) are provided between the covering shell (4) and the filter body (3). Each heat exchange chamber (5) has a sealing plate (6) rotatably installed at the air inlet position. The housing (1) is provided with a temperature control protection unit (7) connected to the sealing plate (6) and the heat exchange chamber (5). When filtering high-temperature exhaust gas, the corresponding sealing plate (6) is driven to rotate according to the change of exhaust gas temperature to open and close the corresponding heat exchange chamber (5). The housing (1) is provided with a cleaning unit (12) to clean the honeycomb holes on the filter body (3).

2. The honeycomb filter according to claim 1, characterized in that: The temperature control protection unit (7) includes an adjustment component (8) set on the housing (4), which adjusts the number of heat exchange chambers (5) that are opened. The adjustment component (8) is provided with a rotating component (9), which drives the sealing plate (6) to rotate. The adjustment component (8) is provided with a power component (10), which provides power for the rotating component (9) to work. The housing (4) is provided with a closing component (11), which seals the exhaust port of the heat exchange chamber (5) when the filter body (3) stops working.

3. The honeycomb filter according to claim 2, characterized in that: The adjusting component (8) includes a docking plate (81) disposed on the covering shell (4). The docking plate (81) has multiple diversion slots (82) that cooperate with the air inlet of the heat exchange chamber (5). A rotating rod (83) is rotatably disposed in the diversion slot (82). One end of the rotating rod (83) passes through the diversion slot (82). The rotating rod (83) is connected to the sealing plate (6). An air inlet pipe (84) is disposed on the box body (1). The air inlet pipe (84) is connected to the multiple diversion slots (82) and is connected to an external air source.

4. The honeycomb filter according to claim 3, characterized in that: The rotating component (9) includes a fixed rod (91) at the top of the docking plate (81), an extension plate (92) on the fixed rod (91), a telescopic rod (93) on the extension plate (92), a lifting tube (95) sleeved at one end of the rotating rod (83) passing through the diversion groove (82), one end of the lifting tube (95) being connected to the telescopic rod (93), a pressure spring (94) sleeved on the telescopic rod (93), a spiral groove (96) being formed inside the lifting tube (95), and a push rod (97) on the rotating rod (83). (97) One end extends into the spiral groove (96) and is slidably connected to the spiral groove (96). A limit ring (99) is provided on the lifting tube (95). A compression spring (910) is sleeved on the lifting tube (95). A sliding ring (98) is slidably provided on the lifting tube (95). The two ends of the compression spring (910) are respectively connected to the sliding ring (98) and the limit ring (99). A T-shaped baffle (911) is provided at one end of the sliding ring (98). The baffle (911) is slidably connected to the docking plate (81), and the baffle (911) abuts against the sealing plate (6).

5. The honeycomb filter according to claim 4, characterized in that: The power component (10) includes a synchronization plate (101) slidably disposed on the top of the docking plate (81). The synchronization plate (101) is provided with a plurality of wedge-shaped top blocks (102). The sliding ring (98) is provided with a push rod (103) that cooperates with the top blocks (102). The initial distance between the plurality of wedge-shaped top blocks (102) and the push rod (103) is different. The initial distance between the plurality of wedge-shaped top blocks (102) and the corresponding push rod (103) gradually increases along the direction away from the air inlet of the filter body (3). The top of the docking plate (81) is provided with a pressure chamber (104), and a piston plate (105) is slidably arranged inside the pressure chamber (104). A piston rod (106) is provided on one side of the piston plate (105). The piston rod (106) is connected to the synchronization plate (101). A reset spring (107) is sleeved on one end of the piston rod (106) inside the pressure chamber (104). A temperature sensor (108) is provided at the air inlet end of the air duct (2). The temperature sensor (108) is connected to the pressure chamber (104) through a pipe.

6. The honeycomb filter according to claim 5, characterized in that: The closure (11) includes a guide plate (112) disposed on the housing (4). The guide plate (112) is located at the exhaust port of the heat exchange chamber (5). A guide groove (113) is provided on the guide plate (112). A closure plate (114) is slidably disposed in the guide groove (113). A push spring (115) is disposed in the guide groove (113). One end of the push spring (115) is connected to the closure plate (114). The air duct (2) enters... A rotating shaft (117) is rotatably mounted on the wind end, and the rotating shaft (117) is connected to the side wall of the air guide pipe (2) through a torsion spring. A baffle plate (116) is provided on the rotating shaft (117). One end of the rotating shaft (117) passes through the air guide pipe (2). A circular plate (118) is provided at the end of the rotating shaft (117) away from the baffle plate (116). A traction rope (119) is provided on the circular plate (118). One end of the traction rope (119) is connected to the closing plate (114).

7. The honeycomb filter according to claim 6, characterized in that: The cleaning unit (12) includes a cleaning component (13) disposed on the filter body (3), which cleans the honeycomb holes on the filter body (3). The cleaning component (13) is provided with a hot air component (14), which heats the gas sprayed during the cleaning process.

8. The honeycomb filter according to claim 7, characterized in that: The cleaning component (13) includes a reciprocating screw (131) and a sliding rod (133) rotatably mounted on the filter body (3). A drive rod (132) is provided on the reciprocating screw (131). One end of the drive rod (132) passes through the air duct (2) and the housing (1). A cleaning chamber (134) is provided on the reciprocating screw (131) and the sliding rod (133). The cleaning chamber (134) is threadedly connected to the reciprocating screw (131). The cleaning chamber (134) is slidably connected to the sliding rod (133). An air jet hole (135) that cooperates with the honeycomb holes is provided on the cleaning chamber (134). A rotating handle (136) is provided at the end of the drive rod (132) located outside the housing (1).

9. The honeycomb filter according to claim 8, characterized in that: The heat exchange chamber (5) has an air collection chamber (141) at the exhaust port. The air collection chamber (141) has multiple heat exchange pipes (142) that are connected to an external heat collection device. The housing (1) has a heating chamber (143) inside. The heating chamber (143) is connected to the cleaning chamber (134) through a pipe. The heating chamber (143) has a heat storage block (144) inside. The heat exchange pipes (142) pass through the heating chamber (143) and the heat storage block (144). The housing (1) has a compression air pump (146) outside. The drive rod (132) has a protrusion (145) that works with the compression air pump (146). The housing (1) has an elastic airbag (147) connected to the compression air pump (146) on the outside. The elastic airbag (147) is connected to the heating chamber (143) through a pipe.

10. The honeycomb filter according to claim 9, characterized in that: The baffle (116) is provided with a corrugated groove (15).

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