A flue gas filtering device and filtering method for electric heater

Abstract

The present invention relates to the technical field of smoke filtration, and discloses a smoke filter device and a filtering method for an electric heater, including a filter assembly, the filter assembly including an outer shell, an inner wall of the outer shell being fixedly connected to a ventilation shell, and an inner wall of the ventilation shell being fixedly connected to an air guide plate. In the present invention, after the air duct is blocked, the smoke introduced into the ventilation shell will push the air baffle plate downwards, and the downward movement of the air baffle plate will drive the sealing plate to move downwards, and before the air baffle plate is completely separated from the filter cartridge, the sealing plate will first block the opening of the bottom plate to prevent the smoke from being directly discharged. When the air baffle plate is completely separated from the filter cartridge, the smoke will pass between the filter cartridge and the inner shell, and the introduced smoke will be blown from the inside of the filter cartridge to the outside of the filter cartridge to blow out the dust blocked in the filter cartridge. After the smoke passes through the filter cartridge, the sliding baffle plate will be lifted upwards again through the air outlet, and the lifting height will be higher until the sliding baffle plate no longer blocks the ash discharge port, at which time the smoke will be discharged from the ash discharge port with the blown out dust.

Description

Technical Field

[0001] The invention relates to the technical field of smoke filtering, and in particular to a smoke filtering device and a filtering method for an electric heater. Background Art

[0002] An electric heater is an electric heating device used to heat, insulate and heat flowing liquid and gaseous media. Flue gas electric heaters are mainly used to heat the flue gas generated in the industrial production process to a certain temperature before discharging or reusing it. This type of equipment is usually used in the chemical, metallurgical, energy and other industries. Before using an electric heater to heat the flue gas, it is generally necessary to filter the flue gas.

[0003] In the process of flue gas filtration, it contains a lot of large dust particles. In a short period of time, the filter components will absorb a lot of dust and debris, which will affect the air intake. Frequent shutdown and cleaning are required, which is time-consuming and labor-intensive. In response to the above problems, the following solutions are proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a smoke filter device for an electric heater, comprising a filter assembly, the filter assembly comprising a shell, a ventilation shell is fixedly connected to the inner wall of the shell, a wind guide plate is fixedly connected to the inner wall of the ventilation shell, and further comprising:

[0005] An inner cleaning assembly, the inner cleaning assembly comprises a wind blocking plate arranged inside the ventilation shell, a fixing rod is fixedly connected to the bottom of the wind blocking plate, and a limiting plate 1 is fixedly connected to the outer surface of the fixing rod;

[0006] The external cleaning component comprises an electric connector arranged at the lower side of the wind blocking plate, a spring five is fixedly connected to the top of the electric connector, and a motor is arranged at the lower side of the electric connector.

[0007] Preferably, the inner wall of the air guide plate is rotatably connected to a filter cartridge, the outer surface of the ventilation shell is slidably connected to a sliding baffle, the outer surface of the sliding baffle is slidably connected to the inner wall of the shell, the top of the sliding baffle is fixedly connected to a ring rod, and the outer surface of the sliding baffle is sleeved with a spring. By setting the filter cartridge, the smoke can be filtered.

[0008] Preferably, the bottom of spring one is fixedly connected to the outer surface of the sliding baffle, the top of spring one is fixedly connected to the outer surface of the ventilation shell, the outer surface of the ring rod is slidably connected with a fixed sleeve, the top of the fixed sleeve is fixedly connected to the outer surface of the ventilation shell, the outer surface of the ventilation shell is fixedly connected with a fixed shell, and the inner wall of the fixed shell is slidably connected with a push rod. By setting spring one, the sliding baffle can be reset.

[0009] Preferably, the push rod is fixedly connected to a fixed box on the side away from the ventilation shell, two blocks are slidably connected to the inner wall of the fixed box, the two blocks are fixedly connected to spring 2 on the side close to each other, and the push rod is fixedly connected to a wind shield plate on the side close to the ventilation shell, the outer surface of the wind shield plate is slidably connected to the inner wall of the ventilation shell, a bottom plate is fixedly connected to the inner wall of the shell, the top of the bottom plate is fixedly connected to the bottom of the ventilation shell, and the top of the bottom plate is rotatably connected to the bottom of the filter cartridge. By setting spring 2, a force to move the two blocks away from each other can always be given.

[0010] Preferably, the outer surface of the wind blocking plate is slidably connected to the inner wall of the filter cartridge, the outer surface of the fixing rod is slidably connected to the inner shell, the bottom of the inner shell is fixedly connected to the top of the bottom plate, the inner wall of the limiting plate one is slidably connected to the inner wall of the inner shell, and the bottom of the limiting plate one is fixedly connected to a spring three. By setting the spring three, a reset force can be given to the limiting plate.

[0011] Preferably, the bottom of spring three is fixedly connected to the outer surface of the inner shell, the bottom of the fixing rod is fixedly connected to the limiting plate two, the inner wall of the limiting plate two is slidably connected with a sealing plate, the top of the sealing plate is fixedly connected with a spring four, the top of the spring four is fixedly connected to the bottom of the limiting plate two, a plurality of air outlets are provided on the outer surface of the fixing rod, and a plurality of ash discharge outlets are provided on the outer surface of the outer shell. By arranging spring four, after the sealing plate contacts the bottom plate, the spring four can be compressed so that the limiting plate two can continue to move downward.

[0012] Preferably, the outer surface of the energized connector is slidingly connected to the inner wall of the limit plate 2, the top of the spring 5 is fixedly connected to the outer surface of the limit plate 2, the inner wall of the inner shell is provided with a connector 2, the bottom of the inner shell is fixedly connected to the top of the motor, the output end of the motor is fixedly connected with some gears, the outer surfaces of some gears are meshingly connected to the inner wall of the filter cartridge, the outer surface of the filter cartridge is fixedly connected with a protrusion, the outer surface of the protrusion is rotatably connected to the inner wall, and by providing the spring 5, after the energized connector contacts the connector 2, the spring 5 can be compressed so that the limit plate 2 can continue to move upward, and when the limit plate 2 moves upward, the energized connector and the connector 2 can maintain contact for a period of time.

[0013] A filtering method for a smoke filter device for an electric heater comprises the following steps:

[0014] S1: When using this device, first install this device at the air inlet end of the electric heater, then introduce smoke into the interior of the ventilation shell from the top opening of the ventilation shell, the smoke entering the air duct will be filtered through the filter cartridge and enter its interior, and then discharged from the bottom of the bottom plate;

[0015] S2: After the device has been used for a period of time, the filter cartridge will gradually be blocked by the filtered dust. At this time, the flue gas entering the bottom of the sliding baffle through the air outlet will push the sliding baffle upward due to the increased air pressure, thereby driving the wind baffle to move and block the air duct entrance;

[0016] S3: When the air duct is blocked, the smoke will push the air blocking plate downwards and enter the interior of the filter cartridge, and then blow from the inside of the filter cartridge to the outside of the filter cartridge, blowing out the dust blocked inside the filter cartridge. The air blocking plate moves downward and the motor is started, which in turn drives the filter cartridge to scrape off the dust on its outer surface.

[0017] The present invention has the following beneficial effects:

[0018] (1) In the present invention, after the air duct is blocked, the smoke entering the ventilation shell will push the air baffle plate downward and compress the spring three. During the downward movement of the air baffle plate, the limit plate two will be driven downward together through the fixed rod. The downward movement of the limit plate two will drive the sealing plate to move downward through the spring four. Before the air baffle plate is completely separated from the filter cartridge, the sealing plate will first block the opening of the bottom plate to prevent the smoke from being discharged directly. When the air baffle plate is completely separated from the filter cartridge, the smoke will pass into the space between the filter cartridge and the inner shell. At this time, as the smoke continues to pass into the space, the smoke will be blown from the inside of the filter cartridge to the outside of the filter cartridge, thereby blowing out the dust blocked inside the filter cartridge. After the smoke passes through the filter cartridge, it will continue to push the sliding baffle plate upward again through the air outlet, and the lifting height will be higher until the sliding baffle plate no longer blocks the ash discharge port. At this time, the smoke will be discharged from the ash discharge port with the blown dust. This design can clean the dust blocked inside the filter cartridge by blowing the smoke from the inside of the filter cartridge to the outside, and can discharge the dust from the ash discharge port to prevent it from accumulating in large quantities for a long time.

[0019] (2) Due to the blocking effect of the ventilation shell and the filter cartridge, the smoke of the present invention will enter the air duct formed between every two wind guide plates. The smoke entering the air duct will be filtered by the filter cartridge and enter the interior thereof, and then be discharged from the bottom of the bottom plate. Since the path of the air duct is relatively small, the smoke will flow faster and the air pressure will increase after entering the air duct, thereby increasing the speed at which the smoke passes through the filter cartridge and improving the filtration efficiency. In the above process, in addition to passing through the filter cartridge, the smoke in the air duct will also enter between the ventilation shell and the outer shell through the air outlet. Due to the effect of the smoke pressure, it will give the sliding baffle an upward force. This design can improve the efficiency of smoke filtration by increasing the flow rate and pressure of the smoke.

[0020] (3) After the device of the present invention has been used for a period of time, the filter cartridge will gradually be clogged with filtered dust. During this process, due to the blockage of the filter cartridge, its wind resistance will increase, which will prevent the smoke entering the air duct from passing through the filter cartridge in time, causing the smoke to accumulate in the air duct, thereby increasing the air pressure. At this time, the smoke entering the bottom of the sliding baffle through the air outlet will push the sliding baffle upward due to the increased air pressure. The more serious the blockage of the filter cartridge is, the higher the sliding baffle rises. The rising of the sliding baffle will compress the spring and drive the ring rod to rise together. The rising of the ring rod will compress the air in the fixed sleeve and push the air into the fixed shell. The air will give the push rod a thrust. At this time, due to the blocking effect of the block, the push rod will not be pushed. As the sliding baffle drives the ring rod to rise to a certain height, the air pressure accumulated in the fixed shell will overcome the elastic force of spring 2 and press the block into the fixed box. Since there is no blocking effect of the block, the push rod will be pushed a distance instantly, and the push rod will drive the wind shield to move together, thereby blocking the entrance of the air duct and preventing smoke from entering the air duct. This design can automatically detect the blockage of the filter cartridge. When the filter cartridge is seriously blocked, the wind shield can be automatically triggered to block the air duct, which can prevent damage to the device and facilitate subsequent work.

[0021] (4) When the limit plate 2 of the present invention moves downward, it will also drive the energized connector 1 to move downward. The energized connector will contact the connector 2 early. At this time, a passage is formed between the motor and the power supply. When the limit plate 2 continues to move downward, the energized connector will compress the spring 5 and generate relative movement between the limit plate 2, so that the limit plate 2 can continue to move downward. After the passage is formed between the motor and the power supply, it will be started and drive some gears to rotate. Some gears will first idle. The idling time is the time for cleaning the dust blocked inside the filter cartridge in the above process. When the toothed part of the gears meshes with the inner wall of the filter cartridge, the filter cartridge will be driven to rotate. During the rotation of the filter cartridge, the dust attached to the outer surface of the filter cartridge will be scraped off by the wind guide plate, and then its outer surface will be cleaned. When the filter cartridge rotates, it will drive the protrusion to rotate together. When the protrusion rotates, it will push the wind shield plate to expose the air duct opening. At this time, due to the partial pressure of the air duct, the wind shield plate will move upward a certain distance under the action of the spring 3. The smoke will then pass through the duct and be discharged from the ash outlet. When the smoke passes through the duct, the dust scraped off the outer surface of the filter cartridge in the above process will be brought out together. As the filter cartridge rotates, the wind shield will be pushed further by the protrusion, increasing the exposed area of ​​the duct inlet. The wind shield will continue to move upward until the sealing plate is separated from the bottom plate. At this time, the smoke will be discharged from the bottom of the bottom plate through the filter cartridge, and the sliding baffle and the push rod will gradually reset under the action of spring one. At this time, due to the action of spring five, the energized connector will maintain contact with connector two for a period of time during the upward movement of limit plate two. During this period of time, the motor will drive the filter cartridge to continue to rotate until the protrusion does not coincide with the duct inlet. At this time, the device can work normally. This design can scrape off the dust on the outer surface of the filter cartridge and clean and discharge the dust from the inside of the device, and can restore the device to normal working state, so that the device can work for a long time without manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the internal cross-sectional structure of the housing of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the overall structure of the air guide plate of the present invention;

[0026] Figure 4This is a schematic diagram of the overall structure of the sliding baffle of the present invention;

[0027] Figure 5 It is a schematic diagram of the internal cross-sectional structure of the fixed shell of the present invention;

[0028] Figure 6 This is a schematic diagram of the internal cross-sectional structure of the filter cartridge of the present invention;

[0029] Figure 7 For the present invention Figure 6 A is a schematic diagram of the enlarged structure of the middle part;

[0030] Figure 8 This is a schematic diagram of the overall structure of some gears of the present invention;

[0031] Fig. 9 It is a schematic diagram of the working process of the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] In the figure: 1. filter assembly; 101. outer shell; 102. ventilation shell; 103. air guide plate; 104. filter cartridge; 105. sliding baffle; 106. spring one; 107. ring rod; 108. fixed sleeve; 109. fixed shell; 110. push rod; 111. spring two; 112. block; 113. wind shield; 2. inner cleaning assembly; 200. inner shell; 201. wind shield; 202. fixed rod; 203. limit plate one; 204. spring three; 205. limit plate two; 206. spring four; 207. sealing plate; 208. ash discharge port; 3. outer cleaning assembly; 301. power connector; 302. spring five; 303. motor; 304. part of gear; 305. bump. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] For example, see Figure 1 - Figure 5 The present invention is a smoke filter device for an electric heater, comprising a filter assembly 1, the filter assembly 1 comprising a housing 101, a ventilation housing 102 is fixedly connected to the inner wall of the housing 101, a wind guide plate 103 is fixedly connected to the inner wall of the ventilation housing 102, and further comprising:

[0036] The inner cleaning assembly 2 includes a wind blocking plate 201 disposed inside the ventilation shell 102, a fixing rod 202 is fixedly connected to the bottom of the wind blocking plate 201, and a limiting plate 203 is fixedly connected to the outer surface of the fixing rod 202;

[0037] The external cleaning component 3 includes an electrical connector 301 arranged at the lower side of the wind blocking plate 201, a spring 5 302 is fixedly connected to the top of the electrical connector 301, and a motor 303 is arranged at the lower side of the electrical connector 301.

[0038] The inner wall of the air guide plate 103 is rotatably connected to the filter cartridge 104, the outer surface of the ventilation shell 102 is slidably connected to the sliding baffle 105, the outer surface of the sliding baffle 105 is slidably connected to the inner wall of the shell 101, the top of the sliding baffle 105 is fixedly connected to a ring rod 107, and the outer surface of the sliding baffle 105 is sleeved with a spring 106. When using this device, first install this device on the air inlet end of the electric heater, and then pass the smoke into the interior of the ventilation shell 102 from the top opening of the ventilation shell 102. The smoke is blocked by the ventilation shell 102 and the filter cartridge 104. The smoke in the air duct will enter the air duct formed between every two air guide plates 103, and will be filtered by the filter cartridge 104 and enter the interior thereof. Since the path of the air duct is relatively small, the smoke will flow faster and the air pressure will increase after entering the air duct, thereby increasing the speed at which the smoke passes through the filter cartridge 104 and improving the filtering efficiency. In the above process, in addition to passing through the filter cartridge 104, the smoke in the air duct will also enter between the ventilation shell 102 and the outer shell 101 through the air outlet 208. Due to the effect of the smoke pressure, the smoke will give an upward force to the sliding baffle 105.

[0039] The bottom of spring 106 is fixedly connected to the outer surface of sliding baffle 105, the top of spring 106 is fixedly connected to the outer surface of ventilation shell 102, the outer surface of ring rod 107 is slidably connected with fixed sleeve 108, the top of fixed sleeve 108 is fixedly connected to the outer surface of ventilation shell 102, the outer surface of ventilation shell 102 is fixedly connected with fixed shell 109, the inner wall of fixed shell 109 is slidably connected with push rod 110. After the device is used for a period of time, the filter cartridge 104 will gradually be blocked by the filtered dust. In this process, due to the blockage of filter cartridge 104, its wind resistance will increase, which will cause the smoke entering the air duct to The smoke does not have time to pass through the filter cartridge 104, causing the smoke to accumulate in the air duct, thereby increasing the air pressure. At this time, the smoke that enters the bottom of the sliding baffle 105 through the air outlet 208 will push the sliding baffle 105 upward due to the increased air pressure. The more seriously the filter cartridge 104 is blocked, the higher the sliding baffle 105 rises. The rising of the sliding baffle 105 will compress the spring 106 and drive the ring rod 107 to rise together. The rising of the ring rod 107 will compress the air in the fixed sleeve 108 and push the air into the fixed shell 109. The air pushed into the fixed shell 109 will give the push rod 110 a thrust.

[0040] The push rod 110 is fixedly connected to a fixed box 111 on the side away from the ventilation shell 102, and two blocks 113 are slidably connected to the inner wall of the fixed box 111. The two blocks 113 are fixedly connected to a spring 112 on the side close to each other. The push rod 110 is fixedly connected to a windshield 114 on the side close to the ventilation shell 102. The outer surface of the windshield 114 is slidably connected to the inner wall of the ventilation shell 102. The inner wall of the outer shell 101 is fixedly connected to a bottom plate 115. The top of the bottom plate 115 is fixedly connected to the bottom of the ventilation shell 102, and the top of the bottom plate 115 is rotatably connected to the bottom of the filter cartridge 104. Due to the blocking effect of the block 113, the push rod 110 will not be pushed, and the sliding baffle 105 drives the ring rod After 107 rises to a certain height, the air pressure accumulated in the fixed shell 109 will overcome the elastic force of the spring 112 and press the block 113 into the fixed box 111. Since there is no blocking effect of the block 113, the push rod 110 will be pushed a distance instantly, and the push rod 110 will drive the wind shield 114 to move together, thereby blocking the entrance of the air duct and preventing the smoke from entering the air duct. This design can improve the efficiency of smoke filtration by increasing the flow rate and pressure of the smoke, and can automatically detect the blockage of the filter cartridge 104. When the filter cartridge 104 is seriously blocked, it can automatically trigger the wind shield 114 to block the air duct, preventing damage to the device while facilitating subsequent work.

[0041] For example 2, please refer to Figure 6 - Fig. 9 The present invention is a smoke filtering device for an electric heater. On the basis of the first embodiment, the outer surface of the wind blocking plate 201 is slidably connected to the inner wall of the filter cartridge 104, the outer surface of the fixing rod 202 is slidably connected to the inner shell 200, the bottom of the inner shell 200 is fixedly connected to the top of the bottom plate 115, the inner wall of the limiting plate 1 203 is slidably connected to the inner wall of the inner shell 200, and the bottom of the limiting plate 1 203 is fixedly connected to the spring 3 204.

[0042] The bottom of spring three 204 is fixedly connected to the outer surface of inner shell 200, the bottom of fixing rod 202 is fixedly connected to limiting plate two 205, the inner wall of limiting plate two 205 is slidably connected with sealing plate 207, the top of sealing plate 207 is fixedly connected with spring four 206, the top of spring four 206 is fixedly connected to the bottom of limiting plate two 205, the outer surface of fixing rod 202 is provided with a plurality of air outlets 208, the outer surface of outer shell 101 is provided with a plurality of ash discharge ports 209, when the air duct is blocked, the smoke entering into ventilation shell 102 will push air blocking plate 201 downward and compress spring three 204, the air blocking plate 201 will drive limiting plate two 205 to move downward together through fixing rod 202 in the process of moving downward, the downward movement of limiting plate two 205 will drive sealing plate 207 to move downward through spring four 206, when air blocking plate 201 and filter cartridge 104 are completely Before separation, the sealing plate 207 will first block the opening of the bottom plate 115 to prevent the smoke from being discharged directly. When the wind blocking plate 201 is completely separated from the filter cartridge 104, the smoke will pass into the space between the filter cartridge 104 and the inner shell 200. At this time, as the smoke continues to pass in, the smoke will blow from the inside of the filter cartridge 104 to the outside of the filter cartridge 104, and then blow out the dust blocked inside the filter cartridge 104. After the smoke passes through the filter cartridge 104, it will continue to push the sliding baffle 105 upward again through the air outlet 208, and the lifting height will be higher until the sliding baffle 105 no longer blocks the ash discharge port 209. At this time, the smoke will be discharged from the ash discharge port 209 with the blown dust. This design can clean the dust blocked inside the filter cartridge 104 by blowing the smoke from the inside of the filter cartridge 104 to the outside, and the dust can be discharged from the ash discharge port 209 to prevent it from accumulating in large quantities for a long time.

[0043] The outer surface of the power connector 301 is slidably connected to the inner wall of the limit plate 205, the top of the spring 5 302 is fixedly connected to the outer surface of the limit plate 205, the inner wall of the inner shell 200 is provided with a connector 2 3011, the bottom of the inner shell 200 is fixedly connected to the top of the motor 303, the output end of the motor 303 is fixedly connected to a partial gear 304, the outer surface of the partial gear 304 is meshed with the inner wall of the filter cartridge 104, the outer surface of the filter cartridge 104 is fixedly connected to a protrusion 305, the outer surface of the protrusion 305 is rotatably connected to the inner wall, and when the limit plate 205 moves downward, it will also drive the power connector 301 to move downward together, and the power connector 301 will contact the connector 2 3011 early, and at this time, a gap is formed between the motor 303 and the power supply. When the limit plate 205 continues to move downward, the energized connector 301 will compress the spring 5 302 and generate relative movement between the limit plate 205, so that the limit plate 205 can continue to move downward. After a passage is formed between the motor 303 and the power supply, it will be started and drive the partial gear 304 to rotate. The partial gear 304 will first idle. The idling time is the time for cleaning the dust blocked inside the filter cartridge 104 in the above process. When the toothed part of the partial gear 304 meshes with the inner wall of the filter cartridge 104, the filter cartridge 104 will be driven to rotate. During the rotation of the filter cartridge 104, the dust attached to the outer surface of the filter cartridge 104 will be scraped off by the air guide plate 103, and then its outer surface will be cleaned. When the filter cartridge 104 rotates, it will drive the protrusion 305 to rotate together. When the protrusion 305 rotates, it will push the wind shield 114 to expose the air duct opening. At this time, due to the partial pressure of the air duct, the wind shield 201 will move upward a certain distance under the action of the spring three 204, and then block the top of the filter cartridge 104. At this time, the smoke will pass through the air duct and finally be discharged from the ash discharge port 209. When the smoke passes through the air duct, the dust scraped off the outer surface of the filter cartridge 104 in the above process will be brought out together. As the filter cartridge 104 rotates, the wind shield 114 will continue to be pushed by the protrusion 305, so that the exposed area of ​​the air duct entrance increases, and the wind shield 201 will continue to move upward until the sealing plate 207 is separated from the bottom plate 115. At this time, the smoke The air will be discharged from the bottom of the bottom plate 115 through the filter cartridge 104, and the sliding baffle 105 and the push rod 110 will gradually reset under the action of the spring 106. At this time, the energized connector 301 will maintain contact with the connector 2 3011 for a period of time during the upward movement of the limit plate 205 due to the action of the spring 5 302. During this period of time, the motor 303 will drive the filter cartridge 104 to continue to rotate until the protrusion 305 does not coincide with the air duct inlet. At this time, the device can work normally. This design can scrape off the dust on the outer surface of the filter cartridge 104 and clean and discharge the dust from the inside of the device, and can restore the device to normal working state, so that the device can work for a long time without manual intervention.

[0044] The filtering method of the smoke filtering device of the electric heater comprises the following steps:

[0045] S1: When using the device, first install the device at the air inlet end of the electric heater, then introduce smoke into the interior of the ventilation shell 102 from the top opening of the ventilation shell 102, and the smoke entering the air duct will be filtered by the filter cartridge 104 and enter the interior thereof, and then be discharged from the bottom of the bottom plate 115;

[0046] S2: After the device has been used for a period of time, the filter cartridge 104 will gradually be blocked by the filtered dust. At this time, the smoke entering the bottom of the sliding baffle 105 through the air outlet 208 will push the sliding baffle 105 upward due to the increased air pressure, thereby driving the wind baffle 114 to move and block the air duct entrance;

[0047] S3: When the air duct is blocked, the smoke will push the air blocking plate 201 downwards, enter the interior of the filter cartridge 104, and then blow from the interior of the filter cartridge 104 to the exterior of the filter cartridge 104, blowing out the dust blocked inside the filter cartridge 104. The air blocking plate 201 moves downwards and the motor 303 will be started, thereby driving the filter cartridge 104 to scrape off the dust on its outer surface.

[0048] A specific application of this embodiment is:

[0049] When using the device, first install the device at the air inlet end of the electric heater, and then introduce smoke into the interior of the ventilation shell 102 from the top opening of the ventilation shell 102. Due to the blocking effect of the ventilation shell 102 and the filter cartridge 104, the smoke will enter the air duct formed between every two air guide plates 103. The smoke entering the air duct will be filtered by the filter cartridge 104 and enter its interior, and then be discharged from the bottom of the bottom plate 115. Since the path of the air duct is small, the smoke will flow faster and the air pressure will increase after entering the air duct, thereby increasing the speed of the smoke passing through the filter cartridge 104 and improving the filtration efficiency. In the above process, the smoke in the air duct In addition to passing through the filter cartridge 104, the smoke will also enter between the ventilation shell 102 and the outer shell 101 through the air outlet 208. Due to the effect of the smoke pressure, it will give the sliding baffle 105 an upward force. After the device has been used for a period of time, the filter cartridge 104 will gradually be blocked by the filtered dust. In this process, due to the blockage of the filter cartridge 104, its wind resistance will increase, which will make the smoke entering the air duct not have time to pass through the filter cartridge 104, causing the smoke to accumulate in the air duct, which will increase the air pressure. At this time, the smoke that enters the bottom of the sliding baffle 105 through the air outlet 208 will push the sliding baffle 105 upward due to the increased air pressure. The movable baffle 105 is pushed upward. The more seriously the filter cartridge 104 is blocked, the higher the sliding baffle 105 rises. The rising of the sliding baffle 105 will compress the spring 106 and drive the ring rod 107 to rise together. The rising of the ring rod 107 will compress the air in the fixed sleeve 108 and push the air into the fixed shell 109. The air pushed into the fixed shell 109 will give a thrust to the push rod 110. At this time, due to the blocking effect of the block 113, the push rod 110 will not be pushed. As the sliding baffle 105 drives the ring rod 107 to rise to a certain height, the air accumulated in the fixed shell 109 The pressure will overcome the elastic force of the second spring 112, and press the block 113 into the fixed box 111. Since there is no blocking effect of the block 113, the push rod 110 will be pushed a distance instantly, and the push rod 110 will drive the wind shield 114 to move together, thereby blocking the entrance of the air duct and preventing the smoke from entering the air duct. This design can improve the efficiency of smoke filtration by increasing the flow rate and pressure of the smoke, and can automatically detect the blockage of the filter cartridge 104. When the filter cartridge 104 is seriously blocked, the wind shield 114 can be automatically triggered to block the air duct, preventing damage to the device and facilitating subsequent work.

[0050] When the air duct is blocked, the smoke entering the ventilation shell 102 will push the air blocking plate 201 downward and compress the spring three 204. During the downward movement of the air blocking plate 201, the limit plate two 205 will move downward together through the fixing rod 202. The downward movement of the limit plate two 205 will drive the sealing plate 207 to move downward through the spring four 206. Before the air blocking plate 201 is completely separated from the filter cartridge 104, the sealing plate 207 will first block the opening of the bottom plate 115 to prevent the smoke from being discharged directly. When the air blocking plate 201 is completely separated from the filter cartridge 104, the smoke will pass between the filter cartridge 104 and the inner shell 200. At this time, as the air blocking plate 201 is completely separated from the filter cartridge 104, the smoke will pass into the space between the filter cartridge 104 and the inner shell 200. The smoke continues to flow in, and the smoke will be blown from the inside of the filter cartridge 104 to the outside of the filter cartridge 104, thereby blowing out the dust blocked inside the filter cartridge 104. After the smoke passes through the filter cartridge 104, it will continue to push up the sliding baffle 105 again through the air outlet 208, and the lifting height will be higher until the sliding baffle 105 no longer blocks the ash discharge port 209. At this time, the smoke will be discharged from the ash discharge port 209 with the blown dust. This design can clean the dust blocked inside the filter cartridge 104 by blowing the smoke from the inside of the filter cartridge 104 to the outside, and the dust can be discharged from the ash discharge port 209 to prevent it from accumulating in large quantities for a long time.

[0051] When the limit plate 205 moves downward, it will also drive the power connector 301 to move downward together. The power connector 301 will contact the connector 2 3011 early. At this time, a path is formed between the motor 303 and the power supply. When the limit plate 205 continues to move downward, the power connector 301 will compress the spring 5 302 and generate relative movement between the limit plate 205, so that the limit plate 205 can continue to move downward. After the path is formed between the motor 303 and the power supply, it will be started and drive some gears 304 to rotate. Some gears 304 will first idle. The idling time In order to clean the dust stuck inside the filter cartridge 104 during the above process, when the toothed part of the gear 304 meshes with the inner wall of the filter cartridge 104, the filter cartridge 104 will be driven to rotate. During the rotation of the filter cartridge 104, the dust attached to its outer surface will be scraped off by the air guide plate 103, thereby cleaning its outer surface. When the filter cartridge 104 rotates, the protrusion 305 will be driven to rotate together. When the protrusion 305 rotates, it will push the wind shield plate 114 to expose the air duct opening. At this time, due to the partial pressure of the air duct, the wind blocking plate 201 will move upward under the action of the spring 3 204. The smoke will pass through the air duct and finally be discharged from the ash outlet 209. When the smoke passes through the air duct, the dust scraped off the outer surface of the filter cartridge 104 in the above process will be taken out together. As the filter cartridge 104 rotates, the wind shield 114 will be pushed by the protrusion 305 to increase the exposed area of ​​the air duct entrance. The wind shield 201 will continue to move upward until the sealing plate 207 is separated from the bottom plate 115. At this time, the smoke will pass through the filter cartridge 104 and be discharged from the bottom of the bottom plate 115. The sliding baffle 105 and the push rod 110 will be moved by the spring 106. The filter cartridge 104 is gradually reset under the action of the spring five 302. At this time, the energized connector 301 will maintain contact with the connector two 3011 for a period of time during the upward movement of the limit plate two 205 due to the action of the spring five 302. During this period of time, the motor 303 will drive the filter cartridge 104 to continue to rotate until the protrusion 305 does not overlap with the air duct inlet. At this time, the device can work normally. This design can scrape off the dust on the outer surface of the filter cartridge 104 and clean and discharge the dust from the inside of the device, and can restore the device to a normal working state, so that the device can work for a long time without manual intervention.

[0052] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A smoke filter device for an electric heater, comprising a filter assembly (1), the filter assembly (1) comprising a housing (101), a ventilation housing (102) being fixedly connected to the inner wall of the housing (101), and an air guide plate (103) being fixedly connected to the inner wall of the ventilation housing (102), wherein: Also includes: An internal cleaning component (2), the internal cleaning component (2) comprising a wind blocking plate (201) arranged inside the ventilation shell (102), a fixing rod (202) being fixedly connected to the bottom of the wind blocking plate (201), and a limiting plate 1 (203) being fixedly connected to the outer surface of the fixing rod (202); An external cleaning component (3), the external cleaning component (3) comprising an electric connector (301) arranged at the lower side of the wind blocking plate (201), a spring five (302) being fixedly connected to the top of the electric connector (301), and a motor (303) being arranged at the lower side of the electric connector (301); The inner wall of the air guide plate (103) is rotatably connected to a filter cartridge (104); the outer surface of the ventilation shell (102) is slidably connected to a sliding baffle (105); the outer surface of the sliding baffle (105) is slidably connected to the inner wall of the outer shell (101); the top of the sliding baffle (105) is fixedly connected to a ring rod (107); and the outer surface of the sliding baffle (105) is sleeved with a spring 1 (106); The bottom of the spring 1 (106) is fixedly connected to the outer surface of the sliding baffle (105), the top of the spring 1 (106) is fixedly connected to the outer surface of the ventilation shell (102), the outer surface of the ring rod (107) is slidably connected to a fixed sleeve (108), the top of the fixed sleeve (108) is fixedly connected to the outer surface of the ventilation shell (102), the outer surface of the ventilation shell (102) is fixedly connected to a fixed shell (109), and the inner wall of the fixed shell (109) is slidably connected to a push rod (110); The push rod (110) is fixedly connected to a fixing box (111) on a side away from the ventilation shell (102); two clamping blocks (113) are slidably connected to the inner wall of the fixing box (111); the two clamping blocks (113) are fixedly connected to spring 2 (112) on the sides close to each other; the push rod (110) is fixedly connected to a windshield plate (114) on a side close to the ventilation shell (102); the outer surface of the windshield plate (114) is slidably connected to the inner wall of the ventilation shell (102); the inner wall of the outer shell (101) is fixedly connected to a bottom plate (115); the top of the bottom plate (115) is fixedly connected to the bottom of the ventilation shell (102); and the top of the bottom plate (115) is rotatably connected to the bottom of the filter cartridge (104).

2. A smoke filter device for an electric heater according to claim 1, characterized in that: The outer surface of the wind blocking plate (201) is slidably connected to the inner wall of the filter cartridge (104); the outer surface of the fixing rod (202) is slidably connected to the inner shell (200); the bottom of the inner shell (200) is fixedly connected to the top of the bottom plate (115); the inner wall of the limiting plate 1 (203) is slidably connected to the inner wall of the inner shell (200); and the bottom of the limiting plate 1 (203) is fixedly connected to a spring 3 (204).

3. A smoke filter device for an electric heater according to claim 2, characterized in that: The bottom of the spring three (204) is fixedly connected to the outer surface of the inner shell (200), the bottom of the fixing rod (202) is fixedly connected to the limiting plate two (205), the inner wall of the limiting plate two (205) is slidably connected to a sealing plate (207), the top of the sealing plate (207) is fixedly connected to the spring four (206), the top of the spring four (206) is fixedly connected to the bottom of the limiting plate two (205), the outer surface of the fixing rod (202) is provided with a plurality of air outlets (208), and the outer surface of the outer shell (101) is provided with a plurality of dust discharge ports (209).

4. A smoke filter device for an electric heater according to claim 3, characterized in that: The outer surface of the power connector (301) is slidably connected to the inner wall of the second limit plate (205), the top of the fifth spring (302) is fixedly connected to the outer surface of the second limit plate (205), the inner wall of the inner shell (200) is provided with a second connector (3011), the bottom of the inner shell (200) is fixedly connected to the top of the motor (303), the output end of the motor (303) is fixedly connected to a partial gear (304), the outer surface of the partial gear (304) is meshingly connected to the inner wall of the filter cartridge (104), the outer surface of the filter cartridge (104) is fixedly connected to a protrusion (305), and the outer surface of the protrusion (305) is rotatably connected to the inner wall.

5. A filtering method for a smoke filter device for an electric heater, using the smoke filter device as claimed in claim 4, characterized in that: The following steps are included: S1: When using the device, the device is first installed at the air inlet end of the electric heater, and then smoke is introduced into the interior of the ventilation shell (102) from the top opening of the ventilation shell (102). The smoke entering the air duct is filtered by the filter cartridge (104) and enters the interior thereof, and then is discharged from the bottom of the bottom plate (115); S2: After the device has been used for a period of time, the filter cartridge (104) will gradually be clogged by the filtered dust. At this time, the smoke entering the bottom of the sliding baffle (105) through the air outlet (208) will push the sliding baffle (105) upward due to the increased air pressure, thereby driving the wind baffle (114) to move and block the air duct entrance; S3: When the air duct is blocked, the smoke will push the air blocking plate (201) downwards and enter the interior of the filter cartridge (104), and then blow from the interior of the filter cartridge (104) to the exterior of the filter cartridge (104), thereby blowing out the dust blocked inside the filter cartridge (104). The air blocking plate (201) moves downwards and the motor (303) is started, thereby driving the filter cartridge (104) to scrape off the dust on its outer surface.

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