Desulfurization device with self-cleaning and backwashing functions

Abstract

The invention discloses a desulfurization device with self-cleaning and backwashing functions, and relates to the technical field of desulfurization devices.The desulfurization device comprises a tower body, a driving assembly, a cleaning assembly, a baffle assembly, a spraying assembly, a vibration assembly, a demister and a backwashing assembly.The desulfurization device comprises a tower body, a driving assembly, a cleaning assembly, a baffle assembly, a spraying assembly, a vibration assembly, a demister and a backwashing assembly.When a desulfurization tower conducts desulfurization, flue gas flows in from a flue gas inlet of the tower body; the wet flue gas passes through the spraying assembly and then is desulfurized, the demister removes liquid drops and particulate matters in the desulfurized wet flue gas, the flue gas is dried, and the dried flue gas passes through the vibration assembly and drives the vibration assembly to vibrate intermittently, so that the liquid drops and the particulate matters on the demister are vibrated off; when the desulfurizing tower stops desulfurizing and performs self-cleaning, the backwashing assembly flushes the demister, backwashing water after flushing falls onto the driving assembly, the driving assembly is matched with the baffle assembly to realize continuous reciprocating change of the liquid level, and the driving assembly drives the cleaning assembly to rotate along with change of the liquid level of a medium in the tower body to realize cleaning of the inner wall of the tower body.

Description

Technical Field

[0001] The present invention relates to the technical field of desulfurization devices, and specifically to a desulfurization device with a self-cleaning and backwashing function. Background Art

[0002] As an important device for reducing sulfur dioxide emissions, the efficient and stable operation of the desulfurization device is crucial for enterprises to meet environmental protection requirements. After long-term operation, the interior of traditional desulfurization devices is prone to accumulating dirt, impurities, sediment, etc., which requires manual cleaning at regular intervals. Manual cleaning is time-consuming and laborious, and there may also be potential safety hazards. Failure to clean in a timely manner will not only reduce the desulfurization efficiency, but may also lead to equipment failures and increased maintenance costs. Therefore, a desulfurization device with a self-cleaning and backwashing function is needed to ensure its continuous and stable operation to meet the strict requirements of environmental protection standards for waste gas emissions. Summary of the Invention

[0003] The purpose of the present invention is to provide a desulfurization device with a self-cleaning and backwashing function to solve the problems raised in the prior art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] The desulfurization device includes a tower body, a driving component, a cleaning component, a baffle component, a spraying component, a vibration component, a demister, and a backwashing component. The driving component is arranged at the inner bottom end of the tower body, and the driving component is slidably connected to the tower body. The cleaning component passes through the driving component and is rotatably connected to the bottom end of the tower body. The cleaning component and the driving component are connected by a ball screw. The baffle component is hinged to the upper end surface of the driving component, and the baffle component is fixedly connected to the inner wall of the tower body. One end of the spraying component is communicated with the bottom end of the tower body, and the other end of the spraying component is inserted into the upper end of the tower body. The backwashing component is arranged at the inner upper end of the tower body, and the backwashing component is in pipeline communication with an external cleaning pool. The demister is fixedly connected to the tower body and is arranged inside the tower body, between the backwashing component and the spraying component. The vibration component is arranged inside the tower body and is fixedly connected to the tower body.

[0006] The baffle assembly blocks a connecting pipe between the tower body and the external cleaning pool. A valve is provided on the connecting pipe. The valve is closed during the desulfurization process of the desulfurization tower and opened during the self-cleaning process of the desulfurization tower. During the normal desulfurization operation of the present invention, flue gas enters the tower body, and there is limestone slurry above the driving assembly. The spray assembly draws the limestone slurry for atomization spraying to desulfurize the flue gas. The sulfur in the flue gas reacts with the atomized slurry to generate calcium sulfite, and the calcium sulfite is then oxidized with the oxidizing air blown into the bottom of the tower body to form calcium sulfate. During the process of the slurry being drawn and the oxidizing air being blown into the bottom of the tower body, the slurry will continuously vibrate, and the vibrating slurry drives the driving assembly to reciprocate up and down. During the movement of the driving assembly, the cleaning assembly is driven to clean the inner wall of the tower body to a small extent. At the same time, during the oxidation process, some particles will rise with the flue gas, and the demister will defog the flue gas after desulfurization to remove droplets and particulate matter in the flue gas. The defogged flue gas passes through the vibration assembly , driving the vibration component to vibrate intermittently, and the vibration component transmits the vibration to the demister to remove the particles and water droplets remaining on the demister; when the present invention performs self-cleaning, first the internal slurry is completely emptied, the operation of the spray component and the introduction of flue gas are stopped, the backwash component draws water from the external cleaning pool to backwash the demister, and the backwashed water falls onto the driving component. As the liquid level in the tower body continues to rise, the driving component is continuously pressed down. After being pressed down to a certain height, the baffle component is pulled, and the backwashing water flows into the cleaning pool through the baffle component for filtration and recycling. The replenishment speed of the flushing water in the tower body is slower than the outflow speed of the flushing water. The liquid level in the tower body continues to decrease, and the driving component continues to rise accordingly. After rising a certain distance, the baffle component is pushed to rotate until the tower body and the cleaning pool are separated, and the liquid level starts to rise again. The above process is repeated, and when the driving component reciprocates up and down, the cleaning component is driven to rotate to achieve cleaning of the inner wall of the tower body.

[0007] Furthermore, a smoke inlet, a smoke outlet and a plurality of connection ports are arranged on the tower body, a column is arranged on the inner bottom end surface of the tower body, and the driving assembly is inserted into the column and is slidably connected with the column.

[0008] The smoke inlet is located between the drive assembly and the spray assembly, the smoke outlet is arranged at the top of the tower body, above the vibration assembly, and the multiple connecting ports on the tower body are located between the smoke inlet and the drive assembly. The setting of the multiple connecting ports facilitates the replenishment and outflow of different media in the tower body. One of the connecting ports can be connected and isolated with the tower body through the rotation of the baffle assembly.

[0009] Furthermore, the driving assembly includes a pressure plate and a driving spring, wherein the driving spring is arranged in the column tube, one end of the driving spring is fixedly connected to the bottom end surface of the column tube, the other end of the driving spring is fixedly connected to the bottom end of the pressure plate, the bottom end of the pressure plate is inserted into the column tube, the pressure plate and the column tube are slidably connected, the pressure plate and the inner wall of the tower body are slidably connected, the pressure plate completely separates the interior of the tower body, the pressure plate and the cleaning assembly are connected by a ball screw, and the upper end surface of the pressure plate is hinged to the baffle assembly.

[0010] When the desulfurization tower is desulfurizing, as the slurry in the tower body continues to oscillate, the pressure plate continuously reciprocates up and down, the driving spring is compressed and rebounded accordingly, and the pressure plate drives the cleaning assembly to reciprocate to clean the inner wall of the tower body slightly; when the desulfurization tower stops desulfurization and performs self-cleaning, as the liquid level on the pressure plate continues to increase, the pressure plate continues to drop, and the driving spring is continuously compressed. When the driving spring is compressed to a certain amount, the pressure plate pulls the baffle assembly to open, the tower body and the cleaning tank are connected, the backwash water is discharged, the liquid level continues to drop, the driving spring rebounds, and the pressure plate is lifted. After the pressure plate rises a certain distance, it pushes the baffle assembly to close the baffle assembly, separating the cleaning tank and the tower body, and the liquid level continues to rise. The above process is repeated. During the up and down reciprocating motion of the pressure plate, the cleaning assembly is driven to reciprocate to achieve complete cleaning of the inner wall of the tower body.

[0011] Furthermore, the cleaning assembly includes a rotating rod and a scraper rod, one end of the rotating rod is rotatably connected to the inner bottom end surface of the tower body, the other end of the rotating rod passes through the pressure plate, the rotating rod and the pressure plate are connected by a ball screw, the scraper rod and the other end of the rotating rod are fixedly connected, and the scraper rod fits the inner wall of the tower body.

[0012] Since the pressure plate and the rotating rod are connected by a ball screw, when the pressure plate reciprocates up and down due to liquid level changes or slurry vibrations, the pressure plate will drive the rotating rod to reciprocate, thereby enabling the scraper rod to clean the inner wall of the tower body.

[0013] Furthermore, the baffle assembly includes a rotating plate, a base and a connecting piece, wherein the base is arranged in the tower body and is connected to a connecting port of the tower body, the base and the tower body are fixedly connected, one side of the rotating plate is rotatably connected to the base, the other side of the rotating plate passes through one end of the connecting piece and is movably connected to the connecting piece, and the other end of the connecting piece is hinged to the upper end surface of the pressure plate.

[0014] Furthermore, a through hole is provided at one end of the rotating plate.

[0015] When the liquid level in the tower body continuously rises, the pressing plate continuously descends. After the pressing plate descends to a preset position, the connecting piece is pulled to make the rotating plate rotate. After the rotating plate rotates a certain angle, the through hole communicates with the base, enabling the backwashing water in the tower body to flow into the cleaning pool. Then the liquid level starts to drop, and the pressing plate rises accordingly. After rising to a certain height, the connecting piece is pushed to make the rotating plate rotate until the connection between the tower body and the cleaning pool is disconnected. Subsequently, the liquid level continues to rise, repeating the above process.

[0016] Further, a long strip-shaped through groove is provided on the connecting piece, and the other side of the rotating plate passes through the through groove and is movably connected to the connecting piece.

[0017] The through groove enables the pressing plate to start pulling the connecting piece to drive the rotation of the rotating plate only after descending a certain height after the liquid level rises, and enables the pressing plate to start pushing the connecting piece to drive the rotation of the rotating plate only after rising a certain height after the liquid level drops. This increases the reciprocating movement amplitude of the pressing plate up and down, and thus realizes the comprehensive cleaning of the inner wall of the tower body by the scraping rod.

[0018] Further, the vibration assembly includes a rotating seat, a fan, a special-shaped part, a slider, a push rod, a vibration spring, a transmission bar and a vibration seat. The rotating seat is arranged above the backwashing assembly and is fixedly connected to the inner wall of the tower body. The fan is rotatably connected to the rotating seat, and the rotation axis of the fan coincides with the central axis of the cylindrical section of the tower body. The special-shaped part is fixedly connected to the rotating shaft of the fan, and the side end face of the special-shaped part is always in contact with the push rod. The vibration seat is fixedly connected to the rotating seat. The slider is arranged in the vibration seat and is slidably connected to the vibration seat. One end of the vibration spring is fixedly connected to the slider, and the other end of the vibration spring is fixedly connected to the rotating seat. A chute is provided on the vibration seat, and the push rod passes through the chute and is rotatably connected to the slider. One end of the transmission bar is fixedly connected to the rotating seat, and the other end of the transmission bar is connected to the demister.

[0019] Further, the outer diameter of the special-shaped part gradually decreases along the rotation direction.

[0020] When the desulfurization tower is desulfurizing, the flue gas will drive the rotation of the fan when passing through the fan. The special-shaped part rotates accordingly and pushes the push rod, making the push rod and the slider continuously move away from the rotating shaft of the fan. The vibration spring is continuously stretched. When the special-shaped part rotates one week, the vibration spring resets and pulls back the slider. Under the pulling force of the vibration spring, the push rod and the slider respectively hit the special-shaped part and the vibration seat, generating vibrations that are transmitted to the transmission bar, and the transmission bar then transmits the vibrations to the demister, causing the demister to vibrate and shaking off the attached particulate matter and droplets to prevent blockage.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. When the liquid level in the tower body continuously rises, the pressing plate continuously descends. After the pressing plate descends to a preset position, the connecting piece is pulled to make the rotating plate rotate. After the rotating plate rotates a certain angle, the through hole communicates with the base, enabling the backwash water in the tower body to flow into the cleaning pool. Then the liquid level starts to drop, and the pressing plate rises accordingly. After rising to a certain height, the connecting piece is pushed to make the rotating plate rotate until the communication between the tower body and the cleaning pool is disconnected. Subsequently, the liquid level continues to rise, repeating the above process, realizing the reciprocating change of the liquid level in the tower body, promptly flushing the fallen impurities into the cleaning pool to prevent blockage during cleaning;

[0023] 2. The present invention utilizes the reciprocating change of the liquid level of the medium in the tower to achieve that when the liquid level on the pressing plate continuously increases, the pressing plate continuously descends, and the driving spring is continuously compressed. After the driving spring is compressed to a certain amount, the pressing plate pulls the baffle assembly to open, and the tower body communicates with the cleaning pool, and the backwash water is discharged. The liquid level continuously drops, and the driving spring rebounds to lift the pressing plate. After the pressing plate rises a certain distance, it pushes the baffle assembly to close, isolating the cleaning pool and the tower body. The liquid level continues to rise continuously, repeating the above process. During the reciprocating movement of the pressing plate, the reciprocating rotation of the cleaning component is driven to achieve the complete cleaning of the inner wall of the tower body;

[0024] 3. The present invention utilizes the rotation of the fan driven by the rising flue gas passing through the fan. The special-shaped part rotates accordingly and pushes the push rod, making the push rod and the slider continuously move away from the rotating shaft of the fan, and the vibration spring is continuously stretched. After the special-shaped part rotates one week, the vibration spring resets and pulls back the slider. Under the pulling force of the vibration spring, the push rod and the slider respectively hit the special-shaped part and the vibration seat, generating vibration and transmitting it to the transmission bar, and the transmission bar then transmits the vibration to the demister, causing the demister to vibrate and shake off the attached particulate matter and droplets to prevent blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall external structure of a desulfurization device with a self-cleaning and backwashing function according to the present invention;

[0026] Figure 2 It is a schematic cross-sectional view of the internal structure of a desulfurization device with a self-cleaning and backwashing function according to the present invention;

[0027] Figure 3 It is a schematic diagram of the baffle assembly structure of a desulfurization device with a self-cleaning and backwashing function according to the present invention;

[0028] Figure 4 It is a schematic diagram of the vibration assembly structure of a desulfurization device with a self-cleaning and backwashing function according to the present invention;

[0029] Figure 5 It is a partial structure schematic diagram of the vibration assembly of a desulfurization device with a self-cleaning and backwashing function according to the present invention;

[0030] Figure 6 Schematic connection diagram of the fan and the special-shaped part of a desulfurization device with self-cleaning and backwashing functions according to the present invention.

[0031] In the figure: 1, tower body; 2, drive assembly; 3, cleaning assembly; 4, baffle assembly; 5, spraying assembly; 6, vibration assembly; 7, demister; 8, backwashing assembly; 11, flue gas inlet; 12, flue gas outlet; 13, column cylinder; 21, pressing plate; 22, drive spring; 31, rotating rod; 32, scraping rod; 41, rotating plate; 42, base; 43, connecting piece; 44, through hole; 45, through groove; 61, rotating seat; 62, fan; 63, special-shaped part; 64, slider; 65, push rod; 66, vibration spring; 67, transmission bar; 68, vibration seat. Specific embodiments

[0032] Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment: As Figure 1 - Figure 6 shown, the present invention provides a technical solution for a desulfurization device with self-cleaning and backwashing functions:

[0034] As Figure 2 shown, the desulfurization device includes a tower body 1, a drive assembly 2, a cleaning assembly 3, a baffle assembly 4, a spraying assembly 5, a vibration assembly 6, a demister 7 and a backwashing assembly 8. The drive assembly 2 is arranged at the inner bottom end of the tower body 1. The drive assembly 2 is slidably connected to the tower body 1. The cleaning assembly 3 passes through the drive assembly 2 and is rotatably connected to the bottom end of the tower body 1. The cleaning assembly 3 and the drive assembly 2 are connected by a ball screw. The baffle assembly 4 is hinged to the upper end surface of the drive assembly 2. The baffle assembly 4 is fixedly connected to the inner wall of the tower body 1. One end of the spraying assembly 5 is communicated with the bottom end of the tower body 1. The other end of the spraying assembly 5 is inserted into the upper end of the tower body 1. The backwashing assembly 8 is arranged at the inner upper end of the tower body 1. The backwashing assembly 8 is connected to an external cleaning pool through a pipeline. The demister 7 is fixedly connected to the tower body 1. The demister 7 is arranged inside the tower body 1, between the backwashing assembly 8 and the spraying assembly 5. The vibration assembly 6 is arranged inside the tower body 1 and is fixedly connected to the tower body 1.

[0035] The baffle component 4 blocks a connecting pipe between the tower body 1 and the external cleaning pool. A valve is provided on the connecting pipe, which is closed during the desulfurization process of the desulfurization tower and opened during the self-cleaning process of the desulfurization tower. In the normal desulfurization operation process of the present invention, flue gas enters the tower body 1. Above the driving component 2 is limestone slurry. The spraying component 5 pumps out the limestone slurry for atomized spraying to carry out desulfurization treatment on the flue gas. Sulfur in the flue gas reacts with the atomized slurry to form calcium sulfite, and the calcium sulfite is further oxidized by the oxidation air blown into the bottom of the tower body 1 to form calcium sulfate. During the process of pumping the slurry and blowing the oxidation air, the slurry will continuously generate vibrations, and the vibrating slurry drives the driving component 2 to move up and down reciprocally. During the movement of the driving component 2, it drives the cleaning component 3 to slightly clean the inner wall of the tower body 1. At the same time, during the oxidation process, some particles will rise with the flue gas. The demister 7 will carry out demisting treatment on the desulfurized flue gas to remove droplets and particulate matter in the flue gas. The demisted flue gas passes through the vibration component 6, driving the vibration component 6 to vibrate intermittently. The vibration component 6 transmits the vibration to the demister 7 to shake off the particulate matter and water droplets remaining on the demister 7; when the present invention conducts self-cleaning, first empty all the internal slurry, stop the operation of the spraying component 5 and the introduction of flue gas. The backwashing component 8 pumps out the water in the external cleaning pool to conduct backwashing on the demister 7. The backwashed water falls onto the driving component 2. As the liquid level in the tower body 1 continuously rises, the driving component 2 is continuously pressed down. After being pressed down a certain height, the baffle component 4 is pulled, and the backwashing water flows into the cleaning pool through the baffle component 4 for filtration and recycling. The replenishment speed of the flushing water in the tower body 1 is slower than the outflow speed of the flushing water, and the liquid level in the tower body 1 continuously decreases. The driving component 2 rises accordingly. After rising a certain distance, it pushes the baffle component 4 to rotate until the tower body 1 and the cleaning pool are separated. The liquid level starts to rise again, repeating the above process. When the driving component 2 moves up and down reciprocally, it drives the cleaning component 3 to rotate to realize the cleaning of the inner wall of the tower body 1.

[0036] As Figure 1 and Figure 2 shown, the tower body 1 is provided with a flue gas inlet 11, a flue gas outlet 12 and a plurality of connection ports. A cylindrical barrel 13 is provided on the inner bottom end surface of the tower body 1. The driving component 2 is inserted into the cylindrical barrel 13 and is slidably connected to the cylindrical barrel 13.

[0037] The flue gas inlet 11 is located between the driving component 2 and the spraying component 5. The flue gas outlet 12 is arranged at the top of the tower body 1, above the vibration component 6. The plurality of connection ports on the tower body 1 are located between the flue gas inlet 11 and the driving component 2. The arrangement of the plurality of connection ports facilitates the replenishment and outflow of different media in the tower body 1. One of the connection ports can be connected and separated from the tower body 1 through the rotation of the baffle component 4.

[0038] As Figure 2 and Figure 3As shown, the driving assembly 2 includes a pressure plate 21 and a driving spring 22, and the driving spring 22 is arranged in the column tube 13, one end of the driving spring 22 is fixedly connected to the bottom end surface of the column tube 13, and the other end of the driving spring 22 is fixedly connected to the bottom end of the pressure plate 21, and the bottom end of the pressure plate 21 is inserted into the column tube 13, and the pressure plate 21 is slidably connected to the column tube 13, and the pressure plate 21 is slidably connected to the inner wall of the tower body 1, and the pressure plate 21 completely separates the inside of the tower body 1, and the pressure plate 21 and the cleaning assembly 3 are connected by a ball screw, and the upper end surface of the pressure plate 21 is hinged to the baffle assembly 4.

[0039] During desulfurization in the desulfurization tower, as the slurry in the tower body 1 continues to oscillate, the pressure plate 21 continuously reciprocates up and down, the driving spring 22 is compressed and rebounded accordingly, and the pressure plate 21 drives the cleaning component 3 to reciprocate to clean the inner wall of the tower body 1 to a small extent; when the desulfurization tower stops desulfurization for self-cleaning, as the liquid level on the pressure plate 21 continues to increase, the pressure plate 21 continues to drop, the driving spring 22 is continuously compressed, and when the driving spring 22 is compressed to a certain amount, the pressure plate 21 pulls the baffle assembly 4 to open, the tower body 1 and the cleaning tank are connected, the backwash water is discharged, the liquid level continues to drop, the driving spring 22 rebounds, and the pressure plate 21 is lifted. After the pressure plate 21 rises a certain distance, it pushes the baffle assembly 4 to close the baffle assembly 4, separating the cleaning tank and the tower body 1, and the liquid level continues to rise. Repeat the above process, in the process of the pressure plate 21 reciprocating up and down, drive the cleaning component 3 to reciprocate to achieve complete cleaning of the inner wall of the tower body 1.

[0040] like Figure 2 As shown, the cleaning assembly 3 includes a rotating rod 31 and a scraper rod 32. One end of the rotating rod 31 is rotatably connected to the inner bottom end surface of the tower body 1, and the other end of the rotating rod 31 passes through the pressure plate 21. The rotating rod 31 and the pressure plate 21 are connected by a ball screw. The scraper rod 32 is fixedly connected to the other end of the rotating rod 31, and the scraper rod 32 fits the inner wall of the tower body 1.

[0041] Since the pressure plate 21 and the rotating rod 31 are connected by a ball screw, when the pressure plate 21 reciprocates up and down due to liquid level changes or slurry vibrations, the pressure plate 21 will drive the rotating rod 31 to reciprocate, thereby enabling the scraper rod 32 to clean the inner wall of the tower body 1.

[0042] like Figure 3 As shown, the baffle assembly 4 includes a rotating plate 41, a base 42 and a connecting member 43. The base 42 is arranged in the tower body 1 and is connected to a connecting port of the tower body 1. The base 42 is fixedly connected to the tower body 1. One side of the rotating plate 41 is rotatably connected to the base 42. The other side of the rotating plate 41 passes through one end of the connecting member 43 and is movably connected to the connecting member 43. The other end of the connecting member 43 is hinged to the upper end surface of the pressure plate 21.

[0043] likeFigure 3 As shown, a through hole 44 is provided at one end of the rotating plate 41.

[0044] When the liquid level in the tower body 1 continuously rises, the pressing plate 21 continuously descends. After the pressing plate 21 descends to a preset position, the connecting member 43 is pulled to rotate the rotating plate 41. After the rotating plate 41 rotates by a certain angle, the through hole 44 communicates with the base 42, enabling the backwashing water in the tower body 1 to flow into the cleaning pool, and the liquid level starts to drop. The pressing plate 21 rises accordingly. After rising to a certain height, the connecting member 43 is pushed to rotate the rotating plate 41 until the communication between the tower body 1 and the cleaning pool is disconnected. Subsequently, the liquid level continues to rise, repeating the above process.

[0045] As Figure 3 shown, a long strip-shaped through groove 45 is provided on the connecting member 43, and the other side of the rotating plate 41 passes through the through groove 45 and is movably connected to the connecting member 43.

[0046] The through groove 45 enables the pressing plate 21 to start pulling the connecting member 43 to drive the rotation of the rotating plate 41 only after descending a certain height when the liquid level rises, and enables the pressing plate 21 to start pushing the connecting member 43 to drive the rotation of the rotating plate 41 only after rising a certain height when the liquid level drops, improving the reciprocating movement amplitude of the pressing plate 21 up and down, and thus realizing the comprehensive cleaning of the inner wall of the tower body 1 by the scraping rod 32.

[0047] As Figure 4 - Figure 6 shown, the vibration assembly 6 includes a rotating seat 61, a fan 62, a special-shaped member 63, a slider 64, a push rod 65, a vibration spring 66, a transmission bar 67 and a vibration seat 68. The rotating seat 61 is arranged above the backwashing assembly 8 and is fixedly connected to the inner wall of the tower body 1. The fan 62 is rotatably connected to the rotating seat 61. The rotation axis of the fan 62 coincides with the central axis of the cylindrical section of the tower body 1. The special-shaped member 63 is fixedly connected to the rotating shaft of the fan 62. The side end face of the special-shaped member 63 is always in contact with the push rod 65. The vibration seat 68 is fixedly connected to the rotating seat 61. The slider 64 is arranged in the vibration seat 68 and is slidably connected to the vibration seat 68. One end of the vibration spring 66 is fixedly connected to the slider 64, and the other end of the vibration spring 66 is fixedly connected to the rotating seat 61. A chute is provided on the vibration seat 68. The push rod 65 passes through the chute and is rotatably connected to the slider 64. One end of the transmission bar 67 is fixedly connected to the rotating seat 61, and the other end of the transmission bar 67 is connected to the demister 7.

[0048] As Figure 4 and Figure 6 shown, the outer diameter of the special-shaped member 63 gradually decreases along the rotation direction.

[0049] When the desulfurization tower is desulfurizing, the flue gas drives the rotation of the fan 62 when passing through the fan 62. The special-shaped part 63 rotates accordingly and pushes the push rod 65, causing the push rod 65 and the slider 64 to continuously move away from the rotating shaft of the fan 62. The vibration spring 66 is continuously stretched. When the special-shaped part 63 rotates one week, the vibration spring 66 resets and pulls back the slider 64. Under the pulling force of the vibration spring 66, the push rod 65 and the slider 64 respectively hit the special-shaped part 63 and the vibration seat 68, generating vibrations that are transmitted to the transmission bar 67. The transmission bar 67 then transmits the vibrations to the demister 7, causing the demister 7 to vibrate, shaking off the attached particulate matter and droplets to prevent blockage.

[0050] The working principle of the present invention: During the normal desulfurization operation of the present invention, the flue gas enters the tower body 1. Above the driving component 2 is limestone slurry. The spraying component 5 pumps out the limestone slurry for atomized spraying to desulfurize the flue gas. The sulfur in the flue gas reacts with the atomized slurry to form calcium sulfite, and the calcium sulfite is further oxidized by the oxidation air blown into the bottom of the tower body 1 to form calcium sulfate. During the process of pumping out the slurry and blowing in the oxidation air, the slurry will continuously generate oscillations. The oscillating slurry drives the driving component 2 to move up and down reciprocally. During the movement of the driving component 2, it drives the cleaning component 3 to slightly clean the inner wall of the tower body 1. At the same time, during the oxidation process, some particles will rise with the flue gas. The demister 7 will demist the desulfurized flue gas, removing the droplets and particulate matter in the flue gas. The demisted flue gas passes through the vibration component 6, driving the vibration component 6 to vibrate intermittently. The vibration component 6 transmits the vibration to the demister 7, shaking off the residual particulate matter and water droplets on the demister 7; When the present invention performs self-cleaning, first empty all the slurry inside, stop the operation of the spraying component 5 and the introduction of the flue gas. The backwashing component 8 pumps out the water in the external cleaning pool to backwash the demister 7. The backwashed water falls onto the driving component 2. As the liquid level in the tower body 1 continuously rises, the driving component 2 is continuously pressed down. After being pressed down a certain height, the baffle component 4 is pulled, and the backwashing water flows into the cleaning pool through the baffle component 4 for filtration and recycling. The replenishment speed of the washing water in the tower body 1 is slower than the outflow speed of the washing water, and the liquid level in the tower body 1 continuously decreases. The driving component 2 rises accordingly. After rising a certain distance, it pushes the baffle component 4 to rotate until the tower body 1 and the cleaning pool are separated. The liquid level starts to rise again, repeating the above process. When the driving component 2 moves up and down in a cyclic manner, it drives the cleaning component 3 to rotate, realizing the cleaning of the inner wall of the tower body 1.

[0051] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A desulfurization device with self-cleaning backwashing function, characterized in that: The desulfurization device comprises a tower body (1), a driving assembly (2), a cleaning assembly (3), a baffle assembly (4), a spray assembly (5), a vibration assembly (6), a demister (7) and a backwash assembly (8), wherein the driving assembly (2) is arranged at the inner bottom end of the tower body (1), the driving assembly (2) and the tower body (1) are slidably connected, the cleaning assembly (3) passes through the driving assembly (2) and is rotatably connected to the bottom end of the tower body (1), the cleaning assembly (3) and the driving assembly (2) are connected by a ball screw, the baffle assembly (4) and the upper end surface of the driving assembly (2) are hinged, and the baffle assembly (4) is The component (4) is fixedly connected to the inner wall of the tower body (1), one end of the spray component (5) is connected to the bottom end of the tower body (1), the other end of the spray component (5) is inserted into the upper end of the tower body (1), the backwash component (8) is arranged at the upper end of the interior of the tower body (1), the backwash component (8) is connected to an external cleaning pool pipeline, the demister (7) is fixedly connected to the tower body (1), the demister (7) is arranged in the tower body (1) and is located between the backwash component (8) and the spray component (5), and the vibration component (6) is arranged in the tower body (1) and is fixedly connected to the tower body (1).

2. A desulfurization device with self-cleaning backwashing function according to claim 1, characterized in that: The tower body (1) is provided with a smoke inlet (11), a smoke outlet (12) and a plurality of connection ports, a column (13) is provided on the inner bottom end surface of the tower body (1), and the drive assembly (2) is inserted into the column (13) and is slidably connected to the column (13).

3. A desulfurization device with self-cleaning backwashing function according to claim 2, characterized in that: The driving assembly (2) comprises a pressure plate (21) and a driving spring (22), wherein the driving spring (22) is arranged in the column tube (13), one end of the driving spring (22) is fixedly connected to the bottom end surface of the column tube (13), the other end of the driving spring (22) is fixedly connected to the bottom end of the pressure plate (21), the bottom end of the pressure plate (21) is inserted into the column tube (13), the pressure plate (21) and the column tube (13) are slidably connected, the pressure plate (21) and the inner wall of the tower body (1) are slidably connected, the pressure plate (21) completely separates the inside of the tower body (1), the pressure plate (21) and the cleaning assembly (3) are connected by a ball screw, and the upper end surface of the pressure plate (21) is hinged to the baffle assembly (4).

4. A desulfurization device with self-cleaning backwashing function according to claim 3, characterized in that: The cleaning assembly (3) comprises a rotating rod (31) and a scraping rod (32); one end of the rotating rod (31) is rotatably connected to the inner bottom end surface of the tower body (1); the other end of the rotating rod (31) passes through a pressure plate (21); the rotating rod (31) and the pressure plate (21) are connected by a ball screw; the scraping rod (32) and the other end of the rotating rod (31) are fixedly connected; and the scraping rod (32) fits the inner wall of the tower body (1).

5. A desulfurization device with self-cleaning backwashing function according to claim 4, characterized in that: The baffle assembly (4) comprises a rotating plate (41), a base (42) and a connecting member (43); the base (42) is arranged in the tower body (1) and is connected to a connecting port of the tower body (1); the base (42) and the tower body (1) are fixedly connected; one side of the rotating plate (41) is rotatably connected to the base (42); the other side of the rotating plate (41) passes through one end of the connecting member (43) and is movably connected to the connecting member (43); the other end of the connecting member (43) is hinged to the upper end surface of the pressure plate (21).

6. A desulfurization device with self-cleaning and backwashing function according to claim 5, characterized in that: A through hole (44) is provided at one end of the rotating plate (41).

7. A desulfurization device with self-cleaning backwashing function according to claim 6, characterized in that: The connecting member (43) is provided with a long strip through slot (45), and the other side of the rotating plate (41) passes through the through slot (45) and is movably connected to the connecting member (43).

8. A desulfurization device with self-cleaning and backwashing function according to claim 1, characterized in that: The vibration assembly (6) comprises a rotating seat (61), a fan (62), a special-shaped piece (63), a slider (64), a push rod (65), a vibration spring (66), a transmission bar (67) and a vibration seat (68); the rotating seat (61) is arranged above the backwash assembly (8) and is fixedly connected to the inner wall of the tower body (1); the fan (62) and the rotating seat (61) are rotationally connected; the rotation axis of the fan (62) coincides with the central axis of the cylindrical section of the tower body (1); the special-shaped piece (63) and the rotating shaft of the fan (62) are fixedly connected; the side end surface of the special-shaped piece (63) is always in contact with the push rod (67). The rod (65) is connected, the vibration seat (68) and the rotating seat (61) are fixedly connected, the slider (64) is arranged in the vibration seat (68) and is slidably connected to the vibration seat (68), one end of the vibration spring (66) is fixedly connected to the slider (64), the other end of the vibration spring (66) is fixedly connected to the rotating seat (61), a slide groove is arranged on the vibration seat (68), the push rod (65) passes through the slide groove and is rotatably connected to the slider (64), one end of the transmission bar (67) is fixedly connected to the rotating seat (61), and the other end of the transmission bar (67) is connected to the defogger (7).

9. A desulfurization device with self-cleaning and backwashing function according to claim 8, characterized in that: The outer diameter of the special-shaped part (63) gradually decreases along the rotation direction.

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