A flue gas dust purification device for drying silicon materials

Abstract

The present invention discloses a flue gas dust purification device for drying silicon materials, which is applied in the field of flue gas treatment. The present invention is provided with a sealing mechanism, a dust purification component, a cleaning component, an air inlet groove, a driving component, an air inlet pipe, an exhaust pipe, a liquid injection pipe and a liquid discharge pipe; a single purification cylinder is provided and two coarse filters are separated inside it. With the cooperation of the driving component, the positions of the two coarse filters can be swapped, so that the coarse filters do not need to be replaced. Moreover, the coarse filters are soaked with a cleaning agent injected through the liquid injection pipe. Driven by the driving component, the cleaning wool roller brushes the coarse filters. Finally, it is flushed with clean water and discharged from the device, which can actively clean the coarse filters without disassembly. And it can also be cleaned during the operation of the device. When the coarse filters are blocked, there is no need to stop the machine to disassemble and replace or clean the coarse filters, which can save the time of disassembly, installation and replacement, avoid the waste of shutdown time, and improve the purification efficiency of the coarse filter.

Description

Technical Field

[0001] The present invention relates to the field of dust purification, and particularly to a flue gas dust purification device for drying silicon materials. Background Art

[0002] Silicon materials refer to the raw materials used to manufacture silicon wafers, which are the basic materials for semiconductor devices such as solar photovoltaic cells and integrated circuits. Silicon materials mainly include: polysilicon, monocrystalline silicon, silicon wafer slices, etc., among which polysilicon is a type of silicon material. Currently, silicon materials need to be dried during the processing. When the silicon materials are dried, flue gas is generated, and there is dust in the flue gas. In order to prevent the dust in the flue gas from escaping and polluting the environment, a purification device with a filter element is used to filter out the dust in the flue gas. The filter element of the purification device includes a primary filter and a fine filter (the fine filter realizes the adsorption and interception of other impurities in the flue gas through an atomization tower). Among them, the fine filter is in a liquid state and requires secondary treatment, while the coarse filter uses a coarse filter element, and the coarse filter element can be reused after cleaning. For the coarse filter element used in the existing flue gas dust purification device for silicon materials, there is a blockage situation during use. To clean the filter element, the coarse filter element needs to be disassembled, then cleaned and reinstalled. This process will waste a lot of time, thus affecting the efficiency of flue gas dust purification. Therefore, in order to save the replacement time of the coarse filter element and improve the purification efficiency of the flue gas generated during the drying of silicon materials, we propose a flue gas dust purification device for drying silicon materials. Summary of the Invention

[0003] The purpose of the present invention is to provide a flue gas dust purification device for drying silicon materials, and its advantage is that it can clean the coarse filter element during the operation of the device.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions: A flue gas dust purification device for drying silicon materials, including a housing, a sealing mechanism is installed inside the housing, a dust purification component is installed inside the sealing mechanism, a cleaning component is provided at the bottom of the dust purification component, a driving component is installed at one end of the housing, an air inlet groove is opened inside the housing, an air inlet pipe and a liquid discharge pipe are communicated on one side of the air inlet groove, and an exhaust pipe is communicated on the surface of the housing;

[0005] A liquid injection pipe is also communicated on the surface of the housing.

[0006] With the above technical solution, by setting a sealing mechanism, a dust purification component, a cleaning component, an air inlet groove, a driving component, an air inlet pipe, an exhaust pipe, a liquid injection pipe and a liquid discharge pipe; a single purification cylinder is set and two coarse filters are separated inside it. The driving component is used to drive the position of the two coarse filters to be swapped, so that the coarse filters do not need to be replaced. Moreover, the coarse filters are soaked with a cleaning agent through the liquid injection pipe. Driven by the driving component, the cleaning wool roller brushes the coarse filters. Finally, the coarse filters are flushed with clean water, and the dust cleaned is discharged from the equipment through the liquid discharge pipe. The coarse filters can be actively cleaned without disassembly. Moreover, the equipment can also be cleaned during operation. Therefore, when the coarse filters are blocked, there is no need to stop the machine to disassemble and replace or clean the coarse filters, which can save the time for disassembling, installing and replacing the coarse filters, avoid wasting the downtime, and ensure the cleaning efficiency.

[0007] The present invention is further configured as follows: The sealing mechanism includes a fixed collar one and a fixed collar two. The surfaces of the fixed collar one and the fixed collar two are fixedly sleeved with the inside of the housing, and sealing rings are fixedly connected to the inner walls of the fixed collar one and the fixed collar two.

[0008] With the above technical solution, through the setting of the sealing mechanism, it is used to form a seal, so that the flue gas can only pass upward through the coarse filter after coarse filtration and is discharged through the exhaust pipe instead of downward;

[0009] Both the fixed collar one and the fixed collar two are fixedly connected to the inner wall of the housing, and the seals inside them are all in sealed sliding connection with the surface of the purification cylinder. Except for the rotation of the purification cylinder, the positions in the purification cylinder without coarse filters can all be sealed by the seals; when a single coarse filter is working, the sealing mechanism can ensure the sealing of the flue gas.

[0010] The present invention is further configured as follows: Two connecting frames are fixedly connected to one side of the fixed collar one. A sealing frame is fixedly connected to one side of the sealing ring. Sealing strips one and two are fixedly connected to the inner walls of the connecting frame and the sealing frame respectively;

[0011] Both ends of the sealing strip one are fixedly connected to the sealing rings inside the fixed collar one and the fixed collar two respectively; one side of the sealing frame close to the sealing ring inside the fixed collar two is fixedly connected to the sealing ring inside the fixed collar two;

[0012] The outer sides of the connecting frame and the sealing frame are both fixedly connected to the housing.

[0013] With the above technical solution, through the setting of the fixed collar one, it is used to seal the surface and one end of the housing without affecting the rotation of the housing;

[0014] The sealing frame and the second sealing strip are used to seal between the purification cylinder and the outer shell. One side of the sealing frame contacts the partition plate, which can prevent the interiors of the two coarse filters from being connected; moreover, the second sealing strip is fixedly connected to the sealing ring inside the fixed collar two, so there will be no emission between them.

[0015] The inner walls of the connecting frame and the sealing frame are respectively fixedly connected with a first sealing strip to seal the surface of the purification cylinder and ensure that the flue gas will not escape; and the first sealing strip is fixedly connected to the sealing ring inside the fixed collar one, ensuring the sealing performance of the connection between the sealing ring inside the fixed collar one and the first sealing strip.

[0016] During the coarse filtration of the flue gas by a single coarse filter, it can prevent the flue gas from escaping downward and contacting the bottom coarse filter. In the clean state, the interior of the outer shell is filled with a cleaning agent or clean water, and the flue gas will not penetrate the cleaning agent or water. The flue gas can only pass upward through the coarse filter and be discharged through the exhaust pipe.

[0017] The present invention is further configured as: the dust purification assembly includes a purification cylinder. Coarse filters are fixedly connected to both the upper surface and the lower surface of the purification cylinder. A partition plate is fixedly sleeved inside the purification cylinder, and the partition plate divides the two coarse filters into upper and lower independent filter cavities.

[0018] The inner wall of the sealing ring is in sealed sliding contact with the surface of the purification cylinder.

[0019] One side of the first sealing strip close to the purification cylinder is in sealed sliding contact with the surface of the purification cylinder.

[0020] One side of the second sealing strip close to the purification cylinder is in sealed sliding contact with the surface of the purification cylinder.

[0021] By adopting the above technical solution, through the setting of the dust purification assembly, it is used to coarsely filter the dust in the flue gas generated during the drying of silicon materials.

[0022] Firstly, coarse filters are arranged on both the upper and lower surfaces of the purification cylinder. A partition plate is arranged between the two coarse filters to divide the two coarse filters into two spaces for coarsely filtering the dust in the flue gas. The coarse filter space corresponding to the air inlet groove is the current use state, while the other coarse filter space is in a clean state or unused state under the partition of the fixed collar one, the sealing mechanism, the sealing ring and the partition plate.

[0023] The present invention is further configured as: the cleaning assembly includes a cleaning wool roller. A connecting rod is fixedly sleeved inside the cleaning wool roller. The connecting rod is rotatably connected to the interiors of the fixed collar one and the fixed collar two through waterproof sealed bearings respectively, and the surface of the connecting rod is also rotatably connected to the outer shell through a waterproof sealed bearing;

[0024] The surface of the cleaning wool roller contacts the coarse filter.

[0025] With the above technical solution, through the setting of the cleaning component, it is used to cooperate with the cleaning agent to brush and clean the coarse filter element; the bristles of the cleaning wool roller can penetrate the filter holes of the coarse filter element and push out the impurities in the internal filter element from the filter holes of the coarse filter element; the connecting rod is rotationally connected to the outer shell through a waterproof sealing bearing, a fixed collar one, a sealing ring, and there will be no leakage of the cleaning agent or clean water to the outside; at the same time, the connecting rod is also connected to the second pulley, and the output end of the driving motor rotates to drive the first pulley to rotate. The first pulley drives the second pulley to rotate through a belt, and the second pulley can drive the connecting rod and the cleaning wool roller to rotate. The rotation of the cleaning wool roller is more beneficial to increasing the cleaning effect on the coarse filter element.

[0026] The present invention is further configured as: the driving component includes a driving motor, the output end of the driving motor is rotationally connected to the outer shell through a waterproof sealing bearing, a connecting rod is installed at the output end of the driving motor through a coupling, one end of the connecting rod is fixedly connected to the purification cylinder, a first pulley is fixedly sleeved at the output end of the driving motor, the first pulley is connected to a second pulley through a belt drive, and the inside of the second pulley is fixedly sleeved with the connecting rod.

[0027] With the above technical solution, through the setting of the driving component, it is used to drive the rotation of the purification cylinder and also to drive the cleaning component to rotate; it should be noted that the rotation direction of the output end of the driving motor is controlled by the controller, and the control of the rotation direction and time of the motor output end by the controller is currently an existing technology and will not be elaborated here.

[0028] Specifically, for the two coarse filter elements inside the purification cylinder, only the coarse filter element corresponding to the air inlet groove will be used to coarsely filter the dust in the flue gas generated by drying the silicon material during use, while the other coarse filter element is in contact with the cleaning wool roller; when one coarse filter element needs to be cleaned, the positions of the two coarse filter elements need to be swapped; by starting the driving motor, the output end of the driving motor can drive the connecting rod to rotate through the coupling, and the connecting rod can drive the purification cylinder to rotate. The rotation of the purification cylinder will drive the two coarse filter elements inside it to rotate. By swapping the positions of the two coarse filter elements, the coarse filter element that was originally in contact with the cleaning wool roller will correspond to the air inlet groove, and the coarse filter element that was originally corresponding to the air inlet groove will be in contact with the cleaning wool roller; the coarse filter element that was originally in contact with the cleaning wool roller is the cleaned coarse filter element, which can directly participate in coarsely filtering the dust in the flue gas of silicon material drying and intercept the coarse dust;

[0029] And the current coarse filter element in contact with the cleaning wool roller needs to be cleaned; by injecting the cleaning agent into the inside of the outer shell through the liquid injection pipe, the cleaning agent can soak the coarse filter element, separating or loosening the dust adhered to the surface of the coarse filter element, and by controlling the output end of the driving motor to continuously rotate clockwise, counterclockwise, clockwise, counterclockwise... by the controller, the purification cylinder can follow and rotate, and the clockwise and counterclockwise rotation times can be set in advance by the controller;

[0030] Whether rotating clockwise or counterclockwise, it is based on reaching the connection frame position at the center of the bottom of the coarse filter element in the cleaner as the standard. After reaching the above position, the output end of the drive motor changes from clockwise rotation to counterclockwise rotation, and counterclockwise rotation changes to clockwise rotation; each rotation process of the coarse filter element at the top is only half, and the other half corresponds to the air inlet groove, so it will not affect the coarse filtration and purification of the flue gas. At the same time, the height of the cleaner will not reach the position of the air inlet groove, so the situation where the cleaner enters the air inlet groove and the air inlet pipe will not occur.

[0031] During the rotation of the coarse filter element, the output end of the drive motor will also drive the first pulley to rotate. The first pulley drives the second pulley to rotate through a belt, and the second pulley drives the connecting rod inside it and the cleaning roller connected to the connecting rod to rotate. The rotation of the cleaning roller can penetrate the filter holes of the coarse filter element to push out the blocked dust and impurities inside, so as to achieve the function of cleaning the coarse filter element;

[0032] In the inclined state of the outer shell, the control valve of the drain pipe is opened, and the cleaner and the cleaned impurities can be directly discharged through the drain pipe. Then, clean water is injected into the inside of the outer shell through the injection pipe to rinse the coarse filter element and the cleaning roller again, and the residual dust and the cleaner are discharged through the drain pipe to complete the cleaning.

[0033] The present invention is further configured as: control valves are installed inside both the injection pipe and the drain pipe.

[0034] Adopting the above technical solution, the number of control valves is two, which are respectively used to control the internal flow and closure of the injection pipe and the drain pipe;

[0035] When the device is installed, the inclination angle of its drain pipe and the outer shell should be at least greater than 5° (such as Figure 1 ), and the function of the inclination is to facilitate the reverse flow of water to the drain pipe and facilitate the quick discharge of the inside of the outer shell through the drain pipe;

[0036] The function of the injection pipe is to introduce the cleaner and clean water into the inside of the outer shell; the introduction of the cleaner is used to soak the coarse filter element to separate the impurities coarsely filtered on the surface of the coarse filter element from the coarse filter element; the introduction of clean water is to rinse the impurities separated from the coarse filter element and discharge the impurities from the inside of the outer shell under the inclined installation of the device.

[0037] To sum up, the present invention has the following beneficial effects:

[0038] The present invention is provided with a sealing mechanism, a dust purification component, a cleaning component, an air inlet groove, a driving component, an air inlet pipe, an exhaust pipe, a liquid injection pipe and a liquid discharge pipe; a single purification cylinder is provided and two coarse filters are separated inside it. With the cooperation of the driving component, the positions of the two coarse filters can be swapped, so that the coarse filters do not need to be replaced. Moreover, the coarse filters are soaked with a cleaning agent injected through the liquid injection pipe. Driven by the driving component, the cleaning wool roller brushes the coarse filters, and finally is flushed with clean water. Then, the dust cleaned is discharged from the device through the liquid discharge pipe, which can actively clean the coarse filters without disassembly. Moreover, the cleaning can also be carried out during the operation of the device. Therefore, when the coarse filters are blocked, there is no need to stop the machine to disassemble and replace or clean the coarse filters, which can save the time for disassembling, installing and replacing the coarse filters, avoid the waste of downtime, and improve the coarse filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic structural diagram of the present invention;

[0040] Figure 2 is a schematic diagram of the sealing frame, sealing strip II, partition plate and purification cylinder of the present invention;

[0041] Figure 3 is a schematic diagram of the sealing mechanism and fixing collar I of the present invention;

[0042] Figure 4 is a schematic diagram of the corresponding positions of the air inlet groove, air inlet pipe and outer shell of the present invention;

[0043] Figure 5 is a schematic diagram of the connection between fixing collar I, sealing ring and purification cylinder of the present invention;

[0044] Figure 6 is a side sectional view of the outer shell of the present invention;

[0045] Figure 7 is a schematic diagram of the driving component of the present invention;

[0046] Figure 8 is a schematic diagram of the connection between the connecting rod, fixing collar I and fixing collar II of the present invention;

[0047] Figure 9 is a side view of the purification cylinder of the present invention.

[0048] Reference Signs:

[0049] 1. Outer shell;

[0050] 2. Sealing mechanism; 21. Fixing collar I; 211. Connection frame; 212. Sealing frame; 213. Sealing strip I; 214. Sealing strip II; 22. Fixing collar II; 23. Sealing ring;

[0051] 3. Dust purification component; 31. Purification cylinder; 32. Coarse filter element; 33. Partition board;

[0052] 4. Cleaning component; 41. Cleaning wool roller; 42. Connecting rod;

[0053] 5. Air inlet groove;

[0054] 6. Driving component; 61. Driving motor; 62. Connecting rod; 63. Pulley one; 64. Pulley two;

[0055] 7. Air inlet pipe; 8. Exhaust pipe; 9. Liquid injection pipe; 10. Liquid discharge pipe. Detailed implementation mode

[0056] The present invention will be further described in detail below with reference to the accompanying drawings.

[0057] Embodiment 1:

[0058] Refer to Figures 1-9 , a flue gas dust purification device for drying silicon materials, including a housing 1, a sealing mechanism 2 is installed inside the housing 1, a dust purification component 3 is installed inside the sealing mechanism 2, a cleaning component 4 is arranged at the bottom of the dust purification component 3, a driving component 6 is installed at one end of the housing 1, an air inlet groove 5 is opened inside the housing 1, an air inlet pipe 7 and a liquid discharge pipe 10 are communicated with one side of the air inlet groove 5, and an exhaust pipe 8 is communicated with the surface of the housing 1; a liquid injection pipe 9 is also communicated with the surface of the housing 1; by setting the sealing mechanism 2, the dust purification component 3, the cleaning component 4, the air inlet groove 5, the driving component 6, the air inlet pipe 7, the exhaust pipe 8, the liquid injection pipe 9 and the liquid discharge pipe 10; a single purification cylinder 31 is set and two coarse filter elements 32 are separated inside it, and the positions of the two coarse filter elements 32 can be exchanged by being driven by the driving component 6, so that the coarse filter elements 32 do not need to be replaced. Moreover, the coarse filter elements 32 are soaked with a cleaning agent by injecting through the liquid injection pipe 9. Driven by the driving component 6, the cleaning wool roller 41 brushes the coarse filter elements 32, and finally is flushed with clean water. The dust cleaned is discharged from the device through the liquid discharge pipe 10, and the coarse filter elements 32 can be actively cleaned without disassembly. Moreover, the cleaning can also be carried out during the operation of the device. Therefore, when the coarse filter elements 32 are blocked, there is no need to stop the machine to disassemble and replace or clean the coarse filter elements 32, which can save the time for disassembling, installing and replacing the coarse filter elements 32, avoid the waste of downtime, and improve the coarse filtration efficiency.

[0059] Further, the sealing mechanism 2 includes a first fixed collar 21 and a second fixed collar 22. The surfaces of the first fixed collar 21 and the second fixed collar 22 are fixedly sleeved inside the housing 1. Sealing rings 23 are fixedly connected to the inner walls of the first fixed collar 21 and the second fixed collar 22. Through the arrangement of the sealing mechanism 2, it is used to form a seal so that the flue gas cannot go downward and can only go upward. After being roughly filtered by the coarse filter element 32, it is discharged through the exhaust pipe 8. Both the first fixed collar 21 and the second fixed collar 22 are fixedly connected to the inner wall of the housing 1, and the seals inside them are all in sealed sliding connection with the surface of the purification cylinder 31. Except that the purification cylinder 31 can rotate, the positions in the purification cylinder 31 where there is no coarse filter element 32 can be sealed by the seals. When a single coarse filter element 32 is working, the sealing mechanism 2 can ensure the tightness of the flue gas.

[0060] Further, two connecting frames 211 are fixedly connected to one side of the first fixed collar 21. A sealing frame 212 is fixedly connected to one side of the sealing ring 23. A first sealing strip 213 and a second sealing strip 214 are respectively fixedly connected to the inner walls of the connecting frame 211 and the sealing frame 212. The two ends of the first sealing strip 213 are respectively fixedly connected to the sealing rings 23 inside the first fixed collar 21 and the second fixed collar 22. The side of the sealing frame 212 close to the sealing ring 23 inside the second fixed collar 22 is fixedly connected to the sealing ring 23 inside the second fixed collar 22. The outer sides of both the connecting frame 211 and the sealing frame 212 are fixedly connected to the housing 1. Through the arrangement of the first fixed collar 21, it is used to seal the surface and one end of the housing 1 without affecting the rotation of the housing 1. The sealing frame 212 and the second sealing strip 214 are used to seal between the purification cylinder 31 and the housing 1. The sealing frame 212 contacts one side of the partition plate 33, which can prevent the interiors of the two coarse filter elements 32 from being connected. And since the second sealing strip 214 is fixedly connected to the sealing ring 23 inside the second fixed collar 22, there will be no leakage between them. The first sealing strip 213 and the second sealing strip 214 are respectively fixedly connected to the inner walls of the connecting frame 211 and the sealing frame 212 to seal the surface of the purification cylinder 31 to ensure that the flue gas will not leak. And since the first sealing strip 213 is fixedly connected to the sealing ring 23 inside the first fixed collar 21, the tightness of the connection between the sealing ring 23 inside the first fixed collar 21 and the first sealing strip 213 is ensured. During the process of a single coarse filter element 32 roughly filtering the flue gas, it can prevent the flue gas from leaking downward and contacting the bottom coarse filter element 32. In the cleaning state, the inside of the housing 1 is filled with a cleaning agent or clean water, and the flue gas will not penetrate through the cleaning agent or water. The flue gas can only go upward through the coarse filter element 32 and be discharged through the exhaust pipe 8.

[0061] Furthermore, the dust purification component 3 includes a purification cylinder 31. Coarse filters 32 are fixedly connected to both the upper surface and the lower surface of the purification cylinder 31. A partition plate 33 is fixedly sleeved inside the purification cylinder 31, and the partition plate 33 divides the two coarse filters 32 into upper and lower independent filter chambers; the inner wall of the sealing ring 23 is in sealed sliding contact with the surface of the purification cylinder 31; one side of the first sealing strip 213 close to the purification cylinder 31 is in sealed sliding contact with the surface of the purification cylinder 31; one side of the second sealing strip 214 close to the purification cylinder 31 is in sealed sliding contact with the surface of the purification cylinder 31; through the arrangement of the dust purification component 3, it is used to roughly filter the dust in the flue gas generated during the drying of silicon materials. First, coarse filters 32 are arranged on both the upper and lower surfaces of the purification cylinder 31, and a partition plate 33 is arranged between the two coarse filters 32 to divide the two coarse filters 32 into two spaces for roughly filtering the dust in the flue gas. The coarse filter space corresponding to the air inlet groove 5 is the current use state, while the other coarse filter space is in a clean state or an unused state under the separation of the fixed collar one 21, the sealing mechanism 2, the sealing ring 23, and the partition plate 33.

[0062] Furthermore, the cleaning component 4 includes a cleaning brush roller 41. A connecting rod 42 is fixedly sleeved inside the cleaning brush roller 41. The connecting rod 42 is rotatably connected to the inside of the fixed collar one 21 and the fixed collar two 22 through waterproof sealed bearings respectively, and the surface of the connecting rod 42 is also rotatably connected to the housing 1 through a waterproof sealed bearing; the surface of the cleaning brush roller 41 is in contact with the coarse filter 32; through the arrangement of the cleaning component 4, it is used to cooperate with a cleaning agent to brush and clean the coarse filter 32; the bristles of the cleaning brush roller 41 can penetrate the filter holes of the coarse filter 32 to push out the impurities inside the filter element from the filter holes of the coarse filter 32; the connecting rod 42 is rotatably connected to the fixed collar one 21, the sealing ring 23, and the housing 1 through waterproof sealed bearings, and there will be no leakage of the cleaning agent or clean water to the outside; at the same time, the connecting rod 42 is also connected to the pulley two 64. The output end of the driving motor 61 rotates to drive the pulley one 63 to rotate. The pulley one 63 drives the pulley two 64 to rotate through a belt, and the pulley two 64 can drive the connecting rod 42 and the cleaning brush roller 41 to rotate. The rotation of the cleaning brush roller 41 is more beneficial to increasing the cleaning effect on the coarse filter 32.

[0063] Further, the driving assembly 6 includes a driving motor 61. The output end of the driving motor 61 is rotatably connected to the housing 1 through a waterproof sealed bearing. A connecting rod 62 is installed at the output end of the driving motor 61 through a coupling. One end of the connecting rod 62 is fixedly connected to the purification cylinder 31. A first pulley 63 is fixedly sleeved at the output end of the driving motor 61. The first pulley 63 is connected to a second pulley 64 through a belt drive. The inside of the second pulley 64 is fixedly sleeved with a connecting rod 42. Through the setting of the driving assembly 6, it is used to drive the rotation of the purification cylinder 31 and also used to drive the cleaning assembly 4 to rotate. It should be noted that the rotation direction of the output end of the driving motor 61 is controlled by the controller. The control of the rotation direction and time of the motor output end by the controller is currently existing technology and will not be elaborated here. Specifically, for the two coarse filters 32 inside the purification cylinder 31, only the coarse filter 32 corresponding to the air inlet groove 5 is used to coarsely filter the dust in the flue gas generated by the silicon material drying during use, while the other coarse filter 32 is in contact with the cleaning wool roller 41. When one coarse filter 32 needs to be cleaned, the positions of the two coarse filters 32 need to be swapped. By starting the driving motor 61, the output end of the driving motor 61 can drive the connecting rod 62 to rotate through the coupling, and the connecting rod 62 can drive the purification cylinder 31 to rotate. The rotation of the purification cylinder 31 will drive the two coarse filters 32 inside it to rotate. By swapping the positions of the two coarse filters 32, the coarse filter 32 that was originally in contact with the cleaning wool roller 41 will correspond to the air inlet groove 5, and the coarse filter 32 that was originally corresponding to the air inlet groove 5 will be in contact with the cleaning wool roller 41. The coarse filter 32 that was originally in contact with the cleaning wool roller 41 is the cleaned coarse filter 32, which can directly participate in the coarse filtration of the dust in the silicon material drying flue gas and intercept the coarse dust. The current coarse filter 32 in contact with the cleaning wool roller 41 needs to be cleaned. By injecting the cleaning agent into the inside of the housing 1 through the liquid injection pipe 9, the cleaning agent can soak the coarse filter 32, separating or loosening the dust adhered to the surface of the coarse filter 32. By controlling the output end of the driving motor 61 to continuously rotate clockwise, counterclockwise, clockwise, counterclockwise... by the controller, the purification cylinder 31 can follow and rotate. The clockwise and counterclockwise rotation times can be set in advance by the controller. Whether rotating clockwise or counterclockwise, it is based on the center of the bottom of the coarse filter 32 in the cleaning agent reaching the position of the connection frame 211. After reaching the above position, the output end of the driving motor 61 changes from clockwise rotation to counterclockwise rotation, and the counterclockwise rotation changes to clockwise rotation. Each rotation process of the coarse filter 32 at the top is only half, and the other half will correspond to the air inlet groove 5, so it will not affect the coarse filtration of the flue gas. At the same time, the height of the cleaning agent will not reach the position of the air inlet groove 5, so the situation where the cleaning agent enters the air inlet groove 5 and the air inlet pipe 7 will not occur.During the rotation of the coarse filter element 32, the output end of the driving motor 61 will also drive the first pulley 63 to rotate. The first pulley 63 drives the second pulley 64 to rotate through belt transmission. The second pulley 64 drives the connecting rod 42 inside it and the cleaning brush roller 41 connected to the connecting rod 42 to rotate. The rotation of the cleaning brush roller 41 can penetrate the filter holes of the coarse filter element 32 to push out the blocked dust and impurities inside, so as to achieve the function of cleaning the coarse filter element 32. When the housing 1 is in an inclined state, the control valve of the drain pipe 10 is opened, and the cleaning agent and the cleaned impurities can be directly discharged through the drain pipe 10. Then, clean water is injected into the interior of the housing 1 through the injection pipe 9 to wash the coarse filter element 32 and the cleaning brush roller 41 again, and the residual dust and cleaning agent are discharged through the drain pipe 10 to complete the cleaning.

[0064] Furthermore, control valves are installed inside both the injection pipe 9 and the drain pipe 10. The number of control valves is two, which are respectively used to control the internal flow and closure of the injection pipe 9 and the drain pipe 10. When the equipment is installed, the inclination angle of the drain pipe 10 and the housing 1 should be at least greater than 5° (such as Figure 1 ), and the function of inclination is to facilitate the reverse flow of water to the drain pipe, so as to facilitate the quick discharge of the interior of the housing by the drain pipe. The function of the injection pipe 9 is to introduce the cleaning agent and clean water into the interior of the housing 1. The introduction of the cleaning agent is used to soak the coarse filter element 32 to separate the impurities filtered roughly on the surface of the coarse filter element 32 from the coarse filter element 32. The introduction of clean water is to wash the impurities separated from the coarse filter element 32 and discharge the impurities from the interior of the housing 1 when the equipment is in an inclined state.

[0065] Working principle:

[0066] Connect the intake pipe 7 to the silicon material drying flue and connect the exhaust pipe 8 to the spray purification tower;

[0067] First, the flue gas enters the intake slot 5 through the intake pipe 7 and then enters the space at the top of the two filtering spaces separated by the partition plate 33. The flue gas flows upward and passes through the coarse filter element 32, and part of the large impurities are intercepted by the coarse filter element 32. Subsequently, it enters the spray purification tower through the exhaust pipe 8 for fine filtration and is finally discharged.

[0068] The coarse filter element 32 will become blocked during long-term use. At this time, the output end of the driving motor 61 can be controlled to rotate through the controller. The output end of the driving motor 61 drives the coupling, the coupling drives the connecting rod 62 to rotate, the connecting rod 62 drives the purification cylinder 31 to rotate, and the two coarse filter elements 32 inside it are swapped in position by the rotation of the purification cylinder 31, so that the filtration and purification work can continue without stopping for replacement;

[0069] And the blocked coarse filter element 32 that has been replaced needs to be cleaned;

[0070] During cleaning, first inject a cleaning agent into the interior of the housing 1 through the liquid injection pipe 9, and use the corrosiveness of the cleaning agent to the dust to strip or loosen the dust and the coarse filter element 32;

[0071] After that, set the reciprocating rotation time of the output end of the drive motor 61 through the controller, so that the output end of the drive motor 61 rotates clockwise and then converts to counterclockwise rotation. Continuously drive the purification cylinder 31 to rotate reciprocally clockwise and counterclockwise through the drive motor 61, so that the cleaning wool roller 41 continuously rubs the coarse filter element 32. The bristles on the surface of the cleaning wool roller 41 will also continuously penetrate the filter holes inside the coarse filter element 32 and push out the internal dust, so that the dust blocked inside the coarse filter element 32 can be thoroughly cleaned; at the same time, as the output end of the drive motor 61 rotates, the output end of the drive motor 61 will also drive the first pulley 63 to rotate. The first pulley 63 drives the second pulley 64 to rotate through the belt, and the second pulley 64 can drive the connecting rod 42 and the cleaning wool roller 41 to rotate and clean the coarse filter element 32;

[0072] And each clockwise and counterclockwise rotation only needs to reach one-fourth of the overall diameter of the purification cylinder 31;

[0073] After cleaning, the two coarse filter elements 32 are reset, and the cleaning agent and the cleaned dust are discharged through the drain pipe 10. Clean water is injected into the interior of the housing 1, and the above operation is repeated again to wash away the residual dust and the cleaning agent. Discharging the clean water and the dust and cleaning agent left in the clean water can complete the cleaning, and wait for the next cleaning replacement.

[0074] During the above process of cleaning the coarse filter element 32, the air inlet groove 5 will always correspond to the coarse filter element 32 to ensure the normal purification of the flue gas. Although the flue gas will enter the two coarse filter elements 32 during the cleaning process, the dust in the flue gas can also be directly intercepted by the cleaning agent or water where the bottom coarse filter element 32 is located, and it also has the function of purifying the flue gas.

[0075] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A flue gas dust purification device for drying silicon materials, comprising a housing (1), characterized in that, Inside the housing (1), a sealing mechanism (2) is installed. Inside the sealing mechanism (2), a dust purification component (3) is installed. At the bottom of the dust purification component (3), a cleaning component (4) is provided. At one end of the housing (1), a driving component (6) is installed. Inside the housing (1), an air inlet groove (5) is formed. One side of the air inlet groove (5) communicates with an air inlet pipe (7) and a liquid discharge pipe (10). On the surface of the housing (1), an exhaust pipe (8) communicates; On the surface of the housing (1), a liquid injection pipe (9) also communicates; The sealing mechanism (2) includes a fixed collar one (21) and a fixed collar two (22). The surfaces of the fixed collar one (21) and the fixed collar two (22) are fixedly sleeved inside the housing (1). Sealing rings (23) are fixedly connected to the inner walls of the fixed collar one (21) and the fixed collar two (22); On one side of the fixed collar one (21), two connecting frames (211) are fixedly connected. On one side of the sealing ring (23), a sealing frame (212) is fixedly connected. Sealing strips one (213) and sealing strips two (214) are fixedly connected to the inner walls of the connecting frame (211) and the sealing frame (212) respectively; Both ends of the sealing strip one (213) are fixedly connected to the sealing rings (23) inside the fixed collar one (21) and the fixed collar two (22); One side of the sealing frame (212) close to the sealing ring (23) inside the fixed collar two (22) is fixedly connected to the sealing ring (23) inside the fixed collar two (22); The outer sides of the connecting frame (211) and the sealing frame (212) are fixedly connected to the housing (1); The dust purification component (3) includes a purification cylinder (31). Coarse filter elements (32) are fixedly connected to the upper surface and the lower surface of the purification cylinder (31). A partition plate (33) is fixedly sleeved inside the purification cylinder (31). The partition plate (33) divides the two coarse filter elements (32) into upper and lower independent filter cavities; The inner wall of the sealing ring (23) is in sealed sliding contact with the surface of the purification cylinder (31); One side of the sealing strip one (213) close to the purification cylinder (31) is in sealed sliding contact with the surface of the purification cylinder (31); One side of the sealing strip two (214) close to the purification cylinder (31) is in sealed sliding contact with the surface of the purification cylinder (31).

2. A flue gas dust purification device for drying silicon materials according to claim 1, characterized in that, The cleaning component (4) includes a cleaning wool roller (41). A connecting rod (42) is fixedly sleeved inside the cleaning wool roller (41). The connecting rod (42) is rotatably connected to the inside of the fixed collar one (21) and the fixed collar two (22) through waterproof sealing bearings respectively. The surface of the connecting rod (42) is also rotatably connected to the housing (1) through a waterproof sealing bearing; The surface of the cleaning wool roller (41) contacts the coarse filter element (32).

3. The flue gas dust purification equipment for silicon material drying according to claim 2, characterized in that, The driving component (6) includes a driving motor (61). The output end of the driving motor (61) is rotatably connected to the housing (1) through a waterproof and sealed bearing. A connecting rod (62) is installed at the output end of the driving motor (61) through a coupling. One end of the connecting rod (62) is fixedly connected to the purification cylinder (31). A first pulley (63) is fixedly sleeved at the output end of the driving motor (61). The first pulley (63) is connected to a second pulley (64) through a belt drive. The inside of the second pulley (64) is fixedly sleeved with a connecting rod (42).

4. A flue gas dust purification device for drying silicon material according to claim 1, characterized in that, Control valves are installed inside both the liquid injection pipe (9) and the liquid discharge pipe (10).

Images