Dust removal device and dust removal system
The dust removal system, which combines a spray tower and a circulating water tank, uses spray components to capture dust and agitation components to prevent deposition, thus solving the dust deposition problem and achieving efficient dust removal and continuous production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GEM & ECOPRO CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-05-26
AI Technical Summary
During the manufacturing process of lithium-ion battery cathode material precursors, dust in the exhaust gas is deposited at the bottom of the circulating water tank, leading to increased workload for operators and decreased production efficiency.
The dust removal system combines a spray tower and a circulating water tank. The spray unit sprays downwards to capture dust, and the agitator unit makes the water in the circulating water tank flow vertically to prevent dust from settling.
It effectively prevents dust from accumulating at the bottom of the circulating water tank, reduces the workload of operators, avoids downtime for cleaning, and improves production efficiency.
Smart Images
Figure CN224270614U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dust removal equipment technology, and in particular to a dust removal device and dust removal system. Background Technology
[0002] Lithium-ion batteries are a new generation of high-performance, green, and high-energy batteries, and have become one of the key areas of high-tech development. The main components of lithium-ion batteries include electrolytes, separators, and positive and negative electrode materials, with the positive electrode material directly affecting the battery's performance. During the manufacturing process of the positive electrode precursor, a large amount of exhaust gas containing dust is generated. To prevent environmental pollution from this exhaust gas, it needs to be treated by a dust removal system before being released.
[0003] To improve dust removal efficiency, the dust removal system includes a spray tower and a circulating water tank. Water from the circulating water tank is used to spray dust-containing exhaust gas in the spray tower. However, the dust in the exhaust gas tends to settle and accumulate at the bottom of the circulating water tank after entering with the water. This requires operators to dig it out, which increases the workload of the operators and necessitates machine shutdown, affecting production efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a dust removal device and system that can prevent dust from accumulating at the bottom of the circulating water tank, reduce the workload of operators, and eliminate the need for cleaning and shutdown, thus avoiding impact on production efficiency.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A dust removal device, comprising:
[0007] A spray tower, wherein a spray dust removal component is provided inside the spray tower, and the spray tower is provided with an air inlet and an exhaust outlet, wherein the air inlet is located below the spray dust removal component and the exhaust outlet is located above the spray dust removal component;
[0008] A circulating water tank is connected to the bottom of the spray tower. An agitator is installed inside the circulating water tank, and the agitator is configured to make the water in the circulating water tank flow vertically.
[0009] The circulation component includes a circulation pump and a water supply pipe. The circulation pump is connected to the interior of the circulation water tank. One end of the water supply pipe is connected to the spray dust removal component, and the other end of the water supply pipe is connected to the circulation pump.
[0010] As an optional solution for the above-mentioned dust removal device, the circulating water tank includes a drain outlet, and a metal content sensor is installed inside the circulating water tank. When the metal content in the water in the circulating water tank exceeds a first threshold, the drain outlet opens or the dust removal device alarms.
[0011] As an optional solution to the above-mentioned dust removal device, the dust removal device further includes a water replenishment component, which is connected to the circulating water tank and is configured to replenish water into the circulating water tank.
[0012] As an optional solution for the above-mentioned dust removal device, the water replenishment component includes a water replenishment pipe, a level gauge, and a solenoid valve. The water replenishment pipe is connected to the circulating water tank, and the solenoid valve is installed on the water replenishment pipe to control the opening and closing of the water replenishment pipe. The level gauge is installed in the circulating water tank and is communicatively connected to the solenoid valve. When the water level in the circulating water tank is lower than a second threshold, the solenoid valve opens; when the water level in the circulating water tank is higher than a third threshold, the solenoid valve closes.
[0013] As an optional solution to the above-mentioned dust removal device, the dust removal device further includes an air inlet pipe, which passes through the air inlet into the spray tower and is sealed to the air inlet. The portion of the air inlet pipe located inside the spray tower is inclined downwards.
[0014] As an optional solution for the above-mentioned dust removal device, the spray dust removal component includes a flow equalization layer and a plurality of spray heads. The flow equalization layer is located below the plurality of spray heads and has a loose porous structure.
[0015] As an optional solution for the above-mentioned dust removal device, a support plate is provided inside the spray tower, the flow equalization layer is provided on the support plate, and the support plate has ventilation holes along the vertical direction, with each ventilation hole corresponding to a spray head.
[0016] As an optional solution for the aforementioned dust removal device, a plurality of spray dust removal components are installed inside the spray tower in the vertical direction, and all of the plurality of spray dust removal components are connected to the water supply pipe.
[0017] As an optional solution to the aforementioned dust removal device, an exhaust fan is provided at the top of the spray tower.
[0018] A dust removal system includes the aforementioned dust removal device and a primary dust removal component. The air inlet is connected to the primary dust removal component. The primary dust removal component includes a plurality of dust collectors spaced apart, and the pore size of the filter holes of the plurality of dust collectors decreases sequentially along the gas flow direction.
[0019] The beneficial effects of this utility model are:
[0020] This invention provides a dust removal device and system. In the dust removal device, the circulation pump of the circulation component pumps water from the circulating water tank to the spray component in the spray tower. The water is sprayed downwards through the spray component, ensuring sufficient contact between the spray and the dust particles in the exhaust gas entering the spray tower through the inlet. The dust particles are captured by the spray and enter the circulating water tank with the spray, thus purifying the dust in the exhaust gas. After the stirring component in the circulating water tank is activated, it ensures that the water in the tank flows vertically, preventing dust from settling within the tank.
[0021] This dust removal device can prevent dust from accumulating at the bottom of the circulating water tank, reducing the workload of operators, and does not require shutdown for cleaning, thus avoiding impact on production efficiency. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the dust removal system provided by this utility model.
[0023] In the picture:
[0024] 1. Dust removal device; 11. Spray tower; 111. Air inlet; 112. Exhaust outlet; 113. Support plate; 1131. Vent hole; 12. Spray dust removal assembly; 121. Spray head; 122. Flow equalization layer; 13. Circulating water tank; 131. Drain outlet; 14. Mixing assembly; 141. First mixing component; 142. Second mixing component; 15. Water replenishment assembly; 151. Water replenishment pipe; 152. Solenoid valve; 153. Level gauge; 1531. Connecting rod; 1532. Float; 16. Air inlet pipe; 17. Exhaust fan; 18. Circulation assembly; 181. Circulation pump; 182. Water supply pipe;
[0025] 2. Primary dust collection components; 21. Dust collector; 22. Ton bag. Detailed Implementation
[0026] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.
[0028] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0031] Lithium-ion batteries are a new generation of high-performance, green, and high-energy batteries, and have become one of the key areas of high-tech development. The main components of lithium-ion batteries include electrolytes, separators, and positive and negative electrode materials, with the positive electrode material directly affecting the battery's performance. During the manufacturing process of the positive electrode precursor, a large amount of exhaust gas containing dust is generated. To prevent environmental pollution from this exhaust gas, it needs to be treated by a dust removal system before being released.
[0032] like Figure 1As shown, this embodiment provides a dust removal system, which includes a primary dust removal component 2. The dust removal device 1 is connected to the primary dust removal component 2. The primary dust removal component 2 includes a plurality of dust collectors 21 arranged at intervals, and the pore size of the filter holes of the plurality of dust collectors 21 decreases sequentially along the gas flow direction.
[0033] When the exhaust gas containing dust enters the primary dust removal component 2, it will pass through multiple dust collectors 21 in sequence. The dust particles will be intercepted by the multiple dust collectors 21 according to their size, which will greatly reduce the dust content in the exhaust gas.
[0034] It is worth noting that the primary dust collection component 2 also includes a ton bag 22, which is located below multiple dust collectors 21. Dust blocked by the dust collectors 21 can fall into the ton bag 22, thereby collecting and recycling the dust.
[0035] However, removing dust from exhaust gas by filtration alone is not very effective, as some smaller dust particles can still pass through the dust collector 21, thus impacting the environment.
[0036] like Figure 1 As shown, to solve the above problems, the dust removal system also includes a dust removal device 1. The dust removal device 1 includes a spray tower 11, a circulating water tank, and a circulation component 18. The spray tower 11 is equipped with a spray dust removal component 12. The spray tower 11 is provided with an air inlet 111 and an exhaust outlet 112. The air inlet 111 is located below the spray dust removal component 12 and is connected to the primary dust removal component 2. The exhaust outlet 112 is located above the spray dust removal component 12. The circulating water tank 13 is connected to the bottom of the spray tower 11. The circulation component 18 includes a circulation pump 181 and a water supply pipe 182. The circulation pump 181 is connected to the interior of the circulating water tank 13. One end of the water supply pipe 182 is connected to the spray dust removal component 12, and the other end of the water supply pipe 182 is connected to the circulation pump 181.
[0037] In the dust removal device 1, the exhaust gas after primary filtration enters the spray tower 11 through the air inlet 111. The circulation pump 181 of the circulation component 18 pumps the water in the circulating water tank 13 to the spray component in the spray tower 11. The water is sprayed downwards through the spray component, and the spray can fully contact the dust in the exhaust gas, so that the dust is captured by the spray and enters the circulating water tank 13 with the spray, thereby completing the purification of the dust in the exhaust gas. Then the purified exhaust gas is discharged from the spray tower 11 through the exhaust port 112.
[0038] It is worth noting that the dust in the exhaust gas generated during the precursor preparation process is mostly metal dust. After entering the circulating water tank with water, the metal dust tends to settle and accumulate at the bottom of the tank, making it difficult to clean. It requires the machine to be stopped and the operator to dig it out, which increases the workload of the operator and affects production efficiency.
[0039] like Figure 1 As shown, to solve the above problems, the dust removal device 1 provided in this embodiment is equipped with a stirring assembly 14 in the circulating water tank 13. The stirring assembly 14 is configured to make the water in the circulating water tank 13 flow vertically. After the stirring assembly 14 in the circulating water tank 13 is started, it can make the water in the circulating water tank 13 flow vertically, thus preventing dust from settling in the circulating water tank 13.
[0040] The dust removal device 1 can prevent dust from accumulating at the bottom of the circulating water tank, reducing the workload of operators, and does not require cleaning or shutdown, thus avoiding impact on production efficiency.
[0041] In this embodiment, the stirring assembly 14 includes a first stirring element 141 and a second stirring element 142. Both the first stirring element 141 and the second stirring element 142 are disposed in the circulating water tank 13. The first stirring element 141 is configured to drive the liquid to flow radially, and the second stirring element 142 is configured to drive the liquid to flow axially. The first stirring element 141 is located below the second stirring element 142.
[0042] When the first agitator 141 and the second agitator 142 are started, the second agitator 142 can cause the water at the bottom of the circulating water tank 13 to flow radially to spread out, and the first agitator 141 can cause the water in the circulating water tank 13 to move axially, so that the metal dust is evenly spread in the circulating water tank 13 and the metal dust is prevented from being deposited at the bottom of the circulating water tank 13.
[0043] Specifically, the first stirring element 141 is a flat-blade turbine propeller, which includes a first rotating part and a plurality of flat blades spaced circumferentially around the outer periphery of the first rotating part. Each flat blade extends radially along the flat-blade turbine propeller. When the flat-blade turbine propeller rotates, the plurality of flat blades can drive the water in the circulating water tank 13 to diffuse outward radially. In this embodiment, the flat-blade turbine propeller is provided with a total of six flat blades.
[0044] In order to enable the water in the circulating water tank 13 to flow axially, the second agitator 142 is an inclined blade impeller. The inclined blade impeller includes a second rotating part and a plurality of inclined blades spaced axially on the outer periphery of the second rotating part. When the inclined blade impeller rotates, the plurality of inclined blades can drive the water in the circulating water tank 13 to flow axially. In this embodiment, the inclined blade impeller is provided with a total of three inclined blades.
[0045] In this embodiment, the first agitator 141 is located downstream of the second agitator 142, driving the water flow direction within the circulating water tank 13 along the second agitator 142. This arrangement allows the water in the circulating water tank 13 to flow towards the first agitator 141 under the drive of the second agitator 142, and is driven radially outward by the first agitator 141. The first agitator 141 and the second agitator 142 enable the water in the circulating water tank 13 to flow in a unidirectional annular pattern, making the water flow in the circulating water tank 13 smoother.
[0046] In some embodiments, the stirring assembly 14 includes a rotating roller, which is rotatably disposed in the circulating water tank 13 and the axial direction of the rotating roller is arranged in the horizontal direction. The side wall of the rotating roller is provided with a plurality of stirring blades. When the rotating roller rotates, the water in the circulating water tank 13 is driven to rise or fall by the stirring blades, thereby avoiding the deposition of metal dust.
[0047] like Figure 1 As shown, the circulating water tank 13 includes a drain outlet 131. A metal content sensor is installed inside the circulating water tank 13. When the metal content in the water in the circulating water tank 13 exceeds a first threshold, the drain outlet 131 opens. It is understood that as the metal dust content in the water in the circulating water tank 13 increases, its dust removal effect will decrease. Therefore, at this time, by opening the drain outlet 131, a portion of the water in the circulating water tank 13 can be released to release the metal dust, and then clean water can be added back into the circulating water tank 13, thereby reducing the metal dust content in the water in the circulating water tank 13 to a suitable range, thus ensuring the dust removal effect.
[0048] In some embodiments, when the metal content in the water in the circulating water tank 13 exceeds a first threshold, the dust removal device 1 will alarm, and an operator can open the drain outlet 131.
[0049] To facilitate the replenishment of water into the circulating water tank 13, the dust removal device 1 also includes a water replenishment component 15, which is connected to the circulating water tank 13 and is configured to replenish water into the circulating water tank 13.
[0050] It is worth noting that, since the spray tower 11 needs to perform dust removal work for a long time, in order to reduce the workload of the operators, the water replenishment component 15 includes a water replenishment pipe 151, a level gauge 153, and a solenoid valve 152. The water replenishment pipe 151 is connected to the circulating water tank 13. The solenoid valve 152 is installed on the water replenishment pipe 151 to control the opening and closing of the water replenishment pipe 151. The level gauge 153 is installed in the circulating water tank 13 and is connected to the solenoid valve 152. When the water level in the circulating water tank 13 is lower than the second threshold, the solenoid valve 152 opens. When the water level in the circulating water tank 13 is higher than the third threshold, the solenoid valve 152 closes.
[0051] When drain outlet 131 is opened, the water level in circulating water tank 13 will drop. When the water level in circulating water tank 13 falls below the second threshold, it indicates that the water volume in circulating water tank 13 is low. At this time, solenoid valve 152 opens, and water supply pipe 151 replenishes clean water into circulating water tank 13. It is worth noting that drain outlet 131 needs to be closed at this time. This operation can be performed manually by the operator or controlled by solenoid valve 152. When the water volume in circulating water tank 13 is higher than the third threshold, the water volume in circulating water tank 13 is sufficient, and the content of metal dust has been diluted. At this time, solenoid valve 152 can be closed to stop water replenishment.
[0052] like Figure 1 As shown, the level gauge 153 includes a connecting rod 1531 and a float 1532. One end of the connecting rod 1531 is pivotally connected to the circulating water tank 13 so that it can swing in a vertical plane. The float 1532 is connected to the free end of the connecting rod 1531. When the water level in the circulating water tank 13 rises, the float 1532 drives the connecting rod 1531 to rotate upward. When the water level in the circulating water tank 13 falls, the float 1532 drives the connecting rod 1531 to rotate downward. When the connecting rod 1531 rotates downward and triggers the first sensor, the water level is at the second threshold. When the connecting rod 1531 rotates upward and triggers the second sensor, the water level is at the third threshold.
[0053] In some embodiments, the level gauge 153 includes two level sensors, which are vertically spaced within the circulating water tank 13. When the water level in the circulating water tank 13 drops below the lower level sensor, the water level is a second threshold. When the water level in the circulating water tank 13 rises above the upper level sensor, the water level is a third threshold.
[0054] To further improve the dust removal effect of the dust removal device 1, the dust removal device 1 also includes an air inlet pipe 16. The air inlet pipe 16 passes through the air inlet 111 and is sealed to the spray tower 11. The portion of the air inlet pipe 16 inside the spray tower 11 slopes downward. This structure ensures that the exhaust gas flows downward when entering the spray tower 11, which greatly reduces the upward flow speed of the exhaust gas, prolongs the residence time of the exhaust gas in the spray tower 11, increases the contact and mixing time between water mist and dust, and improves the dust removal effect.
[0055] Furthermore, the spray dust removal assembly 12 includes a flow equalization layer 122 and a plurality of spray heads 121. The flow equalization layer 122 is located below the plurality of spray heads 121 and has a loose and porous structure. Each of the spray heads 121 can spray water mist; the more spray heads 121 there are, the larger the coverage area of the water mist and the better the dust removal effect. The loose and porous flow equalization layer 122 ensures that the exhaust gas is evenly distributed during its ascent, preventing short circuits or flow deviations within the spray tower 11 and ensuring sufficient contact between the gas and the water mist.
[0056] In this embodiment, a support plate 113 is provided inside the spray tower 11, and a flow equalization layer 122 is disposed on the support plate 113. The support plate 113 has ventilation holes 1131, which correspond one-to-one with the spray heads 121 in the vertical direction. It can be understood that, in the horizontal direction, the closer to the spray head 121, the better the dust removal effect of the water mist. After the exhaust gas enters the flow equalization layer 122 through the ventilation holes 1131, the closer to the ventilation holes 1131, the higher the exhaust gas content. The one-to-one correspondence between the ventilation holes 1131 and the spray heads 121 ensures that the area with the best dust removal effect can cover the area with the highest exhaust gas content, while the outer area with lower exhaust gas content is covered by the area with a moderate dust removal effect of the water mist, thereby ensuring the overall dust removal effect.
[0057] In this embodiment, multiple spray dust removal components 12 are installed in the spray tower 11 along the vertical direction, and all of the multiple spray dust removal components 12 are connected to the water supply pipe 182. The multiple spray components can form multi-stage dust removal, thereby further improving the dust removal effect of the dust removal device 1 and ensuring that the exhaust gas discharged from the exhaust port 112 meets the standards.
[0058] like Figure 1 As shown, an exhaust fan 17 is installed at the top of the spray tower 11. After the exhaust fan 17 is started, it can create a negative pressure inside the spray tower 11, ensuring smooth airflow inside the spray tower 11 and preventing exhaust gas from accumulating and affecting the dust removal efficiency and effect of the dust removal system.
[0059] It is worth noting that the circulating water tank 13 can be connected to the bottom of the spray tower 11 via a water pipe, or it can be installed at the bottom of the spray tower 11, so that the spray water can directly enter the circulating water tank 13 through the water leakage hole at the bottom of the spray tower 11.
[0060] In this embodiment, the circulating water tank 13 of the dust removal device 1 is located at the bottom of the spray tower 11.
[0061] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of this utility model. The content of this specification should not be construed as a limitation of this utility model.
Claims
1. A dust removal device, characterized in that, include: A spray tower (11) is provided with a spray dust removal assembly (12). The spray tower (11) is provided with an air inlet (111) and an exhaust outlet (112). The air inlet (111) is located below the spray dust removal assembly (12), and the exhaust outlet (112) is located above the spray dust removal assembly (12). A circulating water tank (13) is connected to the bottom of the spray tower (11). A stirring assembly (14) is provided inside the circulating water tank (13). The stirring assembly (14) is configured to make the water in the circulating water tank (13) flow vertically. The circulation assembly (18) includes a circulation pump (181) and a water supply pipe (182). The circulation pump (181) is connected to the interior of the circulating water tank (13). One end of the water supply pipe (182) is connected to the spray dust removal assembly (12), and the other end of the water supply pipe (182) is connected to the circulation pump (181).
2. The dust removal device according to claim 1, characterized in that, The circulating water tank (13) includes a drain outlet (131). A metal content sensor is installed inside the circulating water tank (13). When the metal content in the water in the circulating water tank (13) exceeds a first threshold, the drain outlet (131) opens or the dust removal device alarms.
3. The dust removal device according to claim 1, characterized in that, The dust removal device also includes a water replenishment component (15), which is connected to the circulating water tank (13) and is configured to replenish water into the circulating water tank (13).
4. The dust removal device according to claim 3, characterized in that, The water replenishment component (15) includes a water replenishment pipe (151), a level gauge (153), and a solenoid valve (152). The water replenishment pipe (151) is connected to the circulating water tank (13). The solenoid valve (152) is installed on the water replenishment pipe (151) to control the opening and closing of the water replenishment pipe (151). The level gauge (153) is installed in the circulating water tank (13) and is communicatively connected to the solenoid valve (152). When the water level in the circulating water tank (13) is lower than the second threshold, the solenoid valve (152) opens. When the water level in the circulating water tank (13) is higher than the third threshold, the solenoid valve (152) closes.
5. The dust removal device according to claim 1, characterized in that, The dust removal device also includes an air inlet pipe (16), which passes through the air inlet (111) into the spray tower (11) and is sealed to the air inlet (111). The portion of the air inlet pipe (16) located inside the spray tower (11) is inclined downward.
6. The dust removal device according to claim 1, characterized in that, The spray dust removal assembly (12) includes a flow equalization layer (122) and a plurality of spray heads (121). The flow equalization layer (122) is located below the plurality of spray heads (121) and has a loose porous structure.
7. The dust removal device according to claim 6, characterized in that, The spray tower (11) is provided with a support plate (113), and the flow equalization layer (122) is provided on the support plate (113). The support plate (113) has ventilation holes (1131), and the ventilation holes (1131) correspond one-to-one with the spray heads (121) in the vertical direction.
8. The dust removal device according to claim 1, characterized in that, Along the vertical direction, the spray tower (11) is provided with a plurality of spray dust removal components (12), and the plurality of spray dust removal components (12) are all connected to the water supply pipe.
9. The dust removal device according to claim 1, characterized in that, An exhaust fan (17) is installed on the top of the spray tower (11).
10. A dust removal system, characterized in that, The dust removal device according to any one of claims 1 to 9 further includes a primary dust removal component (2), the air inlet (111) is connected to the primary dust removal component, the primary dust removal component includes a plurality of dust collectors (21) arranged at intervals, and the pore size of the filter holes of the plurality of dust collectors (21) decreases sequentially along the gas flow direction.