A negative pressure dust removal system for a lithium battery separator production line

Abstract

This utility model discloses a negative pressure dust removal system for a lithium battery separator production line, relating to the field of building construction technology. It solves the problem in existing technologies where dust collection volumes release dust into the air during collection, polluting the environment. The embodiment of this utility model discloses a negative pressure dust removal system for a lithium battery separator production line, including an extruder and a negative pressure dust removal device located on the dust-laden airflow discharge channel of the extruder. The negative pressure dust removal device includes a dust collection box with an internal dust removal cavity, and an exhaust fan unit for maintaining the dust removal cavity in a slightly negative pressure state. The exhaust end of the exhaust fan unit is connected to the dust removal cavity. A filter assembly is also provided between the exhaust end of the exhaust fan unit and the dust removal cavity. It also includes hooks located inside the dust collection box for hanging dust collection bags, and a dust inlet pipe for communicating with the exhaust port of the extruder and feeding dust into the dust removal cavity. The outlet of the dust inlet pipe, the hooks, and the filter assembly are distributed sequentially along the airflow direction.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, specifically to a negative pressure dust removal system for a lithium battery separator production line. Background Technology

[0002] In lithium-ion battery separator production, the feeding equipment needs to vent during the feeding process, and the extruder needs to vent during the unloading process. A large amount of dust is generated during these venting processes. The conventional solution is to install a flexible hose and a dust collection container. Currently, the main solution is to use a corrugated pipe and a covered plastic bucket. Figure 1 As shown, one end of the corrugated pipe is connected to the exhaust port of the extruder or feeding equipment, and the other end is directly connected to the plastic bucket lid. Since the dust-laden airflow will continuously flow towards the dust collection container, gaps or exhaust holes must be reserved on the plastic bucket or lid. It cannot be completely sealed. Otherwise, the dust-laden airflow with a certain positive pressure will not be able to flow towards the dust collection container. The plastic bucket that cannot be completely sealed will inevitably cause some dust to escape into the air from the gaps or exhaust holes during the collection process, resulting in environmental pollution.

[0003] Based on the above background, the inventors designed a negative pressure dust removal system for a lithium battery separator production line to solve at least one of the above problems, and thus, this application is filed. Summary of the Invention

[0004] The purpose of this application is to provide a negative pressure dust removal system for a lithium battery separator production line, which solves the problem in the prior art where dust is released into the air and pollutes the environment when the dust collection volume is used to collect dust.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0006] This application provides a negative pressure dust removal system for a lithium battery separator production line, including an extruder and a negative pressure dust removal device installed on the dust-laden airflow discharge channel of the extruder:

[0007] The negative pressure dust removal device includes a dust removal box with a dust removal cavity inside, and an exhaust fan unit for maintaining the dust removal cavity in a slightly negative pressure state. The exhaust end of the exhaust fan unit is connected to the dust removal cavity.

[0008] A filter assembly is also installed between the exhaust end of the exhaust fan unit and the dust removal cavity;

[0009] It also includes hooks located inside the dust collection box for hanging dust collection bags, a dust inlet pipe for feeding dust into the dust collection cavity, an outlet of the dust inlet pipe, and hooks and filter components distributed sequentially along the airflow direction.

[0010] Optionally, the top of the dust collection box is provided with a transparent flip cover, and several hooks are distributed around the perimeter of the transparent flip cover.

[0011] Optionally, the exhaust fan unit includes multiple exhaust fans arranged side by side;

[0012] It also includes several vertical dust inlet pipes located at the top of the dust collection box, with the dust inlet pipes and exhaust fan unit located on either side of the transparent flip cover and hook, respectively.

[0013] Optionally, the dust inlet pipe is provided with multiple pipes, and the multiple pipes are distributed at intervals along the direction of the exhaust fan of the exhaust fan unit.

[0014] Optionally, it also includes a fan control cabinet fixed on the dust collection box, and multiple exhaust fans of the exhaust fan unit are fixed on the fan control cabinet, with the signal input terminal of the exhaust fan communicating with the signal output terminal of the control cabinet;

[0015] The fan control cabinet is equipped with multiple control buttons for controlling the start, stop, and switching of multiple exhaust fans.

[0016] Optionally, the dust collection box is also equipped with a negative pressure gauge to monitor the air pressure status of the dust collection cavity.

[0017] Optionally, the dust collection box is also provided with a positive pressure air supply port for supplying air into the dust collection cavity.

[0018] Optionally, the filtration assembly includes a pre-filter and a medium-efficiency filter arranged adjacent to each other, and the dust removal cavity of the dust collector is connected to the air inlet of the exhaust fan unit through the pre-filter and the medium-efficiency filter in sequence.

[0019] Optionally, the bottom of the dust collection box is provided with a waste cleaning port for cleaning dust from the bottom of the dust collection cavity.

[0020] Optionally, the dust collection box is equipped with wheels at the bottom and a trolley handle on the side.

[0021] Beneficial effects of the utility model:

[0022] This application, by setting up a dust collection box with an internal dust collection cavity and an exhaust fan unit, ensures that the dust collection cavity within the dust collection box is always maintained at a slightly negative pressure. Simultaneously, a filter assembly is installed between the exhaust end of the exhaust fan unit and the dust collection cavity, preventing dust entering the dust collection cavity through the dust inlet pipe from being extracted by the exhaust fan unit and instead retaining it within the dust collection cavity. Furthermore, hooks are installed inside the dust collection box, causing the dust remaining in the dust collection cavity to settle into the dust collection bag. Therefore, by designing the above components, this application ensures that dust discharged from the extruder is only collected within the dust collection cavity and does not escape into the air to pollute the environment, effectively solving the problems of the prior art.

[0023] Furthermore, the spatial layout of the dust inlet pipe, hook, filter assembly, and exhaust fan unit arranged sequentially in this application ensures stable airflow within the dust removal cavity, minimizing airflow turbulence and eddies, and also facilitates dust falling into the dust collection bag on the hook. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the prior art of this application.

[0025] Figure 2 This is a three-dimensional structural diagram of an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1-Dust collector, 11-Dust collection cavity, 12-Dust inlet pipe, 13-Positive pressure air supply port, 14-Negative pressure gauge, 15-Waste cleaning port, 16-Trolley handle, 17-Walking wheel, 2-Transparent flip cover, 21-Hook, 3-Fan control cabinet, 31-Control button, 4-Exhaust fan unit, 51-Primary filter, 52-Medium efficiency filter, 6-Extruder, 7-Corrugated pipe, 8-Plastic bucket, 81-Bucket lid. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0029] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They 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. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] like Figure 2 As shown, this embodiment provides a negative pressure dust removal system for a lithium battery separator production line, including an extruder 6 and a negative pressure dust removal device installed on the dust-laden airflow discharge channel of the extruder:

[0033] The negative pressure dust removal device includes a dust removal box 1 with a dust removal cavity 11 inside, and an exhaust fan unit 4 for maintaining the dust removal cavity 11 in a slightly negative pressure state. The exhaust end of the exhaust fan unit 4 is connected to the dust removal cavity 11.

[0034] A filter assembly is also provided between the exhaust end of the exhaust unit 4 and the dust removal cavity 11;

[0035] It also includes a hook 21 located inside the dust collection box 1 for hanging dust collection bags, a dust inlet pipe 12 for feeding dust into the dust collection cavity 11, a discharge port of the dust inlet pipe 12, and the hook 21 and filter assembly are distributed sequentially along the airflow direction.

[0036] like Figure 1 As shown, in the prior art, the exhaust port of the extruder 6 is connected to the lid 81 of the plastic bucket 8 through a corrugated pipe 7. Since the dust-laden airflow inside the corrugated pipe 7 has a certain positive pressure, there is no sealing element between the existing lid 81 and the corrugated pipe 7. This causes some dust to escape into the outside air through the gap between the lid 81 and the corrugated pipe 7 after the dust-laden airflow enters the plastic bucket 8.

[0037] This embodiment, by setting up a dust collection box 1 with an internal dust collection cavity 11 and an exhaust fan unit 4, ensures that the dust collection cavity 11 inside the dust collection box 1 can always maintain a slightly negative pressure state. At the same time, a filter component is also provided between the exhaust end of the exhaust fan unit 4 and the dust collection cavity 11, so that dust entering the dust collection cavity 11 through the dust inlet pipe 12 will not be drawn out by the exhaust fan unit 4, but will remain in the dust collection cavity 11. This embodiment also sets up a hook 21 inside the dust collection box 1, so that the dust remaining in the dust collection cavity 11 will settle into the dust collection bag. Therefore, by designing the above-mentioned components, this application ensures that dust discharged from the extruder can only be collected in the dust collection cavity 11 and will not escape into the air to pollute the environment, which can effectively solve the problems of the prior art.

[0038] Furthermore, the spatial layout of the dust inlet pipe 12, hook 21, filter assembly, and exhaust fan unit 4 arranged sequentially in this embodiment ensures stable airflow within the dust removal cavity 11, minimizing airflow turbulence and vortices, and also facilitates dust falling into the dust collection bag on the hook 21.

[0039] In this embodiment, the air inlet of the exhaust fan unit 4 is positioned directly opposite the outlet of the filter assembly and the dust inlet pipe 12.

[0040] In this embodiment, the top of the dust collection box 1 is provided with a transparent flip cover 2, and several hooks 21 are distributed around the transparent flip cover 2. By setting the transparent flip cover 2 and the hooks 21 are distributed next to the transparent flip cover 2, it is convenient to observe the dust collection status of the dust collection bag on the hooks 21, and at the same time, it is convenient to remove and replace the dust collection bag.

[0041] In this embodiment, the transparent flip cover 2 can be made of plexiglass and can be connected to the top of the dust collection box 1 via hinges.

[0042] In this embodiment, the exhaust fan unit 4 includes a plurality of exhaust fans arranged side by side;

[0043] It also includes several vertical dust inlet pipes 12 located at the top of the dust collection box 1. The dust inlet pipes 12 and the exhaust fan unit 4 are located on both sides of the transparent flip cover 2 and the hook 21, respectively.

[0044] In this embodiment, four exhaust fans are provided. The four exhaust fans can be started in pairs as needed, for example, two of them can be started for 2 hours and then shut down, and after shutting down, the other two can be started. Alternatively, they can be started one by one as a group, with each exhaust fan starting for 2 hours and then shutting down, until each exhaust fan has started and shut down once, which is a complete cycle. This avoids the exhaust fans from being in a long-term running state, which would cause the fans to overheat and have a reduced lifespan.

[0045] In this embodiment, multiple dust inlet pipes 12 are provided, and these multiple pipes are arranged side-by-side with intervals along the exhaust fan of the exhaust fan unit 4. In this embodiment, the dust inlet pipes 12 have two diameter models, including φ50mm and φ32mm, to facilitate simultaneous connection with the exhaust ports of the extruder 6 and the feeding device (not shown in the figure). In this embodiment, the extruder 6 and the feeding device 6 typically have two exhaust ports. Therefore, based on the dust inlet pipes 12, the unit 4 can simultaneously collect dust from the dust-laden airflow discharged from the extruder 6 and the feeding device. In this embodiment, when the dust inlet pipes 12 are not connected to the exhaust port of the feeding device, the corresponding model of dust inlet pipe can be directly sealed.

[0046] In this embodiment, a fan control cabinet 3 is also included, which is fixed on the dust collection box 1. Multiple exhaust fans of the exhaust fan unit 4 are fixed on the fan control cabinet 3, and the signal input terminal of the exhaust fan is communicatively connected to the signal output terminal of the control cabinet.

[0047] The fan control cabinet 3 is equipped with multiple control buttons 31 for controlling the start, stop, and switching of multiple exhaust fans. In this embodiment, the control cabinet is equipped with a microcontroller and a time relay to control the exhaust fans. The microcontroller and time relay are used to control the start, stop, and switching of the exhaust fans, which is a conventional technology and will not be described in detail here.

[0048] In this embodiment, the dust removal box 1 is also equipped with a negative pressure gauge 14 to monitor the air pressure status of the dust removal cavity 11, so as to facilitate the observation of the negative pressure value in the dust removal cavity 11. When the exhaust fan reaches the set speed frequency, if the negative pressure value of the negative pressure gauge 14 still cannot reach the set value, the pre-filter 51 in the filter assembly can be cleaned. In this embodiment, the negative pressure value is maintained at around -5pa.

[0049] In this embodiment, the dust collection box 1 is also provided with a positive pressure air supply port 13 for supplying air to the dust collection cavity 11.

[0050] The negative pressure value can be adjusted by setting the positive pressure air supply port 13.

[0051] In this embodiment, the filtration assembly includes a pre-filter 51 and a medium-efficiency filter 52 arranged adjacent to each other. The dust removal cavity 11 of the dust removal box 1 is connected to the air inlet of the exhaust fan unit 4 through the pre-filter 51 and the medium-efficiency filter 52 in sequence. By setting two layers of filters, dust is prevented from being discharged from the exhaust fan. The pre-filter 51 and the medium-efficiency filter 52 in this embodiment are existing conventional filtration components, which will not be described in detail here.

[0052] In this embodiment, the bottom of the dust collection box 1 is provided with a waste cleaning port 15 for cleaning the dust at the bottom of the dust collection cavity 11. By setting the waste cleaning port 15, the dust that falls into the dust collection bag can be cleaned.

[0053] In this embodiment, the dust collection box 1 is provided with a walking wheel 17 at the bottom and a trolley handle 16 on the side of the dust collection box 1 to facilitate the relocation of the dust collection box 1.

[0054] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A negative pressure dust removal system for a lithium battery separator production line, characterized in that, Includes an extruder (6) and a negative pressure dust removal device installed on the dust-laden airflow discharge channel of the extruder: The negative pressure dust removal device includes a dust removal box (1) with a dust removal cavity (11) inside, and an exhaust fan unit (4) for maintaining the dust removal cavity (11) in a slightly negative pressure state. The exhaust end of the exhaust fan unit (4) is connected to the dust removal cavity (11). A filter assembly is also provided between the exhaust end of the exhaust unit (4) and the dust removal cavity (11); It also includes a hook (21) located in the dust collection box (1) for hanging dust collection bags, a dust inlet pipe (12) for communicating with the exhaust port of the extruder (6) and feeding dust into the dust collection cavity (11), the discharge port of the dust inlet pipe (12), and the hook (21) and filter assembly distributed in sequence along the airflow direction.

2. The negative pressure dust removal system for a lithium battery separator production line according to claim 1, characterized in that, The dust collection box (1) has a transparent flip cover (2) on top, and several hooks (21) are distributed around the transparent flip cover (2).

3. The negative pressure dust removal system for a lithium battery separator production line according to claim 2, characterized in that, The exhaust fan unit (4) includes multiple exhaust fans arranged side by side; It also includes several vertical dust inlet pipes (12) located at the top of the dust collection box (1), with the dust inlet pipes (12) and the exhaust fan unit (4) located on both sides of the transparent flip cover (2) and the hook (21), respectively.

4. The negative pressure dust removal system for a lithium battery separator production line according to claim 3, characterized in that, The dust inlet pipe (12) is provided with multiple pipes, and the multiple pipes are arranged side by side along the exhaust fan of the exhaust fan unit (4) at intervals.

5. The negative pressure dust removal system for a lithium battery separator production line according to claim 3, characterized in that, It also includes a fan control cabinet (3) fixed on the dust collection box (1), and multiple exhaust fans of the exhaust fan unit (4) are fixed on the fan control cabinet (3). The signal input terminal of the exhaust fan is communicatively connected to the signal output terminal of the control cabinet. The fan control cabinet (3) is equipped with multiple control buttons (31) for controlling the start, stop and switch of multiple exhaust fans.

6. The negative pressure dust removal system for a lithium battery separator production line according to claim 1, characterized in that, The dust collector (1) is also equipped with a negative pressure gauge (14) to monitor the air pressure status of the dust collector cavity (11).

7. The negative pressure dust removal system for a lithium battery separator production line according to claim 1, characterized in that, The dust collection box (1) is also provided with a positive pressure air supply port (13) for supplying air to the dust collection cavity (11).

8. The negative pressure dust removal system for a lithium battery separator production line according to claim 1, characterized in that, The filter assembly includes a primary filter (51) and a secondary filter (52) arranged adjacent to each other. The dust removal cavity (11) of the dust removal box (1) is connected to the air inlet of the exhaust fan unit (4) through the primary filter (51) and the secondary filter (52) in sequence.

9. The negative pressure dust removal system for a lithium battery separator production line according to claim 1, characterized in that, The bottom of the dust collector (1) is provided with a waste cleaning port (15) for cleaning the dust at the bottom of the dust collection cavity (11).

10. The negative pressure dust removal system for a lithium battery separator production line according to claim 1, characterized in that, The dust collection box (1) is equipped with wheels (17) at the bottom and a trolley handle (16) on the side.

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