Exhaust device of lithium battery clean room

Abstract

The utility model discloses an exhaust device of a lithium battery clean room, which comprises an exhaust pipe arranged at the top of the clean room, a porous structure is arranged on the side wall of the exhaust pipe, and an annular baffle covers the periphery of the porous structure; the traction mechanism is used for driving the annular baffle to slide up and down along the wall of the exhaust pipe in a limited manner; and the air volume sensing mechanism is arranged in the exhaust pipe. According to the utility model, the porous structure arranged on the exhaust pipe is used as an exhaust channel when a fault occurs, the porous structure is opened according to the operation condition of equipment in the exhaust pipe in combination with the traction mechanism, and a fault emergency treatment scheme is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to an exhaust device for a lithium battery clean room. Background Art

[0002] A lithium battery clean room refers to a high-cleanliness working environment designed specifically for lithium battery production. Its main purpose is to remove pollutants such as microparticles, harmful air, bacteria, etc. from the air in the lithium battery production environment, and to control parameters such as indoor temperature, humidity, cleanliness, indoor pressure, air flow velocity and distribution, and static electricity within a certain range to ensure the quality and production safety of lithium battery products.

[0003] During the lithium battery production process, cleanrooms require continuous ventilation to prevent the accumulation of dust, metal particles, and moisture. Existing cleanroom exhaust systems cannot handle emergency situations when a fan fails, or they rely on backup fans, which often results in a waste of backup resources or a dangerous cleanroom condition due to reduced exhaust volume. Utility Model Content

[0004] The purpose of the utility model is to provide an exhaust device for a lithium battery clean room. By opening a porous structure on the exhaust pipe as an exhaust channel in the event of a fault, and combining a traction mechanism to open the porous structure according to the operating conditions of the equipment in the exhaust pipe, an emergency treatment solution for the fault is provided.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The utility model discloses an exhaust device for a lithium battery clean room, comprising an exhaust duct arranged at the top of the clean room, wherein the side wall of the exhaust duct is provided with a porous structure, and the outer peripheral cover of the porous structure is provided with an annular baffle; further comprising a traction mechanism for driving the annular baffle to slide up and down along the exhaust duct wall in a limited manner; and further comprising an air volume sensor mechanism arranged in the exhaust duct.

[0007] A further solution: the traction mechanism includes a bracket, a magnetic metal block connected to the bracket for sliding up and down, a connecting rope connecting the magnetic metal block and the annular baffle, a de-energized electromagnet fixed on the bracket and abutting against the magnetic metal block; and a controller electrically connected to the air volume sensing mechanism and the de-energized electromagnet for controlling the lifting and lowering of the magnetic metal block.

[0008] A further solution: the bracket has parallel guide rails, the magnetic metal block includes a metal block body and a slider arranged on one side of the metal block body, and the slider is slidably connected to the guide rails.

[0009] A further solution is that the bracket is a door-shaped frame, and the power-off type electromagnet is fixed in the door-shaped frame.

[0010] A further solution is that the length of the power-off type electromagnet is set to be greater than the length of the magnetic metal block.

[0011] A further solution includes a fan disposed at the air outlet end of the exhaust duct.

[0012] A further solution includes a filter provided at the connection between the exhaust duct and the clean room.

[0013] A further solution: the filter is an adsorption type gas filter.

[0014] A further solution: the air volume sensing mechanism includes a first air volume sensor arranged above the porous structure and a second air volume sensor arranged below the porous structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model provides a porous structure on the exhaust pipe, and an annular baffle is provided on the outer periphery of the porous structure. When the exhaust is normal, the annular baffle blocks the porous structure to prevent air leakage; when the exhaust is abnormal, the annular baffle is driven to slide upward by a traction mechanism to expose the porous structure, thereby playing a role in assisting exhaust and ensuring the safe operation of the clean room. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a side sectional view of the exhaust pipe of the utility model;

[0019] In the figure: 1-clean room, 2-exhaust duct, 21-porous structure, 3-annular baffle, 4-traction mechanism, 41-bracket, 42-magnetic metal block, 421-metal block body, 422-slider, 43-connecting rope, 44-controller, 45-de-energized electromagnet, 5-fan, 6-filter, 7-first air volume sensor, 8-second air volume sensor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0022] See also Figure 1-2 In this embodiment, an exhaust device for a lithium battery cleanroom includes an exhaust duct 2 disposed at the top of a cleanroom 1. The sidewall of the exhaust duct 2 is provided with a porous structure 21, and the outer periphery of the porous structure 21 is covered by an annular baffle 3. The device also includes a traction mechanism 4 that drives the annular baffle 3 to slide up and down in a restricted manner along the wall of the exhaust duct 2. The device also includes an air volume sensor disposed within the exhaust duct 2. When the air volume sensor detects normal exhaust, the annular baffle 3 covers the outer periphery of the porous structure 21, and the traction mechanism 4 does not operate. When the air volume sensor detects abnormal exhaust, the traction mechanism 4 drives the annular baffle 3 to slide, exposing the porous structure 21 and allowing exhaust to proceed. This maintains the exhaust volume of the cleanroom 1 substantially constant, ensuring safe operation of the cleanroom 1.

[0023] Furthermore, the traction mechanism 4 includes a bracket 41, a magnetic metal block 42 that is slidably connected to the bracket 41, a connecting rope 43 connecting the magnetic metal block 42 and the annular baffle 3, a de-energized electromagnet 45 fixed to the bracket 41 and abutting against the magnetic metal block 42; and a controller 44 electrically connected to the air volume sensor mechanism and the de-energized electromagnet for controlling the raising and lowering of the magnetic metal block 42. The air volume sensor mechanism monitors the exhaust air velocity within the pipe in real time and feeds this data back to the controller 44. When the flow rate is abnormal, the controller 44 energizes and de-energizes the de-energized electromagnet 45, causing the magnetic metal block 42 to descend under the action of gravity, thereby driving the annular baffle 3 upward, fully exposing the porous structure 21 and facilitating exhaust.

[0024] Furthermore, the bracket 41 has parallel guide rails, and the magnetic metal block 42 includes a metal block body 421 and a slider 422 provided on one side of the metal block body 421. The bottom end of the bracket 41 is fixed to the top of the clean room 1, and the slider 422 is slidably connected to the guide rails. The connecting rope 43 spans the crossbeam of the bracket 41.

[0025] Furthermore, the bracket 41 is a door-shaped frame, the power-off type electromagnet 45 is fixed in the door-shaped frame, and the connecting rope 43 spans across the crossbeam of the door-shaped frame.

[0026] Furthermore, the length of the power-off type electromagnet 45 is set to be greater than the length of the magnetic metal block 42 to ensure that the power-off type electromagnet and the magnetic metal block 42 have as large a contact surface as possible, and the magnetic attraction is more firm.

[0027] Furthermore, the present invention further comprises a fan 5 provided at the air outlet end of the exhaust pipe 2, which generates a suction effect, continuously works on the gas in the exhaust pipe 2, generates airflow, and continuously exhausts air.

[0028] Furthermore, the system further comprises a filter 6 provided at the connection between the exhaust pipe 2 and the clean room 1. The filter 6 is an adsorption type gas filter that filters the polluted air in the exhaust pipe into a clean air flow that can be discharged.

[0029] Furthermore, the air volume sensing mechanism includes a first air volume sensor 7 disposed above the porous structure 21 and a second air volume sensor 8 disposed below the porous structure 21. The air flow state in the exhaust duct 2 can be determined by the value changes and difference between the two air volume sensors.

[0030] When the fan 5 is operating normally, the flow rates measured by the first air volume sensor 7 and the second air volume sensor 8 are approximately the same, and the difference between the two flow rates is within a preset range, and the controller does not operate; when the fan 5 fails, the first air volume sensor 7 detects a decrease in the air flow in the pipeline, or the difference between the first air volume sensor 7 and the second air volume sensor 8 exceeds a preset range, and the controller reminds the user to troubleshoot the fault through an indicator light or an alarm bell. At the same time, the controller energizes and demagnetizes the de-energized electromagnet, and the magnetic metal block 42 slides down along the guide rail, the annular baffle 3 moves up, and the porous structure 21 is completely exposed, allowing most of the air flow to escape through the porous structure 21.

[0031] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0032] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent modifications made according to the scope of the claims of the present application are within the scope of protection of the claims of the present application.

Claims

1. An exhaust device for a lithium battery clean room, characterized in that: The invention comprises an exhaust pipe (2) arranged at the top of a clean room (1), wherein the side wall of the exhaust pipe (2) is provided with a porous structure (21), and the outer peripheral cover of the porous structure (21) is provided with an annular baffle (3); further comprising a traction mechanism (4) for driving the annular baffle (3) to slide up and down along the wall of the exhaust pipe (2) in a limited manner; and further comprising an air volume sensor mechanism arranged in the exhaust pipe (2); The traction mechanism (4) comprises a bracket (41), a magnetic metal block (42) connected to the bracket (41) for sliding up and down, a connecting rope (43) connecting the magnetic metal block (42) and the annular baffle (3), a de-energized electromagnet (45) fixed to the bracket (41) and abutting against the magnetic metal block (42); and a controller (44) electrically connected to the air volume sensor mechanism and the de-energized electromagnet for controlling the lifting and lowering of the magnetic metal block (42). The air volume sensing mechanism comprises a first air volume sensor (7) arranged above the porous structure (21) and a second air volume sensor (8) arranged below the porous structure (21).

2. The exhaust device for the lithium battery clean room according to claim 1, characterized in that: The bracket (41) has parallel guide rails, and the magnetic metal block (42) includes a metal block body (421) and a slider (422) provided on one side of the metal block body (421), wherein the slider (422) is slidably connected to the guide rails.

3. The exhaust device for the lithium battery clean room according to claim 1, characterized in that: The bracket (41) is a door-shaped frame, and the power-off type electromagnet (45) is fixed in the door-shaped frame.

4. The exhaust device for a lithium battery clean room according to claim 1, characterized in that: The length of the power-off type electromagnet (45) is greater than the length of the magnetic metal block (42).

5. The exhaust device for the lithium battery clean room according to claim 1, characterized in that: It also includes a fan (5) arranged at the air outlet end of the exhaust pipe (2).

6. The exhaust device for a lithium battery clean room according to claim 1, characterized in that: It also includes a filter (6) provided at the connection between the exhaust pipe (2) and the clean room (1).

7. The exhaust device for the lithium battery clean room according to claim 6, characterized in that: The filter (6) is an adsorption type gas filter.

Images