Stirring device and defoaming equipment

Abstract

The utility model belongs to the technical field of lithium battery slurry production equipment, and discloses a stirring device and defoaming equipment, the stirring device comprises a connecting plate, a mounting plate and at least two blades, the at least two blades are arranged between the connecting plate and the mounting plate at intervals, and two ends of each blade are respectively connected with the connecting plate and the mounting plate. The connecting plate, the mounting plate and the blades can stir the organic coating, the organic coating can flow in multiple directions, the fusion probability of tiny bubbles is increased, bubbles large in size are formed, the buoyancy of the bubbles is increased along with increase of the size, and then the bubbles float to the surface of the organic coating and break to exhaust gas. The organic coating is fully stirred, so that the defoaming efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery slurry production equipment, in particular to a stirring device and a defoaming device. Background Art

[0002] The diaphragm is an important component of power batteries and energy storage batteries. In order to further improve the interfacial adhesion between the diaphragm and the electrode and slow down the decay rate of the battery cell's cycle capacity, an organic coating is usually applied to the surface of the diaphragm. During the preparation process of the organic coating, bubbles will be generated. The bubbles cannot rise and burst by their own buoyancy in a short period of time, resulting in a large number of bubbles suspended inside the organic coating. Directly applying such organic coating to the diaphragm can easily lead to poor coating, such as insufficient coating load, uneven coating, defects on the membrane surface, and other problems. However, existing stirring blades only have a single stirring and shearing effect, with low stirring efficiency and insufficient stirring. It is difficult to eliminate tiny bubbles, and the defoaming efficiency is low. Utility Model Content

[0003] The purpose of the utility model is to provide a stirring device and a defoaming device to improve the stirring effect of blades on organic coatings.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] The stirring device comprises a connecting plate, a mounting plate and at least two blades, wherein the at least two blades are spaced apart between the connecting plate and the mounting plate, and two ends of the blades are respectively connected to the connecting plate and the mounting plate.

[0006] As an optional technical solution, the interior of the stirring device is a feed space, the connecting plate, the mounting plate and at least two of the blades surround the circumference of the feed space, and at least one of the connecting plate and the mounting plate is provided with a feed port, which is connected to the feed space.

[0007] As an optional technical solution, the connecting plate and the mounting plate are spaced apart in the vertical direction, the mounting plate is located at the bottom of the connecting plate, and the feed port is opened on the mounting plate.

[0008] As an optional technical solution, the blade has a first end connected to the connecting plate and a second end connected to the mounting plate, and a projection of the first end on the connecting plate forms an angle with a projection of the second end on the connecting plate.

[0009] As an optional technical solution, the side of the blade facing the connecting plate is provided with at least one rotating curved surface or a wavy curved surface; and / or the side of the blade facing away from the connecting plate is provided with at least one rotating curved surface or a wavy curved surface.

[0010] As an optional technical solution, the width of the blade changes gradually along the direction from the mounting plate to the connecting plate.

[0011] As an optional technical solution, the lengths of the first ends of two adjacent blades on the connecting plate are not equal; and / or the lengths of the second ends of two adjacent blades on the mounting plate are not equal.

[0012] The defoaming equipment includes a vacuum system, a tank barrel, a power piece and the stirring device as described above, wherein the vacuum system is used to vacuum the tank barrel, the stirring device is arranged inside the tank barrel, the output end of the power piece is transmission-connected to the connecting plate of the stirring device, and the power piece is used to drive the stirring device to rotate.

[0013] As an optional technical solution, the defoaming equipment further includes a feed pipe, one end of which extends into the interior of the stirring device.

[0014] As an optional technical solution, the tank is provided with a visual window, and the visual window is used to see through the stirring conditions inside the tank.

[0015] Beneficial effects of the utility model:

[0016] The stirring device provided by the utility model comprises a connecting plate, a mounting plate and at least two blades. The at least two blades are spaced apart between the connecting plate and the mounting plate, and two ends of the blades are respectively connected to the connecting plate and the mounting plate.

[0017] The connecting plate, mounting plate and blades of this embodiment can all stir the organic coating, wherein the two ends of the blade are respectively connected to the connecting plate and the mounting plate. The stirring direction of the organic coating by the blade is different from the stirring direction of the organic coating by the connecting plate and the mounting plate. The organic coating can flow in multiple directions, increasing the probability of fusion between tiny bubbles to form larger bubbles. As the volume increases, the buoyancy of the bubbles also increases, and then they float to the surface of the organic coating and burst to discharge gas. The organic coating is fully stirred and the defoaming efficiency is improved.

[0018] The defoaming equipment provided by the utility model includes a vacuum system, a tank barrel, a power piece and the above-mentioned stirring device. The vacuum system is used to vacuum the tank barrel, the stirring device is arranged inside the tank barrel, the output end of the power piece is transmission-connected to the connecting plate of the stirring device, and the power piece is used to drive the stirring device to rotate.

[0019] When the power part drives the stirring device to stir the organic coating in the barrel, the vacuum system evacuates the barrel. Since the organic coating is fully stirred by the stirring device, the speed at which the bubbles float up is accelerated. Under negative pressure conditions, the bubbles in the organic coating will quickly burst and the gas will be discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the stirring device of the present invention from a first perspective;

[0021] Figure 2 This is a structural schematic diagram of the stirring device of the present invention from a second perspective;

[0022] Figure 3 It is a structural schematic diagram of the defoaming equipment of the utility model;

[0023] Figure 4 It is a cross-sectional view of the defoaming equipment of the present utility model.

[0024] In the picture:

[0025] 1. Stirring device; 11. Connecting plate; 12. Blade; 121. First end; 122. Second end; 13. Mounting plate; 131. Feed port;

[0026] 2. Tanks; 21. Visible window;

[0027] 3. Power parts;

[0028] 4. Feed pipe. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0030] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0033] like Figure 1 and Figure 2 As shown, this embodiment provides a stirring device 1, which includes a connecting plate 11, a mounting plate 13 and at least two blades 12. The at least two blades 12 are spaced apart between the connecting plate 11 and the mounting plate 13, and the two ends of the blades 12 are respectively connected to the connecting plate 11 and the mounting plate 13.

[0034] Specifically, the connecting plate 11, the mounting plate 13 and the blade 12 can all stir the organic coating, wherein the two ends of the blade 12 are respectively connected to the connecting plate 11 and the mounting plate 13. The stirring direction of the organic coating by the blade 12 is different from the stirring direction of the organic coating by the connecting plate 11 and the mounting plate 13. The organic coating can flow in multiple directions, the organic coating is fully stirred, and the defoaming efficiency is improved.

[0035] Organic coatings can flow in multiple directions, increasing the probability of fusion between tiny bubbles to form larger bubbles. As the volume increases, the buoyancy of the bubbles also increases, causing them to float to the surface of the organic coating and burst to discharge gas.

[0036] In this embodiment, the connecting plate 11 and the mounting plate 13 are both circular plates. The connecting plate 11 is arranged parallel to the mounting plate 13. The central axis of the connecting plate 11 coincides with the central axis of the mounting plate 13. A plurality of blades 12 are arranged at equal intervals around the central axis of the connecting plate 11. When the stirring device 1 rotates rapidly around the central axis of the connecting plate 11, the centrifugal forces acting on the blades 12 are relative, and the stirring forces exerted by the blades 12 on the organic coating are also consistent.

[0037] In this embodiment, the rotation center line of the stirring device 1 is a vertical line, and the vertical line is perpendicular to the connecting plate 11 and the mounting plate 13 .

[0038] In some other embodiments, the rotation center line of the stirring device 1 is a horizontal line or is set at an angle to the vertical line, and the rotation center line of the stirring device 1 is perpendicular to the connecting plate 11 and the mounting plate 13.

[0039] In some other embodiments, the connecting plate 11 and the mounting plate 13 are both square plates.

[0040] In some other embodiments, the connecting plate 11 and the mounting plate 13 are arranged non-parallel, and the plane where the connecting plate 11 is located and the plane where the mounting plate 13 is located are arranged at an angle.

[0041] Optionally, the number of blades 12 arranged between the connecting plate 11 and the mounting plate 13 is 4 to 16, for example, the number of blades 12 is 4, or 6, or 8, or 10, or 12, or 14, or 16, preferably, the number of blades 12 is 8.

[0042] Optionally, the thickness of the blade 12 is 1 mm to 20 mm, for example, the thickness of the blade 12 is 1 mm, or 5 mm, or 10 mm, or 15 mm, or 20 mm.

[0043] Optionally, the interior of the stirring device 1 is a feed space, and the connecting plate 11, the mounting plate 13 and at least two blades 12 surround the circumference of the feed space. At least one of the connecting plate 11 and the mounting plate 13 is provided with a feed port 131, and the feed port 131 is connected to the feed space.

[0044] The organic coating is injected into the feeding space of the stirring device 1 from the feeding port 131 . When the stirring device 1 rotates, the organic coating is discharged from the gap between two adjacent blades 12 due to the centrifugal force, ensuring that all the organic coating is stirred by the blades 12 .

[0045] In this embodiment, the connecting plate 11 and the mounting plate 13 are spaced apart in the vertical direction. The mounting plate 13 is located at the bottom of the connecting plate 11, and the feed port 131 is provided in the mounting plate 13. The organic coating material rises from the bottom, passes through the feed port 131, and enters the feed space. It is blocked by the connecting plate 11, and all of the organic coating material passes through the gap between two adjacent blades 12 and is ultimately discharged to the outside of the stirring device 1.

[0046] In some other embodiments, both the connecting plate 11 and the mounting plate 13 are provided with a feed port 131 . Alternatively, the feed port 131 is provided on the connecting plate 11 .

[0047] Optionally, the blade 12 has a first end 121 connected to the connecting plate 11 and a second end 122 connected to the mounting plate 13 , and a projection of the first end 121 on the connecting plate 11 forms an angle with a projection of the second end 122 on the connecting plate 11 .

[0048] In the vertical direction, the projection of the first end 121 and the projection of the second end 122 form an angle rather than overlap, indicating that the two ends of the blade 12 are not parallel, the surface area of ​​the blade 12 is larger, and the area in contact with the organic coating is larger.

[0049] In this embodiment, the blades 12 are of a spiral structure, and the blades 12 spirally rise around a vertical line. The feed pipe 4 passes through the bottom wall of the barrel 2 and extends into the feed space through the feed port 131. The feed pipe 4 injects organic paint into the feed space, and the organic paint in the feed space is discharged from the gap between two adjacent blades 12. When the organic paint in the barrel 2 meets the volume requirement, the feed pipe 4 stops injecting organic paint into the feed space. At this time, the stirring device 1 continues to stir, and the connecting plate 11 continues to drive the multiple blades 12 to rotate around the vertical line. Since the blades 12 are of a spiral structure and the surface of the blades 12 is a curved surface, the blades 12 can push the organic paint outside the stirring device 1 into the inside of the stirring device 1, which ensures that the organic paint can continue to stir. The organic coating can continue to enter and exit the feed space, avoiding the organic coating being unable to enter the feed space due to the influence of centrifugal force; the spiral structure of the blade 12 has a guiding effect on the organic coating, so that the flow path of a part of the organic coating is also a spiral path. After increasing the contact area between the organic coating and the blade 12 and extending the flow path of the organic coating, the organic coating can be fully stirred and the flow speed of the organic coating is accelerated. After the flow speed of the organic coating increases, the probability of fusion between tiny bubbles increases, forming larger bubbles. As the volume increases, the buoyancy of the bubbles also increases, and then floats to the surface of the organic coating and bursts to discharge gas.

[0050] Optionally, at least one rotating curved surface or a wavy curved surface is provided on the side of the blade 12 facing the connecting plate 11. The side of the blade 12 facing the connecting plate 11 is a spiral curved surface, which increases the contact area between the blade 12 and the organic coating.

[0051] Optionally, at least one rotating curved surface or wavy curved surface is provided on the side of the blade 12 facing away from the connecting plate 11. The side of the blade 12 facing the mounting plate 13 is a spiral curved surface, which increases the contact area between the blade 12 and the organic coating.

[0052] In this embodiment, the width of the blade 12 gradually changes along the direction from the mounting plate 13 to the connecting plate 11. Therefore, the lengths of the two ends of the blade 12 are not equal, that is, the lengths of the first end 121 and the second end 122 are not equal, forming a difference. When the organic coating flows along the surface of the blade 12, the flow speed forms a difference, which is conducive to the fusion of tiny bubbles.

[0053] In some other embodiments, the width of the blade 12 remains constant along the direction from the mounting plate 13 to the connecting plate 11 .

[0054] In some other embodiments, the lengths of the first ends 121 of two adjacent blades 12 on the connecting plate 11 are not equal; and / or the lengths of the second ends 122 of two adjacent blades 12 on the mounting plate 13 are not equal.

[0055] In this embodiment, the lengths of the first ends 121 of two adjacent blades 12 on the connecting plate 11 are equal, and the lengths of the second ends 122 of two adjacent blades 12 on the mounting plate 13 are equal.

[0056] like Figure 3 and Figure 4 As shown, this embodiment also provides a defoaming device, which includes a vacuum system, a tank barrel 2, a power piece 3 and the above-mentioned stirring device 1. The vacuum system is used to vacuum the tank barrel 2, and the stirring device 1 is arranged inside the tank barrel 2. The output end of the power piece 3 is transmission-connected to the connecting plate 11 of the stirring device 1, and the power piece 3 is used to drive the stirring device 1 to rotate.

[0057] Specifically, when the power component 3 drives the stirring device 1 to stir the organic paint in the tank barrel 2, the vacuum system evacuates the tank barrel 2. Since the organic paint is fully stirred by the stirring device 1, the speed at which the bubbles float up is accelerated. Under negative pressure conditions, the bubbles in the organic paint will quickly burst and the gas will be discharged.

[0058] Optionally, the vacuum system includes a vacuum pump.

[0059] Optionally, the tank barrel 2 is made of stainless steel.

[0060] Optionally, the power member 3 is a motor, and the power member 3 is installed on the top of the tank barrel 2 to prevent liquid leakage from causing a short circuit in the power member 3.

[0061] Optionally, the tank barrel 2 further includes a tank bottom and a tank wall, and the tank bottom and the tank wall are integrally formed.

[0062] Optionally, the tank barrel 2 further includes an upper cover, which is connected to the tank wall by a flange and sealed by a sealing ring.

[0063] Optionally, a pressure gauge and a pressure relief valve are provided on the top of the tank barrel 2. The pressure gauge is used to detect the air pressure inside the tank barrel 2, and the pressure relief valve is used to adjust the air pressure inside the tank barrel 2.

[0064] Optionally, the defoaming device further includes a feed pipe 4 , one end of which extends into the interior of the stirring device 1 .

[0065] The feed pipe 4 passes through the bottom of the tank barrel 2 in a vertical direction and penetrates into the interior of the stirring device 1. The organic paint is input into the interior of the stirring device 1 from the feed pipe 4. The stirring device 1 is driven by the power part 3 to rotate around the vertical line. The organic paint entering the stirring device 1 performs centrifugal motion and is thrown onto the inner wall of the tank barrel 2. During this process, bubbles float up and are exposed on the upper surface of the organic paint. The bubbles burst due to the negative pressure of the vacuum system. The organic paint adhered to the inner wall of the tank barrel 2 has completed the defoaming process and then flows downward along the inner wall of the tank barrel 2. In the negative pressure environment, this part of the organic paint will not regenerate bubbles, thereby achieving the defoaming purpose.

[0066] Optionally, the tank barrel 2 is provided with a visual window 21 , and the visual window 21 is used to see through the stirring conditions inside the tank barrel 2 .

[0067] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A stirring device, characterized in that: It comprises a connecting plate (11), a mounting plate (13) and at least two blades (12), wherein the at least two blades (12) are arranged between the connecting plate (11) and the mounting plate (13) at intervals, and the two ends of the blades (12) are respectively connected to the connecting plate (11) and the mounting plate (13); The interior of the stirring device (1) is a feed space, the connecting plate (11), the mounting plate (13) and at least two blades (12) surround the circumference of the feed space, and at least one of the connecting plate (11) and the mounting plate (13) is provided with a feed port (131), and the feed port (131) is connected to the feed space.

2. The stirring device according to claim 1, characterized in that The connecting plate (11) and the mounting plate (13) are spaced apart in a vertical direction, the mounting plate (13) is located at the bottom of the connecting plate (11), and the feed port (131) is opened on the mounting plate (13).

3. The stirring device according to any one of claims 1 to 2, characterized in that: The blade (12) has a first end (121) connected to the connecting plate (11) and a second end (122) connected to the mounting plate (13), wherein a projection of the first end (121) on the connecting plate (11) and a projection of the second end (122) on the connecting plate (11) form an angle.

4. The stirring device according to claim 3, characterized in that At least one rotating curved surface or a wavy curved surface is provided on a side of the blade (12) facing the connecting plate (11); And / or, at least one rotational curved surface or a wavy curved surface is provided on a side of the blade (12) facing away from the connecting plate (11).

5. The stirring device according to claim 4, characterized in that Along the direction from the mounting plate (13) to the connecting plate (11), the width of the blade (12) changes gradually.

6. The stirring device according to claim 5, characterized in that The lengths of the first ends (121) of two adjacent blades (12) on the connecting plate (11) are unequal; And / or, the lengths of the second ends (122) of two adjacent blades (12) on the mounting plate (13) are unequal.

7. Defoaming equipment, characterized in that, The invention comprises a vacuum system, a tank barrel (2), a power member (3) and a stirring device (1) as described in any one of claims 1 to 6, wherein the vacuum system is used to evacuate the tank barrel (2), the stirring device (1) is arranged inside the tank barrel (2), the output end of the power member (3) is connected to the connecting plate (11) of the stirring device (1), and the power member (3) is used to drive the stirring device (1) to rotate.

8. The defoaming device according to claim 7, characterized in that The defoaming device further comprises a feed pipe (4), one end of which extends into the interior of the stirring device (1).

9. The defoaming device according to claim 7, characterized in that The tank barrel (2) is provided with a visual window (21), and the visual window (21) is used to see through the stirring situation inside the tank barrel (2).

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