Vacuum continuous defoaming device

Abstract

The utility model relates to a kind of vacuum continuous defoaming devices, including container and the defoaming disc being located in container, the transmission main shaft of being fixedly connected with the defoaming disc and driving the defoaming disc rotation is equipped on the container, and the discharge pipe of extending into the defoaming disc, the feeding pipe of extending into the defoaming disc is equipped in the transmission main shaft inside, the defoaming disc inside is also equipped with baffle, the baffle is oppositely arranged with the one end of the feeding pipe extending into the defoaming disc inside and is formed with the guiding passage different from feeding direction together.The utility model enters the center of defoaming disc to slippage constantly to the outside under the action of centrifugal force, baffle controls film thickness, and it is favorable to uniform filmization process.In vacuum environment, after filmization, slurry bubble is exposed on surface, and it is easier to break, to reach the purpose of bubble elimination.

Description

Technical Field

[0001] This utility model relates to the field of degassing treatment, and more particularly to a vacuum continuous degassing device for slurry degassing. Background Technology

[0002] In the current lithium battery manufacturing industry, between the preparation of the slurry and the coating process, it is necessary to eliminate air bubbles in the slurry to improve coating quality. Generally, chemical defoaming methods using defoamers can contaminate raw materials or cause adverse reactions. Vacuum stirring defoaming technology involves simultaneously creating a vacuum and stirring in a sealed container to remove bubbles, but it is difficult to remove bubbles from specific lithium battery slurries. Summary of the Invention

[0003] The purpose of this invention is to provide a vacuum continuous degassing device that can solve the above-mentioned problems.

[0004] According to the technical solution provided by this utility model: a vacuum continuous degassing device includes a container and a degassing disc disposed in the container. A transmission main shaft fixedly connected to the degassing disc and driving the degassing disc to rotate is provided on the container, and a discharge pipe extending into the degassing disc is provided. A feed pipe extending into the degassing disc is provided inside the transmission main shaft. A baffle is also provided inside the degassing disc. The baffle and one end of the feed pipe extending into the degassing disc are arranged opposite to each other and together form a guide channel with a different direction from the feeding direction.

[0005] As a further improvement of this utility model, the defoaming disc has a base fixedly connected to the transmission main shaft and a curved portion that expands radially from the base and contracts axially, and the baffle is disposed opposite to the base.

[0006] As a further improvement of this utility model, the discharge pipe extends into the degassing disc from the side away from the base.

[0007] As a further improvement of this utility model, one end of the discharge pipe that extends into the defoaming disc is located at the furthest radial distance from the curved portion and is tangential to the curved portion.

[0008] As a further improvement of this utility model, the transmission main shaft is hollow, and the feed pipe is sleeved inside the transmission main shaft.

[0009] As a further improvement of this utility model, the transmission spindle and the discharge pipe are respectively installed at opposite ends of the degassing disc.

[0010] As a further improvement of this utility model, the baffle is fixedly connected to one end of the feed pipe.

[0011] As a further improvement of this utility model, the baffle has a connecting part, which passes through the degassing disc and is fixed to the inner wall of the container.

[0012] As a further improvement of this utility model, the baffle has a connecting part, which is fixed on the discharge pipe.

[0013] As a further improvement of this utility model, the baffle is configured as a flat plate, a concave shape, or a convex shape.

[0014] The positive and progressive effects of this application are as follows: 1. In this invention, the slurry enters at the center of the degassing disc and slides outward continuously under centrifugal force. The baffle controls the film thickness, which is beneficial for the uniform film formation process. Under vacuum conditions, after film formation, air bubbles in the slurry are exposed on the surface and are more likely to break, thus achieving the purpose of bubble elimination. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0016] Figure 2 This is a horizontal schematic diagram of Embodiment 1 of the present utility model.

[0017] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the baffle of this utility model. Detailed Implementation

[0019] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein. Furthermore, terms such as "comprising" and "having" mean that in addition to those already listed in "comprising" and "having," other unlisted contents may also be included; for example, a process, method, system, product, or device may include a series of steps or units, not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0022] Due to the angle of the drawing, some parts may not be drawn, but their positions and connections can be understood from the text descriptions.

[0023] like Figure 1 As shown, this utility model is a vacuum continuous degassing device, including a container 4, a vacuum tube 7 and a discharge tube 8 installed on the top of the container 4, a degassing disc 5 in the middle of the container 4, the upper end of the discharge tube 8 extending out of the container 4 and the lower end tightly attached to the upper inner wall of the degassing disc 5, a drive shaft 3 fixedly connected to the bottom of the degassing disc 5, a feed tube 16 in the drive shaft 3, the upper end of the feed tube 16 communicating with the degassing disc 5, the middle of the drive shaft 3 rotatably connected to the bottom of the container 4, a rotary joint 2 installed at the bottom of the drive shaft 3, the rotary joint 2 communicating with the bottom of the feed tube 16, and a baffle 9 above the drive shaft 3. The drive shaft 3 is driven to rotate by a motor 1.

[0024] Motor 1 drives the transmission shaft 3 and the defoaming disc 5 to rotate.

[0025] The defoaming disc 5 has a frustum structure with an exhaust port 6 at the top. The defoaming disc 5 gradually tapers from top to bottom. This structure allows the air bubbles in the slurry to be thrown along the inner wall to the upper part of the defoaming disc 5 by using centrifugal force to move outward.

[0026] The bottom of the debubbling disc 5 and the transmission main shaft 3 can be fixedly connected by welding or other methods, and the two are sealed.

[0027] Vacuum port 7 is connected to a vacuum pump to maintain a vacuum environment inside container 4.

[0028] The discharge pipe 8 is L-shaped, and the upper part of the discharge pipe 8 is fixed to the top of the container 4.

[0029] A sealing gasket is provided between container 4 and the main drive shaft to prevent slurry from flowing out from the bottom of container 4.

[0030] like Figure 4As shown, the baffle 9 is selected according to the viscosity of the specific slurry. For high-viscosity slurries, the baffle 9 has a concave shape with the side baffles curving upwards, which facilitates the movement of the high-viscosity slurry along the circumferential direction and reduces the adhesion between the high-viscosity slurry and the baffle 9. For low-viscosity slurries, the baffle 9 has a convex shape with the side baffles curving downwards, preventing the low-viscosity slurry from flowing outwards naturally. For medium-viscosity slurries, the baffle 9 has a flat plate shape.

[0031] Rotary joint 2 is located below container 4.

[0032] Example 1 The output shaft of motor 1 is equipped with a drive drive wheel 10, and the lower part of the drive shaft 3 is equipped with a driven drive wheel 11. The driven drive wheel 11 and the drive drive wheel 10 are connected by a drive belt 12.

[0033] like Figure 1 As shown, the feed pipe 16 has an axial feeding hole and a radial feeding channel. The axial feeding hole vertically penetrates the middle of the feed pipe 16, and the top of the feed pipe 16 has a radial feeding channel. The upper and lower ends of the axial feeding hole are connected to the radial feeding channel and the rotary joint 2, respectively. The top of the drive shaft 3 is connected to the bottom of the degassing disc 5. The bottom of the degassing disc 5 has a through hole, through which the top of the feed pipe 16 passes and is fixedly connected to the baffle 9. The radial feeding channel and the baffle 9 are located at the bottom of the degassing disc 5.

[0034] The slurry enters the feed pipe 16 from the rotary joint 2, flows upward along the axial feed hole, and after contacting the baffle 9, it flows into the bottom of the defoaming disc 5 along the radial feed channel under the action of centrifugal force.

[0035] It should be understood that the device in this embodiment is vertical, such as... Figure 2 As shown, if this embodiment is changed to a horizontal position, the device can still work normally.

[0036] Example 2 The output shaft of motor 1 is equipped with a drive gear 13, and the lower part of the transmission main shaft 3 is equipped with a driven gear 14, which meshes with the drive gear 13.

[0037] like Figure 3 As shown, the feed pipe 16 is provided with an axial slurry hole, the lower end of which is connected to the rotary joint 2. The top of the drive shaft 3 is connected to the bottom of the defoaming disc 5, and the bottom of the defoaming disc 5 has a slurry outlet hole, which is connected to the top of the axial slurry hole.

[0038] The baffle 9 is located above the drive shaft 3, with a discharge gap between them. The baffle 9 is installed in the container 4 via a connecting rod 15. The upper end of the connecting rod 15 is connected to the top of the container 4, and the lower part of the connecting rod 15 is located in the container 4 and connected to the baffle 9.

[0039] The slurry enters the feed pipe 16 from the rotary joint 2, and is discharged upward along the axial slurry hole. After entering the deaerator 5 and contacting the baffle 9, it flows radially to the bottom of the deaerator 5 under the action of centrifugal force.

[0040] It should be understood that the device in this embodiment is vertical. If this embodiment is changed to horizontal, the device can still work normally.

[0041] The working process of this utility model is as follows: The slurry flows continuously from the rotary joint 2 through the feed pipe 16 to the bottom center of the deaeration disc 5. The motor 1 drives the transmission shaft 3 and the deaeration disc 5 to rotate. The structure of the slurry gradually contracting from top to bottom, combined with centrifugal force, pushes the slurry against the inner wall of the deaeration disc 5 and continuously moves it upward. The baffle controls the thickness of the slurry, which is conducive to the uniform thin film formation of the slurry. During the process of the thin film slurry contacting the inner wall of the deaeration disc 5, due to the action of centrifugal force, the air bubbles in the slurry are separated from the slurry and discharged from the vacuum port 7 into the container 4. The slurry with the air bubbles removed continues to move upward and is discharged from the discharge pipe 8 into the container 4.

[0042] 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 vacuum continuous degassing device, characterized in that, The device includes a container and a degassing disc disposed inside the container. The container is provided with a drive shaft that is fixedly connected to the degassing disc and drives the degassing disc to rotate, and a discharge pipe that extends into the degassing disc. The drive shaft is provided with a feed pipe that extends into the degassing disc. The degassing disc is also provided with a baffle. The baffle and the end of the feed pipe that extends into the degassing disc are arranged opposite to each other and together form a guide channel that is different from the feeding direction.

2. The vacuum continuous degassing device as described in claim 1, characterized in that, The defoaming disc has a base fixedly connected to the transmission main shaft and a curved portion that expands radially from the base and contracts axially, and the baffle is disposed opposite to the base.

3. The vacuum continuous degassing device as described in claim 2, characterized in that, The discharge pipe extends into the debubbling disc from the side away from the base.

4. The vacuum continuous degassing device as described in claim 2, characterized in that, The end of the discharge pipe that extends into the defoaming disc is furthest radially from the curved portion and is tangential to the curved portion.

5. The vacuum continuous degassing device as described in claim 1, characterized in that, The drive shaft is hollow, and the feed tube is sleeved inside the drive shaft.

6. The vacuum continuous degassing device as described in claim 1, characterized in that, The drive shaft and the discharge pipe are respectively installed at opposite ends of the degassing disc.

7. The vacuum continuous degassing apparatus as described in claim 1, characterized in that, The baffle is fixedly connected to one end of the feed pipe.

8. The vacuum continuous degassing device as described in claim 1, characterized in that, The baffle has a connecting part through which the degassing disc passes and is fixed to the inner wall of the container.

9. The vacuum continuous degassing apparatus as described in claim 1, characterized in that, The baffle has a connecting part, which is fixed to the discharge pipe.

10. The vacuum continuous degassing apparatus as described in claim 1, characterized in that, The baffle can be flat, concave, or convex.

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