CN202270389U - Slurry defoaming device - Google Patents

Abstract

The utility model discloses a slurry defoaming device, which comprises a driving device and a vacuum container, wherein the vacuum container is provided with a slurry inlet and a slurry outlet. The slurry defoaming device also comprises a tray, a slurry inlet pipe arranged on the slurry inlet, a quantitative slurry feeding pump connected with the slurry inlet pipe, a slurry outlet pipe arranged on the slurry outlet, a quantitative slurry discharging pump connected with the slurry outlet pipe, and a controlling module, wherein the tray is arranged in the vacuum container and connected with the driving device through an axle, the outlet of the slurry outlet pipe is arranged above the tray, and the controlling module is respectively connected with the driving device, the quantitative slurry feeding pump and the quantitative slurry discharging pump. The slurry defoaming device has the advantages of simple structure and good defoaming effect.

Description

Slurry degassing device

technical field

The utility model relates to a degassing device, in particular to a slurry degassing device suitable for the degassing treatment of the prepared high-viscosity slurry.

Background technique

Lithium-ion batteries have the advantages of high voltage, high specific energy, many cycle times, and long storage time. They are widely used in large and medium-sized electric equipment such as electric vehicles, electric bicycles, and electric tools. Therefore, the performance and cost requirements of lithium-ion batteries Higher and higher. When the current lithium-ion power battery is coated, the slurry supply is supplied by a pump. The consistency of the pole piece is good and there is no thick area, but the slurry supply is carried out in the pipeline, and the tiny air bubbles in the slurry If it cannot be discharged, bubbles will be generated as the slurry is applied to the pole piece, and a pit will be formed after the bubble bursts, which will cause the phenomenon of lithium precipitation in the battery and pose a safety hazard to the battery.

In order to remove the air bubbles in the slurry, the traditional method is to achieve degassing by stirring the slurry in the slurry container under vacuum conditions after the pulping is completed, as disclosed in a Chinese utility model patent with the authorized announcement number CN201930581U Degassing machine, which improves the degassing effect by setting the auxiliary container that can revolve while rotating. The degassing machine with this structure has high bubble degassing speed and good degassing effect, and is suitable for degassing of large viscosity slurry However, the structure is complicated because it needs to set a transmission assembly to drive the linkage rod, multiple auxiliary stirring paddles and drive the rotation and revolution of the auxiliary container.

Utility model content

The technical problem to be solved by the utility model is to provide a slurry degassing device with a simple structure and good degassing effect in view of the shortcomings of the slurry degassing device in the prior art.

In order to solve the above technical problems, the slurry degassing device of the present utility model includes a driving device and a vacuum container, and the vacuum container has a slurry inlet and a slurry outlet. The slurry degassing device of the present utility model also includes: a tray , a slurry inlet pipe arranged at the slurry inlet, a quantitative feeding pump connected with the slurry inlet pipe, a slurry outlet pipe arranged at the slurry outlet, a slurry outlet connected with the slurry outlet Quantitative discharge pump and a control module. Wherein, the tray is arranged in the vacuum container and is connected with the driving device through a shaft; the outlet of the slurry feeding pipe is located above the tray; the control module is connected with the driving device, the quantitative The feed pump is connected to the quantitative discharge pump respectively.

In the above slurry degassing device, a liquid level sensor connected to the control module is arranged in the vacuum container.

In the above-mentioned slurry degassing device, the capacity of the vacuum container is 200-400L.

The above-mentioned slurry degassing device, wherein, the vacuum container includes a cylindrical container body and a conical container body integrally formed with each other, the conical container body is relatively below the cylindrical container body, and the slurry inlet The mouth is arranged on the cylindrical container body, and the slurry outlet is arranged on the tapered container body.

In the above-mentioned slurry degassing device, a vacuum valve is arranged on the cylindrical container body, and the vacuum valve is connected with a vacuum pumping device.

The above-mentioned slurry degassing device, wherein, the driving device is installed on the cylindrical container body through a fixed plate, and the fixed plate has a corresponding slurry inlet for the slurry inlet pipe through holes.

In the above-mentioned slurry degassing device, a protrusion of 30-50 mm is provided on the edge of the tray.

The above slurry degassing device, wherein, the outlet of the slurry inlet pipe has a distance of 40-60 mm from the upper surface of the tray.

In the above slurry degassing device, a slurry supply valve is arranged on the slurry inlet pipe.

The above slurry degassing device, wherein, the slurry outlet pipe is provided with a slurry outlet valve.

The beneficial effect of the utility model is that the slurry is hit on the tray by the quantitative feeding pump, the driving device drives the tray to rotate at high speed, and the slurry is hit on the wall of the vacuum container by the centrifugal force. With the action of vacuum, the bubbles will be quickly broken by the vacuum to achieve the purpose of defoaming; moreover, both the feed pump and the discharge pump are quantitative pumps, which can make the amount of feed and discharge the same. The utility model not only has a simple structure, but also has good slurry degassing effect. In addition, the slurry degassing process does not occupy the pulping equipment, which improves the utilization rate of the pulping equipment, reduces the investment in equipment, and provides a guarantee for continuous production.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

Fig. 1 is a structural diagram of a slurry degassing device of the present invention.

Among them, reference signs

1-Drive unit

2- Vacuum valve

3- Fixed plate

4-axis

5- Quantitative feeding pump

6-Slurry supply valve

7- Liquid level sensor

8-tray

81-raised

82-upper surface

9- Vacuum container

91-cylindrical container body

911-Pulp inlet

92-tapered container body

921-Pulp outlet

10-quantitative discharge pump

11-Control Module

12-Slurry valve

13-Slurry inlet pipe

14-Pulp outlet pipe

Detailed ways

The slurry degassing device of the present utility model is described in detail below in conjunction with the accompanying drawings:

Referring to Fig. 1 the structural diagram of the slurry degassing device of the present utility model, as shown in the figure, the slurry degassing device of the present utility model comprises a driving device 1, a vacuum container 9, a tray 8, a slurry inlet pipe 13, a quantitative supply A material pump 5, a slurry discharge pipe 14, a quantitative discharge pump 10 and a control module 11. The control module 11 is connected with the driving device 1 , the quantitative feeding pump 5 and the quantitative discharging pump 10 respectively.

As a preferred embodiment, the capacity of the vacuum container 9 is 200-400L, and the vacuum container 9 includes a cylindrical container body 91 and a conical container body 92 that are integrally formed with each other, and the conical container body 92 is relatively located in the cylindrical container body 91. Below, a slurry inlet 911 is arranged on the cylindrical container body 91 , and a slurry outlet 921 is arranged on the conical container body 92 . A vacuum valve 2 is arranged on the cylindrical container body 91, and the vacuum valve 2 is connected with a vacuum device (not shown in the figure), and the vacuum device can be a vacuum machine to evacuate the vacuum container. The driving device 1 is installed on the cylindrical container body 91 through a fixed disk 3, and the fixed disk 91 has a through hole corresponding to the slurry inlet 911 for the slurry inlet pipe 13 to pass through. The driving device 1 can adopt a motor, A shaft 4 extends below the motor, and the shaft 4 is fixedly connected to the tray 8, and the tray 8 is arranged in the vacuum container 9 through such an arrangement, and the edge of the tray 8 has a protrusion 81 of 30-50 mm. The pulp inlet pipe 13 is arranged at the pulp inlet 911 , and the outlet of the pulp inlet pipe 13 is located above the tray 8 , and the distance between the outlet of the pulp inlet pipe 13 and the upper surface 82 of the tray 8 is preferably 40-60 mm. Quantitative feeding pump 5 is connected with slurry feeding pipe 13, and slurry feeding valve 6 is arranged on slurry feeding pipe 13. The pulp outlet pipe 14 is arranged at the pulp outlet 921, the quantitative discharge pump 10 is connected with the pulp outlet pipe 14, and the pulp outlet pipe 14 is provided with a pulp outlet valve 12.

Further, a liquid level sensor 7 connected to the control module 11 is arranged in the vacuum container 9 .

The working process of the present utility model can be set as follows: close the slurry supply valve 6 and the slurry output valve 12, open the vacuum valve 2, and carry out vacuuming operation in the vacuum container 9 through a vacuum pumping device, when the vacuum degree in the vacuum container 9 reaches- When it is above 0.095MPa, open the slurry supply valve 6, open the quantitative feed pump 5, set the flow rate, and when the slurry flows to the tray 8 through the slurry inlet pipe 13, open the motor 1 (that is, the driving device) and set the speed ( Such as, the rotating speed is set to 3000-4000 rpm), due to the effect of centrifugal force, the slurry is dropped on the wall of the vacuum container 9 by the rotating disk 8 rotating at high speed, and the air bubbles in the slurry are broken by the vacuum, when the slurry When the liquid level reaches half of the container, open the slurry discharge valve 12, turn on the quantitative discharge pump 10, set the same flow rate as the feed, and the defoamed slurry is transferred out by the discharge pump 10. It has been verified that the slurry after defoaming by this method has no bubbles at all, which can well meet the requirements of lithium ion power battery coating.

It should be noted that the vacuum container 9 is not limited to the above structure, and may be in other shapes.

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (10)

1. a slurry defoaming device comprises drive unit and vacuum tank, has stock inlet and grout outlet on the said vacuum tank, it is characterized in that, also comprises:

One pallet, said pallet are arranged in the said vacuum tank and through one and are connected with said drive unit;

One is arranged at the pulp-inlet pipe of said stock inlet, and the outlet of said pulp-inlet pipe is positioned at the top of said pallet;

The one quantitative charging pump that links to each other with said pulp-inlet pipe;

One is arranged at the grout outlet of said grout outlet;

The one quantitative discharging pump that links to each other with said grout outlet; And

One control module, said control module links to each other respectively with said drive unit, said quantitative charging pump and said quantitative discharging pump.

2. slurry defoaming device according to claim 1 is characterized in that, is provided with the level sensor that is connected with said control module in the said vacuum tank.

3. slurry defoaming device according to claim 1 is characterized in that, the capacity of said vacuum tank is 200～400L.

4. slurry defoaming device according to claim 1; It is characterized in that; Said vacuum tank comprises mutual integrated cylindrical container body and conical vessel body; Said conical vessel body is in the below of said cylindrical container body relatively, and said stock inlet is arranged on the said cylindrical container body, and said grout outlet is arranged on the said conical vessel body.

5. slurry defoaming device according to claim 4 is characterized in that, said cylindrical container body is provided with a vacuum valve, and said vacuum valve links to each other with a vacuum extractor.

6. slurry defoaming device according to claim 4 is characterized in that, said drive unit is installed on the said cylindrical container body through a fixed disk, has on the said fixed disk and the corresponding through hole that passes for said pulp-inlet pipe of said stock inlet.

7. according to any described slurry defoaming device among the claim 1-6, it is characterized in that the edge of said pallet is provided with the convexity of 30～50mm.

8. according to any described slurry defoaming device among the claim 1-6, it is characterized in that the outlet of said pulp-inlet pipe and the upper surface of said pallet have the distance of 40～60mm.

9. according to any described slurry defoaming device among the claim 1-6, it is characterized in that said pulp-inlet pipe is provided with the confession slurry valve.

10. according to any described slurry defoaming device among the claim 1-6, it is characterized in that said grout outlet is provided with the pulp valve.

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