Slurry defoaming device

Abstract

The utility model relates to the field of defoaming machines, in particular to a slurry defoaming device which comprises a defoaming tank and a control system, a vacuum pipeline and a vacuum breaking pipeline are arranged on the defoaming tank, a vacuum source is arranged on the vacuum pipeline, a compressed gas valve is arranged on the vacuum breaking pipeline, and the vacuum breaking pipeline is connected with the compressed gas source. The control system is connected with the compressed gas valve and the vacuum valve. According to the slurry defoaming device, slurry needing to be subjected to defoaming treatment is loaded into the defoaming tank through the feeding pipeline to be subjected to vacuumizing treatment, when the vacuum degree reaches the specified pressure, the vacuum degree is kept for a period of time, and after the time of the vacuum state reaches the specified value, the slurry is subjected to vacuum breaking treatment through the vacuum breaking pipeline; compressed gas is introduced into the defoaming tank, the pressure is increased to a specified value and then kept for a period of time, the vacuum breaking pipeline is connected with a compressed gas source, gas in the compressed gas source is dry and clean compressed gas, and the vacuum breaking efficiency is higher by adopting the compressed gas.

Description

Technical Field

[0001] The utility model relates to the field of degassing machines, in particular to a slurry degassing device. Background Art

[0002] In the battery manufacturing process, the high-speed premixing and dispersing module in the circulating high-efficiency pulping system can only maintain a slight negative pressure, which leads to the introduction of a large amount of gas into the slurry to form bubbles, and the bubbles will lead to defective products in the coating process, so the slurry needs to be defoamed. The existing vacuum defoaming method is generally controlled manually, and the whole process is monotonous and repetitive, and lasts for a long time. There are unstable factors in human control, which affects product quality. Utility Model Content

[0003] The utility model aims to provide a slurry degassing device to solve the problems of low degassing efficiency and unstable quality in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A slurry degassing device comprises a degassing tank and a control system, wherein the degassing tank is provided with a vacuum pipe and a vacuum breaking pipe, the vacuum pipe is provided with a vacuum source, the vacuum breaking pipe is provided with a compressed gas valve, the vacuum breaking pipe is connected to the compressed gas source, and the control system is connected to the compressed gas valve and the vacuum valve.

[0006] The slurry degassing device is to load the slurry to be degassing into the degassing tank, use the vacuum pipe to evacuate the slurry, when the vacuum degree reaches a specified pressure, maintain it for a period of time, when the vacuum state time reaches a specified value, then break the vacuum of the slurry through the vacuum breaking pipe, and pass compressed gas into the degassing tank, the pressure increases to a specified value, and then maintains it for a period of time, and the vacuum breaking pipe is connected to the compressed gas source, the gas in the compressed gas source is dry and clean compressed gas, and the use of compressed gas makes the vacuum breaking more efficient.

[0007] As a preferred solution of the utility model, a first pressure sensor is provided on the degassing tank, a second pressure sensor is provided on the compressed air source, and a liquid level sensor is provided above the degassing tank. The provision of the first pressure sensor and the second pressure sensor enables the control system to detect the pressure of the compressed air source and the degassing tank, thereby achieving precise control of the degassing process.

[0008] As a preferred solution of the utility model, the compressed air source is connected to an air intake pipe, and a filter device is arranged on the air intake pipe. Since there are substances such as moisture and dust in the air, the setting of the filter device makes the gas in the compressed air source dry and clean.

[0009] As a preferred solution of the utility model, a stirring paddle is provided in the degassing tank, a motor is provided outside the degassing tank, and the motor is connected to the stirring paddle. Since the degassing is performed by vacuuming, only the upper surface layer of the slurry can be effectively degassed each time, so a stirring paddle is required to stir the slurry so that the slurry in the lower layer enters the upper surface layer for sufficient degassing.

[0010] As a preferred embodiment of the utility model, the rotation speed range of the stirring paddle is 0-100r / min. The stirring paddle can stir the slurry at a low speed so that the slurry at the lower layer enters the upper surface layer for sufficient degassing, and the low-speed rotation can effectively prevent bubbles from being generated in the slurry during the stirring process.

[0011] As a preferred embodiment of the present invention, two groups of blades are arranged on the stirring paddle, one group of blades is U-shaped, and the other group of blades is oblique blade-shaped. The arrangement of the two groups of different blades makes the slurry more evenly stirred.

[0012] As a preferred solution of the present invention, the pressure in the compressed gas source is 0-5 MPa, so that the compressed gas source can release compressed gas with a gas source pressure of 0-5 MPa.

[0013] As a preferred embodiment of the utility model, the degassing tank is provided with a feed pipe and a discharge pipe, through which the slurry to be degassed can be loaded into the degassing tank, and through the discharge pipe, the slurry that has completed the degassing can be taken out of the degassing tank.

[0014] As a preferred solution of the present invention, the vacuum source can make the pressure in the degassing tank range from -60KPa to -100KPa.

[0015] As a preferred solution of the present invention, the compressed gas source can make the pressure in the degassing tank range from 0KPa to 50KPa.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0017] 1. The slurry degassing device is to load the slurry to be degassed into the degassing tank through the feeding pipe, and the slurry is vacuumed by the vacuum pipe. When the vacuum degree reaches a specified pressure, it is maintained for a period of time. When the vacuum state time reaches a specified value, the slurry is vacuum-broken through the vacuum-breaking pipe. Compressed gas is introduced into the degassing tank, and the pressure increases to a specified value, and then maintained for a period of time. The vacuum-breaking pipe is connected to the compressed gas source. The gas in the compressed gas source is dry and clean compressed gas. The use of compressed gas makes the vacuum breaking more efficient.

[0018] 2. The slurry degassing device is equipped with a stirring paddle to stir the slurry, thereby avoiding the situation where only the upper surface of the slurry can be effectively degassed each time due to the use of vacuum degassing. The slurry in the lower layer can also enter the upper surface layer for sufficient degassing, and the stirring paddle is in a low-speed rotating working state, which can effectively prevent the generation of bubbles in the slurry during the stirring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a schematic diagram of the structure of the degassing tank of the utility model.

[0021] Markings in the figure: 1-degassing tank, 2-stirring paddle, 3-first pressure sensor, 4-vacuum breaking pipe, 5-compressed gas valve, 6-control system, 7-vacuum pipe, 8-vacuum valve, 9-feed valve, 10-feed pipe, 11-discharge pipe, 12-discharge valve, 13-second pressure sensor, 14-intake valve, 15-compressed gas source, 16-liquid level sensor, 17-intake pipe, 18-motor. DETAILED DESCRIPTION

[0022] The utility model is described in detail below in conjunction with the accompanying drawings.

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] Example 1

[0025] like Figure 1 , 2As shown, a slurry degassing device includes a degassing tank 1 and a control system 6, the degassing tank 1 is provided with a vacuum pipe 7 and a vacuum breaking pipe 4, the vacuum pipe 7 is provided with a vacuum source, the vacuum breaking pipe 4 is provided with a compressed gas valve 5, the vacuum breaking pipe 4 is connected to a compressed gas source 15, and the control system 6 is connected to the compressed gas valve 5 and the vacuum valve 8.

[0026] Those skilled in the art can understand that the slurry degassing device loads the slurry to be degassed into the degassing tank 1 through the feed pipe 10, and a feed valve 9 is provided on the feed pipe 10 for control, and then the slurry is vacuumed using the vacuum pipe 7. When the vacuum degree reaches a specified pressure, it is maintained for a period of time. When the vacuum state time reaches a specified value, the slurry is vacuum-broken through the vacuum-breaking pipe 4, and compressed gas is introduced into the degassing tank 1, the pressure is increased to a specified value, and then maintained for a period of time, and the vacuum-breaking pipe 4 is connected to the compressed gas source 15. The gas in the compressed gas source 15 is dry and clean compressed gas. The use of compressed gas makes the vacuum breaking more efficient.

[0027] In a preferred embodiment, a first pressure sensor 3 is provided on the degassing tank 1 , a second pressure sensor 13 is provided on the compressed air source 15 , and a liquid level sensor 16 is provided above the degassing tank 1 .

[0028] Those skilled in the art can understand that the arrangement of the first pressure sensor 3 and the second pressure sensor 13 enables the control system 6 to detect the pressure of the compressed gas source 15 and the degassing tank 1, thereby realizing accurate control of the degassing process, and the arrangement of the liquid level sensor 16 can detect the liquid level of the slurry in the degassing tank 1. In addition, the first pressure sensor 3 is arranged at the top of the degassing tank 1, which can effectively prevent the slurry from contacting the first pressure sensor 3 and causing pressure detection errors of the degassing tank 1. Since the compressed gas source 15 stores dry and clean gas, it can be arranged at any position without restriction.

[0029] In a preferred embodiment, the compressed air source 15 is connected to an air intake pipe 17 , and a filtering device is provided on the air intake pipe 17 .

[0030] Those skilled in the art can understand that in order to ensure that the gas stored in the compressed gas source 15 is dry and clean gas and does not pollute the slurry and affect its chemical properties and physical properties, when the compressed gas source 15 is filled with compressed gas through the air inlet pipe 17, the filtering device can be provided to filter pollutants such as moisture and dust in the air.

[0031] In a preferred embodiment, a stirring paddle 2 is disposed in the degassing tank 1 , and a motor 18 is disposed outside the degassing tank 1 , and the motor 18 is connected to the stirring paddle 2 in a transmission manner.

[0032] Those skilled in the art will understand that since degassing is performed by vacuum extraction, only the upper surface layer of the slurry can be effectively degassed each time, so a stirring paddle 2 is required to stir the slurry so that the slurry in the lower layer enters the upper surface layer for sufficient degassing.

[0033] In a preferred embodiment, the rotation speed of the stirring paddle 2 is in the range of 0-100 r / min.

[0034] Those skilled in the art will appreciate that, when the stirring paddle 2 is in a low-speed stirring state, it can turn over the slurry so that the slurry in the lower layer enters the upper surface layer for sufficient degassing treatment, and the low-speed rotation can effectively prevent the slurry from generating bubbles during the stirring process, especially when breaking the vacuum requires injecting compressed gas into the degassing tank 1. If the rotation speed of the stirring paddle 2 is too fast, it is easy to cause a large number of bubbles to be generated in the slurry.

[0035] In a preferred embodiment, the stirring paddle 2 is provided with two groups of blades, one group of blades is U-shaped, and the other group of blades is oblique blade-shaped.

[0036] Those skilled in the art can understand that the U-shaped blade has a U-shaped opening facing the top of the degassing tank 1, and the oblique-blade blade has a certain angle with the central axis of the stirring paddle 2. The setting of two groups of different blades makes the slurry more evenly stirred.

[0037] In a preferred embodiment, the pressure in the compressed gas tank 15 is 0-5 MPa.

[0038] Those skilled in the art will appreciate that when the compressed gas source 15 is capable of releasing compressed gas having a gas source pressure of 0-5 MPa, the time required for breaking the vacuum can be effectively reduced, thereby improving the efficiency of degassing.

[0039] In a preferred embodiment, the degassing tank 1 is provided with a feed pipe 10 and a discharge pipe 11 .

[0040] Those skilled in the art can understand that the slurry to be deaerated can be loaded into the deaerator through the feed pipe, and the slurry that has been deaerated can be taken out of the deaerator through the discharge pipe.

[0041] In a preferred embodiment, the vacuum source can make the pressure in the degassing tank 1 range from -60 KPa to -100 KPa.

[0042] Those skilled in the art can understand that, during the vacuuming process, theoretically, the higher the vacuum degree, the better the slurry degassing effect. However, considering the strength of the degassing tank 1, setting the range of the specified pressure P0 to -60KPa to -100KPa is the best effect.

[0043] In a preferred embodiment, the compressed gas source can make the pressure in the degassing tank 1 range from 0 KPa to 50 KPa.

[0044] Those skilled in the art can understand that, during the vacuum breaking process, the strength of the degassing tank 1 is also taken into consideration, so setting the range of the specified pressure to 0 KPa to 50 KPa is the best effect.

[0045] In the description of the specific embodiments of the present invention, unless otherwise specified, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or the orientation or position relationship of the product / equipment / device of the utility model when it is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0046] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the utility model.

[0047] In addition, the expressions “first”, “second”, “third”, etc. that appear in the terms are merely descriptions used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0048] In addition, in the description of the embodiments of the present invention, "several", "multiple" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0049] In addition, in the description of the technical solution of the utility model, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two components.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A slurry degassing device, characterized in that: The invention comprises a degassing tank (1) and a control system (6), wherein the degassing tank (1) is provided with a vacuum pipeline (7) and a vacuum breaking pipeline (4), the vacuum pipeline (7) is provided with a vacuum source, the vacuum breaking pipeline (4) is provided with a compressed gas valve (5), the vacuum breaking pipeline (4) is connected to a compressed gas source (15), and the control system (6) is connected to the compressed gas valve (5) and the vacuum valve (8).

2. A slurry degassing device according to claim 1, characterized in that: The degassing tank (1) is provided with a first pressure sensor (3), the compressed air source (15) is provided with a second pressure sensor (13), and a liquid level sensor (16) is provided above the degassing tank (1).

3. The slurry degassing device according to claim 1, characterized in that: The compressed air source (15) is connected to an air intake pipeline (17), and a filtering device is provided on the air intake pipeline (17).

4. The slurry degassing device according to claim 1, characterized in that: A stirring paddle (2) is arranged inside the degassing tank (1), and a motor (18) is arranged outside the degassing tank (1), and the motor (18) is connected to the stirring paddle (2) in a transmission manner.

5. The slurry degassing device according to claim 4, characterized in that: The rotation speed range of the stirring blade (2) is 0-100 r / min.

6. The slurry degassing device according to claim 4, characterized in that: The stirring paddle (2) is provided with two groups of blades, one group of blades is U-shaped, and the other group of blades is oblique.

7. The slurry degassing device according to claim 1, characterized in that: The pressure in the compressed air source (15) is 0-5 MPa.

8. The slurry degassing device according to claim 1, characterized in that: The degassing tank (1) is provided with a feeding pipe (10) and a discharging pipe (11).

9. The slurry degassing device according to claim 1, characterized in that: The vacuum source can make the pressure in the degassing tank (1) range from -60KPa to -100KPa.

10. The slurry degassing device according to claim 1, characterized in that: The compressed gas source can make the pressure in the degassing tank (1) range from 0 KPa to 50 KPa.

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