Defoaming device
By designing a degassing device with a scraper and a screen cylinder, the device utilizes the difference in rotational shear force to break up bubbles and form a liquid film of fixed thickness, thus solving the problems of continuous degassing and low efficiency of existing devices and achieving efficient slurry degassing and consistent coating.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN SHANGSHUI INTELLIGENT CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-26
AI Technical Summary
Existing degassing devices cannot achieve continuous degassing of slurry, and have low degassing efficiency, failing to effectively remove air bubbles from the slurry, resulting in uneven coating and abnormal porosity.
A degassing device comprising a degassing cylinder and a rotor is designed. The rotor is equipped with a scraper and a screen cylinder. The scraper is driven to rotate by a rotating shaft. The shear force difference between the screen holes and the cylinder wall is used to disrupt the surface balance of the bubbles. A liquid film of fixed thickness is formed through the gap between the scraper and the screen cylinder, thereby achieving continuous degassing and efficient shearing of the slurry.
This process enables continuous degassing of the slurry, improving degassing efficiency and effect, ensuring the consistency and quality of slurry coating, and meeting coating requirements.
Smart Images
Figure CN224404461U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of material dispersion and degassing, and in particular to a degassing device. Background Technology
[0002] During the pulping process, air bubbles in the slurry can lead to uneven coating and abnormal electrode porosity. This is especially true for silicon-carbon anode slurries, where the nano-silicon coating on the surface of the silicon-carbon anode slurry can react with water to generate hydrogen. Moreover, silicon-carbon materials have a large specific surface area, making it easy for hydrogen to be adsorbed onto the material surface.
[0003] Existing degassing devices use a vacuum static method to remove bubbles; however, this method cannot continuously degas the slurry and has low degassing efficiency.
[0004] The film formed under centrifugal force is relatively thick, the slurry viscosity is high, and the tiny air bubbles in the slurry cannot overcome the migration resistance to reach the surface and thus cannot meet the requirements of coating slurry. Utility Model Content
[0005] In view of this, one objective of this utility model is to provide a degassing device to solve the technical problem that existing degassing devices cannot continuously degas slurry and have low degassing efficiency.
[0006] This utility model provides a degassing device, including a degassing cylinder and a rotor. The degassing cylinder is provided with a degassing chamber, a feed inlet, and a discharge outlet. The degassing chamber is connected to the feed inlet and the discharge outlet. At least one screen cylinder is provided inside the degassing chamber. Each screen cylinder is provided with multiple screen holes. The rotor includes a rotating shaft and a scraper fixed to the rotating shaft. The scraper is disposed inside the innermost screen cylinder and can rotate around the central axis of the rotating shaft. The outer side wall of the scraper and the inner side wall of the innermost screen cylinder form a gap in the radial direction of the rotating shaft.
[0007] In one possible implementation, the number of screen cylinders is set to multiple, and at least some of the screen cylinders correspond to multiple screen holes with different apertures.
[0008] In one possible implementation, the apertures of the multiple screen holes in the same screen cylinder are the same, and the apertures of the multiple screen holes corresponding to the multiple screen cylinders gradually increase from the inside to the outside.
[0009] In one possible implementation, the scraper is fixedly connected to the rotating shaft; or, the scraper is movably connected to the rotating shaft in the radial and / or axial directions.
[0010] In one possible implementation, in a radial section of the rotor along the radial direction of the shaft, the tangent between the scraper and the shaft at the connection point is defined as the connecting tangent, and the line connecting the two ends of the scraper in the radial direction of the shaft is an extension line, with the extension line forming an angle between the extension line and the connecting tangent, the angle being 15°-90°.
[0011] In one possible implementation, the scraper is configured as one or more, each scraper extending radially along the axis of rotation; or, each scraper is deflected radially along the axis of rotation; or, each scraper is spirally coiled axially along the axis of rotation.
[0012] In one possible implementation, the scraper has a plurality of micro-grooves and / or a plurality of micro-protrusions on its edge facing away from the rotating shaft in the radial direction of the rotating shaft.
[0013] In one possible implementation, the height of the scraper in the axial direction of the rotating shaft is higher than the height of the topmost screen hole.
[0014] In one possible implementation, the outermost screen cylinder and the degassing cylinder together form a feeding channel, the feeding channel being located outside the outermost screen cylinder, the feed inlet being located at the bottom of the degassing cylinder and connected to the feeding channel, and the discharge outlet being located at the bottom of the degassing cylinder and connected to the inner cavity of the innermost screen cylinder.
[0015] In one possible implementation, the top of the degassing cylinder is provided with a suction port that communicates with the inner cavity of the innermost screen cylinder. The suction port is used to connect with a vacuum device. The degassing device also includes a gas detection module and a control module. The gas detection module is used to detect the gas concentration in the degassing cylinder. The control module is connected to the gas detection module and the vacuum device, and is used to control the operating parameters of the vacuum device according to the gas concentration detected by the gas detection module.
[0016] The degassing device provided by this utility model has several advantages. First, the rotating shaft can drive the scraper to rotate. The combination of the scraper and the screen cylinder causes uneven stress on the bubbles due to the different shear forces between the screen holes and the wall of the screen cylinder during the rotation of the scraper. This disrupts the surface balance of the bubbles, causing them to burst, thus improving the degassing effect of the slurry and enabling continuous degassing of the slurry. Second, the rotating shaft driving the scraper to rotate can disperse and shear the slurry in the degassing cylinder, reducing the viscosity of the slurry and promoting the release of bubbles from the slurry, thereby improving the degassing efficiency and effect of the slurry. Third, the gap formed between the outer wall of the scraper and the inner wall of the innermost screen cylinder in the radial direction of the rotating shaft ensures a liquid film of a fixed thickness, guaranteeing the consistency of slurry degassing and meeting the coating requirements of the slurry. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the degassing device provided in the first embodiment of this utility model.
[0019] Figure 2 yes Figure 1 A schematic diagram of a partial structure of the degassing device.
[0020] Figure 3 yes Figure 1 A cross-sectional view of a portion of the degassing device.
[0021] Figure 4 This is a cross-sectional view of the degassing device provided in the second embodiment of this utility model.
[0022] Figure 5 yes Figure 1 A top view of the rotor of the degassing device in the first embodiment.
[0023] Figure 6 yes Figure 1 A top view of the rotor of the degassing device in the second embodiment.
[0024] Figure 7 yes Figure 1 A cross-sectional view of a partial structure of the rotor of the degassing device in the third embodiment.
[0025] Key reference numerals: Degassing device - 100; Degassing cylinder - 10; Degassing chamber - 101; Inlet - 102; Outlet - 103; Feed channel - 105; Suction port - 106; Screen cylinder - 11; Screen hole - 1101; Rotor - 20; Gap - 201; Shaft - 21; Scraper - 22; Microgroove - 2201; Microprotrusion - 2202; Control module - 30; Vacuum equipment - 40; Gas treatment module - 50; Gas detection module - 60; Discharge pump - 70; Feed pump - 80; Liquid level detection module - 90; Dimension - D; Connecting tangent - L1; Extension line - L2; Included angle - α; Central axis - P; Axial direction - X; Radial direction - Y; Circumferential direction - Z.
[0026] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation
[0027] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0028] It is understood that the terminology in the specification, claims, and accompanying drawings of this utility model is for describing specific embodiments only and is not intended to limit the utility model. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Unless the context clearly states otherwise, the singular forms "a" and "described" are also intended to include the plural forms. The term "comprising," and any variations thereof, are intended to cover non-exclusive inclusion. Furthermore, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosure of this utility model, wherein terms indicating direction such as up, down, left, and right refer only to the position of the illustrated structure in the corresponding drawings. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set on" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] The following description describes preferred embodiments of the present invention; however, the foregoing description is intended to illustrate the general principles of the present invention and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined by the appended claims.
[0030] The term "slurry" refers to a stable suspension formed by mixing and dispersing powder and liquid materials. Powder refers to slurry in powder form, while liquid refers to slurry in liquid form.
[0031] The term "dispersion" refers to the process by which particle agglomerates in a slurry are fully broken up to form a stable solid-liquid suspension system.
[0032] The term "mesh" is a unit of measurement that refers to the number of openings per inch of a sieve screen; it can also be understood as the size of the sieve openings in a standard sieve. A higher mesh number indicates more openings and smaller particle sizes.
[0033] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the degassing device 100 provided in the first embodiment of this utility model; Figure 2 yes Figure 1 A schematic diagram of a partial structure of the degassing device 100 in the diagram; Figure 3 yes Figure 1 A cross-sectional view of a partial structure of the degassing device 100. The degassing device 100 includes a degassing cylinder 10 and a rotor 20. The degassing cylinder 10 is provided with a degassing chamber 101, a feed inlet 102, and a discharge outlet 103. The degassing chamber 101 is connected to the feed inlet 102 and the discharge outlet 103. At least one screen cylinder 11 is provided inside the degassing chamber 101. Each screen cylinder 11 is provided with a plurality of screen holes 1101. The rotor 20 includes a rotating shaft 21 and a scraper 22 fixed to the rotating shaft 21. The scraper 22 is disposed inside the innermost screen cylinder 11 and can rotate about the central axis P of the rotating shaft 21. The outer side wall of the scraper 22 and the inner side wall of the innermost screen cylinder 11 form a gap 201 in the radial direction Y of the rotating shaft 21.
[0034] The degassing device 100 provided by this utility model has several advantages. First, the rotating shaft 21 can drive the scraper 22 to rotate. The combination of the scraper 22 and the screen cylinder 11 results in uneven force on the bubbles due to the different shear forces between the screen holes 1101 and the cylinder wall of the screen cylinder 11 during the rotation of the scraper 22. This disrupts the balance of the bubble surface and causes the bubbles to rupture, thereby improving the degassing effect of the slurry and enabling the continuous operation of the slurry degassing process. Second, the rotation of the scraper 22 driven by the rotating shaft 21 can disperse and shear the slurry in the degassing cylinder 10, reducing the viscosity of the slurry and promoting the release of bubbles from the slurry, thereby improving the degassing efficiency and effect of the slurry. Third, the gap 201 formed between the outer wall of the scraper 22 and the inner wall of the innermost screen cylinder 11 in the radial direction Y of the rotating shaft 21 is used to obtain a liquid film of fixed thickness, ensuring the consistency of slurry degassing and meeting the coating requirements of the slurry.
[0035] The dimension D of the gap 201 in the radial direction Y of the degassing cylinder 10 is 1mm-10mm. Thus, on the one hand, by controlling the dimension D of the gap 201 between the outer wall and the inner wall of the degassing cylinder 10 in the radial direction Y of the degassing cylinder 10 to be within the preset dimension D range, the degassing device 100 can produce a film of fixed thickness to meet the coating requirements of the slurry.
[0036] Understandably, when the dimension D of the gap 201 in the radial direction Y is too small, the flow space of the slurry at dimension D of the gap 201 is limited, resulting in excessive shear force. This may lead to excessive particle breakage or agglomeration, affecting the dispersion stability of the slurry and easily clogging the deaerator 10, reducing production efficiency and increasing equipment wear. When the dimension D of the gap 201 in the radial direction Y is too large, the shear force is insufficient, resulting in uneven particle dispersion in the slurry. This leads to the appearance of large particles or agglomerates in the slurry, affecting the subsequent coating quality and reducing the slurry flow rate and dispersion efficiency. Therefore, by controlling the dimension D of the gap 201 in the radial direction Y to be 1mm-10mm, the deaerator 100 can effectively shear and disperse the slurry, improving the uniformity of the slurry flow rate, ensuring the consistency of the slurry, and meeting the coating requirements. For example, the dimension D of the gap 201 in the radial direction Y can be, but is not limited to, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm. It should be noted that the dimension D of the gap 201 in the radial direction Y can be set according to factors such as the type of slurry, the material of the deaerator 10, and the material of the deaerator 10. This embodiment of the utility model does not impose specific limitations.
[0037] For the sake of accuracy, all references to direction in this article should be expressed in terms of direction. Figure 3For reference, the rotating shaft 21 has a central axis P. The term "axial direction X" refers to the direction parallel to the central axis P of the rotating shaft 21, where the X-axis is the left-right direction (with the positive X-axis being right). The term "radial direction Y" refers to the direction perpendicular to the central axis P of the rotating shaft 21, that is, along the radial direction of the cross-section of the rotating shaft 21, where the Y-axis is the up-down direction (with the positive Y-axis being up). The term "circumferential direction Z" refers to the circumferential direction of the rotating shaft 21, that is, the direction surrounding the central axis P of the rotating shaft 21. The axial direction X, radial direction Y, and circumferential direction Z together constitute the three orthogonal directions of the rotating shaft 21. For ease of description, the up-down, left-right, and front-back orientations in this utility model are relative positions and do not constitute a limitation. The axial direction X, radial direction Y, and circumferential direction Z of the rotating shaft 21 can be customized according to the specific structure of the product and the perspective presented in the accompanying drawings; this utility model does not impose specific limitations. The axial direction X of the degassing cylinder 10 is parallel to the axial direction X of the rotating shaft 21, the radial direction Y of the degassing cylinder 10 is parallel to the radial direction Y of the rotating shaft 21, and the circumferential direction Z of the degassing cylinder 10 is parallel to the circumferential direction Z of the rotating shaft 21.
[0038] The degassing device 100 is used to disperse the slurry. The slurry can be a battery material. Battery materials include a variety of materials, such as, but not limited to, positive electrode materials, negative electrode materials, conductive agents, etc. In this embodiment, the slurry is illustrated as a battery material; it is understood that the slurry can also be other materials, such as food materials, pharmaceutical materials, fertilizer materials, building materials, etc., and the type of slurry is not limited here. The refrigerant can be, but is not limited to, at least one of water, gas, oil, etc.
[0039] It should be noted that, Figure 1 The purpose is only to schematically describe the arrangement between the degassing cylinder 10 and the rotor 20, and not to make specific limitations on the connection position, connection relationship and specific structure of each component. Figure 1 The diagram only illustrates the structure of the degassing device 100 in this embodiment and does not constitute a specific limitation on the degassing device 100. In other embodiments of this invention, the degassing device 100 may include more or fewer components than shown in the diagram, or combine certain components, or use different components. For example, the degassing device 100 may also include, but is not limited to, a temperature detector and a drive mechanism. Specifically, the temperature detector is used to detect the temperature of the slurry inside the degassing cylinder 10. The drive mechanism is used to drive the rotor 20 to rotate.
[0040] In this embodiment, the number of screen cylinders 11 is set to one. The screen cylinder 11 has multiple screen holes 1101 with the same aperture, thereby reducing the processing difficulty of the screen cylinder 11 and improving the consistency of the slurry. This allows the degassing device 100 to effectively shear and disperse the slurry, improving the uniformity of the slurry flow rate and meeting the coating requirements. Of course, in some embodiments, the apertures of the multiple screen holes 1101 in the screen cylinder 11 can be different, and this embodiment of the present invention does not impose specific limitations. For example, the apertures of the multiple screen holes 1101 in the screen cylinder 11 can be gradually varied in the axial direction X of the rotating shaft 21.
[0041] Exemplarily, in this embodiment, the screen cylinder 11 and the deaeration cylinder 10 can be configured as an integral structure. The screen cylinder 11 and the deaeration cylinder 10 can be formed into an integral structure by bonding or integral injection molding. In some embodiments, the screen cylinder 11 and the deaeration cylinder 10 can also be configured as separate structures. Specifically, the screen cylinder 11 and the deaeration cylinder 10 are independently arranged and fixedly connected. The screen cylinder 11 and the deaeration cylinder 10 can be detachably fixedly connected together by means of mounting structure, snap-fit structure, etc. The connection method of the screen cylinder 11 and the deaeration cylinder 10 is not specifically limited in this utility model.
[0042] In this embodiment, the screen aperture 1101 is elongated. In some embodiments, the screen aperture 1101 may be circular, elliptical, racetrack-shaped, square, polygonal, etc. It should be noted that the screen aperture 1101 refers to the structure that penetrates the outer and inner walls of the screen cylinder 11 in the radial direction Y of the degassing cylinder 10. The shape of the screen aperture 1101 can be set according to factors such as the type of slurry and the specifications of the screen cylinder 11. This embodiment of the present invention does not impose specific limitations. It can be understood that the screen aperture 1101 can serve as a shearing channel connecting the size D of the gap 201 and the inner cavity of the screen cylinder 11, so that the slurry undergoes shearing and dispersion under the action of centrifugal force of the degassing cylinder 10, thereby improving the dispersion effect of the slurry, improving the quality of the slurry, and meeting the coating requirements of the slurry.
[0043] Please refer to the following: Figure 3 and Figure 4 , Figure 4 This is a cross-sectional view of the defoaming device 100 provided in the second embodiment of this utility model. In the second embodiment, the number of screen cylinders 11 is set to multiple. At least some of the screen cylinders 11 correspond to multiple screen holes 1101 with different apertures. Thus, defoaming holes with different apertures can remove bubbles of different sizes, improving the defoaming efficiency and defoaming effect of the slurry.
[0044] In some embodiments, the apertures of multiple screen holes 1101 in the same screen cylinder 11 are the same, and the apertures of the multiple screen holes 1101 corresponding to the multiple screen cylinders 11 gradually increase from the inside to the outside. Thus, on the one hand, the slurry first contacts the outer screen cylinder 11 with a large aperture, which can quickly break or intercept larger bubbles, reducing the load on the inner screen cylinder 11. As the slurry flows inward, the bubbles are broken down step by step, and the inner screen cylinder 11 with a small aperture can effectively intercept tiny bubbles, improving the defoaming accuracy. On the other hand, when the slurry flows from the outside to the inside, the fluid shear force can promote the discharge of impurities, reducing the risk of clogging of the screen holes 1101. Furthermore, as the slurry flows from the large holes to the small holes, the flow rate gradually decreases, avoiding a sudden increase in pressure (compared to directly passing through a small-hole screen), reducing energy consumption and the impact on the defoaming device 100. Moreover, the graded buffering of the multiple screen cylinders 11 prevents secondary bubble generation caused by slurry turbulence.
[0045] In this embodiment, the scraper 22 is fixedly connected to the rotating shaft 21, thereby improving the reliability and stability of the connection between the scraper 22 and the rotating shaft 21, and avoiding the problem of slurry entering the connection gap between the scraper 22 and the rotating shaft 21 and wearing the rotating shaft 21, thus extending the service life of the rotating shaft 21.
[0046] In some embodiments, the scraper 22 is movably connected to the rotating shaft 21 in the radial direction Y. Thus, by controlling the extension and retraction of the scraper 22 relative to the rotating shaft 21, the size D of the gap 201 between the scraper 22 and the screen cylinder 11 can be adjusted, thereby enabling the dispersion device to produce a liquid film of the target thickness, meeting the degassing and coating requirements of different slurries, and improving the flexibility of the degassing device 100.
[0047] In some embodiments, the scraper 22 is movably connected to the rotating shaft 21 along the axial direction X. Thus, on the one hand, during the degassing process, the slurry level may fluctuate due to changes in rotation speed, viscosity, or feed rate; the axially movable scraper 22 can automatically adjust its position to maintain optimal contact with the liquid surface, avoiding empty scraping or excessive compression. On the other hand, the movable scraper 22 can move slightly axially during rotation, preventing the slurry from solidifying and accumulating between the scraper 22 and the cylinder wall, and enabling the scraper 22 to adapt to different liquid levels in the degassing cylinder 10, thereby improving degassing efficiency and effect. Of course, in other embodiments, the scraper 22 is movably connected to the rotating shaft 21 along the radial direction Y, and the scraper 22 is movably connected to the rotating shaft 21 along the radial direction Y.
[0048] Please refer to the following: Figure 3 , Figure 5 and Figure 6 , Figure 5 yes Figure 1 A top view of the rotor 20 of the degassing device 100 in a first embodiment; Figure 6 yes Figure 1 This is a top view of the rotor 20 of the degassing device 100 in a second embodiment. In the radial section of the rotor 20 along the radial direction Y of the shaft 21, the tangent line between the scraper 22 and the shaft 21 at the connection point is defined as the connecting tangent line L1. The line connecting the two ends of the scraper 22 in the radial direction Y of the shaft 21 is an extension line L2, and an angle α is formed between the extension line L2 and the connecting tangent line L1. The angle α is between 15° and 90°. The angle α can be, but is not limited to, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 60°, 65°, 70°, or 90°. It should be noted that the angle α is only for illustrative purposes, and the angle α can also be set according to factors such as the type of adhesive and the material of the scraper 22. This embodiment of the invention does not impose specific limitations.
[0049] In some embodiments, the included angle α is 15°-60°. Understandably, when the included angle α is too large, it is not conducive to pushing the slurry towards the outlet 103; when the included angle α is too small, it reduces the connection strength between the scraper 22 and the rotating shaft 21, and also reduces the accuracy of the liquid film thickness. Therefore, based on setting the included angle α within a preset range, when the scraper 22 rotates with the rotating shaft 21, the scraper 22 can push the slurry towards the outlet 103, thereby improving the discharge effect of the degassing device 100, promoting the removal of air bubbles from the slurry, and improving the accuracy of the liquid film thickness.
[0050] like Figure 5 As shown, in the first embodiment, the included angle α is 90°, which facilitates the alignment and assembly of the baffle and the rotating shaft 21, reduces the risk of slurry entering the connection gap between the baffle and the rotating shaft 21, and extends the service life of the rotor 20. In other words, the scraper 22 extends along the radial direction Y of the rotating shaft 21. Figure 6 As shown, in the first embodiment, the included angle α is 30°. In other words, the scraper 22 is deflected in the radial direction Y relative to the rotating shaft 21. As a result, when the scraper 22 rotates with the rotating shaft 21, the scraper 22 can push the slurry towards the discharge port 103, thereby improving the discharge effect of the degassing device 100, promoting the removal of air bubbles in the slurry, and improving the accuracy of the liquid film thickness.
[0051] Scraper 22 can be configured as one or more. For example... Figure 5 As shown, in the first embodiment, each scraper 22 extends in the radial direction Y along the shaft 21. Figure 6As shown, in the second embodiment, each scraper 22 is deflected along the radial direction Y of the shaft 21. Of course, in the third embodiment, each scraper 22 is spirally wound along the axial direction X of the shaft 21. Therefore, on the one hand, when the scraper 22 is configured as a radially extending straight plate, the processing difficulty of the scraper 22 and the assembly difficulty with the rotor 20 are reduced, and the movement path of the scraper 22 is short, thus reducing energy consumption. On the other hand, when multiple scrapers 22 are arranged in a spiral shape along the circumferential direction Z of the rotating shaft 21, the scraper 22 can continuously push the material to move along the axial direction X of the rotating shaft 21, reducing the accumulation of slurry particles, reducing the viscosity of the slurry, preventing the screen cylinder 11 from being blocked, simplifying the structure and reducing processing difficulty. Furthermore, when the scraper 22 is spirally coiled along the axial direction X of the rotating shaft 21, the scraper 22 can continuously push the material to move along the axial direction X of the rotating shaft 21, reducing the accumulation of slurry particles, reducing the viscosity of the slurry, preventing the screen cylinder 11 from being blocked, and the movement trajectory of the spiral scraper 22 is a continuous spiral line, which can evenly scrape the screen cylinder 11, reducing local wear and extending the service life of the screen.
[0052] Please refer to the following: Figure 3 and Figure 7 , Figure 7 yes Figure 1 The image shows a partial cross-sectional view of the rotor 20 of the degassing device 100 in a third embodiment. In some embodiments, the scraper 22 has a plurality of micro-grooves 2201 and / or a plurality of micro-protrusions 2202 on its edge facing away from the rotating shaft 21 in the radial direction Y. As a result, during rotation, the scraper 22 experiences uneven stress on the bubbles due to the different shear forces between the scraper 22 body and the positions of the micro-grooves 2201 and micro-protrusions 2202, thereby disrupting the surface balance of the bubbles and causing them to rupture, thus improving the degassing effect of the slurry. The shapes of the micro-grooves 2201 and the micro-protrusions 2202 can each be at least one of hemispherical, serrated, wavy, etc.
[0053] In some embodiments, the height of the scraper 22 in the axial direction X of the rotating shaft 21 is higher than the height of the topmost screen hole 1101. Therefore, the scraper 22 can scrape off the liquid film adhering to the screen cylinder 11, preventing the slurry from sticking together on the cylinder wall of the screen cylinder 11 due to centrifugal force or adhesion, ensuring that all slurry participates in mixing, dispersion, and degassing processes, thus improving discharge efficiency. Of course, in some embodiments, the height of the scraper 22 in the axial direction X of the rotating shaft 21 may also be equal to or slightly lower than the height of the topmost screen hole 1101; this embodiment of the present invention does not impose specific limitations.
[0054] Please refer to it again. Figure 3In some embodiments, the outermost screen cylinder 11 and the degassing cylinder 10 together form a feed channel 105. The feed channel 105 is located outside the outermost screen cylinder. The feed inlet 102 is located at the bottom of the degassing cylinder 10 and is connected to the feed channel 105. The discharge outlet 103 is located at the bottom of the degassing cylinder 10 and is connected to the inner cavity of the innermost screen cylinder 11. Thus, on the one hand, all the slurry flowing into the feed inlet 102 must pass through the screen cylinder 11 before flowing to the discharge outlet 103, thereby avoiding the problem of slurry bubbles being discharged directly through the discharge outlet 103 without being fully broken, and improving the degassing effect of the slurry; on the other hand, the discharge outlet 103 is located at the bottom of the degassing cylinder 10, so that the slurry flows towards the discharge outlet 103 under the action of gravity, thereby improving the discharge efficiency and discharge effect, and reducing the amount of slurry remaining in the degassing chamber 101.
[0055] In some embodiments, the bottom wall of the degassing cylinder 10 is inclined from the innermost screen cylinder 11 toward the discharge port 103, so that the slurry flows toward the discharge port 103 under the action of gravity, thereby improving the discharge efficiency and discharge effect and reducing the amount of slurry remaining in the degassing chamber 101.
[0056] Please refer to it again. Figure 1 and Figure 3 In some embodiments, the top of the defoaming cylinder 10 is provided with a suction port 106 that communicates with the inner cavity of the innermost screen cylinder 11. The suction port 106 is used to communicate with the vacuum device 40. Thus, the suction port 106 at the top of the defoaming cylinder, which communicates with the vacuum device 40, serves several purposes. First, since bubbles naturally migrate upwards in the slurry due to buoyancy, the vacuum device 40 can directly capture the floating bubbles, reducing the escape path of the bubbles and improving the defoaming efficiency. Second, the vacuum suction at the top of the vacuum device 40 creates a uniform negative pressure environment inside the defoaming cylinder, avoiding the problem of uneven slurry turbulence caused by local low pressure. Furthermore, by cooperating with the scraper 22, the thickness of the liquid mold structure can be controlled within the target range, improving the compactness of the slurry and meeting the coating requirements. Third, the vacuum suction at the top of the vacuum device 40 ensures that after the bubbles move towards the inner wall of the defoaming cylinder under the centrifugal force, they can still converge upwards to the suction port 106.
[0057] In this embodiment, the suction port 106 is located near the rotating shaft 21, thereby shortening the path of gas flow from the degassing chamber 101 to the suction port 106 and improving the exhaust effect. Of course, in some embodiments, the suction port 106 can also be located at other positions on the degassing cylinder 10 away from the rotating shaft 21; this embodiment of the present invention does not impose specific limitations. The suction port 106 can be located on the top wall of the degassing cylinder 10 in the axial direction X. Specifically, the suction port 106 is located in the area corresponding to the innermost screen cylinder 11 of the degassing cylinder 10, thereby facilitating the smooth flow of gas from the degassing chamber 101 to the suction port 106, reducing air resistance, and promoting exhaust.
[0058] In some embodiments, the degassing device 100 further includes a gas treatment module 50. The gas treatment module 50 is connected to the suction port 106. This reduces the risk of air bubbles being generated in the slurry during the slurry preparation process, thereby improving the slurry density and meeting the coating requirements of the slurry.
[0059] The gas processing module 50 is configured as a hydrogen combustion module; or, it is configured as a hydrogen collection module. Thus, hydrogen and oxygen can be converted into water vapor after combustion; or specific gases within the degassing chamber 101 can be collected and separated, thereby reducing the risk of bubble formation during slurry preparation and improving slurry density to meet coating requirements.
[0060] In some embodiments, the degassing device 100 further includes a gas detection module 60 and a control module 30. The gas detection module 60 is used to detect the gas concentration inside the degassing cylinder 10, and the control module 30 is connected to the gas detection module 60 and the vacuum device 40, and is used to control the operating parameters of the vacuum device 40 according to the gas concentration detected by the gas detection module. Thus, the degassing device 100 can efficiently break up and directionally discharge millimeter-level bubbles based on the gas generation characteristics of silicon-carbon anode slurry, improving the degassing efficiency and effect of the slurry, as well as increasing the slurry density, and meeting the coating requirements of the slurry.
[0061] In some embodiments, the degassing device 100 further includes a discharge pump 70, a liquid level detection module 90, and a control module 30. The discharge pump 70 is connected to the discharge port 103. The liquid level detection module 90 is installed inside the degassing cylinder 10 and is used to detect the liquid level height of the slurry inside the degassing cylinder 10. The control module 30 is connected to the discharge pump 70 and the liquid level detection module 90 and is used to control the operating parameters of the discharge pump 70 according to the liquid level height. Specifically, the liquid level detection module 90 is also used to detect whether the liquid level height of the slurry inside the degassing cylinder 10 has reached a preset height. The control module 30 is also electrically connected to the liquid level detection module 90 and is used to control the discharge pump 70 to start working after the liquid level height of the slurry inside the degassing cylinder 10 detected by the liquid level detection module 90 reaches the preset height. Therefore, on the one hand, based on the fact that the liquid level of the slurry in the degassing cylinder 10 detected by the liquid level detection module 90 reaches the preset height, the discharge pump 70 is controlled to start working, which saves the energy consumption of the discharge pump 70, avoids the problem of the discharge pump 70 running dry, and extends the service life of the discharge pump 70.
[0062] For example, in this embodiment, the liquid level detection module 90 is installed on the top wall of the deaeration tank 10. Therefore, by installing the liquid level detection module 90 on the top of the deaeration tank 10, the risk of contamination of the liquid level detection module 90 by the slurry is reduced, and the detection accuracy of the liquid level detection module 90 is improved. Of course, in some embodiments, the liquid level detection module 90 may also be installed on the bottom wall or side wall of the deaeration tank 10.
[0063] The liquid level detection module 90 can be configured as a contact detector or a non-contact detector. The liquid level detection module 90 can be, but is not limited to, a float-type liquid level gauge, a hydrostatic liquid level gauge, a capacitive liquid level gauge, an ultrasonic liquid level gauge, or an electrode-type liquid level switch, etc.
[0064] In some embodiments, the degassing device 100 further includes a feed pump 80. The feed pump 80 is connected to the feed inlet 102. The control module 30 is used to determine the degassing time of the degassing device 100 based on the flow rates of the feed pump 80 and / or the discharge pump 70. Thus, by controlling the degassing time through the linkage of the feed pump 80 and the discharge pump 70, the degassing efficiency and degassing effect of the degassing device 100 are improved.
[0065] The degassing device 100 operates as follows: Slurry flows from the inlet 102 into the degassing chamber 101 according to the pre-set flow rate of the feed pump 80. The vacuum device 40 is activated, and the rotating shaft 21 is driven to rotate according to a pre-set value. At this time, under centrifugal force, a liquid film structure forms at dimension D in the gap 201 between the outer wall of the scraper 22 facing away from the rotating shaft 21 and the inner wall of the screen cylinder 11. The slurry undergoes degassing and shearing operations under the action of the screen holes 1101 in the degassing cylinder 10. After the slurry level reaches a preset height, the control module 30 controls the start of the discharge pump 70 and determines the degassing time of the degassing device 100 based on the flow rates of the feed pump 80 and / or the discharge pump 70, thereby enabling intelligent degassing operation of the degassing device 100 and continuous degassing of the slurry. The control module 30 is also used to control the working parameters of the gas detection module 60 when the gas concentration detected by the gas detection module reaches the preset gas concentration, so as to realize the timely exhaust of gas in the degassing chamber 101, reduce the impact of bubbles on the liquid film structure, and meet the coating requirements of the slurry.
[0066] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A degassing device (100), characterized in that, include: A degassing cylinder (10) is provided with a degassing chamber (101), a feed inlet (102) and a discharge outlet (103). The degassing chamber (101) is connected to the feed inlet (102) and the discharge outlet (103). At least one screen cylinder (11) is provided in the degassing chamber (101), and each screen cylinder (11) is provided with multiple screen holes (1101). The rotor (20) includes a rotating shaft (21) and a scraper (22) fixed on the rotating shaft (21). The scraper (22) is disposed in the innermost screen cylinder (11) and can rotate around the central axis (P) of the rotating shaft (21). The outer wall of the scraper (22) and the inner wall of the innermost screen cylinder (11) form a gap (201) in the radial direction (Y) of the rotating shaft (21).
2. The degassing device (100) as described in claim 1, characterized in that, The number of screen cylinders (11) is set to multiple, and at least some of the screen cylinders (11) have different apertures for the multiple screen holes (1101).
3. The degassing device (100) as described in claim 2, characterized in that, The aperture of multiple screen holes (1101) in the same screen cylinder (11) is the same, and the aperture of multiple screen holes (1101) corresponding to multiple screen cylinders (11) gradually increases from the inside to the outside.
4. The degassing device (100) as described in claim 1, characterized in that, The scraper (22) is fixedly connected to the rotating shaft (21); or, the scraper (22) is movably connected to the rotating shaft (21) in the radial direction (Y) and / or axial direction (X).
5. The degassing device (100) as described in claim 1, characterized in that, In the radial section of the rotor (20) along the radial direction (Y) of the shaft (21), the tangent of the scraper (22) and the shaft (21) at the connection is defined as the connecting tangent (L1), and the line connecting the two ends of the scraper (22) in the radial direction (Y) of the shaft (21) is the extension line (L2). The extension line (L2) and the connecting tangent (L1) form an angle (α), which is 15°-90°.
6. The degassing device (100) as described in claim 1, characterized in that, The scraper (22) is configured as one or more, each scraper (22) extending in the radial direction (Y) of the rotating shaft (21); or, each scraper (22) is deflected in the radial direction (Y) of the rotating shaft (21); or, each scraper (22) is spirally coiled in the axial direction (X) of the rotating shaft (21).
7. The degassing device (100) as described in claim 2, characterized in that, The scraper (22) has a plurality of micro-grooves (2201) and / or a plurality of micro-protrusions (2202) on the edge opposite to the rotating shaft (21) in the radial direction (Y).
8. The degassing device (100) as described in claim 2, characterized in that, The height of the scraper (22) in the axial direction (X) of the rotating shaft (21) is higher than the height of the topmost screen hole (1101).
9. The degassing device (100) as described in claim 1, characterized in that, The outermost screen cylinder (11) and the degassing cylinder (10) together form a feeding channel (105). The feeding channel (105) is located outside the outermost screen cylinder. The feed inlet (102) is located at the bottom of the degassing cylinder (10) and is connected to the feeding channel (105). The discharge outlet (103) is located at the bottom of the degassing cylinder (10) and is connected to the inner cavity of the innermost screen cylinder (11).
10. The degassing device (100) as described in claim 9, characterized in that, The top of the degassing cylinder (10) is provided with a suction port (106) that communicates with the inner cavity of the innermost screen cylinder (11). The suction port (106) is used to communicate with the vacuum device (40). The degassing device (100) also includes a gas detection module (60) and a control module (30). The gas detection module (60) is used to detect the gas concentration in the degassing cylinder (10). The control module (30) is connected to the gas detection module (60) and the vacuum device (40) and is used to control the operating parameters of the vacuum device (40) according to the gas concentration detected by the gas detection module.