Dry mixing tank

Abstract

This application relates to a dry mixing tank. The dry mixing tank includes a tank body, a cover plate, a mixing mechanism, a first sealing element, and a second sealing element. The tank body has an opening; the cover plate movably covers the opening; the mixing mechanism includes a mixing shaft and a mixing paddle, the mixing shaft is rotatably mounted on the cover plate, and the mixing paddle is connected to the mixing shaft and located inside the tank body; when the cover plate covers the opening, the first sealing element is sealingly connected to both the tank body and the cover plate; the second sealing element surrounds the first sealing element, and when the cover plate covers the opening, the second sealing element is sealingly connected to both the tank body and the cover plate. The solution provided by this application can improve sealing performance, prevent material leakage, and avoid axial disturbance caused by high-speed rotation.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to dry mixing tanks. Background Technology

[0002] In industrial production such as powder processing and lithium battery material preparation, dry high-speed mixers are widely used as key equipment in the mixing and granulation processes of various granular or powdery materials. Traditional high-speed mixers often use a single-layer sealing structure between the tank and the lid, such as O-rings or simple compression gaskets.

[0003] In related technologies, when the material being stirred is an ultrafine powder or a highly viscous component, a single-layer sealing structure is prone to poor sealing, leading to powder leakage. Furthermore, a single-layer sealing structure is difficult to withstand the axial disturbances and vacuum pressure fluctuations caused by the high pressure and high-speed rotation generated during stirring. It is also difficult for a single-layer sealing structure to achieve vacuum material extraction and docking after stirring, thus limiting the development of continuous and closed production processes. Utility Model Content

[0004] To address or partially address the problems existing in related technologies, this application provides a dry mixing tank that can improve sealing performance, prevent material leakage, and avoid axial disturbance caused by high-speed rotation.

[0005] This application provides a dry mixing tank, which includes a tank body, a cover plate, a mixing mechanism, a first sealing element, and a second sealing element. The tank body has an opening. The cover plate is movably closed over the opening. The mixing mechanism includes a mixing shaft and a mixing paddle. The mixing shaft is rotatably mounted on the cover plate, and the mixing paddle is connected to the mixing shaft and is located inside the tank body. When the cover plate is closed over the opening, the first sealing element is sealed to both the tank body and the cover plate. The second sealing element surrounds the first sealing element, and when the cover plate is closed over the opening, the second sealing element is sealed to both the tank body and the cover plate.

[0006] Furthermore, the cover plate has a guide ring on the side facing the tank, and the first sealing element is sleeved on the guide ring.

[0007] Furthermore, the guide ring has a first inclined surface on the side facing away from the stirring shaft. The first inclined surface is gradually inclined towards the stirring shaft from the end near the cover plate to the end away from the cover plate. The tank body has a second inclined surface on the side facing the guide ring. The second inclined surface is facing the first inclined surface and is parallel to the first inclined surface.

[0008] Furthermore, the first sealing element includes a first sealing ring, which is sleeved outside the guide ring, and the end edge of the first sealing ring abuts against the tank body. The first sealing ring is a VD type rubber sealing ring.

[0009] Furthermore, the first sealing element also includes a sealing ring pressure ring, which is sleeved around the first sealing ring.

[0010] Furthermore, the first seal also includes a second sealing ring, which is fitted over the guide ring and sandwiched between the first sealing ring and the cover plate.

[0011] Furthermore, the second sealing element includes a third sealing ring, which is fitted onto the tank, and the third sealing ring is a VD type rubber sealing ring.

[0012] Furthermore, the second seal also includes a fourth sealing ring, which abuts against the cover plate and the third sealing ring respectively.

[0013] Furthermore, the dry mixing tank also includes a base, the tank body is mounted on the base, and the second sealing element also includes a sealing gasket, the sealing gasket surrounds the third sealing ring, and the opposite sides of the sealing gasket abut against the base and the fourth sealing ring respectively.

[0014] Furthermore, the tank body has an annular mounting groove with the opening facing away from the stirring shaft, and the third sealing ring is embedded in the mounting groove.

[0015] The technical solution provided in this application may include the following beneficial results: a first sealing element is used to seal the tank and the cover plate respectively, and a second sealing element is used to seal the tank and the cover plate respectively, thereby providing a double seal for the gap between the tank and the cover plate. This prevents material from leaking out of the gap between the tank and the cover plate when the agitator rotates at high speed, ensuring a stable sealing effect even under high-speed, vacuum, and high-pressure environments. This significantly improves sealing performance, reduces material leakage and contamination, effectively prevents ultrafine dust from overflowing, ensures a clean production workshop, extends equipment service life, and is compatible with continuous, closed-loop intelligent process flows, providing a hardware foundation for dust-free, efficient, and intelligent material manufacturing processes.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0018] Figure 1 This is a schematic diagram of the dry mixing tank shown in the embodiments of this application; Figure 2 This is a cross-sectional view of a dry mixing tank shown in an embodiment of this application; Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0019] Reference numerals: Tank body 1; Opening 11; Second inclined surface 12; Cover plate 2; Guide ring 21; First inclined surface 22; Stirring mechanism 3; Stirring shaft 31; Stirring paddle 32; First seal 4; First sealing ring 41; Sealing ring pressure ring 42; Second sealing ring 43; Second seal 5; Third sealing ring 51; Fourth sealing ring 52; Base 6. Detailed Implementation

[0020] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0021] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In related technologies, when the material being stirred is an ultrafine powder or a highly viscous component, a single-layer sealing structure is prone to poor sealing, leading to powder leakage. Furthermore, a single-layer sealing structure is difficult to withstand the axial disturbances and vacuum pressure fluctuations caused by the high pressure and high-speed rotation generated during stirring. It is also difficult for a single-layer sealing structure to achieve vacuum material extraction and docking after stirring, thus limiting the development of continuous and closed production processes.

[0025] To address the aforementioned issues, this application provides a dry mixing tank that improves sealing performance, prevents material leakage, and avoids axial disturbances caused by high-speed rotation.

[0026] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0027] See Figure 1-3 The dry mixing tank includes a tank body 1, a cover plate 2, a mixing mechanism 3, a first seal 4, and a second seal 5. The tank body 1 has an opening 11 through which the material to be mixed is fed into the tank body 1, and the mixed material is discharged from the tank body 1 through the opening 11. The cover plate 2 is movably positioned over the opening 11; it can be either attached to or removed from the opening 11. The mixing mechanism 3 includes a mixing shaft 31 and a mixing paddle 32. The mixing shaft 31 is mounted on the cover plate 2 and can rotate relative to the cover plate 2. The mixing shaft 31 is driven to rotate by a drive mechanism, which can be mounted on the cover plate 2 as part of the dry mixing tank or is an external device. The mixing paddle 32 is connected to the mixing shaft 31 and is located inside the tank body 1. The mixing paddle 32 is used to mix the material to be mixed inside the tank body 1. The second sealing element 5 surrounds the first sealing element 4. When the cover plate 2 covers the opening 11, the first sealing element 4 is sealed to the tank body 1 and the cover plate 2 respectively, and the second sealing element 5 is sealed to the tank body 1 and the cover plate 2 respectively.

[0028] This application uses a first sealing element 4 to seal and connect to both the tank body 1 and the cover plate 2, and a second sealing element 5 to seal and connect to both the tank body 1 and the cover plate 2, thus providing a double seal to the gap between the tank body 1 and the cover plate 2. This prevents material from leaking out of the gap between the tank body 1 and the cover plate 2 when the stirring paddle 32 rotates at high speed, ensuring a stable sealing effect even under high-speed, vacuum, and high-pressure environments. This significantly improves sealing performance, reduces material leakage and contamination, effectively prevents ultrafine dust from escaping, ensures a clean production workshop, extends equipment lifespan, and is compatible with continuous, closed-loop intelligent processes, providing a hardware foundation for dust-free, efficient, and intelligent material manufacturing processes. (See also...) Figure 2-3 The first sealing element 4 can be located outside the opening 11, or it can be located inside the opening 11 and attached to the inner wall of the tank body 1. The first sealing element 4 is sandwiched between the tank body 1 and the cover plate 2, and it is sleeved on the cover plate 2 or the tank body 1. Preferably, the first sealing element 4 is sleeved on the side of the cover plate 2 closest to the tank body 1. In some embodiments, the tank body 1 applies radial pressure to the first sealing element 4 along the stirring shaft 31, and the cover plate 2 applies radial pressure to the first sealing element 4 along the stirring shaft 31. The first sealing element 4 is deformed by compression, thereby sealing the gap between the cover plate 2 and the tank body 1 and preventing material from flying out of the tank body 1 from the gap between the cover plate 2 and the tank body 1.

[0029] See Figure 2-3 The second sealing element 5 is sandwiched between the tank body 1 and the cover plate 2. In some embodiments, the two ends of the second sealing element 5 in the axial direction of the stirring shaft 31 are connected to the tank body 1 and the cover plate 2, respectively. The tank body 1 applies pressure to the second sealing element 5 along the axial direction of the stirring shaft 31, and the cover plate 2 applies pressure to the second sealing element 5 along the axial direction of the stirring shaft 31. The second sealing element 5 is deformed by compression, thereby sealing the gap between the cover plate 2 and the tank body 1, preventing material from flying out of the tank body 1 from the gap between the cover plate 2 and the tank body 1. By using the first sealing element 4 and the second sealing element 5 to double seal the gap between the tank body 1 and the cover plate 2, material leakage from the gap is prevented when the stirring paddle 32 rotates at high speed, ensuring a stable sealing effect even under high-speed, vacuum, and high-pressure environments, and significantly improving sealing performance. See also Figure 2-3 In some embodiments, the opening 11 is oriented upwards, the stirring shaft 31 extends downwards, and the cover plate 2 is located above the tank body 1. The side of the cover plate 2 facing the tank body 1 is provided with a guide ring 21, and the first sealing member 4 is sleeved on the guide ring 21. The side of the first sealing member 4 facing the stirring shaft 31 acts on the cover plate 2, and the side of the first sealing member 4 facing the stirring shaft 31 acts on the tank body 1.

[0030] See Figure 2-3In some embodiments, the guide ring 21 has a first inclined surface 22 on the side facing away from the stirring shaft 31. The first inclined surface 22 is gradually inclined towards the stirring shaft 31 from the end near the cover plate 2 to the end away from the cover plate 2. The tank body 1 has a second inclined surface 12 on the side facing the guide ring 21. The second inclined surface 12 is facing the first inclined surface 22 and is parallel to the first inclined surface 22. A gap is formed between the second inclined surface 12 and the first inclined surface 22 that is inclined relative to the stirring shaft 31. The gap between the second inclined surface 12 and the first inclined surface 22 can prevent hard contact between the guide ring 21 and the tank body 1 and reduce metal friction between the guide ring 21 and the tank body 1. In addition, the gap between the second inclined surface 12 and the first inclined surface 22 can make it less likely for the material to fall out of the tank body 1 when it is stirred by the stirring paddle 32. The second inclined surface 12 can limit the guide ring 21 and restrict the radial movement of the guide ring 21 and the cover plate 2 along the stirring shaft 31.

[0031] See Figure 3 The first sealing element 4 includes a first sealing ring 41, which is fitted over the guide ring 21. The end edge of the first sealing ring 41 abuts against the tank body 1. The first sealing ring 41 is a VD-type rubber sealing ring. The thicker side of the first sealing ring 41 fits over the guide ring 21, ensuring that the first sealing ring 41 is more firmly fixed to the guide ring 21. The thinner side of the first sealing ring 41 abuts against the tank body 1, thereby sealing the gap between the second inclined surface 12 and the first inclined surface 22. Compared with traditional sealing rings, the first sealing ring 41, which uses a VD-type rubber sealing ring, has better elastic recovery capability and can maintain tight contact with the pipe body and the cover plate 2 under disturbance.

[0032] See Figure 3 The first sealing element 4 also includes a sealing ring pressure ring 42, which is fitted over the first sealing ring 41. The sealing ring pressure ring 42 is used to fix the first sealing ring 41. The sealing ring pressure ring 42 can provide a stable preload for the first sealing ring 41 and restrict the radial movement of the first sealing ring 41 along the stirring shaft 31. Specifically, the sealing ring pressure ring 42 is fitted over the thicker side of the first sealing ring 41, thereby firmly fixing the first sealing ring 41 to the outside of the guide ring 21. The sealing ring pressure ring 42 can be made of rubber or silicone.

[0033] See Figure 3 In some embodiments, the first sealing element 4 further includes a second sealing ring 43, which is sleeved on the outside of the guide ring 21 and sandwiched between the first sealing ring 41 and the cover plate 2. The second sealing ring 43 is located on the side of the first sealing ring 41 facing away from the tank body 1. The second sealing ring 43 can restrict the first sealing ring 41 from moving axially along the stirring shaft 31, thereby further fixing the first sealing ring 41 on the guide ring 21.

[0034] See Figure 3 The second sealing element 5 includes a third sealing ring 51, which abuts against the tank body 1. The cover plate 2 is located axially above the third sealing ring 51. The third sealing ring 51 is a VD-type rubber sealing ring. The thicker side of the third sealing ring 51 fits over the tank body 1, ensuring a more secure fixation. The thinner side of the third sealing ring 51 supports the cover plate 2, thus sealing the gap between the tank body 1 and the cover plate 2. Compared to traditional sealing rings, the VD-type rubber sealing ring of the third sealing ring 51 has better elastic recovery capability, enabling it to maintain tight contact with both the pipe body and the cover plate 2 under axial disturbance.

[0035] See Figure 2-3 In some embodiments, the opening 11 faces upward, the cover plate 2 is located above the tank body 1, and the second sealing element 5 also includes a fourth sealing ring 52. The fourth sealing ring 52 abuts against the cover plate 2 and the third sealing ring 51 respectively. Specifically, the thinner side of the third sealing ring 51 is supported at the top of the third sealing ring 51, the top of the third sealing ring 51 abuts against the bottom of the fourth sealing ring 52, and the top of the fourth sealing ring 52 abuts against the bottom surface of the cover plate 2. The fourth sealing ring 52 cooperates with the third sealing ring 51 to seal the gap between the cover plate 2 and the tank body 1.

[0036] See Figure 1-3 The dry mixing tank also includes a base 6, with the tank body 1 mounted on the base 6. The second sealing element 5 also includes a sealing gasket 53, which surrounds the third sealing ring 51. The two opposite sides of the sealing gasket 53 abut against the base 6 and the fourth sealing ring 52, respectively. The bottom end of the sealing gasket 53, closer to the stirring shaft 31, abuts against the third sealing ring 51, while the bottom end of the sealing gasket 53, further away from the stirring shaft 31, abuts against the base 6. The tank body 1 supports the cover plate 2 through the second sealing element 5, and the base 6 supports the cover plate 2 through the sealing gasket 53, thereby ensuring that the fourth sealing ring 52 remains stable.

[0037] See Figure 2-3 The tank body 1 has an installation groove that is recessed toward the central axis of the stirring shaft 31. The installation groove is annular and the third sealing ring 51 is embedded in the installation groove. The installation groove is used to fix the third sealing ring 51, thereby limiting the position of the third sealing ring 51. The installation groove 13 can also support the third sealing ring 51 to prevent the third sealing ring 51 from sliding away from the cover plate 2 due to the pressure of the cover plate 2.

[0038] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs.

[0039] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A dry stirred tank characterized in that, include: The tank body has an opening; A cover plate, which is movably positioned to cover the opening; A stirring mechanism, comprising a stirring shaft and a stirring paddle, wherein the stirring shaft is rotatably mounted on the cover plate, and the stirring paddle is connected to the stirring shaft and is located inside the tank; The first sealing element is sealed to both the tank body and the cover plate when the cover plate is placed over the opening. The second sealing element surrounds the first sealing element, and when the cover plate is placed over the opening, the second sealing element is sealed to both the tank body and the cover plate.

2. The dry-stirred tank of claim 1, wherein: The cover plate has a guide ring on the side facing the tank, and the first sealing element is fitted outside the guide ring.

3. The dry-stir tank of claim 2, wherein: The guide ring has a first inclined surface on the side facing away from the stirring shaft. The first inclined surface is gradually inclined towards the stirring shaft from the end near the cover plate to the end away from the cover plate. The tank body has a second inclined surface on the side facing the guide ring. The second inclined surface is facing the first inclined surface and is parallel to the first inclined surface.

4. The dry-stir tank of claim 2, wherein: The first sealing element includes a first sealing ring, which is sleeved outside the guide ring and has its end edge abutting against the tank body. The first sealing ring is a VD type rubber sealing ring.

5. The dry-stir tank of claim 4, wherein: The first sealing element further includes a sealing ring pressure ring, which is sleeved around the first sealing ring.

6. The dry-stir tank of claim 5, wherein: The first seal also includes a second sealing ring, which is fitted over the guide ring and sandwiched between the first sealing ring and the cover plate.

7. The dry-stir tank of claim 1, wherein: The second sealing element includes a third sealing ring, which is fitted onto the tank body and is a VD type rubber sealing ring.

8. The dry mixing tank according to claim 7, characterized in that: The second seal also includes a fourth sealing ring, which abuts against the cover plate and the third sealing ring respectively.

9. The dry mixing tank according to claim 8, characterized in that: It also includes a base, on which the tank body is mounted, and the second seal also includes a sealing gasket, which surrounds the third sealing ring, with the opposite sides of the sealing gasket abutting against the base and the fourth sealing ring, respectively.

10. The dry mixing tank according to claim 7, characterized in that: The tank body has an annular mounting groove with the opening facing away from the stirring shaft, and the third sealing ring is embedded in the mounting groove.

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