Sealing mechanism and stirrer

Abstract

The invention relates to the technical field of stirring equipment, in particular to a sealing mechanism and a stirrer. The sealing mechanism comprises a first sealing group and a second sealing group, the first sealing group is in sealing connection with the first rotating body, and the first sealing group is used for synchronously rotating with the first rotating body; the second sealing set is connected with the cover body in a sealed mode, the second sealing set is arranged on the periphery of the first sealing set in a sleeving mode and connected with the peripheral face of the first sealing set in a sealed mode, and the first sealing set can rotate relative to the second sealing set. The first sealing set and the first rotating body are relatively static, friction is reduced, the service life of the sealing mechanism is prolonged, meanwhile, the risk that chippings fall into slurry is reduced, and then the purity of materials is improved. Even if the first sealing group rotates and rubs relative to the second sealing group, scraps are generated on the outer peripheral surface of the first sealing group, and the scraps do not fall into the sealing area.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stirring equipment, in particular to a sealing mechanism and a blender. BACKGROUND

[0002] Blenders are widely used in the field of mixing. In some fields with high requirements for mixing uniformity, the blender rotates the material while the stirring barrel for containing the material rotates in the opposite direction. However, in the process of stirring some materials with strong chemical corrosion, the sealing performance of the stirring barrel is also a problem worth noting.

[0003] At this time, due to the continuous rotation of the stirring barrel, the sealing element between the stirring barrel and the cover body continuously rubs against the stirring barrel or the cover body, resulting in low service life of the sealing element, and the debris generated by the rubbing of the sealing element is easy to fall into the material, causing contamination of the material. SUMMARY

[0004] Therefore, it is necessary to provide a sealing mechanism and a blender to solve the above problems.

[0005] A sealing mechanism, the two ends of the sealing mechanism in the axial direction are respectively used for sealing connection with a cover body and a first rotating body having a sealing area, so that the cover body and the sealing mechanism seal the sealing area.

[0006] The sealing mechanism comprises:

[0007] a first sealing group, which is sealingly connected with the first rotating body and is used for synchronous rotation with the first rotating body; and

[0008] a second sealing group, which is sealingly connected with the cover body and is sleeved on the outer periphery of the first sealing group and sealingly connected with the outer peripheral surface of the first sealing group, and the first sealing group is rotatable relative to the second sealing group.

[0009] The sealing mechanism is synchronously rotated with the first rotating body through the first sealing group, and the relative static state between the two is realized, so that the static sealing form is realized, which is beneficial to reduce the dry friction between the first sealing group and the first rotating body, improve the service life of the sealing mechanism, reduce the debris generated by dry friction, reduce the risk of debris falling into the slurry, and further improve the purity of the material and ensure the use effect of the lithium battery.

[0010] At the same time, the sealing mechanism shifts the dynamic sealing position of relative motion to the outer peripheral surface of the first sealing group, so that even if the first sealing group rotates and rubs against the second sealing group, the debris generated on the outer peripheral surface of the first sealing group will not fall into the sealing area.

[0011] In one embodiment, the clamping force between the first sealing assembly and the first rotating body along the axial direction is used to seal the first sealing assembly and the first rotating body along the axial direction, the axial direction being parallel to the rotation axis of the first rotating body. This utilizes the external force of the cover acting on the first sealing assembly along the axial direction to increase the clamping force between the first sealing assembly and the first rotating body, thereby improving the sealing effect.

[0012] In one embodiment, the first sealing assembly includes:

[0013] The second rotating body is disposed in the second sealing assembly along the axial direction;

[0014] A first seal is disposed between the surfaces of the second rotating body and the first rotating body that are opposite each other along the axial direction, and the first seal is configured to seal the second rotating body and the first rotating body along the axial direction.

[0015] The sealing mechanism can press the first sealing group with external force, which can press the first sealing element, thereby increasing the sealing between the second rotating body and the first rotating body, forming a good sealing effect between the second rotating body and the first rotating body. Since the two rotate synchronously, there is no need to consider the wear of the first sealing element.

[0016] In one embodiment, the first sealing assembly has a sealed position and an open position relative to the first rotating body;

[0017] When the first sealing assembly is in the sealing position, the first sealing assembly abuts against the first rotating body along the axial direction, the sealing area is sealed, and the clamping force between the first sealing assembly and the first rotating body along the axial direction is configured to keep the first sealing assembly and the first rotating body relatively stationary.

[0018] When the first sealing assembly is in the open position, the first sealing assembly separates from the first rotating body, and the sealing area opens.

[0019] The sealing mechanism seals or opens the sealing area by controlling the relative position between the first sealing group and the first rotating body, without the need to separate the first sealing group and the second sealing group or the second sealing group from the cover, which is convenient for operation.

[0020] In one embodiment, the first sealing assembly and the first rotating body are pressed together and sealed by the clamping force exerted by the cover on the second sealing assembly along the axial direction.

[0021] Although the first sealing assembly is not directly connected to the cover, the force can be transmitted through the external force applied by the cover to the second sealing assembly, increasing the clamping force between the first sealing assembly and the first rotating body, thereby achieving a sealed connection between the first sealing assembly and the first rotating body. This sealing method is easy to implement, requiring no external force to be applied to structures other than the cover to achieve a seal, which helps to simplify the structure and save energy.

[0022] In one embodiment, the first sealing assembly has a first end face disposed along the axial direction facing the cover body;

[0023] The second sealing assembly has a second end face facing the first rotating body along the axial direction;

[0024] The first end face and the second end face abut against each other along the axial direction.

[0025] The sealing mechanism abuts against each other through the first end face and the second end face, so that the pressing force of the cover body acting on the second sealing assembly in the axial direction towards the first rotating body is applied to the first end face through the second end face, so as to achieve a seal between the first sealing assembly and the first rotating body.

[0026] In one embodiment, the sealing mechanism further includes:

[0027] The bearing is disposed between the first sealing group and the second sealing group.

[0028] Bearings help convert the sliding friction generated by the rotation of the first sealing group relative to the second sealing group into rolling friction, which helps to improve service life.

[0029] In one embodiment, the first sealing assembly and the second sealing assembly are arranged radially movable;

[0030] The radial direction is perpendicular to the axial direction.

[0031] When the first sealing assembly and the first rotating body are not coaxial due to machining errors, the first sealing assembly and the second sealing assembly can be radially movable to allow the first sealing assembly to be finely adjusted in the radial direction so that the first sealing assembly and the first rotating body are coaxially arranged to ensure the stability when they rotate synchronously.

[0032] In one embodiment, the bearing includes:

[0033] A bearing housing is disposed on one of the surfaces of the first sealing group and the second sealing group that are axially facing each other. The bearing housing is provided with a plurality of movable grooves, which are spaced apart circumferentially along the first sealing group.

[0034] Multiple balls are provided, each corresponding to one of the multiple movable grooves, and are disposed in the movable grooves. The diameter of the movable groove is larger than the diameter of the ball. The ball protrudes from the movable groove and abuts against the first sealing group and the second sealing group without the bearing seat.

[0035] This bearing, through the rolling of balls within a movable groove, transforms the sliding friction of the first sealing assembly relative to the second sealing assembly during rotation into rolling friction of the balls within the groove, thus improving the service life of both the first and second sealing assemblies. Simultaneously, the diameter of the movable groove is larger than the diameter of the balls, allowing the balls radial movement within the groove. This, in turn, provides the first sealing assembly with radial movement space, enabling it to finely adjust its position according to the axis of rotation of the first rotating body, ensuring coaxial rotation between the first sealing assembly and the first rotating body.

[0036] In one embodiment, the first sealing assembly has a first end face facing the cover;

[0037] The second sealing assembly has a second end face facing the first rotating body;

[0038] The bearing is disposed between the first end face and the second end face.

[0039] This bearing facilitates the rolling of balls relative to the first end face when the first rotating body drives the first rotating part to rotate relative to the sleeve, thereby reducing friction. At the same time, when the cover is opened, the bearing located between the first and second end faces can also serve as a load-bearing structure to support the weight of the first sealing assembly, the sleeve, and the fifth seal.

[0040] In one embodiment, the first sealing assembly includes a second rotating body, the second rotating body comprising:

[0041] The first rotating part is sealed to the first rotating body;

[0042] The second rotating part is connected to the end of the first rotating part away from the first rotating body, and the second rotating part is sealed to the surface of the second sealing assembly facing the cover.

[0043] The second rotating body is axially clamped at both ends of the second sealing assembly by the first and second rotating parts, thereby connecting the second sealing assembly to the cover. This means that opening the cover allows the sealing surfaces of the second and first rotating bodies to be opened, simplifying the connection between the cover and the sealing mechanism, simplifying the operation of opening or sealing the first rotating body, and ensuring synchronous rotation between the second and first rotating bodies. The sealing connection between the second rotating part and the surface of the second sealing assembly facing the cover helps prevent dust or debris from spilling between the first and second sealing assemblies, thus improving the quality of the slurry.

[0044] In one embodiment, the surface of the second rotating part facing the second sealing assembly along the axial direction is a third end face;

[0045] The surface of the second sealing assembly facing the second rotating part along the axial direction is the fourth end face;

[0046] The third end face and the fourth end face are respectively provided with a sealing groove or a sealing protrusion;

[0047] The sealing groove and the sealing protrusion are inserted into each other along the axial direction. When the second rotating part rotates, the sealing protrusion and the sealing groove slide together.

[0048] The fit between the sealing groove and the sealing ring has a dustproof effect, which helps to prevent debris generated between the first sealing group and the second sealing group from entering the slurry in the sealing area.

[0049] In one embodiment, a bearing is further provided between the third end face and the fourth end face.

[0050] When the second rotating part rotates, the balls roll relative to the third end face to reduce friction. When the cover presses against the first rotating body, the bearing located between the third and fourth end faces can withstand the thrust of the first rotating body on the first sealing assembly.

[0051] In one embodiment, the second sealing assembly includes:

[0052] A sleeve is fitted onto the outer circumferential surface of the first sealing assembly;

[0053] The second sealing element is disposed between the outer peripheral surface of the first sealing assembly and the inner wall of the sleeve, and the second sealing element abuts against the outer peripheral surface of the first sealing assembly and the inner wall of the sleeve.

[0054] The second seal is used as a dynamic sealing structure. Since the second seal is located on the outer periphery of the first rotating part, even if the debris generated by the first rotating part falls under the action of gravity, it will not fall directly into the first rotating body, but will only fall between the first convex ring and the second convex ring, which helps to ensure the quality of the slurry.

[0055] In one embodiment, the second seal includes:

[0056] The main trunk extends along the said axial direction;

[0057] Two branches are connected at an angle to one end of the main trunk. One of the two branches abuts against the outer peripheral surface of the first sealing assembly, and the other abuts against the inner wall of the sleeve. The two branches can move closer to or further away from each other in a radial direction, which is perpendicular to the axial direction.

[0058] The second seal has a Y-shaped structure, with two branches that abut against the first rotating part and the sleeve respectively. This allows the distance between the two branches to be finely adjusted even when the first rotating part has a certain radial displacement, in order to accommodate the radial displacement of the first rotating part. This helps to ensure that the second seal maintains a dynamic seal with the inner wall of the sleeve during the rotation of the first rotating part, thereby improving the stability of the sealing structure.

[0059] In one embodiment, the second seal further includes:

[0060] A buffer element, disposed between the two branches, is configured to provide radial abutment force to the two branches, facilitating their contact with the first rotating part and the sleeve. Simultaneously, the buffer element can promptly reset itself if the two branches deform due to radial displacement of the first rotating part, ensuring the sealing performance of the second seal.

[0061] In one embodiment, the second seal is in multiple sets, with the multiple sets of second seals arranged opposite each other or in the same direction along the axial direction to increase the sealing between the first rotating part and the sleeve. Even if one of the second seals is damaged, the multiple sets of second seals can still ensure the sealing between the first sealing group and the second sealing group, which is beneficial to improving the stability of the sealing between the first sealing group and the second sealing group.

[0062] A mixer, comprising:

[0063] Cover;

[0064] The sealing mechanism described above includes a first sealing group and a second sealing group, wherein the second sealing group is sealed to the cover body.

[0065] A first rotating body is provided with a sealing area for containing materials. A first sealing assembly is sealed to the first rotating body to seal the sealing area, and the first sealing assembly rotates synchronously with the first rotating body.

[0066] The main seal of this mixer is a static seal between the first and second rotating bodies. Here, the first seal comes into contact with the slurry; the static seal helps prevent debris from wear on the first seal from contaminating the slurry, thus ensuring slurry quality. The secondary seal of this sealing mechanism is a dynamic seal between the second rotating body and the sleeve.

[0067] In one embodiment, the mixer further includes:

[0068] Frame;

[0069] An opening mechanism is provided on the frame and connected to the cover. The opening mechanism is configured to drive the cover and the sealing mechanism to move axially to open or seal the sealing area.

[0070] This opening mechanism can automatically open or seal the sealing area, and its automated operation improves safety. The opening mechanism can also increase the clamping force between the first sealing assembly and the first rotating body by increasing the clamping force on the cover, thereby improving the sealing effect of the sealing area.

[0071] In one embodiment, the opening mechanism includes:

[0072] The driving component is mounted on the frame.

[0073] A guide assembly is disposed between the output end of the drive member and the frame, and the guide assembly is configured to provide guidance for the movement of the cover along the axial direction.

[0074] This opening mechanism helps improve the stability of the cover and sealing mechanism when they open or close axially, reduces jamming, and improves the stability of the sealing mechanism when it descends to seal the first rotating body, so that it abuts against the preset position of the first rotating body.

[0075] In one embodiment, the guide components are in multiple sets, and the multiple sets of guide components are arranged in parallel.

[0076] When the sealing mechanism and the first rotating body are closed, they are sealed by the second sealing element. The uniformity of the radial force on the second sealing element affects its sealing effect. The uniformity of the force on the second sealing element is related to the parallelism between the contact surfaces of the sealing mechanism and the first rotating body. Multiple sets of guide components help to improve the parallelism between the sealing mechanism and the first rotating body, thereby improving the sealing performance of the second sealing element. Attached Figure Description

[0077] Figure 1 This is a cross-sectional structural diagram of a mixer provided in one embodiment of this application.

[0078] Figure 2 This is a schematic diagram of the structure of a guide component provided in one embodiment of this application.

[0079] Figure 3 This is a cross-sectional structural diagram of a sealing mechanism provided in one embodiment of this application.

[0080] Figure 4 This is a schematic diagram of the structure of the first sealing assembly provided in one embodiment of this application.

[0081] Figure 5 for Figure 3A magnified view of a portion of point A in the middle.

[0082] Figure 6 for Figure 3 A magnified view of a section at point B in the middle.

[0083] Figure 7 for Figure 3 A magnified view of a section at point C.

[0084] Figure 8 This is a schematic diagram of the structure of a bearing provided in one embodiment of this application. Figure 1 .

[0085] Figure 9 This is a schematic diagram of the structure of a bearing provided in one embodiment of this application. Figure 2 .

[0086] Explanation of reference numerals in the attached figures:

[0087] 1000 - Sealing mechanism;

[0088] 100 - First sealing assembly; 110 - Second rotating body; 111 - First rotating part; 1111 - First body; 1112 - First convex ring; 1112a - First end face; 1112b - First sealing surface; 112 - Second rotating part; 1121 - Third end face; 1122 - Third body; 1123 - Third convex ring; 1123a - Sealing groove; 120 - First sealing element; 130 - Fifth sealing element;

[0089] 200 - Second sealing assembly; 210 - Sleeve; 211 - Second body; 212 - Second convex ring; 2121 - Second end face; 213 - Sealing ring; 214 - Fourth convex ring; 2141 - Sealing convex ring; 2142 - Fourth end face; 2143 - Fifth end face; 220 - Second sealing element; 221 - Main shaft; 222 - Branch; 223 - Buffer element;

[0090] 300 - Bearing; 310 - Bearing housing; 311 - Movable groove; 320 - Ball bearing;

[0091] 400 - Third seal;

[0092] 500 - Fourth seal;

[0093] 2000-Cap;

[0094] 3000 - First Rotating Body;

[0095] 4000-frame;

[0096] 5000 - Opening mechanism; 5001 - Driving component; 5002 - Guide assembly; 5021 - Guide rail; 5022 - Slider;

[0097] 6000 - Stirring mechanism;

[0098] 7000 - Rotary drive mechanism. Detailed Implementation

[0099] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0100] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms 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.

[0101] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0102] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0103] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0104] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0105] See Figure 1 , Figure 1 A cross-sectional structural schematic diagram of a mixer provided in one embodiment of this application is shown.

[0106] First, it is worth noting that in this embodiment, the axial direction is parallel to the extension direction of the rotation axis of the first rotating body 3000. The radial direction is perpendicular to the axial direction, and the radial direction is the direction from the rotation axis of the first rotating body 3000 to its outer circumferential surface. The circumferential direction is the direction along the outer circumference of the rotation axis.

[0107] like Figure 1 As shown, this embodiment provides a mixer, which includes a cover 2000 and a first rotating body 3000. The first rotating body 3000 is provided with a sealing area for containing materials. During operation, the materials to be mixed are put into the sealing area, and then the cover 2000 is used to cover the first rotating body 3000 to seal the sealing area, and then the mixing operation is carried out.

[0108] For example, in the field of mixers, the first rotating body 3000 is a mixing tank.

[0109] This mixer can be used to mix any materials. For example, this embodiment will be described using the mixing of lithium battery slurry as an example.

[0110] Please continue reading Figure 1In one embodiment, the mixer further includes a stirring mechanism 6000, which is disposed on the cover 2000. The stirring end of the stirring mechanism 6000 is used to stir the material in the sealed area. Specifically, the stirring mechanism 6000 stirs the material by driving the stirring end to rotate.

[0111] In one embodiment, in order to improve the uniformity of the materials mixed by the mixer, the mixer further includes a rotary drive mechanism 7000. A first rotating body 3000 is disposed at the output end of the rotary drive mechanism 7000, thereby driving the first rotating body 3000 to rotate, so that the first rotating body 3000 can rotate on its own axis to mix the materials.

[0112] Optionally, the first rotating body 3000 and the stirring mechanism 6000 rotate in opposite directions. While the first rotating body 3000 rotates around the first direction, it drives the material inside the first rotating body 3000 to rotate along the first direction. At the same time, the stirring mechanism 6000 stirs the material in a direction opposite to the first direction, so that the material is uniformly mixed under the different directions of the first rotating body 3000 and the stirring mechanism 6000, which is beneficial to improving the mixing efficiency.

[0113] Furthermore, the first rotating body 3000 rotates around its axial direction, while the stirring mechanism 6000 is eccentrically positioned so that the centers of the stirring mechanism 6000 and the first rotating body 3000 are not aligned. The first rotating body 3000 within the stirring mechanism 6000 rotates at high speed, and simultaneously, the first rotating body 3000 itself also rotates around its central axis. The rotation direction of the first rotating body 3000 is opposite to that of the stirring mechanism 6000. As the first rotating body 3000 rotates, it causes the material within it to collide with the stirring mechanism 6000. This counter-current relative motion generates strong shearing, convection, and diffusion effects, effectively breaking up the agglomeration of slurry particles, achieving rapid and uniform mixing, and reducing dead zones. This is particularly suitable for high-viscosity, high-solids-content lithium battery slurries.

[0114] Furthermore, during the mixing process, the first rotating body 3000 needs to rotate to achieve efficient mixing, while the cover 2000 needs to remain fixed to accommodate various auxiliary devices such as vacuum pipes, feeding ports, discharging ports, temperature and pressure sensors, and cleaning spray balls. The mixing process is typically carried out under negative pressure to remove air bubbles from the slurry. Therefore, the sealing structure between the cover 2000 and the first rotating body 3000 must possess excellent vacuum sealing performance to prevent external air from entering and affecting the slurry quality. Thus, the sealing performance between the cover 2000 and the first rotating body 3000 is crucial.

[0115] In one embodiment, the mixer further includes a frame 4000 and a lid-opening mechanism 5000. The lid-opening mechanism 5000 is mounted on the frame 4000 and connected to the lid 2000. The lid-opening mechanism 5000 is configured to drive the lid 2000 and the sealing mechanism 1000 to move axially to open or close the sealing area. This opening mechanism enables automatic opening or sealing of the sealing area, and automated operation improves safety. The lid-opening mechanism 5000 can also increase the clamping force between the first sealing assembly 100 and the first rotating body 3000 by increasing the clamping force on the lid 2000, thereby improving the sealing effect of the sealing area.

[0116] like Figure 2 and Figure 1 As shown, in one embodiment, the cover opening mechanism 5000 includes a drive member 5001 and a guide assembly 5002. The drive member 5001 is disposed on the frame 4000; exemplaryly, the drive member 5001 is an electric cylinder to achieve electric drive. The guide assembly 5002 is disposed between the output end of the drive member 5001 and the frame 4000, and the guide assembly 5002 is configured to provide guidance for the axial movement of the cover 2000, improving the stability of the movement of the cover 2000 and the sealing mechanism 1000 when they open or close axially, which helps to reduce jamming, and also helps to improve the stability of the sealing mechanism 1000 when it descends to seal the first rotating body 3000, so that it abuts against the preset position of the first rotating body 3000.

[0117] Optionally, the guide assembly 5002 includes a guide rail 5021 and a slider 5022, wherein the guide rail 5021 is axially disposed on the frame 4000, the slider 5022 is slidably engaged with the guide rail 5021, and the slider 5022 is connected to the cover 2000.

[0118] In one embodiment, there are multiple sets of guide components 5002, which are arranged in parallel. The multiple sets of guide components 5002 are beneficial to improving the guiding accuracy of the guide components 5002.

[0119] For example, the guide component 5002 consists of three sets.

[0120] like Figure 3 and Figure 1As shown, this example also provides a sealing mechanism 1000. The two ends of the sealing mechanism 1000 along the axial direction are respectively used for sealing connection with a cover 2000 and a first rotating body 3000 having a sealing area, so that the cover 2000 and the sealing mechanism 1000 seal the sealing area. The sealing mechanism 1000 includes a first sealing group 100 and a second sealing group 200. The first sealing group 100 is sealed to the first rotating body 3000 and is used to rotate synchronously with the first rotating body 3000. The second sealing group 200 is sealed to the cover 2000 and is sleeved on the outer periphery of the first sealing group 100, and is sealed to the outer peripheral surface of the first sealing group 100. The first sealing group 100 can rotate relative to the second sealing group 200.

[0121] The sealing mechanism 1000 rotates synchronously with the first sealing group 100 and the first rotating body 3000, while the two remain relatively stationary, achieving a static seal. This helps reduce dry friction between the first sealing group 100 and the first rotating body 3000, thus improving the service life of the sealing mechanism 1000. It also reduces the amount of debris generated due to dry friction, thereby reducing the risk of debris falling into the slurry, improving the purity of the material, and ensuring the performance of the lithium battery.

[0122] At the same time, the sealing mechanism 1000 transfers the dynamic sealing position of the relative movement to the outer peripheral surface of the first sealing group 100. Even if the first sealing group 100 rotates and rubs relative to the second sealing group 200, causing debris to be generated on the outer peripheral surface of the first sealing group 100, these debris will not fall into the sealing area.

[0123] In related technologies, when a sealing ring is used between the cover and the first rotating body, its sealing performance is related to the clamping force between them; only by increasing the clamping force can the sealing effect be guaranteed. However, the greater the clamping force, the greater the wear on the sealing ring, resulting in a shorter service life and more debris. After the cover is opened, debris located between the cover and the first rotating body can easily fall into the sealing area, thereby contaminating the slurry and potentially causing the expensive slurry to be scrapped.

[0124] In this embodiment, the first sealing group 100 of the sealing mechanism 1000 rotates synchronously with the first rotating body 3000, while the two remain relatively stationary. This prevents friction on the sealing surface of the first rotating body 3000. In this case, to increase the clamping force between the first sealing group 100 and the first rotating body 3000, the sealing performance between them can be improved with minimal impact on service life and no debris generation. Simultaneously, the sealing surface between the first sealing group 100 and the second sealing group 200 is located on the outer circumferential surface of the first sealing group 100. The sealing performance of this surface is independent of the clamping force, thus reducing the friction between the first sealing group 100 and the second sealing group 200 compared to the friction between the cover 2000 and the first rotating body 3000 in related technologies. This reduces debris generated by friction, which is beneficial for improving the service life of the sealing mechanism 1000, reducing the impact of debris on material purity, and improving the stability and safety of mixing.

[0125] Furthermore, the sealing mechanism 1000 can be applied to sealing connections between any cover 2000 and the first rotating body 3000, which helps to expand the applicability of the sealing mechanism 1000.

[0126] Please continue reading Figures 4-6 In one embodiment, the second sealing assembly 200 and the cover 2000 can be connected by a connector and sealed by a third sealing element 400, or they can be sealed and connected by welding. The third sealing element 400 can be a sealing ring. Optionally, a sealing groove is provided on one of the second sealing assembly 200 and the cover 2000, and the sealing ring is disposed in the sealing groove and protrudes from it. When the second sealing assembly 200 and the cover 2000 are connected, the sealing ring is compressed by increasing the locking force of the connector, thereby achieving a sealed connection between the second sealing assembly 200 and the cover 2000.

[0127] In this embodiment, for example, a sealing groove is disposed on the surface of the second sealing assembly 200 facing the cover 200 axially, and a sealing ring is located in the sealing groove. When the second sealing assembly 200 is connected to the cover 2000, the sealing ring abuts against the surface of the cover 2000 facing the second sealing assembly 200 axially.

[0128] In one embodiment, the first sealing assembly 100 and the first rotating body 3000 can be sealed and connected by welding. In this case, when the sealing area is opened, the second sealing assembly 200 separates from the first sealing assembly 100. When sealing the sealing area, the second sealing assembly 200 is fitted onto the first sealing assembly 100 and seals the outer peripheral surface of the first sealing assembly 100.

[0129] In one embodiment, the axial clamping force between the first sealing assembly 100 and the first rotating body 3000 is used to seal the first sealing assembly 100 and the first rotating body 3000 in the axial direction, thereby increasing the clamping force between the first sealing assembly 100 and the first rotating body 3000 by utilizing the external force of the cover 2000 acting on the first sealing assembly 100 in the axial direction, so as to improve the sealing effect.

[0130] In one embodiment, the first sealing assembly 100 has a sealed position and an open position relative to the first rotating body 3000. When the first sealing assembly 100 is in the sealed position, it abuts against the first rotating body 3000 axially, sealing the sealing area. The axial sealing abutment force between the first sealing assembly 100 and the first rotating body 3000 is configured to keep them relatively stationary. When the first sealing assembly 100 is in the open position, it separates from the first rotating body 3000, opening the sealing area. This sealing mechanism 1000 seals or opens the sealing area by controlling the relative position between the first sealing assembly 100 and the first rotating body 3000, eliminating the need to separate the first sealing assembly 100 and the second sealing assembly 200 or the second sealing assembly 200 from the cover 2000, thus facilitating operation.

[0131] Based on the aforementioned working position, the first sealing assembly 100 can rotate relative to the second sealing assembly 200, but when the first sealing assembly 100 is away from the first rotating body 3000, the first sealing assembly 100 will not detach from the second sealing assembly 200. Simultaneously, the second sealing assembly 200 and the cover 2000 are fixedly connected; this fixed connection can be either detachable or non-detachable. For example, in this embodiment, the second sealing assembly 200 is detachably fixedly connected to the cover 2000 via a structure such as screws.

[0132] In one embodiment, the first sealing assembly 100 and the first rotating body 3000 are pressed and sealed by the clamping force exerted axially by the cover 2000 on the second sealing assembly 2000. Although the first sealing assembly 100 is not directly connected to the cover 2000, the external force applied by the cover 2000 to the second sealing assembly 2000 can transmit force, increasing the clamping force between the first sealing assembly 100 and the first rotating body 3000, thereby achieving a sealed connection between the first sealing assembly 100 and the first rotating body 3000. This sealing method is easy to implement, requiring no external force to be added to structures other than the cover 2000 to achieve sealing, which helps to simplify the structure and save energy.

[0133] Now combined Figure 4 The detailed structure of the first sealing assembly 100 is described below.

[0134] like Figure 5 and Figure 4As shown, the first sealing assembly 100 includes a second rotating body 110 and a first sealing element 120. The second rotating body 110 is axially disposed in the second sealing assembly 200, and the first sealing element 120 is disposed between the axially opposite surfaces of the second rotating body 110 and the first rotating body 3000, and the first sealing element 120 is configured to seal the second rotating body 110 and the first rotating body 3000 axially. This sealing mechanism 1000 can press the first sealing assembly 100 with external force, thereby pressing the first sealing element 120, increasing the sealing performance between the second rotating body 110 and the first rotating body 3000, forming a good sealing effect between them. Furthermore, since both rotate synchronously, there is no need to consider the wear of the first sealing element 120.

[0135] For example, the first sealing element 120 is a sealing ring, and the surface of the second rotating body 110 facing the first rotating body 3000 along the axial direction is provided with a sealing groove. The sealing ring is disposed in the sealing groove and protrudes from the sealing groove to abut against the surface of the first rotating body 3000 facing the second rotating body 110 along the axial direction to achieve sealing.

[0136] Furthermore, the cross-sectional shape of the first sealing element 120 is mushroom-shaped, with the end cap of the mushroom head protruding from the sealing groove and abutting against the first rotating body 3000. When the first sealing assembly 100 is pressed by external force, the end cap of the mushroom head is pressed, thereby forming a good sealing effect between the first rotating body 3000 and the second rotating body 110.

[0137] Compared to a single radial contact seal, the sealing method of the first sealing assembly 100 avoids dry friction between the first sealing element 120 and the first rotating body 3000, preventing the generation of sealing debris that could contaminate the slurry. Furthermore, the clamping force of the static seal can be greater than that of the dynamic seal, resulting in better sealing performance. It should be noted that a static seal is a sealing method where two mutually sealing structures are relatively stationary, while a dynamic seal is a sealing method where there is relative movement between two mutually sealing contact structures.

[0138] For example, the sealing ring and the sealing groove can also be arranged in reverse, that is, the sealing groove is arranged on the first rotating body 3000.

[0139] like Figure 5 and Figure 4 As shown, in one embodiment, the second rotating body 110 includes a first rotating part 111, which is sealed to the first rotating body 3000, i.e., the first sealing member 120 is disposed between the first rotating part 111 and the first rotating body 3000.

[0140] Furthermore, such as Figure 5 and Figure 4As shown, the first rotating part 111 includes a first body 1111 and a first convex ring 1112. The first convex ring 1112 extends radially away from the center along the outer periphery of the first body 1111 and connects to the outer peripheral surface of the first body 1111. The first sealing assembly 100 has a first end face 1112a facing the cover 2000 along the axial direction, that is, the end face of the first convex ring 1112 facing away from the first rotating body 3000 is the first end face 1112a. The first end face 1112a is used to abut against the second sealing assembly 200. The surface of the first convex ring 1112 facing the first rotating body 3000 is the first sealing surface 1112b, and the first sealing member 120 is disposed on the first sealing surface 1112b.

[0141] Specifically, the first convex ring 1112 is located at the first end of the first body 1111 near the first rotating body 3000.

[0142] Please continue reading Figure 5 and Figure 4 In one embodiment, the second sealing assembly 200 has a second end face 2121 facing the first rotating body 3000 along the axial direction; the first end face 1112a and the second end face 2121 abut against each other along the axial direction. The sealing mechanism 1000, through the mutual abutment of the first end face 1112a and the second end face 2121, causes the pressing force exerted by the cover 2000 on the second sealing assembly 200 in the axial direction towards the first rotating body 3000 to be applied to the first end face 1112a through the second end face 2121, thereby achieving a seal between the first sealing assembly 100 and the first rotating body 3000.

[0143] like Figure 6 and Figure 4 As shown, in one embodiment, the second rotating body 110 further includes a second rotating part 112, which is connected to the end of the first rotating part 111 away from the first rotating body 3000, that is, the second rotating part 112 is connected to the first body 1111.

[0144] The second rotating body 110 is axially clamped at both ends of the second sealing assembly 200 by the first rotating part 111 and the second rotating part 112, so that the second sealing assembly 200 is connected to the cover 2000. That is, the sealing surfaces of the second rotating body 110 and the first rotating body 3000 can be opened by opening the cover 2000. This simplifies the connection between the cover 2000 and the sealing mechanism 1000, simplifies the operation of opening or sealing the first rotating body 3000, and can keep the second rotating body 110 and the first rotating body 3000 rotating synchronously.

[0145] The second rotating part 112 is sealed to the surface of the second sealing group 200 facing the cover 2000, which helps to prevent dust or debris from overflowing between the first sealing group 100 and the second sealing group 200, and helps to improve the quality of the slurry.

[0146] For example, in this embodiment, the first rotating part 111 and the second rotating part 112 are connected by a screw or other connecting member.

[0147] like Figure 6 and Figure 4 As shown, the first sealing assembly 100 further includes a fifth sealing element 130, which is disposed between the first rotating part 111 and the second rotating part 112 to ensure the sealing performance between them. Exemplarily, the fifth sealing element 130 is a sealing ring, which is a gasket-shaped sealing ring. Exemplarily, the fifth sealing element 130 is made of polytetrafluoroethylene (PTFE), which is resistant to acids, alkalis, and various organic solvents, and is almost insoluble in all solvents. PTFE also has high-temperature resistance and is widely used in chemical, mechanical, electronic, food processing, and medical fields. In the lithium battery slurry mixing process, the corrosion resistance of PTFE helps to improve its service life.

[0148] Please see Figure 6 and Figure 6 Optionally, a sealing groove 1123a and a sealing protrusion 2141 are provided between the second rotating part 112 and the second sealing assembly 200. The sealing groove 1123a and the sealing protrusion 2141 are axially inserted and engaged. When the second rotating part 112 rotates, the sealing protrusion 2141 and the sealing groove 1123a are slidably engaged. The engagement of the sealing groove 1123a and the sealing protrusion 2141 has a dustproof effect, which helps to prevent debris generated between the first sealing assembly 100 and the second sealing assembly 200 from entering the slurry in the sealing area.

[0149] Furthermore, the sealing groove 1123a and the sealing protrusion 2141 are in multiple sets. The multiple sets of sealing grooves 1123a and the multiple sets of sealing protrusions 2141 are arranged radially spaced and correspond one to one along the second rotating part 112, which is beneficial to forming a labyrinth seal, improving the dustproof sealing effect, and increasing the barrier to prevent debris from entering the slurry in the sealing area.

[0150] For example, in this embodiment, the sealing groove 1123a is disposed on the second rotating part 112, and the sealing protrusion 2141 is disposed on the second sealing assembly 200.

[0151] Please see Figure 3In one embodiment, the second rotating part 112 includes a third body 1122 and a third convex ring 1123. The third convex ring 1123 is connected to the outer peripheral surface of the third body 1122 and extends radially away from the third body 1122. The third body 1122 is used to connect with the first body 1111 and rotate synchronously with the first body 1111. Exemplarily, the third body 1122 and the first body 1111 are connected by screws. The surface of the third convex ring 1123 facing the first rotating body 3000 along the axial direction is the third end face 1121. The third end face 1121 is disposed opposite to the second sealing assembly 200, and a sealing groove 1123a is disposed on the third end face 1121.

[0152] Based on the above description, the cross-sectional shape of the first sealing group 100 parallel to the axial direction is similar to that of an I-beam, and the first convex ring 1112 and the third convex ring 1123 are structures that bulge outwards.

[0153] Now combined Figures 5-8 , Figure 3 The detailed structure of the second sealing assembly 200 is described below.

[0154] like Figure 5 and Figure 5 As shown, the second sealing assembly 200 includes a sleeve 210, which is sleeved on the first rotating part 111 and the second rotating part 112 of the first sealing assembly 100.

[0155] Please continue reading Figure 5 The sleeve 210 includes a second body 211 and a second protruding ring 212. The second protruding ring 212 extends radially away from the center along the outer periphery of the second body 211 and is connected to the outer peripheral surface of the second body 211. A second end face 2121 is located on the end face of the second protruding ring 212 facing the first rotating body 3000. The first end face 1112a and the second end face 2121 are arranged facing each other and abut against each other. This abutment can be direct contact or indirect contact, and this embodiment does not limit it.

[0156] When the first sealing assembly 100 and the first rotating body 3000 are pressed and sealed by the clamping force of the cover 2000 acting axially on the second sealing assembly 200, that is, by utilizing the abutment force between the first end face 1112a and the second end face 2121, the external force of the cover 2000 acting axially on the second sealing assembly 200 acts on the first convex ring 1112, and then on the surface of the first convex ring 1112 facing the first rotating body 3000, so as to increase the clamping force between the first convex ring 1112 and the first rotating body 3000 and improve the sealing performance between the first sealing assembly 100 and the first rotating body 3000.

[0157] like Figure 6As shown, the sleeve 210 also includes a sealing ring 213, which is connected to the outer peripheral surface of the second convex ring 212 and extends axially toward the first rotating body 3000. The sealing ring 213 is sleeved on the first convex ring 1112 and the first rotating body 3000. The sealing ring 213 helps to reduce dust or other impurities from entering the sealing area from the opposing sealing surfaces of the first convex ring 1112 and the first rotating body 3000, thereby improving the sealing effect of the sealing mechanism 1000.

[0158] In one embodiment, a fourth sealing element 500 is provided on the outer peripheral surface of the sealing ring 213 and the first convex ring 1112 to achieve a seal between the sealing ring 213 and the first convex ring 1112, thereby preventing debris generated in the gap between the sleeve 210 and the first rotating part 111, and between the sleeve 210 and the second rotating part 112 from falling into the sealing area.

[0159] For example, the second convex ring 212 is located at one end of the second body 211 near the first rotating body 3000.

[0160] like Figure 3 As shown, in one embodiment, the sleeve 210 further includes a fourth protruding ring 214, which is connected to the outer peripheral surface of the second body 211 and extends radially away from the center along the outer periphery of the second body 211. The fourth protruding ring 214 is located at one end of the sleeve 210 near the cover 2000.

[0161] The surface of the fourth convex ring 214 facing the cover 2000 along the axial direction is the fourth end face 2142, and the third end face 1121 of the third convex ring 1123 is disposed opposite to the fourth end face 2142. The third end face 1121 and the fourth end face 2142 are respectively provided with a sealing groove 1123a or a sealing convex ring 2141; the sealing groove 1123a and the sealing convex ring 2141 are inserted into each other along the axial direction, and when the second rotating part 112 rotates, the sealing convex ring 2141 and the sealing groove 1123a are slidably engaged.

[0162] It is worth noting that the fourth end face 2142 is a portion of the surface of the fourth convex ring 214 facing the cover 2000. The surface of the fourth convex ring facing the cover 2000 also includes a fifth end face 2143, which is located on the outer periphery of the fourth end face 2142 along the radial direction of the sleeve 210. The fifth end face 2143 is used for a sealing connection with the cover 2000, and the third sealing element 400 is disposed between the fifth end face 2143 and the cover 2000.

[0163] like Figure 7 and Figure 7As shown, in one embodiment, the second sealing assembly 200 further includes a second sealing member 220, which is disposed between the outer peripheral surface of the first sealing assembly 100 and the inner wall of the sleeve 210, and abuts against the outer peripheral surface of the first sealing assembly 100 and the inner wall of the sleeve 210. Specifically, the second sealing member 220 is disposed between the first rotating part 111 and the sleeve 210.

[0164] The second seal 220 is used as a dynamic sealing structure. Since the second seal 220 is located on the outer periphery of the first rotating part 111, even if the debris generated by the first rotating part 111 falls under the action of gravity, it will not fall directly into the first rotating body 3000, but will only fall between the first convex ring 1112 and the second convex ring 212, which is beneficial to ensuring the quality of the slurry.

[0165] When there are multiple sets of guide components 5002, when the sealing mechanism 1000 and the first rotating body 3000 are closed, they are sealed by the second sealing element 220. The uniformity of the radial force on the second sealing element 220 affects the sealing effect of the second sealing element 220. The uniformity of the force on the second sealing element 220 is related to the parallelism between the contact surfaces of the sealing mechanism 1000 and the first rotating body 3000. Multiple sets of guide components 5002 are beneficial to improving the parallelism between the sealing mechanism 1000 and the first rotating body 3000, thereby improving the sealing performance of the second sealing element 220.

[0166] like Figure 5 Furthermore, the second seal 220 includes a main stem 221 and two branches 222. The main stem 221 extends axially, and the two branches 222 are connected at an angle to one end of the main stem 221. One of the two branches 222 abuts against the outer peripheral surface of the first rotating part 111 of the first sealing assembly 100, and the other abuts against the inner wall of the sleeve 210. The two branches 222 can move closer to or further away from each other radially, with the radial direction perpendicular to the axial direction. The second seal 220 has a Y-shaped structure, utilizing the two branches 222 to abut against the first rotating part 111 and the sleeve 210 respectively. This allows the distance between the two branches 222 to be finely adjusted even when the first rotating part 111 has a certain radial displacement, to accommodate the radial displacement of the first rotating part 111. This helps to ensure that the second seal 220 maintains a dynamic seal with the inner wall of the sleeve 210 during the rotation of the first rotating part 111, improving the stability of the sealing structure. In addition, the second seal 220 abuts against the second rotating body 110 and the sleeve 210 respectively through two branches 222, which can maintain a sealing state when the second rotating body 110 is radially fine-tuned. Furthermore, the debris generated by the wear of the second seal 220 is located on the outer periphery of the second rotating body 110, and this part of the debris is isolated from the sealing area by the second rotating body 110.

[0167] In one embodiment, the second seal 220 further includes a buffer 223 disposed between the two branches 222. The buffer 223 is configured to provide radial abutment force to the two branches 222, which helps to keep the two branches 222 in contact with the first rotating part 111 and the sleeve 210. At the same time, the buffer 223 can also promptly reset when the two branches 222 deform due to the radial displacement of the first rotating part 111, so as to ensure the sealing performance of the second seal 220.

[0168] The second seal 220 consists of multiple sets, which are arranged opposite each other or in the same direction along the axial direction to increase the sealing performance between the first rotating part 111 and the sleeve 210. Even if one of the second seals 220 is damaged, the multiple sets of second seals 220 can still ensure the sealing performance between the first sealing group 100 and the second sealing group 200, which is beneficial to improving the stability of the sealing performance between the first sealing group 100 and the second sealing group 200.

[0169] like Figure 6 and Figure 8 As shown, in one embodiment, the sealing mechanism 1000 further includes a bearing 300, which is disposed between the first sealing group 100 and the second sealing group 200. The bearing 300 is beneficial to convert the sliding friction generated by the rotation of the first sealing group 100 relative to the second sealing group 200 into rolling friction, which is beneficial to improving the service life.

[0170] The first sealing assembly 100 and the second sealing assembly 200 are arranged radially; the radial direction is perpendicular to the axial direction. When the first sealing assembly 100 is not coaxial with the first rotating body 3000 due to machining errors, the radial arrangement of the first sealing assembly 100 and the second sealing assembly 200 allows for fine adjustment of the first sealing assembly 100 in the radial direction, so that the first sealing assembly 100 and the first rotating body 3000 are coaxially arranged, thereby ensuring the stability when they rotate synchronously.

[0171] like Figure 9 and Figure 5As shown, in one embodiment, the bearing 300 includes a bearing 300 seat and a plurality of balls 320. The bearing 300 seat is disposed on one of the surfaces of the first sealing group 100 and the second sealing group 200 that are axially facing each other. The bearing 300 seat has a plurality of movable grooves 311, which are spaced apart circumferentially along the first sealing group 100. The plurality of balls 320 are disposed in the movable grooves 311 in a one-to-one correspondence. The diameter of the movable groove 311 is larger than the diameter of the ball 320. The ball 320 protrudes from the movable groove 311 and abuts against the first sealing group 100 and the second sealing group 200 without the bearing 300 seat. By having the balls 320 roll in the movable grooves 311, the bearing 300 can convert the sliding friction of the first sealing group 100 relative to the second sealing group 200 during rotation into the rolling friction of the balls 320 in the movable grooves 311, which is beneficial to improving the service life of the first sealing group 100 and the second sealing group 200. Meanwhile, the diameter of the movable groove 311 is larger than the diameter of the ball 320, so that the ball 320 can have space to move radially in the movable groove 311, thereby giving the first sealing assembly 100 a radially movable space, so that the first sealing assembly 100 can finely adjust its position according to the axis of the first rotating body 3000 when it rotates, so that the first sealing assembly 100 and the first rotating body 3000 can rotate coaxially.

[0172] Optionally, such as Figure 8 and Figure 6 As shown, in this embodiment, there are two bearings 300, one of which is located between the first end face 1112a and the second end face 2121. The bearing 300 seat is located on the second end face 2121, and the ball bearing 320 abuts against the first end face 1112a. This allows the ball bearing 320 to roll relative to the first end face 1112a when the first rotating body 3000 drives the first rotating part 111 to rotate relative to the sleeve 210, thereby reducing friction. At the same time, when the cover 2000 is opened, the bearing 300 located between the first end face 1112a and the second end face 2121 can also serve as a load-bearing structure to support the weight of the first sealing assembly 100, the sleeve 210, and the fifth sealing element 130.

[0173] like Figure 9 and ​ As shown, another set of bearings 300 is disposed between the third end face 1121 and the fourth end face 2142. Specifically, the bearing 300 seat is disposed on the fourth end face 2142, and the ball bearing 320 abuts against the third end face 1121. When the second rotating part 112 rotates, the ball bearing 320 rolls relative to the third end face 1121 to reduce friction. When the cover 2000 presses against the first rotating body 3000, the bearing 300 located between the third end face 1121 and the fourth end face 2142 can bear the thrust of the first rotating body 3000 on the first sealing assembly 100.

[0174] Alternatively, the sealing ring 2141 can also be provided on the bearing 300 seat.

[0175] The two bearings 300 mentioned above can quickly switch the load direction during the lifting or lowering of the cover 2000, which helps to improve service life.

[0176] Meanwhile, when the first rotating part 111 and the second rotating part 112 adjust their positions radially, the ball 320 can move radially in the movable groove 311.

[0177] As the balls 320 roll circumferentially or move radially, friction generates a certain amount of metal debris, which cannot enter the slurry. The sealing groove 1123a and sealing protrusion 2141 forming the labyrinth seal help prevent metal debris from overflowing, avoid metal debris from falling into the slurry, and ensure slurry quality.

[0178] For example, the bearing 300 is a universal ball bearing 300, which facilitates the radial adjustment of the second rotating body 110.

[0179] Through the aforementioned sealing mechanism 1000, the main seal of the mixer is the seal between the first rotating body 3000 and the second rotating body 110, which is a static seal. The first sealing element 120 will contact the slurry at this point. The static seal helps prevent debris generated from the wear of the first sealing element 120 from contaminating the slurry, thus ensuring slurry quality. The secondary seal of the sealing mechanism 1000 is the seal between the second rotating body 110 and the sleeve 210, which is a dynamic seal. The second sealing element 220 between the second rotating body 110 and the sleeve 210 has a Y-shaped sealing structure. It abuts against the second rotating body 110 and the sleeve 210 respectively through two branches 222. This allows it to maintain a sealing state when the second rotating body 110 is radially fine-tuned. Furthermore, the debris generated by the wear of the second sealing element 220 is located on the outer periphery of the second rotating body 110, and this debris is isolated from the sealing area by the second rotating body 110.

[0180] In addition, the sealing mechanism 1000 is supported by two universal ball bearings 300, which has a simple structure. The debris generated by the friction of the universal ball bearings 300 is isolated by the labyrinth seal, which helps to prevent metal debris from contaminating the slurry.

[0181] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0182] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A sealing mechanism, characterized in that, The sealing mechanism is used at both ends along the axial direction to seal with the cover and the first rotating body having a sealing area, respectively, so that the cover and the sealing mechanism seal the sealing area; The sealing mechanism includes: A first sealing assembly is sealingly connected to the first rotating body, and the first sealing assembly is used to rotate synchronously with the first rotating body; and The second sealing assembly is sealed to the cover body, and the second sealing assembly is sleeved on the outer periphery of the first sealing assembly and sealed to the outer peripheral surface of the first sealing assembly. The first sealing assembly can rotate relative to the second sealing assembly.

2. The sealing mechanism according to claim 1, characterized in that, The first sealing assembly includes: The second rotating body is disposed in the second sealing assembly along the axial direction; A first seal is disposed between the surfaces of the second rotating body and the first rotating body that are opposite each other along the axial direction, and the first seal is configured to seal the second rotating body and the first rotating body along the axial direction.

3. The sealing mechanism according to claim 1 or 2, characterized in that, The sealing mechanism further includes: The bearing is disposed between the first sealing group and the second sealing group.

4. The sealing mechanism according to claim 3, characterized in that, The bearing includes: A bearing housing is disposed on one of the surfaces of the first sealing group and the second sealing group that are axially facing each other. The bearing housing is provided with a plurality of movable grooves, which are spaced apart circumferentially along the first sealing group. Multiple balls are provided, each corresponding to one of the multiple movable grooves, and are disposed in the movable grooves. The diameter of the movable groove is larger than the diameter of the ball. The ball protrudes from the movable groove and abuts against the first sealing group and the second sealing group without the bearing seat.

5. The sealing mechanism according to claim 4, characterized in that, The first sealing assembly has a first end face facing the cover body; The second sealing assembly has a second end face facing the first rotating body; The bearing is disposed between the first end face and the second end face.

6. The sealing mechanism according to claim 1 or 2, characterized in that, The first sealing assembly includes a second rotating body, the second rotating body comprising: The first rotating part is sealed to the first rotating body; The second rotating part is connected to the end of the first rotating part away from the first rotating body, and the second rotating part is sealed to the surface of the second sealing assembly facing the cover.

7. The sealing mechanism according to claim 6, characterized in that, The surface of the second rotating part facing the second sealing assembly along the axial direction is the third end face; The surface of the second sealing assembly facing the second rotating part along the axial direction is the fourth end face; The third end face and the fourth end face are respectively provided with a sealing groove or a sealing protrusion; The sealing groove and the sealing protrusion are inserted into each other along the axial direction. When the second rotating part rotates, the sealing protrusion and the sealing groove slide together.

8. The sealing mechanism according to claim 1 or 2, characterized in that, The second sealing assembly includes: A sleeve is fitted onto the outer circumferential surface of the first sealing assembly; The second sealing element is disposed between the outer peripheral surface of the first sealing assembly and the inner wall of the sleeve, and the second sealing element abuts against the outer peripheral surface of the first sealing assembly and the inner wall of the sleeve.

9. The sealing mechanism according to claim 8, characterized in that, The second seal includes: The main trunk extends along the said axial direction; Two branches are connected at an angle to one end of the main trunk. One of the two branches abuts against the outer peripheral surface of the first sealing assembly, and the other abuts against the inner wall of the sleeve. The two branches can move closer to or further away from each other in a radial direction, which is perpendicular to the axial direction.

10. A mixer, characterized in that, include: Cover; The sealing mechanism according to any one of claims 1-9, the sealing mechanism includes a first sealing group and a second sealing group, the second sealing group being sealed to the cover body; A first rotating body is provided with a sealing area for containing materials. A first sealing assembly is sealed to the first rotating body to seal the sealing area, and the first sealing assembly rotates synchronously with the first rotating body. Frame; as well as A lid-opening mechanism, comprising a drive member and a guide assembly, wherein the drive member is disposed on the frame; the guide assembly is disposed between the output end of the drive member and the frame, and the guide assembly is configured to provide guidance for the lid to move along the axial direction.

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