A dispersing mechanism and dry blender

Abstract

The utility model relates to material processing technical field discloses a kind of dispersion mechanism and dry method stirrer, through the innovative lock structure design, the industry problem of traditional dry method stirrer dispersion mechanism screw loosening leading to powder pollution is solved completely.Specifically, first dispersion component is innovated and adopts the design of wedge combination self-locking and locking screw, wedge mounting cavity and wedge block form radial extrusion force and self-locking force Double lock, and first screw is locked from top to bottom, even loosening only because gravity and stay in the hole corresponding to fixed disc and first dispersion disc, eliminate first screw fall into powder. This design not only eliminates the risk of non-clean component pollution, but also significantly improves the anti-loosening performance of the dispersion disc and the maintenance convenience, especially suitable for production scenes with strict purity requirements, with safety and economy, providing reliable technical support for clean production of dry method stirrer.

Description

Technical Field

[0001] This utility model relates to the field of material processing technology, and in particular to a dispersion mechanism and a dry mixer. Background Technology

[0002] A dry mixer is an industrial device used for mixing powder, granular or fibrous materials without the need for adding liquid media (or only a very small amount). Its core feature is that it achieves uniform mixing of materials directly through mechanical force, which is different from wet mixing that relies on liquids (such as water or solvents).

[0003] In dry mixers widely used in current industrial production, the assembly structure of their dispersing mechanisms generally suffers from a prominent and urgent problem: a significant defect in the locking structure. Specifically, in existing dry mixer dispersing mechanism assembly structures, the connection between the dispersing disc and the main shaft is achieved using a bottom-up screw locking method. During equipment operation, if the screws loosen, gravity causes them to fall directly into the powder being mixed. Since screws are not food-grade or meet specific production requirements for cleanliness, their fall inevitably contaminates the powder, affecting the quality and safety of the final product. In production areas with extremely high purity requirements, this contamination can have serious consequences.

[0004] Therefore, improving and innovating the technology of existing dry mixers has become an urgent and important task with significant practical implications in the current industrial production field.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides a dispersion mechanism and a dry mixer to solve the problem of loose screws contaminating powder.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] In a first aspect, this utility model provides a dispersing mechanism, including a main shaft, a bearing assembly, and a first dispersing component; wherein...

[0009] The bearing assembly and the first dispersion assembly are sequentially and spaced apart from each other on the main shaft;

[0010] The first dispersing component includes a fixed disk, a first dispersing disk, and a first screw;

[0011] The fixed plate is fitted onto the main shaft and has a wedge-shaped mounting cavity.

[0012] The first dispersion disk is provided with a wedge-shaped mounting block adapted to the wedge-shaped mounting cavity;

[0013] The wedge-shaped mounting block is inserted into the wedge-shaped mounting cavity to combine the first dispersing disk and the fixed disk into one unit;

[0014] The first screw passes through the fixed plate and the first dispersing plate from top to bottom in sequence, so as to lock the fixed plate and the first dispersing plate to the main shaft by radial extrusion force and wedge self-locking force.

[0015] Furthermore, the dispersing mechanism also includes a second dispersing component (4).

[0016] The second dispersing component is disposed on the main shaft and includes a transfer pad, a second dispersing disc, a second screw, and a third screw;

[0017] The transfer pad is fitted onto the main shaft;

[0018] The second screw is located between the transfer pad and the second dispersion disc, and passes through the transfer pad and the main shaft from bottom to top to lock the transfer pad to the main shaft;

[0019] The third screw passes through the transfer pad and the second dispersion disc from top to bottom to combine the transfer pad and the second dispersion disc into one unit.

[0020] Furthermore, in the dispersing mechanism, the fixed disk has a first through hole through which the first screw can pass;

[0021] The first dispersion disc has a first threaded hole that can be threadedly connected to the first screw.

[0022] Furthermore, in the dispersing mechanism, the transfer pad has a second through hole through which the second screw can pass;

[0023] The spindle has a second threaded hole that can be threadedly connected to the second screw.

[0024] Furthermore, in the dispersing mechanism, the transfer pad has a third through hole through which the third screw can pass;

[0025] The second dispersion disc has a third threaded hole that can be threadedly connected to the third screw.

[0026] Furthermore, in the dispersing mechanism, both the first threaded hole and the third threaded hole are blind holes.

[0027] Furthermore, in the dispersing mechanism, the bearing assembly includes an upper bearing cover, a lower bearing cover, a bearing bracket, a bearing body, a skeleton oil seal, and a lip seal;

[0028] The bearing bracket is disposed on the upper part of the main shaft;

[0029] The bearing body is located inside the bearing bracket and is fitted onto the spindle;

[0030] The upper end cover and the lower end cover of the bearing are respectively disposed on the upper and lower end faces of the bearing frame;

[0031] Both the lip seal and the skeleton seal are located inside the bearing housing and are sequentially fitted onto the spindle from top to bottom to form a double seal structure.

[0032] Furthermore, in the dispersing mechanism, the bearing assembly further includes an elastic retaining ring;

[0033] The elastic retaining ring is located inside the bearing bracket and is fitted onto the main shaft to form a labyrinth gap channel with the lower end cover of the bearing.

[0034] Furthermore, in the dispersion mechanism, the lower end cover of the bearing has an annular groove for collecting lubricating oil residue on the side facing the skeleton oil seal.

[0035] Furthermore, in the dispersing mechanism, the depth of the annular groove is ≥5mm.

[0036] Secondly, this utility model provides a dry mixer, including the dispersion mechanism as described in the first aspect above.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] This utility model provides a dispersion mechanism and a dry mixer that, through an innovative locking structure design, completely solves the industry problem of powder contamination caused by loose screws in the dispersion mechanism of traditional dry mixers. Specifically, the first dispersion component innovatively adopts a wedge-shaped design combined with self-locking and top-locking screws. The wedge-shaped mounting cavity and the wedge-shaped block form a dual locking mechanism of radial extrusion force and self-locking force. Furthermore, the first screw is locked from top to bottom, so even if it loosens, it will remain in the corresponding holes of the fixed disc and the first dispersion disc due to gravity, preventing the first screw from falling into the powder. This design not only eliminates the risk of contamination from non-clean parts but also significantly improves the anti-loosening performance and maintenance convenience of the dispersion disc. It is particularly suitable for production scenarios with stringent purity requirements, combining safety and economy, and providing a reliable technical guarantee for clean production in dry mixers.

[0039] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is one of the (three-dimensional) structural schematic diagrams of a dispersing mechanism provided in Embodiment 1 of this utility model;

[0042] Figure 2 This is the second (three-dimensional) structural schematic diagram of a dispersing mechanism provided in Embodiment 1 of this utility model;

[0043] Figure 3 This is a top view structural diagram of a dispersing mechanism provided in Embodiment 1 of this utility model;

[0044] Figure 4 This is a (front view) structural schematic diagram of a dispersing mechanism provided in Embodiment 1 of this utility model;

[0045] Figure 5 yes Figure 4 A cross-sectional view along the A-A' direction;

[0046] Figure 6 This is a schematic diagram of the structure of a dispersion mechanism (bearing assembly part) provided in Embodiment 1 of this utility model.

[0047] Figure label:

[0048] Main shaft 1, bearing assembly 2, first dispersion assembly 3, second dispersion assembly 4;

[0049] Bearing upper end cover 21, bearing lower end cover 22, bearing bracket 23, bearing body 24, skeleton oil seal 25, lip oil seal 26, elastic retaining ring 27, annular groove 28.

[0050] Fixed plate 31, first dispersing plate 32, first screw 33;

[0051] Transfer pad 41, second dispersion plate 42, second screw 43, third screw 44. Detailed Implementation

[0052] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0053] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0054] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0055] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0056] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0057] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0058] In this application, expressions such as "greater than", "less than", and "exceeding" are understood to exclude the stated number; expressions such as "above", "below", and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times", unless otherwise explicitly specified.

[0059] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0060] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0061] Example 1

[0062] In view of the deficiencies in the existing technology, the applicant, based on years of practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, has actively conducted research and innovation in order to create a technology that can solve the deficiencies in the existing technology. After continuous research, design, and repeated prototype production and improvement, this utility model with practical value has finally been created.

[0063] Please refer to Figure 1-5 This utility model embodiment provides a dispersing mechanism, including a main shaft 1, a bearing assembly 2, and a first dispersing assembly 3; wherein,

[0064] The bearing assembly 2 and the first dispersion assembly 3 are arranged at intervals on the main shaft 1 in a top-to-bottom order.

[0065] Specifically, the bearing assembly 2 is installed on the upper part of the main shaft 1, providing basic support for the stable operation of the entire dispersing mechanism; the first dispersing assembly 3 is located in the middle of the main shaft 1, undertaking the main material dispersing function; the components work together to ensure the efficient operation of the dispersing mechanism.

[0066] The first dispersion assembly 3 features an ingenious structural design, comprising a fixed plate 31, a first dispersion plate 32, and a first screw 33. The fixed plate 31 is securely mounted on the main shaft 1 in a fitted manner, and has a wedge-shaped mounting cavity at a specific location. This design provides precise positioning and a reliable connection foundation for subsequent component installation. The first dispersion plate 32 is equipped with a wedge-shaped mounting block that matches the wedge-shaped mounting cavity on the fixed plate 31. By precisely inserting the wedge-shaped mounting block into the wedge-shaped mounting cavity, the first dispersion plate 32 and the fixed plate 31 are initially joined, forming a relatively stable overall structure. Based on this, the first screw 33 plays a crucial locking role. It passes through the fixed plate 31 and the first dispersion plate 32 sequentially from top to bottom, and through the combined action of radial compression force and wedge self-locking force, firmly locks the fixed plate 31 and the first dispersion plate 32 onto the main shaft 1, ensuring that the first dispersion assembly 3 remains stable during equipment operation and will not loosen or fall off.

[0067] Radial compressive force refers to the radial compressive force exerted on the wall of the screw hole by the first screw 33 after it is screwed into the screw hole of the first dispersing disc 32 (this force is perpendicular to the axial direction of the first screw 33). This force can enhance the force applied to the main shaft 1 by the first dispersing disc 32 and the fixed disc 31, thereby making the contact surfaces of the first dispersing disc 32 and the fixed disc 31 with the main shaft 1 tightly fit together and form a stable connection;

[0068] The wedge self-locking force refers to the fact that the contact surface between the wedge mounting block and the wedge mounting cavity is designed as a wedge surface with a cone angle ≤ 5°. When the first screw 33 applies radial extrusion force, the wedge block generates a component force along the cone surface, forming a self-locking effect to prevent the dispersion disc from loosening due to centrifugal force or vibration when rotating at high speed.

[0069] The dispersion mechanism designed in this embodiment, through a series of innovative locking structure designs, successfully and thoroughly solves the long-standing industry problem of powder contamination caused by loose screws in the dispersion mechanism of traditional dry mixers. Specifically, this is reflected in the following aspects:

[0070] The first dispersing component 3 innovatively adopts a design combining a wedge-shaped self-locking mechanism with a locking screw. The ingenious cooperation between the wedge-shaped mounting cavity and the wedge-shaped block forms a dual locking mechanism of radial extrusion force and wedge self-locking force. This dual protection makes the connection between the first dispersing disc 32 and the fixed disc 31 more secure and reliable. At the same time, the first screw 33 adopts a top-down locking method. Even if it becomes loose during equipment operation, due to gravity, the first screw 33 will only stay in the corresponding hole of the fixed disc 31 and the first dispersing disc 32, and will not fall into the powder being stirred, thus effectively eliminating the possibility of the first screw 33 contaminating the powder.

[0071] This innovative design not only eliminates the risk of contamination of powder by non-clean components at the source, providing a strong guarantee for producing high-quality, high-purity products, but also significantly improves the anti-loosening performance of the dispersion disc, reducing the failure rate during equipment operation, lowering maintenance costs, and increasing production efficiency. At the same time, this design makes equipment maintenance more convenient, allowing operators to more easily inspect and repair the dispersion mechanism, saving maintenance time and labor costs. It is particularly suitable for production scenarios with extremely stringent purity requirements, combining high safety with good economic efficiency, providing reliable and advanced technical support for clean production of dry mixers, and possessing broad market application prospects and significant promotional value.

[0072] Please refer to this again. Figure 1-5 In one embodiment of this invention, the dispersing mechanism further includes a second dispersing component 4, which is disposed on the main shaft 1 and located at the lower part of the main shaft 1, and is used to further assist in completing the material dispersing operation.

[0073] The second dispersion assembly 4 also features an innovative structural design, consisting of a transfer pad 41, a second dispersion disk 42, a second screw 43, and a third screw 44. The transfer pad 41 is mounted on the main shaft 1 in a set, providing an intermediate transition and support platform for the installation of other components. The second screw 43 is located between the transfer pad 41 and the second dispersion disk 42, and its installation method involves passing through the transfer pad 41 and the main shaft 1 sequentially from bottom to top. This unique bottom-locking design reliably locks the transfer pad 41 onto the main shaft 1, ensuring the connection stability between the transfer pad 41 and the main shaft 1. The third screw 44 passes through the transfer pad 41 and the second dispersion disk 42 sequentially from top to bottom, employing a top-locking screw design concept to tightly integrate the transfer pad 41 and the second dispersion disk 42 into a single unit, enabling the second dispersion assembly 4 to maintain structural integrity and stability during operation.

[0074] It should be noted that the addition of the second dispersion component 4 greatly improves the dispersion effect of the dispersion mechanism on materials. In traditional dispersion mechanisms, due to the limitations of the structure and installation method of the dispersion disc, it is often difficult to achieve an ideal dispersion state for some highly viscous or finely granulated materials. The setting of the second dispersion component 4 increases the force points and action time of the material during the dispersion process, allowing the material to be more fully sheared and dispersed. At the same time, the newly added transfer pad 41 enables the design of the third screw 44 to lock onto the second dispersion disc 42 from top to bottom. It also adopts the design concept of the top-locking screw, fundamentally eliminating the risk of the third screw 44 falling into the powder. Although the transfer pad 41 is still connected to the main shaft 1 by the bottom-locking second screw 43, the double physical barrier structure formed by the second dispersion disc 42 and the transfer pad 41 is like a solid barrier, completely blocking the path of the second screw 43 falling into the powder, further ensuring the purity of the powder.

[0075] In one embodiment of this invention, the connection structure of each component in the dispersive mechanism is designed with extreme precision and rigor to ensure the stability and reliability of the entire mechanism during operation.

[0076] Specifically, regarding the connection structure of the first dispersing component 3, the fixed disk 31 has a first through hole precisely machined. The size of this first through hole matches the outer diameter of the first screw 33, providing a smooth passage for the first screw 33 to pass through the fixed disk 31 without obstruction, thus laying the foundation for subsequent fastening operations. Simultaneously, the first dispersing disk 32 has a corresponding first threaded hole with precise thread specifications, enabling a tight and reliable threaded connection with the threaded portion of the first screw 33. By having the first screw 33 pass through the first through hole of the fixed disk 31 and connect threadedly with the first threaded hole of the first dispersing disk 32, a stable connection is achieved between the fixed disk 31 and the first dispersing disk 32, ensuring that they work together as a whole to effectively disperse materials during equipment operation.

[0077] The connection structure of the second dispersion component 4 is also meticulously and rationally designed. A second through hole is provided on the transfer pad 41. The location and size of this second through hole have been precisely calculated to ensure that the second screw 43 can pass through smoothly. A second threaded hole is provided at the corresponding position (i.e., the bottom) on the main shaft 1. Its thread specification matches that of the second screw 43, allowing the second screw 43 to be threaded into the second threaded hole on the main shaft 1 after passing through the second through hole of the transfer pad 41. This securely locks the transfer pad 41 onto the main shaft 1, ensuring the overall stability of the second dispersion component 4.

[0078] In addition, a third through hole is provided on the transfer pad 41 to provide a path for the third screw 44 to pass through. A corresponding third threaded hole is provided on the second dispersion disk 42. The third screw 44 can pass through the third through hole of the transfer pad 41 and be threadedly connected to the third threaded hole of the second dispersion disk 42, thereby tightly combining the transfer pad 41 and the second dispersion disk 42 into one unit, so that the second dispersion assembly 4 can maintain the structural integrity and stability during operation.

[0079] It is worth mentioning that both the first and third threaded holes adopt a blind hole design. This blind hole structure has a unique and important advantage: during equipment operation, when using locking screws (i.e., the first screw 33 and the third screw 44) for connection, even if the screws loosen due to long-term operation, vibration, or other factors, the bottom of the blind hole restricts the screws from falling out of the threaded hole. This design effectively avoids the risk of screws falling into the powder being stirred, thus preventing contamination of the powder by unclean parts.

[0080] In traditional dry mixers, the dispersion mechanism suffers from insufficient bearing sealing performance. Specifically, traditional dry mixers typically use skeleton oil seals to seal the bearings. However, during actual production, the powder continuously erodes the skeleton oil seals. Under prolonged erosion, the skeleton oil seals are prone to wear and aging, leading to seal failure. Once the seal fails, the powder travels upwards along the main shaft and enters the bearing cavity. This powder entry disrupts the lubrication environment inside the bearing, increases friction during operation, accelerates bearing wear, shortens bearing life, and increases equipment maintenance costs and downtime.

[0081] Please refer to this again. Figure 5 and in conjunction with references Figure 6 In one specific embodiment provided in this example, the bearing assembly 2 has undergone innovative optimization design to effectively solve the problem of insufficient sealing performance of traditional bearings. The bearing assembly 2 has a complex structure and ingenious design, mainly composed of several key components such as the upper bearing cover 21, the lower bearing cover 22, the bearing bracket 23, the bearing body 24, the skeleton oil seal 25, and the lip seal 26.

[0082] The bearing bracket 23, serving as the supporting structure for the entire bearing assembly 2, is securely mounted on the upper part of the spindle 1, providing a solid foundation for the installation of other components. The bearing body 24 is the core component of the bearing assembly 2. It is precisely located within the bearing bracket 23 and fitted onto the spindle 1, undertaking the important task of supporting the rotation of the spindle 1 and reducing friction.

[0083] The upper end cover 21 and the lower end cover 22 of the bearing are respectively provided on the upper and lower end faces of the bearing frame 23. They act like two sturdy shields, which enclose and protect the bearing frame 23 and prevent external impurities from entering the bearing from the upper and lower ends of the bearing frame 23.

[0084] Crucially, both the lip seal 26 and the skeleton seal 25 are located within the bearing housing 23 and are sequentially fitted onto the main shaft 1 from top to bottom, forming a unique double-seal structure. The lip seal 26 features a unique lip design that allows for tight contact with the main shaft 1, effectively preventing leakage of powder and lubricating grease. Its material possesses good elasticity and wear resistance, maintaining stable sealing performance over long-term use. The skeleton seal 25 further enhances the sealing effect, working in conjunction with the lip seal 26 to form a robust sealing barrier. This double-seal structure design fully considers the complexity of the dry mixer's working environment. By leveraging the complementary advantages of two different types of seals, it significantly improves the sealing performance of the bearing assembly 2, effectively resisting the erosion and intrusion of powder, creating a clean and stable lubrication environment inside the bearing, thereby extending bearing life, reducing equipment maintenance costs and downtime, and improving production efficiency and product quality.

[0085] Please refer to this again. Figure 5-6 In one embodiment of this invention, the bearing assembly 2 is further optimized based on the original structure by adding a key component, the elastic retaining ring 27, to comprehensively improve the sealing performance and dust prevention capability of the bearing assembly.

[0086] From an overall structural perspective, the bearing assembly 2 is a complex and orderly system composed of multiple components working in concert. The elastic retaining ring 27 is cleverly positioned inside the bearing housing 23 and precisely fitted into a specific location on the spindle 1. Its installation position is not arbitrarily chosen but rather the result of rigorous design and precise calculations to ensure a perfect fit with the lower end cover 22 of the bearing.

[0087] A unique labyrinth gap channel is formed between the elastic retaining ring 27 and the lower end cover 22 of the bearing. This labyrinth gap channel design is ingenious, utilizing principles of fluid dynamics and powder movement trajectory. When the powder attempts to move upwards along the main axis, it enters this labyrinth gap channel. Inside the channel, the powder's direction of movement constantly changes, making its path tortuous and complex. Because the powder is subjected to inertial and frictional forces when changing direction, the combined effect of these forces significantly hinders its continued upward movement. Simultaneously, the special structure of the labyrinth gap channel allows some powder to deposit within the channel, further reducing the amount of powder entering the bearing cavity.

[0088] This design, which actively blocks the upward flow of powder into the bearing cavity, has significant advantages and importance. It cuts off the path for powder to enter the bearing cavity at its source, creating a clean and stable working environment inside the bearing. Compared to traditional single-seal methods, this labyrinth gap channel design has stronger active defense capabilities, intercepting powder before it approaches the core components of the bearing, effectively preventing damage to the internal lubrication environment and components.

[0089] More importantly, this design perfectly complements and synergizes with the aforementioned dual oil seal structure. The dual oil seal structure primarily relies on the tight fit between the lip seal 26 and the skeleton seal 25 to prevent the leakage of powder and lubricating grease through physical sealing. Meanwhile, the labyrinth gap channel formed by the elastic retaining ring 27 and the lower end cover 22 of the bearing actively blocks the upward movement of powder from another dimension. Together, they form a multi-layered, all-around sealing barrier. Even if a small amount of powder manages to breach the labyrinth gap channel, the dual oil seal structure can still effectively seal it, completely preventing the powder from entering the bearing cavity.

[0090] This comprehensive dust-proof design significantly improves the reliability and stability of bearing assembly 2. It effectively extends bearing life, reduces bearing wear and lubrication failure caused by dust intrusion, thereby lowering equipment maintenance costs and downtime. Simultaneously, it ensures the cleanliness of the bearing cavity, providing a strong guarantee for the long-term stable operation of the equipment.

[0091] In practical production applications of traditional dry mixers, the assembly structure of their dispersion mechanisms reveals a serious problem: lubrication contamination. This issue has a significant negative impact on product quality and equipment operational stability. Specifically, existing dry mixer dispersion mechanisms have obvious design flaws in their lubrication systems. During prolonged operation, lubricating oil and oil seals inevitably wear down, resulting in residue. However, current structures lack an effective directional collection mechanism to handle this residue.

[0092] During continuous operation, the residue from lubricating oil and oil seal wear is in a disordered state and will randomly scatter in various parts of the dispersing mechanism. Due to the working characteristics of dry mixers, these residues can easily mix into the powder being mixed. Once the powder is contaminated, its physical and chemical properties may change, leading to a significant decline in product quality and failing to meet the high quality standards required by relevant industries.

[0093] Meanwhile, some residues will accumulate on the bearing raceways under the influence of gravity or other factors. The bearing raceways are a critical part of the bearing's normal operation, and the precision and smoothness of their surface directly affect the bearing's performance. The accumulation of residues alters the surface condition of the bearing raceways, making the originally smooth raceways rough and increasing the resistance to lubricant flow. This not only affects the normal flow and even distribution of lubricant within the bearing, leading to insufficient lubrication in some areas, but also further exacerbates bearing wear. As wear intensifies, the bearing's operating precision decreases, generating abnormal noise and vibration, and may even lead to serious malfunctions such as bearing seizure, creating a vicious cycle that severely impacts the normal operation and service life of the equipment.

[0094] Please refer to this again. Figure 5-6 In one embodiment of this invention, an innovative improvement has been made to address the aforementioned lubrication contamination problem. An annular groove 28 for collecting lubricating oil residue is cleverly formed on the side of the lower bearing end cap 22 facing the skeleton oil seal 25. This design embodies profound scientific principles and engineering ingenuity.

[0095] When the equipment is running, the residue generated by the wear of lubricating oil and oil seals, under the influence of gravity and the airflow generated by the equipment's operation, first passes through the labyrinth gap channel formed by the elastic retaining ring 27 and the lower end cover 22 of the bearing. The labyrinth gap channel, through its unique tortuous structure, obstructs and guides the upward movement of the residue, causing most of it to change direction and fall downwards. Finally, this residue falls precisely into the annular groove 28. The annular groove 28 acts like a dedicated "garbage collection station," concentrating and collecting impurities that may contaminate the powder and affect bearing lubrication, preventing the random scattering and accumulation of impurities within the dispersion mechanism.

[0096] To ensure that the annular groove 28 can fully perform its collection function, its depth is strictly regulated, stipulating that the depth of the annular groove 28 is ≥5mm. This depth design is based on multiple considerations. On the one hand, sufficient depth ensures that the annular groove 28 has enough volume to accommodate lubricating oil residue generated over a certain period of time, preventing residue overflow due to insufficient volume. On the other hand, appropriate depth also ensures the structural stability of the annular groove 28 during equipment operation, preventing deformation due to long-term vibration and impact, thereby ensuring the long-term effectiveness of its collection function.

[0097] This innovative design effectively solves the lubrication contamination problem of the dispersion mechanism in traditional dry mixers. It not only prevents impurities from contaminating the powder and affecting product quality, but also ensures the cleanliness of the bearing interior, maintains good lubrication, extends bearing life, reduces equipment maintenance costs and downtime, improves production efficiency and product market competitiveness, and provides solid technical support for the stable operation and high-quality development of dry mixers.

[0098] Although this application frequently uses terms such as main shaft and first dispersion disk, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

[0099] Example 2

[0100] This utility model provides a dry mixer, including the dispersion mechanism as described in Embodiment 1 above.

[0101] By applying the dispersion mechanism described in Embodiment 1 to this dry mixer, the dry mixer can fully utilize the efficient dispersion capability of the dispersion mechanism during the material mixing process, ensuring that the material is fully and uniformly mixed, thereby improving the quality stability of the product.

[0102] Most importantly, the dispersing mechanism's excellent sealing performance and anti-contamination capabilities effectively prevent contamination of the mixed materials caused by screws, lubricating oil, and impurities, ensuring the purity and quality of the product. Furthermore, the stable operation of the dispersing mechanism reduces equipment failure rates, lowers maintenance costs and downtime, and improves production efficiency, bringing significant economic and social benefits to the company's production and operations.

[0103] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A dispersive mechanism, characterized in that, It includes a main shaft (1), a bearing assembly (2), and a first dispersion assembly (3); wherein, The bearing assembly (2) and the first dispersion assembly (3) are sequentially and alternately arranged on the main shaft (1); The first dispersing component (3) includes a fixed disk (31), a first dispersing disk (32), and a first screw (33); The fixed plate (31) is fitted onto the main shaft (1) and has a wedge-shaped mounting cavity; The first dispersion disk (32) is provided with a wedge-shaped mounting block adapted to the wedge-shaped mounting cavity; The wedge-shaped mounting block is inserted into the wedge-shaped mounting cavity to combine the first dispersing disk (32) and the fixed disk (31) into one unit; The first screw (33) passes through the fixed disk (31) and the first dispersion disk (32) from top to bottom, so as to lock the fixed disk (31) and the first dispersion disk (32) to the main shaft (1) by radial extrusion force and wedge self-locking force.

2. The dispersing mechanism according to claim 1, characterized in that, It also includes a second dispersion component (4); The second dispersing component (4) is disposed on the main shaft (1) and includes a transfer pad (41), a second dispersing disc (42), a second screw (43) and a third screw (44). The transfer pad (41) is fitted onto the main shaft (1). The second screw (43) is located between the transfer pad (41) and the second dispersion disc (42), and passes through the transfer pad (41) and the main shaft (1) from bottom to top, so as to lock the transfer pad (41) to the main shaft (1). The third screw (44) passes through the transfer pad (41) and the second dispersion disc (42) from top to bottom to combine the transfer pad (41) and the second dispersion disc (42) into one unit.

3. The dispersing mechanism according to claim 2, characterized in that, The fixed plate (31) has a first through hole through which the first screw (33) can pass; The first dispersion disc (32) has a first threaded hole that can be threadedly connected to the first screw (33).

4. The dispersing mechanism according to claim 3, characterized in that, The transfer pad (41) has a second through hole through which the second screw (43) can pass and a third through hole through which the third screw (44) can pass; The main shaft (1) has a second threaded hole that can be threadedly connected to the second screw (43); The second dispersion disc (42) has a third threaded hole that can be threadedly connected to the third screw (44).

5. The dispersing mechanism according to claim 4, characterized in that, Both the first threaded hole and the third threaded hole are blind holes.

6. The dispersing mechanism according to claim 1, characterized in that, The bearing assembly (2) includes an upper bearing cover (21), a lower bearing cover (22), a bearing bracket (23), a bearing body (24), a skeleton oil seal (25), and a lip seal (26). The bearing bracket (23) is disposed on the upper part of the main shaft (1); The bearing body (24) is located inside the bearing bracket (23) and is fitted onto the main shaft (1). The upper end cover (21) and the lower end cover (22) of the bearing are respectively disposed on the upper and lower end faces of the bearing frame (23); The lip seal (26) and the skeleton seal (25) are both located inside the bearing bracket (23) and are sequentially fitted onto the main shaft (1) from top to bottom to form a double seal structure.

7. The dispersing mechanism according to claim 6, characterized in that, The bearing assembly (2) also includes an elastic retaining ring (27); The elastic retaining ring (27) is located inside the bearing bracket (23) and is fitted onto the main shaft (1) to form a labyrinth gap channel with the lower end cover (22) of the bearing.

8. The dispersing mechanism according to claim 7, characterized in that, The lower end cap (22) of the bearing has an annular groove (28) for collecting lubricating oil residue on the side facing the skeleton oil seal (25).

9. The dispersing mechanism according to claim 8, characterized in that, The depth of the annular groove (28) is ≥5mm.

10. A dry mixer, characterized in that, Includes the distributed mechanism as described in any one of claims 1-9.

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