Blanking mechanism and powder-liquid mixing equipment

Abstract

The utility model relates to a blanking mechanism and powder-liquid mixing equipment, the blanking mechanism comprises a rotor and a wall scraping assembly, the wall scraping assembly comprises a base and a wall scraping part, the base is coaxially mounted on the rotor, the base is provided with a peripheral surface arranged around the axial direction of the rotor, and the wall scraping part is arranged on the peripheral surface. In the working process of the blanking mechanism, after powder enters the powder blanking cavity from the powder inlet, the wall scraping piece continuously stirs the powder near the cavity wall of the powder blanking cavity and scrapes away the powder attached to the cavity wall, and the powder falls smoothly. Moreover, the wall scraping piece can destroy a powder barrier interface, the pressure gradient change in the shell is smoother, operation and flowing of materials in the equipment are facilitated, and therefore the performance of the equipment is improved. Meanwhile, the wall scraping assembly of the wall scraping structure can stir the powder in the falling process of the powder, gas mixed in the powder is reduced, the cavitation phenomenon occurring in the later process is relieved, and the service life of the powder-liquid mixing equipment is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of powder-liquid mixing equipment, and in particular to a blanking mechanism and powder-liquid mixing equipment. Background Art

[0002] The slurrying process involves conveying powder and liquid to a powder-liquid mixing device for mixing and dispersion to produce a homogeneous slurry. This process is widely used in fields such as lithium battery slurry. The mixing process of conventional powder-liquid mixing equipment is roughly as follows: powder enters the powder drop area from the powder inlet of the powder-liquid mixing device, where it is transported by a rotating mixing mechanism to the powder-liquid mixing area to mix with the liquid. After long-term operation, powder particles tend to adhere to the inner walls of the powder drop area due to moisture, preventing the powder from falling smoothly. Furthermore, due to the physical properties of some powders, "bridges" may form during the flow process. If this "bridge" phenomenon is not broken, the powder will have difficulty falling. Utility Model Content

[0003] Based on this, the embodiments of the present application provide a dropping mechanism and a powder-liquid mixing device, which aim to help the powder fall more smoothly.

[0004] In a first aspect, an embodiment of the present application provides a blanking mechanism, the blanking mechanism comprising:

[0005] rotor; and

[0006] The scraper assembly comprises a base and a scraper. The base is coaxially mounted on the rotor. The base has an outer peripheral surface arranged axially around the rotor, and the scraper is arranged on the outer peripheral surface.

[0007] In some embodiments, the wall scraping assembly further includes an anti-accumulation member, which is located on a side of the base facing away from the rotor, and a projection of the anti-accumulation member along the axial direction at least partially falls within the range of the base.

[0008] In some embodiments, the wall scraping member includes a plurality of wall scraping wings, and the plurality of wall scraping wings are arranged on the outer peripheral surface at intervals around the axial direction;

[0009] All of the wall scraping wings are arranged around the anti-accumulation member, and the anti-accumulation member is connected between all of the wall scraping members.

[0010] In some embodiments, the radius of the outer peripheral surface is arranged to increase gradually along the axial direction toward the discharge side of the blanking mechanism.

[0011] In some embodiments, the wall scraper includes a spiral scraper bar, and the spiral scraper bar extends helically around the axial direction.

[0012] In some embodiments, an operating space is formed on one side of the base, and a mounting portion is provided on the base, and the base is fixedly connected to the rotor via the mounting portion;

[0013] The installation portion is located in the operation space.

[0014] In some embodiments, the wall scraper includes at least one wall scraper wing connected to the outer peripheral surface, the wall scraper wing includes an upper wing portion, one end of the upper wing portion in the axial direction is disposed on the base, and the other end is disposed higher than the base in the axial direction;

[0015] The upper wing portion has a first scraping surface for scraping the wall, and the distance from the first scraping surface to the axial direction is gradually reduced from the one end connected to the base to the other end.

[0016] In some embodiments, the wall scraping wing further includes a lower wing portion, the lower wing portion is connected to the upper wing portion, and the lower wing portion is arranged on the discharge side of the blanking mechanism compared to the upper wing portion;

[0017] The lower wing portion has a second scraping wall surface for scraping the wall, and the distance from the second scraping wall surface to the axial direction is equidistantly arranged from one end connected to the upper wing portion to the other end.

[0018] In some embodiments, the wall scraping wing further includes a connecting portion, and the upper wing portion and the lower wing portion are both connected to the outer peripheral surface via the connecting portion;

[0019] The connecting portion is arranged to intersect with both the upper wing portion and the lower wing portion.

[0020] In a second aspect, an embodiment of the present application provides a powder-liquid mixing device, comprising:

[0021] case;

[0022] impeller assembly; and

[0023] As described in the above embodiment, the impeller assembly and the blanking mechanism are both arranged in the housing, and the impeller assembly is coaxially mounted on the rotor and is located on one side of the scraping assembly.

[0024] The internal space of the housing is divided into a powder feeding chamber, a powder-liquid mixing chamber, and a pumping chamber which are sequentially connected along the axial direction of the rotor. The housing has a powder inlet connected to the powder feeding chamber, a liquid inlet connected to the powder-liquid mixing chamber, and a discharge port connected to the pumping chamber.

[0025] The scraping assembly is located in the powder feeding chamber, a part of the rotor is located in the powder feeding chamber, another part is located in the powder-liquid mixing chamber, and the remaining part is located in the pumping chamber. The scraping assembly scrapes off the powder attached to the cavity wall of the powder feeding chamber through its scraping parts.

[0026] In some embodiments, the impeller group includes a first impeller group, a second impeller group, and a pumping impeller arranged in sequence along the axial direction;

[0027] The first impeller group is arranged adjacent to the scraper assembly, and is used to transport the powder flowing out of the scraper assembly toward the second impeller group; the second impeller group is used to mix and disperse the powder and liquid passing through it to output slurry to the pumping impeller, and the pumping impeller is used to transport the slurry radially.

[0028] In some embodiments, the first impeller assembly includes a first pressure-feeding impeller, a first dispersing impeller, and a second pressure-feeding impeller sequentially arranged along the axial direction, the first pressure-feeding impeller being arranged adjacent to the wall scraping assembly, the first pressure-feeding impeller and the second pressure-feeding impeller being used to transport the powder toward the side where the second impeller assembly is located, and the first dispersing impeller being used to disperse the powder passing through it;

[0029] The second impeller group includes a mixing impeller and a second dispersing impeller arranged in sequence along the axial direction, the second dispersing impeller is arranged adjacent to the pumping impeller, the mixing impeller is used to mix powder and liquid, and the second dispersing impeller is used to disperse the slurry obtained after the powder and liquid are mixed by the mixing impeller.

[0030] In some embodiments, the powder feeding cavity has a conical cavity section, and the inner diameter of the conical cavity section is gradually increased along the axial direction toward the powder-liquid mixing cavity.

[0031] In some embodiments, there is a gap between the wall scraper and the cavity wall of the powder feeding cavity, and the size of the gap is 0.2mm to 5mm.

[0032] During operation, the aforementioned material drop mechanism and powder-liquid mixing equipment, after the powder enters the powder drop chamber from the powder inlet, uses a wall scraper to continuously stir the powder near the wall of the powder drop chamber and scrape away any powder adhering to the wall, allowing the powder to fall more smoothly. Furthermore, the wall scraper disrupts the powder barrier interface, creating a smoother pressure gradient within the housing, facilitating the movement and flow of materials through the equipment and thus improving equipment performance. Furthermore, the scraper structure and its components can stir the powder as it falls, reducing the amount of gas mixed within the powder, alleviating cavitation that occurs in the later stages of the process, and extending the service life of the powder-liquid mixing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0034] Figure 1 Schematic diagram of the structure of powder-liquid mixing equipment in some embodiments;

[0035] Figure 2 Schematic diagram of the assembly of the blanking mechanism and the impeller assembly of the powder-liquid mixing equipment of some embodiments;

[0036] Figure 3 Schematic diagram of the structure of the wall scraping assembly of some embodiments;

[0037] Figure 4 Schematic diagram of a powder barrier interface formed in a powder feeding cavity in some embodiments;

[0038] Figure 5 Schematic diagram of a wall scraping assembly destroying a powder barrier interface in some embodiments;

[0039] Figure 6 Schematic diagrams of the structures of wall scraping assemblies in other embodiments;

[0040] Figure 7 for Figure 6 Another orientation view of the scraper assembly shown;

[0041] Figure 8 for Figure 1 The partial structural diagram of the powder-liquid mixing equipment shown.

[0042] The accompanying drawings in the specific implementation manner are as follows:

[0043] 1000, powder-liquid mixing equipment; 100, blanking mechanism; Z, axial direction; 10, impeller assembly; 11, first impeller assembly; 11a, first pressure-feeding impeller; 11b, first dispersion impeller; 11c, second pressure-feeding impeller; 12, second impeller assembly; 12a, mixing impeller; 12b, second dispersion impeller; 13, pumping impeller; 20, scraper assembly; 21, base; 21a, outer peripheral surface; 21b, mounting portion; 22, scraper Wall part; 22a, scraping wing; a1, upper wing part; m1, first scraping wall surface; a2, lower wing part; m2, second scraping wall surface; a3, connecting part; 22b, spiral scraping strip; 23, anti-accumulation part; k, operating space; 200, shell; Q1, powder feeding chamber; q1, conical chamber section; q2, vertical chamber section; Q2, powder-liquid mixing chamber; Q3, pumping chamber; 201, powder inlet; 202, liquid inlet; 203, discharge port. DETAILED DESCRIPTION

[0044] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0045] In the description of the present application, it should be understood that, if any, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] Furthermore, if used, the terms "first" and "second," if present, are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0047] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connected," and "fixed" should be interpreted broadly. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0048] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0049] It should be noted that, if present, when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0050] The present application provides a material dropping mechanism and a powder-liquid mixing device to address the problem that powder in a powder-liquid mixing device easily sticks to the cavity wall, affecting the falling of the powder.

[0051] The powder-liquid mixing device mentioned in the embodiments of the present application is a device for mixing and evenly dispersing powder and liquid to obtain a slurry with uniform texture. Figure 1 The powder-liquid mixing device 1000 includes a housing, a feeding mechanism 100, and an impeller assembly 10. The feeding mechanism 100 and the impeller assembly 10 are coaxially arranged and can rotate synchronously. The interior space of the housing 200 is divided into a powder feeding chamber Q1, a powder-liquid mixing chamber Q2, and a pumping chamber Q3, which are connected in sequence. The housing 200 has a powder inlet 201 connected to the powder feeding chamber Q1, a liquid inlet 202 connected to the powder-liquid mixing chamber Q2, and a discharge port 203 connected to the pumping chamber Q3. The feeding mechanism 100 and the impeller assembly 10 are both disposed within the housing 200 and are used to transport powder entering the powder feeding chamber Q1 from the powder inlet 201 to the powder-liquid mixing chamber Q2. The impeller assembly 10 mixes and disperses the powder with liquid entering from the liquid inlet 202 in the powder-liquid mixing chamber Q2, and then transports the mixed and dispersed slurry out of the pumping chamber Q3 through the discharge port 203.

[0052] The blanking mechanism 100 is described in detail below.

[0053] Please refer to Figure 2 and Figure 3According to some embodiments of the present application, the blanking mechanism 100 provided in the embodiments of the present application includes a rotor and a scraper assembly 20. The scraper assembly 20 includes a base 21 and a scraper member 22. The base 21 is coaxially mounted on the rotor. The base 21 has an outer peripheral surface 21a arranged around the axial direction Z of the rotor, and the scraper member 22 is arranged on the outer peripheral surface 21a.

[0054] The rotor is a structure capable of rotating about the axial direction Z. The base 21 is coaxial with the rotor and can rotate synchronously with the rotor. Specifically, the scraper assembly 20 is mounted on one end of the rotor via its base 21. The base 21 has an outer circumferential surface 21a disposed about the axial direction Z of the rotor. This outer circumferential surface 21a can be, but is not limited to, a circular surface, a conical surface, or other rotating surface. The scraper 22 is disposed on this outer circumferential surface 21a and can rotate synchronously with the base 21 and the rotor. The scraper 22 can be integrally disposed on the outer circumferential surface 21a or assembled thereto.

[0055] In actual use, the rotor's axial direction Z is vertically arranged, and the scraper assembly 20 is disposed within the powder feeding chamber Q1. Its scraper member 22 is in contact with the chamber wall of the powder feeding chamber Q1 or is arranged with a gap therebetween. If the scraper member 22 is in contact with the chamber wall of the powder feeding chamber Q1, the scraper member 22 can be made of a material that is less abrasive to the chamber wall, such as silicone or rubber.

[0056] When the above-described material discharging mechanism 100 is applied to the powder-liquid mixing apparatus 1000, the entire material discharging mechanism 100 rotates about the rotor's axial direction Z. After the powder enters the powder discharging chamber Q1 through the powder inlet 201, the wall scraper 22 continuously stirs the powder near the wall of the powder discharging chamber Q1 and scrapes away any powder adhering to the wall, allowing the powder to fall more smoothly.

[0057] It is worth adding that when the blanking mechanism 100 is applied to the powder-liquid mixing device 1000, the impeller assembly 10 is coaxially mounted on the rotor. When the rotor rotates at high speed, a negative pressure environment that gradually changes from top to bottom is formed inside the shell 200 of the powder-liquid mixing device 1000, and this negative pressure environment causes the material to flow downward. Figure 4 and Figure 5 It is understood that the powder inlet 201 generates positive pressure to transport the powder downward. When the powder enters the powder discharge chamber Q1, a transition zone is formed from positive pressure to negative pressure. This transition zone forms an arched powder barrier interface with a high center and low edges (bridging phenomenon). The powder barrier interface affects the falling of the powder. When the rotor rotates, the scraper assembly 20 of the discharge mechanism 100 can disturb the air pressure, destroy the powder barrier interface, and break up the powder at the powder barrier interface, so that the pressure gradient in the shell 10 changes smoothly from positive pressure to negative pressure, and the powder can enter the lower powder-liquid mixing chamber Q2 more smoothly.

[0058] After the powder enters the lower channel, the pressure gradient of the powder feeding chamber Q1 and the powder-liquid mixing chamber Q2 and pumping chamber Q3 below changes smoothly, which is conducive to the operation and flow of the material in the equipment, thereby improving the performance of the equipment.

[0059] In addition, the scraper assembly 20 can stir the powder as it falls, reduce the gas mixed in the powder, alleviate the cavitation phenomenon that occurs in the later process, and extend the service life of the powder-liquid mixing equipment 1000.

[0060] In some embodiments, please refer to Figure 3 The scraper assembly 20 further includes an anti-accumulation member 23 , which is located on one side of the base 21 , and a projection of the anti-accumulation member 23 along the axial direction Z at least partially falls within the range of the base 21 .

[0061] Typically, the scraper 22 extends radially out of the rotor base 21 to contact or leave a gap with the wall of the powder feeding chamber Q1 . When the powder falls from above the base 21 , it tends to accumulate on the base 21 .

[0062] The anti-accumulation member 23 can be directly connected to the base 21, or it can be connected to the scraper 22. The connection method can be an integrated connection or an assembled connection. The anti-accumulation member 23 is arranged above the base 21, and the projection of the anti-accumulation member 23 along the axial direction Z of the rotor at least partially falls within the range of the base 21. In the process of rotating along the axial direction Z of the rotor, the anti-accumulation member 23 will scatter the powder that falls directly above the base 21, so that it is thrown to the inner wall side of the cavity under the action of centrifugation, reducing the accumulation of powder on the base 21, preventing the powder from forming a dead corner of accumulation directly above the base 21, and making the powder fall more smoothly.

[0063] Typically, the wall scraper 22 and the anti-accumulation member 23 can be rod-shaped or plate-shaped. When both are plate-shaped, the plate thickness direction can be arranged horizontally to reduce the obstruction to the falling of the powder.

[0064] In some embodiments, please refer to Figure 3 The scraper 22 includes a plurality of scraper wings 22a, which are arranged on the outer peripheral surface 21a at intervals around the above-mentioned axial direction Z. All scraper wings 22a are arranged around the anti-accumulation member 23, and the anti-accumulation member 23 is connected between all scraper members 22.

[0065] Typically, to balance the rotational motion of the rotor, all scraper wings 22a are arranged symmetrically with respect to the rotor's axial direction Z. The anti-accumulation member 23 connects all scraper wings 22a together to prevent the scraper wings 22a from vibrating due to centrifugal force when the blanking mechanism 100 rotates at high speed, thereby preventing eccentric motion and vibration noise.

[0066] In a specific embodiment, if Figure 3As shown, two scraping wings 22 a are provided, and the two scraping wings 22 a are symmetrically arranged relative to the axial direction Z of the rotor, and the anti-accumulation member 23 is horizontally connected between the two scraping wings 22 a.

[0067] Of course, in other embodiments, only one scraping wing 22a may be provided. Preferably, the scraping wing 22a is substantially in the form of a thin plate, and its thickness direction is substantially horizontal.

[0068] In some embodiments, please refer to Figure 3 and Figure 6 The radius of the outer peripheral surface 21a is gradually increased along the axial direction Z toward the discharge side of the blanking mechanism 100.

[0069] The blanking mechanism 100 has a feed side and a discharge side. Powder flows from the feed side through the blanking mechanism 100 and then out of the blanking mechanism 100 through the discharge side. In actual use, powder flows from top to bottom, and the discharge side of the blanking mechanism 100 refers to the lower side thereof. The radius of the outer peripheral surface 21a increases toward the blanking side along the axial direction Z, and the outer peripheral surface 21a has a conical shape with a smaller upper end and a larger lower end. When the powder flows from top to bottom, powder accumulated on the base 21 can flow downward along the outer peripheral surface 21a. This reduces the accumulation of powder on the base 21, allowing the powder to fall more smoothly.

[0070] In some embodiments, please refer to Figure 6 and Figure 7 The wall scraping member 22 includes a spiral scraping strip 22b, which extends spirally around the above-mentioned axial direction Z.

[0071] The spiral scraper 22b can be in contact with or spaced from the wall of the powder feeding chamber Q1. The spiral scraper 22b rotates with the base 21. During rotation, it not only stirs the powder and scrapes off any adherence to the chamber wall, but also guides powder close to the chamber wall to spiral downward, fully breaking up any agglomerated powder and facilitating subsequent mixing of the powder and liquid.

[0072] Specifically, the anti-accumulation member 23 can be connected to the spiral scraper 22 b. The spiral scraper 22 b can be arranged on the scraper wing 22 a or directly on the base 21 .

[0073] In some embodiments, please refer to Figure 3 An operating space k is formed on one side of the base 21. A mounting portion 21b is provided on the base 21. The base 21 is fixedly connected to the rotor via the mounting portion 21b. The mounting portion 21b is located in the operating space k.

[0074] The mounting portion 21b can be, but is not limited to, a fastener such as a bolt or latch. The base 21 is assembled to the rotor via the mounting portion 21b. The operating space k is used to operate a tool such as a wrench to install the mounting portion 21b, facilitating assembly and disassembly of the scraper assembly 20 from the rotor.

[0075] Alternatively, the operating space k is located on a side of the base 21 corresponding to the feeding side of the blanking mechanism 100 .

[0076] In other embodiments, please refer to Figure 3 The scraper 22 includes at least one scraper wing 22a connected to the outer peripheral surface 21a. The scraper wing 22a includes an upper wing portion a1. One end of the upper wing portion a1 in the axial direction Z is disposed on the base 21, and the other end is disposed higher than the base 21 in the axial direction Z. The upper wing portion a1 has a first scraper surface m1 for scraping the wall. The distance from the first scraper surface m1 to the axial direction Z decreases from one end connected to the base 21 to the other end.

[0077] One axial end of the upper wing portion a1 is disposed on the base 21 , including cases where the one axial end is directly connected to the base 21 and also including cases where the one axial end is indirectly connected to the base 21 .

[0078] The upper wing a1 is arranged higher than the base 21 in the axial direction Z of the rotor. When in use, the horizontal height of the other axial end of the upper wing a1 is higher than the horizontal height of the base 21. At this time, the upper wing a1 is arranged closer to the powder inlet 201 than the base 21. The upper wing a1 first contacts the powder and, during the rotation process, uses centrifugal force to throw the powder toward the cavity wall, reducing the powder falling toward the base 21, thereby reducing the powder accumulated on the base 21.

[0079] The distance from the first scraping wall surface m1 to the rotor axial direction Z is gradually reduced from one end of the connection base 21 to the other end, so that the upper wing portion a1 and the powder barrier interface are in an arched shape with a high middle and low edges, which better matches and makes it easier to destroy the powder barrier.

[0080] Moreover, in practical application, combined with Figure 8 It is understood that the section of the powder feeding cavity Q1 close to the powder inlet 201 is the conical cavity section q1. At this time, the shape of the upper wing a1 is more adapted to the shape of the conical cavity section q1, and the powder scraping effect of the conical cavity section q1 is better and more uniform.

[0081] In some embodiments, please refer to Figure 3 The scraping wing 22a further includes a lower wing portion a2, which is connected to the upper wing portion a1 and is located closer to the discharge side of the blanking mechanism 100 than the upper wing portion a1. The lower wing portion a2 has a second scraping surface m2 for scraping the wall. The distance from the second scraping surface m2 to the axial direction Z is equidistant from one end connected to the upper wing portion a1 to the other end.

[0082] Continue to refer to Figure 8 The powder feeding chamber Q1 also includes a vertical chamber section q2, which is located below the conical chamber section q1. Typically, the vertical chamber section q2, the powder-liquid mixing chamber Q2 below it, and the pumping chamber Q3 all extend in a cylindrical shape. This allows for a smoother pressure gradient as the powder flows from the powder feeding chamber Q1 to the powder-liquid mixing chamber Q2, facilitating powder flow.

[0083] The lower wing a2 extends into the vertical cavity section q2, scraping powder off the walls of the vertical cavity section q2, reducing its adhesion and enhancing its drop. The distance from the second scraping surface m2 of the lower wing a2 to the axial direction Z is equidistant from the end connecting to the upper wing a1 to the other end. This means that the lower wing a2 is positioned approximately vertically, better matching the shape of the vertical cavity section q2 and providing enhanced scraping efficiency.

[0084] In a specific embodiment, if Figure 6 and Figure 7 As shown, the wall scraping member 22 includes a wall scraping wing 22a and a spiral scraping strip 22b, and the spiral scraping strip 22b is connected to both the upper wing portion a1 and the lower wing portion a2.

[0085] In some embodiments, please refer to Figure 3 and Figure 6 The scraping wing 22a further includes a connecting portion a3, and the upper wing portion a1 and the lower wing portion a2 are connected to the outer peripheral surface 21a via the connecting portion a3. The connecting portion a3 is arranged to intersect with both the upper wing portion a1 and the lower wing portion a2.

[0086] At this time, the upper wing portion a1, the lower wing portion a2 and the connecting portion a3 are intersected, and the scraping wing 22a formed by the three together has a more stable and firm structure, which can reduce the probability of the scraping wing 22a vibrating when the scraping assembly 20 rotates at high speed.

[0087] The present application also provides a powder-liquid mixing device 1000, comprising a housing 200, an impeller assembly 10, and the blanking mechanism 100 described in the above embodiment. The impeller assembly 10 and blanking mechanism 100 are disposed within the housing 200, with the impeller assembly 10 coaxially mounted to the rotor and located on one side of a wall scraper assembly 20. The interior of the housing 200 is divided into a powder discharge chamber Q1, a powder-liquid mixing chamber Q2, and a pumping chamber Q3, which are sequentially connected along the rotor's axial direction Z. The housing 200 also includes a powder inlet 201 connected to the powder discharge chamber Q1, a liquid inlet 202 connected to the powder-liquid mixing chamber Q2, and a discharge port 203 connected to the pumping chamber Q3. The wall scraper assembly 20 is located in the powder discharge chamber Q1, with a portion of the impeller assembly 10 located in the powder discharge chamber Q1, another portion in the powder-liquid mixing chamber Q2, and the remaining portion in the pumping chamber Q3. The wall scraper assembly 20 uses its wall scraper 22 to scrape away powder adhering to the walls of the powder discharge chamber Q1. The powder-liquid mixing device 1000 has the beneficial effects mentioned above, which will not be described in detail here.

[0088] The impeller assembly 10 includes multiple impellers that are coaxially arranged and capable of synchronous rotation. When the material discharging mechanism 100 is applied to a powder mixing device, a portion of the impellers is located in the powder discharging chamber Q1, used to transport the powder in the powder discharging chamber Q1 toward the powder-liquid mixing chamber Q2. Another portion of the impellers is located in the powder-liquid mixing chamber Q2, used to mix and disperse the powder and liquid in the powder-liquid mixing chamber Q2. The remaining impellers are located in the pumping chamber Q3, used to discharge the mixed and dispersed slurry out of the powder mixing device through the discharge port 203.

[0089] It is understood that the impeller has a stator and a plurality of blades arranged around the stator, and the stators of each impeller are coaxially mounted on the rotor to achieve coaxial rotation of the multiple impellers. When the blades rotate with the stator, they can convey, mix and / or disperse materials.

[0090] In some embodiments, please refer to Figure 2 The impeller assembly 10 includes a first impeller assembly 11, a second impeller assembly 12, and a pumping impeller 13, which are arranged in sequence along the axial direction Z. The first impeller assembly 11 is located adjacent to the scraper assembly 20 and is used to convey the powder flowing out of the scraper assembly 20 toward the second impeller assembly 12. The second impeller assembly 12 is used to mix and disperse the powder and liquid passing through it to output slurry to the pumping impeller 13, which is used to convey the slurry in the radial direction.

[0091] In actual use, the first impeller assembly 11 is disposed within the powder discharge chamber Q1 of the housing 200 and is used to transport the powder in the powder discharge chamber Q1 to the powder-liquid mixing chamber Q2. The second impeller assembly 12 is disposed within the powder-liquid mixing chamber Q2 of the housing 200 and is used to mix and disperse the powder and liquid in the powder-liquid mixing chamber Q2 to obtain a slurry with a relatively uniform texture. The pumping impeller 13 is disposed within the pumping chamber Q3 of the housing 200 and discharges the homogenized slurry discharged from the powder-liquid mixing chamber Q2 out of the housing 200 through the discharge port 203 of the housing 200 for entry into the next process.

[0092] Specifically, the pumping impeller 13 is used to transport the slurry in a radial direction, which is substantially perpendicular to the axial direction Z of the rotor, and the discharge port 203 is substantially arranged on the radial side of the housing 200 .

[0093] In this way, through the combined action of the first impeller group 11, the second impeller group 12 and the pumping impeller 13, the powder and the liquid are mixed, and a slurry with a relatively uniform texture is output.

[0094] Specifically in the embodiment, refer to Figure 2The first impeller group 11 includes a first pressure-feeding impeller 11a, a first dispersing impeller 11b and a second pressure-feeding impeller 11c arranged in sequence along the axial direction Z. The first pressure-feeding impeller 11a is arranged adjacent to the scraping assembly 20. The first pressure-feeding impeller 11a and the second pressure-feeding impeller 11c are used to transport the powder toward the side where the second impeller group 12 is located. The first dispersing impeller 11b is used to disperse the powder passing through itself.

[0095] The first and second compression impellers 11a and 11c can drive the material flowing through them from one end of the axial direction Z to the other. It is understood that during rotation, the first and second compression impellers 11a and 11c can provide a certain stirring effect on the material flowing through them. The specific structure of the first and second compression impellers 11a and 11c is not limited herein and can be selected by those skilled in the art.

[0096] When the first dispersing impeller 11b rotates, it can disperse the agglomerates in the powder flowing through it into small particles, thereby reducing the agglomeration of the powder entering the powder-liquid mixing chamber Q2 and improving the powder-liquid mixing effect.

[0097] Specifically in the embodiment, refer to Figure 2 The second impeller group 12 includes a mixing impeller 12a and a second dispersing impeller 12b arranged in sequence along the axial direction Z. The second dispersing impeller 12b is arranged adjacent to the pumping impeller 13. The mixing impeller 12a is used to mix powder and liquid, and the second dispersing impeller 12b is used to disperse the slurry obtained after the powder and liquid are mixed by the mixing impeller 12a.

[0098] The mixing impeller 12a is used to preliminarily mix the powder transported from the powder falling chamber and the liquid entering from the liquid inlet 202 of the shell 200, and the second dispersing impeller 12b is used to disperse the preliminarily mixed slurry to reduce agglomerates in the slurry and make the slurry texture more uniform.

[0099] Regarding the specific structures of the mixing impeller 12a, the first dispersing impeller 11b, and the second dispersing impeller 12b, those skilled in the art can make conventional selections and designs, which are not limited here.

[0100] Specifically, a plurality of second dispersing impellers 12b may be provided, and the plurality of second dispersing impellers 12b are sequentially arranged adjacent to each other along the rotor axial direction Z. In this way, the slurry can be dispersed multiple times by the plurality of second dispersing impellers 12b, and a slurry with a more uniform texture can be obtained.

[0101] In some embodiments, reference Figure 6 and Figure 7 The powder feeding cavity Q1 has a conical cavity section q1, and the inner diameter of the conical cavity section q1 is gradually increased along the axial direction Z toward the powder-liquid mixing cavity Q2.

[0102] The upper end of the conical cavity section q1 is a small-diameter end, and the lower end is a large-diameter end. When the radius of the outer peripheral surface 21a is gradually increased along the axial direction Z toward the discharge side of the blanking mechanism 100, that is, the outer peripheral surface 21a is in a conical shape with a small upper end and a large lower end. Under the joint guidance of the conical cavity section q1 and the outer peripheral surface 21a, the powder falling effect is better.

[0103] In some embodiments, reference Figure 8 There is a gap between the scraper 22 and the wall of the powder feeding chamber Q1, and the size of the gap is 0.2mm to 5mm.

[0104] The gap t1 between the first scraping surface m1 and the wall of the tapered cavity segment q1 can be between 0.2 mm and 5 mm. The gap t2 between the second scraping surface m2 and the wall of the vertical cavity segment q2 can be between 0.2 mm and 5 mm. Specifically, t1 and t2 can be 0.2 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, and 5 mm.

[0105] Of course, when the wall scraper 22 includes the spiral scraper bar 22b, the gap between the spiral scraper bar 22b and the cavity wall of the powder feeding cavity Q1 can also be between 0.2 mm and 5 mm.

[0106] It is understandable that the selected value of the gap between the scraper 22 and the wall of the powder feeding chamber Q1 varies depending on the inner diameter of the shell 200 and the maximum rotation diameter of the scraper 22. Generally speaking, the larger the maximum rotation diameter, the larger the gap.

[0107] In one embodiment of the present application, a powder-liquid mixing device 1000 includes a rotor, a scraper assembly 20, and an impeller assembly 10. The scraper assembly 20 includes the aforementioned base 21, scraper 22, and anti-accumulation member 23. The impeller assembly 10 includes the aforementioned first pressure impeller 11a, first dispersing impeller 11b, second pressure impeller 11c, mixing impeller 12a, second dispersing impeller 12b, and pumping impeller 13. The general mixing process of the powder-liquid mixing device 1000 is as follows:

[0108] The material discharging mechanism 100 rotates at high speed about the aforementioned axial direction Z. The powder enters the powder discharging chamber Q1 from the feed port of the housing 200 and first contacts the wall scraper assembly 20. The anti-accumulation member 23 agitates the powder while preventing it from accumulating above the base 21. Simultaneously, the powder, stirred and swirled by the wall scraper 22, flows downward along the walls of the powder discharging chamber Q1. It is then accelerated by the first pressure impeller 11a and conveyed to the first dispersing impeller 11b for dispersion. It is then accelerated by the second pressure impeller 11c and flows toward the powder-liquid mixing chamber Q2.

[0109] The powder reaches the powder-liquid mixing chamber Q2 and is initially mixed with the liquid entering from the liquid inlet 202 at the mixing impeller 12a to form a slurry. The slurry then flows through the second dispersing impeller 12b, which further disperses the agglomerates in the slurry to obtain a slurry with a relatively uniform texture.

[0110] Finally, the slurry with a relatively uniform texture flows toward the discharge port 203 of the housing 200 under the pumping of the pumping impeller 13 .

[0111] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0112] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A blanking mechanism (100), characterized in that: The blanking mechanism (100) comprises: rotor; and The scraper assembly (20) comprises a base (21) and a scraper member (22), wherein the base (21) is coaxially mounted on the rotor; the base (21) has an outer peripheral surface (21a) arranged around the axial direction (Z) of the rotor, and the scraper member (22) is arranged on the outer peripheral surface (21a).

2. The blanking mechanism (100) according to claim 1, characterized in that: The wall scraping assembly (20) further includes an anti-accumulation member (23), which is located on one side of the base (21), and a projection of the anti-accumulation member (23) along the axial direction (Z) at least partially falls within the range of the base (21).

3. The blanking mechanism (100) according to claim 2, characterized in that: The wall scraping member (22) includes a plurality of wall scraping wings (22a), and the plurality of wall scraping wings (22a) are arranged on the outer peripheral surface (21a) at intervals around the axial direction (Z); All of the wall scraping wings (22a) are arranged around the anti-accumulation member (23), and the anti-accumulation member (23) is connected between all of the wall scraping members (22).

4. The blanking mechanism (100) according to claim 1, characterized in that: The radius of the outer peripheral surface (21a) is arranged to increase gradually along the axial direction (Z) toward the discharge side of the blanking mechanism (100).

5. The blanking mechanism (100) according to claim 1, characterized in that: The wall scraping member (22) comprises a spiral scraping strip (22b), and the spiral scraping strip (22b) extends in a spiral shape around the axial direction (Z).

6. The blanking mechanism (100) according to claim 1, characterized in that: An operating space (k) is formed on one side of the base (21), a mounting portion (21b) is provided on the base (21), and the base (21) is fixedly connected to the rotor via the mounting portion (21b); The mounting portion (21b) is located in the operating space (k).

7. The blanking mechanism (100) according to any one of claims 1 to 6, characterized in that: The scraper member (22) includes at least one scraper wing (22a) connected to the outer peripheral surface (21a), the scraper wing (22a) includes an upper wing portion (a1), one end of the upper wing portion (a1) in the axial direction (Z) is arranged on the base (21), and the other end is arranged higher than the base (21) in the axial direction (Z); The upper wing portion (a1) has a first scraping surface (m1) for scraping the wall, and the distance from the first scraping surface (m1) to the axial direction (Z) is gradually reduced from the one end connected to the base (21) to the other end.

8. The blanking mechanism (100) according to claim 7, characterized in that: The wall scraping wing (22a) further includes a lower wing portion (a2), the lower wing portion (a2) is connected to the upper wing portion (a1), and the lower wing portion (a2) is arranged closer to the discharge side of the blanking mechanism (100) than the upper wing portion (a1); The lower wing portion (a2) has a second scraping surface (m2) for scraping the wall, and the distance between the second scraping surface (m2) and the axial direction (Z) is equidistantly arranged from one end connected to the upper wing portion (a1) to the other end.

9. The blanking mechanism (100) according to claim 8, characterized in that: The wall scraping wing (22a) further includes a connecting portion (a3), and the upper wing portion (a1) and the lower wing portion (a2) are both connected to the outer peripheral surface (21a) via the connecting portion (a3); The connecting portion (a3) ​​is arranged to intersect with both the upper wing portion (a1) and the lower wing portion (a2).

10. A powder-liquid mixing device (1000), characterized in that: include: Housing (200); Impeller assembly (10); and The blanking mechanism (100) according to any one of claims 1 to 9, wherein the impeller assembly (10) and the blanking mechanism (100) are arranged in the housing (200), and the impeller assembly (10) is coaxially mounted on the rotor and located on one side of the scraper assembly (20); The internal space of the housing (200) is divided into a powder feeding chamber (Q1), a powder-liquid mixing chamber (Q2), and a pumping chamber (Q3) which are sequentially connected and arranged along the axial direction (Z) of the rotor. The housing (200) has a powder inlet (201) connected to the powder feeding chamber (Q1), a liquid inlet (202) connected to the powder-liquid mixing chamber (Q2), and a discharge port (203) connected to the pumping chamber (Q3). The wall scraping assembly (20) is located in the powder material feeding chamber (Q1), a portion of the impeller assembly (10) is located in the powder material feeding chamber (Q1), another portion is located in the powder-liquid mixing chamber (Q2), and the remaining portion is located in the pumping chamber (Q3), and the wall scraping assembly (20) scrapes away the powder attached to the cavity wall of the powder material feeding chamber (Q1) through its wall scraping member (22).

11. The powder-liquid mixing device (1000) according to claim 10, characterized in that: The impeller assembly (10) comprises a first impeller assembly (11), a second impeller assembly (12) and a pumping impeller (13) which are sequentially arranged along the axial direction (Z); The first impeller assembly (11) is arranged adjacent to the scraper assembly (20) and is used to transport the powder flowing out of the scraper assembly (20) toward the second impeller assembly (12); the second impeller assembly (12) is used to mix and disperse the powder and liquid passing through it to output slurry to the pumping impeller (13), and the pumping impeller (13) is used to transport the slurry in the radial direction.

12. The powder-liquid mixing device (1000) according to claim 11, characterized in that: The first impeller assembly (11) comprises a first pressure-feeding impeller (11a), a first dispersing impeller (11b), and a second pressure-feeding impeller (11c) sequentially arranged along the axial direction (Z), the first pressure-feeding impeller (11a) being arranged adjacent to the scraping assembly (20), the first pressure-feeding impeller (11a) and the second pressure-feeding impeller (11c) being used to transport powder toward the side where the second impeller assembly (12) is located, and the first dispersing impeller (11b) being used to disperse powder passing through the impeller; The second impeller group (12) includes a mixing impeller (12a) and a second dispersing impeller (12b) arranged in sequence along the axial direction (Z), the second dispersing impeller (12b) being arranged adjacent to the pumping impeller (13), the mixing impeller (12a) being used for mixing powder and liquid, and the second dispersing impeller (12b) being used for dispersing slurry obtained after the powder and liquid are mixed by the mixing impeller (12a).

13. The powder-liquid mixing device (1000) according to claim 10, characterized in that: The powder material feeding cavity (Q1) has a conical cavity section (q1), and the inner diameter of the conical cavity section (q1) is arranged to increase gradually along the axial direction (Z) toward the powder-liquid mixing cavity (Q2).

14. The powder-liquid mixing device (1000) according to claim 10, characterized in that: There is a gap between the wall scraper (22) and the cavity wall of the powder material feeding cavity (Q1), and the size of the gap is 0.2mm to 5mm.

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