High-speed mixer

Abstract

The invention relates to a high-speed mixer. The device comprises a base; the container is arranged on the base, the container is provided with a mixing cavity, and a preset included angle is formed between the axis of the mixing cavity and the gravity direction; the central blade device is arranged in the mixing cavity and comprises a plurality of first blades which pivot around a first axis; wherein the first blade is close to the bottom of the mixing cavity, and the first axis coincides with the central axis of the mixing cavity; the eccentric blade device is arranged in the mixing cavity and comprises a plurality of second blades which pivot around a second axis; wherein the second blade is close to the top of the mixing cavity, and the second axis is parallel to the central axis of the mixing cavity and is separated from the central axis of the mixing cavity by a preset distance. According to the invention, a complex and efficient mixing flow field can be realized, the mixing efficiency is improved, the equipment reliability is improved, and the manufacturing and maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of mixing and stirring, in particular to a high-speed mixer. Background Art

[0002] Currently, the mainstream technical solution for high-speed mixers is to install central stirring blades within a horizontally arranged mixing chamber. These blades rotate at high speeds to mix and disperse the materials. Furthermore, the arrangement of multiple blades and the variation in the linear velocity gradients of each layer optimize the mixing field distribution and enhance the mixing effect. Some designs utilize a structure that combines a hollow shaft with a central shaft (both of which rotate independently and drive the stirring blades at different levels) to further enhance the linear velocity differences between the blades at different levels, improving mixing performance.

[0003] However, the above solution has problems such as high manufacturing cost, high equipment failure rate and difficulty in subsequent maintenance and repair during implementation. Summary of the Invention

[0004] To this end, the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, which has a simple mechanical structure and can achieve a complex and efficient three-dimensional mixing flow field, thereby improving the mixing efficiency, improving the reliability of the equipment, and reducing the manufacturing and maintenance costs.

[0005] In order to solve the above technical problems, the present invention provides a high-speed mixer, comprising: base; A container is disposed on the base, wherein the container has a mixing chamber, and an axis of the mixing chamber forms a predetermined angle with the direction of gravity; a central blade device, disposed in the mixing chamber, comprising a plurality of first blades pivoting about a first axis; wherein the first blades are close to the bottom of the mixing chamber, and the first axis coincides with the central axis of the mixing chamber; An eccentric blade device is arranged in the mixing chamber and includes a plurality of second blades pivoting around a second axis; wherein the second blades are close to the top of the mixing chamber, and the second axis is parallel to the central axis of the mixing chamber and separated by a predetermined distance.

[0006] In one embodiment of the present invention, the central blade device includes a pivot, a plurality of the first blades are mounted on the pivot, the pivot is mounted on the top end of the container, and the first axis is configured as a central axis of the pivot.

[0007] In one embodiment of the present invention, the eccentric blade device includes a blade hub, a plurality of second blades are mounted on the blade hub, the blade hub is rotatably connected to the bottom end of the container, and the second axis is configured as the central axis of the blade hub.

[0008] In one embodiment of the present invention, a plurality of first blades are evenly spaced along the axial direction of the pivot, and a plurality of first blades are evenly spaced along the circumferential direction of the first axis. The first blades are long and flat structures, and both ends extend radially symmetrically outward along the pivot, and an arc-shaped surface is provided on the end edge of the first blade.

[0009] In one embodiment of the present invention, a plurality of second blades are evenly spaced along the circumferential direction on the blade hub, the second blades are long and flat in structure and a curved portion is provided at the outer end thereof toward the top of the mixing chamber, and the projection of the curved portion toward the pivot direction covers at least a portion of the first blades.

[0010] In one embodiment of the present invention, the predetermined angle is 25°~35°.

[0011] In one embodiment of the present invention, the predetermined distance is 0.05 to 0.45 times the radial dimension of the mixing chamber.

[0012] In one embodiment of the present invention, the mixing chamber is centrally symmetrical.

[0013] In one embodiment of the present invention, a sealing cover is provided on the top of the container.

[0014] In one embodiment of the present invention, a discharging device is further included. The discharging device is arranged on the outer side wall of the mixing chamber and is used to discharge the mixed material out of the mixing chamber.

[0015] The above technical solution of the present invention has the following advantages over the prior art: The high-speed mixer described in this invention utilizes a combination of central and eccentric blades, eliminating the complex coaxial arrangement of a central shaft and a hollow shaft in the prior art. This results in a simpler and more compact overall mechanical structure, significantly reducing manufacturing costs, facilitating subsequent assembly and maintenance, and improving reliability. The tilted container and the composite structure of the central and eccentric blades achieve a complex and efficient three-dimensional flow field, improving mixing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the main cross-sectional structure of the high-speed mixer of the present invention.

[0018] Figure 2 It is a schematic structural diagram of the interior of the high-speed mixer container of the present invention.

[0019] Figure 3 It is a schematic diagram of the top structure of the high-speed mixer of the present invention.

[0020] Figure 4 It is a side structural schematic diagram of the high-speed mixer of the present invention.

[0021] Description of the accompanying drawings: 1. Base; 2. Container; 21. Mixing chamber; 22. Cover; 3. Central blade assembly; 31. First blade; 311. Arc-shaped surface; 32. Pivot; 4. Eccentric blade device; 41. Second blade; 411. Curved portion; 42. Blade hub; 5. Discharging device. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0023] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation of the present invention.

[0024] In the present invention, "several" means one or more, "multiple" means more than two, "greater than," "less than," "exceeds," etc. are understood to exclude the number itself; "above," "below," "within," etc. are understood to include the number itself. In the description of the present invention, the use of "first" or "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0025] In the present invention, unless otherwise expressly defined, terms such as "disposed," "installed," and "connected" should be interpreted broadly. For example, they may refer to direct connection or indirect connection through an intermediate medium; fixed connection or detachable connection or integral molding; mechanical connection or electrical connection or mutual communication; and internal connection between two components or interaction between two components. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] Reference Figure 1 As shown, a high-speed mixer of the present invention comprises: Base 1; A container 2 is provided on the base 1, wherein the container 2 has a mixing chamber 21, and an axis of the mixing chamber 21 forms a predetermined angle with the direction of gravity; The central blade device 3 is disposed in the mixing chamber 21 and includes a plurality of first blades 31 pivoting around a first axis; wherein the first blades 31 are close to the bottom of the mixing chamber 21, and the first axis coincides with the central axis of the mixing chamber 21; The eccentric blade device 4 is arranged in the mixing chamber 21 and includes a plurality of second blades 41 pivoting around a second axis; wherein the second blades 41 are close to the top of the mixing chamber 21, and the second axis is parallel to the central axis of the mixing chamber 21 and separated by a predetermined distance.

[0027] With this arrangement, the central blade assembly 3 is positioned near the bottom of the mixing chamber 21, the eccentric blade assembly 4 is positioned near the top of the mixing chamber 21, and the two sets of blades pivot about different axes that are parallel but non-coincident. The mixing chamber 21 is tilted relative to the horizontal plane, creating a complex and varied three-dimensional mixing flow field within the mixing chamber 21. This effectively enhances the flow and shearing of materials in different spatial regions, improving mixing uniformity and efficiency. Compared to conventional solutions with only a central agitator shaft, this achieves full mixing and dispersion of materials in a much shorter time.

[0028] In one embodiment, the central blade assembly 3 includes a pivot 32, to which the plurality of first blades 31 are mounted. The pivot 32 is mounted at the top of the container 2, and the first axis is configured as the central axis of the pivot 32. Furthermore, the central blade assembly 3 is driven to rotate by a main drive motor or a reduction motor disposed at the top of the mixer. Power can be transmitted to the pivot 32 via a coupling, a transmission shaft, or a gear mechanism.

[0029] In one embodiment, the eccentric blade device 4 includes a blade hub 42, with a plurality of second blades 41 mounted on the blade hub 42. The blade hub 42 is rotatably connected to the bottom end of the container 2, and the second axis is configured as the central axis of the blade hub 42. By directly disposing a drive motor at the bottom of the container 2, a synchronous belt, chain, or gear set can be used to drive the blade hub 42 to rotate via a transmission shaft; the transmission shaft can be supported by a bearing seat at the bottom of the container 2.

[0030] In one embodiment, referring to Figure 1 、 Figure 2As shown, a plurality of the first blades 31 are evenly spaced along the axial direction on the pivot 32, and a plurality of the first blades 31 are evenly spaced along the circumferential direction of the first axis. The first blades 31 are of a long and flat structure, and the two ends extend radially and symmetrically outward along the pivot 32. The end edge of the first blade 31 is provided with an arcuate surface 311. The distribution of the first blades 31 along the axial and circumferential directions effectively increases the force-bearing area and force path of the material, promotes the full flow of the material in various areas of the cavity, significantly improves the uniformity of mixing, and avoids the generation of local dead zones. In addition, the first blade 31 adopts a long and flat structure, and the two ends extend radially and symmetrically outward along the pivot 32, which can generate a larger range of radial thrust inside the mixing chamber 21, so that the material obtains good disturbance and tumbling in both the radial and axial directions, further enhancing the stirring and dispersion effect. The arcuate surface 311 is provided at the end of the first blade 31, which can reduce fluid resistance, optimize material streamlines, reduce energy consumption, and at the same time reduce material retention and adhesion, thereby improving stirring efficiency.

[0031] Specifically, refer to Figure 2 As shown, a plurality of second blades 41 are evenly spaced along the circumferential direction on the blade hub 42, and the second blades 41 are long and flat in structure and a curved portion 411 is provided at the outer end thereof toward the top of the mixing chamber 21, and the projection of the curved portion 411 toward the pivot 32 covers at least a part of the first blades 31, further eliminating the mixing dead angle in the mixing chamber 21, and the material can flow in multiple paths and directions in the chamber, fully avoiding the mixing dead zone caused by traditional single central axis mixing, and improving the uniformity of mixing.

[0032] It should be noted that this high-speed mixer adopts a composite structure with a tilted container 2, a central blade device 3, and an eccentric blade device 4. Through the spatial layout of upper and lower layers and a combination of center and eccentric, the stirring blades can act separately in different spatial areas of the cavity, achieving multi-level and multi-directional material movement. Multiple first blades 31 are evenly spaced axially and circumferentially along the pivot 32. Combined with the long, flat, arc-shaped end structure, they can generate strong radial and axial thrust at the bottom of the mixing chamber 21; multiple second blades 41 are distributed circumferentially along the blade hub 42, and form a disturbance toward the top of the mixing chamber 21 at the top. The outer ends are curved and cover the bottom blade area. The material is subjected to multiple disturbances in the cavity at the same time, such as radial, tangential, and axial disturbances. The shear forces and convection effects in different directions are superimposed, promoting the formation of a complex, three-dimensional flow field, greatly improving the mixing efficiency, and achieving a highly uniform and rapid mixing effect.

[0033] In one embodiment, the predetermined angle is between 25° and 35°. When a certain angle is formed between the axis of the mixing chamber 21 and the direction of gravity, the material not only forms a circular flow in radial and tangential directions during mixing, but is also affected by the gravity component, causing the material to flow in multiple layers along the mixing chamber 21. Compared to the material flow field within a single plane in a traditional horizontal or vertical mixing chamber, this creates a more complex three-dimensional mixing cycle. An angle range of 25° to 35° balances the tumbling effect of the material and the effective volume of the mixing container.

[0034] In one embodiment, the predetermined distance is 0.05 to 0.45 times the radial dimension of the mixing chamber 21 .

[0035] In one embodiment, the mixing chamber 21 is centrally symmetrical, such as cylindrical, and is a closed or semi-closed cavity.

[0036] In one embodiment, referring to Figure 4 As shown, a cover 22 is provided on the top of the container 2 .

[0037] In one embodiment, referring to Figure 2 As shown, the apparatus further includes a discharge device 5, which is disposed on the outer wall of the mixing chamber 21, located on the side, bottom, or top of the mixing chamber 21, and is used to discharge the mixed material from the mixing chamber 21. Specifically, the discharge device 5 adopts a discharge valve, such as a ball valve or a gate valve structure, whose valve body is connected to the wall of the mixing chamber 21, and is used to control the discharge of the mixed material, and can realize the functions of opening, closing, and regulating the flow rate.

[0038] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A high-speed mixer, characterized in that: include: Base (1); A container (2) is arranged on the base (1), the container (2) having a mixing chamber (21), wherein the axis of the mixing chamber (21) forms a predetermined angle with the direction of gravity; a central blade device (3) disposed in the mixing chamber (21), comprising a plurality of first blades (31) pivoting about a first axis; wherein the first blades (31) are close to the bottom of the mixing chamber (21), and the first axis coincides with the central axis of the mixing chamber (21); An eccentric blade device (4) is arranged in the mixing chamber (21) and includes a plurality of second blades (41) pivoting around a second axis; wherein the second blades (41) are close to the top of the mixing chamber (21), and the second axis is parallel to the central axis of the mixing chamber (21) and separated by a predetermined distance.

2. A high-speed mixer according to claim 1, characterized in that, The central blade device (3) includes a pivot (32), a plurality of the first blades (31) are mounted on the pivot (32), the pivot (32) is mounted on the top of the container (2), and the first axis is configured as the central axis of the pivot (32).

3. A high-speed mixer according to claim 2, characterized in that, The eccentric blade device (4) includes a blade hub (42), a plurality of second blades (41) are mounted on the blade hub (42), the blade hub (42) is rotatably connected to the bottom end of the container (2), and the second axis is configured as the central axis of the blade hub (42).

4. A high-speed mixer according to claim 3, characterized in that, The plurality of first blades (31) are evenly spaced along the axial direction on the pivot (32), and the plurality of first blades (31) are evenly spaced along the circumference of the first axis. The first blade (31) is a long flat structure, and both ends extend radially symmetrically outward along the pivot (32). The end edge of the first blade (31) is provided with an arcuate surface (311).

5. A high-speed mixer according to claim 4, characterized in that, A plurality of second blades (41) are evenly spaced and distributed on the blade hub (42) along the circumferential direction. The second blades (41) are of a long and flat structure and are provided with a curved portion (411) at their outer ends facing the top of the mixing chamber (21). The projection of the curved portion (411) in the direction of the pivot (32) covers at least a portion of the first blades (31).

6. A high-speed mixer according to claim 1, characterized in that, The predetermined angle is 25°~35°.

7. A high-speed mixer according to claim 1, characterized in that, The predetermined distance is 0.05 to 0.45 times the radial dimension of the mixing chamber (21).

8. A high-speed mixer according to claim 1, characterized in that, The mixing chamber (21) is centrally symmetrical.

9. A high-speed mixer according to claim 1, characterized in that, A sealing cover (22) is provided on the top of the container (2).

10. A high-speed mixer according to claim 1, characterized in that: It also includes a discharge device (5), which is arranged on the outer wall of the mixing chamber (21) and is used to discharge the mixed material out of the mixing chamber (21).

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