Multi-bladed stirring assembly

Abstract

The utility model discloses a kind of multi-blade stirring assemblies, including stirring shaft, stirring rod and stirring blade, the stirring shaft is fixed with several connecting rings, the connecting ring is evenly provided with several first connecting holes, one end of the stirring rod is connected with stirring blade, the other end of the stirring rod is connected with connecting plate, one side of the connecting plate is equipped with arc slot, the connecting plate is equipped with several second connecting holes around arc slot, the stirring rod is connected with connecting ring by connecting plate, the stirring blade is different in length between each other. The scheme can break flow symmetry when stirring, and enhance the convection and shear effect of material.

Description

Technical Field

[0001] This utility model belongs to the technical field of stirring components, specifically relating to a multi-blade stirring component. Background Technology

[0002] In industries such as chemical, pharmaceutical, and food processing, stirring devices are widely used in processes involving material mixing, dissolution, reaction, and heat transfer. In existing technologies, common stirring devices typically consist of a stirring shaft and multiple stirring blades mounted on it. Traditional stirring blades are mostly of equal length and are uniformly distributed along the axial or radial direction of the stirring shaft. They are simple in structure, easy to manufacture, and can achieve a certain degree of material stirring and mixing.

[0003] Chinese Patent No. 2018206519932 discloses an automatic lifting stirring blade for grout material mixing, including a stirring shaft, stirring blades, and a forward and reverse motor. The stirring shaft has at least two shoulders and is a hollow shaft. Each shoulder contains an electromagnet. The stirring shaft has threaded grooves along its shaft body, located between the shoulders. The stirring blades have locking pins and are fitted into the threaded grooves via these pins. The stirring blades also have magnetic components. In this grout material mixing device, the stirring shaft has threaded grooves, and the stirring blades have locking pins. The stirring shaft and stirring blades are connected by the engagement of the threaded grooves and locking pins, allowing the stirring blades to slide along the threaded grooves on the stirring shaft. The stirring shaft has at least two shoulders, each containing an electromagnet, and the stirring blades have magnetic components, positioned between adjacent shoulders.

[0004] The above-mentioned scheme has the advantages of a larger mixing area and better mixing effect. However, in practical applications, the traditional equal-length mixing blade structure has certain limitations. Because the mixing blades are of uniform length, a symmetrical flow field is easily formed during the mixing process, which can lead to problems such as eddies, dead corners, or uneven material distribution inside the mixing container. This is especially true when dealing with high-viscosity, easily stratified, or materials that require enhanced mass transfer, resulting in lower mixing efficiency. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a multi-blade stirring assembly, comprising a stirring shaft, stirring rods, and stirring blades. Several connecting rings are fixedly mounted on the stirring shaft, and several first connecting holes are evenly distributed on each connecting ring. One end of the stirring rod is connected to the stirring blades, and the other end of the stirring rod is connected to a connecting plate. An arc-shaped groove is provided on one side of the connecting plate, and several second connecting holes are provided around the arc-shaped groove on the connecting plate. The stirring rods are connected to the connecting rings via the connecting plate. The stirring rods and the stirring blades have different lengths.

[0006] Preferably, the stirring rod includes a first stirring rod disposed in the middle of the stirring shaft, a second stirring rod disposed on both sides of the stirring shaft, and a third stirring rod disposed on the stirring shaft between the first stirring rod and the second stirring rod, wherein the length of the first stirring rod is greater than that of the second stirring rod, and the length of the second stirring rod is greater than that of the third stirring rod.

[0007] Preferably, the stirring blade includes a first stirring blade, a second stirring blade, and a third stirring blade. The first stirring blade is connected to a first stirring rod, the second stirring blade is connected to a second stirring rod, and the third stirring blade is connected to a third stirring rod. The first stirring blade includes a first blade base plate, the second stirring blade includes a second blade base plate, and the second blade base plate has extended wing plates on both sides.

[0008] Preferably, the extended wing plate is bent into the second leaf base plate, and the bending angle is 30°-60°.

[0009] Preferably, the bottom of the first blade substrate is provided with a mounting groove, the first blade substrate is provided with a first bolt hole, the end of the first stirring rod is provided with a second bolt hole, and the first blade substrate and the first stirring rod are screwed together.

[0010] The advantages of this utility model are:

[0011] 1. This design features a stirring rod and blades of different lengths, which, driven by the stirring shaft, generate asymmetric disturbances and irregular streamlines in the fluid. This effectively breaks the stable rotating flow field formed by traditional blades of equal length, enhancing the disturbance and turbulence intensity of the fluid. It helps to disrupt the liquid interface, disperse vortex centers, and improve the overall circulation speed and mass and heat transfer efficiency of the material. It is particularly suitable for applications requiring enhanced reaction processes or mixing precision.

[0012] 2. In this solution, by setting up a connecting plate and an arc-shaped groove structure, the stirring rod can be flexibly installed on the connecting ring of the stirring shaft. When a stirring blade or stirring rod is worn, the corresponding part can be replaced individually without replacing the entire assembly, thus reducing maintenance costs and extending service life.

[0013] 3. In this solution, multiple types of stirring blades work together to form disturbance zones of different amplitudes and intensities, promoting the breakdown and rapid fusion of material stratification within the container. This solution is particularly suitable for process scenarios where high mixing uniformity is required. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present utility model.

[0015] Figure 2 This is a side view of the present invention.

[0016] Figure 3This is a structural diagram of the first stirring blade of this utility model.

[0017] Figure 4 This is a structural diagram of the second stirring blade of this utility model.

[0018] In the figure: 1 stirring shaft, 2 connecting ring, 3 first connecting hole, 4 connecting plate, 5 arc groove, 6 second connecting hole, 7 first stirring rod, 8 second stirring rod, 9 third stirring rod, 10 first stirring blade, 11 second stirring blade, 12 third stirring blade, 13 first blade base plate, 14 second blade base plate, 15 extension wing plate, 16 mounting groove, 17 first bolt hole, 18 second bolt hole. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Simultaneously, when an component is referred to as "fixed to" or "equipped on" another component, it can be directly on the other component or may have an intervening component present. When an component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present. When an component is referred to as "fixedly connected to" another component, it can be a common fixed connection method such as welding, bolting, or gluing. In short, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1, such as Figure 1-2As shown, a multi-blade stirring assembly includes a stirring shaft 1, a stirring rod, and stirring blades. Several connecting rings 2 are fixedly mounted on the stirring shaft 1, and several first connecting holes 3 are evenly distributed on the connecting rings 2. One end of the stirring rod is connected to the stirring blade, and the other end of the stirring rod is connected to a connecting plate 4. An arc-shaped groove 5 is provided on one side of the connecting plate 4, and several second connecting holes 6 are provided around the arc-shaped groove 5 on the connecting plate 4. The diameter of the arc-shaped groove 5 is the same as the diameter of the stirring shaft 1. The connecting plate 4 and the connecting rings 2 are connected by bolts. By setting the structure of the connecting plate 4 and the arc-shaped groove 5, the stirring rod can be flexibly mounted on the connecting rings 2 of the stirring shaft 1. When a stirring blade or stirring rod becomes worn, the corresponding part can be replaced individually without replacing the entire assembly, reducing maintenance costs and extending service life.

[0023] The stirring rods are connected to the connecting ring 2 via the connecting plate 4. The stirring rods and blades have varying lengths. This difference in length, driven by the stirring shaft 1, generates asymmetric disturbances and irregular streamlines in the fluid. This effectively breaks the stable rotating flow field formed by traditional blades of equal length, enhancing the disturbance and turbulence intensity of the fluid. It helps to disrupt the liquid interface, disperse vortex centers, and improve the overall circulation speed and mass and heat transfer efficiency of the material. This is particularly suitable for applications requiring enhanced reaction processes or mixing precision.

[0024] The stirring rods include a first stirring rod 7 located in the middle of the stirring shaft 1, second stirring rods 8 located on both sides of the stirring shaft 1, and a third stirring rod 9 located on the stirring shaft 1 between the first stirring rod 7 and the second stirring rods 8. The first stirring rod 7 is longer than the second stirring rod 8, and the second stirring rod 8 is longer than the third stirring rod 9. The first stirring rod 7 is located in the center and has the longest length, providing the main stirring power and flow core. The second stirring rods 8 are distributed on both sides as auxiliary stirring blades to help the edge areas participate in circulation. The third stirring rod 9 is shorter and installed between the first and second stirring rods, which can generate local disturbance compensation and further fill the flow field gap in the intermediate transition zone. The stirring rods are distributed in order of length, especially the longest in the middle, followed by the sides, and the shortest in the middle interlayer. This is conducive to forming a multi-layered, three-dimensional, and interwoven flow structure in the stirring container, causing complex disturbances in the liquid, improving the uniformity of stirring, and avoiding local accumulation or dead zones.

[0025] Combination Figure 3 and Figure 4The stirring blades include a first stirring blade 10, a second stirring blade 11, and a third stirring blade 12. The first stirring blade 10 is connected to a first stirring rod 7, the second stirring blade 11 is connected to a second stirring rod 8, and the third stirring blade 12 is connected to a third stirring rod 9. The first stirring blade 10 includes a first blade base plate 13, and the second stirring blade 11 includes a second blade base plate 14. Extended wing plates 15 are provided on both sides of the second blade base plate 14. The structure of the third stirring blade 12 is similar to that of the second stirring blade 11, except that the length of the extended wing plate 15 is less than the length of the extended wing plate 15 on the second blade base plate 14. The first stirring blade 10 is a basic blade structure used for the main stirring flow. The second stirring blade 11 is equipped with a longer extended blade 15, which can expand the contact surface and enhance the cutting and pushing ability. It is especially suitable for stirring large-volume, high-viscosity materials in the middle. Although the third stirring blade 12 has a similar structure, its extended blade 15 is shorter. It is used for auxiliary disturbance and fine stirring in the edge area or local flow field to improve accuracy. The various types of stirring blades work together to form disturbance zones of different amplitudes and intensities, promoting the stratification and rapid fusion of materials in the container. It is particularly suitable for process scenarios with high requirements for stirring uniformity.

[0026] The extended vane 15 and the second blade base 14 are bent at an angle of 60°. This creates a 30°-60° angle structure between the extended vane 15 and the blade base, which guides the fluid to generate three-dimensional disturbance during rotation. Compared to planar blades, this more effectively breaks the stable structure between fluid layers, enhancing the shearing and mixing effect in the stirring zone, making it suitable for demanding mixing or emulsification processes. The angle guides the liquid to generate a certain axial flow component during stirring and rotation, such as upward or downward, thereby breaking the flow field structure that only circulates radially. This facilitates material exchange between the upper and lower layers of the stirring chamber, promoting uniformity in mixing, reaction, or heat transfer.

[0027] The bottom of the first blade substrate 13 is provided with a mounting groove 16, and the first blade substrate 13 is provided with a first bolt hole 17. The end of the first stirring rod 7 is provided with a second bolt hole 18. The first blade substrate 13 and the first stirring rod 7 are screwed together. The second blade substrate 14 and the third blade substrate are also screwed together with their respective stirring blades. The screw connection through the bolt holes makes the installation or replacement of the stirring blades more convenient, without the need for special tools or destructive disassembly, reducing maintenance costs and making it suitable for industrial sites that require frequent maintenance.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-blade stirring assembly, characterized in that: The device includes a stirring shaft (1), a stirring rod, and stirring blades. Several connecting rings (2) are fixedly provided on the stirring shaft (1). Several first connecting holes (3) are evenly provided on the connecting rings (2). One end of the stirring rod is connected to the stirring blades, and the other end of the stirring rod is connected to a connecting plate (4). An arc groove (5) is provided on one side of the connecting plate (4). Several second connecting holes (6) are provided around the arc groove (5) on the connecting plate (4). The stirring rod is connected to the connecting rings (2) through the connecting plate (4). The stirring rods are of different lengths, and the stirring blades are of different lengths.

2. The multi-blade stirring assembly according to claim 1, characterized in that: The stirring rod includes a first stirring rod (7) located in the middle of the stirring shaft (1), a second stirring rod (8) located on both sides of the stirring shaft (1), and a third stirring rod (9) located on the stirring shaft (1) between the first stirring rod (7) and the second stirring rod (8). The length of the first stirring rod (7) is greater than that of the second stirring rod (8), and the length of the second stirring rod (8) is greater than that of the third stirring rod (9).

3. The multi-blade stirring assembly according to claim 2, characterized in that: The stirring blades include a first stirring blade (10), a second stirring blade (11) and a third stirring blade (12). The first stirring blade (10) is connected to a first stirring rod (7), the second stirring blade (11) is connected to a second stirring rod (8), and the third stirring blade (12) is connected to a third stirring rod (9). The first stirring blade (10) includes a first blade base plate (13), and the second stirring blade (11) includes a second blade base plate (14). The second blade base plate (14) has extension wing plates (15) on both sides.

4. The multi-blade stirring assembly according to claim 3, characterized in that: The extended wing plate (15) is bent into the second leaf base plate (14) at an angle of 30°-60°.

5. The multi-blade stirring assembly according to claim 4, characterized in that: The bottom of the first leaf substrate (13) is provided with a mounting groove (16), the first leaf substrate (13) is provided with a first bolt hole (17), the end of the first stirring rod (7) is provided with a second bolt hole (18), and the first leaf substrate (13) and the first stirring rod (7) are screwed together.

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