Spreading rotational flow stirring device

Abstract

The utility model discloses a rotational flow stirring device which comprises a plurality of stirring shafts and a plurality of hubs arranged on the stirring shafts, the hub comprises a shaft sleeve, a plurality of fan blades and a connecting plate used for connecting the fan blades and the shaft sleeve. The shaft sleeve is sleeved on the stirring shaft; the shaft sleeve is fixedly connected with the stirring shaft; the connecting plate is fixedly connected to the shaft sleeve; the fan blades are arranged on the shaft sleeve in an annular array mode. Each fan blade is fixedly connected to the connecting plate; and the fan blades are variable cross-section fan blades. The angles of the fan blades are gradually increased, the fan blades suddenly turn when liquid flow encounters the paddles, the resistance is small, and after fluid turns in the flowing direction when encountering the paddles, the fluid is completely discharged from the lower parts of the paddles, so that the stirring performance is improved; the mixing efficiency is improved, the material transfer efficiency is improved, and the total power consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the field of material stirring, in particular to a swirl stirring device. Background Art

[0002] Positive electrode materials, negative electrode materials and electrolytic solutions are several liquid materials with different viscosities and different pH values, and they are generally stirred by a stirrer. The blades used in existing agitators of this type are usually inclined blades, and multiple blades are evenly distributed around the shaft sleeve at a certain angle, preferably 3 to 4 blades. An agitator with two identical sets of inclined blades is used, with the middle shaft sleeve as the center, and inclined blade agitators of different diameters are selected according to needs. Although existing agitators of this type have the advantages of simple structure and easy manufacturing, when stirring high-viscosity slurry solutions, the radial mixing effect of the inclined blades is poor, the shear force is large, and the overall mixing effect is poor; at the same time, in a large-volume tank, mixing is more difficult at the upper and lower parts away from the stirring blades, and the mixing effect is poor, resulting in a low mixing effect and concentration in the slurry solution away from the stirring blades, so that the concentration of acid, alkali and defoaming agent is higher near the feeding port, resulting in uneven stirring.

[0003] The agitator with two sets of inclined blades belongs to the axial mixing and stirring device. Although the radial stirring is strengthened to a certain extent, the efficiency of the axial stirring cannot be improved, resulting in unsatisfactory mixing effect in large-volume tanks, the mixing and dispersion effect of material dissolution cannot be improved, and the material transfer efficiency is low. At the same time, in terms of power consumption, the power consumption of the inclined blade combination paddle is large, which makes the stirring cost relatively high. In general, the existing inclined blade stirring combination paddle has shortcomings in terms of overall mixing of container energy, material transfer, and total power consumption. Utility Model Content

[0004] The utility model provides a swirl stirring device to solve the technical problems of low overall mixing efficiency, low material transfer efficiency and high total power consumption of inclined blades in the prior art;

[0005] The utility model provides a swirl stirring device, comprising a stirring shaft and a plurality of hubs arranged on the stirring shaft; the hub comprises a shaft sleeve, a plurality of fan blades and a connecting plate for connecting the fan blades and the shaft sleeve; the shaft sleeve is sleeved on the stirring shaft; the shaft sleeve is fixedly connected to the stirring shaft; the connecting plates are arranged in a ring array on the shaft sleeve and are fixedly connected to the shaft sleeve; each of the fan blades is fixedly connected to the connecting plate; the fan blades are variable-section fan blades.

[0006] A further optimization is that the angle between the side of the fan blade close to the stirring shaft and the axis of the stirring shaft is smaller than the angle between the side of the fan blade away from the stirring shaft and the axis of the stirring shaft.

[0007] Further optimization is that the fan blades are fixedly connected to the lower surface of the connecting plate; the fan blades are in contact with the contact surface of the connecting plate.

[0008] Further optimization is that a reinforcement piece is provided on the connecting plate; the length of the reinforcement piece extending toward the fan blade is the same as the length of the connecting plate extending toward the fan blade; and the reinforcement piece is fixedly connected to the upper surface of the connecting plate (5).

[0009] Further optimization is that the reinforcement member is a reinforcing rib plate vertically arranged on the upper surface of the connecting plate.

[0010] Further optimization is that the reinforcement is an arc-shaped spoiler arranged on the upper surface of the connecting plate; the lower surface of the arc-shaped spoiler is in contact with the upper surface of the connecting plate, and the upper surface of the arc-shaped spoiler is arc-shaped.

[0011] Further optimization is that the inner wall of the shaft sleeve is provided with a first step portion; and a second step portion matching the first step portion is provided on the base surface of the inner wall of the stirring shaft and the shaft sleeve.

[0012] Beneficial effects of the utility model:

[0013] The utility model provides a swirl stirring device, in which the angle of the fan blades gradually increases, and the fan blades have a small resistance when the liquid flow suddenly turns when encountering the blades. After the flow direction of the fluid turns when encountering the blades, all of the fluid is discharged from the lower part of the blades, thereby improving the stirring performance, improving the mixing efficiency, improving the material transfer efficiency, and reducing the total power consumption.

[0014] The utility model provides a swirl stirring device, which disturbs the liquid on the connecting plate by vertically arranging a reinforcing rib plate on the connecting plate, reduces the impact force of the liquid on the connecting plate during stirring, and guides the liquid to the fan blades.

[0015] The utility model uses a swirl stirring device to disturb the liquid near the connecting plate through an arc-shaped spoiler plate, and guides the liquid to the upper and lower ends of the connecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a swirl stirring device according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the fan blade-reinforcement rib plate structure of Example 1 of a swirl stirring device described in the utility model;

[0018] Figure 3 This is a schematic diagram of the fan blade-arc spoiler structure of Example 2 of a swirl stirring device described in the utility model;

[0019] Figure 4This is a schematic diagram of the transmission shaft-sleeve structure of Example 3 of a swirl stirring device described in the utility model;

[0020] Among them, 1-agitator shaft, 2-shaft sleeve, 3-fan blade, 4-connecting plate, 5-reinforcement rib plate, 6-bolt, 7-arc spoiler, 8-first step portion, 9-second step portion. DETAILED DESCRIPTION

[0021] Embodiment 1:

[0022] See also Figures 1 to 2 The utility model provides a swirl stirring device, comprising a stirring shaft 1 and two hubs arranged on the stirring shaft 1; the hub comprises a sleeve 2, four blades 3, a connecting plate 5 for connecting the blades 3 and the sleeve 2, and four reinforcements; the sleeve 2 is sleeved on the stirring shaft 1; the sleeve 2 is welded to the stirring shaft 1; a positioning groove for positioning is arranged on the contact surface of the sleeve 2 and the stirring shaft 1; each connecting plate 5 is welded on the sleeve 2; four blades 3 are arranged in a ring array on the sleeve 2; each blade 3 is fixed by a bolt 6 It is fixedly connected to the lower surface of the connecting plate 5; the fan blade 2 is a variable-section fan blade; the angle between the side of the fan blade 2 close to the stirring shaft 1 and the axis of the stirring shaft 1 is smaller than the angle between the side of the fan blade away from the stirring shaft 1 and the axis of the stirring shaft 1; the contact surface of the fan blade 3 and the connecting plate 5 is in contact with the lower surface of the connecting plate; the reinforcement is a reinforcing rib plate 4; the reinforcing rib plate 4 is welded to the upper surface of the connecting plate 5 and is arranged perpendicular to the connecting plate 5; the length of the reinforcing rib plate 4 is the same as that of the connecting plate, the installation direction of the reinforcing rib plate 4 is the same as the direction of the fan blade 3, and the reinforcing rib plate 4 is radially installed.

[0023] Embodiment 2:

[0024] See also Figure 3 This embodiment provides a swirl stirring device. The difference between this embodiment and embodiment 1 is that the reinforcement member of this embodiment is an arc-shaped spoiler 7, which is welded to the upper surface of the connecting plate 5, and the lower surface of the arc-shaped spoiler 7 is in contact with the upper surface of the connecting plate 5; the upper surface of the arc-shaped spoiler 7 is arc-shaped, and the arc-shaped spoiler 7 is radially installed, and the installation direction is the same as the extension direction of the fan blade 3.

[0025] Embodiment 3:

[0026] Reference Figure 4 This embodiment provides a swirl stirring device. The difference between this embodiment and embodiment 1 is that a first step portion 8 is provided on the inner side of the sleeve 2; a second step portion 9 with the first step portion 8 is provided on the contact surface between the transmission rod 1 and the sleeve; a portion with a smaller inner diameter of the first step portion 8 is interference fit with a position with a smaller outer diameter of the second step portion 9; a portion with a larger inner diameter of the first step portion 8 is interference fit with a portion with a larger outer diameter of the second step portion 9.

Claims

1. A cyclonic stirring device, comprising a stirring shaft (1), and a plurality of hubs arranged on the stirring shaft (1); characterized in that: The hub comprises a shaft sleeve (2), a plurality of blades (3), and a connecting plate (5) for connecting the blades (3) and the shaft sleeve (2); the shaft sleeve (2) is sleeved on the stirring shaft (1); the shaft sleeve (2) is fixedly connected to the stirring shaft (1); the connecting plate (5) is arranged in a ring array on the shaft sleeve (2) and is fixedly connected to the shaft sleeve (2); each of the blades (3) is fixedly connected to the connecting plate (5); and the blades (3) are variable-section blades.

2. A swirl stirring device according to claim 1, characterized in that: The angle between the side of the fan blade (3) close to the stirring shaft (1) and the axis of the stirring shaft (1) is smaller than the angle between the side of the fan blade far from the stirring shaft (1) and the axis of the stirring shaft (1).

3. A swirl stirring device according to claim 1, characterized in that: The fan blades (3) are fixedly connected to the lower surface of the connecting plate (5); the contact surfaces of the fan blades (3) and the connecting plate (5) are in contact with each other.

4. A swirl stirring device according to any one of claims 2-3, characterized in that: The connecting plate (5) is provided with a reinforcing member; the length of the reinforcing member extending toward the fan blade (3) is the same as the length of the connecting plate (5) extending toward the fan blade (3); and the reinforcing member is fixedly connected to the upper surface of the connecting plate (5).

5. A swirl stirring device according to claim 4, characterized in that: The reinforcing member is a reinforcing rib plate (4) vertically arranged on the upper surface of the connecting plate (5).

6. A swirl stirring device according to claim 4, characterized in that: The reinforcement is an arc-shaped spoiler (7) arranged on the upper surface of the connecting plate (5); the lower surface of the arc-shaped spoiler (7) is in contact with the upper surface of the connecting plate, and the upper surface of the arc-shaped spoiler (7) is arc-shaped.

7. A swirl stirring device according to claim 1, characterized in that: The inner wall of the shaft sleeve (2) is provided with a first step portion (8); and the inner wall of the stirring shaft and the base surface of the shaft sleeve are provided with a second step portion (9) matching the first step portion.

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