CN217856570U - Kneading type stator-rotor assembly for high dispersion and rotor structure thereof - Google Patents

Abstract

The utility model relates to a material dispersion technical field specifically is a mediate formula and decide rotor assembly and rotor structure for high dispersion, and it can effectively promote material transport capacity, guarantees dispersion efficiency and dispersion effect, and it includes rotor and stator, the rotor includes the disk body, the disk body center is provided with the axle sleeve, the axle sleeve outer peripheral face is provided with first blade, the first blade outside is provided with the rotor ring, be provided with the stator ring on the stator, the stator ring set up in the rotor ring is inboard or/and the outside, the rotor ring with the grid of interval arrangement has all been seted up on the stator ring, simultaneously, the utility model also provides a corresponding rotor structure.

Description

Kneading type stator-rotor assembly for high dispersion and rotor structure thereof

Technical Field

The utility model relates to a material dispersion technical field specifically is a formula of holding between fingers stator-rotor subassembly and rotor structure for high dispersion.

Background

In material dispersion equipment, decide the rotor subassembly and be wherein important part, the material passes through the stator and rotates and realize the dispersion with the shearing force that produces between the stator, the rotor generally all is that a plurality of blades constitute, in dispersion process, the blade on the rotor is followed to the material rotates, produce centrifugal force and flow toward the stator direction, produce through the speed difference and cut and disperse the material, when the material is more, the not enough problem of conveying capacity appears easily, the unable smooth and easy rotor of following of material is outwards seen off, influence dispersion efficiency and dispersion effect.

SUMMERY OF THE UTILITY MODEL

Poor in order to solve current rotor blade dispersion in-process material transport capacity, influence the problem of dispersion efficiency and dispersion effect, the utility model provides a formula of kneading with the fingers and decide rotor subassembly for high dispersion, it can effectively promote material transport capacity, guarantees dispersion efficiency and dispersion effect, simultaneously, the utility model discloses still provide corresponding rotor structure.

The technical scheme is as follows: the utility model provides a mediate formula and decide rotor subassembly for high dispersion, its includes rotor and stator, its characterized in that, the rotor includes the disk body, the disk body center is provided with the axle sleeve, the axle sleeve outer peripheral face is provided with first blade, the first blade outside is provided with the rotor ring, be provided with the stator ring on the stator, the stator ring set up in rotor ring inboard or/and outside, the rotor ring with the grid of interval arrangement has all been seted up on the stator ring.

The disc body is further characterized in that a second blade disconnected with the shaft sleeve is further arranged on the disc body and is positioned on the inner side of the rotor ring;

the first blade and the second blade are both backward-bent blades or radial blades;

one end of the second blade close to the shaft sleeve is a round angle;

the second blade is arranged between two adjacent first blades;

the total number of the first blades and the second blades is 4-12;

a powder scattering assembly and a solid-liquid dispersing ring are arranged above the rotor;

the grids are arranged radially;

the grids are all arranged in an inclined mode, the grids on the rotor ring are inclined towards the rotating direction of the first blades, and the inclination direction of the grids on the rotor ring is opposite to the inclination direction of the grids on the stator ring;

and a bottom scraping blade is arranged at the bottom of the rotor.

The utility model provides a rotor structure, its characterized in that, it includes the disk body, the disk body center is provided with the axle sleeve, the axle sleeve outer peripheral face is provided with first blade, the first blade outside is provided with the rotor ring, the grid has been seted up on the rotor ring.

The disc body is further characterized in that a second blade disconnected with the shaft sleeve is further arranged on the disc body and is positioned on the inner side of the rotor ring;

the first blade and the second blade are both backward bent blades or radial blades;

the second blade is arranged between two adjacent first blades.

After the utility model is adopted, the rotor is provided with the first blade extending out from the shaft sleeve, so that the material conveying capacity is good, the material can be smoothly taken out by the rotor and sent to the stator ring for shearing and dispersing, and the dispersing efficiency and the dispersing effect are ensured; furthermore, the rotor is also provided with a second blade disconnected with the shaft sleeve, the first blade extending out of the shaft sleeve drives the material to rotate, the material passes through a gap disconnected between the second blade and the shaft sleeve, great arc transition is realized, the flow field is smooth, efficiency-reducing flow field characteristics such as material blockage and vortex are avoided, the part of the material moving outwards under the centrifugal force passes through grids on the rotor ring and the stator ring, the part of the material flows along the gap between the stator ring and the rotor ring, and a great speed gradient exists between the high-speed rotor ring and the fixed stator ring, so that the liquid is sheared by a strong force, the dispersion effect is further improved on the whole, and the rotor is suitable for use; one end of the second blade close to the shaft sleeve is a round angle, so that the second blade is streamline in the radial direction, the material cannot be prevented from being thrown out along with centrifugal force, the flow field is maintained to be stable, the grid is obliquely arranged, the material generates a larger speed flow field when passing through the grid of the rotor ring, the material becomes a reduced speed flow field when passing through the grid of the stator ring, and a larger speed gradient is obtained to generate stronger shearing force.

Drawings

FIG. 1 is a schematic view of a stator-rotor assembly with a powder scattering assembly and a solid-liquid dispersing ring according to the present invention;

fig. 2 is a schematic cross-sectional view of the stator-rotor assembly of the present invention;

fig. 3 is a longitudinal sectional view of the stator/rotor assembly of the present invention;

FIG. 4 is an enlarged schematic view at U in FIG. 2 (with the direction of material flow);

FIG. 5 is an enlarged schematic view at V in FIG. 3 (with the direction of material flow);

fig. 6 is a schematic view of the rotor structure of the present invention.

Detailed Description

Referring to fig. 1 to 6, a kneading type stator and rotor assembly for high dispersion, which includes a rotor 1 and a stator 2, wherein the rotor 1 includes a disk 1-1, a shaft sleeve 1-2 is provided at the center of the disk 1-1, at least two first blades 1-3 are provided on the outer circumferential surface of the shaft sleeve 1-2, a second blade 1-4 disconnected from the shaft sleeve 1-2 is provided between the adjacent first blades 1-3, and the first blades 1-3 and the second blades 1-4 are arranged at intervals, in this embodiment, the first blades 1-3 and the second blades 1-4 are four, and two types of blades are half each, of course, the number of the first blades 1-3 and the second blades 1-4 can be freely combined, such as a combination of one third and two thirds, the first blades 1-3 can bring better conveying capacity, but are easy to block, and are suitable for high-viscosity or medium-high-solid content materials, and the second blades 1-4 can weaken conveying capacity, but are smooth, and are suitable for high-viscosity or solid content materials, i.e. different types of materials can be selected according to different ultrahigh-grade materials. One end of the second blade close to the shaft sleeve is a round angle; the second blades are streamlined in the radial direction, so that the materials cannot be prevented from being thrown out along with centrifugal force, and the stability of a flow field is maintained.

Rotor rings 1-5 are arranged on the outer sides of the first blades 1-3 and the second blades 1-4, stator rings 2-1 are arranged on the stator 2, in the embodiment, one rotor ring 1-5 is provided, two stator rings 2-1 are arranged at intervals, the two stator rings 2-1 are respectively arranged on the inner sides and the outer sides of the rotor rings 1-5, namely, one stator ring 2-1 is arranged between the first blades 1-3 (the second blades 1-4) and the rotor rings 1-5, and grids 3 which are uniformly arranged at intervals are respectively arranged on the rotor rings 1-5 and the stator rings 2-1.

The structure of the grid may be a radial arrangement or an inclined arrangement.

The embodiment provides an inclined arrangement structure, which specifically comprises: the grid 3 on the rotor ring 1-5 is inclined towards the direction of rotation of the first blades 1-3 and the grid 3 on the rotor ring 1-5 is inclined in the opposite direction to the inclination of the grid 3 on the stator ring 2-1, since this results in stronger shear forces, for the reasons that are analyzed below: referring to fig. 4, the direction of the fluid velocity at the tip of the first blade 1-3 and the second blade 1-4 of the rotor is first analyzed, and consists of a velocity u tangential to the circumferential direction and a radial throw-out velocity w tangential to the blade curve. The velocity u is related to the shear effect between the stator and rotor, and a larger value of u is generally used in the design to obtain a strong shear effect, while the velocity w is related to the velocity u but mainly determined by the design flow rate, so that in the design of the existing equipment, the value of w is much smaller than u, which makes the resultant velocity v (i.e. the actual liquid throwing speed) opposite to the inclination direction of the blades. The effect of the stator grid tilt direction was then analyzed: the design of the grid 3 of the stator is used for eliminating the tangential speed of a part of blades throwing fluid, so that the final passing speed of the blades is along the axis of the grid, the speed of the liquid is rapidly reduced when the liquid passes through the grid, the direction of the liquid is slightly changed, and a huge speed gradient is generated between the stator and the rotor to realize the shearing of the material. From the perspective of energy conversion, liquid obtains energy through the blades and is thrown out, the liquid impacts the stator, kinetic energy is converted into slurry internal energy or is dissipated through local vortexes, the temperature of the material rises when the internal energy is converted too much, the energy conversion rate of the mechanism is low when the vortexes are dissipated too much, and the collision strength between the liquid and the stator can be adjusted by adjusting the direction of the grid axis of the stator, so that the proportion of actual energy conversion is adjusted. However, if the axis of the grating is adjusted to be completely consistent with the liquid throwing-out direction, the impact is greatly reduced, the velocity gradient is reduced, and the shearing effect is deteriorated. Therefore, the axial angle of the stator grid is actually the result of the comprehensive consideration of the shearing effect, the slurry temperature rise and the mechanism efficiency.

Through experiments and simulation, we reach the following conclusion:

to the grid of the crooked direction slope of blade, can produce a large amount of vortexes for the energy conversion efficiency of whole mechanism is very low, so the utility model discloses do not adopt.

The grid inclining reversely to the bending direction of the blades has the highest energy conversion efficiency and small temperature rise, but has slightly poor corresponding shearing effect, and is suitable for various materials needing temperature rise control.

The grid which is not inclined has better shearing effect than a reverse inclined structure, but has low efficiency and high temperature rise, and is suitable for quickly preparing materials which are not sensitive to temperature rise.

Through experiments and simulation, we reach the following conclusion:

the grid inclined to the bending direction of the blades can generate a large amount of vortexes, so that the energy conversion efficiency of the whole mechanism is very low, and the slurry is not smoothly discharged, so that the invention is not adopted.

The grids which are reversely inclined towards the bending direction of the blades have the highest energy conversion efficiency and small temperature rise, but the shearing effect is poor.

The non-inclined stator grid is an optimal structure by comprehensively considering the shearing effect and the material discharge capacity.

The first blades 1-3 and the second blades 1-4 are backward-curved blades or radial blades, and the backward-curved blades are adopted in the embodiment.

A powder scattering assembly 4 and a solid-liquid dispersing ring 5 are arranged above the rotor 1; the bottom of the rotor 1 is provided with a bottom scraping blade 6.

During the dispersion process, the material flows to the flow shown in fig. 4 and 5, and besides flows outwards through the grids, the material also flows along the circuitous extrusion gap between the rotor and the stator, and the shearing of the material is realized by utilizing the speed difference between the stator and the rotor.

Claims (9)

1. The utility model provides a formula of kneading with fingers and barrel assembly for high dispersion, its characterized in that, the rotor includes the disk body, the disk body center is provided with the axle sleeve, the axle sleeve outer peripheral face is provided with first blade, the first blade outside is provided with the rotor ring, be provided with the stator ring on the stator, the stator ring set up in the rotor ring inboard or/and the outside, the rotor ring with the grid of interval arrangement all has been seted up on the stator ring.

2. A kneading type stator-rotor assembly for high dispersion according to claim 1 wherein the disc body is further provided with a second vane disconnected from the bushing, the second vane being located inside the rotor ring.

3. A kneading type stator-rotor assembly for high dispersion according to claim 2 wherein the first blade and the second blade are both backward curved blades or radial blades.

4. A kneading type rotor and stator assembly for high dispersion according to claim 2 wherein the second blade is arranged between two adjacent first blades, the end of the second blade near the shaft sleeve is rounded, and the total number of the first blade and the second blade is 4-12.

5. A kneading type stator-rotor assembly for high dispersion according to claim 1, wherein a powder breaking assembly and a solid-liquid dispersing ring are arranged above the rotor, and a bottom scraping blade is arranged at the bottom of the rotor.

6. A kneading type stator-rotor assembly for high dispersion according to claim 1 characterized in that the grids of the stator ring are arranged radially and the grids of the rotor ring are arranged obliquely.

7. The utility model provides a rotor structure, its characterized in that, it includes the disk body, the disk body center is provided with the axle sleeve, the axle sleeve outer peripheral face is provided with first blade, the first blade outside is provided with the rotor ring, the last grid of having seted up of rotor ring.

8. A rotor structure according to claim 7, wherein the disc body is further provided with second vanes disconnected from the bushing, the second vanes being located inside the rotor ring.

9. A rotor structure according to claim 8, wherein each of the first blades and the second blades is a backward curved blade or a radial blade, and the second blade is disposed between two adjacent first blades.

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