Slurry shearing structure and powder-liquid dispersion machine

Abstract

The utility model discloses a slurry shearing structure and a powder liquid dispersion machine, the slurry shearing structure comprises a plurality of dispersion rotors and dispersion stators which are stacked at intervals, a plurality of rotor overflowing holes are formed in the dispersion rotors, and a plurality of stator overflowing holes are formed in the dispersion stators; the dispersion rotor is provided with a rotor upper inclined surface and / or a rotor lower inclined surface, the dispersion stator is correspondingly provided with a stator lower inclined surface and / or a stator upper inclined surface, and the rotor upper inclined surface of the dispersion rotor is matched with the stator lower inclined surface of the dispersion stator; and the rotor lower inclined surface of the dispersion rotor is matched with the stator upper inclined surface of the dispersion stator. The disk surfaces of the dispersing rotor and the dispersing stator are provided with the inclined surfaces, so that materials can flow towards a high-speed area along the inclined surfaces, the materials are prevented from being left in a low-speed area, and the dispersing effect of the materials is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder-liquid mixing equipment, in particular to a slurry shearing structure and a powder-liquid dispersing machine. Background Art

[0002] Powder-liquid mixing equipment is a material mixing equipment that utilizes the high-speed rotation of the rotor to generate shear force between the rotor and the stator to achieve material dispersion and mixing to form a high-concentration and high-viscosity slurry.

[0003] Chinese patent CN219149796U discloses a multi-layer series axial flow slurry dispersion device and powder-liquid mixing device, wherein a plurality of layers of dispersion rotors and dispersion stators are arranged in the shell, and the flow holes of the dispersion rotors and dispersion stators are axially connected, and the liquid slurry flows through the flow holes of each layer of dispersion rotors and dispersion stators in turn along the axial direction for dispersion. This dispersion structure has the following problems: (1) The speed of the material on the dispersion rotor / dispersion stator gradually increases from the inside to the outside, that is, the inner area close to the central axis is a low-speed area, and the outer area away from the central axis is a high-speed area; since the upper and lower surfaces of the dispersion rotor and dispersion stator of this dispersion structure are both horizontal planes, during the dispersion process, the material is easy to remain in the low-speed area, thereby affecting the dispersion effect of the material. (2) The flow holes of the dispersion rotor and the dispersion stator are oblong holes with the same inner and outer cross-sectional areas. The slurry flow rate of the dispersion rotor and the dispersion stator in the high-speed area and the low-speed area is the same, which is not conducive to improving the dispersion efficiency of the slurry. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned existing slurry dispersion structure, the applicant provides a slurry shearing structure and a powder-liquid disperser with a reasonable structure to improve the dispersion effect and dispersion efficiency of the material.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A slurry shearing structure comprises a plurality of disperser rotors and disperser stators which are arranged in an interval and stacked manner, wherein a plurality of rotor flow holes are provided on the disperser rotor, and a plurality of stator flow holes are provided on the disperser stator; an upper rotor slope and / or a lower rotor slope are provided on the disperser rotor, and a lower stator slope and / or an upper stator slope are correspondingly provided on the disperser stator; the upper rotor slope of the disperser rotor matches the lower stator slope of the disperser stator; and the lower rotor slope of the disperser rotor matches the upper stator slope of the disperser stator.

[0007] As a further improvement of the above technical solution:

[0008] The upper inclined surface of the rotor and the lower inclined surface of the stator are inclined downward from the main shaft to the housing.

[0009] The lower inclined surface of the rotor and the upper inclined surface of the stator are inclined upward from the main shaft to the housing.

[0010] The included angle α between the upper inclined surface of the rotor, the lower inclined surface of the stator and the horizontal plane is 2-30°; the included angle β between the lower inclined surface of the rotor, the upper inclined surface of the stator and the horizontal plane is 2-30°.

[0011] The rotor flow holes and / or the stator flow holes are teardrop-shaped holes with a large outer cross-sectional area and a small inner cross-sectional area; the rotor flow holes and / or the stator flow holes are arranged eccentrically or concentrically.

[0012] A cooling groove is provided on the dispersion stator.

[0013] A powder-liquid disperser, wherein a slurry shearing structure is arranged in a dispersion cavity of a shell, a dispersion rotor is sleeved on a main shaft, and a dispersion stator is fixedly connected to the shell; a liquid inlet communicating with the dispersion cavity is arranged on the shell.

[0014] As a further improvement of the above technical solution:

[0015] A mixing assembly is arranged on the top of the shell, and the mixing assembly includes a mixing sleeve, a mixing impeller, an inner grille plate and an outer grille plate. The mixing chamber of the mixing sleeve is connected to the dispersion chamber of the shell, and the mixing impeller, the inner grille plate and the outer grille plate are arranged in the mixing chamber. A discharge port connected to the mixing chamber is opened on the mixing sleeve, and the mixing impeller sleeve is arranged on the main shaft.

[0016] The mixing impeller includes a central impeller body and an outer shear ring. The impeller body and the shear ring are connected by a connecting plate. The shear ring is provided with a plurality of first discharge holes; the inner grid plate is provided with a plurality of second discharge holes, and the outer grid plate is provided with a plurality of third discharge holes. The impeller body, the inner grid plate, the shear ring and the outer grid plate are arranged in sequence from the inside to the outside.

[0017] A cooling chamber, a cooling medium inlet and a cooling medium outlet are provided on the shell. The cooling chamber is isolated from the dispersion chamber, and the cooling medium inlet and the cooling medium outlet are connected to the cooling chamber. The cooling groove of the dispersion stator is connected to the cooling chamber. A powder inlet assembly is provided on the top of the mixing assembly. The powder inlet assembly includes a powder inlet barrel and a powder feeding assembly. The powder inlet barrel is connected to the mixing chamber, and the powder feeding assembly is inserted in the powder inlet barrel and sleeved on the main shaft. The inner grid plate and / or the outer grid plate of the mixing assembly are independently provided, or the inner grid plate and / or the outer grid plate are integrally formed at the bottom of the powder inlet barrel.

[0018] The beneficial effects of the utility model are as follows:

[0019] The utility model provides inclined surfaces on the discs of the dispersing rotor and the dispersing stator: on the one hand, the dispersing rotor and the dispersing stator have thicker thickness and strengthen the strength of the root. On the other hand, when the material is dispersed from the inside to the outside on the upper inclined surface of the rotor, the upper inclined surface of the rotor and the lower inclined surface of the stator rotate and cooperate, and the material generates an outward centrifugal force on the inclined surface, pushing the material from the low-speed area to the high-speed area, and the upper inclined surface of the rotor and the lower inclined surface of the stator are inclined downward from the low-speed area to the high-speed area, which is conducive to the material flowing along the inclined surface to the high-speed area, avoiding the material from remaining in the low-speed area, and improving the dispersion effect of the material; when the material is dispersed from the inside to the outside on the upper inclined surface of the stator, the lower inclined surface of the rotor and the upper inclined surface of the stator rotate and cooperate, because the lower inclined surface of the rotor and the upper inclined surface of the stator are inclined upward, the slurry dispersion has greater resistance, which is conducive to increasing the residence time of the slurry and the slurry dispersion effect is better.

[0020] The flow holes of the dispersion stator and the dispersion rotor of the utility model are teardrop-shaped holes that are large on the outside and small on the inside, so that the dispersion stator and the dispersion rotor have a higher flow area in the high-speed zone. The high-speed zone has a larger slurry flow rate than the low-speed zone. The material flows through more slurry from the high-speed zone, which is beneficial to improving the dispersion efficiency of the slurry.

[0021] The mixing impeller of the utility model has a shear ring added outside the impeller body, and the shear ring is nested between the inner grid plate and the outer grid plate, which strongly shears the mixed materials, which is beneficial to improve the mixing uniformity when the powder and liquid just come into contact, and further improves the dispersion mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the disperser of the utility model, and the shearing structure shown in the figure is a schematic diagram of the structure of the first embodiment.

[0023] Figure 2 FIG. 4 is a schematic structural diagram of a second embodiment of a shearing structure.

[0024] Figure 3 FIG. 4 is a schematic structural diagram of a third embodiment of a shear structure.

[0025] Figure 4 It is a schematic structural diagram of the first embodiment of the rotor / stator.

[0026] Figure 5 It is a schematic structural diagram of the second embodiment of the rotor / stator.

[0027] Figure 6 Schematic diagram of the cross-section structure of the mixing impeller.

[0028] Figure 7 A cross-sectional view of the hybrid component structure.

[0029] In the figure: 1. shell; 11. dispersion chamber; 12. liquid inlet; 13. cooling chamber; 14. cooling medium inlet; 15. cooling medium outlet; 2. main shaft; 3. dispersion rotor; 31. rotor flow hole; 32. rotor upper slope; 33. rotor lower slope; 4. dispersion stator; 41. stator flow hole; 42. stator upper slope; 43. stator lower slope; 44. cooling trough; 5. mixing assembly; 51. mixing sleeve; 52. mixing chamber; 53. discharge port; 54. mixing impeller; 541. impeller body; 542. shear ring; 5421. first discharge hole; 543. connecting plate; 55. inner grille plate; 551. second discharge hole; 56. outer grille plate; 561. third discharge hole; 6. powder inlet assembly; 61. powder inlet barrel; 62. powder delivery assembly. DETAILED DESCRIPTION

[0030] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0031] like Figure 1 As shown, the inner cavity of the housing 1 of the utility model is a dispersion chamber 11, in which a plurality of dispersion rotors 3 and dispersion stators 4 are stacked and arranged axially at intervals, the dispersion rotors 3 are fixedly sleeved on the main shaft 2, and the dispersion stator 4 is fixedly connected to the housing 1; the main shaft 2 passes through the bottom of the housing 1 and is connected to the driving mechanism (not shown in the figure), and the driving mechanism drives the plurality of dispersion rotors 3 to rotate at high speed through the main shaft 2. A liquid inlet 12 is provided at the bottom of the housing 1, and the liquid inlet 12 is connected to the dispersion chamber 11. A mixing assembly 5 is provided at the top of the housing 1, and a powder inlet assembly 6 is provided at the top of the mixing assembly 5.

[0032] A cooling chamber 13 is provided on the shell 1, located at the periphery of the dispersion chamber 11, and the cooling chamber 13 is isolated from the dispersion chamber 11. A cooling medium inlet 14 and a cooling medium outlet 15 connected to the cooling chamber 13 are provided on the shell 1. The cooling medium enters the cooling chamber 13 from the cooling medium inlet 14 and flows out from the cooling medium outlet 15, and continuously circulates to cool the material in the dispersion chamber 11. A cooling groove 44 is provided on the dispersion stator 4, and the cooling groove 44 is connected to the cooling chamber 13. The cooling medium can enter the cooling groove 44, which is beneficial to improving the cooling effect and cooling efficiency.

[0033] The dispersion rotor 3 and the dispersion stator 4 rotate relative to each other to form a shearing structure. The surface of the dispersion rotor 3 is provided with a plurality of rotor flow holes 31, and the surface of the dispersion stator 4 is provided with a plurality of stator flow holes 41. Figure 4 , Figure 5 As shown, the rotor flow hole 31 / stator flow hole 41 is a teardrop-shaped hole with a large outer cross-sectional area and a small inner cross-sectional area. The rotor flow hole 31 / stator flow hole 41 can be arranged eccentrically ( Figure 4 ), or they can be arranged concentrically ( Figure 5). The flow holes of the dispersion stator 3 and the dispersion rotor 4 are drop-shaped holes with large outside and small inside, so that the dispersion stator 3 and the dispersion rotor 4 have a higher flow area in the high-speed zone. The high-speed zone has a larger slurry flow rate than the low-speed zone. The material flows through more slurry from the high-speed zone, which is beneficial to improve the dispersion efficiency of the slurry.

[0034] The dispersion rotor 3 and the dispersion stator 4 are both dispersion disks with thick packing and thin disk surface. Figure 1 As shown, in this embodiment, the upper disk surface of the dispersion rotor 3 is provided with a rotor upper inclined surface 32, and the lower disk surface is provided with a rotor lower inclined surface 33. The upper disk surface of the dispersion stator 4 is provided with a stator upper inclined surface 42, and the lower disk surface is provided with a stator lower inclined surface 43. The rotor upper inclined surface 32 of the dispersion rotor 3 matches the stator lower inclined surface 43 of the dispersion stator 4 adjacent to the upper side, and the rotor lower inclined surface 33 of the dispersion rotor 3 matches the stator upper inclined surface 42 of the dispersion stator 4 adjacent to the lower side. Figure 2 As shown, in another embodiment, the dispersion rotor 3 may be provided with a rotor upper inclined surface 32 only on the upper disk surface, and the lower disk surface is a horizontal disk surface; the lower disk surface of the dispersion stator 4 adjacent to the upper side of the dispersion rotor 3 is correspondingly provided with a stator lower inclined surface 43, and the upper disk surface of the dispersion stator 4 is a horizontal disk surface. Figure 3 As shown, in another embodiment, the dispersion rotor 3 may also be provided with a rotor lower inclined surface 33 only on the lower disk surface, and the upper disk surface is a horizontal disk surface; the upper disk surface of the dispersion stator 4 adjacent to the lower side of the dispersion rotor 3 is correspondingly provided with a stator upper inclined surface 42, and the lower disk surface of the dispersion stator 4 is a horizontal disk surface. The rotor upper inclined surface 32 and the stator lower inclined surface 43 are inclined downward from the main shaft 2 to the housing 1, and the angle α between the rotor upper inclined surface 32 and the stator lower inclined surface 43 and the horizontal plane is 2-30°; the rotor lower inclined surface 33 and the stator upper inclined surface 42 are inclined upward from the main shaft 2 to the housing 1, and the angle β between the rotor lower inclined surface 33 and the stator upper inclined surface 42 and the horizontal plane is 2-30°. The inclined surface is provided on the disk surface of the dispersion rotor 3 and the dispersion stator 4: on the one hand, the dispersion rotor 3 / dispersion stator 4 has a thicker thickness and the strength of the root is strengthened. On the other hand, when the material is dispersed from the inside to the outside on the upper inclined surface 32 of the rotor, the upper inclined surface 32 of the rotor and the lower inclined surface 43 of the stator rotate and cooperate, and the material generates an outward centrifugal force on the inclined surface, pushing the material from the low-speed area to the high-speed area, and the upper inclined surface 32 of the rotor and the lower inclined surface 43 of the stator are inclined downward from the low-speed area to the high-speed area, which is conducive to the material flowing along the inclined surface to the high-speed area, avoiding the material from remaining in the low-speed area, and improving the dispersion effect of the material; when the material is dispersed from the inside to the outside on the upper inclined surface 42 of the stator, the lower inclined surface 33 of the rotor and the upper inclined surface 42 of the stator rotate and cooperate, because the lower inclined surface 33 of the rotor and the upper inclined surface 42 of the stator are inclined upward, the slurry dispersion has a greater resistance, which is conducive to increasing the residence time of the slurry and the slurry dispersion effect is better.

[0035] like Figure 1 , Figure 6 , Figure 7 As shown, the mixing assembly 5 includes a mixing sleeve 51, a mixing impeller 54, an inner grille plate 55 and an outer grille plate 56. The mixing chamber 52 of the mixing sleeve 51 is connected to the dispersion chamber 11 of the housing 1. The mixing impeller 54, the inner grille plate 55 and the outer grille plate 56 are arranged in the mixing chamber 52. The mixing sleeve 51 is provided with a discharge port 53 connected to the mixing chamber 52. The mixing impeller 54 is sleeved on the main shaft 2. The mixing impeller 54 includes a central impeller body 541 and a peripheral shear ring 542. The impeller body 541 and the shear ring 542 are connected as a whole through a connecting plate 543 at the bottom. The shear ring 542 is provided with a plurality of first discharge holes 5421. The inner grid plate 55 and the outer grid plate 56 are fixedly arranged, a plurality of second discharge holes 551 are provided on the inner grid plate 55, a plurality of third discharge holes 561 are provided on the outer grid plate 56, and the impeller body 541, the inner grid plate 55, the shear ring 542, and the outer grid plate 56 are arranged in sequence from the inside to the outside. The mixing impeller 54 is additionally provided with a shear ring 542 outside the impeller body 541, and the shear ring 542 is nested between the inner grid plate 55 and the outer grid plate 56, and the mixed materials are strongly sheared, which is beneficial to improve the mixing uniformity when the powder and liquid just come into contact, and further improve the dispersion mixing effect.

[0036] like Figure 1 As shown, the powder feeding assembly 6 includes a powder feeding barrel 61 and a powder delivery assembly 62 . The powder feeding barrel 61 is connected to the mixing chamber 52 , and the powder delivery assembly 62 is inserted into the powder feeding barrel 61 and sleeved on the main shaft 2 .

[0037] The inner grid plate 55 and the outer grid plate 56 of the mixing assembly 5 can be provided as separate parts independently, or the inner grid plate 55 and the outer grid plate 56 can be directly opened at the bottom of the powder inlet tube 61 as a part of the powder inlet tube 61 .

[0038] When the utility model is actually used, the driving mechanism drives the several layers of dispersion rotors 3, the mixing impellers 54 and the powder feeding assembly 62 to rotate at high speed through the main shaft 2; the liquid slurry enters the dispersion chamber 11 from the liquid inlet 12, flows through the multiple layers of dispersion rotors 3 and the dispersion stators 4 in sequence along the axial direction, and then enters the mixing chamber 52 after being dispersed; the powder is transported from the powder inlet tube 61 to the mixing chamber 52; the liquid slurry and the powder are evenly mixed in the mixing chamber 52 by the mixing impeller 54, the inner grid plate 55 and the outer grid plate 56, and then output from the discharge port 53.

[0039] The above description is an explanation of the utility model, not a limitation of the utility model. The utility model can be modified in any form without violating the spirit of the utility model.

Claims

1. A slurry shearing structure, comprising a plurality of disperser rotors (3) and disperser stators (4) arranged in a stacked manner, wherein a plurality of rotor flow holes (31) are provided on the disperser rotor (3), and a plurality of stator flow holes (41) are provided on the disperser stator (4); characterized in that: The dispersion rotor (3) is provided with a rotor upper slope (32) and / or a rotor lower slope (33), and the dispersion stator (4) is correspondingly provided with a stator lower slope (43) and / or a stator upper slope (42), and the rotor upper slope (32) of the dispersion rotor (3) matches the stator lower slope (43) of the dispersion stator (4); The rotor lower slope (33) of the dispersion rotor (3) matches the stator upper slope (42) of the dispersion stator (4).

2. The slurry shearing structure according to claim 1, characterized in that: The rotor upper inclined surface (32) and the stator lower inclined surface (43) are inclined downward from the main shaft (2) toward the housing (1).

3. The slurry shearing structure according to claim 1, characterized in that: The rotor lower inclined surface (33) and the stator upper inclined surface (42) are inclined upward from the main shaft (2) toward the housing (1).

4. The slurry shearing structure according to claim 2 or 3, characterized in that: The included angle α between the rotor upper inclined surface (32), the stator lower inclined surface (43) and the horizontal plane is 2-30°; the included angle β between the rotor lower inclined surface (33), the stator upper inclined surface (42) and the horizontal plane is 2-30°.

5. The slurry shearing structure according to claim 1, characterized in that: The rotor flow holes (31) and / or the stator flow holes (41) are teardrop-shaped holes with a large outer cross-sectional area and a small inner cross-sectional area; the rotor flow holes (31) and / or the stator flow holes (41) are arranged eccentrically or concentrically.

6. The slurry shearing structure according to claim 1, characterized in that: A cooling groove (44) is provided on the dispersion stator (4).

7. A powder-liquid dispersing machine, characterized in that: The slurry shearing structure described in claim 1 is arranged in a dispersion chamber (11) of a shell (1), a dispersion rotor (3) is sleeved on the main shaft (2), and a dispersion stator (4) is fixedly connected to the shell (1); a liquid inlet (12) connected to the dispersion chamber (11) is provided on the shell (1).

8. The powder-liquid dispersing machine according to claim 7, characterized in that: A mixing assembly (5) is arranged on the top of the housing (1); the mixing assembly (5) comprises a mixing sleeve (51), a mixing impeller (54), an inner grille plate (55) and an outer grille plate (56); a mixing chamber (52) of the mixing sleeve (51) is connected to a dispersion chamber (11) of the housing (1); the mixing impeller (54), the inner grille plate (55) and the outer grille plate (56) are arranged in the mixing chamber (52); a discharge port (53) connected to the mixing chamber (52) is provided on the mixing sleeve (51); and the mixing impeller (54) is sleeved on the main shaft (2).

9. The powder-liquid dispersing machine according to claim 8, characterized in that: The mixing impeller (54) comprises a central impeller body (541) and a peripheral shear ring (542); the impeller body (541) and the shear ring (542) are connected via a connecting plate (543); a plurality of first discharge holes (5421) are provided on the shear ring (542); a plurality of second discharge holes (551) are provided on the inner grille plate (55); a plurality of third discharge holes (561) are provided on the outer grille plate (56); the impeller body (541), the inner grille plate (55), the shear ring (542), and the outer grille plate (56) are arranged in sequence from the inside to the outside.

10. The powder-liquid dispersing machine according to claim 7, characterized in that: The shell (1) is provided with a cooling chamber (13), a cooling medium inlet (14), and a cooling medium outlet (15); the cooling chamber (13) and the dispersion chamber (11) are isolated from each other, and the cooling medium inlet (14) and the cooling medium outlet (15) are in communication with the cooling chamber (13); the cooling groove (44) of the dispersion stator (4) is in communication with the cooling chamber (13); a powder inlet assembly (6) is provided on the top of the mixing assembly (5); the powder inlet assembly (6) comprises a powder inlet barrel (61) and a powder delivery assembly (62); the powder inlet barrel (61) is in communication with the mixing chamber (52), and the powder delivery assembly (62) is inserted into the powder inlet barrel (61) and sleeved on the main shaft (2); the inner grille plate (55) and / or the outer grille plate (56) of the mixing assembly (5) are independently provided, or the inner grille plate (55) and / or the outer grille plate (56) are integrally formed at the bottom of the powder inlet barrel (61).

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