Powder-liquid mixing and dispersing system

Abstract

The utility model discloses a powder-liquid mixing and dispersing system which is characterized in that a powder-liquid mixing machine and a first slurry tank are connected in series on a mixing circulation line of a mixing system and a dispersing system, a liquid inlet of the powder-liquid mixing machine is connected with an outlet of the first slurry tank, and a discharge port of the powder-liquid mixing machine is connected to an inlet of the first slurry tank; a powder inlet of the powder-liquid mixer is connected with the powder subsystem; an online dispersion line of the dispersion system is connected to the mixed circulation line, an online dispersion machine and a second slurry tank are connected to the online dispersion line in series, the feeding end of the online dispersion machine is connected to the mixed circulation line, and the discharging end of the online dispersion machine is connected to an inlet of the second slurry tank. According to the utility model, powder and liquid are circularly mixed through the mixing system to obtain semi-finished slurry, and the semi-finished slurry is dispersed on line through the dispersing system, so that the mixing and dispersing efficiency is improved, the quality of the slurry is improved, and the slurry treatment efficiency is also improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pulp making technical field especially a powder liquid mixing dispersion system. BACKGROUND

[0002] The pulp making system is used for powder liquid mixing and slurry dispersion, and meets the production demand of high-quality slurry with low viscosity, high solid content and high stability.

[0003] When the high-speed pulp making system prepares slurry, it needs to complete two processes of powder liquid mixing and slurry dispersion respectively, and in the pulp making process, not only the effect of powder liquid mixing should be considered, but also the ability of slurry dispersion should be considered. The powder liquid mixing effect and slurry dispersion effect of the existing pulp making system are not ideal enough, which affects the quality of slurry. UTILITY MODEL CONTENT

[0004] In view of the shortcomings that the mixing and dispersion effects of the existing pulp making system are not ideal enough, the applicant provides a powder liquid mixing dispersion system with reasonable structure, improves the mixing and dispersion effects, and improves the quality of slurry.

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

[0006] A powder liquid mixing dispersion system, a mixing system and a dispersion system, a powder liquid mixing machine and a first slurry tank are connected in series on a mixing circulation line of the mixing system, a liquid inlet of the powder liquid mixing machine is connected to an outlet of the first slurry tank, a discharge port of the powder liquid mixing machine is connected to an inlet of the first slurry tank, and a powder inlet of the powder liquid mixing machine is connected to a powder subsystem.

[0007] An online dispersion line of the dispersion system is connected to the mixing circulation line, and an online dispersion machine and a second slurry tank are connected in series on the online dispersion line, a feeding end of the online dispersion machine is connected to the mixing circulation line, and a discharging end of the online dispersion machine is connected to an inlet of the second slurry tank.

[0008] As a further improvement of the above technical scheme:

[0009] The dispersion system is connected between the liquid inlet of the powder liquid mixing machine and the outlet of the first slurry tank, or connected between the discharge port of the powder liquid mixing machine and the inlet of the first slurry tank.

[0010] A mixing rotor pump and a mixing cooler are connected between the outlet of the first slurry tank and the liquid inlet of the powder liquid mixing machine, a first valve is connected between the mixing cooler and the powder liquid mixing machine, the online dispersion line is connected between the mixing cooler and the first valve, and a second valve is connected to a starting end of the online dispersion line.

[0011] The shell assembly of the online dispersion machine is provided with a dispersion cavity, and a plurality of stages of dispersion units are arranged in the dispersion cavity, and the adjacent stages of dispersion units have overflow channels; each stage of dispersion units comprises at least one set of dispersion assemblies, each set of dispersion assemblies comprises a set of matching dispersion stators and dispersion rotors, the dispersion stators are fixed on the shell assembly, the dispersion rotors are sleeved on the main shaft, and the main shaft is connected to the driving mechanism.

[0012] Each stage of dispersion units comprises two sets of dispersion assemblies, the two sets of dispersion assemblies are arranged reversely, the dispersion rotors of the two sets of dispersion assemblies are arranged back to back, and the dispersion stators are arranged face to face; first separation sleeves are arranged between the two dispersion stators of each stage of dispersion units; the dispersion stators of each stage of dispersion units are arranged back to back with the dispersion stators of the adjacent stages of dispersion units, and second separation sleeves are arranged between the dispersion rotors of each stage of dispersion units and the dispersion rotors of the adjacent stages of dispersion units.

[0013] The arrangement directions of the dispersion assemblies of each stage of dispersion units are the same; first separation sleeves are arranged between the dispersion stators of each stage of dispersion units and the dispersion stators of the adjacent stages of dispersion units, and second separation sleeves are arranged between the dispersion rotors of each stage of dispersion units and the dispersion rotors of the adjacent stages of dispersion units.

[0014] The dispersion stator comprises a stator transverse plate and a plurality of stator rings perpendicular to the stator transverse plate, and a plurality of stator dispersion channels are formed in the stator rings; the dispersion rotor comprises a rotor transverse plate and a plurality of rotor rings perpendicular to the rotor transverse plate, and a plurality of rotor dispersion channels are formed in the rotor rings; the stator dispersion channels and the rotor dispersion channels are dispersion holes or dispersion grooves.

[0015] A pulp inlet is formed in the center of the end face of one end of the shell assembly, and a pulp outlet is formed in the circumferential wall face of the other end; a conical surface is formed in the shell assembly and corresponds to the inner side of the pulp inlet, and the small-diameter end of the conical surface is connected to the pulp inlet.

[0016] The online dispersion machine adopts a horizontal dispersion device or a vertical dispersion device.

[0017] The first pulp tank and the second pulp tank are respectively provided with stirring components and dispersion components; the powder subsystem is provided with a powder bin, and the powder bin is connected to the powder inlet of the powder-liquid mixing machine through a discharging assembly.

[0018] The online dispersion machine has the following beneficial effects:

[0019] The powder-liquid is cyclically mixed by the mixing system to obtain semi-finished pulp, and the semi-finished pulp is dispersed online by the dispersion system, the dispersion system disperses the pulp through a plurality of stages of dispersion units of the online dispersion machine, the mixing and dispersion efficiency is improved, the quality of the pulp is improved, and after the pulp is dispersed by the online dispersion machine, the pulp is directly sent out after being further dispersed in the second pulp tank, so that the dispersion effect of the pulp is ensured, and the pulp processing efficiency is improved.

[0020] The two groups of dispersion assemblies of each stage dispersion unit are reversely arranged, the slurry flow direction is opposite to the centrifugal force direction generated by the dispersion rotor rotation, the slurry can stay in the dispersion area for a longer time, the dispersion time is longer, and the dispersion is more sufficient and better. The dispersion assemblies of each stage dispersion unit are arranged in the same direction, the slurry flow direction is same as the centrifugal force direction generated by the dispersion rotor rotation, greater flow and passability can be obtained, and the cavity pressure can be reduced. According to actual process requirements of products, the dispersion assemblies of each stage dispersion unit can be arranged in the same direction or reversely arranged, so that the material is fully dispersed, and meanwhile, higher dispersion efficiency is obtained. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the utility model.

[0022] Figure 2 It is a structure schematic view of the first embodiment of the online dispersion machine.

[0023] Figure 3 It is a structure schematic view of the second embodiment of the online dispersion machine.

[0024] In the figure: 100, mixing system;101, mixing circulation line;102, first valve;1, powder-liquid mixing machine;11, powder inlet;12, liquid inlet;13, discharge port;2, powder subsystem;21, powder bin;22, discharging assembly;3, first slurry tank;31, first stirring part;32, first dispersion part;4, mixing rotor pump;5, mixing cooler;

[0025] 200, dispersion system;201, online dispersion line;202, second valve;6, online dispersion machine;61, shell assembly;611, dispersion cavity;612, slurry inlet;613, slurry outlet;614, conical surface;62, dispersion stator;621, stator transverse plate;622, stator ring;623, stator dispersion channel;63, dispersion rotor;631, rotor transverse plate;632, rotor ring;633, rotor dispersion channel;64, first spacer sleeve;65, second spacer sleeve;66, main shaft;67, driving mechanism;68, flow passage;7, second slurry tank;71, second stirring part;72, second dispersion part. DETAILED DESCRIPTION

[0026] The specific embodiment of the utility model is described below in combination with the drawings.

[0027] As Figure 1 shown, the system includes mixing system 100 and dispersion system 200, and powder and liquid are fully mixed in mixing system 100 to obtain semi-finished slurry, and the semi-finished slurry is sent to dispersion system 200 for full dispersion to obtain finished slurry.

[0028] The mixing system 100 mixes and processes the powder liquid through the mixing circulation line 101. The mixing system 100 comprises a powder liquid mixer 1, a powder subsystem 2, a first slurry tank 3, a mixing rotor pump 4, and a mixing cooler 5. The powder subsystem 2 is connected to the powder liquid mixer 1. The powder liquid mixer 1, the first slurry tank 3, the mixing rotor pump 4, and the mixing cooler 5 are sequentially connected in series along a slurry processing direction on the mixing circulation line 101. The mixing cooler 5 is connected with the powder liquid mixer 1 through a first valve 102.

[0029] The powder liquid mixer 1 is provided with a powder inlet 11, a liquid inlet 12, and a discharge outlet 13. The discharge outlet 13 of the powder liquid mixer 1 is connected to an inlet of the first slurry tank 3 through a pipeline. An outlet of the first slurry tank 3 is sequentially connected to the mixing rotor pump 4 and the mixing cooler 5 through a pipeline. The mixing cooler 5 is connected to the liquid inlet 12 of the powder liquid mixer 1 through a pipeline to form the mixing circulation line 101. The powder subsystem 2 is provided with a powder bin 21 connected to the powder inlet 11 of the powder liquid mixer 1 through a discharging assembly 22. The first slurry tank 3 is provided with a first stirring component 31 and a first dispersing component 32. The first stirring component 31 stirs the slurry, and the first dispersing component 32 preliminarily disperses the slurry to make the powder liquid mixing more sufficient and the mixing effect better.

[0030] The dispersing system 200 disperses and processes the semi-finished slurry through an online dispersing line 201 connected to the mixing circulation line 101 between the mixing cooler 5 and the first valve 102. The online dispersing line 201 is provided with a second valve 202 at a starting end thereof. The dispersing system 200 comprises an online dispersing machine 6 and a second slurry tank 7. The online dispersing machine 6 and the second slurry tank 7 are sequentially connected in series along the slurry processing direction on the online dispersing line 201. An inlet end of the online dispersing machine 6 is connected to the mixing circulation line 101, and a discharge end of the online dispersing machine 6 is connected to an inlet of the second slurry tank 7. In other embodiments, the dispersing system 200 is connected between the discharge outlet 13 of the powder liquid mixer 1 and the inlet of the first slurry tank 3.

[0031] The second slurry tank 7 is provided with a second stirring component 71 and a second dispersing component 72. The second stirring component 71 stirs the slurry, and the second dispersing component 72 further disperses the slurry to make the slurry dispersion more sufficient and the dispersing effect better.

[0032] The online dispersing machine 6 adopts a horizontal dispersing device or a vertical dispersing device.

[0033] As Figure 2 , Figure 3As shown, the online dispersion machine 6 comprises a housing assembly 61, several stages of dispersion units, a main shaft 66 and a driving mechanism 67. The housing assembly 61 is internally provided with a dispersion cavity 611, the main shaft 66 penetrates through the central end face of the housing assembly 61 and extends into the dispersion cavity 611, and the other end of the main shaft 66 is connected to the driving mechanism 67. The central end face of one end of the housing assembly 61 is provided with a pulp inlet 612, and the circumferential wall surface of the other end is provided with a pulp outlet 613, and the pulp inlet 612 and the pulp outlet 613 communicate with the dispersion cavity 611. The housing assembly 61 is internally provided with a tapered surface 614 corresponding to the inner side of the pulp inlet 612, the small-diameter end of the tapered surface 614 is connected to the pulp inlet 612, the tapered surface 614 has a flow guiding effect on the slurry and guides the slurry to flow to the dispersion assembly, thereby improving the dispersion efficiency. The several stages of dispersion units are arranged in series in the dispersion cavity 611 of the housing assembly 61 from the pulp inlet end to the pulp outlet end, and have flow passages 68 between adjacent stages of dispersion units. Each stage of dispersion units comprises at least one set of dispersion assemblies, each set of dispersion assemblies comprises a set of dispersion stator 62 and dispersion rotor 63 that cooperate with each other, the dispersion stator 62 is fixed on the housing assembly 61, and the dispersion rotor 63 is sleeved on the main shaft 66 and can rotate at high speed with the main shaft 66. The dispersion stator 62 comprises a stator transverse plate 621 and a plurality of stator rings 622 perpendicular to the stator transverse plate 621, and a plurality of stator dispersion channels 623 are uniformly arranged on the stator rings 622 in the circumferential direction. The dispersion rotor 63 comprises a rotor transverse plate 631 and a plurality of rotor rings 632 perpendicular to the rotor transverse plate 631, and a plurality of rotor dispersion channels 633 are uniformly arranged on the rotor rings 632 in the circumferential direction. The stator dispersion channels 623 and the rotor dispersion channels 633 are dispersion holes or dispersion grooves.

[0034] Figure 2 A first embodiment of the online dispersion machine 6 is shown. In this example, in addition to the topmost stage of dispersion units comprising one set of dispersion assemblies, each stage of dispersion units comprises two sets of dispersion assemblies. The two sets of dispersion assemblies of each stage of dispersion units are arranged in reverse, the dispersion rotors 63 of the two sets of dispersion assemblies are arranged back-to-back, and the dispersion stators 62 are arranged face-to-face, and a first spacer sleeve 64 is arranged between the two dispersion stators 62 for axial positioning. The dispersion stators 62 of each stage of dispersion units are arranged back-to-back with the dispersion stators 62 of adjacent stages of dispersion units, and a second spacer sleeve 65 is arranged between the dispersion rotors 63 of each stage of dispersion units and the dispersion rotors 63 of adjacent stages of dispersion units for axial positioning. The two sets of dispersion assemblies of each stage of dispersion units are arranged in reverse, the direction of slurry flow is opposite to the direction of centrifugal force generated by the rotation of the dispersion rotor 63, which can make the slurry stay in the dispersion area for a longer time, the dispersion time is longer, the dispersion is more sufficient, and the effect is better.

[0035] Figure 3The second embodiment of the online dispersion machine 6 is shown. In the embodiment, each stage of dispersion unit comprises a set of dispersion components, the dispersion components of each stage of dispersion unit are arranged in the same direction, the dispersion stator 62 of each stage of dispersion unit is axially positioned by the first spacer sleeve 64 from the dispersion stator 62 of the adjacent stage of dispersion unit, and the dispersion rotor 63 of each stage of dispersion unit is axially positioned by the second spacer sleeve 65 from the dispersion rotor 63 of the adjacent stage of dispersion unit. The dispersion components of each stage of dispersion unit are arranged in the same direction, the pulp flow direction is the same as the centrifugal force direction generated by the rotation of the dispersion rotor 63, greater flow and passability can be obtained, and the cavity pressure can be reduced.

[0036] According to the actual process requirements of the product, the dispersion components of each stage of dispersion unit can be arranged in the same direction or in the opposite direction, so that the material is sufficiently dispersed and has high dispersion efficiency.

[0037] In actual use, the utility model is divided into two processes of mixing and dispersion: firstly, the mixing system 100 mixes the pulp, the first valve 102 is opened, the second valve 202 is closed, the powder is gradually sent to the powder-liquid mixing machine 1 from the powder subsystem 2, the liquid of the first pulp tank 3 flows through the mixing rotor pump 4 and the mixing cooler 5 and is sent to the powder-liquid mixing machine 1 to be mixed with the powder to form the pulp, and then is sent to the first pulp tank 3, circulates along the mixing circulation line 101, and until all the powder and liquid are fully mixed to obtain the semi-finished pulp. Then, the dispersion system 200 disperses the pulp, the first valve 102 is closed, the second valve 202 is opened, the semi-finished pulp of the first pulp tank 3 flows through the mixing rotor pump 4 and the mixing cooler 5 and is sent to the dispersion system 200, is sent to the second pulp tank 7 for further dispersion after being dispersed online by the online dispersion machine 6 along the online dispersion line 201, and is sent to the subsequent process from the second pulp tank 7.

[0038] The utility model circulates and mixes the powder-liquid by the mixing system 100 to obtain the semi-finished pulp, disperses the semi-finished pulp by the dispersion system 200, disperses the pulp by the several stages of dispersion unit of the online dispersion machine 6 in the dispersion system 200, improves the mixing and dispersion efficiency, improves the quality of the pulp, and directly sends out the pulp after being dispersed by the online dispersion machine 6 and being further dispersed in the second pulp tank 7, which guarantees the dispersion effect of the pulp and improves the processing efficiency of the pulp.

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

Claims

1. A powder-liquid mixing and dispersing system, comprising a mixing system (100) and a dispersing system (200), characterized in that: A powder-liquid mixer (1) and a first slurry tank (3) are connected in series on the mixing circulation line (101) of the mixing system (100). The liquid inlet (12) of the powder-liquid mixer (1) is connected to the outlet of the first slurry tank (3), the discharge outlet (13) of the powder-liquid mixer (1) is connected to the inlet of the first slurry tank (3), and the powder inlet (11) of the powder-liquid mixer (1) is connected to the powder subsystem (2). The online dispersion line (201) of the dispersion system (200) is connected to the mixing circulation line (101). The online dispersion line (201) is connected in series with the online disperser (6) and the second slurry tank (7). The feed end of the online disperser (6) is connected to the mixing circulation line (101), and the discharge end of the online disperser (6) is connected to the inlet of the second slurry tank (7).

2. The powder-liquid mixing and dispersion system according to claim 1, characterized in that: The dispersion system (200) is connected between the liquid inlet (12) of the powder-liquid mixer (1) and the outlet of the first slurry tank (3), or between the discharge outlet (13) of the powder-liquid mixer (1) and the inlet of the first slurry tank (3).

3. The powder-liquid mixing and dispersion system according to claim 1, characterized in that: A mixing rotor pump (4) and a mixing cooler (5) are connected between the outlet of the first slurry tank (3) and the inlet (12) of the powder-liquid mixer (1). A first valve (102) is connected between the mixing cooler (5) and the powder-liquid mixer (1). An online dispersion line (201) is connected between the mixing cooler (5) and the first valve (102). A second valve (202) is connected to the starting end of the online dispersion line (201).

4. The powder-liquid mixing and dispersion system according to claim 1, characterized in that: The online disperser (6) has a dispersion chamber (611) inside the housing assembly (611), and several dispersion units are provided inside the dispersion chamber (611). There is a flow passage (68) between adjacent dispersion units. Each dispersion unit includes at least one set of dispersion components. Each set of dispersion components includes a set of mutually cooperating dispersion stators (62) and dispersion rotors (63). The dispersion stators (62) are fixed on the housing assembly (61), and the dispersion rotors (63) are sleeved on the main shaft (66). The main shaft (66) is connected to the drive mechanism (67).

5. The powder-liquid mixing and dispersion system according to claim 3, characterized in that: Each level of the dispersion unit includes two sets of dispersion components, which are arranged in opposite directions. The dispersion rotors (63) of the two sets of dispersion components are arranged back to back, while the dispersion stators (62) are arranged face to face. A first spacer (64) is provided between the two dispersion stators (62) of each level of the dispersion unit. The dispersion stators (62) of each level of the dispersion unit are arranged back to back with the dispersion stators (62) of the adjacent level of the dispersion unit. A second spacer (65) is provided between the dispersion rotor (63) of each level of the dispersion unit and the dispersion rotor (63) of the adjacent level of the dispersion unit.

6. The powder-liquid mixing and dispersion system according to claim 3, characterized in that: The dispersion components of each dispersion unit are arranged in the same direction; a first spacer (64) is provided between the dispersion stator (62) of each dispersion unit and the dispersion stator (62) of the adjacent dispersion unit, and a second spacer (65) is provided between the dispersion rotor (63) of each dispersion unit and the dispersion rotor (63) of the adjacent dispersion unit.

7. The powder-liquid mixing and dispersion system according to claim 3, characterized in that: The distributed stator (62) includes a stator cross plate (621) and several stator rings (622) perpendicular to the stator cross plate (621), and several stator dispersion channels (623) are opened on the stator rings (622); the distributed rotor (63) includes a rotor cross plate (631) and several rotor rings (632) perpendicular to the rotor cross plate (631), and several rotor dispersion channels (633) are opened on the rotor rings (632); the stator dispersion channels (623) and the rotor dispersion channels (633) are dispersion holes or dispersion grooves.

8. The powder-liquid mixing and dispersion system according to claim 3, characterized in that: A slurry inlet (612) is provided at the center of the end face of one end of the shell assembly (61), and a slurry outlet (613) is provided on the circumferential wall of the other end; a conical surface (614) is provided inside the shell assembly (61) corresponding to the inner side of the slurry inlet (612), and the small diameter end of the conical surface (614) is connected to the slurry inlet (612).

9. The powder-liquid mixing and dispersion system according to claim 3, characterized in that: The online disperser (6) adopts a horizontal or vertical disperser.

10. The powder-liquid mixing and dispersion system according to claim 1, characterized in that: The first slurry tank (3) and the second slurry tank (7) are respectively equipped with a stirring component and a dispersing component; the powder subsystem (2) is equipped with a powder silo (21), which is connected to the powder inlet (11) of the powder-liquid mixer (1) through a feeding component (22).

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