WO2023045810A1 - 用于固液混合及分散的装置及设备 - Google Patents

用于固液混合及分散的装置及设备 Download PDF

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Publication number
WO2023045810A1
WO2023045810A1 PCT/CN2022/118601 CN2022118601W WO2023045810A1 WO 2023045810 A1 WO2023045810 A1 WO 2023045810A1 CN 2022118601 W CN2022118601 W CN 2022118601W WO 2023045810 A1 WO2023045810 A1 WO 2023045810A1
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Prior art keywords
liquid
chamber
powder
mixing
dispersing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2022/118601
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English (en)
French (fr)
Chinese (zh)
Inventor
石桥
白淑娟
金旭东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENZHEN SHANGSHUI INTELLIGENT EQUIPMENT CO Ltd
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SHENZHEN SHANGSHUI INTELLIGENT EQUIPMENT CO Ltd
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Publication date
Application filed by SHENZHEN SHANGSHUI INTELLIGENT EQUIPMENT CO Ltd filed Critical SHENZHEN SHANGSHUI INTELLIGENT EQUIPMENT CO Ltd
Priority to KR1020247011701A priority Critical patent/KR102911524B1/ko
Priority to JP2024518518A priority patent/JP7706016B2/ja
Priority to EP22871857.3A priority patent/EP4393574A4/en
Publication of WO2023045810A1 publication Critical patent/WO2023045810A1/zh
Priority to US18/512,965 priority patent/US12257559B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/56—Mixing liquids with solids by introducing solids in liquids, e.g. dispersing or dissolving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/53—Mixing liquids with solids using driven stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/54—Mixing liquids with solids wetting solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/565—Mixing liquids with solids by introducing liquids in solid material, e.g. to obtain slurries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/70—Pre-treatment of the materials to be mixed
    • B01F23/71—Grinding materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/52—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle with a rotary stirrer in the recirculation tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/111—Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/17—Stirrers with additional elements mounted on the stirrer, for purposes other than mixing
    • B01F27/171—Stirrers with additional elements mounted on the stirrer, for purposes other than mixing for disintegrating, e.g. for milling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
    • B01F27/2123—Shafts with both stirring means and feeding or discharging means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/272—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces
    • B01F27/2723—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces the surfaces having a conical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32—Driving arrangements
    • B01F35/32005—Type of drive
    • B01F35/3204—Motor driven, i.e. by means of an electric or IC motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms
    • B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
    • B01F35/75455—Discharge mechanisms characterised by the means for discharging the components from the mixer using a rotary discharge means, e.g. a screw beneath the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/93—Heating or cooling systems arranged inside the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F2035/35—Use of other general mechanical engineering elements in mixing devices
    • B01F2035/351—Sealings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F2035/35—Use of other general mechanical engineering elements in mixing devices
    • B01F2035/352—Bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F2035/98—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/06—Mixing of food ingredients
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/22—Mixing of ingredients for pharmaceutical or medical compositions
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    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/59—Mixing reaction ingredients for fuel cells
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    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/02—Maintaining the aggregation state of the mixed materials
    • B01F23/023—Preventing sedimentation, conglomeration or agglomeration of solid ingredients during or after mixing by maintaining mixed ingredients in movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
    • B01F27/2121—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts composed of interconnected parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of mixing and dispersing powder and liquid, in particular to a device and equipment for mixing and dispersing solid-liquid.
  • the circulating mixing and dispersing device can efficiently prepare a solid-liquid mixture, allowing the liquid to circulate back and forth between the circulating mixing and dispersing device and the buffer tank.
  • the powder can be gradually put into the circulating mixing and dispersing device to be mixed with the liquid, and the obtained slurry is in
  • the system continues to circulate, and is dispersed when passing through a circulating mixing and dispersing device until a solid-liquid mixture that meets the requirements is obtained.
  • the technical scheme of the existing circulating mixing and dispersing device is as follows.
  • the utility model patent with the publication number CN207667471U (hereinafter referred to as "71U patent") discloses a solid-liquid mixing device suitable for high-viscosity materials. It specifically discloses that powder and liquid are mixed and dispersed under the action of a dispersing wheel, and then It is discharged under the action of the twin-screw pump connected to the outlet. Under this design, the discharge speed needs to match the feed speed of liquid and powder.
  • the discharge speed is too fast, there will be a break in the cavity, and the filling rate of the slurry will be low, which will affect the effect of mixing and dispersion; on the contrary, if If the discharge speed is too slow, the slurry will return to the powder channel, causing blockage and causing the equipment to fail to operate normally. In actual operation, it is difficult to control the discharge speed at the balance point. In order to ensure that there will be no return and blockage, the equipment can only work at a state where the discharge speed is too fast and the cavity filling rate is low, which reduces the Mixed dispersion effect.
  • the utility model patent with publication number CN209155625U discloses a device for mixing solids and liquids
  • the invention patent with publication number CN110394082A discloses an impeller assembly
  • the powder and liquid are mixed and dispersed under the action of the truncated cone-shaped impeller, and then discharged by centrifugation at the lower part of the impeller, No additional discharge pump is required.
  • the main dispersing areas of these two devices are all located at the larger diameter part of the lower part of the impeller which is closer to the outlet.
  • the present application aims to provide a device and equipment for solid-liquid mixing and dispersion with high slurry filling rate, sufficient dispersion effect, and full utilization of equipment capacity.
  • the application adopts the following technical solutions:
  • a device for solid-liquid mixing and dispersion including a powder breaking mechanism fixedly connected to the main shaft, the powder breaking mechanism is located in the powder feeding chamber, and the powder feeding
  • the chamber is provided with a powder feeding port; the outside of the powder feeding chamber is provided with a liquid feeding chamber, the liquid feeding chamber is provided with a liquid feeding port, and the liquid feeding chamber is provided with a Connected dispersing mechanism; the bottom of the liquid feed chamber and the bottom of the powder feed chamber communicate with the top of the mixing chamber respectively, the mixing chamber is provided with an impeller fixedly connected to the main shaft, the mixing chamber The lower part is provided with a tangential discharge port.
  • the liquid feeding chamber is arranged around the powder feeding chamber, and the liquid feeding chamber is in an annular structure.
  • the powder dispersing mechanism has multi-layer blades; this arrangement can ensure that the powder can be broken into a soot-like state during the process of the powder falling to the bottom of the powder feeding chamber .
  • the dispersing mechanism is a cylindrical dispersing wheel.
  • the dispersing mechanism includes a plurality of stirring paddles distributed along the circumferential direction.
  • the dispersion wheel is provided with holes, which facilitate the mixing of the slurry and achieve a good dispersion effect.
  • the gap between the dispersion wheel and the inner wall and the outer wall of the liquid feeding chamber is 0.5 mm to 10 mm; further, the gap between the dispersion wheel and the inner wall and the outer wall of the liquid feeding chamber is 1mm to 5mm.
  • the gap between the stirring paddle and the inner wall and outer wall of the liquid feeding chamber is 0.5 mm to 10 mm; further, the gap between the stirring paddle and the inner wall and outer wall of the liquid feeding chamber is 1 mm to 5 mm.
  • the slurry is sheared by the dispersing mechanism in the narrow liquid feeding chamber, and the shear strength is higher, and the slurry is filled with the liquid feeding chamber, which can obtain sufficient residence time and fully disperse the slurry.
  • the discharge area at the lower part of the mixing chamber is provided with a discharge dispersing mechanism for dispersing the slurry before discharging it.
  • the second aspect provides an equipment for solid-liquid mixing and dispersion, including the device described in the first aspect, the lower part of the device is connected to the sealing device, and the lower part of the device is provided with a bearing and a motor.
  • the slurry is pumped from the slurry buffer tank to the liquid feed chamber in the device, dispersed by the dispersing mechanism, and then enters the mixing chamber provided with an impeller, and the slurry enters the liquid feed chamber Then the chamber starts to be rotated by the dispersing mechanism, and since the dispersing mechanism, the powder dispersing mechanism and the impeller are all connected to the main shaft, the rotation speed of the three is the same, then the slurry enters the mixing chamber and keeps rotating. A liquid ring that rotates downward is formed.
  • the liquid ring means that the liquid flows downward to form a ring, and the relative velocity of the slurry when it contacts the impeller is very low, and it is not easy to splash the slurry;
  • the material chamber is broken up into dust, and then the powder will also rotate with the powder dispersing mechanism.
  • the bottom of the powder feeding chamber communicates with the mixing chamber, so the powder close to the mixing chamber is The slurry rotating downward in the mixing chamber is sucked into the mixing chamber for mixing. After being uniformly mixed with the powder in the mixing chamber, it is discharged to the slurry buffer tank.
  • the slurry circulates back and forth between the slurry buffer tank and the circulating mixing and dispersing device until the slurry is fully dispersed.
  • the slurry can fill the liquid feed chamber, avoiding the need to set the dispersion mechanism in the discharge area at the lower part of the mixing chamber The resulting slurry filling rate is low and the dispersion effect is insufficient.
  • Figure 1 is a schematic cross-sectional view of one of the embodiments of the present application.
  • Figure 2 is a top view of one of the embodiments of the present application.
  • Fig. 3 is a structural schematic diagram of one embodiment of the dispersed structure in the present application.
  • Fig. 4 is a bottom view of one embodiment of the dispersed structure in the present application.
  • Figure 5 is a schematic cross-sectional view of one of the embodiments of the present application.
  • Figure 6 is a top view of one of the embodiments of the present application.
  • Fig. 7 is a structural schematic diagram of one embodiment of the dispersed structure in the present application.
  • Fig. 8 is a schematic structural diagram of one embodiment of the device in the present application.
  • the expressed orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and the connection or positional relationship that can be determined according to the text or technical content of the description.
  • some of the position change diagrams are omitted or not drawn. This manual does not clearly explain the omitted or undrawn position change diagrams. It cannot be considered that there is no explanation. Explain, and explain in a unified way here.
  • the present application provides a device 20 for solid-liquid mixing and dispersion
  • the device 20 includes: a powder breaking mechanism 206 fixedly connected to the main shaft 21, the powder breaking mechanism 206 is located In the powder feed chamber 205, the powder feed chamber 205 is provided with a powder feed port; the outside of the powder feed chamber 205 is provided with a liquid feed chamber 201, and the liquid feed chamber 201 is provided with There is a liquid feed port 200, and a dispersing mechanism 202 fixedly connected to the main shaft 21 is arranged in the liquid feed chamber 201; the bottom of the liquid feed chamber 201 and the powder feed chamber 205 are respectively mixed with The upper part of the chamber communicates, the mixing chamber is provided with an impeller 207 fixedly connected to the main shaft 21, and the lower part of the mixing chamber is provided with a tangential discharge port 208, as shown in FIG.
  • the outside of the above-mentioned powder feeding chamber 205 means that the liquid feeding chamber 201 and the powder feeding chamber 205 are two independent containers, that is, the powder and the liquid need to be entered separately when entering the equipment of this application.
  • the respective feed chambers are preliminarily treated and then mixed, and the preliminary treatment includes but not limited to further dispersion of powder or slurry.
  • the tangential discharge port 208 refers to a discharge channel formed by extending outward along the inner wall of the lower part of the mixing chamber in the mixing chamber.
  • the outside of the liquid feed chamber 201 also includes a cooling water interlayer 203 for adding cooling water to cool the slurry in the liquid feed chamber 201.
  • the outside of the cooling water interlayer 203 is an insulating layer 204, so The thermal insulation layer 204 keeps the cooling water in the cooling water interlayer 203 within a predetermined temperature range.
  • the powder enters the feeding chamber from the powder feeding port, and is broken into a dust shape by the powder breaking mechanism 206, and then rotates with the powder breaking mechanism 206,
  • the bottom of the powder feeding chamber 205 communicates with the mixing chamber, so the powder close to the mixing chamber is sucked into the mixing chamber by the slurry rotating downward in the mixing chamber, so as to make the slurry Mixing with powder.
  • the powder dispersing mechanism 206 has multi-layered blades, which can fully disperse the powder into soot, so that the rotating slurry flowing downward can suck the powder into the mixing chamber.
  • the liquid feed chamber 201 is arranged around the powder feed chamber 205, and the liquid feed chamber 201 is an annular structure (as shown in FIG. 2 ), so that the liquid feed chamber 201 The cross-section is narrow, the flow rate of the slurry is faster, combined with the shear action of the dispersing mechanism 202 on the slurry, it is easier to form a uniformly mixed slurry, and the slurry enters the liquid feeding chamber 201 after being fed into the liquid feeding chamber 201.
  • the slurry continues to be driven by the impeller 207 to form a liquid ring that rotates downward; since the powder dispersing mechanism 206, the dispersing mechanism 202, and the impeller 207 are all connected and fixed to the main shaft 21, the rotation of the three The speed is the same, that is, the rotational speed of the powder and the slurry when entering the mixing chamber is basically the same, then the relative speed when the slurry contacts the impeller 207 is very low, and the splash of the slurry is not easy to occur, and the soot-like powder is Inhalation in the mixing chamber is easier to mix evenly; further, the dispersing mechanism 202 can be a cylindrical dispersing wheel 2020 (as shown in Fig.
  • Stirring paddles 2022 can include a plurality of dispersing wheels distributed along the circumferential direction.
  • Stirring paddles 2022 specifically, the stirring paddles 2022 are uniformly distributed along the circumferential direction, and the stirring paddles 2022 are blades or cylindrical paddles (as shown in FIG. 7 ).
  • the slurry is pumped from the slurry buffer tank to the liquid feed chamber 201 in the device 20, dispersed by the dispersing mechanism 202, and then enters the mixing chamber provided with the impeller 207, and is evenly mixed with the powder in the mixing chamber Finally, it is discharged to the slurry buffer tank, and before reaching the discharge standard, the slurry circulates back and forth between the slurry buffer tank and the circulating mixing and dispersing equipment.
  • the slurry enters the liquid feed chamber 201 from the liquid feed port 200 and is dispersed by the dispersing mechanism 202, and then enters the upper part of the mixing chamber, and the impeller 207 makes the slurry form a rotating direction on the wall surface of the mixing chamber. Liquid ring under flow.
  • the slurry has been dispersed evenly before entering the mixing chamber, and the soot-like powder is sucked into the slurry for mixing in the mixing chamber, without It is easy to form agglomerates that are difficult to disperse, which is conducive to the formation of uniform slurry.
  • This application can prevent the powder from directly intruding into the mixing chamber in the form of a block, or the slurry is added to the chamber where the powder is stored, and the mixing method is easy to produce agglomerates that are difficult to disperse, while avoiding the appearance of large-volume agglomerates, and It is difficult to disperse again after the formation of agglomerates.
  • the powder is sucked into the mixing chamber and mixed with the slurry that rotates downward, so as to avoid the above-mentioned two forms of compact agglomerates before further dispersion.
  • the method of the present application can produce a more uniform mixed solution, which is not easy to produce agglomerates, and the time spent in the dispersing step is not long, which improves the production efficiency.
  • the mixed slurry is discharged through the action of the twin-screw pump connected to the outlet, but it is difficult to match the discharge speed with the feed speed of liquid and powder under this design, and it is easy to appear If the material speed is too fast, the flow will be cut off, the filling rate of the slurry is low, and the mixing and dispersing effect will be affected, or the material output speed will be too slow, which will cause the slurry to return to the chamber of the previous step, causing problems such as blockage and equipment damage. Obviously, the impact on production in the latter case is even more unacceptable.
  • the 71U patented equipment is difficult to solve the problem of low slurry filling rate and affecting the mixing and dispersing effect.
  • the powder and the liquid are mixed and dispersed under the action of the truncated cone-shaped impeller, and then the material is discharged by centrifugation at the lower part of the impeller, which does not require an additional discharge pump as in the 71U patent.
  • the main dispersion area of the device in the 25U patent and the 82A patent is located at the part of the lower part of the impeller that is closer to the discharge port and has a larger diameter.
  • the discharge capacity is determined by the rotation speed of the impeller, and the rotation speed of the impeller also determines the dispersion intensity.
  • the impeller needs to work at a specified speed, but this speed cannot be just at the balance point between the output speed and the feed speed.
  • the slurry in the liquid feed chamber is pushed into the mixing chamber by the feed material, so the slurry can fill the liquid feed chamber, the dispersion effect is more sufficient, and the work efficiency is also improved.
  • a hole 2021 is opened on the dispersion wheel 2020; in another embodiment, a groove is provided on the dispersion wheel 2020, or the dispersion wheel 2020
  • the surface of the wheel 2020 is provided with knurls or grooves, both of which can promote the flow of the slurry and enhance the dispersion effect; it should be understood that the above-mentioned implementation methods of promoting the flow of the slurry and enhancing the shearing action can be used in combination, and are not limited to only using One of the implementations.
  • the gap between the dispersion wheel 2020 and the inner wall and the outer wall of the liquid feeding chamber 201 is 0.5 mm to 10 mm; further, the gap between the dispersion wheel 2020 and the inner wall and the outer wall of the liquid feeding chamber 201 The gap between them is 1 mm to 5 mm; the inner wall refers to the wall close to the powder feed chamber 205 in the liquid feed chamber 201, and the outer wall refers to the wall between the liquid feed chamber 201 and the cooling water interlayer 203 adjacent wall.
  • the gap between the dispersing wheel 2020 and the inner and outer walls of the liquid feed chamber 201 mainly affects the shear rate, the smaller the gap, the greater the shear rate, but too small a gap may cause the risk of wall scraping.
  • the gap between the dispersion wheel 2020 and the inner and outer walls is the same, but the aforementioned size ranges can be arbitrarily matched.
  • the gap between the dispersion wheel 2020 and the inner wall of the liquid feeding chamber 201 is 0.5 mm to 10 mm.
  • the gap between the dispersing wheel 2020 and the outer wall of the liquid feeding chamber 201 is 1 mm to 5 mm.
  • the gap between the stirring paddle 2022 and the inner and outer walls of the liquid feeding chamber 201 is 0.5 mm to 10 mm; further, the gap between the stirring paddle 2022 and the inner and outer walls of the liquid feeding chamber 201 The gap between them is 1 mm to 5 mm; similar to the embodiment of the dispersing wheel, under normal circumstances the gap between the stirring paddle 2022 and the inner and outer walls is the same, but it can also be different.
  • the slurry is sheared by the dispersing mechanism in the narrow liquid feeding chamber 201, and the shearing strength is higher, and the slurry is filled with the liquid feeding chamber 201, and sufficient residence time can be obtained to fully disperse the slurry.
  • the discharge area at the lower part of the mixing chamber is provided with a discharge dispersing mechanism, so that the slurry can be redispersed during discharge and then discharged, further enhancing the uniformity of the slurry.
  • the present application provides a kind of equipment for solid-liquid mixing and dispersion, which includes the device 20 described in the first aspect, and the lower part of the device 20 is sealed by a sealing device 23 , to prevent the slurry in the device 20 from leaking and the air from entering the device 20 to affect the mixing of the slurry.
  • the bottom of the device 20 is provided with a bearing 22 and a motor 24 .
  • Above the motor 24 is the bearing 22, and the motor 24 drives the main shaft 21 to rotate, thereby driving the powder dispersing mechanism 206, the dispersing mechanism 202, and the impeller 207 to rotate, and the powder and slurry are respectively Disperse and mix well.
  • the included modules are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be realized; in addition, the specific names of each functional unit are also It is only for the convenience of distinguishing each other, and is not used to limit the protection scope of the present application.
  • the terms "installation”, “connection” and “connection” should be interpreted in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, or an indirect connection through an intermediary, or an internal communication between two components.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
PCT/CN2022/118601 2021-09-23 2022-09-14 用于固液混合及分散的装置及设备 Ceased WO2023045810A1 (zh)

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JP2024518518A JP7706016B2 (ja) 2021-09-23 2022-09-14 固液の混合分散に用いられる装置及び設備
EP22871857.3A EP4393574A4 (en) 2021-09-23 2022-09-14 DEVICE AND APPARATUS FOR MIXING AND DISPERSING SOLIDS AND LIQUIDS
US18/512,965 US12257559B2 (en) 2021-09-23 2023-11-17 Device and apparatus for mixing and dispersing solid and liquid

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