Slurry storage and stirring device and slurry stirring method

Patent metadata

Field	Value
Publication number	US-11833480-B2
Application number	US-201916979724-A
Country	US
Kind code	B2
Filing date	Mar 8, 2019
Priority date	Mar 15, 2018
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

A device includes a container for storing slurry, a main pipeline with one end connected to the container and the other end extending to an inner space of the container and forming a first circulation path, a nozzle attached to the other end of the main pipeline, a pump provided in the first circulation path between one end and the other end of the main pipeline for sucking and pressurizing slurry, a sub-pipeline which branches from the pump or branches from the main pipeline between the pump and the nozzle and extends to the inner space of the container and forms a second circulation path, a valve for switching distribution of slurry to one or both of the first and second circulation paths, and a discharge port provided at a tip opposite to a branch end of the sub-pipeline and located below the nozzle in a vertical direction.

First claim

The invention claimed is:

1. A slurry storage and stirring device comprising:
a container capable of storing a slurry containing particles and a solvent;
a main pipeline whose one end is connected to the container and the other end extends to an inner space of the container and toward a bottom surface of the inner space, forming a first circulation path of the slurry;
a nozzle attached to the other end of the main pipeline;
a pump which is provided in the first circulation path between one end and the other end of the main pipeline and sucks and pressurizes the slurry;
a sub-pipeline which branches from the pump or branches from the main pipeline between the pump and the nozzle and extends to the inner space of the container, forming a second circulation path of the slurry;
a valve which switches distribution of the slurry to one or both of the first circulation path and the second circulation path; and
a discharge port provided at a tip opposite to a branch end of the sub-pipeline and located below the nozzle in a vertical direction.

2. The slurry storage and stirring device according to claim 1 , further comprising a sensor which detects a level of a liquid surface of the slurry in the container,
wherein the valve is switched based on level information of the liquid surface of the slurry from the sensor.

3. The slurry storage and stirring device according to claim 1 , wherein the sub-pipeline branches from the main pipeline between the pump and the nozzle.

4. The slurry storage and stirring device according to claim 1 , wherein one end of the main pipeline is connected to a bottom of the container, and the other end of the main pipeline extends from an upper portion of the container toward a bottom surface of the inner space.

5. The slurry storage and stirring device according to claim 1 , wherein a lower side of the inner space of the container is a conical reduced diameter portion having an inner bottom surface whose cross-sectional area decreases downward.

6. The slurry storage and stirring device according to claim 5 , wherein an inclination angle of the inner bottom surface of the reduced diameter portion is 25° to 50° with respect to the vertical direction.

7. The slurry storage and stirring device according to claim 5 , wherein the tip of the sub-pipeline is disposed so that a slurry discharge direction from the discharge port swirls the slurry in a circumferential direction of the inner bottom surface of the container.

8. The slurry storage and stirring device according to claim 5 , wherein one end of the main pipeline is connected to an apex position of the conical reduced diameter portion of the container.

9. The slurry storage and stirring device according to claim 1 , wherein the nozzle is used as a jet mixer, the jet mixer has an inlet and an outlet of the slurry delivered from the pump, and a sucking port which takes the slurry in the container,
the slurry delivered from the pump to the inlet of the nozzle and the slurry taken from the sucking port are mixed, and a mixed slurry is jetted from the outlet.

10. The slurry storage and stirring device according to claim 1 , wherein a lower portion of the container includes a delivery pipeline that delivers the slurry to the outside of the container.

11. The slurry storage and stirring device according to claim 1 , wherein the slurry contains a binder.

12. The slurry storage and stirring device according to claim 1 , wherein an outlet of the nozzle and an inner bottom surface of the container are brought close to each other.

13. The slurry storage and stirring device according to claim 1 , wherein the container has a ceiling, and the ceiling is provided with the main pipeline extending in a vertical direction toward an inner bottom surface on a lower side in the inner space of the container.

14. The slurry storage and stirring device according to claim 1 , wherein a plurality of nozzles are attached to the other end of the main pipeline.

Assignees

• Proterial Ltd

Inventors

• Maeta Akihiro
• Nishimura Kazunori

Classifications

• B01F25/21 Primary

  with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers · CPC title

• B01F25/50

  Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle · CPC title

• B01F23/023

  Preventing sedimentation, conglomeration or agglomeration of solid ingredients during or after mixing by maintaining mixed ingredients in movement · CPC title

• B01F23/53

  using driven stirrers · CPC title

• B01F23/56

  by introducing solids in liquids, e.g. dispersing or dissolving · CPC title