Apparatus for dissolving lithium salt powder
The present invention relates to an apparatus for dissolving lithium salt powder which is used in preparation of a liquid electrolyte for a lithium ion battery, and more specifically, to an apparatus for dissolving lithium salt powder, which includes: a reactor 10 configured to supply an electrolyte solution; a powder hopper configured to supply lithium salt powder; a dissolution chamber 30 configured to forcibly mix the electrolyte solution and the lithium salt powder; and a powder supply pipe 40 configured to connect the powder hopper 20 and the dissolution chamber 30 , wherein a hopper standing frame 70 is installed around the powder hopper 20 , the hopper standing frame 70 is detachably loaded on a hopper vibrating unit 80 , and a powder outlet 22 of the powder hopper 20 is connected to the powder supply pipe 40 by a vibration-proof connection pipe 23.
1 . An apparatus for dissolving lithium salt powder, comprising:
a closed reactor ( 10 ) configured to supply an electrolyte solution for preparing a liquid electrolyte;
a powder hopper ( 20 ) configured to supply lithium salt powder;
a dissolution chamber ( 30 ) configured to forcibly mix the electrolyte solution and the lithium salt powder and allow the resulting mixture to be circulated toward the reactor ( 10 );
a powder supply pipe ( 40 ) configured to connect the powder hopper ( 20 ) and the dissolution chamber ( 30 ); and
a solution discharge pipe ( 50 ) and a solution return pipe ( 60 ) configured to connect the reactor ( 10 ) and the dissolution chamber ( 30 ),
wherein a hopper standing frame ( 70 ) configured to support the powder hopper so that the powder hopper stands upright in a state in which a powder outlet ( 22 ) is positioned at the bottom and the hopper standing frame is installed around the powder hopper ( 20 ), the hopper standing frame ( 70 ) is detachably loaded on a hopper vibrating unit ( 80 ) configured to impart vibrations to the powder hopper ( 20 ), and the powder outlet ( 22 ) is connected to the powder supply pipe ( 40 ) by a vibration-proof connection pipe ( 23 ) made of a vibration-absorbing elastomer.
2 . The apparatus of claim 1 , wherein the hopper standing frame ( 70 ) includes:
a quadrilateral-shaped upper frame ( 71 ) disposed above the powder hopper ( 20 );
a quadrilateral-shaped lower frame ( 72 ) disposed below the powder hopper ( 20 );
a plurality of vertical frames ( 73 ) configured to vertically connect the upper frame ( 71 ) and the lower frame ( 72 );
a support frame ( 74 ) configured to support a lower slope of the powder hopper ( 20 ) in the middle of the vertical frame ( 73 ); and
a fixing bracket ( 75 ) configured to fix a side surface of the powder hopper ( 20 ) to the vertical frame ( 73 ).
3 . The apparatus of claim 1 , wherein the hopper vibrating unit ( 80 ) includes:
a hopper loading plate ( 81 ) intended to load the hopper standing frame ( 70 ) and having a central hole ( 81 a ) through which the powder supply pipe ( 40 ) passes in a non-contact state in the center;
a vibration-proof mount ( 82 ) configured to support the hopper loading plate ( 81 ); and
a vibrator ( 83 ) configured to vibrate the hopper loading plate ( 81 ).
4 . The apparatus of claim 3 , wherein a detachment preventing protrusion ( 81 b ) configured to prevent the hopper standing frame ( 70 ) from being detached protrudes at the edge of the hopper loading plate ( 81 ), and
a reinforcement frame ( 84 ) on which the vibration-proof mount ( 82 ) is installed and the reinforcing frame is attached to a lower surface of the hopper loading plate ( 81 ).
5 . The apparatus of claim 1 , wherein a guard rail ( 90 ) configured to guide the entry and exit of the hopper standing frame ( 70 ) and prevent the hopper standing frame ( 70 ) from being detached is installed around the hopper vibrating unit ( 80 ),
the guard rail ( 90 ) includes: a side rail ( 91 ) disposed on each of the left and right sides of the hopper standing frame ( 70 ); a rear rail ( 92 ) disposed at the rear of the hopper standing frame ( 70 ); and a rail support ( 93 ) configured to support the side rail ( 91 ) and the rear rail ( 92 ) at a predetermined height, and
the front of the guard rail ( 90 ) is open so that the entry and exit of the hopper standing frame ( 70 ) is allowed.
6 . The apparatus of claim 5 , wherein a guide roller ( 94 ) configured to guide the entry and exit of the hopper standing frame ( 70 ) is installed inside the side rail ( 91 ).