Devices for dispensing solid powder or pellets

A device for solid material dispensing, comprising:

• a drive rod (2) linearly movable along, and rotationally movable around, an axis direction (12);
• a central rod (5) attached to the drive rod and drivable by the drive rod to rotate around the axis direction with the drive rod;
• a solid material container (10) having one or more compartments to store solid materials to be dispensed;
• a switch valve (6) rigidly attached to the central rod and drivable by the central rod to rotate around the axis direction with the central rod;
• wherein a container bottom (19) of the solid material container comprises one or more first component shapes (57) that form one or more first interstitial void spaces (58);
• wherein the switch valve comprises one or more second component shapes (54) that form one or more second interstitial void spaces (55);
• wherein the one or more second component shapes of the switch valve form a closure with the one or more first component shapes of the container bottom of the solid material container to prevent any of the solid material from being dispensed from the solid material container while the switch valve is positioned at one or more first rotational positions;
• wherein the one or more second interstitial void spaces form one or more dispensing channels with the one or more first interstitial void spaces to allow one or more units of the solid material to be dispensed from the solid material container to one or more outside receptacles while the switch valve is rotationally positioned differently from the one or more first rotational positions.