LIQUID WITHDRAWING SYSTEM AND LIQUID WITHDRAWING DEVICE

摘要

Provided is a liquid withdrawing system in which a plug attached to an opening portion of an inner container includes a cylindrical contact portion, an engaging claw connected to a lower end of the cylindrical contact portion, a cylindrical guide portion connected to a lower end of the engaging claw, a siphon tube and a flow channel portion having a liquid flow channel and a gas flow channel, and in the liquid withdrawing system, a second length in an axis direction from a lower end of the cylindrical guide portion to a distal end of the siphon tube is shorter than a first length in an axis direction from an upper end of the opening portion to the bottom surface of the inner container, and a third length in the axis direction from the engaging claw to the distal end of the siphon tube is longer than the first length.

主权项

1. A liquid withdrawing system comprising:
a first container formed in a cylindrical shape along a first axis extending in a vertical direction, the first container having on a top surface an opening portion extending in a direction of the first axis and a recess at a position on a bottom surface corresponding to the opening portion; and a liquid withdrawing device attached to the opening portion, the liquid withdrawing device including:
a cylindrical contact portion having a cylindrical shape, the cylindrical contact portion being in contact with an inner circumferential surface of the opening portion when the liquid withdrawing device is attached to the opening portion;an engaging claw connected to a lower end of the cylindrical contact portion, the engaging claw being elastically deformed inwardly when inserted along the inner circumferential surface of the opening portion and engaged with a lower end of the opening portion after passing through the opening portion;a cylindrical guide portion having a cylindrical shape and connected to a lower end of the engaging claw, the cylindrical guide portion being in contact with the inner circumferential surface of the opening portion when inserted along the inner circumferential surface;a siphon tube extending in a second axis direction and inserted toward the bottom surface of the first container; anda flow channel portion having a liquid flow channel connected to the siphon tube and a gas flow channel for leading a pressurizing gas supplied from an outside of the first container to an inner space of the first container, wherein a second length in the second axis direction from a lower end of the cylindrical guide portion to a distal end of the siphon tube is shorter than a first length in the first axis direction from an upper end of the opening portion to the bottom surface of the first container, and a third length in the second axis direction from the engaging claw to the distal end of the siphon tube is longer than the first length.