Filling nozzle

Patent metadata

Field	Value
Publication number	US-10597174-B2
Application number	US-201715850287-A
Country	US
Kind code	B2
Filing date	Dec 21, 2017
Priority date	Dec 22, 2016
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

A filling nozzle provided with a filling cylinder, an air-injection cylinder, and an air-supply unit. The filling cylinder is configured such that an auger rotates about the axis thereof to discharge powder through an opening provided at the lower end of the filling cylinder. The air-injection cylinder is fitted to the exterior of the filling cylinder to form an annular space between the filling cylinder and the air-injection cylinder. The air-supply unit supplies air in the annular space. A tip portion of the air-injection cylinder extends downward below the opening and has an air-discharge mouth formed in a tapered shape such that the tip portion has a diameter smaller than that of the opening.

First claim

The invention claimed is:

1. A filling nozzle comprising:
a filling cylinder, in which an auger rotates about the axis of the filling cylinder to discharge powder through an opening provided at the lower end of the filling cylinder;
an air-injection cylinder fitted to the exterior of the filling cylinder to form an annular space between the filling cylinder and the air-injection cylinder; and
an air-supply unit supplying air in the annular space, the supplied air passing through the annular space;
the air-injection cylinder having a tip portion that extends downward below the opening and has an air-discharge mouth formed in a tapered shape such that the tip portion has a diameter smaller than that of the opening; and
the supplied air being injected from a space between the tip of the filling cylinder and the air-injection cylinder, and flows along the inner surface of the discharge mouth.

2. The filling nozzle according to claim 1 , wherein an inner surface of the air-discharge mouth is coated with a water-repellant layer.

3. The filling nozzle according to claim 1 , further comprising a lifting unit for raising and lowering the air-injection cylinder relative to the filling cylinder, the lifting unit lowering the air-injection cylinder such that the tip of the air-injection cylinder is inserted into a container when the filling cylinder discharges powder from the opening to supply the powder into the container.

4. The filling nozzle according to claim 2 , further comprising a lifting unit for raising and lowering the air-injection cylinder relative to the filling cylinder, the lifting unit lowering the air-injection cylinder such that the tip of the air-injection cylinder is inserted into a container when the filling cylinder discharges powder from the opening to supply the powder into the container.

Assignees

• Shibuya Corp

Inventors

• Seno Tetsuya
• Ohta Masato

Classifications

• B65B39/12

  movable towards or away from container or wrapper during filling or depositing · CPC title

• B65B1/12

  of screw type · CPC title

• B65B1/16 Primary

  by pneumatic means, e.g. by suction · CPC title

• B65B2210/10

  Means for removing bridges formed by the material or article, e.g. anti-clogging devices · CPC title

• B65B39/02 Primary

  Expansible or contractible nozzles, funnels, or guides · CPC title