Abstract

The invention relates to a device for dispensing powder, comprising at least one storage tank (1) provided with a cap (2) comprising a flow orifice (3) for the powder. According to the invention, the device comprises a shutter (8) provided with an aperture (9) and fitted so as to be able to move relative to the cap between a shut position preventing the powder from flowing and an open position allowing the powder to flow through the aperture of the shutter, a channel (12) passing through the shutter so as to extend on either side of the aperture of the shutter in a direction that is substantially transverse to the flow of the powder, and means for creating a relative motion between the cap and the shutter in order to move the shutter between its two positions, said means being connected to a control unit (20) that is connected to contactless means for detecting the flow of the powder, the detecting means comprising, at a first end of the channel of the shutter, at least one emitter (21) emitting a wave into the channel and, at a second end of the channel, at least one receiver (22) for detecting the emitted wave. The invention also relates to a workstation comprising such a device for dispensing powder.

IPC Classes  ?

• G01F 11/00 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
• B65D 47/06 - Closures with discharging devices other than pumps with pouring spouts or tubesClosures with discharging devices other than pumps with discharge nozzles or passages
• G01G 13/00 - Weighing apparatus with automatic feed or discharge for weighing-out batches of material
• G01F 23/20 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of weight, e.g. to determine the level of stored liquefied gas
• G01G 13/02 - Means for automatically loading weigh-pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism
• G01G 13/24 - Weighing mechanism control arrangements for automatic feed or discharge
• G01N 35/00 - Automatic analysis not limited to methods or materials provided for in any single one of groups Handling materials therefor

Abstract

The invention relates to a device for dispensing powder, comprising at least one storage tank (1) provided with a cap (2) comprising a flow orifice (3) for the powder. According to the invention, the device comprises a shutter (8) provided with an aperture (9) and fitted so as to be able to move relative to the cap between a shut position preventing the powder from flowing and an open position allowing the powder to flow through the aperture of the shutter, a channel (12) passing through the shutter so as to extend on either side of the aperture of the shutter in a direction that is substantially transverse to the flow of the powder, and means for creating a relative motion between the cap and the shutter in order to move the shutter between its two positions, said means being connected to a control unit (20) that is connected to contactless means for detecting the flow of the powder, the detecting means comprising, at a first end of the channel of the shutter, at least one emitter (21) emitting a wave into the channel and, at a second end of the channel, at least one receiver (22) for detecting the emitted wave. The invention also relates to a workstation comprising such a device for dispensing powder.

IPC Classes  ?

• G01G 13/00 - Weighing apparatus with automatic feed or discharge for weighing-out batches of material
• G01N 1/20 - Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
• G01F 11/40 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply or discharge valves of the rectilinearly-moved slide type for fluent or solid material