Abstract

The present invention provides a method of discharging dry bulk material from a container. The method comprises the steps of applying vibration to the container in accordance with a predetermined vibration application routine. A resultant amplitude of vibration of the container resulting from the applied vibration is then monitored to facilitate the determination of a level of dry bulk material present in the container. In the event that the determined level of dry bulk material is above a predetermined level, the application of vibration to the container is ceased for a predetermined time interval. In the event that the determined level of dry bulk material is at or below a predetermined level, the application of vibration to the container is maintained in accordance with the predetermined vibration application routine.

IPC Classes  ?

• B65D 88/66 - Large containers characterised by means facilitating filling or emptying preventing bridge formation using vibrating or knocking devices
• B65D 88/26 - Hoppers, i.e. containers having funnel-shaped discharge sections
• B65D 90/48 - Arrangements of indicating or measuring devices

Abstract

The present invention provides a method of discharging dry bulk material from a container. The method comprises the steps of applying vibration to the container in accordance with a predetermined vibration application routine. A resultant amplitude of vibration of the container resulting from the applied vibration is then monitored to facilitate the determination of a level of dry bulk material present in the container. In the event that the determined level of dry bulk material is above a predetermined level, the application of vibration to the container is ceased for a predetermined time interval. In the event that the determined level of dry bulk material is at or below a predetermined level, the application of vibration to the container is maintained in accordance with the predetermined vibration application routine.

IPC Classes  ?

• B65D 88/66 - Large containers characterised by means facilitating filling or emptying preventing bridge formation using vibrating or knocking devices
• B65D 69/00 - Articles joined together for convenience of storage or transport without the use of packaging elements
• B65G 65/30 - Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass

Abstract

A device to effect optimum delivery of dry bulk material from a hopper including means to provide vibratory stimulus to the hopper, the said means including means to identify the resonant frequency of the hopper and its contents at any time and to automatically continuously vary the frequency of the vibratory stimulus to maintain this at or close to the resonant frequency of the hopper and its contents.

IPC Classes  ?

• B65G 65/34 - Emptying devices
• B65G 27/32 - Applications of devices for generating or transmitting jigging movements with means for controlling direction, frequency, or amplitude of vibration or shaking movement
• B65G 69/08 - Devices for emptying storage spaces as completely as possible
• B65D 88/66 - Large containers characterised by means facilitating filling or emptying preventing bridge formation using vibrating or knocking devices
• B65G 65/40 - Devices for emptying otherwise than from the top
• G05D 19/00 - Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase

Abstract

The present invention provides a method of discharging dry bulk material from a container. The method comprises the steps of applying vibration to the container in accordance with a predetermined vibration application routine. A resultant amplitude of vibration of the container resulting from the applied vibration is then monitored to facilitate the determination of a level of dry bulk material present in the container. In the event that the determined level of dry bulk material is above a predetermined level, the application of vibration to the container is ceased for a predetermined time interval. In the event that the determined level of dry bulk material is at or below a predetermined level, the application of vibration to the container is maintained in accordance with the predetermined vibration application routine.

IPC Classes  ?

• B65D 69/00 - Articles joined together for convenience of storage or transport without the use of packaging elements
• B65D 88/66 - Large containers characterised by means facilitating filling or emptying preventing bridge formation using vibrating or knocking devices
• B65G 65/30 - Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass