Abstract: An emptying device of a storage container of granular material and the like is provided with an access opening. The emptying device includes a support body; a suction head of the granular material; two or more lifting groups associated with the support body and susceptible to grab and lift the access opening; moving elements of the lifting groups designed to move a first lifting group by a movement which is independent with respect to a second lifting group; a control device of the moving elements configured to automate the movements of the lifting groups according to predetermined sequences in order to move, independently from each other, different portions of the storage container and to channel the granular material towards the suction head.

Abstract: A control method and pneumatic transport system of granular material, conveys granular material from storage containers to processing machines includes at least one loading device of the granular material with a collection tank of the granular material; at least one granular material conveying duct fluidly connecting the collection tank to at least one container; and a granular material flow generator inside the conveying duct. For each loading device at least one sensor detects vibrations induced by the material being loaded inside the loading device. The sensor is arranged at or near the loading device and generates time signals of the vibrations that may be correlated to the granular material mass being progressively loaded in the tank or to the volume of the tank being progressively filled by the granular material.

Abstract: The invention relates to a plant for the transport of granular material comprising at least one container for granular material to be transported, at least one receiver-meter group, at least one conveyance duct, depressurization-pressurization means arranged to suction/inject a gaseous medium from/into said at least one container, and at least one vacuum duct between a receiver-meter group and said depressurization-pressurization means, thereby creating a flow of said granular material and said gaseous medium in said at least one conveyance duct and a flow of gaseous medium between said at least one receiver-meter group and said depressurization-pressurization means.

Abstract: An emptying device of a storage container of granular material and the like is provided with an access opening. The emptying device includes a support body; a suction head of the granular material; two or more lifting groups associated with the support body and susceptible to grab and lift the access opening; moving elements of the lifting groups designed to move a first lifting group by a movement which is independent with respect to a second lifting group; a control device of the moving elements configured to automate the movements of the lifting groups according to predetermined sequences in order to move, independently from each other, different portions of the storage container and to channel the granular material towards the suction head.

Abstract: A hopper structure for treating granular material, comprising an inner sidewall section arranged, in use, as an upper tubular sidewall, a tapered lower section having a delivery mouth and an elongated insert body wherein said insert comprises an upper portion and a lower portion arranged at said lower tapered portion of the hopper and having its conicity facing away from said upper portion, said upper portion axially extending from the base of the lower portion up to at least one half of the upper tubular section at an angle ??0 with respect to a vertical line.

Abstract: Granular material is dehumidified by: a) arranging a dehumidification plant having at least one hopper for containing the granular material, having a feed mouth and an output mouth, and at least one dry air generator fluidically connected to a dry air distributor inside the hopper; b) loading granular material into the hopper through the feed mouth; c) measuring the degree of initial humidity of the granular material entering the hopper; d) calculating on the basis of the values of initial humidity measured, the dehumidifying capacity of the dry air flow through the hopper needed to achieve predefined residual humidity values in the granular material leaving the hopper, the residence time of the granular material inside the hopper being fixed; e) generating a dry air flow through said hopper having a dehumidifying capacity calculated in the calculating step d).

Abstract: A hopper for dehumidification of granular plastic material by a dehumidifying fluid includes a main body, having a top wall with an opening for the granular plastic material; at least one discharge opening for the dehumidifying fluid provided on the main body or the top wall, a tapered lower section with a discharge opening for the dehumidified granular plastic material, a fluid-sealed insert member delimiting an annular air space with the main body and the tapered lower section, and at least one dehumidifying fluid feed duct to the annular air space, the lower tapered section comprising at least one pair of walls to delimit at least one chamber that is outside the annular air space and in fluid communication therewith, the at least one chamber being feedable with dehumidifying fluid from the at least one feed duct oriented tangentially or parallel to an enclosing wall.

Abstract: The present invention regards a hopper structure for containing and treating loose material, which includes a tubular section, upper in use, a lower tapered section equipped with a suitable discharge mouth, a support device for at least the upper tubular section, and a guide device designed to allow the lower section to move between a closed position against the upper section and an open position removed from the upper section.

Abstract: The invention relates to a plant for the transport of granular material comprising at least one container for granular material to be transported, at least one receiver-meter group, at least one conveyance duct, depressurization-pressurization means arranged to suction/inject a gaseous medium from/into said at least one container, and at least one vacuum duct between a receiver-meter group and said depressurization-pressurization means, thereby creating a flow of said granular material and said gaseous medium in said at least one conveyance duct and a flow of gaseous medium between said at least one receiver-meter group and said depressurization-pressurization means.

Abstract: The invention relates to a plant for the transport of granular material comprising at least one container for granular material to be transported, at least one receiver-meter group, at least one conveyance duct, depressurization-pressurization means arranged to suction/inject a gaseous medium from/into said at least one container, and at least one vacuum duct between a receiver-meter group and said depressurization-pressurization means , thereby creating a flow of said granular material and said gaseous medium in said at least one conveyance duct and a flow of gaseous medium between said at least one receiver-meter group and said depressurization-pressurization means.

Abstract: Granular material is dehumidified by: a) providing a number of dry air generators inside hoppers containing granular material; b) for each dry air generator, evaluating the dry air flow generable and/or higher energy efficiency functioning time; c) calculating the dry air flow rate for each single hopper depending on the characteristics of the granular material; and d) activating a number of generators sufficient to deliver a total dry air flow rate equal to the sum of the flow rates required by the hoppers. The number of the generators and the generators to be activated are chosen depending on the flow rate deliverable by each and/or by their respective ranges of functioning at higher energy efficiency according to an energy saving logic. The remaining generators are deactivated.

Abstract: Granular material is dehumidified by: a) arranging a dehumidification plant having at least one hopper for containing the granular material, having a feed mouth and an output mouth, and at least one dry air generator fluidically connected to a dry air distributor inside the hopper; b) loading granular material into the hopper through the feed mouth; c) measuring the degree of initial humidity of the granular material entering the hopper; d) calculating on the basis of the values of initial humidity measured, the dehumidifying capacity of the dry air flow through the hopper needed to achieve predefined residual humidity values in the granular material leaving the hopper, the residence time of the granular material inside the hopper being fixed; e) generating a dry air flow through said hopper having a dehumidifying capacity calculated in the calculating step d).

Abstract: A dehumidification plant for granular material, comprising hopper having loading mouth and discharge mouth for granular material, upper feeding mouth in the hopper and lower delivery mouth of a gaseous medium, humidity absorbent material designed to absorb the humidity conveyed by the gaseous medium; towers arranged to contain the absorbent material; supplying arrangement designed to feed the gaseous medium to the hopper and the towers; electronic control unit; detection structure arranged to detect process variables of the plant and electrically connected with the electronic control unit. The plant further comprises distribution structure designed to distribute gaseous medium from of the towers thereby feeding it to another tower from among the towers, the distribution structure being controllable by the electronic control unit between open position, portion of the gaseous medium contained in the of the towers is fed to the towers, and closed position.

Abstract: The present invention regards a hopper structure for containing and treating loose material, which includes a tubular section, upper in use, a lower tapered section equipped with a suitable discharge mouth, a support device for at least the upper tubular section, and a guide device designed to allow the lower section to move between a closed position against the upper section and an open position removed from the upper section.

Abstract: Granular material is dehumidified by: a) providing a number of dry air generators inside hoppers containing granular material; b) for each dry air generator, evaluating the dry air flow generable and/or higher energy efficiency functioning time; c) calculating the dry air flow rate for each single hopper depending on the characteristics of the granular material; and d) activating a number of generators sufficient to deliver a total dry air flow rate equal to the sum of the flow rates required by the hoppers. The number of the generators and the generators to be activated are chosen depending on the flow rate deliverable by each and/or by their respective ranges of functioning at higher energy efficiency according to an energy saving logic. The remaining generators are deactivated.