Fluent material handling – with receiver or receiver coacting mea – Processes – Gas or variation of gaseous condition in receiver
Patent
1992-09-29
1994-08-30
Recla, Henry J.
Fluent material handling, with receiver or receiver coacting mea
Processes
Gas or variation of gaseous condition in receiver
141168, 141329, 222 5, 222 83, B65B 3100, B67C 300
Patent
active
053418530
DESCRIPTION:
BRIEF SUMMARY
Method for the destruction of aerosol cans, providing for their complete emptying, recovery and separation of the various contained elements without losses, and the devices, automatic or otherwise, for implementing the method of destruction, as well as the design principles of the automatic piercing machine.
The invention is related to the industrial sector of recovery and revaporization of waste products with, as principal object, the emptying of the aerosol cans, the recontainerizaiton of the contents, hazardous or not, without humain implication and without environmental pollution. Up to now, the principal techniques used for aerosol destruction have been by shredding without recovery of the propellant gas contents, such as CFC, liquefied petroleum gas, nitrogene, or carbon dioxyde . . . , or by discharging into waste deposits, or by burying without any prior conditioning.
According to another aspect of the invention, the method of destruction permits, by means of a hollow needle, the piercing of the pressurisized aerosol cans, with or without cutting an operculum, the transferring of the contents of the aerosol cans into a low pressure tank, assuring the separation of propellant gases and liquids, restoring the various elements according to their original specifications.
According to another aspect of the invention, the method of destruction permits the recuperating of the empty aerosol cans without external staining by the initial contents.
According to another aspect of the invention, the method of destruction includes the necessary conveyor devices effecting the handling of the aerosol cans from the storage area to the feeding device of the piercing machine, automatic or not, as well as the systems for the extraction and handling of the aerosol cans after treatment.
To clearly define the object of the invention, without limiting it to the drawings.
FIG. 1 represents a front sectional view illustratinng the principle of the transfer, by means of a hollow needle, of the aerosol contents.
FIG. 2 represents a sectional view illustrating the different devices necessary for implementing the destruction method.
FIG. 3A is a front view and
FIG. 3B is an elevation of the automatic piercing machine.
The object of the invention is hereafter described, in a non-limitative manner, illustrated by the drawings. The method is described in parallel with the description of the invention.
FIG. 1. The aerosol can (1) is positionned in front of a needle having a hollow body (2), made of steel or any other suitable material, so that, by motion of the aerosol can, the needle, or both, the needle penetrates the aerosol can. The needle is beveled so that it penetrates the aerosol can, making a total or partial cut, with or without operculum, so that this operculum (3) does not obstruct the needle. A sealing device (4) is inserted between the aerosol can and the needle thus ensuring the tightness of the system during operation.
For example, the sealing device can be a packing composed of two rubber cylinders of differing resiliance, the hardest rubber cylinder encircling the softer one, the shape of said packing being adapted to suit the needle and the aerosol can.
As shown on FIG. 1 the aerosol can is maintained in a downward tilted position so as to obtain a low point in the puncturing area of the aerosol can (1). This arrangement ensures a satisfactory transfer of the contents. As this area is rigid, deformation of the can is limited during piercing. A film (5) can be inserted between the packing (4) and the shoulder (6) permitting collection of eventual droplets occurring in the final stage of the emptying process during the separation of the can and the needle. The shoulder (6) of the needle (2) is connected to the low pressure tank (8) by means of a flexible or rigid piping (7) allowing the transfer of the aerosol can contents. The piping (7) is equipped with a check valve (9) which eliminates leaks; and thereby any contact between the recuperated products and the atmosphere. Moreover, an orifice (10) situated betwen t
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Nugues Francois
Robic Pierre H.
Douglas Steven O.
Recla Henry J.
Spiegel H. Jay
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