Abstract:
Machine provided with a main chamber ( 1 ) with two lower compartments ( 8 ) and ( 11 ) defined by an intermediate partition ( 9 ) communicated on their upper part, compartment ( 8 ) establishing a purine preheating coil ( 5 ), an extension of the out-put tube ( 4 ) of a burner combustion chamber ( 2 ) for obtaining a solid phase of said purines by their instantaneous desiccation. Coil ( 5 ) additionally acts as elevating wheel of the purines towards a tray ( 12 ) located on combustion chamber ( 3 ), which pours on the latter, the residues falling towards a bottom collector tray ( 15 ), from where they are brought out to the exterior of the chamber ( 1 ), whilst the gaseous phase (water and methane vapour) comes out of chamber ( 1 ) through out-let ( 22 ) for subsequent separation from its components.

Description:
OBJECT OF THE INVENTION  
         [0001]    The present invention refers to a machine that has been specially conceived for treatment of swine excrement, those commonly called “purines”, though said machine is equally used for the treatment of the excrements of other animals.  
           [0002]    The object of the invention is to achieve a transformation of said excrement that avoids the effects of environmental contamination, inherent to the same.  
         BACKGROUND OF THE INVENTION  
         [0003]    In a preferred scope of the practical application of the invention, that of the purine of swine, an enormous amount of purine is currently produced, that in principle is stored at farm level, in tanks dimensioned for this purpose and that are subsequently scattered over the country side in order to achieve the natural transformation of the same and the subsequent fertilizing of the land, in amounts regulated by the different public administrations.  
           [0004]    Due to its high level of contamination, relative legal standards exist as regards the areal amount of purine that can be used on the soil and as regards the frequency with which said process can be repeated, but in practice, these standards are not strictly complied with, implying the consequent environmental damage, since more purine is produced, than that necessary for cultivation fertilizing.  
         DESCRIPTION OF THE INVENTION  
         [0005]    The machine for the treatment of purines proposed by the invention, solves the previously indicated problem in a totally satisfactory manner, permitting a perfect depuration of the excess purines and achieving as a result, a dry extract, in addition to methane gas, the latter being of use as fuel for the actual machine and for any other application.  
           [0006]    For this, and more specifically, the machine is structured as from a chamber that includes a burner capable of reusing the actual methane gas obtained from the facility or any other type of fuel, and its combustion supplies the combustion gases to a coil also included inside the actual machine, from which the gases finally exit to the outside through the corresponding chimney, said coil having a double function, on the one hand acting as preheating means for the purines that are previously beaten to achieve an adequate dissolution of possible solid residues, and on the other hand acting as feeding wheel of said purines towards a tray located over the burner combustion chamber, and that pours the preheated purines over the latter, the coil working zone obviously being made independent by means of a structural separation from the combustion chamber service zone by means of a suitably dimensioned steel plate separation.  
           [0007]    To achieve this second effect of said coil, a series of tubes, open at their ends, are constructed to form integral part, being filled with purines when they occupy the lower end position and that, due to a specific slope, pour onto said tray when these are in their top limit position.  
           [0008]    The high temperature reached in the burner fuel chamber converts the purines practically instantaneously into a dry element, with evaporation of the water initially contained in said purines and with the generation of methane gases.  
           [0009]    The solid substance falls on a lower collection tray aided by an extraction worm, whilst, on the external burner combustion chamber surface, a descaling scraper acts, that operates by weight and that removes the solid residues adhered on said chamber, also falling on the lower collector tray.  
           [0010]    Obviously, in order that the coil can act as purine elevating wheel, and so that the scraper or descaler can act on the burner fuel chamber, it has been provided that both the coil and the chamber be equipped with a rotating and constant movement, supplied by an engine detached from the main chamber, from which the collector worm engine and the actual burner are also detached.  
           [0011]    The gases generated inside the main chamber exit to the outside to be lead towards a decanter in which the water is extracted from the same, subsequently passing on to a caustic soda boiler for extraction of the methane gas acids, which, once clean, pass on to a storage tank.  
           [0012]    The main chamber shall be equipped with safety valves that limit the maximum pressure inside the same, establishing in turn, at the gas out-puts, one-way valves that prevent the back flow of gases. 
       
    
    
     DESCRIPTION OF THE DRAWINGS  
       [0013]    In order to complete the description being made, and with the object of aiding the better understanding of the characteristics of the invention, according to a preferred, exemplary practical embodiment of the same, this description is enclosed, forming integral part of the same, with a set of drawings in which, with illustrative and non limitative character, the following have been represented:  
         [0014]    [0014]FIG. 1 shows a side elevational diagram of a machine for treatment of excrements carried out according to the object of this invention.  
         [0015]    [0015]FIG. 2 shows an axial detail of the coil that is a component of said machine.  
         [0016]    [0016]FIG. 3 shows a perspective detail of the purine distributing tray over the fuel chamber.  
         [0017]    [0017]FIG. 4 shows a diagram corresponding to the treatment of gases generated during the normal operation of the machine.  
         [0018]    [0018]FIG. 5 shows a diagram of the scraper for removing incrustations of dry purine that may have remained adhered to the fuel chamber.  
         [0019]    [0019]FIG. 6 shows the beaten purine collection tank that feeds the distributing tubes over the fuel chamber.  
         [0020]    [0020]FIG. 7 finally shows the prior tank for storage of purines that are beaten inside the same. 
     
    
     PREFERRED EMBODIMENT OF THE INVENTION  
       [0021]    In view of the specified figures and specially of FIG. 1, it can be observed how the proposed machine is constituted as from a main cylindrical chamber ( 1 ), with horizontal axis, to which a burner ( 2 ) is coupled at one of its ends, that can use any conventional fuel, advantageously associated to a combustion chamber ( 3 ), the gas out-let tube ( 4 ) of which, obviously in opposition to the burner ( 2 ), extends into a coil ( 5 ) of considerable diameter, that emerges to the outside of the oven and is finished off in the form of a cooling chimney ( 6 ) for fuel gases.  
         [0022]    Main chamber ( 1 ) is provided with an in-put ( 7 ) for the purines that have been previously subjected to the effect of beating in the tank of FIG. 7, in such a way, that said purines fall into a compartment ( 8 ) of said chamber, as shown in detail in FIG. 6, and which is protected by an intermediate steel plate ( 9 ) separation, that separates them from the zone where the combustion chamber ( 3 ) is located, this separator ( 9 ) is interrupted over said combustion chamber ( 3 ) and as regards from which, coil ( 5 ) projects at the top part, which includes, attached on its internal perimeter, a plurality of discharging tubes ( 10 ), that at the top limit situation, adopts a slope towards the compartment ( 11 ) in which the combustion chamber ( 3 ) is situated, and that acts as wheel, filling with purine when occupying the lower zone of the chamber ( 8 ) and pours towards the chamber ( 11 ) when occupying the top end position, this pouring being performed specifically onto a tray ( 12 ) represented in detail in FIG. 3, equipped at its bottom with a longitudinal groove ( 13 ) that remains superimposed over the combustion chamber ( 3 ), also cylindrical, in such a way, that the purines fall over the latter, which is subjected to a rotational and constant movement, in the same manner as the actual coil ( 5 ), by means of an engine ( 14 ), located at the end of the main chamber ( 1 ), as is also observed in FIG. 1.  
         [0023]    In accordance with this structure, the purines that fall into compartment ( 8 ) are advantageously titrated towards tray ( 12 ) during the rotational movement of the coil ( 5 ) and fall through groove ( 13 ) on the top base of the combustion chamber ( 3 ) that is also rotating, so that said purines, which have been previously preheated by the coil ( 5 ) in compartment ( 8 ), when contacting with the fuel chamber ( 3 ) are converted into solid phase that falls towards a lower collector tray ( 15 ), and into a water vapour and methane gas mixture that occupies the main chamber ( 1 ).  
         [0024]    A scraper or descaler ( 16 ), described in detail in FIG. 5, that acts by counterweight ( 16 ′) over the external surface of the combustion chamber ( 3 ) to prevent the solid residues from adhering on the same, and a worm ( 17 ) removes the solid residue from the collector tray ( 15 ) activated by an engine ( 18 ) towards the out-put ( 19 ).  
         [0025]    Chimney ( 6 ) shall be equipped with a plurality of separator plates ( 20 ) so that the combustion gases cool advantageously before reaching the environment.  
         [0026]    For an optimum operation of the machine, the combustion chamber ( 3 ) service temperature shall be comprised between 250° C. and 350° C., and the main chamber ( 1 ) shall be equipped with safety valves ( 21 ) that limit the pressure existing in the same, and which also carry a burner disconnection system when the temperature rises more than planned.  
         [0027]    The purine gases emitted exit from main chamber ( 1 ) through out-put ( 22 ) preferably provided with a stopcock and pass on to a decanter ( 26 ), through a conduit ( 24 ) provided with one-way values ( 25 ), to reach a decanter ( 26 ) where the water vapour condensation and its corresponding extraction is produced, whilst the methane gas comes out of the decanter ( 26 ) through conduit ( 24 ) to reach a second decanter or bubbler ( 27 ) provided with liquid caustic soda, with another one-way valve at its out-put, with depressor ( 28 ) finally passing the methane gas to a tank ( 29 ), preferably constructed of rubber and of the bellows type, from which said gas can be used, for example, to feed engine ( 30 ) which activates an electric generator ( 31 ) for the use of the obtained electric current.