WO2017130084A1

WO2017130084A1 - Perfected composting machine

Info

Publication number: WO2017130084A1
Application number: PCT/IB2017/050295
Authority: WO
Inventors: Claudio PANSA
Original assignee: Pansa Claudio Costruzioni In Ferro
Priority date: 2016-01-27
Filing date: 2017-01-20
Publication date: 2017-08-03
Also published as: ITUB20160279A1

Abstract

A composting machine (100) comprises: a container (1) defining a compartment (10), at least one partition wall (2) which divides the compartment (10) into composting chambers (3, 3'), a loader (L) comprising loading means (7) for loading waste into the machine, movement means (5, 5') for moving the waste in the composting chambers and outside towards a subsequent composting chamber or towards the outlet (12); activation means (6) for activating the movement means, wherein a means is provided for detecting the presence of a user or of a vehicle supplying waste in proximity to the machine (100) and controlling, through an actuator (42a), the activation of a door (42) adapted to open/close an inlet opening (41) of the loader, said means being in connection/communication with a CPU (U) configured so as to control the actuator (42a) for opening the door (42) when the means detects the presence of the user or the vehicle, and closing the door (42) when the means no longer detects the presence of the user or the vehicle.

Description

DESCRIPTION

"Perfected composting machine"

Techincal field

The present patent application for an industrial invention relates to a composting machine. The reference sector is that of the treatment of organic waste.

Background art

Notoriously, organic waste is treated in order to transform it into compost, usable as natural fertilizer.

The transformation of organic waste into compost takes place using composing machines usually having a cylindrical shape and comprising a body that defines a first composting chamber and a second composting chamber, separated by a partition wall.

The partition wall comprises an opening for the passage of waste from the first composting chamber to the second composting chamber and a door, adapted to close the opening.

The body further comprises an inlet opening for introducing organic waste into the first composting chamber and an outlet opening for the passage of waste, transformed into compost, from the second composting

chamber to the outside.

Generally, the inlet opening and the outlet opening are closed by a first door and by a second door, respectively, which can be opened manually. Usually, the composting machine comprises a first auger conveyor arranged in the first composting chamber and activated by a motor for moving the waste from the first composting chamber to the second composting chamber, through the opening of the partition wall.

The composting machine further comprises a second auger conveyor arranged in the second composting chamber and activated by a motor for moving the waste from the second composting chamber to the outside, through the outlet opening of the body. The organic waste is introduced into the first composting chamber, through the inlet opening of the box frame, by acting manually on the first door. The first composting chamber is intended to contain the organic waste during the first days spent in the composting

machine.

After these first days have passed, the door of the partition wall is opened and the organic waste is transferred, via the first auger conveyor, into the second composting chamber, where it remains until it is transformed into compost.

When the organic waste is transformed into compost, the second door of the body is opened and the second auger conveyor is activated to allow the organic waste to exit the second opening of the body.

The first and/or the second composting chamber is intended also to contain a bulking agent (e.g. pellets, sawdust or straw pellets) for controlling the degree of moisture in the organic waste in the first and/or the second composting chamber and to balance the ratio between carbon and nitrogen, generated by the organic waste.

These known composting machines have some drawbacks.

A first drawback is due to the fact that it is not possible to calculate a quantity of bulking agent to be introduced into the first and/or the second composting chamber based on the weight of organic waste introduced into the first composting chamber, hence risking introducing an imprecise quantity of bulking agent. In fact, the quantity of bulking agent to be introduced is chosen based on an estimate of organic waste introduced into the first composting chamber and not based on a measurement of the weight of organic waste effectively introduced into the first composting chamber.

A second drawback is due to the fact that it is necessary to act manually on the first door for introducing the organic waste into the first composting chamber. This means that a user is forced to come into contact with the first door, running the risk of getting dirty. Furthermore, in the event in which the user transports the organic waste to be inserted in the composting machine with both hands, they would be forced to rest the organic waste on the ground, manually open the first door and insert the organic waste items one by one.

Another drawback of such composting machines consists of the fact that the auger conveyors manage to pick up and shred the organic waste only in an axial portion of the first and the second composting chamber, creating a mound of unshredded waste in peripheral portions of the first and second composting chamber.

Consequently, it is necessary to use special scrapers to pick up the organic waste arranged in the peripheral portions of the first and the second composting chambers.

Such auger conveyors can easily get stuck and jammed in the case in which, among the waste, there are very large and hard items of waste or particularly hard foreign bodies.

Furthermore, such auger conveyors are expensive and consume a lot of energy, due to the fact that for every auger conveyor an electric motor must be provided.

Another drawback consists of the fact that such composting machines must be protected against the action of weather agents that could cause the infiltration of water and moisture in the machine, compromising the correct operation. For this reason, canopies or constructions need to be provided in order to shelter such machines.

AU 2010 101 378 A4 relates to a device for the aerobic composting of organic matter which avoids the addition of bulking agents such as pellets in the chamber to soak up excess moisture, because the device has a perforated cylinder which allows excess liquid to efficiently drain into an external collector. The device needs to be fed manually and the weight of the organic material introduced cannot be calculated.

WO 2014/097325 A1 discloses a composting device for organic waste comprising an auger or a shaft with blades for conveying the waste towards the outlet; a filter at the inlet able to reduce to a minimum the possibility of inserting non-organic waste in the device; an opening for evacuating the gases produced by the fermentation; identification means for identifying the supplier of the waste and the quantity of waste, these data being read on identification devices. The composting device does not have an internal means for directly weighing the waste introduced.

US 7520457 B1 discloses a composting system with a shredding unit, a digestion chamber, an auger and a power unit. Sensors are present to detect any malfunctioning.

US2005/106715 A1 relates to a device for using organic waste material comprising a revolving cylinder placed on a tilting support frame. The support frame rests on sensors that measure the weight of the cylinder. However, the sensors measure the weight of the revolving cylinder for adjusting the water contents and temperature, whereas the weight of waste introduced is not controlled.

FR 3010646 A1 discloses a composting device comprising a huge revolving cylinder (length from 24 to 50 m and diameter of 3.5-5 m) and means for weighing the cylinder while the cylinder is placed in a particular raised position: The weighing means comprises hydraulic cylinders that also raise the cylinder when it is to be weighed while its revolution is prevented since the cylinder is not in contact with the rotating rollers.

All the devices shown in the above documents are rather complex and not adapted to achieve the aims of the present invention.

Object of the invention

The object of the present invention is that of overcoming the drawbacks of the prior art, providing an automatically opening composting machine able to consider the weight of the waste introduced on a case-by-case basis into the machine and such as to allow the introduction of an amount of bulking agent calculated based on said weight.

A further object is to provide a composting machine that is practical, cheap and efficient and that allows the organic waste contained in the whole volume of the first and/or the second composting chamber to be moved and with a particular thrust towards the zone where the outlet openings are located towards a subsequent chamber or towards the outside.

Said objects are fully achieved by the composting machine according to the present invention, which is characterised by what is contained in the claims stated below.

Brief description of drawings

This and other characteristics will become more apparent in the following description of a some preferred embodiments shown by way of a non- limiting example in the appended drawings, wherein:

Fig. 1 is an axonometric view of a composting machine according to the invention;

Fig. 2 is a section according to plane ll-ll of Fig. 1 , wherein the openings are closed by doors;

Fig. 3 is a block diagram schematically indicating the operation of the composting machine according to the invention;

Fig. 4 schematically illustrates a lateral view of the machine;

Fig. 5 schematically illustrates a view from above of the machine partially sectioned, according to a variant embodiment;

Fig. 6 schematically illustrates a blade;

Fig. 7 schematically illustrates a rear view of the machine in which the arrangement of the external augers is visible.

Detailed description of preferred embodiments of the invention

With reference to Figures 1 and 2 a composting machine is described according to the invention for composting waste, indicated overall with reference number 100.

The composting machine (100) comprises a drum or container (1 ) intended to be positioned on the ground with a horizontal axis and comprising a cylindrical lateral wall (16) open at the top, a front wall (17) and a rear wall (18). The walls (16, 17, 18) of the container define a compartment (10). The composting machine (100) comprises a partition wall (2) arranged inside the compartment (10) for dividing the compartment (10) into a first composting chamber (3) and a second composting chamber (3').

The partition wall (2) comprises an opening (20) afforded at the bottom and laterally on the partition wall (2) to let the waste pass from the first composting chamber (3) to the second composting chamber (3'). A door (21 ) is adapted to close the opening (20) of the partition wall (2) in such a manner as to prevent the waste from passing from the first composting chamber (3) to the second composting chamber (3').

The container (1 ) comprises an outlet opening (12) to let the waste pass from the second composting chamber (3') to the outside and a door (12') adapted to close the outlet opening (12). The outlet opening (12) is afforded on the rear wall (18) of the container (1 ), at a height from the ground greater than 60 cm, so that the organic waste, exiting from the outlet opening (12), falls due to gravity into a container (not shown) appropriately present and constituted for example a normal wheelbarrow. Advantageously, the container (1 ) comprises an upper opening (15) adapted to allow access to the composting chambers (3, 3').

The container (1 ) comprises a door (15') adapted to close the upper opening (15).

Such upper opening (15) may be used by an operator to check the composting of the organic waste and the filling of the composting chambers (3, 3').

Seal gaskets (G) are arranged at the upper opening (15) so that the door (15') hermetically seals the upper opening (15) in such a manner as to prevent the external weather agents from entering the compartment (10) of the container (1 ).

The composting machine (100) comprises a loader (L) for loading the waste into the first composting chamber (3) of the container.

The loader (L) comprises a box frame (4) abutting the front wall (17) of the container (1 ). The box frame (4) defines an inlet chamber (40) accessible through an inlet opening (41 ) into which the organic waste is inserted. The inlet opening (41 ) is afforded at the top on the box frame (4) and may be closed via a sliding door (42) or a pivoting door. Advantageously, the sliding door (42) is arranged at a height from the ground less than 100 cm, so as to be accessible to all users and also to vehicles adapted to supply waste to the machine.

The front wall (17) of the container acts as a partition wall for dividing the first composting chamber (3) from the inlet chamber (40) of the loader. The front wall (17) of the container comprises at the top an opening (45) for waste to pass from the inlet chamber (40) to the first composting chamber (3).

Advantageously, the composting chamber (100) comprises a presence sensor (S) arranged on the box frame (4) of the loader for identifying the presence of a user. The presence sensor (S) has a detection range preferably of about 1 metre (and however comprised between 0.5 and 1 .5 m); i.e. the presence sensor (S) or proximity sensor is configured so as to detect the presence of a user (or a vehicle) located at a distance comprised between 0.5 m and 1 .5 m from the presence sensor (S). The presence sensor (S) constitutes a means for detecting the presence of a user or a vehicle supplying waste in proximity to the inlet opening 41 .

With reference to Fig. 3, advantageously the sliding door (42) of the loader is activated to open automatically through one or more actuators (42a) not shown, in presence of the user or of the vehicle intended to supply waste to the machine, and is activated again automatically to close as they move away from the machine once the supply is complete. The composting machine (100) comprises a CPU (U), connected to the presence sensor (S) and to the actuator (42a) of the sliding door (42) of the loader (L). In this way the CPU (U) receives information on the presence of the user from the presence sensor (S) and controls the actuator (42a) which activates the sliding door (42) of the loaded (L) to close/open.

Returning to Figures 1 and 2, the loader (L) comprises loading means (7) for loading waste into the first composting chamber (3) through the opening (45) of the front door (17) of the container.

In particular, the loading means (7) comprises a pivoting door (70) that can rotate about a horizontal axis. The pivoting door (70) is connected to the front wall (17) of the container, at the opening (45) through a pin (P), in such a way that the pivoting door (70) passes from a closed configuration, wherein the pivoting door (70) closes the opening (45) of the front wall (17) of the container, to an open configuration wherein the pivoting door (70) is arranged horizontally in the inlet chamber (40) of the loader, below the inlet opening (41 ).

When the pivoting door (70) is in the open configuration, the pivoting door (70) acts as a bearing plane for the organic waste.

When the pivoting door (70) passes from the open configuration to the closed configuration, the pivoting door (70) causes the organic waste to drop into the first composting chamber (3) of the container.

With reference to the functional diagram of Fig. 3, the pivoting door (70) is activated in rotation by one or more actuators (70a) connected/communicating with the CPU (U). In this way, when the presence sensor (S) detects the presence of the user, the CPU (U) also controls the actuator (70a) of the pivoting door which causes the rotation of the pivoting door (70) about the pin (P), so that the pivoting door (70) passes from the closed configuration to the open configuration.

When the presence sensor (S) no longer detects the presence of the user, the CPU (U) controls the actuator (70a) of the pivoting door which activates the rotation of the pivoting door (70) about the pin (P), so that the pivoting door (70) passes from the open configuration to the closed configuration.

A load cell (C) is arranged on the pivoting door (70) of the loading means (7) and is configured in such a manner as to weigh the waste resting on the pivoting door (70) of the loading means (7) in the open and substantially horizontal position of the pivoting door (70). The load cell (C) is connected/communicating with the CPU (U) for sending information on the weight of the waste positioned on the pivoting door (70).

With reference to Fig. 3, the composting machine (100) comprises an auxiliary container (8) not shown, intended to be filled with a bulking agent, such as pellets, saw dust or straw, for bulking the organic waste contained in the compartment (10) of the container (1 ). The auxiliary container (8) may be arranged externally to the container (1 ) or inside the compartment (10) of the container.

The auxiliary container (8) is connected to a controlled doser (80) adapted to feed the bulking agent into the compartment (10) of the container (1 ), in the first (3) and/or the second composting chamber (3'). The controlled doser (80) comprises an electric motor which activates the doser (80) so as to feed a desired quantity of bulking agent. The controlled doser (80) is connected/communicating with the CPU (U).

The information on the weight of waste measured by the load cell (C) may be used to calculate the exact quantity of bulking agent to be introduced automatically into the first composting chamber (3). In fact, the CPU (U) controls the doser (80) so as to feed a quantity of bulking agent based on the weight of the waste detected by the load cell (C).

The composting machine (100) comprises a first movement means (5) arranged in the first composting chamber (3) for moving the waste from the first composting chamber (3) to the second composting chamber (3') through the opening (20) of the partition wall (2).

The composting machine (100) further comprises a second movement means (5') arranged in the second composting chamber (3') for moving the waste from the second composting chamber (3') to the outside through the outlet opening (12) of the container (1 ).

The first movement means (5) and the second movement means (5') are connected to an activation means (6) comprising an electric motor (60) and a shaft (61 ) that axially crosses the compartment (10) of the container (1 ) and that is moved by the electric motor (60). Advantageously, the electric motor (60) is dislocated in the box frame (4) of the loader (L).

The activation means (6) activate the first movement means (5) and the second movement means (5').

The first movement means (5) and the second movement means (5') comprise blades (50, 50a) that protrude radially from the shaft (61 ) of the activation means (6).

In particular, each movement means (5, 5') comprises intermediate blades (50a) arranged between end blades (50).

The end blades (50) of the first movement means (5) are arranged in pairs, in the first composting chamber (3), at the front wall (17) of the container and of the partition wall (2). The end blades (50) of the second movement means (5') are arranged in pairs, in the second composting chamber (3'), at the partition wall (2) and at the rear wall (18) of the container. Each end blade (50) comprises an arm (52) ending with a doctor knife (51 ) in the form of an inclined plane that runs near to the front wall (17), to the partition wall (2) and/or to the rear wall (18) of the container (1 ).

Each intermediate blade (50a) has a T shape with an arm (52a) ending with a doctor blade (51 a) which runs near to the cylindrical lateral wall (16) of the container and which is inclined so as to make the product advance towards the outlet (see Fig. 6).

When the presence sensor (S) identifies the presence of a user, the CPU (U) enables the opening of the sliding door (42) and the pivoting door (70). The user introduces the organic waste into the inlet chamber (40) through the inlet opening (41 ) and rests the waste on the pivoting door (70).

The load cell (C) detects the weight of the organic waste resting on the pivoting door (70) and sends the CPU (C) a signal indicating the weight of the waste. As a result, the CPU (U) controls the controlled doser (80) which doses the right amount of bulking agent to be inserted into the compartment (10) of the container (1 ) in compliance with the weight of the waste. When the presence sensor (S) no longer identifies the presence of the user, the CPU enables the closure of the sliding door (42) of the loader (L) and of the pivoting door (70) of the loading means (7).

When the pivoting door (70) closes it causes the organic waste to drop into the first composting chamber (3) through the opening (45).

The electric motor (60) of the activation means (6) is activated, so as to allow the rotation of the shaft (61 ) to which the blades (50, 50a) are connected, both of the first movement means (5) and of the second movement means (5').

The end blades (50) of the first movement means (5) near to the front wall (17) push the waste into a central part of the first composting chamber (3), towards the partition wall (2). The intermediate blades (50a) of the first movement means (5) shred the waste in the central part of the first composting chamber (3). The end blades (50) of the first movement means (5) near to the partition wall (2) push the waste towards the opening (20) of the partition wall (2), which is normally closed.

The passage of the waste from the first composting chamber (3) to the second composting chamber (3') takes place by opening the door (21 ) of the partition wall (2). In this way, the waste pushed by the end blades (50) of the first movement means (5) near to the partition wall (2), crosses the opening (20) of the partition wall and is introduced into the second composting chamber (3').

The opening of the door (21 ) of the partition wall (2) takes placed manually (through a leverage 30) or automatically through an actuator 21 a (not shown) controlled by the CPU (U), based on the time spent by the waste in the chamber. Advantageously, the CPU (U) may comprise a meter for counting the number of days that have passed from the first opening of the door (21 ) of the partition wall (2), corresponding to the first supply. The meter of the CPU (U) may be updated manually by the user or automatically, providing a sensor (S2) connected to the door (21 ) of the partition wall that detects when the door (21 ) opens and closes (see Fig. 3).

In this way, the CPU (U) manages to exactly calculate the weight of waste supplied to the first composting chamber (3) and the days that have passed from the first supply, for controlling, for example, the opening of the door (21 ) when at least 30 days have passed. Once all the waste has passed from the first composting chamber (3) to the second composting chamber (3') it is possible to close the door (21 ) of the partition wall (2), so as not to mix the waste contained in the second composting chamber (3') with new waste to be introduced into the first composting chamber (3). A meter (manual or automatic) counting the days spent in the first chamber is reset and the counting of the time spent by the waste in the first chamber starts again, while another meter starts to count the days spent by the waste in the second chamber.

The end blades (50) of the second movement means (5') near to the partition wall (2) push the waste towards the central part and the partition wall (18) of the container (1 ). The waste contained in the central part of the second composting chamber (3') is shredded again by the doctor knives (51 a) of the intermediate blades (51 ) of the second movement means (5'). The end blades (50) of the second movement means (5') near to the rear wall (18) push the waste towards the outlet opening (12) of the container

(1 )-

In the second composting chamber (3'), the organic waste is stored, guaranteeing compliance with the chemical conditions that allow the transformation of organic waste into compost.

The passage of the compost from the second composting chamber (3') to the outside takes place by opening the door (12') of the container (1 ). In this way, the compost is pushed into the outlet opening (12) of the inclined doctor knives (51 ) of the end blades (50) of the second movement means (5') near to the rear wall (18), and the compost falls by gravity to the outside. This happens when for example at least 30 days have passed from the supply into the second chamber. When the compost (spending at least 30-60 days in the machine) has exited from second composting chamber (3') it is possible to close the door (12') of the outlet opening (12) and open the door (21 ) of the partition wall (2), so as to allow the passage of the waste from the first composting chamber (3) (where it has been for 0 to 30 days) to the second composting chamber (3').

Therefore, the composting machine (100) envisages the processing of organic waste in a continuous cycle.

The advantages of the composting machine (100) according to the invention appear clear, envisaging the presence of the load cell (C) and the CPU (U) thanks to which the exact weight of bulking agent to be introduced into the first composting chamber (3) can be calculated and the exact weight of organic waste supplied can be known.

Thanks to the provision of the sliding door (42) of the loader controlled by the CPU (U) based on the information of the presence sensor (S), the user is not obliged to manually open the sliding door (42), since the sliding door

(42) opens when the user moves towards the opening (41 ) of the box frame (4).

Thanks to the use of movement means (5, 5') comprising blades (50, 50a) there is a notable cost saving since the blades (50, 50a) are all connected to a single shaft (61 ) and are activated by a single electric motor (6).

Furthermore, the use of blades that brush against the cylindrical lateral wall (16) of the container (1 ) enables all the waste contained in the composting chambers (3, 3') to be moved, without having to use scrapers. Furthermore, the blades (50, 50a) are able to shred a particularly hard item of waste, without risking the movement means (5, 5') getting stuck or jammed.

The use of the seal gaskets (G) on the upper opening (15) of the container allows the composting machine (100) to be used outside, without needing to shelter the composting machine (100) with canopies or constructions. Although reference has always been made to a presence sensor (S), constituted by a proximity sensor or the like, the presence sensor (S) may also be a magnetic or electronic reader, adapted to read magnetic badges or with chips associated with a user. In this way, when a user moves his/her badge towards the reader, the reader recognises the badge associated with a user and sends this information on the user to the CPU (U), which identifies the user and allows the sliding door (42) and the pivoting door (70) to open.

The load cell (C) detects the weight of the organic waste introduced by the user and sends such information to the CPU. The CPU associates the weight detected by the load cell (C) with the specific user authenticated with the badge.

The composting machine (100) has been described and illustrated in the specific case of the presence of a container (1 ) with two chambers (3, 3'), but it may also have more chambers, for example three or four, all in series with one another and in which the same shaft with blades operates. Furthermore, according to a variant embodiment not shown, the composting machine may comprise two or more chambers in series, each of which defines two paired environments (left and right) partially separated at the bottom by a bulkhead. A same rotary shaft with blades crosses all the right environments and another crosses all the left environments. Such shafts with blades, parallel to one another and preferably placed on the same horizontal plane, have inclined blades so as to promote the advancement of the material towards outlet openings, towards a subsequent chamber or towards the outside (if it is an opening in the final chamber).

The container 1 is preferably of the cylindrical type in the lower part (to allow the blades to "scrape" the product off the lateral wall 16) and square in the upper part, as shown schematically in figure 5, so as to facilitate the covering with a flat and not arched door 15'.

To promote and accelerate composting, each composting chamber may be equipped with a further opening (not shown) for introducing oxygen and possibly adding nitrogen, potentially with the presence of a fan equipped with a filter at least on the supply towards the outside, to prevent the spread of unpleasant smells into the environment surrounding the machine (while the filter is not necessary while air is being sent from the outside towards the internal composting chambers). The filter could possibly be movable so as to come into action only when the air flow is directed towards the outside.

According to a variant embodiment shown schematically in Fig. 5, in place of the leverage 30 or the actuators 21 a (or in addition to them to accelerate the transfer process of waste from one chamber to the subsequent one or to the machine outlet), it is possible to provide two external augers 31 and 31 ' activated by motorisation means 32 and 32', adapted to produce the quick transfer of waste.

The composting machine is preferably made of steel.

In relation to the composting process, according to the present invention, it shows some significant innovative aspects:

- automatic activation of the inlet door (42) (opening and closing) for the supply of waste in the presence of a user and/or supply vehicle whose presence is detected, with possible identification;

- direct weighing of the waste supplied on a case-by-case basis;

- automatic dosing of bulking agent according to the waste supplied;

- introduction of oxygen and/or nitrogen;

- filtration of the air leaving the machine to prevent the spread of unpleasant smells in the area where the machine is located;

- automatic advancement of the waste from one chamber to the subsequent one and to the machine outlet, according to the time spent in the machine and progressive compression of waste towards the outlet zone of each chamber (thanks to the inclined blades that push the waste towards the outside) so as to leave space at the inlet of the chamber for new waste to be inserted.

Claims

1 ) A composting machine (100) for composting waste comprising:

- a container (1 ) defining a compartment (10);

- at least one partition wall (2) arranged inside said compartment (10) for dividing the compartment (10) into at least two composting chambers (3,

3'); said partition wall (2) comprising an opening (20) to let the waste pass from one composting chamber to the next or towards an outlet (12);

- a loader (L) comprising loading means (7) for loading the waste into a first composting chamber (3);

- movement means (5, 5') arranged in each composting chamber (3, 3') for moving the waste into the composting chambers and outside towards a subsequent composting chamber or towards the outlet (12);

- activation means (6) for actuating the movement means, characterized in that it comprises means for detecting the presence of a user or of a vehicle supplying waste in proximity to the machine (100) and controlling, through an actuator (42a), the activation of a door (42) adapted to open/close an inlet opening (41 ) of the loader, said means being in connection/communication with a CPU (U) configured in such a way as to control the actuator (42a) for opening the door (42) when the means detects the presence of the user or of the vehicle, and closing the door (42) when the means does not detect the presence of the user or of the vehicle.

2) The composting machine (100) according to claim 1 wherein means for identifying the user or the vehicle supplying waste are also provided.

3) The machine according to the preceding claims, comprising a load cell

(C) associated with the loading means (7) and configured to weigh the waste loaded on a case-by-case basis into the machine, wherein the CPU (U) is connected/communicating with said load cell (C) for receiving information about the weight of the waste detected by said load cell (C). 4) The machine according to claim 3, comprising:

- a container (8) containing a bulking agent to be introduced into the compartment (10) of the container (1 ) for bulking the waste, and

- a doser (80) connected to said container (8) and configured in such a manner to dose the weight of the bulking agent to be introduced into said compartment (10) of the container (1 ); said doser (80) being connected/communicating with said CPU (U) in such a manner to dose the weight of the bulking agent in compliance with the weight of the waste detected by said load cell (C).

5) The composting machine (100) according to any one of the preceding claims, comprising:

- a door (21 ) adapted to close said opening (20) of the partition wall (2) in such a manner as to prevent the waste from passing from the first composting chamber (3) to the second composting chamber (3'),

- a sensor (S2) associated with said door (21 ) to detect its opening/closing status, said sensor (S2) being connected/communicating with said CPU (U) to inform the CPU (U) about the opening and closing of the door (21 ).

6) The composting machine (100) according to claim 3, wherein said loading means (7) for loading the loader (L) comprise a pivoting door (70) that can rotate about a horizontal axis; said load cell (C) being arranged on said pivoting door (70) for weighing the waste resting on said pivoting door (70).

7) The composting machine (100) according to any one of the preceding claims, comprising:

two or more chambers in series, each of which defines two paired environments (right environment and left environment) and partially separated at the bottom by a bulkhead, a same rotary shaft with blades crossing all the right environments and another crossing all the left environments, said shafts with blades, parallel to one another and placed on the same horizontal plane, being provided with inclined blades so as to promote the advancement of the waste towards outlet openings towards a subsequent chamber or towards the outside.

8) The composting machine (100) according to any one of the preceding claims wherein each composting chamber is equipped with a further opening for introducing oxygen and possibly adding nitrogen, with the aid of at least one fan equipped with a filter on the delivery towards the outside, to prevent the spread of unpleasant smells into the environment surrounding the machine.

9) The composting machine (100) according to any one of the preceding claims wherein each composting chamber is externally associated with an auger (31 , 31 '), with related motorisation means (32, 32'), for facilitating the transfer of waste from the composting chamber to a subsequent composting chamber or to the outlet (12).

10) The composting machine (100) according to any one of the preceding claims wherein the movement means (5, 5') comprise blades (50, 50a) with doctor knives (51 , 51 a) inclined so as to move the waste towards a subsequent composting chamber or towards the outlet (12).

1 1 ) The composting machine (100) according to any one of the preceding claims wherein the container (1 ) comprises:

- an upper opening (15) adapted to provide access to the composting chambers (3, 3'),

- seal gaskets (G) arranged at said upper opening (15),

- a door (15') adapted to hermetically seals said upper opening (15) in such a manner as to prevent the external weather agents from entering the compartment (10) of the container (1 ).

12) A process for composting organic waste through the supply of waste into a composting machine provided with a plurality of composting chambers, characterised in that it envisages the automatic activation of an inlet door (42) (opening and closing) for the supply of waste in presence of a user and/or vehicle supplying waste whose presence is detected, with possible identification.

13) The process according to claim 12, comprising the direct weighing of waste supplied on a case-by-case basis.

14) The process according to claim 13, wherein the automatic dosing of bulking agent is envisaged according to the weight of waste supplied. 15) The process according to any one of claims 12 to 14, envisaging the filtration of the air leaving the composting machine, to prevent the spread of unpleasant smells in the area where the machine is located.