ITMO20090054A1 - BIDON FOR HOME WASTE SUITABLE FOR CONFERRAL WITH VOLUMETRIC MEASUREMENT - Google Patents

Description

BIN FOR HOUSEHOLD WASTE SUITABLE FOR CONFERENCE WITH VOLUMETRIC MEASUREMENT.

DESCRIPTION

Field of application

The present invention refers to a bin for household waste suitable for delivery to collection points with volumetric measurement of the waste, i.e. a device for housekeeping in which to collect household waste and prepare it for delivery, in special collection points in the cost of the disposal service is commensurate with the volume of waste delivered.

Known art

The state of the art comprises the known bins of various shapes and sizes in which the user places the gradually generated waste to prepare it for delivery. These bins are generally equipped with a lid and in some embodiments are equipped with a manual or mechanical device for pressing the waste while waiting to take it to the place of delivery.

In the prior patent DE 19500049 a bin for reducing the volume of domestic waste is described in which the waste is placed in the bin and is compressed to reduce its volume and transport it better. The bin includes an upper bridge and a mechanical device, shown with screw and external crank, which presses a plate on the waste towards the bottom of the bin; the plate can descend and extract the air from the waste, so as to transport and store it at a lower cost; during compression the jumper is tightened to the bin wall.

To date, waste collection managers are used to commensurate the waste conferred in volume to determine the cost and rate of the waste itself, as it is made with devices considered much cheaper and less subject to failures than those operating with weighing. The conferment takes place by introducing a bag into a predefined volume from a drawer or compass, generally rotating, at the collection point: the user is measured the number of contributions, considering that he can fill the volume of the said drawer very or little or bussola, receiving the same charge being commensurate with the number of volumes conferred. Thus the delivery without compression of the waste consigned generates a greater number of volumes consigned and consequently a higher cost to the user for the same waste disposed of. A user, generally domestic, that is often not careful to place waste in the bin in an appropriate way, in order to better exploit the volume delivery, therefore needs to deliver his waste with smaller volumes at greater intervals; the state of the art does not offer a valid support, resulting in the known bin being impractical and slow if not really uncomfortable to use.

A use with waste compression in a disordered way, by means of non-dedicated bags and / or containers, leads to giving the drawer or compass a volume that tends to be greater than the capacity of the drawer itself, nullifying the practicality of the conferment given that the waste may have been previously compressed , causing inconvenience to the service user if the complete filling of the drawer is not reached, and also the collected volume may be higher than that accepted.

Even more, the compression of the waste can take place in subsequent moments and between one compression and the next time can also pass, so as to generate in the waste the emission of unpleasant odors of parts that decompose or ferment. Therefore, an aspect not solved by the prior art is that of avoiding the emission of odors by making it possible to compact and store the waste in a domestic environment, as long as it is not ready for delivery, i.e. it has reached a sufficient volume to have an acceptable proportion with the rate of the single transfer charged by the operator to the user.

Finally, the compression and waiting for a sufficient amount of waste to be accumulated leads to variable times depending on the user's domestic production of waste and their volume and compression. Waiting can, as mentioned, lead to the formation of unwanted odors and to a continuous opening and closing movement of the bin to carry out the subsequent collection actions.

This state of the art is susceptible of considerable improvements with regard to the possibility of making a bin for the collection of household waste which overcomes the aforementioned drawbacks and limitations and allows the waste to be preordered for delivery to a predetermined volume.

The technical problem, therefore, at the basis of the present invention is that of realizing a bin for the collection of domestic waste in which the parts are made for rapid intervention and that the compressed waste can be kept in compression for a longer time than action of the user in order to make the refusal with a minimum volume and close to the acceptable volume at the delivery at the collection point.

A further and not least object of the present invention is to allow the realization of a bin that allows to avoid the emission of unwanted odors if the waste, while waiting for further collection, remains inside for a long time such as to allow the user to collect the refusal at subsequent times, which normally also occur over several days.

Another object of the invention is to provide a domestic waste collection bin that is easy to use for collection at home, but also for delivering the waste to the collection point with the maximum volume acceptable by the volumetric collection device used by the manager.

Summary of the invention

This problem is solved, according to the present invention, by a bin for domestic waste suitable for delivery to collection points with volumetric measurement of the waste, comprising a volume inside the bin in which a waste collection bag is housed, subsequently removable, stopped on the upper edge of the inner wall of the bin and in which a mechanism guides a pressure member to compress the waste within the volume and bag, and having associated with the bin an openable lid on which the presser member is guided, for the introduction of the waste and their compression, characterized by what it presents, the internal volume and the volume of the bag, after complete filling and compression, with conformation and maximum dimensions such as to be able to introduce the bag, taken from the bin, into the volumetric measuring mechanism of the waste , prepared in the collection point, filling it completely

In a further constructive embodiment: the said bin, has the edge of the bag and is held in an annular recess outside the upper edge of the inner wall of the bin and stopped therein with a ring on the said upper edge within the said annular recess.

More still, in a specific embodiment a bin has the bag made adherent to the internal wall of the internal volume of the bin and to its bottom, by extracting the air remaining between the bag and the wall and the bottom after its introduction; at least one hole in the wall or in the bottom is provided for the extraction of the air or for the return of the air when extracting the bag.

Furthermore, advantageously, a bin has a pressure member consisting of a piston on the outer edge of which a soft anti-friction gasket is housed, for sealing on the internal wall and, therefore, on the bag; on the piston there are two one-way valves to allow the escape or re-entry of air into the internal volume following the compression or lifting motion of the piston.

Even more, in a specific embodiment: the aforesaid bin has the pressure member guided by an axial rod to the internal volume, connected and sliding on the lid, as well as lockable by means of a stop in the position reached.

In addition, in an improved form: the aforementioned bin has a unidirectional microvalve associated and interposed with said hole between the outside and the internal volume to block the return of air after the extraction of the air; annular, radial and / or vertical channels are preferably present in the inner wall and in the bottom of the bin to facilitate the extraction of air.

Even more, in a preferred form: in addition to the hole with the unidirectional microvalve, in addition to the hole with the one-way microvalve, a further hole is present, connected inside the volume like the previous one, for the return of air or the blowing inside the volume of the bin and obtain an easy extraction of the filled and pressed bag.

An improved constructive form of the bin has an elastic element associated with the rod for recovering the raised position when the stop is released. Finally, in a further constructive embodiment of the bin it has the hinge pin connected to a wall external to the wall of the bin and has a direction normal to the direction of movement of the pressure member.

The characteristics and advantages of the present invention, in the realization of a bin for domestic waste to be delivered to collection points with volumetric measurement of the waste, will result from the description, given below, of an example of realization given as an indication and not of limitation with reference to the four attached drawing tables.

Brief description of the drawings

Figure 1 represents a schematic section of the bin seen in schematic section of the bin open according to the invention and ready for the collection of the waste by the user;

Figure 2 represents a schematic section of the bin of Figure 1 in the closed position;

Figure 3 represents a schematic sectional view of the bin of Figure 1 in the closed position and compressing the waste collected therein;

Figure 4 represents a schematic rear side view of the bin, without the lid and provided with the holes for the suction and return of air for the adhesion and detachment of the bag to the inner wall of the bin;

Figure 5 represents a schematic section V-V of Figure 4, to highlight the ducts on the bottom and on the side wall for the inflow and outflow of air;

Figure 6 represents a schematic perspective view in which a pump, similar to a plastic syringe, extracts the air between the bag and the wall; Figure 7 is an enlargement of the detail view VII of Figure 6;

Figure 8 is a schematic side view of the bin with the aforementioned pump inserted for extracting the air;

Figures 9, 10 and 11 in perspective view are schematic views of the bin according to the invention, the first closed and in compression, of Figure 3, the second closed and ready for opening, of Figure 2, and the third perspective view open for the collection of waste, in Figure 1.

Detailed description of a preferred embodiment

Figures 1-5 show a bin 1, for collecting and compressing the waste at a predetermined volume, according to the invention, comprising a lid 2, hinged to the side wall 3 of the bin on the pin 4; between the pin and the wall 3 there is an annular recess 5 for separating the internal wall 6 and an external portion of the wall 7 to create a reduced 8, for the retention of the upper edge of a waste collection bag, when housed inside the bin: the bag is not shown in the figures. The edge of the bag is wound down into the annular recess 5 and / or the reduced 8 and held there with an elastic ring, similar to a common ring made of elastic or rigid material, of a size such as to tighten the edge of the bag on the upper edge 9 of the wall within the annular recess 5: similarly to the bag, the rigid or elastic ring is also not shown. Furthermore, the bag is made with a size such as to completely wrap the internal wall 6 of the bin and to fill the internal volume 10 against the bottom 11. One or two small holes 12 are made in the wall 6 near the bottom 11, to suck up the air trapped inside the bin after placing a new bag and making the bag adhere to the wall, associated with a one-way maintenance microvalve 13; air aspiration can be performed with a common piston pump (similar to a syringe); the small hole is in communication with an annular channel 14 between the bottom 11 and the internal wall 6; radial channels 15 are formed in a radial pattern on the bottom 11 joining in the center 16 of the bottom; vertical channels 18 are formed on the inner wall 6 in the lower portion 17 in correspondence with said radial channels; Furthermore, an additional small hole 19 is provided, closed by a sealed capsule 20, to allow the return of air or forced insufflation and to detach the bag from the internal wall 6 and the consequent extraction. In the latter operation, the sealing capsule 20 must be applied to the small hole equipped with microvalve 13.

In this way the internal volume 10 of the bin 1 is lined with a bag adhering to the wall and to the bottom and which has the upper open edge folded and retained inside the annular recess 5 and / or reduced 8.

In the bin there is a piston 21 axially movable in the volume 10 and guided in its compression movement by means of a rod 22, of appropriate length to perform the first level of compression of the waste introduced into the bin. A soft anti-friction gasket 24 is housed at the outer edge 23 of the piston, which is placed in contact with the inner wall 6 during the compression stroke, obviously against the bag, which has been made to adhere to it as mentioned above. In the piston there are two unidirectional air bleed valves 25 and 26, here advantageously ball valves, to allow the bleeding of the air from the pressed volume of waste, the 25, in the downward compression stroke, and also to allow the return of the air to the reverse stroke, the 26, to allow the opening, i.e. the upward stroke of the piston 21, up to the open position of Figure 2.

At the upper end 27 of the rod 22 there is a knob 28 to facilitate the manual compression action of the user on the rod itself. A spring 29, here advantageously spiral, is associated with the rod to make the lifting stroke of the piston 21 autonomous, from the compression position (Figure 3) to the open position (Figure 2); the compression position of the piston 21 on the waste is reached and maintained with the aid of a one-way brake 30, shown here with a bead 31 pushed against the side 32 of the rod 22 by an internal clamping spring 33; the lifting stroke is made automatic by pressing the release lever 34 of the brake 30: the elastic return of the spring 29 makes the lifting stroke of the piston 21 autonomous and automatic; even in the presence of the seal of the soft gasket 24 on the wall 6, and against the bag adhering to it, the valve 26 allows the re-entry of air into the volume 10. The cover 2, in opposition to that of the pin 4, has a prominence 35 to make it easier for one finger to grasp the lid when lifting.

The housing of the bag within the volume 10-17 takes place in a simple way, after inserting the bag into the volume and stopping the upper edge within the annular recess 5 or reduced 8, through a small hole 12 and the microvalve 13, it causes the vacuum necessary to make the bag adhere to the inner wall 6 of the bin 1, by sucking the air with a manual pump 36 (similar to a syringe) or by sucking it like a straw with a tube, thus making the bag adhere , to avoid dragging of the bag by the piston 21, more likely in the first runs with the bag still substantially empty. The adhesion to the inner wall 6 of the bag is facilitated by the radial channels 15 on the bottom 11 of the bin, by the annular channel 14, which connects the radial channels 15, the vertical channels 18 and the hole of the microvalve 13 from which the 'air. On the other hand, the other small hole 19, provided for the return of air, must remain well closed with a sealed capsule 20 as it communicates with the annular channel 14 and the other radial and vertical channels mentioned above.

The operation of the bin 1, according to the invention, occurs with the motion of the piston 21 in its compression stroke which is sealed even in the presence of the bag, indeed the piston makes a seal on the bag by means of the soft anti-friction seal 24. With the seal of the piston 21 there is the cancellation of the escape of odors and a lower production thereof, as the cancellation of the free volume above the waste, implemented by the piston 21 and the compression, which is maintained until the new opening for the laden with other waste, they reduce, if not cancel, its production. The unidirectional valves 25 and 26 allow the up and down movements of the piston 21, since the piston with peripheral seal moves in a closed volume, precisely to avoid the spread of odors in the environment.

The second small hole 19 is used for the expulsion of the full and compacted bag, when the waste bag must be transported to the delivery point having reached the maximum delivery volume accepted and pre-ordered by the manager. The sealed capsule 20, when extracting the bag, can be placed to close the hole 12 with microvalve 13, and if the detachment of the bag is difficult, it is possible to blow in air forcing it with the pump 36.

In use and following subsequent opening and closing operations, with the compression of the waste, the position of the piston 21 will be raised more and more, with a lower compression of the spring 29, up to zero when the bin 1 is full, having reached the maximum volume of conferment. The compression position of the piston, after a certain filling and therefore a certain deposit time, is that of canceling the air and therefore the oxygen above and inside the waste by means of manual compression and subsequent holding of the position reached, by means of the action of the brake 30, with the spring 33 it presses the bead 31 acting on the rod 22, on the cover 2 which contrasts the spring 29 of the rod to prevent it from rising. A possible "springback" of waste is negligible. The spring 29 and the brake 30 on the rod 22 have the function of allowing the bin 1 to be opened with one hand, keeping the other hand occupied by the waste to be introduced; the opening sequence is thus preordained: pressure with the thumb finger of the free hand of the stop 26, subsequent ascent of the piston 21 due to the effect of the spring 29, which occurs due to the re-entry of air into the volume 10-17 through the one-way valve 26, subsequently it is possible to open the lid 2 with the index finger of the same hand by acting on the protuberance 35.

After placing the waste in the bin 1, the user releases the lid 2, so the piston 21 is once again facing and aligned with the volume 10-17. The user can, to complete the operation, push on the knob 28, that is on the rod 22 and with the piston 21 compress the waste just introduced. The air inside the waste and in the volume 10, underneath the piston 21, in the compression stroke exits through the one-way valve 25, once the desired compression level has been reached, the brake 30 holds the rod 22, i.e. the piston 21, at the level reached up. The seal between the piston and the inner wall 6 of the bin allows any odors produced inside the bin to not expand to the surrounding environment.

The advantages of using the bin can be summarized as follows. The bin can be pre-ordered at the delivery volume established by the waste collection manager; the collection bag that can be housed in the bin is calibrated with the volume compartment 10-17 and the drawer or compass of the volumetric measuring device at the collection point. The vacuum adhesion of the bag to the inner wall 6 of the bin 1 allows the piston 21, moving inside the bin, to carry out the compression and, following the maintenance of the compression position reached, be effective in limiting the production of unpleasant odors. due to the cancellation of the volume above the waste, especially in the last period before delivery, the most critical for the first waste introduced, which after a long stay can emit unpleasant odors. To avoid problems of air pressure (on closing) and depressions (on opening), the piston is equipped with two one-way ball valves. The opening of the bin with the piston 21 in the compression position, Figure 3, is not possible due to the effect of different rotation trajectory of the position of Figure 1 and Figure 3 of the piston around the pin 4, i.e. the position with the bin 1 closed and the piston in compression, Figure 3, is stable even without a specific means of stopping the cover. The bin can be operated with one hand only, in fact the piston lifting spring acts, by loosening the brake 30, on the lever 34, to be pressed to obtain the ascent of the piston 21 and then with a finger lift the cover 2 by acting on the prominence 35. A further advantage is the pneumatic expulsion of the full bag by blowing into the lower hole 19 by hand or with a pump 36 (similar to a syringe).

Obviously, a person skilled in the art, in order to meet specific and contingent needs, can make numerous changes to the bin for domestic waste to be delivered to collection points with volumetric measurement of the waste, as described above, all of which are contained within the scope of protection of the present invention as defined by the following claims. Thus, although less advantageously, the rod 14 can be made longer, due to the almost total compression of the waste, even of small initial quantities, it will however have a large bulk when opening (Figure 1). Furthermore, the one-way brake 22 could be replaced by a toothed stop, in place of the heel 23, with free motion in compression and controlled in opening. Furthermore, albeit less advantageously, the unidirectional microvalve (13) can be of the mechanically yielding type, that is, it can be controlled from the outside, to obtain its opening. Finally, the plan conformation of the bin 1 could have a different shape from the circular one shown (Figure 5), if the collection point, pre-ordered by the waste collection manager, requires a different shape, such as a square base, hexagonal, octagonal etc. .

Claims (10)

CLAIMS 1. Bin for household waste suitable for delivery to collection points with volumetric measurement of the waste, comprising an internal volume (10-17) to the bin (1) in which a waste collection bag is housed, subsequently removable, stopped on the edge top (9) of the inner wall (6) of the bin and in which a mechanism (22) guides a pressure member (21) to compress the waste within the volume and bag, and having associated with the bin an openable lid (2) on which the pressure organ is guided, for the introduction of waste and its compression, characterized by what it presents, the internal volume (10-17) and the volume of the bag, after complete filling and compression, with maximum conformation and dimensions such as to be able to introduce the bag, taken from the bin (1), into the volumetric measuring mechanism of the waste, arranged in the collection point, filling it completely. Bin for household waste according to claim 1, wherein the edge of the bag is held in an annular recess (5) outside the upper edge (9) of the inner wall (6) of the bin (1) and stopped therein with a ring on said upper edge within said annular recess. Bin for household waste according to one of claims 1, 2, wherein the bag is made adherent to the inner wall (6) of the inner volume (10-17) of the bin (1) and to its bottom (11), by extraction some ana remains between the bag and the wall and the bottom after its introduction; at least one hole (12) in the wall or in the bottom is provided for the extraction of the anus or for the re-entry of the anus when extracting the bag. 4. Blister for household waste according to claim 3, in which the pressure member consists of a piston (21) on whose outer edge (23) a soft anti-friction gasket (24) is housed for sealing on the inner wall and, therefore , on the bag; on the piston there are two one-way valves (25, 26) to allow air to escape or re-enter the internal volume (10) following the compression or lifting motion of the piston (21). 5. Household waste bin, according to claim 3, in which the pressure member is guided by an axial rod (22) to the internal volume (10), connected and sliding on the lid (2), as well as lockable by means of a stop ( 30) of the position reached. 6. Can for household waste according to claim 5, wherein the driving stop of the pressure member is constituted by a one-way brake (30), comprising a heel (31) pushed against the side (32) of the rod (22) by an internal clamping spring (33). 7. Can for household waste according to claim 3, in which a one-way microvalve (13) is associated and interposed to said hole between the outside (3) and the internal volume (10-17) to block the return of air after air extraction; annular (14), radial (15) and / or vertical (18) channels are preferably present in the inner wall (6) and in the bottom (11) of the bin to facilitate air extraction. 8. Bin for household waste according to claim 7, in which in addition to the hole with one-way microvalve (13) there is a further hole (19), connected inside the volume (10-17) as the previous one, for the return of air or blowing inside the volume of the can and obtaining the extraction of the bag. 9. Bin for household waste according to one of the preceding claims, in which an elastic element (29) is associated with the rod (29) for recovering the raised position upon release of the stop (30). 10. Bin for household waste one of the preceding claims, in which the hinge pin (4) is connected to an external wall (7) to the wall of the bin (1) and has a direction normal to the direction of movement of the pressure member.