ES2937062A1 - Device for feeding boilers and stoves using pellets (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Device for feeding boilers and stoves using pellets. The invention consists of replacing the non-reusable cardboard or plastic bags that are used to feed the boilers or pellet stoves with high-capacity reusable cardboard containers, linked to pallets, which allow offering a supply, collection and replacement service. of the devices, with a great load capacity and stability in transport. In addition, they allow both the manual supply of pellets and the linking of the device to an automatic pneumatic feeding system, resulting in a much more ecological, comfortable and reliable system. The complete recycling of the containers is also ensured in the event that they are in poor condition, and the emissions and repercussion of the carbon footprint are minimized by 7 times, in terms of their equivalent in plastic bags. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Device for feeding boilers and stoves using pellets

TECHNIQUE SECTOR

The present invention refers to a device for feeding boilers and stoves with pellets, either manually or by means of an automatic suction system.

The object of the invention is to provide means that facilitate the storage, feeding and reloading of pellets, with the following benefits:

• Elimination of all types of packaging, be it plastic or paper bags, reducing Greenhouse Gases by more than 7 times due to the elimination of all types of waste and the use, reuse and recycling of the packaging.

• Improvement in the customer's quality of life, since the customer's handling of loads and weights to fill the equipment no longer depends on the type of packaging, but rather on his decision as to how far he fills the cauldron that he will use as an intermediate element between the device and the boiler or stove.

• It allows offering a collection and replacement service for empty containers with full ones, so that they can be returned to the plant for reuse.

• The transport of the containers in trucks or paletería services, ensures a correct stability and elimination of the problems derived from the breakage of bags in the transport of pallets of plastic and/or paper bags, which all manufacturers suffer. It also eliminates the serious transport, handling and storage problem of the usual 1000kg Big_Bags.

• Possibility of application in installations of automatic feeding of boilers and stoves for clients who do not have space or possibility to install a silo of dimensions whose periodic refilling is economically viable due to its size, being able to use any pneumatic equipment on the market.

BACKGROUND OF THE INVENTION

In the field of practical application of the invention, when feeding boilers or stoves with pellets, these are usually supplied in bags, sacks or non-reusable containers that pose a variety of problems, among which the following aspects should be highlighted:

• As they are non-reusable containers, they represent waste that negatively affects the environment, increasing the generation of Greenhouse Gases.

• The bag or container must be handled manually to load the boiler or stove, with the consequent discomfort or risk of injury due to its high weight (the most common packaging on the market is 15kg plastic bags).

• During the transport of this type of packaging (pallets of 15kg sacks) it is common for them to present problems of breakage, scratches, incorrect sealing of sacks, loss of verticality of the pallet due to truck braking and serious unloading, etc. In addition, the existing packaging on the market such as "Big-Bag" (+/-1000kg) generates greater stability, handling and storage problems, since its walls are not rigid.

• This problem also affects when unloading this type of packaging, posing a serious safety problem to avoid breaking the handles (Big-Bags), or overturning them when picking them up with the forklift or pallet truck that unloads them from the truck. for having asked for verticality (pallets of sacks and Big-Bags).

• At the same time, there are hoppers or tanks for storing this type of fuel associated with pneumatic equipment that feeds the boilers or stoves through piping circuits, so that the periodic filling of these hoppers (silos) through a filling service through pneumatic trucks. The repercussion of transporting the supply by pneumatic truck depends on the Tm downloaded. Silos of less than 5-6Tm (8-10m3) represent a cost increase of more than 50-80% in transport. In such situations, either pallets of pellet bags are supplied, or it is more profitable to resort to other heat generation systems. There are also many problems in installations due to access by large vehicles, given that pneumatic pellet supply trucks usually have a minimum load capacity of 10-12Tm, which means a TARE of at least 25Tm and a large volume of vehicle per vehicle. the bodywork. The meters of hose are also usually limited, because the more discharge pressure, the more the pellet is undone along the way.

EXPLANATION OF THE INVENTION

The device for feeding boilers and stoves using pellets that the invention fully satisfactorily resolves the previously exposed problem based on a highly effective solution.

For this, and more specifically, the device of the invention is embodied in a rectangular prismatic cardboard box, open at the top and linked to a pallet through its base, which significantly facilitates storage, transport and implantation maneuvers. in the place in question, a box that is intended to receive within it a considerable volume of pellets, of the order of 1Tm, finished off at the top by the corresponding closing lid.

To extract the pellets, it has been planned that the box has a window assisted by a gate, arranged on one of its sides, close to the bottom, slightly raised with respect to it to define a space in the bottom on which it can be stored. accumulate the sawdust released by the pellets, a gate that defines a means of controlled extraction of the desired volume of pellets manually, so that they can be poured into a cauldron or similar element through which manually feed the stove or boiler without the need for having to apply high physical efforts, as happens in the case of having to handle heavy bags.

From this structuring, the use of disposable containers is avoided, be they bags of plastic or paper, making it possible to offer a service to collect and replace empty containers with full ones, so that the former are taken to the plant for refilling, which reduces the generation of greenhouse gases, which are so harmful to the environment. planet, specifically a reduction of the carbon footprint of the order of 7 times compared to the Tm in plastic bag pallet.

For its part, the transport of the devices in trucks or pallet services ensures correct stability and elimination of the problems derived from bag breakage in the transport of pallets of plastic and/or paper bags, which all manufacturers suffer. . In addition, they are calculated to allow their storage at a minimum of 2 heights, being able to support another device of the same type on top.

According to a variant embodiment of the invention, it has been provided that the container of the invention can be adapted to pneumatic feeding systems, used in some types of existing boilers and stoves, for customers who do not have space or the possibility of installing a silo. of acceptable dimensions that make its periodic filling economically viable, or for those who have tired of manually feeding the equipment.

In this type of system, a pellet suction-impulsion motor participates that can be adapted to any boiler, stove or hydro-stove, with hoses, usually 50mm.

Well then, in order for the device of the invention to be adaptable to this type of feeding system, it has been provided that the outlet window for the pellets, in this case devoid of the aforementioned gate, is arranged at the bottom of the box. through which the connection tubes of a suction probe stick out. A double bottom is established in said box, through a cardboard cover, vertical alignment grids and a closing tray. In the central part of the false bottom is the suction probe without upper cover so that it can suck the pellets that we place inside the box. Two connection tubes come out of the probe to the outer perimeter of the box, where the air intake and return hoses of the equipment that transports the pellets from the box to the stove, hydro-stove or boiler are connected.

In order to facilitate the assembly of this collection hopper, the spacers and the double bottom, given the large dimensions of the box, it has been planned that it present a folding rectangular sector in correspondence with its mouth that allows it to be folded and reduce the access height at the bottom of the box, a sector that in a normal situation of use of the device will remain coplanar with the wall in which it participates, becoming a totally inoperative element, perfectly stabilized by the closing cover of the device and an internal plate that will carry out the internal closing function by the pressure of the product.

In this way, the device can be easily connected and disconnected from the pneumatic pellet feeding system by coupling the two hoses or flexible tubes to the tubes located in correspondence with the window provided on the bottom of the container.

DESCRIPTION OF THE DRAWINGS

To complement the description that is going to be made below and in order to help a better understanding of the characteristics of the invention, according to a preferred example of its practical embodiment, a set of drawings is attached as an integral part of said description. where, with an illustrative and non-limiting nature, the following has been represented:

Figure 1.- Shows a plan and exploded view of the different elements that participate in a device for feeding boilers and stoves with pellets made in accordance with the object of the present invention, according to a first embodiment variant simplest practice, in which the device is manually fed.

Figure 2.- Shows a perspective view of the device of figure 1 duly assembled.

Figure 3.- Shows a view similar to that of figure 1, but corresponding to a variant practical embodiment of the invention in which the device is intended for implanted in an automatic pneumatic feeding system associated with a boiler or stove.

Figure 4.- Shows a perspective view of the device of figure 3 duly assembled.

Figure 5.- Finally, it shows a perspective detail of the bottom of the container of figures 3 and 4 on which a double bottom is mounted by means of spacers to receive the hopper that is connected to the suction system provided for this second variant. of realization of the invention.

PREFERRED EMBODIMENT OF THE INVENTION

In view of the figures outlined and especially figures 1 and 2, it can be seen how the device for feeding boilers and stoves with pellets is constituted from the development of a cardboard sheet in which folding lines are defined. and stamping that define a rectangular prismatic container open at the top, in which two larger side faces (1), two smaller side faces (2) participate, as well as lower flanges (3) determining the bottom of the container, side faces that are linked to through a side tab (4), while the bottom determined by the lower tabs (3) is linked to a pallet (5) with plan dimensions consistent with the dimensions of the box.

Said box, intended to be filled with one metric ton of pellets, is finished off at the top with a lid (6) also made of cardboard.

In order to manually extract the pellets, a window (7) is established on one of the smaller side faces (2) to which a gate mechanism (8) is linked, this assembly being slightly raised with respect to the bottom of the box, for example about 15 centimeters, in order to define a space at the bottom on which the sawdust released by the pellets accumulates.

In a second embodiment variant, the one shown in figures 3 to 5, provision has been made for that the device can be easily linked and unlinked to a pneumatic feeding system, of the type used in some types of existing boilers and stoves, for customers who do not have space or possibility to install a silo of acceptable dimensions that can be economically filled periodically viable.

To do this, the pellet outlet window (7') is arranged at the bottom of the box, defining a double bottom for said box, through a plate (9) acting as a double bottom and some separators (10). -11) those shown in detail in figure 5, on which the plate (9) will rest, internally defining a corridor (12) for the passage of the suction and blowing tubes as well as for a hopper (13) that rests on a cardboard support (14) and whose upper mouth coincides with a notch (15) provided in the central area of the plate (9), hopper (13) that opens into a suction conduit (16) that protrudes through the Said window (7') of the container, through which the pellets are extracted by suction, and which is complemented by a second air return tube (17), tubes to which the two tubes of the automatic pneumatic feeding system are connected. .

Finally, it only remains to point out that, to facilitate the assembly of the hopper (13), the spacers (10-11), and the plate (9) constituting the false bottom inside the container, given the large dimensions of the box, It has been foreseen that this presents in correspondence with its mouth a collapsible rectangular sector (18) that allows its folding and reduces the height of access to the bottom of the box, sector that, as has been said previously, in normal situation of use of the device it will remain coplanar with the wall in which it participates, becoming a totally inoperative element, perfectly stabilized by the closing cover of the device.

Claims (4)

1a.- Device for feeding boilers and stoves with pellets, characterized in that it is made from a rectangular prismatic cardboard container, with an open upper mouth for filling it with pellets, cardboard container that is linked through from its lower base to a pallet, of dimensions in accordance with the dimensions of the bottom of the container, while its upper mouth is closed through a lid (6), having provided that a window is available on one of the sides of the container ( 7-7') to release the pellets. 2.- Device for feeding boilers and stoves with pellets, according to claim 1, characterized in that a gate mechanism (8) is established in correspondence with the window (7), this set being slightly raised with respect to the bottom from the box. 3.- Device for feeding boilers and stoves using pellets, according to claim 1, characterized in that the device can be connected and disconnected to a pneumatic feeding system for boilers or stoves, having provided that the window (7') outlet of the pellets is arranged at the bottom of the box, defining a double bottom for said box, through a plate (9) acting as a double bottom and some separators (10-11) on which the plate rests (9), defining between the two bottoms a corridor (12) for the passage of the suction and blowing tubes as well as for a hopper (13) that rests on a cardboard support (14) and whose upper mouth coincides with a notch ( 15) provided in the central area of the plate (9), a hopper (13) that opens into a suction conduit (16) that protrudes through the window (7') of the container, through which it is extracted by suction pellets, and which is complemented by a second air return pipe (17). 4.- Device for feeding boilers and stoves using pellets, according to claims 1 and 3, characterized in that in correspondence with its mouth it includes a folding rectangular sector (18) to facilitate access to the interior of the container in its assembly.