WO2009115621A1

WO2009115621A1 - System for supplying an atomised product in facilities used to produce porcelain parts

Info

Publication number: WO2009115621A1
Application number: PCT/ES2008/000157
Authority: WO
Inventors: Francisco José FERRÓN GÓMEZ
Original assignee: Segorbe Porcelanico, S.A.
Priority date: 2008-03-19
Filing date: 2008-03-19
Publication date: 2009-09-24

Abstract

The invention relates to a system for supplying an atomised product in facilities used to produce porcelain parts. In said facilities, the atomised product, which is obtained from raw material using suitable treatments, is stored in silos (1) and the silos, or the product contained in each, are subsequently conveyed on conveyor belts to a discharge area in which they are discharged onto the corresponding presses used to obtain the corresponding porcelain parts. The system includes an automatic elevator or travelling crane (2) for the aerial conveyance of the silos (1) housing the atomised product so that the outlet port or duct (4) of the silo (1) can be coupled to one of the discharge ports (3) provided in a floor, a second silo (5) being positioned thereunder in order to receive the atomised product and to supply the corresponding press used to produce the porcelain part, thereby dispensing with the need for belts to convey the product from the silo(s) (1) to the discharge area and from the discharge area(s) to the production presses.

Description

SlSTEAAA PRODUCT INCREASE ATOMIZED IN PORCELAIN PARTS MANUFACTURING FACILITIES

D E S C R I P C I Ó N

OBJECT OF THE INVENTION

The present invention relates to an atomized product feeding system in ceramic parts manufacturing facilities, and more specifically to an automated product or material contribution system to each of the presses on which the Ia is carried out. manufacture of porcelain pieces, contribution of material that is made in individual silos transported by air.

The object of the invention is to increase the performance of the ceramic parts manufacturing facilities, as well as partially reduce the complexity of this type of installation.

BACKGROUND OF THE INVENTION

In the manufacture of porcelain pieces, and more specifically in the storage and handling of atomized products, there are currently two very specific systems, one of them consisting of storing the atomized product in fixed silos installations, with a large amount of investment in metallic structures and civil works that can reach capacities of more than 300 MT per silo.

While the second system consists of storing the atomized product in mobile silos, with a much more limited capacity, between 3 and 10 MT, which are moved at ground level by automatic vehicles or traditional transport system. This second system has the clear advantage of its mobility, less investment and flexibility, but the inconvenience of being able to store smaller Quantities of raw material, or if you can make it occupy huge work surfaces.

There are also a mixed work modalities, where the consumption of the majority products is stored in fixed silos and the rest in mobile silos, with the particularity that in both cases the product atomized and stored for use at the beginning of the production chain ceramic, must be transformed into its physical dimensions, crushed or agglomerated, with the corresponding mixing and ultimately dosed in the precise quantities.

To perform these operations there are unitary processes, perfectly studied in ceramic technology, whose names meet the type of product they generate: micronization, agglomeration, dry compaction, etc., and for all of them there are standard facilities.

The arrangement of the corresponding machines can be of two forms, so that the majority of those available at present, and for each press in which the fabrication of the porcelain piece is made, what is commonly known as the "tower" is adapted technological "that consist of an installation that has several floors and in which the atomized product that has arrived by means of a conveyor is descending, goes through different processes referred to previously (dosing, mixing, micronizing, agglomerate, etc.) ), so that depending on the fantasy of the producer and the investment made, installations capable of mixing, premixing and reprocessing the product can be made as it advances in the chain, always unidirectional, from the simplest of three heights, with a reception-dosing floor, another process and another for use in the press, up to authentic "Torres de Babel", up to seven heights and several hundred square meters of occupation. Obviously, by their nature, these facilities are even the simplest, expensive in investment, since they require a tower for each press. Pαrα to make a model change must proceed to its integral cleaning, discarding all the material that has been in transit, so that the flexibility in production at the time of changing the model is seriously damaged.

On the other hand, the control systems in each of these facilities are extremely complicated, being equally worthy of highlighting the fact of their low productive performance.

Another way of carrying out this task is described in Spanish Patent P 9700806 referring to an installation for storage and use of bulk materials, based on installing several different production units, that is to say several presses, and feeding them by unit dosing stations by means of tapes, so that the material thus produced was reloaded in mobile silos and could be moved to another station.

Although in principle this idea seems to solve the problem of the flow of material, since with the exception of the last stage of presses, it could return in silos to the warehouse and then be used that same product in another press, however it generates other types of problems that have prevented its implementation as such, in any installation.

In the first place, a dosing station that feeds the atomized product must be associated for each press, so that to change the product it is necessary to change color silos, with the productive decrease that this entails, under penalty of installing for each Press a macro mixer installation, which greatly increases the investment.

Likewise, although initially the flow of material or product becomes bidirectional, the remains that occur in each of the presses are hardly resolved by this system. Another very important drawback is that the mobile silos system, due to its particular way of moving with automatic vehicles at ground level, particularly slow, requires silos of an average capacity over 8 MT, size that makes transportation impossible, for example, micronized whose tendency to caking requires much smaller containers and special geometry.

Finally, the last problem presented by the system developed in this Patent of Invention is that it is necessary, as in the case of the technological tower, a large number of transport belts, bucket elevators, and other transport systems that complicate enormously, the installation increases the investment and pollutes the environment with dust, therefore requiring expensive air purification facilities.

DESCRIPTION OF THE INVENTION

The system that has been recommended has been designed to solve the problem described above, based on a simple solution but of great efficiency, since it is based on the contribution of material or product atomized to each of the manufacturing presses, is made in individual silos transported by air, using a movable crane bridge both in the longitudinal direction, in the transverse direction and in the direction of elevation and descent, which makes it possible to transport the individual container silos from anywhere and to any point, allowing that the individual containers or silos themselves can be placed on discharge mouths located in a certain floor, under which, in another lower floor, the silos through which they are unloaded directly onto the manufacturing presses, without the need for an element of transport, avoiding dust, etc.

In this sense, the system will have one or more crane bridges, specially designed to collect or deposit silos or containers of different size and shape, the latter being able to adjust to different Weights, with the limit of what technology can transport at high altitude, and with different geometric shapes, to adjust to the different types of products to be transported.

It should also be said that in correspondence with the discharge mouths established for loading the silos located at a lower level and facing the corresponding presses, both a discharge sensor and an air intake are included to prevent the vacuum from being made and Do not drop the material that contains the silo, so that the sensor will warn if there is any anomaly in the discharge, while the air intake can be complemented with a particulate filter to prevent dust from escaping.

Likewise, there are provided, next to the discharge mouths, presence sensors that indicate to the system about the correct placement of the silos in their discharge position, with the particularity that the feeding silos, that is, those located at lower level of the discharge mouths referred to above, and that feed the manufacturing presses of the porcelain pieces, include a laterally located sensor that warns of when they need replacement, so that the emptying of these silos towards the manufacturing presses of the parts Porcelain, is made by tubes that carry its contents from the discharge mouth of that silo to the press in question, in the proportion necessary to manufacture the desired piece at any time.

Finally, to say that the crane bridge, in addition to the movements in the three X and Z axes, is also equipped with a rotating movement to be able to position the corresponding silo in the most convenient way, both on the press and on the ground level.

The advantages that can be cited based on the novelties of the invention are numerous, the most important being the following: The flow of the atomized material becomes authentically bi-directional, and both the remaining product and the resulting product are deposited in silos that can be collected and stored by the crane-bridge or automatic lift.

The speed of the process increases markedly since once the bridge crane is in transport level (high position), it has no impediment to its displacement, but not at ground level that would have to overcome silos deposited in productive facilities as it happens conventionally.

The generation of dust is limited to that strictly necessary in each individual process, that is to say properly inside the facilities, and even these can be shortened since the final destination will be a transportable silo, so that from the point of view of environmental dust cleaning, this is very important against the high dust generated by the presence of conventionally used tapes.

Reduction of costs since investments are minimized when the complexity of conventional installations is reduced, being able to easily change the product and simply cleaning the machine to produce another product or material.

Greater simplicity of the installation compared to conventional ones, having to control much less work points.

By virtue of the air transport that is achieved through the bridge-crane or automatic lift object of the invention, the percentage of useful land increases up to 80% compared to 20% achieved with mobile land systems Virtually used.

Finally, a very important advantage of the system with the improvement of the invention, is its flexibility, not being linked to huge facilities, or especially civil works, so that any novelty that the future holds, both in preparation of powders and in the final use, it will be easily contemplated by the lifting system that constitutes the bridge crane, provided that it is within its fixed working limits, so that in the face of modifications that must be made in conventional technological towers before future developments, with the system of the invention is enough to type the new discharge position in its three coordinates X, Y, Z.

DESCRIPTION OF THE DRAWINGS

To complement the description that will then be made and in order to help a better understanding of the features of the invention, according to a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description. where, for the purposes of illustration and not limitation, the following has been represented:

Figure 1 shows a representation according to a general perspective of what is the bridge-crane or automatic lift that constitutes the fundamental novelty of the system of the invention.

Figure 2.- Shows a perspective view of a plant with several discharge mouths, in one of which the outlet of a silo or container of atomized product is coupled, allowing the crane bridge to be seen in a further background or automatic elevator represented in the previous figure. Figure 3 shows, finally, a bottom perspective view of the storage silo of the atomized product, which is loaded with the product from the silo represented in Figure 2, so that from said storage silo the product is emptied into The press for manufacturing porcelain pieces, through appropriate ducts

PREFERRED EMBODIMENT OF THE INVENTION

In view of the aforementioned figures, it can be seen how the feed system of the atomized product in facilities for manufacturing porcelain pieces, is based on the silos (1) in which the atomized product is stored, once mixed, treated, etc., are moved by a bridge crane (2) movable both longitudinally and transversely, so that said bridge crane (2), which constitutes an automatic elevator, can take a silo (1) and place opposite in relation to one of the discharge mouths (3) established in a particular plant or level of the installation, so that the mouth or outlet duct (4) of the silo (1) is coupled over

The corresponding discharge mouth (3) and unload the atomized product in an internally located silo (5), that is to say in a lower floor than the one in which the discharge mouths (3) are located, whose silo (5) constitutes the container of storage of the product for later downloading in the press to make or manufacture the corresponding porcelain piece, feed silo (5) that is complemented with a sensor (6) indicator of the level of product contained in it, to warn that it is It is necessary to replenish material or product in it.

Therefore, by means of the automatic lift or bridge crane (2), it can take from the corresponding storage place, a silo (1) and transport it aerially to couple it to the corresponding discharge mouth (3) and unload it to the silo corresponding storage (5), thereby avoiding ground level α ααααααα, with the drawbacks that this entails as traditionally occurs.

The discharge mouths (3) have discharge sensors (7), silo presence sensors (1) and air intakes equipped with a particulate filter to prevent dust from escaping.

Obviously, the crane bridge or automatic lift (2) will have displacement guides both in a transverse and horizontal direction, and of course in an ascending-descending direction to perform the movements in the three Cartesian axes, also counting in its lower part with (2 ') adaptable to the upper part of the silos (1) to be fastened for the transfer of these from one place to another.

On the other hand, the storage silo (5) internally presents a kind of tray (5 ') from which ducts are projected for the discharge of the atomized product on the corresponding manufacturing press of the porcelain piece.

Claims

R E I V I N D I C A C I O N E S

I ^to .- Feeding System atomized product in manufacturing facilities porcelain pieces, that being provided for use in that type of facility in which is carried out the preparation of products atomized by which porcelain pieces are manufactured in corresponding presses, and whose atomized products are stored in silos (1), from which the product has to be transported to a place of unloading on the corresponding manufacturing presses, characterized in that it includes an automatic elevator constituted by a crane bridge (2) with means (2 ') for securing a silo (1) container of atomized product, for the air transfer of the silo from the place of storage of the same until it is coupled on one of the discharge mouths (3) established in a floor or level of The installation, whose discharge mouths (3) flow into a feed silo (5) of the product towards the corresponding manufacturing press of I a porcelain piece.

2 .- Feeding System atomized product in manufacturing facilities porcelain pieces, according to claim

I ^a , characterized in that the automatic lift or crane-bridge (2) is associated with guiding means for both transverse and longitudinal and ascending-descending displacement thereof, counting in its lower part with means (2 ¹ ) for the adaptation to The upper part of the silo (1) and allow its air transfer to the corresponding discharge mouth (3).

3 .- Feeding System atomized product in manufacturing facilities porcelain pieces, according to previous claims, characterized in that the bridge crane (2) is authorized to perform a rotational movement about its own axis, facilitating the correct positioning of the silos , both in the press and at ground level.

4 .- feeding system atomised product ¡Nstαlαciones of manufacture of porcelain pieces, according to previous claims, characterized in that the discharge mouths (3) are associated with discharge sensors (7), also including a silo presence sensor (1) and an air intake with filter particles to prevent dust from coming out.

5 .- Feeding System atomized product in manufacturing facilities porcelain pieces, according to previous claims, characterized in that the feed silo (5) has a sensor (6) indicator of product contained therein, determining a warning element indicating the need to replace the product stored inside said feed silo (5).