EP0990707A2 - Process for the controlled dosing of products in a drum - Google Patents

Process for the controlled dosing of products in a drum Download PDF

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Publication number
EP0990707A2
EP0990707A2 EP99118917A EP99118917A EP0990707A2 EP 0990707 A2 EP0990707 A2 EP 0990707A2 EP 99118917 A EP99118917 A EP 99118917A EP 99118917 A EP99118917 A EP 99118917A EP 0990707 A2 EP0990707 A2 EP 0990707A2
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Prior art keywords
barrel
air
water
chemicals
way valves
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EP99118917A
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German (de)
French (fr)
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EP0990707B1 (en
EP0990707A3 (en
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Ruggero Galiotto
Beniamino Remonato
Giancarlo Remonato
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Erretre SpA
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Erretre Srl
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    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B3/00—Milling leather

Definitions

  • the invention relates to a method for controlling the dosage of products in a barrel. It relates more particularly to a process for controlling the dosing cycle chemicals, air and water, in a fulling, tanning and dyeing.
  • each barrel consists essentially of three circuits the air circuit, which is circulated in the barrel, the product circuit additional chemicals, which contribute to improving the fulling operation of the skins and the water circuit, which maintains the right degree of humidity inside the barrel itself.
  • Each barrel is therefore equipped with pumps, spray nozzles, pressure tanks and other devices interposed in said circuits to perform the dosage of the products by way of example, the barrel described in the application for Patent VI98A000107 dated 27.05.98 from the same plaintiff.
  • the aim of the present invention is to provide a method of the type described above, which operates completely automatically and which includes fixed work phases, combined with programmable work phases depending on the type of skin to be treated.
  • barrel 1 turns around its axis and the air is circulated in its internal volume by the fan 2, after it has been heated to the correct temperature by the heating coil 3, by the adjustment of the two thermostats 4.1 and 4.2.
  • the relative humidity sensor 5 finds that the air inside the barrel is too dry, it controls the opening of motorized three-way valves, 6, 7 and 8 in a first position 1-3, so as to allow the entry of pressurized water which is sprayed in mist by at least one of the nozzles 9A or 9B.
  • the chemical dosing phase is selected on the table control 10, and this involves the interruption of air circulation, for example, at the following the stopping of the fan and / or the exclusion of the heating coil 3, as well as the shut off the water supply by rotating the three-way valve 7 in a second position 2-3, and the three-way valve 8 in the passage position 3-1-2, for allow the chemicals 11 contained in the tank 12 to be sprayed inside the barrel by the action of the pump 13 activated by the probe 14 which reveals the presence of the product in the tank.
  • an electrical control monitors the state of the barrel so that, during the rotation phase of the latter, the chemical dosing operation is initiated while on the contrary, when the barrel is stopped, or under the effect of the inversion the direction of rotation of this barrel, said dosing is immediately blocked, to resume then return to the state of rotation of the barrel in the initial direction.
  • the two three-way valves 6 and 7 respectively take the position 2-3 and position 1-3 during the dosing stop phase, thereby switching on the nozzles 9 quick discharge.
  • the two three-way valves 6 and 7 determine a forced decrease in the pressure at inside the product circuit, which avoids the eventual dripping of product by nozzles and, therefore, the possibility of staining the skins irreparably.
  • the installation returns automatically, immediately or timed under normal operating conditions, with the resumption of air circulation and with three-way valves 6, 7 and 8 positioned so as to allow the entry of water when the humidity controller or relative humidity sensor 5 indicates a the humidity of the air circulating in the barrel is too low.
  • the method according to the invention involves a metering system for adjusting the humidity value by a step-by-step process and with discharge of the residual pressure, a diagnostic system with remote alarm during operation and a system self-diagnosis which precedes the start-up of the entire installation.
  • the water dosing system used to adjust the humidity value of the air contained in the barrel provides for the use, in the air circuit, of a four-way valve channels 15 and two timers 16 and 17, on the control panel 10.
  • the four-way valve 15 moves from the position 1-2, 3-4, of normal passage, in position 1-3, 2-4 so that a recycling-renewal, that is to say that the air coming from the barrel is expelled and replaced in the circuit by fresh air taken from the external environment and possibly also previously cooled by a specially designed refrigeration unit.
  • the water is sprayed through the nozzle 9A in a cyclic manner, that is to say by alternating active phases and rest periods, until the desired humidity level is reached, and the duration of these phases is suitably set by means of the two timers 16 and 17.
  • the three-way valve track 6 is in position 2-3, so that the nozzle is in a discharge situation, while, during the following period, of a duration established by the timer of spraying 17, said valve is always placed in position 1-3, so that the circuit is traversed by pressurized water sprayed in mist by said nozzle.
  • This working mode has the advantage of being able to program between a dosage and the next, a certain period of time during which the humidity sensor 5 succeeds in measure the actual value of the relative humidity inside the barrel, which is not never constant since the absorption of water by the air occurs very slowly and absolutely unpredictable, depending on multiple factors the first of which is the skin type to work.
  • the diagnostic system with remote alarm makes it possible to control the machine operation by continuously monitoring the condition of the thermal protections electrical consumers, the presence of electrical and hydraulic power, pneumatic and all other vital functions, all without stopping the machine, and, in in the event of anomalies, activate a remote alarm such as an audible, optical or a telephone handset that alerts the operator responsible, even when the operator is not directly present at the installation but is for example at home.
  • a remote alarm such as an audible, optical or a telephone handset that alerts the operator responsible, even when the operator is not directly present at the installation but is for example at home.
  • This system is advantageous, considering the great economic value of working skins which, in the event of anomalies or barrel stopping, would irremediably damaged and, if we also consider that, in the tanneries, the time of work is continuous, therefore also nocturnal and fully automated, with a reduction or lack of staff.
  • the self-diagnosis system which operates before the machine is started has function to invalidate this start-up as long as the working parameters and the safety positions have not been checked, via an electronic circuit, in immediately identifying any causes of malfunction.

Abstract

The conditions inside a leather tanning drum (1) are controlled and adjusted automatically. Air is circulated (2) through the vessel and its temperature monitored (4.1 and 4.2) and heated (3). Humidity is monitored (5) and water sprayed if necessary. Chemical products (11) are dosed at the appropriate time in the cycle by spraying into the drum.

Description

L'invention concerne un procédé de contrôle du dosage de produits dans un tonneau. Elle vise plus particulièrement un procédé pour le contrôle du cycle de dosage des produits chimiques, de l'air et de l'eau, dans un tonneau de foulonnage, tannage et teinture.The invention relates to a method for controlling the dosage of products in a barrel. It relates more particularly to a process for controlling the dosing cycle chemicals, air and water, in a fulling, tanning and dyeing.

Dans le domaine du tannage, on connaít bien les tonneaux de foulonnage, teinture et tannage, c'est-à-dire des machines aptes à assouplir, à teindre et tanner les peaux.In the field of tanning, we know the fulling barrels, dyeing and tanning, that is to say machines capable of softening, dyeing and tanning hides.

L'installation qui alimente chaque tonneau est constituée essentiellement par trois circuits le circuit de l'air, qu'on fait circuler dans le tonneau, le circuit des produits chimiques additionnels, qui concourent à améliorer l'opération de foulonnage des peaux et le circuit de l'eau, qui pourvoit à maintenir le juste degré d'humidité à l'intérieur du tonneau lui même.The installation that feeds each barrel consists essentially of three circuits the air circuit, which is circulated in the barrel, the product circuit additional chemicals, which contribute to improving the fulling operation of the skins and the water circuit, which maintains the right degree of humidity inside the barrel itself.

Chaque tonneau est donc pour cela muni de pompes, de buses de pulvérisation, de réservoirs sous pression et d'autres appareils intercalés dans lesdits circuits pour effectuer le dosage des produits à titre d'exemple, on cite le tonneau décrit dans la demande de brevet VI98A000107 du 27.05.98 de la même demanderesse.Each barrel is therefore equipped with pumps, spray nozzles, pressure tanks and other devices interposed in said circuits to perform the dosage of the products by way of example, the barrel described in the application for Patent VI98A000107 dated 27.05.98 from the same plaintiff.

Dans l'état actuel de la technique, le dosage des produits s'effectue manuellement et selon une méthodologie qui dépend essentiellement de l'expérience et de l'habilité de l'opérateur, ce qui apporte quelquefois des résultats de travail insatisfaisants et une qualité insuffisante des peaux traitées, lesquelles doivent être éliminées avec d'évidents dommages économiques et de production.In the current state of the art, the dosing of the products is carried out manually and according to a methodology which essentially depends on the experience and skill of the operator, which sometimes brings unsatisfactory work results and quality insufficient treated skin, which must be removed with evidence economic and production damage.

Le but de la présente invention est de prévoir un procédé du type décrit ci-dessus, qui opère totalement de façon automatique et qui comprenne des phases de travail fixes, combinées à des phases de travail programmables en fonction du type de peaux à traiter. The aim of the present invention is to provide a method of the type described above, which operates completely automatically and which includes fixed work phases, combined with programmable work phases depending on the type of skin to be treated.

Ceci est réalisé conformément aux caractéristiques de la partie caractérisante de la revendication 1.This is done in accordance with the characteristics of the characterizing part of the claim 1.

Des formes de réalisation avantageuses font l'objet des sous-revendications.Advantageous embodiments are the subject of the subclaims.

Le procédé sera maintenant décrit ci-après dans ses diverses phases, à titre d'exemple illustratif et non limitatif, à l'aide des planches de dessins annexés où:

  • la Fig. 1 (planche I) représente le schéma de fonctionnement pendant la phase de dosage des produits chimiques;
  • la Fig. 2 (planche II) représente le schéma de fonctionnement pendant la phase de dosage de l'eau pour le réglage du degré d'humidité relative;
  • la Fig. 3 (planche III) représente un schéma de déroulement de l'opération de dosage des produits chimiques.
    • The process will now be described below in its various phases, by way of illustrative and nonlimiting example, using the plates of attached drawings in which:
  • Fig. 1 (Plate I) represents the operating diagram during the dosing phase of the chemicals;
  • Fig. 2 (Plate II) represents the operating diagram during the water metering phase for adjusting the degree of relative humidity;
  • Fig. 3 (Plate III) represents a flow diagram of the operation for dosing the chemicals.

    • Pendant l'action normale de foulonnage, tannage et teinture, le tonneau 1 tourne autour de son axe et l'air est mis en circulation dans son volume intérieur par le ventilateur 2, après qu'il a été chauffé à la bonne température par la batterie de chauffage 3, par le réglage des deux thermostats 4.1 et 4.2.During the normal fulling, tanning and dyeing action, barrel 1 turns around its axis and the air is circulated in its internal volume by the fan 2, after it has been heated to the correct temperature by the heating coil 3, by the adjustment of the two thermostats 4.1 and 4.2.

    Lorsque le capteur d'humidité relative 5 constate que l'air à l'intérieur du tonneau est trop sec, il commande l'ouverture des vannes motorisées à trois voies, 6, 7 et 8 dans une première position 1-3, de manière à permettre l'entrée de l'eau sous pression qui est pulvérisée en brouillard par au moins une des buses 9A ou 9B.When the relative humidity sensor 5 finds that the air inside the barrel is too dry, it controls the opening of motorized three-way valves, 6, 7 and 8 in a first position 1-3, so as to allow the entry of pressurized water which is sprayed in mist by at least one of the nozzles 9A or 9B.

    La phase de dosage des produits chimiques est sélectionnée sur le tableau de commande 10, et ceci comporte l'interruption de la circulation de l'air, par exemple, à la suite de l'arrêt du ventilateur et/ou de l'exclusion de la batterie de chauffage 3, ainsi que la fermeture de l'alimentation de l'eau par la rotation de la vanne à trois voies 7 dans une seconde position 2-3, et de la vanne à trois voies 8 dans la position de passage 3-1-2, pour permettre que les produits chimiques 11, contenus dans le réservoir 12, soient pulvérisés à l'intérieur du tonneau par l'action de la pompe 13 activée par la sonde 14 qui révèle la présence du produit dans le réservoir.The chemical dosing phase is selected on the table control 10, and this involves the interruption of air circulation, for example, at the following the stopping of the fan and / or the exclusion of the heating coil 3, as well as the shut off the water supply by rotating the three-way valve 7 in a second position 2-3, and the three-way valve 8 in the passage position 3-1-2, for allow the chemicals 11 contained in the tank 12 to be sprayed inside the barrel by the action of the pump 13 activated by the probe 14 which reveals the presence of the product in the tank.

    En même temps, un contrôle électrique surveille l'état du tonneau de manière que, pendant la phase de rotation de ce dernier, l'opération de dosage des produits chimiques soit initiée tandis qu'au contraire, lorsque le tonneau est arrêté, ou sous l'effet de l'inversion du sens de rotation de ce tonneau, ledit dosage est immédiatement bloqué, pour reprendre ensuite au retour de l'état de rotation du tonneau dans le sens initial.At the same time, an electrical control monitors the state of the barrel so that, during the rotation phase of the latter, the chemical dosing operation is initiated while on the contrary, when the barrel is stopped, or under the effect of the inversion the direction of rotation of this barrel, said dosing is immediately blocked, to resume then return to the state of rotation of the barrel in the initial direction.

    En service, les deux vannes à trois voies 6 et 7 prennent respectivement la position 2-3 et la position 1-3 pendant la phase d'arrêt du dosage, en mettant ainsi les buses 9 en décharge rapide. Elles déterminent par ce moyen une diminution forcée de la pression à l'intérieur du circuit de produit, ce qui évite l'éventuelle coulée de gouttes du produit par les buses et, par conséquent, la possibilité de tacher les peaux de façon irréparable.In service, the two three-way valves 6 and 7 respectively take the position 2-3 and position 1-3 during the dosing stop phase, thereby switching on the nozzles 9 quick discharge. By this means they determine a forced decrease in the pressure at inside the product circuit, which avoids the eventual dripping of product by nozzles and, therefore, the possibility of staining the skins irreparably.

    Ensuite, lorsque la sonde 14 ne constate plus la présence de liquide dans le réservoir 12, l'installation revient automatiquement, de façon immédiate ou temporisée aux conditions normales de fonctionnement, avec la reprise de la circulation de l'air et avec les vannes à trois voies 6, 7 et 8 positionnées de manière à permettre l'entrée de l'eau lorsque l'appareil de maintien de l'humidité ou capteur d'humidité relative 5 indique une valeur trop basse de l'humidité de l'air qui circule dans le tonneau.Then, when the probe 14 no longer detects the presence of liquid in the tank 12, the installation returns automatically, immediately or timed under normal operating conditions, with the resumption of air circulation and with three-way valves 6, 7 and 8 positioned so as to allow the entry of water when the humidity controller or relative humidity sensor 5 indicates a the humidity of the air circulating in the barrel is too low.

    Le procédé selon l'invention fait intervenir un système de dosage pour régler la valeur de l'humidité par un procédé pas-à-pas et avec décharge de la pression résiduelle, un système de diagnostic avec alarme à distance pendant le fonctionnement et un système d'autodiagnostic qui précède la mise en marche de l'ensemble de l'installation. The method according to the invention involves a metering system for adjusting the humidity value by a step-by-step process and with discharge of the residual pressure, a diagnostic system with remote alarm during operation and a system self-diagnosis which precedes the start-up of the entire installation.

    En détail, le système de dosage de l'eau servant à régler la valeur de l'humidité de l'air contenue dans le tonneau prévoit l'emploi, dans le circuit de l'air, d'une vanne à quatre voies 15 et de deux temporisateurs 16 et 17, sur le tableau de commande 10.In detail, the water dosing system used to adjust the humidity value of the air contained in the barrel provides for the use, in the air circuit, of a four-way valve channels 15 and two timers 16 and 17, on the control panel 10.

    En fonctionnement, lorsque le capteur d'humidité relative 5 constate un degré d'humidité de l'air supérieur à celui établi, la vanne à quatre voies 15 se déplace de la position 1-2, 3-4, de passage normal, à la position 1-3, 2-4 de manière qu'il s'effectue un recyclage-renouvellement, c'est-à-dire que l'air provenant du tonneau soit expulsé et remplacé dans le circuit par de l'air neuf prélevé sur l'environnement extérieur et éventuellement aussi préalablement refroidi par un groupe frigorifique spécialement prévu.In operation, when the relative humidity sensor 5 finds a degree air humidity higher than established, the four-way valve 15 moves from the position 1-2, 3-4, of normal passage, in position 1-3, 2-4 so that a recycling-renewal, that is to say that the air coming from the barrel is expelled and replaced in the circuit by fresh air taken from the external environment and possibly also previously cooled by a specially designed refrigeration unit.

    Lorsqu'au contraire, il est nécessaire d'activer l'humidification, l'eau est pulvérisée à travers la buse 9A de façon cyclique, c'est-à-dire en alternant des phases actives et des phases de repos, jusqu'à ce qu'on ait atteint le degré d'humidité voulu, et la durée de ces phases est convenablement réglée au moyen des deux minuteurs 16 et 17.When on the contrary, it is necessary to activate humidification, the water is sprayed through the nozzle 9A in a cyclic manner, that is to say by alternating active phases and rest periods, until the desired humidity level is reached, and the duration of these phases is suitably set by means of the two timers 16 and 17.

    En pratique, pendant le temps fixé avec le minuteur d'arrêt 16, la vanne à trois voies 6 est dans la position 2-3, de sorte que la buse est dans une situation de décharge, tandis que, pendant la période suivante, d'une durée établie par le minuteur de pulvérisation 17, ladite vanne se place toujours dans la position 1-3, de sorte que le circuit est parcouru par l'eau sous pression pulvérisée en brouillard par ladite buse.In practice, during the time set with the stop timer 16, the three-way valve track 6 is in position 2-3, so that the nozzle is in a discharge situation, while, during the following period, of a duration established by the timer of spraying 17, said valve is always placed in position 1-3, so that the circuit is traversed by pressurized water sprayed in mist by said nozzle.

    Ce mode de travail a l'avantage de pouvoir programmer entre un dosage et le suivant, un certain intervalle de temps pendant lequel le capteur d'humidité 5 réussit à mesurer la valeur réelle de l'humidité relative à l'intérieur du tonneau, valeur qui n'est jamais constante puisque l'absorption de l'eau par l'air se produit très lentement et d'une façon absolument imprévisible, en fonction de multiples facteurs dont le premier est le type de peau à travailler. This working mode has the advantage of being able to program between a dosage and the next, a certain period of time during which the humidity sensor 5 succeeds in measure the actual value of the relative humidity inside the barrel, which is not never constant since the absorption of water by the air occurs very slowly and absolutely unpredictable, depending on multiple factors the first of which is the skin type to work.

    Le système de diagnostic avec alarme à distance permet de contrôler le fonctionnement de la machine en surveillant en continu l'état des protections thermiques des consommateurs électriques, la présence de l'alimentation électrique, hydraulique, pneumatique et toutes les autres fonctions vitales, le tout sans arrêter la machine, et, dans le cas d'anomalies, d'actionner une alarme à distance telle qu'un signal sonore, optique ou un combinateur téléphonique qui alerte l'opérateur responsable, même lorsque celui-ci n'est pas directement présent auprès de l'installation mais se trouve par exemple chez lui.The diagnostic system with remote alarm makes it possible to control the machine operation by continuously monitoring the condition of the thermal protections electrical consumers, the presence of electrical and hydraulic power, pneumatic and all other vital functions, all without stopping the machine, and, in in the event of anomalies, activate a remote alarm such as an audible, optical or a telephone handset that alerts the operator responsible, even when the operator is not directly present at the installation but is for example at home.

    Ce système est avantageux, si l'on considère la grande valeur économique des peaux à travailler qui, dans les cas d'anomalies ou d'arrêt du tonneau, seraient irrémédiablement abímées et, si l'on considère aussi que, dans les tanneries, le temps de travail est continu, donc également nocturne et totalement automatisé, avec une réduction ou absence de personnel.This system is advantageous, considering the great economic value of working skins which, in the event of anomalies or barrel stopping, would irremediably damaged and, if we also consider that, in the tanneries, the time of work is continuous, therefore also nocturnal and fully automated, with a reduction or lack of staff.

    Le système d'autodiagnostic qui opère avant la mise en marche de la machine a pour fonction d'invalider cette mise en marche tant que les paramètres de travail et la position de sécurité n'ont pas été contrôlés, par l'intermédiaire d'un circuit électronique, en identifiant immédiatement les éventuelles causes de défaut de fonctionnement.The self-diagnosis system which operates before the machine is started has function to invalidate this start-up as long as the working parameters and the safety positions have not been checked, via an electronic circuit, in immediately identifying any causes of malfunction.

    Claims (10)

    Procédé pour le contrôle du cycle de dosage des produits chimiques, de l'air et de l'eau dans un tonneau de foulonnage, tannage et teinture, dans lequel, dans une phase normale de fonctionnement, le tonneau (1) tourne autour de son axe et de l'air est mis en circulation à l'intérieur de ce tonneau au moyen d'un ventilateur (2) après avoir été chauffé par la batterie de chauffage (3) contrôlée par un thermostat (4.1, 4.2) avec présence d'un capteur d'humidité relative (5) apte à commander, si l'humidité de l'air à l'intérieur du tonneau est inférieure à un taux déterminé, l'ouverture de vannes motorisées à trois voies (6, 7, 8) dans une première position (1-3) d'entrée d'eau sous pression dans le tonneau, eau qui est pulvérisée en brouillard par au moins une buse (9A, 9B), ledit procédé étant caractérisé par le fait que, en vue de la phase de dosage des produits chimiques dans le tonneau, on interrompt la circulation de l'air à l'intérieur du tonneau, de préférence par arrêt du ventilateur (2) et/ou de la batterie de chauffage (3), on ferme l'alimentation de l'eau et on bascule les vannes à trois voies (6, 7, 8) dans une seconde position de pulvérisation des produits chimiques (11) à l'intérieur du tonneau par l'action d'une pompe (13) activée par une sonde (14) apte à constater la présence des produits chimiques contenus dans un réservoir (12), cependant que, pendant cette phase de dosage des produits chimiques, on opère un contrôle électrique de l'état du tonneau de manière que l'action de dosage des produits chimiques soit mise en oeuvre uniquement lorsque le tonneau est en rotation dans un premier sens, tandis qu'au contraire, ladite action de dosage est immédiatement bloquée lors de l'arrêt de la rotation ou la mise en rotation dans un second sens inverse, opposé au premier, pour être mise de nouveau en oeuvre à la reprise de l'état de rotation du tonneau, dans ledit premier sens. Method for controlling the dosing cycle of chemicals, air and water in a fulling, tanning and dyeing barrel, in which, in a normal operating phase, the barrel (1) rotates around its axis and air is circulated inside this barrel by means of a fan (2) after being heated by the heating coil (3) controlled by a thermostat (4.1, 4.2) with the presence of '' a relative humidity sensor (5) capable of controlling, if the air humidity inside the barrel is lower than a determined rate, the opening of motorized three-way valves (6, 7, 8 ) in a first position (1-3) for entering pressurized water into the barrel, water which is sprayed in mist by at least one nozzle (9A, 9B), said process being characterized in that, for the purpose of dosing the chemicals in the barrel, the circulation of air inside the barrel is interrupted, preferably by stopping the fan (2) and / or from the heating coil (3), the water supply is closed and the three-way valves (6, 7, 8) are tilted in a second chemical spraying position (11) inside the barrel by the action of a pump (13) activated by a probe (14) capable of detecting the presence of the chemicals contained in a tank (12), however, during this chemical dosing phase, a electrical control of the state of the barrel so that the metering action of the chemicals is implemented only when the barrel is rotating in a first direction, while on the contrary, said metering action is immediately blocked during stopping rotation or starting rotation tion in a second opposite direction, opposite to the first, to be implemented again upon resumption of the state of rotation of the barrel, in said first direction. Procédé selon la revendication 1, caractérisé par le fait que, pendant la phase d'arrêt du dosage des produits chimiques, deux vannes (6, 7) à trois voies prennent une position (2-3, 1-3) de décharge rapide des buses (9) de pulvérisation.Method according to claim 1, characterized in that, during the phase chemical dosing stop, two three-way valves (6, 7) take a position (2-3, 1-3) for rapid discharge of the spray nozzles (9). Procédé selon la revendication 2, caractérisé par le fait que, lorsque la sonde (14) ne constate plus la présence de produits chimiques (11) dans le réservoir (12), on revient aussitôt automatiquement à la phase normale de fonctionnement, avec reprise de la circulation de l'air, les trois vannes à trois voies (6, 7, 8) étant disposées dans leur première position d'entrée d'eau sous pression.Method according to claim 2, characterized in that, when the probe (14) no longer finds the presence of chemicals (11) in the tank (12), we immediately returns to the normal operating phase, with resumption of air circulation, the three three-way valves (6, 7, 8) being arranged in their first pressure water inlet position. Procédé selon la revendication 2, caractérisé par le fait que, lorsque la sonde (14) ne constate plus la présence de produits chimiques (11) dans le réservoir (12), on revient automatiquement, de façon temporisée, à la phase normale de fonctionnement, avec reprise de la circulation de l'air, les trois vannes à trois voies (6, 7, 8) étant disposées dans leur première position d'entrée d'eau sous pression.Method according to claim 2, characterized in that, when the probe (14) no longer finds the presence of chemicals (11) in the tank (12), we returns automatically, in a timed fashion, to the normal operating phase, with resumption of air circulation, the three three-way valves (6, 7, 8) being arranged in their first pressure water entry position. Procédé selon une ou plusieurs des revendications précédentes, caractérisé par l'emploi, dans le circuit de l'air, d'une vanne à quatre voies (15) qui possède une première position (1-2, 3-4) de passage normal, ladite vanne à quatre voies étant apte, lorsque le capteur d'humidité relative (5) constate un degré d'humidité de l'air supérieur à celui établi, à adopter une seconde position (1-3, 2-4) de recyclage-renouvellement, dans laquelle l'air provenant du tonneau est expulsé et remplacé dans le circuit par de l'air neuf prélevé sur l'environnement extérieur et éventuellement préalablement refroidi par un groupe frigorifique.Method according to one or more of the preceding claims, characterized by the use, in the air circuit, of a four-way valve (15) which has a first normal passage position (1-2, 3-4), said four-way valve being suitable, when the relative humidity sensor (5) finds a higher humidity level than that established, to adopt a second position (1-3, 2-4) of recycling-renewal, in which the air from the barrel is expelled and replaced in the circuit by fresh air taken from the external environment and possibly previously cooled by a group refrigerator. Procédé selon une ou plusieurs des revendications précédentes, caractérisé par le fait que, lorsqu'il est nécessaire d'activer l'humidification, l'eau est pulvérisée à travers au moins une buse (9A) de manière cyclique, en alternant des phases actives de pulvérisation et des phases d'arrêt, jusqu'à ce qu'on ait atteint le degré d'humidité voulu.Method according to one or more of the preceding claims, characterized by that when it is necessary to activate humidification, water is sprayed through at minus one nozzle (9A) cyclically, alternating active spraying phases and stop phases, until the desired humidity level has been reached. Procédé selon la revendication 6, caractérisé en ce que la durée des phases de pulvérisation et d'arrêt de la pulvérisation de l'eau est réglée au moyen de deux pulvérisateurs (16, 17) placés dans un tableau de commande (10).Method according to claim 6, characterized in that the duration of the phases of spraying and stopping the spraying of water is adjusted by means of two sprayers (16, 17) placed in a control panel (10). Procédé selon la revendication 7, caractérisé par le fait que pendant une première période, l'une (6) des vannes à trois voies est dans la seconde position (2-3) de décharge rapide des buses, tandis que, pendant la période suivante, ladite vanne (6) est dans la première position (1-3) d'entrée d'eau sous pression.Method according to claim 7, characterized in that during a first period, one (6) of the three-way valves is in the second position (2-3) of rapid discharge of the nozzles, while, during the following period, said valve (6) is in the first position (1-3) for entering pressurized water. Procédé selon une ou plusieurs des revendications précédentes, caractérisé par le fait de prévoir un système de diagnostic avec alarme à distance qui permet de contrôler le fonctionnement de la machine en surveillant en continu l'état des protections thermiques des consommateurs électriques, la présence de l'alimentation électrique, hydraulique, pneumatique, et toutes les autres fonctions vitales, le tout sans arrêter la machine, et dans la cas d'anomalies, d'actionner une alarme à distance, telle qu'un signal sonore, optique ou un combinateur téléphonique qui alerte l'opérateur responsable, même lorsque celui-ci n'est pas directement présent à proximité de l'installation.Method according to one or more of the preceding claims, characterized by providing a diagnostic system with remote alarm that allows monitoring the machine operation by continuously monitoring the condition of the thermal protections electrical consumers, the presence of electrical and hydraulic power, pneumatic, and all other vital functions, all without stopping the machine, and in in the event of anomalies, activate a remote alarm, such as an audible, optical or a telephone handset that alerts the operator responsible, even when the operator is not directly present near the installation. Procédé selon une ou plusieurs des revendications précédentes, caractérisé par le fait de prévoir un système d'autodiagnostic qui opère avant la mise en marche de la machine et qui a pour fonction d'invalider cette mise en marche aussi longtemps que les paramètres de travail et la position des sécurités, en identifiant immédiatement les éventuelles causes de défaut de fonctionnement, n'ont pas été contrôlés au moyen d'un circuit électronique.Method according to one or more of the preceding claims, characterized by providing a self-diagnostic system which operates before the start of the machine and which has the function of invalidating this start-up as long as the working parameters and the position of the safety devices, immediately identifying the possible causes of malfunction, have not been checked with a electric circuit.
    EP99118917A 1998-09-28 1999-09-25 Process for the controlled dosing of products in a drum Expired - Lifetime EP0990707B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    IT98VI000184A ITVI980184A1 (en) 1998-09-28 1998-09-28 PROCEDURE FOR CONTROL OF THE DOSING CYCLE OF CHEMICAL PRODUCTS, AIR AND WATER IN THE FILLING, RETANING AND
    ITVI980184 1998-09-28

    Publications (3)

    Publication Number Publication Date
    EP0990707A2 true EP0990707A2 (en) 2000-04-05
    EP0990707A3 EP0990707A3 (en) 2002-04-17
    EP0990707B1 EP0990707B1 (en) 2004-02-11

    Family

    ID=11426811

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99118917A Expired - Lifetime EP0990707B1 (en) 1998-09-28 1999-09-25 Process for the controlled dosing of products in a drum

    Country Status (7)

    Country Link
    EP (1) EP0990707B1 (en)
    AR (1) AR021831A1 (en)
    AT (1) ATE259427T1 (en)
    BR (1) BR9907467B1 (en)
    DE (1) DE69914691T2 (en)
    ES (1) ES2216399T3 (en)
    IT (1) ITVI980184A1 (en)

    Cited By (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2001032937A1 (en) * 1999-10-29 2001-05-10 Italprogetti Engineering S.R.L. Dry milling drum
    EP1690950A2 (en) * 2005-02-15 2006-08-16 Erretre S.p.A. Milling, dyeing and retanning drum
    WO2009107163A2 (en) * 2008-02-29 2009-09-03 Erretre S.P.A. Method for treating flexible laminar surfaces
    US8206461B1 (en) 2011-01-28 2012-06-26 BOXMARK LEATHER proizvodnja in trgovina d.o.o. Process and device for treating leather
    IT201700026639A1 (en) * 2017-03-10 2018-09-10 Erretre Spa METHOD FOR RECOGNITION OF THE BOTTALING STATE OF SKINS
    IT201800002869A1 (en) * 2018-02-20 2019-08-20 Vallero Int S P A Tanning unit for the evaluation of the life cycle including a drum
    CN113862403A (en) * 2021-11-10 2021-12-31 无锡市新达轻工机械有限公司 Cold air type temperature and humidity control leather softening machine system

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN106197753A (en) * 2016-08-19 2016-12-07 无锡市新达轻工机械有限公司 Rotary drum system for detecting temperature

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    Publication number Priority date Publication date Assignee Title
    GB2081303A (en) * 1980-08-08 1982-02-17 Dose Ludwig Softening leather
    GB2098885A (en) * 1981-04-08 1982-12-01 Remonato Fulvio Spray booth
    DD219506A1 (en) * 1983-10-10 1985-03-06 Lederwaren Veb K METHOD AND DEVICE FOR TANGING SKIN AND SKIN
    EP0960948A1 (en) * 1998-05-27 1999-12-01 ERRETRE s.r.l. Drum for milling, dyeing and tanning

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2081303A (en) * 1980-08-08 1982-02-17 Dose Ludwig Softening leather
    GB2098885A (en) * 1981-04-08 1982-12-01 Remonato Fulvio Spray booth
    DD219506A1 (en) * 1983-10-10 1985-03-06 Lederwaren Veb K METHOD AND DEVICE FOR TANGING SKIN AND SKIN
    EP0960948A1 (en) * 1998-05-27 1999-12-01 ERRETRE s.r.l. Drum for milling, dyeing and tanning

    Cited By (17)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2001032937A1 (en) * 1999-10-29 2001-05-10 Italprogetti Engineering S.R.L. Dry milling drum
    EP1690950A2 (en) * 2005-02-15 2006-08-16 Erretre S.p.A. Milling, dyeing and retanning drum
    EP1690950A3 (en) * 2005-02-15 2007-07-18 Erretre S.p.A. Milling, dyeing and retanning drum
    WO2009107163A2 (en) * 2008-02-29 2009-09-03 Erretre S.P.A. Method for treating flexible laminar surfaces
    WO2009107163A3 (en) * 2008-02-29 2009-10-22 Erretre S.P.A. Method for treating flexible laminar surfaces
    US8206461B1 (en) 2011-01-28 2012-06-26 BOXMARK LEATHER proizvodnja in trgovina d.o.o. Process and device for treating leather
    CN102618671A (en) * 2011-01-28 2012-08-01 博克斯马克皮革生产和贸易公司 Process and device for treating leather
    EP2481821A1 (en) * 2011-01-28 2012-08-01 Boxmark Leather proizvodnja in trgovina d.o.o. Process and device for treating leather
    JP2012158752A (en) * 2011-01-28 2012-08-23 Boxmark Leather Proizvodnja In Trgovina Doo Process for tanning leather
    AU2012200242B2 (en) * 2011-01-28 2012-10-25 BOXMARK LEATHER proizvodnja in trgovina d.o.o. Process and device for treating leather
    AU2012200242A8 (en) * 2011-01-28 2013-02-21 BOXMARK LEATHER proizvodnja in trgovina d.o.o. Process and Device for Treating Leather
    AU2012200242B8 (en) * 2011-01-28 2013-02-21 BOXMARK LEATHER proizvodnja in trgovina d.o.o. Process and Device for Treating Leather
    CN102618671B (en) * 2011-01-28 2015-07-08 博克斯马克皮革生产和贸易公司 Process and device for treating leather
    IT201700026639A1 (en) * 2017-03-10 2018-09-10 Erretre Spa METHOD FOR RECOGNITION OF THE BOTTALING STATE OF SKINS
    IT201800002869A1 (en) * 2018-02-20 2019-08-20 Vallero Int S P A Tanning unit for the evaluation of the life cycle including a drum
    EP3527674A1 (en) * 2018-02-20 2019-08-21 Vallero International S.r.l. Tanning unit for life cycle assessment comprising a drum
    CN113862403A (en) * 2021-11-10 2021-12-31 无锡市新达轻工机械有限公司 Cold air type temperature and humidity control leather softening machine system

    Also Published As

    Publication number Publication date
    EP0990707B1 (en) 2004-02-11
    BR9907467A (en) 2000-09-26
    ATE259427T1 (en) 2004-02-15
    ITVI980184A1 (en) 2000-03-28
    DE69914691D1 (en) 2004-03-18
    BR9907467B1 (en) 2011-05-31
    ES2216399T3 (en) 2004-10-16
    EP0990707A3 (en) 2002-04-17
    DE69914691T2 (en) 2004-10-07
    AR021831A1 (en) 2002-08-07

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