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Machine translation
1. (WO1981002724) METHOD FOR ADJUSTING THE TRANSPORT CONDITIONS IN A PNEUMATIC CONVEYOR AND PNEUMATIC PLANT IN A FLOUR-MILL FOR IMPLEMENTING SUCH METHOD
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/002724    International Application No.:    PCT/EP1981/000020
Publication Date: 01.10.1981 International Filing Date: 19.03.1981
IPC:
B65G 53/60 (2006.01), B65G 53/66 (2006.01)
Applicants:
Inventors:
Priority Data:
2146/80 19.03.1980 CH
Title (EN) METHOD FOR ADJUSTING THE TRANSPORT CONDITIONS IN A PNEUMATIC CONVEYOR AND PNEUMATIC PLANT IN A FLOUR-MILL FOR IMPLEMENTING SUCH METHOD
(FR) PROCEDE DE REGLAGE DES CONDITIONS DE TRANSPORT DANS UN CONVOYEUR PNEUMATIQUE ET INSTALLATION PNEUMATIQUE DE MEUNERIE POUR LA MISE EN OEUVRE DE CE PROCEDE
Abstract: front page image
(EN)The method and plant for adjusting the transport conditions in a pneumatic conveyor conduit (7) provided with a fan may be applied particularly when the whole air conveyor plant has a flat pressure-volume characteristic. The main problem during the adjustment of such plants is the fact that the transport power of such flour-mills is subjected to important fluctuations, which give rise to adjustment difficulties, particularly when a plurality of conveyor conduits are joined together into a common manifold. According to the method, the pressure differential is measured between the inlet (8) and the outlet (11) of a cyclone (2) arranged in the conduit (7) and a valve (13) associated to the outlet (11) of the cyclone (2) is regulated automatically as a function of the pressure differential measured and with a view to obtaining a desired value for this pressure differential. Hence, the power required may be reduced substantially and with simple means since the pneumatic transport is effected in more stabilized conditions. The pneumatic flour-milling plant comprises a cyclone (2) as separator (1) cooperating with a measurement device (25) for the pressure differential and an air valve (13) controlled by such measurement device (25).
(FR)Le procede et l"installation de reglage des conditions de transport dans un conduit convoyeur pneumatique (7) muni d"une soufflante s"applique particulierement lorsque toute l"installation convoyeuse d"air presente une caracteristique pression-volume plate. Le probleme principal que se pose lors du reglage de telles installations, est le fait que la puissance de transport des installations de meunerie est soumise a des grandes fluctuations, ce qui donne lieu a des difficultes de reglage en particulier lorsqu"une pluralite de conduits convoyeurs se reunissent en un collecteur commun. Selon le procede, on mesure la difference de pression entre l"entree (8) et la sortie (11) d"un cyclone (2) dispose dans le conduit (7) et on regle automatiquement un clapet (13) associe avec la sortie (11) du cyclone (2) en fonction de la difference de pression mesuree et en vue d"obtenir une valeur desiree de cette difference de pression. Ainsi, on peut reduire considerablement et avec des moyens simples la puissance necessaire puisque le transport pneumatique se fait dans des conditions plus stabilisees. L"installation pneumatique de meunerie comprend un cyclone (2) comme separateur (1) cooperant avec un dispositif de mesure (25) pour la difference de pression et un clapet d"air (13) commande par ce dispositif de mesure (25).
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)