摘要:
The invention relates to a centrifugal separator, in particular for use in conjunction with dental equipment. The separator comprises a container (1) equipped with an inlet (2) and an outlet (3), as well as a collecting zone (4) for the separated impurities: said separator further comprises the impellers of a first pump (5) and a second pump (6); the liquid containing the impurities to be separated is introduced to the container (1) by means of the first pump (5) and exits from the container (1) crossing in centripetal direction the second pump (6) whose intake inlet (6a) is connected to the outlet (3) of the container (1); the liquid exits form the container (1) since the discharge head of the first pump (5) is superior to that of the second pump (6), while the impurities are centrifuged towards the internal walls of the container (1) and are collected on the bottom of the container (1) in the collecting zone (4).
摘要:
A suction nozzle which when being stopped up automatically delimits the suction force in the suction opening (2) to a certain predetermined value independently of the negative pressure in the suction conduit (1, 12). The suction nozzle comprises a sleeve member (3) arranged at the front end of the suction conduit (1, 12) and which forms the suction opening (2) of the device. The sleeve member (3) is by a resilient member (4) held in a first position, suction position, in which it covers side passages (5.6;15) to the suction conduit (1) and in which suction is performed through the suction opening (2). If the pressure difference immediately inside and outside the suction opening (2) exceeds a certain value, e.g. if the suction opening is stopped up, the sleeve member (3) is against the action of the resilient member (4) automatically displaced to a second position in which said side passages (5,6;15) to the suction conduit are opened, thereby reducing the suction force in the suction opening (2).
摘要:
Die Erfindung betrifft eine zahnärztliche Absaugeinrichtung zum Absaugen von flüssigen und festen Teilchen, bei der in die Saugleitung ein Separierbehälter (4) zwischengeschaltet ist, in welchem das Sauggut zyklonartig einströmt und in welchem die abgesaugten Teilchen von der Saugluft getrennt, gesammelt und nach Erreichen eines bestimmten Füllstandes im Behälter, über einen Abflußkanal (16) abgeleitet werden. Um das Ansetzen von Festkörperteilchen an den Behälterwandungen, und bei Verwendung einer Schwimmer-Einrichtung auch am Schwimmer zu vermeiden, wird erfindungsgemäß vorgeschlagen, im Behälter (4) wenigstens einen Schwimm- und Schwebekörper (26) frei beweglich anzuordnen, dessen Form, Volumen und Gewicht so bemessen ist, daß er bei leerem Behälter vom Luftstrom mitgerissen wird und bei vorhandener Flüssigkeit im Behälter unter Eigendrehung auf dieser schwimmt.
- A box-like shell (1) to be fixed to the dentist's main set-up with a collector (2) maintained under vacuum and a filter drawer (4) within the latter, - an upper compartment (13) containing the pneumatic (10) and electrical command (33) devices, - a cover (38) with its forked casings (38a) which can be attached directly to the top of the box-like shell (1) or which, according to an alternate embodiment ofthe invention, can be connected to said box-like shell (1) by articulating arms (57) which allow adjustment of the position of the cover (38) with respect to said box-like shell (1).
摘要:
A dental appliance for evacuating debris and liquid from the mouth during dental operations comprising a collector member (10) having a semi-rigid bite block portion (47) and a combination tongue guard and a collector membrane holder (49) connected to the bite block portion (47) and carrying a flexible collector membrane (24) detachably secured to the bite block portion (47). the collector membrane (24) in use engaging the tissues of the mouth so as to separate the mouth into two compartments. a forward compartment for working in and a rear compartment.
摘要:
Le pare-langue consiste en un pare-langue ( 1 ) comportant un moyen de fixation à la mandibule dans sa partie antérieure sous forme de gouttière (3) à remplir de matière plastique se solidifiant et un moyen de fixation à la mandibule dans la région sous-mentonnière (4) réglable et verrouillable, ces moyens de fixation constituant un ensemble de manière à permettre de dégager au maximum le champ opératoire. Le pare-langue proprement dit (1) et le moyen de fixation sous-mentonnier (4) sont reliés sur la gouttière (3) par un organe d'assemblage (5) réglable et verrouillable, de manière à obtenir une fixation au niveau adéquat par rapport au bord incisal ou, en l'absence de dents, à la partie supérieure de la crête.
摘要:
The invention relates to improvements in a console carrying the tubes of oral suction equipment used in dentistry, and concerns units of the type in which removal of a suction tube from the console triggers operation of a valve in order to produce suction through the tube. Improvements envisaged are those of including a three-way pneumatic control valve (3) controlling operation of each main diaphragm valve (10), and filtration means (5) located in the console at a point upstream of each diaphragm valve; also, a flushing hose (13) serving each diaphragm valve, which exploits negative pressure created immediately upstream of the valve seat when the diaphragm is raised in order to draw washing liquid from a receptacle.