DE1632935B

DE1632935B - Milking cups for milking machines

Info

Publication number: DE1632935B
Authority: DE
Inventors: Der Anmelder Ist
Original assignee: Maier jun., Jakob, 8939 Türkheim

Description

druckeinrichtung einer Melkmaschine (nicht eingezeichnet) verbunden ist.printing device of a milking machine (not shown) connected is.

Der Saugeinsatz 3 ist einteilig mit einem zum Aufnehmen einer Zitze 6 (gestrichelt eingezeichnet) ausgebildeten hohlen Steckkopf 3 α gefertigt, der eine ballige Form aufweist. Zwischen den seitlichen Becherwänden 2 α und dem Saugeinsatz 3 ist ein Zwischenraum 2 b belassen, der über eine weitere Saugleitung 7 mit einem nicht eingezeichneten Pulswechsler in Verbindung steht. Durch den letzteren wird der Zwischenraum 2 b während der Saugtakte mit der Unterdruckeinrichtung und während der Entlastungstakte mit der Atmosphärenluft verbunden. Eine Durchlaßöffnung 3 b für Atmosphärenluft durchsetzt das elastische Material des Saugeinsatzes 3 im Bereich dessen Steckkopfs 3 a. Die Durchlaßöffnung 3 b ist durch ein Ventil 9"' verschließbar.The suction insert 3 is made in one piece with a hollow plug-in head 3 α designed to receive a teat 6 (shown in dashed lines), which has a convex shape. Between the lateral beaker walls 2 α and the suction insert 3, an intermediate space 2 b is left, which is connected via a further suction line 7 to a pulse changer (not shown). By the latter, the gap 2 is connected while b of the suction with the negative pressure device and during the relief cycle with the atmosphere air. A passage opening 3 b for atmospheric air penetrates the elastic material of the suction insert 3 in the area of its plug head 3 a. The passage opening 3 b can be closed by a valve 9 "' .

Gemäß Fig. 2 weist das Ventil9'" einen Verschlußkörper 9 a"' in einem Ventilgehäuse 9 c"' mit einem Ventilsitz 9 V" auf. Der Verschlußkörper 9 a'" ist durch einen relativ zum Ventilsitz 9 i"' bewegbar geführten Arbeitsteil 9 /"' in Form einer Rohrmembrane steuerbar. Das Ventilgehäuse 9 c'" ist einerseits durch einen Kanal 9 b"' über den Zwischenraum 2 b des Melkbechers 2 und die Saugleitung 7 des Pulswechslers mit diesem sowie andererseits durch eine Öffnung 9 ä"' mit der Atmosphärenluft verbunden. Deren Überdruck gegenüber dem Unterdruck während der Saugtakte des Pulswechslers verringert die Höhe der Rohrmembrane 91"' im Sinne einer Schließbewegung des Verschlußkörpers 9 a'". Die Rohrmembrane 91"' ist mit einer derartigen Elastizität ausgebildet, daß der ausnutzbare Membranhub unter der Einwirkung des atmosphärischen Überdrucks gegenüber dem Unterdruck des Pulswechslers während der Saugtakte zumindest dem erforderlichen Ventilhub entspricht. Die Rohrmembran 91"' schließt den mit der Atmosphärenluft in Verbindung stehenden Teil des Ventilgehäuses gegenüber dem mit dem Pulswechsler in Verbindung stehenden Gehäuseteil hermetisch ab.According to FIG. 2, the valve 9 '"has a closure body 9 a"' in a valve housing 9 c "' with a valve seat 9 V" . The closure body 9 a '"is characterized by a relative to the valve seat 9 i"' "'controllable in the form of a tubular membrane. The valve housing 9 c'" movably guided working part 9 / is the one hand, b through a channel 9 b "'via the gap 2 of the Milking cup 2 and the suction line 7 of the pulse changer are connected to this and, on the other hand, to the atmospheric air through an opening 9 - "'. Their overpressure compared to the underpressure during the suction cycles of the pulse changer reduces the height of the tubular membrane 91 "' in the sense of a closing movement of the closure body 9 a'". The tubular membrane 9 1 "' is designed with such elasticity that the usable membrane stroke under the action of the atmospheric overpressure compared to the negative pressure of the pulse changer during the suction cycles corresponds at least to the required valve stroke. The tubular membrane 9 1"' closes the with the atmospheric air in connection standing part of the valve housing relative to the housing part connected to the pulse changer is hermetically sealed.

In den F i g. 3 und 4 ist ein Ventil 9"" dargestellt, dessen Ventilgehäuse durch einen Bereich der seitlichen Becherwandung 2 α und einen an deren Außenseite druckdicht angeordneten Ringkörper 9 c"" gebildet ist. Im Bereich der Ringkörperachse ist die Becherwandung 2 α von einer Bohrung 14 durchsetzt, die einem Ventilsitz 9 i"" zugeordnet ist. Di-ε Ringbohrung des Ringkörpers 9 c" " ist durch eine Scheibenmembrane 91"" abgeschlossen, die in einem höchstens dem Membranhub entsprechenden Abstand vom Ventilsitz 9 /"" angeordnet ist. An der becherfernen Stirnseite des Ringkörpers 9 c"" ist bei derIn the F i g. 3 and 4, a valve 9 ″ ″ is shown, the valve housing of which is formed by a region of the lateral cup wall 2 α and an annular body 9 c ″ ″ arranged on its outside in a pressure-tight manner. In the area of the ring body axis, the cup wall 2 α is penetrated by a bore 14 which is assigned to a valve seat 9 i "" . The ring bore of the ring body 9 c ″ ″ is closed by a disk diaphragm 9 1 ″ ″ , which is arranged at a distance from the valve seat 9 / ″ ″ that corresponds at most to the diaphragm stroke. At the cup remote end face of the ring body 9 c "" is in the

ίο dargestellten Ausführungsform eine Abdeckkappe 9 c"" vorgesehen, die von Durchtrittsöffnungen 9 d"" für Atmosphärenluft durchsetzt ist. Auch bei diesem Ventil 9"" trennt die Membrane 91"" den mit der Bohrung 14 über den Zwischenraum 2 b des Melkbechers und die Saugleitung 7 an dem Pulswechsler angeschlossenen Gehäuseteil von dem mit den Druchtrittsöffnungen 9 d"" für die Atmosphärenluft versehenen Teil des Ventilgehäuses 2 a, 9 c" " hermetisch ab. Zwischen der Membrane 91"" und der benachbarten Becherwand 2 a des Melkbechers ist der Ringkörper 9 c" " durch einen Rohrstutzen 15 mit der Durchlaßöffnung 3 b des Saugeinsatzes 3 verbunden. Während des in F i g. 3 dargestellten Entlastungstakts ist der Zwischenraum 2 b des MeIkbechers über die Leitung 7 des Pulswechslers mit der Atmosphärenluft verbunden, die im Sinne der Pfeile 16 in den Innenraum des Saugeinsatzes 3 einströmt. Wird die im Hohlraum 2 b befindliche Atmosphärenluft zu Beginn des Saugtakts gemäß F i g. 4 im Sinne des Pfeils 17 durch die Leitung 7 des Pulswechslers abgesaugt, so bewirkt der Überdruck der die Durchtrittsöffnungen 9 d"" der Abdeckkappe 90"" im Sinne der Pfeile 18 durchströmenden Atmosphärenluft ein Anpressen der Membrane 91"" an den Ventilsitz9i"". Die Membrane 91"" bildet daher bei dieser Ausführungsfonn des Ventils 9 c"" gleichzeitig dessen Verschlußkörper, der außerdem den Innenraum des Saugeinsatzes 3 gegen den mit der Atmosphärenluft in Verbindung stehenden Ventilgehäuseteil 9 d"" hermetisch abschließt. Den druckdichten Abschluß zwischen dem Ventilsitz 9 /"" und der Becherwand 2 α sowie zwischen der letzteren und dem Ringkörper 9 c" " gewährleisten Dichtungen 19, 20.ίο illustrated embodiment a cap 9 c "" is provided, which is penetrated by passage openings 9 d "" for atmospheric air. Also with this valve 9 "" "The diaphragm 91 separates" the b with the bore 14 through the space 2 of the teat cup and the suction pipe 7 connected to the pulse changer housing part of the d "" provided with the Druchtrittsöffnungen 9 for the atmospheric air part of the valve housing 2 a, 9 c "" hermetically. Between the membrane 9 1 ″ ″ and the adjacent cup wall 2 a of the teat cup, the ring body 9 c ″ ″ is connected to the passage opening 3 b of the suction insert 3 by a pipe socket 15. During the in F i g. 3, the space 2 b of the MeIkbechers is connected via the line 7 of the pulse changer with the atmospheric air, which flows in the direction of the arrows 16 into the interior of the suction insert 3. If the atmospheric air located in the cavity 2 b at the beginning of the suction cycle according to FIG. 4 suctioned through the line 7 of the pulse changer in the direction of the arrow 17, the overpressure of the atmospheric air flowing through the openings 9 d "" of the cap 90 "" in the direction of the arrows 18 presses the membrane 91 "" against the valve seat 9i "". In this embodiment of the valve 9 c "" , the membrane 91 "" simultaneously forms its closure body, which also hermetically seals the interior of the suction insert 3 from the valve housing part 9 d "" connected to the atmospheric air. Seals 19, 20 ensure the pressure-tight seal between the valve seat 9 / "" and the cup wall 2 α and between the latter and the annular body 9 c "".

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

Patent claims:

1. Milking cup for milking machines with a pulse changer acting on a vacuum line, a cup sleeve and an elastic suction insert arranged therein, leaving a space between it and the side cup walls, with a valve which allows the interior to be connected to the atmospheric air and which is closed during the suction cycle and during of the relief stroke is opened and thereby establishes a connection between the interior and the atmospheric air during the relief stroke, characterized in that using a negative pressure in the closed position during the suction stroke in the negative pressure line (7) and in the open position relative to the relief stroke due to the elimination of the negative pressure to a valve seat (9 i) movable closure body (9 a) of the valve (9) and a valve housing (9 c) with a housing part connected to the pulse changer and a housing part connected to the outside air (according to Pat ent 1 299 165) at least the part (9 b or 14) of the valve housing that is connected to the pulse changer by a working part (9 V) of the closure body that is in connection with the atmospheric air and is guided therein so as to be movable relative to the valve seat (9 i) Housing part (9d) is separated.

2. Milking cup according to claim 1, characterized in that the working part (9 Z) is designed as a tubular {91 "') or disc membrane (9 1"") with such an elasticity that the usable membrane stroke under the action of the atmospheric pressure compared to the negative pressure of the pulse changer during the suction cycles corresponds at least to the required valve lift.

4545

The invention relates to a teat cup for milking machines with a vacuum line acting on it Pulse changer, a cup sleeve and one in it, leaving a gap between it and the side walls of the cup arranged elastic suction insert with a das Connect its interior with the atmospheric air permitting valve during the suction stroke is closed and is open during the relief cycle, and thereby a Establishes connection between the interior and the atmospheric air.

According to the main patent, the valve has a through the suction stroke in the vacuum line The negative pressure prevailing in the closed position and during the relief cycle due to the elimination of the negative pressure in the open position relative to a valve seat movable closure body and a valve housing with a housing part connected to the pulse changer and a part that is connected to the outside air Housing part on. The valve has a ball forming the closure body as a self-closing valve formed, whereby the closing movements of the closure body are somewhat delayed. this requires, however, that at the beginning of the suction cycle a volume of atmospheric air, albeit a small one from the valve housing part connected to the pulse changer via a control suction line into the distributor lines of the pulse changer and possibly also penetrates into the elastic suction insert and thereby reduces the suction cycle effect.

The present invention therefore aims to achieve the object described in the main patent better to solve that the valve closes more precisely. This is achieved by using a due to the underpressure prevailing in the vacuum line during the suction cycle in the closed position and at Relief stroke movable relative to a valve seat due to the elimination of the negative pressure in the open position Closure body of the valve and a valve housing with one connected to the pulse changer Housing part as well as a housing part that is in contact with the outside air (according to patent 1 299 165) through at least the part of the valve housing that is connected to the pulse changer a therein movably guided relative to the valve seat working part of the closure body of the with the Atmospheric air communicating housing part is separated. :

These measures only require a minor construction effort and ensure that the closure body of the valve immediately moves suddenly into the closed position at the beginning of the suction cycle and reductions in the negative pressure in the suction line system of the pulse changer are prevented because the part of the valve housing connected to the latter is exposed to atmospheric air is completed. This further increases the efficiency of the milking machine.

In this context, it is advantageous if the working part has a tubular or disk membrane such elasticity is formed that the usable diaphragm stroke under the action of the Atmospheric overpressure compared to the negative pressure of the pulse changer during the suction cycles at least corresponds to the required valve lift.

The disc or tube diaphragm provided as the working part of the valve body not only works smoothly and therefore without delay, but also includes at least the one with the pulse changer related part of the valve housing hermetically against the atmospheric air.

Embodiments of the invention are shown in the drawing. In this shows

F i g. 1 schematically and partially in section The illustrated side view of a teat cup during a suction cycle of a milking machine,

F i g. FIG. 2 shows a section, shown schematically on an enlarged scale, through detail A from FIG. 1 with an assigned valve,

F i g. 3 shows a schematic section through a modified embodiment of a valve during a relief cycle of the milking machine, and

F i g. 4 shows a schematic section through the valve according to FIG. 3 during a suction cycle of the Milking machine.

A teat cup 2 according to FIG. 1 consists of a cup sleeve with lateral cup walls 2 α and an elastic suction insert 3, the interior of which is permanently connected to a lower part via a suction line 4