JPH035775B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a milk claw for a milking machine for collecting expressed milk into a teat cupliner in a vacuum milker.

Prior Art As shown in FIGS. 6 and 7, a conventional milk claw for a milking machine has a milk claw main body 1 having a milk storage chamber 2 having a substantially circular cross section, which opens and closes below the milk storage chamber 2. A milk tube nipple 3 is provided via a valve 4, and above the storage chamber 2 there are liner nipples 5 of the same number as the teats of the cow.
It is known that the milk collecting chamber is provided with the holder facing toward the center of the bottom of the milk collection chamber. 6 is a pulsating cap provided directly above the storage chamber 2, and the pulsating cap 6 is provided with a pulsating nipple 8 for supplying vacuum pressure to a teat cup (not shown). 9 is a vacuum pressure supply nipple connected to a pulsator via a tube, and 10 is a bleed hole bored in the wall of the storage chamber 2.

In the configuration described above, milk is expressed from the teat and flows toward the center of the bottom of the milk storage chamber 2 via the teat nipple 5. The milk that has flowed in is sent through the milk tube nipple 3 because the opening/closing valve below the milk storage chamber 2 is open.

Problems to be Solved by the Invention However, such conventional milk claws have the following disadvantages.

a When milk flows out from the storage chamber, a vortex is generated by the milk that has flowed into the storage chamber because the cross section of the milk claw is configured to be approximately circular. When this vortex is generated, the milk accumulated in the milk storage chamber due to centrifugal force does not flow out quickly.

b The generation of vortices causes the milk to be agitated, which tends to cause fat separation, which is a factor in the deterioration of milk quality.

c When milk flows into the storage chamber from the liner nipple, the cross section is formed smoothly, so the kinetic energy of the milk as it falls causes the milk that falls to the bottom of the storage chamber to flow down the wall and into another liner nipple. There is a risk of backflow from the pull.

Milk reflux is undesirable because it leads to transmission of mastitis between each teat.

In the conventional technique for preventing this backflow, the center line of the liner nipple is directed toward the center of the bottom of the milk collection chamber so that the milk collides with the milk at the center of the bottom. However, milk was not always expressed equally from each breast, and the effect of preventing backflow was small. Furthermore, since the milk collided at high speed, there was a risk that the quality of the milk would deteriorate due to fat separation.

SUMMARY OF THE INVENTION In view of the drawbacks of the prior art, it is an object of the present invention to provide a milk claw in which vortices are less likely to occur in the milk storage chamber and milk does not flow backwards.

Means for Solving the Problems That is, the present invention provides a milk claw having a milk collection chamber inside, a liner nipple at the upper part, and a milk tube nipple at the lower part. This objective is achieved by a milk claw for a milking machine formed into a polygonal shape.

Effect: When expressed milk flows into the milk collection chamber of the milk claw according to the present invention, the milk that enters the milk collection chamber swirls clockwise in the northern hemisphere due to the earth's rotation near the bottom. However, since the cross section of the milk collection chamber is formed into a substantially polygonal shape, the flowing milk stagnates at the corners of the wall of the milk collection chamber and its kinetic energy is weakened, so no vortex is generated. It's over. As a result, the milk accumulated in the milk collection chamber quickly flows out from the storage chamber.

Also, if the milk flowing into the milk claw has a strong force, it will try to flow back through the other liner nipples along the wall surface, but since the vertical cross section of the milk claw is polygonal, there is no resistance to the flowing milk. It does not backflow as much as the conventional type.

Embodiments The present invention will be explained in detail below with reference to embodiments shown in the drawings.

1 and 2, 20 is a milk claw main body for a milking machine, and the milk claw main body 20
is formed so that its vertical and cross sections are polygonal. The inside is used as a milk collection chamber 21. Below this milk claw main body 20, there is a milk tube nipple 22 on the outside as a milk outlet.
stands out. This milk outlet is equipped with a valve 23 that opens and closes the outlet. During milking, the valve 23 is opened by being drawn toward the milk claw side by vacuum pressure, but when a large amount of air flows in from the Teito cutoff liner, the mouth is closed due to air resistance and its own weight. When the claw is kept open during cleaning, etc., a stopper 24 provided on the outside of the claw allows the claw to be opened normally.
The valve 23 can be locked in the open state.

Moreover, liner nipples 25 are joined at four locations above the milk claw main body 20 as milk inflow ports. A pulsating cap 26 is separated from the milk collection chamber 21, and is provided with a nipple 27 for supplying vacuum pressure and a pulsating nipple 28, which is connected to a pulsator (not shown). The nipples 27 and 28 communicate with each other for front and rear milking or left and right milking. 29 is a hook joined to the side surface of the milk claw, and 30 is a rubber lid for a cushion provided at the bottom of the milk claw main body 20. A projection 31 is installed horizontally on the wall of the milk collection room 21 along the wall.

In the milk claw according to the present invention configured as described above, milk expressed from the liner nipple 25 flows into the milk collection chamber 21. The inflowing milk descends along the wall surface and accumulates in the milk collection chamber 21.
This accumulated milk is discharged through the milk tube nipple 22 because the milk discharge port is in an open state during milking. At this time, near the outlet,
A vortex tends to occur clockwise (in the Northern Hemisphere), but since the cross section of the milk claw is polygonal and has corners, it acts to block the flow parallel to the wall surface. As a result, vortex formation is suppressed. On the other hand, when milk falls forcefully from a liner nipple, a portion of it jumps up against the wall and tries to flow back into the breast from other liner nipples. However, in this case as well, since the milk claw has a polygonal longitudinal section, the force of the milk is weakened at the corners of the polygonal wall surface, thereby preventing backflow. In this embodiment, since the protrusion 31 is provided horizontally along the wall surface,
Furthermore, backflow can be prevented.

Next, FIGS. 3 and 4 show a second embodiment, in which the milk collecting chamber 21 of the milk claw of the first embodiment is connected through a plate 33 having a pressure regulating hole 32 in the center. The milk collection chamber 34 is divided into a milk storage chamber 34 and a storage chamber 35, and a low vacuum pressure chamber 37 is formed in the upper part of the milk collection chamber 34 via a diaphragm 36. This figure shows an application to a type of milk claw (Japanese Patent Publication No. 60-19972) in which a pressure regulating rod 38 that closes the pressure regulating hole 32 is suspended when the differential pressure is above a certain level. In this second embodiment, the milk collecting chamber 34 and the storage chamber 35 are also formed in a polygonal cross section and a vertical cross section. In addition, 39 is the pulsation cap 26
This is a pressure regulating nipple that communicates with the low vacuum pressure chamber installed in the chamber.

In the case of this embodiment as well, since each cross section is formed in a polygonal shape as in the first embodiment, it is possible to prevent the generation of vortices near the milk outlet and the pressure regulating hole.

What is shown in FIG. 5 shows the third embodiment.
A milk outlet is provided at the center of the bottom of the milk collection chamber 21,
The milk collection chamber 21 is a milk claw with a polygonal cross section and a wall surface parallel to the tangential direction of the liner nipple 25. In the case of such a milk claw, milk flowing from the liner nipple 25 flows down along the wall surface. Therefore, the milk in the milk collection chamber 21 is less likely to scatter and is less likely to foam. As a result, fat separation of milk can be prevented.

Furthermore, as shown in Figures 1 and 3, if the center line of the liner nipple intersects with the bottom of the milk collection chamber outside the center of the bottom, the flow rate of milk flowing through the bottom will be suppressed, making it even more effective in preventing backflow. It also helps improve milk quality.

In addition, by widening the flat part of the bottom, the volume inside the milk collection chamber can be increased compared to the external dimensions, and the vacuum pressure can be stabilized, and the milk spreads out to even out the amount flowing out from the tube nipple. be able to.

Effects As described above, the milk claw according to the present invention has a polygonal cross-section both horizontally and vertically, compared to the previous ones which had a circular cross-section. This can be prevented from occurring. Since the generation of whirlpools can be prevented, milk can be discharged more quickly than in the conventional method.

Furthermore, by configuring the vertical cross-section in a polygonal shape, it is possible to prevent the backflow of milk that occurs in conventional products, so it is possible to prevent mastitis infection that occurs between the breasts.

[Brief explanation of the drawing]

1 to 5 show embodiments of the present invention; FIG. 1 is a longitudinal sectional view of a milk claw, FIG. 2 is a plan view of the milk claw shown in FIG. 1, and FIG. Vertical sectional view of the milk claw showing the embodiment, No. 4
The figures are a plan view of the milk claw shown in Fig. 3, Fig. 5 is a vertical cross-sectional view showing a third embodiment of the milk claw, Figs. 6 and 7 show the prior art, and Fig. 6 shows the conventional FIG. 7 is a longitudinal sectional view of the milk claw, and FIG. 7 is a plan view of the milk claw shown in FIG. 1... Milk claw body, 2... Milk storage chamber, 3... Milk tube nipple, 4... Opening/closing valve, 6... Liner nipple, 6... Pulsating cap, 8... Pulsating nipple, 9... Nitpur,
10...Bleed hole, 20...Milk claw body, 21...Milk collection chamber, 23...Valve,
22... Milk tube nipple, 24... Stopper, 25... Liner nipple, 26... Pulsating cap, 27... Nipple, 28... Pulsating nipple, 29... Hook, 30... Rubber lid, 31
...Protrusion, 32...Pressure adjustment hole, 33...Plate,
34...Milk collection chamber, 35...Storage chamber, 36...Diaphragm, 37...Low vacuum pressure chamber, 38...Pressure regulation rod, 39...Pressure regulation nipple.

Claims (1)

[Scope of Claims] 1. A milk claw having a milk collecting chamber inside, a liner nipple at the upper part, and a milk tube nipple at the lower part, in which the cross section and longitudinal section of the milk collecting chamber are formed in a polygonal shape. A milk claw for milking machines featuring: 2. The milk claw for a milking machine according to claim 1, wherein a milk collecting chamber having a polygonal cross section is provided with horizontal protrusions along the wall surface.