JPS63129941A - Milk claw for milker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 in a teat cup liner in a vacuum milker.

Conventional technology Conventional milk claws for milking machines include those shown in Figures 6 and 7.
As shown in the figure, in a milk clover main body 1 having a milk storage chamber 2 having a substantially circular cross section, a milk tube nipple 3 is connected to the bottom of the milk storage chamber 2 via an on-off valve 4.
It is known that the same number of liner nipples 5 as the nipples of the living body are provided above the storage chamber 2 and directed toward the center of the milk collection base. Note that 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 through the liner nipple 5.The opening/closing valve at the bottom of the milk storage chamber 2 is opened. Therefore, milk is fed through the milk tube nipple 3.

Problems to be Solved by the Invention However, in the case of such conventional milk claws,
There were the following inconveniences.

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

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 will cause the milk that falls to the bottom of the storage chamber to travel up the wall and into another liner nipple. There is a risk of backflow.

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

In conventional techniques 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 could not always be expressed evenly from each breast, and the effect of preventing backflow was small. Furthermore, since the milk collides at high speed, there is a risk that milk quality may 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 problem, that is, the present invention is 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, in which the cross section and longitudinal section of the milk collection chamber are polygonal. This objective is achieved by a milk claw for a milking machine formed in the following manner.

Function: 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 creates a clockwise vortex 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. As a result, the milk collected in the milk collection chamber quickly flows out of 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 less resistance to the flowing milk than before. It does not flow backwards more than the original.

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

In FIGS. 1 and 2, reference numeral 20 denotes a milk clog main body for a milking machine. It is said that This milk black body 20
A milk tube nipple 22 is protruded outwardly from below as a milk outlet. A valve 23 for opening and closing the milk outlet is attached to the milk outlet. During milking, the valve 23 is opened by being sucked toward the milk claw by vacuum pressure, but when a large amount of air flows in from the teat cup liner, the mouth is closed due to air resistance and its own weight. When the valve 23 is kept open during cleaning or the like, the valve 23 can be locked in the open state by a stopper 24 provided on the outside of the claw.

Additionally, liner nipples 25 are connected at four locations above the milk clot main body 20 as milk inflow ports.

A pulsating cap 26 is separated from the milk collection chamber 21, and is provided with a vacuum pressure supply nipple 27 and a pulsating nipple 28, which are connected to a pulsator (not shown). The nipples 27 and 28 communicate with each other for front and rear milking or for left and right milking. 29 is a hook joined to the side surface of the milk claw, and 30 is a rubber cover 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, a vortex tries to generate in a clockwise direction (in the Northern Hemisphere) near the outlet, but since the cross section of the milk claw is formed to have a polygonal shape and corners, it blocks the flow parallel to the wall surface. It works like this. 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 along the wall surface and attempts to flow back into the breast from other liner nipples. However, in this case as well, the longitudinal section of the milk claw is polygonal, so
Since the force of milk is weakened at the angles of the polygonal wall, backflow can be prevented. In this example,
Since the protrusions 31 are provided horizontally along the wall surface, it is possible to further spin the reverse flow.

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 is applied to a type of milk claw (Japanese Patent Publication No. 60-19972) in which a pressure regulating rod 38 that controls the pressure regulating hole 32 is suspended when the differential pressure of 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. Note that 39 is a pressure regulating nipple that communicates with a low vacuum pressure chamber provided in the pulsation cap 26.

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.

The one shown in FIG. 5 shows a third embodiment, in which a milk outlet is provided at the center of the bottom of the milk collection chamber 21, and a cross section in which the milk collection chamber 21 is provided with a wall surface parallel to the tangential direction of the liner nipple 25. is a polygonal milk claw. In the case of such a milk wolfberry, 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 foam, and as a result, fat separation of the milk can be prevented.

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

In addition, by widening the flat part of the bottom, the internal volume of 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 conventional one which has 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.

In addition, by configuring the vertical cross section into 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. 4 is a plan view of the milk claw shown in FIG. 3, FIG. 5 is a longitudinal sectional view showing the third embodiment of the milk claw, and FIGS. 6 and 7 are This shows the prior art, and the 6th
The figure is a longitudinal sectional view of a conventional milk claw, and FIG. 7 is a plan view of the milk claw shown in FIG. 6. 1...Milk clot main body 2...Milk storage chamber 3.
・・Milk tube nipple 4・Opening/closing valve 6・
... Liner nipple 6 ... Pulsation cap 8 ...
Pulsating nipple 9...Nipple 10...Bleed hole 20...Milk clot main 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 adjustment rod 39...Pressure adjustment nipple

Claims (2)

[Claims] (1) A milking machine having a milk collecting chamber inside, a liner nipple at the upper part, and a milk tube nipple at the lower part, characterized in that the cross section and longitudinal section of the milk collecting chamber are formed in a polygonal shape. milk claw. (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.