JPS63112937A - Pipeline type milking apparatus - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a pipeline type dairy cow milking device.

[Conventional technology]

In the past, milk from dairy cows was milked by hand, but now a pipeline method using vacuum pressure has been adopted to ensure production due to the balance between supply and demand.

From the perspective of preventing mastitis, which is a type of disease in dairy cows, it is most desirable for the calf to receive the hole, but this is not the case when the pipeline method is adopted.

Also, if mastitis develops, it will progress to waste cows, so prevention is important.

The causes of mastitis are not completely understood as many neutral factors are intertwined, but there are some experimental results regarding the relationship between the pipeline system and mastitis, the main ones being: It is said that the greater the variation in vacuum pressure, the more likely mastitis will occur. Furthermore, it is said that if the suction pressure is too high, the physical stimulation of the cow's teats becomes strong, which is one of the causes of mastitis.

For these reasons, in order to prevent mastitis, it is desirable to have little variation in the suction vacuum pressure, to keep the suction wall pressure as low as possible within the milking range, and to have good pine surge to the teat. .

Teat cups are currently used in consideration of these conditions.

First, we will explain the principle behind teat cups.

As shown in FIG. 9, the teat cup 9 has a liner 3 made of an elastic material such as rubber inside a stainless steel shell 29.
0, the inside of the liner 30 is defined as an inner chamber B, and the gap between the liner 3o and the shell 29 is defined as an outer chamber A. The liner 3o is fitted so as to directly contact the teat 31 of the dairy cow.

In the state on the left side of the figure, the vacuum pressures in the inner chamber B and the outer chamber 5i1A are equalized, the inner and outer pressures of the liner 30 are made equal, and the liner 5Q is in a state in which no true full pressure is applied.

Thereby, the liner 30 is restored to its original shape by its own elastic force.

This state is achieved by switching the pulsator 12, in which case the short pulse tube 32 is communicated with the vacuum air pipeline via the pulsator 12,
The pressure is the same as the suction pressure of the short milk tube '52' connected to the milk feeding pipeline (hereinafter this state will be referred to as the suction period).

In the state on the right side of the figure, the short pulse tube 32 is opened to the atmosphere by switching the pulsator 12, and as a result, the outer chamber A also becomes atmospheric pressure, and due to the pressure difference between the vacuum pressure in the chamber B and the vacuum pressure in the chamber B, the liner 30 reaches 0. The tube is closed at the end as shown in FIG. As a result, milk suction is stopped (hereinafter this state is referred to as the pine surge stage). Above pulsator 1
The switching in step 2 is repeated several hundred times in one milking session.
As a result, the liner 60 is also crushed and restored to its original shape the same number of times.

In this way, the structure of the teat cup approximates the way a calf receives a hole.

- Pipeline systems can be divided into five types in consideration of fluctuations in vacuum pressure. It is known that fluctuations in this vacuum pressure are greatly influenced by the height of the water head between the teat 31 (or teat cup 9) of the dairy cow and the milk feeding line.

First, the fourth factor is the packet method. The basic configuration of this system is: 4 vacuum pumps, 5 Makabe tanks with a constant capacity. A pressure regulator 6. regulates the pressure in the vacuum tank 5 to a pressure suitable for milking and entertainment. Air pipeline 25. 12 pulsators, 4 teat cups 9. Claw 10° Claw 10 and pulsator 1 are distributed to these four teat cups 9 via short milk feeding tubes (short air tubes) 32 that are integrally connected to the liner.
The long milk tube 2 s e claw 10 connects the long milk tube 2 with the packet 33 and the long milk tube 24 connects with the packet 33.

Note that 21 is a vacuum gauge and 22 is a vacuum tap.

The water head of this packet method is H.

On the other hand, the one shown in FIG. 5 is called a one-type milker system that directly squeezes milk from a milk can, and has a larger water head H than the packet system.

The one shown in FIG. 6 is a pipeline milker system, which differs from the previous system in that milk from a large number of dairy cows is collected in a receiver 8 through a milk feeding pipeline 26, an air pipeline 25, and a milk feeding vibrator. Two points are provided in the sanitary trough to prevent moisture from entering the line 26 or the discharge pipeline 27.

The water head H of this system is as high as 1805200 crR. The system shown in FIG. 7 is a recorder/milking parlor system, and is the same as the above pipeline system with a 28ft recorder jar for storing and measuring milk from individual cows. The water head H of this method is 80 to 100 cm
It is.

The one shown in FIG. 8 is a single-type low-line milking parlor, and is characterized by having a low water head on the Ht-minus side. This method has the least pressure fluctuation and is currently the best method.

Now, in all of the conventional pipeline type milking apparatuses, the vacuum pressure of the milk feeding pipeline and the air pipeline are equal.

That is, to explain the single-type low-line milking parlor shown in FIG. 8, which is said to be the most corroded, the pressure inside the vacuum tank 5 is regulated by a pressure regulator 6.

Since this pressure regulator 6 is provided on the outlet side of the vacuum tank 5, the vacuum source of the milk feeding system from the air pipeline 25 and the receiver 8 to the teat cup 9 is the same.

Therefore, the pressure sources of the true wall pressures in the inner and outer chambers of the teat cup 9 are also the same, and the pressures therebetween are approximately the same.

[Problem that the invention seeks to solve]

As in the past, when the vacuum sources of the air pipeline system and the milk feeding system are combined into one, and the operation of the teat cup liner is made to depend on the elastic force of the liner itself,
There was a problem in that the liner became fatigued and its operation could no longer be sustained, leading to insufficient nipple pine surge and the like, increasing the possibility of mastitis being induced.

If the operation depends on the elastic force of the liner itself, ideally the shape of the liner during the suction stage should be a perfect circle as shown in Figure 10, but due to liner fatigue etc. may become oval in shape. In such cases, the pine surge of the nipple becomes uneven, and the first
When moving from the pine surge stage (liner occlusion state) to the suction stage shown in Figure 2, the restoration of the liner becomes uncertain and the breast I
J! There was a problem that it could cause a fire.

Also, even if you attempt to solve the problem of mastitis by lowering the suction vacuum pressure, the pressure in the air pipeline system will also decrease, which will affect the operation of the pulsator, which is operated by air, and the vacuum pressure above a certain level will not work. There was a drawback that it was unavoidable.

In addition, the flow resistance and head pressure of the milk feeding line vary depending on the type of pipeline system and the implementation of the milking equipment, and the vacuum pressure of suction changes due to changes in the milk feeding height, making it difficult to adapt to each system. There was a hiatus.

The present invention aims to provide a pipeline type dairy cow milking device that solves these problems.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a teat that includes a liner inside the shell, an inner chamber formed by the liner, and an outer chamber formed by the space between the outside of the liner and the inside of the shell. In a pipeline-type dairy milk machine, which has a milk feeding line connected to the inner chamber of the cup and a vacuum air pipeline connected to the outer chamber, the milk feeding line is connected to the inner chamber and the outer chamber, respectively. It is characterized by having different pressures in the line and air pipeline.

[For production]

With this configuration, the operation of the liner does not depend on the elastic force of the liner itself, but the operation of the liner is facilitated by the vacuum pressure in the outer chamber, and the operation of the teat cup is ensured.

In addition, the pressure inside the outer chamber is set according to each type of milking device and the operation of these devices, and the operation of the teat cup of each type of milking device is ensured.

[Actual example]

An exemplary embodiment of the present invention will be described in detail below.

In Figure 1, 4 is a vacuum pump, 5 is a vacuum tank, and 6 is a vacuum pump.
is a pressure regulator, and 7 is a sanitary trap.

8 is receiver, 9 is teat cup, 10 is claw, 1
1 is a milk pump, 12 is a pulsator.

2! I is a long pulse tube, 24 is a long milk tube, and is a low line, milking, and parlor one type milking device shown in FIG.

1 is a vacuum pump provided separately for the air pipeline 25, and 2 is a vacuum tank also provided in the theater. 3 is a pressure regulator. 13 is a switching valve for cleaning.

In this embodiment, for example, the pressure regulator 6 controls the pressure in the outer chamber A of the teat cup 9 shown in FIG.
Adjust the pressure to KPa.

In the embodiment shown in FIG. 2, a transformer 14 is provided in the air piping that follows the sanitary trap 7 and receiver 8 of a one-sided low-line milking parlor.

Regarding the one-type low-line milking parlor, the same parts as in FIG. 1 or FIG. 8 are designated by the same number 41, and the explanation thereof will be omitted.

The transformer 14 has a pressure 94, as shown in FIG.
A guide rod 20 bent into an L-shape is provided on the rotary tube 16, and a valve body 18 is slidably attached to the base end of the guide rod 20. Reference numeral 19 denotes a spring that applies an elastic force to the sliding movement of the valve body 18.

The pressure regulating rotary tube 16 for adjusting the pressure of the valve body 18 (f-;i) is screwed onto the valve body 15, and the elastic force of the spring 19 is adjusted by the rotation of the pressure regulating rotary tube 16.

17 is a valve seat.

In this embodiment, the primary pressure is first regulated by the pressure regulator 6, and then the pressure in the milk feeding line 26 or the receiver 8 is regulated by the transformer 14.

For example, the pressure regulator 6 regulates the pressure in the outer chamber A of the teat cup 9 to 52 KPa, and the transformer 14 regulates the pressure in the inner chamber B of the teat cup 9 to 44 Kpa.

As described above, in the embodiment shown in FIGS. 1 and 2, any pressure difference between the inner chamber B and the outer chamber A of the teat cup 9 can be adjusted regardless of the various methods and installation methods of the apparatus.

The effect when the pressure difference (5 KPa in the above explanation) between the inner chamber B and the outer chamber A of the teat cup 90 is adjusted in this way will be described next. In FIG. 9, the liner 30 of the teat cup 9 is opened and closed about 40 to 50 times per minute.

First, when switching from the pine surge period (right side of FIG. 9) to the suction side, the pressure in the outer chamber A is adjusted to 52 KPa by the pulsator 12. Inner room B always has 44 KP.
A vacuum pressure is applied. and outer room A
As the vacuum pressure becomes 52 KPa, liner 3
0 expands due to its own elastic force, and at the same time is forced to expand due to the pressure difference of 8 KpaI between the outer chamber A and the inner chamber B.

From this point, the liner 30 is inflated into a nearly perfect circle as shown in FIG.

In this way, by inflating the liner 30 in a state close to a perfect circle and by the full pressure of the outer chamber A beyond the restoration to the original shape due to the elastic force of the liner 30 itself, the elastic force of the liner 30 against the teat of the dairy cow is reduced. ? Tightening force is relieved. (When the vacuum pressure in the inner chamber B and the outer chamber A are equal, it is the same as if the true pressure on the shellfish is not acting on the liner 50, so the teat is attached to the liner 30 itself, (It works due to the fatigue of the Kaka 3 liner, and does not have the effect of relieving the anchoring force as described above.) Next, the process of transitioning from the suction stage to the pine surge stage is as follows. When the pulsator 12 is activated and chamber A is opened to atmospheric pressure, first, the differential pressure of 8 KPa between the outer chamber and the inner chamber B gradually decreases, and as the differential pressure becomes zero, the nipple The liner 30 is gradually tightened.

Subsequently, due to the vacuum pressure in the same chamber B, the 4'ner 30
The nipple tightens as it is crushed, resulting in the state shown in Figure 12. (When the vacuum pressures in the inner chamber B and outer chamber A are equal, there is no process in which the differential pressure becomes zero, and the tightening force due to the elastic force of the liner 30 suddenly acts on the nipple).

In this way, by increasing the vacuum pressure (degree of vacuum) in the outer chamber A and the true total pressure (degree of vacuum) in the inner chamber B, the operation of the liner 30 against the nipple J becomes easy.

That is, in the transition from the pine surge stage to the suction stage, the liner 30 quickly opens from the state shown in Fig. 4↓12 to the state shown in Fig. 10 (to become a perfect circle). Then, during the transition from the suction period to the massage period, the nipple is gently tightened from the process where the differential pressure gradually becomes zero to tightening due to the elastic force of the liner 30. It is finally tightened by the vacuum pressure in the same chamber B.

In this way, the operation of the liner 30 from the pine surge period to the suction period, and from the suction period to the pine surge period, repeatedly performs gentle operations on the nipple.

On the other hand, even if the vacuum pressure in the interior chamber B is reduced, the vacuum pressure in the air pipeline is set independently. As a result, the operation of the pulsator 12 is ensured, and the liner during the transition from the pine surge stage to the suction stage! The operation in step 10 is carried out reliably by the vacuum pressure in the outer chamber A. The above explanation was made using one type of low-line milking parlor as an example, but the operation is the same for the other type. It is.

Incidentally, an example of the vacuum pressure of the milk feeding line and the air pipeline is as follows.

〔Effect of the invention〕

As detailed above, the pipeline type dairy cow milking device according to the present invention is designed to have different vacuum pressures on the milk feeding line side and the air pipeline side. The transition to the stage and pine surge became easier, and the prevention of mastitis could be further improved. Furthermore, the vacuum pressure during the suction stage can be adjusted to be lower than that of conventional high-pressure nitrogen, reducing the burden on the nipple due to the vacuum and further improving the prevention of mastitis.

In addition, the operation of the teat cup liner does not depend solely on the elastic force of the liner itself, but the vacuum pressure in the outer chamber facilitates the operation of the liner, ensuring reliable liner operation, thereby reducing liner fatigue. In addition to eliminating uncertainties in the operation caused by this, the liner could be operated reliably even if the vacuum pressure within the inner chamber fluctuated to some extent, and milking performance could be further improved.

In addition, the pressure of the air pipeline and milk feeding line can be adjusted independently according to the various types of milking equipment and installation conditions, so it can be applied to all milking equipment, and the pressure of each Since the pressure can be regulated independently, it is possible to ensure the operation of the pulsator and reduce the suction pressure in the inner chamber, which, together with the prevention of mastitis mentioned above, increases the prevention of mastitis, and
It has extremely significant industrial effects, such as being able to be applied to all methods.

[Brief explanation of the drawing]

Figures 1 to 3 are diagrams showing an embodiment of the present invention.
The figure is a system diagram of a milking device in which a transformer and a pressure regulator are provided on the milk feeding line side of a one-sided low-line milking parlor, and FIG. 3 is a longitudinal sectional view of the transformer. Figures 4 to 8 show conventional examples for each method. Figure 4 is a system diagram of a one-way packet milker system, Figure 5 is a system diagram of a one-way milker system that expresses milk directly from a milk can, and Figure 6 is a system diagram of a one-way milker system. System diagram of pipeline system. FIG. 7 is a system diagram of a recorder, milking, and parlor system, and FIG. 8 is a system diagram of a low line, milking, and parlor system. Figures 9 to 12 are explanatory views, with Figure 9 being a longitudinal cross-sectional view of the teat cup, Figure 10 being a cross-sectional view showing the liner inflated into a perfect circle, and Figure 11 being the liner. The 12th cross-sectional view showing the elliptical swollen state is a cross-sectional view of the liner in the pine surge stage. 9... Teat cup, 25... Air vibe line 26... Milk feeding line, 29... Shell, 30...
liner. A...Outer room, B...Inner room. Figure 9 29 Shell z Figure 10 Figure 11 Figure 12 x Pebi 30

Claims (1)

[Claims] A liner is provided inside the shell, and a feeding line is connected to the inner chamber of the teat cup, which has an inner chamber formed by the liner and an outer chamber formed by a space between the outside of the liner and the inside of the shell. On the other hand, in a pipeline-type dairy cow milking device comprising a vacuum air pipeline connected to the outer chamber, a pressure difference is created between the milk feeding line and the air pipeline connected to the inner chamber and the outer chamber, respectively. A pipeline type dairy cow milking device characterized by: