JPH0379962B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for measuring milk from a dairy cow during milking, comprising a measuring container, a supply valve for supplying milk into the container, and a drain valve for discharging milk from the container. This relates to a milk meter for measuring the weight of milk that comes out.

Milk scales that directly measure the weight of milk are known, but they are not accurate. Such milk meters are for example:
It also operates using a cup that can be tilted. Milk meters are also known that indirectly measure weight by measuring volume. When using such a milk meter, consideration must be given to the fact that, due to the milking process and the flow of milk through the milk meter, air is absorbed into the milk and therefore the specific gravity of the milk changes compared to its static state. Must be.

The object of the invention is to provide an accurate milk meter of the type that operates by direct weight measurement.

According to the invention, this object is achieved by providing a vertically movable guided elongated float in the measuring container, the upper end of said float being fixed in the measuring container and above said upper end. A milk meter of the type mentioned at the outset is adapted to cooperate with a switch which, when in contact with the upper end of the float, closes the milk supply valve and opens the milk discharge valve. It is achieved by doing so.

Calculations show that the height position of the float in the measuring container, for example relative to the position of the switch, depends virtually only on the weight of milk received in the measuring container. Irrespective of the specific gravity of the milk, which varies primarily depending on the amount of air absorbed into the milk, there is always the same weight of milk in the measuring container at a certain switch-on position of the float.

The invention further provides at least one milk outlet valve having a milk outlet valve.
It also relates to a sampling device suitable for use with an intermittently operating milk meter of the above-mentioned type having two measuring vessels.

Milk meters for measuring the amount of milk produced by dairy cows are already known, for example from Dutch patent applications no. 7908184 and no. 8001991. These milk meters operate intermittently. That is, an electrical signal is generated each time the measuring container is filled with milk, after which the measured amount of milk is discharged into a receiving tank, usually through a valve at the bottom of the measuring container.

It is common practice to periodically take samples of milk to determine the fat and protein content of the milk so that the quality of the milk obtained can be tested. It is also an object of the invention to provide a sample collection device that can be connected to one of the above-mentioned intermittently operating milk meters, so that the sample can be taken quickly and easily.

According to the invention, this object is achieved by providing a tubular holder at the bottom of the milk meter below the milk outlet valve, a part of said holder extending upwardly from the bottom of the milk meter; This is achieved by having a specimen receiving chamber at its upper open end with an outlet that can be closed by a bottom valve.

Each time the milk outlet valve of the measuring container is opened, a portion of the milk flowing out of said container is received by the sample receiving chamber of the tubular holder. Most of the milk received in the holder flows over its rim and out of the holder. A portion occupying a predetermined proportion, for example 1.5 cm ³ , remains in the holder. This remaining volume is removed by opening the bottom valve of the receiving chamber into a specimen vial to be connected to the lower end of the holder.

The upper edge of the specimen receiving chamber is extended upwardly by a further wall section by substantially the height of said receiving chamber, and a through hole is provided at the transition point between said further wall section and said upper edge. is preferred. Due to the fact that the milk falls to the bottom of the receiving chamber, some of the milk moves upwards along its walls and leaves the receiving chamber, thus leaving the receiving chamber after the measuring container has been emptied. There is a possibility that this will not be completely satisfied. In the preferred embodiments described above, this is avoided.

When the bottom valve of the specimen receiving chamber is a valve with a valve stem extending above the upper edge of the specimen receiving chamber or above another wall part, the milk outlet valve of the measuring vessel may be provided with a downwardly directed projection. , it is possible to mechanically actuate the bottom valve of the receiving chamber. In order to transfer the milk from the receiving chamber of the sample holder to the sample bottle, the tubular holder is provided with a connection at its lower end, by means of which several samples of the same milking can be transferred to a mixing beaker. From the beaker, the specimen is transferred to a specimen bottle.

In order for the obtained milk specimen to be more accurately representative of the milk from which it was taken, if the specimen is always of exactly proportionate proportion to the content weight of the measuring container,
It would be convenient.

Usually, the last part of the milk from one milking does not completely fill the measuring container. If the sample obtained at this time is a constant amount of milk, when the measuring container is not completely filled, this amount of sample is no longer a proportional part of the content weight of the measuring container, and therefore: The last content of milk in such a measuring container will be over-represented among the total samples in the mixing beaker. Moreover, said last part of the milk of one milking contains a higher proportion of fat than the main part, and as a result some of the fat proportion determined on the basis of the sample of the mixing beaker. This will cause an error.

The even higher accuracy of the sample contemplated here is achieved by providing a sample collection tube at the bottom of the milk meter located below the milk outlet valve and extending upwardly from said bottom, the upper end of said sample collection tube being located at the bottom of the measuring container. This is realized by configuring the milk meter in such a way that it is connected to a sampling hole passing through the milk meter, said sampling hole being opened and closed simultaneously by means of a discharge valve at the bottom of the measuring container.

The sampling hole at the bottom of the measuring container may be controlled by another small valve that is actuated electromagnetically or by another small valve connected to the valve stem of the milk drain valve. The construction becomes simpler if the sampling hole is provided in the valve seat of the discharge valve and is closed by the same valve when the discharge valve itself is closed. The connection between the sampling hole and the upper end of the sampling tube is preferably a channel-shaped tube that is open at the top and extends substantially horizontally. In this way, there is little resistance for the washing liquid to float, so that the sample collection tube is completely cleaned when the milk meter is washed after use.

In connection with this cleaning, the discharge end of the connecting tube extends freely into the upper end of the sample collection tube, and said sample collection tube is removable to the bottom of the milk meter, for example by means of a threaded connection. Obviously, it would be equally advantageous if it were provided in this way.

When there are two measuring vessels for milk and two outlet valves for milk, the structure is further simplified if their connecting tubes have a common outlet end towards a single sampling tube. Ru.

An elastic membrane is fixed in the inner wall of the specimen bottle at half its height, which membrane engages the inside of the upper and lower halves of the specimen bottle in its two extreme positions, and the bottom of the specimen bottle. An advantageous embodiment of the specimen bottle is obtained if the specimen bottle is provided with a connection hole for connection to a pressure or vacuum source. With the specimen bottle, the milk is not spoiled while filling and removing milk from the specimen bottle, while only half of the specimen bottle is in contact with the milk;
It allows faster cleaning of specimen bottles.
Cleaning can also be accomplished using detergents by actuating the membrane with pressurized fluid.

If it is not desired to collect a sample while the milk meter is in use, the tubular retainer may be provided with an external threaded or bayonet catch or similar structure so that the retainer is secured to the bottom of the milk drain of the milk meter. Once removably connected to the milk meter, the specimen holder can be removed from the milk meter. In that case, the specimen collection hole may be closed with a screw or bayonet stopper.

The invention further relates to an improvement in the above-mentioned milk meter, which operates to measure the weight of milk by means of a float, in which the milk supply tube or other part in the measuring container is This is an improvement that compensates for the effects of changing.

The invention will now be explained in more detail with reference to the accompanying drawings, which schematically illustrate embodiments of a milk meter according to the invention.

The illustrated milk meter includes a measuring container 1, above which a milk supply pipe 2 is provided. The supply pipe 2 is closed at its lower end by a milk supply valve 3 provided on an operating rod 4, which at its lower end has a milk discharge valve 5 located at the bottom of the measuring container 1. I support it.

An elongated float 6 is provided vertically inside the measuring vessel close to its wall so that it can move vertically guided by a guiding mechanism, such as the ring-shaped mechanism 7, 8 shown, connected to the wall. It's summery.
A magnet 9 is provided at the upper end of the float 6, which magnet is adapted to cooperate with a Hall effect switch 10 fixed above the float in the milk meter. An abutment stand 11 is provided at the bottom of the measuring container below the float 6, by which the float is supported when the measuring container is empty.

The illustrated milk meter operates as follows. That is, at the lower position of the float 6 shown in FIG. 1 where the float is supported by its abutment base 11, an actuation signal is generated to the valve stem 4 by a control device (not shown). , whereby the valve stem 4 is moved downwards, so that the milk supply valve 3 is opened and the milk supply valve 5 is closed. If the milk now flows towards the supply pipe 2 as indicated by the arrow 12, it flows into the measuring container 1 through the bottom of the supply pipe 2, which is already opened by the valve 3, and the bottom valve 5 is closed, so that they are collected in the measuring container 1.

The milk level at any given state is indicated by reference numeral 13 in FIG. When the milk in container 1 reaches a predetermined height, float 6
begins to float and moves upward toward switch 10.

In FIG. 2, magnet 9 has reached a position where it contacts switch 10. At that moment, the milk was level 14.
has reached. In order to make contact with the magnet 9, the switch 10 generates a control signal, whereby the valve stem 4 is moved upwards, the supply valve 3 is closed and at the same time the discharge valve 5 is opened. This position is shown in FIG. 3, which also shows that milk now flows out of the measuring container as indicated by arrow 15, while the milk level is at the second level.
It has been slightly lowered from level 14 shown in the figure to level 16 shown in FIG. Apart from the signal generated by the switch 10 for moving the valve stem 4, the switch 10 also generates a signal that a predetermined weight of milk, for example 400 grams, has been received in the container 1. This signal is recorded by a counter, not shown, and is added to several already recorded quantities of equal milk weight.

As already mentioned, when the float reaches the position shown in FIG. 2, a constant weight of milk is present in the container 1, independent of the height of the level 14. Typically, the height of level 14 varies depending on the amount of air absorbed by the milk during milking or flowing through the milk meter. This air leaves the milk at the top of the milk volume during the measurement, so that the air content also changes as a function of time, for example during filling.

The fact that the weight is constant is explained as follows. Let us assume that the float 6 has a cross-sectional area O and the measuring container 1 has a cross-sectional area A. As soon as the float floats on the milk, it has an immersion depth h at any given time, for example as shown in FIG. If the average weight of milk at the same time is s, then the equation K=hOs holds true for the upward force K acting on the float. Since this float is floating, this force K is equal to the weight G of the float.

If the height of the level 14 of FIG. 2 in the container 1 is represented by H, the formula holds that the measured milk weight is (HA-hO)s=HAs-hOs.

Since the weight of the float is constant, it is clear from the above that hOs always has the same value.

If the height between the lower end of the float 6 and the bottom of the measuring container 1 is expressed as c, then since the switch 10 is in the fixed position, the value c at the measuring position in FIG. 2 will also be constant, Therefore, the following formula holds.

HAs=(h+c)As=hAs+cAs Since h×s is constant, hAs is also constant. However, since s is not constant, the term cAs is not constant. However, due to the elongated or rod-like form of the float 6, which extends over virtually the entire filling height of the container 1, h is large compared to c;
The term cAs is so small that it can be ignored compared to hAs. Moreover, the term cAs is responsible for the specific gravity of the milk in the lower part of the container below the float.
Since air is constantly moving upwards in container 1,
At the moment when the measurement is taken, most of the air has already left the lower part of the container, so that the specific gravity of the milk there is close to the specific gravity of milk without air, for example effectively 1.03. It has become a value.

Therefore, in summary, it can be said that the weight measured by this milk meter is approximately constant regardless of the amount of air absorbed by the milk.

The Hall effect switch 10 described above may be replaced by other known switch mechanisms such as inductive measurements, beam-of-light measurements, infrared measurements, variometer measurements, capacitive measurements or other methods of measurement. It's obvious that it's good too.

Although it was mentioned above that valves 3 and 5 are mounted on the same valve stem 4, this is not necessary. The valves may be actuated separately by individual signals or may be actuated one after the other, in the latter case for example first valve 5 is closed and then valve 5 is closed. 3 will be opened.

It is desirable to extend the milk supply tube 12 into the measuring vessel such a distance that the lower end of the milk supply tube 12 is in the milk when the milk reaches its highest level (FIG. 2). If you do that, magnet 9
When the float approaches the switch 10, the surface of the milk on which the float is floating is quiet without ripples, and therefore,
There are no errors due to waves on the milk surface as occur while the milk falls from the end of the feed tube onto the milk surface (FIG. 1).

The milk meter shown in FIG. 4 has two measuring containers 1, each of which is provided with a sampling device. Since their arrangement is the same for both measuring vessels, only one will be discussed.

A milk supply pipe 2 opens into the measuring container 1 and extends downwardly from the milk supply sump 40 so that the milk coming out of the cow is collected by a hose (not shown) which can be connected to the supply port 41 . It is fed into a feed reservoir 40. The lower end of the milk supply pipe 2 is connected to the valve stem 4
It is closed by a milk supply valve 3 provided above. This valve normally has a vacuum connection 44 and an atmospheric connection 4.
a spring-loaded piston 4 contained in a cylinder pneumatically actuated through 5;
It can be operated by 2. The bottom hole of the measuring container 1 has a milk outlet valve 5 mounted on the same valve stem 4 . When the milk supply valve 3 closes the milk supply pipe 2, the milk discharge valve 5 is open (the fourth
right side of the figure), when one-way valve 3 is open, valve 5
closes the bottom hole of the measuring vessel (left side in Figure 4).
The milk supplied by the supply pipe 2 flows into the measuring container 1 if the valve 3 is open.

To measure the amount of milk, the milk meter makes use of the milk meter principle described at the beginning of this specification. Using that principle, the weight of milk is measured by float. Such a float is represented by reference number 46 in Figure 4. This float is further improved compared to that shown in FIGS. 1-3. As soon as the milk reaches the lower end of the feed tube 2, the measured milk volume is no longer equal to (HA−hO)·s;
The weight is reduced by an amount corresponding to the volume placed in the milk of the aforementioned feed tube. In this regard, please refer to FIG. According to the invention, this is accomplished by a closed tube or other prismatic body 47 extending from the bottom of the measuring vessel to the lower end of the supply pipe 2 and having a cross-sectional area equal to the supply pipe 2 provided in the measuring vessel. be compensated for.

Another solution is shown in FIG. 9, which is also illustrated in FIG. In that method, the float 46 is provided with a step 48, that is, it has a difference in diameter, and this difference causes a difference in the cross-sectional gap of the float corresponding to the cross-sectional area of the supply pipe 2, O ₁ −O ₂ . It's summery. The difference in diameter is that the float is the second
It must be at the same height as the lower end of the supply pipe 2 when in the measuring position corresponding to the figure.

The last part of milk obtained from one milking is
Normally, the measuring container 1 will not be completely filled, so the float 46 will not float and will not send a signal through the switch to the counter representing its volume. Therefore, electrodes 6' are provided on the wall of the measuring container at regular intervals from each other, the milk being the lowest electrode 6'.
The amount of milk in the measuring container is, for example, effectively 100 grams when . If the milk level then rises and reaches the second electrode 6' from bottom to top, there will be
There is a certain amount of milk, 200 grams. When the milk level reaches the top electrode 6', a certain amount of milk of 400 grams is present in the measuring container. Each electrode is connected to electronic equipment, not shown, such that each time milk reaches each electrode, the electronic equipment sends a signal to the counter that an additional 100 grams have been measured.

When float 46 actuates its switch, the electronics move valve stem 4 upwards so that valve 3 closes and valve 5 opens. At this time, a certain weight of milk in the measuring container flows into the milk collection chamber 7 of the milk meter through the hole at its bottom. From there the milk passes through holes in the bottom of this chamber to a receiving tank (not shown).

According to the invention, a specimen holder 8 is provided at the bottom of the milk collection chamber 7 below each measuring container 1 . This retainer is, in the illustrated embodiment, an open-topped cylinder with an external thread 9, by means of which the retainer is located slightly above the valve 5 from the bottom of the collection chamber. It is designed to be screwed into the bottom of the milk collection chamber so that it extends downward. The retainer 8 has an outlet 10 at its lower end, which is shown here as a separate part screwed into the bottom to facilitate cleaning of the tubular retainer.

A specimen receiving chamber 11 is formed at the upper end of the holder,
Its receiving chamber 11 is closed at its lower end by a bottom valve 12. The valve has a valve stem 13, which in this embodiment is guided by two guide members 14, for example consisting of an inner ring and an outer ring connected to each other by a radial web. You will be guided accordingly. Each guide member 14 is fixed in position by a Seeger clip 15. The compression spring 16 is connected to the upper guide member 14
and the valve 12, the spring biases the valve 12 into its closed position.

As mentioned above, the specimen receiving chamber 11 is extended at its upper end by another wall section 17, and between the walls of the receiving chamber 11 and the wall 17 a through hole 18 is provided, so that the milk can be , does not reach a level in the upper part of the cage that is higher than the lower edge of said hole 18.

In the illustrated milk meter, the valve stem 4 extends downwardly beyond the valve 5, and a protrusion 19 is formed on the underside of the valve 5.
For this purpose, it is also possible to mechanically actuate the bottom valve 12 of the specimen receiving chamber 11 by means of its projection 19, if the valve stem 14 of the valve 12 is also extended upwardly as a projection 20 beyond the valve 12. The projection 20 preferably ends slightly above the upper end of the further wall portion 17. In the milk meter shown, the outlets 10 of both specimen holders are connected to the mixing beaker 2.
It is connected to the supply port 21 provided on the upper lid 22 of No. 3 through a hose (FIG. 5). The mixing beaker 23 has a volume such that a large number of samples can be collected therein. These multiple samples are mixed in a beaker such that the early milking sample and the late milking sample are mixed, so that the contents of the mixing beaker represent an average milk composition.

It can be seen from FIG. 6 that the bottom of the mixing beaker is provided with a drain hole 24 with a spring-loaded valve 25. This discharge hole 24 becomes at its lower end a wider hole 26 into which the neck 27 of the specimen bottle 28 is inserted.An elastic membrane 29 is inserted into the inner wall of the specimen bottle at half the height of said specimen bottle. The elastic membrane engages the inside of the upper and lower halves of the specimen bottle, respectively, in its two extreme positions. In the illustrated embodiment, the specimen bottle 28 has two parts: an upper part 3;
0 and a lower part 31, which can be threadedly engaged at 32 and at the same time tighten an elastic membrane 29 fixed to one of said two parts. The specimen bottle 28 has a narrow milk supply hole 33 in the neck 27 and a hole 34 in the bottom of the lower part 31. A connection circuit to a vacuum source is connected to its hole 34, so that the elastic membrane 29 is pressed to its lower limit position and at the same time the milk flows into the mixing beaker 2.
3 through hole 33 into the upper chamber of the specimen bottle. At this time, the specimen bottle is separated from the mixing beaker and stored. In the laboratory, a connection circuit to a source of pressurized air is connected to the hole 34, so that the elastic membrane occupies its upper limit position as shown in FIG. The milk that has warmed up inside the body is put into the test tube through the hole 33. A groove 35 is formed on the outside of the sample bottle 28, and a magnetic strip 36 is inserted into the groove, and all the data of the milked cows and the date of milking are recorded on the magnetic strip. recorded.

The operation of this sampling device is as follows. That is, when the measuring container 1 of the milk meter is opened by opening the valve 5, milk flows into the milk collection chamber 7. A small portion of the milk is received by the tubular holder 8, and after all the milk has flowed out of the measuring container 1, a proportion of the milk equal to the volume of the sample receiving chamber 11 is retained. It remains in container 8. The remaining part of the milk leaves the milk collection chamber 7 through the milk meter outlet 37. At this time, if the valve 5 of one measuring container is closed and the valve 5 of the other measuring container is opened at the same time, the protrusion 19 of the valve stem 4 of the one measuring container will touch the protrusion 20 of the valve 12 of the specimen holder 8. When pressed, the milk flows from the specimen receiving chamber 11 through the milk-passing guide member 14 to the outlet 10 of the holder and from there to the connected mixing beaker 23. The mixing beaker 23 is provided with two connections 21 for both measuring containers of the milk meter shown in FIG. Furthermore, said mixing beaker 23 has a port 38 communicating with the atmosphere for the exhaust air from the mixing beaker to be forced out by the incoming milk.

After shaking the mixing beaker, sample bottles are filled from the mixing beaker as described above for laboratory testing, and when filled, said sample bottles are representative of the total volume of milk. It will contain the specimen.

Compensation in the manner illustrated in FIGS. 8 and 9 is generally accomplished by ensuring that the milk-containing cross-sectional area is the same at each level. This can also be achieved by locally narrowing or widening the measuring container, thereby making it possible to compensate for all the components installed in the container.

Apart from the compensation for equalizing the milk-containing cross-sectional area at each level, it is important to note that the milk present below the level of the lower end of the float 6 at the measuring position has the average specific gravity of the remaining part of the contents of the measuring container. A compensator is also provided to realize what is measured as being. This compensator then extends from the bottom over a height H which is the maximum milk level;
It has a volume equal to cA.

Bottom valve or milk drain valve 12 shown in FIG.
may have an inverted conical shape so that it closes when moved downward and opens when moved upward. The valve seat of the bottom valve 12 of the specimen holder must then be on the underside of the valve, contrary to FIG.

10 and 11 illustrate a variant of the milk meter described above. In this modified embodiment, the specimen holder 8 is replaced with the following structure.

Valve seat 50 of milk discharge valve 49 at the bottom of measuring container 1
A through hole 52 with a small diameter is provided in the through hole 52, and the lower end of the through hole can be connected to a connecting pipe 53. This connecting tube 53 first extends vertically from the sampling hole 52 for a short distance and then horizontally;
It communicates with the upper end of the specimen collection tube 51. In the illustrated embodiment, this sampling tube 51 is connected to the bottom of the milk meter by a threaded connection, with an outlet extending downwardly from said bottom to which a hose from a sampling beaker is connected. . In the embodiment shown, the milk meter comprises two measuring containers 1 and therefore likewise two sampling holes 52 and two connecting tubes 53. The two connecting tubes are specimen collection tubes 51
A discharge port 54 is joined at their discharge ends near the upper end to form a unitary structure, fits inside the upper end of the specimen collection tube 51, and extends so as to be freely movable within the upper end of the specimen collection tube 51. have. Furthermore, these connecting pipes 53 are in the form of a channel whose upper side is open in the horizontal part. As a result, it is convenient when cleaning the milk meter.

Each time the valve 49 is opened, a proportion of the milk contained in the measuring container 1 is received through the sampling hole 52 into the mixing beaker 23. Furthermore, even when the measuring container 1 is only partially filled at the end of milking a dairy cow, a proportionate amount of milk is received in the beaker, so that the aforementioned final milk volume is included in the total milk sample. Too many people are not represented.

[Brief explanation of drawings]

Figure 1 shows the milk meter during filling, Figure 2 shows the milk meter when the float is in position to activate the switch, Figure 3 shows the milk meter during emptying, and Figure 4 shows the milk meter during sample collection. 1 is a vertical cross-sectional view of a milk meter with a device,
FIG. 5 shows a mixing beaker, FIG. 6 is a sectional view of a specimen bottle connected to the lower end of the mixing beaker, FIG. 7 shows a specimen bottle, and FIG. 8 shows a float and a compensator. 9 schematically shows a milk meter with compensated float; FIG. 10 is a schematic vertical section through the lower end of a variant of the milk meter; FIG. Figure 11 is line XI in Figure 10.
FIG. 2 is a horizontal cross-sectional view taken along -XI. 1... Measuring container, 2... Milk supply pipe, 3... Milk supply valve, 4... Valve stem, 5... Milk discharge valve, 6,
46...Float, 9...Magnet at the upper end of the float, 10...
Hall effect switch.

Claims (1)

[Claims] 1. The weight of milk that leaves a dairy cow during milking, provided with a measuring container, a supply valve for supplying milk into the container, and a discharge valve for discharging milk from the container. A milk meter for measuring milk, comprising an elongated float 6 guided so as to be movable in the vertical direction.
is provided in the measuring container 1, and the upper end 9 of the float is
operates in cooperation with a switch 10 fixedly mounted on the measuring container above its upper end, said switch closing the milk supply valve 3 and opening the milk discharge valve 5 when it comes into contact with the upper end of the float. A milk meter at a store. 2. Sampling device suitable for use with an intermittent milk meter according to paragraph 1, comprising at least one measuring container with a milk drain valve, the tubular holder 8 having a milk drain valve. 5, a part of the holder extends upward from the bottom of the milk meter, and has a bottom valve 1 at the upper open end.
1. A specimen collecting device characterized in that it has a specimen receiving chamber 11 with an outlet that can be closed by 2. 3. The upper edge of the specimen receiving chamber 11 is extended upwardly by a further wall portion 17 by substantially the height of said receiving chamber, and a through hole is provided at the transition point between said further wall portion 17 and said upper edge. 3. Device according to claim 2, characterized in that 18 is provided. 4. The bottom valve 12 of the specimen receiving chamber 11 is a second valve having a valve stem 13 extending above the upper edge of the specimen receiving chamber 11 or above another wall portion 17. The device according to paragraph 3 or paragraph 3. 5. Device according to one or more of the preceding clauses, characterized in that the tubular holder 8 is provided with a connection port 10 at its lower end. 6. The tubular holder 8 is provided with an external thread 9 or bayonet catch or similar mechanism, by means of which the holder can be removably connected to the bottom of the milk drain 7 of the milk meter. Apparatus according to one or more of the above. 7 A specimen bottle suitable for use with the device according to one or more of paragraphs 2 to 6, characterized in that the specimen bottle 28 has an elastic membrane 29 in its inner wall half its height. The membrane is fixed to the upper half 30 or the lower half 31 of the specimen bottle in its two extreme positions.
A specimen bottle, characterized in that a connecting hole 34 is provided at the bottom for engagement with the inside of the bottle and for connection to a pressure or vacuum source. 8. In or on the measuring vessel one or more compensators, i.e. cross-sectional narrowings or cross-sectional widenings, are provided or the cross-sectional area of the float is 2. The milk meter according to item 1, characterized in that a step portion is provided. 9 characterized in that a compensator is provided along the maximum filling height (H) of the measuring container 1 in order to compensate for the volume (cA) of the part of the container below the float in the uppermost position of the float 6. A milk meter as described in paragraph 1 or paragraph 8, where 10 A sample collection tube 51 is provided at the bottom of the milk meter located below the milk discharge valve 49 and extends upward from the bottom, and the upper end of the sample collection tube is connected to a sample collection hole 52 passing through the bottom of the measuring container. Milk meter according to claim 8 or 9, characterized in that the sample collection hole is opened and closed at the same time using a discharge valve 49 at the bottom of the measuring container. 11 The sample collection hole 52 at the bottom of the measurement container is the discharge valve 4.
11. The milk meter according to claim 10, wherein the milk meter is provided on the valve seat 50 of No. 9 and is closed by the discharge valve itself when the discharge valve itself is closed. 12. Clause 10 or 11, wherein the connection between the sampling tube 52 and the upper end of the sampling tube 51 is a channel-shaped tube 53 that is open at the top and extends substantially horizontally. Milk meter as described in section. 13 The discharge end 54 of the connecting pipe 53 is the specimen collection pipe 51
Clause 12, characterized in that the sampling tube 51 extends freely into the upper end and is removably mounted on the bottom of the milk meter, for example by means of a threaded connection. Milk meter as mentioned. 14 Two milk measuring containers and two milk discharge valves 4
9 are provided, their connecting pipes 53
is a common discharge end 5 towards a single specimen collection tube 51
13. The milk meter according to claim 12 or 13, characterized in that the milk meter has the following characteristics: