DD286283A5 - DEVICE FOR STANDARDIZING MILK SAMPLES - Google Patents

Abstract

The invention relates to a device for normalizing milk samples. Their field of application lies in the milking and dairy technology, in which milk samples of any size are to be normalized automatically. The aim of the invention is to provide a device which minimizes the time required for the performance of the milk yield control by filling volume-equivalent milk samples. The technical task consists in the connection of a multifunctional removal device and a selbsttaetig switching valve with a standing under vacuum sample collection space. According to the invention, the object is achieved by the valve automatically separating the sample collection chamber from the milking system. A small portion of the milk collected in the sample collection chamber reaches the metering chamber of the removal device. The milk accumulates through the action of capillary forces at the outlet to the sample bottle attachment piece. They balance the weight of the fluid column. The standardized sample is filled by emptying the dosing chamber into a test tube. Fig. 2 {milk performance control; Gemelksprobe; Normalizing milk samples; Milking and dairy technology; milking system; Removal device; Valve; Sample collection chamber; metering chamber; capillary forces; Fluessigkeitssaeule; Probeflaschenanschluszstueck; Sampler}

Description

Field of application of the invention

The invention relates to the field of fluid technology. The special field of application lies in particular in the mekk- and dairy technology, in which milk samples of any size are to be standardized automatically.

Characteristic of the known state of the art The monthly determination of the content of milk content of single dairy products is from breeding and offspring

offered for business reasons and international standard.

As a reliable and simple method of controlling milk content, the all - day control is neglected

proportionate sampling known. The milkmaid one day is examined by determining the content of the ingredient

Milk is assumed to be of constant sample volume, i. H. from the evening and morning meats will be, without Consideration of the respective Gemelksmonge, samples of the same volume ontnommen. The milk sampling from glass recorders uses scaled samples to fill samples Syringes. The contents of the recorder are first mixed with the intake of atmospheric air and the milk sample is passed through

sucked a withdrawal nozzle in the resaurant! The standardization of the sample volume is performed by the milk tester

Pushing out the syringes? .. visual quality control. The disadvantage is that the sampling and normalization must be done manually and no Mechanisierungsmöglichkeit

given is.

Facilities suitable for automatic milk sample homogenization combine a collection container with one Probeantnahmeeinrichiung. Are known Abpumpeinrichtungen that refer to the piston pump principle samples from a collection and

measure as a function of the piston stroke. The pumping device can serve as a sample container (DE 2,632,357,

US 3,782,197), or it is connected to a replaceable sample vial, which is filled via an outlet valve

(DE 2,655,711).

The disadvantage is that these devices require complicated designed valve and sealing elements. An important technical solution for the volumetric measurement of milk samples is in the DE patent and Offenlegungsschrift 2,648,330 (analogous to FR 2,357,884) published: The total sample is collected over the milking time in a collection container and for sample standardization by means of a Mixing mechanism mixed. An axially displaceable in a tube piston, over a certain length in diameter

is reduced, immersed in a final position in the collection milk. In the opposite end position piston and tube form an annular chamber of defined volume, which fills with milk. The chamber is via a Probeabführleitung with a

Connected to a sample collection vial, in which, depending on the number of piston cycles, the volumetric milk sample

is dosed.

The defect that adheres to this standardization is in their complicated mechanics, especially for Probedosierung

and blending, as well as residual milk removal. Another, with similar shortcomings,

Sample dosing with plunger is described in US Patent 4,147,062. Object of the invention

The object of the invention is to provide a milk sampling equipment which minimizes the time required to perform the milk yield control by filling equal volume milk samples and eliminates the disadvantages of other technical solutions.

Explanation of the essence of the invention

The technical problem, which is solved by the invention: The technical object, which is based on the invention, consists in the connection of a multifunctional removal device and an automatically switching valve with a standing under milking vacuum Träumeammeiraum.

According to the present task is solved by the sample collection room is connected to the milking system via a pressure difference-dependent switching valve and the sampling device an inlet port and an outlet

having a defined diameter. The diameter of the inlet opening is so large that a milk flow is ensured unhindered in the Entnahmekammor. The diameter of the spout is to be kept so small that the Kapillarkräfte thereby becoming effective prevent premature leakage of the milk from the dosing.

AusfflhrungsbMsplel The invention will be explained in more detail below using an exemplary embodiment. The accompanying drawings show Fig. 1: * Dio classification of the device for normalization of milk samples (standardization device) in the milking system; 2 shows the standardization device after the sample has been standardized or during the residual milk return to the milking system; 3 shows the standardization device during the mixing of the collected milk or during the filling of the

Dosing chamber B of the removal device 3; Fig.4: the norm! uungseinrichtung during milking and during clamping of the metering chamber. 5

The device for normalizing milk samples consists of a sample collection chamber 1 with valve 2 and a Extraction device 3 with piston 8 and dosing chamber 5 (FIGS. 2 and 3). It is about a connector 15 with the Milchmengenmeßeinrichtung 11 of the respect ve ^s! Strength milking connected (Fig. 1). To collect the total vegetable sample, the valve 2 is opened, the valve element 7 releases the valve seat. The Inlet opening 4 of the removal device 3 is closed by the piston 8. It is located approximately in the middle position (FIG. 4). After milking, the piston 8 for mixing the collected milk and for normalizing the milk sample in the End position moves, in which the metering chamber 5 of the removal device 3, the required normalization volume

(= Maximum volume) (Figure 3).

Through a vent 9 or via the sample bottle fitting 10 air flows with atmospheric pressure in don Sample collection room 1, swirls the collected milk and destroys the possible stratification of the milk ingredients. The Mixing ends automatically when the pressure difference between the Milchmengenmeßeinrichtung 11 and the Probesammeiraum 1 causes a sufficiently large force on the valve element 7. The valve element 7 presses in the Valve seat and separates the sample collection room 1 from the milking system. A residual vacuum in the sample collection chamber 1 is after closing

of the valve * canceled by the further supply of atmospheric air. Between sample collecting chamber 1 and metering chamber 5, the pressure is balanced, and the metering chamber 5 is filled with milk. It forces the air out of the dosing chamber 5, which over the

Vent opening 9 and the sample bottle fitting 10 escapes. The inflowing into the metering chamber 5 * * milk accumulates at the outlet 6 to the sample bottle fitting 10, since the Surface tension of the milk relative to the atmospheric air causes capillary forces that correspond to the weight of the milk column To keep balance. For milk sample filling in the sample tube of the piston 8 must be moved to the opposite end position. The Surface forces of the milk-air transition are overcome and the normalized sample flows in Milk sample vial 12 off. If the piston end position is reached (FIG. 2), a passage opening 13 connects the sample collecting space 1 with the piston 8

the milk line 14 (Figure 1). As a result, the sample collecting chamber 1 is supplied with milking vacuum on the outlet side, so that the

Residual milk from the sample collection room 1, at the same time for filling the normalized milk sample in the milk line 14th

is sucked off. The pressure in the sample collection chamber 1 drops to the level of the milking vacuum, and the valve element 7 falls out of the valve seat due to its own mass. The separation between Milchmengenmeßeinrichtung 11 and Sampling 1 is canceled, and the piston 8 of the sampling device 3 can be moved to the re-sampling in the middle position

The cycle

- collecting the total milk sample;

- mixing the collected milk;

- filling the dosing chamber 5 of the sampling device 3 (sample formation);

Milk sample filling in the test vial 12 and

- Rostmilchrückführung in the milk line 14 may e. do not do it again.

Claims (1)

Device for normalizing milk samples, consisting of a sample collecting space with differential pressure-dependent switching valve and a removal device with piston and dosing defined maximum volume, characterized in that the sample collection chamber (1) is connected to the milking system with the valve (2) and that the removal device (3) an inlet opening (4), which ensures the flow of the collecting milk into the Dosie / chamber (5), and an outlet (6) whose diameter corresponds to capillary forces which are equal to the weight of the milk column located above. For this 4 pages drawings