DE102005040275A1 - Fluid-tight hose connection in the milking technique as well as hose, in particular milk hose and pulsator hose - Google Patents

Abstract

To form a fluid-tight hose connection in milking technology between a connection piece and an end region of a hose, it is proposed that at least one holding element and at least one holding contour designed to correspond to the holding element are provided. The holding element can be formed on the end region of the hose, while the holding contour is provided on the connecting piece.

Description

Of the The invention relates to a fluid-tight hose connection in the milking technique as well as on a milk hose and a Pulsatorschlauch.

To the Milking systems are used for milk-giving animals, which can be different configurations. The milking process as such is carried out by means of teat cups, which are attached to the teats of the Animal are attached. A teat cup has a teatcup liner, which corresponds to the pulsator frequency with negative pressure and atmospheric pressure is charged. For this purpose, the milking cup with a Pulsatorschlauch connected. The milked milk gets out of the milking cup over one Milk hose removed.

There are known milking systems in which each milk hose is connected to a milk collecting piece. For this purpose, the milk collecting piece on nozzles over which the milk hose is slipped. The connecting piece has an obliquely cut end. The milk tube is clamped at the obliquely cut end as the teat cup hangs freely from the milk collecting piece. Such an arrangement is for example by the DE 34 29 428 A1 known.

Thereby, that the milk hose changing bending loads on the obliquely cut End of the milk supply is exposed, subject to the hose a fast aging. A significant problem is also that it to damage the short milk tubes by sudden loads on obliquely cut end of the nozzle can come.

Of the Milk hose adheres to the neck by friction adhesion. Will the Milk hose pushed on greasy or dirty surfaces, this reduces the liability here. There is a risk that when milking the milk hose slips off the nozzle. One time When milking slipped milk hose is on the neck, hardly again functionally reliable. The liability is essentially due to the material pairing nozzle / milk hose determines, so that the Freedom of choice of construction materials is limited.

One not insignificant problem with such an embodiment of the Hose connection can be seen in that a complete cleaning can only be done with a considerable effort. It exists the danger of being an incomplete Cleaning is achieved because fluidic Dead areas arise, so while contamination by cleaning possibly solved but they can not be carried away.

It It is also known that through the nozzle it can cause vacuum fluctuations can come because by bending the hose of the cross section changed.

By the DE 32 17 865 A1 is a fluid-tight hose connection in the milking known, in which a milk hose is inserted into a hole in the milk collecting piece. The edge of the bore or opening is engaged with the milk hose. In order to prevent the milk tube from being pulled out of the bore of the milk collecting piece by the forces acting on the milk tube, after the DE 32 17 865 A1 proposed that an element is provided, which is provided with an edge provided above the bore on which the milk hose can be placed and from which the milk hose is clamped, wherein the element together with the edge surrounds the milk hose and prevents it from that the milk hose can be pulled out of the hole.

Of these, Based on the present invention, the objective is based to provide a fluid-tight hose connection in the milking technique, which can be realized safely and reliably with simple means.

These The object is achieved by a fluid-tight hose connection in the milking technique with the features of claim 1 achieved. Advantageous developments and refinements the hose connection are the subject of the dependent claims.

The fluid density according to the invention Hose connection in the milking system includes a connection piece and an end portion of a hose for connection to the spud a component of a milking system, wherein at least one retaining element and at least one corresponding to the holding element formed Holding contour are provided.

Thereby, that at least one retaining element and at least one to the retaining element are provided correspondingly formed retaining contour is achieved that the stress of the hose, if it is this is about a milking tube, is reduced when the Milking tube with milking cups arranged at the other end region down from the milk collection piece hangs.

By the configuration of the holding element and the retaining contour becomes a positive Connection between the hose and the connecting piece reached. The retaining element and the retaining contour are designed in this case that by the forces acting on the hose connection forces the positive connection unsolved becomes. The form-fitting Connection can be supplemented by a non-positive connection. This can be done, for example, by appropriate dimensioning the at least one holding element and the at least one for Holding element correspondingly designed holding contour achieved become. Due to the positive connection between the connection piece and the hose is an increased Operating time of the hose connection achieved, as opposed to The prior art essentially no permanent traction connection and thus a permanent load of the hose is achieved. About that In addition, due to the low bias, with which the hose attached to the spigot, becomes an ozone cracking tendency significantly reduced.

The fluid density according to the invention Hose connection has many more advantages. So can the hose and the nozzle are made of many different materials consist. The formation of the hose connection is simplified. About that In addition, the hose has a defined position. The danger Insufficient cleaning is reduced because of the connecting piece and the hose fluidly can be improved.

to Formation of the fluid-tight hose connection, the holding element formed on the hose and the retaining contour on the connection piece be. The retaining element can also be provided on the hose, while the retaining contour is formed on the connection piece. combinations These embodiments are also possible.

It is not mandatory that the holding element and / or the retaining contour is provided on the connection piece. Preferred is an embodiment arranged at the at least one holding element on the component is. To increase the safety of the fluid-tight hose connection, it is possible, for example For example, to form the hose with two retaining contours wherein a holding element is formed on the connection piece, while a second holding element is provided on the component. The holding elements and the retaining contours can have different functionalities. It can, for example a release the hose connection, for example, in a longitudinal direction of the connecting piece, while the second pair of retaining element holding contour for securing against Loosen under Formed force substantially transversely to the connection socket is.

According to one Yet another advantageous embodiment of the hose connection It is proposed that the retaining element at least one substantially transverse to the longitudinal direction formed of the connecting piece or the end portion of the hose Has projection. This will provide a reliable and secure connection Hose connection achieved because a pull through the projection of the hose is prevented by the connecting piece.

Of the Connecting piece itself can form the holding element. Is this the Case, the connecting piece, in contrast to the prior art, much shorter be dimensioned, as between the hose and the connecting piece essentially a positive fit Connection is made.

To a still further advantageous embodiment of the hose connection It is proposed that at least two longitudinally of the connecting piece or the end portion of the tube spaced projections are provided. By this measure the safety of the fluid-tight hose connection is even further elevated. Furthermore can the projections form a labyrinth seal.

Especially is appropriate it is the hose connection in such a way that in a circumferential direction considered at least two projections spaced apart zuein other are provided. By this measure the manufacture of the fluid-tight hose connection is simplified, because the effort is reduced.

are at least two protrusions spaced from one another in the circumferential direction, it is proposed that that the protrusions essentially equidistant are arranged to each other. By this measure, the production the projections and the component simplified, if this example of a Plastic can be produced as a demoldability guaranteed becomes.

Especially preferred is an embodiment of the hose connection, wherein the projections offset, preferably arranged partially overlapping one another are.

to Simplification of the design of the hose connection and the Simplification of the solution the hose of the component is proposed that the at least a holding element and the at least one holding contour are formed that a bayonet-like connection arises.

The is hose connection according to the invention particularly suitable for forming a hose connection between a milk hose and a component of the milking system, in particular for configuring a connection between the milk hose and a milk collecting piece. Furthermore is the hose connection according to the invention for forming a connection between the milk hose and a Milking cup especially suitable.

The is hose connection according to the invention for every Type of hose in the milking system suitable.

According to one Yet another advantageous embodiment is proposed that the at least one nozzle is formed on a milk collecting piece is. Already above it was shown that the neck itself be formed with a holding element or with a holding contour can. This is not mandatory. There is also the possibility that the milk picking piece with a holding element or with an element which the holding contour has, may be formed. If a neck is provided, so it is advantageous if the connecting piece and the retaining element or an element which has the retaining contour, the connecting piece surrounds, preferably arranged concentrically to the connection piece is.

Of the The present invention is further based on the object Specify a hose that is particularly suitable for forming a fluid-tight connection in the milking system is suitable.

These The object is achieved by a Hose solved with the features of claim 12. Advantageous developments and embodiments of the hose are the subject of the dependent claims.

Of the hose according to the invention has a first and a second end region, wherein at least one of the end regions a holding contour and / or a holding element has which or which in a holding element or a holding contour a component of the milking system for forming a fluid-tight Hose connection works together.

The Retaining element and / or the retaining contour is an integral part the hose, in particular the milk hose or the Pulsatorschlauchs.

So far hereinafter referred to a hose, it may This hose is a milk hose and / or a Pulsator hose act. Other hoses such. B. pressure hoses are possible.

Prefers is an embodiment of a hose, wherein the retaining contour at least one at least partially in a substantially circumferential direction having extending retaining groove. The retaining groove can be inside the jacket be formed of the hose. In such an embodiment the retaining groove is radially outward directed. However, an embodiment is particularly preferred Retaining groove in outer jacket, such that the retaining groove is directed substantially radially inwardly. This embodiment has the advantage that deposits in the milk hose are avoided and thereby the cleaning of the milk tube and the other Components of the milking system is simplified.

The Holding groove can have different cross sections. The cross-sectional shape is adapted to the cross-sectional shape of the holding elements or a Projection of a holding element. Particular preference is given to cross sections, which is a trapezoidal cross-section or around a essentially triangular Cross section acts. The retaining groove or the retaining element are included designed so that the one surface of the cross-section forms a mounting bevel, so that the force, to the formation of the connection between the hose and the Component is necessary, less than the force to release the Connection.

Especially preferred is an embodiment of the hose, wherein at least two longitudinal direction the first or the second end portion spaced retaining grooves are provided. In particular, it is proposed that in one Viewed circumferential direction, at least two retaining grooves spaced from each other are formed.

are provided several retaining grooves in the circumferential direction, so it is particularly useful if the retaining grooves are substantially equidistant are formed to each other. As a result, the manufacturability the retaining grooves simplified.

The Halteuten are preferably offset from each other, if several retaining grooves in different, mutually parallel planes are provided.

Of the hose according to the invention can be configured with retaining grooves and / or with retaining elements. If at least one retaining element is formed on the hose, then it is it is particularly advantageous if the at least one retaining element at least partially extending in the circumferential direction and a projection having. The projection or the retaining element can on the inner shell be educated. An embodiment is particularly preferred the retaining element on the outer jacket is trained.

To a still further advantageous embodiment of the hose is proposed that the at least one projection a substantially trapezoidal, preferably triangular cross-section having.

To a further advantageous embodiment of the hose according to the invention it is proposed that at least two longitudinally of the first or the second end portion spaced projections are provided. Especially an embodiment is preferred in which in a circumferential direction considered at least two projections spaced from each other are provided. An embodiment is particularly preferred the protrusions essentially equidistant to each other are.

are several projections provided at different levels, it is particularly preferred if the projections offset from each other are formed. Particular preference is given an embodiment in which the projections overlap at least partially.

These it is the hose to a milking hose, so it is advantageous if at least the inner shell of the milk hose made of a material which is compatible with foods, especially milk. It is not mandatory that the hose is made entirely of a material is which food is suitable. Preferred is an education a milk hose as a composite hose comprising an inner hose and at least one outer tube, wherein the inner tube of a food-grade material consists. The inner tube can also be in the form of a coating available.

Preferably is the hose, a milk hose or pulsator hose, at least partially formed of an elastomer or Elastomerverschnitten. Particularly preferred are elastomers or elastomer blends selected from the group of natural rubber, styrene-butadiene rubber, nitrile rubber and / or nitrile-butadiene rubber.

Of the Hose is preferably as a composite hose comprising a Inner tube and at least one outer tube formed. Especially preferred is an embodiment in which the inner tube of a consists of thermoplastic elastomer.

At least an end region, which a holding element and / or a holding contour may be formed on the hose. This can be, for example by vulcanization. There is also the possibility this through the two-K technology be formed.

Further Advantages and details of the invention will be apparent from the in the Drawing illustrated embodiments explains without the subject of the invention to these specific embodiments limited becomes.

It demonstrate:

1 schematically and in section a first embodiment of a hose connection,

2 in section and schematically a second embodiment of a hose connection,

3 A third embodiment of a hose connection,

4 an end portion of a hose for forming a hose connection to 3 .

5 a snapshot during the formation of a hose connection after 3 .

6 an embodiment of an end portion of a hose in section,

7 a plan view of the end portion of the hose to 6 .

8th a component of a milking system with holding elements and

9 the component after 8th on average.

1 shows a first embodiment of a fluid-tight hose connection in the milking technique. The hose connection exists between a hose 1 and a component 2 a milking system. At the component 2 For example, it may be a milk collector. At the hose 1 it can be a milking hose.

The component 2 has a connection piece 3 in the illustrated embodiment, substantially perpendicular to a surface of the component 2 is trained. At the free end of the connecting piece 3 is a holding element 4 educated. The holding element 4 has radially outward projection 5 on. The lead 5 is over the entire circumference of the holding element 4 educated. This is not mandatory. There is also the possibility that the projection extends only over part of the circumference. There is also the possibility that several pros jumps are provided. The lead 5 has a substantially trapezoidal cross-section.

With the connection piece 3 is the hose 1 connected. The hose 1 points in its end area 6 a holding contour 7 on, corresponding to the holding element 4 is formed so that a fluid-tight hose connection is ensured.

The distance A between the underside of the holding element and the surface of the component 2 is preferably slightly less than the distance between the end face of the hose 1 and the end face of the hose 1 parallel lower surface of the retaining contour 7 in that, in the mounted state, the front end region of the hose between the retaining element and the surface of the component 2 is clamped so that an additional backup is achieved.

2 shows a second embodiment of a fluid-tight hose connection of the milking technique. A hose 1 has a holding contour 7 on, to the outer contour of the retaining element 4 is adjusted. The holding element 4 has a radially outwardly directed projection through which the hose 1 with the component 2 Fluid is tightly connected. The lead 5 is formed substantially conical, wherein the surface 8th forms a mounting slope, through which the formation of the hose connection is simplified.

A still further embodiment of a fluid tight hose connection is in the 3 shown. The component 2 has a retaining element 4 which is essentially L-shaped. The holding element 4 has a lead 5 on, which is annular in the illustrated embodiment. The projection engages in a holding contour 7 a, passing through a substantially circumferential direction of the hose 1 extending groove is formed.

The hose 1 surrounds a connecting piece 3 that is in the hose 1 extends into it. For receiving the connecting piece 3 the hose has a recess, so that the inner jacket of the connecting piece 3 with the inner jacket of the hose 1 flees.

4 shows the end of the hose 1 the fluid-tight hose connection after 3 , The retaining contour 7 is by a radially outwardly directed upper collar 9 and by an outward-facing lower collar 10 limited. The collar 10 is flexible. In particular, in the illustrated embodiment with the reference numeral 11 called a slot, causing the under collar 10 in the direction of the upper collar 9 can be pivoted. The radius of the lower collar 10 is smaller than the radius of the upper collar 9 where the radius of the lower collar 10 is chosen so that in the assembled state of the collar 10 for attachment to the projection 5 as happens from the 3 is apparent.

The configuration of the end region of the hose 1 allows easy installation or a simple design of the hose connection with a component 2 which is a holding element 4 to 3 having. A snapshot of the formation of the hose connection is in the 5 shown. The hose 1 is partially via a connecting piece 3 been pushed. The lead 5 comes to rest against the lower collar 10 , By a corresponding embodiment of the lower collar 10 this is in the direction of the upper collar 9 pivoted, like this from the 5 is apparent. Will the hose 1 and the component 2 relative to each other and moved towards each other, the collar gets 10 under the lead 5 , where the collar 10 due to its elastic properties springs back to its original position and causes a blockage, so that the hose 1 can be withdrawn with a much greater force than the force to form the hose connection. Here the area causes 12 that under the slot 11 is present, a barrier effect.

In the 6 to 9 Components are shown to form a fluid-tight hose connection in the milking technique. The hose 1 and the component 2 are designed so that they allow a bayonet-like connection.

The hose 1 is in the 6 and 7 shown. In the illustrated embodiment, the tube is as a composite tube comprising an inner tube 13 and an outer tube 14 shown. The inner tube 13 is preferably formed of a material that is food compatible. The outer tube 14 can be multi-layered. He takes over the task to absorb mechanical effects on the milk hose.

In the end of the hose 1 are radially outwardly directed tabs 15 educated. The tabs 15 each have a footbridge 16 on.

The component 2 has a connection piece 3 on. The connecting piece 3 is surrounded by four retaining elements 4 , Between the holding elements 4 are each recesses 17 intended. The recesses 17 are sized so that between the holding elements 4 one tab each 15 can be introduced.

The holding elements 4 are essentially L-shaped, like this from the 9 is apparent. They each have a leg 18 on, in each of which an opening 19 is provided. The openings 19 are sized so that in these the webs 16 can intervene.

To form a fluid-tight connection between the component 2 and the hose 1 becomes the end area of the hose 1 over the connecting piece 3 slipped, with the hose 1 and the component 2 be aligned with each other so that the tabs 15 in the recesses 17 intervention. By twisting reach the tabs 15 under the thighs 18 , The component 2 and the hose 1 are twisted so far as that the webs 16 in the openings 19 intervention.

Due to the design of the retaining elements 4 and the tabs 15 will prevent the hose 1 at a tensile force from the connecting piece 3 is deducted. The in the openings 19 engaging webs 16 form a locking connection, by which a twisting of the hose 1 relative to the component 2 is effectively prevented, allowing a safe and reliable formation of a fluid-tight hose connection between the hose 1 and the component 2 is reached.

In the exemplary embodiments presented above, the retaining elements 4 at the component 2 educated. This is not mandatory. It is also possible to form holding components on the hose or on the hose and on the component, corresponding holding contours being formed on the component or on the hose.

The in the figures described possibilities a hose connection are also for forming a hose connection between a pulsator hose and a component of the milking system suitable. They are particularly suitable because of the inventive design of the Connection also of, for example, prevailing in the pulsator vacuum considered becomes.

Of the Hose, milk hose, Pulsatorfluid or pressure hose exists preferably partially made of an elastomer or elastomer blends. In particular, it is proposed that the hose made of Elastomerverschnitten from the group of natural rubber, styrene-butadiene rubber, nitrile rubber or nitrile butadiene rubber is formed.

All It is particularly advantageous to use a hose, the one Inner tube having a thermoplastic elastomer consists.

1

tube

2

component

3

spigot

4

holding member

5

head Start

6

end

7

retaining contour

8th

area

9

collar

10

collar

11

slot

12

Area

13

inner tube

14

outer tube

15

flap

16

web

17

recess

18

leg

19

opening

Claims (32)

Fluid-tight hose connection in the milking technique comprising a connection piece and an end portion of a hose for connection to the connecting piece a component of a milking system, wherein at least one holding element and at least one retention contour corresponding to the retaining element are provided. Hose connection according to claim 1, characterized that the at least one retaining element on the component, preferably at the connecting piece is arranged. Hose connection according to claim 1 or 2, characterized characterized in that the retaining element at least one substantially transverse to the longitudinal axis of connecting branch or the end region of the hose formed projection. Hose connection according to claim 3, characterized that at least two in the longitudinal direction of the connecting piece or the end portion of the tube spaced projections provided are. Hose connection according to claim 3 or 4, characterized characterized in that viewed in a circumferential direction at least two projections spaced from each other are provided. Hose connection according to claim 5, characterized in that that the projections equidistant are arranged to each other. Hose connection according to claim 4 and 5 or 6, characterized in that the projections ge offset, preferably arranged partially overlapping. Hose connection after one or more previous claims 1 to 7, characterized in that the at least one retaining element and the at least one retaining contour are formed such that a bayonet-like connection arises. Hose connection according to at least one of claims 1 to 8, characterized in that the hose is a milk hose. Hose connection according to one of claims 1 to 1 to 8, characterized in that the hose is a Pulsatorschlauch is. Hose connection after one or more previous claims 1 to 10, characterized in that the at least one nozzle a milk collecting piece is trained. Hose for a milking system having a first and a second end region, wherein at least one of the end regions a holding contour and / or a holding element has which or which with a holding element or a Holding contour of a component of the milking system to form a fluid-tight hose connection cooperates. Hose according to claim 12, characterized in that that the retaining contour at least one at least partially in having a substantially circumferentially extending retaining groove. Hose according to claim 13, characterized in that in that at least one retaining groove is formed in the inner jacket. Hose according to claim 13 or 14, characterized in that at least one retaining groove is formed in the outer jacket. Hose according to claim 13, 14 or 15, characterized the at least one retaining groove has a substantially trapezoidal cross-section having. Hose according to one of claims 13 to 16, characterized that at least two in the longitudinal direction the first or the second end portion spaced retaining grooves are provided. Hose according to one of claims 13 to 17, characterized that viewed in a circumferential direction at least two retaining grooves spaced from each other are provided. Hose according to claim 18, characterized that the retaining grooves equidistant are formed to each other. Hose according to claim 17 and 18 or 19, characterized characterized in that the retaining grooves offset, preferably partially overlapping are arranged. Hose after one or more previous claims 12 to 20, characterized in that the holding element at least at least partially in a substantially circumferential direction having extending projection. Hose according to claim 21, characterized that at least one projection on the inner jacket is formed. Hose according to claim 21 or 22, characterized in that at least one projection is formed on the outer jacket. Hose according to claim 21, 22 or 23, characterized in that the at least one projection has a substantially trapezoidal shape, preferably triangular Cross section has. Hose according to one of claims 21 to 24, characterized that at least two in the longitudinal direction the first or the second end portion spaced projections provided are. Hose according to one of Claims 21 to 25, characterized that spaced apart in a circumferential direction at least two protrusions are formed to each other. Hose according to claim 26, characterized that the protrusions essentially equidistant are formed to each other. Hose according to claim 25 and 26 or 27, characterized characterized in that the projections offset, preferably arranged partially overlapping. Hose after one or more previous claims 12 to 28, characterized in that the hose at least partially selected from an elastomer or from elastomer blends the group of natural rubber, styrene butadiene rubber, nitrile rubber, Nitrile butadiene rubber. Hose after one or more previous claims 12 to 29, characterized in that the hose comprises a composite hose an inner tube and at least one outer tube. Hose according to claim 30, characterized that the inner tube consists of a thermoplastic elastomer. Hose after one or more previous claims 12 to 31, characterized in that this is a milk hose, Pulsator hose, fluid hose, pressure hose or ventilation hose is.