CS227400B1 - Method of and apparatus for machine milking with additional air suction - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention

The prior art machine milking is based on the principle of alternating injection of vacuum and atmospheric pressure into the teat cup inter-hand chamber, while there is a permanent vacuum in the teat cup hand chamber. By alternating the pressure values in the inter-chamber chamber, a compression stroke and a suction stroke are induced, which results in the known machine milking, which, however, has a number of disadvantages. Due to the different values of vacuums in the inter-hand chamber and under-chamber, teat gums are swollen, which has adverse effects on the teat tissue. Furthermore, the teat rubber movement deviates from the pulsation set on the pulsator, causing the actual pulsation rate to vary with negative effects on the milking process. Due to the cyclic fluctuation of the vacuum caused by the cyclic movement of the teat rubber, the milk flows back, which washes the teats and easily infects with inflammatory germs. Although a milking device is provided on the teat cups with an atmospheric pressure suction valve from the outside, which is controlled by pressure changes in the inter-chamber chamber, this embodiment only improves the suction conditions of the milk and prevents its backflow. Adverse, already mentioned others. however, it does not prevent the effects on the teats of the animal.

The air suction machine and the device for carrying out the method according to the invention overcome these disadvantages. Its essence is that atmospheric compressed air is sucked into the teat handpiece chamber from the teat cup, the atmospheric air inlet into the teat chamber is closed by sweat, and the pressures in the teat chamber and the teat chamber are sucked off, then

-2.227 400 re-opens atmospheric pressure to the inter-chamber chamber and repeats periodically ·

The air suction machine and the apparatus according to the invention bring about a steady, precise change in the pressure conditions within the teat cup with a precisely defined process, so that a relatively quick press of the teat is followed by a gradual release of the teat until finally and the inter-chamber chamber is completely released, the perfect milk flow being delivered by the suction of pressure from the inter-chamber chamber to the substructure, which promotes the movement of milk through the milk hose and further into the milking system. The milking process is physiologically very favorable and hygienically undesirable backflow of milk is completely prevented.

An exemplary embodiment of a teat cup for carrying out the method according to the invention is shown schematically in axial section in the accompanying drawing.

A teat rubber 2 is inserted into the handpiece body 2. Thus, the underframe chamber 3 is formed practically in the inner space of the teat rubber 2 under the teat (not shown), onto which the handpiece body with gravel rubber 2 is placed during milking. The teat (not shown) closes the teat opening 6 formed in the teat rubber 2 for receiving the teat. The sub-chamber 3 is connected by means of a connecting air nozzle 5 to the intermediate hand chamber 4, which is formed between the inner wall of the handpiece body 11 and the teat rubber 2. The teat rubber 2 is attached to the handpiece body 1 and sealed 8. A common milk hose (not shown) is then connected to the chamber 3. The inter-chamber chamber 4 is provided with an interruptible supply 9 of atmospheric pressure.

The air suction machine according to the invention proceeds as follows: Atmospheric pressure is introduced into the inter-chamber chamber 4 through the inlet 9, which presses the gravel rubber 2 onto the teat found in the sub-chamber 3. A pressing cycle occurs. There is a permanent vacuum in the chamber 3. Immediately after the introduction of atmospheric pressure into the inter-chamber chamber 4, the suction chamber 3 begins to suck in or supply air through the connecting air nozzle 5, which positively affects the transport of milk and prevents its return. The inlet 9 is closed. Interstructure pressure

The 227 400 chamber 4 is sucked off by suction with the vacuum in the chamber 3 until it is completely leveled, the teat rubber 2 stops pressing the teat and a suction cycle occurs until the inlet 9 is reopened and the atmospheric pressure is released into the interstring chamber 4, whereupon the action is repeated. The permanent connection of the inter-chamber chamber 4 and the sub-chamber 2 by the connecting air nozzle 5 not only helps the milk flow, but also prevents the teat rubber 2 from swelling and the aforementioned other undesirable effects, while achieving the desired regular changes in pressure conditions in the teat cup.

Claims (2)

SUBJECT OF THE INVENTION 227 400 1. A method of machine milking with suction of air into the teat handpiece chamber, characterized in that atmospheric compressed air is sucked into the teat handpiece chamber and is then sucked into the bed chamber; the pressures in the inter-chamber chamber and the under-chamber chamber are equilibrated by suction, whereupon the atmospheric pressure supply to the inter-chamber chamber is reopened and the process is periodically repeated. Device for carrying out the method according to claim 1, characterized in that the underlay chamber (3) formed in the inner space of the teat rubber (2) is connected by an air nozzle (5) to the inter-chamber chamber (4) formed between the teat rubber (2). ) and a handpiece body (1) provided with an interruptible atmospheric pressure supply (9). 1 drawing 227 400