SU106324A1 - Push pull milking machine - Google Patents

Description

Two-stroke milking machines, including a compressor, a vacuum pump, receivers, a pulsator, a manifold, and teat cups, are known.

The disadvantage of such methods is that their work is based on the impact on the teat of a relatively high vacuum II weak use of compression as a nipple irritant, which does not correspond to the manual process of milk of the body. .

F3 described this flaw eliminated.

MaiHuiia has the peculiarity that, in order to bring the automatic milking process to the actual physiological processes of manual milking and milk of a calf, the working bodies of the bottom cups are made in the form of “pneumatic fingers” - several hollow elastic rings that, under the influence of compressed air, are consistently from above they squeeze the nipple down, and then, under the influence of vacuum, in the same sequence release it for rest.

The drawing shows a longitudinal section of a teat cup.

Working each of the milking cTaixana / worn on the teat isOpOBbi nipple, wavelengths in the form of “pneumatic fingers —lieAnd for example (four) hollow vi; iCTH4Hbix rings 2.

Each ring through a metal nozzle j with a calibrated hole 4 is connected to the chamber 1 J of the mode 1G; Ogo pressure, connected by a rubber gang with a collector. Compressed air nz to; l; ery 5 enters the cavity of each ring 2 through the calibrated hole 4 of the connecting pipe 3. The nipple is collapsed. extending consistently from top to bottom, i.e. from the ociioFsauHH nipple to its tip.

First, the nipple compresses the first (top) ring. Pinching the nipple at the base, this ring prevents the leakage of milk back into the milk tank. In the tact of squeezing the milk flows out of the mouth. Pulling the milk out of the nipple, "pneumatic fingers

they begin to unclench, and from that moment they set a tact of rest. With a rest stroke, the innermost noloet of the pkevmatical Yalets are connected alternately to the negative pressure system of the milking mouth. Rings 2 take their original shape, freeing the nipple for rest.

The process of depressing pneumatic fingers occurs in the same sequence as squeezing. Initially, compression of the nipple by the upper ring at the base of the nipple is terminated, then, nostapenio is terminated, and the compression of the nipple by the other three rings is stopped. Sequential compression and decompression of the nipple by pneumatic fingers is carried out with the aid of a milking pusher pulsator through a collector. The sequence and speed of compression and decompression of the pneumatic fingers provides a different cross-section of the holes 4 in the nipples screwed onto the metal nozzles 3.

It should be noted that, in addition to squeezing the milk out of the nipple with pneumatic fingers, the glass also provides for the action on the nipple of slightly diluted air, both in the compression stroke and in the rest stroke, which is of secondary importance.

The funnel-shaped bottom of the metal teat cup ends with a round nozzle 6, from which milk flows out; glang through the collector, it falls into the bucket. The degree of dilution of air in a teat cup under the nipple varies from 20 to 50 mm Hg and is established experimentally. In the squeeze tact, rarefied air contributes to the dispensing of milk from the nipple and keeps the nipple in a straight, slightly extended position.

In the rest stroke, the vacuum under the nipple contributes to the accumulation of milk in the nipple due to an increase in its surface. This corresponds to the rest tact in the process of sucking the nipple of the calf, as in the cavity of the mouth of the calf at this moment, as a rule, sun1; there is a minimum vacuum.

A pneumatic pump 7 is used to firmly and securely keep the teat cup on the teat of the udder of the cow in the upper part of the cup. The upper part of the metal etacap is hollow. The lateral wall of the sucker 7 is shaped like an ellipse and fits snugly to the bottom of the udder at the base of the nipple. Throughout the suction surface adjacent to the udder are holes

8. The cavity of the suction cup 7 is connected with the help of a metal tube.

9, and rubber hose through the manifold with the machine’s constant vacuum system. Due to the vacuum, the suction cup is sucked to the specified part of the udder and keeps the teat cup in position. The vacuum acting in the suction cup is theoretically about 140 mm Hg.

A pulsator is used to create a variable pressure in the teat cup. The pulsator in the machine is made according to the type of a three-stroke milking machine and is structurally somewhat modified, with an additional positive pressure chamber (higher than atmospheric) with a feed inlet and an atmospheric pressure chamber excluded from it. All dimensions and ratios of the pulsator valves are unchanged.

Subject invention

1. Two-stroke milking equipment, including a compressor, a vacuum pump, receivers, a pulsator, a collector and teat cups, characterized in that, in order to bring the automatic milking process to the actual physiological processes of manual milking and milk calf calf, the working bodies of teat cups made in the form of "pneumatic fingers - several hollow elastic rings, which, under the influence of compressed air, successively compress the nipple downwards and then under the influence of vacuum in the same sequence The tension frees him to rest.

2. The shape of the machine according to 11. 1, characterized in that in order to ensure the successive deformation of the "pneumatic palde-elastic rings" calibrated holes are used through which the cavities of the rings are alternately connected to the systems of positive and negative pressure of the milking machine.

3. Form execution machine pop. 1 and 2, about tl and h and y w. and with the fact that to keep the teat cups on the teats of the udder of the cow

Pneumatic suction cups are applied in their upper parts, the cavities of which are connected to the system of negative pressure of the milking machine during the milking process.