RU2230452C2 - Teat tube for teat cup - Google Patents

Abstract

FIELD: agriculture, in particular, machine milking of farm animals.

SUBSTANCE: teat tube has working part made from resilient material. Cord threads are symmetrically embedded over tube section perimeter, with number of cord threads being 6-9. Diameter of cord threads is 0.9-1.1 mm and length is 0.5-0.7 the length of working part of tube.

EFFECT: increased efficiency by minimized impact by working part of rubber liner upon cow's udder during operation of milking unit.

2 cl, 3 dwg, 1 tbl

Description

The invention relates to agriculture, namely to machine milking of farm animals.

Known teat tube of a milking cup made of an elastic material containing a suction cup and a ring mounted around the perimeter from the inside, made of inelastic material with the possibility of vertical movement (SU No. 1739915, A 01 J 5/06, 06/15/92, Bull. No. 22) . However, the device has several disadvantages. During operation of the milking machine, it is possible to move the ring inside the nipple tube and worsen the operating conditions of the device and result in rubbing on the nipples of the animals.

In addition, a traumatic effect of the faces of the ring on the nipple is possible due to incomplete recession of the ring into the nipple rubber during operation of the device.

Also known is the teat tube teatcup, which is a single molded rubber structure consisting of three zones: the upper part - the suction cup, the middle - the working part and the lower branch part (L.P. Kartashov. Machine milking of cows. - M .: Kolos, 1982 , p. 53). The nipple tube is made of synthetic rubber (food grade) based on neoprene and is installed in the milking cup, which in turn is placed in the hanging part of the milking machine. The thickness of the rubber in the working part of the tube reaches 2.5 mm.

However, the known nipple tube has several disadvantages.

When the milking machine is operating, the teat tube is exposed to variable pressure. With a compression stroke (760 mmHg) and a suction stroke (375 mmHg), the so-called "cotton" occurs - the impact of the working part of the rubber nipple on the nipple of the cow.

This often leads to local rubbing (the so-called "nipple callus"), which provokes the occurrence of mastitis. (N.P. Pronichev, O.P. Zhestokanov, R.Ya. Devina. "Experimental Studies of the Operating Modes of a New Milking Machine", VIZH, issue 57, part 1, Dubrovitsy, 1995, p. 63).

The objective of the invention is to provide a teat tube to minimize the impact of the working part of the rubber teat on the udder of the cow during operation of the milking machine.

To solve this problem, in the nipple tube of the milking machine, made of elastic material and consisting of a suction cup, working and tap part, cord threads with a diameter of 0.9-1.1 mm and a length of 0 are included symmetrically along the perimeter of the section into the working part of the tube 50.7 lengths of the working part of the tube. The total number of threads is 6-9.

The invention is illustrated by drawings, in which: figure 1 is a General view; figure 2 - section of figure 1; figure 3 is a section aa of figure 1. According to the invention, in the nipple tube of the teatcup made of an elastic material (food rubber based on neoprene) and consisting of the upper part - the suction cup 1, the middle part 2 and the lower branch part 3, cord threads 4 are included symmetrically around the perimeter of the section.

Cord yarns can be made from synthetic or natural cord. Threads 4 have a diameter of 0.9-1.1 mm, given that the thickness of the rubber in the working part reaches 2.5 mm.

The length of the filaments 4 reaches 0.5-0.7 of the length of the entire working part of the teat tube, which is 60-80 mm.

The specified length of the threads provides the necessary amount of stiffness of the upper working part of the tube, which is directly adjacent to the nipple of the udder of the animal, thereby reducing the impact when sucking and squeezing.

The operation of the milking machine with the proposed teat tube can be illustrated by the following example.

Example. A test bench for testing milking machines with an artificial udder was used as a test bench (development of the Department of Industrial Animal Husbandry Technology of the Moscow State Agroengineering University named after V.P. Goryachkin).

The number of "pops" that occur during operation of the apparatus with the usual one (the number of threads is 0) and the proposed nipple tube was determined using the universal device VShV-003-M2 (noise and vibration meter) with sensors DN-3-M1.

The specified equipment allows you to determine the moments of a sharp impact of rubber on the udder of a cow ("cotton") by noise and vibration indicators. Test data for 300 seconds of operation of the stand are shown in the table.

As can be seen from the data presented, the optimal conditions are provided by the length of the cord threads, component 0.5-0.7l and the number of threads 6-9. When the number of threads is less than 6, the number of "pops" increases, more than 9 - the positive effect no longer increases.

Thus, the proposed design of the nipple tube can dramatically reduce its impact on the nipple of the cow udder, which will avoid the occurrence of rubbing the udder and mastitis in animals.

Claims (2)

1. The teat tube of the teatcup made of elastic material and consisting of a suction cup, working and tap parts, characterized in that cord threads with a diameter of 0.9-1.1 mm and a length equal to 0 are included in the working part of the tube symmetrically along the perimeter of the section , 5-0.7 lengths of the working part of the tube. 2. The nipple tube according to claim 1, characterized in that the number of threads is 6-9.

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