Development of a device for cleansing cow udder teats and testing it under industrial conditions

Abstract

Preparing cows for milking is one of the most important operations. Not only the speed of milk production but also the quality of milk depends on the level of the work performed.
 One of the most effective ways to mechanize the preparation of cows for milking implies the development of a special mechanical brush that cleans and stimulates the teat skin. As a result, there is no need to use additional foam detergents and napkins to cleanse and disinfect teats.
 A device has been designed for cleansing teats with two rotating brushes.
 Theoretical studies of the interaction of cleansing elements of the device for mechanical removal of pollutants from the udder teats in the course of milking operation were carried out. Assuming constancy of the modulus of elasticity, shape and roughness of teats, linear and angular velocities of brushes, nap stiffness, and homogeneity of physical and mechanical properties of contaminants on the teat, dependence of force Fe of the mechanical device on length l of the cleansing element and its speed ω was established. Under the condition that force Fe of the mechanical device is smaller than force Fp which causes pain but greater than the force retaining pollutants (adhesion), values of the main design and technological parameters of the developed device were determined: l=8 mm, ω=106 rpm.
 As a result of production tests, it was found that when using the developed device, the daily milk yield of the experimental group of cows exceeded that of the control group by an average of 1.1 times which has made it possible to obtain a supplement of 132.5 kg of milk. Along with this, there was a 0.19 % increase in milk fat content in the experimental group compared to the control group. The number of microorganisms decreased 2.2 times and the number of contaminant particles decreased 4.6 times

Establishing the influence of technical and technological parameters of milking equipment on the efficiency of machine milking

“…In order to eliminate various violations in the management of machine milking and to obtain high yields, it is necessary to establish the effect of technical and technological parameters of milking equipment on the efficiency of machine milking [30].…”

Results of Hydrodynamic System Research Milking of Milking Installations

“…Молоко від вимені корови проходить через доїльні апарати, молокопровід, молокозбірники, індивідуальні та групові лічильники тощо. Це обумовлює зниження якісних показників молока-сировини за бактеріологічною оцінкою [1]. Рекомендованими умовами покращення якості молока є процес промивання доїльних установок шляхом збільшення його тривалості, що призводить до підвищення експлуатаційних витрат (води, мийного розчину, електроенергії тощо) [2].…”

“…і Алієв Е.Б. запропонували пристрій для промивання молокопровідних систем доїльних установок [1,2,8,12,13], який складається зі штанги з пружиною, яка провертається на осі. На кінцях штанги розташовані напірний клапан промивання мийною рідиною та повітряний клапан, які з'єднані з штангою за допомогою шарнірів.…”

Simulation Tests of a Cow Milking Machine—Analysis of Design Parameters

“…AMS are internationally accepted as a valid alternative to conventional milking parlours, and as an advanced means of dairy farm management [7,8]. The conditions for the mechanical milking of cows are analyzed, taking various design parameters of the milking machine into account [9][10][11]. The goal of these studies is to make the machine-based milking of cows more efficient [12,13] and improve the efficiency of the milking process [14].…”