SU1253533A1 - Apparatus for automatic removal of abnormal fractions from milk flow - Google Patents

Description

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The invention relates to agriculture, in particular, to devices for automatic switching of milk ducts for machine milking upon detection of abnormal fractions in the milk flow, for example, mastitis extracts, colostrum, mechanical primeya, etc.

The aim of the invention is to improve the accuracy and speed of operation of the device.

The drawing is a schematic diagram of a device for automatically removing abnormal fractions from a milk stream.

The device consists of a plastic housing 1 with a buffer capacity

2dl milk with discharge pipe

3 and antifoam 4, made in the form of a grid. In case 1 there is a buffer capacity 5 for a milk simulator, which is served by any liquid with a specific gravity and density of normal milk, equipped with an overflow pipe 6 and an antifoam 7, made in the form of a grid.

Each of these buffer tanks 2 and 5 is connected by a channel with a dispenser 8 liquids, made in the form of two gear pumps made of plastic, having gear 9 with a large module of teeth tightly attached to the housing 1 and rotating freely on the axes 10. At the same time any two gears of two pumps are rigidly interconnected by a movable shaft P.

The outlet channels of the dispenser 8 are connected to a viscosity sensor 12 of liquids that is filled, for example, in the form of two identical cylinders 13 with narrow slots 14, each of which has a movable piston 15 with a spring 16 and a ferromagnetic core 17. Along the edges of the cylinders 13 Two plastic induction windings 19 and two measuring windings 20 are installed on the plastic plugs 18, hermetically fixed in the housing I. The induction windings 19 are connected in series to the alternating current source, and the measuring windings

20 is included differentially, i.e. counter to each other, and connected to the rectifier 21. The output of the rectifier

21connected through a direct current amplifier 22 (UFD) to the winding of the executive relay 23, contacts 24

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which are connected to a current source (+ 12V) and a winding 25 of the solenoid valve 26. The solenoid valve 26 has a plastic housing 27 with a port 28 that is connected to the port 29 of the milk viscosity measuring chamber 30, as well as a drain pipe 31 for normal milk and a drain nozzle 32 for abnormal fractions. A ferromagnetic valve 33 with a bore 34 is movably mounted in the housing 27 and connected to a spring 35 and a travel stop 36 mounted on the plug 37 in the housing 27. The pipe 38 of the viscosity chamber of the milk simulator is connected to the bypass 6 of the buffer tank 5 for the simulator milk At the input of the UFD 22, a potentiometer 40 is set, changing the sensitivity of the device.

The device works as follows.

A hose from the milking machine is put on the inlet pipe 3, a hose going to the tank for normal milk is put on the drain pipe 31, a hose going to the tank for abnormal milk is connected to the drain pipe 32, the pipe 38 is connected to the bypass pipe 6 and the solenoid valve nozzle 28 is connected with a short length of hose to the nozzle 29 of the measuring chamber 30.

The milking machine is turned on and a vacuum is created in the pipes 31 and 32, which through the opening 34 in the valve 33 is transferred by the pipes 28 and 29 into the chamber 30 and even through the slot 14 and the milk dispenser 8 into the buffer tank 2 for milk, from where through the inlet 3 there is a vacuum acts on the milking machine. Milk begins to flow into the tank 2, and the net defoamer 4 eliminates the formation of foam in the tank 2, where a buffer stock of milk is formed, which eliminates the uneven flow of milk into the milk conduit during milking. Next, from the buffer tank 2, the milk supply is consumed through the milk dispenser 8, which is a gear pump made of plastic and having gears 9

freely rotating on axes 10 under the action of a pressure differential between its inlet and outlet. In this case, the left pump is the leading one, since

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through the shaft 11 rotates the driven right pump, having the same dimensions of parts and design. The right dispenser 8 from the buffer tank 5 moves the portions of the milk simulator that has the density and viscosity of normal milk. Since the gears 9 of the dispenser 8 are rigidly connected to each other by the shaft 11, the portions of the milk of the left dispenser are equal to the portions of the milk simulator passing through the right dispenser. The same portions of these fluids enter the fluid tightness sensor 12, namely, the space above the pistons 15, which are displaced by the pressure of the liquids in the cylinders 13, compressing the springs 16 and opening part of the slots 14 to allow liquids to pass through chambers 30 and 39.

If the viscosity of milk entering the left cylinder 13 is equal to the viscosity of the milk simulator entering the right cylinder 13, then equal portions of liquids having the same viscosity pass through the same area of slots J4, i.e. the right and left pistons 15 are offset by the same amount. Therefore, the cores 17, which are rigidly connected to the pistons 15, are also displaced by the same amount, which leads to an equal magnitude of magnetic induction between the right and left windings 19 and 20. At the same time, equal variable voltages are induced in the measuring windings 20, which compensate each other. each other, since the windings 20 are switched on differentially (counter). There is no voltage at the gate 21, so the voltage on the relay 23 is not applied to the output of the DCF 22, its contacts 24 are open and the winding 25 of the solenoid valve 26 is de-energized. The latch 33 is in the initial position when the hole 34 coincides with the drain hole

2535334

 pipe 31 for normal milk,

and the opening of the nozzle 32 for abnormal milk is blocked by the valve 33, so normal milk goes to tank 5 for precast normal milk.

If the viscosity of the milk entering the left cylinder 13 is less or

JQ is greater than the viscosity of a milk simulator entering the right cylinder 13, which occurs in case of diseases of cows with mastitis, in the presence of colostrum or other impurities,

t5 equal portions of liquids with different viscosities, passing per unit of time through the narrow Slots 14, require a different area of the slots 14 for their movement. The greater the portion of the fluid in the bone, the greater the distance that the piston 15 moves, creating an increment in the area of the slit 14 to ensure the movement of the portion indicated per unit

25 times. Thus, differences in the viscosity of the controlled milk and the viscosity of the milk simulator lead to differences in the position of the pistons 15 and, accordingly, of the cores 17, and 30 leads to different levels of signals induced in the windings 20. The difference in the signal levels goes to the terminal. 21, then to the UFD 22 and to the winding of the relay 23, which is slapped, melts and connects -I-12B to the winding 25 of the solenoid valve 26. The valve's ferromagnetic valve 33 is drawn into the solenoid 25, overcoming the force of the spring 35, and takes

40 is a position set by stroke limiter 36 when the opening 34 of the valve 33 coincides with the hole of the drain pipe 31 for normal milk and is blocked by the valve

45 33, therefore, the abnormal fractions are separated from the milk line and transferred to the abnormal milk tank.

Editor N.Shvydka

Compiled by V. Andrievsky

Tehred I.Popovich Proofreader M.Demchik

Order 4651/5 Circulation 679 Subscription

VNIIPI State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (4)

1. DPA DEVICE FOR AUTOMATIC REMOVAL FROM MILK FLOW OF ANORMAL FRACTIONS, containing a chamber made in the housing with an inlet pipe, a drain pipe for normal milk and a drain pipe for abnormal fractions,. as well as a valve installed between the nozzles, characterized in that, in order to improve the accuracy and speed of operation of the device, a buffer tank with a defoamer for milk and a buffer tank with a defoamer for milk simulator, liquid dispensers, a liquid viscosity sensor, a rectifier, an amplifier are made in the chamber direct current with an executive relay winding, and the valve is electromagnetic, and the buffer tank for milk and the buffer tank for the milk simulator through the dispensers are connected respectively to the first and second to the inputs of the fluid viscosity sensor, the electrical outputs of which are connected differentially to a rectifier, the output of which is connected via a DC amplifier to the coil of the executive relay, the contacts of which are connected to the current source with the coil of the electromagnetic valve. 2. The device according to claim 1, characterized in that the fluid dispenser is made in the form of two gear pumps made of plastic and rigidly interconnected by a shaft with the possibility of return. 3. The device according to claim 1, wherein the fluid viscosity sensor is made in the form of two cylinders with narrow slots, in each of which a piston with a spring and a ferromagnetic core is mounted with the ability to move, and two induction cores are installed on the cylinder edges and two measuring windings connected differentially, and the induction windings are connected in series with an alternating current source. 4. Device pop. 1, characterized in that the electromagnetic valve is made with a plastic case and with one inlet and two drain pipes, between which a ferromagnetic valve with a hole is installed with the possibility of movement, connected inductively to the winding of the solenoid mounted on valve body and equipped with a spring and a stroke limiter of the valve.