SU1699384A1 - Milk gauging apparatus - Google Patents

Abstract

The invention relates to agriculture, namely dairy cattle breeding on an industrial basis, and can be applied in milk quantity accounting systems on livestock farms. The purpose of the invention is to improve the measurement accuracy when the longitudinal axis of the device deviates from the vertical. The device contains sensitive elements 6 of a level sensor that measure a predetermined portion of milk and are installed in a perforated head 7 having a series of calibrated holes 8 o The head 7 is located on the longitudinal axis of a cylindrical SP

Description

The housing of the measuring chamber 2 with a conical bottom. Outside, on the outlet pipe 4 of the milk discharge there is mounted a winding 9 of the solenoid valve, and inside the core 10 of the electromagnet of the latter with a spherical valve is installed with a gap. Sensitive elements 6 are connected through an amplifier

and a time relay with the leads of the winding 9 of the solenoid valve and the counting input of the pulse counter. The overflow of milk from compensatory 1 to the measuring chamber 2 reduces the intensity of the foaming process and, consequently, improves the accuracy of measuring the amount of milk 7 or more.

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You will invent agricultural products, namely dairy cattle breeding on an industrial basis, and can be applied in systems that account for the amount of milk on livestock farms.

The aim of the invention is to improve the measurement accuracy when the longitudinal axis of the device deviates from the vertical.

Fig 1 shows the device, | general view; Fig. 2 is a block diagram of the control device; Fig. 3 is a schematic of the control circuit of the device; in Fig „4 - a perforated head, general view; 0 5 is a timing diagram of the operation of the elements and units of the device; in fig. 6 - device when filling the measuring chamber with milk, general view; in fig. 7 - the same, when emptying the measuring tank from milk, a general view.

The device has a cylindrical body divided by a conical partition into a compensatory 1 and 2 measuring chambers, a tee tube 3 connecting the chambers with a milk hose. The vacuum cavity of both chambers is connected to the discharge pipe 4 of the milk draining by means of an air tube 5. vacuum tubes for them The connection of the tube 5 with the discharge pipe 4 behind the solenoid valve is shown conditionally in order to simplify the drawing. However, to completely eliminate the possibility of milk suction, Normally the air tube 5 does not connect with the pipe 4, and a vacuum cavity such as a milking pail.

In order to enable the device to operate on mobile units at variable angles of inclination, the sensitive elements 6 of the contact level sensor measuring the specified

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a portion of milk is installed in a perforated head 7, having a number of calibration holes 8, and located on the longitudinal axis of the cylindrical body of the metering chamber 2 with a conical bottom.

The sensing elements 6 of the level sensor may be made of any electrically conductive material that can be used in milk lines. Elements 6 are isolated from milk (in Fig. 4 they are shown conventionally). To prevent false triggering, caps 7 are made of a material that is not wetted with milk (similar in its properties to fluoroplastic), which is acceptable for use in food processing devices.

Before starting, the sensing elements 6 are set at a predetermined distance from each other when setting up the device. This distance determines the specified (measured) volume of milk in the measuring chamber 2. During operation, the movement of the sensitive elements 6 is not provided.

Outside on the discharge pipe 4 of the milk discharge, the solenoid valve winding 9 is mounted, and the core 10 of the electromagnet of the latter with a spherical valve is installed inside with a gap.

At the same time, the bottom parts of compensatory 1 and dimensional 2 chambers communicate by means of supply 11 and bypass 12 nozzles to the outlet nozzle 4 of milk draining. Sensitive elements 6 of the contact level sensor are connected via amplifier 13 and time relay 14 (Fig. 2 and 3). from the winding 9 of the solenoid valve and the counting input of the counter 15 pulses. Perforated tip 7 is installed strictly on the longitudinal axis of the measuring chamber.

Moreover, a predetermined portion of milk in the device is determined by the level of milk in the measuring tank 2, m, when the milk rises to the upper sensing element 6 of the contact level sensor, an electrical circuit closes: the upper sensitive element 6 - milk - the lower sensitive level sensor

According to the rules of operation, any pulse counter with a 12 V operating voltage can be used in the device. For example, on standard 511 or 5610 series chips, in this case it is convenient to use a digital indication of the change result.

By way of example, FIG. 1 shows only two sensitive elements 6 of the level sensors — upper and lower. In this case, the measured volume is the volume of the measuring chamber 2 between these elements 60 To increase the measurement accuracy, intermediate sensors 6 can be installed, while the signal when the intermediate elements 6 are closed is sent only to the counter 15 pulses of the computer 16, the current to the winding 9 of the electromagnetic valve is supplied only when closing the upper and lower sensing elements 6 "

It should be noted that when introducing a device for recording the amount of milk in an automatic system, computer 16 performs the following functions; animal identification; indication of milk yield; The diameter of the calibrated holes and their number depends on the geometrical dimensions of the measuring chamber 2 of the tip 7.

Time relay 14 is introduced into the device to account for the amount of milk to simplify its design and reduce the harmful effect of electric current 25 on milk, since in the absence of time relay 14, additional sensitive elements 6 would be necessary to introduce into the control circuit, indicating full emptying of the measuring container 2 , which in turn would lead to an increase in the time of current flow through the milk. Moreover, the duration of the time delay, set by time relay 14 (that is essentially the duration of milk flowing from the measuring chamber 2) biraets so as to ensure complete emptying of the chamber. Consequently,

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the amount of time delay, the time required to fill the measuring chamber for emptying the measuring chamber 2 of the capacity 2, the output depends on the value of the measured volumes to the manipulator to switch on the mode (t0e0 of the measuring chamber 2 between maododo, turning off the milking unit by the upper and lower sensitives and removing the teat cups; elements 6) and hydraulic gathering and storing information on daily drainage from 45 oz. It is not necessary to change it once during the measurement process, because the same portions of milk through the drain hole flow out at an equal time. As can be seen from the electrical circuit diagram (fig 3), the time relay 14 is contactless with a turn-off delay .

The device works as follows

At the same time, calibrated holes 8 in the tip 7, designed to reduce the fluctuations of the upper level of milk inside the tip 7 in order to reduce measurement errors “During operation, when filling the milk of the measuring tank 2, the milk and the e-pipe 4 enter first into the space between the walls of the measuring chamber 2 and the tip 7, and then already through the holes 8 into the inside tip 7 (Fig. 1), “Starting from the indicated direction of the engine 50

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milk harvesting (figs 6 and 7), the situation when the milk in the tip 7 has risen above the level in the measuring chamber 2 and is poured out over the top edge of the tip 7, is impossible.

Level fluctuations in the tip 7 are reduced due to the throttle action of the holes 8. This reduces the amount of liquid entering the tip 7 because the holes 8 are located in the lower part of the tip 7 and most of the time the filling of the measuring tank 2 is below the foam level in this tank

The diameter of the calibrated holes and their number depends on the geometrical dimensions of the measuring chamber 2 tip 7.

Time relay 14 is introduced into a device to account for the amount of milk in order to simplify its design and reduce the harmful effect of electric current 5 on milk, since in the absence of time relay 14, additional sensitive elements 6 would have to be introduced into the control circuit, indicating full emptying of measuring container 2 , which in turn would lead to an increase in the time of current flow through the milk. Moreover, the duration of the time delay, set by time relay 14 (that is essentially the duration of milk flowing from the measuring chamber 2) under This is taken in such a way as to ensure that this chamber is completely empty. Consequently,

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At the beginning of milking, the winding 9 of the solenoid valve is de-energized (Fig. 5) The core 10 of the ball valve is in the lower position, the milk enters the measuring chamber 2. When the milk level reaches the upper sensing element 6 of the level sensor, the electrical circuit closes on the electromagnetic winding 9 the valve is energized through the amplifier 13, as a result of which the core 10 is retracted and the ball valve closes the inlet to the measuring tank 2, opening the output. Simultaneously, the time relay 14 switches on, short circuit 9 of the solenoid valve irrespective of the level sensor sensors 6 acting. Measuring chamber 2 is emptied and compensation chamber 1 is filled. After a specified period of time, time relay 14 opens its contacts in the power supply circuit of the winding 9 of the solenoid valve, the core 10 of which is lowered into the milk. from the milk line and the compensation chamber 1 enters the measuring chamber 2

When milk closes sensitive elements 6, the process is repeated. The signals from the time relay 14 are sent to the pulse counter 15 of the computer 16, which, by summing up the portions of milk, captures the total yield and, if necessary, by the accumulation chamber 2 measuring time determines the current flow (for giving the command to add and disable the milking machine)

The perforated tip 7 with calibrated holes 8, in which the sensitive elements 6 are located, stabilizes the upper level of milk and protects the circuit from accidental

Claims (1)

The position of the tip 7 on the axis of the metering chamber 2 provides an increase in the accuracy of measuring the amount of milk when the device is tilted at an angle of LS Vertical, due to the symmetry of the sections of the cylindrical body of the latter. Invention Formula A device for counting the amount of milk, containing a counting unit, a time relay, a cylindrical tank with a conical base, divided by a conical partition into lower measuring and upper compensation chambers, the upper parts of which are connected to the air tube, a contact level sensor installed in the measuring capacity, and the chamber is equipped with an inlet pipe for connection to the milk line, an electromagnetic valve installed so as to be able to shut off in the first position of the milk channel between the measuring and The compensation chambers, and in the second - the outlet pipe communicated with the bottom of the measuring container, characterized in that, in order to improve the measurement accuracy when the longitudinal axis of the device deviates from the vertical, the milk channel is made in the form of an overflow pipe equipped with a perforated tip located in the cavity measuring chamber on its longitudinal axis of symmetry, while in the perforated head-mounted sensitive elements of the contact level sensor, and the solenoid valve winding is connected to the circuit Tani through contact time switch to a control input of which is connected via the amplifier contact layer sensitive elements of the sensor sixteen about + 12 in - & ЛМ6 / 77УЈ / Щ1 // WI / S76C0B Q-12B figs srigL one XBa / nvi / nl