RU2015665C1 - Device for primary treatment of milk at milking plants - Google Patents

Abstract

FIELD: agriculture. SUBSTANCE: device comprises milking apparatuses, milk receiver with float transmitter, milk pump with its control unit, milk storage reservoir, time relay and block of solenoid valves. One output of time relay is connected with float transmitter controlling operation of milk pump. EFFECT: improved design. 1 dwg

Description

 The invention relates to devices for the primary processing of milk in the lines of milking installations, in particular for filtering and cooling milk in installations having an automatic system for removing milk from a vacuum, a milk pump, a tube filter and a plate cooler.

 Known devices for the mechanical purification of milk, namely a filter, method and device for membrane filtration of milk during milking.

 Of the known devices for the primary processing of milk, the closest in technical essence to the proposed one is a system for automatic control of the liquid filtration process with parallel filters, including two parallel filters, a pressure sensor with a converter, an actuator, pipelines for supplying and discharging liquid from the system, a control device and check valves.

 The most significant disadvantages of this device are the presence of a pressure sensor that controls milk, which leads to the ingress of milk into the sensor and reduce the reliability of the system.

 The purpose of the invention is to increase reliability and simplify the design.

 This goal is achieved by the fact that a time relay is introduced into the device, with one output connected to the input of the milk pump control unit, which is connected to the float sensor, the other time relay output is connected to the input of the electromagnetic valve block, one output of which is connected to actuators, and the other with a vacuum pump, and the time relay is configured for a specific duration of the pump in each cycle. As a result of contamination of the working filter, the pumping time increases, after which the time relay is activated and the backup filter is switched on.

 The backup filter of the time relay is activated, which gives the command to the solenoid valve block, which, in turn, gives the command to the pneumatically operated valves.

 The drawing shows the proposed device.

 The device contains milking machines 1, milk line 2, milk receiver 3 with float sensor 4, milk pump 5, actuators 6, milk filtration unit 7, working filter 8, plate cooler 9, milk storage tank 10, milk pump control unit 11, connected to the time relay 12, the solenoid valve block 13, a backup filter 14, check valves 15, a vacuum pump 16.

 The time relay 12 is connected by one output to the input of block 11, which is connected to the float sensor 4 of the level, and by another output, to the input of block 13, one output of which is connected to actuators 6, and the other to the vacuum pump 16.

 The device operates as follows.

 Milk from milking machines 1 through milk pipe 2 enters the milk receiver 3, where it is separated from the air and pumped out by pump 5. The control unit 11 controls the operation of the milk pump 5, periodically turning the pump on and off by commands of the level 4 float sensor. At the beginning of milking, when the working filter 8 is still clean and its hydraulic resistance does not exceed the nominal value, the process of pumping milk proceeds normally. As the working filter becomes dirty, the performance of the milk pump 5 decreases and the milk receiver 3 overflows. At this point, the backup filter 14 is turned on, and the dirty working filter 8 is turned off. This operation is carried out on command from the milk pump control unit 11, in the magnetic starter circuit of which the contacts of the time relay 12 are included. If for one cycle the pumping time exceeds 1 min, then this means that the working filter 8 is clogged so that it must be changed, including the backup filter 14. The switching takes place via the time relay 12, block 13 of the electromagnetic valves, mechanisms 6 and check valves 15, which together with filters 8 and 14 form a milk filtration unit 7. The valve (actuator 6) located at the inlet of the working filter 8 closes, stopping the flow of milk through it, and the valve of the backup filter 14 opens, allowing milk to pass through the clean filter, supplying it to the cooler 9 and then to the reservoir 10 for collection and storage milk.

 The proposed device eliminates technological failures in the line of primary milk processing at milking plants with a milk pipe, which increases the reliability of their work, improves the quality of milk and reduces its loss due to under-feeding of cows during emergency shutdown of milking machines due to overfilling of the milk receiver due to clogging of the filter with contaminants located in milk.

Claims (1)

 A DEVICE FOR PRIMARY PROCESSING OF MILK IN MILKING UNITS, containing milking machines, a milk pipe, a milk receiver with a float sensor, a milk pump, a milk pump control unit, parallel working and backup filters with actuators at the inlets and check valves at the outlets, a milk storage tank, plate cooler, vacuum pump, characterized in that, in order to increase reliability in operation and simplify the design, a time relay is introduced into it, with one output connected to the input of a milk pump control unit which is connected with a float sensor, other output time switch connected to the input of the solenoid valve, one output of which is connected with the actuators, and the other - with a vacuum pump.

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