RU209155U1 - Milk cooler - Google Patents

Abstract

The utility model relates to agricultural production and can be used on small dairy farms and milk collection points for collecting and cooling milk, as well as in the food industry when processing and storing liquid products. The technical result that can be achieved using the utility model is reduced to the creation of a milk cooling and storage unit, which is a thermally insulated housing with a milk container installed in it, and on it a pre-cooler designed to cool milk. The technical result is achieved using a milk refrigeration unit containing a thermally insulated housing in which a bath for milk with a stirrer is installed, and the formation of a coolant jacket with a device for its forced circulation between the walls of the housing and the milk container, as well as a refrigeration unit with an evaporator made from bent pipes, and is additionally equipped with a filling pipe with an expanded outlet part inserted into the lower part of the milk bath, a pre-cooler with a drain pipe located in the fuse cavity for uniform output of the coolant and a central pipe with spray nozzles built into it, providing intensive and uniform washing inner surface of the tank. 2 fig.

Description

Field of technology to which the utility model belongs

The utility model relates to agricultural production and can be used on small dairy farms and milk collection points for collecting and cooling milk, as well as in the food industry when processing and storing liquid products.

State of the art

To preserve the original quality of milk until its industrial processing, the primary processing carried out on farms is called upon. Its main element is cooling.

Known dairy refrigeration units designed to collect, cool and store milk at an optimum temperature of +4°C. They are made square, horizontally cylindrical (elliptical) with a hermetic top hatch or semi-cylindrical or vertically cylindrical, closed with a removable hermetic cover. Milk is cooled by a compressor-condenser unit by boiling freon directly in a tubular brazed bottom evaporator or in a slotted bottom evaporator, as well as by cooling water as an intermediate coolant and irrigating the bottom with a vortex self-rotating head (“Segner wheel”). Mixing in the milk container is carried out by propeller-screw agitator reflectors, rotated by a geared motor. The maximum number of agitators and reflectors on multi-ton long tanks is 2 pieces (RF Patent RU No. 2265322 C1, RF RU No. 2006132408 of 2006, RF RU No. 2007909 C1).

Listed known dairy refrigeration units have the disadvantage associated with the loss of quality of milk during its processing.

Closest to the proposed installation in terms of technical essence and the achieved effect is the CM-1200 milk cooling installation, which contains a thermally insulated housing with a milk container installed in it. In this case, the container is installed in the housing in such a way that a jacket for the coolant is formed between their walls. The shirt has a device for forced circulation of fluid. The milk container is equipped with a stirrer. The evaporator of the refrigeration unit of the installation is made of bent metal pipes in the form of a three-dimensional geometric body, evenly spaced throughout the volume, and placed in a jacket for cooling liquid (Patent SU No. 1814504 A3).

However, such an installation does not provide the required quality of milk due to the low rate of its cooling and the quality of container preparation, and also does not exclude mechanical impact and foaming during serving. This is due to the need to cool the milk through an intermediate pre-cooler designed to reduce the temperature of freshly milked milk before it enters the milk bath (gentle cooling). This eliminates the disadvantage when warm milk is mixed with cold milk without loss of quality. This analog has disadvantages in the absence of a tank washing system at the end of the technological process. At the same time, such an installation requires increased costs.

Utility Model Disclosure

The objective of the proposed utility model is to expand technological capabilities while maintaining quality indicators during the storage of milk and liquid products.

The technical result that can be achieved using the utility model is reduced to the creation of a device for cooling and storing milk, which is a thermally insulated housing with a container for milk installed in it, and on it - a pre-cooler designed to cool milk.

The technical result is achieved using a device for cooling milk, containing a thermally insulated housing, in which a bath for milk with a stirrer is installed with the formation of a jacket for cooling liquid between the walls of the housing and the milk bath and a device for its forced circulation, as well as a refrigeration unit with an evaporator made of bent pipes, the device is additionally equipped with a filling pipe with an expanded outlet part inserted into the lower part of the milk bath, a pre-cooler with a coil located in its cavity with inlet and outlet milk pipes, and a drainage pipe for uniform output of the coolant, while the mixer contains a central a pipe with spray nozzles built into it, providing intensive and uniform washing of the inner surface of the milk bath, and the outlet milk pipe of the pre-cooler is connected to the filling pipe located in the milk bath.

The use of the proposed device for cooling and storing milk will provide small milk farms, milk collection points and food industry enterprises with equipment that allows cooling and storing milk and liquid products while maintaining quality indicators.

Brief description of the drawings

In FIG. 1 shows a general view of a milk refrigeration device.

In FIG. 2 shows a general view of the milk precooler.

Implementation of the utility model

The milk cooling device consists of a thermally insulated tank 1, in which a milk bath 2 and an evaporator 3 of the refrigeration unit 4 are located. pipe 7. The milk bath 2 is equipped with a drain pipe 8 with a tap 9 and a paddle mixer 10, which is controlled by the speed of the electric motor 11, its central pipe 12 is equipped with spray nozzles 13 and is connected to the pipe 14 using a stuffing box 15 for supplying washing liquid. The precooler 6 consists of a body 16 covered with a cover 17, a coil 18 made of a copper pipe, with an inlet 7 and an outlet 19 of the milk pipes, and the body 16 is equipped with a water supply 20 and a water outlet 21 pipes for the coolant. The water supply pipe 20 of the precooler 6 is connected to the electric water pump 5 by means of a pipeline 22 for the coolant, and the drain pipe 23 is connected to the water outlet pipe 21. The outlet milk pipe 19 of the precooler 6 is connected to the filling pipe 24 located in the milk bath 2.

Device for cooling and storing milk works as follows. 1 ... 1.5 hours before the start of milking, the device is turned on in the "Cold accumulation" mode. The evaporator 3 of the refrigeration unit 4 takes heat from the water, providing its cooling, and the circulation of water by the electric pump 5 contributes to the intensification of the water cooling process.

Before starting milking, the device is switched to the “Milk Cooling” mode. Freshly milked milk from the device is supplied through the inlet pipe 7 to the coil 18 of the pre-cooler 6, where it is cooled with ice water pumped through the pipeline 22 to the water inlet pipe 20 by an electric pump 5. 1. The drain pipe 21 is located in the upper part of the pre-cooler 6 at a distance of 4 cm from the cover 17, screwed to the housing 16, thus, there is a uniform replacement of the used coolant. Pre-cooled milk from the coil 18 of the pre-cooler 6 through the milk outlet 19 and the filling pipe 24 enters the milk bath 2, where it is finally cooled to a temperature of +4 ... 6 ° C and stored until it is sent for processing. The milk to be heat treated is fed through the filling pipe 24 to the lower part of the universal tank 1, which, together with its expanded part at the outlet, eliminates mechanical impact and milk foaming.

To intensify the cooling process, milk is mixed in a milk bath 2 with a paddle mixer 10 driven by an electric motor 11, and an electric pump 5 circulates cold water inside tank 1. and fat fractions, while maintaining the technological suitability of milk as a raw material for the production of dairy products.

Washing the milk bath is carried out during operation of the paddle mixer 10. The washing solution through the inlet pipe 14 is supplied under pressure through the stuffing box 15 to the spray nozzles 13 located in the central pipe 12, and, leaving its holes, provides intensive and uniform washing of the inner surface of the tank . Clean warm water is then pumped through the flushing system to remove any remaining cleaning solution.

The extraction of chilled milk, liquid products or washing liquid from the milk bath 2, located in the thermally insulated tank 1, is carried out when the tap 9 is opened through the drain pipe 8.

The use of the proposed device for cooling milk will allow you to cool and store milk and liquid products while maintaining quality indicators.

Claims (1)

A device for cooling milk, comprising a thermally insulated housing in which a bath for milk with a stirrer is installed with the formation of a jacket for cooling liquid between the walls of the housing and the milk bath and a device for its forced circulation, as well as a refrigeration unit with an evaporator made of curved pipes, characterized the fact that the device is additionally equipped with a filling pipe with an expanded outlet part inserted into the lower part of the milk bath, a pre-cooler with a coil located in its cavity with inlet and outlet milk pipes, and a drainage pipe for uniform output of the coolant, while the mixer contains a central pipe with spray nozzles built into it, providing intensive and uniform washing of the inner surface of the milk bath, and the outlet milk pipe of the pre-cooler is connected to the filling pipe located in the milk bath.

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