SU1591891A2

SU1591891A2 - Milk cooling device

Info

Publication number: SU1591891A2
Application number: SU884381611A
Authority: SU
Inventors: Ivan N Bosin; Aleksandr P Loshkarev; Aleksandr N Morozov; Aleksandr P Kulakov
Original assignee: Univ Mordovsk
Priority date: 1988-02-23
Filing date: 1988-02-23
Publication date: 1990-09-15

Description

The invention relates to agriculture, in particular to devices for cooling milk on farms. The goal is to increase the reliability and performance of the device. The device includes a sprinkler 1 with a nozzle 2 mounted on

the support 3, the pallet 4, mounted on the frame under the irrigator; a drain pipe 5 for discharging chilled water connected to the sump in its upper part; a protrusion 6 fixed on the wall of the pallet on the inner side in front of the entrance to the drain pipe (in front of the drain hole); tank 7 with elastic walls, installed in the center of the pan below the drain hole and connected by ducts 8 and 9 flow through with ambient air; a water cooling tank 10 connected to the water pump 11 via a three-way valve 12; a heat exchanger 13 (a plate flow milk cooler) connected on one side to a water pump and on the other via a three-way valve 14 to a nozzle; source 15 artificial cold, connected through a three-way valve with a pump and a heat exchanger. 1 il.

ABOUT

Yu

1591891 A2

1591891

four

-. The invention relates to devices for cooling milk and can be used on farms in agriculture ..

The aim of the invention is to improve reliability and performance.

The drawing shows the proposed device for cooling milk, a General view.

The device for cooling milk includes sprinkler 1 with a nozzle 2 installed on a support 3; pallet 4 mounted on the frame. under irrigator; a pipe 5 for draining the cooled liquid connected to the pallet in its upper part; a protrusion 6 fixed on the wall of the pallet on the inner side before entering the pipe 5. In the pallet 4, below the entrance to the pipe 5 for draining the cooled liquid, a container 7 with elastic walls and air ducts 8 and 9 is installed for flow-through connection with the environment. The device includes a reservoir 10 for chilled water, connected to the water pump 11 through a 3-way valve 12; a heat exchanger 13 (a plate flow milk cooler) connected on one side to a water pump and on the other via a 3-way valve 14 to a nozzle; 15 source of artificial cold. connected via 3-way valves with pump and heat exchanger.

The device works as follows.

The autumn-winter season of operation of the device begins with filling the pallet 4 and the tank 10 with tap water. Prior to the beginning of the milking process and the in-line cooling of milk at minus outside air temperatures in the tray 4, natural cold accumulates in the form of ice water in the ice "coat", the level of which remains constant along the lower edge of the drain hole of the pipe for draining cooled liquid. With increasing thickness of the ice shell in the pan, the pressure of the closed water increases due to the difference in ice and water densities, which leads to compression of the container 7 due to the elasticity of the walls and thus prevents the destruction of the upper part of the ice shell and the wall of the pan. When the container 7 is compressed, the air from its cavity is forced out through the duct 8. As the temperature inside the container 7 is higher than the tempo. Ambient air patterns occur. convective direct-flow air flow (more warm air from the cavity of the tank moves upwards through the duct 8 to the outside, and it is replaced by cold outside air entering through the duct 9). This provides additional cooling.

water in the pan and increase the cyclic performance of the device. The working volume of the tank 7 is chosen in the position of the volume of the water frozen in the pan 4 and its coefficient of volume expansion during freezing.

Before starting to cool the milk, the 3-way valves 12 and 14 are set to the “Natural cold” position and the water pump 11 is turned on. In this case, the water moves in a closed loop; pump 11 - heat exchanger 13 - nozzle 2 - sprinkler 1 pallet 4 - pipe 5 - tank 10 - pump

11. Ice water at a temperature of 1-2 ° C cools the milk in the heat exchanger 13 and in the underheated state it is sprayed by the nozzle 2 in the sprinkler 1, where it is cooled by outside air. Additional cooling of the circulating water gets in the process of contact with the ice surface in the pan and with a temperature of 1-2 ° C flows through the pipe 5 into the reservoir 10. The cooling of a large amount of fresh milk is associated with the melting of ice in the pan. The destruction of the floating ice pieces in the pan and preventing them from closing the entrance of the pipe 5 to drain the cooled liquid is provided by the protrusion 6. After finishing the milking and cooling the milk, the pump 11 is turned off, and the water level in the pan is set along the lower edge of the pipe 5, this level is maintained during full freezing water in the pan.

With the onset of the season of positive outdoor temperatures 3-way valves 12 and 14 are transferred to the "Artificial cold" position and before cooling the milk is started up, the source 15 of the artificial cold and the pump 11. In this case, the water moves in a closed loop: pump 11 - heat exchanger 13 - source 15 artificial cold-pump 11.

The proposed device is more reliable in operation by eliminating the destruction of the pallet and by eliminating the freezing of the lower edge of the pipe to drain the cooled liquid, leading to a decrease in its throughput.

Claims

Claim

A device for cooling milk on the bus. sa № 1335214, characterized in that, in order to improve reliability and performance, it is equipped with a tank made of elastic walls and having air ducts for flow connection with the environment installed in the pan below the entrance to the pipe to drain the cooled liquid.