RU2165691C2 - Apparatus for vacuum cooling of water in animal farms - Google Patents

Abstract

FIELD: agriculture and food-processing industry. SUBSTANCE: apparatus has vacuumized cylindrical milk vessel (evaporator) made in the form of vacuum-tight cylindrical vessel with spiral pipe mounted inside it. Spiral pipe is connected to milk pump and storage vessel. Float valve is mounted on side wall of cylindrical reservoir below drop baffle positioned in upper part of cylindrical reservoir. Rotary part of float valve closes opening connected to farm water supply system. Apparatus is further provided with water reservoir connected to pump and to ejector water channel. Natural cold source is connected to water reservoir and further via vacuum-tight devices to upper and lower parts of cylindrical vessel and water pump. Apparatus may be used for cooling milk and other liquids. EFFECT: reduced metal usage, convenient maintenance, reduced maintenance costs, reduced weight and sizes. 1 dwg

Description

 The invention relates to the field of agriculture, in particular to devices for vacuum cooling of milk and other liquid food products in agricultural enterprises, and can be used in the food industry.

 Known devices for vacuum cooling products in livestock farms and food industry enterprises.

 A device is known for vacuum milking and cooling milk on livestock farms, comprising a milk tank, two vacuum pumps, an air separator, a condenser, a controlled milk quantity sensor in the air separator (SU 662044, A 01 J 5/00, 05.15.79).

 The disadvantage of this device is the loss of milk and a change in its physical characteristics, because it is "cold" boiling, as well as a large material consumption and cost of the device, because vacuum tanks of large capacity and strength are used.

 A device is known for vacuum cooling milk on livestock farms, containing a vacuum-tight vessel, an ejector connected by a connecting pipe to the vessel, a pump, a water tank connected to a pump connected to the water channel of the ejector, and communicated with a source of natural cold (RU 2089061 C1 , A 01 J 9/04, 09/10/97). This device is the closest to this invention in technical essence. It provides vacuum cooling of the water, which is then used to cool the milk in a separate heat exchanger. The milk itself is not exposed to vacuum, therefore its physical properties do not change.

 A disadvantage of the known device is the presence of a separately installed flow-through heat exchanger for milk, which is an expensive apparatus made of stainless steel. This heat exchanger occupies an additional production area and requires periodic manual flushing - a time-consuming operation. This entails additional energy consumption for heating the water and the washing solution.

 The technical result to which this invention is directed is to reduce the metal consumption of the device, increase the ease of maintenance, reduce operating costs, reduce weight and dimensions.

 To achieve this technical result, a device for vacuum cooling milk on livestock farms containing a vacuum-tight vessel, an ejector connected by a connecting pipe to the vessel, a pump, a water tank connected to a pump connected to the water channel of the ejector, and connected to a source of natural cold , characterized in that a spiral pipe is connected in the vessel connected to the milk pump, a droplet eliminator is located in the upper part of the vessel, and floaters are installed on the side wall below the droplet eliminator valve, the rotary portion which overlaps the opening connected to the farm water system, the water tank through a vacuum-tight device communicates with the upper and lower portions of the vessel.

 The invention is illustrated by the drawing, which schematically shows a device for vacuum cooling milk on livestock farms.

 The device comprises a vacuum-tight cylindrical vessel 1, an ejector 2, connected by a connecting pipe 3 through a vacuum pump 4 to a vessel 1, a water tank 5 connected by a pipe 6 to a pump 7, which is connected by pipelines 8, 9 to the water channel of the ejector 2. Tank 5 communicated with a source of 10 natural cold.

 In the vessel 1 is placed a spiral pipe 11 connected to a milk pump 12 and to a tank 13 for storing milk. A drop eliminator 14 is located in the upper part of the vessel 1, and a float valve 15 is installed on the side wall of the vessel 1 below the drop eliminator 14, the rotary part of which closes the hole connected to the farm's water supply system and filter 16.

 The tank 5 for water through a vacuum-tight device 17 is connected to the upper and lower parts of the cylindrical vessel 1. The water pump 7 by pipelines 8, 18 is connected to a source 10 of natural cold. On the pipelines 6, 9, 18, valves 19, 20, 21 are installed, respectively.

 The device operates as follows.

 In the warm season, water through a filter 16 and a float valve 15 enters a vacuum-tight heat-insulated cylindrical vessel 1. In it, a vacuum pump 4 is connected by a pipe 3 to an ejector 2, which is a source of preliminary vacuum, a residual pressure of the order of 4 torr (4 mm RT .st.).

 Water coming from the pipeline through the filter 16 and the float valve 15 is significantly overheated for this residual pressure. Under these conditions, the water "boils" throughout the volume and at the same time cools. After cooling the water in the cylindrical vessel 1, the milk pump 12 is turned on, which pumps the milk through a spiral pipe 11, where it is cooled and fed to the tank 13 for storage. A droplet separator 14 is installed in the upper part of the cylindrical vessel 1. When the water level drops, the float drops, the float valve 15 opens and an additional compensating amount of water enters the cylindrical vessel 1. Water from the water tank 5 through the faucet 19 enters the pump 7, and from there through the faucet 20 enters the ejector 2, creating a preliminary vacuum vacuum. The ejector 2 serves simultaneously as a capacitor. Then the water enters the tank 5 for water and the cycle closes.

 In the cold season, the valves 19 and 20 are closed, the vacuum-tight devices 17 open. The coolant (water) is cooled in the source of natural cold 10, enters the water tank, then through an open vacuum-tight device 17 it enters a vacuum-tight heat-insulated cylindrical vessel 1, cools the milk flowing through the spiral pipe 11, then flowing through the open lower vacuum-tight device 17, pump 7, valve 21, enters the source 10 of natural cold, from where it enters the water tank 5 and the cycle closes.

 Thus, milk is cooled throughout the year in warm and cold periods.

 In this device, the heat exchanger for milk is made in the form of a spiral pipe placed in a vessel for cooling water. It does not take up additional production space, is easy to maintain, and is washed circulating simultaneously with the milk pipeline, which does not require increased energy and labor costs.

 The presence of a float valve provides automatic compensation of evaporated water. The communication of the water tank associated with the source of natural cold, with the upper and lower parts of the vessel provides simultaneous effective cooling of water and milk due to the flow of water. This eliminates the need for a mixing device. The mixing and conveying functions are performed by essentially one pump. This reduces the material consumption of the device, reduces energy consumption, simplifies maintenance.

Claims (1)

 A device for vacuum cooling milk on livestock farms containing a vacuum-tight vessel, an ejector connected by a connecting pipe to the vessel, a pump, a water tank connected to a pump connected to the water channel of the ejector, and communicated with a source of natural cold, characterized in that a spiral pipe connected to the milk pump is placed in the vessel, a droplet eliminator is located in the upper part of the vessel, and a float valve is installed on the side wall below the droplet eliminator, the rotary part of which is closed There is a hole connected to the farm's water supply system, while the water tank is connected through the vacuum-tight devices to the upper and lower parts of the vessel.