JPH0459001B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing various beverage liquids, medicinal liquids, or other concentrated liquids by freezing and pressurizing them.

[Prior art] After freezing a solution and turning it into ice crystals, the ice crystals are pressurized to separate a large portion of the solute concentration in the ice crystals from the ice crystals.
Methods for obtaining concentrates have already been developed.

However, in conventional methods and devices, the tensile wire that pulls the ice crystals is moved upwards within the ice crystal forming cylinder, and as a result, although the processing capacity for recovering the concentrated liquid is not very good, do not have.

[Object of the present invention] The present invention is capable of improving the concentrated liquid recovery processing capacity by allowing the tensile wire rod that pulls the ice crystals to move downward, and also allows Furthermore, by closing the lower part of the ice crystal forming cylinder with crushed ice, it is possible to eliminate the need for a closing mechanism such as a valve in the lower part of the cylinder before starting.

[Means of the present invention] The main means of the method of the present invention is to connect a pressurizing cylinder with a tapered hole to the lower part of a vertical cylinder having an upper cooling part and a lower cooling part, and to connect a pressurizing cylinder with a tapered hole to the lower part of the vertical cylinder having an upper cooling part and a lower cooling part. A pressurized frozen concentrated liquid production device is used, in which a drain pipe for liquid recovery is connected, and a tensile wire for pulling ice crystals is moved downward inside the cylinder and pressurizing cylinder. The inside of the cylinder is filled with crushed ice up to the height of the lower cooling part of the cylinder, and the inside of the cylinder is closed with ice.Then, the mother liquor is poured into the cylinder from the upper part, and the mother liquor is frozen in the upper cooler of the cylinder. After the tensile wire is turned into ice crystals, the tensile wire is moved downward, and the ice crystals in the pressurized cylinder are pressurized by the tapered hole, thereby separating the solute-rich part of the ice crystals, and the separated concentrated The present invention is characterized in that the liquid is appropriately collected from the drain pipe.

[Example] An example of the present invention will be described with reference to a specific example shown in the accompanying drawings.

FIG. 1 is an overall view of the apparatus used in the method of the present invention, in which a pressurizing cylinder 3 having a tapered hole as a pressurizing section is connected to the bottom of a vertical cylinder 2, which is a cooling section and has a mother liquor container 1 at the top. and cylinder 2
and the pressurizing cylinder 3 are connected with a heat insulating material 6 interposed between the flanges 4 and 5 of both.

Further, a tank 7 having a drain valve V at the bottom is provided at the bottom of the pressurizing cylinder 3, and a tensile wire 8 such as a chain, which is endlessly fed, is passed from a hole at the bottom of the mother liquor container 1 to the cylinder 2, It passes through the pressurizing cylinder 3 and enters the tank 7, is reversed upward by the wheel 9 inside, is driven by the drive wheel 10, passes through the intermediate guide wheels 11 and 12, and is fed from the supply wheel 13 to the mother liquor container 1, as described above. It is designed to be sent to cylinder 2.

The cylinder 2 is provided with jackets 14 and 15, which are two upper and lower cooling parts.
7a is an inlet for each cooling medium, 16b and 17b
indicates each same exit.

A jacket 18 is also provided on the pressurizing cylinder 3, which is a pressurizing body, and reference numerals 19a and 19b indicate respective inlets and outlets for fluid.

A drain pipe 20 for recovering concentrated liquid is connected to the upper surface of the pressurizing cylinder 3, that is, the upper part of the tapered hole.

In this device, the solution in the cylinder 2 from the mother liquor container 1 is frozen into ice crystals 22 by the cooling medium flowing through the jacket of the cylinder and is bonded to the tensile wire 8.

The tensile wire 8 is driven to descend within the cylinder 2, thereby causing the ice crystals to also descend.

The ice crystals that passed through the cylinder together with the tensile wire
It enters the next pressurizing cylinder 3, where it is squeezed and pressurized by the inner surface of the tapered hole of the pressurizing cylinder.

This pressurization lowers the freezing point of the ice crystals, and the ice crystals melt from the area with high solute concentration, and the melted concentrated liquid flows from the area where the pressure on the ice crystals is high to the area where the pressure is low, that is, the lower part of the tapered hole. The liquid then moves to the upper inlet side and is collected from the drain pipe 20 into a collection container (not shown).

In the above-mentioned apparatus, before ice crystals are formed in the cylinder 2, it is necessary to close the lower part of the cylinder, and after this closure, a solution is poured into the cylinder to cause it to crystallize.

The method of the present invention makes it possible to close the blockage without using an opening/closing mechanism such as a valve. With the medium flowing, crushed ice is introduced into the pressurizing tube 3 and the cylinder 2 up to the height of the upper part of the jacket 15, which is the lower cooling part of the cylinder, thereby closing the lower part of the cylinder 2.

At this time, in order to make the blockage more effective and reliable, relatively coarse crushed ice 21a is first put in from above, and then finely crushed ice 21b is placed on top of it, and the finely crushed ice is used to fill the emptiness of the coarsely crushed ice. Just fill it in.

After the inside of the cylinder is largely closed with crushed ice in this manner, a cooling medium is allowed to flow into the upper jacket 14 of the cylinder, and a solution is slowly injected into the mother liquor container 1 to fill the inside of the cylinder 2 with the same solution.

This causes the solution to fill the voids in the crushed ice and form ice crystals 22 covering the tensile wire.

When ice crystals 22 are formed, the tensile wire 8 is started by a signal from a timer or the like, thereby separating a solute-rich portion within the pressurized cylinder and taking it out as a concentrated liquid.

[Effect] As described above, according to the present invention, the ice crystals formed in the cylinder are forcibly lowered and passed through the pressurized cylinder, and the solute in the ice crystals is separated by the pressure applied. In a method using a pressure freeze concentrator,
There is no need to provide a closure opening/closing mechanism before starting at the lower part of the cylinder, and it is possible to provide a pressurized freeze concentrator with low equipment cost.

[Brief explanation of drawings]

FIG. 1 is a front view showing an example of an apparatus used in the method of the present invention, and FIG. 2 is a partially enlarged longitudinal sectional view. In the figure, 1... Mother liquid container, 2... Cooling cylinder, 3... Pressurizing cylinder, 4, 5... Flange, 6...
Insulating material, 7...tank, 8... tensile wire, 9-13...
... Wheels, 14, 15 ... Jacket serving as cooling section, 18 ... Jacket of pressurizing cylinder, 20 ... Drain pipe for liquid recovery, 21a ... Crushed ice, 21b
...fine crushed ice, 22...ice crystals.

Claims (1)

[Claims] 1. A pressurizing cylinder with a tapered hole is connected to the lower part of a vertical cylinder having an upper cooling part and a lower cooling part, and a drain pipe for recovering concentrated liquid is connected to the tapered hole of the pressurizing cylinder. The lower part of the cylinder is cooled into the pressurized tube and cylinder using a pressurized freeze concentrator which is connected to the cylinder and allows a tensile wire rod for pulling ice crystals to move downward inside the cylinder and pressurized tube. Fill the cylinder with crushed ice up to the height of the cylinder to close the cylinder with ice, then pour mother liquor into the cylinder from the top, freeze the mother liquor in the upper cooler of the cylinder, turn it into ice crystals, and then add tensile wire. In the initial stage, the ice crystals in the pressurized cylinder are pressurized by a tapered hole to separate the solute in the ice crystals, and the separated concentrated liquid is appropriately collected from the drain pipe. Method for producing ice-sealed concentrate. 2. Production of an initial ice-sealed concentrate in the method described in item 1, characterized in that the crushed ice is filled into the pressurized cylinder and the cylinder by first filling coarse crushed ice and then filling fine crushed ice thereon. Method.