JPH02191507A - Pressure-type freeze concentrator provided with residual ice crystal removing mechanism - Google Patents

Abstract

PURPOSE:To produce a uniform-quality concentrated liq. by removing the residual ice crystal adhering to a high-tensile member passing through a pressurized cylinder and having a low content of a solute with an ice crystal removing device, and sending the high-tensile member freed of the ice crystal having a low content of the solute to a mother liquor vessel. CONSTITUTION:A vertical cooling cylinder 2 is provided with the mother liquor vessel 1 at its upper part and a cooling means for freezing at the lower part. The upper part of the pressurized cylinder 3 having a downward tapering hole is connected to the lower part of the cooling cylinder 2 through a heat insulating material 6. An endless high-tensile wire 8 passes through the cylinder 2, the pressurized cylinder 3, and a residual ice removing tank 7 from the hole bored in the bottom of the mother liquor vessel 1. Furthermore, a concentrated liq. recovery drain pipe 2 is connected to the tapering hole on the upper surface of the pressurized cylinder 3, and a device 25 for removing the ice crystal remaining on the wire 8 passing through the pressurized cylinder 3 is provided in the tank 7. As a result, the residual ice crystal depositing on the wire pulling the ice crystal is easily removed, and a uniform-quality liq. concentrate is produced.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pressurized frozen concentrate production apparatus for producing various beverage liquids, medicinal liquids, or other concentrated liquids, and more specifically relates to a pressurized frozen concentrate production apparatus for producing various beverage liquids, medicinal liquids, or other concentrated liquids. The present invention relates to a pressurized freeze concentrate manufacturing device that is capable of removing ice crystals remaining on a moving tensile wire.

[Prior Art] The so-called pressurized freeze concentration method involves once freezing a solution and pressurizing the frozen solid ice crystals to separate the solute-rich portion from the ice crystals to produce a concentrated solution. The freezing point (freezing point) of a solution depends on the concentration of the solution, but it also changes depending on the pressure applied to the solution.In other words, the freezing point decreases as the applied pressure increases. This technology focuses on the fact that the solute-rich part of the ice crystals moves from the high-pressure side to the low-pressure side inside the ice crystal.

[Objective of the present invention] The present invention can easily separate a solute-rich portion from ice crystals that have frozen a solution, and can realize industrialization. It is now possible to provide a pressurized frozen concentrated liquid manufacturing device that allows residual ice crystals to be easily removed.

[Configuration of the present invention] The main configuration of the pressurized frozen concentrate manufacturing apparatus according to the present invention is that a vertical cooling cylinder having a mother liquid container at the top and a cooling means for freezing has a tapered hole at the bottom thereof. The upper part of the pressurized cylinder having a In addition, a drain pipe for recovering concentrated liquid is connected to the tapered hole on the upper surface of the pressurizing tube, and the remaining ice crystal removal device is used to remove residual ice crystals from the tensile wire rod that has passed through the pressurizing tube. It is assumed that a device is installed.

[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 device according to the present invention, in which a pressurizing cylinder 3 having a tapered hole serving as a pressurizing portion is connected to the lower part of a vertical cylinder 2 serving as a cooling portion having a tank 1 for mother liquor at the top. There is.

The cylinder 2 and the pressurizing cylinder 3 are connected with a heat insulating material 6 interposed between the flanges 4.5 of both.

In addition, at the bottom of the pressurizing cylinder 3, a residual ice removal tank 7 provided at the bottom of the drain pulp Vle is disposed, and a tensile wire 8 such as a wire rod 8, such as a wire rod, which is sent to the bottom of the drain pulp Vle, is inserted into the hole at the bottom of the mother liquor container l. It passes through the cylinder 2 and the pressurizing cylinder 3, is driven by the residual ice crystal removal device block wheel 10, and is driven by the intermediate guide wheel 11.
．． 12 and from the supply wheel 13 as described above (mother liquor container 1. It is designed to be sent to cylinder 2.

The cylinder 2 has two cooling parts, upper and lower.
14 and 15 are provided, lea and 17a indicate inlets for each cooling medium, and 1flb and 17b indicate respective outlets.

A jacket 18 is also provided on the pressurizing cylinder 3, which is a pressurizing body, and a constant temperature medium for appropriately melting ice crystals, which will be described later, is flowed through this jacket. Indicates each entrance and exit.

A concave pocket 20 for storing liquid is provided on the upper surface of the pressurizing cylinder 3, that is, around the entrance of the tapered hole. It is connected to the liquid recovery container 22 by this.

The remaining ice crystal removing device includes a residual ice crystal removing cylinder 23 for removing crystals adhering to the tensile wire passed through the pressure cylinder, and a cylinder for removing crystals removed by this cylinder. A residual ice crystal removing device 25 consisting of a saucer 24 is provided.

The cylindrical body 23 has a structure that mechanically peels off and removes ice crystals attached to the tensile wire. In other words, as shown in FIG. In addition to making the remaining ice crystals the same shape as the cylinder so that they are forcibly separated from the tensile wire as they pass through the cylinder, if the tensile wire is a chain, the remaining ice crystals are In order to melt the ice crystals remaining in the
7 built-in, or as shown in Fig. 5, a coiled tube 28 through which a thermal fluid flows is wrapped around the outer periphery. Some options use hot gas from a compressor in a refrigeration unit that supplies refrigeration.

[Function] In this device, the solution in the cylinder 2 from the mother liquid container 1 is frozen into ice crystals 30 by the cooling medium flowing through the jacket of the cylinder.

It is coupled to the tensile wire rod 8.

The tensile wire 8 is driven to descend within the cylinder 2,
This also causes ice crystals to fall.

The ice crystals that have passed through the cylinder together with the tensile wire enter the next pressurizing tube 3, where they are squeezed and pressurized by the inner surface of the tapered hole of the pressurizing tube.

This pressurization lowers the freezing point of ice crystals.

The ice crystals melt from the area with high solute concentration, and the melted M liquid moves from the area where the pressure applied to the ice crystals is high to the area where the pressure is low, that is, from the lower side of the taper hole to the entrance side of the second part and into the pocket. The concentrated liquid in the pocket 20 is collected from the drain pipe 21 into the collection container 22.

In the apparatus of this embodiment, the cylinder 2, which is a cooling cylinder, and the pressurizing cylinder 3, which separates the concentrated liquid, are constructed separately, and a heat insulating material 6 is interposed at the connection between them. The cold air in the cylinder 2 is prevented from being transmitted to the pressurized tube 3, so that the separation of the solute-rich portion by the pressurized tube 3 is carried out without any inconvenience, and there is no risk that the separated concentrate may be refrozen. do not have.

In addition, since a pocket 20 is provided around the entrance of the tapered hole in the pressurizing cylinder 3, the a-condensate separated from the ice crystals in the pressurizing cylinder can be immediately collected in the pocket. liquid can be obtained.

The ice crystals remaining on the tensile wire rod that has passed through the pressurizing tube 3 are removed by the residual ice removal device 25 in the residual ice removal tank 7.

That is, the residual ice adhering to the outside of the tensile wire 8 is forcibly removed by mechanical action when passing through the cylindrical body 23.
In addition, when the tensile wire is a chain, ice crystals remaining in each ring constituting the chain without being mechanically removed are melted by the heat of the electric heater 27 and the thermal fluid passing through the coiled tube 28. removed.

The mechanically removed ice pieces are dropped into the tray 24 and discharged as ice pieces or as drain.

Further, the liquid melted by the heater or the like accumulates in the residual ice removal tank, and is drained by opening the drain valve V as appropriate.

The tensile wire from which residual ice has been removed in this way passes through the wheel and descends from the mother liquor container into the cylinder again, but the tensile wire that enters the mother liquor container does not have residual ice attached to it because it contains few solutes. , the mother liquor is not diluted by lingering disease.

In addition, by flowing a moderate constant temperature medium slightly higher than the freezing point of the mother liquor into the pressurized tube 3 (Jakela) +8, the surface of ice crystals is prevented from freezing on the inner surface of the pressurized tube, and the inside of the pressurized tube is It promotes the separation of viewing angles accompanied by melting and recrystallization between minute dense parts and thin parts inside the ice crystals, and controls the smooth movement of the ice crystals in the pressurized cylinder.

[Effects] According to the present invention, as described above, the cold air in the cylinder serving as the cooling cylinder is prevented from being transmitted to the pressurizing cylinder by the heat insulating material, so that the concentrated liquid is effectively separated by the pressurizing cylinder, and the pockets The concentrated liquid is recovered without any waste.

In addition, the ice crystal removal device removes residual ice that adheres to the tensile wire that has passed through the pressurized tube and has a low solute content. Since the solution is sent to the mother liquor container, it is possible to provide an industrially profitable pressurized frozen concentrate production apparatus that can obtain a concentrate of uniform quality without diluting the solution due to residual ice disease.

[Brief explanation of the drawing]

Figure TfS1 is a front view showing an example of the device according to the present invention, Figure 2 is a partially enlarged vertical sectional view, Figures 3 and 4 are a cross-sectional plan view of the cylinder for the residual ice crystal removal device, and Figure 5 The figure is also a construction drawing of the cylindrical body. In the diagram: ・Mother liquid container 2・・Cooling cylinder 3・・Pressure cylinder 4.5・Bottle flange 6・War insulation material 7
・Remaining ice crystal removal tank 8 ・Tensile wire 9 to 13 ・Fist wheel 14, 15 @ ・Jacket 18 as cooling part ・Jacket 208e of pressurized tube 21 ・Drain pipe 22
1 Collection container 23. Residual ice crystal removal cylinder 24. Receiver 25. Residual ice crystal removal device 2θ. Hole in cylinder 27. Electric heater 28. Coil tube

Claims (3)

[Claims] (1) The upper part of a pressurizing cylinder having a downwardly tapered hole is connected to the lower part of a vertical cooling cylinder having a mother liquid container at the upper part and a cooling means for freezing, through a heat insulating material, and an endless cylinder. The tensile wire rod is fed through a hole drilled at the bottom of the mother liquid container into the cylinder, the pressurizing cylinder, and the residual ice removal tank, and the concentrated liquid is fed into the tapered hole on the top surface of the pressurizing cylinder. Connect the recovery drain pipe,
A pressurized freezing and concentrating device with a residual ice crystal removing mechanism is provided in the residual ice removing tank, and a residual ice crystal removing device for tensile wire passed through a pressurizing tube is provided in the residual ice removing tank. (2) A pressurized freeze-concentrate production device with a mechanism for removing residual ice crystals, in which the residual ice removing device according to the invention described in item 1 is constituted by a cylindrical body with holes having the same cross-sectional shape as the tensile wire rod. (3) The tensile wire rod according to the invention described in item 1 is constituted by a chain, and the residual ice removing device is constituted by a cylinder having a hole having the same cross-sectional shape as the tensile wire rod, and a heater is provided in the cylinder. A pressurized freeze concentrator with a residual ice crystal removal mechanism.