JPH0839295A - High pressure liquid processing equipment - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] The present invention relates to a high-pressure liquid processing device for high-pressure sterilization or physical property change of liquid or pasty foods, pharmaceuticals, and other objects to be processed. [Structure] A pressurizing container 10 is composed of a cylindrical body 1, an upper lid 2, a lower lid 3, a yoke frame 4, and a free piston, and a liquid to be treated 30 is supplied into the same container 10 to perform a pressure treatment. Three
Reference numeral 1 is a low-pressure pump for supplying and discharging a liquid to be treated, and 20 is a pressurizing device, which supplies a liquid to be treated 30 by a low-pressure pump 31 below the free piston 5 in the pressurizing container 10 to perform pressure treatment above the free piston 5. After sending the used liquid to the next process, the pump is stopped, the hydraulic pressure is applied to the head side of the low-pressure cylinder 12 of the pressurizing device 20 to operate the high-pressure piston 13, and the liquid to be treated in the same cylinder 11 is pressurized at a high pressure. Pressurize.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-pressure liquid processing apparatus for high-pressure sterilizing or changing the physical properties of liquid or pasty foods, pharmaceuticals and the like in a high-pressure container.

[0002]

2. Description of the Related Art FIG. 5 is a vertical cross-sectional view showing the outline of a conventional high-pressure liquid processing apparatus, in which (a), (b),
(C) and (d) show one pressure treatment step of the liquid to be treated.

In the figure, reference numeral 40 denotes a pressure vessel, which has a cylindrical body 41, an upper lid 42, a lower lid 43, a free piston 44 which moves liquid-tight in the cylindrical body 41 in the vertical axis direction, and an upper lid 4.
2 and a yoke frame (not shown) that supports the lower lid 43.

Reference numeral 32 is a low-pressure pump for supplying the liquid to be treated, and the lower lid 4 via the liquid supply pipe 33 and the check valve 34.
It is connected to 3. A discharge pipe 36 is provided with a lower high pressure on-off valve 35.

Reference numeral 51 denotes a pressurized water tank, the upper part of which is connected to a check valve 56 with a pilot mounted on the upper lid 42 through a low pressure pressurized water return pipe 57 and an upper low pressure on-off valve 55, and a high pressure pressurized water return pipe 66. And upper high pressure on-off valve 65
Is connected to the upper lid 42 via.

Reference numeral 52 is a low-pressure pump, which is a pressurized water tank 5.
It is attached to the lower part of No. 1 and is connected to a check valve 56 with a pilot via a low pressure pressurized water supply pipe 53 and an upper low pressure on-off valve 54.

Reference numeral 62 is a high-pressure pump, which is a pressurized water tank 5.
It is attached to the lower part of the No. 1 and is connected to the upper lid 42 via a high pressure pressurized water supply pipe 63 and an upper high pressure on-off valve 64. A pressure gauge 67 is attached to the high-pressure pressurized water supply pipe 63.

Next, the operation of the apparatus will be described.
For example, the liquid to be treated 30 of fruit juice is pressure-treated in the next step.

First, as shown in FIG. 5 (a), one upper low-pressure on-off valve 55 and the check valve with pilot 56 are opened,
By operating the low-pressure pump 32 for supplying the liquid to be processed, the unprocessed liquid 30 is supplied from the liquid to be processed supply pipe 33 and the check valve 34 to below the free piston 44 in the pressurizing container 40 so as to be free. The piston 44 is lifted up so that the pressurized water (for example, drinking water) 50 above the free piston 44 is returned to the low pressure pressurized water return pipe 5
Return from 7 to the pressurized water tank 51.

Next, the low-pressure pump 32 is stopped, and as shown in FIG.
As shown in (b), one upper low-pressure on-off valve 55 is closed and one upper high-pressure on-off valve 64 is opened, and the high-pressure pump 62 is operated to supply the pressurized water 50 from the pressurized water supply pipe 63 to above the free piston 44. Then, pressure is applied while the pressure value is detected by the pressure gauge 67, and the liquid to be treated 30 is pressure-treated.

Next, as shown in FIG. 5 (c), the high pressure pump 62 is stopped, one upper high pressure on-off valve 64 is closed and the other upper high pressure on-off valve 65 is opened, and the pressurized water 50 is returned to the high pressure pressurized water return pipe. It returns from 66 to the pressurized water tank 51, and decompresses the to-be-processed liquid 30.

Next, as shown in FIG. 5D, the lower high-pressure on-off valve 35 and the other upper low-pressure on-off valve 54 are opened to operate the low-pressure pump 52, and the pressurized water 50 is supplied with the low-pressure pressurized water supply pipe 53 and the pilot. It is supplied from the check valve 56 to above the free piston 44 to lower the free piston 44, and the pressurized treatment liquid 30 is discharged from the discharge pipe 36 and sent to the next step.

[0013]

By the way, in the above-mentioned conventional apparatus, one pressurization treatment of the liquid to be treated 30 is performed.
The steps of (1) filling the pressurized container 40, (2) pressurizing operation, (3) pressurizing and holding, (4) depressurizing, and (5) discharging from the pressurized container 40 are limited, and the cycle time is limited. There was a problem with it.

A high pressure pump 6 for pressurizing the pressurized water 50.
2. Three types of pumps, such as a large-capacity low-pressure pump 52 for supplying the pressurized water 50 and discharging the liquid to be treated 30, a low-pressure pump 32 for a large container for the liquid to be treated 30 and returning the pressurized water 50, and an upper low-pressure valve 54. , 55, a non-return valve 56 with a pilot, a large number of valves such as upper high pressure valves 64 and 65 are required, and the low pressure pressurized water supply pipe 53, the low pressure pressurized water return pipe 57, the pressurized water supply pipe 6
3. Since the piping such as the high pressure pressurized water return pipe 66 becomes complicated,
There is a problem that the manufacturing cost and maintenance cost of the device become expensive.

The present invention provides a high-pressure liquid treatment apparatus capable of shortening the cycle time of pressure treatment of a liquid to be treated, reducing the number of pumps and valves, and simplifying the piping thereof. The purpose is to solve technical defects.

[0016]

As a structure for achieving the above object, a high-pressure liquid processing apparatus of the present invention is a pressure vessel comprising a cylindrical barrel and a pair of lids fitted to both ends of the cylindrical barrel, A high-pressure liquid treatment apparatus comprising a free piston installed so as to move in a liquid-tight manner in the axial direction of the cylinder in the pressurized container, wherein one of the free piston and the pressurized container in the pressurized container is A high pressure pressurizing and supplying means for the liquid to be treated, which communicates with a processing chamber surrounded by the lid of the pressure vessel, and both of the free piston in the pressure vessel and one or the other lid of the pressure vessel. It is characterized in that a low pressure supply / discharge means for the liquid to be treated is provided which is connected to the treatment chamber.

[0017]

In the processing apparatus of the present invention configured as described above, the liquid to be processed is pressure-treated in the next step.

First, the untreated liquid to be treated is supplied to the treatment chamber surrounded by the free piston in the pressure vessel and one lid of the pressure vessel by the means for supplying and discharging the treatment liquid to pressurize the free piston. The pressure-treated liquid to be treated is discharged from the processing chamber surrounded by the free piston and the other lid of the pressure container to the end portion on the other lid side in the container.

Next, the high-pressure liquid to be treated is supplied to the treatment chamber surrounded by the free piston and one of the lids of the pressure vessel to apply the high-pressure liquid to be treated to a predetermined treatment pressure. Press and hold for a period of time.

Next, the pressurization by the high pressure pressurizing and supplying means for the liquid to be treated is released to reduce the pressure of the liquid to be treated, and the untreated liquid to be treated is supplied to the free piston in the pressure vessel by means for supplying and discharging the liquid to be treated. It is supplied to a processing chamber surrounded by the other lid of the pressure vessel and the free piston is moved to the end portion on the one lid side described above, and the free piston is enclosed by the one lid of the pressure vessel. The liquid under pressure treatment in the treatment chamber is discharged from the pressure vessel.

Next, the liquid to be treated which has been pressurized to a high pressure by the liquid to be pressurized and supplied by the liquid to be treated is supplied to the treatment chamber surrounded by the free piston moved to the end portion on the one lid side and the one lid. The free piston is moved to the other lid side by the volume reduction required for high pressure pressurization in the pressure vessel, and the liquid to be treated supplied to the processing chamber surrounded by the free piston and the other lid of the pressure vessel is supplied. The pressure is increased to a predetermined pressure and maintained for a certain period of time to perform pressure.

Next, the pressurization by the high pressure pressurizing and supplying means for the liquid to be processed is released, the free piston is returned to the end portion on the one lid side to reduce the pressure of the liquid to be processed, and the unreacted liquid is supplied by the means for supplying and discharging the liquid to be processed. The liquid to be treated is supplied to the free piston in the pressure vessel and the processing chamber of one of the pressure vessels, and the free piston is moved to the other end of the pressure vessel on the lid side. The liquid to be treated which has been subjected to the pressure treatment in the treatment chamber surrounded by the other lid is discharged from the pressure vessel.

By repeating the above steps and supplying the liquid to be treated, which has been pressurized to a high pressure by the liquid to be pressurized and supplied to the liquid to be treated, to one side of the free piston in the pressure vessel, a pair of liquids to be treated is supplied. The liquid to be treated sequentially supplied to both sides of the free piston by the supply / discharge means is continuously pressure-treated.

[0024]

EXAMPLES The present invention will be described in detail below with reference to the examples shown in FIGS. 1 to 4 are vertical sectional views showing a schematic configuration and a pressure treatment process of a high-pressure liquid treatment apparatus, which is an embodiment of the present invention.

In these figures, 10 is a pressure vessel, which is a cylindrical body 1, an upper lid 2, a lower lid 3, an upper lid 2 and a lower lid 3.
And a free piston 5 that moves in a liquid-tight manner in the vertical axis direction inside the cylindrical body 1.

Reference numeral 31 is a low pressure pump for supplying and discharging the liquid to be treated, which is connected to the lower lid 3 via the lower low pressure supply pipe 22, the lower low pressure on-off valve 8, the lower check valve 9 and the common supply pipe 24. At the same time, it is connected to the upper lid 2 via the upper low-pressure supply pipe 21, the upper low-pressure on-off valve 6 and the upper check valve 7.

Reference numeral 20 denotes a pressurizing device, which includes a low pressure cylinder 12 and a high pressure cylinder 11 connected to a hydraulic device (not shown).
And a high-pressure piston 13. The high-pressure cylinder 11 is connected to the lower lid 3 via a high-pressure supply pipe 23 and a common supply pipe 24. The low-pressure cylinder 12 is connected to a hydraulic unit (not shown) by a head-side hydraulic pipe 16 and a piston-side hydraulic pipe 17, and a pressure gauge 18 is attached to the head-side hydraulic pipe 16.

Reference numeral 14 is an upper high-pressure on-off valve, and 25 is an upper discharge pipe, which is connected to the upper lid 2 and is also connected to the next step through a common discharge pipe 27.

Reference numeral 15 is a lower high-pressure on-off valve, and 26 is a lower discharge pipe, which is connected to the lower lid 3 and is connected to the next step through a common discharge pipe 27.

Next, as an operation of the present apparatus, for example, a pressure treatment process of the liquid to be treated 30 of fruit juice will be described.

As shown in FIG. 1, the lower low-pressure on-off valve 8 and the upper high-pressure on-off valve 14 are opened, the upper low-pressure on-off valve 6 and the lower high-pressure on-off valve 15 are closed, and the low-pressure pump 31 is activated to operate the liquid to be treated 30. The lower low pressure supply pipe 22, the check valve 9 and the common supply pipe 2
4 is supplied below the free piston 5 in the pressurizing container 10 to raise the free piston 5 and the pressurized treated liquid 30 above the free piston 5 is discharged from the upper discharge pipe 25 and the common discharge pipe 27. It is sent to the next process.

Next, as shown in FIG. 2, the low-pressure pump 31
Is stopped, the upper high-pressure on-off valve 14 and the lower high-pressure on-off valve 15 are closed, hydraulic pressure is applied to the head side of the low-pressure cylinder 12 of the pressurizing device 20 to operate the high-pressure piston 13, and the high-pressure cylinder 11
The liquid to be treated 30 in the cylinder body 1 is pressurized at a high pressure and supplied from the high pressure supply pipe 24 below the free piston 5, and the pressure on the head side of the low pressure cylinder 12 is detected by the pressure gauge 18. Pressurize 30 and hold for a certain period of time to apply pressure.

In this case, the pressure in the pressure vessel 10 is converted into the pressure in the low pressure cylinder 12 according to the area ratio between the low pressure side and the high pressure side of the high pressure piston 13. Further, the effective volume of the high pressure cylinder 11 is such that the liquid to be treated 30 in the high pressure cylinder 11 is pushed into the cylindrical barrel 1 and the liquid to be treated 30 in the cylindrical barrel 1 is sufficiently raised to a predetermined pressure. It is determined in consideration of the compression ratio of.

Next, the high-pressure piston 13 is returned to the original pressure to reduce the pressure, and as shown in FIG. 3, the lower low-pressure on-off valve 8 is closed and the lower high-pressure on-off valve 15 is opened. 30 is supplied to the upper side of the free piston 5 from the upper low-pressure supply pipe 21, and the free piston 5 is moved downward to pressurize the treated liquid 30 below the free piston 5 from the lower discharge pipe 26 and the common discharge pipe 27. It is sent to the next process.

Next, as shown in FIG. 4, the low-pressure pump 31
Is stopped, the upper high-pressure on-off valve 14 and the lower high-pressure on-off valve 15 are closed to operate the low-pressure cylinder 12, and the liquid to be treated 30 in the high-pressure cylinder 11 is supplied at a high pressure below the free piston 5 and the free piston 5 is removed. The liquid to be treated 30 above the free piston 5 is raised, pressurized, and held for a certain period of time to perform pressure treatment.

Next, similarly to the operation shown in FIG. 1, the low-pressure pump 31 is operated to raise the free piston 5, and the liquid to be treated 30 which has been subjected to the pressure treatment is discharged to the upper discharge pipe 25 and the common discharge pipe 27.
To the next process.

The present invention is not limited to the horizontal pressurizing device and the rigid pressurizing container of the above-described embodiment, but is also a rigid pressurizing container and the rigid pressurizing device, and the horizontal pressurizing container and the lateral pressurizing device. The present invention can also be applied to the pressure device, the horizontal pressure container, and the rigid pressure device.

[0038]

As described above in detail, according to the present invention, the liquid to be treated is connected (communicated) to the treatment chamber surrounded by the free piston in the pressure vessel and one lid of the pressure vessel. By providing high-pressure pressurizing and supplying means, and further, one and the other treated liquid low-pressure supply and discharge means connected to both processing chambers surrounded by the free piston and the lid of the pressurized container, the treated liquid By simply supplying the liquid to be treated under high pressure by the high-pressure pressurizing and supplying means to one side of the free piston in the pressurizing container, the pair of to-be-processed liquid low-pressure supply and discharge means sequentially supplies both sides of the free piston. The treated liquid can be continuously pressure-treated, and the treated liquid can be supplied and discharged simultaneously.

Therefore, the cycle time of the pressure treatment step can be greatly shortened to reduce the pressure treatment cost of the liquid to be treated, and the number of pressurization devices and on-off valves of the high-pressure liquid treatment device can be reduced, and the piping can be reduced. Since it can be simplified, the manufacturing cost and maintenance cost can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a schematic configuration and a pressure treatment process diagram of a high-pressure liquid treatment apparatus according to an embodiment of the present invention, showing a state in which a pressure-treated liquid to be treated is fed to the next process is there.

FIG. 2 is an explanatory view showing a pressure treatment state of a liquid to be treated in the treatment apparatus.

FIG. 3 is an explanatory diagram showing a state in which the liquid to be treated, which has been subjected to pressure treatment, is fed to the next step in the treatment apparatus.

FIG. 4 is an explanatory diagram showing a pressure treatment start state of a liquid to be treated in the treatment apparatus.

5A to 5D are vertical cross-sectional views showing a schematic configuration and a pressure treatment process of a conventional high-pressure liquid treatment apparatus.

[Explanation of symbols]

 1 Cylindrical Body 2 Upper Lid 3 Lower Lid 5 Free Piston 10 Pressurizing Container 11 High Pressure Cylinder 12 Low Pressure Cylinder 13 High Pressure Piston 20 Pressurizing Device 30 Treated Liquid 31 Low Pressure Pump

Claims (1)

[Claims] 1. A pressure vessel comprising a cylinder body and a pair of lids fitted to both ends of the cylinder body, and a pressure vessel, which is internally mounted so as to move in a liquid-tight manner in the axial direction of the cylinder body. In a high-pressure liquid treatment apparatus including a free piston, a high-pressure liquid supply unit for treating a liquid to be treated communicating with a treatment chamber surrounded by the free piston in the pressure container and one lid of the pressure container. A low-pressure supply and discharge means for the liquid to be treated is provided, which is connected to both processing chambers surrounded by the free piston in the pressure vessel and one and the other lids of the pressure vessel. High pressure liquid processing equipment.