WO2009157094A1

WO2009157094A1 - Method and device for producing a vacuum intermittently

Info

Publication number: WO2009157094A1
Application number: PCT/JP2008/062039
Authority: WO
Inventors: 緑徳雄; 高原英一
Original assignee: Midori Norio; Takahara Eiichi
Priority date: 2008-06-26
Filing date: 2008-06-26
Publication date: 2009-12-30

Abstract

Provided is a device of the so-called 'Torricelli's vacuum experiment', in which a liquid flows. This device is enabled to establish a vacuum state intermittently with the gravitational force by using a liquid, the atmosphere and pipes. The used liquid can be subjected to continuous evacuations. A valve (4) is closed to fill a pressure-reducing pipe (1), a filling pipe (2) and an evacuating pipe (3) with the liquid. After this, the valve (4) is opened to establish a vacuum in the upper portion of the pressure-reducing pipe. The liquid is continuously fed by a pump (5), so that the liquid is continuously evacuated. If the gas accumulates in the pressure-reducing pipe during the continuous run so that the vacuum becomes weak, the valve (4) is again closed to fill the liquid and to evacuate. These operations are repeated. Depending upon the purpose, the device operates not only in a liquid of a high viscosity but also in a liquid having solid contents. By changing the specifications and adding the devices for the intended purpose, the device can also be used for the operations of sewage treatment, cooling, vacuum impregnation, vacuum deaeration, vacuum distillation or the like.

Description

Method and apparatus for intermittently creating a vacuum Technical Field

The present invention relates to a method and an apparatus for creating a vacuum intermittently by the action of gravity using a liquid or liquid, an atmosphere and a tube. Technical background

Currently, it is used in industries and products such as drying and concentration of chemicals and foods, impregnation of coils with insulating materials or impregnation of lubricants in bearings, production of thin films for electronic equipment, molding of resin and concrete, degassing of boiler water, etc. Various vacuum technologies have been developed and used. Many of them are vacuums created using a lot of energy, such as vacuum pumps and high pressure nozzles. Among them, vacuum pumps are now the mainstream of vacuum technology because they can handle low vacuum for rough materials and high vacuum for precision equipment, and the layout of the system is also flexible.

Also, in the so-called Torricelli vacuum experiment, which is the origin of the present invention, it was not considered that the liquid would flow. The vacuum generation principle is used in some vacuum gauges. Disclosure of the invention

Problems to be solved by the invention

At present, the batch type using a vacuum pump, which is widely used for vacuum processing of liquids or liquids, is limited in terms of the capacity of the vacuum vessel and the time required to evacuate the vacuum vessel to the target pressure. In some cases, it was difficult to use.

The present invention was made to solve these problems, and moreover, depending on the liquid used in the present invention, it was made to utilize various phenomena such as boiling, evaporation, and cooling due to reduced pressure in the industry. It is a thing. Means for solving the problem

Provided is a method and an apparatus characterized in that a low vacuum is intermittently created by the action of gravity by using a liquid or liquid and the atmosphere and a tube, and the liquid or liquid flows.

The invention's effect

The present invention is simple in construction as a method for creating a vacuum and does not require a special machine. For this reason, there is little malfunction due to failure, simple maintenance and inspection, and a vacuum can be created at low cost. In addition, it is possible to continuously vacuum process the liquid or liquid used, and it can operate not only on a single type but also on mixed liquids or liquids mixed with different types. To do. Furthermore, the present invention can be used for sewage treatment, cooling, vacuum impregnation, vacuum deaeration, vacuum distillation and the like by changing the specifications according to the purpose and adding an apparatus.

Brief Description of Drawings

FIG. 1 is a basic configuration diagram of the present invention.

FIG. 2 is a block diagram for processing a liquid from another untreated liquid tank in the present invention.

FIG. 3 is a configuration diagram using a vacuum valve in the present invention.

FIG. 4 is a schematic diagram of installation when sewage treatment is performed on water using the present invention.

FIG. 5 is a block diagram when the present invention is used as a chiller.

FIG. 6 is a block diagram when an article is vacuum processed in the present invention.

FIG. 7 is a configuration diagram in which a vacuum pump, a stirrer, and a three-way valve are attached to the present invention.

Explanation of symbols

1 Pressure reducing tube

2 Injection tube

3 Exhaust pipe

4 Valve

5 Transfer pump

6 Sensor for detecting full liquid

7 Sensor for measuring the degree of vacuum 8 Reservoir

9 Untreated liquid tank

1 0 Vacuum Lev

1 1 Ejecta '

1 2 Plunger

1 3 Crank

1 4 Drainage pipe

1 5 Lifting device

1 6 goods

1 7 Vacuum pump

1 8 Stirrer

1 9 Three-way valve

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 illustrates the basic configuration of the present invention.

Put the lower end of the decompression pipe 1 long enough to create a vacuum by gravity into the liquid in the storage tank 8, and install a valve 4 below the liquid level in the storage tank at the lower part of the decompression pipe 1. A sensor 7 for measuring the degree of vacuum is attached to the upper part of the pressure reducing pipe 1, and an injection pipe 2 with a transfer pump 5 and an exhaust pipe 3 that reaches the storage tank 8 are connected. A sensor 6 for detecting full liquid is installed near the exhaust port of the exhaust pipe 3.

The basic operation of this apparatus will be described.

Close the valve 4 and pour liquid from the injection pipe 2 to the decompression pipe 1 with the transfer pump 5. The gas in the pressure reducing pipe 1 is discharged from the open exhaust pipe 3 to the storage tank 8 in exchange for the liquid. When the inflow progresses and the sensor 6 detects that the liquid in the pressure reducing pipe 1 and the exhaust pipe 3 is full, the valve 4 is opened. Then, a vacuum is created in the upper part of the pressure reducing tube 1 by the weight of the liquid. The liquid continued to be fed by the pump 5 passes through the vacuum part and returns to the storage tank 8 through the opening at the lower part of the pressure reducing tube 1.

If the operation is continued continuously, the negative pressure will decrease due to the gas dissolved in the liquid and the gas coming out of the individual mixed in the liquid. Negative pressure reduction was attached to the vacuum part of the vacuum tube When the sensor 7 detects, the valve 4 is closed and the gas is exhausted from the exhaust pipe 3 again. When exhaust is completed and sensor 6 detects that the liquid in pressure reducing pipe 1 and exhaust pipe 3 is full, valve 4 is opened.

By this operation, the apparatus maintains the vacuum state intermittently.

FIG. 2 is a configuration diagram in which the present invention is installed so that there is little difference in liquid level between the storage tank 8 and the untreated liquid tank 9 in order to separate the vacuum-treated liquid and the untreated liquid. The untreated liquid that comes out of the exhaust pipe during exhaust is returned to the untreated liquid tank 9.

FIG. 3 is a configuration diagram in which a vacuum valve 10 is attached instead of extending the exhaust pipe 3 to the storage tank depending on the installation environment and liquid of the present invention.

Figure 4 is an installation schematic diagram of an application example in which the entire device floats on the surface of the water. Takes in the water near the bottom and the surface of the lakes and bays where water is not well distributed and vacuums it.

FIG. 5 is a block diagram when the present invention is used as a flicker. Synchronize the up-and-down movement and flow of the liquid by the plunger 1 2 and the crank 1 3 and the opening and closing of the vacuum valve 10, and repeat depressurization and exhausting intermittently at an appropriate temperature. Air adiabatically expands in the vacuum, and the ejector 1 1 1 cools the liquid and circulates the liquid. FIG. 6 is a configuration diagram in which the opening of the valve of the pressure reducing pipe is widened to allow the goods 16 to enter and exit according to the present invention. An elevating device 15 is provided in the tube to move the goods to the vacuum.

FIG. 7 is a configuration diagram in which a vacuum pump 17 instead of the exhaust pipe 3, a stirrer 18, and a three-way valve 19 are attached to the present invention. Continuous degassing of highly viscous liquids or liquids is possible. Industrial applicability

The vacuum state, which has been expensive in terms of energy consumption, can be used at low cost. In addition, continuous vacuum processing of liquids or liquids is possible compared to batch systems that use only vacuum pumps. Since the boiling point is further reduced by this reduction, some liquids and liquids can be processed using boiling and evaporation at lower temperatures.

As a specific example, in the present invention, wastewater mixed with microorganisms can be subjected to vacuum treatment, and the cell walls of microorganisms can be continuously destroyed by decompression and boiling. In the present invention, by introducing air into the decompressed space and adiabatic expansion, the liquid can be cooled and used as a chiller. In the present invention, Continuous vacuum impregnation with liquid materials in porous products, such as adding preservatives to wood or seasoning foods. According to the present invention, vacuum deaeration can be continuously performed for the purpose of preventing oxidation, preventing foam generation, and deodorizing food, oil, resin, circulating water, raw concrete, and the like. By utilizing the fact that the boiling point is lowered by decompression, a liquid or a liquid can be continuously vacuum distilled by attaching a vacuum pump and a distiller to the apparatus of the present invention.

Claims

A liquid or liquid material that has been devised to flow a liquid or liquid material by attaching a valve to a pipe long enough to create a vacuum and connecting an injection pipe and a discharge pipe with a transfer pump. And apparatus for creating a vacuum state intermittently by the action of gravity using the atmosphere and tubes.

A pipe is attached to a pipe long enough to create a vacuum, and an injection pipe with a transfer pump and a vacuum valve are connected, and the liquid or liquid and air are devised to flow. And apparatus for creating a vacuum state intermittently by the action of gravity using a tube.

A vacuum valve and a transfer pump are attached to a pipe long enough to create a vacuum, and it is devised to flow a liquid or liquid. Intermittently by the action of gravity using a liquid or liquid, the atmosphere, and a pipe. And apparatus for creating a vacuum state.