WO2005108312A1

WO2005108312A1 - Fluid circulation system

Info

Publication number: WO2005108312A1
Application number: PCT/JP2005/008820
Authority: WO
Inventors: Isao Kataoka; Kenji Yoshida; Takahiro Ohnishi
Original assignee: Ohnishi-Mfg Co., Ltd.
Priority date: 2004-05-07
Filing date: 2005-05-09
Publication date: 2005-11-17
Also published as: JPWO2005108312A1

Abstract

A system for circulating fluid by floating/settling functional particles in a guide pipe to produce a flow in which stabilized operation effective for improving water quality in harbor, or the like, is ensured continuously without being affected by surrounding environment.

Description

Fluid circulation system Technical field

The invention of this application relates to a fluid circulation system. More specifically, the invention of the present application relates to a system for floating and settling functional particles in a guide pipe, causing a flow, and circulating a fluid. Background art

In recent years, water pollution due to water circulation has become a problem in closed water areas such as shallow seas, ports and lakes. The water circulation is caused, for example, by the heat of the sun in a harbor in summer or the like, which causes the entire bay to become a top surface heating system. In such a system, seawater at the bottom of the port does not decrease in density due to thermal expansion due to heating, so it does not generate buoyancy and natural convection does not occur. Therefore, thermal stratification is formed in the port, water circulation is lost between the lower and upper parts, and organic matter is deposited at the bottom of the port. Since a large amount of oxygen is consumed to decompose the accumulated organic matter, the low-rise water becomes anoxic or anoxic, forming a stagnant anoxic water mass. If this is prolonged, the seabed becomes an anaerobic (oxygen-free) environment, and the sediment becomes reductively decomposed, producing sulfides and turning black, releasing the odor of hydrogen sulfide. was there.

Therefore, in the above-mentioned top surface heating system, it is desired to generate convection and improve water quality by circulating water. Heretofore, as a fluid capable of generating convection in an upper surface heating system, for example, a fluid using a buoyancy variable solid particle group (Patent Document 1) has been proposed. In addition, the device comprises a shape memory alloy spring and a closed container that expands and contracts only in one direction. A device whose volume changes due to the change in the action of the shape memory alloy spring due to the degree change

These devices float in a fluid, such as a device (Patent Document 2) or a device consisting of a sealed container that can expand and contract only in one direction and contains a substance that evaporates at high temperature and condenses at low temperature (Patent Document 3). A method has been proposed in which convection is generated by repeated settling. There is also a method of improving water quality by circulating water using a pump or an air-ratio device.

Patent Document 1: Japanese Patent Application Laid-Open No. 2000-01-26 2 1 3 3

Patent Document 2: Japanese Patent Application Laid-Open No. 2000-308818

Patent Document 3: Japanese Patent Application Laid-Open No. 2001-333674 Disclosure of the Invention

However, the above-mentioned buoyancy variable solid particles and devices operate greatly depending on the temperature, and therefore, operate when the fluid into which these buoyancy variable solid particles and devices are mixed is a temperature stratification with a small temperature difference. Sometimes became dull or stopped. In addition, when the temperature stratification disappears due to the generation of convection by these devices, the operation of the device is stopped, there is a problem that convection cannot be constantly generated, and the fluid cannot be circulated.

Furthermore, since shape memory alloys have the characteristic of being transformed immediately when the transformation temperature is reached, when a shape memory alloy spring is used, it reacts as soon as it crosses the temperature boundary layer of thermal stratification. For this reason, in a system where the distance from the temperature boundary layer to the top or bottom of the system is large, there is a danger that the device will not reach the top or bottom, and convection cannot be generated efficiently, and There was a problem that it could not be circulated. In addition, when a flexible member such as a rubber bellows is used for the device, there is a problem that the operation is restricted or stopped at the deep bottom of the system where the water pressure increases. there were.

When using a pump or an air-ratio device, the device is large-scale. Therefore, there was a problem that installation was not easy and power consumption was large.

This application provides the following invention to solve the above-mentioned problems.

[1] A fluid circulation system in which at least one end of a cylindrical guide pipe is arranged vertically so as to be opened in a fluid, and one or more functional particles are operated in the guide pipe, A fluid circulation system characterized in that the functional particles repeatedly settle or float in the axial direction of the guide pipe, and circulate the fluid by the flow caused by the operation of the functional particles.

[2] A fluid circulation system, wherein a slit is provided on the side surface of the guide pipe.

[3] A fluid circulation system characterized in that the slits are provided in the longitudinal direction at both ends or the center of the guide pipe.

[4] A fluid circulation system wherein a plurality of functional particles are connected.

[5] A fluid circulation system characterized in that the above-mentioned functional particles are held by guide rails and repeatedly settle or float.

[6] In the fluid circulation system described above, a guide pipe having an open end is disposed outside the end of the guide pipe, and the flow inside and outside the guide pipe caused by the operation of the functional particles is guided to the guide pipe. A fluid circulation system that circulates fluid.

[7] The fluid circulation system described above, wherein a cylindrical fluid agitating blade having a lower end opening larger than the upper end is disposed at an end of the functional particle subjected to the C-plane processing. Fluid circulation system.

[8] The above-mentioned functional particles absorb the fluid into the functional particles or discharge the fluid out of the functional particles, adjust the weight of the functional particles, and buoyant the functional particles in the fluid. Sinking or ascending due to the balance between gravity and gravity A fluid circulation system.

[9] The above-mentioned functional particles are formed of a pump unit capable of controlling suction and discharge of a fluid, and a cell having a tank part for storing the fluid, wherein the pump unit is disposed in the cell and is provided outside the cell. A fluid circulation system characterized in that a fluid is sucked into a tank or a fluid in a tank is discharged out of a cell to adjust the weight of functional particles.

[10] The fluid circulation system, wherein the pump unit is fixedly arranged on a pedestal provided inside the cell.

[11] A fluid circulation system characterized in that a pressure sensor is provided for the above-mentioned functional particles, and the pressure sensor detects the water depth to control the suction and discharge of fluid to and from the tank. Brief Description of Drawings

FIG. 1 is a sectional view showing the concept of the fluid circulation system of the present invention. FIG. 2 is a schematic diagram of a fluid circulation system provided with a guide pipe. FIG. 3 is a schematic diagram for explaining the operation of the fluid stirring blade and the functional particles provided with the fluid stirring blade.

FIG. 4 is a cross-sectional view schematically illustrating one embodiment of the functional particles. FIG. 5 is a plan view and a front view schematically showing a guide pipe provided with a slit used in the third embodiment.

FIG. 6 is a diagram schematically showing a cross-sectional view of a functional particle and a guide rail in Example 4.

FIG. 7 is a front view schematically showing the side slit guide pipe and the center slit guide pipe used in the fifth embodiment.

FIG. 8 is a diagram showing the relationship between water temperature and time under the condition of experiment number 1 in Example 5.

FIG. 9 is a diagram showing the relationship between the water temperature and time under the condition of experiment number 2 in Example 5. FIG. 10 is a diagram showing the relationship between the water temperature and time under the condition of experiment number 3 in Example 5.

FIG. 11 is a diagram showing the relationship between water temperature and time under the conditions of experiment number 4 in Example 5.

FIG. 12 is a diagram showing the relationship between water temperature and time under the condition of experiment number 5 in Example 5.

FIG. 13 is a diagram for explaining a stirring mechanism when a side slit guide pipe or a center slit guide pipe is used. BEST MODE FOR CARRYING OUT THE INVENTION

The invention of this application has the features as described above. Hereinafter, embodiments of the invention will be described in more detail.

The fluid circulation system according to the invention of this application will be described with reference to FIG. 1. A cylindrical guide pipe (1) is arranged in a vertical direction such that at least one end of the guide pipe (1) is opened in a fluid (3). Functional particles (2) are installed in the guide pipe (1), and the functional particles (2) repeatedly settle or float in the axial direction of the guide pipe (1). The functional particles (2) may be plural. In this case, the individual functional particles (2) may be operated independently, or a plurality of functional particles (2) may be connected.

The length of the guide pipe is appropriately set depending on the conditions of the environment to be used and the basin to be circulated. The cross-sectional shape of the guide pipe is not particularly limited, but for example, a circular or polygonal shape may be considered. The material of the guide pipe is not particularly limited as long as it has excellent weather resistance and corrosion resistance.

The movement of the functional particles is controlled vertically by the guide pipe. When the functional particles settle, the fluid is dragged on the upper surface of the functional particles to generate a downward flow, and when the functional particles float, they are below the functional particles. The fluid is dragged at the end and an upward flow is generated. Guide pipes also control the direction of these flows. Thus, the fluid can be effectively flowed in the guide pipe by the vertical movement of the functional particles.

Further, the functional particles may be held and operated by the guide rail. For example, it is considered that the guide rail is provided vertically in the guide pipe, and the functional particles are moved up and down along the guide rail. Since the functional particles are held by the guide rails, the functional particles do not move in the horizontal direction during the vertical movement. Therefore, the functional particles can be operated stably, and the flow can be efficiently generated. As such a guide rail, for example, the cross section of the guide rail is formed in a convex shape, and a concave groove along the shape is provided in the functional particles. As a result, the functional particles move up and down with the concave grooves along the convex guide rails. When the shape of the functional particle is a cylindrical shape described later, a concave groove may be provided in the outer peripheral portion or the central portion of the functional particle. Further, there may be a plurality of guide rails.

When the guide pipe (1) is arranged so that both ends are open in the fluid (3) as shown in Fig. 1, when the functional particles (2) settle down, the guide pipe (1) descends inside the guide pipe (1). As a result, the fluid (3) outside the guide pipe (1) flows into the guide pipe (1) from the upper end so as to be dragged into the guide pipe (1), and the downward flow from the lower end of the guide pipe (1). Is released. Therefore, the fluid (3) outside the guide pipe (1) can generate a flow that flows upward from below. Also, when the functional particles (2) float, the ascending flow in the guide pipe (1) causes the fluid (3) outside the guide pipe (1) to flow from the lower end of the guide pipe (1) to the guide pipe (1). The upward flow is discharged from the upper end of the guide pipe (1). For this reason, the fluid (3) outside the guide pipe (1) can generate a flow that flows downward from above. By these operations, the fluid (3) outside the guide pipe (1) can be efficiently circulated. it can.

The guide pipe may be arranged so that at least one end is open in the fluid. For example, when the lower end of the guide pipe is placed in contact with the bottom of a port or the like and the lower end is arranged to close in the fluid, the upper end of the guide pipe is lower than the water surface and is opened in the fluid. Is considered. If the guide pipe is installed so that the lower end of the guide pipe is open in the fluid and does not contact the bottom of the port, the upper end of the guide pipe may protrude into the fluid or above the water surface, A guide pipe may be installed below the buoy floating on the water surface.

Further, a slit may be provided on the side surface of the guide pipe. Ascending and descending flows caused by the sedimentation and levitation of the functional particles in the guide pipe are released from the guide pipe through slits as needed, so that a flow can be induced in the fluid outside the guide pipe. The size, position and number of the slits are appropriately set, but it is particularly preferable to provide slits at both ends or the center of the guide pipe in the longitudinal direction of the guide pipe.

In the present invention, a guide pipe having an open end outside the end of the guide pipe may be provided. FIG. 2 is a schematic diagram of a fluid circulation system provided with a guide pipe. According to this figure, the guide pipe (12) is disposed so as to cover the end of the guide pipe (1). The shape of the guide pipe (12) is preferably such that the end on the guide pipe (1) side of the both ends of the guide pipe (12) has a larger open end, for example, a trumpet shape. Good. For example, when the functional particles (2) float, this upward flow is released from the upper end of the guide pipe (1). At this time, the fluid outside the guide pipe (1) is dragged by this upward flow, and a flow is generated upward from the lower end of the opening of the guide pipe (12). Then, the upward flow and the flow of the fluid outside the guide pipe (1) are released from the upper end of the opening of the guide pipe (12), and the fluid can be circulated efficiently. Further, in the present invention, a cylindrical fluid agitating blade having a lower end opening larger than an upper end may be provided at the end of the functional particle subjected to the C-plane processing. Fig. 3 (a) is a plan view and a front view of the fluid stirring blade (13), and Fig. 3 (b) is a cross section of the functional particle (2) provided with the fluid stirring blade (13). FIG. According to FIG. 3 (b), the ends of the cylindrical functional particles (2) are C-face processed, and the fluid stirring blades (13) are attached to both ends of the functional particles (2). ) Is arranged. Here, for example, the fluid stirring blade (13) may be provided with a plurality of claw-shaped mounting legs (14) on the C surface of the functional particles (2) and arranged on the mounting legs (14). It may be. FIG. 3 (c) is a diagram for explaining the fluid stirring effect of the functional particles (2) provided with the fluid stirring blades (13). According to Fig. 3 (c), the resistance of the functional particles (2) to the fluid can be reduced by the C-face machining on the working direction side of the functional particles (2) and the fluid stirring blade (13). Functional particles

(2) The fluid can efficiently flow backward. The fluid agitating blades (13) arranged on the side opposite to the operating direction of the functional particles (2) become the resistance of the fluid and reduce the amount of vortex generated behind the functional particles (13). Therefore, the stirring capacity can be increased.

Next, functional particles operating in the guide pipe will be described. The functional particles absorb the fluid into the functional particles or discharge the fluid outside the functional particles, adjust the weight of the functional particles, and increase the buoyancy and functionality of the functional particles in the fluid. The particles settle or float in proportion to the gravity of the particles. FIG. 4 (a) is a cross-sectional view schematically illustrating one embodiment of the functional particles. According to Fig. 4 (a), this functional particle

(2) consists of a pump unit (4) capable of controlling the reverse rotation of the suction and discharge of the fluid (3) and a cell (6) having a tank (5) for storing the fluid (3). The pump unit (4) is arranged in the cell (6) and is provided with a first suction / discharge pipe (7) and a second suction / discharge pipe (8) for suctioning / discharging the fluid (3). ing. The first suction and discharge pipe (7) is From the cell (4) through the through hole (10) provided in the cell (6)

(6) It has been pulled out. The second suction / discharge pipe (8) extends from the pump unit (4) to the tank (5). These suction and discharge pipes

(7) For (8), various types of rubber and resin hoses are considered, but a polyvinyl chloride hose is preferably used.

The tank (5) may be provided below the cell (6) as shown in FIG. 4 (a), but is not particularly limited to this position. In the tank (5), the fluid (3) outside the cell (6) is introduced by the pump unit (4).

The pump unit (4) is not limited as long as it can suck and discharge the fluid (3) and can control the reverse rotation. However, a rotary pump that can transport the fluid (3) with high efficiency is particularly preferable. Among them, a gear pump is preferable. In order to make the pump unit (4) waterproof, the motor unit or the entire pump unit (4) may be covered with, for example, a rubber cloth or a force par, or may be placed in an airtight container. Further, a pedestal (9) may be provided in the cell (6) at a middle position, and the pump unit (4) may be fixedly arranged on the pedestal (9). As a result, the operation of the pump unit (4) is stabilized, and the suction and discharge of the fluid (3) are surely performed. The position of the pedestal (9) is preferably provided above the tank (5) so that the motor of the pump unit (4) does not directly contact the fluid (3).

The shape of the cells (6) forming the functional particles (2) is not particularly limited, as spherical, cylindrical, polygonal, capsule, and various shapes are considered. Fig. 4 (a) illustrates a cylindrical functional particle (2). The material of the cell (6) is not particularly limited as long as it has excellent weather resistance, maintains sealing properties even in the fluid (3), and is not easily deformed. In addition, the functional particles (2) adjust the weight of the functional particles (2) by the suction and discharge of the fluid (3), and the buoyancy and functionality of the functional particles (2) in the fluid (3) Because the particles (2) float and settle in proportion to the gravity of the particles, the functional particles The material of the cell (6) and the size of the cell (6) are considered so that the gravity applied when the fluid (3) is not sucked into (2) is smaller than the buoyancy.

An external power supply or an internal power supply may be considered as the power supply for the pump unit (4). When an external power source is used, the functional particles (2) can be supplied stably for a long time and easily without a complicated structure. If an internal power source is used, such as a built-in rechargeable battery, the functional particles (2) will have their own power supply, so the functional particles (2) must be installed in the fluid circulation system. Is easy. In addition, even in the event of a power failure, the functional particles in the fluid circulation system

(2) The whole is not affected.

As a method for controlling the functional particles (2), for example, the switch of the pump unit (4) is switched by a timer operation, and the forward (reverse) drive, reverse drive, and stop of the pump unit (4) are used to control the fluid (3) Control of suction, discharge and stop may be performed. By setting the timer to an arbitrary time in advance, the suction and discharge of the fluid (3) can be controlled, and the functional particles (2) can float and settle at an arbitrary time. This also adjusts the sedimentation distance (floating distance) of the functional particles (2). For example, in the environment where the particles are used, even if the fluid (3) has a different depth, it can be easily applied. Can be. As another control method of the functional particles (2), for example, as shown in Fig. 4 (b), a pressure sensor (1 1) is installed inside the functional particles (2) to detect the water depth. This pressure sensor (1 1) allows fluid to flow into the tank (5).

The suction and discharge of (3) may be controlled. In addition, the position of the functional particles (2) can be recognized by detecting a magnetic substance (for example, a permanent magnet) incorporated in the end of the guide pipe (1) using a magnetic sensor incorporated in the functional particles (2). Or control the functional particle (2) by providing a push switch on the functional particle (2) and making contact with the end of the guide pipe (1) to recognize the position of the functional particle (2) It is also considered. Rice cake Alternatively, the above methods may be used in combination.

The invention of this application has the above-mentioned features, and will be described in more detail with reference to examples below. Example

In a cylindrical experimental water tank (inner diameter 900 mm, height 1200 mm, water volume about 700 L), electric power (DC 12 V) was supplied to the functional particles from above the water by electric wires (covered wire) while the guide pipe was suspended. I went.

The specifications of the guide pipe and the functional particles are as follows.

Guide pipe dimensions: Pipe inside diameter 190mm Outside diameter 200mm, Pipe total length 1000mm

Functional particle size: outer diameter 170 mm, height 160 mm

Functional particle volume: 3632 c c

Functional particle dry weight: 3130 g

Neutral weight of functional particles: 3650 g

Gear pump type: TG-47 C-PU-CB-KA manufactured by Kasa Denko Corporation

Gear pump filling and draining capacity: 4 c c / s

Gear pump rated output: 2.4 w or less

Guide pipe and functional particle material: Acrylic resin

Confirmation of the flow rate by the above device was carried out by visually suspending plastic visualization particles in an experimental water tank. As a result, it was confirmed that the particle movement speed was 8 to 10 cmZs and the water movement amount was 40 L per cycle (one reciprocation in 30 seconds) at an extrusion rate of 4.8 t per hour. Was. <Example 2>

A pressure sensor (model: FP-101-L11-L20A * B, manufactured by Yokogawa M & C Co., Ltd.) was installed on the functional particles of Example 1 so that the structure could detect the water depth. this When the functional particles were suspended in the experimental water tank of Example 1, it was confirmed that the gear pump was rotated forward / reverse in accordance with the water depth, and that the gear pump was sucked and discharged into the functional particles to float and sink.

Example 3>

In a cylindrical experimental water tank (inner diameter 90 Omm, height 120 Omm, water volume about 700 L), with the guide pipe provided with slits suspended, electric wires ( Power (DC 12 V) was supplied by a coated wire. The guide pipe used in Example 1 was provided with slits having a width of 5 Omm and a length of 90 Omm at three positions of the phase at the side circumferential portion 120. FIG. 5 shows a plan view and a front view schematically showing the guide pipe. The same functional particles as in Example 1 were used.

The plastic visualization particles were suspended in the experimental water tank, and the flow of water in the water tank when the functional particles were activated was observed.

The downward flow of the fluid generated in the guide pipe due to the sedimentation of the functional particles flows out of the slit from time to time out of the guide pipe, and a vertical vortex is generated along the side wall surface of the water tank. As a result, no flow stagnation was observed outside the guide pipe. The same phenomena were observed in the ascending flow of the fluid generated in the guide pipe due to the floating of the functional particles when the functional particles settled. Furthermore, it was confirmed that the flow of water outside the guide pipe after the functional particles were reciprocated 10 times was longer than that of the guide pipe having no slit. In addition, it was confirmed that the sedimentation speed and the floating speed of the functional particles were slightly higher than those of the guide pipe without slits.

Example 4>

In Example 1, the functional particles were activated by disposing a guide rail in the guide pipe. The guide rail used had a convex cross section, and the functional particles were provided with concave grooves. The concave grooves were provided at three locations on the outer periphery of the functional particles, and three guide rails were arranged along the concave grooves. Figure 6 shows It is a figure which showed typically the sectional view of this functional particle and a guide rail. It was confirmed that the above-mentioned functional particles operated stably without any horizontal blurring during vertical operation, and that the flow was efficiently generated. Example 5>

Stirring effect when using various guide pipes>

The experiment was performed in a polycarbonate water tank (dimensions: 橫 80 Omm, height 60 Omm, depth 80 Omm). Fill the water from the bottom of the water tank to about 450 cm, fix the temperature at 15 and then submerge the sheath heater to about 225 mm from the bottom of the water tank and heat it. 15) The upper part formed a temperature stratification of the high temperature part (about 30). The following three types of guide pipes were used.

(1) Normal guide type

Inside diameter 47.5 dragon, wall thickness 2.5 讓, total length 330 Acrylic resin cylindrical guide pipe

(2) Side slit guide pipe

Inside diameter 47.5, wall thickness 2.5im, total length 330 Acrylic resin cylindrical guide pipes with slits of 12.5 mm width and 8 Omm length at three circumferential positions at both circumferential parts 120 at both ends. Provided in the long axis direction.

(3) Center slit guide pipe

Inner diameter 47.5, wall thickness 2.5 sq., Length of 330 A total length of a cylindrical guide pipe made of acrylic resin 120 Provided in the long axis direction.

Fig. 7 is a front view schematically showing a side slit guide pipe and a center slit guide pipe.

As the functional particles, cylindrical particles made of acrylic resin having an outer diameter of 37.5 mm and a height of 40 mm were used. A hollow rope made of polyurethane was passed through the center of the functional particles, and the functional particles and the hollow rope were fixed. By operating the hollow rope up and down, the functional particles can be moved inside the guide pipe. It was made to reciprocate vertically.

The guide pipe was placed in a water tank with both ends open, and the functional particles were reciprocated in the guide pipe under the conditions shown in Table 1 below.

The water temperature change was measured to see the stirring effect. The water temperature was measured at a distance of 5 cm and 35 cm from the water surface. The results are shown in Figs.

From these figures, it was found that under the conditions of Experiment No. 1, the time required until the water in the water tank was stirred was about 70 minutes. The required time from Experiment No. 2 to Experiment No. 5 was about 65 minutes, about 95 minutes, about 22 minutes, and about 35 minutes, respectively. From these results, it was confirmed that the stirring effect was higher when the side slit guide pipe and the center slit guide pipe were used, and especially when the center slit guide pipe was used, compared to the normal guide pipe. .

The reason why the stirring effect is high when the side slit guide pipe or the center slit guide pipe is used may be as follows. First, the side slit guide pipe will be described with reference to FIGS. (a) After the functional particles rise and stop near the water surface, these functional particles are drawn into the guide pipe, and water collides with the functional particles and flows out of the side slit. (B) After a certain amount of water has flowed out, the water pushed out by the functional particles is ejected horizontally from the side slits immediately after the start of the descending of the functional particles. (C) This convection has the effect of spreading the stirring over a wide area. The convection begins to settle while diffusing in the radial direction due to its high density at low temperatures. The side slit guide pipe induces such convection and improves the stirring effect.

Next, the center slit guide pipe will be described.

(d) After the functional particles rise and stop near the water surface, the functional particles are drawn into the guide pipe, causing water to collide with the functional particles and flow out of the center slit. (E) When the functional particles descend, the water that has been drawn in by the functional particles and the water that is currently being pushed collide and squirt horizontally from the center slit. (F) After the functional particles pass through the center slit, the convection jetted horizontally collides with the convection jetted from the lower part of the guide pipe near the wall of the water tank. Therefore, the stirring is performed in a wide range and at an early stage.

Example 6>

In the apparatus of the fifth embodiment, a trumpet-shaped acrylic resin guide pipe is provided outside the upper end of the normal guide pipe, and when the functional particles are operated to measure a change in water temperature, the guide pipe is provided. It was confirmed that the stirring effect was improved.

In the apparatus of Example 5, the end of the functional particle was C-face processed, and an acrylic resin fluid stirring blade having the shape shown in FIG. 3 was disposed at the end of the functional particle. When the functional particles were operated and the change in water temperature was measured, it was confirmed that the stirring effect was improved. Industrial applicability

According to the invention [1] of this application, it is effective in improving the water quality of a port or the like, and can continuously operate stably without being affected by the surrounding environment. Circulates fluid without the need for power consumption

I

Can be done. No

Further, according to the invention [2] of this application, in addition to the effects of the invention [1], by providing a slit in the guide pipe, the fluid can be circulated effectively. /

According to the invention [3] of this application, the fluid can be circulated more effectively. /

According to the invention [4] of this application, since the plurality of functional particles are connected, the size of the functional particles can be increased, and the fluid circulation system can be increased in size.

According to the invention [5] of the present application, the functional particles can be operated stably, and the flow can be efficiently caused.

According to the invention [6] of this application, the flow inside and outside the guide pipe is guided by the guide pipe, and the fluid can be efficiently circulated.

According to the invention [7] of the present application, the amount of vortex generated due to the operation of the functional particles is increased at the rear part in the operating direction of the functional particles provided with the fluid agitating blades, thereby increasing the stirring capacity. Can be increased.

Further, according to the invention of [8] of this application, the weight of the functional particles is adjusted, and the functional particles can have a flotation function.

Further, according to the invention [9] of the present application, it is possible to obtain functional particles that can continuously and stably operate without being affected by the surrounding environment.

According to the invention [10] of this application, in addition to the effects of the invention [9], the operation of the pump unit is stabilized by the pump unit being fixedly arranged on the pedestal provided inside the cell, and the fluid Inhalation and discharge Swell.

According to the invention of [11] of this application, the functional particles can be operated without being affected by the surrounding environment, and can be operated with higher accuracy.

As described above, according to the fluid circulation system of the invention of the present application, it is effective in improving the water quality of a port or the like, and can continuously operate stably without being affected by the surrounding environment. It is easy to use and does not require a large amount of power consumption. Furthermore, according to this fluid circulation system, since it is arranged in the fluid, even if it is installed in a pond such as a park, for example, it does not impair the aesthetics. ,

Claims

The scope of the claims

1. A fluid circulation system in which at least one end of a cylindrical guide pipe is disposed vertically so as to be opened in a fluid, and one or more functional particles operate in the guide pipe, A fluid circulation system that operates by repeatedly settling or floating in the axial direction of the guide pipe, and circulates the fluid by the flow caused by the operation of the functional particles.

2. The fluid circulation system according to claim 1, wherein a slit is provided in a side surface of the guide pipe.

3. The fluid circulation system according to claim 2, wherein the slits are provided at both ends or a central portion of the guide pipe in a longitudinal direction.

4. The fluid circulation system according to claim 1, wherein a plurality of functional particles are connected.

5. The fluid circulation system according to any one of claims 1 to 4, wherein the functional particles are held by guide rails and repeatedly settle or float and operate.

6. A guide pipe having an open end is disposed outside the end of the guide pipe, and guides a flow inside and outside the guide pipe caused by the operation of the functional particles to the guide pipe to circulate the fluid. The fluid circulation system according to any one of claims 1 to 5, wherein:

7. A cylindrical fluid agitating blade having a lower end opening larger than an upper end portion is provided at an end of the functional particle subjected to the C-plane processing according to any one of claims 1 to 6. A fluid circulation system according to any one of the above.

8. The functional particles absorb the fluid into the functional particles or discharge the fluid out of the functional particles, adjust the weight of the functional particles, and make the functional particles buoyant and gravitational in the fluid. 8. The fluid circulation system according to claim 1, wherein the fluid circulation system sinks or floats in balance with the fluid.

9. The functional particles are formed of a pump unit capable of controlling suction and discharge of a fluid, and a cell having a tank unit for storing the fluid, and the pump unit is disposed in the cell to transfer the fluid outside the cell to the tank unit. 9. The fluid circulation system according to claim 8, wherein the weight of the functional particles is adjusted by suctioning or discharging the fluid in the tank out of the cell.

10. The fluid circulation system according to claim 9, wherein the pump unit is fixedly arranged on a pedestal provided inside the cell.

11. The fluid circulation system according to claim 9, wherein a pressure sensor is provided for the functional particles, and the pressure sensor detects the water depth to control the suction and discharge of the fluid to and from the tank.