JP3028973B2 - Water tank with jet device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

A. The present invention relates to a water tank in which water is imparted to water in a tank.
In particular, it relates to a water tank in which a jet is formed by screw blades.

(2) Conventional technology Conventionally, a flow is imparted to water in a tank in a facility such as a reflux water pool, a treatment tank in a water supply and sewerage facility, or a fish tank in a fish farm. By the way. That is, in the reflux type water pool,
A circulating flow is created in the water in the pool, and swimming is performed on or against the circulating water flow. In the treated water tank, the water to be treated itself is sent into the treated water tank, and the water flow in the treated water tank promotes purification and promotes precipitation. Further, in the fish tank, purified water is spouted into the fish tank to form a circulating flow in the fish tank, thereby spreading oxygen and nutrients to every corner.

[0003] As a means for delivering water in these facilities, screw devices are generally used.
That is, water is ejected into the tank by the water pushing action accompanying the rotation of the screw blade. However, since the water flow sent out by the screw blade flows along the curved surface of the blade, it exhibits a turbulent state, energy is diffused, and the water flow cannot be sent far. For this reason,
In general, measures to increase the momentum of the water flow have been taken by taking measures such as expanding the screw blades or increasing the driving force. However, these measures are costly and uneconomical.

(3) Problems to be Solved by the Invention The present invention has been made to solve the above-mentioned drawbacks of the conventional water tank, and in this type of water tank equipped with a jet device using screw blades, the driving force is increased. The purpose of the present invention is to obtain a larger sending force by a screw blade without accompanying the above.

[0005] b. Configuration of the Invention (1) Means for Solving the Problems The water tank with a jet device of the present invention achieves the above object,
The following configuration is adopted. The configuration characterized by the first invention is a water tank that is installed below a normal water level of a water tank body that stores water and that obtains a jet water flow by rotating motion of a screw blade that is rotationally driven by a driving motor. A thin plate-shaped straightening plate having a plane having a predetermined width perpendicular to the front surface of the screw blade, a center of the screw blade formed by a vertical straightening plate and a horizontal horizontal straightening plate at a position immediately adjacent to the front surface of the screw blade. the included symmetry axis, and made by rectifier to form a grid pattern of partitioned space within a range not exceeding the diameter of the screw blade is arranged, the screw blade
The water flow caused by the rotation of the root
The water flow energy is concentrated in the space
It is characterized by obtaining an extrusion thrust .

A second aspect of the invention is characterized in that a return path having a closed cross section is formed in a lower part of a water tank body for storing water, and one end of the return path reaches an upper part of the water tank body. A discharge port communicating with the water tank main body is formed as a rising part, and a suction port communicating with the water tank main body is formed at the other end of the return path. Screw blades that are rotated by a driving motor facing the outlet and eject water flow are arranged,
A rectifying device comprising two or more thin plate-shaped rectifying plates having a plane facing the front surface of the screw blade and orthogonal to the front surface of the screw blade is provided, and the rotation of the screw blade is performed.
Injection water flow caused by motion into the compartment
To concentrate the water flow energy,
Gaining power . In this configuration, providing an appropriate number of partition plates extending in the longitudinal direction in the return path is an optional matter appropriately adopted.

(2) Function In the first aspect of the invention, the water flow pushed out by the rotating screw blade is in a turbulent state as a so-called spiral flow accompanied by a rotating motion, but is arranged immediately near the front surface of the screw blade. In the rectifier, the turbulent water flow is introduced into the closed space, is rectified by the rectifier plate while flowing through the fixed width, and is changed into flowing water flowing in parallel along the axis of the screw blade. As a result, the water flow energy is concentrated, the water flow is made vigorous, and a large pushing thrust is obtained.

[0008] In the second aspect of the invention, the water in the return path is sucked out by the screw action of the screw blades disposed to face the inside of the discharge port, and is sent out from the discharge port as a jet flow. The water injected from the discharge port flows in the water tank and is introduced into a suction port formed on the other end side of the water tank. The water introduced into the suction port moves in the return path and is guided again to the discharge port. By repeating this, the forced reflux of water is performed. The rectifying device disposed outside the discharge port acts on the swirling water flow ejected from the discharge port, and further concentrates energy by the rectifying action to create a water flow having strong thrust.

(3) Embodiment An embodiment of a water tank with a jet device according to the present invention will be described with reference to the drawings. First Embodiment FIGS. 1 to 4 show an embodiment (first embodiment) of a water tank with a jet device according to the present invention. That is, FIGS. 1 and 2 show the entire configuration, and FIGS. 3 and 4 show the configuration of the main part. In addition,
The arrow in the figure indicates the direction of the water flow. In this embodiment, an example of application to a treated water tank or a fish tank will be described.

Referring to FIGS. 1 and 2, reference numeral 1 denotes a water tank main body, which has a rectangular parallelepiped internal space and is formed of an appropriate structural material such as concrete or synthetic resin.

A partition 2 is formed inside the tank main body 1 at a corner of a short side, and the partition 2 has a large volume of the tank 3.
And a small storage chamber 4 having a small volume. In the partition 2,
In the present embodiment, an appropriate window 6 is provided, and the water tank 3 and the storage small chamber 4 are in communication. However, in some cases, the window 6 is not provided, and may be insulated. A raw water supply unit 7 is disposed at one end of the storage chamber 4 in the width direction.
Supply raw water to

At the other end of the storage chamber 4, a discharge port 8 is opened in the partition wall 2 at a position lower than the normal water level. The outlet 8
Usually, a circular shape is adopted, but other shapes (for example, a square, a rectangle, an octagon, etc.) can be freely adopted.

Then, a jet device 10 is installed facing the discharge port 8. More specifically, the jet device 10 includes a driving motor 11, a driving shaft 12, and a screw blade 13
The driving motor 11 is mounted and fixed on a receiving shelf 15 fixed to the outside of the water tank main body 1.
One drive shaft 12 penetrates the side wall of the water tank main body 1 via a watertight bearing 16, and a screw blade 13 is fixed to a tip end thereof. The screw blade 13 is preferably housed in the outlet 8, but may be located in the immediate vicinity thereof.

Referring to FIGS. 3 and 4, in this embodiment, three screw blades 13 are used as screw blades 13 in general, but the other four blades do not prevent the use. The individual screw blades 13a are formed by twisting with a predetermined curvature, and a difference in streamline distance flowing along curved surfaces on the front and back surfaces of the blades due to the rotation thereof indicates that the rear surface P
And act to push water toward the front surface Q. In the figure, O is the axial center of the screw blade 2, and D is its diameter.

A rectifying device 20 is provided in front of the outlet 8. Specifically, the rectifying device 20 includes a vertical rectifying plate 21.
And the horizontal rectifying plate 22 are assembled in a grid pattern. Reference numeral 23 denotes a frame, which holds the current plates 21 and 22;
It is fixed to the partition wall 2 around the discharge port 8 with the mounting bolt 24. Each of the rectifying plates 21 and 22 has a rectangular flat plate shape with a constant width, and is formed as thin as possible within a range that does not cause resistance to water flow.

The vertical and horizontal rectifying plates 21 and 22 have their plate surfaces arranged along a plane perpendicular to the screw surfaces P and Q, and have a symmetric shape with respect to the axis O of the screw blade 13. The vertical and horizontal rectifying plates 21 and 22 form a section space K that is closed inside. This section space K is included in the range of the diameter D of the screw blade 13 as illustrated. That is, when the diameter is larger than the diameter D, the effect described later cannot be sufficiently exerted, and when it is too small, the resistance of the water flow is obtained. In the present embodiment, one section space K
Is formed.

The water tank equipped with a jet device of the present embodiment having the above-described structure operates as follows. By operating the drive motor 11 of the injection device 10, the screw blade 13 rotates, and water in the storage small chamber 4 is sucked from the rear surface P of the screw blade 13 and pushed out from the front surface Q toward the water tank portion 3. Since the water flows along the curved surface on the screw blade 13, the water flow becomes a turbulent flow with a spiral flow .

In the rectifying device 20 disposed immediately near the front surface Q of the screw blade 13, the turbulent water flow is rectified by the rectifying plates 21, 21.
2 and flows along the width of the rectifying plates 21 and 22
To rectify the flow to. That is, the streamline is parallelized along the axis O of the screw blade 13. In particular, in the closed space K, water flow energy is concentrated, and rectification is promoted. As a result, the water flow energy generated by the rotation of the screw blade 13 is concentrated around the axis O.

As a result, the water flow obtains a large sending thrust,
The water stream can be sent far away. As a result, the jet device requires only a small driving force, and the equipment can be downsized.

(Second Embodiment) FIGS. 5 and 6 show another embodiment (second embodiment) of the present invention. This embodiment shows an application to a reflux type water pool.

A reflux water flow pool (hereinafter simply referred to as a “water flow pool”) according to the present embodiment includes a water tank main body 30, a reflux path 32 formed at a lower portion of the water tank main body 30 through a partition 31,
A discharge port 33 and a suction port 34 formed in communication between the end of the return path 32 and the water tank main body 30, and the discharge port 3
3 and a main part of a rectifying device 37 installed facing the front of the discharge port 33.

Hereinafter, the configuration of each unit will be described in detail. Water tank body 3
0 is filled with water as an ordinary water surface up to its upper edge, and a sufficient volume is secured to allow a person to lie down and take a swimming posture. And in it the circulation of water
By creating a current , a swimming state can be taken and swimming training can be performed, or a body is stimulated to maintain and improve health.

The return path 32 has a closed cross section, and
Further, a discharge port 33 is opened, which is smaller in width than the water tank main body 30 and rises at one end with the rising portion 32a and communicates with the inside of the water tank main body 30 near the lower part of the normal water level.

A jet device 36 is installed in the recirculation passage 32 so as to face the back of the outlet 33. The jet device 36 includes a driving motor 40, a driving shaft 41 and a screw blade 42.
The driving shaft 41 of the driving motor 40 penetrates the side wall of the water tank main body 30 through a watertight bearing 44, and the screw blade 4
2 is fixed. The drive shaft 41 is inclined upward at an angle of 10 ° to 30 ° with respect to the horizontal plane of the water flow pool. As a result, the screw blade 42 is sent out at an angle higher than the water level via the outlet 33. In this embodiment, the discharge port 33 and the jet device 3 are used for one person.
Although the number 6 is single, it is free to arrange a plurality of numbers. Further, the drive shaft 41 can be made parallel without tilting.

A rectifier 37 is installed in front of the outlet 33. The rectifying device 37 includes a vertical rectifying plate 46 and a horizontal rectifying plate 47.
Are assembled in a frame in the frame 48, and the frame 4
8 is fixed around the delivery port 33. This configuration conforms to the first embodiment.

The other end of the return path 32 is slightly raised
The suction port 34 that opens to the middle water level of the water tank main body 30 is formed. A grating (not shown) is appropriately installed in the suction port 34. A partition plate 50 is provided in the center longitudinal direction of the return passage 32 to partition the water flow in the return passage 32 and contribute to an increase in flow velocity.

In the water flow pool of the present embodiment having such a configuration, the screw blades 42 are rotated by the driving of the drive motor 40 of the jet device 36, and the water in the return path 32 is sucked out by the rotation action. Outlet 3
It is sent out to 3. Since the screw blades 42 face obliquely upward, the jet flows toward above the water surface.
The water injected from the discharge port 33 flows in the water tank main body 30, and a suction port 34 formed on the other end side of the water tank main body 30.
Flows to The water introduced into the suction port 34 is
2 and is guided to the outlet 33 again. By repeating this, the forced reflux of water is performed.

In the process of forcible reflux of the water, the flowing water increases its flow velocity in the reflux passage 32 and does not decrease its flow velocity until reaching the rising portion 32a. Therefore, the screw blades 42 provided in this part can be efficiently operated. The jet flow can be sent out to the outlet 33. Further, the outlet 3
A rectifying device 37 disposed outside of the nozzle 3 acts on the water flow injected from the discharge port 33, and further concentrates energy by the rectifying operation to create a strong water flow.

C. According to the water tank with a jet device of the present invention, the water flow pushed out by the rotating screw blades is in a turbulent state,
This turbulent water flow is rectified by a rectifying plate disposed immediately in front of the screw blade, and is changed into flowing water flowing in parallel along the axis of the screw blade. As a result, the energy of the water stream is concentrated, the water stream is made vigorous, and a large pushing force is obtained. Therefore, a strong water flow can be obtained with a small power, and the size of the jet device can be reduced, which is economical.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of one embodiment (first embodiment) of a water tank with a jet device of the present invention.

FIG. 2 is a view taken in the direction of arrow II in FIG.

FIG. 3 is an enlarged view of a part III in FIG. 1;

FIG. 4 is a view in the direction of arrow IV in FIG. 3;

FIG. 5 is a longitudinal sectional view of another embodiment (second embodiment) of the present invention.

FIG. 6 is a sectional view taken along line IV-IV of FIG. 5;

[Explanation of symbols]

1, 30: tank body, 13, 42: screw blade, 2
0, 37: rectifying device, 21, 46: vertical rectifying plate, 22, 4
7 ... horizontal rectifying plate, 32 ... reflux path, 32a ... rising part, 3
3 ... Sending port, 34 ... Suction port

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A63B 69/12 A01K 63/00 E04H 3/16-3/20

Claims (3)

(57) [Claims] 1. A water tank body for storing water, which is located below a normal water level.
A screw that is installed and driven to rotate by a drive motor
In a water tank where jet water flow is obtained by rotating the blades
The screw blade at a position immediately in front of the screw blade.
Rectification of a thin plate with a plane of predetermined width orthogonal to the front of the blade
The vertical rectifying plate in the vertical direction and the horizontal rectifying plate in the horizontal direction
Include the center of the screw blade in the axis of symmetry, and
A girder-shaped section within the diameter of the screw blade
A rectifying device that forms a space is provided, and the jet caused by the rotational movement of the screw blade is provided.
Directs the water stream into the compartment and
A water tank with a jet device , which is centralized and obtains a large pushing thrust . 2. A return path having a closed cross section is formed in a lower part of a water tank body for storing water, and one end of the return path is a rising part reaching an upper part of the water tank body. A discharge port is formed at the other end of the return path, and a suction port is formed at the other end of the return path. At a rising portion of the return path, the drive port is rotated by a drive motor facing the discharge port. A screw blade that is driven and injects a water flow by its rotation is disposed, and the screw blade is
Close to the front of the screw blade immediately before the front of the blade.
The straightening plate is a thin plate with a plane
Screw with the vertical rectifying plate in the horizontal direction and the horizontal rectifying plate in the horizontal direction.
The center of the blade is included in the axis of symmetry, and the screw blade is
Form a girder-shaped compartment within a diameter not exceeding
A rectifying device is provided, and the jet caused by the rotational movement of the screw blade is provided.
Directs the water stream into the compartment and
A water tank with a jet device , which is centralized and obtains a large pushing thrust . 3. A water tank with a jet device according to claim 2, wherein an appropriate number of longitudinally extending partition plates are provided in the return path.