JPH0515935Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stirring device for stirring a liquid filled in a water tank such as a constant temperature water tank.

[Prior art] For example, water filled in a water tank such as a constant temperature water tank is
The temperature must always be kept constant, and the water temperature distribution within the tank must always be uniform.
Therefore, a stirring device is installed in the water tank in order to stir the water in the constant temperature water tank and maintain the constant temperature state as described above.

As a stirring device of this kind, there is conventionally known a stirring device which is composed of, for example, a motor 1 as shown in FIG. 2, and a propeller 3 attached to a shaft 2 of the motor 1. This stirring device is constructed by placing a propeller 3 facing downward into water at one end of the upper opening of a water tank 4, and driving a motor 1 to control the propeller 3.
is rotated, and the water W in the water tank 4 is stirred by convection as shown by the arrow in FIG. In this case, a plurality of rectifier plates 5 are provided in the tank 4 so that the water flow in the tank 4 is uniform.

However, in the stirring device described above, the device is
Since it is disposed so as to cover a part of the opening, there is a problem in that it requires installation space and the usable area of the opening is limited. Furthermore, since the rectifying plate 5 is disposed within the water tank 4, there is a drawback that the effective internal volume becomes small.

Therefore, in order to eliminate such drawbacks, a propeller 3 is provided at the bottom of the water tank 4 as shown in FIGS. A stirring device was used that rotates the propeller 3 to stir the water W in the water tank 4.

As a result, in this stirring device, the effective internal volume of the water tank 4, which was the aforementioned drawback, can be improved.

[Problems to be solved by the invention] However, the bearing 6 of the rotating shaft 2 of the propeller 3 is fitted into a hole provided in the bottom wall 4a of the water tank 4, and measures are taken to prevent water leakage in this bearing 6. Even if the shaft and the bearing are combined, friction cannot be avoided and the bearing 6 wears out. As a result, water leaks from around the bearing 6, resulting in a loss of reliability as a device.

Furthermore, in this stirring device, if the rotating shaft 2 is directly connected to the motor 1 as shown in FIG. There was a drawback that a dead space 7 was created at the bottom of the water tank 4.

Furthermore, in a stirring device as shown in FIG. 4, in which a pulley 8 is fitted onto a rotating shaft 2 and a propeller 3 is rotated by driving a belt 9, the tension of the belt 9 applied to the bearing 6 is equalized. The tension roll 10 must be provided separately from the motor 1, which not only complicates the structure but also requires installation space.

In addition, in any of the above-mentioned stirring devices,
There was a problem that the arrangement position of the propeller 3 with respect to the water tank 4 was fixed, and the convection of the water W by the propeller 3 was always constant and there was no degree of freedom.

Therefore, the present invention was devised to solve the above problems, and the purpose is to provide a stirring device that has a simple structure, does not leak water, and can be installed at any position in the aquarium. There is.

[Means for Solving the Problems] Next, means for achieving the above object will be described with reference to FIG. 1, which corresponds to an embodiment.

The stirring device of this invention is a stirring device that stirs a liquid filled in a water tank, and includes a pump that sucks the liquid in the tank and discharges it into the tank, and a rotational movement by the liquid flow of the pump. The present invention is characterized by comprising: an impeller that is provided in the water tank, and a propeller that is provided in the water tank and that stirs the liquid in the water tank in conjunction with the impeller.

[Operation] The pump sucks the liquid in the aquarium and discharges it into the aquarium, creating a liquid flow. When the impeller rotates due to this liquid flow, the propeller rotates in conjunction with this. The rotation of this propeller stirs the liquid in the water tank.

[Embodiment] FIG. 1 is a side sectional view showing an embodiment of a stirring device according to the present invention.

The stirring device according to this embodiment is a device that stirs water W as a liquid in a water tank 4 to maintain a constant temperature state, such as a constant temperature water tank, for example.

First, the pump 11 is a pump that generates a flow in liquid, such as a water pump, and is provided with a pair of suction port 12 and discharge port 13. The suction port 12 is connected to one end of a suction pipe 14, and the discharge port 13 is connected to one end of a discharge pipe 15. Each of these pipes 14 and 15 is made of a flexible vinyl tube or the like.

The other end of the suction pipe 14 is connected to a suction hole 16 provided on the side wall of the water tank 4, and the water W in the water tank 4 is
It is designed to attract

Further, the discharge pipe 15 is inserted through a discharge hole 17 provided in the side wall of the water tank 4 . The other end of the discharge pipe 15 is connected to an inlet 18a provided on the side surface of the case 18.

The case 18 is formed into a hollow, substantially box-like shape, and is installed at the bottom of the water tank 4 . This case 18 is provided with an outflow port 18b on a side surface facing the above-mentioned inflow port 18a. Also, this case 1
A bearing 19 is fitted and provided on the upper surface of 8 approximately at the center.

The bearing 19 rotatably supports the rotating shaft 20 inserted therethrough. One end of this rotating shaft 20 extends into the case 18, and an impeller 21 is attached thereto. Moreover, at the other end of this rotating shaft 20,
A propeller 22 is attached, and as the impeller 21 rotates, the propeller 22 rotates simultaneously.

Therefore, in the stirring device configured as above,
First, when the pump 11 starts operating, it sucks the water W in the water tank 4 through the suction pipe 14 and discharges it. This discharged water W flows into the case 4 through the discharge pipe 15 and causes a water flow.

The water flow causes the impeller 21 to rotate, and then
It flows out from the outlet 18b and returns to the water tank 4. At this time, the water flow caused by the suction and discharge of the pump 11 is not strong enough to stir the inside of the water tank 4, and will not change the constant temperature state inside the water tank 4.

The impeller 21 rotated by the water flow is rotated by the rotating shaft 2
The propeller 22 is interlocked and rotated via 0.
The rotation of the propeller 22 stirs the water W in the water tank 4.

By the way, in the embodiment described above, the case 18 and the water tank 4 are not integrally molded, so that they can be installed at any position within the water tank 4. Further, in this embodiment, the impeller 21 is rotated by the water flow on the discharge side of the pump 11, but the water flow on the suction side may also be used. In this case, pump 1
1 and the pipe connected to case 18 become a suction pipe.

In addition, in this embodiment, the pump 11 and the case 1
The pipe connected to 8 is only for discharge, but
The suction pipe 14 may be connected to the outlet 18b of the case 18, and the water W may be circulated only within the case 18 and the pump 11. In this case, there is a water tank 4 inside the case 18.
By filling the inside with the same water W, problems such as water leakage due to wear of the bearing 19 will be eliminated.

Furthermore, in this embodiment, a suction hole 16 and a discharge hole 17 are provided in the side wall of the water tank 4.
6 and 17, the pipes 14 and 15 are connected and inserted through them, but without making holes in the water tank 4, both the suction and discharge pipes 14 and 15 are extended, and the water tank Through the edge of 4, aquarium 4
The case 18 installed inside the pump 11 may be connected to the case 18.

[Effects of the invention] As explained above, the stirring device according to the invention has the following advantages:
It consists of a pump, an impeller that is rotated by the water flow of the pump, and a propeller, and there is no need for a motor to rotate the propeller like in the past, resulting in a simple structure. In addition, the bearing that interlocks the impeller and propeller is
Since it is installed underwater in the aquarium, it is not susceptible to water leakage due to wear.

Furthermore, since the case containing the impeller and the pump are connected by a flexible pipe, the positional relationship between the rotary shaft and motor of a conventional propeller is not determined uniquely, and the aquarium The propeller that stirs the inside can be installed at a desired position within the tank.

[Brief explanation of the drawing]

FIG. 1 is a sectional side view showing an embodiment of a stirring device according to the present invention, and FIGS. 2 to 4 are side sectional views of a stirring device according to the prior art. 4... Water tank, 11... Pump, 21... Impeller, 22... Propeller, W... Liquid (water).

Claims (1)

[Claims for Utility Model Registration] A stirring device that stirs a liquid filled in a water tank, comprising: a pump that sucks the liquid in the tank and discharges it into the tank; and a rotational movement caused by the liquid flow of the pump. A stirring device comprising: an impeller that stirs liquid in the water tank; and a propeller that is provided in the water tank and that stirs liquid in the water tank in conjunction with the impeller.