JPH0350683Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an oxygen supply device for increasing the dissolved oxygen concentration in water, and in particular, the present invention relates to an oxygen supply device for increasing the dissolved oxygen concentration in water. This invention relates to an oxygen supply device for increasing oxygen levels.

(Prior Art) Conventionally, as a device for increasing the dissolved oxygen concentration of water in an aquarium, there is a device in which oxygen sent from air or an oxygen cylinder is ejected from the bottom of the aquarium in the form of fine bubbles.

In addition, by using the negative pressure that occurs when water flows,
A device that mixes water and oxygen or air in an aquarium to increase the dissolved oxygen concentration and circulate it was developed in 1980.
-There is No. 46118. This device has a structure in which water in a water tank is circulated through a pipe using a pump, etc., and air or oxygen is mixed into the water flow through a supply port provided on the side of the pipe by the action of negative pressure generated within the pipe. It is.

(Problem to be solved by the invention) As mentioned above, with the device that ejects fine bubbles from the bottom of the aquarium, the mixing and agitation of the water and the oxygen or air sent in is insufficient, resulting in a high rate of dissolving in the water and becoming dissolved oxygen. The reality is that more than 80% of oxygen or air flows out of the tank and is wasted.

In addition, even in devices that mix oxygen or air into a water stream due to the negative pressure generated in the pipes as described above, the water stream alone does not sufficiently mix and stir the oxygen or air, resulting in an increase in dissolved oxygen concentration. The ratio is low, and the amount of oxygen or air flowing out is also increasing.

Furthermore, as mentioned above, in conventional devices, the proportion of the injected air or oxygen that dissolves in water is low, and the amount of air or oxygen that flows out is large, so when using expensive oxygen, it is not economically viable. There was a problem.

Therefore, an object of the present invention is to provide an oxygen supply device that can sufficiently mix and stir the oxygen or air and water and increase the rate of increase in the dissolved oxygen concentration in the water. .

Another object of the present invention is to provide an oxygen supply device with improved oxygen supply efficiency.

(Means for Solving the Problems) The present invention was devised in view of the above-mentioned problems and objectives, and its gist is that it is an oxygen supply device connected to a circulation pipe that circulates water. A spiral nozzle that generates a whirlpool disposed on the upstream side of the pipe is connected to the pipe on the downstream side of the spiral nozzle, and oxygen or air is introduced from the outside by the negative pressure generated by the water flow. A supply pipe line for supplying the vortex flow is provided.

Further, the present invention includes, on the downstream side of the supply pipe of the pipeline, a bubble chamber, an oxygen recovery port provided at the top of the bubble chamber, a valve provided in the oxygen recovery port, and a float interlocked with the valve. By connecting an oxygen recovery device and opening and closing a valve by vertical movement of a float, oxygen not dissolved in the water flow is recovered through the oxygen recovery port and introduced into the supply pipe. shall be.

(Function) In the supply device of the present invention, the water flow sent into the pipe first becomes a vortex by passing through the spiral nozzle disposed on the upstream side, and is turned into a vortex by the negative pressure generated by the water flow. Oxygen or air is supplied from the outside into the vortex through a supply pipe connected to the downstream pipe, and is vigorously mixed and stirred in the vortex to increase the dissolved oxygen concentration in the water flow.

In addition, in the supply device of the present invention, the water flow with the dissolved oxygen concentration increased as described above is guided into the bubble chamber of the oxygen recovery device connected to the downstream side of the supply pipe line, and is dissolved in the water flow. When the remaining oxygen is released from the water stream and a certain amount of oxygen accumulates in the upper part of the bubble chamber, the float descends depending on the water level and opens the valve provided at the oxygen recovery port to recover oxygen and supply it to the supply pipe. . Furthermore, in this way,
If there is little oxygen released at the top of the bubble chamber,
The float rises with the water level and closes the valve disposed at the oxygen recovery port, preventing water from accidentally gushing into the recovery port.

(Example) The oxygen supply device of the present invention will be described in more detail below based on the accompanying drawings.

FIG. 1 is a sectional view of the oxygen supply device of the present invention, and FIG. 2 is a sectional view taken along line A--A in FIG. 1.

In FIG. 1, 1 is the oxygen supply device of the present invention, 2 is a pipe line, and pipe line 2 is a pump (not shown).
It has an inlet 4 connected to a circulation pipe 3 connected to a water tank or the like, and an outlet 5 connected to a water tank or an oxygen recovery device to be described later.

A spiral nozzle 6 is disposed on the upstream side of the conduit 2, and the spiral nozzle 6 has a plurality of nozzle holes 6' spirally bored as shown in FIG. The water flow introduced from the ground becomes a vortex.

On the downstream side of the spiral nozzle 6, a supply pipe line 7 is provided which communicates with the pipe line 2 and supplies (inhales) oxygen or air from the outside to the vortex stream using negative pressure generated by the water flow. . This supply pipe 7
is further connected to a flow rate regulating valve, an oxygen cylinder (not shown), etc. when oxygen is used.

With this configuration, the water flow introduced from the inlet 4 becomes a vortex flow by passing through the spiral nozzle 6, and oxygen or air is supplied from the outside through the supply pipe 7 on the downstream side by the action of negative pressure. is supplied to the vortex and vigorously mixed and stirred to increase the dissolved oxygen concentration in the water stream.

Further, FIG. 3 is a partial sectional view of another embodiment of the oxygen supply apparatus of the present invention, but the same components as in the first embodiment are omitted in the figure. This embodiment differs from the above embodiments in that an oxygen recovery device 8 is connected to the downstream side of the outlet 5.

This oxygen recovery device 8 is composed of a bubble chamber 9, an oxygen recovery port 10 provided at the top of the bubble chamber, a needle valve 11 provided in the oxygen recovery port 10, and a float 12 interlocked with the needle valve 11. float 12
By opening and closing the needle valve 11 by vertical movement of the needle valve 11. Oxygen not dissolved in the water stream is recovered from an oxygen recovery port 10 and returned to the supply pipe 7. With this configuration, the oxygen supply efficiency is improved.

More specifically, the water flow that has flowed into the bubble chamber 9 from the outlet 5 comes into contact with the baffle plate 13 protruding from below inside the bubble chamber, and the flow velocity is reduced, so that the water flow rises due to the buoyancy of the bubbles. However, the oxygen that is not dissolved in the water flow is released and accumulates in the upper part of the bubble chamber 9, and when it accumulates to a certain extent, the water level decreases due to this pressure, and the float 12 descends to close the needle valve 1.
1 is opened, and oxygen is sent through the passage 14 from the oxygen recovery port 10 to the supply pipe 7 by the action of negative pressure. Furthermore, when the amount of oxygen accumulated in the upper part of the bubble chamber 9 decreases, the water level rises and the float 12 rises, and the needle valve 11 is closed.
Water is prevented from spouting out from the oxygen recovery port 10 (see FIG. 4).

Note that the recovered oxygen is transferred to the supply pipe 7 as described above.
It is of course also possible to provide a separate recovered oxygen supply line, similar to supply line 7, to feed the water stream instead of introducing it into the water stream. Furthermore, although a needle valve is used in the embodiment, other valves may also be used.

(Effects) According to the oxygen supply device of the present invention, a vortex is generated in the pipe through the spiral nozzle, and by the action of negative pressure through the supply pipe that communicates with the pipe on the downstream side of the swirl, Air or oxygen is supplied to the vortex from the outside, and the supplied air or oxygen is vigorously mixed and stirred with the water flow, making it easy to increase the dissolved oxygen concentration in the water flow.

In addition, according to the oxygen supply device of the present invention, the oxygen that has not dissolved in the water flow is recovered by the oxygen recovery device and then supplied to the vortex again, which greatly improves the efficiency of supplying expensive oxygen. This is an excellent idea that has many effects, such as being able to provide a feeding device.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the oxygen supply device of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a sectional view of another embodiment of the oxygen supply device of the present invention. FIG. 4 is a partially enlarged sectional view of FIG. 3. DESCRIPTION OF SYMBOLS 1...Oxygen supply device, 2...Pipe line, 3...Circulation pipe line, 4...Inlet, 5...Outlet, 6...Spiral nozzle, 6'...Nozzle hole, 7...Supply pipe Pathway, 8...Oxygen recovery device, 9...Bubble chamber, 10...
Oxygen recovery port, 11... needle valve, 12... float, 13... baffle plate, 14... passage.

Claims (1)

[Claims for Utility Model Registration] (1) An oxygen supply device connected to a circulation pipe that circulates water, which includes a spiral nozzle that generates a vortex disposed on the upstream side of the pipe, and the spiral nozzle. An oxygen supply device comprising: a supply pipe communicating with a pipe on the downstream side of the vortex for supplying oxygen or air from the outside to the vortex using negative pressure generated by the water flow. (2) On the downstream side of the supply pipe of the pipeline, there is an oxygen recovery device comprising a bubble chamber, an oxygen recovery port provided at the top of the bubble chamber, a valve provided at the oxygen recovery port, and a float linked to the valve. A claim characterized in that oxygen not dissolved in the water flow is recovered through the oxygen recovery port and introduced into the supply pipe by opening and closing the valve by vertical movement of the float. Item 1. The oxygen supply device according to item 1.