JPH05336861A - Device for purifying water - Google Patents

Abstract

PURPOSE:To maintain the purification performance of the device and simultaneously prevent the death of fishes due to oxygen deficiency by effectively multiplying microorganisms in a microorganism culture tank for maintaining the purification performance of the device, and operating an auxiliary air-supplying means for the lowering in the performance of an air-supplying means inserted into a circulation flow route in response to a signal from an air flow detecting means to supply air (oxygen). CONSTITUTION:The device comprises a water press-supplying means 3 and a microorganism culture tank 5 successively installed in a forced circulation flow route for circulating water in a tank, an air supply means 4 for sucking and supplying air with the fluid energy of the circulation flow for supplying air in the microorganism culture tank 5, an optically air flow-detecting means 10 arranged in the air inflow route of the air-supplying means 4, and an auxiliary air-supplying means 11 for forcibly supplying air into the air supplying means 4 when receiving the output of an air shortage signal from the air flow-detecting means 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifying device for purifying water in a water purifying aquarium or water in a fish breeding aquarium.

[0002]

2. Description of the Related Art Generally, water tanks, artificial ponds, pools, and the like are contaminated by organic substances generated by external contaminants, and their purification has been a major problem.

Further, in the aquarium for aquarium fish, the water in the aquarium has problems such as generation of ammonia and stains due to decomposition of fish excrement and food left over from food, and contamination by propagation of pathogenic bacteria. Furthermore, pollution by nitrous acid and nitric acid generated in the process of decomposing nitrogen compounds such as ammonia was also a big problem.

As shown in FIG. 4, a conventional water purification apparatus of this type includes a purification module 27 made of a mineral substance in a forced circulation passage for circulating water in a water tank 25 by a water pressure feeding means 26.
On the upstream side of the purification module 27, air supply means 28 using an ejector effect for effectively propagating aerobic bacteria to enhance purification performance and for supplying oxygen necessary for fish growth is provided. The inlet 29 is provided at a position higher than the water surface of the water tank. Therefore, in the above water purifier, the performance of the ejector effect is deteriorated due to dust and dirt, and water does not flow out to the outside even when the water flows backward toward the air intake 29 (for example, Japanese Patent Laid-Open No. 4-99429).

[0005]

However, in the above-mentioned conventional structure, when the ejector effect is reduced due to dust or dirt and the performance of the air supply means is deteriorated, the supply of oxygen is stopped and the purification performance is deteriorated. There was a problem that the fish would die due to the lack.

The present invention is intended to solve the above problems, and an object thereof is to detect deterioration of the performance of air supply means, supplement oxygen with auxiliary air supply means to maintain purification performance, and prevent death of fish due to oxygen deficiency. It was done.

[0007]

In order to solve the above-mentioned problems, the water purifying apparatus of the present invention is provided with a water pressure feeding means provided in a forced circulation passage for circulating water in a water tank, and is fed from this water pressure feeding means. A microorganism culturing tank for purifying the water in the aquarium, an air supplying means for attracting and supplying air by the fluid energy of a circulating flow for sending air to the microbial culturing tank, and an air inflow path of the air supplying means are provided. The air flow detection means and the auxiliary air supply means, and the control means for controlling the operation of the auxiliary air supply means by a signal from the air flow detection means, the air flow detection means being connected to the auxiliary air supply means. A container having an air inlet and an air outlet connected to the air supply means, a float lighter than the specific gravity of water provided movably in the container, and opposite side walls of the container. Arranged Emitters and consists optical sensor, circulating flow in the circulation flow path is decreased, when the container is filled with water, and cut off between the light emitter and the light sensor by said float,
The auxiliary air supply means is driven.

[0008]

According to the present invention, the harmful substance in the water tank is sent to the microorganism culture tank by the water pressure feeding means through the air supply means. The sent harmful substance is attracted by the fluid energy of the circulation flow by the air supply means and enters the microorganism culture tank together with the air atomized in the jet part. The harmful substances that enter the microorganism culture tank are oxidatively decomposed and removed by the action of aerobic bacteria.

When the circulating ability of water decreases due to dust or dirt and the water flows backward from the air supply means to the air inflow path, the auxiliary air supply means is operated by the signal emitted from the air flow detection means to replenish the insufficient air. To do.

[0010]

Embodiments of the present invention will now be described with reference to the drawings.

In FIGS. 1 to 3, 1 is a water tank, 2 is a water purifying device, a circulation pump 3 which is a water pressure feeding means, and an external air is introduced into running water by an ejector action for attracting air by the fluid energy of the circulating flow. An air supply means 4 to be introduced, a microorganism culture tank 5 in which a fixed bed of microorganisms made of a mineral is enclosed downstream of the air supply means, and a heater 6 and a heat sterilization unit 8 to which a UV lamp 7 is attached are disposed further downstream. It constitutes a purification circulation circuit.

An air flow detecting means 10 is provided in an air inflow passage 9 of the air supplying means 4, and an air pump 1 which is an auxiliary air supplying means.
1 is serially inserted. Reference numeral 12 is a solenoid valve that separates the water tank 1 and the water purification device 2. Reference numeral 13 is a water leakage sensor for detecting water leakage. The control means 14 is connected to the circulation pump 3, the heater 6, the ultraviolet lamp 7, the air pump 11, the electromagnetic valve 12, the water leak sensor 13, and the light detection means 21 and 22 arranged in the air flow detection means 10. ing.
A filter unit 15 removes large solid matters in the circulating water.

Aerobic microorganisms are cultured in the microorganism culture tank 5. Saddle lock type ceramics made from granulated blast furnace is used as a fixed bed of microorganisms. This granulated blast furnace is produced by rapidly cooling slag generated from iron mills at about 0.5 ton per 1.0 ton of molten iron, and is mainly used as a raw material for cement and a soil conditioner. Granulated blast furnace is a porous glassy material containing CaO, SiO ₂ , and Al ₂ O ₃ as main components, and also contains MgO, FeO and the like.

2 (a) and 2 (b) show an embodiment of the air flow detecting means 10 which is an air circuit part, and 16 is a water receiver having an air inlet 17 and an air outlet 18. An impermeable ball 19 having a specific gravity of water or less is movably enclosed inside. A groove that forms an air flow path is provided in the water receiver side opening 20 of the outflow port 18. A light-emitting body 21 and an optical sensor 22 are arranged on both side walls of the water receiver 16 so as to face each other.

FIG. 3 is a control system diagram of the air flow detecting means 10. The electronic circuit 23 outputs a drive signal to the circuit section of the control means 14 in response to signals from the light emitter 21 and the optical sensor 22 which form the air flow detection means 10. The bidirectional three-terminal thyristor 24 is actuated by the drive signal generated from the electronic circuit 23, and the auxiliary air supply means 11 is moved.

In the above structure, when the control means 14 is turned on, the solenoid valve 12 is actuated to open and the circulation pump 3 starts operating. The water in the aquarium 1 is the solenoid valve 1
2, circulation pump 3, air supply means 4, microorganism culture tank 5,
Return to the water tank 1 through the heat sterilization unit 8.

In this circulatory system, organic matter such as fish excrement and uneaten food in the aquarium 1, and aquarium water containing ammonia and nitrates generated from the organic matter adhere to the surface of the fixed mineral bed from the beginning. The artificially cultivated aerobic microorganisms and their activators and oxygen contained in the air drawn into the circulating water oxidize and decompose to nitrate. This oxidative decomposition reaction of ammonia into nitrate is represented by the following reaction formula.

NH ₄ ⁺ +1.5 O ₂ → NO ₂ ⁻ + H ₂ O + H ⁺ ... NO ₂ ⁻ +0.5 O ₂ → NO ₃ ... In this way, fish excrement and leftover food in the aquarium 1 It becomes harmless by being oxidized to organic substances such as bait and ammonia and nitrates generated from organic substances, and the aquarium water is purified.

When the operation is normal, the air supply means 4 sucks air by the ejector action. Air flows from the inflow port 17 of the air flow detecting means 10 to the outflow port 18, and the inside of the container is filled with air. At this time, the ball 19
2 is located at the bottom of the water receiver 16 as shown in FIG. 2A, the optical sensor 22 is in the light receiving state. This light receiving state becomes a signal that the air supply means 4 is operating normally and is sent to the electronic circuit 23.

Next, when the circulation flow rate decreases, the flow velocity of the jet flow decreases, the ejector action of the air supply means 4 decreases, and water flows backward from the air inlet 9 of the air supply means 4.
When the water flows into the water receiver 16, the ball 19 is moved to the position shown in FIG.
As shown in (b), it floats and shields between the light emitting body 21 and the optical sensor 22, and the optical sensor 22 is in a non-light receiving state. This non-light receiving state is sent to the electronic circuit 23 as a signal that the suction of air by the air supply means 4 has stopped. This signal operates the bidirectional three-terminal thyristor 24 to operate the air pump 11. The air sent from the air pump 11 passes through the air flow detecting means 10 and is sent under pressure into the air supply means 9 to replenish the deficient air.

As described above, even if the circulation flow rate is lowered due to dust or dirt and the ejector action is reduced, the air pump 11 can replenish the air to maintain the purifying performance and keep the fish alive.

[0022]

As described above, according to the water purifying apparatus of the present invention, the following effects can be obtained. (1) Since the method is a purification method using microorganisms, and the air supply to the microorganism culture tank and the fish is a non-movable structure that attracts air by the fluid energy of the circulating flow, the performance can be maintained for a long time. (2) When the circulation capacity of water is reduced and the amount of air supplied to the microbial culture tank and the fish is reduced, the auxiliary air supply means operates by the signal from the air flow detection means to supply the insufficient air, so The purification performance of is preserved and the fish can be used effectively.

[Brief description of drawings]

FIG. 1 is a sectional view showing the configuration of a water purification device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of an air supply unit, an air flow detection unit, and an auxiliary air supply unit that are the air circuit unit of FIG.

FIG. 3 is a control circuit diagram for controlling the air flow detection means.

FIG. 4 is a sectional view of a conventional water purification device.

[Explanation of symbols]

 1 Water Tank 3 Water Pressure Feeding Means 4 Air Supply Means 5 Microbial Culture Tank 10 Air Flow Detection Means 11 Auxiliary Air Supply Means

Front page continuation (72) Inventor Masato Hattori, 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A water pressure feeding means provided in a forced circulation flow path for circulating water in a water tank, a microbial culture tank for purifying water in the water tank sent from the water pressure feeding means, and a microbial culture tank. Air supply means for attracting and supplying air by the fluid energy of the circulating flow for sending air, air flow detection means and auxiliary air supply means arranged in the air inflow path of the air supply means, and signals from the air flow detection means Control means for controlling the operation of the auxiliary air supply means, and the air flow detection means has an air inlet connected to the auxiliary air supply means and an air outlet connected to the air supply means. A container, a float lighter than the specific gravity of water provided movably in the container, a light-emitting body and an optical sensor that are disposed opposite to each other on both side walls of the container. Is reduced, When serial vessel was filled with water, and cut off between the light emitter and the light sensor by said float, said auxiliary air supply means for driving structure and the water purification device.