JPH06181662A - Water purifier - Google Patents

Abstract

PURPOSE:To always keep the water level for the lowering thereof due to the evaporation of water in a water tank by effectively breeding a microorganism in a microbial culture tank, maintaining the purifying performance and automatically feeding water in a supply tank on a signal from a water level sensing means. CONSTITUTION:This water purifier is equipped with a hydraulic pressure feeding means 3 successively installed in a forced circulating flow passage for circulating water in a water tank 1, a microbial culture tank 5, a water circulating circuit part composed of an air feeding means 4 for inducing and feeding air by the fluid energy of a circulating stream for feeding air to the microbial culture tank 5, a water level sensing means 13 for sensing the water level in the water tank 1, a supply tank part for storing the water to be supplied to the interior of the water tank and a three-way changeover valve, attached to an air inflow passage of the air feeding means 4 and changing over the flow passage of a pipe having one end inserted into the supply tank part. Thereby, the air inflow passage is changed over on a signal from the water level sensing means 13 and water in the supply tank part is sucked up by the air sucking action of the air feeding means 4 to feed a prescribed amount of water into the water tank.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to water in an aquarium for ornamental fish,
The present invention relates to a water purifying device that purifies water in a fish tank.

[0002]

2. Description of the Related Art Generally, water tanks, artificial ponds, pools and the like are contaminated by organic substances produced by external contaminants, and the purification thereof 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 dirt due to decomposition of fish excrement and uneaten food, and contamination by propagation of pathogenic bacteria. Furthermore, pollution by nitrous acid generated in the process of decomposing nitrogen compounds such as ammonia was also a big problem.

As shown in FIG. 5, a conventional water purification apparatus of this type includes a purification module 21 made of a mineral substance in a forced circulation passage through which water in a water tank 19 is circulated by a water pressure feed means 20,
On the upstream side of the purification module 21, air supply means 22 using an ejector effect for effectively propagating aerobic bacteria to enhance purification performance and for supplying oxygen necessary for fish growth is provided (for example, Wishhei 2-216035
issue).

[0005]

However, the above-mentioned conventional structure has a problem that water must be replenished each time the water in the water tank evaporates and the water level drops.

The present invention has been made to solve the above problems, and has as its object the automatic supply of evaporated water in a water tank.

[0007]

In order to solve the above-mentioned problems, the water purification apparatus of the present invention comprises a water pumping means, a microorganism culture tank, and a microorganism culture tank, which are sequentially provided in a forced circulation passage for circulating water in the water tank. A water circulation circuit section consisting of an air supply means for attracting and supplying air by the fluid energy of a circulating flow that sends air to the tank, a water level detecting means for detecting the water level of the water tank, and a replenishment tank section for storing water to be supplied into the water tank. A three-way switching valve that is attached to the air inflow path of the air supply means and one of which switches the flow path of a pipe inserted into the replenishment tank section, and operates the three-way switching valve in response to a signal from the water level detection means to replenish the tank. The water in the section is sucked up by the air inflow passage of the air supply means and fed into the water tank by a fixed amount.

Further, a water circulation circuit section comprising a three-way switching valve provided in order in a forced circulation passage for circulating water in the water tank, a water pressure feeding means, a microorganism culture tank, and an air supply means for feeding air to the microorganism culture tank, and a water tank. Water level detection means for detecting the water level of, and a replenishment tank section communicating with the three-way switching valve for storing water to be replenished in the water tank, and the three-way switching valve is operated by a signal from the water level detection means, and the water pressure feeding means is used. It is configured such that the water in the replenishment tank part is sucked out and fed into the water tank in a fixed amount.

[0009]

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 substances enter the microorganism culture tank together with the air. The harmful substances that enter the microorganism culture tank are oxidatively decomposed and removed by the action of aerobic bacteria.

When the water in the water tank evaporates and the water level drops,
A signal from the water level detecting means activates a three-way switching valve attached to the air inflow path to replenish a certain amount of water in the replenishment tank portion into the water tank by utilizing the air attraction action.

When the water in the water tank evaporates and the water level drops, a signal from the water level detecting means activates a three-way switching valve mounted upstream of the water pressure feeding means to replenish the water tank with a fixed amount. To do.

[0012]

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

In FIGS. 1 and 2, 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 which attracts 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 microorganism fixed bed made of a mineral is enclosed downstream of the air supply means 4, and a heater 6 and a heat sterilization unit 8 in which a heater 6 and an ultraviolet lamp 7 are installed further downstream are arranged. It is installed and constitutes the purification circulation circuit.

A three-way switching valve 10a is attached to the air inflow passage 9a of the air supply means 4, one of which is inserted into the atmosphere and the other of which is inserted into the water in the replenishing tank portion 11. Reference numeral 12 is a water leakage sensor for detecting water leakage, 13 is a float switch which is water level detection means, 14 is an electromagnetic valve which interrupts the water circuit, and 15 is control means, which is a circulation pump 3, a heater 6, an ultraviolet lamp 7, and a three-way switching valve. 10a, the water leak sensor 12, the float switch 13, and the solenoid valve 14 are connected. A strainer unit 16 removes 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 manufactured by rapidly cooling slag generated from iron mills at a rate of 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.

FIG. 2 is a control system diagram of the three-way switching valve 10a. The electronic circuit 17 outputs a drive signal to the circuit section of the control means 15 in response to a signal from the float switch 13 that detects the water level in the water tank 1. The bidirectional thyristor 18 is actuated by the drive signal generated from the electronic circuit 17, and the three-way switching valve 10a is switched.

In the above structure, when the control means 15 is turned on, the solenoid valve 14 is actuated to be in the open state,
The circulation pump 3 starts operation. The water in the water tank 1 returns to the water tank 1 through the electromagnetic valve 14, the circulation pump 3, the air supply unit 4, the microorganism culture tank 5, and 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 nitrite generated from the organic matter adhere to the surface of the fixed mineral bed from the beginning. The artificially cultivated aerobic microorganisms and their activating substances, and oxygen contained in the air sucked 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 ⁺ + 1.5O ₂ → NO ₂ ⁻ + H ₂ O + H ⁺ … (1) NO ₂ ⁻ + 0.5O ₂ → NO ₃ … (2) In this way, excretion of fish in the aquarium 1 Organic substances such as food and leftover food and ammonia generated from the organic substances are oxidized to nitrates and become harmless, and the water in the aquarium 1 is purified.

When the water in the water tank 1 evaporates and the water level drops by a certain amount, the float switch 13 works and is sent to the electronic circuit 17 as a water level drop signal. This signal operates the bidirectional thyristor 18 to switch the three-way switching valve 10a. As a result, water is sucked by the air suction action from the hose 9b inserted into the water in the replenishment tank unit 11 and taken into the water circulation circuit unit. This allows
The water level in the aquarium 1 rises and the float switch 13 works,
The signal for returning to the water level is sent to the electronic circuit 17, and the bidirectional thyristor 18 is operated to switch the three-way switching valve 10a to return to normal operation.

Next, a second embodiment of the present invention will be described with reference to FIGS. 3 and 4, 1 is a water tank,
Reference numeral 2 denotes a water purifier, which is a circulation pump 3 which is a water pressure feeding means, an air supply means 4 which introduces external air into the flowing water by an ejector action which attracts air by the fluid energy of the circulation flow, and a downstream of the air supply means 4. A microorganism culturing tank 5 in which a fixed bed of microorganisms made of minerals is enclosed, and a heating sterilization unit 8 to which a heater 6 and an ultraviolet lamp 7 are attached are arranged further downstream to form a purification circulation circuit.

A three-way switching valve 10b is mounted upstream of the water pressure feeding means 3, and communicates with the replenishment tank section 11 via the three-way switching valve 10b. Reference numeral 12 is a water leakage sensor for detecting water leakage, 13 is a float switch which is water level detection means, 14 is an electromagnetic valve which interrupts the water circuit, and 15 is control means, which is a circulation pump 3, a heater 6, an ultraviolet lamp 7, and a three-way switching valve. 10b, the leak sensor 12, the float switch 13, and the solenoid valve 14 are connected. A strainer unit 16 removes 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.

FIG. 2 is a control system diagram of the three-way switching valve 10b. The electronic circuit 17 outputs a drive signal to the circuit section of the control means 15 in response to a signal from the float switch 13 that detects the water level in the water tank 1. The bidirectional thyristor 18 is actuated by the drive signal generated from the electronic circuit 17, and the three-way switching valve 10b is switched.

In the above structure, when the control means 15 is turned on, the solenoid valve 14 is actuated to be in the open state, and the circulation pump 3 starts operating. The water in the aquarium 1 is the solenoid valve 1
4, 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 nitrite generated from the organic matter adhere to the surface of the fixed mineral bed from the beginning. The artificially cultivated aerobic microorganisms and their activating substances, and oxygen contained in the air sucked 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 ⁺ + 1.5O ₂ → NO ₂ ⁻ + H ₂ O + H ⁺ … (1) NO ₂ ⁻ + 0.5O ₂ → NO ₃ … (2) In this way, excretion of fish in the aquarium 1 Organic substances such as food and leftover food and ammonia generated from the organic substances are oxidized to nitrates and become harmless, and the water in the aquarium 1 is purified.

When the water in the water tank 1 evaporates and the water level drops by a certain amount, the float switch 13 operates, and a signal for lowering the water level is sent to the electronic circuit 15. This signal operates the bidirectional thyristor 18 to switch the three-way switching valve 10b. As a result, the water in the replenishment tank section 11 is sucked out and taken into the water circulation circuit section, the water level in the water tank 1 rises, the float switch 13 works, and a signal for returning to the water level is sent to the electronic circuit 15 and sent in both directions. Sex thyristor 1
By the operation of 8, the three-way switching valve 10b is switched to return to normal operation.

[0029]

As described above, according to the water purifying apparatus of the present invention, the following effects can be obtained. (1) It is not necessary to replenish the water every time since it is automatically replenished for the evaporation of the water in the water tank, and the water level can always be kept constant. (2) Since the water is replenished by utilizing the air suction action of the ejector, a dedicated pump is unnecessary. (3) Since the circulation pump that is the water pressure feeding means is used, a dedicated pump is not required.

[Brief description of drawings]

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

FIG. 2 is a control circuit diagram for controlling the air inflow passage switching valve.

FIG. 3 is a sectional view showing the configuration of a water purification device according to another embodiment of the present invention.

FIG. 4 is a control circuit diagram for controlling the water circuit switching valve.

FIG. 5 is a cross-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 10a Three-way Switching Valve 10b Three-way Switching Valve 11 Replenishment Tank 13 Water Level Detection Means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Masayoshi Hattori, 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A water pressure feeding means sequentially provided in a forced circulation flow path for circulating water in a water tank, a microorganism culture tank, and an air supply means for attracting and supplying air by fluid energy of a circulating flow for feeding air to the microorganism culture tank. Is attached to the air inflow path of the air supply means, one of which is inserted into the replenishment tank section, the water circulation circuit section consisting of, the water level detection means for detecting the water level of the water tank, the replenishment tank section for storing water to be replenished into the water tank A three-way switching valve for switching the flow path of the pipe, the three-way switching valve is operated by a signal from the water level detecting means, and the water in the replenishing tank part is sucked up by the air inflow path of the air supply means, and a fixed amount of water tank A water purification device configured to be sent inside. 2. A three-way switching valve, a water pressure feeding means, a microorganism culture tank, which are sequentially provided in a forced circulation flow path for circulating water in the water tank,
A water circulation circuit section consisting of an air supply means for sending air to the microorganism culture tank, a water level detection means for detecting the water level of the water tank, and a replenishment tank section communicating with the three-way switching valve for storing water to be replenished in the water tank. A water purifying device comprising: a three-way switching valve that is actuated by a signal from the water level detecting means to suck the water in the replenishing tank portion by the water pressure feeding means and feed the water into a fixed amount of water tank.