JPH07136672A - Aerator - Google Patents

Abstract

PURPOSE:To conduct aeration uniformly and efficiently saving the energy by atomizing air sucked into water and ejecting the air radially in an aerator installed at a depth suitable to a water area. CONSTITUTION:An aeration system comprises a float F which is held at a specified place on the water surface of a closed water area such as pond, lake, marsh, etc., or river, harbor, etc., a frame K which is fixed at the lower end of a supporting rod L hung from the float and the depth of which is made changeable by the supporting rod, self-contained type aerators B which are fixed on the frame, and a high pressure pump p which feeds high pressure water to the aerators through a water supply pipe H2. In the aerator, fluid discharge nozzles are installed which have discharge nozzle holes with a ring cone shape so that sucked air is atomized by high pressure water discharged from the inner and outer periphery of a cylindrical nozzle to be mixed with water and jetted into water together with the high pressure water for aeration. Also, cylindrical nozzles are installed which are located in series at one end of the extended line of longitudinal shaft center of the fluid discharge nozzles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerator suitable for efficiently aerating polluted water in various ponds, rivers, harbors and the like.

[0002]

[Background Art] Dead leaves and other organic substances flow into aquaculture ponds, ponds, other ponds provided in golf courses, closed water areas such as lakes, rivers, and harbors, and they decompose and produce a foul odor. In addition, water quality is polluted by the inflowing substance, and water-bloom etc. are generated. Especially in aquaculture ponds, it is important to purify water quality. For this reason, in the aquaculture pond, a stirrer is installed on the pond to stir the water surface and forcibly make contact between water and air. In addition, since the water is not stirred in the pond of the golf course, the quality of the water is deteriorated by the inflowing organic matter, giving off a bad odor and causing a bad odor pollution to nearby residents.

[0003]

Conventionally, as a stirring and aerating machine for water, a screw is arranged on the surface of water or in water, and a screw is forcedly rotated by a power generator to supply the atmosphere to the water. There is. For this reason, the water surface of the sewage can be sufficiently agitated, but it is difficult to agitate in deep water, and the aerator drive part is located in the water or at the place where water enters, and the drive part is driven by water or impurities contained in the water. Is liable to malfunction and requires regular inspection and maintenance. Further, it is known that when air taken in water is crushed into bubbles, the finer the bubbles of the air are, the more the solubility is improved. However, in the method of forcibly stirring water by rotating the screw, there is a limit to the miniaturization and a large amount of power is required.

The present invention is an aerator installed at a water depth suitable for a water area, in which the gas inhaled into water is made as small as possible and is sprayed in the radial direction to be uniform, energy-saving and efficient aeration. The purpose is to

[0005]

The present invention has been made to achieve the above object, and includes a float moored in a closed water area such as a pond or lake, or at a predetermined water surface such as a river or port, A stand fixed to the lower end of a support rod hung on the float, where the water depth position can be changed by the support rod, a plurality of self-contained aerators attached to this stand, and high-pressure water is supplied to this aerator. It is composed of a high-pressure pump supplied through a pipe, and the high-pressure water discharged from the inner and outer circumferences of the cylindrical nozzle of this aerator crushes the intake air to atomize and mix it,
A fluid discharge nozzle having a ring-cone-shaped discharge nozzle hole so as to jet and aerate high-pressure water into water, and a cylindrical nozzle arranged in series at one end on the extension line of the longitudinal axis of the fluid discharge nozzle. And a hose for supplying high-pressure water to the fluid discharge nozzle and the tubular nozzle by projecting the tubular nozzle on the side surface of the fluid discharge nozzle so that the discharge flow of the cylindrical nozzle is inside the fluid discharge nozzle. The small-diameter tube portion at the tip of the tubular nozzle is inserted into the inner peripheral nozzle of the fluid discharge nozzle with a gap, and a small amount of gas is sucked from the air chamber to the outer peripheral portion of the thin-tube portion of the cylindrical nozzle. The point is to make a hole.

[0006]

[Operation] One or more self-contained aerators are attached to the lower end of a support rod suspended from a float moored at a predetermined position on the water surface, and to a pedestal whose installation water depth position is adjustable by this support rod. A high-pressure pump for supplying high-pressure water via a hose and an intake hose equipped with a valve for adjusting the intake amount are connected to the aerator. And this aerator
A fluid discharge nozzle equipped with a ring-cone-shaped discharge nozzle hole adapted to crush and inhale intake air with high-pressure water discharged from the inner and outer circumferences of a cylindrical nozzle, and inject it into water together with high-pressure water for aeration , A cylindrical nozzle arranged in series at one end on the extension line of the longitudinal axis of the fluid discharge nozzle. Therefore, the negative pressure generated by the high-pressure water discharged from the inner and outer circumferences of the cylindrical nozzle sucks air or gas from the slit nozzles on the outer circumference of the cylindrical nozzle, and the sucked gas has a plurality of discharge high pressures. It is crushed by water and made as fine as possible, and then mixed with liquid at high speed and jetted and discharged. Furthermore, since this aerator is installed at a predetermined water depth and with the nozzle direction in the radial direction, aeration can be performed more effectively, and agitation by the discharge pressure can also be performed, so that even if the water depth is deep, it is uniform. Aeration can be performed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The aeration apparatus of the present invention will be described below with reference to the illustrated embodiments. The aeration device of the present invention moorizes a float F, which is arranged in a closed water area such as a pond or lake, or at a predetermined position on the water surface of a river, a harbor or the like, by mooring it to a predetermined position with a mooring line W. A support rod L is vertically installed on the base, and a pedestal K is fixed to the lower end of the support rod L, and the installation water depth position of the pedestal can be adjusted and adjusted by this support rod. Further, one or a plurality of self-contained aerators are mounted on the pedestal. B is attached to the aerator B, and high-pressure water is supplied from the high-pressure pump P installed on the ground side directly to the water supply pipe H1 or from the tank T attached to the bottom surface of the float F via the water supply hose 4 and the air supply is performed. Valve V
Are configured to be supplied via the air supply pipes H2.

This aerator B has two or more liquid discharge nozzles 3A and 3B arranged and fixed in series so as to be integrated as shown in FIG. 1, or has a required size as shown in detail in FIG. The flange 2 is attached to one side surface of the casing 1 of the aerator main body having the above, and one or more liquid discharge nozzles 3A and 3B are arranged in series and inserted into the cavity 1R of the casing 1, and the fluid discharge nozzle 3A , 3B are sandwiched between the casing 1 and the flange 2, and a water supply pipe 4 for supplying water or liquid is connected to the outer surface of the casing 1.
The aerator B has the same configuration as that shown in FIG. 1 and that shown in FIG. 2 except that a casing is not used and a cylindrical nozzle described later is integrally formed on one liquid discharge nozzle 3A side. And, the effect is the same.

The flange 2 is arranged so that the longitudinal axis of the cylindrical portion 21 projecting from the center thereof and the longitudinal axes of the liquid discharge nozzles 3A and 3B fixed in the casing are aligned. The tubular nozzle 5 is fitted and fixed in the tubular portion 21 of the flange 2, and the rear end of the tubular nozzle 5 and the water distribution joint 6 protruding from the casing 1 are connected by a hose 7. As a result, a part of the water supplied into the casing 1 is supplied to the tubular nozzle 5. As shown in FIG. 1, when two or more liquid discharge nozzles 3A and 3B are arranged and fixed in series and integrated, a water supply hose and an air supply hose are connected to each liquid discharge nozzle. .

A concave annular air chamber 21R is formed in the central outer peripheral portion of the tubular nozzle 5 fitted in the tubular portion 21, and air or oxygen or other gas is supplied into the air chamber 21R. The trachea H2 is connected to the tube portion 21. This air supply pipe H2
A flow rate adjusting valve V is provided at or at the tip of the air supply valve so that the amount of air supplied to the air chamber 21R can be adjusted, and the tip of the air supply pipe H2 is opened to the atmosphere.

The longitudinal axis of the injection pipe 10 connected to the center of the side surface of the casing 1 on the side opposite to the cylindrical nozzle 5 of the casing 1 and the longitudinal axes of the cylindrical nozzle 5 and the fluid discharge nozzles 3A, 3B are on the same axis. Arrange to match and arrange.

Further, since the liquid discharge nozzles 3A and 3B arranged in the casing 1 have the same structure, one of the liquid discharge nozzles 3A will be described below. This nozzle 3A
As shown in FIG. 3, is composed of an inner peripheral nozzle piece 31 having a required conical cylindrical shape and an outer peripheral nozzle piece 32 into which the inner peripheral nozzle piece 31 is fitted. The inner peripheral nozzle piece 31 has an outer peripheral surface having a conical shape having a required inclination angle, and has a straight tubular inner hole 31a inside.
The outer peripheral nozzle piece 32 has a concave groove 32a formed in the inside thereof over the entire inner circumference of the substantially central portion of the conical surface into which the inner peripheral nozzle piece 31 is fitted. The groove 32a is formed in the shape of a square arc or other desired cross-sectional shape and size in addition to the rectangular arc shape shown in the drawing, and also has a conical shape on both sides of the groove with the groove 32a interposed therebetween. To form the conical surfaces 32b and 32c, and one of the conical surfaces 32b is fitted in the outer peripheral nozzle piece 32 so as to be in contact with the inner peripheral nozzle piece, and the inner peripheral nozzle piece 31 is firmly held, and the other conical surface 32b is fixed. A small gap is formed between the conical surface 32c and the outer peripheral surface of the tip of the inner peripheral nozzle piece 31, and this clearance is used as a ring-shaped nozzle hole 33. The nozzle hole 33 is formed into a desired cone angle by slightly inclining the shape of the outer peripheral surface 31b of the inner peripheral nozzle piece, for example, the center line of the nozzle hole as shown in the drawing.

Reference numeral 32h in the drawing is a water supply hole for supplying high-pressure water from the inside of the casing into the concave groove of the outer peripheral nozzle piece, and a water supply pipe is connected to this water supply hole when the casing is not used.

The operation of the aeration apparatus of the present invention constructed as described above will be described below. The float F is disposed at a predetermined water level, is moored by the wire W, and the aerator B at the lower end of the support rod L is set at a predetermined water level via the elevating means E such as a rack and pinion type provided on the float.
A water supply pipe H2 and an air supply pipe H between the ground side pump P and the aerator B
Connect 1. Then, by driving the high-pressure pump P installed on the ground side, high-pressure water having a predetermined pressure is sent to the water supply tank T via the water supply pipe H1. At this time, a self-cleaning filter FT is provided on the water absorption side or the discharge side of the pump to remove impurities in the high-pressure water, and the high-pressure water is supplied from the water supply tank to the liquid discharge nozzle 3A at a predetermined pressure by the water supply pipe 4. , 3B
Alternatively, when it is supplied into the main body casing 1, it is guided into the circular cavity 1R in the casing, and is tangential to the outer peripheral surface of the liquid discharge nozzles 3A and 3B arranged in the cavity and also in the inner concave groove. It is introduced into the nozzles 3A and 3B through a hole 32h which is bored in the direction. And while ejecting at a higher speed than the ring-shaped nozzle at the tip of each liquid ejection nozzle,
The high-pressure water supplied into the cavity 1R, which is not introduced into the liquid discharge nozzle, is supplied to the tubular nozzle 5 through the water distribution joint 6 and the hose 7.

The high pressure water supplied to the cylindrical nozzle 5 is
The liquid is discharged at high speed from the tip to the inside of the inner hole 31a of the liquid discharge nozzle 3A or the tip of the inner hole 31a arranged on the axis of the same chamber. At this time, air is sucked and discharged from a ring-shaped slit nozzle formed on the outer periphery at the tip of the cylindrical nozzle. Since the slit nozzle and the air chamber 21R are electrically connected to each other, the negative pressure generated at the tip of the nozzle when the high-pressure water is ejected from the liquid discharge nozzle causes the air or gas in the air chamber 21R to flow from the slit nozzle. Is sucked and swirled and discharged into the liquid discharge nozzle, crushed by the high-pressure water discharged from the tubular nozzle 5, mixed with the high-pressure water, and ejected as fine bubbles. The ejection amount of this air or gas is adjusted to the optimum amount by operating the flow rate adjusting valve V.

When the high-pressure water discharged from the cylindrical nozzle 5, the air suction slit nozzle and the air sucked by the negative pressure generated in the liquid discharge nozzle are crushed and mixed and discharged into the liquid discharge nozzle. , With the high-pressure water that flows down through this fluid discharge nozzle and is discharged from the ring-shaped nozzle,
The air is further crushed and atomized into micron units, whereby the air-mixed water discharged from the injection pipe 10 is jetted in a cloudy or nearly transparent state. In this state of being further miniaturized and mixed with high-pressure water, air becomes a state in which the high-pressure discharge water is dissolved and is discharged into the water through the injection pipe 10, and the air is supplied to the dirty water to be efficiently dissolved, The desired aeration is performed.

Further, a small hole 5H is formed in the outer peripheral surface of the small diameter tube 51 formed at the tip of the tubular nozzle 5 in the air chamber 21R, and a part of the air in the air chamber 21R passes through the small hole and becomes thin. It is also supplied to the inside of the diameter pipe to promote further miniaturization.
The air supplied by this method becomes ultrafine bubbles, and the jetted water becomes cloudy or nearly transparent, and the solubility of oxygen is further improved.

[0018]

The aeration apparatus of the present invention is fixed to a float moored in a closed water area such as a pond, a lake or a marsh, or at a predetermined water surface such as a river or a harbor, and a lower end of a support rod suspended from the float. It consists of a stand whose installation water depth is variable with a support rod, a plurality of self-contained aerators attached to this stand, and a high-pressure pump that supplies high-pressure water to this aerator through a water supply pipe. High pressure water is supplied to the fluid discharge nozzle and cylindrical nozzle of the aerator, and the suctioned air is discharged by using the negative pressure generated by ejecting the high pressure water of the liquid discharge nozzle to the outer periphery of the tip of the cylindrical nozzle. A slit nozzle is formed in the casing cylinder part, and this suctioned air is crushed by discharge high-pressure water, atomized into micron units and mixed, and jetted in a radial direction from a support rod together with high-pressure water into dirty water of a predetermined depth. Aerate Since the form, the air sucked into the water is very small reduction, has advantages such improved dissolved of gas, aeration efficiency is greatly improved compared with the prior art.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing a state in which the aeration apparatus of the present invention is installed in a closed water area.

FIG. 2 is a vertical sectional front view showing an embodiment of an aerator used in the present invention.

FIG. 3 is an explanatory diagram of a fluid discharge nozzle of the aerator of the present invention.

FIG. 4 is a vertical sectional front view showing another embodiment of the aerator used in the present invention.

[Explanation of symbols]

 B Aerator F Float H Water supply pipe H2 Air supply pipe L Support rod P High pressure pump V Flow rate adjusting valve 1 Casing 2 Flange 21 Tube 21R Air chamber 3A, 3B Fluid discharge nozzle 4 Water supply tube 5 Cylindrical nozzle 51 Thin cylindrical nozzle Diameter tube 5H Small hole 10 Injection pipe

Claims (4)

[Claims] 1. A float moored in a closed water area such as a pond, a lake or a marsh, or at a predetermined water surface such as a river or a harbor, and is fixed to the lower end of a support rod suspended from the float and installed by the support rod. It consists of a stand with variable water depth position, a plurality of self-contained aerators attached to this stand, and a high-pressure pump that supplies high-pressure water to this aerator through a water supply pipe, and this aerator is a cylinder. -Like fluid discharge nozzle equipped with a ring-cone-shaped discharge nozzle hole so that the intake air is crushed and finely mixed by high-pressure water discharged from the inside and outside of the nozzle, and is injected into water together with the high-pressure water for aeration. The fluid discharge nozzle comprises a tubular nozzle arranged in series at one end on the extension line of the longitudinal axis of the fluid discharge nozzle, and the discharge flow of the tubular nozzle is inside the fluid discharge nozzle. Protruding into the fluid A hose for supplying high-pressure water is connected to the discharge nozzle and the cylindrical nozzle, and the small-diameter pipe portion at the tip of the cylindrical nozzle is inserted into the inner peripheral nozzle of the fluid discharge nozzle with a gap, and the cylindrical nozzle An aerator characterized in that a small hole for sucking gas from an air chamber is bored in the outer peripheral portion of the diameter pipe portion. 2. The aeration apparatus according to claim 1, wherein a plurality of self-contained aerators are attached to the pedestal at the lower end of the support rod at predetermined intervals in the radial direction around the support rod. 3. The aerating device according to claim 1, wherein the float is provided with an elevating means for elevating a support rod vertically installed on the float. 4. The aeration apparatus according to claim 1, wherein the float is provided with a water tank to which high-pressure water is temporarily supplied from a pressure pump installed on the ground, and each aeration machine is provided with a water tank for supplying water through each pipe.