JPH0639840Y2 - Pumping cylinder - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water pump that improves convection of water in lakes and reservoirs and improves water quality.

In recent years, in many lakes and reservoirs, eutrophication has rapidly progressed due to the inflow of nutrient salts such as nitrogen and phosphorus. Such eutrophication causes the generation of rotten odors and musty odors, and also causes the abnormal occurrence of algae.

When the above-mentioned situation occurs, it causes water damage and environmental deterioration. Therefore, it is desired to prevent eutrophication of lakes and reservoirs and improve water quality.

[0004]

2. Description of the Related Art Conventionally, an air blowing cylinder is vertically installed in the water to be treated, and compressed air is fed into an air chamber provided under the water to intermittently blow out the air by utilizing a siphon action. There is known a sewage purification device which generates convection in the water in the vicinity of the cylinder (for example, Japanese Patent Publication No. 42-5795).

According to this device, the air chamber is provided in the outer peripheral portion of the lower portion of the tubular body, and when a predetermined amount of air is accumulated in the air chamber, the air is provided in the central portion of the tubular body. It is guided to the inside of the cylinder through the air supply pipe and rises as an air bullet inside the cylinder.

As a result, the deep water inside the cylinder is pushed up, and new deep water is introduced into the cylinder from the lower water inlet. The deep water ejected from the upper part of the cylinder is mixed with the surface water containing rich oxygen to supply oxygen. Convection of the water to be treated is realized by repeating the above operation.

However, although the above-mentioned device has a predetermined effect in that convection is generated by forcibly pushing up deep water and discharging it to the surface layer, the mixing of surface water and deep water is left to itself. Therefore, there is a drawback in that it is impossible to efficiently mix anoxic deep water and surface oxygen rich water, that is, to take dissolved oxygen into the deep water efficiently.

In order to eliminate such a drawback, an attempt has been made to provide agitating means such as a protrusion in the passage of the air bullet in the cylinder to agitate deep water and air to pump water.

However, the above-mentioned structure has a drawback that the deep water and air are not sufficiently stirred, and the apparatus becomes complicated by providing the stirring means.

[0010]

The present invention has been made in view of the above circumstances, and is discharged from the upper part of the cylindrical body by efficiently agitating deep water and air with a simple structure to pump water. It is an object of the present invention to provide a water pump that can easily take dissolved oxygen into deep water.

[0011]

DISCLOSURE OF THE INVENTION The pumping cylinder according to the present invention is a pumping cylinder in which compressed air is sent into an air chamber, and when the air chamber is filled with a predetermined amount, it is intermittently blown out through a cylinder. In at least two communication pipes for guiding the air filled in the air chamber and the water in the vicinity of the air chamber into the cylinder, the openings of the communication pipe on the side wall of the cylinder are provided so as to face each other. It is a thing.

An air supply pipe for compressed air to be sent to the air chamber is provided at the center of the air chamber, and one end of the communication pipe is fixed to an end of the air chamber.

[0013]

According to the present invention, the compressed air is sent to the air chamber, and when the air chamber is filled with a predetermined amount, the air is discharged from the air chamber in a pumping cylinder that is intermittently blown out through the cylinder. And water in the vicinity of the air chamber are caused to collide in the inside of the cylindrical body by passing through a communication pipe provided so that the openings are opposed to each other, and for example, oxygen-free water and oxygen in the air are forcibly mixed. It was made to stir.

As a result, pumping is performed in a state in which a predetermined amount of oxygen is taken into the anoxic deep water, so that the mixing efficiency of the deep water and the surface water discharged from the upper part of the cylinder is improved, and the dissolved water is dissolved. Oxygen can be taken in easily.

Further, since the compressed air is sent from the central portion of the air chamber and discharged from the end portion of the air chamber, the structure of the communication pipe connecting the air chamber and the cylinder is simplified, and the manufacturing cost is reduced. Maintenance and the like can be easily performed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a vertical sectional side view showing the construction of a first embodiment of a pumping cylinder according to the present invention. FIG. 2 is a plan view taken along the line AA in FIG.

In the figure, 1a is a bottomed cylindrical body, and an air chamber 2 is formed in the lower part thereof. Bottomed cylinder 1a
Can be fixedly connected to the flange 4 of the cylindrical body 1b by the flange 3, and the length of the cylinder can be adjusted as necessary.

On the upper side wall of the bottomed cylindrical body 1a (when the cylindrical body 1b is connected, the upper side wall of the cylindrical body 1b), a float made of, for example, foamed synthetic resin is attached. Further, a weight is connected to the lower part of the air chamber 2 by a wire, and an anchor is further connected to the weight so as to be fixed to the bottom of the lake (neither is shown).

The method of making the pump stand by itself with the float, the wire, the weight, and the anchor is well known, and the description thereof is omitted here.

At a predetermined position below the bottomed cylindrical body 1a,
Communication pipes 5 and 6 communicating with the air chamber 2 are fixed, and openings of the communication pipes 5 and 6 in the inner wall of the bottomed cylindrical body 1a are provided so as to face each other.

An air supply pipe 8 is vertically penetrated through the center of a partition plate 7 forming the bottom surface of the bottomed cylindrical body 1a, and one end thereof is opened inside the air chamber 2. The other end has a bottomed cylinder 1.
It penetrates the side wall of a and is guided to the outside.
An air supply hose 9 is connected to the air supply pipe 8 so that air is supplied by a compressor (not shown).

At the center of the air chamber 2, there is provided a bottomed cylindrical body 1c having a partition plate 7 constituting the bottom surface of the bottomed cylindrical body 1a as its upper surface, and its lower end side is an opening. .

Further, a conical flange 10 having a partition plate 7 portion as a substantially base portion is fixed to the bottomed cylindrical body 1a, and the bottom circumferential portion of the conical flange 10 serves as a peripheral surface. The air chamber 2 is formed by fixing the cylindrical body 11 to be fixed.

The lower cutting surface of the cylindrical body 12 concentrically provided inside the cylindrical body 11 and the lower cutting surface of the cylindrical body 13 concentrically provided outside the cylindrical body 11 are formed in a donut shape. A box body closed by a partition plate 14 is fitted and fixed to the cylindrical body 11.

Further, a cylindrical body 15 is concentrically provided on the outer side of the cylindrical body 13, and the upper surface thereof is a donut-shaped partition plate 16.
And is fixed to the end portion of the conical collar 10.

It should be noted that one end of each of the communication pipes 5 and 6 on the air chamber 2 side is fixed to the partition plate 16 and opened into a space communicating with the inside of the air chamber 2.

In the above structure, from the air supply hose 9,
When pressurized air (a pressure slightly higher than the water pressure in the air chamber) is fed in as shown by the arrow, first, the air enters the bottomed cylindrical body 1c through the air feeding pipe 8 and is filled in the bottomed cylindrical body 1c. The water is pushed down. Then, when the water level reaches the lower end of the opening of the bottomed cylindrical body 1c, the overflowing air causes the conical flange 10 and the cylindrical body 11 to flow.
The water that overflows into the air chamber and is filled in the space is pushed down. At this time, the cylindrical body 11 and the cylindrical body 12
The water between and is also pushed down at the same time.

In this state, when the water level reaches the lower end of the cylindrical body 11, air is rapidly discharged in the direction indicated by the solid arrow by the siphon action. At this time, the cylindrical body 11
The water filled between the cylinder body 13 and the cylinder body 13 is pushed up, and as shown by the dotted arrow,
The water filled in the space is also entrained, and is guided into the bottomed cylindrical body 1a through the communication pipes 5 and 6.

Here, since the opening of the communication pipe 5 and the opening of the communication pipe 6 are provided so as to face each other, the air entrained with water that has passed through the communication pipes 5 and 6 has a bottomed cylindrical body. Water and air are agitated by violent collision at the bottom of 1a. A large number of bubbles are generated by this agitation, and an air mass containing water is formed. As a result, oxygen is taken into the anoxic deep water, and the amount of dissolved oxygen increases.

The air mass containing the water thus stirred rises like a shell in the bottomed cylindrical body 1a (and the cylindrical body 1b). The water in the cylindrical body 1a is pushed up, and the water is sucked from the opening in the lower part of the air chamber.

That is, since the air mass rapidly rises due to the buoyancy, the water rapidly rises following it.

When the air in the air chamber 2 is exhausted in this way, the air chamber 2 is again filled with water and the same pressurized air as described above is accumulated. In this way, as a result of the air in the air chamber 2 being intermittently blown out, the water sucked from the suction port formed in the lower portion of the air chamber 2 also rises intermittently, and the bottomed cylindrical body 1a (and the cylindrical body 1a 1b)
Is discharged to the upper end via.

The pumping interval is controlled according to the inflow velocity of air into the air chamber 2, and is, for example, 10 to 15 seconds.

As described above, according to this embodiment, the air lumps entrained with water are caused to collide with each other in the bottomed cylindrical body 1a, so that the air and the water are sufficiently supplied without providing any special stirring means. Be stirred. As a result, oxygen is taken into deep water in anoxic state, and the amount of dissolved oxygen is increased.

In the above embodiment, two communication pipes 5 and 6 are provided as the cylindrical body for guiding the air containing water, but the number is arbitrary as long as it is two or more. In short,
It may be any number as long as it can collide air masses containing water.

[0036]

As described above in detail, according to the present invention,
By efficiently stirring and pumping deep water and air with a simple configuration, it is possible to provide a pump having a deep water discharged from the upper part of the tubular body, in which dissolved oxygen can be easily taken in.

[Brief description of drawings]

FIG. 1 is a vertical side view showing an embodiment of the structure of a pumping cylinder according to the present invention.

FIG. 2 is a plan view taken along the line AA in FIG.

[Explanation of symbols]

 1a, 1c Bottomed cylindrical body 1b Cylindrical body 1c Bottomed cylindrical body 2 Air chamber 3,4 Flange 5,6 Communication pipe 8 Air supply pipe 9 Air supply hose 10 Conical flange 11,12,13,15 Cylindrical body 7,14 , 16 dividers

Claims (2)

[Scope of utility model registration request] 1. A pumping cylinder in which compressed air is sent into an air chamber and is intermittently blown out through a cylinder when a predetermined amount of the air chamber is filled with the air filled in the air chamber. A pumping cylinder having at least two communication pipes for guiding water in the vicinity of the air chamber into the cylinder, and openings provided on the side wall of the cylinder of the communication pipes facing each other. 2. An air supply pipe for compressed air to be fed into the air chamber is provided in a central portion of the air chamber, and one end of the communication pipe is fixed to an end portion of the air chamber. Pumping cylinder.