JPH0677898U - Pumping cylinder - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a pumping cylinder that improves the water quality by improving the convection of water in lakes and reservoirs. By efficiently stirring deep water and air with a simple structure, An object of the present invention is to provide a pumping cylinder that can easily take in dissolved oxygen into deep water discharged from the upper part of the cylinder. A pumping cylinder in which compressed air is sent into an air chamber and is intermittently blown out through a cylinder when the air chamber is filled with a predetermined amount, the air filled in the air chamber and the air There is at least two communication pipes for guiding water in the vicinity of the chamber into the cylinder, the openings of the communication pipes on the side wall of the cylinder are opposed to each other, and the opening ratio of the water intake portion on the bottom is determined by the installation environment. It is configured so that it can be adjusted accordingly.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water pump for improving the water quality by improving the convection of water between the surface of lakes and reservoirs and the deep layer.

In recent years, in many lakes and reservoirs, eutrophication is rapidly progressing due to the inflow of nutrients such as nitrogen and phosphorus. Such eutrophication causes a spoilage odor and a mold odor, and also causes an abnormal generation of algae.

[0003] If the above situation occurs, it may lead to obstacles to water use, deterioration of the environment, etc. Therefore, it is desired to prevent eutrophication of lakes and reservoirs and improve water quality.

[0004]

[Prior art]

 Conventionally, an air blow-out tube is installed vertically in the water to be treated, and compressed air is sent into the air chamber provided underneath it to use the siphon action to intermittently blow out the air. There is known a sewage purification device that generates convection in water near the body (for example, Japanese Examined 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.

By such an operation, 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 surface water rich in oxygen and oxygen is supplied. By repeating the above operation, convection of the treated water is realized.

[0007] However, although the above-mentioned device has a predetermined effect in that convection is generated by forcibly pushing up and discharging deep water to the surface layer, the surface water and deep water are naturally mixed. Therefore, there is a drawback in that it is not possible to efficiently mix anoxic deep water with surface oxygen rich water, that is, to take dissolved oxygen into the deep water efficiently.

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

However, the above-mentioned configuration has a drawback in that the deep water and the air cannot be sufficiently agitated and the apparatus becomes complicated by providing the agitating means.

[0010]

[Problems to be solved by the device]

 The present invention has been made in view of the above circumstances, and by efficiently stirring and pumping deep water and air with a simple structure, the deep water efficiently discharged from the upper part of the cylinder according to the installation environment. The objective is to provide a water pump that can contain a large amount of dissolved oxygen.

[0011]

[Means for Solving the Problems]

 The pumping cylinder of the present invention sends compressed air to the air chamber and intermittently blows it out through the cylinder when the air chamber is filled with a predetermined amount of air. A pumping cylinder having at least two communication pipes for guiding water in the vicinity of the air chamber into the cylinder, the pumping cylinder being provided so that openings of the communication pipe in the side wall of the cylinder face each other. The opening area of the water intake can be adjusted according to the installation environment.

In addition, the opening area of the water intake portion on the bottom of the pumping cylinder can be changed in the range of 10% to 90% according to the installation environment such as the water depth at the installation position, the area covered, and the change in water temperature. be able to.

[0013]

[Action]

 This invention sends compressed air into an air chamber and intermittently blows it out through a cylinder when the air chamber is filled with a predetermined amount, so that the air discharged from the air chamber and the water in the vicinity of the air chamber are discharged. Through the communication pipes provided so that the openings face each other, and collide with each other inside the above-mentioned cylindrical body, and for example, water in a low oxygen state and oxygen in the air are forcibly mixed and stirred. It is a water pump.

As a result, the 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, A lot of dissolved oxygen is taken in. Especially, the opening area of the water intake on the bottom of the pumping cylinder can be adjusted according to the installation environment, such as the water depth of the installation site and the area covered. Therefore, it is possible to pump deep water efficiently and to expect a water purification action.

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

[0016]

【Example】

 FIG. 1 is a vertical sectional side view showing a configuration of an embodiment of a pumping cylinder according to the present invention. 2 is a plan view taken along the arrow AA in FIG. 1, and FIG. 3 is a bottom view taken along the arrow BB in FIG.

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

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

Since a method of mooring the pump at a predetermined position while making the pump stand by itself using the float, the wire, the weight, and the anchor is well known, and a description thereof will be omitted here.

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

An air supply pipe 8 is vertically penetrated through the center of the partition plate 7 forming the bottom surface of the bottomed cylindrical body 1 a, and one end thereof is opened inside the air chamber 2. The other end penetrates the side wall of the bottomed cylinder 1a 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 an upper bottom, and its lower end side is an opening. There is.

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

In addition, a lower cutting surface of the cylindrical body 12 which is concentrically provided inside the cylindrical body 11 and a lower cutting surface of the cylindrical body 13 which is concentrically provided outside the cylindrical body 11 have a donut shape. A concentric box body closed by the partition plate 14 is fitted and fixed to the cylindrical body 11.

Further, a cylindrical body 15 is concentrically provided on the outside of the cylindrical body 13, the upper surface of which is closed by a donut-shaped partition plate 16 and is fixed to the end of the conical flange 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 so as to open into a space communicating with the inside of the air chamber 2.

In the above-mentioned configuration, the opening between the cylindrical body 13 and the cylindrical body 15 is reduced to an arbitrary ratio by the baffle plate 17 shown by the diagonal lines as shown in the bottom view of FIG. There is.

By adjusting the opening ratio between the cylindrical body 13 and the cylindrical body 15 as described above, the intake amount of deep water is adjusted, and the optimum pumping efficiency according to the installation environment can be obtained. Such an opening ratio is appropriately adjusted in the range of, for example, 10% to 90% according to the water depth of the installation place, the shared area per pumping cylinder, and the like.

To adjust the opening ratio, several types of donut-shaped opening ratio adjusting plates 20 having intermittently formed baffle plates 17 and openings 18 as shown in FIG. 4 are prepared and installed. It is possible to install the one that suits the environment. The mounting can be done by appropriate means such as bolting or welding, but bolt holes etc. are omitted.

Further, by using a plurality of aperture ratio adjusting plates 20, which are typical aperture ratios, and gradually changing the portion of the baffle plate 17 to increase or decrease the overlapping portion of the baffle plate 17, the opening ratio is adjusted. It is also possible to finely adjust the ratio.

For example, if two baffle plates 17 occupy 20% of the entire aperture ratio adjusting plate 20 are prepared, it is possible to change from 20% to a maximum of 40%. If it is 30%, it can be adjusted from 30% to a maximum of 60%.

In the above structure, if pressurized air (a pressure slightly higher than the water pressure in the air chamber) is sent from the air supply hose 9 as shown by the arrow, first, the cylinder with a bottom is passed through the air supply pipe 8. The water that has entered the body 1c and is filled in the bottomed cylindrical body 1c is pushed down.

Then, when the water level reaches the lower end of the opening of the bottomed cylindrical body 1c, the overflowed air overflows into the air chamber formed by the conical flange 10 and the cylindrical body 11, and the water filled in the space is Pushed down. At this time, the water between the cylindrical bodies 11 and 12 is also pushed down at the same time.

In this state, when the water level reaches the lower end of the cylindrical body 11, the air is rapidly discharged in the direction indicated by the solid arrow by the siphon action. At this time, the water filled between the cylindrical body 11 and the cylindrical body 13 is pushed up, and the water filled between the cylindrical body 13 and the cylindrical body 15 is also drawn in as shown by the dotted arrow, It is introduced into the bottomed cylindrical body 1 a through the communication pipes 5 and 6.

In this case, the water flow indicated by the dotted arrow is an amount adjusted by the baffle plate 17. Paradoxically, the adjustment of the opening ratio by the baffle plate 17 should be adjusted so as to optimize the amount of water indicated by the dotted arrow according to the conditions of the installation location.

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 deep water in a low oxygen state, and the amount of dissolved oxygen increases.

The air lump entrained with the water thus stirred rises like a shell in the bottomed cylindrical body 1a (and the cylindrical body 1b). The water in the bottom cylinder 1a is pushed up, and the water is sucked in through the opening in the lower part of the air chamber.

The rising speed of the air mass can be controlled by adjusting the opening ratio by the baffle plate 17.

As described above, the air mass rapidly rises due to the buoyancy, so that the water rapidly rises following it.

When the air in the air chamber 2 is exhausted in this way, the air chamber 2 is filled with water again, and the same pressurized air as described above is accumulated. In this manner, 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 part of the air chamber 2 also rises intermittently, and the bottomed cylindrical body 1a (and the cylinder 1a It is released to the upper end via the body 1b).

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 lump entrained with water is made to collide with the bottomed cylindrical body 1a, and the amount of water taken in is adjustable, so that a special stirring means is used. Air and water are sufficiently agitated without provision. As a result, oxygen is taken into deep water in a low oxygen state, and the amount of dissolved oxygen is increased.

In the above-described embodiment, two communication pipes 5 and 6 are provided as the cylindrical body for guiding the air entrained with water, but the number is arbitrary as long as it is two or more. The point is that the number of air masses containing water can be collided.

[0045]

[Effect of device]

 As described above in detail, according to the present invention, the deep water capable of adjusting the water amount with a simple structure and the air are efficiently stirred while being pumped to dissolve the deep water discharged from the upper part of the tubular body. It is possible to provide a pump bottle that can contain oxygen in abundance.

[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 of FIG.

FIG. 3 is a bottom view shown by the arrow BB in FIG.

4 is a plan view showing an example of an aperture ratio adjusting plate attached to the bottom surface of FIG. 1. FIG.

[Explanation of symbols]

 1a 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 Partition plate 17 Baffle plate 18 Opening 20 Opening ratio adjusting plate

Claims (2)

[Scope of utility model registration request] 1. Compressed air is sent into an air chamber, and when the air chamber is filled with a predetermined amount of air, the compressed air is blown out intermittently through a cylindrical body, and the air filled in the air chamber and the air chamber. A pumping cylinder having at least two communication pipes for guiding water in the vicinity into the cylinder, and the water intake portion on the bottom surface of the pumping cylinder, wherein A pumping cylinder whose opening ratio can be adjusted according to the installation environment. 2. The water pump according to claim 1, wherein the opening ratio of the water intake portion on the bottom of the water pump is adjustable in the range of 10% to 90%.