JP2539191Y2 - Air pumping equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water pumping device using air for pumping bottom water such as a dam reservoir, a tidal marsh, and a reservoir to an upper layer.

[0002]

2. Description of the Related Art Conventionally, as a pump of this type, an air chamber and an air discharge pipe are provided at a lower end of a pumping cylinder having a floating chamber formed on an upper outer side, a water suction port is provided, and a lower end of the pumping cylinder is provided at a bottom of a pond. It is known that the mooring is performed, the upper end of the pumping cylinder is positioned below the water surface, air is supplied into the air chamber, and the water in the pumping cylinder is raised by rising the air mass.

[0003]

[Problems to be Solved by the Invention] In the above-mentioned prior art, it is difficult to set the position of the upper end of the pumping cylinder when installing in a dam reservoir where the high water level and the low water level change greatly. When it is above the water surface or at high water level, the height to the water surface is large, and the amount of water carried by the air mass is small.
In addition, there is a problem that the diffusion is diffused.

[0004] The present invention has been made in view of the above-described situation, and an object of the present invention is to stably maintain the upper end of a pumping cylinder at a constant height below the water surface regardless of fluctuations in the water level.
Manner to provide an airlift device capable of position.

[0005]

Means for Solving the Problems In the present invention, the following technical measures have been taken to achieve the above object. That is, the present invention is continuously provided a plurality of pumping cylinders freely vertically extendable, respectively float Each pumping cylinder is provided, a water inlet provided with an air chamber and an air discharge pipe provided under end of the lowermost pumping tube, mooring the bottom pumping cylinder to Ikezoko, it is characterized in that the upper end of the uppermost pumping cylinder is positioned below the surface of the water, providing the upper outer the water damper vertical vibration preventing the perimeter of top pumping tube.

[0006]

According to the present invention, compressed air is sent from the ground to the air chamber through an air pipe, and when the air chamber is filled with a certain amount of air, the air intermittently forms an air mass from the discharge pipe due to the action of the reverse siphon. To discharge into the pumping cylinder. The air rises in the pumping cylinder, acting as a piston, pushing up the water in the pumping cylinder at a stretch, and the water and air launched from the top of the pumping cylinder hit the water surface and spread horizontally. On the other hand, water is sucked in again from the water intake, and the above operation is repeated intermittently, and the water in the dam reservoir is pumped.

When the water level in the dam reservoir fluctuates, the plurality of pumping cylinders expands and contracts, and the upper end of the uppermost pumping cylinder is always kept at a constant height below the water surface, so that the amount of water carried (up) by the air mass is constant. In addition, a vertical force acts on the pumping cylinder due to the reaction force due to the intermittent launch of the air mass, but the vertical movement is absorbed by the water damper, and vertical vibration of the uppermost pumping cylinder is prevented, and stable operation is performed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In the drawings, (1) is an upper pumping cylinder, (2) is a lower pumping cylinder, the upper pumping cylinder (1) has a large diameter, and a lower pumping cylinder (2) is inserted from below to be extendable and contractible. A donut-shaped float (3) is connected to the upper end of the upper pumping cylinder (1) by a tie rod (4) so as to be adjustable in height, and the upper end opening (1A) of the upper pumping pipe (1) is connected to the water surface (W).
L) It is adapted to be held in a reservoir (5) having a constant lower height (H).

A dashpot-shaped water damper (6) is fixed to the outer periphery of the upper end of the upper water pumping cylinder (1) so as to prevent vertical vibration of the water pumping cylinder (1) accompanying the launch of an air mass. It has become. Further, a ring-shaped weight (7) is fixed to the lower end of the upper water pumping cylinder (1), and holds the cylinder (1) vertically and stably.

The lower pumping cylinder (2) is flanged at an intermediate portion, an auxiliary float (8) is provided below the lower pumping cylinder (2), and a float (9) is provided on the outer periphery of the upper end of the cylinder (2). The outer periphery of the float (9) slides by using the inner surface of the pumping cylinder (1) as a guide, and the lower pumping cylinder (2) maintains a vertical position at a predetermined position in the water by the floats (8) and (9). It is supposed to.

At the lower end of the lower pumping cylinder (2), a large-diameter bottom water suction cylinder (10) is fixedly attached.
Double inner and outer cylinders (12) and (13) concentrically forming an air chamber (11) in the inner cylinder (1).
An air discharge pipe (14) is concentrically fixed inside 3), and a water suction port (15) is formed between the lower end opening of the suction cylinder (10) and the outer cylinder (12). (12)
Block installed at the bottom of the reservoir (5A)
6) is moored by a rope (17) or the like, and the lower pumping cylinder (2) is held at a predetermined position on the pond bottom (5A).

An air supply hose (1) is connected to the outer cylinder (12).
8) are connected in a penetrating manner, and as shown in FIG.
9) Air compressor (20) installed in the air chamber (11)
The inside is supplied with compressed air.

In the above embodiment, when the water level of the dam reservoir (5) is at the lowest level (LWL), the upper pumping cylinder (1) is located at the position indicated by the solid line in FIG. (H), when the water level is the highest (HWL), the upper pumping cylinder (1) is located at the position indicated by the two-dot chain in FIG. 2, and the height (H) from the water surface does not change. And the height (H) becomes constant, and stable pumping can be performed continuously.

Since the pumping cylinders (1) and (2) are extendable and contractible, the air mass (21) intermittently opens at the upper end opening (1).
A vertical force of the pumping cylinder (1) is generated by the reaction force generated every time the water is lifted from A), but it is absorbed by the water damper (6) and the upper end of the pumping cylinder (1) is kept at a constant height (H) below the water surface. Is maintained, and the pumping cylinder (1) is also stabilized.

In addition to the pumping cylinders (1) and (2), the floats (3), (8) and (9) and each cylinder (1)
0), (12), (13), the discharge pipe (14), and the damper (6) can be formed of a synthetic resin such as vinyl chloride. In addition, the present invention is not limited to the above embodiment, and the number of pumping cylinders can be increased or the design can be changed as appropriate.

[0016]

[Effect of the invention The present invention, as described above, since a plurality of pumping cylinders is the vertical telescopically continuously provided ash, the top pumping cylinder upper end regardless of any changes in the water level of the water surface under constant height to hold on, moreover, since it is equipped with a window Otadanpa,
The attitude can be stabilized by absorbing the vertical vibration of the pumping cylinder , and stable and efficient pumping is possible.

[Brief description of the drawings]

FIG. 1 is a front view of a central longitudinal section showing an embodiment of the present invention.

FIG. 2 is a front view for explaining the operation of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper-stage pumping cylinder 2 Lower-stage pumping cylinder 3 Float 5 Reservoir 6 Water damper 8 Auxiliary float 9 Float 11 Air chamber 14 Air discharge pipe 15 Water intake

Claims (1)

(57) [Scope of request for utility model registration] Claims: 1. A plurality of pumping cylinders are vertically connected and extendable,
Each pumping cylinder is provided with a float, an air chamber and an air discharge pipe are provided at the lower end of the lowermost pumping cylinder, and a water inlet is provided,
Mooring the bottom pumping cylinder at the bottom of the pond, the upper end of the top pumping cylinder is positioned below the water surface, and the upper outer periphery of the top pumping cylinder is protected from vertical vibration.
An air pumping device provided with a stopping water damper .