JPH08224570A - Intake apparatus - Google Patents

Abstract

PURPOSE: To efficiently take in surface layer water high in the concn. of dissolved oxygen without receiving the effect of the suction of air or B change of a water level by inserting the intake port of an intake pipe in the opening for the intake pipe of a structural float and sinking the lower part of the intake pipe in water to float the structural float in water and moving the float up and down along with the up-and-down movement of a water level. CONSTITUTION: The intake port 4 of an intake pipe 3 fixed to a fixing part 10 by a support part 11 is inserted in the opening part 5 of the intake pipe 3 a structure 1 having buoyancy and a plurality of opening parts 2 are provided to the side wall of the structure 1 at arbitrary positions. The structure 1 is floated to a water surface 13 by buoyancy and water enters the structure 1 from the opening parts 2. The structure 1 is moved up and down along the surface of the intake pipe 3 along with the up-and-down movement of the water surface 13. By this constitution, the structure 1 is moved up and down along with the up-and-down movement of the water surface 13 and the distance between the water surface 13 and the opening part 2 is kept constant to take in water from definite water depth.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifying device used for purifying water in waters such as oceans, freshwater lakes and rivers, and a water intake device which can be used in various fields such as fountains, waterworks. .

[0002]

2. Description of the Related Art A conventional fixed type water intake device is shown in FIG. In the figure, 3 is an intake pipe having an intake 4 for sucking surface water, which is fixed to a fixed part 10 by a support part 11 for installation on land. The intake port 4 of the intake pipe 3 is arranged below the water surface relatively close to the water surface for water intake, and is installed so as to be below the water surface 12 when ascending and when descending. However, it can absorb water with a pump.

[0003]

The main cause of deterioration of water quality in a body of water is that natural mixing of surface water and low-layer water in the body of water is difficult. That is, when natural mixing of surface water and low-layer water is difficult, dissolved oxygen in the low-layer water is almost eliminated, so that anaerobic microorganisms decompose organic matter to generate hydrogen sulfide, which is a source of odor, and methane gas. Water quality will deteriorate. Therefore, we artificially mix surface water and low-layer water to increase the dissolved oxygen concentration at the bottom of the water,
It is necessary to prevent the activation of anaerobic microorganisms.

By the way, since dissolved oxygen has a higher concentration as it approaches the surface water surface, in such artificial mixing,
Ideally, the surface water used to improve water quality should be drawn to the surface of the water or a layer near the surface and circulated to the bottom. However, since the water surface repeatedly moves up and down due to tidal waves and waves, the relative water depth of the intake 4 is constantly changing. Therefore, it was not possible to take in surface water of a certain depth. In addition, since the relative water depth changes, the dissolved oxygen concentration also changes, and especially in the intake of water on the coast, there is a large difference in the tidal tide, so the position of the intake must be set according to the lowest water depth, The difference in dissolved oxygen concentration was also severe.

On the other hand, since it is preferable to take water in a layer having a high dissolved oxygen concentration, it is considered to raise the position of the water intake so as to suck up water in a layer near the water surface as much as possible, but in this case, there is a problem of air suction. Occurs. When the air is sucked in, the function of the pump is suddenly deteriorated, and the pump is damaged. Therefore, the depth of the intake port 4 is preferably deep in view of the influence of air suction into the pump and the vertical movement of the water level. On the other hand, if the surface water having a high dissolved oxygen concentration is to be taken in, the surface layer should be made as deep as possible. There was the conflicting problem of being favorable.

The present invention solves the above-mentioned problems in the prior art, and provides a water intake device that can efficiently take in surface water having a high dissolved oxygen concentration without affecting the intake of air and changes in the water level. The purpose is to

[0007]

Therefore, the present invention has a structure in which a structural floating body having buoyancy is provided at the intake port of the intake pipe, and water is taken in through an opening formed in the submerged side surface of the structural floating body.

That is, the present invention has an intake pipe arranged so that the intake port is sufficiently submerged from the intake surface, and an intake pipe opening for inserting the intake port of the intake pipe. It is composed of a structural floating body that can move up and down along the intake pipe inserted into the pipe opening, and the structural floating body is provided with an opening for water intake opened at a position near the water surface of the submerged side surface. A water intake device is provided.

[0009]

According to the present invention, by such means, the structure floating body is inserted into the intake pipe opening and the water intake port of the water intake pipe is inserted, and the lower part is submerged and floats in the water. The movable structure floating body that moves up and down along the intake pipe and has buoyancy is held in a state of floating at a fixed position with respect to the water surface, regardless of the vertical movement of the water surface. Therefore, the position of the opening formed in the submerged side surface is also maintained at a constant position with respect to the water surface, and water intake is always performed from the water surface at a constant water depth. Therefore, it is possible to prevent the intake of air from the intake port and stabilize the performance of the pump.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view of a water intake device according to an embodiment of the present invention. In the figure, 3 is a water intake pipe having a water intake 4 at the lower end, which is fixed to a fixed portion 10 by a support portion 11. Reference numeral 1 denotes a structure having buoyancy, which has an intake pipe opening 5 provided so that the intake pipe 3 is inserted in the central portion thereof and is vertically movable along the surface of the intake pipe 3, and further, an arbitrary side surface. This is a structure having a plurality of openings 2 opened at positions.

Since such a structure 1 has buoyancy, water enters the inside from the opening 2 and floats between the water surface 13 and the water bottom 14, and when the water surface 11 shakes and moves up and down, this vertical movement occurs. Accordingly, it moves up and down along the surface of the water intake pipe 3. The structure 1 floats on the water surface 13 with a constant buoyancy and moves up and down the water surface to move in the intake pipe opening 5, but the opening 2 is always kept at a constant water depth from the water surface 13. Therefore, since water is taken in by the pump through the plurality of openings 2 and is performed, water can be taken from a certain depth regardless of the vertical movement of the water surface 11.

Here, the position of the opening 2 of the structure 1 is preferably opened so as to be located in the surface water portion where the dissolved oxygen concentration is high in consideration of the position where the structure 1 floats due to buoyancy. On the other hand, the water intake port 4 is set so that the water level at the lowest level is a water depth at which the phenomenon of air suction does not occur from the relationship between the suction amount of the pump and the submersion depth of the water intake port, and the water intake pipe 3 is fixed.

As described above, the structure 1 inserts the intake pipe 3 into the intake pipe opening 5 and moves up and down along the intake pipe 3 following the fluctuation of the water surface. It is preferable to provide a sliding means such as a guide rail to the outside so that the water intake pipe 3 can be prevented from being damaged or damaged during rough weather. Even when water of a certain depth is taken from the water surface for another purpose, the opening 2 of the structure 1
The present invention can be applied only by appropriately adjusting the position of.

According to the above-described embodiment, even if the water surface 13 moves up and down, the structure 1 moves up and down along the water intake pipe 3 at the water intake pipe opening 5, and the opening 5 has a constant depth from the water surface 13. As a result, water of a constant depth can be taken in at all times, suction of air from the water intake 4 can be prevented, and the pump can be operated safely.

[0015]

As described above in detail, according to the present invention, a structural floating body having a buoyant force is provided at the intake port of the intake pipe, and water is taken in through an opening formed in the submerged side surface of the structural floating body. Since it has a structure that makes it possible to constantly take water with a certain depth from the water surface regardless of changes due to vertical movement of the water surface, prevent air intake from the intake port, and stabilize the performance of pumps etc. .

[Brief description of drawings]

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

FIG. 2 is a side view of a conventional water intake device.

[Explanation of symbols]

 1 Structure 2 Opening 3 Intake pipe 4 Intake port 5 Intake pipe opening 13 Water surface

Claims (1)

[Claims] 1. An intake pipe arranged so that the intake port is sufficiently submerged from the intake surface, and an intake pipe opening for inserting the intake port of the intake pipe, and the insertion pipe is inserted into the intake pipe opening. Consisting of a structural floating body that can move up and down along the intake pipe
A water intake device characterized in that the floating body is provided with an opening for water intake opened at a position near the surface of the submerged side surface.