JPS618121A - Air bubble generation apparatus - Google Patents

Abstract

PURPOSE:To normally maintain an air bubble generating function over a long period of time, by arranging a large number of air bubble generating apertures in an upper surface side and providing an air supply pipe for supplying air to an air chamber to an under surface side while further embedding a reinforcing plate in the upper surface side. CONSTITUTION:An air bubble generation apparatus E is constituted by forming an air chamber A in a main body 1 comprising a rubbery elastomer having an anti-staining property and arranging a large number of air bubble generating apertures 2 communicated with the air chamber A to the upper surface side 1a of said main body 1 while providing an air supply pipe 3 for supplying air to the air chamber A to the under surface side 1b thereof and further embedding reinforcing plates 4 in the upper surface side 1a. The reinforcing plates 4 embedded in the main body 1 of the apparatus E in order to impart pressure resistance and durability to said main body 1 are mounted from both sides of the under surface side 1b of the main body 1 to the upper surface side 1a and arranged in parallel so as to provide intervals therebetween in the longitudinal direction. Both end parts of each reinforcing plate 4 are bent to the inside.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to improvements in bubble generators.

[Conventional technology]

BACKGROUND OF THE INVENTION Conventionally, bubble generating devices used for oxygen supply to fish preserves, inspection of bonito fishing boats, water purification, etc. generate bubbles by forcing air through a metal pipe with a large number of pores.

Therefore, when this product is used under the sea, it has the disadvantage that the pores are blocked by the attachment of aquatic organisms such as shellfish and algae or rust over a single period of time, and the bubble generation function is lost. there were. Therefore, in order to maintain the bubble generation function normally, it is currently necessary to use a dipper to periodically dive and clean the numerous pores.

[Purpose of the invention]

The present invention was developed as a result of studies to solve the above-mentioned problems.

Therefore, an object of the present invention is to provide a bubble generating device that can maintain the bubble generating function normally over a long period of time and has a simple structure.

[Structure of the invention]

That is, in the present invention, an air chamber is formed inside a main body made of a rubber-like elastic body having antifouling properties, and a plurality of air bubble generating holes communicating with the air chamber are arranged on the upper surface side, and the above-mentioned air chambers are arranged on the lower surface side. The gist of the present invention is a special foam generating device characterized in that an air supply pipe for delivering air to an air chamber is provided, and a reinforcing plate is further embedded in the upper surface side.

〔Example〕

Hereinafter, the present invention will be specifically described by way of examples with reference to the drawings.

1 to 4 show a bubble generator according to an embodiment of the present invention, FIG. 1 is an explanatory plan view with a part cut away, and FIG. 2 is an explanatory cross-sectional view taken along arrows 1-- , FIG. 3 is a perspective explanatory view showing an example of the reinforcing plate embedded in the longitudinal end of the present bubble generator and its locking means, and FIG. 4 is an example of the longitudinal end structure of the present bubble generator. FIG.

In the figure, E denotes a bubble generator according to an embodiment of the present invention, in which an air chamber A is formed inside a main body 1 made of a rubber-like elastic body having antifouling properties, and an air chamber A is communicated with the air chamber A on the upper surface side 1a. In addition to arranging a plurality of bubble generating holes 2, the lower surface side 1b
an air supply pipe 3 for delivering air to the air chamber A,
Further, a reinforcing plate 4 is embedded in the upper surface side 1a.

To further explain this structure, the main body 1 of the bubble generator E is molded from a rubber-like elastic material having antifouling properties such as chloroprene rubber containing a chemical such as organic tin that prevents the adhesion of shellfish and algae. In this embodiment, the shape in plan view is a rectangle with a smooth surface and an appropriate curvature at both ends IC in the longitudinal direction, as shown in FIGS. 1 and 4. The cross-sectional shape is arched as shown in FIG.

Furthermore, in this embodiment, the longitudinal direction both ends 1c are
As shown in FIG. 4, it has a smooth slope extending from the bottom side 1b to the top of the top side 1a, and when this bubble generator E is attached to the hull of a ship, for example, the surface is smoothed and the cross-sectional shape is changed as described above. Together with the arched shape, it is possible to reduce resistance.

Note that the shape of the main body 1 described above may be circular, rectangular, or
Of course, it may be formed into an appropriate shape such as an ellipse, and the cross-sectional shape and end shape may also be formed into an appropriate shape.

In this embodiment, the reinforcing plate 4, which is embedded inside the main body 1 in order to provide pressure resistance and durability to the main body 1, is formed by forming a thin metal plate into an arch shape in cross section. As shown in FIGS. 1 and 2, they are mounted from both sides of the lower surface side 1b of the main body 1 to the upper surface side 1a, and are arranged in parallel at intervals in the longitudinal direction.

In this embodiment, both ends of each reinforcing plate 4 are bent inward, as shown in FIG. It is locked in a locking hole 5a of a locking plate 5 buried corresponding to the locking plate 5.

Further, each reinforcing plate 41 embedded in both longitudinal ends 1c of the main body 1 is formed into a shape corresponding to the shape of the upper surface side 1a at both ends 1c, as shown in FIG.
Both ends of this reinforcing plate 41 are also bent inward in the same manner as each of the reinforcing plates 4 described above, and the bent portions 4a are buried around the lower surface side 1b of the main body 1 in correspondence with the reinforcing plates 41. It is locked in the locking hole 5a of the locking plate 51.

In this embodiment, as described above, each reinforcing plate 4 and 4
．． Both ends of the body are bent inward to form a bent portion 4a, and locking plates 5 and 51 are buried around the lower surface side 1b of the main body 1 in correspondence with the respective reinforcing plates 4 and 41, and Since the bent portions 4a of the reinforcing plates 4 and 41 are inserted and locked into the locking holes 5a formed in the stop plates 5 and 51, when the present bubble generator E is used, Even if high air pressure acts in the air chamber A of the main body 1, the mold part of the main body 1 can be prevented from deforming, and the concentrated stress applied to the bent part can be dispersed by the locking plates 5 and 51. This prevents the mold from peeling off, and there is no risk of the mold part coming apart due to water pressure or impact during ship navigation.

Furthermore, when forming the bubble generating holes 2 in the reinforcing plates 4 and 41 described above, it is preferable to form the holes 2a with a diameter larger than a predetermined diameter.

This is because when molding the main body 1 of the bubble generating device E, when the rubber-like elastic body is flowed into the hole 2a and the bubble generating hole 2 is bored, the reinforcing plates 4 and 41 are directly attached to the bubble generating hole. The reinforcing plate 4 prevents exposure to the inside of the 2, and prevents the adhesion of marine organisms and even after long-term use in severe corrosive environments such as seawater.
This is because corrosion of the parts 41 and 41 can be reliably prevented.

In addition, in this embodiment, the air supply pipe 3 provided on the lower surface side 1b of the main body 1 to feed air into the air chamber A of the present bubble generator E is connected to the upper part of the air supply pipe 3, as shown in FIG. The flange portion 3a is embedded in the lower surface side Ib of the main body 1 and is integrally fixed and attached.

° The adhesive to be used when attaching this bubble generator E to the object G to which it is attached, such as the hull of a ship, is an adhesive that has good adhesion between steel plates and rubber, such as chloroprene rubber, and has good seawater resistance. It is preferable to use

〔Effect of the invention〕

Since the present invention is configured as described above, it has the following effects. In other words, (al) Since the main body of the bubble generator is made of a rubber-like elastic material that has antifouling properties, there is no risk of aquatic organisms such as shellfish or algae adhering to it, or rust forming and blocking the bubble generation holes. Therefore, the bubble generation function can be maintained normally for a long period of time, and there is no need to periodically dip the dipper and clean a large number of bubble generation holes as in the conventional device.

(b) Since the bubble generating plate is embedded in the reinforcing plate on the upper surface side of the main body, the bubble generating plate can be endowed with pressure resistance and durability, and can be used for a long period of time.

Furthermore, since this bubble generator has an integrated structure with an air chamber formed inside the main body, it can be installed extremely easily on the hull of a ship, etc., while maintaining airtightness, greatly increasing the bubble generation efficiency. can be improved.

[Brief explanation of the drawing]

1 to 4 show a bubble generator according to an embodiment of the present invention, FIG. 1 is an explanatory plan view with a part cut away, and FIG. 2 is an explanatory cross-sectional view taken along the line nn in FIG. 1. , FIG. 3 is a perspective explanatory view showing an example of the reinforcing plate embedded in the longitudinal end of the present bubble generator and its locking means, and FIG. 4 is an example of the longitudinal end structure of the present bubble generator. FIG. DESCRIPTION OF SYMBOLS 1... Main body, 1a... Upper surface side of main body, ■b... Lower surface side of main body, 2... Air bubble generation hole, 3... Air supply pipe, 4... Reinforcement plate, A. ...Air chamber.

Claims (1)

[Claims] An air chamber is formed inside the main body made of a rubber-like elastic material having antifouling properties, and a plurality of air bubble generating holes communicating with this air chamber are arranged on the upper surface side, and air is introduced into the air chamber on the lower surface side. A bubble generating device characterized in that an air supply pipe is provided and a reinforcing plate is embedded in the upper surface side.