JPH10263581A - Air diffuser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air diffuser by which the defects of an existing air diffuser are swept away, bubbles generated in a sewage tank are micronized to increase oxygen efficiency and clogging is not caused in a diffuser cylinder. SOLUTION: An air feed pie 8 is installed in a porous cylinder 1 consisting of an appropriate size, a head part 11 forming a spatial part 10 is provided at an outlet part 9 of the air feed pipe, a float 14 having a diameter larger than that of the outlet part is housed in the spatial part of the head part and a closing part 13 is provided at a part of the outlet part of the head part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diffuser for sewage treatment.

[0002]

2. Description of the Related Art A conventional diffuser is disclosed in Japanese Utility Model Registration No. 20955, which was invented by the inventor of the present invention.
As seen in No. 36 (Jitsuho 7-11837),
Although the air opening is relatively coarse, no clogging occurs,
There is a drawback that the generated bubbles are too coarse. Also, only a porous diffuser made of PP or ceramics has fine bubbles and good oxygen efficiency, but has a drawback that clogging easily occurs.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an air diffuser which eliminates the above two drawbacks, thereby minimizing bubbles generated without clogging. And

[0004]

According to the present invention, an air supply pipe is provided inside a porous cylinder having an appropriate size, and a head having a space formed at an outlet of the air supply pipe is provided. A float having a diameter larger than the diameter of the outlet is accommodated in the space of the head, and a closing part is provided at a part of the outlet of the head.

[0005]

DETAILED DESCRIPTION OF THE INVENTION Now, outside air introduced from an air supply pipe enters an air supply pipe, and is continuously sent to the sewage tank as fine bubbles from the outlet of the head through the wall surface of the surrounding porous cylindrical body as it is. Then, it will be gradually purified.

Further, even if sewage infiltrates into the porous cylindrical body when the operation of the blower is stopped and tries to flow back into the air supply pipe, the float acts as a check valve, so that the outlet of the air supply pipe is sealed and the waste water is contaminated. Does not enter the backflow.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 denotes a porous cylindrical body made of a PP sintered resin material, and a cover plate 2 is covered on the upper surface of the porous cylindrical body.

Reference numeral 3 denotes a mounting rod whose top is screwed 4 to the cover plate 2. Both right and left ends of the mounting rod are fixed to the upper surface of the bottom plate 5.

Reference numeral 6 denotes a screw tube provided in a through hole 7 provided at the center of the bottom plate 5, and this screw tube forms a spiral on both inner and outer surfaces.

Reference numeral 8 denotes an air supply pipe having an arbitrary shape, and a head 11 having a space 10 having a large diameter is formed outside the outlet 9 of the air supply pipe.

Reference numeral 12 denotes an outlet of the head 11, and a closing portion 13 is provided at the center of the outlet.
4 are accommodated. The diameter of the float 14 is larger than the diameter of the outlet 9 of the air supply pipe 8, and acts as a check valve.

Reference numeral 15 denotes an air supply pipe which is screwed into the screw pipe 6 and communicates with the outside.

[0013]

According to the device of the present invention installed in a sewage tank,
Since the outside air can be sufficiently introduced and sent, and the bubbles to be sent are in a sufficiently fine state, the oxygen efficiency becomes extremely good, and the purification treatment of sewage can be improved.

Moreover, the porous cylindrical body is unlikely to be clogged even when used for a long period of time, and can maintain a state of always exhibiting a good processing ability.

[Brief description of the drawings]

FIG. 1 is an overall front sectional view

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is a perspective view of a main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Porous cylindrical body 2 Cover plate 5 Bottom plate 8 Air supply pipe 9 Outlet part 10 Space part 11 Head 12 Outlet 13 Closing part 14 Float

Claims (1)

[Claims] An air supply pipe is provided inside a porous cylinder having an appropriate size, and a head having a space is provided at an outlet of the air supply pipe, and a diameter of the head is formed in the space of the head. An air diffuser comprising: a floating member having a diameter larger than the diameter of the outlet portion; and a closing portion provided at a part of the outlet of the head.