JP4514615B2 - Air diffuser - Google Patents

Description

  The present invention relates to an air diffuser in a sewage treatment tank.

  For many years, the present inventor has studied a diffuser for sewage treatment installed in a sewage treatment tank and has implemented the following new technology.

Japanese Utility Model Publication No. 56-33680 Japanese Utility Model Publication No.7-11837 Japanese Patent No. 3000265

  However, the conventional air diffuser has the disadvantage that clogging is likely to occur even if the bubbles are fine and the oxygen efficiency is good, and the diffuser type does not cause clogging, but the bubble is too coarse and the oxygen efficiency is reduced. there were.

  Accordingly, the present invention provides an epoch-making air diffuser that eliminates the above-mentioned drawbacks seen in the prior art and that exhibits a double effect of fine bubbles and high oxygen efficiency without causing clogging. It is for the purpose.

In the present invention, the bottom of the diffused gas made of a microporous material and having a dome shape is grounded to a packing provided around the upper surface of the base, and the packing is forced to the center of a thin wall provided at an appropriate interval. the longitudinal cut which forms the door section opening for providing a check valve provided with a pore feed to the air tube leading to the blower in the center of the diffuser gas provided, the variance of the upper portion of the feeding post made in the trachea and integrally It is attached so that it can be attached to and detached from the gas .

In the sewage treatment tank, the fine bubbles generated from the diffused gas in the form of a microporous and domed shape, and the coarse bubbles generated by the opening of the left and right doors caused by forced air blowing from the longitudinal cuts of the packing part, are generated inside the sewage treatment tank. Can provide an extremely good effect of smoothly supplying oxygen and not causing clogging, thereby solving the conventional technical problem.

In this device installed in the sewage treatment tank, the air blown from the blower pushes up the ball inside the air supply pipe and flows out from the blow hole on the peripheral wall into the diffused gas made of fine porous material in the dome shape. . The air passes through the diffused gas , but at that time, it becomes fine bubbles of about 1 mm and diffuses into the tank.

Such an action is continuously performed. However, when the action is continued for a long time, a clogging phenomenon gradually occurs in the diffused gas . In the aeration action, this clogging phenomenon starts from the upper part of the diffused gas , and the aerated action gradually moves to the lower part of the diffused gas .

If so aeration action is performed at the lower portion of the dispersion gas, it until both door portion with a longitudinal cut which is provided at equal intervals in the packing or the like in contact with a was dispersed gas closed state, blower It is forced to open outward and to the left and right by the air blown from, and diffuses into the sewage tank.

Although the air emanating from the longitudinal cut parts of the packing is a coarse rather than fine, longitudinal cut portion because there is no interruption in the air diffuser from the upper part of the dispersion gas, and fine bubbles from diffusing gas packing Coarse bubbles from are mixed. As a result, the best aeration action is performed inside the sewage treatment tank by the fine bubbles having high oxygen efficiency and the coarse bubbles that stir the fine bubbles.

  In the unlikely event that the blower stops, the check valve that has floated inside the blower pipe falls and closes the opening, so that the backflow of sewage is prevented.

Also, in the diffused gas , when the bubble rises, a force that pulls the sewage around the lower part in a negative state acts, so there is a possibility that the sewage may be sucked from the vertical cut of the packing, but the vertical cut on the packing is a thin plate shape Therefore, even if it is forcibly opened by the blowing force from the inside, there is no risk of entering sewage from the outside.

If the entire diffused gas becomes clogged or damaged, remove the screw on the column that supports the diffused gas , replace it, or change the weight of the check valve. What is necessary is just to remove and replace a pipe | tube and an air supply pipe.

Reference numeral 1 denotes an air diffused gas having a dome shape which is made of an ultra-fine porous material made of a PP sintered resin material and has an appropriate thickness and height.

Reference numeral 2 denotes a base on which the bottom surface portion 1 ′ of the diffused gas 1 is grounded, and a connecting pipe 5 having a spiral portion 4 on the lower peripheral surface is fitted into a through hole 3 provided at the center of the base.

  Reference numeral 7 denotes an air supply tube having a spiral portion 8 that is screwed into a spiral portion 6 provided on the upper peripheral surface of the connecting tube 5. Air supply holes 9 and 9 are provided on both left and right sides of the air supply tube.

Reference numeral 10 denotes a support column that forms a space that communicates integrally with the air supply pipe 7, and this support column has an upper end attached to the top end of the diffused gas 1 through male and female screws 11, 12.

  Reference numeral 13 denotes a ball-shaped check valve disposed inside the air supply pipe 7 and has a relatively large specific gravity.

  Reference numeral 14 denotes a protruding wall formed at the peripheral edge of the base 2, and a circular packing 15 which is higher than the protruding wall is installed inside the protruding wall.

  16 is a recess provided in the flat portion of the packing 15 with a thin wall at the outer peripheral portion at equal intervals. A vertical cut 17 is provided in the center of the thin wall of the flat recess. The thin walls become door portions 18 and 18 that can be divided to the outside in the left-right direction during operation due to the cut.

The bottom surface portion 1 ′ of the diffused gas 1 is always in contact with the flat surface portion of the packing 15.

Perspective view of the entire diffuser Central section of the entire diffuser Plan view of the diffuser member disconnecting the dispersed gas Perspective view of packing part Packing part part action state diagram

1 Air diffuser 2 Base 5 Connecting pipe 7 Air supply pipes 9 and 9 Air supply holes 10 Struts 13 Check valves 15 Packing 16 .. Planar recess 17.

Claims (2)

The bottom of the dome-shaped diffused gas made of fine porous material is grounded to the packing provided around the upper surface of the base, and this packing is forcibly opened at the center of the thin wall provided at an appropriate interval. A vertical cut line is formed, an air supply hole is provided in the air supply pipe that communicates with the blower at the center of the diffused gas, a check valve is provided, and an upper end portion of a column integrally formed with the air supply pipe is attached to and detached from the diffused gas An air diffuser characterized by being attached to obtain. A sewage treatment tank comprising the aeration apparatus according to claim 1.

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