Gas and liquid contact apparatus – Contact devices – Liquid tank
Reexamination Certificate
2000-06-01
2001-09-25
Bushey, C. Scott (Department: 1724)
Gas and liquid contact apparatus
Contact devices
Liquid tank
C261S124000, C210S221100
Reexamination Certificate
active
06293529
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a bubble generating apparatus, and more particularly to such a bubble generating apparatus, which is practical to produce tiny bubbles.
A variety of bubble generators have been disclosed for use in water treatment devices. These bubble generators commonly comprise a water container having a waste water inlet and a waste water outlet, and a high-pressure air source controlled to supply high-pressure air into the water container, causing bubbles to be produced in waste water. The water treating performance of a water treatment device has a great concern with the size of the bubbles produced in the bubble generator. However, because conventional bubble generators cannot produce tiny bubbles to effectively float dirt to the surface of the liquid in the respective water treatment device.
SUMMARY OF THE INVENTION
The present invention has been accomplished under the circumstance in view. It is one object of the present invention to provide a bubble generating apparatus, which is practical to produce tiny bubbles. It is another object of the present invention to provide a bubble generating apparatus, which is suitable for use in fish farming to generate tiny bubbles in water. According to the present invention, the bubble generating apparatus comprises a hollow shell having a plurality of bottom inlets through and a side outlet, a screw rod longitudinally mounted in the shell, a baffle threaded onto one end of the screw rod and suspended inside the shell above the bottom inlets, the baffle having a plurality of smoothly arched bottom notches for baffling intake flows of high pressure liquid to produce bubbles, and a knob fastened to one end of the screw rod outside the shell and rotated to move the baffle along the screw rod relative to the bottom inlets.
REFERENCES:
patent: 45206 (1864-11-01), McAvoy
patent: 3446488 (1969-05-01), Mail et al.
patent: 3542675 (1970-11-01), Mail et al.
patent: 4338192 (1982-07-01), Krasnoff et al.
patent: 5783118 (1998-07-01), Kolaini
patent: 6017449 (2000-01-01), Eriksson et al.
Chang Tsun Shin
Chuang Shih Ching
Bacon & Thomas PLLC
Bushey C. Scott
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