JPH0420558Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application This invention relates to an air supply device that is installed in an aeration tank of a sewage treatment device, a culture fish tank, etc., and supplies and mixes air into water.

Conventional technology Conventionally, devices for supplying air underwater have generally been of the air blowing type, which generates air bubbles by opening one end of a pressure air pipe into the water, and this type is easy to install. , and has the advantage of being able to freely adjust the amount of air, but has the disadvantage that it requires a separate air generating device such as an air pump or blower, making the entire device large.

In contrast to this air blowing type device, there is a mechanical stirring type device that forcibly generates air bubbles by rotating a stirring impeller in water, and is widely used in flotation machines. It is necessary to support the rotation mechanism by providing a solid base frame on the tank wall in advance.
In addition, the outside air introduction pipe for generating air bubbles is of a type in which the upper and lower ends of the structure are opened above the impeller and supported on the base frame, so it cannot be used in equipment with a wide water surface such as the aeration tank or fish pond, or the water surface. It is unsuitable for use in locations where the height of the device changes.

Problems to be solved by the invention This invention has a relatively simple, compact, and lightweight structure, and can be easily deployed whenever needed.
Furthermore, the purpose of this invention is to provide an air supply device that can efficiently supply air into a liquid.

Means to Solve the Problems The inventor of this invention has conducted intensive research to develop an air supply device that is easy to handle and efficient, and has developed a system that uses the rotation of stirring blades to suck air into the liquid. Based on this knowledge, we discovered that air can be easily supplied by releasing air into the water, and that if the entire device is attached to a float and floated above the water surface, it can perform its function regardless of whether it is above or below the water surface. So, I came up with this idea.

That is, in this invention, at the center of the upper surface of the disk 3,
A rotary impeller 1 is formed by having a cylinder 4 of a required length standing upright with its lower end opened on the lower surface of a disk, and a plurality of vanes 5 hanging radially from the periphery of the lower surface of the disk 3.
is suspended from the rotary shaft 12 of the vertical motor 9, which is separately installed on the float 10 with the rotary shaft 12 pointing downward, so that their centers are aligned with each other and the upper end of the cylinder 4 is located above the liquid level. The present invention provides an air supply device that is connected to the air supply device.

Example An example of this invention will be explained with reference to the drawings.
Reference numeral 1 denotes a rotary impeller, in which a cylinder 4 of a required length is erected on the upper surface of a disk 3 having a circular hole 2 in the center, with its lower end aligned with the edge of the circular hole 2; A plurality of wing plates 5 are arranged on the lower surface of 3 at positions that equally divide the periphery.
It is formed by vertically protruding... A spider 7 is provided at the lower end of the cylinder 4 and has a mounting hole 6 at its center, which coincides with the center of the circular hole 2. A vertical shaft 8 is erected with the lower end fixed to the mounting hole 6. ing.

Next, 9 is a vertical motor for rotating this rotary impeller 1, and is installed on a base plate 11 mounted on a circular float 10 with its rotating shaft 12 facing downward.

The rotary impeller 1 has its vertical shaft 8 connected to the rotary shaft 12 of the vertical motor 9 through a coupling 13, and is mounted in a hanging manner such that the upper end of the cylinder 4 is located directly below the base plate 11. Incidentally, for this attachment, a spider may be provided at the upper end of the cylinder 4 and connected directly to the rotating shaft 12.

Effects of Action When the device of this invention is floated on a desired liquid level with the above structure and the rotary impeller 1 is rotated at high speed via the vertical motor 9, a liquid flow that spreads outward via the vanes 5 is generated. The outside air is sucked in from the upper end of the cylinder 4 and mixed into the liquid flow, and the required air is mixed into the liquid.In this invention, in particular, a structure is adopted in which the entire device is held on the liquid surface via a float 10. Therefore, as described above, there is no need to particularly install a mounting base frame, etc., and it can be used at any location at any time. Further, the structure is such that the cylinder 4 for introducing outside air is made integral with the disk 3, and the entire amount of the introduced outside air is diffused through the lower surface of the disk 3 by the blades 5, so that it is highly efficient.

In this way, this device does not require a special blower pump, etc. unlike the air blowing type, and has a simple structure that requires no effort to install, resulting in low manufacturing and maintenance costs. There are advantages.

[Brief explanation of the drawing]

The drawing is a side sectional view of this invention. 1...Rotor wheel, 3...Disk, 4...Cylinder, 5
... wing plate, 7 ... spider, 8 ... vertical axis, 9 ...
... Vertical motor, 10 ... Float, 11 ... Base plate,
12...Rotation axis.

Claims (1)

[Scope of utility model registration request] A cylinder 4 of a required length is erected at the center of the upper surface of the disk 3 with its lower end opened on the lower surface of the disk, and
The rotating shaft of a vertical motor 9 has a rotary impeller 1 formed by radially extending a plurality of vanes 5 on the lower peripheral edge of the vertical motor 9, which is separately mounted on a float 10 and straddles the rotating shaft 12 with the rotating shaft 12 facing downward. 12, an air supply device which is connected in a hanging manner so that the centers of the cylinders 4 are aligned with each other and the upper ends of the cylinders 4 are located above the liquid level.