JPH052800U - Aeration device - Google Patents

Abstract

(57) [Abstract] [Purpose] The aeration device using a submersible pump has a great aeration effect, but agitates the treatment liquid. Further, in the aeration device that sends compressed air into the liquid, noise from the compressed air source poses a problem. INDUSTRIAL APPLICABILITY The present invention can be used in a pond or the like where the operation noise is low, the agitation flow is low, and there are sediments. [Configuration] The float 1 supports the whole. The motor 3 and the rotating body 16 are connected by a hollow rotating shaft 7. The rotating body 16 has a cage shape and a large number of pores are formed on the outer circumference. Due to the rotation of the rotating body 16, the air introduction pipe 5, the bracket 4, the rotating shaft 7, the rotating body 16 and the atmosphere are introduced, and the air is spirally emitted from the outer periphery of the rotating body 16 in the radial direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to an aeration device supported by a floating body above a liquid surface.

[0002]

[Prior art]

  As a conventional example, it is used by being immersed in the bottom of a tank or pond where the liquid to be treated is stored. Used by suspending aeration means in water supported by an air device and a floating body above the liquid level, or Some air is sent into the tank from a pressurized air source outside the tank. Aeration used by immersing in the bottom of the liquid tank As a device, an ejector and a diffuser are connected to the discharge port of the submersible pump. There is one that puts the inlet of the air introduction pipe to the above to the liquid level. Such submersible pumps The so-called Volt Couspums are often used. Air from the compressed air source placed outside the tank into the water What is sent in and sent in aeration is used as an aeration device at the bottom of the tank and below the liquid surface. A pump, ejector, and diffuser are also used for those suspended from a floating body. It is a thing.

[0003]

[Problems to be solved by the device]

  In the water at the bottom of the tank and the upper part of the tank, an ejector and a diffuser are connected to the submersible pump. The aeration device has the function of strongly stirring the liquid in the tank by the liquid flow of the submersible pump. Due to the strong agitation that accompanies the atmosphere, it seems that organic sludge has accumulated at the bottom of the pond. If it is used in a different place, the sludge will rise and the pond will become muddy, but aeration will occur. Not used for ornamental ponds. And because of the installation environment of the submersible pump, It may lock and stop, and watertight means (mechanical It is not easy to make at a low cost because the seals etc.) must be perfect. or , An aeration device that sends compressed air from outside the tank to the compressed air source placed outside the tank Air compressors and blowers are the noise sources. Also for small glass aquarium The diaphragm pump that can be used is often used in a small size, but the vibration noise is audible. Compressed air The aerator that sends air into the tank can send bubbles efficiently into the tank, but Since the air expands when it goes out into the liquid, air bubbles in the water are large and the aeration effect is reduced. Let

[0004]   The present invention has a good aeration effect because the operation noise is quiet and the sediment on the bottom of the tank does not rise. It is an object of the present invention to provide an aerator that is favorable and can be manufactured at low cost.

[0005]

[Means for Solving the Problems]

  The first aspect of the present invention is to connect a driving source supported by a floating body, and hang down and support a bearing. A rotary body having a rotating shaft supported below the rotating shaft, The body is cage-like with a peripheral wall with a large number of pores on the outer periphery and end plates that cover both ends of the peripheral wall in the axial direction. And a member for communicating the rotating body with the atmosphere on the liquid surface. It is an aeration device.

[0006]   According to a second aspect of the present invention, the member that connects the rotating body and the atmosphere above the liquid surface is a hollow cylinder. The lower part of the hollow cylinder communicates with the rotating body, and the upper part communicates with the atmosphere. The aeration device according to the first invention is characterized in that.

[0007]

【Example】

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a vertical sectional view. Liquid surface A floating body which floats above L, for example, a float 1, has a hollow cross section and an annular shape. A buoyant member such as a roll is provided. Mounting plate 2 is passed over float 1 and float 1 It is fixed to. A motor 3 with a flange is fixed on the mounting plate 2, and the motor 3 The motor shaft 3 a of the above projects below the mounting plate 2. Via the motor 3 and the mounting plate 2 The opposing brackets 4 have a hollow closed structure and are fixed to the mounting plate 2. bra The upper end of the air introduction pipe 5 whose lower end opens to the ket 4 has a muffler that is both soundproof and dripproof. It is open to the atmosphere through -6. The rotating shaft 7 perpendicular to the motor shaft 3a is concentric. And are connected by the shaft joint 8. A bearing tube 9 is fixed to the lower end of the bracket 4. Has been.

[0008]   FIG. 2 shows the upper and lower parts of the bearing sleeve 9. The rotating shaft 7 is reduced in diameter by the step portion 7a, The upper bearing 11 is fitted to the portion 7b so as to hit the stepped portion 7a and screwed into the reduced diameter portion 7b. The upper bearing 11 is fixed to the rotating shaft 7 by tightening the nut 12 . The upper bearing 11 is fitted into the expanded diameter portion 9a at the upper end of the bearing tube 9 and screwed into the expanded diameter portion 9a. It is fixed by a wrapped nut 13. With the configuration of FIG. 2, the rotary shaft 7 is a shaft. The bearing tube 9 is rotatably supported without moving in the direction. Fit into the lower end of the bearing tube 9 The lower bearing 14 is press-fitted and fixed to the rotating shaft 7, and the lower bearing 14 is press-fitted to the lower end of the bearing tube 9. The rotary seal 15 seals the rotary shaft 7.

[0009]   As shown in FIG. 3, a rotary body 16 is fixed to the lower end of the rotary shaft 7. The rotating body Reference numeral 16 is a cylindrical shape having a peripheral wall 16a made of a perforated plate, and has an upper end plate 16b and a lower end plate 16c. Equipped with. The center hole of the upper end plate 16b fits into the rotary shaft 7, and the central portion of the lower end plate 16c rotates. It is in contact with the lower end surface of the rolling shaft 7. The pin 17 is planted near the outer periphery of the lower end surface of the rotating shaft 7. Is fitted in the lower end plate 16c. Apply a washer 18 to the center of the bottom plate 16c 8, the bolt 19 is screwed into the rotating shaft 7 through the lower end plate 16c. Rotating body 16 has a diameter of 70 mm to 150 mm, and has a large number of peripheral walls 16a. The pores of the perforated plate have a diameter of 3-5 mm.

[0010]   As shown in FIG. 1, a disc is provided on the lower surface of the rotor protection frame 21 attached to the lower end of the bearing tube 9. The bottom stirring prevention plate 22 is fixed. The protective frame 21 is provided in a position where the periphery is evenly arranged. The upper and lower end plates 21b and 21c are connected by a columnar member 21a.

[0011]   An air introduction passage 23 communicates with the center of the hollow rotating shaft 7, and the passage 23 has an upper end. Part is communicated with the inside of the bracket 4 by a radial hole 23a, and the lower end part has a radial direction. The hole 23b communicates with the inside of the rotating body 16.

[0012]   Next, the operation will be described. When the motor 3 is energized, the motor shaft 3a rotates and the shaft coupling 8 The rotating shaft 7 rotates via the, and the rotating body 16 rotates. By the rotation of the rotating body 16, A negative pressure is applied to the central portion of the rotating body 16, and the muffler 6, the air introduction pipe 5, and the bracket 4 Portion, the radial hole 23a, the air introduction passage 23, the radial hole 23b, and Go out into the rolling body 16. Here, when the gas and liquid are mixed in the rotating body 16, the peripheral wall 16a is generated by centrifugal force. The intake air directed toward the air diffuses into the liquid through the pores of the perforated plate of the peripheral wall 16a. this The bubbles tend to expand toward the surroundings in the vertical direction due to the radial vortex, but the lower part is a stirring prevention plate. Since it is provided with 22, there are almost no bubbles going downward.

[0013]   Since such a rotating body is used, the liquid is not agitated and can be rotated gently and rotated. Since the drive source of the rolling element is also the motor, the operation sound is only the motor sound.

[0014]   In the embodiment, the passage for introducing air into the rotating body has a hollow rotation shaft, and the rotation shaft is air. Although it is a passage, a separate hose is used to introduce air into the rotating body and lead to the center of the rotating body. It is also possible to connect the hose and the rotary body with a rotary joint.

[0015]   In the embodiment, since the float 1 and the stirring prevention plate 22 have almost the same diameter, they are stirred in the posture shown in the figure. The agitation prevention plate 22 may be placed on the ground, or the rotary shaft 7 may be made horizontal to roll on the ground. It is also possible that it is portable and convenient to maintain in a fixed position.

[0016]

[Effect of device]

  (1) The present invention rotates a basket-shaped rotating body having a large number of pores on the outer periphery in water and rotates it. Since the center of the body and the atmosphere are communicated with each other, the liquid is less agitated by the rotating body, There is an effect that only air can be aerated. (2) The rotating body rotates gently, and the driving noise is It is only the sound of ta. (3) The rotating body is cage-shaped and has an impeller and a case like a pump. It is easy and inexpensive to manufacture because it does not require a ring, a special shaft seal, or a water seal. (4) It is easy to handle and portable because it is integrated with the floating body. (5) The rotating body is liquid. The pump action against it is small, and the pores of the rotating Since it is blown out, the air bubbles are small and the aeration effect is large.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention.

FIG. 2 is an enlarged detailed view of the bearing portion of FIG.

FIG. 3 is an enlarged detailed view of the rotating body portion of FIG.

[Explanation of symbols]

1 float 3 motor 5 Air introduction pipe 7 rotation axis 9 Bearing tube 22 Bottom stirring prevention plate 23 Air introduction passage

Claims (2)

[Scope of utility model registration request] 1. A rotating body which is connected to a drive source supported by a floating body and which is hung and supported by a bearing and which has a rotating body supported below the rotating shaft, wherein the rotating body has a large number of outer circumferences. An aerator, which is a cage having a peripheral wall having pores and end plates covering both sides of the peripheral wall in the axial direction, and which has a member for communicating the rotating body with the atmosphere on the liquid surface. 2. A member for communicating between the rotating body and the atmosphere on the liquid surface is a hollow cylinder, and a lower part of the hollow cylinder is a rotating shaft communicating with the rotating body and an upper part thereof is communicating with the atmosphere. The aeration apparatus according to claim 1.