KR100650113B1 - Micro bubble producing device - Google Patents

Abstract

The present invention relates to a method and apparatus for generating microbubbles, and more particularly, microbubbles press-fitted and discharged from the lower part of the floating separation tank to the upper side in order to provide the floating force for the suspended matter contained in the flocculated water supplied to the floating separation tank. The present invention relates to a method and apparatus for generating microbubbles, which is capable of rapidly producing a large amount of microparticles in a form of ultra-fine particles, and for a flow introduced into a body through a pump, The elastic force is applied to allow the high speed and repetitive opening and closing of the flow flowing between these pressures, and to generate a large amount of micro bubbles by the cavitation turbulence caused by the contact of the flow with the cavitation groove formed in the body. Floating speed and floating force for the suspended solids in the water And it leads to an increase in the amount of dissolved oxygen, it has the effect of delaying the microbubble remaining time inside the floating separation tank.

Upper and lower housing, spring, valve seat, bubble passage, bubble discharge port, shaft

Description

Micro bubble producing device

1 is a front view showing a pump unit to which the apparatus of the present invention is applied.

Figure 2 is an exploded perspective view showing the device of the present invention.

3 is a cross-sectional view showing the assembled state of FIG.

Figure 4 is a cross-sectional view showing an operating state of the device of the present invention.

* Explanation of symbols for main parts of the drawings

1: appliance

2: upper housing

  20: upper flange 21: through hole

  22: bubble discharge port 23: inner helix

3: lower housing

  30: lower flange 31: inlet hole

  32: spiral part 33: cavitation groove

  34: Bubble passage 35: Sealing groove

4: valve seat 4a: guide rod

5: shaft

  51: spring support 52: guide groove

  53: screw 54: operation knob

  55: uneven part

6: Spring 7: O-ring

8: taper 100: pump unit

The present invention relates to a micro-bubble generating device, and more specifically, to provide a flotation force for the floating material contained in the flocculation water supplied to the flotation separation tank, the ultra-fine particles of the microbubble press-injected and discharged from the bottom of the flotation separation tank to the upper side The present invention relates to a microbubble generating device capable of producing a large amount quickly in a form.

As is well known, the pressure flotation separator is a device that floats and separates the suspended matter in the waste water by buoyancy, and is usually composed of a flotation separation tank including a flocculation tank and a microbubble generating device, and is supplied from the flocculation tank to the flotation separation tank. By injecting and discharging the microbubble from the lower part of the floating separation tank to the upper side with respect to the flocculation water, the floating material in the water is floated to the surface while forming a floc, and the floated sludge can be recovered and removed by a skimmer in a separate storage tank. The sewage of sewage from wastewater is allowed to be treated.

On the other hand, the micro-bubbles press-injected and discharged into the floating separation tank is usually generated by simply injecting air using a direct impeller or an air diffuser, which is easily extinguished and large in size, which is inefficient to use for injury. There was an issue that was.

Accordingly, the present invention has been made to solve the conventional problems as described above, the purpose is to provide a floating force for the floating material contained in the flocculation water supplied to the flotation separation tank in the upper portion of the lower portion of the flotation separation tank By generating a large amount of micro bubbles indented and discharged in the form of ultra-fine particles quickly, it is possible to bring an increase in the floating speed and the floating force and the amount of dissolved oxygen for the suspended solids in the water, and the remaining micro bubbles inside the floating separation tank To delay the time.

In order to achieve the object of the present invention, the bubble discharge port is formed in a direction perpendicular to the other side with respect to the one inlet port, the cavitation groove is formed in the section of the inlet hole outside the central inlet section between the inlet port and the bubble discharge port, the inlet side An apparatus body connected to the pump unit; A shaft coaxial with the inlet and vertically installed on the device body, and having a spring support formed on the lower side thereof; A valve seat provided at an upper side of the inlet hole and the cavitation groove; It is provided between the valve seat and the spring support is elastically installed to spring the elastic support the valve seat in the closing direction of the inlet hole; there is provided a micro-bubble generating device comprising a.

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In addition, the device body is characterized in that it comprises a bubble passage of the upper opening to the outside of the cavitation groove.

In addition, the shaft is coupled to the device body is characterized in that it is configured to adjust the elastic force of the spring by the lifting and lowering by the rotation of the shaft.

In addition, the shaft is characterized in that it comprises a vertical irregularities along the periphery of the upper end.

In addition, the shaft is characterized in that it comprises an operation knob on the upper end.

In addition, the guide groove of the lower open type is formed in the center of the shaft, the valve seat is characterized in that the guide rod is formed in the central portion of the upper side configured to guide the guide rod along the guide groove.

In addition, the cavitation groove is characterized in that formed in a structure forming a semi-circular cross-section of the upper opening.

In addition, the device body is characterized in that it further comprises a taper on the inner surface of the inlet gradually narrower in diameter toward the inlet hole side.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the present invention according to the embodiment.

The present invention uses a spring to give a sudden change to the wastewater, i.e. the flow, which contains gases such as ozone, air, pure oxygen, etc. Cavitation turbulence appears in the vicinity by repetitive motion, and will be described in more detail through the apparatus of the present invention.

1 is a front view showing a pump unit to which the apparatus of the present invention is applied.

As shown therein, the present invention is connected to and installed at the outlet side of the pump unit 100 into which external air is injected together, and the connection is made by spirally coupling the device body 1 to the outlet side of the valve 110. However, it is not limited to the pump unit.

2 is an exploded perspective view showing the apparatus of the present invention, Figure 3 is a cross-sectional view showing the assembled state of FIG.

The device body (1) is made by the combination of the upper housing (2) and the lower housing (3) opened to the lower, the upper housing (2) is a bubble discharge port in a direction perpendicular to the upper housing (2) 22 is formed, the upper flange portion 20 is formed outside the lower end.

The lower housing 3 has a lower flange portion 30 facing the upper flange portion 20 of the upper housing 2 outside the upper end portion, and an inlet hole 31 is formed in the center portion thereof. An upper open cavitation groove 33 forming an annular shape on the outer side of the inlet hole 31 is formed in a substantially hemispherical cross-sectional structure.

In addition, the outer circumference of the cavitation groove 33 is an annular bubble passage 34 which is also open to the upper side is formed, each semicircular in the outer lower housing 3 and the upper housing 2 of the bubble passage 34 The sealing groove 35 is formed to be configured to be airtight between them by the combination of the O-ring (7).

In addition, a spiral portion 32 is formed on the lower outer side of the lower housing 3 to be coupled to the pump unit 100 in a spiral manner, and penetrates the upper housing 2 on an inner center line of the upper housing 2. The shaft 5 is installed vertically. For this purpose, a through hole 21 is formed in the upper center portion of the upper housing 2, and the shaft 5 is helically coupled to the through hole 21. The threaded portion 53 is formed on the outer side of the through hole 21 includes an inner spiral portion 23 corresponding to the threaded portion 53.

In addition, a vertical uneven portion 55 is formed along the periphery of the upper end portion so that the rotation operation of the shaft 5 can be more easily performed, and the operating knob 54 is coupled to the uneven portion 55. It was configured to ensure the simplicity of the operation.

In addition, the lower housing 3 includes a valve seat 4 covering the inlet hole 31 and the cavitation groove 33, and a spring support on the lower side of the upper shaft 5 of the valve seat 4. A shaft 51 is formed to guide the movement of the valve seat 4, which is formed with a spring 6 therebetween and elastically installed therebetween by the elastic force of the spring 6 and the pressure of the flow. The guide groove 52 is opened to the lower side in the form, the guide rod 4a is formed in the center of the upper side of the valve seat (4).

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On the other hand, the device body (1) may further include a taper (8) which is gradually narrower in diameter toward the inlet hole (31) side on the inner surface of the inlet, by the taper (8) device body (1) This leads to an increase in pressure and concentration on the flow into the interior of the chamber.

4 is a cross-sectional view showing an operating state of the apparatus of the present invention.

The present invention configured as described above, first, the pump unit 100 is introduced into the lower housing (3) constituting the device body (1), the pressure of this flowing flow appears irregularly.

In addition, the inlet hole 31 and the cavitation groove 33 of the lower housing 3 are kept in a closed state by the valve seat 4 elastically supported by the spring 6 in the closing direction of the inlet hole at all times. Will be.

In this state, when an irregular flow pressure acts on the valve seat 4, when the flow pressure is greater than the elastic force of the spring 6, the valve seat 4 is opened to the inlet 31 and the cavitation groove 33. If the flow pressure is less than the elastic force of the spring 6, the closing of the inlet hole 31 and the cavitation groove 33 is made again, such a repetitive opening and closing operation is made at a high speed.

In addition, the flow introduced into the upper housing 2 by the opening of the valve seat 4 causes vortex by contact with the cavitation groove 33, and the liquid in the region where the pressure around the pressure is lower than the saturated steam pressure A large amount of bubbles are generated by the cavitation turbulence phenomenon which vaporizes into a gas state, and the generated bubbles are discharged through the bubble discharge port 22 of the upper housing 2.

On the other hand, since the shaft 5 is helically coupled to the upper housing 2, it is possible to adjust the elastic force of the spring 6 in accordance with the amount of rotation of the shaft (5).

As described above, the present invention provides the floating force for the suspended solids contained in the flocculated water supplied to the flotation tank by the cavitation turbulence phenomenon using the high speed repetitive motion according to the pressure difference between the irregular flow pressure and the elastic force of the spring. Not only can the microbubbles be rapidly generated in a large amount in the form of ultra fine particles, but also the increase of the floating speed, the flotation force and the dissolved oxygen amount of the suspended solids in the water, and delay the remaining time of the microbubbles inside the floating separation tank. Will have the effect.

Claims (9)

delete A bubble discharge port 22 is formed in a direction perpendicular to the other side with respect to one inlet port, and a cavitation groove 33 is formed outside the central inlet hole 31 in a partition portion between the inlet port and the bubble discharge port, and the inlet side An instrument body 1 connected to the pump unit 100; A shaft 5 coaxial with the inlet and installed vertically to the device body 1 and having a spring support 51 formed on a lower side thereof; A valve seat 4 provided at an upper side of the inlet hole 31 and the cavitation groove 33; A microbubble generating, comprising: a spring 6 elastically installed between the valve seat 4 and the spring support 51 to elastically support the valve seat 4 in the closing direction of the inlet hole 31; Device. The method of claim 2, The device body (1) is a micro-bubble generating device, characterized in that it comprises a bubble passage 34 of the upper opening to the outside of the cavitation groove (33). The method of claim 2, The shaft (5) is a microbubble generating device characterized in that it is coupled to the device body (1) is configured to adjust the elastic force of the spring (6) by the lifting and lowering by the rotation of the shaft (5). The method of claim 4, wherein The shaft (5) microbubble generating device, characterized in that it comprises a vertical concave-convex portion (55) along the upper periphery. The method of claim 5, The shaft (5) microbubble generating device, characterized in that it comprises an operation knob (54) on the upper end. The method of claim 2, A guide groove 52 of a lower opening type is formed at the center of the shaft 5, and the valve seat 4 has a guide rod 4a formed at an upper center portion thereof, so that the guide rod 4a is formed in the guide groove ( 52. The microbubble generating device, characterized in that configured to be guided along. The method of claim 2, The cavitation groove 33 is a micro-bubble generating device, characterized in that formed in a structure forming a semi-circular cross-section of the upper opening. The method of claim 2, The device body (1) further comprises a taper (8) having a taper (8) whose diameter gradually decreases toward the inlet hole (31) on the inner surface of the inlet.

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