KR20190068798A - Foam revoving device for livestock wastewater liquid fertilizing equipments - Google Patents

Abstract

The present invention relates to a bubble removing device to remove bubbles on the water surface of a fermenter or a liquid fertilizer storage tank by underwater aeration in equipment for producing liquid fertilizer by fermenting livestock wastewater with microorganisms. The present invention is provided to effectively remove bubbles on the water surface of the fermenter or liquid fertilizer storage tank by underwater aeration in the equipment for producing liquid fertilizer by fermenting livestock wastewater with microorganisms. The present invention includes: a connection pipe (10) which is connected to a pipe returning water pumped with an underwater pump; a nozzle tip (20) which is combined to be able to be separated from an end of the connection pipe (10); a support (30) which is attached to the connection pipe (10) at an upper end; and a diffusion plate (40) which is attached to the lower end of the support (30) and diffuses water while rotating by colliding with water sprayed from the nozzle tip (20). The nozzle tip (20) has a plurality of spiral grooves (22) on the outer circumference so that pumped water is sprayed to have rotary force.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a foam removal apparatus for livestock wastewater,

The present invention enables effectively removing bubbles floating on the surface of a fermentation tank or a liquid storage tank by means of an aeration (anagen) for supplying oxygen to a microorganism in an apparatus for fermenting livestock wastewater (livestock manure) by microorganisms.

Generally, livestock wastewater is organic wastewater of high concentration and it contains a large amount of nutrients such as nitrogen and phosphorus. Therefore, when it is discharged into a river in an untreated state, it accelerates eutrophication of rivers and lakes and causes water pollution, .

In addition, since livestock wastewater contains high concentrations of refractory and odor-causing substances, it is difficult to obtain treated water suitable for discharged water quality standards by general biological treatment methods. Conventionally, most of them were dependent on marine dumping methods. However, as the London Convention (1972) became effective, since July 2012, marine dumping can not be done and it should be treated on the land itself. The most preferable treatment method is to use these livestock wastewater The resources for recycling these livestock wastewater have been proposed and developed in various ways.

On the other hand, the fermentation reaction of the livestock wastewater is activated due to the oxygen supply (aqua aeration) by the acid ore in the treatment baths of various wastewater treatment facilities including the livestock wastewater, especially in the fermentation tank, , These bubbles block the circulation of air on the surface of the water, which causes trouble in the wastewater treatment, so that the bubbles generated must be removed promptly.

Therefore, in order to remove the bubbles generated on the surface of the fermentation tank or the liquid storage tank, a water bubble removing nozzle for spraying the water on the water surface is installed at a predetermined height and angle from the water surface, The bubbles on the surface are being removed.

However, there is a disadvantage in that the sprinkling type small-capacity device using such a conventional nozzle does not spray a wide range of water, which requires a large number of nozzles, which complicates the piping structure and makes maintenance thereof difficult.

In addition, since chemicals are used to remove the bubbles, contamination of the liquid can be caused, and it is disadvantageous in that a large amount of money is required to purchase the medicine.

The 'water bubble removing nozzle for wastewater treatment tank' of Patent Document 1 is for removing bubbles generated on the water surface of the wastewater treatment tank. The water bubble removing nozzle is composed of a nozzle body and a cock, and rotates the cock, So that foreign matter can be easily removed and cleaned when the foreign matter clogs the nozzle.

On the other hand, in Patent Document 2, the "wastewater bubble eliminator" attaches an impeller to a motor in which a rotary shaft rotates by power application, instead of a vesicle by a water spray nozzle, and rotates in a state of being immersed in the wastewater bubble, A method for removing the above-mentioned object is proposed.

Korean Registration Practice No. 20-0235391 (Jun. 2001) Korean Unexamined Utility Model Publication No. 20-2009-0010851 (October 26, 2009)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a liquefied foam removing device of an improved structure capable of effectively removing bubbles generated in the water surface of a fermentation tank or a liquid storage tank in an animal wastewater liquefaction facility .

In order to accomplish the above object, the present invention provides a bubble removing device for removing bubbles floating on a water surface of a fermentation tank or a liquid storage tank by aquatic aeration in a facility for fermenting livestock wastewater into microorganisms and liquefying it, A connection pipe connected to the pipe to be conveyed; A nozzle tip removably coupled to an end of the connection tube; A support to which the upper end is attached to the coupling pipe 10; And a diffusion plate attached to a lower end of the support so as to diffuse the water while the water sprayed from the nozzle tip collides with the water sprayed from the nozzle tip.

In a preferred embodiment, the nozzle tip is formed with a plurality of spiral grooves in the outer periphery so that the pumped water is injected with rotational force, and the nozzle tip is screwed to the distal end of the coupling tube, A male thread is formed.

In a preferred embodiment of the present invention, the diffusion plate has a high central portion and a low-pointed outline, and on the upper surface of the diffusion plate, a plurality of projections are formed radially from the central portion toward the outer periphery, .

According to the present invention, water is spirally jetted from the nozzle tip and hit the upper surface of the diffusion plate to rotate the diffusion plate, so that the water is reflected by the diffusion plate and diffuses to a larger radius while receiving centrifugal force, The bubbles on the surface of the water are effectively submerged, so that the upper surface of the reaction tank or the liquid storage tank can flow to the air and the stable treatment can be performed.

1 is a perspective view showing a defoaming device of the present invention.
2 is an exploded perspective view of the defoaming device shown in Fig.
3 is a front sectional view of the defoaming device;
4 is a view showing the diffusion state of the nozzle tip water.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 4, in this embodiment, a bubble removing device 1 for removing bubbles floating on a water surface of a fermentation tank or a liquid storage tank by water aeration in a facility for fermenting livestock wastewater into microorganisms and liquefying it ,

A connection pipe 10 connected to a pipe through which water pumped by an underwater pump not shown is conveyed;

A nozzle tip 20 detachably coupled to the distal end of the connection tube 10;

A support base 30 to which an upper end is attached to the connection pipe 10;

And a diffusion plate 40 attached to the lower end of the supporter 30 to diffuse the water while the water ejected from the nozzle tip 20 collides with the water.

In this embodiment, the nozzle tip 20 has a plurality of spiral grooves 22 deeply formed at the outer periphery thereof so that the pumped water is injected with rotational force, and the nozzle tip 20 is connected to the distal end of the connection pipe 10 And the nozzle tip 20 is screwed to the distal end of the connecting tube 10 at the bottom of the nozzle tip 20 so as to be screwed on the distal end of the connecting tube 10, A tool groove 26 is formed so as to be easy to grasp.

The top surface of the nozzle tip 20 is cone shaped so that the water supplied to the connection pipe 10 is dispersed to the outer side and is sprayed downward through the spiral groove 22 of the outer periphery.

The upper end of the support base 30 is detachably assembled to the connection pipe 10 and a diffusion plate 40 is rotatably attached to a lower side of the support base 30. The support base 30 includes a diffusion plate 34 The present invention is not limited to the shape shown in the drawings and can be manufactured in various forms.

It is preferable that the support 30 is formed in a shape that does not obstruct the water sprayed from the nozzle tip 20 and reflected by the diffusion plate 40 when the water is diffused in all directions.

A plurality of protrusions 42 are radially formed on the upper surface of the diffusion plate 40 from the central portion toward the outer periphery of the diffusion plate 40, The diffusion plate 40 is rotated by the water.

The diffusion plate 40 is installed under the bearing 44 at the lower end of the support 40 so that the diffusion plate 40 can be easily rotated even under a small rotational force. The rotation of the diffusion plate 40 causes the water impinged on the upper surface of the diffusion plate 40 to receive centrifugal force, The radius of scattering due to the simple collision is further scattered by a larger radius by the addition of the centrifugal force, so that the diffusion radius of the water becomes large.

Reference numeral 46 in the drawing denotes a bearing cover which functions to support the bearing 44 so as not to be detached from the lower end of the support base 30 and is fixed to the support base 30 by means of interference fit or welding, The inner ring is press-fitted into the lower end of the support base 30 and the diffusion plate 40 is press-fitted into the outer ring so that the diffusion plate 40 can be rotated in place by the balls between the inner and outer rings.

In the drawings of the present embodiment, the bearing 44 is a general ball bearing, but the present invention is not limited thereto, and various types of bearings can be applied. In addition, Since the water (livestock wastewater and livestock) is buried so as not to come into direct contact, the continuous rotation of the diffusion plate can be ensured.

In the present embodiment, the connection pipe 10, the nozzle tip 20, the support base 30, and the diffusion plate 40 are all made of stainless steel having excellent corrosion resistance. However, if the material is excellent in corrosion resistance, Needless to say, it can be made of materials other than steel.

4, when the water sprayed from the nozzle tip 20 is sprayed through the spiral groove 22 and strikes the upper surface of the diffusion plate 40, The water impinging on the upper surface of the diffusion plate 40 is subjected to a centrifugal force in addition to the repulsive force. Therefore, water is added by centrifugal force in addition to the scattering radius by a simple repulsive force. By spreading with a larger radius, the spreading radius of the water becomes larger, which makes it possible to more effectively remove the foam from the water surface, thereby reducing the number of nozzles to be installed and thus reducing the cost of construction and maintenance of the defoaming device There is an advantage to be able to do.

1: Defoamer
10: Connector
20: Nozzle tip
22: Spiral groove
24: Male thread
26: Tool groove
30: Support
40: diffusion plate
42: projection
44: Bearings
46: Bearing cover

Claims (4)

A bubble removing device for removing bubbles floating on a water surface of a fermentation tank or a liquid storage tank by aquatic aeration in a facility for fermenting livestock wastewater into microorganisms and liquefying it,
A connection pipe (10) connected to a pipe through which water pumped by an underwater pump is conveyed;
A nozzle tip 20 detachably coupled to the distal end of the connection tube 10;
A support base 30 to which an upper end is attached to the connection pipe 10;
And a diffusion plate 40 attached to a lower end of the supporter 30 to diffuse the water while the water ejected from the nozzle tip 20 collides with the nozzle tip 20,
Wherein the nozzle tip (20) is formed with a plurality of spiral grooves (22) on the outer periphery thereof so that the pumped water is injected so as to have rotational force.
The method according to claim 1,
Wherein the nozzle tip (20) is formed with a male screw (24) having a pitch angle smaller than that of the helical groove (22) on the outer side so as to be screwed to the end of the connection pipe (10).
The method according to claim 1,
A plurality of protrusions 42 are radially formed on the upper surface of the diffusion plate 40 from the central portion toward the outer periphery of the diffusion plate 40, And the diffusion plate (40) is rotated by the water.
The method of claim 3,
Wherein the diffuser plate (40) is installed under the bearing (44) at the lower end of the support base (40).

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