KR20050118547A - Mixer - Google Patents

Abstract

The present invention relates to an agitator, which is installed in a reaction vessel so as to be rotated by a driving source, and has a hollow, and extends in a direction in which an outer diameter extends from the lower end of the shaft to the shaft and is coupled to the shaft. The first communication hole is formed in the center to communicate with the first plate, the second plate is opposed to the first plate and spaced apart from the first plate and the second fluid so that the lower fluid flows in a position corresponding to the hollow of the shaft An impeller having a second plate having a hole is provided. According to such a stirrer, while it is easy to supply the additives into the reaction tank through the hollow of the shaft, the efficiency of the contact reaction between the supplied additives and the reaction target fluid can be improved, thereby improving the stirring efficiency.

Description

Stirrer {mixer}

The present invention relates to an agitator, and more particularly, to an agitator structured to increase agitation efficiency.

The stirrer is made to be used for mixing the dissimilar materials with each other, and a form in which a blade is attached to a shaft is widely used.

On the other hand, the aeration device or flocculation device of the wastewater purification treatment facility performs a stirring process to induce an active reaction of oxygen or flocculant and the wastewater to be treated.

However, the conventional stirrer applied to the aeration device or agglomeration device has a structure in which a blade is attached to the shaft, and since the stirring object is agitated by the vortex generated by the rotation of the blade, the stirring objects move along the swirl flow. There is a disadvantage in that the collision rate is low and the stirring efficiency is not high.

In addition, since the additives such as oxygen or flocculant to be supplied to the stirrer are supplied to the reactor through a separate supply path, there is a disadvantage in that the structure becomes complicated.

The present invention was devised to improve the above problems, and an object thereof is to provide a stirrer with a simple supply structure of an additive while increasing agitation efficiency.

In order to achieve the above object, the agitator according to the present invention includes a drive source; A shaft installed in the reaction tank so as to be rotated by the drive source and having a hollow; A first plate extending from a lower end of the shaft in a direction in which an outer diameter thereof extends and coupled to the shaft and having a first communication hole formed at a center thereof so as to be in communication with the hollow of the shaft; And an impeller having a second plate opposed to the first plate and spaced apart from the first plate, and having a second communication hole formed therein to allow a fluid of a lower portion to flow into a position corresponding to the hollow.

Preferably, the first plate is coupled to the shaft in the vicinity of the first communication hole and extending in a direction inclined with respect to the longitudinal direction of the shaft and the upper disk portion formed with a plurality of pores; And a bending portion bent downward from an end in a direction away from the first communication hole of the upper disk portion to extend a predetermined length.

In addition, the second plate is formed larger than the outer diameter of the first plate.

In addition, the bottom of the first plate is further provided with a plurality of discharge guide guide member spaced apart downwardly and spaced apart from each other, each of the discharge guide guide member is formed to extend a predetermined length in the direction in which the outer diameter is extended .

According to one aspect of the invention a plurality of dispersion guide vanes installed to extend in the longitudinal direction of the shaft through the first plate and the second plate so as to generate a swirl flow by the rotation of the shaft; Equipped.

According to another aspect of the present invention, the first plate and the second plate of the impeller are formed in a lampshade whose outer diameter gradually expands as it goes downward, and protrudes vertically on the upper surface of the first plate. It further comprises; a plurality of dispersed guide wings spaced apart from each other formed in a spiral shape.

Hereinafter, with reference to the accompanying drawings will be described in more detail a stirrer according to a preferred embodiment of the present invention.

1 is a cross-sectional view showing a stirrer according to an embodiment of the present invention, Figure 2 is an enlarged perspective view showing a part of the impeller of Figure 1, Figure 3 is an exploded perspective view showing the separation of the impeller of FIG.

1 to 3, the stirrer 100 includes a shaft 110 and an impeller 120. Reference numeral 102 denotes a reaction vessel, reference numeral 104 denotes an inlet for introducing a fluid to be treated into the reactor 102, and reference numeral 106 denotes an outlet for discharging the stirred fluid.

The shaft 110 is installed to extend from the outside of the reaction tank 102 to the inside of the reaction tank 102 so as to be rotated by a drive source. Reference numeral 113 is a bearing coupled between the reactor 102 and the shaft 110.

The shaft 110 has a hollow 111 is formed.

The shaft 110 is coupled to the motor 114 by a power transmission means to be rotated by a motor (M) 114 applied as a drive source.

In the illustrated example, the drive pulley 115 coupled to the rotary shaft 114a of the motor 114 as a power transmission means, the driven pulley 116 and the drive pulley 115 and the driven pulley 116 coupled to the shaft 110 The belt 117 connected between) was applied.

The power transmission means may be applied to a variety of known methods, such as a gear coupling structure, a chain, unlike the illustrated example.

The impeller 120 has a structure in which the additives introduced through the hollow 111 of the shaft 110 and the object to be stored in the reaction tank 102 collide with each other and are mixed and diffused out. Here, the additive and the object to be treated may be applied in various forms such as a gas, a liquid, a solid, or a mixture thereof.

In addition, the additives introduced through the hollow 111 may be applied to various kinds such as air, chemicals, in addition to oxygen.

The impeller 120 includes a first plate 121, a second plate 126, a space keeping member 128, and a dispersion guide vane 129.

The first plate 121 is coupled to the shaft 110 by extending in a horizontal direction in which an outer diameter thereof is extended about the shaft 110 at the lower end of the shaft 110.

In addition, the first plate 121 has a first communication hole (121d) is formed in the center to communicate with the hollow 111 of the shaft (110).

The first plate 121 includes an upper disk portion 121a, a bent portion 121b, and a discharge guide guide portion 121c.

The upper disk portion 121a is formed in a circular disk shape, and a first communication hole 121d is formed at the center thereof so as to communicate with the hollow 111 of the shaft 110.

The upper disk portion 121a is coupled to the lower end of the shaft 110 near the first communication hole 121d and extends horizontally along a direction inclined vertically with respect to the longitudinal direction of the shaft 110.

A plurality of pores 121e are formed in the upper disk portion 121a. Reference numeral 121f denotes a hole for inserting the space keeping member 128 formed in the upper disk portion 121a.

The bent portion 121b is bent downward from the end in the direction away from the first communication hole 121d of the upper disk portion 121a and is formed to extend a predetermined length.

The lower end of the bent portion 121b is spaced apart from the second plate 126 by a predetermined distance.

The bent portion 121b serves to narrow the side channel.

The bottom surface of the upper disk portion 121a is formed with a plurality of discharge guide guide portions 121c formed to be spaced apart from each other about the shaft 110. Preferably, the discharge guide guide portion 121c is formed at an equal angle along the radial direction.

Each discharge guide guide portion 121c protrudes downward from the bottom surface of the upper disk portion 121a, but extends a predetermined length in a direction in which the outer diameter extends.

The discharge guide guide portion 121c is formed between the dispersion guide vanes 129.

Unlike the illustrated example, the discharge guide guide portion 121c may be formed along the extending direction of the dispersion guide blade 129.

In addition, the discharge guide guide portion 121c may be radially spaced apart from each other in the same pattern, but may be formed in a spiral shape.

The second plate 126 is formed in a circular disk shape larger than the outer diameter of the first plate 121.

The second plate 126 is formed along a horizontal direction perpendicular to the shaft 110, and a second communication hole 126a is formed at the center thereof.

The second communication hole 126a may be formed larger or smaller than the first communication hole 121d in the same manner as the first communication hole 121d. Reference numeral 126f denotes a hole for inserting the space keeping member 128.

The space maintaining member 128 may fix the second plate 126 with respect to the first plate 121 so that the space between the first plate 121 and the second plate 126 is not closed. One having a degree of magnitude applies.

Preferably, the space maintaining member 128 is installed radially at regular intervals about the shaft 110.

The gap holding member 128 has a vertical bar 128a formed with a threaded line on both sides thereof and a rod shape, and a nut 128b screwed at both ends of the vertical bar 128a.

The vertical rod 128a is engaged with the periphery of the insertion holes 121f and 126f while being inserted into the insertion holes 121f and 126f formed at the corresponding positions of the first plate 121 and the second plate 126. A structure having a support portion having an outer diameter larger than the insertion holes 121f and 126f and an upper and lower insertion portion formed to have an outer diameter that can penetrate the insertion holes 121f and 126f at both sides of the support portion so as to function. Was applied.

Unlike the illustrated example, the gap retaining member may be coupled between the opposing portions between the first plate 121 and the second plate 126 by applying a structure in which the upper and lower insertion portions are omitted. In this case, the gap maintaining member may be integrally formed together with the first plate 121 and the second plate 126 or may be coupled by a separate coupling method, for example, by welding.

In addition, the gap maintaining member may be omitted when the gap maintaining and the support force between the first plate 121 and the second plate 126 is sufficiently secured by the dispersion guide blade 129 to be described later.

The plurality of guide vanes 129 are installed spaced apart from each other along the radial direction.

Each of the dispersion guide vanes 129 extends in the longitudinal direction of the shaft 110 through the first plate 121 and the second plate 126 so as to generate swirl flow by the rotation of the shaft 110. It is installed.

In addition, the dispersion guide vane 129 is a second across the first plate 121 and the second plate 126 in the radial direction from a position in which a predetermined length entered from the edge of the first plate 121 in the center direction It is coupled between the first plate 121 and the second plate 126 to extend a predetermined length further from the edge of the plate 126.

The number of applications of the dispersion guide vanes 129 may be appropriately applied.

In the example shown as the coupling method of the dispersion guide vanes 129, the insertion groove 121g into which the dispersion guide vanes 129 can be inserted from the edges of the first plate 121 and the second plate 126 toward the central portion. Forming (126g), the plate-shaped dispersion guide blade 129 is inserted into the insertion groove (121g, 126g) and then welded to form the impeller 120 has been applied.

Dispersion guide vane 129 may be omitted any one of the portion protruding upward from the bottom of the first plate 121 by a predetermined length, and the portion protruding downward from the bottom of the second plate 126 by a predetermined length. have.

Unlike the illustrated example, the dispersing guide vane 129 has a portion inserted between the first plate 121 and the second plate 126 omitted, and a portion protruding upward from the upper surface of the first plate 121 by a predetermined length. And, of course, the structure formed on at least one portion of the portion protruding a predetermined length downward from the bottom of the second plate 126 can be applied.

Alternatively, the dispersion guide vanes 129 protrude a predetermined length upward from the top surface of the first plate 121, and portions protruded downward from the bottom surface of the second plate 126 are omitted and the first plate is omitted. Of course, it can be formed to have only the portion inserted between the 121 and the second plate 126.

In addition, the dispersion guide blade 129 may be formed in various forms, such as a spiral shape or inclined structure with respect to the longitudinal direction of the shaft (110).

Hereinafter, the operation of the stirrer will be described by taking an example of agitation by supplying oxygen through the hollow of the shaft in the reaction tank in which the waste water to be treated is stored.

In this case, the oxygen supply device (not shown) is coupled to the shaft to supply oxygen through the hollow of the rotating shaft.

When the motor 114 is driven, the impeller 120 is rotated by the rotation of the shaft 110.

When the impeller 120 rotates, the area between the dispersion guide blade 129 and the reaction tank 102 corresponds to the rotation direction of the dispersion guide blade 129 to generate a turning force that rotates in the horizontal direction, and the shaft 110 and the dispersion guide. A turning force is generated between the blades 129 and between the second plate 126 and the bottom surface of the reactor 102 in the vertical direction. In addition, due to the rotation of the impeller 120, the vicinity of the second communication hole 126a becomes a vacuum state, and some of the fluid that is vertically turned at the bottom of the impeller 120 is impeller through the second communication hole 126a. 120 is entered.

Therefore, the oxygen flowing through the hollow 113 of the shaft 110 and proceeding downward and the wastewater rising upward through the second communication hole 126a of the second plate 126 are first communication holes 121d. After colliding with each other in the region between the second communication hole 126a and mixing, the mixture is diffused into the region between the first plate 121 and the second plate 126 by centrifugal force.

The mixed oxygen and the waste water are diffused in the radial direction along the flow path between the first plate 121 and the second plate 126, and are divided radially and evenly by the discharge guide guide member 121c to divide the first plate ( Between the 121 and the second plate 126 proceeds in the direction of the dispersion guide vanes (129, 229). In this process, the mixed oxygen and wastewater are finely pulverized and mixed through the pores 121e, and then partially discharged to the upper part, and some reach the bent portion 121b and then see the flow path narrowed by the bent portion 121b. After being diffused at a high speed, it is discharged between the dispersion guide vanes 129.

In addition, the oxygen and wastewater mixture diffused upward through the pores 121e of the first plate 121 collide and mix again with the fluid which is pivoted downwardly from the top of the shaft 110 by the rotation of the impeller 120. do.

As such, the oxygen supplied downward through the shaft 110 and the wastewater introduced through the second communication hole 126a of the second plate 126 are mixed with each other through a process of collision and diffusion to increase oxygen solubility. Can be.

4 and 5 are cross-sectional and plan views of impeller portions of a stirrer according to another embodiment of the present invention. Elements having the same function as in the above-described drawings are denoted by the same reference numerals, and are described.

Referring to the drawings, the stirrer 200 includes a shaft 110 and an impeller 220 coupled to the lower end of the shaft 110.

The shaft 110 is installed in the reactor to be rotated by a drive source such as a motor as described above.

The impeller 220 has a structure in which the outer diameter gradually expands as it progresses downwardly about the shaft 110, that is, a first plate 221 made of a freshly inclined peripheral portion lower than the center portion, and a first plate 221. And a second plate 226 spaced apart from each other and formed in a fresh shape.

Reference numeral 221a denotes an upper disk portion, reference numeral 221b denotes a bent portion, and reference numeral 228 denotes a space keeping member.

The plurality of dispersion guide vanes 229 are formed on the upper surface of the first plate 221 so as to be spaced apart from each other.

Dispersion guide blades 229 protrude vertically from the upper surface of the first plate 221 is formed in a spiral shape.

The impeller 220 of this structure has a lifting force of the fluid flowing through the second communication hole 126a of the second plate 226 at the bottom of the second plate 226 than the impeller 120 described above with reference to FIG. Can be made higher.

Such agitators 100 and 200 may be used for various purposes for mixing and stirring heterogeneous materials in addition to wastewater treatment.

As described above, according to the stirrer according to the present invention, while the supply of the additive into the reactor through the hollow of the shaft is easy, the efficiency of the contact reaction between the supplied additive and the reaction target fluid can be improved, thereby improving the stirring efficiency.

1 is a cross-sectional view showing a stirrer according to an embodiment of the present invention,

Figure 2 is a perspective view showing an enlarged partial extract of the impeller of Figure 1,

3 is an exploded perspective view illustrating the impeller of FIG. 2.

Figure 4 is a cross-sectional view showing an extract of the impeller portion of the stirrer according to another embodiment of the present invention,

5 is a plan view of the impeller portion of FIG. 4.

<Description of Symbols for Major Parts of Drawings>

100, 200: agitator 110: shaft

120, 220: impeller 121, 221: first plate

126, 226: second plate

Claims (6)

A drive source; A shaft installed in the reaction tank so as to be rotated by the drive source and having a hollow; A first plate extending from a lower end of the shaft in a direction in which an outer diameter thereof extends and coupled to the shaft and having a first communication hole formed at a center thereof so as to be in communication with the hollow of the shaft; And an impeller having a second plate opposed to the first plate and spaced apart from the first plate, and having a second communication hole formed therein so as to allow a fluid of a lower portion to flow into a position corresponding to the hollow. According to claim 1, The first plate is coupled to the shaft in the vicinity of the first communication hole and extending in a direction inclined with respect to the longitudinal direction of the shaft and the upper disk portion formed with a plurality of pores; And a bending portion bent downward at an end in a direction away from the first communication hole of the upper disk portion to extend a predetermined length. The stirrer according to claim 2, wherein the second plate is formed larger than an outer diameter of the first plate. 4. The apparatus of claim 3, further comprising: a plurality of dispersion guide vanes installed to extend in a longitudinal direction of the shaft through the first plate and the second plate so as to generate swirl flow by rotation of the shaft. Stirrer characterized in that. According to claim 3, wherein the first plate and the second plate of the impeller is formed in the shape of a lampshade that the outer diameter gradually expands as it goes downward, And a plurality of dispersion guide vanes protruding vertically from one another and spirally spaced apart from each other on the upper surface of the first plate. The method of claim 1, further comprising a plurality of discharge guide guide members protruding downwardly from the bottom of the first plate and spaced apart from each other, Each of the discharge guide member is formed to extend a predetermined length in the direction in which the outer diameter is extended.