KR101819545B1 - Double-acting horizontal paddle type flocculator - Google Patents

Abstract

The present invention relates to a double-acting horizontal paddle type flocculator. By applying the rotational structure of an inner paddle and an outer paddle in dual axis acting types, rotational speed can be variably applied with a regular ratio with respect to the inner paddle and the outer paddle through structural application of the dual axis acting types. Accordingly, equivalent speed inclination values or equivalent flocculation efficiency can be realized over the whole area of the flocculation areas.

Description

Double-acting horizontal paddle type flocculator < RTI ID = 0.0 >

The present invention relates to a dual-drive horizontal paddle type flocculator, and more particularly, to a double-acting horizontal paddle type flocculator, and more particularly, to a dual- The present invention relates to a double-acting horizontal paddle type flocculant capable of realizing the same speed gradient value or the same flocculation efficiency throughout the whole flocculation area through the variable rate of rotation speed.

Generally, the water treatment process of the water treatment plant consists of a mixing process in which raw water and a coagulant are uniformly mixed by injecting a coagulant into the raw water and operating a vertically installed propeller, and an agglomeration process.

At this time, the flocculation process flocculates the flocs contained in the raw water by sending the mixed raw water to the flocculator having a plurality of paddles, so that the flocculated raw water flows into the settling basin so that the floc lumps sink to the bottom and accumulate on the floor And removing only the clean water on the upper side from which the flock has been removed, and supplying it to the outside.

That is, the flocculator is a device for flocculating flocs contained in raw water mixed with coagulant by rotating paddles in water.

On the other hand, as a parameter used by many engineers in designing the aggregator in the flocculation process through the flocculator as described above, the slope value G (G) proposed in 1943 by Camp and Stein as shown in Equation value.

Here, G: speed slope value (1 / s)

P: Power required for agglomeration (watt)

μ: absolute viscosity coefficient of water (N.s / m.sup.2 or Pa.s)

V: Volume of aggregate (㎥)

In Equation (1), the velocity gradient value G is influenced only by the power applied to the cohesive paper, the viscosity coefficient (affected by the water temperature), the cohesive paper volume, and the cohesive paper. It can be seen that the power must be increased.

But Cleasby. JL (1984) proposed the geometrical conditions such as the power per unit weight and the shape and size of aggregate and aggregate as parameters of aggregation. Especially, it is not necessary to increase the power to aggregate at low temperature, The influence of the geometric condition of the surface is large.

In the shape of the condenser wing, experiments were conducted on a condenser impeller having a hydrofoil-shaped impeller, a Reike-type paddle condenser impeller (horizontal paddle-type condenser) and a mesh condenser impeller. The difference in shape was negligible. However, at low water temperature of 5 ℃, the coagulation effect of mesh type impeller was the highest, that of horizontal paddle type coagulant showed a slightly low coagulation effect and that of hydrofoil type had the lowest coagulation effect .

Eddy size eddy sizes are not helpful for flocculation, and vortexes of very small size, represented by colomorphic microscales, do not help flocculation.

As can be seen from Equation (2), the magnitude of the Kolmogorov microscale becomes smaller as the amount of power applied to the water increases. In the vicinity of the impeller rotating at high speed, the power per unit volume It is understood that the size of the Colm mortar micro scale is small and does not contribute to flocculation.

Where: [lambda]: cologne loop micro scale ([mu] m)

ε: power applied to water (watt)

υ: Dynamic viscosity of water (㎡ / s)

These results suggest that the horizontal paddle type agglomerator with different agitation strength is required for each paddle position.

On the other hand, a conventional horizontal paddle type flocculator, which is one of the most widely used flocculation apparatuses that have been widely used in water treatment plants and has been proved to be relatively excellent in performance, has a peripheral speed of 0.3 to 0.75 m / s (outer paddle: long flap with a rectangular cross section) The range is mainly driving.

However, the horizontal paddle type cohesive machine has a very large difference between the circumferential velocity inside the paddle and the circumferential velocity inside, that is, the rotational speed gradually increases from the inside to the outside of the paddle center, There is a problem that it is difficult to realize uniform coagulation efficiency over the whole of the vessel.

Furthermore, in the conventional horizontal paddle type flocculator, the velocity gradient (G value), which is one of the important indexes of the flocculator operation, is proportional to the 1.5th power of the paddle velocity, And the velocity gradient value becomes smaller in proportion to the 1.5th power of the velocity. Therefore, the rate of contribution to coagulation sharply decreases as compared with the paddle area, and the velocity gradient value is different depending on the position of coagulation.

Therefore, there is a need for a research and development of a horizontal paddle-type flocculator capable of realizing the same velocity gradient value or the same flocculation efficiency at all locations throughout the flocculation area.

Registered Korean Patent No. 1100243 Dec. 22, 2011. Registered. Registered Korean Patent No. 1666559 October 10, 2016. Registered.

In order to solve the above-mentioned problems, the present invention adopts a double shaft driving type inner paddle and an outer paddle rotation structure to apply a structure of a double shaft driving type so as to rotate the inner paddle and the outer paddle at a constant rate And to provide a double-acting horizontal paddle type flocculator which can be applied variably.

In addition, according to the present invention, by adopting a double shaft driving type inner paddle and a rotating structure of outer paddles, by applying the structure of the double shaft driving type, the rotating speed is variably applied to the inner paddle and the outer paddle at a constant rate, So that it is possible to realize the same speed gradient value or the same flocculation efficiency throughout the ground area.

The present invention for achieving the above-mentioned objects is as follows. That is, the double-acting horizontal paddle type flocculator according to the present invention is a double-acting horizontal paddle type flocculator comprising: a body including first and second walls vertically extending on both sides of a bottom surface; First, second, third, and fourth shaft supporting walls formed between the first wall and the second wall of the main body so as to protrude upwards at regular intervals in the longitudinal direction of the bottom surface; A paddle arm installed to be rotatable through an inner drive shaft having a solid shaft type between the shaft support walls and having a first end connected to the outer surface in the longitudinal direction of the inner drive shaft at a predetermined interval in a circumferential direction, An inner paddle in which paddles are fixedly installed at regular intervals in the longitudinal direction from the other end of the paddle arm; A paddle arm installed to surround the outside of the inner paddles and rotatably installed through an outer drive shaft having a hollow shaft type and having one end connected to the outer surface of the outer drive shaft at a predetermined interval in a circumferential direction, An outer paddle in which paddles are fixedly installed at regular intervals in the longitudinal direction from the other end of the arm; A side bearing support part provided on the first and fourth shaft support walls to support the inner drive shaft for rotation of the inner paddle; A central shaft bearing installed on the second and third shaft supporting walls to support a pipe connecting shaft for connecting the outer paddles to each other for rotation; And driving means for rotationally driving the inner paddle and the outer paddle by variably applying a rotational speed to the inner paddle and the outer paddle at a constant ratio.

Here, the driving means may include a first driving gear provided on a motor shaft, a driving motor having a second driving gear provided on the motor shaft at a predetermined interval from the first driving gear, And an inner drive gear provided at an end portion of the inner drive shaft which is rotatably supported by a side bearing water portion provided on the upper portion of the fourth shaft support wall, the inner drive gear being rotatably driven by receiving the drive force through the first drive gear and the first drive chain, ; And a second driving gear which is rotatably driven by receiving a driving force through the second driving gear and is connected to the pipe connecting shaft at one end of the outer driving shaft of the outer paddle so as to be rotatable with the inner driving shaft inserted And an external drive gear provided on one side of a bearing housing provided on a side bearing bearing provided on the fourth shaft support wall to have a diameter larger than that of the internal drive gear, .

At this time, it is preferable that the external drive gear is provided at one side of the bearing housing, and is formed as a sprocket type at one flange portion of the bearing housing.

A bearing housing for supporting the inner drive shaft to be rotatable in a state where the inner drive shaft is inserted is connected to one end of the outer drive shaft of the outer paddle arranged to surround the outer paddle, And the bearing housings disposed on the secondary side are interconnected through the pipe connecting shaft to interconnect the outer paddles.

Further, the pipe connection shaft supported rotatably through the central bearing portion may further include a bearing for rotatably supporting the internal drive shaft at an inner center so that the internal drive shaft is rotatably inserted in the interior thereof .

The effect of the dual drive horizontal paddle type flocculator according to the present invention will be described as follows.

First, by adopting the double shaft driving type inner paddle and the outer paddle rotating structure, the rotating speed can be variably applied to the inner paddle and the outer paddle at a certain rate by applying the structure of the double shaft driving type.

Second, by adopting the double shaft driving type inner paddle and the outer paddle rotating structure, by applying the structure of the double shaft driving type, the rotating speed is applied to the inner paddle and the outer paddle at a constant rate, A speed gradient value or the same flocculation efficiency can be realized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing the structure of a double-drive horizontal paddle type flocculator according to the present invention. FIG.
FIG. 2 is a schematic view of a double-drive horizontal paddle type flocculator according to the present invention, in which a paddle portion structure is provided on an upper portion of a first shaft supporting wall, which is an outermost shaft supporting wall supporting an inner paddle and a shaft portion for rotational driving of outer paddles Fig.
FIG. 3 is a schematic view of a double-acting horizontal paddle type flocculator according to the present invention, showing the structure of a bearing structure on the upper part of the fourth shaft supporting wall, which is the other outermost shaft supporting wall supporting the inner paddle, Fig.
FIG. 4 is a cross-sectional view of a double-drive horizontal paddle type flocculator according to the present invention, in which the second and third shaft supporting walls, which are shaft supporting walls provided between both the outermost sides of the inner paddles and the outer paddles, Fig. 3 is an enlarged view of the main part showing the upper bearing structure.
FIG. 5 is an enlarged view showing a structure of a dual drive horizontal paddle type flocculator according to the present invention, in which internal paddles and external paddles are rotationally driven in a dual drive type.
FIG. 6 is a schematic view of a double-drive horizontal paddle type flocculator according to the present invention, in which the second and third shaft supporting walls, which are shaft supporting walls provided between the inner paddle and the outermost sides supporting the shaft portions for rotational driving of the outer paddles, Fig. 5 is an enlarged schematic view showing another embodiment of the upper bearing structure; Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

1 is a view illustrating the structure of a double-acting horizontal paddle type flocculator according to the present invention.

FIG. 2 is a schematic view of a double-drive horizontal paddle type flocculator according to the present invention, in which a paddle portion structure is provided on an upper portion of a first shaft supporting wall, which is an outermost shaft supporting wall supporting an inner paddle and a shaft portion for rotational driving of outer paddles Fig. 3 is a view showing the main part of the double-driving horizontal paddle type flocculator according to the present invention, in which the inner paddle and the other outer shaft supporting wall supporting the shaft portion for rotational driving of the outer paddles, Fig. 4 is an enlarged view of the main part showing the structure of the bearing on the upper part of the shaft supporting wall. Fig. 4 is a view showing the double-driving horizontal paddle type flocculator according to the present invention, Fig. 3 is an enlarged view of the main parts of the shaft supporting structure of the second and third shaft supporting walls.

FIG. 5 is an enlarged view of the main part showing a structure in which the inner paddle and the outer paddle are rotationally driven in the double-drive type in the double-drive horizontal paddle type flocculator according to the present invention.

As shown in FIGS. 1 to 5, the double-acting horizontal paddle type flocculator according to the preferred embodiment of the present invention varies the rotation speed of the inner paddle and the outer paddle at a constant rate The first, second, third, and fourth shaft supporting walls 151, 152, 153, and 154, the inner paddle 200, An outer paddle 300, side bearing portions 451 and 454, central bearing portions 452 and 453, and driving means.

Here, the main body 100 includes first and second walls 120 and 130 extending vertically on both sides of the bottom surface 110.

The first, second, third, and fourth shaft supporting walls 151, 152, 153, and 154 are disposed between the first wall 120 and the second wall 130 of the main body 100, And the bottom surface 110 is protruded upwards at regular intervals in the longitudinal direction.

The inner paddle 200 is rotatably installed between the shaft supporting walls 151, 152, 153 and 154 through an inner driving shaft 600 having a solid shaft type.

The inner paddle 200 includes a paddle arm 210 having an outer surface with respect to the longitudinal direction of the inner drive shaft 600, one end of which is connected to the outer surface of the paddle arm 210 at a predetermined interval in the circumferential direction, The paddles 220 are fixedly installed at predetermined intervals in the longitudinal direction.

The outer paddle 300 is installed so as to surround the outer portion of the inner paddle 200 and is rotatable through an outer drive shaft 700 having a hollow shaft type.

The outer paddle 300 includes a paddle arm 310 having an outer surface of the outer drive shaft 700 and having one end connected to the outer surface of the paddle arm 310 at a predetermined interval in the circumferential direction, It is preferable that the paddle 320 is fixedly installed at a predetermined interval.

The side bearing portions 451 and 454 are provided on the upper portions of the first and fourth shaft supporting walls 151 and 154 and are rotatable about the inner drive shaft 600 for rotating the inner paddle 200 It is to support.

The central shaft support portions 452 and 453 are installed on the upper portions of the second and third shaft support walls 152 and 153 and include a pipe connection shaft 300 'for axially connecting the outer paddles 300 So that it can rotate.

The driving unit variably applies a rotational speed to the inner paddle 200 and the outer paddle 300 at a predetermined ratio to rotate the inner paddle 200 and the outer paddle 300.

Here, the driving unit may include a driving motor 800, an internal driving gear 950, and an external driving gear 960.

Specifically, the driving motor 800 includes a first driving gear 811 provided on the motor shaft 810, a second driving gear 811 provided on the motor shaft 810 at a predetermined interval from the first driving gear 811, 2 drive gear 812. [

The inner drive gear 950 is rotatably driven by receiving the driving force through the first driving gear 811 and the first driving chain 910 and is rotatably driven by the fourth shaft supporting wall body 154 are rotatably supported on the side bearing support portion 454.

The external drive gear 960 is rotatably driven by receiving the driving force through the second driving gear 812 and the second driving chain 920 and is rotatably driven by the driving force transmitted to one side of the external driving shaft 700 of the external paddle 300 A bearing housing 550 connected to the pipe connecting shaft 510 at an end thereof to support the inner drive shaft 600 so as to be rotatable with the inner drive shaft 600 inserted therein, The inner drive gear 950 has a diameter larger than that of the inner drive gear 950 at one side of the bearing housing 550 provided at the side of the inner drive gear 454.

In other words, in the double-acting horizontal paddle type flocculator according to the present invention, it is important to make variable the rotational speeds of the inner paddle 200 and the outer paddle 300. For this purpose, The diameters of the external drive gear 960 and the internal drive gear 950 are different from each other with respect to the first drive gear 811 and the second drive gear 812 provided.

The outer drive gear 960 and the inner drive gear 950 may be adjusted by adjusting the diameter of the inner drive gear 950 in consideration of the diameter of the outer drive gear 960.

The external drive gear 960 may be provided at one side of the bearing housing 550 and may be formed as a sprocket at one flange portion of the bearing housing 550.

The double drive horizontal paddle type flocculator according to the present invention as described above is provided at one end of the external drive shaft 700 of the external paddle 300 arranged to surround the outside of the internal paddle 200, It is preferable that the bearing housing 550 is rotatably supported in a state where the bearing housing 600 is inserted.

The bearing housings 550 of the bearing housings 550 are connected to each other through the pipe connecting shaft 510 so that the outer paddles 300 are connected to each other. .

FIG. 6 is a schematic view of a double-drive horizontal paddle type flocculator according to the present invention, in which the second and third shaft supporting walls, which are shaft supporting walls provided between the inner paddle and the outermost sides supporting the shaft portions for rotational driving of the outer paddles, Fig. 8 is an enlarged view of the main part showing another embodiment of the upper bearing structure; Fig.

The embodiment shown in FIG. 6 is different from the embodiment described with reference to FIGS. 1 to 5 in that the pipe connecting shaft 510 is provided without the bearing housing 550 only on the bearing structure on the second and third shaft supporting walls, The outer drive shaft 700 is rotatably supported in a state where the inner drive shaft 600 is inserted therein, but is rotatably supported by the bearing 511. Hereinafter, A detailed description of the configuration will be omitted.

Referring to FIG. 6, referring to FIG. 1, the pipe connecting shaft 510, which is rotatably supported through the central axis portions 452 and 453, is rotated in a state where the inner driving shaft 600 is inserted therein A bearing 511 for rotatably supporting the inner drive shaft 600 may be further provided at an inner center so as to be able to support the inner drive shaft 600 as much as possible.

At this time, the pipe connecting shaft 510 is rotatably supported through the central bearing portions 452 and 453 on the upper portions of the second and third shaft supporting walls 152 and 253 without a separate bearing housing, It is preferable that both ends are provided so as to connect the neighboring external drive shaft 700 without a separate bearing housing.

Meanwhile, in the double-drive horizontal paddle type flocculator according to the present invention, the connecting portion of the pipe connecting shaft 510 and the bearing housing 550 may be connected to each other through a conventional bolting connection, It is preferable to connect them through the connecting means of the connecting means.

In addition, the double-acting horizontal paddle type flocculator according to the present invention as described above can be applied to the inner paddle type and the outer paddle type by varying the rotation speed of the inner paddle and the outer paddle at a constant rate, Particularly, it is preferable that the relative rotation speed of the inner paddle and the outer paddle is applied to a structure in which the inner paddle rotates at a relatively high speed while the outer paddle rotates at a relatively low speed.

That is, according to the double-acting horizontal paddle type flocculator of the present invention as described above, by adopting the double shaft driving type inner paddle and the rotating structure of the outer paddles, The rotational speed can be variably applied at a constant ratio.

In addition, by adopting the double shaft driving type inner paddle and the outer paddle rotating structure, by applying the structure of the double shaft driving type, the rotating speed can be variably applied to the inner paddle and the outer paddle at a constant rate, The speed gradient value or the same flocculation efficiency can be realized.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, the invention is not limited thereto. Various modifications may be made by those skilled in the art. Are included in the scope of the present invention.

100:
110: bottom surface 120: first wall
130: second wall
151, 152, 153, 154: first, second, third, and fourth shaft supporting walls
200: Internal paddle
210: paddle arm 220: paddle
300: Outside paddle
310: paddle arm 320: paddle
451, 454: side bearing part 452, 453: central bearing part
510: Pipe connecting shaft 511: Bearing
550: Bearing housing
600: inner drive shaft 700: outer drive shaft
800: drive motor
810: motor shaft 811: first drive gear
812: Second drive gear
910: first drive chain 920: second drive chain
950: internal drive gear 960: external drive gear

Claims (5)

In a dual drive horizontal paddle type flocculator,
A main body 100 including first and second walls 120, 130 extending vertically on both sides of a bottom surface 110;
The first, second, third, and fourth protrusions are formed between the first wall 120 and the second wall 130 of the main body 100 and protrude upwards at regular intervals in the longitudinal direction of the bottom surface 110. A shaft support wall (151, 152, 153, 154);
And is rotatably installed between the shaft support walls 151, 152, 153, and 154 through an inner drive shaft 600 having a solid shaft type, and one end is provided on the outer surface of the inner drive shaft 600 in the longitudinal direction An inner paddle 200 having paddles 210 connected at a predetermined interval in the circumferential direction, and paddles 220 fixed at a predetermined interval in the longitudinal direction from the other end of the paddle arms 210;
The outer drive shaft 700 is installed to be rotatable through an outer drive shaft 700 having a hollow shaft type so as to surround the outer surface of the inner paddle 200. One end of the outer drive shaft 700 An outer paddle 300 having paddles 320 fixed at a predetermined interval in the longitudinal direction from the other end of the paddle arm 310;
Side bearing support portions 451 and 454 installed on the first and fourth shaft support walls 151 and 154 to support the inner drive shaft 600 for rotation of the inner paddle 200;
A central shaft support portion 452 or 453 which is installed on the second and third shaft support walls 152 and 153 and rotatably supports a pipe connection shaft 510 for connecting the outer paddles 300 ); And
And a driving means for rotationally driving the inner paddle 200 and the outer paddle 300 by varying the rotational speed of the inner paddle 200 and the outer paddle 300 at a constant ratio, Coagulant.
The method according to claim 1,
The driving means includes:
A first driving gear 811 provided on the motor shaft 810 and a second driving gear 812 provided on the motor shaft 810 at a predetermined interval from the first driving gear 811, (800);
And a side bearing bearing portion (not shown) provided on the fourth shaft supporting wall body 154 of the inner drive shaft 600 to be rotatably driven by receiving the driving force through the first driving gear 811 and the first driving chain 910, An internal drive gear (950) provided at an end rotatably supported by the drive shaft (454); And
The pipe connecting shaft 510 is rotatably driven by receiving the driving force through the second driving gear 812 and the second driving chain 920 and is connected to one end of the external driving shaft 700 of the external paddle 300, And a bearing housing (550) provided on a side of the side bearing bearing portion (454) provided on the upper side of the fourth shaft supporting wall body (154) of the bearing housing (550) And an external drive gear (960) provided on one side of the inner drive gear (550) to have a diameter larger than the diameter of the internal drive gear (950).
3. The method of claim 2,
Wherein the external drive gear (960) is provided at one side of the bearing housing (550), and is formed as a sprocket type at one flange portion of the bearing housing (550).
The method according to claim 1,
A bearing housing 550 which supports the inner drive shaft 600 so as to be rotatable in a state where the inner drive shaft 600 is inserted is provided at one end of the outer drive shaft 700 of the outer paddle 300 arranged to surround the outer side of the inner paddle 200 And a bearing housing 550 disposed at the center bearing portions 550 and 453 of the bearing housing 550 is connected to the outer paddle 300 through the pipe connecting shaft 510. [ Are connected to each other.
The method according to claim 1,
The pipe connecting shaft 510 rotatably supported through the central shaft support portions 452 and 453 is rotatably supported by the inner drive shaft 600 so that the inner drive shaft 600 is rotatably inserted therein. 600) is rotatably supported by the bearing (511).

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