KR20020011810A - Polymer mixing feed system - Google Patents

Abstract

PURPOSE: Provided is a polymer mixing and feeding system to prevent solidification of polymer. A generator producing turbulent flow is installed to increase solubility of polymer. Also an ejector is installed for uniform dispersion of polymer. CONSTITUTION: The system consists of: a hopper(10) for storing polymer; a polymer supplier equipped with the hopper(10); the generator(14), for producing turbulent flow, equipped with the polymer supplier; an air/polymer supplying pipe(22) equipped with the generator(14); a pump(26) for supplying water for dissolving polymer; a pipe(28), equipped with the pump(26), for supplying water; the ejector(24) equipped with the air/polymer supplying pipe(22) and the water supplying pipe(28); and a solution tank(36) containing impeller.

Description

Coagulant dissolving device {POLYMER MIXING FEED SYSTEM}

The present invention relates to a flocculant dissolving apparatus used in a sewage treatment plant, wastewater treatment plant or water purification plant, the conventional flocculant dissolving apparatus is published in the public utility model publication (Publication No. 2000-0005013), or registered utility model publication (registration number) (0113114), and the like.

The conventional flocculant dissolving apparatus dissolves the flocculant mainly in the dissolution tank in which the impeller is installed. If the dissolution tank is not evenly distributed and supplied to the dissolution tank in the flocculant supply device, the flocculant aggregates and does not dissolve well or the concentration of the dissolution liquid is not uniform.

In addition, the flocculant is easily absorbed by the moisture in the air and the moisture evaporated from the dissolution tank to solidify or solidify, so that coagulation or solidification of the coagulant remaining in the dissolution device causes failure of the dissolution device if left unattended or neglected management. There is a disadvantage that results in waste of flocculant.

The present invention provides a vortex generator for forming a vortex in the coagulant introduced from the coagulant feeder to uniformly disperse and introduce the coagulant and improve the solubility of the coagulant, and an ejector for uniformly dispersing and dissolving the coagulant in the dissolved water before entering the melting tank. Provided is a flocculant dissolving device comprising a mixture feed tube and a ball tank.

In addition, the present invention is to remove the flocculant remaining in the flocculant dissolving device during the operation of the flocculant dissolving device, the flocculant dissolving device including a washing tube and a moisture blocking means for discharging the water vapor evaporated from the dissolution tank into the atmosphere To provide.

In addition, in the present invention, in order to increase the solubility of the flocculant in the dissolution tank and to make the concentration of the dissolution liquid uniform, the bottom of the dissolution tank is curved, and an impeller guide and a guide vane are provided inside the dissolution tank.

1 is a schematic diagram of a flocculant dissolving device according to the present invention;

Figure 2 is a left side view of Figure 1;

3 is a plan view of FIG.

Figure 4a is a state of operation of the moisture blocking means at the time of vortex generator operation in the present invention.

Figure 4b is an operating state of the moisture blocking means at the time of operation of the vortex generator in the present invention.

5 is a cross-sectional view taken along the line AA ′ of FIG. 1.

* Explanation of symbols for the main parts of the drawings

10: Coagulant Storage Hopper 12: Coagulant Feeder

12a: coagulant supply cylinder 12b: screw conveyor

M: Rotating power unit 13: Screw conveyor drive shaft

14: Vortex generator 16: Air supply pipe

18: blower 20: moisture blocking means

20a: moisture barrier tube 20b: moisture barrier plate

20c: Air vent 22: Air / coagulant supply pipe

24: ejector 24a: first inlet

24b: 2nd inlet part 24c: discharge part

26: dissolved water supply pump 28: dissolved water supply pipe

30: mixture supply pipe 32: ball tank

34: melting tank introduction pipe 36: melting tank

36a: melting tank ceiling 36b: melting tank bottom

36c: side of the melting tank 38: stirrer

40: Stirring shaft 42: Impregnation prevention impeller

44: Impeller Guide 46: Guide Vane

48: upper impeller 50: washing tube

50a: washing valve 52: bypass pipe

52a: bypass valve

In order to achieve the above object, the present invention provides a flocculant storage hopper for temporarily storing the flocculant,

A coagulant feeder having one end connected to the coagulant storage hopper,

A vortex generator connected to the other end of the flocculant feeder,

An air / coagulant supply pipe connected to the vortex generator and one end,

Dissolved water supply pump for supplying dissolved water in which the flocculant is dissolved,

A dissolution water supply pipe having one end connected to the dissolution water supply pump,

An ejector including a first inlet connected to the other end of the air / coagulant supply pipe, a second inlet connected to the other end of the dissolved water supply pipe, and an outlet;

A mixture supply pipe connected to an outlet of the ejector and one end thereof,

It provides a flocculant dissolving apparatus comprising a dissolution tank including a stirring shaft driven by the stirrer and an impeller installed on the stirring shaft.

On the other hand, the present invention provides a flocculant dissolving device in which the connection line of the second inlet and outlet of the ejector forms a venturi tube, and also provides a flocculant dissolving apparatus in which a spiral guide protrusion is formed inside the mixture supply pipe, and a mixture supply pipe. The other end of the also provides a flocculant dissolving device that is connected to the ball tank including a ball (ball) inside.

In addition, the present invention is further provided with a moisture blocking means between the vortex generator and the air and coagulant supply pipe, the moisture blocking means open between the vortex generator and the air and coagulant supply pipe when the vortex generator is in operation, the vortex when the vortex generator is inoperative It also provides a flocculant dissolving device including a moisture barrier plate for closing between the generator and the air and the coagulant supply pipe, wherein the moisture barrier means is air between the moisture barrier plate and the one end of the air and coagulant supply pipe, open to the atmosphere There is also provided a flocculant dissolving apparatus further comprising a vent.

The present invention also provides a flocculant dissolving apparatus in which the bottom portion of the dissolution tank is naturally connected to the side portion of the dissolution tank in a curved shape, and the impeller is installed near the bottom of the dissolution tank.

In addition, in the present invention, the stirring shaft is installed inside the cylindrical impeller guide, the impeller is installed inside the impeller guide, the guide vane of a certain height is installed on the bottom of the melting tank, the upper impeller is installed on the impeller top It also provides a flocculant dissolving device that is additionally installed.

The present invention also provides a flocculant dissolving device which is connected to both ends of the dissolution water supply pipe and the dissolution tank, and further includes a bypass pipe having an on / off valve, and is provided at both ends between the dissolution water supply pipe and the air / coagulant supply pipe. This is connected, and also provides a flocculant dissolving apparatus further comprising a washing tube having an on-off valve. .

Hereinafter, the configuration of a preferred embodiment according to the present invention with reference to the drawings.

1 shows a schematic view of a flocculant dissolving apparatus according to the present invention, FIG. 2 shows a left side view of FIG. 1, FIG. 3 shows a plan view of FIG. 1, and FIG. 4A shows moisture blocking during operation of the vortex generator in the present invention. Figure 4b shows a state diagram of the means operating state, Figure 4b shows a state diagram of the moisture blocking means when the vortex generator operation stops in the present invention, Figure 5 shows a cross-sectional view of the AA 'line of Figure

1 and 2, the flocculant dissolving apparatus according to the present invention has a flocculant storage hopper (10). The coagulant storage hopper 10 is cylindrical at the top and conical at the bottom.

The conical coagulant storage hopper 10 is preferably connected to the upper end of one end of the coagulant feeder 12, it may be connected to the side portion of one end. The coagulant feeder 12 has a hollow coagulant feed cylinder 12a and a screw conveyor 12b embedded therein (meaning a conveyor with a spiral blade on its shaft). The screw conveyor 12b is connected to the screw conveyor drive shaft 13 connected to the rotary power unit M. As shown in FIG.

At the other end of the coagulant feeder 12, the vortex generator 14 is connected. 2 and 3, the coagulant feed cylinder 12a at the other end of the coagulant feeder 12 is preferably a cylindrical shape slightly larger than the outer periphery of the screw conveyor 12b, but the screw conveyor (screw) conveyor (12b) Any shape may be used as long as the wing is included therein. 4A and 4B, the vortex generator 14 is connected to the air supply pipe 16 in a direction crossing the screw conveyor 12b axis, and the air supply pipe 16 is connected to the blower 18.

4A and 4B, moisture blocking means 20 is connected to the end of the vortex generator 14. The moisture barrier means 20 includes a moisture barrier tube 20a, a moisture barrier plate 20b, and an air vent 20c, wherein the moisture barrier plate 20b is slightly smaller than the cross section of the moisture barrier tube 20a or has a cross section. The thin and light plate adjacent to the moisture barrier tube (20a) is installed so as to be able to swing in the longitudinal direction in the longitudinal direction, the air vent (20c) is connected to the moisture barrier tube (20a) is opened in the atmosphere. In addition, the air vent 20c rotates in the transfer direction of the air and flocculant mixture around the contact portion of the moisture barrier plate 20b with the moisture barrier tube 20a, so that the moisture barrier plate 20b faces the moisture barrier tube 20a. ) It is good to be installed at the part contacting the inner wall. As shown in FIGS. 4A and 4B, the moisture barrier tube 20a is bent downward in a “a” shape centering on the moisture barrier plate 20b installation portion, and the air vent 20c is provided with the moisture barrier plate 20b. When the moisture barrier tube 20a is blocked, the lower portion of the moisture barrier tube 20a may be installed to be straight.

However, the present embodiment is not limited thereto, and the moisture barrier tube 20a may have a straight shape around the moisture barrier plate 20b installation portion. In addition, the moisture blocking means 20 is larger than the cross section of the other end of the vortex generator 14, so that the cross section of the portion where the moisture barrier plate 20b is installed in the moisture blocking tube 20a. Depending on the operation, the moisture barrier plate 20b may be moved in a direction perpendicular to the moisture barrier tube 20a to open and close between the vortex generator 14 and the air / coagulant supply pipe 22 described later. In addition, the moisture blocking means 20 does not need to include the moisture blocking plate 20b and the air vent 20c at the same time, and may include only one.

1 and 2, the moisture blocking means 20 is connected to one end of the air / coagulant supply pipe 22, and the other end of the air / coagulant supply pipe 22 is the first inlet portion of the ejector 24 ( 24a). In the present invention, it is preferable that the cross-sectional area of the other end of the air / coagulant supply pipe 22 connected to the first inlet 24a of the ejector 24 is gradually narrowed, otherwise the first of the ejector 24 is reduced. It is preferable that the cross-sectional area of the inflow portion 24a gradually narrows.

However, the present embodiment is not limited thereto, and the cross-sectional area of the other end portion of the air / coagulant supply pipe 22 and the cross-sectional area of the first inlet portion 24a of the ejector 24 may be uniform.

Referring again to FIGS. 1 and 2, the ejector 24 has a second inlet 24b and an outlet 24c in addition to the first inlet 24a, which is dissolved in the second inlet 24b. One end of the dissolved water supply pipe 28 connected to the water supply pump 26 is connected, and one end of the mixture supply pipe 30 is connected to the discharge portion 24c.

In the ejector 24, the connection line between the second inlet portion 24b and the discharge portion 24c forms a venturi tube, and the first inlet portion 24a is preferably formed in the nozzle portion.

However, the present embodiment is not limited thereto, and the cross-sectional areas of the second inlet portion 24b and the discharge portion 24c of the ejector 24 may be uniform.

As described above, one end of the mixture supply pipe 30 is connected to the discharge portion 24c of the ejector 24, and it is preferable that a spiral guide protrusion is formed on the inner wall of the mixture supply pipe 30.

The other end of the mixture supply pipe 30 is connected to the lower end of the ball tank 32 including a ball (ball) therein. The size of the ball embedded in the ball tank 32 is preferably uniform.

One end of the dissolution tank inlet pipe 34 is connected to the upper end of the ball tank (30).

In the present invention, the mixture supply pipe 30 may be connected to the upper end of the ball tank 32, the dissolution tank inlet pipe 34 may be connected to the lower end of the ball tank (30).

The other end of the dissolution tank inlet pipe 34 is preferably located near the dissolution tank bottom portion 36b through the dissolution tank 36. However, the present embodiment is not limited thereto, and the other end of the dissolution tank inlet pipe 34 may be located above the dissolution tank 36.

The dissolution tank 36 includes a dissolution tank ceiling portion 36a, a dissolution tank side portion 36c, and a dissolution tank bottom portion 36b, and the dissolution tank bottom portion 36b is preferably naturally connected to the dissolution tank side portion 36c in a curved manner.

In the dissolution tank 36, the stirring shaft 40 driven by the stirrer 38 is extended to the vicinity of the dissolution tank bottom part 36b. The stirring shaft 40 is installed inside the cylindrical impeller guide 44, and the impeller 42 for preventing precipitation is installed inside the impeller guide 44. The impeller guide 44 is installed on the impeller support (not shown) or directly on the melting tank bottom 36b. In any case, the mixture introduced through the upper part of the impeller guide 44 is passed through the lower part of the impeller guide 44. The guide vane 46 to be described later to flow out to the installation portion.

Outside the impeller guide 44, a guide vane 46 of a predetermined height is installed at the bottom of the dissolution tank 36b. Referring to Fig. 5, the guide vane 46 is preferably vortex when viewed from the dissolution tank ceiling 36a, but may be straight.

1 and 2, the stirring shaft 40 is provided with an upper impeller 48 in the upper portion of the impeller guide 44.

On the other hand, the dissolved water supply pipe 28 and the air / coagulant supply pipe 22 are connected to the ends of the washing pipe 50, respectively, and the washing pipe 50 is provided with a washing valve 50a. The point where the washing tube 50 penetrates the air / coagulant feed tube 22 is preferably close to the moisture blocking means 20.

Further, both ends of the bypass pipe 52 are connected to the dissolved water supply pipe 28 and the dissolution tank 36, and the bypass pipe 52 has a bypass valve 52a.

Hereinafter, the operation of the flocculant dissolving apparatus according to the above embodiment will be described.

Referring to Figure 2, the flocculant is introduced into the coagulant supply cylinder 12a through the conical lower end of the coagulant storage hopper 10, the screw conveyor (12b) is rotated as the screw conveyor drive shaft 13 is rotated The coagulant is supplied to the vortex generator 14.

Referring to FIG. 4A, as the blower 18 operates, air flows into the vortex generator 14 through the air supply pipe 16 to generate the vortex. The vortices generated in the vortex generator 14 disperse the coagulant introduced by the screw conveyor 12b in a state of uniform density of dust to supply air and the coagulant to the moisture blocking means 20.

The air and the coagulant introduced into the moisture blocking means 20 rotate the moisture blocking plate 20b in the advancing direction of the air and the coagulant by pressure to block the air vent 20c, and the air passes through the moisture blocking means 20. It flows into the coagulant supply pipe 22.

1 and 2, the air and the flocculant flow into the first inlet 24a of the ejector 24 through the air and the coagulant supply pipe 22. As shown in FIG.

On the other hand, the dissolved water for dissolving the flocculant flows into the dissolved water supply pipe 28 by the operation of the dissolved water supply pump 26, the dissolved water flowing into the dissolved water supply pipe 28 is the second inlet of the ejector 24 Flows into 24b.

Since the extension line of the second inlet portion 24b and the discharge portion 24c of the ejector 24 forms a venturi tube, the pressure of the nozzle portion is lowered, so that air and coagulant are rapidly increased from the first inlet portion 24a located in the nozzle portion. The mixture of air, flocculant, and dissolved water flows into the discharge part 24c.

The air, the flocculant, and the dissolved water mixture pass through the discharge portion 24c and through the mixture supply pipe 30. Since the mixture supply pipe 30 has a spiral protrusion formed therein, the air, the flocculant and the melted water mixture form a vortex, so that the flocculant is made into smaller particles and the contact area with the melted water is increased so that the solubility of the flocculant is increased. do.

Since the air, the flocculant, and the dissolved water mixture passed through the mixture supply pipe 30 collide with the ball while passing through the ball tank 32, the finer of the flocculant is further promoted and the number of collisions with the water molecules increases, so that the solubility is further increased. do.

The air, the flocculant, and the dissolved water mixture are introduced into the dissolution tank bottom portion 36b through the dissolution tank inlet pipe 34 through the ball tank 32.

On the other hand, as the stirrer 38 operates, the stirring shaft 40 rotates, and thus the precipitation preventing impeller 42 fixed to the stirring shaft 40 rotates.

When the precipitation preventing impeller rotates, the flocculant and the dissolved water mixture flows out of the impeller guide 44 through the lower end of the impeller guide 44, and into the inside of the impeller guide 44 through the upper end of the impeller guide 44. A flocculant and dissolved water mixture is introduced.

The flocculant and melted water mixture which flows out of the impeller guide 44 through the lower end of the impeller guide 44 passes along the helical guide vane 46 installed outside the impeller guide 44 to dissolve the tank bottom 36b. It moves from the upper part of the dissolution tank via the dissolution tank side part 36c. The flocculant and the dissolved water mixture moved to the upper part of the dissolution tank are again introduced into the impeller guide 44 through the upper end of the impeller guide 44.

That is, as the precipitation preventing impeller 44 rotates near the bottom of the dissolution tank 36b, the coagulant continues the "U" shaped flow with the stirring shaft 40 as the center, thereby preventing the coagulant from settling to the bottom. . In addition, since the distal end of the dissolution tank inlet pipe 34 is located at the bottom of the dissolution tank 36b, the coagulant in the dissolution tank inlet pipe 34 flows into the point where the “U” -shaped flow is actively performed, so that the solubility of the dissolution tank inlet pipe 34 is increased. It can increase.

In addition, since the upper impeller 48 installed on the upper portion of the ampeller guide 44 rotates to increase the number of dusting of the flocculant and the collision with the water molecules, the solubility of the flocculant increases.

On the other hand, when the dissolved water is insufficient in the dissolution tank 36, the bypass valve 52a is opened so that the water supply is made quickly through the bypass pipe 52.

The operation at the time of stopping the flocculant supply will be described.

Referring to FIG. 4A, the vortex generator 14 is operated for a predetermined time even after the operation of the coagulant feeder 12 is stopped so that the coagulant introduced into the vortex generator 14 is absorbed by the moisture blocking means 20 and the air / coagulant supply pipe 22. It flows into the ejector 24 via the.

1 and 2, when the flocculant feeder 12 is stopped, the washing valve 50a of the washing tube 50 is opened to dissolve the water into the air / coagulant supply tube 22 from the washing tube 50. The coagulant remaining in the lower part of the air / coagulant supply pipe 22 and the first inlet 24a of the ejector 24, and when the coagulant feeder 12 is operated through the outlet 24c of the ejector 24, Similarly, the flocculant is supplied to the dissolution tank 36.

When all the flocculant supplied to the vortex generator 14 is supplied to the dissolution tank 36, the blower 18 which produces a vortex to the vortex generator 14, and the melted water supply pump 26 are stopped.

Referring to FIG. 4B, when the vortex generator 14 is stopped, the moisture barrier plate 20b rotates toward the vortex generator 14 to block the vortex generator 14 from the air / coagulant supply pipe 22 and Opening the vent 20c prevents water vapor rising from the air / coagulant supply pipe 22 from flowing into the vortex generator 14 and flows out into the atmosphere.

On the other hand, referring to Figures 1 and 2, when the operation stops for a long time, the bypass valve 52a is opened to remain in the ejector 24, the mixture supply pipe 30 and the ball tank 32 through the bypass pipe 52. Allow the dissolved water to drain.

As described above, one embodiment according to the present invention has been described, but the present invention is not limited to the above embodiment.

In the above embodiment, the upper portion of the coagulant storage hopper 10 is cylindrical and the lower portion is conical, but in other embodiments, the upper portion may be hexahedral and the lower portion may be tetrahedral.

In the above embodiment, the coagulant feeder 12 includes a screw conveyor. In another embodiment, the coagulant generator 14 has a predetermined amount of coagulant in contact with the gear rotating at a constant speed and the teeth of the gear at a predetermined point. And a device that returns to its original position upon separation from the contacted tooth.

The embodiment includes the moisture blocking means 20, but another embodiment may not include the moisture blocking means 20.

In the above embodiment, the spiral guide protrusion is formed on the inner wall of the mixture supply pipe 30, but in another embodiment, the guide protrusion may be formed in an oblique shape or may not be formed at all.

The embodiment includes the mixture supply pipe 30 and the ball tank 32 and the dissolution tank inlet pipe 34, but other embodiments may include only one, both, or none of them. have.

Although the dissolution tank bottom portion 36b forms a curved portion in one embodiment, the other embodiment may not form a curved portion.

One embodiment includes an impeller guide 44 and a guide vane 46, but another embodiment may include only one of the impeller guide 44 and the guide vane 46, or none of them.

The embodiment includes a precipitation preventing impeller 42 and an upper impeller 48, another embodiment may include only one of the precipitation preventing impeller 42 and the upper impeller 48.

While one embodiment includes a washing tube 50, another embodiment may not include the washing tube (50).

While one embodiment includes a bypass tube 52, another embodiment may not include a bypass tube 52.

The present invention evenly disperses the flocculant by the vortex generator and provides the ejector, the mixture supply pipe and the ball tank so that the flocculant is evenly mixed and dissolved in the dissolved water. In addition, the present invention by installing the impeller guide and the guide vane in the dissolution tank and the bottom of the dissolution tank to be curved so that the solubility of the solution in the dissolution tank can be maintained uniformly.

On the other hand, the present invention provides a washing tube to remove the flocculant in the flocculant dissolving device after the supply of the flocculant stops, and to provide the moisture blocking means to discharge the water vapor flowing from the dissolution tank into the atmosphere, the coagulant remains in the flocculant dissolving device to solidify and It solidifies to prevent failure of the flocculant dissolution unit.

Claims (10)

A flocculant storage hopper for temporarily storing the flocculant, A coagulant feeder having one end connected to the coagulant storage hopper, A vortex generator connected to the other end of the coagulant feeder; An air / coagulant supply pipe connected to the vortex generator and one end thereof; Dissolved water supply pump for supplying dissolved water in which the flocculant is dissolved, A dissolution water supply pipe having one end connected to the dissolution water supply pump; An ejector including a first inlet connected to the other end of the air / coagulant supply pipe, a second inlet connected to the other end of the dissolved water supply pipe, and a discharge part; A mixture supply pipe having one end connected to the discharge part of the ejector; A coagulant dissolving apparatus comprising a dissolution tank including a stirring shaft driven by a stirrer and an impeller installed on the stirring shaft. The method of claim 1, The ejector is a flocculant dissolving apparatus, characterized in that the connecting line of the second inlet and the discharge portion forms a venturi tube. The method according to claim 1 or 2, The mixture supply pipe is a coagulant melting apparatus, characterized in that the spiral guide projection formed therein. The method according to claim 1 or 2, The other end of the mixture supply pipe is a coagulant dissolving apparatus, characterized in that the ball tank having a ball (ball) connected therein. The method of claim 3, The other end of the mixture supply pipe is a coagulant dissolving apparatus, characterized in that the ball tank having a ball (ball) connected therein. The method of claim 5, Between the vortex generator and the air and coagulant supply pipe is further installed a moisture blocking means, The moisture blocking means includes a moisture blocking plate which opens between the vortex generator and the air / coagulant supply pipe when the vortex generator is in operation, and closes the vortex generator and the air / coagulant supply pipe when the vortex generator is not in operation. A flocculant dissolving apparatus characterized by the above-mentioned. The method of claim 6, The moisture blocking means, And an air vent open in the atmosphere between the moisture barrier plate and the one end of the air / coagulant supply pipe. The method of claim 7, wherein The bottom of the dissolution tank is naturally connected to the side portion and the curved portion, And the impeller is installed near the bottom of the dissolution tank. The method of claim 8, The stirring shaft is installed inside the cylindrical impeller guide, The impeller is installed inside the impeller guide, Outside the impeller guide guide vanes of a predetermined height are installed on the bottom of the melting tank, A flocculant dissolving apparatus, characterized in that the upper impeller is further installed on the impeller. The method of claim 9, A disintegrating agent dissolving apparatus further comprising a washing tube having both ends connected to the dissolved water supply pipe and the air / coagulant supply pipe and having an on / off valve.