JPH078771A - Method and device for mixing and dissolving powder - Google Patents

Abstract

PURPOSE:To provide a powder mixing-dissolving device for preparing solution of given concentration in which the consumption of powder can be minimized. CONSTITUTION:A powder storing body 2 and a mixing-dissolving cylindrical body 3 are disposed on the upper side and lower side, and a power outlet 7a is opened at the lower section of the powder storing body 2, while an upper end opening of the cylindrical body 3 is located below the powder outlet 7a, and a water introduction pipe 12 for introducing water from the outside is attached on the cylindrical body 3. An end opening of the water introduction pipe 12 is opened toward the direction along the inner peripheral face of the cylindrical body 3, and a lower end peripheral wall 11 is formed on the lower side of the water introduction pipe 12 on the inner peripheral face of the cylindrical body 3, while the lower end opening of the lower side peripheral wall 11 is made to communicate with the lower end opening of the cylindrical body 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mixing powders, particularly powders which are difficult to dissolve, into a liquid and dissolving them, and an apparatus used therefor.

[0002]

2. Description of the Related Art Generally, a polymer flocculant is used for cleaning waste water and the like. This flocculant is difficult to dissolve in liquids such as water and has the property of easily clumping.Therefore, use a water flow generated by stirring with a stirrer, etc. and sprinkle the flocculant into this water flow to dissolve it. However, it was difficult to sufficiently mix and dissolve them. Therefore, as a device for facilitating the mixing and dissolution of such an aggregating agent, the following dissolution devices are available. This melting device is shown in FIG.
As shown in FIG. 1 and FIG. 12, an upper body 20 and a lower body 21 are vertically arranged and fixed. The upper main body 20 is a storage unit 2 for storing the powdery polymer coagulant 1.
2 and a slide plate 23 slidably attached to the fitting frame body 20a that hangs down from the lower end portion, and the powder outlet 22a provided at the lower end of the accommodating portion 22 is provided by the sliding movement of the slide plate 23. It has a structure that can be opened and closed. On the other hand, on the inner surface of the lower body 21, the left side wall 21a
A first inclined plate 24 extending downwardly from the upper end of the to the center is attached, and the right side wall 21 of the first inclined plate 24 is attached.
The second extending upwardly from the inclined surface of b toward the outside
An inclined plate 26 is attached. A water conduit 25 is attached to the right side wall 21b of the lower body 21 at a position facing the second inclined plate 26. In FIG. 11, 27 is a lid, 28 is a plate that suppresses the force of tap water that overflows the second inclined plate 26, and 29 is an outlet. Further, in FIG. 12, reference numeral 30 is a pair of left and right mounting plates in which two bolt insertion holes 30a are formed.

When the coagulant 1 accommodated in the accommodating portion 22 of the upper main body 20 is dissolved in tap water using the above-mentioned dissolving device, first, as shown in FIG.
A space 31 which is introduced into the lower main body 21 from the inside and is surrounded by the second inclined plate 26, the right side wall 21b, and the front and rear side walls (not shown).
After filling the inside with tap water, it is made to overflow from this space 31 (see the arrow in FIG. 13). As a result, the tap water overflowing from the space 31 linearly flows down on the second inclined plate 26 and then linearly flows down on the inclined surface of the right side wall 21b. On the other hand, the slide plate 23 is slid to the right to open the powder outlet 22a of the container 22. As a result, the coagulant 1 in the storage portion 22 is transferred from the powder outlet 22a to the first inclined plate 2
4 and slides down the first inclined plate 24, and then drops downward from the lower end of the first inclined plate 24, and linearly flows down on the second inclined plate 26 and the inclined surface of the right side wall 21b. Falls on tap water. The coagulant 1 thus dropped onto the tap water is mixed and dissolved in the tap water, and the tap water is taken out through the outlet 29 (for example, in the tank).

[0004]

However, in the above-mentioned dissolving apparatus, the coagulant 1 is on the second inclined plate 26 and the right side wall 21.
When it falls on tap water that linearly flows down on the inclined surface of b, the first inclined plate 24 and the second inclined plate 2 are operated by some action.
6 When the dots adhere to the upper surface and the inclined surface of the right side wall 21b, the coagulant 1 easily adheres to the dots and gradually rises, and spreads to the periphery to form islands. Become. Therefore, it is very difficult to mix and dissolve a certain amount of powder in tap water to form a solution having a predetermined concentration. In addition, as described above, when the coagulant 1 adheres to the second inclined plate 26 and the inclined surface of the right side wall 21b in an island shape, the consumption of the coagulant 1 is large and maintenance must be performed frequently. There is also the problem of not becoming. Further, the second inclined plate 26 of the lower body 21
If the upper end surface of the second inclined plate 26 is not exactly horizontal, tap water that overflows the upper end surface of the second inclined plate 26 and overflows does not flow down uniformly on the second inclined plate 26. In addition, it is more difficult to make the structure, and the leveling of the second inclined plate 26 must be ensured with high accuracy during the assembling work.

The present invention has been made in view of the above circumstances, and provides a powder mixing and dissolving method which can easily prepare a solution having a predetermined concentration and consumes less powder, and an apparatus used therefor. Is its purpose.

[0006]

In order to achieve the above object, the present invention provides a mixing and melting tubular body having an inner peripheral surface formed in a substantially funnel shape, and the inner peripheral surface of the tubular body. A liquid is introduced into the upper part of the cylinder from the side to generate a vortex flow inside the cylindrical body while rotating spirally along the inner peripheral surface, and the powder is dropped from above into the vortex flow. The first gist is the powder mixing and melting method in which the powder is mixed with the powder container and the mixing and dissolving tubular body are arranged vertically, and the powder outlet is opened at the bottom of the powder container. The upper end opening of the tubular body is located below the powder outlet, and a liquid inlet portion for introducing a liquid from the outside into the inside is provided in the tubular body. Opening toward the direction along the inner peripheral surface of the cylindrical body, in the lower portion of the liquid inlet of the inner peripheral surface of the cylindrical body, Forming a funnel-shaped inclined surface, the powder mixed dissolution apparatus which communicates the lower end opening of the inclined surface to the lower end opening of the tubular body and the second aspect.

[0007]

In other words, the powder mixing and dissolving method of the present invention introduces liquid from the side into the upper part of the inner peripheral surface of the mixing and melting cylindrical body whose inner peripheral surface is formed in a substantially funnel shape. In the inside of the cylindrical body, a vortex flow is generated that flows down while rotating in a spiral shape along the inner peripheral surface, and powder is mixed into the vortex flow by dropping it from above. As described above, when the powder is mixed and dissolved in the liquid by utilizing the vortex flow generated inside the tubular body, the powder is liquified by the water flow flowing down while rotating in a spiral and the turbulent flow that occurs moderately. It becomes easy to mix and dissolve in it, and it hardly becomes an island shape and adheres to the inner peripheral surface of the cylindrical body. Therefore, it becomes easy to mix and dissolve a certain amount of powder in the liquid to form a solution having a predetermined concentration. Further, as described above, since the powder does not adhere to the inner peripheral surface of the cylindrical body in the form of islands, the consumption of the powder is reduced and the number of maintenances is extremely small. On the other hand, according to the powder mixing and melting apparatus of the present invention, the method of the present invention can be easily performed, there is no portion that must be assembled with high precision, and the assembling work is easy and labor-free. There are advantages.

Next, the present invention will be described in detail based on embodiments.

[0009]

1 shows an embodiment of the present invention. Reference numeral 2 denotes a cylindrical powder container, in which the powdery polymer coagulant 1 is contained. Reference numeral 3 denotes a mixing and dissolving tubular body attached to the lower part of the powder container 2, into which tap water is introduced from the side to generate a vortex, and the vortex creates an agglomeration in the powder container 2. Agent 1 is sprayed from above.

More specifically, the powder container 2 described above is used.
As shown in FIGS. 2 and 3, a support rod (or a pipe) 4 having a support fitting 5 attached to the central portion is provided on the inner peripheral surface of the cylindrical outer cylindrical body 2a in a state of traversing the left and right. Along with the bridge, an inner cylindrical body 7 having a conical cylindrical shape is provided below the support rod 4. Further, as shown in FIG. 4, a screw portion 5a is engraved in the vertical direction on the support fitting 5, and the screw portion 6b of the adjusting rod 6 is attached to the screw portion 5a.
They are in conflict. A cone-shaped valve body 6a is formed in the lower portion of the adjusting rod 6, and the lower end opening (powder outlet) 7a of the inner cylindrical body 7 can be closed by the valve body 6a.

As shown in FIG. 5, the mixing and dissolving tubular body 3 has a cylindrical upper peripheral wall 10 and a conical tubular lower peripheral wall 11 extending integrally from the lower end of the upper peripheral wall 10. A flange portion 14 attached to the lower end opening 11a of the lower side peripheral wall 11 and having an outflow port 14a formed in the center portion is formed into a substantially funnel shape. The water conduit 1 is provided on the upper peripheral wall 10.
2 is attached in a penetrating manner, and as shown in FIG. 6, a front end opening 12a of the water guide tube 12 is opened in a direction along the inner peripheral surface of the upper peripheral wall 10. In addition, the upper peripheral wall 10
As shown in FIG. 7, a step portion 10a that is detachably engageable with the lower end portion of the outer cylindrical body 3 of the powder container 1 is formed on the outer peripheral surface of the upper end portion of On the circumference,
A collar portion 10b is formed to prevent tap water introduced from the water conduit 12 from splashing upward. In FIG. 2, 15
Is a water-sealing prevention hole formed in the outer cylindrical body 2a of the powder container 2, and by communicating the inside of the powder container 1 and the cylindrical body 3 with the outside air through this hole 15, a vortex The vortex flow is designed to be smooth even when the water volume changes.
Further, in FIG. 5, 13 is a rib.

In the above structure, when the powdery polymer coagulant 1 is dissolved in tap water, first, the powder outlet 7a of the inner cylindrical body 7 of the powder container 2 is connected to the valve body 6a of the adjusting rod 6. Block the inside of the powder container 2 with the coagulant 1
(See FIG. 1). Then, as shown in FIGS. 8 and 9, tap water is introduced into the tubular body 3 from the water conduit 12.
A swirl is generated in the cylindrical body 3 that flows down while rotating spirally along the inner peripheral surface of the cylindrical body 3 (see arrows in FIGS. 8 and 9). On the other hand, the adjusting rod 6 is rotated and lowered by an appropriate distance, and the powder outlet 7a of the inner cylindrical body 7 and the adjusting rod 6 are
A proper gap is formed between the valve body 6a and the valve body 6a, and the coagulant 1 is dropped from this gap. As a result, the coagulant 1 is sprinkled on the vortex, and is sufficiently mixed and dissolved in tap water due to the swirling water flow or turbulent flow that occurs appropriately, and the coagulant 1 is dispersed on the inner peripheral surface of the tubular body 3. It does not adhere as a lump. The tap water in which the coagulant 1 is mixed and dissolved in this way is taken out into the tank or the like through the outflow port 14a of the flange portion 14.

According to the above apparatus, tap water is introduced into the cylindrical body 3 to generate a vortex, and the coagulant 1 is mixed and dissolved in the tap water by using this vortex, so that the coagulant 1 is sufficiently dissolved in the tap water. It can be mixed and dissolved, and an aqueous solution having a predetermined concentration can be easily obtained. Further, since the coagulant 1 does not adhere to the inner peripheral surface of the cylindrical body 3, the consumption amount can be small and the number of times of maintenance can be extremely small. Moreover, since the powder container 2 and the tubular body 3 do not require high precision, the manufacture thereof is simple and the manufacturing cost can be reduced.

In the above-mentioned embodiment, as the powder, the hardly soluble polymer flocculant 1 is used, but the present invention is not limited to this, and easily soluble powder may be used. Also,
Although the coagulant 1 is mixed and dissolved in tap water, the coagulant 1 or other powder may be mixed and dissolved in various liquids such as a chemical solution.

In the above embodiment, one powder container 2 is fixed on the cylindrical body 3. However, the present invention is not limited to this, and the powder container 2 may be a cartridge type. Alternatively, the cartridge type powder container 2 may be stacked in multiple stages. In this case, the storage amount of the coagulant 1 can be set appropriately.

In the above embodiment, the flange 14 is attached to the lower end of the tubular body 3 and the flange 14 is bolted to a tank or the like. However, the present invention is not limited to this. The lower end of 3 may be a socket type.

Further, in the above-mentioned embodiment, the powder container 2 and the cylindrical body 3 are separately manufactured to improve maintenance, but the present invention is not limited to this, and the powder container 2 is not limited thereto. And the tubular body 3 may be integrally formed.

Further, in the above-mentioned embodiment, the height of the adjusting rod 6 can be adjusted steplessly by engaging the threaded portion of the adjusting rod 6 with the threaded portion of the support fitting 5 provided on the supporting rod 4. However, the present invention is not limited to this, and the height of the adjusting rod 6 may be adjusted in multiple stages.

Further, in the above embodiment, the outflow port 14a is bored in the flange portion 14, but the present invention is not limited to this. The flange portion 14 is eliminated and the lower peripheral wall 11 of the tubular body 3 is removed. The lower end opening 11a may be the outlet.

Further, in the above embodiment, the water conduit 12 is made to project into the upper peripheral wall 10 of the tubular body 3.
The present invention is not limited to this, and as shown in FIG. 10, the water conduit 12 may be attached to the outer surface of the upper peripheral wall to prevent the tip opening 12a of the water conduit 12 from protruding into the upper peripheral wall 10. . In addition, the water conduit 12 is connected to the upper peripheral wall 10
Alternatively, it may be attached in a state of being directed in the tangential direction.

Further, in the above embodiment, the support metal fitting 5 in which the threaded portion 5a is engraved in the central portion of the support rod 4 or the pipe.
However, the present invention is not limited to this, and a threaded portion may be directly formed on the center portion of the support rod 4 or the pipe. Further, an elevating means other than a screw may be provided in the central portion of the support rod 4 or the pipe, and the elevating means may elevate the adjusting rod 6.

[0022]

As described above, according to the method of the present invention,
Since the powder is mixed and dissolved in the liquid by using the vortex flow generated inside the cylindrical body, the powder easily mixes and is dissolved in the liquid by the water flow flowing down while rotating in a spiral and the turbulence that occurs appropriately. As a result, there is almost no adhesion to the inner peripheral surface of the tubular body in a lump. Therefore, it becomes easy to mix and dissolve a certain amount of powder in the liquid to form a solution having a predetermined concentration. Further, as described above, since the powder does not adhere to the inner peripheral surface of the cylindrical body in the form of islands, the consumption of the powder is reduced and the number of maintenances is extremely small. On the other hand, according to the powder mixing and melting apparatus of the present invention, the method of the present invention can be easily performed, there is no portion that must be assembled with high precision, and the assembling work is easy and labor-free. There are advantages.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a powder container.

FIG. 3 is a plan view of the powder container.

FIG. 4 is a sectional view of a main part of the powder container.

FIG. 5 is an explanatory diagram of a tubular body.

FIG. 6 is a plan view of the tubular body.

FIG. 7 is a cross-sectional view of a main part of the tubular body.

FIG. 8 is an explanatory diagram showing the operation of the present invention.

FIG. 9 is an explanatory diagram showing the operation of the present invention.

FIG. 10 is a main-portion cross-sectional view showing a modified example of the tubular body.

FIG. 11 is an explanatory diagram showing a conventional example.

FIG. 12 is a plan view of a conventional example.

FIG. 13 is an explanatory diagram showing an operation of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flocculant 2 Powder container 3 Cylindrical body 6 Adjustment rod 7 Inner cylinder 7a Powder outlet 11 Lower peripheral wall 12 Water guide tube 12a Tip opening

Claims (2)

[Claims] 1. A cylindrical body for mixing and dissolution having an inner peripheral surface formed in a substantially funnel shape is prepared, and a liquid is introduced into the upper part of the inner peripheral surface of the cylindrical body from the side to thereby form the cylindrical shape. A powder mixing and melting method characterized in that inside the body, a vortex flow that flows down while rotating spirally along the inner peripheral surface is generated, and powder is mixed into the vortex flow by dropping powder from above. . 2. A powder container and a cylindrical body for mixing and dissolving are arranged vertically, a powder outlet is opened in a lower portion of the powder container, and an upper end opening of the cylindrical body is connected to the powder outlet. Located down,
The tubular body is provided with a liquid inlet portion for introducing a liquid from the outside into the tubular body, and the liquid inlet of the liquid inlet portion is opened in a direction along the inner peripheral surface of the tubular body to form the tubular body. Powder mixing, characterized in that a substantially funnel-shaped inclined surface is formed in the inner peripheral surface of the body below the liquid inlet, and the lower end opening of this inclined surface communicates with the lower end opening of the cylindrical body. Dissolution equipment.