JP3216445B2 - Melting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a melting device. More particularly, the present invention relates to a dissolving apparatus that can easily dissolve powdered drugs, granules, tablets, and powdered powders.

[0002]

2. Description of the Related Art For example, as a drug used for adjusting a dialysate, there are a drug in which sodium bicarbonate or the like is made into a concentrated solution, and a powder drug which is made into a powder or granules. Is filled in a hard container, and the powdered drug is commercially available in a hard container or a flexible polyethylene bag. Examples of a dissolving method for adjusting the dialysate from the dialysate drug include a method of dissolving the concentrated solution and water by mixing and a method of dissolving the powdered drug with water.

[0003]

However, when the concentrated solution is dissolved, for example, by dissolving a concentrated solution of sodium bicarbonate to prepare a bicarbonate dialysate, the concentration of the concentrated solution is close to the saturation point. Therefore, there is a problem that it is difficult to efficiently dissolve in a short time by the manual stirring using the stirring mechanism or the mixing blade. For this reason, depending on the hospital, the temperature of the dilution water for dissolution may be raised to about 30 ° C. in advance to facilitate dissolution, or the concentration of the concentrated solution may be reduced to about half in the same manner as described above to facilitate dissolution. When making the dialysate, the mixing ratio of sodium bicarbonate is changed.
However, the former method requires heating equipment. Also, in the latter method, it is necessary to prepare twice the amount of liquid as compared with the conventional method, which is a problem for hospitals that cannot afford storage facilities.

In the case of the above-mentioned powdered drug, the powdered drug for dialysate is put into a dissolving tank, and then water is added to the powdered drug to dissolve it with a stirring rod or the like by hand.
Complete dissolution is a very laborious task,
It takes a long time to make the dialysate. Also, instead of dissolving with a stirring rod, a method using a circulating pump provided so as to circulate in the tank cannot be completely dissolved as described above.

On the other hand, there is a method of dissolving the mixed solution in the dissolving tank by turning it with a motor-driven propeller instead of these. When the propeller is lowered from the tank, undissolved powder remains just below the center of the propeller. In either case, the mechanism can be improved, but the structure tends to be complicated, so that simple maintenance cannot be performed and the cost tends to be high.

[0006] Furthermore, a method of circulating and dissolving using a centrifugal pump used in a hemodialysis apparatus has been proposed. However, even in this method, undissolved powder remains in a portion of the tank bottom where liquid flow is small, and it is quite difficult. There is a problem that it takes time to prepare the dialysate because it does not dissolve.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a dissolving apparatus which can easily dissolve a drug such as a powder and can shorten the time for the dissolving operation. And

[0008]

A dissolving apparatus according to the present invention comprises a dissolving tank in which purified water for dissolving is to be stored, a rotatable support at the center of the bottom of the dissolving tank, and a radial lower part. A radiant flow generator having a passage, a first pipe for connecting a side portion of the dissolving tank and a peripheral position of the bottom portion via a circulation pump, and generating a vortex in the dissolving tank; A melting device comprising a circulation pump and a second pipe connecting the lower part of the radiation flow generator.
The eddy current on the outer peripheral surface of the radiation flow generator.
It is characterized in that a blade rotating by the flux is attached .

[0009]

[0010]

Further, it is preferable that a liquid jet pipe having a plurality of jet nozzles facing the bottom of the dissolving tank is attached to the radiation flow generator.

Further, it is preferable that the blades are attached to each other in a wedge shape.

[0013]

According to the dissolving apparatus of the present invention, while circulating purified water in the dissolving tank with a circulation pump, a circumferential vortex and a radial centrifugal liquid flow are generated in the dissolving tank. Drugs and the like can be sufficiently dissolved in a short time.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a dissolving apparatus according to the present invention.

FIG. 1 is a partial cross-sectional view showing an embodiment of the melting apparatus of the present invention, FIG. 2 is a partially cutaway perspective view of a radiation flow generator and a supporting portion in FIG. 1, and FIG. FIG. 4 is a partial cross-sectional view showing another embodiment, FIG. 4 is a cross-sectional view of the melting apparatus in FIG. 3, and FIG. 5 is an explanatory view showing attachment of two blades in the melting apparatus of the present invention.

As shown in FIG. 1 and FIG.
Is a circulating pump that connects a cylindrical melting tank 2, a triangular pyramid-shaped radiation flow generator 4 supported at the center of the bottom 3, and a side 5 of the melting tank 2 and a position around the bottom 3. 6
And a second pipe 8 connecting the circulating pump 6 and a lower part of the radiation flow generator 4. The upper opening of the dissolving tank 2 is provided with a lid having two recesses formed in the center thereof.

The radiant flow generator 4 is rotatably supported on a support portion 9 composed of an upper lid 9a and a lower lid 9b assembled from both sides of a hole formed in the bottom portion 3.
The support portion 9 has a plurality of inflow windows 10 on its upper lid 9a.
And the inflow path 11 is formed in the pillar 9c. A screw shaft 13 passed through the through hole 4a of the radiation flow generator 4 is fitted into the cylindrical projection 12 formed on the upper lid 9a with a clearance in the axial direction. An annular passage 14 is formed on the inner bottom surface of the radiation flow generator 4.

The first pipe 7 comprises an outflow pipe 7a and an inflow pipe 7b. The outflow pipe 7a is fixed to an outflow port 15 formed in the side part 5 by welding or screwing. On the other hand, the inflow pipe 7b is inserted in a liquid-tight state into a first inflow port 16 formed in the bottom portion 3, and its injection port 17 is directed in the circumferential direction (tangential direction) in the melting tank 2. ing. The circulation pump 6 connected to the outflow pipe 7a and the inflow pipe 7b is not particularly limited in the present invention.

The second pipe 8 has one end extending from the inflow pipe 7b and the other end fixed to a second inlet 18 formed in the lower lid 9b in a liquid-tight manner.
Although the second pipe 8 is extended from the inflow pipe 7b, it can be directly extended from the circulation pump 6.

The pipe diameter of the inflow pipe 7b and the second pipe 8 from the circulation pump 6 to the inlets 16 and 18 depends on the flow in the dissolving tank 2, for example, the vortex flow from the injection port 17 and the radiation flow generator 4. Can be appropriately selected in consideration of the flow velocity in the centrifugal direction, and the diameter of the pipe to the inflow port 16 is, for example, about 5 to 40 mm, preferably 20 to 40 mm.
The diameter of the pipe to the inlet 18 is about 30 mm.
About 40 mm, preferably about 5 to 20 mm.

Next, an example of use of the melting apparatus 1 of the present invention will be described.

First, purified water W for dissolution is placed in the dissolution tank 2.
Is stored to a position higher than the outlet 15. Then, the circulation pump 6 is operated to suck the purified water in the dissolution tank 2 from the outflow pipe 7a and distribute and circulate the same to the inflow pipe 7b and the second pipe 8. When the powdered medicine is put into the dissolving tank 2 in this state, a dead space where there is almost no liquid flow is likely to be generated at the center of rotation, so that undissolved powder tends to collect on the radiation flow generator 4. However,
By making the radiation flow generator 4 into a triangular pyramid shape, the powder is easily deposited around the lower part of the radiation flow generator 4. The deposited powder is evenly dissolved in the vortex jetted from the injection port 17 by the liquid flow heading in the centrifugal direction from the inner surface of the radiation flow generator 4 and dissolved. In addition,
Since the radiant flow generator 4 is rotatably supported by the bottom 3, it rotates slightly following the liquid flow in the dissolving tank 2, so that the radiant flow generator 4 has an extra part in the support 9 of the radiant flow generator 4. Load is difficult to apply.

Next, another dissolving apparatus of the present invention will be described.

As shown in FIG. 3 and FIG.
Reference numeral 1 denotes a blade 22 to the radiation flow generator 4 in the melting apparatus 1.
Is attached.

The blade 22 is rotatable so as not to interfere with the tip of the inflow pipe 7b, and also to generate a vortex in the central region of the melting tank 3.
Is mounted on the conical outer peripheral surface 4a. This feather 2
2 rotates by the vortex flux of the liquid flowing from the injection port 17 in the direction of arrow A shown in FIG. Due to the rotation of the blade 22, the rear part of the injection port 17 (the side opposite to the liquid flux direction A)
A uniform flux can be maintained even in a place where the flow velocity tends to decrease. As a result, a uniform vortex can be created in the melting tank 2.

The rotation speed of the blade 22 can be reduced with respect to the liquid vortex by the radiation flow generator 4 and the blade 22 having appropriate weights, and the flow of the vortex can be changed by the mounting angle of the blade 22. . Thereby, the flow velocity toward the bottom 3 of the melting tank 2 can be changed. Also, as shown in FIG.
When the blades 24 are mounted in a wedge-shaped step, the liquid jetted toward the wide blades 24 flows between the blades 22, 24. Thereby, the blade 2
Since the gap between 2 and 24 gradually narrows, the linear velocity of the liquid toward the bottom surface further increases, and the powder deposited on the bottom 3 of the dissolution tank 2 can be easily dissolved.

Next, still another melting apparatus of the present invention will be described.

As shown in FIG. 3 and FIG.
Reference numeral 1 denotes a liquid jet pipe 42 attached to the radiation flow generator 4 in the melting device 21.

The liquid ejection pipe 42 has an elongated cylindrical shape, and a plurality of ejection nozzles 43 are formed in the bottom portion 3 in the axial direction.
It is formed toward. The number, the nozzle diameter, the nozzle inclination angle, and the like of the injection nozzles 43 can be appropriately selected. The inside 42 a of the liquid ejection pipe 42 is communicated with the passage 14 of the radiation flow generator 4. Therefore, in addition to the liquid flow jetted downward by the rotating blades 22, the liquid flow jetted from the jet nozzle 43 causes the eddy current from the jet port 17 and the liquid flow in the centrifugal direction from the radiation flow generator 4. The powder that tends to remain in the confluent region is uniformly poured into the vortex to further improve the dissolving efficiency.

In the present invention, the position of the outlet provided in the melting tank can be appropriately selected depending on the amount of the solution to be prepared and the time for making the concentration of the solution uniform. That is, considering the pump head shaving due to the inflow of undissolved powdered drug crystals into the circulating pump, it is desirable to be as high as possible above the tank. In this case, a certain amount or more must be produced. However, in order to speed up the uniformity of the concentration of the solution in the large-capacity tank, it is preferable to provide a liquid outlet above.

On the other hand, when the amount of liquid production is small, a pipe can be provided from the outlet to the tank bottom side. If the time for concentration uniformity is not required without concern for pump shaving, the position of the outlet may be the lower side surface of the tank.

[0032]

As described above, according to the dissolving apparatus of the present invention, since purified water is circulated in the dissolving tank to generate a vortex and a flow in the centrifugal direction, it is possible to efficiently dissolve powdered chemicals and the like. And the dissolution time can be reduced.

Further, the dissolving operation can be performed smoothly by a simple system in which a slight modification is made to the ready-made tank.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing one embodiment of a melting apparatus of the present invention.

FIG. 2 is a partially cutaway perspective view of a radiation flow generator and a support part in FIG. 1;

FIG. 3 is a partial sectional view showing another embodiment of the melting apparatus of the present invention.

FIG. 4 is a cross-sectional view of the melting device in FIG.

FIG. 5 is an explanatory diagram showing attachment of two blades in the melting apparatus of the present invention.

[Explanation of symbols]

 Reference numerals 1, 21, 41 Dissolution apparatus 2 Dissolution tank 3 Bottom part 4 Radiation flow generator 5 Side part 6 Circulation pump 7 First pipe 8 Second pipe W Purified water for dissolution

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-76744 (JP, A) JP-A-5-103962 (JP, A) Japanese Utility Model Application No. 58-23626 (JP, U) Japanese Utility Model Utility Model No. 3- 123589 (JP, U) JP-A 57-173828 (JP, U) JP-A 53-10261 (JP, Y2) JP 5-19068 (JP, Y2) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B01F 1/00-5/26

Claims (3)

(57) [Claims] 1. A dissolving tank for storing purified water for dissolving, a radiant flow generator rotatably supported at the center of the bottom of the dissolving tank and having a radial passage below the dissolving tank, A side pipe of the tank and a peripheral position of the bottom are connected via a circulation pump, and a first pipe for generating a vortex in the melting tank, and a lower part of the circulation pump and the radiation flow generator. And a second pipe connecting the radiating flow generator and the radiating flow generator.
A blade rotating by the vortex flux is attached to the peripheral surface.
Dissolution apparatus characterized by vignetting composed. Wherein said radial flow to the generator, dissolution tank a plurality of injection nozzles formed by the liquid jet pipe is attached which is formed according to claim 1 dissolution apparatus according facing the bottom of the. Wherein the blade dissolution apparatus according to claim 1 or 2 wherein becomes attached to two superimposed wedge-shaped.