JP2014240053A - Suction dissolution dispersion device of powder - Google Patents

Abstract

Disclosed is an apparatus for sucking, dissolving, and dispersing powder that enables a small amount of powder to be melted and dissolved by batch processing without wasting materials and without requiring a lot of work. A rotating blade is rotated to suck a substance to be treated from a first suction portion 21A into a first introduction chamber, pass through a throttle channel, and stirred by the rotating blade, and then passed through a discharge chamber. The material to be treated discharged from the discharge part is circulated to the second suction part 21B through the circulation flow path 32 and sucked from the second suction part into the second introduction chamber. Then, it passes through the throttle channel, is agitated by the rotor blades, and is discharged from the discharge part via the discharge chamber. The liquid raw material supply mechanism 33 of the material to be treated is disposed in the discharge pipe 31 connected to the discharge section, the upper portion of the discharge pipe 31 connected to the discharge section is opened to form a deaeration section 34, and the discharge A discharge portion 4 for the substance to be treated is formed in the lower part of the chamber. [Selection] Figure 1

Description

  The present invention relates to an apparatus for sucking, dissolving and dispersing powder.

  Conventionally, the present applicant, as a powder suction dissolution dispersion device, rotates a rotating blade, sucks a substance to be treated from a first suction portion into an introduction chamber, passes through a throttle channel, The mixture is agitated and discharged from the discharge portion via the discharge chamber, and the material to be treated discharged from the discharge portion is circulated to the second suction portion via the circulation flow path, and is introduced from the second suction portion to the introduction chamber. Has been put into practical use and has been put to practical use by allowing it to pass through a throttle channel, agitated by a rotary blade, and discharged from a discharge section through a discharge chamber (see Patent Documents 1 and 2). .

  By the way, the above-mentioned conventional powder dissolution / dispersion device for powders is based on continuous processing, and even in the case of batch processing, since it is intended for processing a large amount of processed products, When processing a processed material, there existed a problem that the waste of a material increased, and there existed a trouble in mixing | blending.

  In addition, since the conventional powder dissolution / dispersion apparatus for powder is based on continuous processing, the powder raw material supply mechanism connected to the first suction unit is not used when powder raw material is not supplied in batch processing. There has been a problem that the powder raw material supply pipe becomes wet and easily clogs.

  In addition, the conventional powder dissolution / dispersion apparatus for powder has a problem that the temperature of the material to be treated increases due to the power heat generated by the dissolution / dispersion process, and the powder tends to deteriorate.

JP 2006-281017 A JP 2011-88073 A

  In view of the problems of the above-mentioned conventional powder dissolution / dispersion apparatus, the present invention eliminates the waste of materials and requires a lot of time for blending the powder by a batch process. It is a first object of the present invention to provide an apparatus for sucking, dissolving and dispersing powder that enables the above.

  Further, the present invention can prevent the powder material supply pipe of the powder material supply mechanism connected to the first suction part from getting wet and clogging when the powder material is not supplied in batch processing. It is a second object of the present invention to provide an apparatus for sucking, dissolving and dispersing powder that can be produced.

  A third object of the present invention is to provide an apparatus for sucking, dissolving and dispersing powder, which can prevent the temperature of the substance to be treated from rising due to the motive heat generated by the dissolution and dispersion treatment, and the alteration. And

In order to achieve the first object, the suction / dissolution dispersion apparatus for powder of the present invention rotates a rotating blade to suck a substance to be treated from the first suction section into the introduction chamber and stirs it with the rotating blade. Then, while discharging from the discharge section through the discharge chamber, the material to be processed discharged from the discharge section is circulated to the second suction section through the circulation flow path, and the second suction section is transferred to the introduction chamber. In an apparatus for sucking and dissolving and dispersing powder, which is sucked, passed through a throttle channel, stirred by a rotary blade, and discharged from a discharge section through a discharge chamber, A supply mechanism is disposed in the first suction portion, a liquid raw material supply mechanism of the substance to be treated is disposed in the discharge portion, an upper portion of the discharge portion is opened to form a deaeration portion, and a discharge chamber A discharge portion for the substance to be treated is formed in the lower part.

  In order to achieve the second object, the powder suction dissolution and dispersion apparatus of the present invention includes a powder raw material supply pipe of a powder raw material supply mechanism, an outer pipe connected to the first suction portion, It has a double structure with the inner pipe slidably arranged in the outer pipe, and a shutter valve that can shut off the upstream side and the downstream side of the outer pipe is arranged. Open and advance the inner tube to supply the powder raw material from the inner tube through the outer tube. When the powder raw material is not supplied, the inner tube is retracted to close the shutter valve. To do.

  In order to achieve the third object, the powder suction dissolution and dispersion device of the present invention has a double structure in which the circulation channel is provided with a jacket portion, and supplies a coolant to the jacket portion. It is characterized by.

  According to the apparatus for sucking and dissolving powder of the present invention, the powder raw material supply mechanism of the substance to be treated is disposed in the first suction section, and the liquid raw material supply mechanism of the substance to be treated is discharged. Dispose of the upper part of the discharge part to form a deaeration part, and form a discharge part for the substance to be processed in the lower part of the discharge chamber. Dispersion processing can be made possible without wasting materials and without requiring a lot of time for blending.

  The powder raw material supply pipe of the powder raw material supply mechanism has a double structure of an outer pipe connected to the first suction portion and an inner pipe slidably disposed in the outer pipe. A shutter valve that can shut off the upstream side and the downstream side is provided, and when supplying the powder raw material, the shutter valve is opened to advance the inner pipe, and the powder raw material is supplied from the inner pipe through the outer pipe. At the same time, when the powder raw material is not supplied, the inner tube is retracted and the shutter valve is closed, so that when the powder raw material is not supplied in batch processing, the powder raw material connected to the first suction portion The powder raw material supply pipe of the supply mechanism can be prevented from getting wet and clogged, and at the same time, air can be prevented from being sucked from the first suction part.

  In addition, since the circulation flow path has a double structure with a jacket portion and a coolant is supplied to the jacket portion, the temperature of the substance to be treated rises due to power heat generated by the dissolution and dispersion treatment, and the quality of the material changes. Can be prevented.

It is explanatory drawing which shows one Example of the attraction | suction dissolution dispersion | distribution apparatus of the powder of this invention. It is explanatory drawing which shows the internal structure of the suction dissolution dispersion mechanism of the suction dissolution dispersion | distribution apparatus of the same powder.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a powder suction dissolution / dispersion device of the present invention will be described below with reference to the drawings.

  1 to 2 show an embodiment of a powder suction dissolution dispersion apparatus of the present invention.

This powder dissolution / dispersion device rotates the rotating blade 23A to suck the substance to be treated from the first suction portion 21A into the first introduction chamber 25A, and to form the through hole Sa as the throttle channel S. The material to be treated is stirred by the rotary blade 23A and discharged from the discharge part 22 through the discharge chamber 28, and the substance to be treated discharged from the discharge part 22 is passed through the circulation channel 32 to the second suction part 21B. It is circulated, sucked into the second introduction chamber 25B from the second suction portion 21B, passed through the through hole Sb as the throttle channel S, stirred by the rotary blade 23A, and discharged through the discharge chamber 28. In the apparatus for sucking and dissolving powder dispersed from 22, the powder raw material supply mechanism 1 of the substance to be treated is disposed in the first suction portion 21A, and the liquid raw material of the substance to be treated is disposed. A cylindrical storage container 33 serving as a supply mechanism is discharged. Disposed in the discharge pipe 31 connected to the section 22, the upper portion of the discharge pipe 31 of the discharge section 3 connected to the discharge section 22 is opened to form a deaeration section 34, and the discharge portion of the substance to be treated is formed in the lower portion of the discharge chamber 28. 4 is formed.

  The suction dissolution / dispersion mechanism 2 constituting the powder suction dissolution / dispersion device rotates the rotary blade 23A and sucks into the introduction chamber 25 (25A, 25B) from the suction portion 21 (21A, 21B). The substance is allowed to pass through the throttle channel S from the introduction chamber 25 and is agitated by the rotary blade 23A to be discharged from the discharge section 22 through the discharge chamber 28, and the target substance discharged from the discharge section 22 is circulated. It is circulated to the suction part 21 (21B) through the flow path 32 to apply a shearing force and a centrifugal force due to the rotation of the rotary blade 23A to the substance to be treated, and when the substance to be treated passes through the throttle channel S. By applying a negative pressure, the powder raw material is dispersed in the liquid raw material, and the solution dispersion treatment is performed.

  Further, as will be described later, the suction dissolution / dispersion mechanism 2 is a pump that handles liquid by preventing air from being sucked from the first suction part 21A when the powder raw material is not supplied in batch processing. In a fluid machine, the cavitation phenomenon, which is generally regarded as a problem of occurrence, is actively utilized in reverse, and the material to be treated is restricted by the shear flow and centrifugal force caused by the rotation of the rotary blade 23A. By causing a cavitation phenomenon when passing through S, the particles in the material to be treated collide and rub against each other while causing the particles in the material to be treated to rotate at high speed by the action of generation / disappearance of microbubbles. Compared with the conventional case of only stirring, the efficiency of the dissolution and dispersion treatment (including the polishing treatment of the surface of the particles in the material to be treated in this specification) is improved. So that it is.

By the way, in this powder suction dissolution / dispersion device, the powder raw material supply pipe of the powder raw material supply mechanism 1 is slidable in the outer pipe 11 and the outer pipe 11 connected to the first suction portion 21A. A double structure with the disposed inner pipe 13 is formed, and a hopper 12 for storing the powder raw material is integrally formed on the upstream side of the inner pipe 13, and the upstream side and the downstream side of the outer pipe 11 are connected to the outer pipe 11. A shutter valve 14 that can be shut off is provided.
When supplying the powder raw material, the shutter valve 14 is opened to advance the inner tube 13, and the powder raw material stored in the hopper 12 is supplied from the inner tube 13 to the first suction portion 21A through the outer tube 11. To do.
On the other hand, when the powder raw material is not supplied, the inner tube 13 is retracted (retracted hopper and inner tube are indicated by two-dot chain lines 12 ′ and 13 ′), and the shutter valve 14 is closed.
This prevents the powder material supply pipe of the powder material supply mechanism 1 connected to the first suction portion 21A from getting wet and clogging when the powder material is not supplied in batch processing. In addition, air can be prevented from being sucked from the first suction portion 21A.

  In the present embodiment, the hopper 12 for storing the powder raw material is integrally formed on the upstream side of the inner tube 13. However, the hopper 12 is formed by making the inner tube 13 extendable and contractible. It can also be a fixed structure.

The suction dissolution / dispersion mechanism 2 sucks the substance to be processed by the rotation of the rotary blade 23A, and after the suction is completed, closes the shutter valve 14 to prevent air from being sucked from the first suction portion 21A. A shearing force and a centrifugal force can be applied to the material to be treated, and an impact force generated by generating a cavitation phenomenon can be applied to perform a dispersion process (or polishing of the surface of particles in the material to be treated). However, in the present embodiment, a plurality of rotations are provided on the outer peripheral portion of the rotor 23 attached to the drive shaft of the drive mechanism M in the cylindrical casing 20. By projecting the blade 23A and rotating the rotor 23, the substance to be treated is sucked into the introduction chamber 25 from the suction part 21 and stirred, and the substance to be treated is discharged from the discharge part 22. It is configured so as to.

  In this case, the casing 20 includes a cylindrical casing body 20A and a front casing 20B disposed on the front side (left side in FIG. 2A) and rear side (right side in FIG. 2A) of the casing body 20A. The casing main body 20A is provided with a discharge portion 22 for discharging the material to be processed in the tangential direction of the casing main body 20A.

A cylindrical stator 24A is disposed in the front casing 20B so as to be positioned between the rotary blade 23A and the introduction chamber 25, and the throttle channel S is configured by through holes Sa and Sb formed in the stator 24A. Like to do.
The throttle channel S can be constituted by a slit or a nozzle in addition to the through hole.
Further, if necessary, a stator 24B in which a through hole (a slit-like long hole in the present embodiment) is formed as the throttle channel S can be disposed on the outer peripheral side of the rotary blade 23A.
Thus, the material to be treated is effectively generated by the pressure reducing action when the material to be treated passes through the through holes Sa and Sb (in this embodiment, the through hole Sb) formed in the stator 24A. Particles can collide and rub against each other while rotating the particles at high speed by the action of microbubble generation / disappearance in the solution. Compared with conventional stirring alone, dissolution and dispersion treatment efficiency (or polishing efficiency) ) Can be improved.

In addition, a funnel-shaped partition plate 26 is fixed to the rotor 23 via a plurality of bosses 26a inside the rotor blade 23A and further inside the stator 24A.
The partition plate 26 includes a first introduction chamber 25A into which a substance to be treated is introduced from the first suction part 21A of the suction part 21 and a substance to be treated discharged from the discharge part 22 into the second suction part. It circulates through 21B and partitions the second introduction chamber 25B to be introduced. The sliding portion between the partition plate 26 and the casing 20 has a step-like labyrinth structure, The material to be treated can be smoothly sucked into the introduction chamber 25A.
Note that the first introduction chamber 25A and the second introduction chamber 25B may be integrated by omitting the partition plate 26.

Here, since the introduction chamber 25 is divided into the first introduction chamber 25A and the second introduction chamber 25B, in this embodiment, as shown in FIG. 2B, the stator 24A The shape of the through holes Sa and Sb formed in the first and second introduction chambers 25B is opposed to the second introduction chamber 25B in such a manner that the through holes Sa facing the first introduction chamber 25A have a circular shape in which powder raw materials (particles in the material to be treated) are difficult to clog. The object to be treated that circulates through the through-hole Sb has a reduced pressure effect (the cavitation phenomenon is likely to occur), and the shear force and the centrifugal force by the rotary blade 23A are set to an oval shape that easily acts on the particles in the substance to be treated. Like to do.
The shapes of the through holes Sa and Sb can be arbitrarily set according to the shape and properties of the powder raw material (particles in the material to be treated).

  Further, a pressure gauge 6 for measuring the pressure in the introduction chamber 25 (introduction chamber 25A and / or introduction chamber 25B) is provided.

Further, an orifice 27 can be provided in the introduction portion of the introduction chamber 25 of the suction dissolution / dispersion mechanism 2.
In the present embodiment, the orifice 27 can be disposed in the introduction portion of the second introduction chamber 25B into which the material to be treated circulated from the circulation channel 32 is introduced.
By disposing the orifice 27, it is possible to perform primary pressure reduction of the material to be processed, and to assist the pressure reducing action when the material to be processed passes through the through holes Sb formed in the stator 24A. When passing through the through hole Sb formed in the stator 24A, the cavitation phenomenon can be generated more effectively.

A discharge pipe 31 is connected to the discharge portion 22 of the suction dissolution / dispersion mechanism 2, and a cylindrical storage container 33 serving as a supply mechanism for a liquid raw material of the material to be processed is connected to the upper end portion of the discharge pipe 31. The liquid raw material was discharged from the discharge unit 22 by operating the suction dissolution and dispersion mechanism 2 in a state where the liquid raw material was stored in the storage container 33. It is made to circulate with the to-be-processed substance to the 2nd suction | inhalation part 21B via the circulation flow path 32. FIG.
Further, the upper part of the discharge pipe 31 connected to the discharge part 22 is opened to form a deaeration part 34.

  In the lower part of the discharge chamber 28 of the suction dissolution / dispersion mechanism 2, a discharge portion 4 for the target substance is formed, and the target substance for which the dissolution / dispersion process (or polishing process) has been completed can be discharged from the suction dissolution / dispersion mechanism 2. I am doing so.

The cylindrical storage container 33 serving as the liquid source supply mechanism, the circulation flow path 32, and the casing 20 of the suction dissolution / dispersion mechanism 2 have a double structure including the jacket portion 5 (5A, 5B, 5C). The refrigerant body is supplied to (5A, 5B, 5C).
Thereby, it can prevent that the temperature of a to-be-processed substance rises and changes in quality by the motive heat by a solution dispersion process.

Next, an operation method of the powdery suction dissolution / dispersion apparatus will be described.
First, one batch of powder raw material is put into the hopper 12 and the liquid raw material is put into a cylindrical storage container 33 as a supply mechanism, the shutter valve 14 is opened, the inner tube 13 is advanced, and stored in the hopper 12. The suction dissolution / dispersion mechanism 2 is operated in such a state that the powder raw material can be supplied from the inner tube 13 through the outer tube 11 to the first suction portion 21A.

  In the suction dissolution / dispersion mechanism 2, the powder raw material of the material to be treated is introduced into the first introduction chamber 25A from the first suction portion 21A by the suction force of the rotary blade 23A, and from the first introduction chamber 25A. After being dispersed when passing through the through holes Sa formed in the stator 24 </ b> A, the liquid raw material is stirred by the rotary blades 23 </ b> A and discharged from the discharge portion 22 through the discharge chamber 28.

  On the other hand, in the suction dissolution / dispersion mechanism 2, the liquid raw material of the substance to be treated is supplied from the second suction portion 21B to the second introduction chamber 25B via the storage container 33 and the circulation channel by the suction force of the rotary blade 23A. Is dispersed when passing through the through holes Sb formed in the stator 24 </ b> A from the second introduction chamber 25 </ b> B, and then agitated with the powder raw material by the rotating blades 23 </ b> A, and the discharge unit 22 through the discharge chamber 28. It is made to discharge from.

And the to-be-processed material with which the powder raw material and the liquid raw material which were discharged from the discharge part 22 were stirred is discharge | released to the cylindrical storage container 33 arrange | positioned at the upper end part of the discharge pipe 31, and a to-be-processed substance is The second suction part 21B is circulated through the circulation channel 32.
On the other hand, air (gas) contained in the substance to be treated is prevented from being released from the storage container 33 through the deaeration unit 34 and recirculated to the second suction unit 21B through the circulation channel 32. Can do.
And the to-be-processed substance by which deaeration was performed was introduce | transduced into the 2nd introduction chamber 25B via the circulation flow path 32 and the 2nd suction | inhalation part 21B, and formed in the stator 24A from the 2nd introduction chamber 25B. After being dispersed when passing through the through hole Sb, the powder raw material is agitated by the rotary blade 23A and discharged from the discharge portion 22 through the discharge chamber 28.

  At this time, by arranging the orifice 27 in the introduction part of the second introduction chamber 25B for introducing the substance to be treated, the pressure reduction of the substance to be treated is performed, and the through hole formed in the stator 24A by the substance to be treated The pressure reducing action when passing through Sb (and the through hole Sa (when the partition plate 26 is omitted)) can be assisted.

When one batch of the powder raw material charged into the hopper 12 has been supplied (when the powder raw material is not supplied), the inner tube 13 is retracted (the retracted hopper and inner tube are connected to the two-dot chain line 12. The shutter valve 14 is closed.
This prevents the powder material supply pipe of the powder material supply mechanism 1 connected to the first suction portion 21A from getting wet and clogging when the powder material is not supplied in batch processing. In addition, air can be prevented from being sucked from the first suction portion 21A.

  When the operation of the suction dissolution / dispersion mechanism 2 is continued in this state, air is not sucked from the first suction portion 21A, so the degree of vacuum increases, and the shearing force and centrifugal force generated by the rotation of the rotary blade 23A is applied to the material to be treated. While the force is applied, the cavitation phenomenon is effectively generated by the pressure reducing action when the material to be treated passes through the through hole Sb (and the through hole Sa (when the partition plate 26 is omitted)) formed in the stator 24A. As a result, the particles in the material to be treated can be collided and rubbed while the particles in the material to be treated are rotated at a high speed by the action of generation / disappearance of microbubbles in the material to be treated. ) Can be improved.

  Then, after continuing the operation of the suction dissolution / dispersion mechanism 2 for a predetermined time, the dissolution / dispersion process (or polishing process) is performed from the discharge portion 4 of the material to be processed formed in the lower portion of the discharge chamber 28 of the suction dissolution / dispersion mechanism 2. Dispose of the treated material that has ended.

  The powder dissolution / dispersion device for powder according to the present invention has been described based on the examples. However, the present invention is not limited to the configurations described in the above examples, and may be appropriately selected without departing from the spirit of the present invention. The configuration can be changed.

  The powder suction dissolution / dispersion device of the present invention makes it possible to perform suction dissolution / dispersion processing of a small amount of powder by batch processing without waste of materials and without requiring labor. Therefore, metals, metal oxides, metal hydroxides, other inorganic substances, synthetic resins, other materials used in applications such as functional materials and filling materials in technical fields such as materials, chemistry, and electrochemistry It can be suitably used for dissolving and dispersing powders made of organic substances, and for dissolving and dispersing when the solute is a hardly soluble substance, as well as for dissolving and dispersing treatments in technical fields such as food, pharmaceuticals and construction. The present invention can be widely used for the purpose of polishing the surface of particles in a substance to be treated.

DESCRIPTION OF SYMBOLS 1 Powder raw material supply mechanism 2 Suction dissolution / dispersion mechanism 20 Casing 21 Suction part 21A First suction part 21B Second suction part 22 Discharge part 23A Rotor blade 24A Stator 24B Stator 25 Introduction chamber 25A First introduction chamber 25B First 2 introduction chamber 27 orifice 28 discharge chamber 3 discharge section 31 discharge pipe 32 circulation flow path 33 liquid material supply mechanism (storage container)
34 Deaeration part 4 Discharge part 5 (5A, 5B, 5C) Jacket part 6 Pressure gauge S Throttle channel Sa Through hole Sb Through hole

Next, a description is given of the operational method of the powder suction dissolving and dispersing apparatus.
First, one batch of powder raw material is put into the hopper 12 and the liquid raw material is put into a cylindrical storage container 33 as a supply mechanism, the shutter valve 14 is opened, the inner tube 13 is advanced, and stored in the hopper 12. The suction dissolution / dispersion mechanism 2 is operated in such a state that the powder raw material can be supplied from the inner tube 13 through the outer tube 11 to the first suction portion 21A.

Claims (3)

  The rotating blade is rotated, the substance to be treated is sucked into the introduction chamber from the first suction portion, stirred by the rotating blade, discharged from the discharge portion through the discharge chamber, and discharged from the discharge portion. The processing substance is circulated through the circulation channel to the second suction part, sucked into the introduction chamber from the second suction part, passed through the throttle channel, stirred by the rotary blade, and passed through the discharge chamber. In the apparatus for sucking, dissolving and dispersing powder, which is discharged from the discharge part, a supply mechanism for the powder raw material of the substance to be processed is disposed in the first suction part, and the liquid raw material of the target substance is disposed. Dispersion of powder by suction, disposing a supply mechanism in the discharge part, opening the upper part of the discharge part to form a deaeration part, and forming a discharge part for the substance to be processed in the lower part of the discharge chamber apparatus.   The powder raw material supply pipe of the powder raw material supply mechanism has a double structure of an outer pipe connected to the first suction portion and an inner pipe slidably disposed in the outer pipe, and is upstream of the outer pipe. And a shutter valve that can shut off the downstream side, and when supplying the powder raw material, open the shutter valve, advance the inner tube, supply the powder raw material from the inner tube through the outer tube, 2. The apparatus for sucking and dissolving and dispersing powder according to claim 1, wherein when the powder raw material is not supplied, the inner tube is retracted to close the shutter valve.   3. The powder-dissolving / dissolving apparatus according to claim 1, wherein the circulation channel has a double structure including a jacket portion, and a coolant is supplied to the jacket portion.

Images