JP2007216172A - Powder sucking and dissolving pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder sucking and dissolving pump which can perform sucking powder, feeding liquid and mixing of both by one pump, and further hardly generates the stagnancy of a powder. <P>SOLUTION: The powder sucking and dissolving pump is disclosed which keeps the agitator blade 2 protruded to the outer periphery part of a rotor 3, a cylindrical stator 5 having a slit S arranged inside of the agitator blade 2, a partition plate 9 dividing the inner side of the stator 5 into the flow passage 7 of a liquid and a chamber 8 arranged to the rotor 3, and a scraping blade 6 scraping the powder introduced from a powder introducing opening 10 communicating with the chamber 8 arranged to the chamber 8 side of the partition plate 9. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a powder suction dissolution pump, and in particular, when mixing liquid and powder (including suspension and dissolution in the present specification), the suction of powder, the feeding of liquid, and the mixing of the two are performed. The present invention relates to a powder suction dissolution pump that can be performed in two pumps.

As an apparatus for suspending and dissolving powder in a liquid, for example, there is an apparatus described in Patent Document 1.
This apparatus requires a pump for feeding the liquid, an ejector section for sucking the powder, and means for feeding the liquid to the ejector section. In this case, since a device (usually a pump) for feeding liquid to the ejector unit is necessary, as a result, two liquid feed pumps are necessary, and the entire device consisting of a powder suction unit and an ejector unit, etc. However, there was a problem that a large space and a lot of power were required.
In addition, piping and valves are necessary, and there is a problem that it takes time and labor to clean food.
Japanese Patent No. 3356957

By the way, the present applicant has previously proposed a powder suction dissolution pump capable of solving the problems of the conventional powder suction dissolution pump (see Japanese Patent Application No. 2005-1000087).
This powder suction / dissolution pump can suck powder, feed liquid, and mix both in a single pump when mixing liquid and powder. In addition to realizing space saving and energy saving in a single pump, it has the effect of being able to handle food easily even without handling time and effort. there were.
However, this powder suction dissolution pump is difficult to fluidize, specifically, thickeners such as CMC (sodium carboxymethylcellulose), sodium alginate, polyacrylamide, methylcellulose, skim milk powder, casein, starch, etc. In the case of the powder, only the surface of the powder in contact with the liquid is wetted to form an impermeable film, forming a solidified body (dama) and staying in the vicinity of the powder inlet of the chamber. It is difficult to suspend and dissolve the liquid uniformly in the liquid, and it takes time for the treatment.

  In the present invention, when a liquid and a powder are mixed, the suction of the powder, the feeding of the liquid, and the mixing of both can be performed in one pump, and further, the powder suction dissolution that does not easily cause the powder to stay. The object is to provide a pump.

  In order to achieve the above object, the powder suction and dissolution pump of the present invention has a rotor provided with stirring blades concentrically disposed in a cylindrical casing, and is provided in front of the rotor by rotation of the stirring blades. In the powder suction / dissolution pump in which liquid is introduced from the liquid inlet, the stirring blade protrudes from the outer periphery of the rotor, and a cylindrical stator having a slit is disposed inside the stirring blade. The rotor is provided with a partition plate that divides the inside of the stator into a liquid flow path and a chamber, and scrapes the powder introduced from the powder introduction port communicating with the chamber into the chamber side of the partition plate. A wing is provided.

  In this case, the slits of the stator can be formed in different shapes on the liquid flow path side and the chamber side.

  In addition, a liquid inlet can be formed in the chamber.

  Further, it is possible to form a circulation flow path that connects the pump discharge port and the liquid introduction port and / or the liquid introduction port formed in the chamber.

According to the powder suction and dissolution pump of the present invention, a rotor provided with a stirring blade is concentrically disposed inside a cylindrical casing, and the rotation of the stirring blade causes a liquid inlet to be provided in front of the rotor. In the powder suction dissolution pump in which liquid is introduced, the stirring blade projects from the outer peripheral portion of the rotor, a cylindrical stator having a slit is disposed inside the stirring blade, and the stator is attached to the rotor. A partition plate that divides the inside of the chamber into a liquid flow path and a chamber is disposed, and a scraping blade that scrapes the powder introduced from the powder introduction port communicating with the chamber is disposed on the chamber side of the partition plate. Therefore, when the liquid is introduced from the liquid inlet, the chamber is set to a negative pressure and the powder is sucked in, and the sucked powder is passed through the stator from the chamber so that the liquid can be made uniform with the stirring blade. Mixed It can be delivered to the outside.
Furthermore, the scraping blades provided on the chamber side of the partition plate can positively scrape out the powder introduced from the powder inlet communicating with the chamber, and even if the powder is difficult to fluidize, the powder is introduced into the chamber. It is possible to prevent the powder from staying in the vicinity of the mouth, and it is possible to suspend and dissolve the powder uniformly in the liquid without requiring time for the treatment, thereby improving the quality of the dissolved solution. can do.
As a result, the suction of the powder, the feeding of the liquid, and the mixing of both are performed in a single pump, realizing space saving and energy saving, and handling food easily without taking time and effort. be able to.

  In addition, by forming the slits of the stator in different shapes on the liquid flow path side and the chamber side, the quantity of liquid and powder can be adjusted.

  Further, by forming a liquid inlet in the chamber, mixing of powder and liquid can be promoted.

  Further, by forming a circulation channel that connects the pump discharge port and the liquid inlet and / or the liquid inlet formed in the chamber, the powder can be suspended and dissolved in the liquid more uniformly. .

  Hereinafter, embodiments of a powder suction dissolution pump of the present invention will be described with reference to the drawings.

1 to 8 show an embodiment of the powder suction dissolving pump of the present invention.
In this powder suction dissolution pump, a rotor 3 having a stirring blade 2 is concentrically disposed inside a cylindrical casing 1, and a liquid inlet 4 provided in front of the rotor 3 by the rotation of the stirring blade 2. A motor M for rotating the rotor 3 is disposed behind the casing 1.
The powder suction and dissolution pump has a stirring blade 2 protruding from the outer periphery of the rotor 3, a cylindrical stator 5 having a slit S inside the stirring blade 2 (center side), and a rotor. 3, a partition plate 9 that divides the inner side (center side) of the stator 5 into a liquid flow path 7 and a chamber 8 is provided, and a powder introduction port 10 communicating with the chamber 8 is provided on the chamber 8 side of the partition plate 9. A raking blade 6 that scrapes out the powder to be introduced is arranged.

  The casing 1 includes a cylindrical casing body 11, a front casing 12 disposed on the front side of the casing body 11, and a rear casing 13 disposed on the rear side of the casing body 11. A solution discharge port 14 is provided.

  As shown in FIG. 4, the front casing 12 includes a liquid introduction port 4 provided in front of the axis of the rotor 3 and a powder introduction port 10 communicating with the chamber 8. ).

  As shown in FIGS. 1 and 5, the rear casing 13 includes a mechanical seal 15 that is interposed between the rotor 3 and the motor M and seals the rotating shaft 20 of the rotor 3.

As shown in FIG. 6, the rotor 3 is a disk-shaped member, and a plurality of stirring blades 2 project forward from the outer peripheral portion thereof. The stirring blade 2 has a substantially triangular shape when viewed from the front, and has both functions of feeding and sucking liquid.
The stator 5 fixed to the front casing 12 is positioned inside (center side) of the stirring blade 2.
As shown in FIG. 7, the rotor 3 is fixed with a partition plate 9 having a funnel shape on the inner side (center side) of the stator 5 with a tip portion 9 a defining the chamber 8 at a predetermined interval. Like to do.

As shown in FIGS. 4 (h) and 8, the stator 5 is formed of a cylindrical body having slits S (S1, S2), and the shapes of the slits S are different between the liquid flow path 7 side and the chamber 8 side. I try to make it. Specifically, in this embodiment, the slits S1 on the liquid flow path 7 side are formed in long holes arranged in parallel, and the slits S2 on the chamber 8 side are formed in round holes arranged in a staggered manner. I have to.
As described above, the slits S (S1, S2) of the stator 5 are formed in different shapes on the liquid flow path 7 side and the chamber side so that the quantity of the liquid and the powder can be adjusted. ing.

As shown in FIG. 7, the partition plate 9 is provided with a scraping blade 6 that scrapes the powder introduced from the powder introduction port 10 communicating with the chamber 8 on the chamber 8 side of the partition plate 9.
A plurality of the scraping blades 6 are arranged on the partition plate 9 at equal intervals (in the present embodiment, the four blades are spaced by 90 ° in the present embodiment), and the inclination angle θ1 in the retracting direction at the distal end portion. Are arranged at the base end so as to have an inclination angle θ2 in the radial direction.
The scraping blade 6 is inserted into a circumferential groove-shaped powder introduction groove 16 that is partitioned and formed by the partition plate 9 and the front casing 12 in the chamber 8, and the powder is passed through the partition plate 9. While the inside of the introduction groove 16 is swung at high speed, the powder introduced into the powder introduction groove 16 (fluid introduced together with the powder) is drawn into the chamber 8 while continuously scooping, and the base end portion It has a function of diffusing in the radial direction.
As described above, the scraping blade 6 can positively scrape out the powder introduced from the powder inlet 10 communicating with the chamber 8, and the powder inlet 10 of the chamber 8 can be used even if the powder is difficult to fluidize. It is possible to prevent the powder from staying in the vicinity of the liquid and to suspend and dissolve the powder uniformly in the liquid without taking time for the treatment, thereby improving the quality of the dissolved solution. be able to.
In addition, the partition plate 9 is provided with a stirring blade 21 that stirs the liquid introduced from the liquid introduction port 4 communicating with the liquid channel 7 on the liquid channel 7 side of the partition plate 9.
A plurality of the agitating blades 21 are arranged on the partition plate 9 at equal intervals (although not particularly limited, in the present embodiment, four are arranged at 90 ° intervals).

Liquid inlets 18 a and 18 b are formed in the powder inlet groove 16 and the powder inlet 10 of the chamber 8.
The liquid inlets 18a and 18b are connected to a liquid supply path 19 that supplies liquid to the liquid inlet 4, and introduces the liquid supplied from the liquid supply path 19 as necessary. A pump discharge port 17 (in this embodiment, it is formed separately from the solution discharge port 14, but can also be branched from the solution discharge port 14) and connected via a circulation channel 18. If necessary, a solution supplied from the pump discharge port 17 can be introduced.
The circulation channel 18 can also be connected to the liquid inlet 4 to introduce the solution supplied from the pump outlet 17 as necessary.
As described above, by introducing the liquid and / or solution from the powder introduction groove 16 and the powder introduction port 10 of the chamber 8, or by introducing the solution from the liquid introduction port 4. Further, the mixing of the powder and the liquid is promoted, and the powder can be suspended and dissolved in the liquid more uniformly.

Next, the operation of this powder suction dissolution pump will be described.
When the rotor 3 is rotated by the motor M via the rotating shaft 20, the stirring blade 2 of the rotor 3 sucks the liquid from the liquid inlet 4. At this time, the stator 8 is placed in the chamber 8 adjacent to the liquid flow path 7. Negative pressure is applied through the slit S (S2) 5 and the powder is sucked into the chamber 8.
In this way, the liquid and powder introduced into the powder suction and dissolution pump are quantitatively adjusted by passing through the stator 5, so that the powder is continuously and stably mixed and stirred. The wing 2 mixes, dissolves, and suspends and sends out from the solution discharge port 14.

Thus, by using this powder suction dissolution pump, liquid pumping and powder suction and dissolution can be performed with a single pump, but more specific examples of use of this powder suction dissolution pump Will be described.
FIG. 9 shows that the solution and the liquid are circulated while the solution is circulated by introducing the solution into the liquid introduction port 4 through the circulation channel 18 branched and formed from the solution discharge port 14. This is an example in which mixing is promoted.
FIG. 10 shows a liquid solution (containing undissolved material) through a circulation channel 18 that is branched and formed from a solution discharge port 14 and is provided with a separation filter 22 having a filter 22a such as a perforated plate. In this example, introduction into the introduction port 4 facilitates mixing of the powder and liquid while circulating the solution. In this case, the solution that has been filtered by the separation filter 22 can be sent out without containing any undissolved material.
FIG. 11 and FIG. 12 show an example of a plant in which this powder suction dissolution pump is incorporated. As shown in FIG. The powder is supplied via a suction hose, or the powder stored in the powder tank is supplied via a hopper as shown in FIG.

  As mentioned above, although the powder suction dissolution pump of the present invention has been described based on the embodiments thereof, the present invention is not limited to the configurations described in the above embodiments, and the configurations thereof are appropriately made without departing from the spirit thereof. Can be changed.

  The powder suction dissolution pump of the present invention performs powder suction, liquid feed and mixing of both in one pump to realize space saving and energy saving, and also when washing food, it takes time and labor. For example, in the fields of food production, chemical industry, pharmaceutical industry, etc., it can be suitably used for powder dissolution and suspension applications. it can.

An example of the powder suction dissolution pump of the present invention is shown, (a) is a sectional view of the entire side surface, (b) is a sectional view of the main part. It is side surface partial sectional drawing which shows the powder suction melt | dissolution pump. It is a partial front sectional view showing the powder suction dissolution pump. A front casing is shown, (a) is a front view, (b) is a side view, (c) is an AA cross-sectional view of (a), (d) is a BB cross-sectional view of (a), (e) (A) CC sectional drawing, (f) is DD sectional drawing of (a), (g) is an enlarged view of the E section of (a), (h) is explanatory drawing of a stator. A rear casing is shown, (a) is sectional drawing, (b) is a rear view. The rotor is shown, (a) is a front view, (b) is a cross-sectional view, and (c) is an enlarged view of a main part. The partition plate is shown, (a) is a front view, (b) is a sectional view, (c) is a rear view, (d) is a bottom view, and (e) is an enlarged view of a stirring blade. The stator is shown, (a) is a sectional view, (b) is an enlarged view of the peripheral surface. It is explanatory drawing which shows the usage example of a powder suction dissolution pump. The usage example of a powder suction dissolution pump is shown, (a) is the explanatory drawing, (b) is sectional drawing of a separation filter. It is explanatory drawing which shows the usage example of a powder suction dissolution pump. It is explanatory drawing which shows the usage example of a powder suction dissolution pump.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 2 Stirring blade 3 Rotor 4 Liquid inlet 5 Stator 6 Scraping blade 7 Liquid flow path 8 Chamber 9 Partition plate 10 Powder inlet 11 Casing body 12 Front casing 13 Rear casing 14 Dissolving liquid outlet 15 Mechanical seal 16 Powder Body introduction groove 17 Pump discharge port 18a Liquid introduction port 18b Liquid introduction port 19 Liquid supply path 20 Rotating shaft 21 Stirring blade 22 Separation filter S Slit S1 Liquid channel side slit S2 Chamber side slit

Claims (4)

  A powder suction dissolution pump in which a rotor having a stirring blade is concentrically disposed inside a cylindrical casing, and liquid is introduced from a liquid inlet provided in front of the rotor by rotation of the stirring blade. The agitating blade is projected from the outer peripheral portion of the rotor, a cylindrical stator having a slit is disposed inside the agitating blade, and the inside of the stator is divided into a liquid flow path and a chamber in the rotor. And a scraping blade for scraping powder introduced from a powder introduction port communicating with the chamber on the chamber side of the partition plate. Dissolution pump.   The powder suction dissolution pump according to claim 1, wherein the slits of the stator are formed in different shapes on the liquid flow path side and the chamber side.   The powder suction dissolution pump according to claim 1 or 2, wherein a liquid introduction port is formed in the chamber.   4. The powder suction and dissolution pump according to claim 1, wherein a circulation flow path is formed to connect the pump discharge port and the liquid introduction port and / or the liquid introduction port formed in the chamber.

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