JP2015047540A - Centrifugal agitator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a centrifugal agitator which makes favorable the circulation of liquid which is high in viscosity, and mixed liquid containing solid substances by generating a large liquid current, prevents the stay and clogging of the liquid, and improves agitation efficiency by the smooth circulation.SOLUTION: A centrifugal agitator comprises: a center rotating shaft 3; a cylindrical body 5 rotating by the rotating shaft 3 and having the same diameter, or the cylindrical body 5 different in diameter; a blade plate 6 which is arranged toward a center part from an inner wall of the cylindrical body 5 with a prescribed interval, or the blade plate 6 of a screw structure firmly adhered to the rotating shaft 3, or the blade plate 6 firmly adhered to the rotating shaft 3; discharge ports 8 which are formed at a plurality of points on an upper face or an upper part of a sidewall of the cylindrical body 5 which is located apart from the rotating shaft; and a suction port 7 which is formed at an entire bottom part of the cylindrical body 5 which is located near the rotating shaft 3.

Description

The present invention relates to a stirring device that prevents stagnating and clogging and improves stirring efficiency by smooth circulation.

  Stirring devices are often installed in tanks that store highly viscous liquids such as crude oil and heavy oil, and mixed liquids containing solids.

  In the invention of Japanese Patent Application Laid-Open No. 58-014935 of “Patent Document 1”, “Bubble refinement and dispersion device” has a vertical rotation shaft having a gas supply hollow portion in a tank, and communicates with the hollow portion at the coaxial lower end. There is disclosed a configuration in which a rotating body for bubble refinement and dispersion having a vertical through hole and a flat bottom surface is attached, and at least one vertical groove is formed on the periphery of the rotating body.

  Japanese Patent Publication No. Sho 62-044737 of “Patent Document 2” discloses a “stirring blade body” in which the outer shape is conical in a direction orthogonal to the periphery of a disk portion whose central portion is fixed to a rotating shaft rotated by a driving source. A trapezoidal cylindrical blade body is integrally extended to form a covered cylinder, and a plurality of discharge holes are formed in the disk portion, and the blade body is divided by a plurality of suction grooves. A configuration is disclosed.

  In the invention of Japanese Patent Application Laid-Open No. 05-154368 “Highly Viscous Liquid Mixer” of Patent Document 3, the mixing blade of the mixer has a columnar body made of a plurality of rectangles on the outer surface and a circular or elliptical cylinder on the inner surface. A structure in which a lid is provided at the upper part of the cylinder, a rotation shaft is attached to the center of the lid, a plurality of holes are opened from the inner side to the outer side of the cylinder, and liquid is pushed up from the hole on the side of the cylinder Is disclosed.

In the invention of Japanese Patent Laid-Open No. 2011-255290 “Rotating body for stirring and stirring device” of Patent Document 4, a main body that rotates around a rotation shaft, an inlet and an outlet provided on the surface of the main body, and the suction A drive shaft that rotates the main body is connected to the body, the suction port is disposed at a position close to the rotation axis, and the discharge port is located at a position outside the rotation direction from the rotation shaft. The drive shaft includes a shaft flow passage that connects an opening provided in the drive shaft and the flow passage, and the shaft flow passage is connected between the suction port and the discharge port in the flow passage. ing.

JP 58-14935 A Japanese Utility Model Publication No. 62-044737 JP 05-154368 A JP 2011-255290 A

  A tank for storing a mixed liquid containing a liquid having a high viscosity or a solid is required to have a stirring device that prevents stagnant or clogging and improves the stirring efficiency by smooth circulation.

  In the invention of “Bubble miniaturization and dispersion device” of Patent Document 1, the gas supplied from the gas supply hollow portion to the bottom surface of the rotating body is subdivided into fine bubbles by the centrifugal force of the rotating body, and is formed in the entire tank. Although it is uniformly dispersed, it is not a stirring device that improves the stirring efficiency of a mixed liquid containing a highly viscous liquid or solid matter.

  The invention of the “stirring blade body” of Patent Document 2 is a cylindrical shape having a circular truncated cone shape with a disc portion having a plurality of discharge holes and a blade body divided by a plurality of suction grooves. Although it is suitable for a stirrer of an adhesive mixture made of powder, it is not a stirrer that improves the efficiency of stirring by improving the flow of a mixed liquid containing a highly viscous liquid or solid matter.

  In the invention of “High Viscosity Liquid Mixer” in Patent Document 3, a stirring device that generates a large liquid flow can be obtained by ejecting liquid from the bottom of the cylindrical body and ejecting the liquid from the hole on the side surface to obtain a dispersion effect of the high viscosity paint mixture. is not.

  The invention of “Rotating body for stirring and stirring device” in Patent Document 4 can introduce external gas or liquid from the shaft flow passage and mix and stir, and can dissolve, foam, and solidify the gas in the liquid. Dispersion and the like can be performed efficiently, but it is not a stirring device having a structure in which a large liquid flow is generated to improve the flow of a mixed liquid containing a highly viscous liquid or solid matter and prevent clogging.

The present invention has been made in view of the above-described problems of the prior art, and the object of the present invention is to generate a large liquid flow and improve the flow of a mixed liquid containing a highly viscous liquid or solid matter. Thus, a centrifugal stirring body that prevents stagnant and clogging and improves stirring efficiency by smooth circulation is obtained.

  The centrifugal agitator according to the invention of claim 1 has a central rotary shaft, a cylindrical body of the same diameter or a cylindrical body having a different diameter rotating around the rotary shaft, and a predetermined interval from the wall of the cylindrical body. A plurality of locations on the upper surface and / or upper side of the cylindrical body located far from the rotation shaft, and the blade plate disposed toward the center, or the blade structure of the screw structure fixed to the rotation shaft or the blade blade fixed to the rotation shaft And a suction port provided on the entire bottom of the cylindrical body located near the rotation axis, and the cylindrical body and the blade plate rotate with the rotation of the rotation shaft, and the cylinder It is formed such that the liquid is sucked from the suction port at the bottom of the cylindrical body, stirred inside the cylindrical body, and the liquid flows to the plurality of discharge ports.

  According to a second aspect of the present invention, the cylindrical stirring body according to the first aspect has an upper plate surface, a side wall, and a lower opening, the vane plate is fixed to the wall surface of the cylindrical body, and the suction port is a lower opening. The discharge port is formed in the upper side wall of the cylindrical body.

In the centrifugal stirring body according to the invention of claim 3, the cylindrical body of claim 1 has an upper plate surface, a side wall, and a lower opening, the blade is fixed to the rotating shaft, and the suction port is a lower opening. The discharge port is formed in the upper side wall of the cylindrical body.

  The centrifugal agitator according to the invention of claim 1 has a central rotary shaft, a cylindrical body of the same diameter or a cylindrical body having a different diameter rotating around the rotary shaft, and a predetermined interval from the wall of the cylindrical body. A plurality of locations on the upper surface and / or upper side of the cylindrical body located far from the rotation shaft, and the blade plate disposed toward the center, or the blade structure of the screw structure fixed to the rotation shaft or the blade blade fixed to the rotation shaft And a suction port provided on the entire bottom of the cylindrical body located near the rotation axis, and the cylindrical body and the blade plate rotate with the rotation of the rotation shaft, and the cylinder Since the liquid is sucked from the suction port at the bottom of the cylindrical body, stirred inside the cylindrical body, and formed so that the liquid flows to the plurality of discharge ports, the liquid flowing from the suction port at the bottom of the cylindrical body is The centrifugal force due to the rotation of the cylindrical body and the shearing force due to the rotation of the blades are combined. It is discharged from the discharge port to form a swirling flow path toward the outside to accelerate the flow. Since the flow path in this cylindrical body is wide, even if it is a highly viscous liquid or a liquid containing a mixture, it does not cause retention or clogging.

  According to a second aspect of the present invention, the cylindrical stirring body according to the first aspect has an upper plate surface, a side wall, and a lower opening, the vane plate is fixed to the wall surface of the cylindrical body, and the suction port is a lower opening. Since the discharge port is formed in the upper side wall of the cylindrical body, the shearing force is combined with the centrifugal force due to the rotation of the cylindrical body and the rotation of the blade plate integrated with the cylindrical body, thereby further increasing the stirring ability.

In the centrifugal stirring body according to the invention of claim 3, the cylindrical body of claim 1 has an upper plate surface, a side wall, and a lower opening, the blade is fixed to the rotating shaft, and the suction port is a lower opening. Since the discharge port is formed in the upper side wall of the cylindrical body, the liquid flowing in from the suction port of the lower opening is promoted by the centrifugal force of the cylindrical body and the shearing force of the blade plate, and the upward flow is promoted from the discharge port on the upper side surface. By vigorously discharging, stirring can be performed efficiently.

It is whole explanatory drawing which shows the usage example of the centrifugal stirring body which concerns on this invention. It is a perspective explanatory view showing the 1st example of an embodiment of a centrifugal stirring body. It is a longitudinal cross-sectional view of FIG. FIG. 4 is a plan sectional view of FIG. 3. It is explanatory drawing which shows 2nd Embodiment of a centrifugal stirring body. It is explanatory drawing which shows the 3rd Example of a centrifugal stirring body.

  Embodiment examples of the centrifugal stirring body according to the present invention will be described with reference to FIGS. 1 to 6. The present invention is not limited only to the following embodiments. It goes without saying that changes (for example, omission or addition of components, changes in the shape of components, etc.) can be added to the following embodiments without departing from the gist of the present invention. In addition, the figure shows the outline, only a part is drawn and the detailed structure is omitted.

FIG. 1 shows an example in which a centrifugal stirring body according to the present invention is used in a stirring device installed in a storage tank or a tank.
Reference numeral 1 denotes a flat-bottom cylindrical storage tank or tank that stores a liquid containing a highly viscous liquid or a mixture that requires stirring.
2 denotes a driving device, 3 denotes a rotating shaft, and 4 denotes a centrifugal stirring body. A plurality of centrifugal stirring bodies 4 are installed according to the size of the storage tank 1 and the necessity of stirring.
The centrifugal agitator 4 is formed by a central rotary shaft 3, a cylindrical body 5 fixed to the rotary shaft, and a blade plate 6 positioned inside the cylindrical body 5, and a suction port 7 is formed on the rotary shaft 3. The discharge port 8 is provided so as to be located far from the rotation shaft 3.
As the rotating shaft 3 is rotated by the driving device 2, the cylindrical body 5 and the blade plate 6 are rotated, and the liquid flowing in from the suction port 7 is discharged from the discharge port 8 by centrifugal force and shearing force, and the inside of the storage tank 1. Form to stir.

  The liquid flowing in from the suction port 7 at the bottom of the cylindrical body 5 is combined with a centrifugal force generated by the rotation of the cylindrical body 5 and a shearing force by the rotation of the blade plate 6 to form a swirling flow path toward the outside to accelerate the flow. Then, it is discharged from the discharge port 8. Since the flow path in this cylindrical body 5 is wide, even if it is a highly viscous liquid or a mixture containing liquid, it is hard to produce a stay and clogging.

FIG. 2 is a first embodiment showing the centrifugal agitator 4 in an enlarged manner, FIG. 3 is a longitudinal sectional view, and FIG. 4 is a plan sectional view.
The cylindrical body 5 has an upper plate surface 5b, a side wall 5a, and a lower opening 5c, and the blade 6A is fixed to a radial position of the inner wall surface 6a of the cylindrical body 5. The suction port 7 is a lower opening 5 c in the entire bottom of the cylindrical body 5, and the discharge ports 8 are provided at a plurality of locations above the side wall 5 a of the cylindrical body 5.

The cylindrical body 5 rotates with the rotation of the rotating shaft 3, and centrifugal force acts on the liquid inside, so that the liquid is discharged from a plurality of discharge ports 8 provided on the side wall 5 a of the cylindrical body 5. At the same time, the liquid flows into the cylindrical body 5 from the suction port 7 of the entire bottom.
In addition, since the blades 6 and 6A inside the cylindrical body 5 also rotate and a swirling flow in the horizontal circumferential direction is generated, the flow is compounded and the stored liquid in the tank can be efficiently stirred.

  As shown in the longitudinal section of FIG. 3, the liquid that has flowed from the suction port 7 of the lower opening 5c due to the rotation of the rotating shaft 3 receives a centrifugal force upward and outward due to the rotation of the side wall 5a, and the rotation of the blade 6A. It is accelerated by receiving the swirling flow and discharged from the discharge port 8 on the upper side of the side wall 5a.

  The flat cross section of FIG. 4 is provided with four blades 6A radially from the inner surface of the side wall 5a toward the inside with respect to the central rotary shaft 3 and the cylindrical side wall 5a. The case where it provides in the side wall 5a between 6A and 6A is shown. Reference numeral 5c denotes a lower opening in the entire bottom, which is a liquid suction port 7.

FIG. 5 is an explanatory view showing a second embodiment of the centrifugal stirring body.
The cylindrical body 5 has a circular upper plate surface 5b, a cylindrical side wall 5a, and a circular lower opening 5c. The blade 6B is formed in a screw structure and fixed to the rotary shaft 3, the suction port 7 is formed as a lower opening 5c, and the discharge port 8 is formed by opening the side wall 5a of the cylindrical body.
The shearing force is combined with the centrifugal force generated by the rotation of the cylindrical body 5 and the rotation of the blade plate 6B having a screw structure integrated with the cylindrical body 5, thereby further increasing the stirring ability.

FIG. 6 is an explanatory view showing a third embodiment of the centrifugal stirring body.
The cylindrical body 5 includes a circular upper plate surface 5b, a cone-shaped side wall 5a extending upward, and a circular lower opening 5c. The blade plate 6C is fixed to the rotary shaft 3, the suction port 7 is formed as a lower opening 5c, and the discharge port 8 is formed so as to be opened at the upper plate surface 5b in addition to the upper portion of the side wall 5a of the cylindrical body 5.
The liquid flowing in from the suction port 7 of the lower opening 5c is promoted in the upward expansion direction by the centrifugal force along the cone-shaped side wall 5a of the cylindrical body 5 and the shearing force generated by the swirling of the vane plate 6C. Since the liquid is discharged from the discharge port 8 vigorously, the liquid can be efficiently stirred.

The centrifugal stirrer can be applied to tanks of various structures that require highly efficient stirring, such as highly viscous liquids and liquids containing mixtures, and stirring devices of various storage facilities.

1 Storage tank
2 Stirrer
3 Rotating shaft
4 Centrifugal stirrer
5 Tubular body
6 blades
7 Suction port
8 Discharge port

Claims (3)

  A central rotating shaft, a cylindrical body of the same diameter or different diameters rotating around the rotating shaft, and a blade plate arranged at a predetermined interval from the cylindrical body wall toward the central portion, or rotating Screw blades fixed to the shaft or blades fixed to the rotation shaft, discharge ports provided at a plurality of locations on the upper surface and / or upper side of the cylindrical body located far from the rotation shaft, and close to the rotation shaft A suction port provided at the entire bottom of the cylindrical body positioned, and the cylindrical body and the blade plate rotate in accordance with the rotation of the rotating shaft, and are sucked from the suction port at the bottom of the cylindrical body. A centrifugal stirring body characterized in that it is stirred inside the shaped body and formed so that liquid flows to the plurality of discharge ports.   The cylindrical body has an upper plate surface, a side wall, and a lower opening, the blade is fixed to the wall of the cylindrical body, the suction port is a lower opening, and the discharge port is formed on the upper side wall of the cylindrical body. The centrifugal stirring body according to claim 1, wherein The cylindrical body has an upper plate surface, a side wall, and a lower opening, the vane plate is fixed to the rotating shaft, the suction port is a lower opening, and the discharge port is formed on the upper side wall of the cylindrical body. The centrifugal stirring body according to claim 1.

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