JPH0645627U - Stirrer - Google Patents

Abstract

(57) [Summary] [Objective] To improve the stirring effect in a stirring device using a stirring blade. [Structure] A vertical cylindrical body 2 disposed in a stirring tank 1 at a distance from a side wall and rotating about a central axis in the vertical direction, and a flow provided outside the cylindrical body 2 is provided at the lower end of the cylindrical body 2. The anchor blade 3, the inclined blade 9 and the flat blade 6 provided on the inner peripheral surface and the outer peripheral surface of the cylindrical body 2, respectively, and the liquid circulation hole 7 provided on the upper portion of the cylindrical body are provided to the inside of the cylindrical body by the anchor blade 3. A circulating flow of the content liquid is generated in the above, and the circulating content liquid is forcibly stirred by the flat blade 6 and the inclined blade 9.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stirrer suitable for stirring a medium or low viscosity liquid substance.

[0002]

[Prior art]

 In the conventional stirring device, the main stirring blades are turbine blades, chi-shaped blades, and helical ribbon blades, and the rotation of these blades mainly generates a swirling flow (co-rotation) in the content liquid. .

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional stirring device using a stirring blade such as a turbine blade, the content liquid is mainly swirled (co-rotating) by the rotation of the stirring blade, and the stirring (mixing) performance of the content liquid is low. Is.

The present invention seeks to provide a stirring device capable of generating a circulating flow and forcibly stirring during circulation in order to prevent deterioration of stirring performance due to a conventional swirling flow (co-rotating) body. To do.

[0005]

[Means for Solving the Problems]

 The stirrer of the present invention comprises a vertical cylindrical body which is disposed in the stirring tank at a distance from the side wall of the tank and rotates around a vertical center axis, and a flow provided outside the cylindrical body at the lower end of the cylindrical body. And an agitating blade provided on an inner peripheral surface and an outer peripheral surface of the cylindrical body, and a liquid flow hole provided on an upper portion of the cylindrical body.

[0006]

[Action]

 In the present invention, the anchor blade at the lower end of the rotating vertical cylindrical body causes a flow toward the outside of the cylindrical body inside the stirring tank, and the content liquid rises inside the cylindrical body and the stirring tank. The rising content liquid enters the cylinder through the liquid flow hole in the upper part of the cylinder and flows downward, so that a circulating flow of the content liquid is generated in the stirring tank. The content liquid circulating and flowing in this way is forcibly stirred by the stirring blades provided on the inner peripheral surface and the outer peripheral surface of the cylindrical body. In addition, the content liquid collides with each other when it enters the cylindrical body through the liquid flow hole, and a mixing action works.

Therefore, the present invention generates a flow of the content liquid circulating inside and outside the cylinder, and forcibly stirs it by the stirring blades on the inner and outer surfaces of the cylinder, and at the same time, the liquid on the upper part of the cylinder By causing the content liquid to collide with each other in the through hole, effective stirring can be performed.

[0008]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. A vertical cylindrical stirring tank in which a vertical cylindrical body 2 having a central axis in the vertical direction is concentric with the stirring tank 1, and a flow path 5 is provided at a distance from the side wall of the stirring tank 1. Are arranged to form a. The cylindrical body 2 is driven around a central axis of the cylindrical body 1 by being driven by a motor 13 arranged outside the stirring tank 1 through a speed reducer 14 and rotated by a shaft 16 arranged on the central axis of the cylindrical body 1. It has become.

The upper end of the cylindrical body 1 is located above the liquid level L of the content liquid, and eight liquid circulation holes 7 are provided in the upper part of the cylindrical body 1 slightly below the liquid level L. Are evenly spaced.

An anchor blade 3 for generating a flow toward the outside of the cylindrical body 1 is attached to the lower end of the cylindrical body 1 at a slight distance from the mirror portion at the bottom of the stirring tank 1, and the Four flat blades 6 are attached at even intervals in the vertical center of the outer peripheral surface, and evenly spaced in the vertical center of the inner peripheral surface of the cylindrical body 1. In addition, four inclined wings 9 are provided. The tilted blades 9 are inclined so that a downward flow is generated in the cylindrical body 1 when the cylindrical body 1 rotates.

Reference numeral 11 is a liquid supply port provided in the upper part of the stirring tank 1, 12 is a liquid discharge port provided in the lower part of the stirring tank 1, and 15 is a shaft sealing device of a shaft 16.

In the present embodiment, the content liquid supplied into the stirring tank 1 generates a circulating flow by the anchor blades 3 attached to the lower end of the rotating cylindrical body 1, and the circulating flow is generated between the stirring tank 1 and the cylindrical body 2. An upward flow 4 is formed in the passage 5 formed between the two. At this time, the content liquid is forcibly stirred by the flat blades 6 attached to the outer peripheral surface of the cylindrical body. The content liquid that has risen enters the cylinder 2 through the liquid circulation hole 7 provided in the upper portion of the cylinder 2 and descends, but at this time, the content liquid collides with each other and the mixing action works. The content liquid in the cylindrical body 2 becomes a downward flow 8 in the flow path 10 in the cylindrical body 1, and the circulating flow is increased by the inclined blades 9 attached to the inner peripheral surface of the cylindrical body 2 and The liquid is stirred.

As described above, in the present embodiment, the anchor blade 3 and the inclined blade 9 generate a circulating flow of the content liquid circulating inside and outside the cylindrical body 2, and the circulating content liquid is used as the outer peripheral surface of the cylindrical body 2. Stirring is performed by the flat blades 6 and the inclined blades 9 attached to the inner peripheral surfaces, respectively, and when passing through the liquid flow holes 7, the content liquids are mixed by collision, whereby effective stirring is performed. it can.

[0014]

[Effect of device]

 As described above, in the present invention, the rotating cylinder forms a flow path inside and outside the cylinder of the stirring tank to generate a circulating flow of the content liquid in the flow path, and Since the circulating content liquid is stirred, the stirring is effectively performed, and the stirring performance as a whole can be improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention.

FIG. 2 is a view on arrow AA of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stirring tank 2 Cylindrical body 3 Anchor blade 4 Upflow 5 Flow path 6 Flat blade 7 Liquid flow hole 8 Downflow 9 Inclined blade 10 Flow path 11 Liquid supply port 12 Liquid discharge port 13 Electric motor 14 Speed reducer 15 Shaft sealing device 16 Shaft L Liquid level

Claims (1)

[Scope of utility model registration request] 1. A vertical cylinder which is disposed in the stirring tank at a distance from the side wall of the tank and rotates about a central axis in the vertical direction, and an anchor which is provided at the lower end of the cylinder and generates a flow toward the outside of the cylinder. A stirring device comprising: a blade, stirring blades provided on an inner peripheral surface and an outer peripheral surface of the cylindrical body, and a liquid circulation hole provided on an upper portion of the cylindrical body.