JPS63107737A - Floating rotor type stirring apparatus - Google Patents

Abstract

PURPOSE:To hold a floating rotor at a position capable of always generating the max. thrust with respect to a stator by preventing the movement of the floating rotor in a thrust direction, by mounting a bar part generating thrust component force in a rotor bar. CONSTITUTION:A floating rotor 12 is constituted by providing ridge parts 13a and bent ridge parts 13b, 13b provided from both ends of each of them to the outer peripheral surface of an inner cylinder 13 composed of a magnetic material. When the floating rotor 12 is excessively biased, for example, to the right, the floating rotor 12 rotates by the rotary thrust generated within the range extending over a part of the central ridge parts 13a and the left-handed bent ridge parts 13b but, at the same time, thrust is generated within the range of the right-handed bent ridge parts 13b and one of the component forces thereof acts as the component force in the thrust direction and, by this component force, the rotor 12 is returned to a normal position. Therefore, even when biasing is generated in the floating rotor 12, the thrust component forces generated in the bent ridge parts 13b act, and the normal positional relation always generating the max. thrust is obtained between the rotor 12 and a stator 11.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a stirring device used for mixing, dissolving, cross-talking, and diffusing liquids, etc., and particularly relates to improvements in floating rotor type stirring devices. It is.

[Conventional technology]

Conventionally, as this type of floating rotor type stirring device, those shown in FIG. sI8 and FIG. 9 are known. That is,
1 is a stirring tank made of non-magnetic material, 2 is a stator that generates a moving magnetic field, and 3 is a rotor rotated by the moving magnetic field.
A large number of linear protrusions 4 & oriented in the axial direction are integrally formed at required intervals in the circumferential direction, and these protrusions 4
The outer surface portions other than a are shielded by an outer cylinder 5 made of a non-magnetic material.

However, in the above-mentioned stirring device, the magnetic force lines of the K stator 2 act effectively on the part that is not shielded with the non-magnetic material, that is, the straight protruding part 4a called the rotor bar, so that the magnetic force in the stator direction The rotor can be rotated to function as an agitation blade or a power source without increasing the suction force, but since the rotor is in a floating state, the thrust is generated by the reaction force of the agitated liquid flow. It is easy to move in the direction, and this movement has the disadvantage of causing deviation from the maximum thrust generation position with the stator and a reduction in thrust (rotational force).

[Problem that the invention seeks to solve]

The present invention provides the floating rotor type stirring device described above, in which the floating rotor is prevented from moving in the thrust direction and is always maintained at a position where maximum thrust can be generated with respect to the stator.

Means for Solving Problem C] The configuration of the floating rotor type stirring device according to the present invention is such that, in response to the rotational thrust acting on the rotor bar between the rotor bar and the stator, thrust directions that are opposite to each other are generated in the left and right portions of the rotor bar. It is characterized by having a bar portion that generates a thrust force component.

[For production]

In the above configuration, the opposing force components in the thrust direction that occur on the left and right bar portions return the rotor that is offset to its normal position, and return it to the normal position for the rotor that is in its normal position. Each works effectively as a preventive measure.

〔Example〕

In Figures 1 and 2, 10 is a stirring tank.

11 is a stator that generates a moving magnetic field, and 12 is a rotor that is rotated by the moving magnetic field. The rotor 12 has a protrusion on the outer circumferential surface of an inner cylinder 13 made of a magnetic material, which consists of a central protrusion 13a parallel to the axis and protrusions 13b bent from both ends at a predetermined angle with respect to the axis. They are integrally formed at required intervals in the circumferential direction, and the outer surface portions other than the protrusions are shielded by an outer cylinder 14 made of a non-magnetic material.

FIGS. 3 to 5 are explanatory diagrams of the effect of preventing the floating rotor of the stirring device from shifting to one side. That is, as shown in FIG. 3, when the rotor 12 is in a normal position relative to the stator 11, the floating rotor 12 is rotated by the rotational thrust generated in the entire range a of the central protrusion 13a.

As shown in FIG. 4, if the floating rotor 12 is shifted too far to the right, for example, the rotational thrust generated in the area extending between a part of the central protrusion 13a and the bent protrusion 13b on the left side The floating rotor rotates, but at the same time the bending protrusion 13b
In the range C, as shown in Fig. 5, a thrust force X is generated, and of its component force YZ, component force 2 is a rotational force, and component force Y acts as a component force in the thrust direction. This component force returns the rotor to its normal position.

Therefore, according to the above configuration, even if the floating rotor is shifted due to the reaction force of the agitated liquid flow, the thrust component force generated in the bent ridges acts, and the rotor and stator always generate the maximum thrust. The normal positional relationship is obtained.

What is shown in FIG. 6 is another embodiment of the present invention, in which the protrusion that becomes the rotor bar is a figure-7 bent protrusion 13.
e 13c. According to this configuration, since the thrust component is always acting on the bending protrusion, it is effective in preventing offset, and even if offset occurs in the rotor, it is immediately caused by the action of the thrust component. returned to normal position.

In each of the embodiments described above, the rotor bar is formed as a protrusion on the outer surface of the inner cylinder 13 made of magnetic material, but as shown in FIG. It is also possible to provide a cut groove 14a in the non-magnetic material shielding outer cylinder 14, and use the cut groove 14a as a rotor bar.

[Effects of the Invention] As described above, in a stirring device that uses a floating rotor as a stirring tool or a power source, the rotor bar has
In response to the rotational thrust acting between the rotor bar and the stator, the rotor bar is divided into left and right parts, each of which has a part that generates opposing thrust components in the thrust direction.
When the floating rotor tries to move away from the stator in the thrust direction, the thrust component force generated in the above-mentioned pa part acts to obtain a positional relationship between the rotor and the stator that always generates the maximum thrust, and the rotor is moved by the reaction force of the agitated liquid flow. It is possible to prevent unilateral increase in

[Brief explanation of the drawing]

Fig. m1 is a longitudinal sectional side view of a floating rotor cracking agitation device showing an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A, Figs. 6 is a perspective view of a floating rotor showing another embodiment, tR7 is a sectional view of a floating rotor according to another embodiment, FIG. 8 is a vertical sectional side view of a conventional floating rotor type stirring device, and FIG. 9 is a perspective view of the floating rotor. 10 is a stirring tank, 11 is a stator, 12 is a rotor, 13 is an inner cylinder made of magnetic material, 13m is a protrusion, 13b to 13c are bent protrusions, and 14 is an outer cylinder made of non-magnetic material. Figure 6 Figure 7 Figure 8 Figure 9rM Procedural amendment 11 (method) % formula % 1, Indication of the case Patent application No. 171855 of 1988 2, Name of the invention Floating rotor type stirring device 6, Person making the amendment Representative Director Shigeru Nishioka 4, Agent 107 Address 1-17-6 Akasaka 1-1d, S Minato-ku, Tokyo Subject of amendment (Attachment) (1) Section [4. Brief description of drawings] in the specification of the present application The following correction has been made to page 7, line 15. [Cross-sectional views, Figures 3 and 5 are pieces of the floating rotor.''

Claims (4)

[Claims] (1) In a floating rotor type stirring device, the rotor bar of the floating rotor is equipped with a bar portion that generates thrust components in opposite directions in the left and right portions of the rotor bar in response to the rotational thrust acting between it and the stator. A floating rotor temperature stirring device characterized by: (2) On the outer circumferential surface of the cylinder made of magnetic material, a protrusion consisting of a central protrusion parallel to the axis and protrusions bent at a required angle with respect to the axis from both ends of the protrusion extends in the circumferential direction. It is formed integrally with a required interval, the surface portion other than the protrusions is shielded by an outer cylinder made of a non-magnetic material, the protrusions serve as a rotor bar, and the bent protrusions serve as a bar portion that generates a thrust component. A floating rotor type stirring device according to claim 1. (3) The floating rotor type stirring device according to claim 2, wherein the rotor bar is a V-shaped protrusion. (4) The floating rotor type stirring device according to claim 2, wherein the rotor bar is a groove formed in an outer cylinder made of a non-magnetic material.