JPS6337075Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a dispersion machine used for dispersing undissolved substances in liquids, emulsifying and homogenizing suspensions, and preparing emulsions. This also relates to a disperser with high dispersion performance.

A mechanical dispersion machine consisting of a rotor and a stator having a large number of teeth arranged in annular and concentric circles and an annular groove formed between the annular rows of teeth is used in the food industry, pigment industry, pharmaceutical industry, and paper manufacturing. Although widely used in industry, conventional mechanical dispersion machines are not suitable for extremely high-level emulsification.

It is an object of the present invention to provide an improved disperser that is capable of achieving a higher degree of emulsification than conventional dispersers.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, 1 is a casing, and an end plate 2 is fastened to one end of the casing 1 with bolts 3. The casing 1 is provided with a discharge hole 1a for discharging the liquid after dispersion treatment, and an end plate 2 is provided.
A suction hole 2a is provided in the center for sucking in the liquid before being subjected to dispersion treatment. Casing 1
A rotating shaft 4 aligned with the axis of the suction hole 2a is inserted from the opposite end of the end plate 2, and the rotating shaft 4 is aligned with the axis of the suction hole 2a.
includes an impeller 5 for pushing out the liquid in the casing 1 toward the discharge hole 1a, three rotors 6,
a distance piece 7 arranged between the rotors 6;
Distance piece 8 pressed against the rotor disposed on the tip side of the rotating shaft 4; Distance piece 8
A presser plate 9 is fitted in which is pressed into contact with. These parts are fixed on the rotating shaft 4 by being pressed toward the shoulder 4a of the rotating shaft 4 by a cap nut 10 fitted into the threaded end portion 4A of the rotating shaft 4.

Inside the casing 1, three annular stators 11 are arranged so as to form a pair with each rotor 6, facing one end surface of each rotor 6, and each stator 11 has two dais. They are spaced apart from each other along the axial direction by stance pieces 12, and are integrally integrated with the casing 1 by being press-fixed between the end plate 2 and the spigot portion 1b on the inner circumferential surface of the casing 1.

The opposing surfaces of each rotor 6 and each stator 11 have a large number of grooves separated by axial grooves or radial grooves g with respect to the axis, as shown in FIGS. 2 and 3. Teeth 6a, 6b, ... and 1
1a, 11b, . . . are provided in an annular and concentrically protruding manner, and annular grooves into which the annular rows of teeth are inserted are alternately formed concentrically. (In the accompanying drawings, the same subscripts a, b, c, etc. are attached to the teeth arranged on the same circumference.

In the embodiment of the present invention, an annular shape in which no teeth are inserted between the annular row of teeth 11a on the outermost periphery of the stator 11 and the annular row of teeth 6a on the outermost periphery of the rotor located on the inner periphery side A space S is formed, and this annular space S
It is characterized in that a medium or minute substance (for example, a small hard ball made of ceramic or stainless steel) M that cannot pass through the grooves g between the teeth (see FIGS. 2 and 3) is sealed inside.

In this embodiment, the outermost teeth 11 of the stator 11
a does not fit into the annular groove outside the outermost tooth 6a of the rotor 6, but forms the outer peripheral wall of the annular space S. As shown in FIG. 1, a substantially cylindrical sealing member 13 is attached to this tooth 11a with a mounting screw 14 so as to cover the outer peripheral surface of the rotor 6, and the rotor is This prevents the liquid from flowing out along the outer peripheral surface of 6. A screw hole communicating with the annular space S is opened in the other end face of the stator 11, and a bolt 15 is screwed into the screw hole. This screw hole is an injection hole for injecting a minute substance M into the annular space S, and the bolt 1
5 is an embolus for blocking the injection hole.

When assembling a disperser having the structure described above, the procedure is as follows. First, the impeller 5 and the first rotor 6 are fitted to the rotating shaft 4 in the casing 1, and then the first stator 11 is fitted to the first rotor 6, and then the bolt 15 is inserted into the insertion hole. After injecting the minute substance M into the annular space S, the bolt 15 is screwed in to confine the minute substance M within the annular space S. As described above, the first
After mounting the set and the impeller 5 on the rotating shaft 4,
Insert the distance piece 12, then mount the second and third sets on the rotating shaft 4 in the same manner, and finally attach the distance piece 8 and the holding plate 9 to the rotating shaft 4.
By screwing the cap nut 10 into the threaded portion 4A of the rotating shaft 4, the rotating shaft 4 of the rotor 6 is fitted.
The stator 11 paired with the rotor 6 is mounted thereon. As described above, the rotor 6 and stator 11
After setting in the casing 1, the end plate 2 is fastened to the casing 1, thereby completing the assembly of the disperser.

Next, the operation of the disperser having the above structure will be explained.

When the rotating shaft 4 is rotationally driven, the impeller 5 is also rotated, and the suction hole 2 of the end plate 2 is formed in the casing 1.
The liquid is sucked in from a in the direction of the arrow _f1 shown in the figure. The liquid sucked into the casing 1 first enters the first-stage rotor/stator pair due to the centrifugal force generated by the rotating shaft 4, and there, it passes through the radial and axial grooves g between the teeth 6b of the rotor 6. and enters the annular groove into which the tooth 11b is inserted, and within the annular groove, the circumferential groove is formed in the gap between the mutual circumferential tooth surfaces of the teeth 6b and 6a of the rotor 6 and the tooth 11b of the stator. It flows violently under strong shearing action and undergoes mixing action. Then, due to centrifugal force, the tooth 6b passes through the groove g between the teeth 6a.
Flows into the annular space S outside. The liquid that has entered the annular space S is mixed with the minute substances M that are moving within the annular space S, and is subjected to stirring and mixing effects.

The liquid that has been stirred and mixed by the microscopic substance M in the annular space S is discharged through the groove g between the teeth 11a into the space in contact with the inner peripheral wall surface of the casing 1, and then transferred to the rotor/stator of the next stage. It enters the pair, where it undergoes the same action as above.

The liquid exiting the rotor/stator pair at the final stage is guided to the discharge hole 1a by the flow in the direction of the discharge hole 1a generated by the impeller 5, and is discharged outside the casing 1 in the direction of arrow _f2 . be done.

In the above-mentioned disperser, the liquid is subjected to the stirring and mixing action of the micro-substance M in the final process of each stage, so that it is possible to generate a higher dispersing ability and emulsifying ability than the conventional disperser. Incidentally, it was difficult to achieve a high degree of dispersion or emulsification with the conventional disperser, but the disperser of the present invention was able to produce a high degree of suspension and a high degree of emulsion that could not be achieved with the conventional disperser. In addition, since the micro-substance M also has an overaction, it is possible to prevent short baths, and as a result, the disperser of the present invention can produce a more homogeneous suspension and emulsion than the conventional disperser.

The illustrated embodiments are not intended to limit the invention;
The present invention can be modified and modified in various ways within the scope of the claims for utility model registration. For example, as the minute substance, not only granules but also minute bars such as those used in rod mills and minute objects of various shapes can be used. In addition, although only an example in which the annular space for accommodating the microscopic substance is provided at the outermost periphery of each rotor/stator pair is shown, it is free to decide where and how many places the annular space is provided; It is not intended to limit ideas. Furthermore, it goes without saying that various constituent materials can be used for the minute substance depending on the type of liquid to be treated or substance to be dispersed.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of one embodiment of the disperser of the present invention, Fig. 2 is an enlarged sectional view taken in the direction of - arrow in Fig. 1, and Fig. 3 schematically explains the tooth structure of the stator or rotor. This is an explanatory diagram for DESCRIPTION OF SYMBOLS 1... Casing, 1a... Discharge hole, 2... End plate, 2a... Suction hole, 4... Rotating shaft, 5... Impeller, 6... Rotor, 6a, 6b... Teeth, 7,
8, 12... Distant piece, 9... Holding plate, 10... Cap nut, 11... Stator, 11
a, 11b...Teeth, g...Groove, 13...Sealing member, M...Minute substance, S...Annular space.

Claims (1)

[Scope of utility model registration request] The rotor has at least one rotor attached to a rotating shaft and at least one stator fixed to a stationary member such as a casing opposite to one end surface of the rotor. A large number of teeth separated by axial or radial grooves are protruded in an annular and concentric manner on the opposing end surfaces of the stator, and an annular groove is fitted into the teeth. In the dispersing device, a specific annular groove is formed as an annular space in which the teeth are not inserted, and a microscopic object such as media is inserted into the annular space. A dispersion machine characterized by enclosing an object.