KR20010103767A - Method and apparatus for an optimum integrated process of homogenising - Google Patents

Abstract

Liquids (I, II) in a continuous stream are guided past the surface of the ultrasonic transducer (4) and liquids (I, II) in the ultrasonic chamber (1) having a thin plate (2) or induction plate (2) In the method of continuous homogenization or emulsification of liquids (I, II), in order to provide cinematic treatment by stirring or mixing (3) when located at the outer edge or wall of (1) as well as the field leading thereto. Most of (4) is operated in the displaced continuous part 5, at least one transducer being changed to rest.

Description

TECHNICAL AND APPARATUS FOR AN OPTIMUM INTEGRATED PROCESS OF HOMOGENISING

U. S. Patent 3,614, 069 discloses the use of ultrasonic waves for mixing or emulsifying using various frequencies and intensities. The disadvantage with this device is that every single ultrasonic transducer is overloaded by driving the entire array of ultrasonic transducers simultaneously and simultaneously, and each generator cannot be driven with optimum yield and optimum effect. Another disadvantage with the system of U.S. Patent 3.614.069 is that the above-described configuration and method cannot produce or induce cavitation by high pressure, which is known only as operating conditions, and in practice the present invention is subject to the conditions of the present invention. Can only be operated optimally.

So far it is known to use an apparatus according to German patent 14.44.377, whereby the sheet is mounted directly to the outer wall to improve the mechanical stirring operation.

A disadvantage with this stationary system is that only thin plates or baffles act in particular as brakes for forced liquid stroking streaming. At this time, indirect mixing and partial oil painting are performed on the front and the periphery of these partition walls.

As disclosed in the German patent, if a horizontally arranged plate ring is mounted, this arrangement will inhibit continuous liquid flow on the active surface of the ultrasonic generator.

The present invention relates to an apparatus and method for the continuous homogenization or emulsification of liquids; In such an apparatus, the liquid in the ultrasonic chamber, which is not only located on the outer wall of the chamber but also secured in the area leading to the instrument, is placed on the surface of several ultrasonic generators by stirring. It is used for cinematic-mechanical processing using continuous flow induced at.

1 is a perspective view of an ultrasonic chamber for driving an ultrasonic transducer together with an induction plate in a displaced order to emulsify and homogenize the liquid;

FIG. 2 shows a thin plate ring and guide plate rotating around or within the central axis of the ultrasonic chamber; FIG.

3 is a perspective view from the side of a single vertical sheet or guide plate rotating around it;

3B is a plan view of the single rotating thin plate or guide plate of FIG.

4 illustrates a pulse guide ultrasonic signal.

It is an object of the present invention to provide a method as described and thereby to obtain a good effect of high quality by providing an optimized emulsification and homogenization of the actual liquid or viscous material continuously induced in the mixer chamber. At the same time, an object is to be able to drive a cavity under ultra high pressure in an actual ultrasonic chamber.

According to the present invention, this can be achieved by setting the drive type for the ultrasonic transducer and by setting the dynamic-physical state of the sheet and its properties, which is induced in the continuous series where most of the transducer is displaced, while slightly in one transducer. When the change of is stopped, the thin plate in operation is subjected to rotational motion.

The function of the present invention will be described in relation to the ultrasonic head during operation. The method for the particular transducer head and the present invention can take advantage of the high effect compared to previous continuous "normal" drive. By this method and the continuous operation according to the invention the ultrasonic head can be seated in the shift.

Thereby, the ultrasonic head can be cooled before the critical temperature of destruction is reached. Another advantage is that the ultrasonic head and its electrical resistance can be lowered by cooling. First of all, it is possible to use the two simultaneously by driving the ultrasonic head more stably within a narrower temperature range.

Another advantage is that high levels of array efficiency can be achieved by continuous movement between the heads. Since the conditions of the cavitation are changed by moving and stopping, the cavitation and emulsification can be made more effective in the liquid or kept in an optimal operating state.

According to a preferred embodiment of the present invention, operation is carried out using an extremely high operating pressure, such as for example 16 bar, or under such pressure, and ideally using a pre-mix retention time in the ultrasonic field from about 20 to 25 seconds. Running the system under conditions can further increase the emulsification and cavitation of the liquid. At the same time, the pulse generation of the ultrasonic signal can be further exploited for every single transducer with a fundamentally high maximum impulse, which is higher than the transducer allows for continuous operation.

It has been found that such systems can be operated under adverse cavitation conditions, generally with short operating times. At the same time, it is possible to obtain a significant cavitation effect by using an optimum emulsification as well as homogenization of the liquid in the mixing chamber with a high maximum impulse under such conditions.

According to a preferred embodiment of the present invention, using an operating pressure of about 16 bar, in the mixing chamber, using homogenization, pulsed ultrasonic signals, as well as emulsification, and maximum pulses higher than all of the continuously driven transducers, You can operate the system. The system can also be operated by a pause / drive function called " rif " of the transducer and at the same time a pulse generation drive or actuation of 15 to 120 kHz for an ideal 4000 liter liquid flow per hour.

It has been found that, within the frequency limits described above and by the drive scheme described above, emulsification and continuous homogenization of a particular liquid flow or a particular liquid mass is generally possible in a mixing chamber of real size.

According to another embodiment of the present invention, the thin plate can be rotated.

This additional cavitation effect can be obtained from the stroke of the liquid with a single sheet or sheet ring or from a similar arrangement. The velocity of the liquid by the stroke can be accelerated or decelerated depending on the direction in which the point of the stroke rotates.

According to another embodiment of the present invention it is possible to simultaneously support a single sheet by the rotation of the two rings of the sheet. The sheet can then rotate about its own axis.

Thereby, the same homogenization effect can be obtained. This effect can be enhanced by the choice of the speed and direction of rotation of the sheet and ring itself. This can also be done in the opposite direction to the different rotational speeds.

In another embodiment according to the present invention, the shape of the rotating thin plate can be spirally twisted in the longitudinal direction of the thin plate, thereby further enhancing the effect of emulsification.

As a result, when viewed in the longitudinal direction, the stroke of the liquid returns from the rotating thin plate, and the cross section in the longitudinal direction is not the same. And at the same time the liquid will not only be projected horizontally, but also projected in an oblique direction according to the spiral pitch of the single sheet itself. And, due to the rotation of the thin plate, the next liquid amount takes a different direction. As a result, an optimum emulsification treatment is performed.

Other objects, features and advantages of the present invention will be more clearly understood by the following detailed description with reference to the accompanying drawings.

1 is a perspective view of the ultrasonic chamber 1 with respect to the homogenization of the liquids I and II with the induction plate 2, and the operation and driving of the ultrasonic transducer 4, which operate in the displaced order, respectively. The figure shows a perspective view of an embodiment using a vertically positioned chamber I or boiler 1 which also acts as a pressure safety mixing chamber 1.

Figure 1 shows an embodiment of the emulsion in the mixing chamber 1 according to the invention, an ideal embodiment for mixing and homogenizing the lead liquids II, I in all eight paths.

Liquids II and I supplied from within the mixing chamber 1 affect the wheel alignment of the scoop 3. Through the wheel of the scoop 3 the just partially mixed liquid II, I will be projected towards the induction plate while at the same time the liquid II, I is continuously supplied from above via the supply line and partially The homogenized liquid will be directed towards the bottom of the chamber 1 continuously through the ejector pipe 8 and the ultrasonic transducer 4.

The ultrasonic apparatus is composed of four ultrasonic transducers 4. This can be operated in a field of 18 to 20 kHz as an example, but preferably in a field of 20 to 50 kHz.

The ideal interoperation period for the transducer 4 is due to successive mutual changes as "rif" 5 between them. Some transducers 4 are activated and others are not.

As an embodiment in which three transducers 4 are driven at a time, part of the drive of the transducer 4 and the other transducer 4 are not driven, and the common system of the transducer 4 is operated continuously. Do it. In a common transducer system one transducer 4 may be rotated ahead of time, or the clock may be shifted. It is also an ideal embodiment to drive three transducers 4 simultaneously. In this case, one continuous transducer 4 within " rif " 5 is new.

The advantage of this type of drive is that it can lower the "cross-talk" effect. This means that the transducer 4 acts as a receptor for the mechanical energy converted into electrical energy. In this way, heat can be removed from the generator driving the transducer 4.

Using the special shift or act 5 shown, and in accordance with the present invention, this drive type 5 is given the possibility for regular cooling of the transducer 4. This improves the stability of the impedance as a resonance effect of the whole system. This drive type 5 or type 5 will also extend the total life time of the transducer 4.

By further driving the transducer 4 with the pulse generating cavity 7, optimum and total homogenization can be achieved even with liquids II and I and fluid mass supplied to the mixing chamber 1. . And, through method 7 and using the "rif" drive of the transducer itself, an extremely dense or homogeneous cavitation field is obtained by means of a combined pulsed cavity and under a high operating pressure of, for example, 16 bar. And this field may be maintained as a subsequent "week" signal 10.

FIG. 2 shows a thin plate ring or guide plate 2 which rotates in conjunction with or connected to the central axis / peripheral interior of the ultrasonic chamber 1.

The system 2 may consist of several inner ring systems or outer rings 9 'with a thin ring or vertical seating plate of the induction plate 2. These or the outer ring 9 'can be operated opposite to each other as 9', and can be operated in combination with each other at different speeds and operating conditions.

If the thin plate or the induction plate 2 rotates, this will result in a separate mixing of the supplied liquids (II, I). This is especially the case when the supplied liquids II, I have already been mixed by the alignment of the paddle wheels 3 in the center of the mixing chamber 1.

3 is a side perspective view of a single vertical thin plate or guide plate 2 rotating around it.

Of course, the guide plate 2 is also combined with the system shown in FIG.

The system will have a separate effect when the system rotates as opposed to the intermediate ring system 3.

4 shows a pulse generating ultrasonic signal 10 that is driven as a whole. And this works as part of the "rif" drive of the ultrasonic transducer 4. That is, at the continuous displacement 5, it is driven using the transducer 4 in the resting state, and exhibits a "synergistic" effect in terms of the effectiveness of the total effect of homogenization. Thus, the effect so manifested is "remembered" to be driven for itself by one of the single section-operations or by the mode of operation 5, 7 without any other mode of operation as a complement.

Claims (6)

Liquids (I, II) in a continuous stream are guided past the surface of the ultrasonic transducer (4) and liquids (I, II) in the ultrasonic chamber (1) having a thin plate (2) or induction plate (2) In the method of continuous homogenization or emulsification of liquids (I, II) for providing a cinematic treatment by stirring or mixing (3) when located at the outer edge or wall of (1) and the field reaching it, A large part of the transducer (4) is operated in a displaced continuous part (5), wherein at least one transducer is changed and at the same time rested. The method according to claim 1, wherein the emulsification and cavitation of the liquids (I, II) can be increased by operating the system under a pressure of 16 bar and providing a delay of 20 to 25 seconds, with each transducer ( 4) is characterized in that it uses a pulsed ultrasonic signal (7) with a higher maximum pulse than the transducer (4) to be actually allowed under continuous drift. The pulse generating ultrasonic signal 7 according to claim 1 or 2, wherein the same time frequency 10 'of 15 to 17 kHz, ideally 20 to 25 kH, and a pause / drive function, i.e. " rif " Homogenizing treatment apparatus, characterized in that for driving. 2. The homogenization treatment apparatus according to claim 1, wherein a rotating or stirring operation is provided on the thin plate (2) of the mixing chamber (1) under drift. The method according to claim 1, comprising several sheet rings of a single sheet (2) capable of rotating or rotating around itself, in order to replace one or more sheet rings (9 '). Homogenization treatment apparatus, characterized in that can be combined with each other. 2. The homogenization apparatus according to claim 1, wherein each of the thin plates (2) of the mixing chamber (1) is twisted or helical.