JPS63232829A - Static mixer - Google Patents

Abstract

PURPOSE:To efficiently agitate or pulverize by disposing plural agitating element combined with supersonic vibrator in a row of different phase in a tubular liquid passage and constituting a static mixer thereby. CONSTITUTION:An opening 22b of the agitating element 22 is formed to the downstream side of a fluid AB so that an emitting surface 48a of a supersonic phone 48 is directly opened in the flow passage with a result that an efficient supersonic emission is carried out; and the agitating element 22 of this static mixer gives a good agitating action to the fluid AB. Namely, a piezoelectric vibration element 36 of the agitating element 22 generates supersonic vibration due to magnetostriction by an electric excitation vibration signal sent from the outside, and this supersonic vibration is converted by the supersonic phone 48 into mechanical vibration which generates supersonic vibration in the flow passage. As a result, the colloid or solid matter in the fluid is agitated, and, in case of necessity, the solid matter can be pulverized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a static mixer, and particularly to an improved static mixer that can significantly improve the stirring and mixing action of fluids.

[Prior Art] In order to effectively stir and mix fluids, as shown in FIG. 5, a device is used that combines a plurality of fluids, for example, fluids A and B, leads them to a static mixer 10, and discharges them as a processing liquid C. is well known, and this type of static mixer 10 has the advantage of being extremely efficient and requiring no driving parts.
It is used in a wide range of technical fields. This type of static mixer 10 has a plurality of stirring elements <m stirring blades) 1 in the pipe line 12.
In FIG. 5, a stirring element 14 consisting of a large number of round rods fixed in a direction perpendicular to the central axis is used, and each of these stirring elements 14 is arranged at a predetermined angle. They are fixedly arranged on the central axis with different phases. Therefore, the fluids A and B are efficiently stirred and mixed while being sequentially divided within the mixer 10, and a desired stirring state is obtained when the fluids are discharged from the mixer 10.

This type of static mixer does not require a driving source;
It also has the advantage of having a simple structure and small size, so
It is widely used in sewage treatment such as factory wastewater or domestic wastewater, PH neutralization equipment, and other applications.

However, in various types of processing equipment in recent years, the mixing action of the static mixer is sometimes insufficient for stirring and mixing, especially when mixing between fine particles or colloidal suspended matter in the fluid. In some cases, the conventional static 11-type mixer is insufficient for crushing and mixing.

[Objective of the Invention] The present invention has been made in view of the following problems: -1: The purpose is to provide an improved static mixer that has an extremely superior mixing action compared to the conventional mixer. be.

[Structure of the Invention] In order to achieve the object described in -, the present invention incorporates an ultrasonic vibration element in at least one of the stirring elements provided in the pipe, and the vibration element applies ultrasonic vibration to the fluid. This enables extremely efficient mixing or, in some cases, crushing.

[Explanation of Examples] Preferred embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a preferred embodiment of the static mixer according to the present invention, in which a mixed fluid AB is guided into a conduit 20, and 16 agitators projecting into the conduit 20. Element 22
are arranged in different phases, and the stirring element 22 in the embodiment consists of a hollow cylinder that is fixed through the pipe line 20, and is fixed so as to be inclined so that its tip recedes in the direction of the flow path. This prevents the solids contained in the fluid AB from getting entangled or caught in the stirring element 22, and the solids move toward the tip of the stirring element 22 and flow out from the gap between the fluid AB and the pipe wall. , clogging inside the mixer is reliably prevented.

A characteristic feature of the present invention is that an ultrasonic vibration element, which will be described later, is provided inside the stirring element 22, and ultrasonic vibrations from an external ultrasonic vibration source 24 are guided to the vibration element to produce a desired effect. Ultrasonic vibration effect can be obtained.

FIG. 2 shows a specific embodiment of the stirring element 22, in which a magnetostrictive vibrator is used.

The stirring element 22 is made of a stainless steel hollow cylinder, and the stirring element 22 is connected to the lead stem 26 by a clamp 2.
It is firmly fixed with screws at 8.

That is, the clamp 28 is made of a substantially bundled nut, the internal thread of which is threadedly coupled to the threaded portion 26a of the lead stem 26, and a holder portion 28a provided at the tip thereof is provided at the tail end of the stirring element 22. It engages with the flange portion 22a. Therefore, the clamp 28 is tightened and fixed on the lead stem 26, and the washer 30 and O-ring 32 held between the flange portion 22a and the threaded portion 26a are compressed, and the stirring rope 22 and the lead stem 26 are compressed. It is firmly fixed.

The stirring rope 22 is connected to a through hole 2 provided in the pipe line 20.
0a, the compressive force of the O-ring 34 causes the stirring cable 22 to be firmly positioned and identified within the mixer conduit 20, and the close action of the O-ring 34 achieves a watertight shield.

A feature of the present invention is that an ultrasonic vibration element is provided within the stirring element 22, and in the embodiment, this vibration element is fixed to a base plate 36 fixed to the tip of the lead stem 26. Piezoelectric vibrating element 3
The piezoelectric vibrating element 38 is made of, for example, PZT.

A circuit board 4o is fixed within the lead stem 26, one end of which is connected to the piezoelectric vibrating cord 38, and the other end led to the outside via lead wires 42 and 44, as shown in FIG. It is connected to the drive source 24 shown. A part of a transmitting circuit is provided on the circuit board 40. Both lead wires 42 and 44 extend into the inside of the lead stem 26 through lead holes of a plug 46 fixed to the lead stem 26, and the entrance of the lead holes is sealed with a sealant or the like.
It is sealed.

In the embodiment, the vibration of the piezoelectric vibration element 38 is mechanically amplified within the stirring element 22, and in order to perform this amplification action, an ultrasonic horn 48 is provided within the stirring rod 22, and the ultrasonic horn 48 is The horn 48 has a substantially cylindrical cup shape, and its bottom is fixed to the base plate 36 by adhesive or other means, and transmits the vibration of the piezoelectric vibrating element 3B via the base plates 1 and 36, and its tip In the figure, ultrasonic vibrations are diffused in the region S shown in the figure. The tip of the ultrasonic horn 48 in the embodiment is cut obliquely as shown in the figure to form an ultrasonic radiation surface 48a.

In the embodiment, an opening 22b is formed on the downstream side of the flow of the fluid AB of the stirring element 22 as shown in the figure, and the ultrasonic horn 48 emits radiation tri! 48a can be opened directly into the flow path, and efficient ultrasonic radiation can be performed.

As described in 1- below, according to this embodiment, the stirring element 22
exerts a good stirring effect on the fluid AB, and
Stirred by an external electrical excitation signal! Element 22
Ultrasonic vibrations due to magnetostriction are generated in the piezoelectric vibration element 38 provided therein, and this is mechanically amplified by the ultrasonic horn 48 to generate ultrasonic vibrations in the flow path.
Effectively stirs colloids and other solids in fluids,
In some cases, it is also possible to crush necessary solids.

FIG. 3 shows a second embodiment of the present invention, in which an electrostrictive vibrating element is used, and the same members as those in the first embodiment are given the same reference numerals and their explanations will be omitted.

The electrostrictive vibrator 50 in the second embodiment includes a core 52 and a coil 54, and desired electrostrictive vibration can be obtained by applying an excitation current sent through the lead wires 42, 44 to the coil 54. can.

An ultrasonic horn 56 is fixed to the tip of the core 52, and the cup-shaped ultrasonic horn 56 allows the core 52 to be
The vibrations are radiated into the flow path as ultrasonic waves S as shown in the figure.

As described above, in the second embodiment as well, the ultrasonic vibration element consisting of the electric vibrator 50 is built into the stirring rope 22, thereby generating ultrasonic vibration in the flow path.
It becomes possible to obtain desired stirring or crushing efficiency.

No. 414 shows a third embodiment of the present invention, in which a mixer has one stirring element 22 inserted into the pipe line 20 along the central axis of the pipe line 20, and the mixer is arranged at different phases on the element shaft 60. Fixed.

The characteristic feature of this embodiment is that in order to use the stirring cable T22 as it is as a super wave horn, the element 22 is formed from a thin-walled vibrator, and a piezoelectric element T62 is attached to the part of the element shaft 60 that is connected to the cable 22. The reason is that it has been fixed. and,
The element shaft 60 also consists of a hollow vibrator, and the piezoelectric vibrator 62
Lead wires 64, 66 for supplying an excitation current extend through the vibrator to a predetermined position.

According to the third embodiment, the stirring element 22 itself can be used as an ultrasonic horn to generate efficient ultrasonic vibrations within the flow path.

In the present invention, the ultrasonic vibration elements can be provided on some or all of the stirring elements, and the number of ultrasonic vibration elements to be installed is selected depending on the required ultrasonic vibration.

[Effects of the Invention] As described in 1-1 below, according to the present invention, by incorporating an ultrasonic vibration element in the stirring element of a static +1-M mixer, more efficient stirring or crushing can be performed. This makes it possible to provide a static mixer with excellent mixing characteristics.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part showing a schematic configuration of a static mixer according to the present invention, FIG. 2 is a sectional view of a preferred embodiment showing details of the inside of a stirring element of a static mixer according to the present invention, and FIG. 4 is a sectional view of a main part showing another embodiment of the present invention, FIG. 5 is a sectional view of a main part showing another embodiment of the invention, and FIG. 5 is a conventional general static 11. It is a schematic diagram explaining a mold mixer. 20... Pipe line 22... Stirring element 221]... Opening 24... Ultrasonic drive source 26... Lead stem 28... Clamp 36... Base play 1, 38... Piezoelectric vibrating element 48... Ultrasonic horn 50... Electrostrictive vibrating element 56... Ultrasonic horn 60... Element shaft 62... Piezoelectric vibrator. Figure 1 Figure 2 Figure 3

Claims (3)

[Claims] (1) In a static mixer in which a plurality of stirring elements are arranged in different phases in a conduit through which a fluid is guided, an ultrasonic vibration element is incorporated in the stirring element to give ultrasonic vibration to the fluid and stir it. A static mixer characterized by promoting action. (2) A static mixer according to claim (1), characterized in that an ultrasonic horn is connected to the ultrasonic vibration element. (3) In the mixer according to any one of claims (1) and (2), the stirring element has a hollow cylindrical shape that incorporates an ultrasonic vibration element inside, and the ultrasonic wave is applied to the fluid downstream side of the hollow cylinder. A static mixer characterized by being provided with an opening for dissipating.