CS207436B1 - Unltrasound convertor particularly for the liquid mediu - Google Patents

Description

The invention relates to the mechanical and acoustic attachment of an ultrasonic transducer to a vessel wall or membrane.

To date, ultrasonic transducers have been fixed to the vessel wall or membrane by gluing and soldering. The bonding of the ultrasonic transducer is characterized by the simplicity of the process, but epoxy and vulcanizing adhesives suitable for attaching the ultrasonic transducer to the vessel wall or diaphragm age after a certain period of time, thereby losing the required strength and flexibility especially under cyclic stress. based on epoxy resins are relatively expensive, often imported from abroad and not always available, which reduces the economic effect of the formed joint.

A further known embodiment of the fastening of, for example, a magnetostriction transducer of the ridge-type device for melting metal melting devices consists in the peripheral soldering of the transducer work face to the tub. Hard soldering technology is laborious and complex. Soft solder has low strength, low lifetime and is dependent on working temperatures. When using aluminum and titanium waveguides or their alloys, it is not possible to make such a connection,

These disadvantages are mitigated and ultimately the ultrasonic transducer solves the technical problem

20? 436

207 430 ¹ for a liquid medium consisting of an exciter and a waveguide which is glued or soldered to a vessel wall or membrane according to the present invention, the essence of which is that the waveguide face is provided with a central screw whose head is mounted in a shoulder waveguide front. The front face of the center screw head is flush and the face of the waveguide. The full face of the center screw head is spot welded to the vessel wall or membrane.

The advantages of an ultrasonic transducer, in particular a fluid medium mounted to a vessel wall or membrane by means of a central screw, are in increasing the service life, mechanical strength of the joint, especially under cyclic stress and increasing the range of working tspldt. The consumption of epoxy adhesives is reduced by about 60%. There is no need to glue the waveguide face and the vessel or membrane wall. In addition, using a center screw eliminates the need to use the centering tool during curing of the adhesive. The center screw in combination with the soft solder ensures a stronger joint and more efficient transfer of ultrasonic energy into the working environment.

The ultrasonic transducer, in particular for the liquid medium, is exemplified in the attached drawing in partial section.

The ultrasonic transducer, in particular for the liquid medium, consists of a waveguide 1, the face 2 of which is provided with a central screw 2. The head 4 of the central screw J is mounted in a shoulder 2 formed on the face 2 of the waveguide. The front surface 6 of the head 4 of the central screw 2 is spot-welded to the wall of the vessel 5 or to the membrane.

The full face 6 of the head 6 of the central screw 2 is spot-welded to the wall of the container 2 or to the membrane. The waveguide 1 is screwed onto the central screw 2 so that the head 6 of the central screw 3 abuts the shoulder 7 on the face 2 of the waveguide 1 and the face of the waveguide 2 abuts with the whole surface on the wall of the vessel 2 or the membrane. To secure the waveguide 1 against rotation in the exact position, after the waveguide 1 has been screwed onto the central screw 2, the surfaces are glued or soldered together.

The ultrasonic transducer, in particular the liquid medium, is particularly suitable for dispersing and coagulating substances in a gaseous, liquid or solid dispersant. It is easy to assemble and disassemble, and without additional bonding or soldering, it can be used in conditions subject to heat stress and is particularly suitable for carrying high acoustic performance.

Claims (1)

FIELD OF THE INVENTION An ultrasonic transducer, in particular a liquid medium consisting of an exciter and a waveguide that is glued, optionally soldered to a container wall or membrane, characterized in that the waveguide face (1) is provided with a central screw (3) whose head (4) is mounted in a shoulder (7) formed on the forehead (2) of the waveguide (1), wherein the face (6) of the head (4) of the central screw (3) lies in one plane and the face (2) of the waveguide (1) wherein the face (6) of the head (4) of the central screw (3) is point welded to the wall of the container (5) or to the membrane. 1 drawing