CN209334134U - Throw-in type ultrasonic transducer - Google Patents

Abstract

The utility model discloses a kind of throw-in type ultrasonic transducer, including screw rod, several piezoelectric ceramic pieces and electrode slice that are threadedly connected to the two end cap at the screw rod both ends and are placed on the screw rod and are clamped between two end caps, and it is filled between two end caps and covers the marine glue of the piezoelectric ceramic piece and electrode slice.Compared with prior art, piezoelectric ceramic piece and electrode slice are covered by marine glue, are sealed between two end caps in this throw-in type ultrasonic transducer, therefore it can guarantee the leakproofness and waterproofness of piezoelectric ceramic piece and electrode slice, therefore this throw-in type ultrasonic transducer can be directly thrown into cleaning solvent, it can avoid acoustic wave energy loss, improve cleaning effect.

Description

Throw-in type ultrasonic transducer

Technical field

The utility model relates to ultrasonic cleaning apparatus technical field more particularly to a kind of throw-in type ultrasonic transducers.

Background technique

Supersonic wave cleaning machine is a kind of efficient cleaning equipment, is widely used in surface spray treatment, semiconductors manufacture In the equal living scenes such as industrial circles and the cleaning of clock and watch jewellery, lens cleaning.Supersonic generator is with ultrasonic transducer The principle of the core element of supersonic wave cleaning machine, supersonic wave cleaning machine is: the high-frequency oscillation signal that supersonic generator issues leads to Energy converter is crossed to be converted into high frequency machinery oscillation and travel to medium -- in cleaning solvent, ultrasonic wave density interphase in cleaning solution Forward directed radiation flows liquid and generates the micro-bubbles of 50-500 μm of ten hundreds of diameters, is present in micro- in liquid Minute bubbles vibrate under the action of sound field.These bubbles are formed in the negative pressuren zone of ultrasonic wave longitudinal propagation, growth, and in positive pressure Area, when acoustic pressure reaches certain value, bubble is increased rapidly, and is then closed suddenly.And shock wave is generated in bubble closure, at it Surrounding generates thousands of a atmospheric pressure, destroys insoluble dirt and is scattered in them in cleaning solution, when group's particle is wrapped up in by greasy dirt And when being attached on cleaning parts surface, oil is emulsified, solids and disengaging, to achieve the purpose that cleaning part purifies.At this During kind is referred to as " cavitation " effect, bubble closure can form the high temperature of several Baidu and the moment more than 1000 air pressures High pressure.

Conventional supersonic wave cleaning machine structure is as shown in fig. 1 at present, and upper part is the sky for containing cleaning solvent Between 91, and a ultrasonic transducer 93 is installed in the lower space 92 being isolated with upper space 91, ultrasonic transducer 93 The mechanical oscillation of generation is transmitted in cleaning solvent by intermediate partition 94.Existing ultrasonic transducer 93 wraps in structure It includes the core components such as hollow shell, the piezoelectric ceramics being installed in shell, electrode and is assemblied in two ends at shell both ends Lid composition, wherein the assembling of end cap and shell generally uses screw-threaded coupling, can not form leakproofness, waterproofness to enclosure interior, Therefore it just needs for ultrasonic transducer to be arranged and keep apart in lower space 92 with cleaning solvent.But this cleaning machine due to By the way of indirect transfer vibration, energy loss is serious, causes cleaning effect not as expected.

To solve the above problems, it is necessary to provide one kind can direct plunge into cleaning solvent to enhance the super of cleaning effect Acoustic wave transducer.

Utility model content

The purpose of this utility model is to provide one kind can direct plunge into cleaning solvent to enhance the super of cleaning effect Acoustic wave transducer.

To achieve the goals above, the utility model provides a kind of throw-in type ultrasonic transducer, including screw rod, screw thread Several piezoelectricity for being connected to the two end cap at the screw rod both ends and being placed on the screw rod and being clamped between two end caps Potsherd and electrode slice, and, it is filled between two end caps and covers the marine glue of the piezoelectric ceramic piece and electrode slice.

Compared with prior art, in this throw-in type ultrasonic transducer piezoelectric ceramic piece and electrode slice covered by marine glue, It is sealed between two end caps, therefore can guarantee the leakproofness and waterproofness of piezoelectric ceramic piece and electrode slice, therefore can be by this Throw-in type ultrasonic transducer is directly thrown into cleaning solvent, be can avoid acoustic wave energy loss, is improved cleaning effect.

Preferably, further including being molded in the plastic shell on the marine glue surface.

Preferably, the quantity of the piezoelectric ceramic piece and electrode slice is four, wherein three electrode slices respectively according to Secondary to be held between four piezoelectric ceramic pieces, another electrode slice is held on piezoelectric ceramic piece and adjacent thereto described Between end cap.

Specifically, further include between two electrode slices being connected to separately for conducting wire connection interconnecting piece, it is described The quantity of interconnecting piece is two.

Preferably, being fixed with protective cover on the surface of emission of the end cap.

Specifically, the protective cover pastes the surface of emission for being fixed on the end cap using the good glue of sound permeability.

Specifically, the end cap is aluminum alloy material, and the protective cover is stainless steel protection cover.

Detailed description of the invention

Fig. 1 is the set-up mode schematic diagram of existing ultrasonic transducer.

Fig. 2 is the structural formula schematic diagram of the utility model throw-in type ultrasonic transducer.

Specific embodiment

Description is made to the preferred embodiment of the utility model below with reference to the Figure of description provided.

As shown in Fig. 2, the utility model provide a kind of throw-in type ultrasonic transducer 1, including screw rod 11, two end cap 12 with And several piezoelectric ceramic pieces 14 and electrode slice 15.The middle part aperture of piezoelectric ceramic piece 14 and electrode slice 15 simultaneously covers on screw rod 11, 12 one end of end cap offers screw hole, and two end cap 12 is threadedly connected to the both ends of screw rod 11 respectively and clamps the pressure being located between the two Electroceramics piece 14 and electrode slice 15, the other end of end cap 12 are the surface of emission.Throw-in type ultrasonic transducer 1 further includes being filled in two Between end cap 12 and cover the marine glue 16 of piezoelectric ceramic piece 14 Yu electrode slice 15.Marine glue 16 can by piezoelectric ceramic piece 14 with Electrode slice 15 is fully wrapped around firmly, and the two is made to have waterproofness by sealing.

The quantity of piezoelectric ceramic piece 14 and electrode slice 15 is four, wherein three electrode slices 15 are successively held in respectively Between four piezoelectric ceramic pieces 14, i.e., each of these three electrode slices 15 are held in two adjacent piezoelectric ceramic pieces 14 Between, and another electrode slice 15 is held between the piezoelectric ceramic piece 14 and end cap 12 adjacent thereto of most side.This four Piezoelectric ceramic piece 14 and four electrode slices 15 constitute stack of piezo crystals.In addition, in the same end for two electrode slices 15 being separated at intervals It is also connected with the interconnecting piece 17 for conducting wire connection, 15 quantity of electrode slice is four, therefore the quantity of interconnecting piece 17 is two.This two A interconnecting piece 17 is connect with the anode of power supply, cathode respectively.In fact, interconnecting piece 17 and two electrode slices 15 connected to it are Integrated formed structure and the formation after bending.

Preferably, throw-in type ultrasonic transducer 1 further includes the plastic shell 18 for being fixed on 16 surface of marine glue, outside plastic cement Shell 18 can be connected between two end cap 12, and the shape of throw-in type ultrasonic transducer 1 is made to have more integration, more attractive.

End cap 12 be with the identical aluminum alloy material that is used in existing energy converter 1, but this material is held after use Easily corrode under the cavitation of ultrasonic wave, thus the service life is not grown.Therefore, this programme is also fixed on the surface of emission of end cap 12 Protective cover 19, which is stainless steel material, is such as specifically SUS304 model, and protective cover 19 can have Effect improves the service life of energy converter 1.More specifically, the surface of emission in 12 outside of end cap is a bulge-structure, and protective cover 19 be bowl shaped structure open at one end, protective cover 19 is buckled in 12 end of end cap when assembly, and good using sound permeability Epoxy glue paste fix.

Piezoelectric ceramic piece 14 and electrode slice 15 are first set in screw rod 11 by this throw-in type ultrasonic transducer 1 in assembling Two end caps 12 (can fix in advance with protective cover) are then screwed to the both ends of screw rod 11, pass through screw fastening clamp force by portion Pre-pressing piezoelectric ceramic piece 14 and electrode slice 15, are located in piezoelectric ceramic piece 14 and electrode slice 15 between two end cap 12.So The encapsulating marine glue 16 between two end cap 12 afterwards, marine glue 16 will integrally be put into mold after forming, on the surface of marine glue 16 Injection molding forms plastic shell.

Compared with prior art, using primary filling marine glue 16, quadric injection mould in this throw-in type ultrasonic transducer 1 Mode is sealed piezoelectric ceramic piece 14 and electrode slice 15, forms good waterproof performance, therefore this throw-in type can be surpassed Acoustic wave transducer 1 is directly thrown into cleaning solvent, be can avoid acoustic wave energy loss, is improved cleaning effect.In addition, this throw-in type Ultrasonic transducer 1 is symmetric design in structure, and tool is conducive to increase ultrasonic power, increases radiation there are two radiating surface Range.

Above disclosed is only the preferred embodiments of the utility model, and effect is to facilitate those skilled in the art Understand and implement accordingly, the interest field of the utility model cannot be limited with this certainly, therefore special according to the present utility model application Equivalent variations made by sharp range still falls within the range that the utility model is covered.

Claims (7)

1. a kind of throw-in type ultrasonic transducer, it is characterised in that: including screw rod, be threadedly connected to the both ends at the screw rod both ends Several piezoelectric ceramic pieces and electrode slice for covering and being placed on the screw rod and be clamped between two end caps, and, filling Between two end caps and cover the marine glue of the piezoelectric ceramic piece and electrode slice.

2. throw-in type ultrasonic transducer as described in claim 1, it is characterised in that: further include injection molding in the marine glue table The plastic shell in face.

3. throw-in type ultrasonic transducer as described in claim 1, it is characterised in that: the piezoelectric ceramic piece and electrode slice Quantity is four, wherein three electrode slices are successively held on respectively between four piezoelectric ceramic pieces, it is another described Electrode slice is held between piezoelectric ceramic piece and the end cap adjacent thereto.

4. throw-in type ultrasonic transducer as claimed in claim 3, it is characterised in that: further include two institutes being connected to separately The interconnecting piece for conducting wire connection between electrode slice is stated, the quantity of the interconnecting piece is two.

5. throw-in type ultrasonic transducer as described in claim 1, it is characterised in that: be fixed on the surface of emission of the end cap Protective cover.

6. throw-in type ultrasonic transducer as claimed in claim 5, it is characterised in that: the protective cover uses sound permeability Good glue pastes the surface of emission for being fixed on the end cap.

7. throw-in type ultrasonic transducer as claimed in claim 5, it is characterised in that: the end cap is aluminum alloy material, institute Stating protective cover is stainless steel protection cover.