CN217704730U

CN217704730U - Circular tube type piezoelectric nozzle

Info

Publication number: CN217704730U
Application number: CN202220970456.0U
Authority: CN
Inventors: 汤枭雄; 张以恬
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-11-01
Anticipated expiration: 2032-04-25

Abstract

The utility model discloses a pipe formula piezoelectric nozzle relates to the droplet and sprays additive manufacturing technical field. The utility model discloses a orifice and annular piezoelectric element, the top of orifice is fixed with spouts the chamber, and the outside of spouting the chamber is fixed with annular piezoelectric element, and annular piezoelectric element's internal surface is provided with the inner electrode, and annular piezoelectric element's surface is provided with the outer electrode, and the inner electrode passes through the mode of metallic coating parcel to be fixed on annular piezoelectric element's surface, and the top of outer electrode bonds on the annular piezoelectric element has last electrode piece, and the top of inner electrode bonds and has lower electrode piece on the annular piezoelectric element. The utility model discloses a orifice, spout the chamber and all adopt plastic materials to make, use and can directly produce through hot pressing or injection moulding process, simple process, orifice size uniformity is better to reasonable in design, feasible spraying chamber adopts thin shape plastics processing to form, can effectively transmit annular piezoelectric element energy, forms required liquid drop.

Description

Circular tube type piezoelectric nozzle

Technical Field

The utility model belongs to the technical field of droplet sprays vibration material disk, especially, relate to a tubular piezoelectric nozzle.

Background

The circular tube type piezoelectric nozzle is derived from an ink-jet printing technology, can be used for spraying liquid solder, adhesive, optical polymer, electrical polymer, biological material and the like, is very suitable for automatic control of manufacturing factories or research laboratories, and is designed because the main structure of the existing circular tube type piezoelectric nozzle is made of glass, the manufacturing process of spray holes and spray cavities is complex, the size consistency of the spray holes is poor, and the yield is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tubular piezoelectric nozzle to solve the problem that proposes in the above-mentioned background art.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme: the utility model provides a tubular piezoelectric nozzle, includes orifice and annular piezoelectric element, the top of orifice is fixed with spouts the chamber, the outside of spouting the chamber is fixed with annular piezoelectric element, annular piezoelectric element's internal surface is provided with the inner electrode, annular piezoelectric element's surface is provided with the outer electrode, the inner electrode passes through the mode of metal coating parcel to be fixed on annular piezoelectric element's surface, the top of outer electrode bonds and has last electrode piece on the annular piezoelectric element, the top of inner electrode bonds and has lower electrode piece on the annular piezoelectric element, the top of spouting the chamber is equipped with the liquid circuit connecting tube.

Further, the shape of the nozzle hole is conical.

Furthermore, the inside of orifice bottom is seted up the micropore that link up.

Furthermore, the material of the spray holes and the spray cavity is plastic.

Furthermore, the diameter of the micropores on the spray hole is 20-120 μm.

Further, the diameter of the micro-hole on the spray hole is 50 μm.

Further, the wall thickness of the spraying cavity is 0.1mm to 0.5mm.

Further, the wall thickness of the spray cavity is 0.3mm.

Further, a gap between the annular piezoelectric element and the spray cavity is filled with resin.

The utility model discloses following beneficial effect has:

the utility model discloses a orifice, spout the chamber and all adopt plastic materials to make, use and can directly produce through hot pressing or injection moulding process, simple process, orifice size uniformity is better to reasonable in design, feasible spraying chamber adopts thin shape plastics processing to form, can effectively transmit annular piezoelectric element energy, forms required liquid drop.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of the present invention;

fig. 2 is a schematic view of the longitudinal section structure of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. spraying a hole; 2. a spray chamber; 3. an annular piezoelectric element; 4. an electrode plate is arranged; 5. a lower electrode plate; 6. the liquid path is connected with the pipeline.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention relates to a circular tube type piezoelectric nozzle, which comprises a nozzle hole 1 and a ring-shaped piezoelectric element 3, wherein the nozzle hole 1 is conical, a through-hole is formed in the bottom of the nozzle hole 1, a nozzle cavity 2 is fixed on the top of the nozzle hole 1, the nozzle hole 1 and the nozzle cavity 2 are made of plastic, and the nozzle hole 1 and the nozzle cavity 2 can be formed by plastic manufacturing and are bonded together by an adhesive;

furthermore, an annular piezoelectric element 3 is fixed on the outer side of the spray cavity 2, an inner electrode is arranged on the inner surface of the annular piezoelectric element 3, an outer electrode is arranged on the outer surface of the annular piezoelectric element 3, the inner electrode is fixed on the outer surface of the annular piezoelectric element 3 in a metal coating wrapping mode, and a ring-shaped area of metal on the outer surface is removed to separate the inner electrode from the outer electrode; an upper electrode plate 4 is bonded on the top of an upper outer electrode of the annular piezoelectric element 3, a lower electrode plate 5 is bonded on the top of an upper inner electrode of the annular piezoelectric element 3, and a liquid path connecting pipeline 6 is assembled on the top of the spraying cavity 2;

when the piezoelectric element is used, the liquid path connecting pipeline 6 fills the spraying cavity 2 with liquid to be sprayed, the inlet flow of the liquid path connecting pipeline 6 is connected with the upper electrode plate 4 and the lower electrode plate 5 which are both connected with a piezoelectric driving power supply, and the annular piezoelectric element 3 is controlled by setting a required piezoelectric driving waveform; the liquid volume in the spray cavity 2 is changed through the vibration displacement of the annular piezoelectric element 3 to be sprayed from the spray hole 1 to form a required micro-droplet;

furthermore, the invention needs to ensure the size of the generated droplets, so that the diameter of the jet orifice has higher requirements, and the diameter of the micropore on the jet orifice 1 is between 20 and 120 μm.

Furthermore, in order to reduce the energy dissipation in the working process of the piezoelectric nozzle, the wall thickness of the processed spray cavity 2 is between 0.1mm and 0.5mm.

Furthermore, in order to improve the piezoelectric effect of the piezoelectric nozzle, a gap between the annular piezoelectric element 3 and the spray cavity 2 is filled with a resin material, and the gap distance is less than 0.6mm.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A circular tube type piezoelectric nozzle is characterized in that: including orifice (1) and annular piezoelectric element (3), the top of orifice (1) is fixed with spouts chamber (2), the outside of spouting chamber (2) is fixed with annular piezoelectric element (3), the internal surface of annular piezoelectric element (3) is provided with the inner electrode, the surface of annular piezoelectric element (3) is provided with the outer electrode, the inner electrode passes through the mode of metal coating parcel to be fixed on the surface of annular piezoelectric element (3), the top bonding of outer electrode has last electrode piece (4) on annular piezoelectric element (3), the top bonding of inner electrode has lower electrode piece (5) on annular piezoelectric element (3), the top of spouting chamber (2) is equipped with liquid circuit connecting tube (6).

2. A circular tube type piezo-jet head according to claim 1, wherein: the shape of the spray hole (1) is conical.

3. A circular tube type piezo-jet head according to claim 1, wherein: and the inner part of the bottom end of the spray hole (1) is provided with a through micropore.

4. A circular tube type piezo-jet head according to claim 1, wherein: the material of the spray hole (1) and the spray cavity (2) is plastic.

5. A circular tube type piezo-jet head according to claim 1, wherein: the diameter of the micropores on the spray hole (1) is 20-120 μm.

6. A circular tube type piezo-jet head according to claim 5, wherein: the diameter of the micropores on the spray hole (1) is 50 microns.

7. A circular tube type piezo-jet head according to claim 1, wherein: the wall thickness of the spray cavity (2) is 0.1mm to 0.5mm.

8. A circular tube type piezo-jet head according to claim 7, wherein: the wall thickness of the spraying cavity (2) is 0.3mm.

9. A circular tube type piezo-jet head according to claim 1, wherein: and a gap between the annular piezoelectric element (3) and the spray cavity (2) is filled with resin.