CN203465934U - Tandem type hydrodynamic force sound wave generation device - Google Patents

Abstract

The utility model relates to a tandem fluid dynamic sound wave generating device, which is provided with a first nozzle connected to a fluid pipeline at the front end of a cavity, and a second nozzle at the rear end, and the center line of the first nozzle and the second nozzle is On the same straight line, the outer wall of the second nozzle is provided with a diffuse reflector; the first nozzle and the second nozzle are connected in series through an oval cavity, the two reeds can generate two different sound wave frequencies, and the second reed generates The sound wave is reflected by the inner wall of the reflector and propagates along the diffuse reflector, so that the generated sound wave has directivity. In addition, the utility model has strong cavitation effect, high fluid mixing and emulsification efficiency, simple structure, stable operation and low cost. The lower, movable nozzle can be replaced and adjusted according to actual needs, suitable for industrial applications.

Description

A serial hydrodynamic sound wave generating device

technical field

The utility model belongs to the technical field of ultrasonic mixing or emulsification, in particular to a series fluid dynamic sound wave generator capable of realizing efficient fluid mixing or emulsification.

Background technique

At present, the reed whistle has been extensively studied and explored as a fluid dynamic sounding device. The jet liquid excites the reed to vibrate to generate ultrasonic waves. Under the action of reed vibration and sound waves, cavitation bubbles grow and collapse to produce cavitation. Oil and water are mixed or emulsified together with high temperature and high pressure generated by cavitation and sonic vibration.

However, most of the sounding devices use a single reed whistle. Usually, the fluid still has a lot of kinetic energy after impacting the reed whistle, and this part of kinetic energy is often not properly utilized, which leads to relatively low efficiency of the sounding device. Low.

Utility model content

In order to overcome the shortcomings of the single reed whistle ultrasonic generating device in the prior art, the utility model provides a serial hydrodynamic sound wave generating device with simple structure, strong cavitation effect, and high fluid mixing and emulsifying efficiency.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: the front end of the cavity is provided with a first nozzle connected to the fluid pipeline, and the rear end is provided with a second nozzle, and the centerlines of the first nozzle and the second nozzle are at the same On a straight line, the outer wall of the second nozzle is provided with a diffuse reflector;

The structure of the above-mentioned first nozzle is as follows: a first inner cylinder is sleeved on the inner wall of the first outer cylinder, a first rectangular nozzle hole is opened at the bottom of the first inner cylinder, and a The first reed, the first reed is connected to the first outer cylinder through the first connecting rod, the length of the first rectangular nozzle hole is 15-20mm, and the width is 1.5-2mm;

The structure of the above-mentioned second nozzle is as follows: a second inner cylinder is sleeved on the inner wall of the second outer cylinder, a second rectangular spray hole is opened on the bottom of the second inner cylinder, and a The second reed, the second reed is connected to the second outer cylinder through the second connecting rod, the length of the second rectangular nozzle hole is 15-20mm, and the width is 1-1.5mm;

The included angle α between the generatrix and the center line of the reflector is 45°.

The top ends of the first reed and the second reed are processed into an isosceles triangle structure with an apex angle of 25°-35°.

The top ends of the first reed and the second reed are processed into an isosceles triangle structure with an apex angle of 30°.

The above-mentioned first reed has a length of 20-40 mm and a thickness of 1.2-2.0 mm, and the second reed has a length of 40-56 mm and a thickness of 0.8-1.5 mm.

The distance from the top of the first reed to the outlet of the first rectangular nozzle is 2-10 mm, and the distance from the top of the second reed to the outlet of the second rectangular nozzle is 1-6 mm.

The axial section of the lumen of the cavity is elliptical, and the top of the first reed is located at the focal point of the long axis.

The axial cross-section of the inner chamber of the cavity can also be rectangular, and the first rectangular nozzle is located on the inlet end surface of the cavity.

The hole depths of the first rectangular spray hole and the second rectangular spray hole are both 5-15 mm.

Positioning grooves are processed on the outer walls of the first inner cylinder and the second inner cylinder, and the first outer cylinder and the second outer cylinder are respectively fixed to the first inner cylinder and the second inner cylinder by fastening bolts stuck in the positioning grooves.

The tandem fluid dynamic sound wave generator provided by the utility model is equipped with a first nozzle and a second nozzle at both ends of the cavity, and a diffuse reflector is arranged outside the second nozzle. When the fluid passes through the first After the nozzle and the slit of the second nozzle are ejected, due to the expansion of the cross section, more cavitation bubbles are formed in the low-pressure area, and cavitation occurs through growth and collapse. The treated liquid jet excites the first reed and the second reed. The reed vibrates to generate ultrasonic waves, which are mixed and emulsified under the vibration of the first reed and the second reed. At the same time, the cavitation bubbles are easier to grow and Collapse, thereby enhancing the cavitation effect, thus promoting the deep mixing or emulsification of the liquid, and the first nozzle and the second nozzle of the utility model are connected in series through the oval cavity, and the two reeds can generate two different sound wave frequencies , the sound wave generated by the second reed is reflected by the inner wall of the reflector and then propagates along the diffuse reflector, so that the generated sound wave has directivity. In addition, the utility model has simple structure, stable operation, low cost, and movable type The nozzles can be replaced and adjusted according to actual needs, suitable for industrial applications.

Description of drawings

Fig. 1 is the structural representation of embodiment 1.

FIG. 2 is a schematic structural diagram of the first nozzle 1 in FIG. 1 .

FIG. 3 is a schematic structural diagram of the second nozzle 3 in FIG. 1 .

Detailed ways

The technical solution of the utility model is now further described in conjunction with the accompanying drawings, but the utility model is not limited to the following implementation situations.

Example 1

It can be seen from FIG. 1 that the tandem hydrodynamic sound wave generating device of this embodiment is composed of a first nozzle 1 , a cavity 2 , a second nozzle 3 and a reflector 4 .

The cavity 2 of this embodiment is a hollow cylinder with an elliptical inner cavity axial section, a first nozzle 1 is installed on the front port of the cavity 2, a second nozzle 3 is installed on the rear port of the cavity 2, and the second nozzle 3 is installed on the rear port of the cavity 2. The centerlines of one nozzle 1 and the second nozzle 3 are on the same straight line.

Referring to Fig. 2, the first nozzle 1 of this embodiment is composed of a first outer cylinder 1-1, a first inner cylinder 1-2, a first reed 1-3 and a first connecting rod 1-4. The outer cylinder 1-1 is fixedly connected with the front side wall of the cavity 2 by threads, the first inner cylinder 1-2 is sleeved on the inner wall of the first outer cylinder 1-1, and the outer cylinder wall of the first inner cylinder 1-2 Positioning grooves are processed on the top, and the first outer cylinder 1-1 is fixed with the first inner cylinder 1-2 by fastening bolts stuck in the positioning grooves, and the first rectangular spray hole is opened at the bottom of the first inner cylinder 1-2 , the length is 18mm, the width is 1.8mm, the hole depth is 10mm, the first reed 1-3 is installed on the outside of the first rectangular nozzle hole 6mm from the outlet end, and the top of the first reed 1-3 Located on the focal point of the long axis of the cavity 2, the distance between the first reed 1-3 and the first rectangular nozzle hole is adjusted by adjusting the first inner cylinder 1-2. The end of the first reed 1-3 is passed through the first A connecting rod 1-4 is connected with the wall of the first outer cylinder 1-1 as an integral structure, and the first reed 1-3 is made of ductile stainless steel, its length is 30mm, its thickness is 1.6mm, and its width is the same as that of the first rectangular The nozzle holes have the same length. In order to reduce fluid resistance, the top of the first reed 1-3 facing the first rectangular nozzle hole is processed into an isosceles triangle with a vertex angle of 30°.

The structure of the second nozzle 3 of this embodiment is similar to that of the first nozzle 1. Referring to FIG. -4 connection structure, the second outer cylinder 3-1 is fixedly connected with the rear side wall of the cavity 2 with threads, and keeps the center line on the same straight line with the first outer cylinder 1-1, and the second inner cylinder 3-2 sets Connected on the inner wall of the second outer cylinder 3-1, a positioning groove is processed on the cylinder outer wall of the second inner cylinder 3-2, and the second outer cylinder 3-1 is connected with the second outer cylinder 3-1 with the fastening bolt stuck in the positioning groove. The second inner cylinder 3-2 is fixed and locked, and a second rectangular spray hole is arranged at the bottom of the second inner cylinder 3-2. The length of the second rectangular spray hole is 18mm, the width is 1.2mm, and the hole depth is 10mm. A second reed 3-3 is installed at a position 4mm outside the two rectangular spray holes, and the distance between the second reed 3-3 and the second rectangular spray hole is adjusted by adjusting the second inner cylinder 3-2. The end of the second reed 3-3 is to be connected with the wall of the second outer tube 3-1 by the second connecting rod 3-4, and the second reed 3-3 is made of tough stainless steel, and its length is 48mm, thickness is 1.2mm, and width is identical with the length of the second rectangular spray hole, and the top that the second reed 3-3 is opposite to the second rectangular spray hole is also processed into an isosceles triangle with a vertex angle of 30°.

In this embodiment, on the outer wall of the second outer cylinder 3-1, a diffuse reflector 4 is fixedly installed with threads, and the included angle α between the generatrix of the reflector 4 and its center line is 45°, so that the second spring can The sound waves generated by sheet 3-3 are reflected and propagated to enhance directivity.

When in use, when the liquid entering the pipeline enters the first nozzle 1 and sprays through the first rectangular nozzle hole to stimulate the first reed 1-3 to vibrate to generate sound waves, the ejected liquid will cause pressure changes due to the expansion of the cavity 2 section. Cavitation bubbles are formed in the cavity 2, mixed and emulsified under the action of mechanical vibration and sound waves of the vibrating reed, and then enter the second nozzle 3 and spray out through the second rectangular nozzle hole to excite the second reed 3- 3 Vibration produces another frequency sound wave, the pressure of the liquid is changed due to the expansion of the ultrasonic wave in the section of the reflector 4, and cavitation is formed again, and mixed and emulsified under the action of the second reed 3-3, the generated ultrasonic wave Under the reflection of the inner wall of the reflector 4, it propagates along the axis.

Example 2

The bottom of the first inner cylinder 1-2 of this embodiment is processed with a first rectangular nozzle hole, which is located at the focal point of the long axis of the cavity body 2, and has a length of 15 mm, a width of 1.5 mm, and a depth of 5 mm. A first reed 1-3 is installed at a position of 2 mm outside the first rectangular spray hole, and the end of the first reed 1-3 is connected to the wall of the first outer cylinder 1-1 by the first connecting rod 1-4. Integral structure, the first reed 1-3 is made of ductile stainless steel, its length is 20mm, thickness is 1.2mm, the width is the same as the length of the first rectangular spray hole, the first reed 1-3 is the same as the first rectangular nozzle The top facing the nozzle hole is processed into an isosceles triangle with an apex angle of 25°.

The bottom of the second inner cylinder 3-2 of the present embodiment is processed with a second rectangular spray hole, the length of the second rectangular spray hole is 18 mm, the width is 1 mm, and the depth is 5 mm. The position of the end 1mm is equipped with a second reed 3-3, and the end of the second reed 3-3 is connected to the wall of the second outer cylinder 3-1 by a second connecting rod 3-4. 3-3 is made of ductile stainless steel material, its length is 40mm, thickness is 0.8mm, width is the same as the length of the second rectangular spray hole, and the top of the second reed 3-3 facing the second rectangular spray hole is also Processed into an isosceles triangle with an apex angle of 25°.

Other components and their connections are the same as in Embodiment 1.

Example 3

The bottom of the first inner cylinder 1-2 of this embodiment is provided with a first rectangular spray hole, the first rectangular spray hole is located at the focal point of the long axis of the cavity 2, and its length is 20mm, width is 2.0mm, and depth is 15mm. A first reed 1-3 is installed at a position of 10 mm outside the first rectangular spray hole, and the end of the first reed 1-3 is connected to the wall of the first outer cylinder 1-1 by the first connecting rod 1-4. Integral structure, the first reed 1-3 is made of tough stainless steel material, its length is 40mm, thickness is 2.0mm, the width is the same as the length of the first rectangular spray hole, the first reed 1-3 is the same as the first rectangular The top facing the spray hole is processed into an isosceles triangle with an apex angle of 35°.

The bottom of the second inner cylinder 3-2 of the present embodiment is provided with a second rectangular spray hole with a length of 20 mm, a width of 1.5 mm, and a depth of 15 mm, at a position 6 mm from the outlet end of the second rectangular spray hole A second reed 3-3 is installed, and the end of the second reed 3-3 is connected to the wall of the second outer cylinder 3-1 by a second connecting rod 3-4. The second reed 3-3 is Made of ductile stainless steel, the length is 56mm, the thickness is 1.5mm, the width is the same as the length of the second rectangular spray hole, and the top of the second reed 3-3 facing the second rectangular spray hole is also processed into a corner 35° isosceles triangle.

Other components and their connections are the same as in Embodiment 1.

Example 4

In the above-mentioned embodiments 1-3, the axial section of the cavity 2 is circular or rectangular, and the first rectangular nozzle hole of the first nozzle 1 is located at the inlet end surface of the cavity 2 .

Other components and their connections are the same as those in the corresponding embodiments.

Example 5

In the above-mentioned embodiments 1-4, the width of the first reed 1-3 is 1 mm larger than the length of the first rectangular nozzle hole. The width of the second reed 3-3 is 1 mm larger than the length of the second rectangular nozzle hole.

Other components and their connections are the same as those in the corresponding embodiments.

Claims (9)

1. A serial fluid dynamic sound wave generating device, characterized in that: a first nozzle (1) connected to the fluid pipeline is provided at the front end of the cavity (2), a second nozzle (3) is provided at the rear end, and the second nozzle (3) is provided at the rear end. The center line of the first nozzle (1) and the second nozzle (3) are on the same straight line, and the outer wall of the second nozzle (3) is provided with a diffuse reflector (4); The structure of the above-mentioned first nozzle (1) is: the first inner cylinder (1-2) is sleeved on the inner wall of the first outer cylinder (1-1), and the bottom of the first inner cylinder (1-2) has a first The rectangular nozzle hole is provided with a first reed (1-3) at the position facing the outlet of the first rectangular nozzle hole, and the first reed (1-3) is connected to the first connecting rod (1-4) through the first connecting rod (1-4). The outer cylinder (1-1) is connected, the length of the first rectangular nozzle hole is 15-20mm, and the width is 1.5-2mm; The structure of the above-mentioned second nozzle (3) is: the second inner cylinder (3-2) is sleeved on the inner wall of the second outer cylinder (3-1), and the bottom of the second inner cylinder (3-2) has a second The rectangular nozzle hole is provided with a second reed (3-3) at the position facing the outlet of the second rectangular nozzle hole, and the second reed (3-3) connects with the second connecting rod (3-4) through the second The outer cylinder (3-1) is connected, and the length of the second rectangular nozzle hole is 15-20mm and the width is 1-1.5mm; The included angle α between the generatrix of the reflector (4) and the center line is 45°. 2. The tandem fluid dynamic sound wave generating device according to claim 1, characterized in that: the tops of the first reed (1-3) and the second reed (3-3) are processed so that the apex angle is 25° °～35°isosceles triangle structure. 3. The tandem fluid dynamic sound wave generating device according to claim 2, characterized in that: the tops of the first reed (1-3) and the second reed (3-3) are processed so that the apex angle is 30° ° isosceles triangle structure. 4. The serial fluid dynamic sound wave generating device according to any one of claims 1 to 3, characterized in that: the length of the first reed (1-3) is 20-40mm, and the thickness is 1.2-2.0mm , the length of the second reed (3-3) is 40-56 mm, and the thickness is 0.8-1.5 mm. 5. The tandem fluid dynamic sound wave generating device according to claim 4, characterized in that: the distance from the top of the first reed (1-3) to the outlet end of the first rectangular nozzle is 2-10mm, and the second reed ( 3-3) The distance from the top end of the second rectangular nozzle to the outlet end is 1-6 mm. 6. The tandem fluid dynamic sound wave generating device according to claim 1, characterized in that: the axial section of the inner cavity of the cavity (2) is elliptical, and the top of the first reed (1-3) is located on the long axis focus. 7. The tandem hydrodynamic sound wave generating device according to claim 1, characterized in that: the axial cross-section of the inner chamber of the cavity (2) is rectangular, and the first rectangular nozzle is located on the inlet end surface of the cavity (2) superior. 8 . The tandem hydrodynamic sound wave generating device according to claim 1 , wherein the hole depths of the first rectangular nozzle hole and the second rectangular nozzle hole are both 5-15 mm. 9. The tandem hydrodynamic sound wave generating device according to claim 1, characterized in that: the outer walls of the first inner cylinder (1-2) and the second inner cylinder (3-2) are both processed with positioning grooves, The first outer cylinder (1-1) and the second outer cylinder (3-1) are respectively connected to the first inner cylinder (1-2) and the second inner cylinder (3-2) through the fastening bolts stuck in the positioning groove fixed.

Images