1. How does the ultrasonic equipment send ultrasonic waves into our materials?

Answer: ultrasonic equipment is to convert electrical energy into mechanical energy through piezoelectric ceramics, and then into sound energy. The energy passes through the transducer, horn and tool head, and then enters the solid or liquid, so that the ultrasonic wave interacts with the material.

2. Can the frequency of ultrasonic equipment be adjusted?

Answer: the frequency of ultrasonic equipment is generally fixed and cannot be adjusted at will. The frequency of ultrasonic equipment is jointly determined by its material and length. When the product leaves the factory, the frequency of ultrasonic equipment has been determined. Although it changes slightly with environmental conditions such as temperature, air pressure and humidity, the change is not greater than ± 3% of the factory frequency.

3. Can the ultrasonic generator be used in other ultrasonic equipment?

Answer: No, the ultrasonic generator is one-to-one corresponding to the ultrasonic equipment. Since the vibration frequency and dynamic capacitance of different ultrasonic equipment are different, the ultrasonic generator is customized according to the ultrasonic equipment. It must not be replaced at will.

4. How long is the service life of sonochemical equipment?

Answer: if it is used normally and the power is below the rated power, the general ultrasonic equipment can be used for 4-5 years. This system uses titanium alloy transducer, which has stronger working stability and longer service life than ordinary transducer.

5. What is the structure diagram of sonochemical equipment?

Answer: the figure on the right shows the industrial level sonochemical structure. The structure of the laboratory level sonochemical system is similar to it, and the horn is different from the tool head.

6. How to connect the ultrasonic equipment and the reaction vessel, and how to deal with the sealing?

Answer: the ultrasonic equipment is connected with the reaction vessel through a flange, and the flange shown in the right figure is used for connection. If sealing is required, sealing equipment, such as gaskets, shall be assembled at the connection. Here, the flange is not only a fixed device of the ultrasonic system, but also a common cover of the chemical reaction equipment. Since the ultrasonic system has no moving parts, there is no dynamic balance problem.

7. How to ensure the heat insulation and thermal stability of the transducer?

A: the allowable working temperature of the ultrasonic transducer is about 80 ℃, so our ultrasonic transducer must be cooled. At the same time, appropriate isolation shall be carried out according to the high operating temperature of the customer’s equipment. In other words, the higher the operating temperature of the customer’s equipment, the longer the length of the horn connecting the transducer and the transmitting head.

8. When the reaction vessel is large, is it still effective at a place far away from the ultrasonic equipment?

Answer: when ultrasonic equipment radiates ultrasonic waves in solution, the wall of the container will reflect ultrasonic waves, and finally the sound energy inside the container will be evenly distributed. In professional terms, it is called reverberation. At the same time, because the sonochemical system has the function of stirring and mixing, strong sound energy can still be obtained at the far solution, but the reaction speed will be affected. In order to improve the efficiency, we recommend using multiple sonochemical systems at the same time when the container is large.

9. What are the environmental requirements of the sonochemical system?

Answer: use environment: indoor use;

Humidity: ≤ 85%rh;

Ambient temperature: 0 ℃ – 40 ℃

Power size: 385mm × 142mm × 585mm (including parts outside the chassis)

Use space: the distance between the surrounding objects and the equipment shall not be less than 150mm, and the distance between the surrounding objects and the heat sink shall not be less than 200mm.

Solution temperature: ≤ 300 ℃

Dissolver pressure: ≤ 10MPa

10. How to know the ultrasonic intensity in liquid?

A: Generally speaking, we call the power of ultrasonic wave per unit area or per unit volume as the intensity of ultrasonic wave. This parameter is the key parameter for ultrasonic wave to work. In the whole ultrasonic action vessel, the ultrasonic intensity varies from place to place. The ultrasonic sound intensity measuring instrument successfully manufactured in Hangzhou is used to measure the ultrasonic intensity at various positions in the liquid. For details, please refer to the relevant pages of.

11. How to use the high-power sonochemical system?

Answer: the ultrasonic system has two uses, as shown in the right figure.

The reactor is mainly used for the sonochemical reaction of flowing liquid. The reactor is equipped with water inlet and outlet holes. The ultrasonic transmitter head is inserted into the liquid, and the container and the sonochemical probe are fixed with flanges. Our company has configured corresponding flanges for you. On the one hand, this flange is used for fixing, on the other hand, it can meet the needs of high-pressure sealed containers. For the volume of solution in the container, please refer to the parameter table of laboratory level sonochemical system (page 11). The ultrasonic probe is immersed in the solution for 50mm-400mm.

Large volume quantitative container is used for sonochemical reaction of a certain amount of solution, and the reaction liquid does not flow. Ultrasonic wave acts on the reaction liquid through the tool head. This reaction mode has uniform effect, fast speed, and easy to control the reaction time and output.

12. How to use the laboratory level sonochemical system?

Answer: the method recommended by the company is shown in the right figure. Containers are placed on the base of the support table. The support rod is used to fix the ultrasonic probe. The support rod must only be connected with the fixed flange of the ultrasonic probe. The fixed flange has been installed for you by our company. This figure shows the use of the sonochemical system in an open container (no seal, normal pressure). If the product needs to be used in sealed pressure vessels, the flanges provided by our company will be sealed pressure resistant flanges, and you need to provide sealed pressure resistant vessels.

For the volume of solution in the container, please refer to the parameter table of laboratory level sonochemical system (page 6). The ultrasonic probe is immersed in the solution for 20mm-60mm.

13. How far is the ultrasonic wave acting?

A: *, ultrasound has been developed from military applications such as submarine detection, underwater communication and underwater measurement. This discipline is called underwater acoustics. Obviously, the reason why ultrasonic wave is used in water is precisely because the propagation characteristics of ultrasonic wave in water are very good. It can spread very far, even more than 1000 kilometers. Therefore, in the application of sonochemistry, no matter how large or what shape your reactor is, ultrasound can fill it. Here is a very vivid metaphor: it is like installing a lamp in a room. No matter how big the room is, the lamp can always cool the room. However, the farther away from the lamp, the darker the light. Ultrasound is the same. Similarly, the closer to the ultrasonic transmitter, the stronger the ultrasonic intensity (ultrasonic power per unit volume or unit area). The lower the average power allocated to the reaction liquid of the reactor.