Ultrasonic cleaning equipment applied in the process of industrial production belongs to the realm of industrial precision cleaning. Ultrasonic cleaning technology is widely used in many fields such as food, textile, paper, printing industry, petroleum processing industry, transportation, electric power, metal processing industry, machinery, automobile manufacturing, instrumentation & electronics, household appliances, medical, etc.
What's ultrasonic wave: sound waves are divided into three types, infrasonic waves, sound waves, and ultrasonic waves. The frequencies of infrasonic waves are below 20hz, the frequencies of sound waves are in the range of 20hz~20khz, the frequencies of ultrasonic waves are above 20khz. Infrasonic waves and ultrasonic waves are inaudible to the human ear. Ultrasonic waves have many features like high frequency, short wavelength, good directivity and penetrability in propagation. That's why they are used for design and production of ultrasonic cleaning tank.
Ultrasonic cavitation effect is the dynamical processes in which cavitation bubbles in liquid are forced to grow and collapse due to a certain acoustic pressure, small vacuum bubbles in liquid collapse and cause many phenomenons such as high pressure, high temperature, electrical discharge, luminescence, shock wave, etc. The factors affecting the formation of vacuum void include ultrasonic energy, implosion shock, impact and friction of high-speed fluid, strong reactions, etc.
Along with the development of industry, the workpieces cleaned by the ultrasonic cleaning machines become more and more fine, and there are increasingly high requirements on cleanliness of the workpieces. Considering both cleaning effect and economy, It is critical to choose the right frequency and power for ultrasonic cleaning, generally we need to get data from practice.
Tension measuring sensor is a major part of tension control system, there are many kinds of tension sensors in the market, common ones include plate spring micro-displacement sensors, piezomagnetic sensors, resistance strain sensors, and there are huge variations in principle and structure. When the tension measuring sensor is determined, The matching measuring methods and equipment can also be determined. So the success or failure of measuring result largely depends on the selection of tension sensor. How to buy an appropriate tension measuring sensor? The following things are included:
Weight sensor is a device which can transform the gravity in a certain ratio into measurable output signal. According to the transformation methods, weighing sensors can be divided into many types such as photoelectric, hydraulic, electromagnetic force, capacitive, vibration, gyroscope, resistance stain, etc, and resistance stain type sensors are most widely used. This paper briefly introduces the basic technical parameters of the weight sensors.
Tension control system are broadly used in industrial applications such as papermaking, adhesive tape production, cable production, film production, packaging industry, printing industry, etc. Stable material tension is crucial to product quality during winding process.
Transformation object： forced draft motor & induced draft motor of six ton steam boiler. Transformation target： energy saving, improve combustion efficiency of boilers and reduce the atmospheric pollution. Motor specification: forced-draft motor power: 5.5KW, induced draft motor power: 18.5KW
Since PLC came into being, it has realized leap-type development from wiring logic to storage logic. Its function from weak arrive strong, carried out logic control to digital control. Applications become more and more widely, It made a leap from simple control for single equipment to various tasks such as motion control, process control, distributed control, etc. Nowadays PLC has greatly improved its capabilities in analog processing, digital operation, human-computer interface and networks, becoming an essential control equipment in industry control fields, developing a more and more big function in all walks of life.
PLC is also called programmable logic controller, there are more and more kinds and brands of PLC in the market, and their application fields are more and more widely, PLC plays a more and more important role in industry control especially in sequential control, it has no substitute in the foreseeable future. Generally manufacturers will write the software for PLC before it leaves the factory, but frequently we need to rewrite the PLC program to meet production requirements. This requires our software engineers to develope a good habit in daily programming. No one can draw a square and a circle without proper tools, following are the basic steps of PLC software programming:
Ultrasonic cavitation effect provides probable conditions for degradation of harmful organic substance, and thus realizes wastewater treatment by ultrasonic technology. In sewage treatment process, acoustic cavitation can greatly increase the degradation rate. By collapse of bubbles, a large amount of energy will be released to cause chemical bonds cleavage, and form hydroxyl (OH) and hydrogen (H) radicals, and oxidize dissolved organic compounds, formed as a consequence of OH, HO2, inorganic ions, and other easily degradable organism. So ultrasonic method can make non-biodegradable organics easily to degradation.
According to requirements of cleaning objects and production scale, ultrasonic cleaning machines have great difference on composition and structure, It can be a complex and huge equipment or a very simple design. Here we focus on the cleaning effect of ultrasonic bath which consists of ultrasonic transducer, ultrasonic generator and cleaning tank.
In the using process of ultrasonic cleaner, the failure inevitably occurred and requires maintenance. For some good reputation manufacturers, the cleaners will be repaired within the guarantee period. However, how about the repairs in emergency situations or after the warranty expires? Let's brief introduce how to repaire an ultrasonic cleaner as below.
When we choose an ultrasonic cleaner, first we should know which one is the best cleaning method for our workpieces. in the second, what cleaning effects should be achieve? In the third, we should know the quantity of products and the cleaning capacity of equipment. Fourth, know about cleaning process from similar industry enterprise or cleaning equipment manufacturers. Fifth, choose a number of professional manufacturers, and compare them in cleaning technique, price and after-sales service. Sixth, in deciding a contract, the specification and type of material, the consumables price, maintenance and warranty terms and conditions and other necessary particulars should be stipulated as clearly as possible. Seventh, for some large cleaning machines, you need to take the workpieces to the factory for site acceptance. Eighth, you should make sure that your employees have really learned to operate the cleaner, and not listen to installers to say, they have been trained.
Next：Articles in 2016