Tuning fork liquid level switch is no stranger to instrument people. It is widely used in industrial fields and belongs to the switch type instrument for measuring liquid level.In fact, the tuning fork was first used in piano tuning and identification of deafness. It is a “Y”-shaped steel or aluminum alloy sound generator. Various tuning forks can be different due to their quality and the length and thickness of the fork arms. When vibrating, it emits pure tones of different frequencies.In the field of industrial control, with the help of the high symmetry and vibration characteristics of the tuning fork, a switch-type instrument based on the tuning fork that can measure the liquid level has been created.It is the symmetry of the height of the fork that determines that the tuning fork can vibrate regularly at a fixed frequency. Therefore, for the production of tuning fork liquid level switches, it is quite critical to solve the symmetry of the fork body.For this reason, this article introduces the production method of the symmetry of the fork body of the lower tuning fork liquid level switch.Generally, there are two main methods for ensuring the symmetry of the tuning fork liquid level switch fork body in production:The first type: precision casting process is the prerequisite to ensure the high symmetry of the fork bodyDue to the complexity and variety of measurement media in industrial sites, in order to meet the measurement needs of complex working conditions, stainless steel with better corrosion resistance has become the first choice for the production of tuning fork liquid level switch forks in the industrial control field.But no matter from the aspect of processing economy or difficulty, to realize the high symmetry of the tuning fork, it is inseparable from the precision casting process.This is because the material, shape, length, thickness and other parameters of the tuning fork determine the natural vibration frequency of the tuning fork, and the natural vibration frequency is an important parameter for the tuning fork liquid level switch to detect the liquid level. Therefore, in addition to satisfying the high symmetry of the tuning fork body, precision casting is also indispensable for the high precision of the tuning fork body size.The second type: tuning is an important supplement and guarantee for the high symmetry of the tuning forkFrom the technological level, the precision casting level cannot yet guarantee that the casting parts meet the production requirements of the liquid level switch 100%.In terms of production cost, the higher the symmetry requirement of the fork body casting, the higher the production cost will inevitably be.Therefore, in the actual production process, it is necessary to add a tuning link and use necessary equipment to check the vibration parameters of each tuning fork body. The symmetry of the tuning fork body is corrected and improved by tuning, so that the tuning fork body meets the production requirements of the liquid level switch.It can be said that doing the above two points is the key to ensuring the symmetry of the fork body of the tuning fork liquid level switch, and it also determines whether the tuning fork can be successfully applied to the liquid level switch. As long as the production personnel in the field of industrial control instruments strictly follow the requirements of the above two points, the product quality of the tuning fork liquid level switch can be effectively improved.
Post time: 21-09-21