The utility model provides an electronic igniter, which is characterized in that it is composed of a shell with an ignition port at the left end and a button port on it, an ignition tube connected with the ignition port at the left end of the shell, an ignition device fixedly connected with the button port, and a cable connected with the ignition device. The ignition device is composed of a rectangular shell and a button sliding connected with the upper end of the shell, The utility model is composed of a striker connected with the lower surface of the button, a power generation ceramic block fixedly connected with the bottom of the shell, a thimble connected with the upper surface of the power generation ceramic block, and a spring which is connected with the power generation ceramic block and sheathed outside the thimble. The electronic igniter has the characteristics of simple structure, safe and reliable, convenient operation, no need to use batteries, etc., which is not only economical and environmental protection, but also convenient for wide promotion. Jet Flame Camping BBQ Outdoor Lighter,Outdoor Gas Lighter Torch,Refillable BBQ Gas Lighter Shangqiu Zhengtu Hardware Technology Co,.Ltd , https://www.ztlighter.com
How to solve the friction between the control valve and packing resistance
Regulating valve is used to regulate the flow, pressure, temperature of the valve, it should have good conditioning and durability, but also should be easy to operate, easy maintenance. This adjustment is usually the use of automatic impulse adjustment system, namely, water level, steam flow and automatic control valve opening of the three impulses. As long as the steam flow and the valve opening signal (ie, the output signal and the input signal) match exactly, the water level can be kept within the required range. Through the analysis of the working condition of the automatic control valve, it can be seen that the work is frequently carried out. Regulating power is provided by the actuator to overcome various resistances, the structure of the actuator, the actuator rotation angle and the output arm length determines the adjustable stroke of the valve, the output torque determines the operating force of the valve, both of which are very close relationship. Through the calculation and the actual conditions required conditions, in order to meet the regulatory characteristics must have a certain adjustable stroke, to make the valve work in frequent motion, you must always overcome the friction between the moving parts and static parts resistance, the valve Frictional resistance between the rod and the filler, due to the increase of frictional resistance, so that many users use the department to increase the actuator parameters to increase the actual torque of the actuator to meet the automatic control valve flow adjustment, thus increasing the use of self Backup electrical load, that is, the use of cost. The use of flexible graphite is an effective measure to reduce the friction coefficient and reduce the frictional resistance. Flexible graphite, also known as expanded graphite or expanded graphite, is a new type of carbon graphite material, is a high-purity graphite products, carbon content of> 99%, which is made of natural flake graphite after special chemical treatment and heat treatment process does not contain any binder And impurities of pure graphite products, is made of worm-like graphite particles pressed under not too high pressure, and there is no consistent formation of the graphite crystal structure, which belong to the polycrystalline structure, that is, flexible graphite products by a number of ordered Of graphite ions from the accumulation of non-directional, flexible graphite in addition to guarantee the original characteristics of natural graphite, but also has some of the ordinary graphite does not have the special properties. ①high temperature resistance is one of its main characteristics, graphite is the element of the highest melting point of the periodic table, sub-atmospheric pressure at 32525 ℃ sublimation, 12MPa pressure, 3 750 ± 25 ℃ when the melt. Flexible graphite in the warming, the performance is almost constant, beyond the non-metallic temperature resistance, while maintaining good sealing. ② flexible graphite crystal layered structure, is a good self-lubricating solid lubricant. ③ flexible graphite reaction activation energy is high, the activation energy level of a direct impact on flexible graphite and other substances chemical reaction reaction speed, therefore, except that it reacts with oxygen at a higher temperature and hardened in a strong oxidizing medium , Applicable to the vast majority of acid, alkali, salt and organic solvents and water vapor seal. ④ flexibility makes graphite with the properties of soft packing, such as compressibility is conducive to different sealing conditions to choose the sealing capacity. The resilience allows the packing in the dynamic seal with the valve body to maintain regular fit. ⑤ on the gas, liquid, steam has a good impermeability. ⑥ conduction of heat and electricity have obvious anisotropy. ⑦ long life, can extend the replacement cycle filler, reducing maintenance workload, the material can be reused. ⑧ low coefficient of friction. The dry friction coefficient of flexible graphite filler and steel is 0105 ~ 0115. Asbestos filler and steel dry friction coefficient of 0107 ~ 0143, this feature is particularly useful for automatic control valve benefits.