The invention belongs to the technical field of dust filters for air brake valve elbows, and particularly relates to a universal dust filter for air brake valve elbows of railway locomotives and vehicles. In the technical background, compressed air is required to be used as a medium for transmitting brake signals for both railway locomotives and vehicle air brake valves, various brake valves are generally provided with exhaust elbows or similar parts to achieve the purposes of guiding the exhaust direction and preventing foreign matter from entering the valves, and internal and external threadelbows of standard parts of GB/T 3287 are widely sold in the market and reasonable in price, so that most of elbows of air brake valves can be selected, and the use amount of the elbows in air brakevalves of railway locomotives and vehicles is large. An air outlet dustproof device needs to be arranged for locomotives such as a rail grinding wagon working in severe environments with serious dustand particles, and foreign matter is prevented from entering a valve to influence the reliability and the service life of the brake valve. According to the scheme, a rubber dust cover is additionallyarranged on an elbow, the rubber dust cover is low in cost and convenient to install but has obvious defects, rubber can gradually deform and harden after being used for a period of time, the sealingand dust filtering effect becomes poor, and the service life of the dust cover is short. After the rubber dust cover deforms, if the dustproof effect needs to be continuously guaranteed, the whole rubber dust cover needs to be replaced. In order to solve the problems, the invention designs the dust filter for the air brake valve elbow in order to prolong the service life and improve the dust filtering effect.
空气制动阀弯头用滤尘器技术领域本发明专利属于空气滤尘器,特别涉及一种铁路机车、车辆空气制动阀弯头通用滤尘器。技术背景铁路机车和车辆空气制动阀均需使用压缩空气为介质进行制动信号传递,各种制动阀普遍设置有排风弯头或类似部件来达到引导排风方向、阻止异物进入阀内的目的,GB/T 3287的标准件内外丝弯头市面销售比较广泛且价格合理,因此空气制动阀弯头选型大多会选择此种弯头,在铁路机车、车辆空气制动阀用量较大。对于钢轨打磨车等工作在粉尘、颗粒严重的恶劣环境机车车辆需设置排风口防尘装置,防止异物不进入阀内影响制动阀的可靠性和使用寿命。排风口防尘装置使用较多的方案是为弯头加装橡胶防尘罩,橡胶防尘罩成本较低安装方便但缺点明显,橡胶本身的特性使用一段时间后会逐渐变形硬化,造成密封滤尘效果变差,防尘罩寿命低。在橡胶防尘罩出现变形后若要继续保证防尘效果,必须整体更换。本发明专利为解决上述问题,在提升使用寿命和滤尘效果,设计了空气制动阀弯头用滤尘器。
Dust filter for air brake valve elbow
空气制动阀弯头用滤尘器
2020-07-07
Patent
Elektronische Ressource
Chinesisch
Europäisches Patentamt | 2021
|BRAKE DISC ARRANGEMENT HAVING A BRAKE DUST PARTICLE FILTER
Europäisches Patentamt | 2021
|Method and Control Unit for Regenerating a Brake Dust Filter
Europäisches Patentamt | 2021
|