The geometrical conditions that the backstop can be run in gear have been educed by researching the movement of the components 研究了在逆止器工作过程中个相关零件的运动规律，并得出逆止器正常工作的几何参数条件。
H the high - raisepitch of pump also must install inverted - end valve at export - pipeline , to prevent the water - hammer of closed suddenly to destroy 8扬程高的泵在出口管路上还应该安装逆止阀，以防突然停机的水锤破坏
This paper put forward a new type backstop that transfer the backstop moment by the meshing components , and completed the design of the backstop 本文提出了一种新型的由啮合元件传递逆止力矩的啮合式非接触逆止器，并完成了逆止器的设计。
The paper analyzed the external forces of the backstop , established the dynamics model of the backstop being run , and analyzed the dynamic load of the backstop 分析了逆止器的受力情况，建立了逆止器工作的动力学模型并对逆止器进行动载荷分析。
Non - return ( stop - check ) valves provide the same function as a globe valve with the addition of providing piston - lift - check valve protection in the event of backflow 逆止阀(截止止回阀)具有与截止阀相同的功能，还有活塞提升式止回阀的功能，防止出现意外的回流。
Water supplying pipe in front of the coal economizer should be installed with a stop valve and check valve for the factory using boiler of mother tube water supplying 7采用母管制供水的电厂，进入每台锅炉省煤器前的给水支管均应装设截止阀与逆止阀。两阀应紧接，按水流方向逆止阀在前。
Abstract : a simple , economic and effective treatment method has been put forward in this paper after analysing the phenomenon which the reverser of inclining belt conveyor often happens turning back during working process 文摘:通过对倾斜式带式输送机在生产中经常出现逆止器翻背现象的分析，提出了简单、经济、有效的处理方案。
Abstract : according to the characteristics of solid - liquid two - phase flow , the equation of motion and the equation of continuity for hammer computation are deduced in this paper . the equations are applied to analyze the effect of different prevention deveces used to relieve water hammer pressure in pipeline transport with displacement pumps . it is concluded that the air vessel and pressure relief valve are better than other devices 文摘:本文针对固液两相流的特点，建立了水击计算的运动方程及连续方程，并采用新方程对矿山常采用的容积泵输送中使用的储气罐、泄压阀、缓闭逆止阀等减缓水击压力的防护措施进行了计算分析，得出储气罐、泄压阀减压效果最好的结论。
Xh rubber slowly - closing cut - off vavle is a new water supply and drainage vavle with full rubber structure , duck - mouthed appearance and functions or positive flow - in and reserve cut - off . according to thrust analysis and calculation as well as different operation mechanism and different rubber products by special processing . all will be open at weak hydraulic pressure is higher , the vavle gate will open more greatly and the water flow is greater . at reserve operation , the vavle gate closes naturally and seals tightly cut - off vavle ; the back pressure is higher , the vavle gate closes more tightly and the seal effect is better . it is used widely in various drainage exit to prevent from pouring backwards and flowing backwards in city planning , water conservancy and sewage disposal etc . it is the ideal productto replace flap vavle Xf型橡胶缓闭逆止阀是一种全橡胶结构外形呈“鸭嘴状” ，具有“正向流入反向逆止”功能的新型给排水阀门产品。它根据受力分析和受力计算，针对不同的工况，采用不同的设计机理，选用不同的橡胶配方，并按特殊工艺制作而成。正向工作时，水由进水口流入，微小的水压，便能打开阀门，水压越大，阀门开启越大，水流量越大。
And the paper analyzed the relations between the errors of the components and load distribution among the backstop piece , and put forward a method of translating the errors into a equivalent error . for the occasion of several backstops being used at the same time , the paper put forward a project of uniform load among the backstops 分析了误差对逆止器内部逆止块的载荷分布的影响，并提出各种误差转化为等效误差的方法；对多个逆止器同时使用的场合，提出了均载方案。
