A constant pressure automatic stable fluid flow pressure, including the upper end cover, a lower end cover, a circular diaphragm plate of three parts, which is characterized in that the upper end cover 1.1 round 13 holes 14, a central spring tube 19, spring tube pressure spring 18 spring, upper pressure adjustable screw 16, spring tube outside the plastic cover 17; the 1.2 round of the diaphragm plate part includes: circular plastic film 11, round 12 stainless steel plate, stainless steel flat head screw 15, nut 21; 1.3 pressure spring 18 into the top end of the seat wire 16 circular groove end is sheathed on the flat stainless steel screws 15, three the center with the end cover on the central axis; the 1.4 circular end cover are respectively arranged on the 1 import flow pipe joint 10 and 20, the liquid inlet pipe joint through The glue pad 9 is communicated with the inlet hole 8, and the liquid inlet hole is communicated with the central cavity A of the central cavity. Cavity A spring seat 3, club shaped valve 4, valve seat 7, three with the axes of the end cover on the center of the valve seat; 1.4.1 7 center hole is horn shaped, and its shape, the size of the first 4 ball valve spring 5, flat stainless steel screws 15 three form automatic valve; 1.4.2 cylindrical spring 3 the periphery of a semicircular groove 2 semicircular ring, is arranged in a groove of O rubber ring and the wall of the center hole 6 close contact, the other end is threaded and can move in the A chamber; 1.5 third part is evenly distributed on the disc eight screws on the edge, the three into one.
【技术实现步骤摘要】
本技术涉及一种用于液体输送过程中自动恒定压力的装置,属于自动控制的液压机械设备。可应用于水质自动分析的仪器与仪表中,也可应用于水处理过程中的药液投加等自动控制设备中。在水质自动连续监测的仪器中,例如浊度连续测定仪、余氯连续测定仪等,为了提供恒定的水样流速,往往都要建立一个采集水样用的稳压水箱,此装置是设计一个大的箱体,其中设有进水管和出水管,为了使出水管中水流恒定,一般是在水箱的出水管上部设溢流口,大量的水从溢流口排出,从而使水箱的水位经常保持这一高度,在这样一个恒定的落差下,出水管中水流速保持恒定。有时,为了使出水管中压力增大,水箱水位就要相对地增高,水箱也就要做的很大很高,相应的溢流水的排出量也要增大,这是很不经济的,由于箱体增大,给仪器的安装调试都带来不便。虽然现在已有气体恒压装置有重量轻体积小的优点,但它还不适用于液体压力的控制。本技术的目的在于提供一种体积小,重量轻,又不需用泄流的自动恒压器,这种恒压器用于恒压时,当输入压力从0.5~4.0bar变化时,其输出压力可调整到某一数值,例如0.4bar,它能自动保持这个数值不变。另外,当恒压器用于恒定液流的流速时,当输入压力从0.5~4.0bar变化时,其输出液流的速度也可调整到一个要求的数值,例如保持11/min不变。本技术的目的是这样实现的有压力变化的液体P1通过进液管流入进液孔和空腔A,再通过阀门进入B腔,当压力弹簧的顶丝调定在某一位置,系统达到平衡,输出液体压力为P2。如果进液管压力P1有了微小上升,腔B内的压力随之增加,胶膜附板向上移动,原先与胶膜上的平头螺钉顶部相接触并保持平衡的球杆 ...
【技术保护点】
【技术特征摘要】
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