隔膜式加药泵吸排液阀改进探讨
为避免吸排液阀过早失效，设计在阀球的结构和材料上进行改进，加药泵使阀的有效过流面积尽可能的大，保证其具有合适的导向间隙，能获得良好的导向对中性，有足够的寿命，并易于维修。密封阀座由唇形接触改为矩形密封套，材质采用聚氨脂，邵氏硬度为60-65。在阀球导向结构上采用对称的4条三角形镶嵌式导向筋，使阀球侧隙始终保持稳定，阀球沿轴线平稳地上下运动，同时减少其与阀球的接触面积，减少磨损。在结构方面，为保证阀球在使用中具有稳定的跳高尺寸，除提高密封阀座的耐磨性、减少磨损外，在阀球跳起的上端增加缓冲橡胶垫，以消除阀球向上跳起时的冲击力对限高支架的磨损。在吸排液阀的整体结构方面，采用了组合式结构，由阀底座、单向阀、压板及压紧螺栓组成，使其在使用中可方便拆卸、安装、检查及更换阀体各部件，避免了直连式结构中拆卸造成泵头连接螺纹的损伤。改进后的加药泵吸排液阀具有设计合理的泵阀结构和制作材料，保证了在使用周期内不更换易损件(图\文www.wxjpby.com/)。
中译英：
In order to avoid the premature failure of suction and discharge valve, ball valve design in structure and materials were improved, dosing pump valve effective flow area as large as possible, ensuring an appropriate orientation space, can obtain the good guidance to the neutral, have long service life, and easy to repair. Sealing valve seat by a lip contact is changed into a rectangular sealing sleeve, is made of polyurethane, Shaw hardness 60-65. The valve ball guide structure with symmetric 4 triangles inlaid rib guide, so that the ball valve backlash has remained stable, the valve ball along the axis of smooth moves up and down, while reducing with the valve ball contact area, reducing wear. In terms of structure, in order to ensure the ball valve in use with a stable high jump size, in addition to improve the sealing valve seat wear resistance, reduce wear, the valve ball to upper increased buffering rubber pad, to remove the valve ball up when the impact force on the high limit bracket wear. In the suction and discharge valve structure, adopts a combined structure, composed of a valve base, a one-way valve, pressure plate and the clamping bolt component, which can be conveniently disassembled, installation, inspection and replacement body parts, to avoid the type of detaching the resulting pump head connecting screw thread damage. The improved dosing pump suction valve has the advantages of reasonable design of the valve structure and production of materials, ensure that the use of periods with no replacement of wearing parts.
