爲(wèi)避免吸(xī)排液閥過早失(shī)效，設(shè)計在閥球(qiú)的結構(gòu)和材料上進(jìn)行改(gǎi)進， 加(jiā)藥泵 使閥的有效過(guò)流面積盡(jìn)可能的(de)大(dà)，保證(zhèng)其具有合适的導向間隙(xì)，能獲得良(liáng)好(hǎo)的導向(xiàng)對中(zhōng)性，有(yǒu)足夠(gòu)的(de)壽命，并(bìng)易于(yú)維修。密封閥(fá)座(zuò)由唇形(xíng)接觸改(gǎi)爲矩形(xíng)密(mì)封套(tào)，材質采用聚氨脂，邵氏硬(yìng)度爲(wèi)60-65。在閥(fá)球導向結(jié)構上采用(yòng)對稱(chēng)的4條三(sān)角形鑲(xiāng)嵌式導向筋，使(shǐ)閥球側隙始終(zhōng)保持穩定(dìng)，閥(fá)球(qiú)沿軸線平(píng)穩地(dì)上下運(yùn)動，同時(shí)減少(shǎo)其與閥球(qiú)的接觸面積，減少磨損。在結構(gòu)方面，爲(wèi)保證閥(fá)球在使用中具(jù)有穩(wěn)定的跳高尺(chǐ)寸，除提高密(mì)封閥座的(de)耐磨(mó)性、減少磨損外(wài)，在閥球(qiú)跳(tiào)起的(de)上端增加緩沖(chòng)橡膠墊，以(yǐ)消除(chú)閥球(qiú)向上跳(tiào)起(qǐ)時的沖擊(jī)力對限高(gāo)支架的磨(mó)損。在(zài)吸排(pái)液閥(fá)的整(zhěng)體結構方(fāng)面，采用了組合(hé)式結(jié)構，由(yóu)閥底(dǐ)座、單(dān)向閥(fá)、壓闆及壓緊螺栓組(zǔ)成，使其在使用(yòng)中可(kě)方便拆卸、安裝、檢查(chá)及更(gèng)換閥體各部件，避免(miǎn)了直連式(shì)結(jié)構(gòu)中拆卸造(zào)成泵頭連接螺(luó)紋的(de)損傷。改進(jìn)後的(de) 加藥泵 吸排液(yè)閥具(jù)有設(shè)計合理的泵閥結構和制作材(cái)料，保(bǎo)證(zhèng)了在使(shǐ)用周期(qī)内不更(gèng)換易(yì)損件(jiàn)(圖\文 xiaojikuaipao.top/ )。
中譯英：
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.