原文:
①阀体、阀板材质应采用球墨铸铁。 ②阀杆材质。闸阀应为不锈钢阀杆(2Cr13),蝶阀应为不锈钢嵌包的阀杆;
③螺母材质。其应采用铸铝黄铜或铸铝青铜,其硬度和强度均大于阀杆; ④密封面的材质
A、普通楔式闸阀。铜环应为铸铝黄铜或铸铝青铜;
B、软密封蝶阀。密封面通常采用丁晴橡胶及三元乙丙橡胶等,严禁采用再生橡胶。密封材质必须满足卫生指标要求,并且要标明抗老化实验和耐磨性实验的有关数据;
⑤阀轴填料。应以V型
橡胶圈或碳素纤维浸聚四氟乙烯填料,应保证密封性能良好,不渗漏;在启闭频繁时要求填料不活动,不老化,长期保持密封效果,应保证至少十年不换或更长时间。
2、变速传动箱的技术要求 ①箱体材质应与阀体材质一致; ②传动箱要求密封、能承受不低于3米水深的浸泡而不漏;
③箱体内无杂物,齿轮交合部位应有润滑脂保护。
3、软密封蝶阀的结构技术要求: ①阀门关闭一律应为顺时针方向转动; ②阀体上应设有蝶板限位块,其强度须大于阀门的开启扭矩;
③密封圈应固定在阀体上,密封圈压板应燕尾压板并带可靠防松脱措施; ④阀门启闭操作端应为方榫,且尺寸标准化,并面向地面;
⑤阀门启闭程度的刻度线,应铸造在变速箱盖上或转换方向后的显示盘外壳上,一律面,刻度线刷上荧光粉,以示醒目。
4、阀体内接触水流部分及阀板应有防腐措施,如清砂除锈后喷涂粉状xx环氧树脂。 5、对阀门标牌的要求
阀门出厂时阀门厂应给每个阀门一个固定的编号,其编号和阀门型号、口径、公称压力、阀门编号、生产厂家、生产日期等阀门标牌内容应固定在阀体上。
“ Valve material requirements ”是由提供的阀门行业新闻,译文仅供参考。另外,中国气动阀门网还提供相关产品搜索: 、 、 、 、 、 、 、 、 、 等。
译文:
① body, ductile iron disc material to be used. ② stem material.
Valve should be stainless steel stem (2Cr13), butterfly valve of
stainless steel embedded in the package should stem; ③ nut
material. It should be brass or cast aluminum cast aluminum bronze,
its hardness and strength are greater than the stem; ④ sealing
surface of the material A, normal wedge gate valve. Copper ring
should be brass or cast aluminum and cast aluminum bronze; B, soft
seal butterfly valve. Sealing surface usually NBR and EPDM rubber,
recycled rubber is strictly prohibited. Sealing material must meet
the requirements of health indicators, and to identify anti-aging
test and wear test of the data; ⑤ valve shaft packing. Should be
V-type rubber ring or a carbon fiber soaked PTFE packing, should
ensure good sealing performance, are not
leaking; the frequent opening and closing inactive filler when
required, not aging, long-term effects remain sealed, should ensure
that at least ten years no change or more. 2 speed gear box of the
technical requirements ① box material should be consistent with the
body material; ② gearbox sealing requirements, withstand not less
than 3 m depth of immersion without leakage; ③ cabinets without
debris, gear lubricant oral sex should be
co-location protection. 3, soft seal butterfly valve structure
technical requirements: ① valve should be closed clockwise
rotation; ② body should have the disc stopper block, the strength
of torque to be greater than the valve opening; ③ should be fixed
in the valve seal, the seal plate and the plate should dovetail
with reliable anti-loosening measures; ④ valves open and close
operation should end mortise and tenon, and the size standard, and
for the ground; Valves open and close levels of scale ⑤ line,
should be cast in the gearbox cover or change the direction of the
cover plate after the show, all surface, scale wire brush on the
phosphor, to show eye-catching. 4, valve body parts and the valve
plate contact with water should be corrosion measures, such as sand
rust after spraying non-toxic powder
epoxy. 5, on signs demand valve Valve factory valves valves to each
plant should be a fixed number, the number and valve type,
diameter, nominal pressure, valve number, manufacturer, production
date of the contents of the valve plate to be fixed to the body
.
原文来源:
已投稿到: |
|
---|