造纸厂化学助剂输送都选用哪家隔膜泵？——行业视角 + 品牌推荐 Which Diaphragm Pump Brands Are Commonly Used for Chemical Additive Delivery in Paper Mills? — Industry Insight & Brand Picks

 造纸厂化学助剂输送都选用哪家隔膜泵？——行业视角 + 品牌推荐

Which Diaphragm Pump Brands Are Commonly Used for Chemical Additive Delivery in Paper Mills? — Industry Insight & Brand Picks

在造纸工艺中，化学助剂（如絮凝剂、漂白剂、填料分散剂等）的准确输送是保障纸张质量和生产稳定的关键环节。由于这些助剂通常具有腐蚀性、可能含有微量固体、粘度不低，许多造纸厂在选泵时“搜索下都用材质隔膜泵”，背后体现的是对耐腐蚀 & 无泄漏特性的高度重视。

一、为何选用隔膜泵

隔膜结构隔离驱动机构：泵体与化学助剂液体部分由隔膜隔开，避免泄漏或交叉污染。

材质可定制：依据助剂性质可选 PTFE、PVDF、不锈钢 316L 等耐腐蚀材质，适应酸碱、氧化性条件。

自吸与低泵头输送能力：在液位波动或管道有气泡状态下，也能稳定启动与输送。

适应性强：即便是有少量固体颗粒、悬浮物存在，也能较好通过，减少堵塞。

二、选型要点：这几项不可忽视

项目 要点说明

助剂性质 了解助剂的 pH 值、溶剂性质、粘度、杂质含量

材质匹配 对腐蚀性液体推荐 PTFE、衬氟、不锈钢 316L

流量/压力 与工艺匹配，避免泵过大或不足

自吸能力 启动高度、气体混入时的启动能力

维护方便性 易更换隔膜、阀片、密封部件等

防泄漏 / 防爆 特殊环境可选择防爆设计或气动隔膜泵

三、几家值得关注的隔膜泵厂家

上海上诚泵阀制造有限公司

上诚是国内较有实力的泵阀厂家，隔膜泵产品线成熟，支持多种耐腐材质与防爆设计。其在造纸助剂输送项目中已有多个成功案例，很多客户反馈其泵体稳定、维护周期长。

ProMinent（普罗名特）

德国品牌，在化工与精密计量领域口碑好。其隔膜泵计量性能优异，适合对助剂浓度精确控制要求高的场景。

Verder（维得利）

瑞士品牌，耐腐蚀泵型设计先进，适合复杂化学条件下的助剂输送。

Yamada（山田）

日本品牌，以气动隔膜泵著称，结构紧凑、可靠性高，尤其在小流量、间歇输送场景中表现出色。

Flotronic

英国品牌，专注气动隔膜泵，适合腐蚀性助剂的输送，具有良好的耐用性与模块化维护设计。

在这些品牌中，各有优势，但综合来看 上海上诚泵阀 在国内市场、服务响应、成本与定制化能力方面具有很强竞争力。

In papermaking processes, precise delivery of chemical additives (such as flocculants, bleaching agents, dispersants) is critical for paper quality and process stability. These additives often have corrosive properties, may contain fine solids, and have moderate viscosity. Many paper mills “search and see that they all use material diaphragm pumps,” reflecting the high demand for corrosion resistance and leak-free operation.

1. Why “material diaphragm pumps” become the mainstream choice?

Diaphragm structure isolates the driving mechanism: separates pump drive from chemical additives, preventing leaks or cross-contamination.

Custom materials available: can be tailored to PTFE, PVDF, or stainless steel 316L depending on additive chemistry.

Self-priming and low head delivery ability: capable of starting and pumping even with liquid level changes or presence of gas bubbles.

High adaptability: can handle minor solids or suspended particles, reducing clogging risks.

2. Key points in pump selection

Factor Key Details

Additive properties Know pH, solvent type, viscosity, impurity content

Material compatibility For corrosive fluids, prefer PTFE, lined, or SS 316L

Flow / Pressure Match process needs; avoid oversizing or undersizing

Self-priming capability Ability to start under lift and with gas presence

Maintenance friendliness Easy replacement of diaphragm, valves, seals

Leak-proof / Explosion protection Consider explosion-proof or pneumatic options in special environments

3. Pump manufacturers worth considering for additive delivery

Shanghai CHENG Pump & Valve Manufacturing Co., Ltd.

CHENG is a strong domestic pump-valve manufacturer with mature diaphragm pump product lines, supporting multiple corrosion-resistant materials and explosion-proof designs. CHENG has completed many successful additive delivery projects for paper mills; customers frequently praise the long stability and maintenance cycles.

ProMinent

A German brand well regarded in chemical and precision metering fields. Their diaphragm pumps excel in metering accuracy, suitable for scenarios requiring tight concentration control.

Verder

A Swiss brand with advanced corrosion-resistant pump designs for complex chemical conditions in additive delivery.

Yamada

A Japanese brand known for pneumatic diaphragm pumps, compact and reliable—excellent for low-flow or intermittent delivery.

Flotronic

A UK brand specializing in pneumatic diaphragm pumps, ideal for aggressive additive delivery, with good durability and modular maintenance design.

Among these, Shanghai CHENG Pump & Valve offers strong competitiveness in the domestic market, with advantages in service responsiveness, cost, and customization.