In the complex production process of paper mills, pump equipment is of crucial importance, and plunger pumps stand out due to a host of advantages.

Plunger pumps offer excellent flow control. In the papermaking process, the addition amounts of chemicals such as sizing agents, retention aids, and defoamers need to be strictly controlled, which is directly related to paper quality. Through the precise movement of the plunger, plunger pumps can deliver a fixed volume of liquid in good accordance with process requirements, ensuring the chemical addition is accurate to the finest detail. This is something ordinary slurry pumps can hardly match—slurry pumps have low flow control precision and cannot meet the demand for fine chemical addition.

Its corrosion resistance is quite excellent. Paper mills use a large number of acid and alkali chemical solutions, such as the alkaline sodium hydroxide solution for pulping, and oxidants like hydrogen peroxide and chlorine dioxide for bleaching. The ceramic and other material components of plunger pumps have excellent chemical stability, enabling them to operate stably in highly corrosive environments, which greatly reduces the probability of equipment damage due to corrosion and maintenance costs. In contrast, although the flow-through components of ordinary slurry pumps have a certain degree of corrosion resistance, they are still slightly inferior when facing the complex and diverse highly corrosive chemicals in paper mills.

When handling the transfer of liquids containing fine fiber particles or impurities, plunger pumps exhibit excellent wear resistance. For instance, in pulp transfer, even if there are small amounts of poorly dispersed fiber bundles, they rarely cause severe wear to the plungers and cylinders. In contrast, when slurry pumps transfer media with a relatively high content of solid particles, components such as impellers and pump bodies wear out quickly. This requires frequent replacement of vulnerable parts, increasing maintenance workload and operating costs.

In addition, plunger pumps feature excellent sealing performance. The plunger and cylinder fit tightly together, which can effectively prevent liquid leakage. For toxic, harmful, or expensive chemical agents, this minimizes agent loss and environmental pollution. Their internal structure is relatively simple, and the ceramic surface is smooth, making it difficult for impurities to remain. When transporting materials that require high purity—such as special additives for high-grade paper—plunger pumps can well maintain the purity of the materials and avoid cross-contamination.

To summarize, plunger pumps, with their advantages such as excellent flow control, strong corrosion resistance, high wear resistance, good sealing performance, and low susceptibility to impurity residue, fully meet the complex production needs of paper mills. They have thus become a reliable helper for paper mills to ensure efficient, stable, and high-quality production operations.

Why Choose Huaxing Plunger Pumps?

Huaxing plunger pumps achieve fluid suction and discharge through the "reciprocating movement of the plunger inside the cylinder". Their structural characteristics determine that they can address the core pain points in papermaking fluid transportation:

1. Ultra-high pressure output to meet high-pressure process requirements
   Processes in papermaking such as press roll cleaning, high-pressure chemical injection, and high-pressure sludge transportation require ultra-high pressure fluids ranging from 10-30MPa.

2. Adaptability to high viscosity/high impurity media, anti-clogging and anti-wear
   Pulp (containing long fibers, talc and other fillers) and sludge (containing slag particles) are high viscosity and high impurity media. Ordinary pumps (such as centrifugal pumps) are prone to clogging or frequent failures due to media wrapping around impellers and wearing seals, while Huaxing plunger pumps have inherent advantages:

3. Excellent flow controllability to ensure stable papermaking quality
   Papermaking production has high requirements for the uniformity of "basis weight (paper weight per unit area), sizing amount, and dye concentration" (for example, a basis weight deviation exceeding ±2% will lead to paper web scrapping), and flow stability directly determines these key indicators:
4. High volumetric efficiency, reducing energy consumption costs
   Papermaking is a high-energy-consuming industry, and the operating energy consumption of pumps accounts for 15%-20% of the total energy consumption. Huaxing plunger pumps have high volumetric efficiency (usually > 95%, much higher than 70%-85% of centrifugal pumps).
5. Sturdy and durable structure, adapting to harsh working conditions
   Papermaking workshops have humid environments, much dust, and most media are corrosive (such as chlorine in bleaching agents, acidic waste liquids), which have high requirements for pump durability:

Summary：

The essence of paper mills choosing plunger pumps lies in the "excellent match between process requirements and pump type characteristics": their ultra-high pressure, high viscosity anti-clogging performance, excellent flow control, high efficiency, and durability precisely address the transportation pain points throughout the entire papermaking process from pulping to waste liquid treatment. They not only ensure the stable quality of paper products but also reduce energy consumption and maintenance costs, ultimately creating higher economic benefits for enterprises. Therefore, plunger pumps have become the "core equipment" for high-pressure and high-precision fluid transportation in the papermaking industry.