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Centrifugal, self-priming, and vacuum chemical pumps

Varieties of Chemical Pumps

Chemical pumps play a crucial role in various industries where handling aggressive, corrosive, or hazardous liquids is necessary. They not only ensure uninterrupted delivery and movement of chemical substances in production processes but also guarantee the safety and efficiency of these processes. From the petrochemical industry to pharmaceuticals, from food production to wastewater treatment, chemical pumps are essential equipment that helps maintain strict quality and safety standards.


Chemical pumps

There are several types of chemical pumps, each designed for specific tasks and possessing unique characteristics that enable efficient handling of chemical substances:

  • Centrifugal Pumps: Widely used due to their simplicity, reliability, and ability to transfer large volumes of liquid;
  • Self-priming Pumps: These devices can autonomously prime liquid, making them ideal for handling gas-liquid mixtures or situations where liquid needs to be drawn from underground sources;
  • Chemical Vacuum Pumps: Designed to create a vacuum in systems necessary for processes requiring pressure reduction, such as filtration, distillation, or drying.

The choice of pump type depends on specific requirements of the production process, chemical environment, and operational parameters. While centrifugal pumps are often a universal solution, situations requiring more control over the process or handling particularly hazardous substances may necessitate more specialized self-priming or chemical vacuum pumps.

Centrifugal Pumps: The Foundation of Many Processes

The operation principle of a centrifugal pump involves converting mechanical rotational energy into the energy of liquid flow. This is achieved by the rotation of the impeller with blades, creating centrifugal force that draws in and directs the liquid to the discharge outlet. The design of centrifugal pumps ensures their reliability and ability to handle large liquid volumes, making them indispensable in various industries.

The applications of centrifugal pumps are extremely wide due to their advantages such as high performance, long service life, and the ability to handle different types of liquids. They are used in water supply, heating, cooling, fire protection systems, and many other fields. Chemical centrifugal pumps, specifically designed for the transfer of aggressive, toxic, and explosive substances in the chemical industry, hold a significant place. Their construction provides high chemical resistance of materials, allowing the safe transport of chemical reagents.

Self-priming Pumps: When Autonomy is Needed


Self-priming Pumps

The main feature of these devices lies in their ability to independently draw in the working medium from a reservoir by creating negative pressure. The self-priming mechanism begins with removing air from the pump’s suction line, creating a vacuum that aids in lifting the liquid. This makes them ideal for situations where the liquid source is below the pump level or when quick system startup without prior preparation is needed.

The diverse areas of self-priming pump application include agriculture, construction, food industry, and of course, the chemical industry. The benefits of such pumps are especially crucial where equipment reliability and autonomy are required. Here are some key advantages of self-priming pumps:

  • The ability to self-prime allows the pump to be used in conditions without external pressure;
  • Simple design ensures ease of maintenance and repair;
  • High efficiency and energy saving due to minimized need for primary liquid priming;
  • Versatility in handling various types of liquids, including aggressive and contaminated environments.

One specialized type is the chemical self-priming pump, designed to work with aggressive chemical substances. These pumps are made from corrosion-resistant materials that allow the safe transport of chemical reagents, acids, alkalis, and other hazardous liquids.

Vacuum Pumps: Creating Low Pressure

The principle of vacuum pump operation is based on removing gas or air molecules from a closed volume, leading to pressure reduction inside that volume. There are various types of vacuum pumps, including:

  • Rotary pumps: Use rotating blades to move gas;
  • Diaphragm pumps: Operate through the oscillations of a flexible diaphragm;
  • Steam jet pumps: Create a vacuum using a stream of the working fluid, often water or steam.

In the chemical industry, vacuum pumps find broad application as many chemical processes require precise pressure control to ensure the right reaction, prevent oxidation, or maintain conditions for distillation. Vacuum pumps can be used for accelerating evaporation, drying, degassing, filtration, and pneumatic conveying. One of the main advantages of vacuum pumps in the chemical industry is their ability to provide stable low pressure, crucial for maintaining the quality and safety of chemical processes.

Furthermore, vacuum pumps have high chemical resistance, allowing them to be used in aggressive environments typical for the chemical industry. Their design minimizes contact with the working medium, reducing the risk of corrosion and wear, thus extending the equipment’s service life. The efficiency of vacuum pumps and their ability to work in a wide range of conditions make them an integral part of chemical production, ensuring reliability and increased process productivity.

Choosing the Right Chemical Pump

When selecting a chemical pump, it is essential to consider several key characteristics to ensure process efficiency and safety. It is crucial to compare parameters such as:

  • Chemical resistance of materials;
  • Performance;
  • Operating pressure;
  • Temperature limitations;
  • Compatibility with transferred substances.

Centrifugal pumps are generally preferred for large volumes and continuous operation, offering high performance and the ability to generate significant pressure. Self-priming pumps are good for handling gas-containing liquids and media with air locks, while vacuum pumps are indispensable for working with gases and vapor mixtures, where maintaining low pressure is necessary.

Contact “LET” Company

Before purchasing a chemical pump, the “LET” company offers several recommendations that can help make the right choice of pump for specific tasks:

  1. Determine chemical compatibility: Ensure that the pump materials are compatible with the chemicals being transferred to avoid corrosion and wear.
  2. Evaluate operating conditions: Consider the required pressure and temperature range, as well as the ability to work in aggressive environments.
  3. Think about performance: Choose a pump with the necessary performance to provide the required head and flow.
  4. Don’t forget about maintenance: Prefer pumps that are easy to service and have accessible spare parts.

When choosing a pump for specific tasks, it is also important to consider operating costs and the possibility of equipment upgrades. It is always useful to consult with our specialists to ensure the most suitable pump selection that meets all requirements and provides reliability and durability in chemical processes.

Call ☎ +7 (495) 232-00-66.

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