Pump head structure diagram

Working principle

The rotor pump achieves the purpose of transporting liquids by the periodic transformation of multiple fixed volume conveying units in the working chamber. The mechanical energy of the prime mover is directly converted into pressure energy for transporting liquids by the pump. The flow rate of the pump depends only on the change in the volume of the working chamber and its change frequency per unit time, and is independent of the discharge pressure. The specific working principle is shown in the diagram.

Application characteristics

Strong compatibility of rotor pumps, suitable for a wide range of media:
Since rotor pumps are generally not limited by the physical and chemical properties of the media during actual use, they have been widely applied and promoted in various industries. Currently, they are mainly used in daily chemicals, food and beverages, fruit juice, chemical industry, condiments, candy, and other industries.

High viscosity material transportation:
As a positive displacement pump, the low speed, high output torque, and high-temperature resistance characteristics allow rotor pumps to excel in the field of outputting high viscosity and high-temperature materials. Its unique working principle combined with a powerful drive system ensures that the rotor pump can output strong driving torque at low speeds, allowing for continuous and non-stopping transportation of materials while ensuring that the material properties are not damaged during the transportation process. This type of pump can transport media with a viscosity of up to 1,000,000 CP.

Thin medium transportation:
When transporting particularly thin media, especially when a non-pulsating output of thin media is required, rotor pumps also show significant advantages. The drive system equipped with the rotor pump can operate at higher speeds when the viscosity of the transported medium decreases and the internal leakage increases, while ensuring a constant output flow rate.

Sanitary grade transportation:
All parts in contact with the material are made of stainless steel that meets sanitary conditions, capable of meeting the needs of all food, beverage, pharmaceutical, chemical, daily chemical, and corrosion-resistant applications.

Insulated structure transportation:
We can provide rotor pumps equipped with insulation jacket functions, which can ensure that the transported materials maintain a constant temperature during the transportation process. This is especially important for materials that are prone to solidification at low temperatures, preventing condensation during transportation.

Almost no wear parts:
There is no wear of any parts during the operation of the rotor pump (except for mechanical seals). All parts in contact with the material are made of stainless steel. The main core working part, the rotor, operates synchronously, maintaining a certain gap between each other, preventing any contact and theoretical wear. The rotor pump can operate in various environments at temperatures up to 220 degrees.

Water flushing mechanical seal:
We also provide mechanical seal structures with water flushing functions, which keep the mechanical seal surface lubricated and cooled during operation, and help remove impurities from the mechanical seal surface and improve the working environment of the mechanical seal.

Performance characteristics

Constant output flow rate:
Under certain working frequency conditions, the output flow rate of the rotor pump is constant. From the working principle of the rotor pump, the output flow rate only depends on the volume of its working chamber and its working frequency. The volume of the working chamber of a device when it leaves the factory is actually already determined, and the only factor that can affect its flow rate is its working frequency; it is (theoretically) independent of the discharge pressure and the physical and chemical properties of the output medium (liquid), such as temperature and viscosity (in practice, due to different discharge pressures of the medium properties, the internal leakage in the pump's working chamber also varies, which significantly affects the pump's flow rate). When the pump's rotation frequency per minute is constant, the pump's flow rate is also constant.

The pump's pressure depends on the pipeline characteristics:
The output pressure of the rotor pump cannot be set by the pump itself, but depends on the pipeline characteristics of the pump installation, and is independent of the flow rate. This means that the output pressure of the rotor pump is generated by the resistance in its pipeline, and the pump itself does not generate pressure.

Strong adaptability to the transported medium (liquid):
In principle, the rotor pump can transport any medium, almost without being limited by the physical or chemical properties of the medium, which is why we sometimes refer to the rotor pump as a rotor conveying pump. Of course, in practical applications, there are times when it cannot adapt. However, when such situations arise, it is mostly due to the manufacturing materials and processes and sealing technology of the pump that cannot be resolved at the moment.

Application fields

Daily chemicals:AES, LAS, AOS, MES, K12, glycerin, sorbitol, shower gel, skincare cream, shampoo, hand soap, toothpaste, soap, laundry powder slurry, etc.

Fine chemicals:Dyes, pigments, various slurries, chemical additives, silicone oil, leather oil, etc.

Food:Chocolate, condensed milk, yogurt, honey, syrup, sucrose, jam, ice cream, milk, yeast slurry, meat sauce, jelly, condiments, soybean protein, flour slurry, etc.

Papermaking:Polyacrylamide (PAM), calcium carbonate, starch paste, styrene butadiene latex, rosin glue, pulp, fillers, dry strength agents, wet strength agents, retention and filtration aids, defoamers, water treatment chemicals, etc.

Chemical fibers:Viscose, PVA, vinylon, acrylic, polyester, polyester, polypropylene, synthetic fibers, functional fibers, etc.

Pharmaceuticals:Various ointments, pharmaceutical emulsions, paste for pills, syrups, and medications.

Coating:Ink, resin, additives, organic solvents, etc.

Technical parameters