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Fecal sewage is a kind of sewage with a lot of fibers and debris. In the transportation of fecal sewage, the entanglement of fibers and hair has always been the biggest problem that plagues users. Many users have used screws at the station for raw water transportation. In pump experience, screw pumps use the rotation of the screw to suck and discharge liquid: the rotor and the stator are closely fitted and meshed with each other; between the suction and discharge ports of the pump, it is divided into one or more sealed spaces. The liquid in the suction chamber is enclosed therein, and continuously moves from the suction chamber to the discharge end in the axial direction of the screw.
Using experience shows that before the material enters the cavity formed by the rotor and the stator, it is easy to entangle in the part of the rotating shaft, and even cause the blockage of the entrance of the stator and rotor cavity. When the pump body is blocked, in view of the complicated structure of the screw pump, the complicated and time-consuming maintenance work is a headache.
When conveying such a medium with strong abrasion, the abrasion resistance of the pump and the easy maintenance of the wearing parts are the issues that users are more concerned about. Rohde cam pumps have a variety of pump types and flexible configurations with strong applicability. The wear-resistant Rohde cam pump has strong applicability for conveying medium with high sand content.
In the transportation process of high turbidity sewage, Rohde cam rotor pump has the following advantages:
■ Solutions to wear problems
Full-lined lining board:
When conveying medium with high sand content, Rohde cam rotor pumps are designed with internal liners (that is, four liners each in the axial and radial directions). These four liners completely cover the entire inner wall of the pump casing. The abrasive fluid will not contact the inner wall of the pump casing during the transportation. The material of the lining plate is laser-hardened hard steel 1.8714 and super-strength stainless steel. Its abrasion resistance far exceeds gray cast iron, so the service life is longer. long. At the same time, the radial lining and the axial lining can be replaced online. Just unscrew the four screws on the pump cover, and the maintenance work can be completed through the opened pump cover.
Rohde cam pumps have various types of rotors to choose from; in this project, Rohde patented technology features rotors: three-leaf spiral, fully rubber-coated, optimized design. Optimizing the rotor not only prevents backflow caused by wear, but also maintains stable and efficient transportation. It also further extends the operating life of the rotor and reduces maintenance costs.
All consumable parts of Rohde cam pumps (including the lining plate) can be replaced online. Just unscrew the four screws on the pump cover, and perform maintenance and replacement directly through the opened pump cover. There is no need to remove the pipeline or the pump body. Removed. In addition, thanks to the user-friendly modular design of the Rohde cam pump, all maintenance work is simple and easy, and there are no high requirements for technicians. After half an hour of training, ordinary workers can all work within half an hour. Independently replace the wearing parts. This greatly shortens the downtime for maintenance.
■ Other technical highlights
Fewer spare parts: Most users who have experience with the use of screw pumps are deeply impressed by the complexity and cost of spare parts, and therefore have a headache. Users are very concerned about the total cost of operation. The amount of one-time investment is not the only criterion for determining whether the equipment meets the budget. The number of spare parts, service life and replacement costs are factors that determine the overall applicability of the equipment. Rohde cam pumps have been developed and improved to meet customer needs. With the current Rohde cam pump, the number of spare parts is the smallest in the world. Taking the Baotou fecal sewage transportation project as an example, only the two spare parts of the rotor and the mechanical seal are used. The replacement cycle is approximately 2-3 years.
Flow is easy to control: The flow of Rohde cam pump is directly proportional to the speed. The user only needs to set the frequency converter according to the working conditions, and the flow can be controlled.
Furthermore, Rohde cam rotor pumps also have the characteristics of high pressure, compact structure, and small footprint. Finally, Rohde cam rotor pumps are always made of the strongest and most suitable materials for practical conditions. Will provide customers with accurate support and service.
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