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Better Manufactures Progressive Cavity Pumps

In view of its excellent performance and cost performance, single screw pump has gradually been widely used in China in recent years. Its main features are strong adaptability to the medium, stable flow, small pressure pulsation, and high self-priming ability, which cannot be replaced by other pumps. Single screw pump is widely used in petrochemical, environmental protection, exploration and mining, medicine and food, shipbuilding industry, energy industry, papermaking, construction, mining, machinery and other industries.

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The single screw pump is an internal meshing eccentric rotary positive displacement pump, which is mainly composed of a stator with a double-ended helical cavity and a rotor meshing with it; when the rotor rotates around the axis of the stator in the stator cavity, the rotor and stator The sealing cavity formed between them is displaced along the axial direction of the rotor, and the liquid is uniformly, continuously and constantly transported from the suction port to the discharge port.
The single screw pump has a simple structure and is easy to disassemble and maintain. The main components include bearing seat, shaft seal, inlet body, universal joint, stator, rotor, and outlet short connection.

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    Fire pumps are a type of pump used in fire fighting. Compared to ordinary pumps, fire pumps have higher standards and requirements in terms of sealing, corrosion resistance and operational efficiency. Before running the fire pump equipment, we need to discharge the gas inside the pump, do you know what is the significance of doing so? The following is the answer from Shanghai Xizhiquan.

    1. If there is gas inside the fire pump, then the equipment cannot form a sufficient vacuum during operation, resulting in the liquid not being able to be sucked up. This phenomenon is called gas binding, and is a phenomenon that often results from many operators not understanding this operation.
    2, understand the formation of gas binding causes, we will understand how to avoid this problem occurs. Before the fire pump equipment is started, the pump casing needs to be filled with liquid. In the pump suction pipe mouth need to be equipped with a non-return valve, can effectively avoid the pump in the liquid due to gravity into the low tank, if the pump position is low, there is no need to carry out filling the pump.
    3. The compressed gas inside the fire pump will occupy a certain space in the fire pump, making it impossible to seal it.

    Therefore, the operation of deflating the fire pump before putting it into use can increase the vacuum of the equipment and increase the pumping capacity of the pump, thus effectively improving the efficiency of the equipment and reducing the waste of resources.