1. Overview.
A stepless screw pump is a pump that adjusts the displacement by changing the rotational speed of the screw. It has the advantages of high efficiency, stability, low noise, low maintenance, etc., so it has been widely used in many fields. This article will introduce in detail the working principle, characteristics, application and maintenance methods of continuously variable speed screw pump.
Second, the working principle.
The working principle of the infinitely variable speed screw pump is based on the mutual cooperation of the screw and the pump body. When the screw rotates, its spiral part forms a continuous sealed chamber with the pump body, and these chambers gradually expand axially to form a low-pressure zone. Due to the pressure difference, the liquid is drawn into the chamber and brought to the outlet end of the pump with the rotation of the screw. At the outlet end, the pressure of the liquid in the high-pressure zone is greater than the pressure in the low-pressure zone, thus draining the liquid from the pump.
3. Features. 1.High efficiency and stability: The continuously variable speed screw pump can achieve stable and efficient fluid transfer, with low energy consumption and high volumetric efficiency.
2.Low noise: Due to its simple internal structure and smooth operation, the noise generated is low.
3.Low maintenance: The stepless speed regulating screw pump has simple structure, easy maintenance and long service life, which reduces the trouble of frequent equipment replacement.
4.Adjustable flow rate: By changing the rotation speed of the screw, the flow rate of the pump can be adjusted to meet the flow demand under different working conditions.
5.Strong adaptability: the stepless speed regulating screw pump is suitable for a variety of fluid media, including viscous fluids and corrosive fluids.
Fourth, application. 1.Industrial production: stepless speed regulating screw pumps have been widely used in chemical, petroleum, food and other industrial production fields. For example, in the chemical industry, it can be used to transport chemical raw materials and products;In the petroleum industry, it can be used to convey ** and refined oil;In the food industry, it can be used to convey a variety of food materials.
2.Water conservancy engineering: stepless speed regulating screw pump can be used for irrigation, drainage, water transfer and other tasks of water conservancy projects. It can operate stably under harsh environmental conditions and provide reliable fluid transfer support for water conservancy projects.
3.Urban water supply and drainage: stepless speed regulating screw pump plays an important role in urban water supply and drainage system. It can be used for sewage treatment, rainwater drainage and other tasks to provide guarantee for the normal operation of the city.
4.Shipbuilding industry: The shipbuilding industry needs to transport a large number of various liquids, such as fuel oil, lubricating oil, etc. Continuously variable speed progressive cavity pumps can adapt to the complex environments in the marine industry and provide reliable fluid transfer solutions.
5. Maintenance methods.
1.Regular inspection: Regularly check whether the bearings, seals and other components of the pump are working normally, and replace them in time if they are worn or damaged.
2.Clean the pump body: Regularly clean the inside of the pump body to remove dirt and debris to ensure the cleanliness of fluid delivery.
3.Adjust the clearance: Regularly adjust the gap between the screw and the pump body to ensure the sealing effect and reduce energy consumption.
4.Lubricate the bearing: lubricate the bearing regularly to prolong the service life of the bearing and reduce the operating noise.
5.Preventive maintenance: Preventive maintenance plans are formulated for different working conditions, and preventive maintenance and overhaul are carried out regularly to ensure the normal operation and prolongation of the service life of the pump.
6. Summary. As an efficient and stable fluid transfer equipment, the stepless speed regulating screw pump has been widely used in many fields. Its simple construction, easy maintenance, and long service life make it the equipment of choice for many industrial production and fluid transfer tasks. In the process of use, reasonable selection and configuration should be carried out according to specific working conditions, and regular inspection and maintenance should be carried out in accordance with the maintenance method to ensure the normal operation of the equipment and prolong the service life.