What are the main features of single-stage centrifugal pumps?

　　Centrifugal pumps have many advantages over other types of pumps, such as: centrifugal pumps have a uniform flow, smooth operation, low vibration, high speed, low cost of equipment installation and maintenance, and a wide range of applications (including the flow rate, head and adaptability to the nature of the medium). Therefore, the centrifugal pump is a kind of pump which is widely used in industrial production.

　　First, single-stage single-suction centrifugal pump structure introduction:

　　1, the pump is vertical structure, import and export caliber is the same, and is located in a center line, can be like a valve the same equipment in any direction in the pipeline, compact and beautiful appearance, covers an area of small, easy to decorate.

　　2, impeller equipment directly in the motor of the extended shaft, short axial dimensions, compact structure, pump and motor bearing configuration is reasonable, can effectively balance the radial and axial loads, and then ensure that the pump's operational balance, small oscillation, low noise.

　　3, the use of high-quality mechanical sealing, operating life of more than 5000 hours.

　　4、With outdoor type motor, it can work outdoor without building pump room, which can reduce the infrastructure investment and operating costs.

　　5、According to the user's demand, it can be equipped with full-automatic safety control cabinet to maintain the pump's leakage of water and electricity, overload and over temperature, which improves the safety and reliability of the product.

　　6, according to the application requirements and flow and head needs to choose the pump series, parallel operation method.

　　7, according to the requirements of the pipeline selection of the pump vertical and horizontal equipment.

　　Second, single-stage single-suction centrifugal pump main features:

　　Direct connection design: the design of this series of pumps adopts the way of extending the motor shaft to drive the impeller directly, canceling the rotor support components of general centrifugal pumps, without coupling, and the impeller runs coaxially with the motor. The high concentricity of the components makes it run smoothly, with low vibration and low noise, which is in line with the environmental protection design requirements. Because it is a direct design, it occupies a small area and is light in weight; due to the adoption of the back-pulling structure, it is possible to withdraw the motor and rotor parts without dismantling the inlet and outlet pipes, and it is extremely convenient for installation and maintenance.

　　Double runner design: part of the pump body adopts double runner design to reduce radial force, thus prolonging the life of mechanical seal and motor and bearing.

　　Non-leakage mechanical seal design: the series of pumps according to the use of different media can be respectively adopted joint venture or imported high-level temperature and corrosion-resistant carbide mechanical seals, thus solving the centrifugal pump packing, ceramic seals, serious leakage problems to ensure that the operating site is clean and tidy, in line with the requirements of environmental protection.

　　Horizontal single-stage single-suction centrifugal pump product use

　　1、Horizontal single-stage single-suction centrifugal pump for conveying water and other liquids similar to water, know the county in industrial and urban water supply and drainage, high-rise building water supply, water supply to high-rise buildings, garden sprinkler irrigation, fire fighting pressure, long-distance conveying, HVAC refrigeration circulating, bathrooms and other pressurization and equipment supporting. Use temperature ≤ 80 ℃.

　　2、Horizontal single-stage single-suction centrifugal pump is suitable for: gold treatment, chemical industry, textile, papermaking, and hot water booster in hotels and restaurants, transportation and urban heating system. Use temperature ≤ 120 ℃.

　　3、Horizontal single-stage single-suction centrifugal pumps are used for conveying gasoline, kerosene, diesel oil and other oil products or flammable and explosive liquids. The temperature of the conveyed medium is -20℃~+120℃.

　　Four, horizontal single-stage single-suction centrifugal pump working conditions

　　1、Maximum working pressure of the relevant authority system≤1.6MPa, when the working pressure of the pump system is greater than or more than 1.6MPa, it should be proposed separately when it is used first.

　　2、Ambient temperature <40℃, relative humidity <95℃.

　　3、The content of solid particles in the conveyed medium is not more than 0.1% of the unit volume, and the particle size is <0.2mm.

　　Fifth, the difference between multi-stage centrifugal pumps and single-stage centrifugal pumps

　　Single-stage centrifugal pump is definitely the basis of multi-stage centrifugal pump, both are centrifugal pumps, the same size of the impeller connected in series, and installed in the same pump, the formation of multi-stage centrifugal pump.

　　1, Therefore, the most obvious difference between the two is the impeller. Single-stage centrifugal pumps have only one impeller 5261 impellers, and the number of impellers of multistage centrifugal pumps is greater than 2 or more stages. Single-stage centrifugal pump refers to only one impeller, the highest head is only 125 meters of pump ;.

　　2, Multi-stage centrifugal pump is a pump with two or more impellers. The maximum head can exceed 125 meters. It can improve the service life of the pump and reduce the noise of the equipment, but the maintenance and repair of multistage pumps are more difficult than single-stage pumps.

　　3, the pressure is formed by stacking each impeller. The difference between the impellers of single-stage and multi-stage centrifugal pumps will cause the pressure difference between the two. Single-stage centrifugal pumps have low pressure and large flow, while multi-stage centrifugal pumps have high pressure and small flow.

　　4, multi-stage centrifugal pump head is high, the axial force is greater than the single-stage pump. Single-stage centrifugal pump head