A single stage circulation centrifugal pump is a device that helps move fluids through a piping system. It uses centrifugal force to create flow and is typically used to transport liquids, but can also be used to move gases and other fluid-like substances. The pump consists of a rotating impeller that draws fluid into the center of the device and then propels it outwards to the pipe system. We are an experienced industry leader in developing a wide range of pump solutions for wholesalers, engineering contractors and other brands. Through our international connection and quality certification, we offer our components to your area without trouble, as we have proven time and again that we are committed to quality service. Mature supply chain with market understanding, streamline internal plant and equipment management.

We are a renown supplier of single stage centrifugal pumps for high flow, low pressure applications including water and light fuel transfer.We are professional centrifugal pump factory from China, our main products are multistage centrifugal pump, single stage circulating pipeline pump

Let us first understand the types of centrifugal pumps. According to the number of impellers, it can be divided into single-stage centrifugal pump and multi-stage centrifugal pump(Include Vertical Multistage Centrifugal Pump, Stainless Steel Multi-stage Centrifugal Pump, Immersion Multistage Centrifugal Pump, Horizontal Multistage Centrifugal Pump).

(1) There is only one impeller in the single-stage centrifugal pump, and the single-stage centrifugal pump is a widely used pump. Since the liquid is only energized once in the pump, the head is low. Figure 1 and Figure 2 are single-stage centrifugal pumps.

(2) Multistage centrifugal pump A centrifugal pump with two or more impellers is called a multistage centrifugal pump. The more stages, the higher the pressure. Figure 3 is a structural diagram of a multi-stage centrifugal pump.

TD100 Electric Pipeline Single Centrifugal Inline Circulating Pump

Single-Stage Centrifugal Pumps Defintion

Introduction to Single-Stage Centrifugal Pumps

The single-stage centrifugal pump includes a pump body, a pump cover, a motor with an output shaft, a pump shaft, a bearing seat, an impeller, a mechanical seal and a mechanical seal gland installed in the pump body, which are connected to the motor through an elongated elastic coupling. , the rotation direction of the pump, viewed from the drive end, is clockwise.

The single-stage centrifugal pump is characterized in that it also includes a wafer-type coupling arranged between the output shaft of the motor and the pump shaft, and a guide bearing mounted on the bearing seat to assist in supporting the pump shaft; the wafer-type coupling The coupling is rigidly connected with the motor output shaft and the pump shaft respectively, and there is a space distance between the motor output shaft and the pump shaft to facilitate the assembly and disassembly of the mechanical seal and the mechanical seal gland. When repairing or replacing the mechanical seal, it is not necessary to remove the motor and pump cover.

The single stage centrifugal pump is the most common type of pump used in many industries today. Its simple design and reliability make it an ideal choice for a wide range of applications. The main advantage of a single stage centrifugal pump is its ability to move large volumes of fluid at high pressures with relatively low maintenance requirements.

Single Stage Centrifugal Pump Features

1. High efficiency and energy saving: CFD computational fluid dynamics is used to analyze and calculate the relationship between the pressure distribution and velocity distribution in the pump, optimize the pump flow channel design, ensure that the pump has an efficient hydraulic profile, and improve the efficiency of the pump.

2. Easy installation and maintenance: the vertical pipeline structure, the inlet and outlet of the pump can be installed in any position and any direction of the pipeline like a valve, and the installation and maintenance are extremely convenient.

3. Stable operation, safe and reliable: The motor shaft and the water pump shaft are coaxial and direct connection, with high concentricity, stable operation, safety and reliability.

4. Stainless steel shaft sleeve: The mechanical seal position of the shaft is relatively easy to be corroded. Once the direct-connected pump shaft is corroded, it is easy to cause the mechanical seal to fail. The STG pump adopts a stainless steel shaft sleeve to avoid corrosion, improve shaft life and reduce operation and maintenance costs.

5. Bearing: In the motor equipped with the pump, the shaft extension end bearing below Y[Y2]280 (including the fan blade end bearing below Y180) adopts the closed bearing, and the maintenance of the motor bearing is free during normal use.

6. Mechanical seal: The base part of the mechanical seal generally adopts the rubber bellows structure, and the seal on the shaft of the traditional mechanical seal is changed from the line seal of the O-ring to the two-face seal of the rubber part, which improves the sealing effect in clean water.

Components of Single-stage Centrifugal Pump

A brief Description Structure of a Single-stage Centrifugal Pump

Single-stage centrifugal pumps are mainly composed of pump body, pump cover, impeller, shaft, bracket And other pump accessories. The impeller of the single-suction pump is cantilevered on the shaft end, the end face of the axis enters the water, and the discharge port is perpendicular to the axis of the pump. The pump body of the double-suction pump is horizontally split, and the impeller adopts a double-suction impeller, which is supported by bearings at both ends. The electric motor drives the pump directly through the coupling.

1 Main components of single-stage centrifugal pump: pump casing

There are two types of pump casings: axial split type and radial agent split type. The casing of most single-stage centrifugal pumps is volute type, and the radially split casing of multi-stage centrifugal pumps is generally an annular casing or a circular casing. Generally, the inner cavity of the volute pump casing is a spiral flow channel. It is used to collect the liquid flowing out of the impeller and lead it to the diffuser tube to the pump outlet. The pump casing withstands the full operating pressure and thermal load of the liquid.

2 Main components of single-stage centrifugal pump: impeller

The impeller is the only work component, and the pump does work on the liquid through the impeller. There are three types of impellers: closed, open and semi-open. The closed impeller consists of blades, front cover and rear cover. The semi-open impeller consists of blades and rear cover. The open impeller has only blades and no front and rear cover plates. Closed impeller is more efficient, open impeller is less efficient

3 Main components of single-stage centrifugal pump: sealing ring

The function of the sealing ring is to prevent the internal leakage and external leakage of the pump. The sealing ring made of wear-resistant material is inlaid on the front and rear cover plates of the impeller and the pump casing. Can be replaced after wear.

4 Main components of single-stage centrifugal pump: shaft and bearing

The impeller is fixed at one end of the pump shaft, and the coupling is installed at the other end. According to the size of the pump, the bearing chooses rolling bearings and sliding bearings.

5 Main components of single-stage centrifugal pump: shaft seal

There are generally two types of shaft seals: mechanical seals and packing seals. Generally, the pumps are designed to be able to install both packing seals and mechanical seals.

Vertical Single Stage Centrifugal Pump Installation Instructions

1. Before installation, check whether the fasteners of the unit are loose, and whether the flow passage of the pump body is blocked by foreign objects, so as to avoid damage to the impeller and pump body when the pump is running.

2. The weight of the pipeline should not be added to the pump during installation, so as not to deform the pump.

3. The anchor bolts must be tightened during installation to avoid the impact of vibration on the pump performance during startup.

4. For the convenience of maintenance and safe use, a regulating valve is installed on the inlet and outlet pipelines of the pump and a pressure gauge is installed near the pump outlet to ensure the operation within the rated head and flow range, and ensure the normal operation of the pump and the growth of the pump. service life of the pump.

5. After the vertical single-stage centrifugal pump is installed, turn the pump shaft, and the impeller should have no friction noise or jamming phenomenon, otherwise the pump should be disassembled to check the cause.

6. The pump is divided into two types: hard connection installation and soft connection installation (see connection method).

Preparation before starting vertical single-stage centrifugal pump

1. Test whether the rotation of the motor is correct. It rotates clockwise from the top of the motor to the pump. The test time should be short to avoid wear of the mechanical seal.

2. Open the drain valve to fill the entire pump body with liquid, and close the exhaust valve when it is full.

3. Check whether all parts are normal.

4. Drive the pump by hand to make the lubricating fluid enter the end face of the mechanical seal.

Working conditions of vertical single-stage centrifugal pump

Suction pressure ≤ 1.0Mpa, or the maximum working pressure of the pump system ≤ 1.6Mpa, vertical single-stage centrifugal pump suction port pressure + pump head ≤ 1.6Mpa. The static pressure test pressure of the pump is 2.5Mpa. Please specify the system working pressure when ordering. When the working pressure of the pump system is greater than 1.6Mpa, it should be put forward separately when ordering, so that the over-current part and the connecting part of the pump are made of cast steel during manufacture.

Ambient temperature <40℃, relative humidity <95%.

The volume content of solid particles in the conveyed medium does not exceed 0.1% of the unit volume, and the particle size is less than 0.2mm.

Note: If the medium used is with fine particles, please specify when ordering, so that the manufacturer can use the wear-resistant mechanical seal.

Single Stage Centrifugal Pump Manufacturer

The SHOUFEI Pump, CHINA manufacturer odm oem supplies, Provide single stage pipeline circulating pump in a high quality, anti-corrosive centrifugal pump that is perfect for clean water applications. The pump is made of stainless steel and has a single suction design that makes it easy to install and operate.

SHOUFEI single stage single suction centrifugal pump Manufacturer, has clean water pump with excellent anti-corrosion properties. It is made of high quality materials and has a sturdy construction. The pump is designed for continuous operation and can be used in a wide range of applications.

The Single-stage Pipeline Circulating Pump is a great choice for those who are looking for a quality, single stage, single suction, clean water, anti corrosive centrifugal pump. This pump is made from high quality materials and is designed to provide years of trouble-free operation. The pump features a compact design and is easy to install.

SHOUFEI Pump one-stop Pump factory for many years, Shoufei Pump has been committed to manufacturing a variety of high-quality water valves. We continue to expand our product line, starting with brass fittings and valves. With on-site production processes and readily available durable materials, we export water valve components to 78 countries to meet growing demand. As a result of our efforts to innovate and improve quality control, our products are strongly supported by important markets and exported to 78 countries. As we remain committed to serving our customers, we expand our product line to face new trends and adapt to customer needs with improved OEM support.

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