What is the difference between the pump body of a single stage pump and a multistage pump, a single

In order to meet the needs of users and accelerate the development of high-pressure multistage pump technology, Changsha Zhonglian Pump Industry adopts the advanced technology of similar foreign products combined with the company's many years of design experience, and develops high-efficiency high-pressure multistage centrifugal pump products according to the APL610 standard; It is a leading technology in the industry. It has the advantages of wide efficiency area, wide performance range, good cavitation performance, safe and stable operation, low noise, less wearing parts, and convenient installation and maintenance. It is used to convey clear water that does not contain solid particles, has a temperature of less than 100 or liquids with physical and chemical properties similar to clean water.

It is suitable for mines, factories and urban water supply and drainage projects. The working principle of the self-balancing multistage pump: the pump shaft rotates under the drive of the motor, and works on the liquid to increase its energy, so that the required amount of liquid is passed through the pump by the suction pool....

Single-stage centrifugal pump is definitely the basis of multistage centrifugal pump, both are centrifugal pumps, the impeller of the same size is connected in series and installed in the same pump, it forms a multistage centrifugal pump.

1. Therefore, the most obvious difference between the two is the impeller, the single-stage centrifugal pump only has a one-stage impeller, the number of multi-stage centrifugal pump impellers is more than 2, and the single-stage centrifugal pump refers to a pump with only one impeller and the highest head is only 125 meters;

2. Multistage centrifugal pump refers to a pump with two or more impellers, and the maximum head can exceed 125 meters; In the case that the multistage pump needs to be equipped with a two-stage motor in the head of a single-stage pump, the four-stage motor can be equipped by increasing the number of impellers, so as to improve the service life of the pump and reduce the noise of the unit, but the maintenance of the multi-stage pump is a little more difficult than that of the single-stage pump.

3. The pressure is the superposition of the impellers of each stage, and the difference between the impellers of single-stage and multi-stage centrifugal pumps forms the difference in the pressure of the two. The single-stage centrifugal pump has low pressure and large flow, and the multi-stage centrifugal pump has high pressure and small flow.

4. The multistage centrifugal pump has a high head, the axial force is larger than that of a single-stage pump, and the lift of a single-stage centrifugal pump is lower than that of a multi-stage centrifugal pump, but the flow rate is large and the pressure is low.

5. When the actual lift of the pump is less than 125 meters, the single-stage centrifugal pump or multi-stage centrifugal pump can be comprehensively considered according to the area of the pump room, the pump (multi-stage centrifugal pump is generally higher than the single-stage centrifugal pump), and other factors.

1. Single-stage pump refers to a pump with only one impeller and a maximum head of only 125 meters;

2. Multistage pump refers to a pump with two or more impellers, which can absorb and press water in multiple stages in stages, so as to lift the water to a very high position, and the head can increase or decrease the number of stages of the pump impeller according to the need; In the case that the single-stage pump head needs to be equipped with two-stage motors, the four-stage motor can be equipped by increasing the number of impellers, so as to improve the service life of the pump and reduce the noise of the unit.

3. When the actual lift of the pump is less than 125 meters, the single-stage pump or multi-stage pump can be comprehensively considered according to the area of the pump room, the pump (the multi-stage pump is generally higher than the single-stage pump), and other factors. I think the use of multi-stage is mainly due to economic considerations, which can be described in any fluid mechanics book. Single-stage and multi-stage is the difference between compression stage, a compression stage not only refers to the impeller but also the static vane holding ring, interstage sealing and so on.

According to the head level, choose a single-stage pump or a multi-stage pump, the efficiency of the multi-stage pump is lower than that of the single-stage pump, such as the single-stage pump and the multi-stage pump can also be used, the first choice of single-stage pump. If the single-stage pump can meet the needs, try to use the single-stage pump, the multi-stage pump structure is complex, there are many spare parts, the installation requirements are high, and the maintenance is very troublesome. The multistage pump is the sum of the single-stage pump, and the head and outlet pressure can be very high.

Summary. The difference between a pipeline pump and a multistage pump is mainly in their structure and working principle. A pipeline pump is a simple and low-cost pump, which usually consists of a motor, pump casing, impeller, seals, etc.

It works by driving the impeller to rotate by a motor, which draws the liquid into the pump casing and discharges the liquid through the discharge port. Pipeline pumps are usually suitable for occasions with large flow rates and low heads, such as water supply systems, air conditioning circulation systems, etc. A multistage pump is a complex and costly pump, usually consisting of multiple impellers and pump bodies.

Its working principle is to lift the liquid step by step through multiple impeller rotations, so as to achieve a higher head. Multistage pumps are usually suitable for applications with high heads, such as water supply in high-rise buildings, liquid transfer in industrial production, etc. Therefore, pipeline pumps and multistage pumps of the same power can theoretically be the same in terms of flow and head, but in practical applications, different pumps are suitable for different occasions, and the right pump needs to be selected according to specific needs.

Pipeline pumps and multistage pumps of the same power can theoretically provide the same flow and head, but in practice there are some differences between them. The pipeline pump is a single-stage separation pump, which has the main advantages of simple structure and low cost, and is suitable for transporting low-head, high-flow sail calendar medium. However, its disadvantage is that the head is limited ,..

Can you add, I don't quite understand it.

The difference between a pipeline pump and a multistage pump is mainly in their structure and working principle. A pipeline pump is a simple and low-cost pump, which usually consists of a motor, pump casing, impeller, seals, etc. It works by driving the impeller to rotate by a motor, which draws the liquid into the pump casing and discharges the liquid through the discharge port.

Pipeline pumps are usually suitable for occasions with large flow rates and low heads, such as water supply systems, air conditioning circulation systems, etc. The multistage pump is a pump with a complex structure and high cost of segmentation, usually composed of multiple impellers and pump bodies. Its working principle is to lift the liquid step by step through multiple impeller rotations, so as to achieve a higher head.

Multistage pumps are usually suitable for applications with high heads, such as water supply in high-rise buildings, liquid transfer in industrial production, etc. Therefore, the flow rate and head of the pipeline pump and the multistage pump of the same power can theoretically be the same, but in practical application, different pumps are suitable for different occasions, and the appropriate pump needs to be selected according to the specific needs.

1. Single-stage pump refers to a pump with only one impeller;

2. Multistage pump refers to a pump with two or more impellers.

Compared with single-stage pumps, the difference is that multistage pumps have more than two impellers, which can suck and pressure water in multiple stages in stages, so as to lift the water to a very high position, and the head can increase or decrease the number of stages of the pump impeller according to needs. Multistage pumps are mainly used for mine drainage, urban and factory water supply, and are rarely used for agricultural irrigation, and are only suitable for lifting water in high mountains with high head and small flow to solve the difficulty of drinking water for people and animals.

Single-stage submersible pump.

Multistage submersible pumps.

Multistage vertical centrifugal pipeline pump.

Multistage centrifugal pumps and single-stage centrifugal pumps are centrifugal pumps. The pump can be connected in series to improve the head, and the head is superimposed, such as using the impeller of the same specification and size, which is installed in the same pump in series, (the same shaft, the pump shell cavity is separated by a certain extent, and the liquid channel is not connected) has become a multistage pump, of course, the single-stage pump is relative to the multistage pump.

The centrifugal pumps produced by China Coal Group can convey hot water, oil, corrosive and abrasive media by changing the material of the pump, sealing form and adding a cooling system. The centrifugal pump is divided into two types: multistage centrifugal pump and single-stage centrifugal pump.

Multistage pumps and single-stage pumps are both centrifugal pumps, but single-stage pumps have only one impeller, while multistage pumps have multiple impellers.