Seal Of The Mechanical Pump

1. How many types of seals are commonly used in pumps? There are two types, dynamic seal and static seal.   2. What is the basis for choosing seals for pumps used in chemical production? According to the process conditions, working pressure and medium corrosion, the rotation speed is selected.   3. What are the […]

What are the main performance parameters of the pump?

1. What are the main performance parameters of the pump? Mainly include flow, head, NPSH, speed, power, and efficiency, etc.   2. What is the reason for the excessive power consumption of the pump? 1) The total head does not match the head of the pump; 2) The density and viscosity of the medium are […]

The Mechanical Seal Of Pump

1. What is the mechanical seal of the pump? The mechanical seal is also called the end-face seal. It is composed of at least one pair of end faces perpendicular to the axis of rotation. Under the action of fluid pressure and compensation mechanism, the two end faces are closely fitted and slide relative to […]

Pump Basics

1. What is a pump? A pump is a machine that converts the mechanical energy of the prime mover into the energy of pumping liquid.   2. What is power? The work done per unit time is called power.   3. What is effective power? In addition to the energy loss and consumption of the […]

Lubrication Of The Pump

1. What are the types of lubrication of pumps? 1) Drip oil lubrication 2) Oil mist lubrication 3) Splash lubrication 4) Pressure lubrication 5) dry oil cup lubrication   2. What factors should be considered when selecting lubricating oil for pumps? 1) Movement speed 2) The nature of the movement 3) Working temperature 4) Pressure […]

Use of positive displacement pump

Hydraulic pumps are the heart of every hydraulic system, and they have many unavoidable responsibilities that help improve system performance. Pumps play an important role in converting mechanical energy into useful hydraulic energy. You can find a variety of hydraulic pump types for a variety of applications. Based on displacement, pumps are mainly divided into […]

Specific operation of pump selection

According to the pump selection principle and basic conditions of selection, the specific operations are as follows: 1. According to the arrangement of the device, terrain conditions, water level conditions, and operating conditions, determine the selection of horizontal, vertical and other types of pumps (pipeline, submersible, submerged, non-blocking, self-priming, gear, etc.). 2. According to the […]

Principle and basis of pump selection

Selection principle Make the type and performance of the selected pump meet the requirements of process parameters such as device flow, head, pressure, temperature, cavitation flow, and suction. The requirements for the properties of the medium must be met.For pumps that transport flammable, explosive, toxic, or precious media, reliable shaft seals or leak-free pumps are […]

Centrifugal Pump

The idea of ​​using centrifugal force to transport water first appeared in a sketch by Leonardo da Vinci. In 1689, French physicist Papin invented the volute centrifugal pump with a four-blade impeller. But closer to the modern centrifugal pump is the so-called Massachusetts pump with radial straight blades, semi-open double suction impeller, and volute that […]

Pump performance parameters

There are mainly flow and head, in addition to shaft power, speed, and necessary NPSH. Flow refers to the amount of liquid output through the pump outlet per unit time, generally using volume flow; lift is the energy increment per unit weight of liquid transported from the pump inlet to the outlet. For positive displacement […]