List of centrifugal pump models, centrifugal pump models and parameters

Centrifugal pumps have the most types, sizes, and variants of all pumps. Depending on the way the liquid flows into the impeller of the pump, the number of impellers, whether the pump itself can self-prime, the size and type of support force, etc. Centrifugal pumps include single-stage single-suction centrifugal pumps, single-stage double-suction centrifugal pumps, multistage centrifugal pumps, self-priming centrifugal pumps, electric pumps and diesel pumps.

The structure of the centrifugal pump is characterized by a 2 8-blade fast rotating impeller installed in the volute pump. There are two interfaces on the pump casing, and the inlet leading to the center of the impeller is connected to the suction pipe; The tangential direction of the pump is the outlet, which is connected to the discharge pipe.

The main working part of a centrifugal pump is the impeller. Secondly, the suction chamber pump body (pump casing), pump cover, shaft sealing device (packing gland or mechanical seal), axial force balance device, bearing, coupling, bracket, pressure chamber, impeller workshop of the design institute. Liquids can be inhaled into the body from the suction mouth and continuously expelled from the discharge port so that the fluid pressure and discharge are highly consistent.

Mine water pump, mine water pump model is complete; Mine Water Pump Daquan 1Mine MDP Self-Balancing Multistage Centrifugal Pump MDP Mine Self-Balancing Multistage Centrifugal Pump Overview: MDP Mine Self-Balancing Wear-resistant Multistage Centrifugal Pump MDP Mine Self-Balancing Multistage Centrifugal Pump is used to transport medium-sized mine inlet water and other similar sewage with particle content, particle size mm, temperature -20 80.

Parameter range of MDP self-balancing multistage centrifugal pump for mining: flow: cubic meters Hour height:

19 The significance of 1800m MDP self-balancing multistage centrifugal pump for mine: MDP85-67X7 high-efficiency self-balancing. MD-Mine multistage centrifugal pump 85 - the design point flow rate of the pump is 85m3 H67 - the single-stage design point head of the pump is the working principle of the pump stage of the mining submersible pump:

The main working part of the mining submersible pump is the impeller, which has a certain number of blades. The impeller is fixed to the shaft and rotated by the shaft drive. The shell of the water pump is a spiral diffusion chamber, the water inlet of the water pump is connected to the suction port, and the water outlet is connected to the drainage pipe.

Before starting the pump, fill the pump with water through the filling funnel and start the pump. The impeller rotates with the shaft, and the water in the impeller is also driven by the blades to rotate. Under the action of centrifugal force, water flows from the impeller inlet to the outlet.

In this process, both the kinetic and mechanical energy of the water is improved. After the water discharged from the impeller passes through the spiral diffusion chamber, most of the kinetic energy is converted into pressure energy, which is then transported along the drain pipe. At this time, due to the discharge of water, a vacuum is formed at the inlet of the impeller.

Under the action of atmospheric pressure, the water in the suction well enters the impeller through the suction pipe. When the impeller rotates continuously, the drainage is carried out continuously. 2.

Mine MD Multistage Centrifugal Pump Mine DM Multistage Centrifugal Pump Review: MD Mine Multistage PumpMD Mine Multistage Centrifugal Pump MD Mine Multistage Centrifugal Pump is a horizontal single-suction multistage centrifugal pump. This type of pump is used to convey neutral mineral water with a solid particle content of less than 1 millimeter (particle size less than millimeter) and other similar effluents.

The temperature of the conveying medium does not exceed 80, which is suitable for steel plants, mine drainage, sewage transportation and other occasions. Model significance of MD multistage centrifugal pump: MD155-67X9MD-1 is a multistage centrifugal pump for mining.

55 - the design point flow rate of the pump is 155m3 h67 - the single-stage design point head of the pump is the number of pumps for the multi-stage centrifugal pump performance parameters: flow rate: meters h:

17 1200 meters lift.

The models and parameters of centrifugal pumps are as follows:

There are many types and specifications of water pumps, so they need to be used according to different applications. According to the working principle and structure of the pump: vane pump, positive displacement pump, such as jet pump, gas lift pump, electromagnetic pump, vacuum pump, etc.

Vane pumps: centrifugal pumps, vortex pumps, mixed-flow pumps, axial flow pumps, screw pumps, etc.

The principle of selecting the pump model

1. Economic principle: according to the specific gravity, viscosity, corrosiveness and other characteristics of the medium, select the most appropriate pump material and the most suitable pump type, and then ensure the service life of the pump.

Second, the principle of high efficiency: try to choose a high-power pump, and try to choose a large pump when the functional parameters are the same, because the power of a large pump is higher than that of a small pump.

3. Energy-saving principle: try to make the pump use at or near the rated working conditions, so that the working power of the pump can be advanced. In addition, the phenomenon of joint work of the pump should be fully considered, and the pump should be kept high efficiency under various phenomena as much as possible.

1) Selection of water pump. According to the design flow rate and design head, use the pump type spectrum or pump performance table to select the pump (the flow rate and head must match), and then check according to the configured pipeline system, if the pump is not running in the high-efficiency area, it should be re-selected.

2) The use of water pumps. If the geographical environment permits, the pump should be installed as close to the water source as possible to reduce the length of the suction pipe. The foundation of the water pump installation place should be firm, the water inlet pipeline should be sealed and reliable, there must be special support, and the water inlet pipe equipped with the bottom valve should be installed vertically with the horizontal plane as far as possible, and the angle between the axis and the horizontal plane shall not be less than 45°.

When the water source is a channel, the bottom valve should be more than one meter higher than the bottom of the water, and the net should be added to prevent debris from entering the pump. The base of the machine and pump should be horizontal, and the connection with the foundation should be firm. When the belt of the machine and pump is driven, the tight edge of the belt is below, so that the transmission efficiency is high, and the steering of the impeller of the water pump should be consistent with the direction indicated by the arrow; When the coupling is used, the machine and pump must be coaxial.

3) Inspection of the water pump. The pump shaft should rotate flexibly without impact sound; There is no obvious shaking of the shaft diameter of the pump, and enough calcium-based lubricating oil is added. Mainly check whether the water inlet pipe is damaged, and repair the cracks in time; Check whether each fastening bolt is loose and tighten the loose bolt.

The motor winding and electrical insulation of the submersible pump should meet the requirements before it can be used.

4) Operation of the water pump. During the operation of the water pump, it is necessary to pay attention to check the vacuum gauge and pressure gauge at any time, monitor and record the working condition of the water pump, listen to whether there is any abnormal noise, whether the temperature at the bearing is too high, whether the stuffing box drips too much or too little, and also check whether the pump speed and belt tightness are normal.

5) Shutdown of the water pump. The submersible pump must be buried in the water to work, once exposed to the water surface, it should be immediately powered off and stop running, otherwise there is a risk of burning. When the high-lift pump is stopped, it should be forbidden to interrupt the power suddenly, otherwise it is easy to cause water hammer and damage the pump or pipeline; For the water conveyance system equipped with gate valves, the gate valve should be closed slowly when it is shut down, and then the machine should be stopped; For pumping units powered by diesel engines, they should also be shut down after gradually reducing oil.

When the pump is shut down in winter, the water in the pump should be cleaned to prevent rust or freeze cracking; In the event of a long-term shutdown, the parts should be disassembled, dried, inspected and repaired, then assembled and stored in a dry place.

on 2019-02-19

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Centrifugal pump model selection, Y2A6D self-priming centrifugal pump stainless steel magnetic pump, centrifugal pump model selection, many people do not understand the selection of pump models, you want to determine what the equipment is used for. Fire water supply, domestic water supply, industrial water, pump lift and flow, whether the medium is known, and the material requirements for the pump. , how to know the head.

The relationship between pressure and head, 1MPa10 kg pressure 100 m head, kg pressure 30 m head, the first generation IS50-100-160, the second generation ISW50-160, the third generation TDW50-160 centrifugal pump, TD large water pump, W horizontal, 50 caliber, 160 blade diameter, centrifugal pump selection, product characteristics 1. The pump is a vertical structure, with the same diameter of the inlet and outlet, and is located on the same center line, which can be installed in the pipeline like a valve, with compact and beautiful appearance. With a small footprint and low construction investment, it can be used outdoors with a protective cover. 2. The impeller is directly installed on the elongated shaft of the motor, the axial size is short, the structure is compact, the pump and the motor bearing configuration is reasonable, which can effectively balance the radial and axial load generated by the pump operation, so as to ensure the smooth operation of the pump and the low vibration and noise. 3. The shaft seal adopts mechanical seal or mechanical seal combination, adopts imported titanium alloy sealing ring, medium-sized high-temperature resistant mechanical seal and adopts cemented carbide material and wear-resistant seal, which can effectively increase the service life of mechanical seal.

4. Easy to install and maintain, no need to disassemble the pipeline system, as long as the nut of the pump conjoined seat is removed, all the rotor parts can be extracted. 5. The series and parallel operation mode of the pump can be adopted according to the requirements of use, that is, the needs of flow and head. 6. The vertical and horizontal installation of the pump can be adopted according to the requirements of the pipeline layout.

The models and parameters of centrifugal pumps are as follows:1. Classification according to the number of impellers.

1) Single-stage pump: that is, there is only one impeller on the pump shaft.

2) Multistage pump: that is, there are two or more impellers on the pump shaft, and the total head of the pump is the sum of the heads generated by n impellers.

2. Classification according to working pressure.

1) Low-pressure pump: the pressure is lower than 100 meters of water column.

2) Medium pressure pump: the pressure is between 100 650 meters of water column.

3) High pressure pump: the pressure is higher than 650 meters of water column.

3. Classified according to the impeller suction method.

1) Single-side inlet pump: Single-suction pump, there is only one inlet on the impeller.

2) Double-side inlet pump: Double-suction pump, there is a water inlet on both sides of the impeller. It has a flow rate twice as large as a single-suction pump and can be seen as having two single-suction impellers placed back-to-back.

4. Classified according to the form of the joint joint of the pump casing.

1) Horizontal split pump: There is a joint joint in the horizontal plane through the axial line.

2) Vertical joint surface pump: The joint surface is perpendicular to the axial line.

5. Classified according to the position of the pump shaft.

1) Horizontal pump: The pump shaft is located in the horizontal position.

2) Vertical pump: The pump shaft is located in the vertical position.

6. Classified according to the way the water from the impeller is directed to the extrusion chamber.

1) Volute Pump: After the water comes out of the impeller, it directly enters the pump casing with a spiral shape.

Centrifugal pump models usually consist of a series of numbers and letters, with different numbers and letters representing different meanings. Here are the meanings of some of the numbers and letters commonly found in centrifugal pump models:

Flow rate: Usually expressed in Q in M H or L S. Flow rate is the volume of liquid conveyed by the pump per unit of time.

Head: Usually expressed in h, the unit is m or kpa. The head is the height difference of the liquid pressure generated by the pump when conveying the medium, which can also be understood as the height difference of the liquid from the inlet to the outlet of the pump.

Rotational speed: Usually expressed in n in r min or rpm. The speed is the speed at which the pump impeller rotates, which is generally determined according to the flow rate and head of the pump. It's early.

Impeller diameter: usually expressed in d in mm. The impeller diameter is the size of the impeller diameter of the pump.

Material: Usually represented by letters, such as F for cast iron, SS for stainless steel, etc. The material of the pump is usually related to the characteristics of the conveying medium, which needs to be selected according to the actual situation.

Model number: It is usually indicated by a code composed of letters and numbers, such as is, IH, etc. Different models indicate different pump types and uses.

In summary, the combination of numbers and letters in centrifugal pump models represents different meanings, including flow, head, speed, impeller diameter, material, and model. Understanding these implications can help us select the right pump type to meet different conveying needs.

The models of multistage centrifugal pumps: D type, DF type, DY type, MD type, ZPD type, DG type are not available. The D type is a multi-stage centrifugal clean water pump, DF is a multi-stage centrifugal buried pump, DY is a multi-stage centrifugal oil pump, MD is a multi-stage wear-resistant centrifugal pump, and DG is a multi-stage centrifugal boiler feed pump.

Model of centrifugal pump:

The first part: represents the name of the pump, which is denoted by is;

Part II: Represents the diameter of the suction inlet of the pump, in mm, in Arabic numerals.

The third part: represents the diameter of the discharge port of the pump, in mm, expressed in Arabic numerals.

Part IV: Represents the nominal diameter of the pump impeller, in mm, expressed in Arabic numerals.

The fifth part: represents the deformed product of the pump, which is represented by the letters A, B, and C.

Example of meaning represented by the symbol, IS50-32-250 pump:

IS: Water pump that meets international standards.

50: The diameter of the inlet pipeline is 50mm;

32: The diameter of the outlet pipeline is 32mm;

250: The nominal diameter of the impeller is 250mm.

The benefits of multistage compression for reciprocating compressors are as follows:

1. Reduce power consumption and improve the economy of the compressor, the more stages, the closer to the isothermal cycle, that is, the higher the economy of the compressor.

2. Improve the volume utilization rate of the cylinder, when the suction pressure is constant, the greater the pressure ratio, the higher the discharge pressure, due to the existence of the clearance volume, the greater the volume of the high-pressure gas expansion in the clearance, so that the inhalation volume is reduced, the volume coefficient is reduced, and the exhaust volume is reduced.

3. Avoid too high temperature, when the suction temperature and pressure are constant, the higher the pressure ratio, the higher the discharge pressure, the higher the discharge temperature. This can deteriorate or even destroy the performance of the lubricant in the cylinder, accelerate the wear of parts, and shorten the service life.

4. Reduce the maximum force acting on the piston and improve the uniformity of the force of the running mechanism.