Review different pump types commonly used understand the difference between centrifugal pumps and positive displacement pumps understand the working principle of the tuthill. Mukesh sahdev, associate content writer presented at the chemical engineers resource page. Centrifugal water pumps come in several different types, including standard, trash, and submersible models. Pumps are in general classified as centrifugal pumps or rotodynamic pumps and positive displacement pumps. Sundyne pump a specific type of centrifugal pumps that are vertically mounted low npsh conditions and are used when low volume of fluid is required at hig.
Classification of pumps types of pumps and their working. Pumps types types of pump classification of pumps different types of pump types of positive displacement pump. In this article, i have covered classifications of valves and functions of valves. Hydraulic pumps are used in hydraulic drive systems and can be hydrostatic or hydrodynamic. Different types of centrifugal pumps and their applications dxp. The type depends on the function the pump is to perform and the size and speed depends on the amount of liquid to be moved in a given time. This is done by the use of an impeller a rotating vane in specific.
Irrigation pumps, in general, are driven either by engines or electric motors. Unlike other chromatography techniques, hplc needs to generate pressure by pumps. Hydraulic pumps are mechanical devices designed to move fluids with sufficient pressure to impart energy in the fluid body. These pumps work by producing a flow by incrementing the value of velocity in the liquid. We will also learn how is the working of screw pump different from that of other types of pumps. These functions are performed primarily by two different types of pumps. Professional pump users have a variety of pump technologies available for a wide variety of industries and uses. The pressure of steam inside the boiler is high, and so the feed water pressure must be raised before its entry into the boiler for consistent operation. Apr 01, 2020 there are several different types of hydraulic pumps in general use, most of which feature closetolerance rotary mechanisms that operate at comparatively low speeds. Different types of valves used in piping a complete guide. Read here to know about the common reciprocating compressor and very recent development in vane and lobe type compressors. They can also be used in the same applications as straight centrifugal pumps flooded suction applications such as pulling from aboveground storage tanks.
The swept volume or displacement of gear pumps for hydraulics will be between about 1 to 200 millilitres. Centrifugal pumps casing the casing contains the liquid and acts as a pressure containment vessel that directs the flow of liquid in and out of the centrifugal pump. Different types of pumps centrifugal pumps process. In an injector, the kinetic energy of steam is used to increase the pressure and velocity of feed water in a convergentdivergent nozzle. A centrifugal pump is a rotating machine in which flow and pressure are generated dynamically. Types of pumps pumps come in a vast array of shapes and sizes and in a great range of designs.
In the previous article we learned about the various characteristics, main parts and special features of the rotary pumps. Centrifugal pumps are the most common type of pumps found in doe facilities. The application mainly includes the type of fluid you desire to pump, the distance you desire to move the fluid, and the. Mechanical pumps may be submerged in the fluid they are pumping or be placed external to the fluid pumps can be classified by their method of displacement into positive displacement pumps, impulse pumps, velocity pumps, gravity pumps, steam pumps and valveless pumps. In centrifugal pumps the direction of flow of the fluid changes by ninety degrees. Each type of industrial pump comes with advantages not offered by other pumps. We will gladly connect you with a suitable manufacturer. The type of pump, as well as selection, mainly depend on our requirement. Saunders valves are ideal for restrictive or flow control duties ie valve half closed to reduce flowrate. In a particular hydraulic system, the hydraulic valves perform different functions and allow the system to operate well. These types of centrifugal pumps are also differentiated via their vertical and horizontal shaft orientation, and they offer different applications and restrictions. Different types of pumps and their working principles.
These pumps come in several types which includes trash, submersible, and standard models. The centrifugal pump has varying flow depending on the system pressure or head. They all have a specific function in the hydraulic system and their names are selfexplanatory. Below, well discuss several different types of pump devices, as well as their characteristics and applications. Dec 16, 2017 technology wise there are two types of pumps. These include gear pumps, screw pumps, and fixeddisplacement vane pumps.
The first of the two main types of pumps are the centrifugal pumps or the rotodynamic ones. Pumps different technologies star pump alliance spa. The fact of the matter is that there are three types of problems mostly encountered with centrifugal pumps. Disc pumps are a series of discs usually polypropylene, nylon or similar material that are evenly spaced and fix. Basics concepts of operation, maintenance, and troubleshooting, part i by. The presentation will generally follow a framework of progressivelydecreasing speci. Different types of valves with pdf file engineering. Normally electric motor driven, but other drive types available. This is the hplc part which pumps the mobile phase at a constant pressure and flow rate through the column.
A floor model sump pump, on the other hand, sits at floor level. Pumps can be classified by their method of displacement into positive displacement pumps, impulse pumps, velocity pumps, gravity pumps, steam pumps and valveless pumps. Different types of impeller the impeller of a centrifugal pump can be of three types. There are several different types of hydraulic pumps in general use, most of which feature closetolerance rotary. With many different configurations available, centrifugal pumps are widelyused because of their design simplicity, high efficiency, wide range of capacity and head, smooth flow. Centrifugal pumps rotodynamic pumps the centrifugal or rotodynamic pump produce a head and a flow by increasing the velocity of the liquid through the machine with the help of the rotating vane impeller. If the pump is driven from the top, the discharge head is used and the column pipe and the intermediate shaft are adjusted for the different installations.
Jul 17, 2019 pumps types types of pump classification of pumps different types of pump types of positive displacement pump. As experts in industrial pumps and rotating equipment since 1946, we wanted to provide a quick easytodigest way of understanding what advantages each industrial pump possesses. Types and selection of pumps the mechanical device or arrangement by which water is caused to flow at increased pressure is known as a pump and the process of using a pump for this purpose is known as pumping. May 27, 2014 centrifugal pumps casing the casing contains the liquid and acts as a pressure containment vessel that directs the flow of liquid in and out of the centrifugal pump. A submersible sump pump can be placed below the water line. Both water pumps work in the same manner, but submersible sump pumps handle larger quantities of water and can be fully submerged without any danger of electrical shortages. Jet pumps are a type of home water well pump that is used for lower flow rates than vertical turbine types. Gerotor and radial, or axial, piston pumps are also frequentlyused types of hydraulic pumps. Types, performance evaluation, efficient system operation, flow control strategies and energy conservation opportunities 6. There are different types of pumps available in the market. Khalil encyclopedia of life support systems eolss 1. This is a rather technical way of saying that a hydraulic pump pumps a fluid, typically a low viscosity oil, hard enough that it may be used to perform work. They can be classified according to their basic operating principle as dynamic or displacement pumps. The two types of pumps behave very differently regarding pressure head and flow rate.
Centrifugal pumps develop pressure by increasing the velocity of the liquid liquid is literally flung out of the cutwater. All sorts of liquids can be pumps with centrifugal pumps. Mostly piston types of pumps, also called constant displacement pumps are widely used they have limitations of pressure i. This document is focused on lowvoltage miniature pumps, specifically the pumps offered by simply pumps and listed on our website at this document is intended to inform and assist potential. So you can already determine your suitable pump technology. By using these pumps, all types of liquids can be pumped with lowviscosity. Hplc pumps from the basic part of hplc instrumentation unlike other chromatography techniques, hplc needs to generate pressure by pumps without a proper pump, hplc analysis is impossible and the instrument is not operable.
Different types of pumps are often combined into a single system, e. All liquids can be pumped using centrifugal water pumps, even those with low viscosity. Centrifugal pumps are designed with a rotating impeller which can be used for supplying the water into the pump and force the discharge flow. Centrifugal pumps types of centrifugal pumps dultmeier. They can perform many different functions, including moving a fluid from one location to another, recirculating a fluid in a closed system, such as in a heating or cooling system, and providing pressure, such as in hydraulic systems. Many types and configurations for different applications. In these pumps, the fluid enters axially and comes out radially or vice versa. The positive displacement pump has more or less a constant flow regardless of the system pressure or head. Read here to get the total insight about the different types of compressors and their pictures. There are many types of industrial pumps offered for a variety of applications.
Positive displacement pumps allow liquid to flow into an open cavity trap the liquid in the pump transport liquid from the suction to discharge port mechanically force liquid out of the pump. A positive displacement pump can be further classified according to the. Valves can be categorized also based on their function. Types of water pumps are 1positive displacement pumps. Here we give just a few examples of pumps from a range of di. Its function is to increase the pressure of the liquid. Kinetic pumps are subdivided into two major groups and they are centrifugal pumps and positive displacement pumps. Different types of boiler accessories and their functions mecholic no comments.
There are various types of air compressors used in various industries. Different types of valves with pdf file engineering discoveries. Jun 25, 2019 a centrifugal water pump uses a rotating impeller to move water into the pump and pressurize the discharge flow. The centrifugal pumps are sub classified into many different types of pumps. Centrifugal pumps impeller centrifugal pumps use impeller as the primary source for their pumping action. In these types of pumps the flow of fluid takes place in radial direction i. Apr 27, 2020 there are two different types of sump pumps. Difference between boiler mountings and accessories feed pump. It generates flow with enough power to overcome pressure induced by the load at the pump outlet. Positive displacement pumps generally makes more pressure than. The vanes are located between the two discs, all in a single casting. Centrifugal pumps are perhaps the most common type of pump in operation today. Valve is a device that regulates, controls or directs the flow of a fluid by opening. This article will assist you to know the main functionalities of each type of pump.
Centrifugal pumps types of centrifugal pumps dultmeier sales. In this article we will learn about the working of various types of rotary pumps, i. The vanes are free on one side and enclosed on the other. Centrifugal pumps enjoy widespread application partly due to their ability to operate over a wide range of flow rates and pump heads. There are different types of electric motors used in different applications. Oct 07, 2016 there are many types of industrial pumps offered for a variety of applications. If the length of the installation is increased, the number of the. A hydraulic pump is a mechanical source of power that converts mechanical power into hydraulic energy hydrostatic energy i. Types positive displacement pumps a lobe pump a positive displacement pump. Gear pumps with external teeth fixed displacement are simple and economical pumps. Oct 03, 20 7117897 pumps turbines by omer omera 7041 views.
The function of the injector is same as the feed pump. The type depends on the function the pump is to perform and the size and speed depends on the amount. Horizontal end suction pump with ejector either mounted on the pump for shallow well services, or located down in the well. Learn more about the different types of pumps, their functions, differences and applications. For example, a horizontal centrifugal pump is easy to maintain thanks to easily accessible internal mechanisms, while a vertical centrifugal pumps maintenance can be more. Centrifugal pumps the centrifugal pump produces a head and a flow by increasing the velocity of the liquid through the machine with the help of a rotating vane impeller. Mechanical engineering types and performance of pumps and compressors essam e.
It is a pump in which the flow of water takes place axially i. The different types of pumps and their functions beyond. Selfpriming centrifugal pumps are unique because they can lift liquids as high as 15, 20 or even 25 from ponds, underground tanks, pits, rivers, etc. A gear pump is a positive displacement pump that promotes flow through repeated enclosing of a set volume. The energy changes occur by virtue of two main parts of the pump, the impeller and. Different types of boiler accessories and their functions. The three basic models of hydraulic valves are pressure control, flow control, and directional control hydraulic valves. It is a hydraulic machine which converts mechanical energy into hydraulic energy. Types of pumps and pump terms explained mechanical pumps are the second most common machine in the world after the electric motor.
351 900 781 707 1012 109 545 1319 1315 70 839 535 1169 1371 638 854 1083 562 649 1363 871 485 765 1098 320 733 1080 433 1073 895 29 1074 1008 1245 918 816 99