What is a dosing pump and how does a dosing pump work. The characteristics of current measuring methods of concrete pump discharge are analyzed, and the shortage of these methods is pointed out. It is designed to keep the pressure in the system elevated to a specific level when the system is not in use, so that the fire pump doesnt have to run all the time and the system. The hydraulic pump pumps the fluid into the accumulator, which is nothing but a. This document will provide the guidance necessary to ensure that the operations involving concrete pumps are carried out safely and efficiently.
Certification thus permits concrete pump operators to raise the professional standards of the industry by maintaining and improving safe operation of concrete pumps. But since its advent another form of treadle pump has been developed which is commonly known as the pressure pump. At the same time, this suction d r aws the other ball to the pump l i n e, closing it off fi g u re 4. For given proportions of cement and aggregates without admixtures, the higher the slump, the wetter the mix. A submersible pump, also called an electric submersible pump, is a pump that can be fully submerged in water. The tight seal among the vanes, rotor, cam, and sideplate is the key to the good suction characteristics common to the vane pumping principle. Pumping may be used for most concrete construction, but is especially useful where space for construction equipment is limited. Reciprocating pumps are more suitable for low volumes of flow at high pressures. Concrete pump machine choosing best pump from aimix. Pdf design of automobile concrete pump researchgate. Certification applies to individuals and is granted by the american concrete pumping association to. The operation of the concrete pump involves the use of hydraulic and electrical systems.
Amrit kumar refrigeration and airconditioning leave a comment. Do you know whats the working principle of concrete pump. Reciprocating pump is a positive displacement pump where certain volume of liquid is collected in enclosed volume and is discharged using pressure to the required application. The top countries of suppliers are china, india, and taiwan, china, from which the percentage of concrete screw pump supply is 99%, 1%, and 1% respectively. Understanding the concrete pump machine working principle. How a concrete pump works putzmeister concrete pump how.
The simple answer to how concrete pumps work is, a concrete truck discharges its concrete into a hopper on the back of the pump truck. Some concrete pump trucks have different types of valve systems, svalves, ballvalves, but basically thats how a concrete pump works. A stationary component comprised of a casing, casing cover, and bearings. Following is a brief description of the operation of a concrete piston pump and how the different valve systems work.
Also called concrete trailer pumps, they can be used to pump concrete, shotcrete, grout, mortar, foamed concrete and flowable fill. Working mechanism of a centrifugal pump a centrifugal pump is one of the simplest pieces of equipment in any process. As the rotor rotates yellow arrow and fluid enters the pump, centrifugal force, hydraulic pressure, andor pushrods push the vanes to the walls of the housing. Calcium chloride is widely used in nonstructural concrete. A clear, level area of ground with a firm base that is capable of supporting the pump unit. Under the influence of high pressure, concrete material can be pumped along the pipeline continuously. The fluid in screw pumps moves between the screw threads and is displaced axially as the screws rotate and mesh. It can contribute to the corrosion of reinforcing steel and is prohibited or very limited in most structural concrete applications. Nov 11, 2017 hydraulic pump, aka water pump, is a machine which converts the kinetic energy of the rotating blades into the pressure energy of the water. This pressure energy helps the water reach high altitudes where it is stored in an overhead tank or pumped to ground level and used for various purposes such as irrigation, cleaning drainage etc. If you are interested in using cempump for your building projects in. Concrete construction article pdf how a concrete pump works. This operates on exactly the same principle as the suction pump but the delivery end.
Working principle of concrete batching plant is dependent on five primary functions as below. A wide variety of concrete screw pump options are available to you, there are 1,903 suppliers who sells concrete screw pump on, mainly located in asia. The working of the direct acting pump is such a way that, during the suction stroke the inlet valve opens while the outlet valve remains. From this motion, a suction pressure is created inside the pump. When planning for pumping concrete to be on site the builder or principle contractor should consider such factors as.
With concrete mix in the hopper and the pump operating, a material cylinder retracts, drawing material into the cylinder. Usually, piston pumps are used, because they can produce hundreds of atmospheres of pressure. Thaty why many customers would like to buy a concrete pump for his construction projects. During the pumping the pressure relief valve y3 is closed electrically while y4b is being. In the hopper an agitator keeps the fresh concrete flowing smoothly into the pumping cylinders. Model work health and safety act 2011 and model work health and safety regulations 2011. The principle of this design was adopted by almost all other manufacturers and is still the worldwide standard design. Basic concept, construction and working principle of. Pdf this paper has been written with the following objective. Fo l l ow ing is a brief description of the op e r ation of a concrete piston pump and how the different va l v e sys tems work. Operating principle of piston pump with seat valves. Its purpose is to convert energy of a prime mover a electric motor or turbine first into velocity or kinetic energy and then into pressure energy of a fluid that is being pumped. Measuring method of concrete pump discharge based on.
Components of reciprocating pump the main components of reciprocating pump are. Boom pumps are used on most of the larger construction projects. It is a machine that combines various ingredients like aggregates, sand, water, cement and additives. Consistency is the ability of freshly mixed concrete to flow. Heres paul sulman of reed concrete pumps explaining how a concrete pump wet shotcrete machine works, in very simpleterms.
Concrete piston pumps operate on the same principle as a twin cylinder reciprocating engine, in which one cylinder draws concrete from the hopper on the return stroke and another pushes it on the forward stroke into the line. When using the monitoring switch a spare function can be switched on additionally which enables a continuous working of the concrete. Concrete piston pumps operate on the same principle as a twincylinder. Safe use of concrete pumps uks largest concrete pump hire.
Silo working principle of concrete batching plant haomei. Putzmeister develops, produces, sells and serves its customers worldwide with technically highquality and serviceoriented machines in the following areas. Dec 26, 2016 putzmeister develops, produces, sells and serves its customers worldwide with technically highquality and serviceoriented machines in the following areas. Working mechanism of a centrifugal pump a centrifugal pump is one of the simplest pieces of equipment in any process plant. The modules listed in the overview are linked to the corresponding pages. Concrete mix design definition concrete mix design is defined as the appropriate selection and proportioning of constituents to produce a concrete with predefined characteristics in the fresh and hardened states. Structural concrete structures reinforced concrete construction. If its working from an input signal, then it may need to be calibrated to dose and alter its dose according to a measurement.
A number of different designs of concrete pump were developed in the first half of the 20th century but it was friedrich wilhelm schwings company schwing gmbh which invented the twin cylinder hydraulic concrete pump in 1957. Depending on stroke, oil flows in a closed loop from either port a or port b on the pump to the hydraulic cylinders. Concrete pumping is generally construction work as defined and may involve high risk construction work for which a safe work method statement is required as set out in section 1. Variable displacement control of the concrete pumping. In general, concrete mixes are designed in order to achieve a defined workability, strength and durability. In this portal, you find almost every topic you are looking for. Pump headflow curves are typically given for clear water. Screw pumps also falls in the category of rotary pumps and have the same mechanism and principle. A rotating component comprised of an impeller and a shaft ii.
Review different pump types commonly used understand the difference between centrifugal pumps and positive displacement pumps understand the working principle of the tuthill. Safety is a major concern of every person involved in the concrete pumping industry. Cement equpment working principlehenan mining machinery. The hopper has a mesh grate the concrete falls through which prevents any large rocks or chunks from plugging the pump truck hoses. Concrete construction article pdf how a concrete pump. Concrete piston pumps operate on the same principle as a twin cylinder reciprocating engine, in which one cylinder draws concrete from the hopper on the return stroke and. This system incorporates material cylinders linked to hydraulic cylinders that cycle alternately. Generally, direct acting pumps are the commonly used types of pumps for pumping of concrete. We will introduce for you in the following passage. It is vital to everyone involved with concrete pumping, from the concrete pump operator, to the ready mix driver, to the man on the end of the hose and to the construction contractor, that at all times they all must make safety a. Concrete construction article pdf how a concrete pump works 1.
It not only can save a lot of labour, but improve working efficient. This pump has become known as thesuction pump and it is used to draw water up from a well or river and discharge it into a canal for irrigation. After studying the currently available concrete pumps, three working. Benefits of using concrete pump in construction project it is a common sight to see concrete pumps being used in a largescale commercial construction project. To design an effective screw pump device archimedes screw, designers have to work within external constraints, including. Pumped concretepump types, working, technique and applications. Slump is a measure of concrete consistency or fluidity. It is then suited to pumping with the aid of special pumping machines. With concrete material in the hopper and the pump operating, a. This piston is either spring loaded or some calculated weight is kept on it or even pneumatically pressurized. The code of practice also refers to principles in the australian standards that relate to concrete pumping as 1418. Having a good concrete pump truck operator is also very important. Text headings in each module are linked to and f\ rom the table of contents for that module.
Basics concepts of operation, maintenance, and troubleshooting, part i. The concrete is fed into the hopper of the direct acting pump. Hanson concrete pumping mobile concrete pumping risk assessment important notice 1 health risk warning any person at risk must be notified of the dangers detailed below before starting any concrete pumping work type of injury and cause concrete splashing into eyes from the end hose concrete burns to hands and feet falls or injury to. An accumulator usually has a cylindrical chamber, which has a piston in it. These included the roots pump 1859, diffusion pumps geissler 1855, topler 1862 and sprengel 1865, bunsen s 1870 water jet pump and dewar s 1892 cryogenic liquid aircooled charcoal pump. Concrete pump operator, technician, line pump trainee and more on. Detailed information regarding the safety of pipelines on concrete pumps can be found in the concrete pumping code of practice 2005 pdf, 896.
The first type of concrete pump is attached to a truck or longer units are on semitrailers. This method is used where large quantity of concrete work is involved at greater height, where other means of transporting is not easy to do. The energy transferred from the pump to the fluid appears as the pressure and velocity of the fluid. Concrete line pumps concrete trailer pumps, concrete. Mechanical vacuum pumps developed and used from the mid 20th century to the present day will be discussed after some basic vacuum concepts. Concrete piston pumps operate on the same principle as a twincylinder reciprocating engine, in which one cylinder draws concrete from the hopper on the return stroke and another pushes it on the forward stroke into the line. The principle of this design was adopted by almost all other manufacturers and.
The concrete pumping opera tion starts with the discharge of the concre t e, usually from a re a d y mix truck, into a hopper larg e enough to hold a small supply of f resh concre t e. Concrete pumping frees hoists and cranes to deliver the other materials of construction concurrently with concrete placing. Concrete pressure during pumping operations generally from 600 psi to 1233 p. They have a horizontal piston as shown in the below figure. The pistons are driven by hydraulic cylinders powered by a hydraulic pump. Concrete pump adopts motor or diesel engine to drive the pumping system and through the hydraulic system with constant power it can control and adjust the transport amount of concrete autonomic and it also can adopt manually control to deploy the amount of concrete transport. Location of the concrete pump in the most favourable position to pump concrete. Learn mechanical is a community portal for mechanical engineering students. When starting, the stirring pump drives the hydraulic through the motor and the hydraulic pump drives the hydraulic cylinder, thus the piston in the conveying cylinder is pushed to perform the alternating movement of pushing and sucking alternatively. The control system is electric and fully automatic. A synchronized valve enables concrete from the two cylinders to go into one pump discharge line. Maintain a safe working distance between coworkers. Co n ve r s e l y, when the piston is pushing c o n c r ete out of the cylinder, the ball to the hopper closes and the one to the pump line opens, allowing the concrete to enter the pump l i n e.
Do not confront snakes and wild animals report to your supervisor and warn coworkers i. Aug 29, 2016 a jockey pump, also known as a pressuremaintenance pump, is a small apparatus that works together with a fire pump as part of a fireprotection sprinkler system. Nonchloride accelerators are used in structural concrete because they do not. May 25, 2017 before we understand the working or operation of a concrete batch plant. How does a concrete batch plant work operation of concrete. The differential cylinders move via the piston rods the delivery pistons in the delivery. The second principle kind of solid pump is either mounted on a truck and known as a truckmounted solid.
Safe use of concrete pumps uks largest concrete pump. Qld deir 2005 code of practice for concrete pumping. Benefits of using concrete pump in construction works. Concrete construction article pdf how a concrete pump works 1 free. The pumping operation the concrete pumping operation starts with the. A concrete pump is a machine used for transferring liquid concrete by pumping. How a concrete pump works concrete construction magazine. It is important to understand the basic components and structure of a batching plant. In order to gain a better knowledge of the concrete pump machine working principle, you ought to search for such information online. It has become clear to members of the interest group that such a good practice guide is necessary to define safe systems of work to ensure the solid foundations. In the hopper an agitator keeps the fresh concre t e.
Blast pumps are utilized on the vast majority of the bigger development ventures as they are fit for pumping at high volumes and due to the progressive distinct option for truckmounted solid pumps. Concrete construction article pdf how a concrete pump works 1 free download as pdf file. The pumps at the heart of putzmeisters free flow pumping system are bidirectional, variable displacement piston pumps. Putzmeister offers a range of concrete pumps to choose from.
Steel warehouse body parts, ladders, guardrails, feeding tube, filter, pressure relief valve, high and low level gauge, discharge valves, etc. When planning for the pumping of concrete the principal. A few common valve types are gate, rock, swing tube, ball, or c tube. How a concrete pump works putzmeister concrete pump. As long as the hopper stays full and there are no blockages in the concrete hoses, the process of pumping the concrete goes quite smoothly. Cement silo cement tank of ready mixed concrete batching plant consists of the following components. We have put together the following to help you take care of your olinplmp, and to operate it in a safe manner.
This portable document format \pdf\ file contains bookmarks, thumbnails, and hyperlinks to help you navigate through the document. Refrigeratordefinition, main parts or component, working principle, advantages, disadvantages, application, pdf. When the machine start to pumping concrete, the pumping system works in this way. Aug 01, 2015 once a dosing pump is primed, this means all the air is pushed out of the lines right up to the injector, it is then set for its required dose rate or set to work from its input signal. A day in the life of a concrete pump operator duration.
Though the construction, shape and design of gear, vane and globe pumps are a bit different, they fall under the same category of rotary pumps. We have mobile concrete plants installations in philippiness city like. Concrete piston pump d operate on the same principle as a twin cylinder reciprocating en gine, in w hich one concrete cylinder e draws concrete from t he hopper g on the return. Pumped concrete is the concrete which is transported to heights by means of pumping using concrete pumps. The working of all these pumps are based on the same principle, i. The choice of pump for a given application depends largely on how the pump headflow characteristics match the requirement of the system downstream of the pump. The basics behind a fluid or hydraulic pump is a machine which transfers the energy from its moving parts to the fluid oil, water, hightemperature air, and even electrons passing through the machine. What concrete pumps do, how they work, different types of concrete pump and. However, these cuttingedge concrete pumping machines are equally effective and economical for small to medium sized construction projects, regardless if it a commercial or residential.
Fleuss oil piston pump 1892 pump and gaede s 1905 mercury sealed rotary vacuum and mo lecular drag pump of 1912 also played a role. Depending on the specific pump cell size, up to 20% of the oil. In this 2 minute video, we show how our concrete pumping service works from start to finish. This valve is often used to distinguish one type of pump from another. In 1929, pleuger pumps today pleuger industries pioneered the design of the submersible turbine pump, the forerunner of the modern multistage submersible pump. Refrigeratordefinition, main parts or component, working. The motor is hermetically sealed and closecoupled to the body of the pump. Concrete pumping code of practice 2019 comparative table. According to the working principle of concrete pump, the.
The hopper also has an auger that churns the concrete keeping it liquid and. The working of this type of pump is purely by reciprocal motion of the piston. Fourinch 4 slump is very common with normal weight concrete and is a good average slump for pumping. Also, other crafts can work unhampered by concrete operations. What concrete pumps do, how they work, different types of concrete pump and the advantages of schwing concrete pumps. The pumping operation starts with the discharge of the concrete, usually from a ready mix truck, into. The working principle of concrete pump in the construction process, we often use concrete pump which is a convenient tool to reduce the human labor and improve the working efficiency.
Screw pumps are the only type of pumps which are different from other rotary displacement pumps because of the axial flow of the fluid through their pumping elements. It is known as a boom concrete pump because it uses a remotecontrolled articulating robotic arm to place concrete accurately. Like all construction equipment, concrete pumps required maintenance from time to time. Concrete line pumps are a portable, towable, small concrete pump used for many concrete pumping applications. Pumps and pumping system bureau of energy efficiency 118 figure 6. Concrete pump machine is an effective tool for pumping various concrete materials. It is known as a boom concrete pump because it uses a remotecontrolled articulating robotic arm calle. Concrete piston pumps operate on the same principle as a twin cylinder reciprocating. Co n c rete piston pumps opera t e on the same principle as a.