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In many instances, redi-mix concrete is simply driven to the site and poured into the forms for the finishing crew to complete their task. In cases where the building site is in an infill property, with large slabs or in multistory buildings, it is not always possible to move the truck to where the materials need to be poured. In these cases, concrete pumping services can be used to move the mixture to the place where it is needed.

Anyone who has had to move wheelbarrow after wheelbarrow loads of wet cement will appreciate the services offered by this service. A hydraulic pump is used to move the material from the mixing truck to where it is to be used with very little manpower. Thus, when a large slab is being poured for a big box store, the material is delivered to several different points and then spread by the finishing crews to its final resting place.

One of the most common types of concrete pumping equipment is the boom truck. The boom contains the pipeline through which the materials are moved. The boom may be easily moved from one location to another in order to supply the exact amount of materials needed for the crew.

In many large pours, more than one boom truck will be used to simultaneously provide the redi-mix. In this case, there will be several finishing crews working together to complete the pour simultaneously.

When the mix is being poured at several different levels, the first level may be poured and then supporting materials moved into place before pouring the second level. Once the supports are in place, the boom truck is used to supply the redi-mix needed to complete this level. The process is continued until the full height is reached. With many steel structures, the structure is completed before any pouring of slabs.

Smaller jobs that do not require a boom truck may use a portable pump. This device is attached to a hose that can be manually maneuvered to direct the fill. The mix is poured into a hopper and then distributed through the hose. The portable device has a lower rate of moving materials so it may not be appropriate for very large jobs.

Many swimming pools are made of gunite or shotcrete. This is a special concrete material that can be sprayed into place using a special concrete pump. These pools allow the customer to custom choose the pool that they want. These pools are an ideal choice for persons wanting to add a custom spa to the pool construction. These pools are among the longest lasting of all in ground pools but do require special care.

When building does not lend itself to a redi-mix truck driving up to the site, concrete pumping services may provide the answer. Use of boom trucks or other devices can direct the materials to the needed spot quickly and efficiently. Whether building swimming pools, new homes or high rise buildings, these services will help to direct materials where they are needed.

A tractor cooling system comprises of several components, including a water pump and a radiator. These two major components of the tractor’s cooling system differ is its functions, breakage problems, and corrective and preventive maintenance procedures.

A basic pump is made up of three major parts, and a series of smaller minor parts.

The major three components are the outside housing, the central shaft, and the water impeller. One end of the impeller shaft fits into the circular impeller, and the other end of the impeller fits into the housing. The impeller shat fits into the housing via a sealed bearing and a copper bushing called a shaft slinger.

A section of the impeller shaft protrudes from the housing, and onto that is fitted a single or double groove pulley. A key is used to ensure that the pulley does not slip o the shaft.

The continuous rotation of the shaft, which turns the impeller, pulley and fan blades, will wear out over time due to normal wear and tear. The sealed bearing will damage over time, as are the copper bushings. The impeller can corrode overt time by the continuous cavitation of the coolant fluid passing through it.

These damaged bearings and bushings, will give rise to slight vibrations initially, and then to small leakage of coolant through the bearings area. At this time, its advisable to change the water pump.

In older Allis Chalmers, Case, IH, John Deere, Massey Ferguson, Ford, New Holland, Kubota, Deutz, David Brown, Farmall tractors, the water pump pulley is attached to the fan hub. If the leaking water pump is not changed, then there is the risk of the bearing completely breaking apart. This complete braking up will render the pump pulley and hub to rotate in a hap hazard fashion, and the fan blades can actually cut into the radiator, producing additional failed components i.e., the radiator and the damaged fan blades.

In newer tractors the fan blades are electrically driven, and is separate from the hub and pulley system.

Regular inspection of the pump can prevent this, or better yet, the pump should be changed after a certain amount of operational hours. A leaking pump can be quickly repaired using a water pump repair kit. The repair kit components can include an impeller, impeller shaft, gasket, bushings, bearings, and retailer clips.

If the housing of the pump is damaged, then the entire water pump needs to be changed.

On some housings are stamped a number. Get that number and call your parts supplier.

During these times of urgent and worldwide concern about carbon levels in the atmosphere, global warming and our greedy and excessive use of fossil fuels, I believe the most exciting “new technology” for power generation is geothermal. The thing is though, it is not really a new technology - rather it is simply just and underutilized one until recent times.

By way of alternative energy sources, we do have massive investments in solar and wind power farms, and they do have merit and are clean, renewable sources.

However, wind and solar do have one severe limitation - they both can only produce power when it is sunny or windy. This creates a massive storage problem for the electric power provider when it is night-time and not windy. Alternatively, we can rely on this clean energy source as a limited solution - requiring a continued commitment to fossil fuels which should not be the long-term goal at all.

Geothermal on the other hand can produce electricity 24 hours a day, every day of the year.

But what is geothermal?

Simply put, it means digging a very deep bore-hole several kilometers into the Earth’s crust, and using heat pumps to circulate cool water from the surface down to the “hot rock” formations below. The effect of this is that the water heat pump then brings this hot energy source to the surface as high pressure steam, which is then used to drive the electric power generator and to feed the power into the electricity grid - continuously 24 hours every day.

After the turbine has been driven by the high pressure steam, this water vapor is condensed and cooled to then be re-circulated back down to the hot rocks in a continuous circuit. And this cycle is never-ending because the temperature of the Earth’s inner core re-heats the hot rocks.

There is a significant capital investment required upfront, like there is with all alternative power technologies. But long-term, the running costs are almost nil, and the geothermal heat pump cost is quickly amortized.

Plunger pumps are today used in a variety of application areas in the automotive sector. These include gearbox, belt drive, or coupling drive systems driven by electric motor or gasoline driven systems. Unlike piston pumps they are ideal only for lower pressure applications.

They have the capability to be configured in four different ways namely direct-acting or indirect-acting; simplex or duplex; single-acting or double acting; and power pumps to use in specific industrial sectors. So, whatever your area of operation is, it is always recommended that you use only those plunger pump variety that meets your volume and pressure requirements. And yes, for their smooth running, it is very essential that they are maintained properly. This ensures that you have to replace them only after 5 to 10 years in service. And yes, if you are ready to make huge investments then it is advisable that you go for proper servicing and accordingly it would run efficiently for 40-50 years.

Among the well known names in the plunger pumps industry are Gardner Denver and B-Master etc. Whatever brand you go for always make sure that you purchase a packing gland wrench for tightening plunger packing on all kinds of plunger pumps. Also, do get a hammer style valve cover wrench for pumps with threaded valve covers.

Also make sure to that you use the high pressure system accessories to match the performance and liquid-end construction of your pumps whether they are pressure washer pumps, or tri-plex plunger pumps. These accessories go a long way to assure safe and optimal system performance. They also help in the proper maintenance of your pumps by providing optimal system protection, regulating pump performance and also expanding the flexibility of the system.

The various accessories for plunger and piston pumps include nozzles, pressure regulators, trigger guns, underloaded, secondary relief valves, gauges, pressure regulators and filters among many others. Other maintenance tips for plunger pumps include checking for leaks and tightening the screws if you find oil dripping for more than 3 to 5 drops every minute. But, also take extra care not to tighten them more than is required as this may result in their breakdown.

This is especially true in the case of ceramic plungers that are used in salt water environment. As the replacement cost of plunger pumps or, for that matter any other pumps is quite costly, it is imperative that you take proper preventive measures in the appropriate time.

Many industrial businesses use pumps in manufacturing. Municipalities use pumps as well in public water lines, sewage treatment and so on. The cost of industrial pumps can eventually run very high. For this reason many choose to use surplus pumps. Buying surplus pumps and machinery can easily reduce the cost to your overall bottom line because many times you can get working and low use pumps at a great value, often saving thousands on buying the same model brand new.

Industrial surplus pump dealers pull from various sources such as plant shut downs, canceled projects, manufacturers overstock, and a long list of contacts that all sell their unsold stock or unused equipment to make space for newer inventory. Surplus pumps and industrial machinery isn’t always out-of-date or no longer functioning.

Many times surplus pumps are still in great condition. In fact surplus you may purchase from an industrial machinery dealer comes in many conditions. Be sure that a surplus dealer makes it clear what kind of condition each and every pump comes in. Surplus can be new (but without a manufacture’s warranty), unused new stock, old or no longer manufactured, used lightly, rebuilt, or pumps that were used but still have plenty of use-life remaining.

Often times purchasers may be hesitant to consider surplus pumps and machinery because there is a stigma that may lead them to think that a surplus pump is prone to break down or continual maintenance but surplus industrial machinery can often times work just as well as newly produced pumps and machinery.

When considering a surplus pump dealer you’ll want to be sure that the dealer has a far reaching background in the use of industrial pumps and knows the industry well. They should be able to keep their costs to a minimum to ensure you can get maximum value for your dollar. Ask them if they have fabrication, rebuild or repair facilities as often this is a good indication of their knowledge and expertise in the industry as well as being able to repair a pump that has seen a lot of use. Many times you can get a good deal on an older pump and have them rebuild it.

A surplus pump dealer should also have the ability to purchase new or aftermarket OEM parts, motors, etc. When contacting them ask them if they have a fax-back form for quote estimates on parts and repair. This way you know what the cost is beforehand. A good surplus dealer should always be willing to work with you on the price and like any good salesman be willing to negotiate and win your business over. Be sure they have a friendly demeanor.

A pump is a mechanical device which is used to move a liquid or any fluid by displacement action. Today a pump has become indispensable name in any industry. You name any field of production or work and you will hardly find it missing there. Be it is an agriculture, coal mines, electricity generation, water supply anything, you will see pumps there. Depending upon the various functions performed, it is majorly divided into following four categories:

1.Buoyancy Pump
2.Gravity Pump
3.Displacement Pump
4.Velocity Pump
5.Direct Lift Pump

Sometimes a combination of pumps is used to provide more efficiency to a system. For example Combs Norm Pumps. Combi Norm Pumps is a sequence of norm pumps. The purpose of such type is to draw water from seas, underground, brines etc. In large plants where a heat exchanger unit and condensers are used these types are used. Since its single is not sufficient for such large applications therefore a combination of pumps is used. Likewise Combi Prime Pumps is another category. It is just like any normal one but it uses a combination of pumps to make a sequence.

A line pump is made up of cast-iron, stainless steel & alloys and is suitable for large industrial applications. It is advisable to use Center line pump at high temperature to cause any misalignment of shaft. Its mounting feet is kept in aligned with the shaft center line. Due to this structure the casing opens equally in both the directions and prevents any misalignment on one side. To increase the efficiency of a system,  Combi Center Line Pumps are used. These are coupled together for working. Its life goes on decreasing due to the wearing, cause by the rotation of its inner static and rotating parts. These affects the internal working of a pump,thereby, reducing the overall efficiency of a system.

Like any other system, we can calculate the efficiency of pumps. Its efficiency is the output that we get on comparing the amount of power delivered to the actual power we are putting in it. Similarly we can calculate horse power of any pump. This is not a power of any horse as you might have started thinking. In fact it is a unit of power. Generally a horse power is equivalent to 735.5 watts.

What is a concrete pump? It is a tool utilized to transfer liquefied concrete through pumping. There are two kinds of concrete pumps.

One type is on a Boom trucks and is self-contained units consisting have a truck and frame, and the pump itself. It derives its name because they a remote controlled robotic arm called the boom to put place with precision accuracy. Boom trucks are mostly used to pour concrete on everything from slabs and medium high-rise buildings, to large commercial and industrial projects. They can range from the single-axle truck mounted pumps geared for greater maneuverability, able to work in small spaces, and cost effective value, to very large, six-axle rigs utilized for their powerful pumps and very long reach on high-rise and other large-scale projects.

Because of their reach, boom trucks often stationary in the same place for the entire time concrete is being poured. This allows ready mix trucks to discharge their loads directly into the pumps hopper at one central location and helps to create a more efficient jobsite traffic flow.

The second kind of concrete pump is usually mounted either on a truck and is called a truck-mounted concrete pump or placed on a trailer, and it is generally referred to as a line pump or trailer-mounted concrete pump.

Line pumps are extremely versatile, portable units typically used to pump not only structural concrete, but also grout, wet screeds, mortar, shotcrete, foamed concrete, and sludge. Concrete pump manufacturers have a diverse line pumps to meet different needs.

Line pumps generally utilize ball-valve-type pumps. While the smaller models are also known as grout pumps, numerous can be utilized for structural concrete and shotcreting where low-volume volume is needed. Another application is for repairing underwater concrete, filling fabric forms, placing concrete in heavily reinforced sections, and building bond beams for masonry walls. A few of the hydraulically driven models have pumped structural concrete at outputs exceeding 150 cubic yards per hour.
Cost for ball-valve pumps are relatively inexpensive and there are few parts that wear out. Due to its simple design, the pump is simple to clean and maintain. The units are typically small and easy to maneuver, and the hoses simple to manage.

This pump necessitates steel or rubber concrete placing hoses to be that is manually attached to the outlet of the machine. Those hoses are joined together and lead the concrete requirements that need to be poured and placed. These normally pump concrete at lower volumes than boom pumps and are used for smaller volume concrete pouring applications such as swimming pools, sidewalks, and single family home concrete slabs and most ground slabs.

Another type is a skid-mounted and rail mounted concrete pumps, but these are not common and only used on specialized jobsites such as mines and tunnels. Concrete pumps are almost never noticed by people but they play a critical role in our life.

Peristaltic pumps are positive displacement pumps, typically used to pump sterile and aggressive fluids that should not be contaminated during the pumping process. This pump works on the same principle as peristalsis, a natural phenomenon observed in living organisms - such as the esophagus of humans. The pump consists of a number of shoes (typically two) that compress flexible tubing along the circumference of a round pump casing. In the case of peristaltic pumps with two shoes, the distance between the rotary shoes is constant. This invariable distance between the two shoes generate the same amount of vacuum for suction regardless of the rpm of the motor that rotates the shoes. The quantity of fluid encapsulated in the subsequent phase of vacuum generation is proportional to the vacuum generated. Thus, the flow rates of peristaltic pumps are precise over three sequential constrictions of the tube. The consistent nature of the pump’s output flow rate makes it viable for metering and dosing applications.

Factors affecting flow rate:
Though the output per cycle of the pump is indifferent to the rpm of the motor, the flow rate is, however, directly proportional to the rpm of the motor. Variations in the rpm of the motor produces relevant change in the output flow rate, which can be demonstrated by assembling a variable frequency drive (VFD) in the peristaltic pump system. The rpm of the motor needs to be constant after the required flow rate is achieved, since metering applications require an invariable flow rate over a long period of time.

Metering application and performance characteristics:
Peristaltic pumps are widely used as metering pumps in the medical field due to isolation of fluids during pumping. Accuracy of peristaltic pumps’ flow rates ranges between ±0.25% and ±5%. Primarily these pumps are used for infusion of medicinal fluids because of their ability to infuse at a rate as low as 0.1 ml/hour. Such slow infusions can prevent blood clots in the vein. Sensitive administrations like these require pressure guards to avoid infusion of air caused by the lack of source fluid. An optical device is used for detecting bubbles introduced in the system during the pumping action. The pump’s working mechanism incorporates an anti-siphoning mechanism and thereby makes them suitable for medical metering applications. Apart from metering applications that require a constant flow rate, known-volume metering applications can also be served by peristaltic pumps. Known-volume metering is also known as dosing. Dosing applications requiring both constant flow rate and constant volume per dosage, use peristaltic pumps with rpm regulators and pinch valves. These pumps calculate the volume by extrapolating flow rate and time. Certain applications require only accurate dosage of the fluid and are catered by peristaltic pumps that lack rpm regulators. The volumetric output of pumps lacking rpm regulators is calculated by deducing the number of rotations and output volume per three occlusions. The number of rotations or the number of occlusions is calculated by using an angular measurement device.

Comparative analysis of metering pumps:
Peristaltic pumps operate without any moving parts or environment in contact with the fluid; this gives them an advantage over other metering pumps in medical and pharmaceutical applications. This advantage is restricted within applications requiring fluid isolation. Other metering pumps such as a diaphragm pump offer better chemical and physical compatibility. The pressure handling capabilities of the diaphragm pump significantly eclipses the pressure handling capabilities of peristaltic pumps. Solenoid operated metering pumps offer better accuracy over peristaltic pumps and their ability to be operated by conventional 4-20 mA allows industrial compatibility. Peristaltic pump users incur significantly lower maintenance costs when compared with other metering pumps. Metering applications determine the choice of pumps and therefore all types of metering pumps have distinctive market penetration.

Most people who first hear of the term progressive cavity pumps would not even know what it means much less be able to visualize it. What they do not know is that it is very commonly used and they even know what it looks like, even if they don’t know what it is called.

If you have visited a fast food restaurant and you see those containers with a cylindrical thing that gradually turns the slushies, or if you see the clerk get a measure glass and puts it in a dispenser where the liquid flows down into the glass and stops when the glass is full automatically, then you know what a progressive cylindrical pump is.

Yes, it is that thing that keeps the slushies slushier and can dispense the exact amount of fluid into the waiting cup or glass.

What is it?

By definition a progressive cavity pump is also known as the following: progressing cavity pump, eccentric screw pump and cavity pump. Via a pump, it transfers fluids progressively. The fluid passes through a series of small cavities while the rotor is turning. As the rotor continues to turn, the cavities progress from suction to discharge end of the progressive cavity pump carrying the fluid. The action allows for a precise control of the flow of fluids in such a way they will make sure that the flow is consistent and steady, therefore very easy to manage.

Applications

These pumps are used in a number of applications which have to have precise measurements of volumetric flow: oil pumps, water pumps, drilling for oil, drilling for natural gas, food and drink pumping, slurry pumping and stormflow screening.

Other Uses

Wineries also can benefit from this type of pump as the distillation process demands well calibrated and measured flow of the liquid.

Shipyards and other marine industries also use these pumps for their engines which need precisely measured lubricants and for filling the tanks with the fuel.

Construction companies also make full use of these pumps when they have to move the cement to a location and to pour in the grout in the right areas.

Benefits

This makes it possible to move fluids at a slow pace while applying different levels of pressure on them. There is hardly any wear and tear and if there is it can be very gradual and would take a long time. This makes it possible to be able to maintain a balance which is constant on the pressure while at the same time it can give the operator a great deal of control which cannot be commonly done in other kinds or types of pumps.
Development

This type of pump first came out in the 1930’s and it was called different names. Most of the names were based on the use of the pump while others were based on the brand names or of the manufacturing company’s names. However, even if the name was varied its basic function of progressively moving fluids through a series of controlled channels or chambers remain exactly the same up till now.