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The water pump is a simple devices, water pump is the heart of the cooling system and continuously keeps the antifreeze/water mixture flowing through the engine, radiator and heater core.

The water pump which is connected to the fan in your car is installed on the front of the engine. In any case, it runs off a drive belt connected to the crank pulley, so there is something wrong with water pump, check the following ones:

l        Identify the belt and check it for proper tension and cracks.

1) Tighten the belts by adjusting either the alternator or the idler pulley if it is too loose.  

2) Inspect the front of the water pump for leaks of coolant, which is green, or engine oil.

3) Grab the fan and wobble it. If there is play from front to back in the fan, the water pump bearing may be going out.

As is known to all, there is a shaft on which the fan mounts. It drives an impeller, which is inside the coolant passages of the engine. There is an oil passage to the bearing which lubricates it. When the bearing goes bad, the coolant will leak out through the worn out bearing and will drip down the front of the engine. In some cases the impeller will slip on the shaft and the water pump will no longer pump. When this happens the engine will overheat, overheating can be caused by many things but don’t rule out the water pump. In this case the fins may be too worn and not allowing enough circulation throughout the system to keep it cool or the water pump is just leaking past the seal and you have lost too much coolant.

Almost every failed water pump will be the result of a bad bearing. You can hear the bearing squeal when the engine is running, usually. If the belt is tight it is probably a bearing. Listen around to determine that it is not an alternator, power steering pump, or AC bearing that has gone bad. If you see anything leaking out of the water pump housing, it will have to be changed.

Water pumps don’t break as often as they used to, but keeping an eye on your coolant level and changing the antifreeze at the proper intervals will help you eliminate problems to the minimum. A broken water pump will quickly leave you stranded and may cause severe damage to the engine if you try to drive too far without the flow of coolant created by the pump. As always if you are worried about the water pump take it to a reputable garage where they can at least pressure test the coolant system and see if there is weakness in system anywhere.

Although problem-free pump operation is the primary goal of all pump operators, achieving that goal is not a simple matter. The key components of a pump — mechanical seals, impellers, couplings, roller bearings and housings — are all subject to wear. Keeping a pump in good working condition is essential for cost-effective and reliable operation of plants and systems. Unplanned downtime can ruin production schedules and adversely affect a facility’s bottom line.

“Any system can only be as functional as the lifespan of its weakest component” — this statement applies to many types of products — but is especially true of mechanical seals. While mechanical seals are one of the key components of a pump, they also have one of the shortest average service lives. Mechanical seals are recognized to be responsible for most pump failures and consequently represent the highest cost for pump repairs. Therefore, reducing the MTBF (mean time between failure) or the MTBR (mean time between repair) can significantly improve pump operations and save money.

When working properly, mechanical seals are generally safe and reliable components that operate virtually wear-free. Problems occur when the sliding faces of a mechanical seal are not adequately lubricated, resulting in a dry-running condition that ultimately causes the destruction and breakdown of the seal. Industry surveys have shown that dry running or inadequate lubrication are responsible for more than 50% of all mechanical seal damages; consequently, it is safe to state that approximately 20% of all pump failures are due to poor lubrication or dry running of the mechanical seal faces.

In an analysis of the service life of pump components, it was found that mechanical seals, with an average service life of only 1.2 years, are the weakest link in terms of pump components, compared to the next weakest component, bearings, with an average service life of three years. To minimize pump repairs and downtime, it would be advantageous to pump operators if the average service life of the mechanical seals increased to match the service life of the bearings.

By using mechanical seals coated with DiamondFaces, the average service life of mechanical seals substantially increases. This allows pump operators to schedule preventive inspections of mechanical seals and eliminate or reduce the costs of unplanned process interruptions. By increasing the service life of mechanical seals, approximately every second pump repair, along with associated downtime and production disruption, can be avoided.

These diamond crystals grow together to form a closed layer. The separation process is stimulated with tungsten filaments stretched horizontally or vertically across the reactor and heated to approximately 2,000 C. This arrangement of the tungsten filaments is one of the key factors for ensuring that the coated seal faces are perfectly flat and uniformly coated. DiamondFaces guarantees the evenness of the sealing faces, which is essential for the functional reliability of mechanical seals.

Mechanical seals coated with DiamondFaces offer many advantages for users such as:

·        Virtually no wearing of the diamond coating

·        Reduced sliding-face friction

·        Extension of MTBF and MTBR values

·        Significant energy savings

·        Increased application range

·        Shortened ROI (return-on-investment

These advantages can make the pump have long life and can serve people for a long time.

A heat pump is a device that uses a small amount of energy to move heat from one location to another. Heat pumps are usually used to pull heat out of the air or ground to heat a home or office building, or they can be switched into reverse to cool a building. If you know how an air conditioner works, you already know a lot about how a heat pump works, because heat pumps and air conditioners operate in very similar ways. And that’s the reason why it is becoming popular. Heat pump are all around you, reverse cycle air conditioners are heat pump, as are dehumidifiers, many heat recovery/water heating units and process dryers.

Heat pumps are a unique kind of heating system, because they can do the work of both a furnace and an air conditioner. Thus, there’s no need to install separate systems to heat and cool your home. Heat pumps can also work extremely efficiently, because they simply transfer heat, rather than burn fuel to create it. Now with the rapid development of technology, heat pump technology is available today, heat pumps offer levels of efficiency unattainable by boilers or electric heating, heat pumps reduce CO2 emission and are recommended by the government sponsored carbon trust as a renewable technology.

Heat pumps work best in moderate climates. If you live in a moderate climate, using a heat pump instead of a furnace and air conditioner may help you save money on your utility bill. Most heat pumps are somewhat limited by the cold, however, so it is important that you learn which kind of heat pump is best for your area before installing one in your home or office building. If you install the wrong kind of heat pump, you may end up paying even more in energy costs than you do already

Heating and cooling uses the relatively constant temperature of the earth to heat and cool homes and businesses with 40% to 70% less energy than conventional systems. While conventional furnaces and boilers burn a fuel to generate heat, heat pumps use electricity to simply move heat from the earth into buildings, allowing much higher efficiencies. The most efficient fuel-burning heater can reach efficiencies around 95%, but a heat pump can move up to 4 units of heat for every unit of electricity needed to power the system, resulting in a practical equivalence of over 400% efficiency.

A pump is a device used to move fluids, such as liquids or slurries. A pump displaces a volume by physical or mechanical action. Pumps fall into five major groups: direct lift, displacement, velocity, buoyancy and gravity pumps. Their names describe the method for moving a fluid. Pump can be simply divided into several catalogs, such as, positive displacement pumps, buoyancy pump, impulse pumps, velocity pumps, gravity pumps, steam pumps and so on.

Pumps are used throughout society for a variety of purposes. Early applications include the use of the windmill or watermill to pump water. Today, the pump is used for irrigation, water supply, gasoline supply, air conditioning systems, refrigeration (usually called a compressor), chemical movement, sewage movement, flood control, marine services, etc. Because of the wide variety of applications, pumps have a plethora of shapes and sizes: from very large to very small, from handling gas to handling liquid, from high pressure to low pressure, and from high volume to low volume.

One sort of pump once common worldwide was a hand-powered water pump over a water well where people could work it to extract water, before most houses had individual water supplies.

From this came the expression “parish pump” for “the sort of matter chattered about by people when they meet when they go to get water”, “matter of only local interest”. However water from pitcher pumps are more prone to contamination since it is drawn directly from the soil and does not undergo filtration, this might cause gastrointestinal related diseases.

Today, hand operated village pumps are considered the most sustainable low cost option for safe water supply in resource poor settings, often in rural areas in developing countries. A hand pump opens access to deeper groundwater that is often not polluted and also improves the safety of a well by protecting the water source from contaminated buckets. Pumps like the Afridev pump are designed to be cheap to build and install, and easy to maintain with simple parts. However, scarcity of spare parts for these type of pumps in some regions of Africa has diminished their utility for these areas.

Finally, let’s talk about pump efficiency. Pump efficiency is defined as the ratio of the power imparted on the fluid by the pump in relation to the power supplied to drive the pump. Its value is not fixed for a given pump, efficiency is a function of the discharge and therefore also operating head. For centrifugal pumps, the efficiency tends to increase with flow rate up to a point midway through the operating range (peak efficiency) and then declines as flow rates rise further. Pump performance data such as this is usually supplied by the manufacturer before pump selection. Pump efficiencies tend to decline over time due to wear (e.g. increasing clearances as impellers reduce in size).

One important part of system design involves matching the pipeline headloss-flow characteristic with the appropriate pump or pumps which will operate at or close to the point of maximum efficiency. There are free tools that help calculate head needed and show pump curves including their Best Efficiency Points (BEP).

Pump efficiency is an important aspect and pumps should be regularly tested. Thermodynamic pump testing is one method.

When we are buying vacuum pump, we should consider the following issues, and the issues are listed as follow.

1, the working pressure of vacuum pump should meet the request of maximum vacuum and working pressure of vacuum device, for example, the vacuum coating should has 1x 5mm Hg of vacuum, so when we are choosing vacuum pump, we should choose those whose vacuum is at least 5×10-6mmHg. Generally, the vacuum of choosing vacuum pump should be higher than vacuum device.

2, select the right working place for vacuum pump, every vacuum pump has a range of working pressure, for example, diffusion pump whose working pressure is between 10-3 and 10-7mmHg.

3, when vacuum pump is working under its working pressure, we should discharge all gas which is produced at the process of technology.

4, combine the vacuum pump correctly, because vacuum pump exhausts selectively, so we should combine different pumps, and make them make up for each other’s shortcoming.

5, vacuum device has request about oil pollution, when the device asks for working without oil, we should choose all kinds of pumps which works without oil.

6, we should know the ingredient of gas which is exhausted from vacuum pump, if gas contains vapor and corrosive gas, we should consider installing aided device at the pipe of pump, such as condenser, dust collector.

7, the influence of oil vapor which is exhausted from technology upon environment. If the environment do not allow pollution, we can choose vacuum pump which works without oil.

8, we should know whether vibration which is produced when vacuum pump is working has influence upon technology process or not. If the technology process doesn’t allow it, we should choose pump which has no vibration when it is working, or we can take steps to prevent vibration.

9, the price of vacuum pump and its maintenance.

Generally speaking, in recent years, our country’s agricultural water pump industry has been developing rapidly, all kinds of main economic indicators are keeping increasing steadily, but it exposes some defects in the process of development which government, association organizer and enterprise should pay attention to and find effective measure to solve. The following is some suggestions for defects which will appear in the process of using.

1, we should invest more money into this industry, and make plan for it. We continue implementing the policy which is about getting a discount when buying agricultural machine. Governor should invest those companies which have high quality products and good reputation. Agricultural water pump should make plans according our country’s 5 or 10 years’ developing plan, in that way, agricultural water pump industry can combine this industry’s feature and focus on developing its products.

2, improve manufacturing standard and product’s quality of agricultural water pump industry, we should create reasonable plans and increase the transformation of agricultural water pump industry. The current condition of agricultural water pump industry is large quantity, small scale and scattered layout.

3, optimize the structure of agricultural water pump manufacturing industry. We should grab the opportunity of developing agricultural mechanism right now, and promote structural adjustment of agricultural water pump industry, and form reasonable layout.

4, strengthen self-discipline of enterprise, and form orderly competition. Competition is an important feature of market-oriented economy, without competition, the market doesn’t have its vitality. The basic factor for enterprise’s survive and development is improving the quality of products and the construction of enterprise’s band.

5, continue enhancing the project of saving energy, form the energy-saving industry, according to our country’s long term plan, all industry should confirm the regulation of energy- saving project. We should improve the efficiency of pump and promote the products which have low energy-consumption.

Since 1960s, our country’s pump in agricultural application has developed a lot, from manufacturing the first small-scale submersible pump to produce more than twenty series of agricultural products and more than three thousand regulations. It can basically meet the demand of agriculture, village, farmer’s daily life and other areas, some series of its products will be exported at a large scale. Under the guide of some leaders and experts, with the development of China’s reform and open, the government pay continuous attention to the three agricultural issues, so our country’s agricultural water pump industry is developing so fast, the gross product of this industry has been more than 10 billion. In recent years, under the influence of global economy crisis, our country’s agricultural water pump industry has been suffered in this recession, and the industry still keeps a fast development.

In 2007s, our country’s agricultural water pump industry has realized the task of sustainable development strategy in entire economy. The production scale is increasing continuously, the production structure and structure of management are optimized, every aspect of this industry enters a new chapter.

In 2008s, the global economy crisis brings influence to our country’s water pump industry, the production of enterprise is decreasing rapidly, so is the export value, but under the policy of national three agricultural issues and the large amount of investment, domestic agricultural water pump market has not been influenced by it, and this industry develops continuously, keep an increase in the sales.

In 2009s, with the worldwide economic warming, especially the rapid economic warming of domestic economy, the sales of our country’s agricultural water pump is warming, at the same time, with the decrease of raw material’s price, the profit of this industry is increasing continuously, and export situation is getting better.

 

The rotary piston water pump is widely used in agriculture and industry, now it is becoming more and more popular in planting, and because of its advantage, it plays an important part in our daily life, and is widely used in agriculture, industry, fire industry.

The most outstanding advantage of rotary piston water pump is its high efficiency and energy consumption, as is known to all, the value of energy-saving during its working period is far more than its value, the following are the application area which it works.

1, high-head pump, when centrifugal pump is used at high efficiency, the head of one stage pump is about 50 meters. When we are pursuing one stage pump’s head, it may give rise to the decrease of efficiency. So in some areas which need high head, we should use multi-stage water pump to supply water. When we supply water to place which is two hundred meters high, we should use multi-stage water pump to supply water, but if we use rotary piston water pump, we can use one-stage pump to get the same effect.

2, fire water pump, rotary piston water pump is a kind of pump which has constant flow and high compression so it is especially suitable for fire industry. The flow of rotary piston water pump is constant and don’t change with the water pressure, so the firefighter can change the water pressure through the change of area.

3, deep well pump, we can change pump into smaller radius, in that way, we can maintain high efficiency and the pump can works under low speed, all these ensure the advantage of rotary piston water pump.

4, building water-supplying pump, nowadays the building are becoming more and more high, so it is not suitable to use running water to supply the whole building, we should press the water to the top, through using rotary piston water pump, we can realize given flow through compress the water in tank at every floor.

5, other pumps, rotary piston pump has outstanding advantage of comprehensive performance, and is easy and convenient for manufacturer to produce. We can design it according to its purpose, and make it widely used in every area.

As a kind of technology which can reduce the pressure of global warming, heat pump system is popular among global market these days, recently in the energy-saving and environment-protecting forum about air-conditioning, the president from Sweden heat pump association Martin Forsén said that the application of heat pump system is not only in air-conditioning. In many countries which is the member of European union, heat pump system begin to replace oil-fired boiler and gas boiler, which reduce the usage of mineral fuel, and reducing the use of mineral fuel is the effective way to decrease emission of carbon dioxide.

According to statistic, in recent years, the application of heat pump spread widely in Austria, Finland, Germany, France and other European countries. In 2009s, the total sale of heat pump system is 520,000, which has a increase of more than 110% when it is compared with the one in 2005s.

According to Martin Forsén’s speech, France, Germany, Norway have mostly developed market, take Sweden for instance, in 2009s, the sale is reaching 116900, more and more people is focusing on the protection of environment, this give rise to the high development of heat pump market, now in Sweden there is an approximate 60% of people using heat pump production, and Sweden government promises that they are trying to becoming the first country who don’t use oil, when the year is approaching 2020. the main resource will be regenerative energy, in order to realize this purpose, Sweden has put large amount of money and effort in studying the regenerative energy.

According to information, European union and some European countries have already distributed the regulation and positive policy to promote heat pump products, for example, in the January of 2003, European union distributes energy efficiency in building directive, which encourages the member of it to improve the building energy efficiency to consider the condition of outdoor and cost efficiency.

Now the main obstruction of promoting heat pump products is the quality of products and the installation of seller, so the pump industry association is eager to get rid of the misunderstanding of knowledge through the symbol of quality and courses.

In the period of highly development of information technology, pump can not be counted as high-tech product, but it still plays an important part in the development of gross national economy, and it is widely used in resource, aviation, aerospace, steel, military industry which is related to the safety and economy of China. People called pump as the heart of industry, exactly it is true. As a country which is a big manufacturing one, a country famous for its large pump market, what is the gap between the current condition and future of our country’s pump industry and foreign countries’? what aspects of pump industry do we have the chance to focus and improve?

1, our country’s pump industry lacks of innovation ability in technology.

After the foundation of new people’s republic of China, the pump industry has been developed for fifty years. Although we are frustrated sometimes by the technology in the process of development, in the meanwhile, we achieve great success, cultivate a lot of experts on water pump. After China open and reform, a lot of advanced technology has been introduced into domestic market, more and more companies form the direction of introducing technology abroad, although China encourages companies to introduce, absorb, innovate technology, but actually, few countries absorb technology from foreign countries, we are still in the stage of imitating foreign technology, so we should break the routine, and be eager to develop our own technology.

2, our country is short in having companies which are competitive.

First we lack of elites and technology in nation-owned companies, a lot of working garages is abandoned, under the circumstance of market-oriented economy, with more and more foreign enterprises enter domestic market, most of them are acquired and run into bankruptcy. High-end pump products which is related to the safety of nation is monopolized by foreign pump industry.

3, we lack of technician, with the retirement of technician which is graduated in 1950s and 1960s, a lot of college students can’t replace the position of the older one, and a lot of foreign countries’ human resource department employ people with high salary, which make our country’s technician run into foreign enterprises.