ourpump.com blog

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.

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.

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.

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.

Nowadays with the ever increasing development of scientific technology, the level of automation of pump and vacuum device is more and more high, and the plunger pump is the mostly used pump in pump industry. The famous advantage of plunger pump is that it has low level of wear, high efficiency, the low level of pressure fluctuation of radial plunger pump.

The following ones are methods about how to extend the life of hydraulic plunger pump. As is known to all, the efficiency of hydraulic system depends on the volumetric efficiency of hydraulic pump, when the volumetric efficiency is lower than 72%, we should repair the pump to recover the ability, for example, replace the bearing and aging seals.

 1, Take hydraulic pump for instance, plunger pump which has direct axis and swash plate can be divided into self-priming oil pump and pump which work through the pressure of the oil. Self-priming oil pump works through oil pressure and air pressure, when the air pressure is lower than standard pressure, it will cause the wear between plates, so the operator should examine the plunger pump twice or more than twice a day, when hear abnormal noise, we should stop the pump and fill the pump with oil.

2, produce a special kind of film coating at the surface of the plunger, this coating has the function of reducing wear, resisting wear and lubricating. When it is broken, we should hand to those professional companies to solve it. 3, the life of plunger pump is related to the daily maintenance, the quality and quantity of the oil, the purity of oil and so on. The effective way to avoiding the wear is to reduce the size of particle in hydraulic oil, we should use the parts which is produced by the original company, in that way, it will cause fewer damage to the application of plunger pump.

Pump is most widely used product in domestic market, not only in agricultural machinery, but also in industrial machine. Pump can be simply divided into different catalogs, such as gear pump, centrifugal pump, vacuum pump, hydraulic gear pump, screw pump, high pressure gear pump and so on. The basic use for these pumps is liquid transportation, which includes water, oil, emulsion, liquid metal and gas mixture. Because of the widely use of these pumps, in China the production value of pump is more than 7 billion dollars, and pump consumes 20% of national generating capacity.

Pump is a kind of machine which is used to inhaling and discharging liquid, the basic theory is that the pump is controlled by prime motor, driving the fluid move forward. According to the theory of pump, pump can be divided into vane pump, jet pump and pump which depends the periodical change of volume to work, vane pump can be divided into centrifugal pump, vortex pump and mixed-flow pump by the blade of pump and the structure of flow.

   Now we’d like to introduce the working theory of centrifugal pump, when start the pump, it is filled of liquid, after the start, the blade is turning at a high speed by motor, so is the liquid between blades, under the action of centrifugal force, liquid is thrown away from centre of pump, and enter the snail-shaped shell, the flow is becoming narrow, the liquid slow sown, and change kinetic energy into static energy, in the end, the liquid is discharged from the pipe, and be delivered to the working position, when the liquid is thrown away from centre of pump, the centre of pump become vacuum, because pressure outside of pump is bigger than inside, so the liquid is pressed into the pump, and keep the pump working.

   Self-priming centrifugal pump is a new kind of pump which is produced from the introduction, digestion and improvement of pump technology abroad, now it is wide used in oil industry, we can use it to transport gasoline, coal oil, diesel oil, seawater, water and industrial liquid. Here are the features of self-priming centrifugal pump, it has simple structure, high efficiency, long life, low maintenance, excellent self-priming ability and is convenient for operation, when we use self-priming centrifugal pump, we don’t have to pave valve in the pipe, only thing which we need to do is guaranteeing enough oil in the pump.

   Pump will be widely used in every area of China transportation market, and with the introduction of foreign advance technology, pump industry will develop better.

Work on restoring an historic water pump near the remains of a canal in Cardiff is due to start within weeks.

Historic monuments body Cadw and Cardiff Council have agreed to fund the project involving Melingriffith water pump and wheel in Whitchurch.

The 200-year-old pump stands on what is left of a tinplate works and near the Glamorgan canal, which brought iron and coal from the valleys to Cardiff docks.

The pump supplied water to the canal but has been disused for 67 years.

The £100,000 restoration project has been delayed, after bats were found roosting at the site, off Ty Mawr Road.

A bat expert will be on site to make sure the pipistrelle bats, a protected species, have all moved to their winter roosts.

Excited

The pump was first restored in the 1980s in an award-winning £300,000 project by industrial archaeologists and the Inland Waterways Association, but it needs work again.

The Friends of Melingriffith Water Pump are supporting the latest restoration, which is expected to start in February with the dismantling of the pump.

Much of the work is to take place in workshops throughout the rest of winter and spring, including refurbishment of the timber and treatment of the metalwork.

After this, the restored pump will be reassembled in the summer.

Stephanie Wilkins, chair of Friends of Melingriffith Water Pump, said they were excited about the project starting.

The group hopes to hold an event at the site.

“The structure and site is of importance to local people and those with special engineering and historical interests,” she said.

“As a group we will be working hard to make this project an ongoing success and urge people to get involved in safeguarding this unique structure for future generations.”

The Glamorgan canal once ran 25 miles from Merthyr to Cardiff’s docklands. The tinplate works is thought to have originated from the middle of the 18th Century.

Councillor Nigel Howells, executive member for sport leisure and culture, said: “This pump is not only a landmark for the area but an important symbol and reminder of this region’s industrial past.”

Heritage minister Alun Ffred Jones, who has responsibility for Cadw, said: “I am pleased that this collaboration with the City and Council of Cardiff will be giving people the opportunity to see the pump as it was and to provide information about its purpose and role in the tin plate works and the area as a whole.”