ourpump.com blog

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.

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.