真空泵英文文献

1、vacuum pump overview vacuum pump is an enormous quantity of products, yield great wide, the output is not high, but it is really a directly affect the vacuum equipment performance quality indispensable based products. the vacuum pump market in accordance with the needs of users and happen dynamics.

2、market growth from the main driving force of the rapid development of the semiconductor industry and dry pump and molecular pump application field of widening. at present, the vacuum pump market sales of about $20 billion in annual rate around 7%. our production of vacuum pump manufacturer of vacuum

3、 pump, all in many sales are about 1.5 billion yuan, is only american kinney company annual sales of vacuum pump. based on the analysis of global vacuum pump market we can see that all types of vacuum pump market and application fields are constantly changing and developing. our country vacuum pump

4、manufacturing has a long history and strong foundation, homebred vacuum pump has been applied in many different fields and validated, some pumps also exported abroad, get foreign customers approval and good reputation, it should be said that china vacuum pump manufacturing in domestic and internatio

5、nal market still has the huge development space. 1. water-ring vacuum pump although water-ring vacuum pump belongs to rough vacuum pumps, but in our country of petroleum, chemical industry, electric power, textile, paper, pharmaceutical products still has a large market. in a foreign country, water

6、ring vacuum pumps sales total market of 14%, after dry pump, so seimems and nash, such companies in china kinney investment and construction or establish sales network, and constantly expand in our market share. because water ring pumps are mostly casting, processing requirements are not high, of la

7、bor-intensive products, so the domestic water ring pump on price competitive advantage, the key is to design improvement, narrow the volume, lose weight, increase efficiency, reduce the energy consumption. 2.rotary piston pump rotary piston pump is a kind of oil seal type vacuum pump. because rotary

8、 piston pump more durable, reliable, various domestic and international vacuum furnace, coaters and drying equipment, dipping with rotary piston pump is a former level rotary piston pump pump, but casting heavy, processing larger workload, so the foreign vacuum factory all seek partnership in china.

9、 in order to make the homemade rotary piston pump can enter the international market, we must further reduce pump vibration noise, prevent leakage and improve injection and rotary piston pump long-term operation reliability. 3. straight league rotary vane pumps along with the vacuum technology in ea

10、ch application domain expands unceasingly, straight league rotary vane pumps the growing demand. because of this pump number, processing and assembling workload is very big, price is very low, so some foreign vacuum manufacturers in china build plants. domestic small and medium-sized straight league

11、 rotary vane pumps in technology have pass, price and far than foreign pump cheap, so domestic pump still has a competitive advantage, the key is to solve the shaft seal leakage and rotary vane materials and vacuum pump oil performance quality problems, ensure that straight league pump in the high s

12、peed, high temperature performance is stable and reliable operation, and meanwhile, further improve the domestic straight league rotary vane pumps besides water vapor ability. 4. rom bates vacuum pump from abroad rom bates vacuum pump production situation, the foreign several big companies, such as

13、the leybold, alcatell balzers, edwards and ulvac, they each rom sales of bates pump of world rom bates pump sales proportion of more than 5%, which are not only 20%, total 5 home bates pump output robben is not big, but foreign rom bates pump prices than domestic pump is much higher. at present, the

14、 domestic and foreign almost all the large or small high vacuum and vacuum system, in order to shorten the suction time and improve production efficiency is equipped with rom bates pump, so homebred rom bates pump must be in occupied domestic market based on managed to enter the international market

15、, so we must further reduce domestic rom bates pump vibration noise, thoroughly solve the shaft seal leakage problem and improve the quality and improve the appearance of the pump inside the finish and cleanness of pump. additional, even considering some countries and regions of power frequency for

16、60hz, more make sure paul bates pump in improving speed under the condition of the long-term operational reliability. at present,the domestic air type in-line atmospheric rom bates pump progress soon, technology has matured on.because of this pump in the vent below containing gas cooler, one part is

17、 cooled the air through pipeline pump chamber to cool the rotor returns, thus make refrigerator heat to be balanced, so this kind of pump can be in-line atmosphere. in order to meet different requirements of limiting vacuum pump series, this can be used, general appending a air type in-line atmosphe

18、ric rom bates pumps, reach limit vacuum pump high level than before an order of magnitude. this pump because in pump chamber without working medium, is actually belong to dry pump. at present, this kind of air type in-line atmospheric rom bates pump and crew have in petroleum, chemical, plastic, pes

19、ticide, turbine rotor dynamic balance, aerospace space simulation device got long-term operation of the test, so it should be popularized and applied in china. 5.molecular pump molecular pump in the field of many foreign semiconductor process occasion is used instead of cryogenic pumps, especially s

20、puttering, etching and lcvd devices are adopted complex molecular pump and traction pump as the main pump. because of molecular pump to water vapor is only the pumping speed with diameter cryogenic pumps pumping speed in the quarter, so molecular pump exhaust time than cryogenic pumps long. in order

21、 to improve the pumping speed, foreign in molecular pump inlet side to install a-130150 low-temperature cooling-plate, called low-temperature molecular pump, vapor by low-temperature board, other gas is captured by molecular pumped away. this kind of low molecular pump in the vacuum coating on the d

22、evice application, it raised production efficiency and improves the coating quality. with chinas semiconductor industry, film industry and scientific research undertaking develop rapidly, molecular pump should be focusing on the development of our country vacuum pump manufacturing. first, molecular

23、pump to establish a complete series of childhood, and research and development of different complex molecular pump, traction pump and low temperature molecular pump, in order to meet different situation the need. 6. dry type mechanical vacuum pump foreign dry type mechanical vacuum pump market is gr

24、owing, its main drive from the semiconductor industry, chemical industry, film industry rapid development. in japan, semiconductor industry is full already use dry vacuum pump oil seal type jixiebeng, euramerican instead of semiconductor industry more than 45% replaced with dry vacuum pump oil seal

25、type jixiebeng, greatly improving the product performance and quality. in order to meet different applications and requirements of different working conditions, abroad have multistage rom bates vacuum pump, multi-stage claw type vacuum pump, screw vacuum pump and the vacuum pump, reciprocating type

26、vortex piston vacuum pump and turbine oil free pump etc. extreme pressure from 10pa 10-2pa, pumping speed from 20m3 / h 500m3 / h. according to statistics, at present domestic dry pump application is insufficient still 1%, domestic semiconductor industry with dry pump all imported from abroad, its p

27、rice is very expensive. therefore, our country should vigorously research and development dry pump, and let the dry vacuum pump become chinas industrial new economic growth point. vacuum pump technology progress trend: technology is the impulsion of the demand of the market. because the vacuum techn

28、ology, expansion and the rapid growth of high-tech, the domestic market to the vacuum pump technology level put forward higher request. the vacuum pump production enterprises must through technical innovation and the adjustment of product mix two ways to preserve the original market, and thus contin

29、ue to expand the market share. (1) enhance the vacuum pump reliability, reduce the vibration and noise, pay attention to the vacuum pump comprehensive level over the past several years, vacuum pump manufacturer pays attention to main performance indexes, such as, extreme pressure, pumping speed etc,

30、 and ignore the vacuum pump comprehensive performance. and now, product reliability, performance stability and the environment pollution caused by gradually become users buy products factors. for rotary vane pumps, pump, rotary piston pump luo bates concerned will mature such reliability design conc

31、ept applied to vacuum pump design, the reliability design, reliability experiments to dramatically improve aspectsthe free time, vacuum pump reliability, stability and life, ensure vacuum pump can under various working conditions long-term reliable operation. by adopting new technology, new material

32、, new technology, new structure to reduce the vibration and noise, solve pump oil spraying, oil leakage problem, but also a clean user friendly working environment. (2) vacuum pump to individuation, diversification development enterprise face is ever changing market, and our vacuum pump products but

33、 waking greatly. product and market of cohesion, make we dont lose many opportunities. the vacuum pump next development should be facing personalized and diversification. so-called personalized and diversification is aims at the different needs of different customers, design for a users specific occ

34、asion products, make the product is in this occasion to application, characteristic play just pour advantage. (3) formation of molecular pump and dry pump scale production according to the forecast by 2010, china will become the worlds second-biggest semiconductor ic market, total demand is about 10

35、00 yikuai, reaching $100 billion more than the total amount, need to build more than 30 large production line to meet demand. 30 production lines needed dry vacuum pump around 15000 units, it is current our country vacuum pump annual output of 1/10 or so. domestic currently vacuum pro-duction equipm

36、ent still with traditional vacuum pump is given priority to, mainly for sliding vane rotary pump, rotary piston vacuum pump, luo bates vacuum pump, steam flow pump, water ring vacuum pumps, etc, and all used in traditional industries, chinas production of vacuum pump used for electronic information

37、industry to less than 1%, with japan, european and american countries than gap is tremendous. our production of dry vacuum pump is just the start stage, in the whole nation 200 manufacturer of vacuum pump enterprise, can produce the dry vacuum pump of enterprise insufficient 10 home, annual producti

38、on capacity of less than 1000 sets. no form batch production. current domestic production of dry pump most used in laboratory and chemical, pharmaceutical and other fields, used in semiconductor industry is very few. domestic rapid development of electronic information industry no effective stimulat

39、ing domestic dry vacuum pump development, but become international vacuum industrialized countries to the expansion of the land. at present domestic built semiconductor integrated circuit production line, almost all of the dry vacuum pump (including other vacuum equipment) are all imported mainly fr

40、om britain, japan, germany, america, etc. domestic production of dry vacuum pump from entering the field was very difficult, making the dry vacuum pump this future vacuum pro-duction equipment leading products in our country through a very difficult situation. the cause of this situation was the mai

41、n cause of dry vacuum pump in our startting evening, just a start namely facing abroad has developed mature products to enter china market, large domestic product besides low price outside, in processing manufacturing, technical level, quality situation and so on various aspects does not contain adv

42、antage, foreign countries products after years of contest, has been basically divided up the domestic market, and establish feet, domestic production because of the dry vacuum pump has lost market incentive, did not have the development power, progress is slow. industry experts agree that the dry va

43、cuum pump is vacuum pro-duction equipment the direction of development, but also vacuum pro-duction means cutting-edge technology, our countrys vacuum pump industry must make a difference in this field, the first in food, chemical, pharmaceutical, etc. after these markets to cultivate and exercise,

44、and then into the semiconductor industry. to make the industry of keeping pace with times. at present domestic molecular pump shall improve its series and develop many varieties, such as low molecular pump, complex molecules pump etc, gradually expand the market. (4) to introduce advanced foreign te

45、chnology, make domestic independent brands introduce the foreign advanced technology, improve our scientific and technological content of products in other industries have successful experience. in the development of vacuum pro-duction equipment in the high-end product introduction of foreign techno

46、logy, and good digestion absorption, will change our country product otaku pinliang speed low-skilled, quality and technology level cannot meet the demand of market of the status quo. but we the introduction of foreign technology, should pay special attention to two points: one is the emphasis on di

47、gest absorb, and based on this, cultivate enterprise of independent intellectual property rights and innovation ability. 2 it is not repeat import blindly, aiming at the international on contemporary latest technology, avoid introducing generation, backward generation. the introduction of foreign te

48、chnology is not an end, but a means, through introducing technology ultimately make domestic independent brand! (5) grasp product structure adjustment to develop to meet market demand of the products the traditional vacuum equipment we produce decades in the nationwide form became the stability of t

49、he product distribution pattern. but with the high speed development of economy, the information technology, aerospace, nano science and other high-tech bow i guide of todays science and technology development trend. and these high-tech vacuum pro-duction equipments development is inseparable from the basic equipment. at present domestic situation is still in producti