外文翻譯---螺桿式空氣壓縮機

1、<p><b>　　中英文翻譯</b></p><p>　　The screw air compressor</p><p>　　Screw air compressor is the injection of single stage double screw compressor, divided into single screw air compre

2、ssor and screw air compressor, efficient use of belt drive, drive the host rotation of compressed air, through the oil for cooling the compressed air in the host, the host of air and oil discharge of the mixed gas after

3、coarse, fine two channel separation, the compressed oil separated out in the air, finally get the clean compressed air. Cooler for cooling the compressed air and oil</p><p>　　Twin screw compressor is a doubl

4、e volume type rotary compressor, which is the main (Yang) side (Yin) with two rotor, composed of meshing pair, vice principal of rotor profile of external components of the element volume closed with the inner wall of th

5、e casing, shortage of twin screw is 40 cubic meters and above machine type to add gear, increase power consumption and prone to head lock; while the worm compressor is a uniaxial volume type rotary compressor, the meshin

6、g pair is composed of a worm</p><p>　　The main performance parameters of screw type air compressor power, volume flow rate, pressure, exit temperature, discharge pressure and speed etc.. And in the design of

7、 screw air compressor, rotor of a pair of mutually meshing is a very important parameter. Because the performance of the compressor is closely related with the. The Yin and Yang of screw compressor rotor can be regarded

8、as a pair of mutually meshed helical gear, therefore, the Yin and Yang of screw compressor rotor profile, but a</p><p>　　Screw compressor is constantly engaged on the rotor output compressed gas, therefore t

9、he spindle speed variation, volume flow rate, the exhaust pressure of the compressor will be affected, so the spindle speed is a major factor affecting the performance of screw compressor. When the exhaust pressure incre

10、ases, compressor power consumption also increases, power increases, the decrease of economic benefit, so it has significant effect on energy consumption and exhaust pressure of the compressor. A</p><p>　　Scr

11、ew compressor body is divided into two kinds, one kind is the belt transmission type, another kind is direct drive. Compressor belt transmission type which is suitable for 22KW power, is composed of 2 manufacturing accor

12、ding to the speed ratio of the belt pulley power via the belt transmission; direct drive type is the 1 coupling electric source and host together, worm compressor is directly driven by the worm rotation, while the double

13、 screw compressor is required add a gear in order to impr</p><p>　　The working process of Twin Screw Compressors: motor through a coupling, gear or belt driven by two main rotor, rotor meshing with each othe

14、r, the main rotor is directly driven by the auxiliary rotor to rotate together, inhaled air in relatively under the action of negative pressure, the peak, and the tooth groove under the agreement, the gas is transported

15、compression, when the rotor meshing surface to and the casing exhaust port, the compressed gas discharge.</p><p>　　The working process of screw compressor: motor with coupling or belt to power the worm shaft

16、, driven by the worm gear worm star relative move in grooves, sealing element volume change, gas, transportation compression, when the design pressure, exhaust from the host shell triangle on the left and right symmetric

17、al outlet to the oil and gas separator in the.</p><p>　　The host for the housing of screw compressor is provided with a spray hole, depending on the pressure difference, in the process of oil spray to the co

18、mpression chamber to cool the gas, compressed, the sealing parts gap, and to vibration, noise and lubricating effect</p><p>　　Inhalation of dust in the air was blocking filter, in order to avoid premature we

19、ar and oil separator of compressor to be blocked, usually run 1000 hours or after a year, to replace the filter, dust, replace the time interval to shorten. Filter repair must stop, reduce stop time, recommended for the

20、last new or cleaned standby filter.</p><p>　　Clean filter steps are as follows:</p><p>　　The 1 to the two end surface of a plane turns tap filter, with most heavy and dry sand.</p><p&

21、gt;　　2 with less than 0.28MPa of dry air and air blowing along the opposite direction, the nozzle and the folded paper less distance of 25 mm, and along the length direction, bottom blowing.</p><p>　　Grease

22、3 element, should be dissolved with no foam detergent in warm water wash, the warm water immersion for 15 minutes at least element, and use clean water hose with wash, do not use heating method to accelerate drying, a fi

23、lter can be washed 5 times, and then discarded reusable.</p><p>　　The 4 filter is put in a check, such as thinning, pinhole or damaged should be abandoned.</p><p><b>　　Cooler</b><

24、/p><p>　　The cooler tube, outer surface should pay special attention to the decision to keep clean, otherwise it will reduce the cooling effect, should be working conditions, regular cleaning.</p><p&

25、gt;　　Gas tank / oil and gas separator</p><p>　　Gas tank / oil separator according to the pressure vessel manufacturing standards and acceptance, not arbitrarily modify.</p><p>　　Safety valve<

26、/p><p>　　Installed in the tank / oil and gas separator safety valve inspection at least once a year, adjust the safety valve should have professional and responsible, at least every three months to marathon a l

27、ever again, so that the valve opening and closing time, a safety valve to work properly.</p><p>　　Test steps are as follows:</p><p>　　1 close the gas supply valve;</p><p>　　2 connec

28、ted to water;</p><p>　　The 3 starting unit;</p><p>　　4 observe the working pressure, slowly clockwise pressure regulating bolt, when the pressure reaches the set value, the safety valve does not

29、 open or up to the specified value before the open, it must be adjusted.</p><p>　　The adjustment procedure is as follows:</p><p>　　1 remove the cap and seal;</p><p>　　The 2 valve op

30、ening soon, loosen locknut and a positioning bolt half ring, valve open too late to loosen</p><p>　　The nut about a circle and release the positioning bolts half circle.</p><p>　　3 repeat detect

31、ion step, the safety valve set pressure value, still can not open, again adjustment.</p><p>　　Motor overload relay</p><p>　　The relay normally open contact, must be closed, when the current exce

32、eds the rated value, cut off the motor power supply.</p><p>　　The maintenance of screw compressor relative to the piston compressor is to lower the probability of a failure of many, but if use improper maint

33、enance, the advantages of screw compressor is difficult to play. Many users began to use piston compressor screw air compressor, due to the maintenance of screw compressor does not understand, leading to frequent failure

34、, causing the conflict between users and enterprises. So before using screw compressor to his use and maintenance instructions carefull</p><p>　　Installation place, on the machine's air ventilation, pres

35、sure station power supply cable and air switch specifications, water pressure and flow, exhaust pipe sizes have guidance. The instructions also principle and structure of the machine are described in detail, there are ce

36、rtain basic knowledge of mechanical and electrical personnel through carefully reading, can make correct judgement and treatment for common problems. There is a consumable part of screw compressor to the regular replacem

37、en</p><p>　　Transmission gear and belt drive</p><p>　　In the transmission system of the air compressor, generally can be divided into direct transmission and belt drive, long-term since, two kin

38、ds of transmission way merits has been one of the focus of the debate. Direct drive screw air compressor refers to the spindle motor through a coupling and a gear to drive the rotor, direct drive which in fact is not the

39、 real meaning of. Direct drive on real significance is directly connected to motor and rotor (coaxial) and the speed. This is obviously a li</p><p>　　Another way of drive for belt drive, the drive through th

40、e belt wheels of different diameters is allowed to change the rotating speed of the rotor.</p><p>　　Belt drive system discussed below is a representative shall meet the following conditions of the automation

41、 system of the latest technology:</p><p>　　Belt 1, each operating state of tension reached the optimal value</p><p>　　2, by avoiding the tension, greatly prolong the working life of the belt, wh

42、ile reducing the motor and rotor bearing load;</p><p>　　3, always make sure that the correct belt wheel is connected;</p><p>　　4, replacement of the belt is quite easy and fast, and do not need

43、to adjust the original setting;</p><p>　　5, the belt drive system safe and trouble-free operation.</p><p>　　The comparison of transmission</p><p>　　1 efficiency.</p><p>

44、;　　Gear transmission efficiency can reach 98%~99% excellent, belt drive design excellent under normal working conditions and efficiency reached 99%. The difference does not depend on the choice of drive mode, and dependi

45、ng on the manufacturer's design and manufacturing level.</p><p>　　2 no-load power consumption</p><p>　　For direct gear driving mode, no-load pressure generally maintained at more than 2.5bar

46、, some even as high as 4bar, to ensure that the gear lubrication.</p><p>　　The belt drive mode, theory of no-load pressure can be zero, because the rotor into the oil to lubricate the rotor and bearing. Gene

47、ral for the sake of safety, the pressure maintained at about 0.5bar.</p><p>　　Taking gear compressor a 160kW for example, 8000 hours per year, of which 15% (1200 hours) time for no-load, the machine every ye

48、ar than the same power air compressor belt drive more consumption of electricity (28800kwh no-load assuming two machine pressure is 2bar, the difference of the energy consumption of about 15%.), over the long term, this

49、will be no small cost.</p><p>　　3 oil loss</p><p>　　The actual users experienced all know, oil loss under the condition of the first victims will be the gear box. Belt drive system is not the ex

50、istence of such security problems.</p><p>　　4 according to user requirements design working pressure</p><p>　　The working pressure and manufacturers usually user requirements of the standard mod

51、el of the pressure is not completely consistent. For example, the user's requirements in accordance with the pressure of 10bar, after processing equipment, pipe length and different requirements of sealing, the press

52、ure of air compressor may be 11 or 11.5bar. In this case, the general will install a rated pressure of 13bar e air compressor and in the field to the outlet pressure set for the required pressure. The</p><p>

53、;　　The belt transmission design manufacturers on behalf of the modern technology simply change the belt pulley diameter and the pressure of work designed to be completely consistent with the requirements of users, so tha

54、t users with a motor with a power which can get more air volume. For the wheel transmission, is not so easy.</p><p>　　The installed 5 air compressor pressure change</p><p>　　Sometimes because of

55、 technological conditions for the production of the user changes, the design pressure of air compressor of the original purchase may be too high or too low, will change, but for the compressor gear transmission, this wor

56、k is very difficult and expensive, and for the belt drive type air compressor is be an easy job to do, only changing the belt pulley you can.</p><p>　　6 installing the new bearing</p><p>　　When

57、the rotor bearing needs to be replaced, the compressor gear transmission, gear box and gear box bearing at the same time the cost of overhaul, let users to accept. The belt drive air compressor, simply does not exist in

58、this topic.</p><p>　　7 replacement seal</p><p>　　Any screw compressors are used in an annular seal, to a certain life need to be replaced. For gear drive type air compressor, must first separate

59、 motor, coupling, access to the shaft seal, making this work is time-consuming, thus increasing maintenance costs. The belt drive compressors, only need to remove the belt wheel, easier.</p><p>　　8 motor rot

60、or bearing damage or</p><p>　　For gear drive air compressor, when the motor or the rotor bearing damage, often hurt is important parts of the direct and indirect double damage. The belt drive air compressor

61、does not exist.</p><p>　　9 the structure of noise</p><p>　　For gear drive air compressor, the motor is connected with the rigidity of the rotor, rotor vibration compression chamber can be transm

62、itted to the gearbox and motor bearing, which not only increases the wear of motor bearing, while increasing the noise of the machines.</p><p><b>　　螺桿式空氣壓縮機</b></p><p>　　螺桿式空氣壓縮機是噴油單

63、級雙螺桿壓縮機，分為單螺桿式空氣壓縮機及雙螺桿式空氣壓縮機，采用高效帶輪傳動，帶動主機轉(zhuǎn)動進行空氣壓縮，通過噴油對主機內(nèi)的壓縮空氣進行冷卻，主機排出的空氣和油混合氣體經(jīng)過粗、精兩道分離，將壓縮空氣中的油分離出來，最后得到潔凈的壓縮空氣。冷卻器用于冷卻壓縮空氣和油。具有優(yōu)良的可靠性能，振動小、噪聲低、操作方便、易損件少、運行效率高是其最大的優(yōu)點。螺桿壓縮機是容積式壓縮機中的一種，空氣的壓縮是靠裝置于機殼內(nèi)互相平行嚙合的陰陽轉(zhuǎn)子的齒槽之容積

64、變化而達到。轉(zhuǎn)子副在與它精密配合的機殼內(nèi)轉(zhuǎn)動使轉(zhuǎn)子齒槽之間的氣體不斷地產(chǎn)生周期性的容積變化而沿著轉(zhuǎn)子軸線，由吸入側(cè)推向排出側(cè),完成吸入、壓縮、排氣三個工作過程。</p><p>　　雙螺桿壓縮機是一種雙軸容積式回轉(zhuǎn)型壓縮機，其主要是主（陽）副（陰）兩根轉(zhuǎn)子配合，組成嚙合副，主副轉(zhuǎn)子齒形外部同機殼內(nèi)壁構(gòu)成封閉的基元容積,雙螺桿的不足就是40立方及其以上機型需要添加增速齒輪，增加電耗且容易出現(xiàn)機頭抱死；而蝸桿壓縮機是

65、一種單軸容積式回轉(zhuǎn)型壓縮機，其嚙合副是由一根蝸桿和兩個對稱平面布置的星輪所組成，由其蝸桿螺槽和星輪齒面及機殼內(nèi)壁形成封閉的基元容積，但不足是星輪片材質(zhì)還有待改善。</p><p>　　螺桿式空氣壓縮機的主要性能參數(shù)即功率、容積流量、吸氣壓力、出口溫度、排出壓力以及轉(zhuǎn)速等。而在螺桿式空氣壓縮機的設(shè)計中，一對相互嚙合的轉(zhuǎn)子是一個非常重要的參數(shù)。因為其與壓縮機的性能緊密相關(guān)。螺桿壓縮機的陰陽轉(zhuǎn)子可以看作是一對相互嚙合的

66、斜齒輪，因此，螺桿壓縮機的陰、陽轉(zhuǎn)子型線也要滿足嚙合定律。轉(zhuǎn)子的齒面與轉(zhuǎn)子軸線垂直面的截交線稱為轉(zhuǎn)子型線。螺桿壓縮機的轉(zhuǎn)子型線分為對稱型線和不對稱型線，以及單邊型線和雙邊型線，齒頂中心線兩邊的型線完全相同時，稱為對稱型線。反之，齒頂中心線兩邊的型線不同時，稱為不對稱型線。只在轉(zhuǎn)子節(jié)圓的內(nèi)部或者外部一邊具有型線，稱為單邊型線。節(jié)圓的內(nèi)、外均有型線，稱為雙邊型線。一般來講，新型線的開發(fā)設(shè)計直接影響了螺桿式空氣壓縮機的性能，而螺桿式空氣壓縮機

67、性能好壞也取決于型線的設(shè)計。</p><p>　　螺桿壓縮機是依靠轉(zhuǎn)子的不斷嚙合輸出壓縮氣體的，因此主軸轉(zhuǎn)速的變化，對壓縮機的容積流量、排氣壓力都會產(chǎn)生影響，因此主軸轉(zhuǎn)速是影響螺桿壓縮機性能的一大因素。當(dāng)排氣壓力增大，壓縮機功耗也增加，比功率增大，則經(jīng)濟效益下降，所以排氣壓力對壓縮機的能耗有非常顯著的影響。同時，一些試驗結(jié)果表明外界的環(huán)境溫度也會對螺桿壓縮機的性能產(chǎn)生影響。中國在不同季節(jié)與不同區(qū)域的氣溫相差較大，

68、環(huán)境溫度不同則壓縮機的吸氣溫度也不同，這一參數(shù)將直接影響了螺桿壓縮機的性能。因此，對于以上影響螺桿壓縮機性能的因素進行分析，將對螺桿壓縮機的使用產(chǎn)生非常大的幫助。</p><p>　　螺桿壓縮機的機體均分為兩種，一種為皮帶傳動式，另一種為直接傳動式。其中皮帶傳動式較適用于22KW左右功率的壓縮機，是由2個按速度比例制造的皮帶輪將動力經(jīng)由皮帶傳動；直接傳動式是1個連軸器將電動源與主機結(jié)合在一起，蝸桿式壓縮機全部是直

69、接帶動蝸桿旋轉(zhuǎn)，而雙螺桿壓縮機則須再增加一級增速齒輪以提高主轉(zhuǎn)子的轉(zhuǎn)速。</p><p>　　雙螺桿壓縮機的工作過程：電動機經(jīng)聯(lián)軸器、增速齒輪或皮帶帶動主轉(zhuǎn)子，由于兩轉(zhuǎn)子互相嚙合，主轉(zhuǎn)子即直接帶動副轉(zhuǎn)子一同旋轉(zhuǎn)，在相對負壓作用下，空氣吸入，在齒峰與齒溝吻合作用下，氣體被輸送壓縮，當(dāng)轉(zhuǎn)子嚙合面轉(zhuǎn)到與機殼排氣口相通時，被壓縮氣體開始排出。</p><p>　　蝸桿壓縮機的工作過程：電動機以聯(lián)軸

70、器或皮帶將動力傳到蝸桿軸上，由蝸桿帶動星輪齒在蝸桿槽內(nèi)相對移動，封閉基元容積發(fā)生變動，氣體、輸送壓縮，當(dāng)達到設(shè)計壓力值，由主機殼體上左右兩側(cè)對稱的三角形排氣口排至油氣分離器內(nèi)。</p><p>　　螺桿壓縮機的主機殼體上均開有噴油孔，憑借自身的壓力差，在壓縮過程中將油噴到壓縮腔，以冷卻氣體，密封各部件間隙，并起到吸振、消聲及潤滑的作用</p><p>　　吸入空氣中灰塵被阻隔濾清器中，以避

71、免壓縮機被過早磨損和油分離器被阻塞，通常運轉(zhuǎn)1000個小時或一年后，要更換濾芯，多灰塵區(qū)，則更換時間間隔要縮短。濾清器維修時必須停機，減少停車時間，建議換上一個新或已清潔過備用濾芯。 </p><p>　　清潔濾芯步驟如下： </p><p>　　1.對著一個平面輪流輕敲濾芯兩端面，以絕大部分重而干灰沙。 </p><p>　　2.用小于0.28MPa干燥空氣沿與吸

72、入空氣相反方向吹，噴嘴與折疊紙少相距25毫米，并沿其長度方向上、下吹。 </p><p>　　3.濾芯上有油脂，則應(yīng)溶有無泡沫洗滌劑溫水中洗，此溫水中至少將濾芯浸漬15分鐘，并用軟管中干凈水拎洗，不要用加熱方法使其加速干燥，一只濾芯可洗5次，然后丟棄不可再用。 </p><p>　　4.濾芯內(nèi)放一燈進行檢查，如發(fā)現(xiàn)變薄，針孔或破損之處應(yīng)廢棄不用。 </p><p>

73、<b>　　冷卻器 </b></p><p>　　冷卻器管子內(nèi)，外表面要特別留意決對保持清潔，否則將降低冷卻效果，應(yīng)工作條件，定期清潔。 </p><p>　　儲氣罐/油氣分離器 </p><p>　　儲氣罐/油氣分離器按壓力容器標準制造和驗收，不任意修改。 </p><p><b>　　安全閥 </b&

74、gt;</p><p>　　裝于儲氣罐/油氣分離器上安全閥每年至少檢查一次，調(diào)整安全閥要有專業(yè)人負責(zé)進行，每三個月至少要拉松一下杠桿一次，使閥開啟和關(guān)閉一次，一確保安全閥能正常工作。 </p><p><b>　　檢驗步驟如下： </b></p><p><b>　　1.關(guān)閉供氣閥； </b></p><

75、;p><b>　　2.接通水源； </b></p><p><b>　　3.啟動機組； </b></p><p>　　4.觀察工作壓力，慢慢順時針方向旋轉(zhuǎn)壓力調(diào)節(jié)器調(diào)節(jié)螺栓，當(dāng)壓力達到規(guī)定數(shù)值時，安全閥還未打開或達至規(guī)定值前已打開，則必須調(diào)整之。 </p><p><b>　　調(diào)整步驟如下： </b&

76、gt;</p><p>　　1.卸下帽蓋和鉛封； </p><p>　　2.閥開啟過早，則松開鎖緊螺母并旋緊定位螺栓半圈，閥開過遲則松開鎖 </p><p>　　緊螺母約一圈并松開定位螺栓半圈。 </p><p>　　3.重復(fù)檢測步驟，安全閥規(guī)定壓力值時，仍不能打開，則再次調(diào)整之。 </p><p><b>

77、　　電機過載繼電器 </b></p><p>　　繼電器正常情況下，觸點應(yīng)是閉合，當(dāng)電流超過額定值時打開，切斷電機電源。</p><p>　　編輯本段保養(yǎng)螺桿壓縮機相對于活塞壓縮機是出現(xiàn)故障的概率要低的多，但是如果使用維護不當(dāng)，螺桿壓縮機的優(yōu)點就很難得到發(fā)揮。許多活塞壓縮機的用戶開始改用螺桿空壓機，由于對螺桿壓縮機的使用維護不了解，導(dǎo)致頻繁發(fā)生故障，從而引起用戶和企業(yè)之間發(fā)生矛

78、盾。所以在使用螺桿壓縮機之前要對他的使用和維護說明認真閱讀。</p><p>　　對機器的安裝場所、空壓站的通風(fēng)量、供電電纜和空氣開關(guān)的規(guī)格、供水壓力和流量、排氣管路尺寸都有指導(dǎo)性建議。使用說明書還會對機器的原理與結(jié)構(gòu)有詳細描述，有一定機電基礎(chǔ)知識的人員通過仔細閱讀，完全可以對常見問題做出正確判斷和處理。還有就是螺桿壓縮機的耗材部分要定期更換主要有潤滑油、油過濾器、進氣過濾器、油分濾芯等等值得注意的是在環(huán)境不同的

79、地方更換的頻率也是有所區(qū)別的，所以要對螺桿壓縮機做好每天的使用和檢查記錄。</p><p>　　傳動方式齒輪與皮帶傳動</p><p>　　在空壓機的傳動系統(tǒng)中，一般可分為直接傳動和皮帶傳動，長期以來，兩種傳動方式孰優(yōu)孰劣一直是業(yè)界爭論的焦點之一。螺桿式空壓機的直接傳動指的是馬達主軸經(jīng)由連軸器和齒輪箱變速來驅(qū)動轉(zhuǎn)子，這實際上并不是真正意義上的直接傳動。真正意義上的直接傳動指的是馬達與轉(zhuǎn)子直

80、接相連（同軸）且兩者速度一樣。這種情況顯然是極少的。因此那種認為直接傳動沒有能量損耗的觀點是不對的。</p><p>　　另一種傳動方式為皮帶傳動，這種傳動方式允許通過不同直徑的皮帶輪來改變轉(zhuǎn)子的轉(zhuǎn)速。</p><p>　　下面所討論的皮帶傳動系統(tǒng)是指滿足下列條件的代表最新科技的自動化系統(tǒng)：</p><p>　　1、每一運轉(zhuǎn)狀態(tài)之皮帶張力均達到優(yōu)化值</p&g

81、t;<p>　　2、通過避免過大的啟動張力，大大延長了皮帶之工作壽命，同時降低了馬達和轉(zhuǎn)子軸承的負荷；</p><p>　　3、始終確保正確的皮帶輪連接；</p><p>　　4、更換皮帶相當(dāng)容易和快捷，且不須對原有設(shè)定作調(diào)整；</p><p>　　5、整個皮帶驅(qū)動系統(tǒng)安全無故障運轉(zhuǎn)。</p><p><b>　　傳動

82、比較</b></p><p><b>　　1.效率</b></p><p>　　優(yōu)良的齒輪傳動效率可達98%~99%,優(yōu)良的皮帶傳動設(shè)計在正常的工作條件下亦可達到99%的效率。兩者的差異并不取決于傳動方式的選擇，而取決于制造商的設(shè)計與制造水平。</p><p><b>　　2.空載能耗</b></p>

83、;<p>　　對于齒輪直接傳動方式，空載壓力一般要維持在2.5bar以上，有的甚至高達4bar，以確保齒輪箱的潤滑。</p><p>　　對于皮帶傳動方式，理論上講空載壓力可以為零，因為轉(zhuǎn)子吸進的油足以潤滑轉(zhuǎn)子和軸承。一般為安全起見，壓力維持在0.5bar左右。</p><p>　　以一臺160kw的齒輪傳動空壓機為例，每年工作8000小時，其中15%（即1200小時）的時間

84、為空載，這臺機器每年將比皮帶傳動的同功率空壓機多消耗28800kwh的電費（假定兩臺機器的空載壓差為2bar，約15%的能耗差異），長期來講，這將是不小的花費。</p><p><b>　　3.失油</b></p><p>　　有經(jīng)驗的實際使用者都知道，失油狀況下最先受害的將是齒輪箱。皮帶傳動系統(tǒng)完全不存在這種安全問題。</p><p>　　4

85、.根據(jù)用戶要求設(shè)計工作壓力</p><p>　　通常用戶要求的工作壓力與制造商之標準機型的壓力并不完全一致。例如用戶使用要求壓力為10bar，依后處理設(shè)備狀況，配管長度及密封程度不同，要求空壓機的工作壓力可能為11或11.5bar。在這種情況下，一般會安裝一臺額定壓力為13bar峨空壓機并在現(xiàn)場將出口壓力設(shè)為所要求之工作壓力。此時排氣量會基本上保持不變，因為最終工作壓力雖然降低了，但轉(zhuǎn)子的速度并未增加。</

86、p><p>　　代表現(xiàn)代技術(shù)的皮帶傳動設(shè)計制造商只需簡單地改變皮帶輪的直徑并可將工作壓力設(shè)計得與用戶要求完全一致，這樣用戶用同功率的馬達卻可獲得更多的風(fēng)量。對于車輪傳動，則沒有這么方便。</p><p>　　5.已安裝空壓機一壓力改變</p><p>　　有時由于用戶生產(chǎn)工藝條件的改變，原來購買的空壓機之設(shè)計壓力可能太高或太低，希望能改變，但對于齒輪傳動的空壓機而言，這

87、項工作會顯得非常困難和昂貴，而對于皮帶傳動式空壓機而言卻是輕而易舉的事，只須更換皮帶輪即可。</p><p><b>　　6.安裝新軸承</b></p><p>　　當(dāng)轉(zhuǎn)子軸承需要更換時，對于齒輪傳動的空壓機，齒輪箱和齒輪箱主軸軸承需同時大修，其費用讓用戶難以接受。對于皮帶傳動空壓機，根本不存在這種為題。</p><p><b>　　

88、7.更換軸封</b></p><p>　　任何螺桿式空壓機均使用了一種環(huán)形軸封，到一定壽命均需更換。對于齒輪傳動式空壓機，必須先分離馬達、連軸器，才能接近軸封，使得這一工作耗時費力，從而增加維護費用。對于皮帶傳動式空壓機，只需先卸下皮帶輪即可，容易得多。</p><p>　　8.馬達或轉(zhuǎn)子軸承損壞</p><p>　　對于齒輪傳動空壓機，當(dāng)馬達或轉(zhuǎn)子軸承