外文翻譯---螺桿式空氣壓縮機(jī)

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(jī)</b></p><p>　　螺桿式空氣壓縮機(jī)是噴油單

63、級(jí)雙螺桿壓縮機(jī)，分為單螺桿式空氣壓縮機(jī)及雙螺桿式空氣壓縮機(jī)，采用高效帶輪傳動(dòng)，帶動(dòng)主機(jī)轉(zhuǎn)動(dòng)進(jìn)行空氣壓縮，通過噴油對(duì)主機(jī)內(nèi)的壓縮空氣進(jìn)行冷卻，主機(jī)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(dòng)小、噪聲低、操作方便、易損件少、運(yùn)行效率高是其最大的優(yōu)點(diǎn)。螺桿壓縮機(jī)是容積式壓縮機(jī)中的一種，空氣的壓縮是靠裝置于機(jī)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(dá)到。轉(zhuǎn)子副在與它精密配合的機(jī)殼內(nèi)轉(zhuǎn)動(dòng)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(gè)工作過程。</p><p>　　雙螺桿壓縮機(jī)是一種雙軸容積式回轉(zhuǎn)型壓縮機(jī)，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(jī)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(jī)型需要添加增速齒輪，增加電耗且容易出現(xiàn)機(jī)頭抱死；而蝸桿壓縮機(jī)是

65、一種單軸容積式回轉(zhuǎn)型壓縮機(jī)，其嚙合副是由一根蝸桿和兩個(gè)對(duì)稱平面布置的星輪所組成，由其蝸桿螺槽和星輪齒面及機(jī)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(jī)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(jī)的設(shè)計(jì)中，一對(duì)相互嚙合的轉(zhuǎn)子是一個(gè)非常重要的參數(shù)。因?yàn)槠渑c壓縮機(jī)的性能緊密相關(guān)。螺桿壓縮機(jī)的陰陽轉(zhuǎn)子可以看作是一對(duì)相互嚙合的

66、斜齒輪，因此，螺桿壓縮機(jī)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(jī)的轉(zhuǎn)子型線分為對(duì)稱型線和不對(duì)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(shí)，稱為對(duì)稱型線。反之，齒頂中心線兩邊的型線不同時(shí)，稱為不對(duì)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(jì)直接影響了螺桿式空氣壓縮機(jī)的性能，而螺桿式空氣壓縮機(jī)

67、性能好壞也取決于型線的設(shè)計(jì)。</p><p>　　螺桿壓縮機(jī)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(duì)壓縮機(jī)的容積流量、排氣壓力都會(huì)產(chǎn)生影響，因此主軸轉(zhuǎn)速是影響螺桿壓縮機(jī)性能的一大因素。當(dāng)排氣壓力增大，壓縮機(jī)功耗也增加，比功率增大，則經(jīng)濟(jì)效益下降，所以排氣壓力對(duì)壓縮機(jī)的能耗有非常顯著的影響。同時(shí)，一些試驗(yàn)結(jié)果表明外界的環(huán)境溫度也會(huì)對(duì)螺桿壓縮機(jī)的性能產(chǎn)生影響。中國(guó)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(jī)的吸氣溫度也不同，這一參數(shù)將直接影響了螺桿壓縮機(jī)的性能。因此，對(duì)于以上影響螺桿壓縮機(jī)性能的因素進(jìn)行分析，將對(duì)螺桿壓縮機(jī)的使用產(chǎn)生非常大的幫助。</p><p>　　螺桿壓縮機(jī)的機(jī)體均分為兩種，一種為皮帶傳動(dòng)式，另一種為直接傳動(dòng)式。其中皮帶傳動(dòng)式較適用于22KW左右功率的壓縮機(jī)，是由2個(gè)按速度比例制造的皮帶輪將動(dòng)力經(jīng)由皮帶傳動(dòng)；直接傳動(dòng)式是1個(gè)連軸器將電動(dòng)源與主機(jī)結(jié)合在一起，蝸桿式壓縮機(jī)全部是直

69、接帶動(dòng)蝸桿旋轉(zhuǎn)，而雙螺桿壓縮機(jī)則須再增加一級(jí)增速齒輪以提高主轉(zhuǎn)子的轉(zhuǎn)速。</p><p>　　雙螺桿壓縮機(jī)的工作過程：電動(dòng)機(jī)經(jīng)聯(lián)軸器、增速齒輪或皮帶帶動(dòng)主轉(zhuǎn)子，由于兩轉(zhuǎn)子互相嚙合，主轉(zhuǎn)子即直接帶動(dòng)副轉(zhuǎn)子一同旋轉(zhuǎn)，在相對(duì)負(fù)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(jī)殼排氣口相通時(shí)，被壓縮氣體開始排出。</p><p>　　蝸桿壓縮機(jī)的工作過程：電動(dòng)機(jī)以聯(lián)軸

70、器或皮帶將動(dòng)力傳到蝸桿軸上，由蝸桿帶動(dòng)星輪齒在蝸桿槽內(nèi)相對(duì)移動(dòng)，封閉基元容積發(fā)生變動(dòng)，氣體、輸送壓縮，當(dāng)達(dá)到設(shè)計(jì)壓力值，由主機(jī)殼體上左右兩側(cè)對(duì)稱的三角形排氣口排至油氣分離器內(nèi)。</p><p>　　螺桿壓縮機(jī)的主機(jī)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(rùn)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(jī)被過早磨損和油分離器被阻塞，通常運(yùn)轉(zhuǎn)1000個(gè)小時(shí)或一年后，要更換濾芯，多灰塵區(qū)，則更換時(shí)間間隔要縮短。濾清器維修時(shí)必須停機(jī)，減少停車時(shí)間，建議換上一個(gè)新或已清潔過備用濾芯。 </p><p>　　清潔濾芯步驟如下： </p><p>　　1.對(duì)著一個(gè)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(zhǎng)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(jìn)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(duì)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(chǔ)氣罐/油氣分離器 </p><p>　　儲(chǔ)氣罐/油氣分離器按壓力容器標(biāo)準(zhǔn)制造和驗(yàn)收，不任意修改。 </p><p><b>　　安全閥 </b&

74、gt;</p><p>　　裝于儲(chǔ)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(fù)責(zé)進(jìn)行，每三個(gè)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(yàn)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(dòng)機(jī)組； </b></p><p>　　4.觀察工作壓力，慢慢順時(shí)針方向旋轉(zhuǎn)壓力調(diào)節(jié)器調(diào)節(jié)螺栓，當(dāng)壓力達(dá)到規(guī)定數(shù)值時(shí)，安全閥還未打開或達(dá)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(cè)步驟，安全閥規(guī)定壓力值時(shí)，仍不能打開，則再次調(diào)整之。 </p><p><b>

77、　　電機(jī)過載繼電器 </b></p><p>　　繼電器正常情況下，觸點(diǎn)應(yīng)是閉合，當(dāng)電流超過額定值時(shí)打開，切斷電機(jī)電源。</p><p>　　編輯本段保養(yǎng)螺桿壓縮機(jī)相對(duì)于活塞壓縮機(jī)是出現(xiàn)故障的概率要低的多，但是如果使用維護(hù)不當(dāng)，螺桿壓縮機(jī)的優(yōu)點(diǎn)就很難得到發(fā)揮。許多活塞壓縮機(jī)的用戶開始改用螺桿空壓機(jī)，由于對(duì)螺桿壓縮機(jī)的使用維護(hù)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(jī)之前要對(duì)他的使用和維護(hù)說明認(rèn)真閱讀。</p><p>　　對(duì)機(jī)器的安裝場(chǎng)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(huì)對(duì)機(jī)器的原理與結(jié)構(gòu)有詳細(xì)描述，有一定機(jī)電基礎(chǔ)知識(shí)的人員通過仔細(xì)閱讀，完全可以對(duì)常見問題做出正確判斷和處理。還有就是螺桿壓縮機(jī)的耗材部分要定期更換主要有潤(rùn)滑油、油過濾器、進(jìn)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(duì)螺桿壓縮機(jī)做好每天的使用和檢查記錄。</p><p>　　傳動(dòng)方式齒輪與皮帶傳動(dòng)</p><p>　　在空壓機(jī)的傳動(dòng)系統(tǒng)中，一般可分為直接傳動(dòng)和皮帶傳動(dòng)，長(zhǎng)期以來，兩種傳動(dòng)方式孰優(yōu)孰劣一直是業(yè)界爭(zhēng)論的焦點(diǎn)之一。螺桿式空壓機(jī)的直接傳動(dòng)指的是馬達(dá)主軸經(jīng)由連軸器和齒輪箱變速來驅(qū)動(dòng)轉(zhuǎn)子，這實(shí)際上并不是真正意義上的直接傳動(dòng)。真正意義上的直接傳動(dòng)指的是馬達(dá)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(rèn)為直接傳動(dòng)沒有能量損耗的觀點(diǎn)是不對(duì)的。</p><p>　　另一種傳動(dòng)方式為皮帶傳動(dòng)，這種傳動(dòng)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(dòng)系統(tǒng)是指滿足下列條件的代表最新科技的自動(dòng)化系統(tǒng)：</p><p>　　1、每一運(yùn)轉(zhuǎn)狀態(tài)之皮帶張力均達(dá)到優(yōu)化值</p&g

81、t;<p>　　2、通過避免過大的啟動(dòng)張力，大大延長(zhǎng)了皮帶之工作壽命，同時(shí)降低了馬達(dá)和轉(zhuǎn)子軸承的負(fù)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(duì)原有設(shè)定作調(diào)整；</p><p>　　5、整個(gè)皮帶驅(qū)動(dòng)系統(tǒng)安全無故障運(yùn)轉(zhuǎn)。</p><p><b>　　傳動(dòng)

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

83、;<p>　　對(duì)于齒輪直接傳動(dòng)方式，空載壓力一般要維持在2.5bar以上，有的甚至高達(dá)4bar，以確保齒輪箱的潤(rùn)滑。</p><p>　　對(duì)于皮帶傳動(dòng)方式，理論上講空載壓力可以為零，因?yàn)檗D(zhuǎn)子吸進(jìn)的油足以潤(rùn)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(tái)160kw的齒輪傳動(dòng)空壓機(jī)為例，每年工作8000小時(shí)，其中15%（即1200小時(shí)）的時(shí)間

84、為空載，這臺(tái)機(jī)器每年將比皮帶傳動(dòng)的同功率空壓機(jī)多消耗28800kwh的電費(fèi)（假定兩臺(tái)機(jī)器的空載壓差為2bar，約15%的能耗差異），長(zhǎng)期來講，這將是不小的花費(fèi)。</p><p><b>　　3.失油</b></p><p>　　有經(jīng)驗(yàn)的實(shí)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(dòng)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(jì)工作壓力</p><p>　　通常用戶要求的工作壓力與制造商之標(biāo)準(zhǔn)機(jī)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(zhǎng)度及密封程度不同，要求空壓機(jī)的工作壓力可能為11或11.5bar。在這種情況下，一般會(huì)安裝一臺(tái)額定壓力為13bar峨空壓機(jī)并在現(xiàn)場(chǎng)將出口壓力設(shè)為所要求之工作壓力。此時(shí)排氣量會(huì)基本上保持不變，因?yàn)樽罱K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(dòng)設(shè)計(jì)制造商只需簡(jiǎn)單地改變皮帶輪的直徑并可將工作壓力設(shè)計(jì)得與用戶要求完全一致，這樣用戶用同功率的馬達(dá)卻可獲得更多的風(fēng)量。對(duì)于車輪傳動(dòng)，則沒有這么方便。</p><p>　　5.已安裝空壓機(jī)一壓力改變</p><p>　　有時(shí)由于用戶生產(chǎn)工藝條件的改變，原來購買的空壓機(jī)之設(shè)計(jì)壓力可能太高或太低，希望能改變，但對(duì)于齒輪傳動(dòng)的空壓機(jī)而言，這

87、項(xiàng)工作會(huì)顯得非常困難和昂貴，而對(duì)于皮帶傳動(dòng)式空壓機(jī)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(shí)，對(duì)于齒輪傳動(dòng)的空壓機(jī)，齒輪箱和齒輪箱主軸軸承需同時(shí)大修，其費(fèi)用讓用戶難以接受。對(duì)于皮帶傳動(dòng)空壓機(jī)，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(jī)均使用了一種環(huán)形軸封，到一定壽命均需更換。對(duì)于齒輪傳動(dòng)式空壓機(jī)，必須先分離馬達(dá)、連軸器，才能接近軸封，使得這一工作耗時(shí)費(fèi)力，從而增加維護(hù)費(fèi)用。對(duì)于皮帶傳動(dòng)式空壓機(jī)，只需先卸下皮帶輪即可，容易得多。</p><p>　　8.馬達(dá)或轉(zhuǎn)子軸承損壞</p><p>　　對(duì)于齒輪傳動(dòng)空壓機(jī)，當(dāng)馬達(dá)或轉(zhuǎn)子軸承