答：常見(jiàn)的羅茨風(fēng)機(jī)的冷卻方式有以下幾種：

　　1、風(fēng)冷

　　羅茨風(fēng)機(jī)通過(guò)氣體的輸送和壓縮產(chǎn)生熱量，這些熱量需要從轉(zhuǎn)子傳遞到殼體進(jìn)行散熱。但是，在低壓下，由于氣體的熱傳導(dǎo)和對(duì)流性能差，轉(zhuǎn)子吸收的熱量難以散發(fā)，轉(zhuǎn)子的溫度總是高于殼體的溫度。

　　轉(zhuǎn)子的熱膨脹會(huì)導(dǎo)致轉(zhuǎn)子與轉(zhuǎn)子之間、轉(zhuǎn)子與泵殼之間的間隙減小，尤其是壓差高時(shí)，可能會(huì)變得特別嚴(yán)重，導(dǎo)致轉(zhuǎn)子粘連，導(dǎo)致泵損壞。為了使羅茨泵在高差壓力下工作，擴(kuò)大使用范圍，提高泵的可靠性，需要設(shè)法排出轉(zhuǎn)子產(chǎn)生的熱量，即冷卻轉(zhuǎn)子。

　　為了了解空氣冷卻的本質(zhì)，讓我們來(lái)看看羅茨風(fēng)機(jī)排氣側(cè)的氣體流動(dòng)。在羅茨風(fēng)機(jī)中，吸入氣體被壓縮的過(guò)程是不連續(xù)的、突然的。吸入氣體隨著轉(zhuǎn)子的旋轉(zhuǎn)而被封閉在腔室內(nèi)，另外，隨著轉(zhuǎn)子的旋轉(zhuǎn)，腔室內(nèi)的氣體突然與排氣口連接。

　　2、轉(zhuǎn)子內(nèi)部冷卻

　　為了使羅茨風(fēng)機(jī)在更高的壓力差下工作，可以采用循環(huán)油冷卻轉(zhuǎn)子，在泵軸的兩端分別安裝油孔、油徑軸頭進(jìn)行打入，通過(guò)轉(zhuǎn)子內(nèi)壁從另一端排出冷卻方法。冷卻油除了冷卻轉(zhuǎn)子外，還潤(rùn)滑齒輪和軸承。該冷卻效果好，泵在運(yùn)行時(shí)轉(zhuǎn)子溫度低于殼體溫度，大泵多采用這種方式。

　　3、轉(zhuǎn)子油膜冷卻

　　該冷卻方法是在羅茨風(fēng)機(jī)的入口連接管路，用均勻滴下的冷卻油吸收轉(zhuǎn)子的熱量。機(jī)油經(jīng)過(guò)過(guò)濾器、冷卻器，通過(guò)密閉的油泵，通過(guò)管線輸送到泵的入口。向轉(zhuǎn)子滴油后，隨著轉(zhuǎn)子的旋轉(zhuǎn)，在轉(zhuǎn)子表面變平。

　　它不僅可以吸收轉(zhuǎn)子的熱量，還可以在兩個(gè)轉(zhuǎn)子表面形成油膜，防止氣體倒流，奪走附著在轉(zhuǎn)子表面的細(xì)小灰塵。在泵出口設(shè)置油槽，收集廢油，過(guò)濾，冷卻后回收利用。

　　4、水冷

　　羅茨風(fēng)機(jī)是指將中間級(jí)或二級(jí)泵吸入的空氣壓縮后，用與綜合吸收有相位差的組合消音器輸送。通過(guò)向泵內(nèi)注入微量的水，可以去除壓縮空氣產(chǎn)生的熱量。吸入管安裝在單級(jí)或雙級(jí)泵單元的進(jìn)氣端，與風(fēng)機(jī)的進(jìn)氣口連接。水由風(fēng)機(jī)在真空下吸入，真空度越大，吸入水量越高。簡(jiǎn)單調(diào)節(jié)閥應(yīng)確保良好的吸入量，吸入水溫度應(yīng)保持在20度左右.

　　我們?nèi)痂檄h(huán)保生產(chǎn)的羅茨風(fēng)機(jī)多數(shù)采用風(fēng)冷模式，沉水風(fēng)機(jī)與水冷風(fēng)機(jī)采用的是水冷模式生產(chǎn)!同時(shí)我們生產(chǎn)的羅茨泵也是一樣的哦！

How many cooling methods do you produce roots blower?

　　Answer: the common cooling methods of Roots blower are as follows:

　　1. Air cooling

　　Roots blower generates heat through gas transmission and compression, which needs to be transferred from rotor to shell for heat dissipation. However, at low pressure, due to the poor heat conduction and convection performance of the gas, the heat absorbed by the rotor is difficult to dissipate, and the temperature of the rotor is always higher than that of the shell.

　　The thermal expansion of the rotor will reduce the clearance between the rotor and the rotor and between the rotor and the pump shell. Especially when the differential pressure is high, it may become particularly serious, resulting in rotor adhesion and pump damage. In order to make roots pump work under high differential pressure, expand the scope of use and improve the reliability of the pump, it is necessary to try to discharge the heat generated by the rotor, that is, cool the rotor.

　　In order to understand the essence of air cooling, let's take a look at the gas flow on the exhaust side of Roots blower. In Roots blower, the compressed process of inhaled gas is discontinuous and sudden. The inhaled gas is enclosed in the chamber with the rotation of the rotor. In addition, with the rotation of the rotor, the gas in the chamber is suddenly connected with the exhaust port.

　　2. Rotor internal cooling

　　In order to make roots blower work under higher pressure difference, circulating oil can be used to cool the rotor, oil holes and oil diameter shaft heads can be installed at both ends of the pump shaft for driving, and the cooling method can be discharged from the other end through the inner wall of the rotor. In addition to cooling the rotor, the cooling oil also lubricates the gears and bearings. The cooling effect is good. When the pump is running, the rotor temperature is lower than the shell temperature. This method is mostly used for large pumps.

　　3. Rotor oil film cooling

　　The cooling method is to connect the pipeline at the inlet of Roots blower and absorb the heat of rotor with evenly dripping cooling oil. The oil is delivered to the inlet of the pump through the filter and cooler, through the closed oil pump and through the pipeline. After dropping oil to the rotor, it flattens on the rotor surface with the rotation of the rotor.

　　It can not only absorb the heat of the rotor, but also form an oil film on the surfaces of the two rotors to prevent gas backflow and take away the fine dust attached to the rotor surface. An oil tank is set at the pump outlet to collect waste oil, filter and recycle it after cooling.

　　4. Water cooling

　　Roots blower refers to compressing the air sucked in by the intermediate stage or secondary pump and conveying it with a combined silencer with phase difference from the comprehensive absorption. By injecting a small amount of water into the pump, the heat generated by compressed air can be removed. The suction pipe is installed at the air inlet end of the single-stage or two-stage pump unit and connected with the air inlet of the fan. Water is sucked by the fan under vacuum. The greater the vacuum, the higher the amount of water sucked. The simple regulating valve should ensure a good suction volume, and the suction water temperature should be maintained at about 20 degrees

　　Most roots fans produced by Ruizhe environmental protection adopt air-cooled mode, and submerged fans and water-cooled fans adopt water-cooled mode! At the same time, our roots pump is the same!