一、工作原理

　　1、 Working principle

　　羅茨風(fēng)機(jī)通過兩個或三個葉形轉(zhuǎn)子（通常為三葉或兩葉）在氣缸內(nèi)作反向等速旋轉(zhuǎn)實現(xiàn)氣體輸送。

　　The Roots blower achieves gas delivery by rotating two or three blade rotors (usually three or two blades) in opposite directions at a constant speed inside the cylinder.

　　氣體吸入：轉(zhuǎn)子旋轉(zhuǎn)時，與機(jī)殼、轉(zhuǎn)子與轉(zhuǎn)子之間形成封閉容積。當(dāng)容積擴(kuò)大至進(jìn)氣口時，氣體被吸入。

　　Gas inhalation: When the rotor rotates, it forms a closed volume with the casing and between rotors. When the volume expands to the inlet, gas is drawn in.

　　氣體壓縮與排出：隨著轉(zhuǎn)子繼續(xù)旋轉(zhuǎn)，封閉容積逐漸縮小，氣體被壓縮并推送至排氣口。由于轉(zhuǎn)子連續(xù)旋轉(zhuǎn)，氣體實現(xiàn)連續(xù)吸入和排出。恒流量特性：羅茨風(fēng)機(jī)無內(nèi)壓縮過程，氣體壓力依賴排氣側(cè)阻力形成，因此流量基本恒定，受壓力波動影響小。

　　Gas compression and discharge: As the rotor continues to rotate, the enclosed volume gradually decreases, and the gas is compressed and pushed to the exhaust port. Due to the continuous rotation of the rotor, gas is continuously sucked in and discharged. Constant flow characteristic: Roots blower has no internal compression process, and the gas pressure depends on the exhaust side resistance, so the flow rate is basically constant and less affected by pressure fluctuations.

　　二、結(jié)構(gòu)特點轉(zhuǎn)子設(shè)計：

　　2、 Structural Features: Rotor Design:

　　三葉轉(zhuǎn)子：氣體脈動性小，振動和噪聲較低，運行更平穩(wěn)。

　　Three bladed rotor: with low gas pulsation, low vibration and noise, and smoother operation.

　　二葉轉(zhuǎn)子：結(jié)構(gòu)簡單，適用于大風(fēng)量場景。

　　Two blade rotor: simple structure, suitable for high air volume scenarios.

　　間隙控制：轉(zhuǎn)子與機(jī)殼、轉(zhuǎn)子與轉(zhuǎn)子之間保留0.2-0.5mm的微小間隙，避免接觸摩擦，允許氣流含一定粉塵。

　　Gap control: Keep a small gap of 0.2-0.5mm between the rotor and the casing, and between rotors to avoid contact friction and allow the airflow to contain a certain amount of dust.

　　同步齒輪：通過同步齒輪帶動轉(zhuǎn)子反向旋轉(zhuǎn)，確保嚙合精度，防止碰撞。

　　Synchronous gear: The synchronous gear drives the rotor to rotate in the opposite direction, ensuring meshing accuracy and preventing collisions.

　　無油潤滑：轉(zhuǎn)子無接觸運轉(zhuǎn)，無需內(nèi)部潤滑，輸送氣體純凈無油污

　　Oil free lubrication: The rotor operates without contact and does not require internal lubrication. The gas transported is pure and free of oil stains

　　。三、性能優(yōu)勢流量穩(wěn)定：

　　3. Performance advantages and stable traffic:

　　在額定壓力范圍內(nèi)，流量基本恒定，受壓力波動影響小。

　　Within the rated pressure range, the flow rate remains relatively constant and is less affected by pressure fluctuations.

　　適應(yīng)性強(qiáng)：對進(jìn)氣中的灰塵、雜質(zhì)不敏感，能在惡劣工況下穩(wěn)定運行?？奢斔秃幸欢恳旱位蚬腆w顆粒的氣體（需特殊設(shè)計或前置過濾）。

　　Strong adaptability: insensitive to dust and impurities in the intake, able to operate stably under harsh working conditions. It can transport gases containing a certain amount of liquid droplets or solid particles (requiring special design or pre filtration).

　　對氣體成分變化不敏感，適用于惰性氣體、特殊氣體等（需選對材質(zhì)和密封）。

　　Not sensitive to changes in gas composition, suitable for inert gases, special gases, etc. (materials and seals need to be selected correctly).

　　維護(hù)簡便：日常維護(hù)主要是檢查潤滑（軸承、齒輪箱）、皮帶張緊度（如適用）、更換空氣濾清器等。維護(hù)周期較長，工作量不大。

　　Easy maintenance: Daily maintenance mainly includes checking lubrication (bearings, gearbox), belt tension (if applicable), replacing air filters, etc. The maintenance cycle is long and the workload is not large.

　　啟動方便：可帶壓啟動，對啟動扭矩要求不高。

　　Easy to start: It can be started with pressure and does not require high starting torque.

　　性價比高：在壓力范圍內(nèi)，羅茨風(fēng)機(jī)結(jié)構(gòu)簡單、價格低廉，相比單級高速離心鼓風(fēng)機(jī)或多級離心鼓風(fēng)機(jī)更具優(yōu)勢。安裝簡單，操作方便，維護(hù)成本低。

　　High cost-effectiveness: Within the pressure range, Roots blowers have a simple structure and low price, which is more advantageous than single-stage high-speed centrifugal blowers or multi-stage centrifugal blowers. Easy installation, convenient operation, and low maintenance cost.

　　四、典型應(yīng)用領(lǐng)域污水處理：

　　4、 Typical application areas for sewage treatment:

　　曝氣系統(tǒng)：為曝氣池注入氣體，促進(jìn)廢水中的生物降解和氧化過程?；炷?、攪拌：提高廢水處理效率。

　　Aeration system: Inject gas into the aeration tank to promote biodegradation and oxidation processes in wastewater. Coagulation and stirring: improve the efficiency of wastewater treatment.

　　氣力輸送：輸送粉狀、顆粒狀物料（如水泥、面粉、谷物、塑料粒子）。

　　Pneumatic conveying: Conveying powdered and granular materials (such as cement, flour, grains, plastic particles).

　　水產(chǎn)養(yǎng)殖：增氧：提高水體中的溶解氧含量，促進(jìn)水生生物生長。

　　Aquaculture: Oxygenation: Increasing the dissolved oxygen content in water and promoting the growth of aquatic organisms.

　　真空系統(tǒng)：作為真空泵使用（需連接真空罐或系統(tǒng)）。

　　Vacuum system: used as a vacuum pump (requires connection to a vacuum tank or system).

　　化工與石化：輸送工藝氣體、氣體攪拌、物料輸送。

　　Chemical and petrochemical industries: transportation of process gases, gas agitation, and material transportation.

　　電力行業(yè)：煙氣脫硫（FGD）氧化風(fēng)機(jī)。

　　Power industry: flue gas desulfurization (FGD) oxidation fan.

　　造紙行業(yè)：紙漿攪拌、氣墊干燥。

　　Paper industry: pulp mixing, air cushion drying.

　　食品與醫(yī)藥：發(fā)酵罐通風(fēng)、物料輸送（需食品級認(rèn)證）。

　　Food and Medicine: Fermentation tank ventilation, material transportation (requiring food grade certification).

　　其他領(lǐng)域：焚燒爐助燃風(fēng)、印刷機(jī)械、建材行業(yè)等。

　　Other fields: combustion air for incinerators, printing machinery, building materials industry, etc.

　　五、主要缺點噪音和振動較大：由于轉(zhuǎn)子周期性嚙合排氣以及氣體脈動，會產(chǎn)生較大的噪音和振動。通常需要配備消音器、隔音罩或安裝在獨立機(jī)房內(nèi)。

　　5、 The main disadvantages are high noise and vibration: due to the periodic meshing of the rotor exhaust and gas pulsation, significant noise and vibration will be generated. Usually, silencers, soundproof covers, or installations in separate machine rooms are required.

　　效率相對較低：由于是無內(nèi)壓縮的等容壓縮過程，以及存在間隙泄漏，其效率通常低于離心風(fēng)機(jī)（在高效區(qū)）和螺桿壓縮機(jī)。尤其在高壓差下運行時，能耗較高。

　　Relatively low efficiency: Due to the constant volume compression process without internal compression and the presence of gap leakage, its efficiency is usually lower than that of centrifugal fans (in the high-efficiency zone) and screw compressors. Especially when operating under high pressure differentials, energy consumption is relatively high.

　　溫升較高：壓縮過程中產(chǎn)生的熱量（主要是克服阻力和泄漏渦流損失）會使氣體溫度顯著升高。有時需要配置冷卻器（風(fēng)冷或水冷）。

　　High temperature rise: The heat generated during the compression process (mainly to overcome resistance and leakage vortex losses) will significantly increase the gas temperature. Sometimes it is necessary to configure a cooler (air-cooled or water-cooled).

　　對過載敏感：出口管路堵塞或壓力異常升高會導(dǎo)致電機(jī)過載，必須安裝安全閥（泄壓閥）保護(hù)風(fēng)機(jī)和電機(jī)。

　　Sensitive to overload: Blockage or abnormal pressure rise in the outlet pipeline can cause motor overload, and safety valves (pressure relief valves) must be installed to protect the fan and motor.

　　制造精度要求高：為保證小間隙運行而不發(fā)生碰撞，轉(zhuǎn)子型線加工精度和同步齒輪的精度要求非常高。

　　High manufacturing accuracy requirements: In order to ensure small clearance operation without collision, the precision requirements for rotor profile machining and synchronous gear are very high.

　　單級壓力有限：單級羅茨風(fēng)機(jī)的壓比（出口絕對壓力/入口絕對壓力）通常不超過1.8，更高壓力需要多級串聯(lián)或選用其他類型壓縮機(jī)（如螺桿機(jī)）。

　　Single stage limited pressure: The pressure ratio (outlet absolute pressure/inlet absolute pressure) of a single-stage Roots blower usually does not exceed 1.8, and higher pressures require multi-stage series connection or the use of other types of compressors (such as screw machines).

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