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英國GRIMM格林進口羅茨真空泵概述：
進口羅茨真空泵又稱機械增加泵，是一種容積式干式真空泵。該泵主要由一對同步高速旋轉(zhuǎn)的“8”字形轉(zhuǎn)子與兩個半圓形泵腔組成。其原理和羅茨鼓風機相似，可以作為增加泵使用，但它不能單獨地直接把氣體排到大氣中去，必須與前級泵串聯(lián)使用。在前級泵進氣口前面串聯(lián)上羅茨真空泵組成機組可提高前級泵的真空度，在有效工作范圍內(nèi)可大大提高抽氣速率。羅茨真空泵的極限壓力由前級泵決定，表中數(shù)據(jù)以螺桿真空泵為前級泵時的極限壓力。羅茨泵廣泛使用于真空澆鑄、真空熔煉、真空脫氣、真空鍍膜行業(yè)及化工醫(yī)藥行業(yè)的真空蒸餾、真空干燥等。泵對小量灰塵不敏感。
進口羅茨真空泵是在50Torr-micron高真空范圍具有較大抽速且成本較低的設備，它可以與各種真空泵結(jié)合組成真空機組。所有產(chǎn)品在出廠前都作動平衡和泄露測試。羅茨真空泵已經(jīng)在全球制造市場得到了廣泛的應用，如：化工、石化、塑料、半導體、木料混合物、食品處理、真空爐等。
英國GRIMM格林進口羅茨真空泵特點：
1、轉(zhuǎn)子與泵體、側(cè)蓋，轉(zhuǎn)子與轉(zhuǎn)子間均有間隙，互不接觸，因此：
A、泵腔各運動零件互想之間沒有摩擦，因此功率消耗小，運轉(zhuǎn)維護費用低，節(jié)能效果顯著。
B、泵腔內(nèi)各運動零件互相之間不需要油潤滑與密封，避免了油蒸汽返流對真空系統(tǒng)造成污染。
C、羅茨真空泵對被抽氣體中所含的少量粉塵不敏感。
2、轉(zhuǎn)子具有良好的幾何對稱性，運轉(zhuǎn)平穩(wěn)，振動小、噪音低，直聯(lián)傳動轉(zhuǎn)速高，體積小，重量輕。
3、羅茨真空泵的泵腔內(nèi)不發(fā)生象其它機械真空泵那樣具有內(nèi)部壓縮現(xiàn)象，因此其不需要排氣閥，所以當它的前級泵采用水環(huán)真空泵時，可以抽除含有大量水蒸汽的氣體。
4、起動快，能在短時間內(nèi)達到極限真空，抽氣效率較高。
5、泵在很寬的壓力范圍內(nèi)（1.3X103～1.3Pa），有較高的抽氣效率，能訊速排出突然放出的氣體，彌補了擴散泵和油封機械泵在1.3X103～1.3Pa時抽氣效率低的缺陷。
6、工作可靠，耐用：泵腔內(nèi)各摩擦副均有良好的潤滑，軸承與泵腔隔開，泵軸在軸封處裝有軸套，因此主軸不會磨損，軸套磨損后可以調(diào)頭繼續(xù)使用。采用立式結(jié)構(gòu)，皮帶張力與泵皮帶輪重力相抵消，軸承負荷較小，壽命較長。各主要件設計合理，大油箱結(jié)構(gòu)，利于油氣分離與冷卻，并具儲油量多，對油內(nèi)所含的雜物有較好的自分離較果，根據(jù)工況，還可以配置帶濾網(wǎng)堵塞旁路自動接通過濾器，以及油路油流通顯示裝置，因此泵可長時間的工作使用壽命較長，能在較惡劣的工況下工作。
7、體積小，重量輕：設計轉(zhuǎn)速適中，結(jié)構(gòu)緊湊合理，泵腔內(nèi)外部的利用率達，外形簡潔體積小。
英國GRIMM格林進口羅茨真空泵工作原理：
進口羅茨真空泵，在泵腔內(nèi)，有二個“8”字形的轉(zhuǎn)子相互垂直地安裝在一對平行軸上，由傳動比為1的一對齒輪帶動作彼此反向的同步旋轉(zhuǎn)運動。在轉(zhuǎn)子之間，轉(zhuǎn)子與泵殼內(nèi)壁之間，保持一定的間隙，可以實現(xiàn)高轉(zhuǎn)速運行。由于羅茨泵是一種無內(nèi)壓縮的真空泵，通常壓縮比很低，故需要前級泵。羅茨泵的極限真空處取決于泵本身結(jié)構(gòu)和制造精度外，還取決于前級泵的極限真空。為了提高泵的極限真空度，可將羅茨泵串聯(lián)使用。
羅茨泵的工作原理與羅茨鼓風機相似。由于轉(zhuǎn)子的不斷旋轉(zhuǎn)，被抽氣體從吸氣口吸入到轉(zhuǎn)子與泵殼之間的空間Vo內(nèi)，再經(jīng)排氣口排出。由于吸氣后Vo空間是全封閉狀態(tài)，所以，在泵腔內(nèi)氣體沒有壓縮和膨脹。但當轉(zhuǎn)子頂部轉(zhuǎn)過排氣口邊緣，Vo空間與排氣側(cè)想通時，由于排氣側(cè)氣體壓強較高，則有一部分氣體返沖到空間Vo中去，使氣體壓強突然增高。當轉(zhuǎn)子繼續(xù)轉(zhuǎn)動時，氣體排出泵外。
英國GRIMM格林進口羅茨真空泵技術參數(shù)：
抽 氣 量：30-1200L/s
極限真空：5×10-2Pa
轉(zhuǎn) 速：1450-2900r/min
功 率：0.75-11kw
口 徑：進口直徑：50-250mm
出口直徑：40-200mm
英國GRIMM格林進口羅茨真空泵適用范圍：
廣泛應用于真空冶金工業(yè)的真空脫氣真空冶煉，鋼水真空處理級熱處理等方面，也可以用于化工、食品、醫(yī)藥、電機制造等工業(yè)，特別需要指出，當它的前級泵采用雙級水環(huán)泵時，能抽除含有大量水蒸氣，因此，它又適用于蒸餾、蒸發(fā)、冷凍、干燥等生產(chǎn)過程......。
UK GRIMM Imported roots vacuum pump summary:
Imported roots vacuum pump, also known as mechanical increase pump, is a kind of displacement type dry vacuum pump. The pump is mainly composed of a pair of synchronous high-speed rotating 8 - type rotors and 2.5 round pump cavities. The principle is similar to that of Roots blowers. It can be used as an additional pump, but it can not be directly discharged into the atmosphere by itself. It must be used in tandem with the front pump. In front of the inlet of the front pump, the roots vacuum pump is connected in series to form a unit, which can improve the vacuum degree of the front stage pump, and greatly increase the pumping speed in the effective working range. The limit pressure of the roots vacuum pump is determined by the front pump. The data in the table is the lowest limit pressure of the screw vacuum pump. Roots pump is widely used in vacuum casting, vacuum melting, vacuum degassing, vacuum coating industry and chemical and pharmaceutical industry vacuum distillation, vacuum drying, etc.. The pump is insensitive to small amounts of dust.
Imported roots vacuum pump is a kind of equipment with high pumping speed and low cost in the high vacuum range of 50Torr-micron. It can be combined with various vacuum pumps to form a vacuum unit. All products are tested for dynamic balancing and leakage before leaving the factory. Roots vacuum pump has been widely used in the global manufacturing market, such as: chemical, petrochemical, plastic, semiconductor, wood mixture, food processing, vacuum furnace and so on.
UK GRIMM Imported roots vacuum pump characteristic:
1. The rotor and pump body, side cover, rotor and rotor gap between each other, and therefore do not contact each other:
A.There is no friction between the moving parts of the pump and the pump body of the A, so the power consumption is small, the operation and maintenance cost is low, and the energy saving effect is remarkable.
B.Each moving part in the pump cavity does not need oil lubrication and sealing, so the backflow of the oil vapor is avoided, and the vacuum system is polluted.
C.Roots vacuum pump is not sensitive to a small amount of dust contained in the gas to be pumped.
2. The rotor has good geometric symmetry, smooth operation, small vibration, low noise, straight drive speed, small size, light weight.
3. The pump cavity roots vacuum pump with internal compression phenomenon does not occur as the other mechanical vacuum pump, so it does not need the exhaust valve, so when it pump before the water ring vacuum pump, pumping can contain large amounts of water vapor gas.
4. Quick start, in a short time to reach the limit vacuum, pumping efficiency is higher.
5. Pump in a wide pressure range (1.3X103 ~ 1.3Pa), the pumping efficiency is high, can quickly exhaust gas suddenly released, to make up for the diffusion pump and seal mechanical pump in the defects of 1.3X103 ~ 1.3Pa low pumping efficiency.
6. Work reliable and durable: pump cavity friction pairs are good lubrication, bearing and pump separation, the pump shaft in the shaft seal is equipped with bushings, so the main shaft will not wear, sleeve wear can be turned back to continue to use. With vertical structure, belt tension and pump belt wheel gravity offset, bearing load smaller, longer life. The main parts of large tank structure, reasonable design, favorable for oil and gas separation and cooling, and the oil, the oil containing of debris in the well since the separation is more fruit, according to the working condition, but also can be configured with automatic filter bypass filter plug, and the oil circulation display device, so the pump can be long the service life is long, can work in harsh conditions.
7. Small size, light weight: design speed moderate, compact and reasonable structure, the pump cavity inside and outside the utilization rate reached the highest, concise appearance, small size.
UK GRIMM Imported roots vacuum pump working principle:
Imported roots vacuum pumps, in the pump cavity, there are two "8" shape of the rotor perpendicular to each other on a pair of parallel axis, by a transmission ratio of 1 of a pair of gear belt action synchronous reverse movement of each other. In the rotor, between the rotor and the pump shell wall to maintain a certain gap, you can achieve high speed operation. Since the roots pump is a vacuum pump without internal compression, the compression ratio is very low, so it needs the front pump. Roots pump limit vacuum depends on the pump itself structure and manufacturing accuracy, but also depends on the pre - pump limit vacuum. In order to increase the limit vacuum of the pump, the roots pump can be used in series.
The working principle of roots pump is similar to roots blower. As the rotor continues to rotate, the gas is pumped from the suction port to the space between the rotor and the pump housing Vo, and then discharged through the exhaust port. Since the Vo space is fully enclosed after inhalation, the gas in the pump cavity does not compress and expand. But when the top of the rotor turns off the edge of the exhaust and the Vo space and the exhaust side are figured out, the gas pressure at the exhaust side is higher, and a part of the gas flows back into space Vo, causing the gas pressure to suddenly increase. As the rotor continues to rotate, the gas is expelled from the pump.
UK GRIMM Imported roots vacuum pump technical parameter:
Gas output: 30-1200L/s
Limit vacuum: 5 * 10-2Pa
Speed: 1450-2900r/min
Power: 0.75-11kw
Caliber: Inlet diameter: 50-250mm
Outlet diameter: 40-200mm
UK GRIMM Imported roots vacuum pump scope of application:
Vacuum degassing vacuum smelting is widely used in vacuum metallurgy, vacuum treatment of molten steel level aspects of heat treatment, can also be used for chemical, food, medicine, motor manufacturing industry, in particular, when the pump before it adopts two-stage water ring pump, pumping with large amount of water vapor, therefore. It is also suitable for distillation, evaporation, freezing, drying and other production processes.......
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