高性能ドライスクリュー真空ポンプ
Looking for a reliable Oil‑Free Dry Screw Vacuum Pump? Ever-Power offers high-performance, environmentally friendly industrial vacuum solutions. Ideal for chemical, pharmaceutical, and semiconductor applications. Explore our LGB series specifications and contact us for a quote today.
Engineering the future of vacuum technology with Oil‑Free Dry Screw Vacuum Pump solutions designed for efficiency, durability, and environmental compliance.
Product Overview: The Evolution of Vacuum Technology
In the demanding landscape of modern industrial processing, the shift from traditional oil-sealed systems to dry vacuum technology is not just a trend—it is a necessity. At Ever-Power, we specialize in manufacturing the Industrial Dry Screw Vacuum Pump, a pinnacle of engineering designed to meet the rigorous standards of the pharmaceutical, chemical, and semiconductor industries.
The LGB Series Dry Screw Vacuum Pump represents a significant leap forward. Unlike liquid ring pumps that face cavitation risks or oil-sealed pumps that struggle with emulsification and contamination, our dry screw technology offers a pure, unpolluted vacuum environment. By utilizing a pair of meshing screws that rotate synchronously at high speeds in opposite directions within the pump casing, we generate a powerful pumping action capable of handling tens or sixteen strokes efficiently. This mechanism ensures that the gases are moved through the pump without the need for internal lubricants in the compression chamber, resulting in a truly High Vacuum Dry Screw Pump システム。
Working Principle & Core Mechanism
The heart of the Ever-Power Dry Screw Vacuum Pump System lies in its precision rotors. The two screws undergo rigorous dynamic balancing and are supported by high-load bearings, installed securely within the pump casing. A precise, calculated clearance exists between the screws and between the screws and the casing.
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As shown in Figures 1 and 2, a pair of parallel spiral skins ① and ② are arranged inside the handle vacuum pump. ① is right-handed, and ② is left-handed. The two skins rotate synchronously in opposite directions within the pump via a pair of gears ③. There is no friction between the skins and between the skins and the pump body, maintaining a relative gap. Multiple sealed cavities ④ are formed between the two skins and the pump body ⑨, the number of which equals the number of spiral turns of the skins.
When the two skins rotate in the directions shown in the figures, the space of the sealed cavity connected to the intake port increases, and gas is drawn in and pushed to the seepage side. The sealed cavity space on the seepage side gradually decreases during rotation, and the gas is compressed to the seepage port. These sealed cavities "move" regularly from the seepage side of the pump to the seepage side, thus sending the gas out in a swirling flow. The continuous movement of the pump does not change the gas flow direction, thus allowing for the extraction of entrained particles and vapors within a certain range.
During prolonged operation, a suitable amount of coolant needs to be circulated into the jacket of the pump body and side covers to cool the pump and achieve temperature equilibrium.
Since the heat of compression is mainly generated on the spindle side, for sufficient cooling, under most operating conditions, a suitable amount of air mixed with a suitable gas can be introduced into the pump chamber through the compression port ⑩.
Because there is no friction between the rotors, no lubrication is required in the swept volume. This design allows the pump to:
- Handle Condensables: Effectively remove gases containing large amounts of condensable vapors (like water or solvents) without contaminating the pump oil.
- Process Particulates: The non-contact design allows for the passage of dust and small particulates that would typically seize a piston pump.
- Ensure Purity: Ideal as a replacement for oil-sealed mechanical pumps, liquid ring pumps, and reciprocating pumps where clean vacuum is paramount.
LGB Series Performance Specifications
Our comprehensive range of High Performance Dry Screw Vacuum Pumps ensures we have the right model for your specific flow rate and pressure requirements.
| 推奨モデル | LG-30 | LGB-30 | LGB-50 | LGB-70E | LGB-110E | LGB-150E | LGB-180E | LGB-230E | LGB-300 | LGB-360 | LGB-450 | LGB-500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ポンピング速度（L/s） | 30 | 30 | 50 | 70 | 110 | 150 | 180 | 230 | 300 | 360 | 450 | 500 |
| Pumping Speed (m³/h) | 108 | 108 | 180 | 250 | 400 | 540 | 650 | 828 | 1080 | 1300 | 1620 | 1800 |
| 到達圧力（Pa） | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 50 | 50 |
| Max Discharge Pressure (bar) | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 |
| モーター出力（kW） | 4 | 2.2 | 4 | 7.5 | 11 | 15 | 15 | 18.5 | 30 | 30 | 37 | 45 |
| Speed (rpm) | 2880 | 2880 | 2880 | 2900 | 2900 | 2940 | 2940 | 2950 | 2950 | 2950 | 2950 | 2950 |
| 入口直径（mm） | 50 | 50 | 50 | 65 | 65 | 100 | 100 | 100 | 150 | 150 | 150 | 150 |
| Outlet Diameter (mm) | 40 | 40 | 40 | 65 | 65 | 80 | 80 | 80 | 100 | 100 | 100 | 100 |
| Cooling Water Flow (L/min) | ≥10 | ≥10 | ≥10 | ≥12 | ≥12 | ≥13 | ≥13 | ≥13 | ≥20 | ≥20 | ≥22 | ≥22 |
| Noise dB(A) | ≤75 | ≤75 | ≤75 | ≤75 | ≤78 | ≤78 | ≤78 | ≤80 | ≤85 | ≤85 | ≤85 | ≤85 |
| 重量（kg） | 310 | 190 | 310 | 450 | 540 | 800 | 800 | 880 | 1250 | 1380 | 1400 | 1420 |
*Note 1: LGB30 discharge end grease usage 0.2L, inlet end usage 0.4L.
*Note 2: LGB150E, LGB180E adopt mechanical seal structure, motor power is 18.5kW.
主な機能と利点
Oil-Free Pump Chamber
Prevents contamination of the vacuum system and significantly improves equipment performance. This is crucial for applications requiring high purity, such as Dry Screw Vacuum Pump for Semiconductor Manufacturing.
Cost-Saving Maintenance
Solves problems such as oil emulsification, frequent working fluid changes, and frequent maintenance. Our Low Maintenance Dry Screw Vacuum Pump design lowers total cost of ownership.
Environmental Compliance
Dry operation produces no oil mist or fumes, benefiting the environment and conserving petroleum resources. It is fully capable of pumping large amounts of water vapor and dust.
耐食性
With available anti-corrosion coatings, our pumps are particularly suitable for product distillation, drying, and degassing. For extreme conditions, inquire about our Dry Screw Vacuum Pump for Chemical Processing.
設置寸法
Model Dimensions: LGB-70E ~ LGB-230E
| モデル | L0 | L1 | L2 | L3 | L4 | L5 | L6 | W0 | W1 | W2 |
|---|---|---|---|---|---|---|---|---|---|---|
| LGB-70E | 1472 | 790 | 690 | 50 | 5 | 340 | 162 | 920 | 570 | 130 |
| LGB-110E | 1672 | 910 | 810 | 50 | 5 | 460 | 162 | 920 | 570 | 130 |
| LGB-150E | 1749 | 1020 | 920 | 50 | 35 | 520 | 190 | 1050 | 700 | 130 |
| LGB-180E | 1749 | 1020 | 920 | 50 | 35 | 520 | 190 | 1050 | 700 | 130 |
| LGB-230E | 1820 | 1095 | 995 | 50 | 35 | 595 | 190 | 1050 | 700 | 130 |
Model Dimensions: LGB-300 ~ LGB-500
| モデル | L0 | L1 | L2 | L3 | L4 | L5 | L6 | W0 | W1 | W2 |
|---|---|---|---|---|---|---|---|---|---|---|
| LGB-300 | 2123 | 1552 | 1432 | 60 | 40 | 490 | 459 | 1240 | 800 | 130 |
| LGB-360 | 2283 | 1692 | 1572 | 60 | 55 | 635 | 471 | 1240 | 800 | 130 |
| LGB-450 | 2283 | 1692 | 1572 | 60 | 55 | 635 | 471 | 1240 | 800 | 130 |
| LGB-500 | 2395 | 1744 | 1624 | 60 | 55 | 635 | 471 | 1240 | 800 | 130 |
産業アプリケーション
The versatility of the Ever-Power Energy Efficient Dry Screw Vacuum Pump series makes it the preferred choice across various sectors. Our pumps are engineered to withstand the toughest operating conditions.
製薬業界
In pharmaceutical manufacturing, purity is non-negotiable. Our pumps are used for vacuum drying, freeze-drying, and reactor degassing. The oil-free nature prevents back-streaming contamination, ensuring compliance with GMP standards. The Dry Screw Vacuum Pump for Freeze Drying Applications ensures rapid sublimation without the risk of oil mist affecting the sensitive biological products.
化学処理
Chemical processes often involve corrosive or explosive gases. The LGB series, when equipped with specific anti-corrosion coatings, serves as an excellent Dry Screw Vacuum Pump for Chemical Processing. It handles solvent recovery and distillation effectively, processing vapors that would degrade the oil in traditional pumps instantly.
Semiconductor & Electronics
For etching, CVD (Chemical Vapor Deposition), and PVD processes, the Dry Screw Vacuum Pump for Semiconductor Manufacturing is essential. It provides the clean, stable vacuum required for microchip fabrication, handling aggressive process gases while maintaining long maintenance intervals.
Food Packaging & Processing
Used extensively in modified atmosphere packaging (MAP) and vacuum cooling, our Dry Screw Vacuum Pumps for Food Packaging ensure hygiene and extend shelf life by eliminating oxygen without introducing contaminants.
Selection Guide: How to Choose Your Dry Screw Pump
正しい選択をする Industrial Dry Screw Vacuum Pump requires analyzing several key factors:
- Determine the Required Vacuum Level: Are you looking for rough vacuum or medium/high vacuum? The LGB series provides excellent ultimate pressure (down to 5 Pa), but for higher vacuum needs, it can be paired with a Roots booster.
- Calculate Pumping Speed: Assess the volume of the chamber and the required time to reach the target pressure. Refer to the specifications table above (L/s or m³/h) to match your throughput requirements.
- Analyze Gas Composition:
- Is the gas corrosive? (Requires anti-corrosion coating).
- Does it contain solvents? (Dry screw pumps are ideal as they don't use oil).
- Is it flammable? (Requires explosion-proof motors and specific seals).
- System Integration: Consider if you need a standalone unit or a Dry Screw Vacuum Booster Pump System for enhanced performance.
Note: For corrosive operating conditions or complex system designs, please contact our engineering team for a customized solution.
What Our Customers Say
"Switching to the Ever-Power LGB-150E for our solvent recovery unit was a game-changer. We eliminated oil disposal costs entirely, and the pump handles the solvent vapors without any performance drop. Highly recommended for chemical plants."
- Process Engineer, Major Chemical Pharmaceutical Corp.
"We needed a clean vacuum source for our semiconductor research lab. The Ever-Power team helped us configure a dry screw system that is quiet, efficient, and reliable. The delivery was fast, and the documentation was excellent."
- Lab Director, Tech Materials Institute
よくある質問（FAQ）
1. What is the main advantage of a dry screw vacuum pump over an oil-sealed pump?
The primary advantage is the "oil-free" operation in the compression chamber. This eliminates oil back-streaming, prevents process gas contamination, and removes the cost and downtime associated with frequent oil changes and disposal.
2. Can the LGB series handle corrosive gases?
Yes, but it requires specific configuration. Standard models are robust, but for highly corrosive applications (like pumping acid vapors), we apply special anti-corrosion coatings (such as Nickel or PTFE) to the screws and chamber. Please specify your gas composition when inquiring.
3. Does the pump require cooling water?
Yes, the LGB series are generally water-cooled to manage the heat generated during the compression of gases. The required cooling water flow rates vary by model, ranging from 10 L/min for smaller units to over 22 L/min for the LGB-500. We also offer Air or Water‑Cooled Dry Screw Vacuum Pumps depending on custom configurations.
4. What is the maintenance interval for these pumps?
Dry screw pumps are known as Low Maintenance Dry Screw Vacuum Pumps. Since there is no oil in the pumping chamber to degrade, maintenance is primarily limited to checking the gear oil and changing bearings after long operational periods (typically every 2-3 years depending on usage intensity).
5. Can this pump be used for liquid or particle-heavy applications?
The screw design allows for the passage of small dust particles and can handle significant vapor loads. However, for applications with heavy slurry or large solids, inlet filtration is recommended to protect the screws from jamming. It is excellent for wet applications like drying.
Ready to Upgrade Your Vacuum System?
Contact Ever-Power today for technical consultation and competitive pricing on our Dry Screw Vacuum Pumps.
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1.ステンレス鋼：SS201、SS303、SS304、SS316、SS416、SS420
2.Steel:C45(K1045), C46(K1046),C20
3.黄銅：C36000( C26800)、C37700( HPb59)、C38500( HPb58)、C27200(CuZn37)、C28000(CuZn40)
4.ブロンズ：C51000、C52100、C54400など
5.鉄：1213、12L14、1215
6.アルミニウムAl6061、Al6063
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