Permanent Magnet Frequency Conversion Roots Vacuum Pumps
Discover the next generation of industrial vacuum technology with Ever-Power’s Permanent Magnet Variable Frequency Roots Vacuum Pumps (ZJ/ZJP Series). Featuring zero-leakage design, water-cooled motors, and Level 1 energy efficiency. Perfect for semiconductor and coating applications.
Revolutionizing industrial Roots vacuum pumps with Zero Leakage, High Efficiency, and Intelligent Control.
Product Overview: The Future of Vacuum Technology
In the rapidly evolving landscape of industrial manufacturing, the demand for cleaner, more efficient, and smarter vacuum solutions is higher than ever. Traditional Roots pumps, while reliable, often face challenges regarding dynamic seal leakage, energy consumption, and bulky installation footprints. At Ever-Power, we have addressed these challenges head-on with our latest innovation: the ZJ and ZJP Series Roots Vacuum Pumps equipped with Permanent Magnet Variable Frequency Water-Cooled Vacuum Motors.
This Roots pump vacuum system represents a significant leap forward. By integrating advanced magnet motor technology, we have eliminated the need for traditional dynamic seals. The motor and the vacuum pump are installed to form a completely enclosed space. This design breakthrough means we have thoroughly eliminated the hidden danger of oil leakage, achieving a true "Zero Leakage" state. This feature makes it one of the best Roots vacuum pumps for coating systems and semiconductor applications where purity is paramount.
Five Core Advantages of the New ZJ/ZJP Series
1. Zero Leakage Design
By canceling the dynamic seal, we have removed the weakest link in traditional pump design. The motor and pump body form a hermetically sealed unit. This is critical for energy efficient Roots vacuum pump solutions where maintaining vacuum integrity reduces the load on the system. It ensures that no oil contaminants enter the environment and no air leaks into the process chamber.
2. Intelligent Variable Frequency Control
The integrated permanent magnet motor allows for precise variable frequency regulation. Unlike fixed-speed asynchronous motors, our system can adjust its speed based on the actual workload of the factory. This capability for precise control allows the pump to ramp up for rapid evacuation and slow down for holding, optimizing performance for every stage of the Roots vacuum pump working principle.
3. Superior Energy Efficiency
Efficiency is at the heart of the ZJ/ZJP series. The permanent magnet motor is significantly more efficient than standard induction motors. The system operates close to the national Level 1 energy efficiency standard, drastically reducing operational costs over the pump's lifecycle.
4. Compact and Space-Saving
Real estate on the factory floor is valuable. Through the integration of the water-cooled motor directly with the pump body, we have significantly reduced the overall dimensions. This compact design saves installation space, making it easier to integrate into complex machinery or tight utility rooms.
5. Stable Variable Frequency Start
Requires a frequency converter (inverter) for operation. This allows for a soft start, reducing the mechanical stress on gears and bearings during startup. The result is a more stable, reliable, and longer-lasting unit compared to direct-on-line start pumps.
Performance Specifications
Below are the technical specifications for our ZJ (Standard) and ZJP (Bypass Valve) series. Selecting the right model is crucial for building an effective multi-stage Roots vacuum pump system.
| Model | Ultimate Pressure (Pa) | Pumping Speed (L/S) | Max Allowed Pressure Diff (hPa) | Inlet Diam (mm) | Outlet Diam (mm) | Motor Power (KW) | Recommended Backing Pump | Cooling Water (L/min) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| ZJ-600A | 5×10⁻² | 600 | 58 | 200 | 200 | 7.5 | 2H-70B 2H-150 | 8 | 500 |
| ZJ-1200A | 5×10⁻² | 1200 | 53 | 250 | 200 | 11 | 2H-150 | 10 | 650 |
| ZJP-600A | 5×10⁻² | 600 | 32 | 200 | 200 | 7.5 | 2H-70B 2H-150 | 8 | 573 |
| ZJP-1200A | 5×10⁻² | 1200 | 44 | 250 | 200 | 11 | 2H-150 | 10 | 740 |
Working Principle and Industrial Applications
Understanding the Roots Mechanism
The Roots vacuum pump working principle is based on two figure-eight shaped rotors rotating in opposite directions within the pump housing. These rotors are synchronized by a set of gears, ensuring they never touch each other or the housing wall. This non-contact design allows for high rotational speeds, which generates the high pumping speeds characteristic of high-speed Roots vacuum pumps.
The ZJ/ZJP series enhances this traditional mechanism with a permanent magnet motor. Unlike standard motors, the permanent magnet rotor is directly integrated, eliminating the need for a shaft seal that connects to the outside atmosphere. This is the key to our "Zero Leakage" claim. The pump acts as a booster, compressing gas from a low pressure to a higher pressure, where it is then exhausted by a backing pump.
Target Applications
Due to its clean, oil-free, and high-efficiency nature, the ZJ/ZJP series is the ideal Roots vacuum pump for semiconductor industry. Semiconductor manufacturing involves handling hazardous and expensive gases where leakage is not an option.
- Vacuum Coating (PVD/CVD): Essential for creating uniform thin films on glass, optics, and tools.
- Lithium Battery Manufacturing: Ensures a moisture-free environment for electrolyte filling and electrode drying.
- Vacuum Metallurgy: Used in vacuum induction melting and sintering where high pumping speeds are required at low pressures.
- Chemical Processing: As a dry Roots vacuum pump (in the chamber), it can handle solvent recovery without contaminating the process with oil.
Installation Dimensions & Guide
Proper installation is vital for performance. Use the following tables as your Roots vacuum pump installation guide. Please note the compact design of these new models compared to traditional units.
ZJ-600A & ZJ-1200A Dimensions (mm)
| Model | L0 | L1 | L2 | L3 | L4 | H1 | H2 | H3 | W1 | W2 | W3 | 4-φC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ZJ-600A | 1099 | 399 | 292.5 | 585 | 25 | 540 | 50 | 175 | 460 | 560 | 560 | 4-φ24 |
| ZJ-1200A | 1345 | 509 | 315 | 630 | 25 | 570 | 50 | 200 | 500 | 600 | 560 |
| Model | D1 | D2 | D3 | d1 | d2 | d3 | d1' | d2' | d3' | n1-MA | n2-MB | n3-MC | Cooling In/Out |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ZJ-600A | 285 | 260 | 200 | 285 | 260 | 200 | 225 | 195 | 150 | 12-M10 | 12-M10 | 8-M10 | G1/2" |
| ZJ-1200A | 335 | 310 | 250 | 285 | 260 | 200 | 285 | 260 | 200 | 12-M10 | 12-M10 | 12-M10 |
ZJP-600A & ZJP-1200A Dimensions (mm)
| Model | L0 | L1 | L2 | L3 | L4 | H1 | H2 | H3 | W1 | W2 | W3 | 4-φC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ZJP-600A | 1099 | 399 | 277.5 | 760 | 27.5 | 673 | 70 | 235 | 480 | 590 | 375 | 4-φ24 |
| ZJP-1200A | 1345 | 509 | 316 | 948 | 26 | 675 | 65 | 250 | 520 | 650 | 425 |
| Model | D1 | D2 | D3 | d1 | d2 | d3 | n1-MA | n2-MB | Cooling In/Out |
|---|---|---|---|---|---|---|---|---|---|
| ZJP-600A | 285 | 250 | 200 | 285 | 250 | 200 | 8-M10 | 8-M10 | G1/2" |
| ZJP-1200A | 335 | 310 | 250 | 285 | 260 | 200 | 12-M10 | 12-M10 |
Quality Assurance and Testing
Every ZJ/ZJP unit undergoes rigorous testing before leaving our factory. We utilize advanced detection equipment to verify ultimate pressure, noise levels, and vibration stability. Our quality control ensures that you receive a reliable Roots vacuum pump backing pump system that is ready for immediate installation.
How to Select Your Roots Vacuum Pump
Choosing between the ZJ (Standard) and ZJP (Bypass Valve) series depends on your process:
- ZJ Series: Ideal for steady-state operations where the system is pumped down slowly or the backing pump capacity is large enough to prevent pressure differential overload.
- ZJP Series: Features an overflow valve. This automatically opens if the pressure difference exceeds the limit, protecting the motor. It is a Roots booster vacuum pump designed for systems that might experience sudden pressure spikes or require faster pump-down from higher pressures.
If you are unsure, consult our Roots vacuum pump troubleshooting guide or contact our engineering team for a custom assessment.
Why Choose Ever-Power?
As a leading Roots vacuum pump manufacturer, Ever-Power is dedicated to innovation. Our new permanent magnet series is a testament to our commitment to providing energy efficient Roots vacuum pump solutions. We offer comprehensive Roots vacuum pump spare parts and global support.
"We upgraded our coating line with Ever-Power's ZJP-1200A pumps. The space saving was immediate, but the real benefit was the zero-leakage performance which significantly improved our yield rates. The variable frequency control allowed us to fine-tune our vacuum levels like never before." — Senior Process Engineer, Semiconductor Manufacturing Corp.
Frequently Asked Questions (FAQ)
1. Does this pump require a backing pump?
Yes, the ZJ/ZJP series are booster pumps and cannot exhaust directly to the atmosphere. They must be used in series with a backing pump (such as a rotary vane, screw, or liquid ring pump).
2. Do I need a separate frequency converter?
Yes, since these pumps utilize permanent magnet synchronous motors, they require a frequency converter (VFD) to operate. This also provides the benefit of soft starting and speed regulation.
3. How does the water cooling system work?
The motor is encased in a water jacket. Cooling water flows through the jacket to dissipate heat generated by the motor and the compression process. This ensures stable operation even under heavy loads and is more effective than air cooling for high-performance motors.
4. Can this pump handle corrosive gases?
Standard models are cast iron. However, for the semiconductor or chemical industry, we can provide special coatings (like Nickel or PFA) on the flow path components to resist corrosion.
5. What maintenance does the ZJ/ZJP series require?
Thanks to the elimination of the dynamic seal, maintenance is significantly reduced compared to traditional pumps. Routine checks include monitoring gearbox oil levels, cooling water flow, and listening for abnormal noises. Refer to our Roots vacuum pump maintenance tips for a detailed schedule.
Additional information
| edited | by hyw |
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Product Quick Detail:
- Standard and non-standard available
- With high quality and competitive price
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- Packing as per customer’s demand.
We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.
Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.
Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port
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