China Best Sales Zj/Zjb Series Roots Vacuum Pump Zj-5000 vacuum pump engine

Product Description


Product Description

Roots pump is a kind of vacuum pump without internal compression. It is a vacuum pump that realizes air extraction by moving gas under the pushing action of synchronous and reverse rotation of a pair of “8” shaped rotors in the pump cavity. Generally, the pumping rate is large and the power of the motor is small, so the front pump is required to pre pump. After the front pump reaches the specified vacuum degree, start the roots vacuum pump to improve the pumping speed and vacuum degree. Its structure and working principle are similar to roots blower. During operation, its suction is connected with the evacuated container or the main pump of vacuum system. There is no contact between rotors of Roots vacuum pump and between rotors and pump casing.

Our Advantages

The running parts in the pump have no friction, no lubrication, and there is no oil in the pump cavity, so a clean vacuum can be obtained.

2 leaf involute cycloid profile, high-precision machining to ensure smooth and quiet operation.

the gas in the pump chamber flows vertically, which is conducive to the discharge of dust and condensate in the pumped gas.

. The high-strength rotor with complete symmetry and precise dynamic balance operates stably and reliably.

high precision gear, imported bearing, low vibration and noise.

the new omni-directional three-dimensional water-cooling jacket design can effectively cool the pump body and greatly prolong the service life of the pump.

the overflow surface can be plated with shackles, Hastelloy and PTFE, which can adapt to corrosive environments with different strengths.

it is convenient to form roots vacuum unit with liquid ring vacuum pump, rotary vane vacuum pump and dry vacuum pump.


Typical Use

——Oil and gas recovery.    ——Biological medicine ——Food Processing —— Single crystal furnace
——Vacuum forming ——Vacuum flame refining ——Electronic photovoltaic. ——Semiconductor synthesis

Product Parameters

Type Pumping Speed L/S Maximum allowable differential pressure (Pa) Pump Speed(RPM) Inlet Diameter(mm) Outlet Diameter(mm) Motor Power(kw)
ZJB-70 70 8000 2850 80 50 1.5
ZJB-150 150 6000 2850 100 80 3
ZJB-300 300 5000 2900 150 100 4
ZJB-600 600 4000 2900 200 150 5.5Z7.5
ZJ-1200 1200 3000 2900 250 200 11/15
ZJ-2500 2500 2600 2900 300 250 22
ZJ-3750 3750 2600 1450 350 350 30
ZJ-5000 5000 2600 1450 400 400 45



Detailed Photos

Vacuum pump is used in the field of chemical and pharmaceutical factory

General Manager Speech

Deeply cultivate the vacuum technology, and research,develop and manufacture the vacuum equipment to provide the best solution in the vacuum field and make the vacuum application easier.

Company Profile

ZheJiang Kaien Vacuum Technology Co., Ltd. is a high-tech enterprise integrating R & D, production and operation of vacuum equipment. The company has strong technical force, excellent equipment and considerate after-sales service. The product manufacturing process is managed in strict accordance with IS09001 quality system. It mainly produces and sells screw vacuum pump, roots pump, claw vacuum pump, runoff vacuum pump, scroll pump, water ring vacuum pump, vacuum unit and other vacuum systems.

 New plant plHangZhou

The company’s products have been for a number of food, medicine, refrigeration, drying plants and a number of transformer related equipment manufacturers for vacuum equipment. The products are widely used in vacuum drying and dehydration, kerosene vapor phase drying, vacuum impregnation, vacuum metallurgy, vacuum coating, vacuum evaporation, vacuum concentration, oil and gas recovery, etc.

High precision machining equipment

The company cooperates with colleges and universities to research and develop core technologies, and owns dozens of independent intellectual property patents. Adhering to the basic tenet of quality, reputation and service, the company takes leading-edge technology of vacuum pump as its own responsibility, and wholeheartedly serves customers of vacuum equipment application in various industries with rigorous working attitude and professional working style.

 Product quality wins consumer cooperationIn shipment ISO 9001


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After-sales Service: Lifetime Paid Service
Warranty: One Year
Oil or Not: Oil Free
Structure: Screw
Exhauster Method: Entrapment Vacuum Pump
Vacuum Degree: High Vacuum


roots vacuum pump

How Are Roots Vacuum Pumps Utilized in the Automotive Industry?

Roots vacuum pumps play a significant role in various applications within the automotive industry. Here’s a detailed explanation:

1. Brake System Vacuum Pumps:

– Vacuum Boosters: Roots vacuum pumps are commonly used as vacuum boosters in automotive brake systems. They assist in enhancing the braking performance by providing the necessary vacuum for power brake operation. When the driver applies the brake pedal, the vacuum booster uses the suction power generated by the Roots pump to amplify the force applied to the brake master cylinder, resulting in more effective braking.

– Electric Brake Vacuum Pumps: In modern electric or hybrid vehicles, where traditional engine-driven vacuum sources may not be available, electric brake vacuum pumps are utilized. These pumps, often based on the Roots principle, generate vacuum independently to power the brake booster and ensure reliable braking performance.

2. Emissions Control:

– Evaporative Emission Control: Roots vacuum pumps are employed in evaporative emission control systems to prevent the release of harmful vapors from the fuel system into the atmosphere. These pumps create a vacuum within the system, purging and storing fuel vapors in a canister for subsequent combustion or recycling.

– Positive Crankcase Ventilation (PCV): PCV systems, which are designed to reduce emissions and maintain the integrity of the engine, also utilize Roots vacuum pumps. These pumps draw crankcase gases and vapors, including oil mist, from the engine’s crankcase into the intake manifold for combustion, improving overall engine efficiency and reducing pollution.

3. Engine Testing and Development:

– Vacuum Leakage Testing: Roots vacuum pumps are utilized for vacuum leakage testing in engine manufacturing and development. By creating a vacuum in the intake manifold or other engine components, these pumps enable the detection of leaks and ensure the integrity of the engine’s air delivery system.

– Air Flow Calibration: During engine testing and calibration, Roots vacuum pumps are used to simulate various operating conditions by controlling the intake air flow. This allows engineers to fine-tune the engine’s performance, optimize fuel-air mixture ratios, and assess the engine’s efficiency and emissions characteristics.

4. HVAC Systems:

– Climate Control: Roots vacuum pumps are employed in automotive HVAC (Heating, Ventilation, and Air Conditioning) systems to facilitate the flow and distribution of air. These pumps help regulate the operation of HVAC components, such as air blend doors and vacuum actuators, ensuring proper air temperature and direction control inside the vehicle cabin.

5. Fuel System and Turbocharging:

– Fuel Transfer and Evacuation: In automotive fuel systems, Roots vacuum pumps are used for fuel transfer and evacuation. These pumps assist in priming the fuel system, removing air pockets, and ensuring the continuous flow of fuel to the engine, enhancing the overall fuel delivery performance.

– Turbocharger Control: Roots vacuum pumps are sometimes employed in turbocharged engines to control the actuation of variable geometry turbochargers (VGT). These pumps provide the necessary vacuum signals to actuate the VGT mechanism, optimizing turbocharger performance and enhancing engine efficiency.

6. Other Applications:

– Electric Vehicle Battery Systems: In electric vehicles, Roots vacuum pumps are utilized to create a vacuum in battery enclosures, helping to maintain the integrity and safety of the battery system by preventing the ingress of moisture, dust, or contaminants.

– Engine Air Induction: Some automotive engines utilize Roots-type superchargers or twin-screw superchargers, which are essentially positive displacement Roots vacuum pumps operating in reverse. These devices compress and force air into the engine’s intake manifold, resulting in increased engine power and performance.

In summary, Roots vacuum pumps find extensive utilization in the automotive industry. They play a crucial role in brake systems, emissions control, engine testing and development, HVAC systems, fuel systems, turbocharging, electric vehicle battery systems, and engine air induction. By contributing to braking performance, emissions reduction, engine calibration, HVAC functionality, fuel system efficiency, turbocharger control, battery system safety, and engine power enhancement, Roots vacuum pumps contribute significantly to the overall operation and performance of automotive systems and components.

roots vacuum pump

Are Roots Vacuum Pumps Used in Industrial Applications?

Yes, Roots vacuum pumps are widely used in various industrial applications. Here’s a detailed explanation of their application in industrial settings:

1. Chemical Processing: Roots vacuum pumps find extensive use in the chemical processing industry. They are employed for processes such as vacuum distillation, solvent recovery, drying, and degassing. Their high pumping speed and ability to handle corrosive gases make them suitable for handling various chemical vapors and byproducts.

2. Pharmaceuticals: In the pharmaceutical industry, Roots vacuum pumps are utilized for applications such as vacuum drying, tablet coating, freeze drying, and vacuum packaging. Their oil-free operation ensures a clean and contaminant-free vacuum environment, which is crucial for pharmaceutical manufacturing processes.

3. Food Processing: Roots vacuum pumps play a significant role in the food processing industry. They are employed for vacuum packaging, vacuum cooling, and vacuum drying of food products. The oil-free operation of Roots vacuum pumps ensures food safety and eliminates the risk of contamination.

4. Environmental Technology: Roots vacuum pumps are utilized in environmental technology applications, including wastewater treatment, biogas processing, and air pollution control. They are employed to extract gases, control emissions, and facilitate the treatment and purification of air and water.

5. Semiconductor Manufacturing: In the semiconductor industry, Roots vacuum pumps are used for processes such as ion implantation, physical vapor deposition (PVD), chemical vapor deposition (CVD), and etching. Their high pumping speed and oil-free operation are crucial for maintaining clean vacuum conditions required in semiconductor fabrication.

6. Packaging and Printing: Roots vacuum pumps are employed in packaging and printing applications. They are used for vacuum packaging of products, vacuum forming of packaging materials, and in printing presses for paper handling and ink transfer.

7. Automotive Industry: Roots vacuum pumps find application in the automotive industry for processes such as brake system vacuum assist, crankcase ventilation, and emissions control systems. They help create vacuum conditions required for the operation of various automotive systems.

8. Research and Laboratory: Roots vacuum pumps are utilized in research laboratories and scientific facilities for a wide range of applications. They are used in vacuum ovens, freeze dryers, vacuum filtration, electron microscopy, surface analysis, and other laboratory processes that require controlled vacuum environments.

9. Energy Industry: In the energy sector, Roots vacuum pumps are used for applications such as steam turbine condenser air extraction, transformer drying, and vacuum impregnation of electrical components. They help maintain proper vacuum conditions for efficient and reliable operation of energy systems.

These are just a few examples of the industrial applications where Roots vacuum pumps are commonly used. Their high pumping speed, large gas handling capacity, oil-free operation, reliability, and versatility make them suitable for a wide range of industrial processes that require efficient and reliable vacuum generation.

China Best Sales Zj/Zjb Series Roots Vacuum Pump Zj-5000   vacuum pump engine	China Best Sales Zj/Zjb Series Roots Vacuum Pump Zj-5000   vacuum pump engine
editor by CX 2024-04-13