Product Description
Pump description:
Model ZJ Mechanical Booster Pump, also known as a Roots pump, is a volumetric pump.It employs a pair of rotors, identical and in 8-figure with certain clearance between them in the pump housing, rotating at the same speed in opposite directions to perform function of suction and discharge of gas. The 2 rotors are supported by rolling bearings in the end covers of the pump, rotating at high speed and are kept at a fixed relative position by a pair of timing gears. The end clearance between rotors and end covers are fixed by adjustable metal shims between the bearing housings and the end cover at the fixed end, which ensures one-direction expansion of the rotor when temperature rises during its operation.
Four sets of inner seals (also known as piston ring) in the 2 end covers prevent lube oil entering into the pump housing. The shaft seal at the front-end cover, also called as framework oil seal or shaft seal, prevents leakage of air into the pump housing.
In order to reduce temperature of the pump, all models of pumps (expect the 2 smallest models) are equipped with a gearbox cooler and front-end cover cooler.
Power is transmitted through a coupling or V-belt from the motor to the driving shaft of the pump and then through synchronizing gears to the driven shaft
Specifications:
| Model | Suction capacity (L/S) |
Limit vacuum (≤Pa) |
Speed (rpm) |
Motor Power (kw) |
Inlet Dia. (mm) |
Outlet Dia. (mm) |
Weight (Kg) |
Recommended backing pump(model) |
| ZJ-70 | 70 | 6×10-2 | 2780 | 1.5 | 80 | 50 | 87 | 2X-8 |
| ZJB-70 | 5×10-2 | 100 | ||||||
| ZJ-150A | 150 | 6×10-2 | 2900 | 3 | 100 | 100 | 198 | 2X-15 |
| ZJB-150 | 5×10-2 | 215 | ||||||
| ZJ-300 | 300 | 6×10-2 | 1450 | 4/5.5 | 150 | 150 | 490 | 2X-30A |
| ZJB-300 | 5×10-2 | 480 | ||||||
| ZJ-600 | 600 | 6×10-2 | 2900 | 5.5/7.5 | 150 | 150 | 490 | 2X-70A |
| ZJB-600 | 5×10-2 | 503 | ||||||
| ZJ-1200A | 1200 | 6×10-2 | 1450 | 11 | 300 | 300 | 1550 | 2X-70A (2sets) |
| ZJB-1200 | 5×10-2 | 250 | 250 | 1580 |
Applications:
The main advantage of Roots vacuum pump is that it can operate with high pumping speed under lower suction pressures, however, has to be backed by a backing pump.Under normal working conditions, it is permissible to not add by-pass pipes.Roots vacuum pump should not operate with a higher-pressure difference than allowable,otherwise overheating and overload will cause damage of Roots vacuum pump.
Therefore, proper backing pump and necessary protection devices must be considered.Oil sealed mechanical pump is usually selected as the fore vacuum pump. Other types of backing pumps may be used where their requirement for ultimate vacuum is not too strict. Particularly, when gas pumped containing large amount of vapor, water-ring vacuum pump maybe an ideal option though ultimate vacuum achieved is on the low side.
Product display:
Packaging:
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Standard export polywooden cases.
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Customized packaging can be available.
Shipping:
| Shipping method | Note |
| Express | Door to door, very convenient, don’t need customs clearance or pick-up. |
| By air | Airport to airport, you need to do the customs clearance and pick up the goods at your local airport. |
| By sea | Port to port and you need to do the customs clearance and pick-up the goods at your local port. |
Our services:
Pre-Sales Service
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Provide 24-hour reply.
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Provide suitable models according to clients’ requirements.
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Provide detailed product specifications and reasonal prices.
In-Sales Service
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Supervise whole production time.
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Provide product’s testing performance curve to customers.
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Provide inspection pictures to customers after we finish production.
After-Sales Service
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Provide installation manual.
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Under correct installation, normal maintenance and using,we guarantee one-year warranty.
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If product has malfunction,we’ll reply you within 24 hour and provide solution or even send technical staff to spot after receiving maintenance notification.
FAQ:
1. Q: Are you a manufacturer or trading company?
A: We are manufacturer of vacuum pumps and water pumps in China since 1986.
2. Q: What’s your MOQ?
A: One set is ok.
3. Q: What’s your payments terms?
A: T/T, Western Union……
4. Q: What certificates do you have?
A: CE, ISO 9001 ….
5. Q: How about the warranty?
A: 12 months warranty since delivery.
6. Q: What’s the delivery time?
A: For different models,different motor specs and different material,delivery time is different,please double confirm with our sales team.
7. Q: Can you do OEM brand?
A: Yes, welcome.
8. Q: Quality reliable?
A: We have whole testing system controlled by micro-machine,testing performance curve can be sent to clients before arrange delivery.
Company overview:
Established in 1986, our company has been focusing on the development and manufacture of vacuum pumps and water pumps.We are a comprehensive pump company integrating production, sales and after-sales maintenance services.
The main products include liquid ring vacuum pumps;rotary vane vacuum pumps;roots vacuum pump;centrifugal water pump and customized vacuum pump system,which are widely used in all kinds of plastic extrusion line;medical and pharmaceutical industry(autoclave sterilizer/capsule filling and sealing machine);food-related industry(beverage machine/milking machine/sugar plant);chemical industry;power plant;coal mine etc.
| Warranty: | One Year |
|---|---|
| Oil or Not: | Oil |
| Structure: | Reciprocating Vacuum Pump |
| Exhauster Method: | Positive Displacement Pump |
| Vacuum Degree: | High Vacuum |
| Work Function: | Mainsuction Pump |
| Customization: |
Available
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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.
What Are the Advantages of Using Roots Vacuum Pumps?
Roots vacuum pumps, also known as Roots blowers or rotary lobe pumps, offer several advantages that make them a popular choice for various industrial applications. Here’s a detailed explanation of the advantages of using Roots vacuum pumps:
1. High Pumping Speed: Roots vacuum pumps are known for their high pumping speed, which refers to the rate at which they can remove gas from a vacuum system. The unique design of synchronized rotating lobes enables these pumps to handle large volumes of gas efficiently. This high pumping speed makes Roots vacuum pumps well-suited for applications that require rapid evacuation or continuous extraction of gases.
2. Large Gas Handling Capacity: Roots vacuum pumps have a large gas handling capacity, allowing them to handle a wide range of gases, including clean air, corrosive gases, and vapors. Their robust construction and ability to handle gas with particulates or liquids make them suitable for applications in industries such as chemical processing, pharmaceuticals, food processing, and wastewater treatment.
3. Oil-Free and Contamination-Free Operation: One of the significant advantages of Roots vacuum pumps is that they operate without the need for lubrication. The non-contacting design of the pump eliminates the risk of oil contamination in the vacuum system. This is particularly important in applications where clean, oil-free vacuum environments are required, such as semiconductor manufacturing, electronics, and research laboratories.
4. Reliable and Low Maintenance: Roots vacuum pumps are known for their reliability and low maintenance requirements. Since there is no lubrication or contact between the lobes, there is minimal wear and tear, reducing the need for frequent maintenance or replacement of parts. This results in reduced downtime and lower operating costs for the users.
5. Noise and Vibration Reduction: Roots vacuum pumps are designed to operate with low noise and vibration levels. The precision engineering and balanced rotation of the lobes help minimize noise generation and vibration transmission. This makes Roots vacuum pumps suitable for applications where noise reduction and vibration control are important, such as in laboratories, medical facilities, and residential areas.
6. Wide Range of Vacuum Levels: While Roots vacuum pumps are not capable of achieving high vacuum levels on their own, they can be combined with other vacuum pumps, such as rotary vane pumps or diffusion pumps, to create hybrid or combination pumping systems. This allows them to cover a wide range of vacuum levels, making them versatile and adaptable to different application requirements.
7. Energy Efficiency: Roots vacuum pumps are designed to be energy-efficient, offering a favorable power-to-pumping speed ratio. Their efficient design and minimal internal losses help reduce energy consumption, resulting in lower operating costs for the users. This makes them an economical choice for continuous or high-throughput processes that require significant vacuum power.
8. Versatility and Compatibility: Roots vacuum pumps are compatible with various gases and can be used in a wide range of industrial applications. They find applications in industries such as chemical processing, pharmaceuticals, food processing, automotive, packaging, and environmental technology. Their versatility and compatibility make them suitable for both rough vacuum applications and as part of complex vacuum systems.
In summary, the advantages of using Roots vacuum pumps include high pumping speed, large gas handling capacity, oil-free and contamination-free operation, reliability, low maintenance requirements, noise and vibration reduction, a wide range of vacuum levels, energy efficiency, versatility, and compatibility. These advantages make Roots vacuum pumps a preferred choice for many industrial processes that require efficient and reliable vacuum generation.
editor by CX 2023-12-14