Descrizione del prodotto
Working principle
Roots vacuum pump is a kind of rotary positive-displacement type of pump. The 2 three-lobe rotors keep a certain gap with the housing, and the 2 rotors mesh with each other and keep a certain gap when they rotate in the housing through a pair of synchronous reverse rotation high-precision gears. The diagram on the right shows the structure principle of the pump, from diagram I to IV, the rotor rotates in the house and completes 1 suction and discharge process.
The Roots vacuum pump with three-lobe rotors has technical advantages over the traditional two-lobe rotors in terms of pumping efficiency, maximum allowable differential pressure, temperature, vibration, noise and other major performances.
Main features
Compared with the traditional two-lobe Roots vacuum pump, there are below advantages:
1. Much higher efficiency, lower temperature, vibration and noise.
2. More stable and reliable, more convenient to use and maintain.
Other features:
1. Lower failure due to the rotors are fixed and no axial run-out.
2. High-precision transmission gear and precision rolling bearing are used, resulting in low noise and smooth operation.
3. The main shaft use special mechanical seal to ensure oil-free pump chamber.
7. Mechanical seal, oil seal, piston ring labyrinth seal and other types of seal can be used for end cover.
8. It is used in pump combinations together with rotary vane vacuum pump, reciprocating pump, liquid ring pump, dry screw pump and other types of backing pumps to meet various process requirements.
Applicazioni
The advantage of Roots vacuum pump is that it has large pumping efficiency even at low inlet pressure, but ordinary Roots vacuum pump can’t be used alone, it must be used in pump combinations together with the backing pumps. The Roots vacuum pump can be started only after the pressure in the system is pumped to the allowable starting pressure of the Roots vacuum pump by the backing pump.
According to different working pressure and process conditions, the backing pump of Roots vacuum pump can be rotary vane vacuum pump, liquid ring vacuum pump, dry screw vacuum pump and so on. The performance of Roots vacuum pumps are different when combination with different backing pumps.
Roots vacuum pumps are mainly used in any vacuum system requiring large pumping speed and rough and medium vacuum (103-10-2Pa), such as: vacuum coating, vacuum welding furnace, vacuum heat treatment furnace, large space simulation test, microelectronics and integrated circuits, lamp and bulb manufacturing, laser manufacturing, vacuum packaging, centralized pumping system, various chemical processing, vacuum degassing vacuum deaeration, vacuum dehydration, vacuum CHINAMFG drying, vacuum distillation.
Product Parameters
| Modello | Nominal pumping speed(50Hz) | Ultimate pressure | Maximum allowable pressure difference | Nominal motor rating (50Hz) | Nominal motor speed (50Hz) | Suction Connection size | Discharge Connection size | Peso | Backing pump recommended |
| L/s | Pa | Pa | Kw | rpm | mm | mm | Kg | ||
| ZJT-70 | 70 | ≤0.5 | ≥1.2*104 | 1.5 | 1450 | 100 | 80 | 165 | DVP180 or DSP140 |
| ZJT-150 | 150 | ≤0.5 | ≥1*104 | 3 | 2900 | 100 | 80 | 165 | DVP360 or DSP280 |
| ZJT-300 | 300 | ≤0.5 | ≥8*103 | 4 | 2900 | 160 | 100 | 275 | DVP540 or DSP540 |
| ZJT-600 | 600 | ≤0.5 | ≥6*103 | 5.5 | 2900 | 200 | 160 | 420 | DVP540 or DSP540 |
| ZJT-1200 | 1200 | ≤0.05 | ≥5*103 | 11 | 2900 | 250 | 200 | 980 | ZJTQ-300+DVP540 |
| ZJT-2500 | 2500 | ≤0.05 | ≥4*103 | 18.5 | 2900 | 320 | 250 | 1800 | ZJTQ-600+DVP540 |
| ZJT-5000 | 5000 | ≤0.05 | ≥3*103 | 37 | 1450 | 300 | 300 | 3580 | ZJTQ-1200+DVP800 |
Note:
1. The pumping speed refers to the maximum pumping speed measured at the inlet pressure of the Roots vacuum pump in the range of 67 pa to 2.67 pa under the conditions of the recommended backing pump. (see p Pumping speed diagram)
2. The ultimate pressure is the lowest value of the stable air partial pressure measured at the pump inlet with a compression vacuum gauge after full pumping without any additional container and no air inlet under the condition of the recommended backing pump.
3. The data of the above table is obtained under the condition of using the recommended backing pump, users can choose different backing vacuum pumps according to different situations, but the main performance index will be changed.
Pressure diagram
Dimensione
| Modello | L | L1 | L2 | L3 | H | H1 | H2 | H3 | A | A1 | A2 | D | D1 | D2 | N-M | d | d1 | d2 | n-m |
| ZJT-70 | 730 | 191 | 330 | 360 | 270 | 252 | 40 | 256 | 214 | Ф80 | Ф125 | Ф145 | 8-M8 | Ф50 | Ф90 | Ф110 | 4-M8 | ||
| ZJT-150 | 938 . | 273 | 132 | 184 | 350 | 330 | 116.5 | 30 | 392 | 358 | 300 | Ф100 | Ф145 | Ф165 | 8-M8 | Ф80 | Ф125 | Ф145 | 8-M8 |
| ZJT-300 | 1032 | 323 | 185 | 259 | 405 | 385 | 135 | 40 | 455 | 420 | 350 | Ф150 | Ф200 | Ф225 | 8-M10 | Ф100 | Ф145 | Ф165 | 8-M8 |
| ZJT-600 | 1282 | 405 | 220 | 304 | 520 | 495 | 165 | 35 | 587 | 548 | 450 | Ф200 | Ф260 | Ф285 | 12-M10 | Ф150 | Ф200 | Ф225 | 8-M10 |
| ZJT-1200 | 1573 | 473 | 296 | 392 | 650 | 625 | 218.5 | 58 | 722 | 678 | 560 | Ф250 | Ф310 | Ф335 | 12-M10 | Ф200 | Ф260 | Ф285 | 12-M10 |
| ZJT-2500 | 1890 | 594 | 440 | 552 | 730 | 700 | 220 | 55 | 858 | 810 | 660 | Ф320 | Ф395 | Ф425 | 12-M12 | Ф250 | Ф310 | Ф335 | 12-M10 |
FAQ
Q: What information should I offer for an inquiry?
A: You can inquire based on the model directly, but it is always recommended that you contact us so that we can help you to check if the pump is the most appropriate for your application.
Q: Can you make a customized vacuum pump?
A: Yes, we can do some special designs to meet customer applications. Such as customized sealing systems, speical surface treatment can be applied for roots vacuum pump and screw vacuum pump. Please contact us if you have special requirements.
Q: I have problems with our vacuum pumps or vacuum systems, can you offer some help?
A: We have application and design engineers with more than 30 years of experience in vacuum applications in different industries and help a lot of customers resolve their problems, such as leakage issues, energy-saving solutions, more environment-friendly vacuum systems, etc. Please contact us and we’ll be very happy if we can offer any help to your vacuum system.
Q: Can you design and make customized vacuum systems?
A: Yes, we are good for this.
Q: What is your MOQ?
A: 1 piece or 1 set.
Q: How about your delivery time?
A: 5-10 working days for the standard vacuum pump if the quantity is below 20 pieces, 20-30 working days for the conventional vacuum system with less than 5 sets. For more quantity or special requirements, please contact us to check the lead time.
Q: What are your payment terms?
A: By T/T, 50% advance payment/deposit and 50% paid before shipment.
Q: How about the warranty?
A: We offer 1-year warranty (except for the wearing parts).
Q: How about the service?
A: We offer remote video technical support. We can send the service engineer to the site for some special requirements.
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| Servizio post-vendita: | Online Video Instruction |
|---|---|
| Garanzia: | 1 anno |
| Olio o no: | Senza olio |
| Struttura: | Pompa a vuoto rotativa |
| Nominal Pumping Speed(50Hz): | 70 L/S |
| Ultimate Pressure: | 0.5 PA |
Can Vacuum Pumps Be Used in the Aerospace Sector?
Vacuum pumps indeed have various applications in the aerospace sector. Here’s a detailed explanation:
Vacuum pumps play a crucial role in several areas of the aerospace industry, supporting various processes and systems. Some of the key applications of vacuum pumps in the aerospace sector include:
1. Space Simulation Chambers: Vacuum pumps are used in space simulation chambers to replicate the low-pressure conditions experienced in outer space. These chambers are utilized for testing and validating the performance and functionality of aerospace components and systems under simulated space conditions. Vacuum pumps create and maintain the necessary vacuum environment within these chambers, allowing engineers and scientists to evaluate the behavior and response of aerospace equipment in space-like conditions.
2. Propellant Management: In space propulsion systems, vacuum pumps are employed for propellant management. They help in the transfer, circulation, and pressurization of propellants, such as liquid rocket fuels or cryogenic fluids, in both launch vehicles and spacecraft. Vacuum pumps assist in creating the required pressure differentials for propellant flow and control, ensuring efficient and reliable operation of propulsion systems.
3. Environmental Control Systems: Vacuum pumps are utilized in the environmental control systems of aircraft and spacecraft. These systems are responsible for maintaining the desired atmospheric conditions, including temperature, humidity, and cabin pressure, to ensure the comfort, safety, and well-being of crew members and passengers. Vacuum pumps are used to regulate and control the cabin pressure, facilitating the circulation of fresh air and maintaining the desired air quality within the aircraft or spacecraft.
4. Satellite Technology: Vacuum pumps find numerous applications in satellite technology. They are used in the fabrication and testing of satellite components, such as sensors, detectors, and electronic devices. Vacuum pumps help create the necessary vacuum conditions for thin film deposition, surface treatment, and testing processes, ensuring the performance and reliability of satellite equipment. Additionally, vacuum pumps are employed in satellite propulsion systems to manage propellants and provide thrust for orbital maneuvers.
5. Avionics and Instrumentation: Vacuum pumps are involved in the production and testing of avionics and instrumentation systems used in aerospace applications. They facilitate processes such as thin film deposition, vacuum encapsulation, and vacuum drying, ensuring the integrity and functionality of electronic components and circuitry. Vacuum pumps are also utilized in vacuum leak testing, where they help create a vacuum environment to detect and locate any leaks in aerospace systems and components.
6. High Altitude Testing: Vacuum pumps are used in high altitude testing facilities to simulate the low-pressure conditions encountered at high altitudes. These testing facilities are employed for evaluating the performance and functionality of aerospace equipment, such as engines, materials, and structures, under simulated high altitude conditions. Vacuum pumps create and control the required low-pressure environment, allowing engineers and researchers to assess the behavior and response of aerospace systems in high altitude scenarios.
7. Rocket Engine Testing: Vacuum pumps are crucial in rocket engine testing facilities. They are utilized to evacuate and maintain the vacuum conditions in engine test chambers or nozzles during rocket engine testing. By creating a vacuum environment, these pumps simulate the conditions experienced by rocket engines in the vacuum of space, enabling accurate testing and evaluation of engine performance, thrust levels, and efficiency.
It’s important to note that aerospace applications often require specialized vacuum pumps capable of meeting stringent requirements, such as high reliability, low outgassing, compatibility with propellants or cryogenic fluids, and resistance to extreme temperatures and pressures.
In summary, vacuum pumps are extensively used in the aerospace sector for a wide range of applications, including space simulation chambers, propellant management, environmental control systems, satellite technology, avionics and instrumentation, high altitude testing, and rocket engine testing. They contribute to the development, testing, and operation of aerospace equipment, ensuring optimal performance, reliability, and safety.
In che modo le pompe per vuoto influiscono sulle prestazioni delle camere da vuoto?
Quando si parla di prestazioni delle camere a vuoto, le pompe per vuoto svolgono un ruolo fondamentale. Ecco una spiegazione dettagliata:
Le camere a vuoto sono spazi chiusi progettati per creare e mantenere un ambiente a bassa pressione. Sono utilizzate in diversi settori industriali e scientifici, come la produzione, la ricerca e la lavorazione dei materiali. Le pompe per vuoto sono utilizzate per evacuare l'aria e altri gas dalla camera, creando una condizione di vuoto o di bassa pressione. Le prestazioni delle camere a vuoto sono direttamente influenzate dalle caratteristiche e dal funzionamento delle pompe per vuoto utilizzate.
Ecco alcuni modi in cui le pompe per vuoto influenzano le prestazioni delle camere per vuoto:
1. Raggiungimento e mantenimento dei livelli di vuoto: La funzione principale delle pompe per vuoto è quella di creare e mantenere il livello di vuoto desiderato all'interno della camera. Le pompe per vuoto rimuovono l'aria e altri gas, riducendo la pressione all'interno della camera. L'efficienza e la capacità della pompa per vuoto determinano la rapidità con cui viene raggiunto e mantenuto il livello di vuoto desiderato. Le pompe per vuoto ad alte prestazioni sono in grado di evacuare rapidamente la camera e di mantenere il livello di vuoto desiderato anche in presenza di perdite di gas o di produzione continua di gas all'interno della camera.
2. Velocità di pompaggio: la velocità di pompaggio di una pompa per vuoto si riferisce al volume di gas che può rimuovere dalla camera per unità di tempo. La velocità di pompaggio influisce sulla velocità di evacuazione della camera e sul tempo necessario per raggiungere il livello di vuoto desiderato. Una velocità di pompaggio più elevata consente un'evacuazione più rapida e tempi di ciclo più brevi, migliorando l'efficienza complessiva della camera da vuoto.
3. Livello di vuoto finale: Il livello di vuoto finale è la pressione più bassa che può essere raggiunta nella camera. Dipende dal design e dalle prestazioni della pompa per vuoto. Le pompe per vuoto di qualità superiore possono raggiungere livelli di vuoto finale più bassi, importanti per le applicazioni che richiedono livelli di vuoto più elevati o per i processi sensibili ai gas residui.
4. Rilevamento delle perdite e rimozione dei gas: Le pompe per vuoto possono anche contribuire al rilevamento delle perdite e alla rimozione dei gas all'interno della camera. Grazie all'evacuazione continua della camera, è possibile identificare e risolvere tempestivamente eventuali perdite o ingressi di gas. In questo modo si garantisce che la camera mantenga il livello di vuoto desiderato e si riduce al minimo la presenza di contaminanti o gas indesiderati.
5. Controllo della contaminazione: Alcune pompe per vuoto, come quelle a tenuta d'olio, utilizzano fluidi lubrificanti che possono introdurre contaminanti nella camera. Questi contaminanti possono essere indesiderati per alcune applicazioni, come la produzione di semiconduttori o la ricerca. Pertanto, la scelta della pompa per vuoto e il suo potenziale di introduzione di contaminanti devono essere presi in considerazione per mantenere la pulizia e la purezza richieste della camera da vuoto.
6. Rumore e vibrazioni: Le pompe per vuoto possono generare rumori e vibrazioni durante il funzionamento, che possono influire sulle prestazioni e sull'utilizzabilità della camera da vuoto. Un rumore o una vibrazione eccessivi possono interferire con esperimenti delicati, compromettere l'accuratezza delle misure o causare stress meccanico sui componenti della camera. La scelta di pompe per vuoto con bassi livelli di rumore e vibrazioni è importante per mantenere le prestazioni ottimali della camera.
È importante notare che i requisiti specifici e i fattori di prestazione di una camera a vuoto possono variare a seconda dell'applicazione. I diversi tipi di pompe per vuoto, come le pompe rotative a palette, le pompe a secco o le pompe turbomolecolari, offrono capacità e caratteristiche diverse per soddisfare esigenze specifiche. La scelta della pompa per vuoto deve tenere conto di fattori quali il livello di vuoto desiderato, la velocità di pompaggio, il vuoto finale, il controllo della contaminazione, i livelli di rumorosità e di vibrazioni e la compatibilità con i materiali della camera e i gas utilizzati.
In sintesi, le pompe per vuoto hanno un impatto significativo sulle prestazioni delle camere per vuoto. Consentono di creare e mantenere il livello di vuoto desiderato, influenzano la velocità di pompaggio e il vuoto finale raggiunto, contribuiscono al rilevamento delle perdite e alla rimozione dei gas e influiscono sul controllo della contaminazione. Un'attenta valutazione della scelta della pompa per vuoto garantisce prestazioni ottimali della camera per le varie applicazioni.
What Is a Vacuum Pump, and How Does It Work?
A vacuum pump is a mechanical device used to create and maintain a vacuum or low-pressure environment within a closed system. Here’s a detailed explanation:
A vacuum pump operates on the principle of removing gas molecules from a sealed chamber, reducing the pressure inside the chamber to create a vacuum. The pump accomplishes this through various mechanisms and techniques, depending on the specific type of vacuum pump. Here are the basic steps involved in the operation of a vacuum pump:
1. Sealed Chamber:
The vacuum pump is connected to a sealed chamber or system from which air or gas molecules need to be evacuated. The chamber can be a container, a pipeline, or any other enclosed space.
2. Inlet and Outlet:
The vacuum pump has an inlet and an outlet. The inlet is connected to the sealed chamber, while the outlet may be vented to the atmosphere or connected to a collection system to capture or release the evacuated gas.
3. Mechanical Action:
The vacuum pump creates a mechanical action that removes gas molecules from the chamber. Different types of vacuum pumps use various mechanisms for this purpose:
– Positive Displacement Pumps: These pumps physically trap gas molecules and remove them from the chamber. Examples include rotary vane pumps, piston pumps, and diaphragm pumps.
– Momentum Transfer Pumps: These pumps use high-speed jets or rotating blades to transfer momentum to gas molecules, pushing them out of the chamber. Examples include turbomolecular pumps and diffusion pumps.
– Entrapment Pumps: These pumps capture gas molecules by adsorbing or condensing them on surfaces or in materials within the pump. Cryogenic pumps and ion pumps are examples of entrainment pumps.
4. Gas Evacuation:
As the vacuum pump operates, it creates a pressure differential between the chamber and the pump. This pressure differential causes gas molecules to move from the chamber to the pump’s inlet.
5. Exhaust or Collection:
Once the gas molecules are removed from the chamber, they are either exhausted into the atmosphere or collected and processed further, depending on the specific application.
6. Pressure Control:
Vacuum pumps often incorporate pressure control mechanisms to maintain the desired level of vacuum within the chamber. These mechanisms can include valves, regulators, or feedback systems that adjust the pump’s operation to achieve the desired pressure range.
7. Monitoring and Safety:
Vacuum pump systems may include sensors, gauges, or indicators to monitor the pressure levels, temperature, or other parameters. Safety features such as pressure relief valves or interlocks may also be included to protect the system and operators from overpressure or other hazardous conditions.
It’s important to note that different types of vacuum pumps have varying levels of vacuum they can achieve and are suitable for different pressure ranges and applications. The choice of vacuum pump depends on factors such as the required vacuum level, gas composition, pumping speed, and the specific application’s requirements.
In summary, a vacuum pump is a device that removes gas molecules from a sealed chamber, creating a vacuum or low-pressure environment. The pump accomplishes this through mechanical actions, such as positive displacement, momentum transfer, or entrapment. By creating a pressure differential, the pump evacuates gas from the chamber, and the gas is either exhausted or collected. Vacuum pumps play a crucial role in various industries, including manufacturing, research, and scientific applications.
editor by CX 2023-12-17
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