China best Zjt-70 70L/S Zj-70 1.5kw Tri-Lobe Roots Vacuum Pump with high quality

Product Description

 

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.

Applications

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 CZPT drying, vacuum distillation.

Product Parameters

Model Nominal pumping speed(50Hz) Ultimate pressure Maximum allowable pressure difference Nominal motor rating (50Hz)   Nominal motor speed  (50Hz)  Suction Connection size Discharge Connection size Weight 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

 

 

Dimension

 

Model 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.

After-sales Service: Online Video Instruction
Warranty: 1 Year
Oil or Not: Oil Free
Structure: Rotary Vacuum Pump
Nominal Pumping Speed(50Hz): 70 L/S
Ultimate Pressure: 0.5 PA

Vacuum Pump

Types of vacuum pumps

A vacuum pump is a device that pulls gas molecules out of a sealed volume and maintains a partial vacuum. Its job is to create a relative vacuum within its capabilities. Several types of vacuum pumps are available, including scroll and rotary piston models. Each has its own characteristics and uses. To learn more, read this article.

Screw Pump

Screw vacuum pumps use a mechanical screw to move an air or gas chamber to the axial housing wall. The movement of the chamber reduces the volume of gas, which is pre-compressed before being expelled through the pressure connection. These pumps can be single-pitch models or variable-pitch models. Variable pitch models feature variable pitch rotors that help distribute heat loads evenly across the rotor. Some models also include a thermostatic control valve that shuts off the pump if the water temperature gets too high. Screw vacuum pumps are available in single-ended or double-ended designs. Single-ended and double-ended screw pumps provide up to 3.7 x 10-4 Torr and an ultimate vacuum of 900 m3/h (560 cfm), which is sufficient for many industrial processes. Progressive cavity pumps are particularly suitable for vapor compression applications. These pumps also have an internal rotor to minimize layer formation. Combined with air cooling, they are suitable for use in hazardous environments. In addition, the screw rotor design prevents the build-up of substances in the pump cavity that could react with high temperatures. These pumps are also easily removable for quick cleaning. Screw vacuum pumps are also designed for low cost and minimal maintenance. Agknx screw vacuum pumps are designed in Germany and are very reliable and economical. Pump performance depends on cooling system and temperature. The temperature of the water used should be kept within a certain range, otherwise the pump may overheat and fail. Screw vacuum pumps are often used in scientific experiments. They are standard main pumps in large storage rings, gravitational wave detectors, and space simulation chambers. One of the largest ultra-high vacuum chambers in the world is made of screw vacuum pumps. An example is the KATRIN experiment. There are two types of screw vacuum pumps: oil-sealed and dry. Oil-sealed screw pumps use oil as a sealant and coolant. They are suitable for demanding vacuum applications such as woodworking and plastics processing. Dry screw pumps have an air-cooled chamber, and they can achieve higher vacuum levels than oil-sealed pumps.

Rotary Piston Vacuum Pumps

Rotary Piston Vacuum Pumps provide the rugged performance essential for applications requiring vacuum. They can deliver flow rates up to 1280 acfm and reach deep vacuum levels up to 0.0004 Torr. They are available in single-stage and two-stage models. The report also provides detailed information about the key players, their financial status, and business overview. A rotary piston vacuum pump is a versatile and affordable vacuum device. They are available in single-stage and two-stage configurations with higher capacity and higher vacuum. They can be easily maintained by an in-house maintenance team or by a local third-party service shop. Pump manufacturers can also provide services. Rotary piston vacuum pumps are available in single-stage and compound designs. They are ideal for a variety of applications. Their high-performance design enables them to operate at any pressure up to atmospheric pressure. They also have no metal-to-metal contact, which makes them ideal for dirty applications. Whether you need a pump that can operate at high or low pressure, a rotary piston vacuum pump is an excellent choice. When purchasing a rotary piston vacuum pump, it is important to choose a manufacturer with a reputation for providing high-quality service and repairs. In addition to the high quality of the pump, you also need to ensure its availability. You should also consider the cost and quality of the part. A good vacuum pump company should also provide technical support, service support and accessories. Oil-free pumps are a popular choice for laboratories, clean rooms and confined rooms. Their high-quality parts are made from lightweight, corrosion-resistant and specially formulated polymers. Oil-free pumps can handle high levels of air moisture and are excellent at removing contaminants. However, they are not suitable for applications containing organic vapors or acids. Atlas Copco’s GLS rotary piston pumps are a popular choice for industrial vacuum applications. Its space-saving design makes it an ideal solution for harsh environments. It is also very reliable and has low lifecycle costs. It has an automatic lubrication system and water mizer to minimize water consumption.
Vacuum Pump

Scroll Vacuum Pumps

<br Scroll Vacuum Pumps can be used to pump air, gases, and other fluids. They are suitable for creating a vacuum in transfer chambers, mass spectrometers, and load lock chambers. They are also ideal for helium leak detectors and other analytical equipment. Scroll vacuum pumps are available in a variety of models, including the diaphragm, turbine, and oil-dry scroll models. They are used in a variety of industries, including the semiconductor, biotechnology, and pharmaceutical industries. Flexible and durable oil-free scroll vacuum pumps are an excellent choice for light industrial, general laboratory, and research applications. They also offer several advantages over other vacuum pumps, including low operating costs and environmental sustainability. Scroll vacuum pumps do not require oil, which is a big advantage in terms of cost. Scroll vacuum pumps are also quieter. Scroll vacuum pumps are designed for low, medium, and high vacuum systems. They create a high vacuum and cannot tolerate particles. Although they are relatively small, they are ideal for vacuum laboratory applications and are also suitable for dry vacuum pumping. They can be combined with chemically resistant PTFE components, making them more suitable for chemical applications. Scroll vacuum pumps feature a unique design that makes them very versatile and efficient. The pump has two helical structures, one is fixed and the other is rotating, which can effectively pump gas and liquid. When the rotor begins to move, the gas is compressed slightly and then flows through the system to the exhaust port. Scroll vacuum pumps are efficient, oil-free and compact. Known for their high tolerance to the atmosphere, they feature sensorless INFORM(r) control to minimize noise and vibration. These vacuum pumps are ideal for low to medium flow applications including analytical equipment, freeze dryers, vacuum coaters and mass spectrometers. The most important advantage of a scroll vacuum pump is its reliability. They can be used for three years or more without problems and are easy to maintain. With proper maintenance, they can reduce repair costs.
Vacuum Pump

Diaphragm vacuum pumps

Diaphragm vacuum pumps are used in a variety of industrial processes. These pumps use an elastic diaphragm fixed around the outer diameter. They are efficient and can handle most types of liquids. They are commonly used for dewatering, filling and water removal. These pumps are easy to maintain. Diaphragm vacuum pumps are available in a variety of sizes and power outputs. Oil-free diaphragm vacuum pumps do not require oil, lubrication and cooling. These pumps are compatible with many types of laboratory equipment. Diaphragm vacuum pumps are equipped with dual voltage motors and DC drives for greater flexibility and durability. Diaphragm vacuum pumps can achieve higher vacuum levels than rotary vane pumps. They are more efficient than diaphragm pumps. They do not require oil and require less maintenance than their rotary vane counterparts. However, the diaphragms of these pumps may need to be replaced every few years. Diaphragm vacuum pumps are the most popular type of vacuum pump and can be used for a variety of applications. They can be used for everyday work and can be large enough to be used in a vacuum oven or rotary evaporator. Diaphragm vacuum pumps use pulsed motion to move air. They eliminate the need for oil and are highly chemical and steam resistant. They can handle a wide variety of samples, including high viscosity liquids. Diaphragm vacuum pumps are generally smaller than other types of vacuum pumps. Scroll pumps are made of metal and are generally recommended for solvent and water samples. They are not recommended for high acid samples. However, they are suitable for freeze drying. They can also be used for concentration applications. In this way, they have greater displacement capacity and can reach higher ultimate vacuum levels.

China best Zjt-70 70L/S Zj-70 1.5kw Tri-Lobe Roots Vacuum Pump   with high quality China best Zjt-70 70L/S Zj-70 1.5kw Tri-Lobe Roots Vacuum Pump   with high quality
editor by CX 2023-04-18