China factory 0.5PA 150L/S Tri-Lobe Vacuum Pump for Chemical Industry vacuum pump ac system

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.

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After-sales Service: Online Video Instruction
Warranty: 1 Year
Oil or Not: Oil Free
Structure: Rotary Vacuum Pump
Nominal Pumping Speed(50Hz): 150 L/S
Ultimate Pressure: 0.5 PA

Vacuum Pump

Disadvantages of using a vacuum pump

A vacuum pump is a device that pulls gas molecules out of a volume and leaves a partial vacuum. Its main function is to create a relative vacuum within a given volume. There are several types of vacuum pumps. Some of them are better suited for specific purposes than others. However, there are some disadvantages to using a vacuum pump.

Application of vacuum pump

Vacuum pumps are invaluable tools in many industrial and scientific processes. They are often used to move gas and other harmful substances and to clear clogged drains. They are also used to support mechanical equipment. For example, they can be mounted on the engine of a motor vehicle or the power hydraulic component of an aircraft. No matter how they are used, they should fit the application.
The principle of a vacuum pump is to draw gas from a sealed chamber to create a partial vacuum. Over the years, vacuum pump technology has evolved from its original beginnings to its current form. Today, there are many types of vacuum pumps, including rotary vane pumps, momentum transfer pumps, and regeneration pumps.
The semiconductor industry is a major user of vacuum pumps. Among other applications, these pumps are commonly used for mounting circuit boards, securing components, blowing and jetting, and pumping. The use of renewable resources has paved the way for widespread semiconductor production, where vacuum pumps are crucial. This manufacturing shift is expected to boost vacuum pump sales across Europe.
Vacuum Pump
The most common types of vacuum pumps are positive displacement and rotary vane pumps. Positive displacement pumps are most effective for rough vacuum applications and are usually paired with momentum transfer pumps. These pumps are used in pharmaceutical, food and medical processes. They are also used in diesel engines, hydraulic brakes and sewage systems.
Positive displacement pumps are used to create low vacuum conditions and create a partial vacuum. These pumps create lower air pressure by enlarging the chamber and allowing gas to flow into the chamber. The air in the cavity is then vented to the atmosphere. Alternatively, momentum transfer pumps, also known as molecular pumps, use high-speed rotating blades to create dense fluids.
Vacuum Pump

Their drawbacks

Vacuum pumps are useful in industrial applications. However, they are not perfect and have some drawbacks. One of them is that their output is limited by the vacuum hose. Vacuum hoses are the bottleneck for vacuum pump performance and evacuation rates. The hose must be kept free of water and organic matter to ensure the highest possible vacuum.
Dry vacuum pumps do not have these problems. They may be more cost-effective but will increase maintenance costs. Water consumption is another disadvantage. When pond water is used, the pump puts additional pressure on the treatment facility. Additionally, contaminants from the gas can become trapped in the water, shortening the life of the pump.
Another disadvantage of vacuum pumps is their limited operating time at low vacuum. Therefore, they are only suitable for extremely high vacuum levels. Diaphragm pumps are another option for industrial applications. They have a sealed fluid chamber that allows a moderate vacuum. They also feature short strokes and a low compression ratio, making them quieter than their reciprocating counterparts.
Vacuum pumps are used in many industrial and scientific processes. They can be used to transport hazardous materials or clear clogged drains. They are also used in rear doors and dump tanks. Certain types of vacuum pumps can cause fluid blockages, which can be harmful. The vacuum pump should also be well suited to the fluid in it to avoid contamination.
Another disadvantage is the lack of proper vacuum system testing equipment. Mechanics often underestimate the importance of a properly functioning vacuum system. Most stores lack the equipment needed for proper troubleshooting. Typically, mechanics rely on the cockpit vacuum gauge to determine if the pump is working properly.
Some vacuum pumps are capable of providing constant vacuum. These pumps are also capable of eliminating odors and spills. However, these advantages are outweighed by some disadvantages of vacuum pumps.

China factory 0.5PA 150L/S Tri-Lobe Vacuum Pump for Chemical Industry   vacuum pump ac system	China factory 0.5PA 150L/S Tri-Lobe Vacuum Pump for Chemical Industry   vacuum pump ac system
editor by CX 2024-03-28

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