Item Description
Operating basic principle
Roots vacuum pump, also recognized as mechanical booster pump, is a rotary constructive displacement vacuum pump. The schematic construction of the Roots vacuum pump is proven in Figure on the left. There are 2 figure-8 rotors in the pump chamber, which are installed on a pair of shafts in parallel, and are pushed by a pair of synchronous gear. The rotor and the rotor, the rotors and the pump chamber maintain a particular hole and do not get in touch with each and every other, so the friction decline throughout operation is quite little, the friction electricity consumption is really modest, and large-velocity procedure can be attained.
Determine underneath exhibits the inner composition of the Roots vacuum pump. The 2 rotors of the pump are supported in the rolling bearings on the finish covers on both sides of the pump chamber, and rely on a pair of adjustable synchronous gears to maintain the 2 rotors rotating at higher speed. A certain mutual situation, and the conclude experience gap amongst the rotor and the conclude protect is guaranteed by the specific construction of the mounted stop (closer to the motor side), so that the pump can only broaden to 1 stop of the gearbox due to heat in the course of operation.
The 4 sets of PTFE piston ring seals in the finish caps on equally sides can stop the lubricating oil in the oil tanks on the two sides from coming into the pump chamber, and the balanced mechanical seal at the outlet shaft can prevent the environment from leaking into the pump chamber.
The cooling strategy of the pump is typically air cooling. If the pump is employed for doing work in the substantial strain selection, it is suggested to decide on a pump with a water cooling framework. The electrical power of the motor is transmitted to the driving shaft via the coupling, and then the pushed shaft is pushed to rotate by the driving shaft through the synchronous gear. ZJ series Roots vacuum pumps are of horizontal composition, and the pump is directly connected with the motor by signifies of a coupling. But the pump with special needs can adopt the V-belt push structure.
ZJP sort Roots vacuum pump with bypass valve is a derivative product of ZJ type Roots vacuum pump. The pumping theory is the very same as that of ZJ kind pump. It also makes use of a pair of 8-formed rotors to preserve a specified hole in the pump casing. It rotates to produce suction and exhaust. The big difference is that the inlet and exhaust ports of the ZJP sort Roots vacuum pump with bypass valve are connected, and a gravity valve is put in vertically on the channel of the 2 (see Determine on the remaining). When the pressure on the valve induced by the pressure variation amongst the intake port and the exhaust port exceeds the fat of the valve alone, it will immediately open up. This price of strain big difference which lead to the valve to open is the optimum differential force at which the pump can operate reliably. Therefore, this valve is in fact an overload automatic defense valve, and it is also the greatest benefit of ZJP sort Roots vacuum pump. Theoretically, the ZJP Roots pump can be began synchronously with the backing pump below atmospheric stress to pump the system. If the technique volume is large, the bypass valve of the ZJP Roots pump is open for a long time, and the pump’s efficient pumping speed is tiny, so it is not cost-effective to commence the ZJP sort Roots pump at atmospheric pressure for big methods. It is recommended to start off the ZJP Roots vacuum pump when the backing pump reaches a particular force.
The benefit of the Roots vacuum pump is that it has a increased pumping velocity at a decrease inlet strain, but it can not be utilised by yourself. There should be a backing vacuum pump in collection, and the force in the program is pumped by the backing vacuum pump to an allowable commencing pressure of the Roots vacuum pump just before it is started(See figure on the left). In common, the Roots vacuum pump is not authorized to perform below high pressure difference, in any other case it will be overloaded, overheated and broken, so the backing vacuum pump should be selected fairly, and the essential protective equipment need to be put in.
The backing vacuum pump is generally an oil-sealed mechanical pump, but if the ultimate strain prerequisite is not higher, other kinds of tough vacuum pump can be utilized as the backing pump, particularly when the gasoline containing a massive amount of drinking water vapor is extracted, the dry screw vacuum pump is recommended as the backing pump.
Merchandise Parameters
| Model | Pumping velocity (L/S) | Ultimate force (Pa) | Max. stress distinction (Pa) | Motor pace (rpm) | Motor Electricity (kw) | Size(mm) | Weight (kg) | |
| Inlet | Outlet | |||||||
| ZJ-30 | 30 | 6xl0-2 | 8000 | 2770 | 0.75 | 50 | 40 | 66 |
| ZJP-thirty | 5xl0-two | 75 | ||||||
| ZJ-70 | 70 | 6xl0-2 | 6000 | 2780 | 1.5 | 80 | 50 | 87 |
| ZJP-70 | 5xl0-2 | 100 | ||||||
| ZJ-a hundred and fifty | 150 | 6xl0-2 | 6000 | 2900 | 3 | 100 | 100 | 198 |
| ZJP-a hundred and fifty | 5xl0-two | 215 | ||||||
| ZJ-300 | 300 | 6xl0-two | 5000 | 1450 | 4 | 150 | 150 | 490 |
| ZJP-three hundred | 5xl0-two | 480 | ||||||
| ZJ-600 | 600 | 6xl0-2 | 4000 | 2900 | 5.5 | 150 | 150 | 490 |
| ZJP-600 | 5xl0-two | 503 | ||||||
| ZJ-1200 | 1200 | 6xl0-2 | 3000 | 1450 | 11 | 300 | 300 | 1550 |
| ZJP-1200 | 5xl0-2 | 1580 | ||||||
| ZJ-2500 | 2500 | 5xl0-2 | 3000 | 2900 | eighteen.five | three hundred | three hundred | 1620 |
Remark:
one. The pumping pace refers to the highest pumping pace calculated when the inlet pressure of the Roots vacuum pump is in the range of 67 Pa ~ 2.sixty seven Pa below the issue that the recommended backing pump is used.
two. The final force refers to the steady bare minimum air pressure measured at the inlet of the pump with a vacuum gauge after fully operation without having any added container, the pump port is shut and no consumption air is supplied underneath the situation that the advisable backing pump is used.
3. The performances in the earlier mentioned desk are acquired under the issue that the suggested backing pump is utilised. Customers can pick diverse backing vacuum pumps according to various circumstances, but their principal overall performance information will range.
Stress diagram
Dimension
FAQ
Q: What info should I provide for an inquiry?
A: You can inquire based on the model straight, but it is constantly advisable that you make contact with us so that we can assist you to check if the pump is the most appropriate for your software.
Q: Can you make a tailored vacuum pump?
A: Yes, we can do some unique styles to fulfill client applications. This kind of as customized sealing techniques, speical area remedy can be used for roots vacuum pump and screw vacuum pump. Please speak to us if you have unique demands.
Q: I have difficulties with our vacuum pumps or vacuum techniques, can you supply some aid?
A: We have application and design engineers with a lot more than thirty many years of expertise in vacuum purposes in distinct industries and support a great deal of customers solve their troubles, this kind of as leakage troubles, vitality-saving solutions, far more environment-friendly vacuum methods, etc. Make sure you get in touch with us and we are going to be extremely pleased if we can offer any assist to your vacuum method.
Q: Can you design and style and make personalized vacuum methods?
A: Of course, we are good for this.
Q: What is your MOQ?
A: 1 piece or 1 established.
Q: How about your supply time?
A: 5-ten doing work days for the standard vacuum pump if the quantity is below 20 parts, twenty-30 doing work days for the conventional vacuum program with significantly less than 5 sets. For a lot more quantity or particular needs, you should speak to us to verify the direct time.
Q: What are your payment terms?
A: By T/T, fifty% progress payment/deposit and 50% paid before shipment.
Q: How about the guarantee?
A: We supply 1-12 months warranty (except for the wearing parts).
Q: How about the service?
A: We offer you distant video complex assistance. We can deliver the service engineer to the website for some particular needs.
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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): | 70 L/S |
| Ultimate Pressure: | 0.06 PA |
###
| Model | Pumping speed (L/S) | Ultimate pressure (Pa) | Max. pressure difference (Pa) | Motor speed (rpm) | Motor Power (kw) | Size(mm) | Weight (kg) | |
| Inlet | Outlet | |||||||
| ZJ-30 | 30 | 6xl0-2 | 8000 | 2770 | 0.75 | 50 | 40 | 66 |
| ZJP-30 | 5xl0-2 | 75 | ||||||
| ZJ-70 | 70 | 6xl0-2 | 6000 | 2780 | 1.5 | 80 | 50 | 87 |
| ZJP-70 | 5xl0-2 | 100 | ||||||
| ZJ-150 | 150 | 6xl0-2 | 6000 | 2900 | 3 | 100 | 100 | 198 |
| ZJP-150 | 5xl0-2 | 215 | ||||||
| ZJ-300 | 300 | 6xl0-2 | 5000 | 1450 | 4 | 150 | 150 | 490 |
| ZJP-300 | 5xl0-2 | 480 | ||||||
| ZJ-600 | 600 | 6xl0-2 | 4000 | 2900 | 5.5 | 150 | 150 | 490 |
| ZJP-600 | 5xl0-2 | 503 | ||||||
| ZJ-1200 | 1200 | 6xl0-2 | 3000 | 1450 | 11 | 300 | 300 | 1550 |
| ZJP-1200 | 5xl0-2 | 1580 | ||||||
| ZJ-2500 | 2500 | 5xl0-2 | 3000 | 2900 | 18.5 | 300 | 300 | 1620 |
| 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: | 0.06 PA |
###
| Model | Pumping speed (L/S) | Ultimate pressure (Pa) | Max. pressure difference (Pa) | Motor speed (rpm) | Motor Power (kw) | Size(mm) | Weight (kg) | |
| Inlet | Outlet | |||||||
| ZJ-30 | 30 | 6xl0-2 | 8000 | 2770 | 0.75 | 50 | 40 | 66 |
| ZJP-30 | 5xl0-2 | 75 | ||||||
| ZJ-70 | 70 | 6xl0-2 | 6000 | 2780 | 1.5 | 80 | 50 | 87 |
| ZJP-70 | 5xl0-2 | 100 | ||||||
| ZJ-150 | 150 | 6xl0-2 | 6000 | 2900 | 3 | 100 | 100 | 198 |
| ZJP-150 | 5xl0-2 | 215 | ||||||
| ZJ-300 | 300 | 6xl0-2 | 5000 | 1450 | 4 | 150 | 150 | 490 |
| ZJP-300 | 5xl0-2 | 480 | ||||||
| ZJ-600 | 600 | 6xl0-2 | 4000 | 2900 | 5.5 | 150 | 150 | 490 |
| ZJP-600 | 5xl0-2 | 503 | ||||||
| ZJ-1200 | 1200 | 6xl0-2 | 3000 | 1450 | 11 | 300 | 300 | 1550 |
| ZJP-1200 | 5xl0-2 | 1580 | ||||||
| ZJ-2500 | 2500 | 5xl0-2 | 3000 | 2900 | 18.5 | 300 | 300 | 1620 |
How to check the vacuum pump
A vacuum pump is a machine that draws gas molecules from a volume and maintains a partial vacuum. Its main job is to create a relative vacuum within the stated capabilities. If your vacuum pump isn’t working properly, it may need service. Read on to learn more about the types of vacuum pumps and how to check them. 
Principle of industrial vacuum pump
Industrial vacuum pumps are used in industrial processes that require vacuum. These pumps are designed to generate, improve and maintain vacuum. Learn about the different types of industrial vacuum technology. You can start by reading about the most common types of industrial vacuum pumps. These pumps can be used in a variety of industrial processes from cleaning to manufacturing.
Regardless of the technology used to manufacture these pumps, the basic principles behind their operation are the same. The speed and mass flow of the pump will determine its capacity and suitability. A faster flow rate will minimize the time it takes for the machine to empty. Another important factor to consider is the type of vacuum you need.
A liquid ring vacuum pump is an industrial pump that uses a ring of liquid to form a seal. This type of pump is best suited for applications with high vapor loads and high liquid carry-over. Liquid ring vacuum pumps can be divided into two categories: liquid ring vacuum pumps and scroll vacuum pumps.
Industrial vacuum pumps work by removing gas molecules from a chamber. The partial vacuum created allows material to flow through the void. As more molecules are removed, the pressure in the chamber decreases, releasing energy that can be used for a variety of different purposes.
The most common use of industrial vacuum pumps is for electric lights. In these lamps, a vacuum pump removes the gas, causing the bulb to light up. Energy from the vacuum is also used in aircraft to power instruments. In addition to powering industrial vacuum cleaners, they are used in a variety of other environments.
High-performance industrial vacuum systems require specific materials that can withstand extreme pressure. This means that the materials used in these systems need to be properly checked. They must also be free of organic debris and other contaminants before they can be safely placed in the chamber.
Types of vacuum pumps
There are various types of vacuum pumps. Which one to choose should depend on the purpose of the pump and the degree of vacuum that must be achieved. It is mainly divided into three categories: rough vacuum or low vacuum, high vacuum and ultra-high vacuum. They all have varying degrees of scarcity. The higher the pressure, the fewer molecules per cubic centimeter. This in turn improves vacuum quality.
The vacuum pump is critical to the operation of the vacuum system. These devices are divided into three main categories according to their working pressure range. These pumps have different characteristics and technologies that make them ideal for specific applications. The choice of vacuum pump required for a particular application depends on how much vacuum you need, and how much power you are willing to spend.
Vacuum pumps are used in a variety of industrial and scientific processes. Their main function is to remove gas molecules from the sealed volume, leaving a partial vacuum. There are many different types of vacuum pumps, including rotary piston, liquid ring and scroll vacuum pumps. In addition, turbomolecular pumps are used.
Dry vacuum pumps are more expensive than wet vacuum pumps. Wet vacuum pumps use oil as their lubricating fluid. Different types of oils are used depending on the application. Some wet pumps have additional features, including contaminant filtration. However, wet systems have one major disadvantage: the contact between oil and fluid. To avoid this, oil separators are usually used.
There are several different types of vacuum pumps. The basic type is the positive displacement pump. It operates by expanding the chamber and removing gas molecules. The intake valve draws fluid into the chamber, while the exhaust valve opens when the chamber is at maximum expansion. This cycle repeats several times per second. Positive displacement pumps are often used in multistage vacuum systems. 
Maintenance of vacuum pump
Regular maintenance is very important to ensure the long-term effective use of the vacuum pump. One way to ensure proper pump performance is to change the oil regularly. Pump oil may be contaminated by vapor condensation. To avoid this problem, close the inlet valve for 20 to 30 minutes before applying vacuum. It is also important to install an inlet cold trap to protect the pump from corrosive vapors.
Another way to prolong the life of your vacuum pump is to periodically remove any solvent in it. This step reduces internal corrosion and prevents premature pump failure. During maintenance, be sure to disconnect the power supply to the vacuum pump. After cleaning, store it in a dry and safe place. The pump should also be disposed of in accordance with local regulations.
Vacuum pumps may require frequent oil changes, especially when used in wet chemistry. The standard rule is to change the oil after 3,000 hours of use, but some pumps require more frequent oil changes. It is also important to clean the oil regularly, as dirty or discolored oil can affect the performance of the pump.
Vacuum pumps are often equipped with on-site glass to allow the user to visually check the oil level. Clean oil will appear transparent, while dirty oil will appear darker. Frequent oil changes are essential, as oil changes can help spot various potential problems. Changes in vacuum pump performance or strange noises are also good indicators of a problem.
After an oil change, the vacuum pump should be cleaned thoroughly with a soft cloth and mild degreaser. Oil changes should take less than ten minutes, and they will extend the life of your equipment. Additionally, the outside of the pump should be wiped with a cloth or rag.
The pump must be properly vented to avoid internal corrosion. If possible, place the pump away from hot equipment or rooms. Overheating can reduce the viscosity of the oil and cause premature pump failure. In addition, it can lead to overwork of other expensive scientific equipment. Heat can also cause cracked rubber parts and oil leaks. 
Signs of damage to the vacuum pump
A bad vacuum pump can cause a variety of automotive problems, including poor fuel economy, difficult braking, undercarriage oil leaks, and faulty air conditioning. If any of these problems occur, call a mechanic to check your vehicle’s vacuum pump. You can also check the air conditioner and brake pedal to see if they are working properly.
A loud noise from the pump can also be a symptom of a malfunction. These noises are often caused by the aging and accumulated wear of specific components. If this is the case, the diaphragm, valve plate or seals may need to be replaced. However, if the noise is coming from bearings or other areas, more extensive repairs may be required. Additionally, dust and other contaminants can enter the pump chamber, which can degrade pump performance.
If the vacuum pump won’t start, it could be a blown fuse or a power or voltage problem. Other common causes are flow restrictions or improper installation at the entrance. Also, the vacuum pump may be damaged or the capacitors may be of poor quality. It’s not always easy to tell if a vacuum pump is leaking oil, but a greasy transmission can indicate a vacuum pump failure.
A leaking vacuum pump can also hiss when the car’s engine is running. If you hear it, check the hoses and connections to make sure there are no leaks. A vacuum leak may indicate a faulty vacuum pump, so you need to replace it as soon as possible.
Checking end pressure is easy, but a pressure gauge can also serve as a sign. You can also check for pump vibration by running a short procedure. Excessive vibration can be subtle, but it can greatly affect your process. If you notice excessive pump vibration, you should contact a professional immediately.
Poor pump performance can cause many problems for your company. A bad vacuum pump not only wastes material, it also damages your tools and reputation.
editor by czh 2023-03-23