2019年10月10日星期四

Exhaust Pressure of Liquid Ring Vacuum Pump

Exhaust Pressure of Liquid Ring Vacuum Pump

What is the exhaust pressure of liquid ring vacuum pump?

When the liquid ring vacuum pump works, air will be continuously discharged from the pump body to form the vacuum required by the work at the suction port. That is to say, the exhaust pressure is another major factor affecting the operation efficiency of the liquid ring vacuum pump.

Exhaust pressure will have a great impact on the suction capacity and shaft operation power consumption of liquid ring vacuum pump. When the liquid ring vacuum pump system is in operation, the larger the exhaust pressure, the smaller the suction capacity of the liquid ring vacuum pump, and the greater the power consumption of the corresponding shaft. On the contrary, the smaller the exhaust pressure of the system is, the larger the suction capacity of the liquid ring vacuum pump will be, and the smaller the power consumption of the corresponding shaft will be.

Therefore, in the actual operation and maintenance process, the exhaust pressure data of the liquid-ring vacuum pump system should be observed in real time. When abnormal exhaust pressure data occur, corresponding measures should be taken immediately to update the entire vacuum system, so that the exhaust pressure of the vacuum system can be maintained in the range recommended by the national standard or manufacturer for a long time, so as to ensure that the liquid-ring vacuum pump is always at its peak. Under the optimum operating conditions, the overall operating mechanical efficiency of the liquid ring vacuum pump can be effectively improved.

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Pipeline Installation of Liquid Ring Vacuum Pump

What problems should we pay attention to when installing the pipeline of the liquid ring vacuum pump?

(1) All pipelines of liquid ring vacuum pump should be checked for sealing before installation, and the internal iron chips, rust and oil stains should be cleaned up.

(2) Reliable sealing gaskets, especially vacuum pipelines, should be used at the flange joints of pipelines, and the sealing requirements should be stricter.

(3) The intake pipeline is connected with the inlet of the liquid ring vacuum pump, and the exhaust pipeline is connected with the outlet of the separator water tank.

(4) Gate valves should be installed on the intake pipe near the liquid ring vacuum pump to prevent the water in the pump from flowing down to the intake pipe under the pressure of the exhaust pipe when the pump stops.

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2019年10月9日星期三

Gas pumping requirements for liquid ring vacuum pumps

Gas pumping requirements for liquid ring vacuum pumps

Presumably you have a certain understanding of all aspects of the liquid ring vacuum pump, and there are some more in-depth issues that need to be discussed with you. Today's content is about the pumping requirements of the liquid ring vacuum pump, I hope you can take a serious look at it.


Because vacuum pumps have selective pumping, sometimes one pump can not meet the requirements of pumping. It needs several pumps to be combined to complement each other in order to meet the requirements of pumping. For example, the titanium sublimation pump has a high pumping speed for hydrogen, but it can not pump helium, while the tripolar sputtering ion pump (or the bipolar asymmetric cathode sputtering ion pump) has a certain pumping speed for argon. If the two pumps are combined, the vacuum device will get a better vacuum degree. In addition, some vacuum pumps can not work at atmospheric pressure, need pre-vacuum; some vacuum pumps outlet pressure is lower than atmospheric pressure, need the front pump, so they need to be combined to use.

Although the liquid ring vacuum pump can be selectively pumped, it must meet certain requirements when pumping. Therefore, we need our staff to pay special attention to this work.

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Freeze Drying Technology of Water Ring Vacuum Pump

Freeze Drying Technology of Water Ring Vacuum Pump

Speaking of freeze-drying, you may first think of food, such as seafood freezing, of course, there are condiments, fruits and so on. This technology basically uses the special advantages of water ring vacuum pump, changes the characteristics of food itself, preserves the nutrition of food after vacuum drying, and carries out market sales in the form of convenient transportation. So what is the freeze-drying technology of this equipment?

Because in a long time, for the processing of food, especially seafood, manual operation is basically used, depending on seasonal changes, the efficiency is very low, but after using this technology of water ring vacuum pump, not only the production efficiency has been improved several times, but also the quality of production has been guaranteed.


This freeze-drying technology of water ring vacuum pump is not only applied to food processing, but also to some vaccines and medicines produced by pharmaceutical factories. It is also used to preserve organisms in the medical industry, which achieves very good results and has become a more practical vacuum equipment in recent years. This process is to freeze the material before vacuum, when the material has been frozen into ice water sublimation after removal, so the freeze-dried material will remain in its original state. This technology has been developed in China for decades, and its design is quite mature, which has made great contributions to many industries.

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Maintenance Method of Water Ring Vacuum Pump

If the water ring vacuum pump is not well maintained, the wear of parts will occur after a period of time, which will lead to the serious failure of the equipment to stop running suddenly in use. The maintenance methods used by different equipment are also different. Choosing the appropriate maintenance mode of water-ring vacuum pump will guarantee the equipment, or it will do no work.

Because with the development of machinery industry society, the field of mechanical application is more and more extensive, and the development of water ring vacuum pump is also faster and faster. Even in excellent vacuum pump, it also needs to be maintained and maintained.

1. Always pay attention to the cleanliness of oil level and oil. The new pump works 150 hours to change oil, and every 2 to 3 months thereafter. If the operating conditions are not good, the oil change time can be shortened when the vacuum drops.

2. Water ring vacuum pump and pump room should be kept dry and clean.

3. Always pay attention to the temperature of cooling water and oil, which should not exceed 85 C, the inlet temperature of cooling water should not exceed 30 C, the outlet temperature should not exceed 5 C, and the water quality should be kept clean.

4. Check the loosening of the water ring vacuum pump pipeline and joint regularly, and rotate the water ring vacuum pump by hand to see if the water ring vacuum pump is flexible.

5. Add bearing lubricating oil to the bearing body, observe the oil level should be at the center line of the oil mark, and the lubricating oil should be replaced or supplemented in time.
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2019年10月8日星期二

Screw Vacuum Pump Advantages

Screw Vacuum Pump Advantages

The advantage is a very good summary of the performance of a device. Understanding the advantages of screw vacuum pump can ensure the efficiency of the equipment. After all, knowing that it can be better used in operation, and the effect of using will be very good, of course, without understanding the efficiency will not be so good.

Screw vacuum pump is a kind of suction and exhaust equipment which uses a pair of screw to make synchronous high-speed reverse rotation in the pump shell. It is widely used in pharmaceutical, chemical, semiconductor and other enterprises which require higher clean vacuum.

The two screw rods of screw vacuum pump are corrected by fine dynamic balance, supported by bearings and installed in the pump housing. There is a certain gap between the screw and the screw. Therefore, when the screw vacuum pump works, there is no friction between them, the operation is stable, the noise is low, and the working chamber does not need lubricating oil. Therefore, screw vacuum pump can extract gas containing a large amount of steam and a small amount of dust, which has the advantages of higher limit vacuum, lower power consumption, energy saving and maintenance-free.


Secondly, compared with the oil-sealed mechanical vacuum pump, the condensable substance will not stay in the pump, no oil vapor and oil mist emissions, and is very environmentally friendly. Therefore, the screw vacuum pump is a renewal product of the oil-sealed vacuum pump, and a single screw vacuum pump can continuously discharge the atmosphere directly. The vacuum system can be greatly simplified by pumping from the atmosphere to less than 5Pa.

The working chamber of the screw vacuum pump and the surface of the screw vacuum pump have anti-corrosion coating, which can adapt to harsh working conditions, and after high-precision dynamic balance, it can run at high speed, work smoothly, and the whole body is small.


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How to Choose the Vacuum Pump with Liquid Ring Correctly

How to Choose the Vacuum Pump with Liquid Ring Correctly

The liquid ring vacuum pump is an important equipment in industrial production. Its selection is directly related to the efficiency of operation. Therefore, it is necessary to select the pump correctly. So, how do we choose the liquid ring vacuum pump?

1. Type determination: The type of liquid ring vacuum pump is mainly determined by the gas volume, vacuum degree or exhaust pressure required for work. When working, we should pay attention to the following two aspects:

1. Operate in the high efficiency area as far as possible, that is, in the critical vacuum or critical exhaust pressure area.


2. Operating near the maximum vacuum or exhaust pressure should be avoided. Operating in this area is not only very inefficient, but also very unstable and prone to vibration and noise. For vacuum pumps with high vacuum, cavitation often occurs when they operate in this area. The obvious sign of this phenomenon is that there is noise and vibration in the pump.

2. Choose vacuum pump according to the volume of air required by the system: After the type of pump is initially selected, the type of vacuum pump should be selected according to the volume of air required by the system.

When choosing and purchasing, we can determine the type and type of liquid ring vacuum pump according to the required gas volume, vacuum degree or exhaust pressure, so as to ensure that the selected pump can meet the actual needs and run efficiently in operation.

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