How to choose vacuum gauge correctly?

The original vacuum gauge was invented by a thin glass tube with mercury filled at one end of Torry. According to the vacuum range and the operating environment, the most commonly used vacuum meters are capacitance diaphragm vacuum meter, thermocouple vacuum meter, hot cathode ionization vacuum meter and cold cathode ionization vacuum meter.
These vacuum meters use different physical phenomena, among which the capacitance diaphragm vacuum meter uses force, thermocouple vacuum meter uses heat conduction, and ionization vacuum meter uses vacuum discharge.
The following points should be noted when vacuum timing is selected:
1： Whether the vacuum meter has enough measurement accuracy within the pressure range required by the equipment;
2： Whether the gas under test will damage the vacuum meter;
3： Whether the vacuum gauge will affect the vacuum environment under test;
4： Whether the pressure measured by vacuum gauge is full pressure or partial pressure, whether it has been calibrated or not is related to the gas type;
5： Whether the vacuum meter can realize continuous measurement, numerical indication and reaction time;
6： The stability, reliability and life of vacuum gauge.

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Application characteristics of DC oil free micro vacuum pump

DC DC oil-free micro vacuum pump, the pump system is integrated, does not use the motor drive, increases the electronic control system, so that the control of the whole vacuum pump completely gets rid of manual operation, realizes the accuracy of liquid transmission, truly realizes the miniaturization and intelligent products, so it is also known as electronic air pump, micro vacuum pump. It is also called micro negative pressure pump, micro gas circulating pump, micro gas pump, micro gas sampling pump, micro air pump, micro air pump, micro air pump, micro air pump and micro air pump.
DC DC oil-free micro vacuum pump adopts a brush motor, with a service life of more than 3000 hours, smaller volume, lighter weight and more reasonable structure. It is mainly used in medicine, cosmetic breast enhancement, medical equipment, gas analysis and sampling, instruments, vacuum system, cupping, vacuum oxygen and other fields. It is maintenance free, and there is no oil and pollution in the pump.

 

Its advantages and disadvantages are summarized as follows
1. The driving mode uses piezoelectric material as power device, which overturns the traditional motor driving.
2. It can accurately transport liquid and be used in liquid quantitative transmission, quantitative control and other fields.
3. The speed of conveying liquid is adjustable.
4. The pump body has its own operation panel, all operations are completed by electronic buttons, full digital setting, equipped with digital display, intuitive and accurate.
5. Small size and light weight.

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How to choose the application scheme of small vacuum pump?

In order to let you better choose and use the vacuum pump, we summarize the following points for attention, so that you can choose the right product. According to the actual use, we should pay attention to these:
1. Whether the vibration of small vacuum pump has influence on the process and environment. If the process is not supported, the pump without vibration should be selected or a series of anti vibration measures should be taken.
2. Understand the composition of the extracted gas, whether there are particles, dust and corrosivity in the gas. When choosing the vacuum pump, we need to know the gas composition, and we need to choose the corresponding pump for the gas to be pumped. If the gas contains steam, particles and corrosive gas, it is necessary to consider the installation of auxiliary equipment on the inlet pipeline of the pump.
3. Under its working pressure, the small vacuum pump can discharge all the gas produced in the process of vacuum equipment.
4. Correct combination of vacuum pump. Sometimes one kind of pump can't meet the requirement of pumping. Because vacuum pump has selective pumping, it needs several pump combinations to complement each other to meet the requirement of pumping. If the titanium sublimation pump has a high pumping speed for hydrogen, but it can't pump helium, and the triode sputtering ion pump (or the bipolar asymmetric cathode sputtering ion pump) has a certain pumping speed for argon, the combination of the two will make the vacuum device get the corresponding vacuum degree.
5. Requirements of small vacuum equipment for oil pollution. If the equipment clearly requires no oil, all kinds of no oil pump should be selected. If the requirements are not strict, oil pump can be selected, plus some anti oil pollution measures.
6. Choose the working point of small vacuum pump correctly. Each pump has a certain working pressure range. Therefore, the working point of the pump should be selected in this range, rather than long-term operation at 25 ~ 30mmhg.
7. How does the oil vapor discharged from the small vacuum pump affect the environment. If the environment does not allow pollution, you can choose a small oil-free vacuum pump, or the oil vapor to the outside.
8. The working pressure of small vacuum pump should meet the limit vacuum and working pressure requirements of vacuum equipment. For example: a vacuum drying process requires a working vacuum of 10mmhg, and the limit vacuum of the selected vacuum pump should be at least 2mmhg, preferably 1mmhg. Generally, the limit vacuum of pump is half to one order of magnitude higher than that of vacuum equipment.
In addition:
At present, there are few domestic manufacturers producing oil-free vacuum pumps. Basically, they can only produce rotary vane vacuum pump products that must be added with vacuum oil. The market is basically imported oil-free vacuum pump products. Taiguan's oil-free rotary vane vacuum pump is manufactured by using Taiwan's oil-free rotary vane vacuum pump technology. It has the advantages of simple structure, easy operation, convenient maintenance, low cost and low cost It will not pollute the environment. The two series oil-free vacuum pumps are durable. Good performance, is a vacuum, compression, dual-purpose vacuum pump, is a very wide range of applications to obtain the basic vacuum equipment.

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Does a small vacuum pump really need no maintenance?

Structure:
Head cover, valve plate, cylinder, casing, piston ring, connecting rod assembly, cooling fan, fan cover, shock proof foot
Performance advantages:
1. vacuum degree is up to -98kpa, leading the industry.
2. it is equipped with rubber damping foot pad, which makes the operation more stable.
3.100% oil free and maintenance free.
4. the silence and noise are controlled at about 55 dB.
5. small volume and beautiful appearance.
6. overload protector is installed, and it will not burn out due to overload.
Daily maintenance:
1. Clean the outer part of the enclosure. Please use a dry and soft cloth to clean the dust and dirt outside the enclosure when the power supply is cut off, and clean it at least once a month.
2. Cleaning of air inlet filter and cleaning of filter cotton are very important. It directly affects the flow and life of vacuum pump. Clean it at least once a month. Please screw off the appliance, remove the end cover of the appliance, take out the filter cotton, rinse it with clean water, dry it and install it for use. If it is not possible to clean, replace the filter cotton.
3. Please tighten the fixing bolts of the base and shock absorption foot when using, and try to put them in a place where the air is clean.
4. When the vacuum pump is working, it is strictly forbidden to touch any components on the machine.
5. This product is oil-free vacuum pump, it is forbidden to add oil and lubrication.
6. If the product is not used for a long time, please clean it and put it in a place where it is ventilated and dry.

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How to improve the quality of Roots vacuum pump

 Roots vacuum pump is recognized by the majority of users for its fast start, low power consumption, low operation and maintenance costs, and insensitivity to a small amount of steam and dust contained in the extracted gas. In order to better use the roots vacuum pump, let’s introduce the methods to improve the quality of Roots vacuum pump products.

1. Strict management, promote the standardization mode of the overall performance of Roots vacuum pump, drive the high performance of products with higher management mode, reflect the reasonable management mode, and increase the multi-faceted development of products.
2. The improvement of product inspection is helpful to promote the development of Roots vacuum pump. It can improve the overall performance of the product, increase the use strength, improve the practical application standard of the product with strong effect, and give full play to the application of various abilities in the production process, so as to improve the use effect and improve the product ability from different application angles, Expand its advantages in all aspects of development, and constantly accelerate the speed of development.
Through the quality inspection of Roots vacuum pump, for the application of the product, it continuously drives the ability of the product to promote, and provides favorable conditions for the future development, so as to reflect the effectiveness of all aspects of development, expand the integrity of Roots vacuum pump, and improve the ability.

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How to solve the automatic trip of vacuum unit

 In the production process of using vacuum unit, how to solve the problem of automatic trip of vacuum unit? First of all, we need to understand the use of the vacuum unit, and make a preliminary diagnosis to determine the cause of the automatic trip of the vacuum unit. Vacuum unit automatic trip reason 1: vacuum unit motor overload work Roots vacuum pump is a booster pump, which can not be used alone, because it needs the combination of the front pump and the vacuum unit. When the vacuum does not reach a certain degree, the motor will overload after the roots pump is started, and the automatic trip will occur at this time. The second reason for the automatic trip of the vacuum unit: foreign matters and sundries fall into the pump cavity or pipe of the vacuum unit The reason for the automatic trip of the vacuum unit is whether there are impurities, welding slag and small particles in the pipeline of the vacuum unit into the pump chamber. The second reason for the automatic trip of the vacuum unit is that the vacuum oil of the vacuum unit is damaged When the performance of the vacuum pump oil of the vacuum unit is damaged, the vacuum unit will trip automatically. If the roots water ring vacuum unit does not work according to the corresponding start-up and stop sequence or under the condition of automatic power failure, the working fluid of the water ring vacuum pump will return to the cavity of the roots pump under the influence of negative pressure, which will damage the performance of the vacuum pump oil and cause the roots pump to overload and trip when it exceeds the rated current.

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Judgment condition and exhaust condition of micro vacuum pump

Because of its own advantages, micro vacuum pump is widely used in many industries. In the process of using, the volume of the equipment is very small. The micro vacuum pump will not appear oil in the process of using, so it is very environmentally friendly in the process of using.
Now there are many specifications of micro vacuum pump. In the process of selection, the manufacturer first needs to make clear the purpose of the equipment. In the process of using the equipment, if it does not need to rely on its artificial water before pumping, so that the pump can pump the low water more effectively, otherwise it will be unable to pump and damage.
The advantage of the micro vacuum pump in the process of using is that the equipment directly vacuumizes when it does not contact with water. After the vacuum is formed in the equipment, it needs to rely on the air pressure to pump up the water pressure, and then it starts to pump water. In the process of using, it may directly vacuumize because there is no water in the pump. After the vacuum is formed, it depends on the air pressure to pump up the water pressure, And then we start pumping.
Micro vacuum pump in the process of pumping resistance, and then according to its judgment conditions to narrow the scope of selection, but in the process of using, we need to consider the problem of the exhaust end of the equipment in time, so as to better select the scope of its choice.
In the actual application process of micro vacuum pump, the exhaust condition faced by the equipment is different. One is that the exhaust is relatively smooth and directly to the atmosphere. The other is that the exhaust resistance is relatively large, such as valves, large damping sensors and other parts on the exhaust pipeline.
In the process of design and manufacture of modern micro vacuum pump, different exhaust conditions need to be treated differently. The exhaust port of the equipment allows a large resistance value. Such a parameter is to calibrate the exhaust capacity of the pump. In this way, strict technical means can be used to determine its type selection.

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When the filter element of vacuum pump is blocked and damaged, what should be done?

All products have their own service life, in the use of the process will inevitably produce a variety of problems, vacuum pump filter plugging and resistance loss often plagued consumers. Today, we have summed up a few tips to solve this problem.
1、 Clogging
An effective way to solve the blockage is to install the vacuum pump exhaust filter element. When the vacuum pump filter element is working, it will filter some impurities in water or oil. After installing the vacuum pump exhaust filter element, it will absorb the impurities in water and oil. This can ensure the Edward vacuum pump to work in a clean environment and avoid the blockage of the vacuum pump.
In addition, in addition to the blockage problem, the filter element of the vacuum pump also needs routine maintenance. The staff should listen carefully to the noise of the vacuum pump, check whether there are impurities in the filter element of the vacuum pump, and check whether there are oil stains at the exhaust port. If there is any abnormal situation, the staff should immediately ask the master to repair or replace the parts.
2、 Resistance loss
To solve the problem, we must find the root of the problem. We must find out the cause of the resistance loss, what causes the filter element resistance loss, so that we can find every method corresponding to each cause.
There are usually two reasons. One is the change of geometry. In this case, the filter element should be removed to see the degree of deformation. If it is slightly deformed, it can be slightly repaired and reused. If it is severely deformed, it should not be used any more, otherwise it will aggravate the damage of the vacuum pump.
Another reason is that high temperature oxidation and water droplet atomization make impurity particles exist in the filter element of vacuum pump, leading to filter element resistance loss. Some of them are left behind during cleaning. At this time, it is necessary to thoroughly clean the filter element, first use a brush or blower to get out the impurity particles, and then use the cleaning agent to clean up, no more impurities left.
The above is the treatment method when the filter element of the vacuum pump is blocked and damaged. We must carefully observe its operation, use and maintain it correctly, ensure its normal work, and extend its service life as far as possible.

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Classification of CNG compressors

The compressor equipment of CNG filling station is different according to its service environment,
It can be divided into three categories: CNG master station compressor, CNG standard station compressor and CNG sub station compressor.
CNG master station is built in the place where there are natural gas pipelines passing through, and it takes gas directly from natural gas pipelines.
The compressor of CNG sub station inputs natural gas through pipeline, and after pressurization in the station, it is directly or stored in fixed gas storage bottle group (well) to fill CNG vehicle with compressed natural gas.
The purpose of CNG standard station compressor is to import natural gas through pipeline, and then directly or store it into fixed gas storage bottle group (well) after pressurization in the station to fill CNG vehicle with compressed natural gas.
These are the three classifications of CNG compressors.

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The problem of holding shaft of water ring vacuum pump

Another situation of water ring vacuum pump is analyzed. Maybe it's the first time to hear the word about the problem of holding shaft. At first, I don't understand what it means. Is the vacuum pump not working? There are many reasons for this phenomenon. The following is a systematic analysis of the reasons for this situation, which may be helpful for future use.
The problem of water ring vacuum pump shaft holding mainly starts from the bearing components. The specific reasons are as follows: there are differences in the quality of the bearing itself, or the wear and aging caused by long-time operation. In the assembly process, there is a big gap between the positioning and design requirements of the bearing, the positioning is not accurate, the selection of each component is unreasonable, and the quality of lubricating oil is also related to this situation, If the overall vibration of the pump is too large, it is also caused by this reason.
The various reasons described above are the problems that lead to the phenomenon of water ring vacuum pump holding shaft. The user can judge which component is responsible according to these conditions, so that remedial measures can be made in a short time without hindering the normal production operation. If you still don't understand this aspect, you can contact our company's after-sales department in time for guidance, Thank you for choosing our products.

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Present situation and Prospect of dry screw vacuum pump

At present, the development of various vacuum pumps is more and more affected by vacuum applications. The general vacuum system can not meet the requirements of clean and oil-free corrosion resistance. Therefore, in recent years, the market demand for dry vacuum pumps is very large, and the vacuum products have been upgraded. A large number of oil-free vacuum systems have been replaced by oil-free and clean vacuum systems.
Almost every large vacuum company abroad produces various types of dry vacuum pumps. Screw vacuum pump is a kind of non-contact dry pump, which appeared in the early 1990s. It occupies the market with the advantages of wide pumping speed range, simple and compact structure, non friction of pumping cavity components, long service life, low energy consumption and no oil pollution. However, most of its manufacturing technology is mastered by foreign countries, and China is still in its infancy. The market has a strong demand for dry pump
At present, the development of various vacuum pumps is more and more affected by vacuum applications. The general vacuum system can not meet the requirements of clean and oil-free corrosion resistance. Therefore, in recent years, the market demand for dry vacuum pumps is very large, and the vacuum products have been upgraded. A large number of oil-free vacuum systems have been replaced by oil-free and clean vacuum systems.
Almost every large vacuum company abroad produces various types of dry vacuum pumps. Screw vacuum pump is a kind of non-contact dry pump, which appeared in the early 1990s. It occupies the market with the advantages of wide pumping speed range, simple and compact structure, non friction of pumping cavity components, long service life, low energy consumption and no oil pollution. However, most of its manufacturing technology is mastered by foreign countries, and China is still in its infancy. The market has a strong demand for dry pump
Present situation of dry vacuum pump
Due to its superior performance, dry screw vacuum pump has become the preferred vacuum equipment in microelectronics, semiconductor, pharmaceutical, precision processing and other industries in Europe, America and Japan. On the basis of screw compressor, Japan has developed the multi head rotor line of vacuum pump and put it into the market for a long time. Several German vacuum equipment companies have gradually developed equal pitch and variable pitch rotor profiles, and have done a lot of research on rotor and body cooling.

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