vacuum equipment

Different vacuum systems require different degrees of vacuum. Therefore, a set of vacuum units must be used to complete, that is, the vacuum pumps working in different pressure ranges are connected in series. The vacuum pump on the high-vacuum side can achieve the vacuum required by the system, while the vacuum pump on the low-vacuum side is directly exhausted to the atmosphere. Obviously, the simplest vacuum unit is a straight-line vacuum pump. However, high-vacuum systems generally require three-stage units, and medium-vacuum systems generally require two-stage units. A high vacuum pump and a low vacuum pump are difficult to form an effective high vacuum unit. There are several reasons for this. Traffic continuity is one of them. High-vacuum pumps have the limitation of the pressure resistance of the fore stage, that is, the fore stage is higher than a certain pressure, the pump cannot work normally. When the current stage pump reaches this critical pressure, the pump...

During the operation of Roots vacuum unit, friction may be caused by improper operation of workers, which is not good for our machine. In order to avoid this phenomenon, we will take certain measures to solve it. What are the specific steps? When the wear size of the transmission part is relatively small, the polymer composite repair material can be used on site without disassembly and repair, which not only avoids machining, but also does not have the thermal stress and heat effect of repair welding, and the repair thickness is not limited. At the same time, the wear resistance of the product and the fallback of the metal material are not provided, which ensures 100% contact and coordination of the repair part and reduces the impact vibration of the equipment, Avoid the possibility of wear, and greatly extend the service life of equipment components (including bearings), save a lot of downtime for enterprises, and create huge economic value. Its suction port is connecte...

Roots vacuum unit has a kind of filtering function in use, which is inseparable from the role of filter element. In order to better realize the filtering function and improve the efficiency of the equipment, it is also necessary to regularly maintain the filter element. Refer to the following for specific maintenance methods. The filter element of Roots vacuum unit shall be inspected frequently to avoid failure affecting the whole equipment. After the filter element is used for a period of time, it is strongly recommended to replace it. It can't be used for any other purpose, so that not only the good filtering effect can't be achieved, but also the operation of the machine will be affected. Generally, before opening roots vacuum unit, we will check whether the parts are complete and whether there is any fault, so as to avoid problems in use and affect the working efficiency. For filter element, we can open the machine to see the driving current after all the par...

The influence of the position of suction and exhaust hole on pump performance of liquid ring vacuum pump was studied. Through technical renovation project, the concept of critical compression ratio of liquid ring pump and its influence on pump performance are theoretically expounded, and the relationship between suction and exhaust hole area and opening position of liquid ring pump and compression ratio is analyzed. When the operating condition of the pump exceeds the critical compression ratio, how to reduce the flow loss of the pump to the minimum by modifying the internal structure and how to achieve high performance of the pump have important reference significance for future project application and system transformation. liquid ring pump as a varactor type gas conveying equipment, gas can not only as a vacuum pump suction as well as make the system get the negative pressure, and can be used as compressor compressed gas so as to make the system get positive pressure...

The temperature rise of Roots vacuum unit refers to the difference between the maximum temperature and the room temperature measured at all parts of the pump surface under the condition of stable operation of limit vacuum or rated vacuum (direct discharge atmosphere roots vacuum unit). There is no limit to the types of thermometers used to measure temperature rise, but they should have a measurement accuracy of ± 1 ℃. When marking the temperature rise, the room temperature at that time and the cooling conditions of the pump, including the cooling method, shall be indicated at the same time. If it is water-cooled, the temperature of water in and out shall be indicated. The outlet pressure of Roots vacuum unit refers to the pressure measured near the exhaust port under the condition of stable operation of Roots vacuum unit, corresponding to a certain inlet pressure value. The test of the outlet pressure can be carried out at the same time with the measurement of the pumping ...

What is the performance evaluation index of imported roots vacuum pump? This article will be elaborated below. Roots pump pumping speed and zero flow compression ratio from the surface, is two completely different concepts, it seems to be unrelated binomial performance indicators. But in fact, they are not only the performance indicators of roots pumping capacity, but also have a very close relationship with each other. The following analysis of roots vacuum pump pumping speed and zero flow compression ratio. Generally roots pump must match with the front pump to work, so its pumping speed is closely related to the front pump. Roots pump and liquid ring pump, vane pump, slide valve pump, piston pump can be composed of a variety of vacuum units, and according to different needs, the use of a variety of ratio, so that the vacuum unit has a different limit pressure and pumping speed. Therefore, the so-called roots pumping speed is actually the pumping speed of the vacuum u...

If the oil in the vacuum pump is dirty, can the frozen oil replace the frozen oil can replace the vacuum pump oil? About this question, puno manufacturer of vacuum pump oil is like this explanation, first we must make clear what is in common between them, and what's the different between the two places, with these two questions, small make up on this article is to analyze the related questions of frozen oil can replace the vacuum pump oil, hope to inspire you. Can refrigerated oil replace vacuum pump oil? Punok vacuum pump oil has its unique substitution principle: Try to use the same type of oil or similar performance, similar type of additives instead. High quality to replace low, that is to choose high quality first gear oil substitute, so that the use of equipment lubrication more reliable, improve the efficiency of equipment. At the same time, but also can extend the use of life, economically cost-effective. The viscosity should be similar, the viscosity of su...

Magnetic driven pump (magnetic pump for short) is a new product which applies the working principle of permanent magnet coupling to centrifugal pump. Reasonable design, advanced technology, full seal, no leakage, no corrosion. Magnetic pump is widely used in petroleum, chemical, pharmaceutical, electroplating, environmental protection, water treatment, film and television printing departments to pump flammable, explosive, toxic, valuable liquid. It has extensive sealing, no leakage and corrosion resistance. It is the ideal pump to create a leak-free, pollution-free civilized workshop and civilized factory. The following should be considered when installing the magnetic pump: 1. Place the equipment on the foundation, place a pair of wedge pads between the bottom plate and the foundation, and then adjust the pump level by adjusting the wedge pads. After adjustment, tighten the anchor bolt. 2. Check the pump and motor before installation. All parts should be intact. There...

Vacuum pump maintenance manufacturer analysis of the vacuum pump current fluctuations Recently, some customers have reported to our company that the current drop often occurs in the operation of vacuum pump, and the current drop value reaches about 30A, and the drop time is very short, only about 1~3s. With the decrease of the vacuum pump current, the unit vacuum also decreases to different degrees, and the maximum vacuum can decrease to 5kPa. The customer service personnel of our company immediately reported this problem to the technical personnel. After many discussions and studies, the vacuum pump maintenance manufacturer analyzed the causes of the current fluctuation of the vacuum pump caused by the following contents, and provided corresponding solutions. According to the observed phenomenon, and when manually controlling the relay to switch the valve, it was found that water mist was discharged from the vent of the reversing valve, and the switch of the two doors ...

Water ring vacuum pump equipment may have some problems after a period of use. For example, the water ring vacuum pump pump end cover in a long time after the use, may appear the phenomenon of corrosion, so the water ring vacuum pump pump end cover after corrosion how to repair? (1) cleaning The water ring vacuum pump has been corroded to clean the surface and corrosion layer, with the appropriate amount of propionone to clean the surface until there is no residue (2) seasoning The condiments used for repairing the water ring vacuum pump should be mixed with the repairing materials in a certain proportion, stirring evenly until there is no color difference and the color is even (3) paint First in the surface of the corrosion area coated with a thin layer of seasoning, to ensure that all cover in the need to repair the site, and then paint evenly coated to repair the site, and layer by layer thickening, to maintain appropriate thickness, should not be too thick or too...

Vacuum pump maintenance: vacuum pump exhaust valve repair steps For the normal operation of the vacuum pump, the vacuum pump exhaust valve working normally or not is one of the factors that will affect its performance, for it is very important. Vacuum pump exhaust valve work is not normal, will greatly affect the vacuum degree. So the vacuum pump maintenance, exhaust valve is very important. Today, dongguan punok vacuum technology co., LTD. Sorted out the "imported vacuum pump maintenance: vacuum pump exhaust valve repair steps". Valves are used to change the direction or size of the airflow or to block and connect the vacuum system, gas delivery system components, widely used in semiconductor equipment in all aspects, including: 1 switch gas. 2. Control the air flow and adjust the vacuum. 3. Quantitative inflation. The exhaust valve is a valve for separating exhaust gas from the turbine in a turbocharged engine system. Exhaust gas separation reduces the turbi...

Water ring vacuum pump inlet butterfly valve switch failure is a more complex fault, usually in the occurrence of a sharp decline in the vacuum, you can consider the inlet butterfly valve switch failure, first to understand the causes of a water ring vacuum pump switch failure: When one water ring vacuum pump is switched to another standby water ring vacuum pump, the vacuum will drop sharply and cannot be recovered. This situation is likely to be water ring vacuum pump inlet butterfly valve closed, and simply can not move, resulting in two water ring vacuum pump gas, vacuum decreased. The reason for the failure is that the electrical control switch of the butterfly valve is not sensitive enough to close the butterfly valve Butterfly valve is prone to another kind of failure is the butterfly valve can not open, this situation is generally because the water ring vacuum pump butterfly valve can only be opened when the pressure difference between front and rear up to 30mbar...

Method of cleaning the cavity of water ring vacuum pump The abdominal cavity cleaning of water ring vacuum pump is a special aspect of water ring pump maintenance. Because the water ring vacuum pump in a long time to use, the abdominal cavity will inevitably enter some debris, with the increase of time, the dirt covered in the abdominal cavity, the performance of the water ring vacuum pump has a great adverse impact. Show you how to clean the inside of the abdominal cavity in time: For the water ring vacuum pump, not only to keep the appearance of clean, but also to keep the internal clean. To maintain the stable performance of the water ring vacuum pump, the use of a long time, the daily maintenance work is crucial, only the double care of the water ring vacuum pump to normal operation. Because the water ring vacuum pump for a long time internal may have scale or other substances, only clean water treatment is far from enough, in the cleaning process, must thoroughly r...

Screw vacuum pump long - term use of the process may encounter a problem: oil return. In addition to the screw vacuum pump without anti-oil return device, this phenomenon is more obvious when the screw vacuum pump stopped working, timely measures can reduce the loss The placement of the screw vacuum pump has nothing to do with the return of oil. It is the basic principle to prevent the return of oil to cut off the oil line when stopping the pump, eliminate the negative pressure in the pump chamber of the screw vacuum pump, reduce the liquid level difference and reduce the amount of returned oil: Screw vacuum pump shaft seal and static seal parts to be reliable, timely replacement Separate the oil near the exhaust valve of the screw vacuum pump from the rest of the oil, the oil level is only slightly higher than the partition wall The valve seat plane of the screw vacuum pump should be flat and the valve plate should be elastic The check valve structure is set so that...

Users who have used water ring vacuum pump know that the vacuum degree of the machine should be within a certain range of values during the use of the machine, and the vacuum degree has a great relationship with the suction capacity, too high or too low suction capacity will have a bad impact on the equipment. However, sometimes we will find that the suction capacity of the machine is slowly decreasing, which directly causes the change of vacuum degree, thus affecting the normal operation efficiency of the machine. Then why does the water ring vacuum pump appear the phenomenon that the suction ability decreases? Today xiaobian with you to understand the specific. 1. If the suction area of the water ring vacuum pump is in the state of negative pressure, and the temperature of the working fluid is higher than the saturation temperature corresponding to the negative pressure of the suction area, the water will vaporize, making the vacuum degree in the pump lower and directl...

Oil-free vacuum pump is a kind of mechanical vacuum pump that can operate without any oil as lubrication, which is composed of stator, rotor, rotary disc, cylinder body, motor and other main parts. Oil-free vacuum pump as a kind of mainly composed of metal mechanical equipment, so has most of the characteristics of the metal, such as in cold conditions will increase brittleness, easy to break, so in winter Germany oil-free vacuum pump anti-freezing measures are essential. Compared with the oil pump, the oil-free vacuum pump has low vacuum degree, small air volume, small size, easy to install, easy to maintain, easy to move, no smoke, no pollution of the environment, especially in the laboratory with higher requirements. The pump can be used for air conditioning, refrigeration equipment repair, medical equipment suction device, printing machinery, vacuum packaging, vacuum blister, physical and chemical experiments and need a vacuum environment for small devices and other...

Water ring vacuum pump is a new generation product developed by our company. It has the characteristics of strong corrosion resistance, high limit vacuum degree and large exhaust capacity. So why does the vacuum drop in summer when the water ring vacuum pump is used? 1. Under working conditions in summer, water ring vacuum pump adopts circulating water to cool working water. High temperature of circulating water will lead to the decrease of suction capacity and efficiency of water ring vacuum pump. Through analysis, the working water of the water ring vacuum pump is cooled by the refrigerated water of the central air conditioner of the power plant 2. Other conditions being unchanged, the lower the working water temperature, the smaller the influence on the vacuum of the water ring vacuum pump, while the higher the working water temperature, the greater the influence on the vacuum 3. For the double back-pressure condenser, due to the low pressure of the condenser corre...

Vacuum pump maintenance manufacturers talk about the vacuum pump to reduce friction method text: today, vacuum pump maintenance manufacturers here to introduce the vacuum pump to reduce friction method. The vacuum pump can remove the dry gas in the sealed container of the constant temperature and humidity test chamber. But it is not suitable for removing gases that contain too much oxygen, are corrosive to metals, react chemically with pumped oil, or contain particulate dust. Vacuum pump is one of the most basic vacuum acquisition equipment in vacuum technology. Vacuum pump for small and medium-sized pump. Rotary vane pump has a single stage and two stages. The so-called two-stage, is in the structure of two single-stage pump series. Generally made of two - stage, in order to obtain a higher vacuum degree. The vacuum pump body is equipped with an appropriate amount of water as the working fluid. When the impeller rotates clockwise as shown in the figure, the water is t...

Screw vacuum pump in use, sometimes there will be insufficient compression, hangzhou xinanjiang industrial pump to solve the problem of insufficient compression of screw vacuum pump: 1, in the screw vacuum pump, the auxiliary exhaust valve is a special structure, the general use of rubber ball valve, its role is to solve the screw vacuum pump in the process of running the phenomenon of over compression and insufficient compression. The two phenomena can cause excessive power consumption, because there is no direct water ring vacuum pump exhaust valve, and exhaust pressure is always fixed, water ring vacuum pump compression ratio't decided to port of termination of the starting position of the location and vent, the two position fixed, so don't meet the needs of the suction pressure changes 2, in order to solve the problem of screw vacuum pump, generally set rubber ball valve at the bottom of the exhaust port, so that when the screw vacuum pump pump chamber reac...

Application of vane vacuum pump in variable frequency air conditioning I believe that when it comes to variable frequency air conditioning, the first thing you think of is its energy saving characteristics, and there is a process before installation of variable frequency air conditioning, that is to use rotary vacuum pump to vacuum, which is often ignored by everyone. So, does frequency conversion air conditioning need to vacuum when installing? What is the necessary effect that pumping vacuum is having to frequency conversion air conditioning itself? Today, small series to introduce the rotary vacuum pump vacuum role. 1. Does the rotary vane vacuum pum p need to be used to vacuum the air conditioner before installation? Vacuum pumping by rotary vane vacuum pump is an indispensable procedure in the installation of fvac and the most critical step to ensure high performance. But now the installation team's professional quality uneven, can not guarantee that everyone...