Vacuum pump and water ring vacuum pump overview

Vacuum pump and water ring vacuum pump Overview: Vacuum pump It can be used alone, can also be used as booster pump, diffusion pump, molecular pump foreline pump, maintenance pump, titanium pump pre-pumping. Can be used for electric vacuum container manufacturing, vacuum welding, printing, plastic, refrigeration equipment maintenance and instrumentation equipment and laboratories. Widely used in food, scientific research, medical, electronics, chemical, pharmaceutical, tertiary institutions and other departments. Vacuum pump Vacuum pump using mechanical, physical, chemical, physical and chemical methods such as the container to pump gas to obtain and maintain the vacuum device. Vacuum pumps and other equipment (such as vacuum vessels, vacuum valves, vacuum measuring instruments, connecting pipes, etc.) form a vacuum system and are widely used in electronics, metallurgy, chemical, food, machinery, medicine, aerospace and other departments. According to their working principle, basically divided into gas delivery pump and gas capture pump two types. The gas delivery pump includes a liquid ring vacuum pump (water ring vacuum pump), a reciprocating vacuum pump, a rotary vane vacuum pump, a fixed vane vacuum pump, a slide valve vacuum pump, a trochanter vacuum pump, a dry vacuum pump 8, the Roots vacuum pump 9, the molecular vacuum pump 10, the traction molecular pump 11, the composite vacuum pump 12, the water jet vacuum pump 13, the gas jet pump 14, steam jet pump 15, diffusion pumps and other gas capture pumps include: adsorption pump and cryogenic pump Wait. Currently the most widely used in industrial water ring vacuum pumps and rotary vane vacuum pumps. The Model W Piston Vacuum Pump is one of the major vacuum devices for obtaining rough vacuum. Widely used in chemical, food, building materials and other departments, especially in the vacuum crystallization, drying, filtration, evaporation and other processes more appropriate. Model 2X Sliding Vane Rotary Vacuum Pump One of the basic equipment used to evacuate gas from a closed container. It can be used alone, but also as a booster pump, diffusion pump, molecular pump foreline pump use. The pump is widely used in metallurgy, machinery, electronics, chemicals, petroleum, pharmaceutical and other industries vacuum smelting, vacuum coating, vacuum heat treatment, vacuum drying process. ModelXX Sliding Vane Rotary Vacuum Pump has the advantages of compact structure, small size, light weight, low noise and small vibration. Therefore, it is suitable for diffusion pumps for the foreline pump, but also more suitable for precision instrumentation and laboratory use. For example: mass spectrometry equipment, refrigerator lines, vacuum freeze-dryer and so on. Model XD Sliding Vane Rotary Vacuum Pump can work under any inlet pressure. It has been widely used in vacuum packaging of foodstuffs and vacuum plastic forming in the plastics industry. Printing industry, paper transportation, vacuum fixtures, and vacuum to attract. SZ, SK Series SZ Water Ring Vacuum Pump is mainly used for rough vacuum. Pumping large amount of process. It is mainly used to remove air and other non-corrosive, water-insoluble gas containing a small amount of solid particles in order to create a vacuum in a closed container. Sucked in the gas mixture allows a small amount of liquid. It is widely used in machinery, pharmaceuticals, food, petrochemical and other industries. 2SK, 2SK-P1 Series 2SK-P1 Water Ring Vacuum Pump is mainly used for pumping out air and other corrosive, water-insoluble and gas containing a small amount of solid particles. Widely used in food, textile, pharmaceutical, chemical and other industries in the vacuum evaporation, concentration, impregnation, drying and other processes. The pump has a high degree of vacuum, simple structure, easy to use, reliable, easy maintenance features. Model JZJS Roots-Water Ring Vacuum Pump System This unit is especially suitable for pumping water vapor with a certain corrosiveness Condensable gas in the process. Such as: vacuum distillation, evaporation, dehydration, crystallization, drying and other processes. Model JZJX Roots-Sliding Vane Rotary Vacuum Pump System is based on Roots pump, with vane pump as the fore pump in series. Its compact structure, easy to operate. For pumping air and other non-condensable and non-corrosive gases, are widely used in a variety of real systems that require large pumping speed and high vacuum. Such as: vacuum smelting, power capacitors, transformers, vacuum impregnation, vacuum coating equipment in the pre-pumping and so on. Model ZJ Roots Vacuum Pump Model ZJ Roots Vacuum Pump is a rotary varactor vacuum pump that requires a foreline pump to work with a large pumping speed over a wide range of pressures. Insensitive to water vapor and widely used in metallurgy, chemicals, food, electronic coating and other industries. HIB - SZ series of chemical corrosion-resistant ceramic water ring vacuum pump People often encountered in the use of transport of chemical gases, which requires the introduction of corrosion-resistant vacuum pump new concept. It is the use of ceramic special medium to do the flow of the part, in line with the usual "wear-resistant, acid, alkali, high temperature" requirements. This model is Shanghai Yihai recently introduced new products. 2BA series of direct-connected water ring vacuum pump 2BA-type water ring vacuum pump is my factory to meet the vacuum pump can be inhaled water requirements, the original SKF-type and 2FA water ring vacuum pump based on the self-developed from the new A generation of water ring vacuum pump. Its advanced design, novel structure, suitable for a variety of more demanding, complex applications. It can suck a medium containing a large amount of water vapor and condensable gas, which is not dangerous when pumping inflammable, explosive or poisonous, corrosive gas, so it can be widely used in machinery, petroleum, chemical, electric power, pharmaceutical, 2BA type water ring vacuum pump respectively replace SZ, SK, 2SK-3,2SK-6,2S-185, respectively, for the food, ceramics, sugar, printing and dyeing, metallurgy, plastic, tile, leather and other industries , 2SK-230 and W-type reciprocating vacuum pump. There are many types of vacuum pump, such as WLW series vacuum pump, W type vacuum pump, 2X type vacuum pump, ZJ type vacuum pump, 2SK type vacuum pump, SK type vacuum pump, 2BV type vacuum pump, MH-2 type vacuum pump, TLZ type vacuum pump and SL type Roots blower , JZJX type vacuum pump, JZJS type vacuum pump, JZJWLW type vacuum pump, JZJP type vacuum pump, RPP type vacuum pump, 2XZ type vacuum pump and other models. Widely used in plastic machinery, pesticide chemical industry, dye chemical industry, brick and tile machinery, low temperature equipment, papermaking machinery, pharmaceutical and chemical industry, food machinery, industrial furnace, electronics industry, vacuum equipment, fertilizer, metallurgy, petroleum, mining, foundation treatment and other fields. Also provides vacuum pump advice, vacuum pump troubleshooting, vacuum pump debugging, vacuum pump repair and other services. The working principle of various vacuum pumps CG-17 glass three high vacuum oil diffusion pump GG-17 glass, low expansion coefficient, better able to withstand high temperature differential, so the pump than the same type of pump can withstand high temperatures and Longer service life. The pump is suitable for the electronics industry, such as tubes. Picture tube. X-ray tube, and semiconductor monocrystalline silicon smelting purification, high-boiling oil distillation purification separation, fluorescent lamps, vacuum flask high vacuum exhaust equipment. The working principle of the first by rotating the vacuum pump pumping system to 10-2Pa diffusion pump oil is heated boiling, high-speed from the jet of oil and steam flow will continue to bring the gas molecules within the system to the pump side arm bend bulb at the assembly, to be gas The density reaches the working range of the mechanical vacuum pump and is withdrawn to gradually obtain a high vacuum Working principle of the water ring vacuum pump / liquid ring vacuum pump Water ring vacuum pump (water ring pump) is a rough vacuum pump, it can get the ultimate vacuum 2000 ~ 4000Pa, series atmosphere jet up to 270 ~ 670Pa. Water ring pump can also be used as a compressor, called the water ring compressor, is a low pressure compressor, the pressure range of 1 ~ 2 × 105Pa gauge pressure. Water ring pump was originally used as a self-priming pump, and then gradually used in petroleum, chemical, machinery, mining, light industry, medicine and food and many other industrial sectors. In many industrial processes, such as vacuum filtration, vacuum water diversion, vacuum feed, vacuum evaporation, vacuum concentration, vacuum resurgence and vacuum degassing, water ring pump is widely used. Due to the rapid development of vacuum application technology, water ring pumps have gained much attention in the area of ​​rough vacuum. As the water ring pump gas compression is isothermal, it can be extracted flammable and explosive gases, in addition to pumping dust, water-containing gas, therefore, water ring pump applications are increasing. In the pump body with the right amount of water as the working fluid. When the impeller rotates clockwise in the figure, the water is thrown around by the impeller. Due to the centrifugal force, the water forms a closed ring of approximately equal thickness depending on the shape of the pump chamber. The inner surface of the lower part of the water ring is just tangential to the hub of the impeller. The upper inner surface of the water ring is just in contact with the top of the blade (in fact, the blade has a certain insertion depth in the water ring). At this moment, a crescent-shaped space is formed between the impeller hub and the water ring, and the space is divided into a plurality of small cavities equal to the number of the blades by the impeller. If the lower part of the impeller 0 ° as a starting point, then the impeller 180 ° before the rotation of the small chamber volume from small to large, and the end of the suction port communicating, when the gas is inhaled, when the inhalation end of the small cavity When the impeller continues to rotate, the small cavity becomes smaller and the gas is compressed; when the small chamber communicates with the exhaust port, the gas is discharged outside the pump. In summary, the water ring pump is based on changes in the volume of the pump to achieve suction, compression and exhaust, so it belongs to the varactor vacuum pump. Roots pump works: Roots pump in the pump chamber, there are two "8" -shaped rotor perpendicular to each other mounted on a pair of parallel shaft, driven by a gear ratio of 1 pairs of gear opposite to each other Synchronous rotation movement. Between the rotors, between the rotor and the pump housing to maintain a certain gap, you can achieve high-speed operation. As Roots pump is a type of vacuum pump without internal compression, the compression ratio is usually low, so the high and medium vacuum pumps require a foreline pump. Roots pump ultimate vacuum in addition to depend on the pump structure and manufacturing accuracy, but also depends on the foreline pump ultimate vacuum. In order to increase the pump ultimate vacuum, Roots pumps can be used in series. Roots pumps work like Roots blowers. Due to the constant rotation of the rotor, the drawn gas is sucked into the space v0 between the rotor and the pump housing through the air inlet and then discharged through the air outlet. Since inhaled v0 space is completely closed state, so the gas in the pump chamber is not compressed and expanded. However, when the top of the rotor turns over the edge of the exhaust port, when the v0 space communicates with the exhaust side, since the pressure of the exhaust side gas is higher, a part of the gas bounces back into the space v0 to make the gas pressure suddenly increase. When the rotor continues to rotate, the gas is discharged outside the pump. Rotary vane vacuum pump working principle: Rotary vane vacuum pump (referred to as rotary vane pump) is a seal-type mechanical vacuum pump. The working pressure range of 101325 ~ 1.33 × 10-2 (Pa) belongs to the low vacuum pump. It can be used alone or as a foreline pump for other high-vacuum or ultra-high vacuum pumps. It has been widely used in metallurgy, machinery, military, electronics, chemicals, light industry, petroleum and pharmaceutical production and research departments. Rotary vane pump can be sealed off the sealed container of dry gas, if accompanied by gas-town device, you can also pump a certain amount of condensable gas. However, it is not suitable for the extraction of gases that are highly oxygenated, corrosive to metals, react chemically to pump oils and contain particulate dust. Rotary vane pumps are one of the most basic vacuum acquisition devices in vacuum technology. Rotary vane pump for small and medium-sized pump. Rotary vane pump has a single-stage and two-stage. The so-called two-stage, is the structure of two single-stage pump in series. Generally made more double-stage, in order to obtain a higher degree of vacuum. The relation between pumping speed and inlet pressure of rotary vane pump is as follows: Under the inlet pressure of 1333Pa, 1.33Pa and 1.33 × 10-1 (Pa), the pumping speed shall not be less than 95% of the nominal pumping speed of the pump respectively, 50% and 20%. Rotary vane pump mainly by the pump body, rotor, rotary vane, end caps, springs and other components. A rotator is eccentrically mounted in the cavity of the rotary vane pump, the outer circumference of the rotor is tangent to the inner surface of the pump cavity (both have a small gap), and two rotary vanes with springs are arranged in the rotor slot. Rotation, by centrifugal force and the tension of the spring so that the top of the rotary vane and the inner wall of the pump chamber to maintain contact with the rotor rotation of the rotary vane slide along the wall. The two vanes separate the crescent-shaped space enclosed by the rotor, the pump chamber and the two end caps into three sections A, B and C. When the rotor rotates in the direction of the arrow, the volume of the space A communicating with the suction port is Increasingly, is in the process of breathing. While the volume of the space C communicating with the exhaust port is gradually reduced and is in the process of exhausting. The volume of the central space B is also gradually reduced, is in the process of compression. Since the volume of space A is gradually increased (ie, expanded), the pressure of the gas is decreased and the pressure of the external gas at the inlet of the pump is greater than the pressure in space A, so gas is drawn in. When the space A and the suction port isolated, that is, to the space B position, the gas began to be compressed, the volume gradually reduced, and finally connected to the exhaust port. When the compressed gas exceeds the pressure of the exhaust gas, the exhaust valve is pushed by the compressed gas and the gas is discharged into the atmosphere through the oil layer in the fuel tank. By the continuous operation of the pump, to achieve the purpose of continuous extraction. If the discharge of gas through the airway and into another level (low vacuum level), from the low vacuum stage pumped away, and then by the low vacuum stage after the discharge to the atmosphere, the composition of the two-stage pump. At this time the total compression ratio is borne by two levels, thus increasing the ultimate vacuum. The above is a summary of the vacuum pump and water ring vacuum pump.