Water ring vacuum pump working principle (a)

First, the use and scope of use SK series water ring vacuum pump and the compressor is used to pump or pressure gas and other non-corrosive, insoluble in water, does not contain solid particles of gas in order to form a closed vacuum container or pressure , To meet the specific requirements of the process equipment. Inhaled or pressured gas is allowed to contain a small amount of liquid. SK series water ring vacuum pumps and compressors are widely used in machinery, petroleum, chemical, pharmaceutical, food, ceramics, sugar, printing and dyeing, metallurgy, environmental protection and electronics industries. Due to the working process, the pump of the gas compression is carried out in an isothermal state, so the pressure delivery or pumping flammable, explosive gas is not prone to danger, so its application is more extensive. Pump model description. For example: SK-122i2J SK said water ring vacuum pump; 12 said the maximum pumping capacity of the pump 12m3 / min (cubic meters / minute) Second, the principle Impeller 3 is eccentrically installed in the pump body 2, A certain height of the water into the working fluid, when the impeller 3 rotates in the direction shown in the figure, the water by the centrifugal force on the pump wall to form a closed rotary ring 5, the upper surface of the water ring and the hub tangent to the water ring The lower inner surface is just in contact with the tip of the blade. At this moment, a crescent-shaped space is formed between the impeller hub and the water ring, and the space is further divided into a plurality of small cavities equal to the number of blades by the impeller. If the upper part of the impeller 0 ° as a starting point, then the impeller at 180 ° before the rotation of the small chamber volume from small to large, and with the end cap on the suction port communicating, the gas pressure in the space decreased, when the gas was Inhalation, when the inhalation end of the small cavity is isolated from the suction port; when the impeller in the 180 ° to 360 ° rotation process, the inner surface of the water ring gradually close to the hub, the small cavity from large to small, the space of gas When the pressure rises above the vent pressure, the gas is vented when the smaller chamber communicates with the vent port. Each rotation of the impeller, the blade space (small cavity) suction, exhaust time, a number of small cavity kept working, so reciprocating, the pump continuously pumping or pressure to send gas. Due to the heat generated during work, it will heat the working water ring and a part of the water is discharged together with the gas. Therefore, during the work process, the pump must be continuously supplied with water to cool and replenish the water consumed in the pump , To meet the pump's job requirements. When the pump exhaust gas is no longer used, one end of the pump exhaust connected to the water separator (can make a water tank instead), the exhaust gas and the part of the water discharged into the water separator, the gas discharged through the exhaust pipe , The water remains in the separator due to gravity and is supplied to the pump for circulation through the return pipe. With the Director of working hours, the working fluid temperature will continue to rise, this time to be added to the steam separator a certain amount of cold water (tap water can be used) to reduce the temperature of the working fluid to ensure that the pump can achieve the required technology Requirements and performance indicators When used as a compressor, the pump exhaust connected to a car separator, the car mixture into the separator automatically separated gas from the exhaust pipe to the desired system and the working fluid through the automatic overflow switch release, Compressed gas, the working fluid is very easy to heat, the exhaust outlet from the pump, the temperature will become higher, so at the bottom of the steam separator, to continue to supply cold water to replenish the hot water was released, while cooling , So that the working fluid temperature will not be too high, so as to ensure the compressor performance, to achieve technical indicators to meet the job requirements.