The pipeline system that is closely related to the normal operation of the imported vacuum pump includes the gas pipeline and its accessories as well as the liquid pipeline that supplies the working fluid. From the interface of the vacuum unit of the paper machine to the entire gas line of the exhaust port of the vacuum system and the parts thereof, YARRID's gas flow directions are as follows: front separator front pipe, front gas-water separator, front Set the separator after the pipeline, after the air-water separator or drain. Paper production line 1, pre-separator before and after the pipeline. Shop long pipeline layout, the pre-separator gas flow rate can be 18m / s speed to select, in accordance with this to determine the diameter of the front separator before the pipeline. Pre-separator after the pipeline gas flow rate can be 28m / s speed to select, and then calculate the diameter of the pipeline. With the front separator inlet and exhaust flange size is inconsistent, the application of the size of the first adjustable tube coupling. When the pipeline layout is shorter, you can directly use the front separator inlet and exhaust flange to determine the diameter of the connecting pipe. Gas piping arrangement should be conducive to drainage, and to minimize the elbow settings. According to the direction of gas flow, the pipeline should be gradually downward tilt, tilt angle should be greater than 1 degree. Occasionally you will see some paper mills in order to facilitate the installation, the pipeline installed directly to the ground, pipelines caused by water loss pipe increases, resulting in vacuum fluctuations affect the paper quality. If the water with the gas into the vacuum pump, can cause a sudden increase CapSense vacuum motor current, and sometimes even cause damage to the pump blades. 2, front gas-water separator. The front gas-water separator is used to separate the moisture removed from the vacuum dewatering element, block the moisture and the papermaking chemical additives it contains into the vacuum pump, avoiding the effects on pump gas volume and shaft power and causing damage to the vacuum pump. When the water-air mixture water content reaches 50% of the work of the vacuum pump, you need to be equipped with a front separator. Separator gas flow rate should be controlled at 5m / s or less, so as to ensure a better separation. 3, after the air-water separator or drainage ditch. Rear air-water separator or drain is a vacuum pump working fluid recovery equipment, design excellent rear separator or drain can also play a good noise reduction effect. Poor gas recirculation or gutter design can cause increased vacuum pump shaft power, excessive motor power, and even motor tripping. 4, vacuum pump water supply pipeline. From the trend point of view, the vacuum pump working fluid supply water are used in a circular way, from the water tank under the cooling tower water supply Cade vacuum pump for working fluid. Cone-type vacuum pump water often require a certain pressure head, so the need for a series of centrifugal pumps in the water supply pipeline pressure, flat-type vacuum pump pump water supply interface position near the atmospheric pressure required, so no series centrifugal pump, only Need to pick up the reservoir elevation of 3 meters or more. In the design of the water supply pipe, pay attention to the flow rate should be controlled at about 1.5 ~ 2m / s, the flow rate will occur too fast so-called "grab the water" phenomenon, resulting in decreased vacuum pump or unstable work. (Editor: LLX QQ:) Recommended reading: 2017 Exhibition Information 2016 Yiwu Fair
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