Our melamine plywood has mature technology, flat products, and is not easily deformed. The manufacturer has an advantage in direct selling prices. Furniture MEL AMINE PLYWOOD,Black Film Building Board,Building Black Film Faced Plywood,Black Film Faced Plywood For Construction Linyi Lanshan Weipu Rubber Factory , https://www.wpwoodfloor.com
Three screw pump application characteristics and selection method Three screw pump in the sewage treatment plant, is widely used in conveying water, wet sludge and flocculant liquid. Three screw pump selection should follow the economic, reasonable and reliable principles. Three screw pump variable delivery, self-absorption ability, reversible, can transport liquid containing solid particles and other characteristics, if the design selection of ill-considered, will give future use, management, maintenance, trouble, so the choice of According to the actual needs of a production, reasonable and reliable three screw pump can ensure the smooth production, but also reduce repair costs. First, to avoid broken once the occurrence of three screw rod breakage operation, the rubber stator due to dry friction, instantaneous heat generated and burned, so the grinder intact grille is a necessary condition for the normal operation of three screw pump First, for this reason, some three-screw pump is still installed in the pump body off the device, when there is a broken material, because of the self-priming function of the three-screw pump features, the cavity will produce a vacuum, the vacuum device will make three screw pump Stop working Second, to maintain a constant outlet pressure Three screw pump is a positive displacement rotary pump, when the outlet is blocked, the pressure will gradually increase, so that the pressure exceeds the predetermined value. At this time the motor load increased dramatically. Transmission machinery related parts load will exceed the design value, severe motor burn occurs, the transmission parts broken. In order to avoid damage to the three screw pump, usually at the outlet of the three screw pump bypass relief valve installed to stabilize the outlet pressure to maintain the normal operation of the pump. Third, to ensure that debris does not enter the wet sludge mixed with solid debris will cause damage to the rubber material of the three-screw pump stator, so to ensure that debris does not enter the cavity of the pump is very important, many sewage treatment plant in the pump Before the installation of crusher, and some grille installation or filter, blocking debris into the three screw pump, grill should be promptly salvaged to avoid clogging. Fourth, the three screw pump speed selection Three screw pump flow and speed into a linear relationship, relative to the low-speed three screw pump, high-speed three screw pump can increase the flow and lift, but the power was significantly increased, high speed Accelerated wear between the rotor and the stator, the three screw pump must fail prematurely, and high speed three screw pump stator length is very short, easy to wear, thus shortening the service life of three screw pump. Through the reducer or stepless speed regulation mechanism to reduce the speed, the exploration speed maintained at a reasonable range of three hundred revolutions per minute, and high-speed operation of the three screw pump, the service life can be extended several times. Third, the quality of the three screw pumps Now on the market more types of three screw pumps, relatively speaking, imported three screw pump design, excellent material, but the higher prices, some services are not in place, high parts prices, Long order cycle, may affect the normal operation of production. Most of the domestic production of imported products imitation, product quality varies greatly in the choice of domestically produced products, considering its cost-effective time, the choice of low speed, long lead, transmission parts of good quality, long life rating of the product.