Its main working parts are the eccentric screw spiral body (called the rotor) and the inner surface of the double helical screw bush (called stator). Its working principle is that when the motor drives the pump shaft to rotate, the screw rotates on its own axis on the one hand, and on the other hand, it rolls along the inner surface of the liner to form a sealed chamber of the pump. Each revolution of the screw, the liquid in the sealed cavity is pushed forward by one pitch. As the screw rotates continuously, the liquid spirally presses from one sealed cavity to the other sealed cavity, and finally the pump body is extruded. Screw pump hydraulic anti-reversing technology is to prevent the conventional screw pump wells in the shutdown or card pump column reversal, resulting in off the rod, polished rod rejection bending, ground equipment damage and other issues of technology. Screw rod pump often shut down after the pole reversal phenomenon occurs, the pole of the internal storage of torsional potential energy and the oil pressure differential may lead to pole reversal. Sudden release of the sucker rod torque, by the elastic storage rod potential energy and the impact of oil pressure differential, will have a huge instantaneous torque, easily lead to the polished rod in the high-speed rotation was thrown away or thrown off, high-speed pulley rotation Broken flying out of the staff and equipment damage. Due to the special geometry of the two parts, a separate sealed cavity is formed, respectively. The medium is pushed in uniformly by the axial direction, the internal flow rate is low, the volume remains unchanged and the pressure is stable, so that no eddy currents and agitation are generated. Each stage of the pump output pressure of 0.6MPa, lift 60m (water), self-priming height is generally 6m, suitable for conveying medium temperature below 80 ℃ (special requirements up to 150 ℃). The stator is made of a variety of elastic materials, so the pump of high viscosity fluid delivery and contains hard suspended particles or medium containing fiber transport, the general pump species can not be competent features. Its flow and speed is proportional to. Screw pump hydraulic anti-reversing technology is screw pump hydraulic anti-reverse device to achieve the release of torque. Screw pump hydraulic anti-reversing device can stop the screw spindle after the reverse, through the hydraulic caliper piston out to promote the friction plate chuck brake disc, the system pressure rapidly reduced. After the brake caliper loses pressure, the spindle decelerates reversely and the gear pump continues to work. The brake caliper again creates a pressure chucking brake disc so that the intermittent chuck-release-chuck-release until Spindle reverse torque unloaded to eliminate potential safety problems. Screw pump hydraulic anti-reverse device can be set internally to set the unilateral pressure relief mechanism, braking torque, smooth and reliable braking, heat dissipation, torque can be automatically released, without manual unloading torque. This device is a stand-alone device that can be retrofitted on an existing drive, with simple operation and low retrofit costs. Vertical single screw pump speed and flow is a linear relationship, the pump can be fixed speed flow. Can also stepless speed regulation or multi-level speed change to meet the user requirements of various characteristics, flow accuracy (± 1%), can be used as a metering pump for laboratories, pharmaceuticals, ingredients and so on. The pressure (head) generation is related to the "stator" helical lead (T) with a differential output of 0.6 Mpa (60 m) for one lead (T) and a pressure of 1.2 Mpa 12 0 m head). According to the conditions required for any one model can be made into, vertical, inclined, removable car-type pump and other types. Vertical single screw pump parts less, the structure is not complicated, so disassemble, repair simple, even if the initial use can be easily mastered in the short term.
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