5results about How to "Avoid eccentric wear" patented technology

The invention discloses a radial split type multistage pump maintenance device and method, and belongs to the field of maintenance, the radial split type multistage pump maintenance device comprises a support, a jack, a steel ball and a dial indicator, the support is used for supporting an external pump body and realizing vertical placement of the external pump body, the jack is arranged in the support, the steel ball is arranged at the top of the jack, and the dial indicator is arranged on the pump body. And measuring the shaking amount of the pump body bearing seat. The detection means adopted by the invention can effectively eliminate installation accumulated errors caused by factors such as gravity action and pump body spigot fit clearance in the step-by-step assembly process of the sectional pump body, and solves the technical problem that the bearing cannot accurately position the radial center of the rotor.

The present application relates to the technical field of tubular turbine, and discloses a kind of tubular turbine control ring auxiliary support device, including hanger, the lower part of the hanger is bent part, the bent part is equipped with self-lubricating wear pad and support block, the self-lubricating wear pad is fixedly connected above support block, the upper part of the hanger is equipped with fixed mechanism;The fixed mechanism is used to connect the side wall of outer guide ring, and the self-lubricating wear pad is used to support the outer circle connected on the bottom of control ring.Effectively solve the problem that the income of power station is affected by frequently replacing steel ball and repairing sliding chute.

The utility model provides a positioning mechanism for punch -die belongs to die positioning technical field, including lower mould and upper die, the lower mould is located upper die below, fixed in the cylindrical of lower mould top, fixed in the positioning sleeve of cylindrical top, the detection groove of axial equidistance is opened in the outside wall of positioning sleeve, is located in the inside detection groove's judgment board, is located in the spring of judgment board outside wall, the two half ring grooves of symmetry is opened in the lower mould top close cylindrical outside position department, the three -phase motor of fixed in the lower mould inside close cylindrical just below position department, the utility model discloses whether the eccentricity between positioning sleeve and positioning rod is produced through the difference change of the ranging value produced to judge, avoids the positioning rod long -time to positioning sleeve in one direction rubs, avoids the eccentric wear of guide bush and guide column in mould in various factors causes, is convenient for timely maintenance and maintenance, guarantees the precision of positioning mechanism positioning in mould.

The invention relates to a forward and reverse adjustment submersible screw pump which comprises a shell, and a driving part, a stator and rotor assembly, an adjusting shaft, an adjuster and a limiter which are arranged in the shell. The driving part is used for providing rotation driving force for the rotor, so that the rotor and the stator rotate relatively, and oil extraction is achieved. The screw pump shell is positioned through the oil pumping pipe fixed underground, so that the rotor can be positioned through the limiting stopper, in addition, the adjuster can convert rotary motion carried out together with the adjusting shaft into rotary motion independent of the adjusting shaft, the adjuster is in threaded fit with the adjusting shaft, and the adjusting shaft is in threaded fit with the adjusting shaft. Axial displacement can occur between the adjuster and the adjusting shaft, so that the gap between the stator and the rotor is accurately adjusted.

The utility model discloses a low-vibration high-lift spiral constant-pressure pump, and belongs to the technical field of water pumps. Comprising two pump shells which are buckled oppositely and internally form a spiral mounting cavity, an impeller horizontally mounted in the spiral mounting cavity through a pump shaft, and a buffer base mounted at the bottom ends of the pump shells; the guide vanes at the water inlet can guide fluid to flow into the impeller at an axial uniform speed, inlet vortex loss is reduced, kinetic energy of the fluid is converted into pressure energy more efficiently, the guide ribs at the water outlet can reduce outlet pressure fluctuation, lift stability is improved, vibration excitation sources caused by fluid impact are reduced, and the service life of the impeller is prolonged. The bottom end of the spiral constant-pressure pump is connected with the buffer base, the vibration amplitude of the pump body is directly reduced, the vibration transmissibility is reduced, and the abnormal vibration risk is reduced; in short, the spiral constant pressure pump has the characteristics of low vibration and high lift, and is suitable for popularization.