3results about How to "Reduce starting load" patented technology

The plunger pump comprises a pump body, a high-pressure cavity, a low-pressure cavity and a pressure regulating valve, the high-pressure cavity, the low-pressure cavity and the pressure regulating valve are arranged in the pump body, a mounting part is arranged on one side of the pump body, a mounting groove is formed in the mounting part, a first flow channel and a second flow channel are formed in the side wall of the mounting groove, the first flow channel is communicated with the low-pressure cavity, and the second flow channel is communicated with the low-pressure cavity. The runner II is communicated with the high-pressure cavity; a choke plug is inserted in the mounting groove, and a first circulation groove and a second circulation groove are formed in the choke plug. A steel ball is arranged in the first circulation groove, a supporting ring is arranged in the mounting groove, a placing ring groove is formed in the position, corresponding to an inlet of the first flow channel, of the bottom of the mounting groove, a spring is placed in the placing ring groove, the spring penetrates through an inner hole of the supporting ring and extends into the first circulation groove, and the top end of the spring abuts against the steel ball. The low-load soft start circuit can realize low-load soft start.

The utility model provides a compact independent circulating water cooler relates to heat transfer equipment technical field, including oil tank, the inside heating unit of oil tank is provided with, circulating pump unit, circulating pump unit includes oil pump, and the oil suction of oil pump is connected with oil tank through pipeline, still include filter branch and cooler branch who sets up in series, filter branch is connected with the oil outlet of circulating pump unit through pipeline, and cooler branch is connected with oil tank to form closed lubricating oil circulation loop, and the external filter is connected in series in filter branch, and the cooler of water -cooled type is connected in series in cooler branch, the utility model is provided with bypass protection unit to can open bypass in system cold start or oil temperature is too low, viscosity is sharply increased and makes oil pressure exceed preset threshold value instantaneous automatic, makes high pressure oil liquid bypass, thereby effectively protected filter and cooler core body from high pressure impact damage, and reduced oil pump's starting load and overload risk.

The application belongs to the technical field of tailings conveying, and discloses a buffer type stirring and slurry mixing device for tailings grading conveying, which comprises a stirring outer tank, a buffer inner tank movably arranged in the stirring outer tank, an elastic support structure for suspending the buffer inner tank on the stirring outer tank, and a self-adapting water inlet assembly and a mixing and stirring assembly. The application effectively prevents overpressure of a conveying pump and pipeline blockage caused by too thick slurry, avoids insufficient strength and segregation and delamination of a filling body caused by too thin slurry, and greatly improves process stability and safety of a filling system.