160Mpa electro-hydraulic proportional control radial piston pump

Abstract

The invention discloses a 160Mpa electrohydraulic proportional control radial plunger pump, comprising a slippage pump, a plunger, a case, an inlet valve, a stator, a pump bonnet, a vent valve, a transmission shaft, a bearing and so on. The invention is characterized in that the stator is arranged on the transmission shaft which is in the middle of a main oil pump; a large plunger is arranged on the upper end of the stator and a plunger is arranged in the large plunger; the outer side of the plunger is sleeved with a plunger bushing, the upper end of which is connected with the inlet valve, a row of oil valves are arranged on the case; an electrohydraulic proportional speed-regulating valve and an overflow valve are arranged on the pump bonnet; the slippage pump is arranged at the left end of the main pump. The invention causes the rotator always to have an film lubrication with the internal surface of the stator during the rotation, at the same time the radial load of the stator and the rotator and the lateral force of the plunger are reduced, the service life is prolonged and the work efficiency is improved and the application fields are wider; furthermore, the invention can gradually occupy the international market and has bright prospect.

Description

technical field [0001] The invention relates to the technical fields of hydraulic pressure, machinery and electronics, in particular to a 160Mpa (ultrahigh pressure) electro-hydraulic proportional control radial piston pump. Background technique [0002] At present, only the German BoSch company has this type of ultra-high pressure pump in the world. It belongs to the ultra-high pressure small displacement hydraulic pump. 180Mpa, speed of 3000r p m, noise of 75dB, total efficiency of 84%, service life of 3000-5000 hours, and strong impact resistance. It is a relatively advanced and latest high-performance ultra-high pressure diameter in the world today. to the plunger pump. Due to the wide application and the power source of energy saving and pollution reduction, most countries in the world such as Japan, South Korea, the United Kingdom, the United States, China and some European countries import from the German BoSch company. The environmental protection of my country's a...

AI Technical Summary

Problems solved by technology

The environmental protection of my country's automobile industry requires that diesel engines must adopt EFI fuel supply system, and the diesel engine fuel supply system should be replaced by EFI fuel supply system. There is an urgent need for a large number of such power sources, followed by petrochemical industry, shipbuilding industry, fire protection, nuclear submarines and heavy machinery and In the ultra-high pressure system tool industry, etc., the annual import volume is as high as 150,000 units, and there is still a substantial increase trend. At present, there is no such product in my country, and it has long relied on imports. several times the price

The import cycle is long, seriously affecting the development of production

The existing ultra-high pressure pumps at home and abroad generally have excessive radial loads, the friction pairs such as the rotor and the stator are not lubricated by oil film, and the neutrality of the plunger is poor during the reciprocating motion, resulting in excessive lateral force between the plunger and the plunger sleeve. The internal friction pair of the pump wears quickly, the volumetric efficiency is low, and the service life is short.

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