Egg shape conical gear pump

Abstract

The invention discloses an egg shape conical gear pump, comprising a pump case as well as a driving gear and a driven gear which are arranged in the pump case and are mutually meshed; wherein the driving gear and the driven gear are all egg shape conical gears and vertically intersected and meshed with the axis, the spherical large end face pitch curves of the driving gear and the driven gear are in egg shape. Compared with the existing gear pump, under the conditions of the same volume, the same rotating speed and the same working condition, the egg shape conical gear pump is greatly higher than the same type cylindrical gear pump and non-cylindrical gear pump in the aspects of average flow, instant flow and variable range thereof, the problem that radial force of gear pump is larger is overcome, pulse amplitude of force is reduced, transmission stationarity is good, vibration and noise are less, the working life of gear pump can be effectively prolonged, efficiency of pump is improved, and driving energy source is saved. The invention is applicable to application occasion with large delivery volume and large variable range.

Description

technical field [0001] The invention relates to a fluid pump, in particular to an egg-shaped bevel gear pump. Background technique [0002] The gear pump is a positive displacement pump formed by a pair of meshing gears and a pump cylinder. The pump cylinder is divided into a suction chamber and a discharge chamber by the meshing gears. When the gear rotates, the volume between the teeth at the side of the suction chamber where the teeth disengage from each other gradually increases, the pressure decreases, and the liquid enters the space between the teeth under the action of the pressure difference. As the gear rotates, the liquid between the teeth is brought to the discharge chamber. At this time, the volume between the teeth at the side of the discharge chamber where the teeth mesh gradually decreases, and the liquid is discharged. Gear pumps are suitable for conveying lubricating liquids that do not contain solid particles, are non-corrosive, and have a large viscosity...

AI Technical Summary

Problems solved by technology

The gear pump is simple and compact in structure, easy to manufacture, easy to maintain, and has self-priming ability, but the flow and pressure pulsation is large and the noise is large, which has adverse effects on the pump itself

In particular, the displacement cannot be changed basically, or can be adjusted in a small range, and usually the displacement is small, which limits the application range of the gear pump to a great extent.

If a gear pump with a larger flow rate is required, the volume and speed of the gear pump need to be increased to further increase the operating noise, resulting in a great waste of power

However, when transporting medium with high viscosity, the increase of the pump speed has a certain limit, which affects the efficiency of the pump and causes waste of energy.

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