A large displacement pump combined with a vane pump and a gear pump

Abstract

The invention relates to a high-duty pump combining a vane pump with a gear pump, and belongs to the technical field of hydraulic pump equipment manufacture. Vanes, end covers, rotors and a pump body form a sealed hydraulic chamber. A rotating shaft transmits a shaft torque input by a motor to the rotors and gears on the rotating shaft, the gears transmit the shaft torque to driven gears to drive another rotating shaft to rotate reversedly, and the rotors drive the movable vanes on the rotors to move back and forth in slides on the rotors under the guidance of guide plates when the rotors rotate. The vanes, the end covers, the rotors and the pump body form the sealed hydraulic chamber, and oil is driven to an oil outlet and extruded outside under the drive of the rotors. Compared with the existing vane pump, the pump has the characteristics of simple structure, easiness in processing, lower cost, no scraping or sticking, no abrasion on the surfaces of the vanes and the stators, and the like, and operates more stably; and the output flow rate of the pump is increased obviously. Compared with the existing gear pump, the pump has the advantages of easy oil absorption, high pressure, low noise, good stability, low power consumption, high working efficiency, and is suitable for large-tonnage hydraulic equipment.

Description

Technical field: [0001] The invention relates to a vane pump, in particular to a large displacement pump combined with a vane pump and a gear pump, and belongs to the technical field of hydraulic pump equipment manufacturing. Background technique: [0002] With the rapid development of economy and technology, hydraulic transmission technology has become more and more widely used in the fields of machinery manufacturing, metallurgy, chemical industry, building materials, construction, etc., and hydraulic equipment has higher and higher performance requirements for hydraulic power components. Gear pumps and vane pumps are commonly used in the past, but gear pumps have the disadvantages of high noise, poor stability, high power consumption, complex systems, and low work efficiency. Compared with gear pumps, vane pumps have the advantages of small flow, high cost, easy to wear on the surfaces of the blades and stators, and the phenomenon of scratching due to the unfixed positions of ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a large-displacement pump combined with a vane pump and a gear pump through the analysis and integration of the vane pump rotor structure and the gear structure of the gear pump, so as to solve the problem of a traditional vane pump with a complex structure and a small displacement. The problem is that when the pump is running, because the position of the blade and the shaft is fixed, it can avoid the phenomenon of scratching, the surface wear of the blade and the stator, and at the same time, it can avoid the working volume of the gear pump from being tightly sealed, the radial force is unbalanced, the oil is trapped, and the noise becomes louder. Low pressure, difficult oil absorption and other problems make the working state more stable and the output flow is significantly improved

Images