External gear pump capable of being used for forward and reverse rotation

Abstract

The invention provides an external gear pump capable of being used for forward and reverse rotation. The external gear pump comprises a gear pump body, and is characterized in that the gear pump body is divided into an upper pump body (5) and a lower pump body (1); the two ends of a driving gear shaft (9) and the two ends of a driven gear shaft (4) are inserted into an inner cavity of the upper pump body (5) and an inner cavity of the lower pump body (1) respectively; one end of a spline shaft (6) is inserted into the inner cavity of the upper pump body, the driving gear shaft (9) and the spline shaft (6) are connected through an inner spline and an outer spline, and two floating side plates (2) are attached to the two end faces of a gear respectively; and the two ends of the driving gear shaft (9) and the two ends of the driven gear shaft (4) are sleeved with two pairs of sliding bearings respectively, the end, connected with the driving gear shaft, of the spline shaft is sleeved with two conical roller bearings, during assembly, the position of the driving gear shaft (9) and the position of the driven gear shaft (4) are exchanged, and the gear pump for forward rotation or reverse rotation can be assembled according to requirements.

Description

technical field [0001] The invention relates to an external meshing gear pump, in particular to an external meshing gear pump capable of forward and reverse rotation. Background technique [0002] The external gear pump is a kind of hydraulic pump that conveys the working oil through the continuous transmission of two intermeshing gears to produce a closed volume change. It has a simple structure, good self-priming performance, insensitivity to oil pollution, and Reliable and other advantages, widely used in hydraulic transmission. [0003] At present, gear pumps with forward rotation and reverse rotation are often used in general hydraulic systems at the same time. However, because the working state of the gear pump is limited by its structure, its rotation cannot be changed at will. If the rotation of the gear pump is changed, the sealing element will be damaged. Failure, or even damage to the gear pump, so the current manufacturers of gear pumps will produce forward gear...

AI Technical Summary

Problems solved by technology

[0003] At present, gear pumps with forward rotation and reverse rotation are often used in general hydraulic systems at the same time. However, because the working state of the gear pump is limited by its structure, its rotation cannot be changed at will. If the rotation of the gear pump is changed, the sealing element will be damaged. Failure, or even damage to the gear pump, so the current manufacturers of gear pumps will produce forward gear pumps and reverse gear pumps at the same time

However, due to the difference in the structure and some parts of the forward gear pump and the reverse gear pump, the manufacturer needs to use different production equipment and processing techniques to manufacture the two gear pumps with different directions at the same time. The existence of these problems is not conducive to The current production and maintenance management of gear pumps also greatly reduces the production efficiency of gear pumps

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