CN2934664Y

CN2934664Y - Bi-directional gear pump

Info

Publication number: CN2934664Y
Application number: CN 200620021386
Authority: CN
Inventors: 刘守文; 崔中健; 张德珍; 毕学文
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2006-08-04
Filing date: 2006-08-04
Publication date: 2007-08-15
Anticipated expiration: 2016-08-04

Abstract

The utility model relates to a dual-direction gear pump. Due to the alternating change of oil suction cavity and oil discharge cavity caused by change of rotating direction when the existing ordinary oil pump is used, the oil suction port and oil discharge port outside of the oil pump changes, so as to affect the normal operation of positive rotating hydraulic circuit and reverse rotating hydraulic circuit. The utility model effectively solves the above-mentioned problem and comprises a casing (11) with a driving gear (1), a mated driven gear (2) meshed with the driving gear (1), a check valves (12), (13), (14) and (15) mounted respectively on the oil suction pipeline (9) and the oil discharge pipeline (10), and an adjustment cavity (7) and an adjustment cavity (8) in the casing (11). The gear pump is suitable for the hydraulic system of the unchangeable oil channel on the positive rotating and reverse rotating system.

Description

Double-direction gearpump

Technical field:

The utility model relates to a kind of gear pump, particularly a kind of gear pump of adjusting fuel-displaced direction by one-way valve.

Background technique:

When existing gear pump was worked, because the change of sense of rotation can make the oil inlet and outlet direction of oil pump all change, influence was rotated in the forward the proper functioning with the counterrotating hydraulic system.

Summary of the invention:

Thereby the purpose of this utility model provides a kind of double-direction gearpump of realizing being rotated in the forward with counterrotating hydraulic pressure proper functioning.

Above-mentioned purpose realizes by following technological scheme:

A kind of double-direction gearpump, its composition comprises: housing, the driven gear that driving gear is housed in the described housing, is meshed with described driving gear is located at one group of one-way valve on filler opening and the oil outlet pipeline respectively, has the adjustment chamber in the described housing.

Above-mentioned double-direction gearpump, described one-way valve are four.

The beneficial effects of the utility model:

1. working principle of the present utility model is on the working principle basis of ordinary gear oil pump, at four one-way valves of the inner adding of oil pump, the alternate of oil sucting cavity, pumping cavity when being used for controlling the sense of rotation change, and the outside inlet port of oil pump, pressure hydraulic fluid port are changed, thereby realization is rotated in the forward the proper functioning with the counterrotating hydraulic system, no matter gear is rotated counterclockwise or turns clockwise, and the oil inlet and outlet direction of oil pump is all constant.This product oil sucting cavity, pumping cavity alternate how no matter when the control sense of rotation changes, and do not make the external inlet port of oil pump, press hydraulic fluid port to change.

2. the utility model, being applicable to is existingly just changeing and counter-rotating is being arranged, and in the constant hydraulic system of inlet and outlet of fuel channel, medium as railway with the orbital maintenance car.

Description of drawings:

Accompanying drawing 1 is the structural representation of this product.

Accompanying drawing 2 is A-A sectional drawings of accompanying drawing 1.

Accompanying drawing 3 is B-B sectional drawings of accompanying drawing 1.

Embodiment:

Embodiment 1:

Double-direction gearpump, its composition comprises: housing 11, intermeshing driving gear 1, driven gear 2 and four one-way valves are housed in the described housing 11, comprise one-way valve 12, one-way valve 13, one-way valve 14, one-way valve 15, have oil outlet 10 and filler opening 9 on the housing, have steel ball 3, steel ball 4, steel ball 5, steel ball 6 on described one-way valve 12, one-way valve 13, one-way valve 14, the one-way valve 15.

When driving gear 1 turns right, drive driven gear 2 rotates thereupon, is oil sucting cavity at two gears by being engaged to disengagement one side chamber 8, volume is big from little change, form negative-pressure vacuum, fluid backs down steel ball 4 under atmospheric effect, fluid is inhaled into chamber 8, and this moment, steel ball 3 cut out under negative pressure and deadweight; Two gears in the chamber 7 are by disengaging to engagement, and volume forms pressure chamber from diminishing greatly, and fluid backs down steel ball 6 and is squeezed out, and oil sucting cavity and pumping cavity are kept apart by two gear meshing points, because the continuous running of gear has just formed the gear oil drain quantity.

Otherwise if driving gear 1 is turned left, 7 one-tenth in chamber oil sucting cavity, 8 one-tenth in chamber pumping cavity, oil backs down steel ball 5 and enters chamber 7, the pressure oil in the chamber 8 backs down steel ball 3, flows out from oil outlet 10.

As seen, no matter gear just changes or reverses, and filler opening and oil outlet can not change, and what can guarantee oil circuit thus is not subjected to gear rotation to the influence that changes.

Claims

1. double-direction gearpump, its composition comprises: housing, it is characterized in that: the driven gear that driving gear is housed in the described housing, is meshed with described driving gear, be located at one group of one-way valve on filler opening and the oil outlet pipeline respectively, have the adjustment chamber in the described housing.

2. double-direction gearpump according to claim 1 is characterized in that: described one-way valve is four.