CN202746191U

CN202746191U - High-pressure large-output-volume gear pump

Info

Publication number: CN202746191U
Application number: CN201220458016.3U
Authority: CN
Inventors: 郭振纯; 柴迎春; 白龙
Original assignee: FUXIN BEI XING HYDRAULIC Co Ltd
Current assignee: FUXIN BEI XING HYDRAULIC Co Ltd
Priority date: 2012-09-11
Filing date: 2012-09-11
Publication date: 2013-02-20
Anticipated expiration: 2022-09-11

Abstract

The utility model belongs to a fluid pump in a machine industry, and particularly relates to a high-pressure large-output-volume gear pump. The high-pressure large-output-volume gear pump is characterized in that two end faces of engaging teeth of a driving gear shaft (5) and a driven gear shaft (6) in a pump body (2) are provided with floating side plates (8), and the copper surfaces of the floating side plates (8) are symmetrically provided with arc-shaped floating side plate oil grooves (8-2) having same shape with the floating side plates (8) in an upper-down manner; the middle of the upper-down arc-shaped floating side plate oil grooves (8-2) is provided with a floating side plate compensating groove (8-1), and the middle concave parts of the floating side plates (8) are symmetrically provided with a floating side plate compensating groove (8-3); front and rear pump covers (1,4) are provided with front and rear pump cover compensating grooves (1-1,4-1), front and rear pump cover seal ring grooves (1-2,4-2) and front and rear pump cover compensating grooves (1-3,4-3); and the inner circumference surface of the pump body (2), the outer side surfaces of the floating side plates (8) and the outer circumference surfaces of sliding bearings (7) are provided with solid lubrication films (3). The floating side plates of the high-pressure large-output-volume gear pump can be used for improving the volumetric efficiency and mechanical efficiency of the gear pump, noises are reduced, and the protection of production environment is benefitted.

Description

The high-pressure large-displacement gear pump

Technical field

The utility model belongs to the oil hydraulic pump in the machinery industry, particularly a kind of high-pressure large-displacement gear pump.

Background technique

At present, the gear pump of domestic and international application is more, the floating side plate structural design has multiple, to affect the volumetric efficiency of pump and the principal element of mechanical efficiency, it is not accurate that existing high-pressure large-displacement gear pump floating side plate exists the axial pressure balance, thereby cause friction factor high, temperature rise, the deficiencies such as power loss is large, and efficient is low, noise is large, working life is low.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned technical deficiency, provides that floating side plate can make pressure balance accurate in a kind of gear pump, and the coefficient of reducing friction reduces the high-pressure large-displacement gear pump of noise.

The technological scheme that the utility model technical solution problem adopts is: before the high-pressure large-displacement gear pump comprises, rear pump cover, the pump housing, driving gear shaft, driven gear shaft, sliding bearing, outside framework oil seal, ball bearing, be characterized in the driving gear shaft in the pump housing, on the engaging tooth both ends of the surface on the driven gear shaft floating side plate is housed, upper at the floating side plate copper face, lower symmetry has and the circular arc floating side plate oil groove of floating side plate with shape, upper, the place is provided with the floating side plate compensating groove in the middle of the lower circular arc floating side plate oil groove, central concave place at floating side plate is arranged with the floating side plate compensating groove, before corresponding with floating side plate, before being provided with equally on the rear pump cover, the rear pump cover compensating groove, front and back pump cover seal groove, before, the rear pump cover compensating groove is being led, the pump housing inner peripheral surface that the engaging tooth of driven gear shaft is corresponding, be equipped with solid lubricant film on the outer peripheral surface of floating side plate outer side surface and sliding bearing.

The beneficial effects of the utility model are: the relief groove that adopts on the floating side plate of high-pressure large-displacement gear pump makes its axial pressure balance accurate; gear face and surface of side plate contact are moderate; reduced face leakage; reduced the coefficient of sliding friction; reduce heat generation and power consumpiton; improve volumetric efficiency and the mechanical efficiency of gear pump, reduced noise, be conducive to the protection of production environment.

Description of drawings

Specify with embodiment below in conjunction with accompanying drawing.

Fig. 1 is high-pressure large-displacement gear pump structure figure.

Fig. 2 is the I place enlarged view among Fig. 1.

Fig. 3 is floating side plate copper face structural drawing among Fig. 1.

Fig. 4 is forward and backward pump cover inner side end structural drawing among Fig. 1.

Among the figure, the 1-front pump cover; 1-1-front pump cover compensating groove; 1-2-front pump cover seal groove; 1-3-front pump cover compensating groove; The 2-pump housing; The 3-solid lubricant film; The 4-rear pump cover; 4-1-rear pump cover compensating groove; 4-2-rear pump cover seal groove; 4-3-rear pump cover compensating groove; The 5-driving gear shaft; The 6-driven gear shaft; The 7-sliding bearing; The 8-floating side plate; 8-1-floating side plate compensating groove; 8-2-floating side plate oil groove; 8-3-floating side plate compensating groove; The 9-outside framework oil seal; The 10-ball bearing.

Embodiment

Embodiment, with reference to accompanying drawing 1 ~ 4, armored pump body 2 between the front pump cover 1 of high-pressure large-displacement gear pump and the rear pump cover 4, front pump cover 1, the pump housing 2, rear pump cover 4 usefulness bolt and nuts are together fastening, at front pump cover 1, parallel driving gear shaft 5 and driven gear shaft 6 are housed in the rear pump cover 4, driving gear shaft 5 in the pump housing 2 and the outside of the engaging tooth on the driven gear shaft 6 end face are provided with floating side plate 8, on the copper face of floating side plate 8, lower circular arc place is provided with and the circular arc floating side plate oil groove 8-2 of floating side plate 8 with shape, the place is provided with floating side plate compensating groove 8-1 in the middle of the floating side plate oil groove 8-2, is arranged with floating side plate compensating groove 8-3 at the middle recess of floating side plate 8.Be provided with forward and backward pump cover compensating groove 1-1,4-1 at the forward and backward pump cover 1,4 corresponding with floating side plate, be provided with the forward and backward pump cover seal groove of anti-figure-three 1-2,4-2 at front and back pump cover 1,4, middle place is provided with forward and backward pump cover compensating groove 1-3, the 4-3 of right-angle folding hook-type on forward and backward pump cover 1,4.Outer peripheral surface at the pump housing 2 inner peripheral surfaces, floating side plate 8 outside end faces and sliding bearing 7 is equipped with solid lubricant film 3.On driving gear shaft 5, with front pump cover 1 junction reinforced seal 9 is housed, the outside dress ball bearing 10 of reinforced seal 9.

The floating side plate 8 of high-pressure large-displacement gear pump and compensating groove 8-1,1-1,4-1 and compensating groove 8-3,1-3, the 4-3 of the correspondence on the forward and backward pump cover 1,4 have reduced end and have leaked, and have improved the volumetric efficiency of pump, and have reached the purpose of high-pressure large-displacement.

Claims

1. high-pressure large-displacement gear pump, before comprising, rear pump cover (1,4), the pump housing (2), driving gear shaft (5), driven gear shaft (6), sliding bearing (7), outside framework oil seal (9), ball bearing (10), it is characterized in that the driving gear shaft (5) in the pump housing (2), floating side plate (8) is housed on the engaging tooth both ends of the surface on the driven gear shaft (6), upper at floating side plate (8) copper face, lower symmetry has and the circular arc floating side plate oil groove (8-2) of floating side plate (8) with shape, upper, the place is provided with floating side plate compensating groove (8-1) in the middle of the lower circular arc floating side plate oil groove (8-2), be arranged with floating side plate compensating groove (8-3) at the central concave place of floating side plate (8), before corresponding with floating side plate (8), rear pump cover (1,4) before being provided with equally on, rear pump cover compensating groove (1-1,4-1), front and back pump cover seal groove (1-2,4-2), before, rear pump cover compensating groove (1-3,4-3), leading, driven gear shaft (5,6) pump housing that engaging tooth is corresponding (2) inner peripheral surface, be equipped with solid lubricant film (3) on the outer peripheral surface of floating side plate (8) outer side surface and sliding bearing (7).