CN216241279U - High pressure high volumetric efficiency vane pump - Google Patents

Abstract

The utility model belongs to a hydraulic element in the mechanical industry, and particularly relates to a high-pressure high-volume-efficiency vane pump. The oil passage is a pore passage for communicating the side plate with the second high-pressure chamber, and the second high-pressure chamber is formed among the side plate, the pump cover, the first O-shaped ring and the second O-shaped ring. Simple structure can satisfy the demand that environmental protection reduced discharging, under the condition that impeller pump design discharge capacity reduces, can improve impeller pump's volumetric efficiency, has reduced the energy consumption loss, has improved the overall work efficiency of oil pump.

Description

High pressure high volumetric efficiency vane pump

technical field

The utility model belongs to hydraulic components in the machinery industry, in particular to a high-pressure and high-volume-efficiency vane pump.

Background technique

At present, in the field of automotive hydraulics, the environment for construction hydraulic machinery is getting worse and worse, and there are more and more high temperature and high pressure working conditions. The traditional method is to increase the displacement of the oil pump to meet the flow output under high pressure, but the national environmental protection is reduced. Emission policies are becoming more and more strict with emission requirements, and the existing high-pressure vane pumps cannot meet the needs of the automotive field.

SUMMARY OF THE INVENTION

The purpose of the utility model is to overcome the above-mentioned technical deficiencies, and to provide a high-pressure and high-volume-efficiency vane pump with a simple structure, which can reduce emissions and increase efficiency and reduce energy loss.

The technical scheme adopted by the utility model to solve the technical problem is as follows: the high-pressure and high-volume-efficiency vane pump comprises a pump body and a pump cover, and is characterized in that two stepped oil passage holes are arranged on the end face of the side plate, and the oil passage holes are the communication side. The high-pressure chamber two is formed between the plate and the hole of the high-pressure chamber two, the side plate, the pump cover, the first O-ring, and the second O-ring.

The beneficial effects of the utility model are as follows: the high-pressure and high-volume-efficiency vane pump has a simple structure, which can meet the requirements of environmental protection and emission reduction, and under the condition that the designed displacement of the vane pump is reduced, the volumetric efficiency of the vane pump can be improved, and the loss of energy consumption can be reduced , improve the overall working efficiency of the oil pump.

Description of drawings

Embodiments are described in detail below with reference to the accompanying drawings.

Figure 1 is an external structural diagram of a high-pressure high-volume vane pump.

FIG. 2 is a cross-sectional view of FIG. 1 .

FIG. 3 is a structural view of FIG. 1 with the pump cover removed.

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1 .

Fig. 5 is a structural view of the side plate of the vane pump.

FIG. 6 is an enlarged view of the work site of FIG. 2 .

In the figure, 1- pump body; 1-1- oil inlet; 1-2- pump cavity; 1-3- oil outlet; 2- pump cover; 3- side plate; 3-1- oil hole; 4 -Pressure plate; 5-stator; 6-rotor; 7-vane; 8-O-ring one; 9-O-ring two; 10-O-ring three; 11-O-ring four; 12-high pressure chamber one ; 13-high pressure chamber two; 14-shaft; 15-volume chamber; 16-O-ring five.

specific embodiment

Embodiments, referring to Figures 1 to 6, the pump cover 2 of the high-pressure high volumetric efficiency vane pump and the pump body 1 are connected by bolts and sealed with O-rings 5 16, and the pump body 1 is respectively provided with oil inlets 1-1. And the oil outlet 1-3, the pump cavity 1-2 of the pump body 1 is equipped with a stator 5, the side plate 3 is installed on the side of the upper end of the stator 5, and the pressure plate 4 is installed on the side of the lower end of the stator 5. The side plate 3 and the pump cover 2 are sealed with an O-ring 1 8 and an O-ring 2 9, and two stepped oil passage holes 3-1 are provided on the end face of the side plate 3. The oil passage holes 3-1 are The channel connecting the side plate 3 and the second chamber 13 of the high pressure chamber forms the second chamber 13 of the high pressure chamber between the side plate 3 , the pump cover 2 , the O-ring 1-8 and the O-ring 2 9 . The pressure plate 4 and the pump cavity 1-2 of the pump body 1 are sealed with O-ring three 10 and O-ring four 11, between the pressure plate 4, pump body 1, O-ring three 10, O-ring four 11 A high pressure chamber-a chamber 12 is formed. One end of the shaft 14 is installed in the pump cover 2 through a sliding bearing connection, and the other end of the shaft 14 is installed on the pump body 1 through a sliding bearing connection and is sealed with an oil seal. The shaft 14 moves through the side plate 3 and the pressure plate 4 respectively, and the shaft 14 passes through The rotor 6 is installed in the spline connection, the blades 7 are movably inserted in the blade grooves of the rotor 6, and a volume cavity 15 is formed between the stator 5 and the blades 7 of the rotor 6.

The working principle of Takano high volumetric efficiency vane pump is: the fluid enters the pump chamber 1-2 of the pump body 1 from the oil inlet 1-1, drives the rotor 6 to rotate, the vane 7 rotates with the rotor 6 at the same time, and is in the groove of the rotor 6. The inner diameter expands and contracts, so that the fluid is discharged from the oil outlet 1-3 to the system for pressurization, and the pressurized fluid flows into the high-pressure chamber 2 13 from the oil passage hole 3-1 of the side plate 3, and acts on the back of the side plate 3 to generate The axial force towards the rotor 6 resists the outward axial force generated by the fluid in the volume cavity 15 formed by the stator 5, the rotor 6 and the vanes 7, so as to avoid the axial deformation of the side plate 3, resulting in the end face of the rotor 6. The gap with the end face of the side plate 3 and the end face of the pressure plate 4 becomes larger, resulting in a decrease in volumetric efficiency. Pressure plate 4, pump body 1, O-ring 3 10, O-ring 4 11 form the high-pressure chamber 1 12, the high-pressure fluid acts on the end face of the pressure plate 4 in the high-pressure chamber 1 12, and the generated axial force passes through The oil passage of the pressure plate 4 pushes the pressure plate 4, the stator 5 and the side plate 3 to the side of the pump cover 2, and the pump cover 2 and the side plate 3 are attached to ensure the pressure plate 4 and the stator 5, and the stator 5 and the side plate 3. The end faces are tightly fitted to ensure a seal. The pressure area between the high pressure chamber 2 13 and the side plate 3 is smaller than the pressure area of the pressure plate 4 in the high pressure chamber one 12 area, so as to ensure that the axial force generated in the high pressure chamber one 12 area is greater than the high pressure chamber two 13 area. Axial force, Baozheng side plate 3 and pump cover 2 fit. When the axial force generated by the high pressure chamber 2 13 reaches a certain value, the side plate 3 will deform slightly, filling the axial gap between the stator 5 and the rotor 6 and improving the volumetric efficiency.

Claims (1)

1. A high pressure and high volumetric efficiency vane pump, comprising a pump body (1) and a pump cover (2), characterized in that two stepped oil passage holes (3-1) are provided on the end face of the side plate (3). ), the oil passage hole (3-1) is the hole connecting the side plate (3) and the high pressure chamber two (13), the side plate (3), the pump cover (2), the O-ring one (8), the O-ring A high pressure chamber two (13) is formed between the circle two (9).

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