CN216241279U - High-pressure high-volume-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-volume-efficiency vane pump

Technical Field

The utility model belongs to a hydraulic element in the mechanical industry, and particularly relates to a high-pressure high-volume-efficiency vane pump.

Background

At present, in the field of automobile hydraulic, the environment for engineering hydraulic machinery is more and more severe, and high-temperature and high-pressure working conditions are more and more, and the traditional method is that the discharge capacity of an oil pump is increased to meet the flow output under high pressure, but the national environmental protection and emission reduction policy is more and more strict on the discharge requirement, and the existing high-pressure vane pump cannot meet the requirements of the field of automobiles.

Disclosure of Invention

The utility model aims to overcome the technical defects and provide the high-pressure high-volume-efficiency vane pump which is simple in structure, can reduce emission and increase efficiency and can reduce energy loss.

The technical scheme adopted by the utility model for solving the technical problem is as follows: the high-pressure high-volume-efficiency vane pump comprises a pump body and a pump cover, and is characterized in that two step type oil through holes are formed in the end face of a side plate, the oil through holes are pore passages for communicating the side plate with a high-pressure chamber II, and the high-pressure chamber II is formed among the side plate, the pump cover, a first O-shaped ring and the second O-shaped ring.

The utility model has the beneficial effects that: the high-pressure high-volume-efficiency vane pump is simple in structure, can meet the requirements of environmental protection and emission reduction, can improve the volume efficiency of the vane pump under the condition that the designed discharge capacity of the vane pump is reduced, reduces energy consumption loss and improves the overall working efficiency of the oil pump.

Drawings

The following description is made in detail by way of example with reference to the accompanying drawings.

Fig. 1 is an external structural view of a high-pressure high-volume vane pump.

Fig. 2 is a sectional view of fig. 1.

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

Fig. 4 is a sectional view a-a of fig. 1.

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

Fig. 6 is an enlarged view of the work site of fig. 2.

In the figure, 1-pump body; 1-1-an oil inlet; 1-2-pump cavity; 1-3-oil outlet; 2-pump cover; 3-side plate; 3-1-oil through hole; 4-a pressure plate; 5-a stator; 6-a rotor; 7-a blade; 8-O-shaped ring I; 9-O-shaped ring II; 10-O-shaped ring III; 11-O-shaped ring IV; 12-a high pressure chamber one; 13-high pressure chamber two; 14-axis; 15-volume chamber; and 16-O-shaped ring five.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

In the embodiment, referring to the attached drawings 1-6, a pump cover 2 of a high-pressure high-volumetric-efficiency vane pump is connected with a pump body 1 through a bolt and sealed by an O-shaped ring five 16, the pump body 1 is provided with an oil inlet 1-1 and an oil outlet 1-3 respectively, a stator 5 is arranged in a pump cavity 1-2 of the pump body 1, a side plate 3 is arranged on the side surface of the upper end of the stator 5, and a pressure plate 4 is arranged on the side surface of the lower end of the stator 5. The side plate 3 and the pump cover 2 are sealed by the O-shaped ring I8 and the O-shaped ring II 9, two step type oil through holes 3-1 are formed in the end face of the side plate 3, the oil through holes 3-1 are channels for communicating the side plate 3 with the high-pressure cavity II chamber 13, and the high-pressure cavity II chamber 13 is formed among the side plate 3, the pump cover 2, the O-shaped ring I-8 and the O-shaped ring II 9. The pressure plate 4 and the pump cavity 1-2 of the pump body 1 are sealed by the O-shaped ring III 10 and the O-shaped ring IV 11, and a high-pressure chamber I12 is formed among the pressure plate 4, the pump body 1, the O-shaped ring III 10 and the O-shaped ring IV 11. One end of a shaft 14 is connected with a pump cover 2 through a sliding bearing, the other end of the shaft 14 is connected with a pump body 1 through the sliding bearing and sealed by an oil seal, the shaft 14 respectively and movably penetrates through a side plate 3 and a pressure plate 4, the shaft 14 is connected with a rotor 6 through a spline, blades 7 are movably inserted in blade grooves of the rotor 6, and a volume cavity 15 is formed between the blades 7 of the stator 5 and the rotor 6.

The working principle of the high-field high-volume-efficiency vane pump is as follows; fluid enters a pump cavity 1-2 of a pump body 1 from an oil inlet 1-1 to drive a rotor 6 to rotate, blades 7 rotate along with the rotor 6 and stretch radially in a groove of the rotor 6, so that the fluid is discharged from an oil outlet 1-3 to a system to be pressurized, the pressurized fluid flows into a second high-pressure chamber 13 from an oil through hole 3-1 of a side plate 3, an axial force towards the rotor 6 is generated on the back surface of the side plate 3 to resist an outward axial force generated by the fluid in a volume cavity 15 formed by a stator 5, the rotor 6 and the blades 7, and accordingly the phenomenon that gaps between the end surface of the rotor 6 and the end surfaces of the side plate 3 and the pressure plate 4 are enlarged due to axial deformation of the side plate 3 is avoided, and volume efficiency is reduced. The pressure plate 4, the pump body 1, the O-shaped ring three 10 and the O-shaped ring four 11 form a high-pressure cavity 12, high-pressure fluid acts on the end face of the pressure plate 4 in the high-pressure cavity 12, the generated axial force pushes the pressure plate 4, the stator 5 and the side plate 3 to the pump cover 2 side through oil holes of the pressure plate 4, the pump cover 2 is attached to the side plate 3, and the pressure plate 4 is tightly attached to the end face of the stator 5, the stator 5 is tightly attached to the end face of the side plate 3, and sealing is guaranteed. The pressure area of the second high-pressure chamber 13 and the side plate 3 is smaller than that of the pressure plate 4 in the first high-pressure chamber 12, so that the axial force generated in the first high-pressure chamber 12 is larger than that generated in the second high-pressure chamber 13, and the side plate 3 is attached to the pump cover 2. The axial force generated by the second high-pressure chamber 13 reaches a certain value, the side plate 3 can generate micro deformation, the axial gap between the stator 5 and the rotor 6 is filled, and the volume efficiency is improved.

Claims (1)

1. A high-pressure high-volumetric-efficiency vane pump comprises a pump body (1) and a pump cover (2), and is characterized in that two step type oil through holes (3-1) are formed in the end face of a side plate (3), the oil through holes (3-1) are pore passages for communicating the side plate (3) with a high-pressure chamber II (13), and the high-pressure chamber II (13) is formed among the side plate (3), the pump cover (2), an O-shaped ring I (8) and the O-shaped ring II (9).

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