Fluid pump
A fluid pump, the first fluid technology, applied in the direction of pumps, pump components, rotary piston pumps, etc., can solve the problems of electric oil pump product cost rise, competitiveness decline, high-pressure oil leakage, etc., to improve sealing performance and reliability , the effect of improving market competitiveness and reducing pressure
Pending Publication Date: 2022-04-12
常州嵘驰发动机技术有限公司
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Problems solved by technology
[0004] However, there will be a large amount of high-pressure oil that flows from the high-pressure chamber through the gap between the pump body and the base to accumulate on the inner side of the sealing ring, which creates a large pressure on the sealing ring, and there is a risk of high-pressure oil leakage
Therefore, expensive materials must be used for the sealing ring, which increases the cost of electric oil pump products and reduces the competitiveness
Method used
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[0037] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0038] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the same time, terms such as "upper"...
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The invention provides a fluid pump, which is provided with a fluid inlet and a fluid outlet, and comprises a base (1); the pump body (2) is axially assembled with the base (1) to form a cavity (23); a cavity (23) is formed in the base (1), a base negative pressure chamber (14) is formed in the cavity (23), a pump body negative pressure chamber (27) is formed in the pump body (2), and the fluid pump further comprises a backflow mechanism. The backflow mechanism leads leakage fluid between axial end faces of the base (1) and the pump body (2) which are assembled with each other to the fluid inlet or the base negative pressure chamber (14) or the pump body negative pressure chamber (27). Oil pressure at the sealing ring can be reduced, and the sealing performance of the fluid pump is improved.
Description
technical field [0001] The invention relates to a fluid pump, in particular to a return mechanism of the fluid pump. Background technique [0002] A fluid pump typically consists of a base, a pump body and, in electric fluid pumps, an electric motor for driving the active rotor. When the pump is started, the fluid is sucked in and then pumped out. During the working process of the pump, the fluid sucked into the pump will flow into the gap between the base and the pump body or the motor and the pump body, causing leakage. [0003] For example, Chinese Patent Publication CN105298837A discloses an electric oil pump, wherein a sealing ring is provided between the pump body and the base to prevent high-pressure oil from leaking. [0004] However, there will be a large amount of high-pressure oil accumulation flowing from the high-pressure chamber through the gap between the pump body and the base inside the sealing ring, which will form a large pressure on the sealing ring, and...
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IPC IPC(8): F04C2/10F04C11/00F04C15/00
Inventor 杨鲁川
Owner 常州嵘驰发动机技术有限公司