an oil pump
A technology for oil pumps and pump bodies, applied in the field of oil pumps, can solve problems such as damage and deformation of support shafts, and achieve the effects of not being easily deformed or damaged, with small force and large moment of inertia
Active Publication Date: 2020-04-10
浙江平柴泵业有限公司
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
Oil pumps usually increase the transmission efficiency of the oil by increasing the rotation speed of the gears. Therefore, in order to improve the transmission efficiency, the rotation speed of the support shaft is accelerated, and the torsional force it receives is further increased. deformed or damaged
Method used
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[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. Wherein the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "bottom" and "top "Face", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
[0020] refer to Figures 1 to 6 As shown, an oil pump of this embodiment includes a pump body 1, a pump cover 2 detachably connected to the pump body 1, an inner rotor 3 and an outer rotor 4 that mesh with each other, and a support shaft 5 for supporting the inner rotor 3 The pump body 1 is provided with an accommodating cavity 11 for accommodating the inner rotor 3 and the outer rotor 4, the inner rotor 3 and the outer rotor 4 are arranged eccentrica...
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The invention discloses a fuel pump. According to the key point of technical scheme, the fuel pump comprises a pump body, a pump cover in detached connection with the pump body, an inner rotor, an outer rotor and a supporting shaft used for supporting the inner rotor, wherein the inner rotor and the outer rotor are meshed with each other; an accommodating cavity for accommodating the inner rotor and the outer rotor is arranged in the pump body; and the inner rotor and the outer rotor are eccentrically arranged. The fuel pump is characterized in that the outer edge face of the outer rotor is fixedly connected with the outer wall of the accommodating cavity, the inner rotor is in coaxial rotating connection with the supporting shaft; a fixed shaft for supporting the pump body is arranged onthe side, opposite to the pump cover, of the pump body; the fixed shaft is in coaxial rotating connection with the pump body; an oil inlet is formed in the fixed shaft; the fixed shaft is fixedly connected with the end, opposite to the pump cover, of the supporting shaft; a transmission gear for driving the pump body to rotate is coaxially and fixedly connected on the pump body; and in the state that the pump body is driven to rotate by the transmission gear, the outer rotor is used for driving the inner rotor to rotate. The fuel pump has small action force on the supporting shaft under a working state, and the supporting shaft cannot be easily broken.
Description
technical field [0001] The invention relates to the field of pumps, in particular to an oil pump. Background technique [0002] In order to ensure the amount of circulating oil in the engine lubrication system, the oil pump sucks the oil from the oil pan to the main oil passage to provide the necessary medium for the lubrication of various parts of the engine. The internal meshing gear pump is a pump structure of the oil pump. The oil pump of this structure drives the driven outer rotor to rotate in the same direction through the active inner rotor. Engine oil, at the oil outlet, the gears are constantly embedded and meshed to squeeze the oil out. [0003] The active inner rotor is usually coaxially fixedly connected with a support shaft for driving the inner rotor to rotate, because the support shaft not only drives the inner rotor to rotate, but also drives the outer rotor to rotate through the inner rotor, and the outer rotor needs to overcome the outer rotor during the ...
Claims
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IPC IPC(8): F16N13/20
CPCF16N13/20
Inventor 陈贤明陈贤建赵祯年
Owner 浙江平柴泵业有限公司