Multistage cycloid gear pump
A cycloidal gear and gear pump technology, which is applied to pumps, rotary piston pumps, rotary piston machines, etc., can solve the problems of high installation space requirements, cracked edge of the pump cover, long length of multi-cycloid gear pumps, etc. , to achieve the effect of reducing the number, increasing reliability, and reducing the requirements of installation space
Inactive Publication Date: 2015-01-07
HARBIN DONGAN ENGINE GRP
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Problems solved by technology
This structure is easy to break the edge of the pump cover. At the same time, the complex structure causes the length of the multi-line cycloid gear pump to be longer in the axial direction, so the requirements for installation space are higher.
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[0010] As shown in the figure, the multistage cycloidal gear pump includes a casing 2, a pump cover 1, an inner rotor 8, an outer rotor 7, an eccentric sleeve 6, an interstage casing 3, and an anti-rotation pin 5. The inner rotor 8 is installed on the rotor shaft 4 and meshed with the outer rotor 7, the outer rotor 7 is provided with an eccentric sleeve 6, the outer rotor 7 can rotate in the eccentric sleeve 6, the inner rotor 8, the outer rotor 7, and the eccentric sleeve 6 are multiple, each An interstage casing 3 is arranged between the eccentric sleeves 6; an anti-rotation pin 5 is fixedly installed on the pump cover 1, and the anti-rotation pin 5 connects the interstage casing 3, the eccentric sleeve 6, the casing 2 and the pump cover 1 Connected in series, the pump cover 1 is installed on the casing 2, and an adjusting gasket 9 is arranged between the casing 2. The inner surface of the pump cover 1 cooperates with the end surface of the outermost eccentric sleeve 6, and t...
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The invention relates to a multistage cycloid gear pump. The multistage cycloid gear pump comprises a shell, a pump cover, a plurality of inner rotors, a plurality of outer rotors, a plurality of eccentric sleeves, inter-stage shells and an anti-rotation pin, wherein the inner rotors are mounted on a rotor shaft and are meshed with the outer rotors; the eccentric sleeves are arranged at the outer parts of the outer rotors; the outer rotors are capable of rotating in the eccentric sleeves; each inter-stage shell is arranged between every two adjacent eccentric sleeves; the anti-rotation pin is fixedly mounted on the pump cover which is mounted on the shell; the inner surface of the pump cover is matched with the end surface of the eccentric sleeve on the outmost side; when mounted on the shell, the pump cover is deformed due to the counter-acting force generated by contact between the pump cover and the end surface of the eccentric sleeve. According to the multistage cycloid gear pump, the structures of dish-shaped sheets and upper inter-stage shells are omitted on the basis of the original structure; the length of the pump is effectively reduced; the requirement on the mounting space is reduced; meanwhile, the number of parts is reduced, so that the use reliability is effectively improved.
Description
technical field [0001] The invention relates to a multistage cycloidal gear pump. Background technique [0002] The cycloidal gear pump rotates around the pump shaft through the inner rotor driven by the pump shaft, and the outer rotor rotates in the eccentric sleeve with a certain eccentricity. The inner and outer rotors complete pump oil suction and oil discharge due to different speeds. The principle like figure 1 shown. A plurality of inner and outer rotors and eccentric sleeves are arranged, and an interstage casing is arranged between the eccentric sleeves, thus forming a multistage cycloidal gear pump. [0003] In order to ensure the normal operation of the multi-stage cycloidal gear, it is necessary to ensure that the eccentric sleeve and the interstage housing do not rotate in the circumferential direction, that is, it is required to apply sufficient axial preload to the eccentric sleeve and the interstage housing in the axial direction. A general solution such a...
Claims
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IPC IPC(8): F04C2/10
CPCF04C2/10F04C2230/601
Inventor李天罡冯欣颖林军杨云鹏任连明
OwnerHARBIN DONGAN ENGINE GRP