Volume variation structure for volume pump and working method
A volume change, volumetric pump technology, applied in the field of volumetric pumps, can solve problems such as reducing the working efficiency of the pump, affecting the service life of components, affecting the efficiency and life of the pump, and achieving the effect of extending the service life, reducing friction, and improving work efficiency
Pending Publication Date: 2018-12-11
SHANDONG UNIV
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Problems solved by technology
However, whether it is a reciprocating pump based on a piston-cylinder structure or a gear pump and a screw pump based on a rotor pump casing structure, in order to ensure the sealing of the confined space, the sliding friction between the piston and the cylinder, or between the rotor and the pump casing cannot be avoided.
On the one hand, this sliding friction causes friction resistance, which reduces the working efficiency of the pump; on the other hand, the wear caused by sliding friction affects the service life of related components.
[0003] In a traditional positive displacement pump, there is a pair of contradictions in the positive pressure between the components that construct the closed space, such as the cylinder and piston, the rotor and the pump casing: on the one hand, in order to ensure the sealing, there must be a certain positive pressure between them ; On the other hand, if the positive pressure is too large, it will bring a lot of friction, which will affect the efficiency and life of the pump
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[0030] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0031] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.
[0032] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present i...
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The invention relates to a volume variation structure for a volume pump and a working method. The volume variation structure comprises a plurality of rotors, the plurality of rotors form a polyhedralstructure with an even number of edges, each rotor comprises a rotating portion and a sealing portion which are connected into a whole, the positions between the rotating portions of the adjacent rotors are provided with openings to form an opening surface of the polyhedral structure, the sealing portions of the adjacent rotors contact with each other to form a sealing surface of the polyhedral structure, the rotating portions are provided with arc surface structures, the openings in the opening surface are internally provided with pistons, and the pistons make contract with the correspondingrotating portions through the corresponding arc surface structures. According to the volume variation structure, rolling friction is adopted to replace sliding friction, the work efficiency of the volume pump is improved, and the service life of related components is prolonged.
Description
technical field [0001] The invention relates to the technical field of displacement pumps, in particular to a volume change structure and working method for a displacement pump. Background technique [0002] The volumetric pumps used in the fields of compressors, refrigerators, etc. at present utilize a closed space with a variable volume to realize the functions of compressing and transporting fluid. However, whether it is a reciprocating pump based on a piston-cylinder structure or a gear pump or a screw pump based on a rotor pump casing structure, in order to ensure the sealing of the confined space, the sliding friction between the piston and the cylinder, or between the rotor and the pump casing cannot be avoided. On the one hand, this sliding friction causes frictional resistance, which reduces the working efficiency of the pump. On the other hand, the wear caused by sliding friction affects the service life of related components. [0003] In a traditional positive di...
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IPC IPC(8): F04B39/00
CPCF04B39/0011
Inventor 马龙周元峰贺英张彩明
Owner SHANDONG UNIV