Four-line synchromesh spring compensation combination pump

Abstract

The invention discloses a four-line synchromesh spring compensation combination pump, comprising a pump body 4, a rotor shaft 1 mounted on a central through hole 41 of the pump body 4 and a driven rotor 2 mounted on an eccentric semi-hole 42 of the pump body 4; an eccentric end cover 5 is mounted on the outer end surface of the eccentric semi-hole 42 and hermetically fixed through at least three screws 8; the outer end surface of the driven rotor 2 is adhered to the front plane of a compensation plate 6; and a location pin 7 and a tower-shaped spring 9 are mounted between the back surface of the compensation plate 6 and the eccentric end cover 5. The rotor shaft 1 and the driven rotor 2 are capable of synchronously generating four axially-extending sealing belts; one side of the front plane of the compensation plate 6 is always clung to the outer end surfaces of two rotors through the supporting bounce of the tower-shaped spring 9; therefore, the inner end surfaces of the two rotors are also clung to the bottom surface 40 of the eccentric semi-hole. The formed dynamic spaces A, B, C and D are synchronously endowed with end surface wear sealing compensation and radial wear sealing compensation, and the long-time excellent movable isolation seal state between the high pressure cavity and the low pressure cavity can be realized.

Description

technical field [0001] The invention belongs to the field of mechanical engineering, and the international patent classification is F04D non-variable pump, which relates to an energy conversion volumetric pump which converts mechanical energy into liquid pressure energy, especially a four-wire synchronous meshing spring compensation combination pump. Background technique [0002] The main structural forms of known positive displacement pumps are: plunger pump, screw pump, Roots pump and sliding vane pump. As a positive displacement pump, it has the advantage of high efficiency, but its efficiency is obviously reduced after long-term wear and tear. The main reason for the above defects is that the end face movable isolation between the high-pressure chamber and the low-pressure chamber cannot effectively seal. If the tolerance size of the end face is too small, it is easy to be stuck due to thermal expansion. If the tolerance size of the end face is too large, it will not be ...

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Problems solved by technology

) to collect global engineering science and technology papers, and there has never been a positive displacement pump that can simultaneously have end face wear seal compensation and radial wear seal compensation

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