Hydraulic pump
A technology for hydraulic pumps and liquid inlets, which is applied in the field of hydraulic pumps and can solve the problems of large seal wear, high precision, and large resistance
Inactive Publication Date: 2007-09-19
段小平
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Problems solved by technology
[0004] Traditional dynamic pumps usually require high speed to drive, and are not suitable for low-speed or unstable speed occasions; while traditional positive displacement pumps are usually piston-type, which has disadvantages such as large resistance, large wear of seals, and high precision.
Method used
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[0026] A preferred embodiment of the present invention is shown in FIGS. 1 to 13 . It can be seen from the figure that the main components of the hydraulic pump 100 include a housing 101 , a right end cover 102 , a left end cover 103 , a drive shaft 104 , a kneading wheel 105 , and an isolation limiter 107 .
[0027] As can be seen from Fig. 6 and Fig. 7, there are left and right cavities 106 for installing the kneading wheel in the housing 101. The diameter of the cavity is greater than that of the kneading wheel, so that the kneading wheel is installed in the cavity When in the body, you can rub it in it.
[0028] The structure of the kneading wheel 105 used in this embodiment is shown in FIG. 8 to FIG. 11 , wherein a limiting groove 110 is provided on the ring surface of the kneading wheel 105 . Correspondingly, an isolation limiter 107 is provided on the inner wall of the cavity, which extends into the limit groove, is used to limit the kneading wheel so that it cannot ro...
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The invention relates to a hydraulic pump, comprising a casing, drive shaft and a kneading wheel. The casing is provided with a cavity corresponding to the kneading wheel with a larger diameter than the kneading wheel. A limiting groove is provided on ring surface of the kneading wheel, an isolation limiting member protruding to the limiting groove is provided in the cavity inner wall, which is used for stopping rotation of the kneading wheel and provides certain action margin to the kneading wheel. A eccentric structure is provided in position corresponding to the cavity on the drive shaft, the kneading wheel is nested in the eccentric position in a loose running fit, kneading of the kneading wheel is generated by rotation of the drive shaft, furthermore makes outer ring surface of the kneading wheel squeezing the inner wall of the cavity in turns. A liquid inlet is provided on casing in one side of the isolation limiting member, and a liquid outlet is provided on casing in another side, liquid loaded from the inlet is capable of flowing to the outlet along gaps between the kneading wheel and the inner wall of the cavity by kneading-extruding of the kneading wheel, which outputs highly pressurised liquid. The hydraulic pump of the invention is specially adapted for low rotary speed or unstable situations, for example in a wind power electricity generating device, and the liquid is pressurized.
Description
technical field [0001] The present invention relates to a hydraulic pump, more specifically, to a kneading hydraulic pump which can be used for pressurizing liquid in the occasion of low or unstable rotating speed. Background technique [0002] There are many types of hydraulic pumps, which can be divided into: (1) Power pumps, also called impeller pumps or vane pumps, rely on the power of the rotating impeller to transmit energy to the liquid continuously, so that The kinetic energy and pressure energy of the liquid are increased, and then the kinetic energy is converted to pressure energy by the extrusion chamber. (2) Positive displacement pump, which relies on periodic changes in the volume of the sealed working space containing the liquid, periodically transfers energy to the liquid, increases the pressure of the liquid, and then forcibly discharges the liquid. [0003] Among them, positive displacement pump is widely used, and positive displacement hydraulic pump reali...
Claims
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IPC IPC(8): F04C13/00
CPCF04C2/46
Inventor 段小平
Owner 段小平