Digital pulse variable axial plunger pump

An axial piston pump, digital pulse technology, applied in the direction of pump, multi-cylinder pump, liquid variable capacity machinery, etc., can solve the problems affecting the working efficiency of the piston pump, low sensitivity, poor stability, etc., to achieve no lag, Good stability and high work efficiency

Inactive Publication Date: 2010-06-09
QIDONG DONGFANG HIGH PRESSURE OIL PUMP FACTORY
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AI-Extracted Technical Summary

Problems solved by technology

The existing variable displacement plunger pump is to adjust the handle arranged on the flange to drive the adjustment screw to rotate to change the inclination angle of the return plate, change the stroke length of the plunger in the pump cylinder, and...
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Method used

As shown in Figure 1, the digital pulse variable axial plunger pump of the present invention comprises a pump body 1, an oil distribution plate 2, a cylinder body 3, a plunger 4 arranged in the cylinder body 3, and is installed at the end of the plunger 4 Sliding shoe 5, return disc 6, pump casing 7, transmission shaft 8 and variable control device 9, cylinder body 3 is installed on the end of transmission shaft 8, and the end of transmission shaft 8 is fixed on the end of return disc 6 by steel ball 10 On the center line, the variable control device 9 includes a variable head 11, a thrust plate 12, a variable shaft 13 and an adjusting screw 14. The axial piston pump is also provided with a transition body 16, and one end of the transition body 16 is fixedly connected to the flange 15 , the other end is connected with a linear stepper motor 18, the main shaft of the linear stepper motor 18 is fixedly connected with the taper pin 17, the other end of the taper pin 17 is connected with the adjusting scr...
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Abstract

The invention discloses a digital pulse variable axial plunger pump which comprises a pump body, an oil distribution disk, a cylinder body, a plunger arranged in the cylinder body, a piston shoe arranged on the end part of the plunger, a set plate, a pump shell, a transmission shaft and a variable control device, wherein the cylinder body is arranged on the end part of the transmission shaft, and the end part of the transmission shaft is fixed on a central line of the set plate through a steel ball; and the variable control device comprises a variable head, a thrust plate, a variable shaft and an adjusting screw rod. The axial plunger pump is characterized by also comprising a transition body, wherein one end of the transition body is fixedly connected with a flange plate, while the other end is connected with a linear stepping motor; a spindle of the linear stepping motor is fixedly connected with one end of a connecting piece, while the other end of the connecting piece is connected with the adjusting screw rod; and the linear stepping motor is connected with an electronic inductor. The axial plunger pump has the advantages of high control sensitivity, high frequency response, no lag, good stability and high working efficiency.

Application Domain

Positive-displacement liquid enginesMulti-cylinder pumps

Technology Topic

Plunger pumpInductor +9

Image

  • Digital pulse variable axial plunger pump
  • Digital pulse variable axial plunger pump

Examples

  • Experimental program(1)

Example Embodiment

[0012] Such as figure 1 , The digital pulse variable axial plunger pump of the present invention includes a pump body 1, an oil distribution plate 2, a cylinder body 3, a plunger 4 arranged in the cylinder body 3, a sliding shoe 5 installed at the end of the plunger 4, and a return stroke Disk 6, pump casing 7, drive shaft 8 and variable control device 9. Cylinder block 3 is installed at the end of drive shaft 8. The end of drive shaft 8 is fixed on the center line of return disk 6 by steel ball 10, variable control The device 9 includes a variable head 11, a thrust plate 12, a variable shaft 13 and an adjusting screw 14. The axial piston pump is also provided with a transition body 16. One end of the transition body 16 is fixedly connected with the flange 15 and the other end is connected with a straight line Stepper motor 18, the main shaft of the linear stepper motor 18 is fixedly connected with the taper pin 17, the other end of the taper pin 17 is connected with the adjusting screw 14, the linear stepper motor 18 is connected with the rotary encoder 19, and the transition body 16 is connected with the flange. An O-ring 20 is arranged between 15. In the digital pulse variable axial plunger pump of the present invention, the plunger 4 reciprocates along the inclined surface of the thrust plate 12 to complete the oil suction and discharge work. The linear stepping motor 18 works according to the instructions of the rotary rotary encoder 19 and rotates the adjusting screw 14. The variable shaft 13 connected with the adjusting screw 14 is moved down or up, thereby changing the slope angle of the variable head 11 to change the pump oil volume. The input digital pulse flow rate is proportional to the pump output flow rate. The present invention adopts rotary encoding The controller controls the linear stepping motor, which has better stability than the traditional variable axial piston pump, high frequency response, no lag, and can communicate well with PLC and PCC machines for remote control.

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Description & Claims & Application Information

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