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A device capable of adjusting the flow rate of a quantitative hydraulic pump and a method for adjusting the flow rate thereof

A quantitative hydraulic and pump flow technology, applied in pump devices, pumps, pump control, etc., can solve problems such as unstable pressure, fragile bearings, short life, etc., to solve pressure instability, high cost, and innovative ideas. clever effect

Active Publication Date: 2019-09-03
姚长水
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a device capable of adjusting the flow rate of a quantitative hydraulic pump and a method for adjusting the flow rate. Too stable, short life, easy to break the bearing, loud noise and other problems

Method used

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  • A device capable of adjusting the flow rate of a quantitative hydraulic pump and a method for adjusting the flow rate thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Assuming that the displacement of the pump A2 is greater than that of the pump B3, that is, M1>M2, the output speed variables of the two output ends of the differential 1 are equal, that is, ΔP1=ΔP2. When it is necessary to increase the overall output flow of the system, the adjustment mechanism 15 is adjusted to increase the output diameter of the pipeline C7 and decrease the output diameter of the pipeline D8. As a result, the flow at the outlet of pipeline C7 increases and the internal pressure decreases, the flow at the outlet of pipeline D8 decreases and the internal pressure increases, and then the rotational resistance of the shaft connecting differential 1 to pump A2 decreases, making the differential 1 The rotation resistance of the shaft connected to pump B3 increases, resulting in an increase in the speed of the shaft connected to differential 1 and pump A2, and a decrease in the speed of the shaft connected to differential 1 and pump B3. Since the displaceme...

Embodiment 2

[0049] Assuming that the displacement of the pump A2 is greater than that of the pump B3, that is, M1>M2, the output speed variables of the two output ends of the differential 1 are equal, that is, ΔP1=ΔP2. When it is necessary to reduce the overall output flow of the system, the adjustment mechanism 15 is adjusted to reduce the output diameter of the pipeline C7 and increase the output diameter of the pipeline D8. As a result, the flow at the outlet of pipeline C7 decreases and the internal pressure increases, the flow at the outlet of pipeline D8 increases and the internal pressure decreases, and then the rotation resistance of the shaft connecting differential 1 to pump A2 increases, making differential 1 The rotational resistance of the shaft connected to pump B3 decreases, resulting in a decrease in the rotational speed of the shaft connected to differential 1 and pump A2, and an increase in the rotational speed of the shaft connected to differential 1 and pump B3. Since ...

Embodiment 3

[0051] Assuming that the displacement of pump A2 is the same as that of pump B3, that is, M1=M2, the output rotational speed variable value of the output end of differential 1 connected with pump A2 is greater than the output rotational speed of the output end of differential 1 connected with pump B3 Variable value, namely ΔP1>ΔP2, when the overall output flow of the system needs to be increased, adjust the regulating mechanism 15 to increase the output diameter of pipeline C7 and decrease the output diameter of pipeline D8. As a result, the flow at the outlet of pipeline C7 increases and the internal pressure decreases, the flow at the outlet of pipeline D8 decreases and the internal pressure increases, and then the rotational resistance of the shaft connecting differential 1 and pump A2 decreases, making the differential The rotational resistance of the shaft connecting differential 1 to pump B3 increases, resulting in an increase in the rotational speed of the shaft connecti...

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Abstract

The invention discloses a device capable of adjusting flow rate of a quantitative hydraulic pump and a flow rate adjusting method thereof. The device comprises a driving mechanism, wherein a differential is connected to the driving mechanism, and the driving mechanism is connected to the input end of the differential; a pump A is connected to one output end of the differential, and a pump B is connected to the other output end of the differential; a pipeline A is connected to an oil inlet of the pump A, and a pipeline C is connected to an oil outlet of the pump A; a pipeline B is connected toan oil inlet of the pump B, and a pipeline D is connected to an oil outlet of the pump B; an adjusting mechanism is connected to the other end of each of the pipeline B and the pipeline D; a liquid draining pipe is connected to the other end of each adjusting mechanism; a tee joint is connected to the other end of each of the pipeline A and the pipeline B; and the other end of each tee joint is connected to a liquid inlet pipe.

Description

technical field [0001] The invention belongs to the field of hydraulic pumps, and in particular relates to a device capable of adjusting the flow of a quantitative hydraulic pump and a flow regulating method thereof. Background technique [0002] In the prior art, hydraulic pumps can be classified into fixed displacement pumps and variable displacement pumps according to displacement. A fixed displacement pump is a hydraulic pump whose output flow is constant under the condition of constant speed, and a variable displacement pump is a hydraulic pump whose output flow is variable under the condition of constant speed. [0003] After the speed of the quantitative pump is selected, its flow cannot be adjusted. Therefore, in the case of high system pressure, the quantitative pump often controls its own flow by unloading, which causes energy waste, increases the heat of hydraulic oil, and affects the hydraulic pressure. adverse effects on the system. The output flow of the vari...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B23/04F04B49/20F04B17/03F17D3/01
CPCF04B17/03F04B23/04F04B49/20F17D3/01
Inventor 姚长水
Owner 姚长水