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A plunger pump distribution plate

A valve plate, plunger pump technology, applied in the field of hydraulic components, can solve the problems of non-adaptive flow adjustment, rigid transition adjustment, throttle damping hole groove speed change and other problems

Active Publication Date: 2017-03-01
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can avoid the defects of rigid transition adjustment of throttling damping hole slot due to the change of plunger pump speed and non-adaptive adjustment of flow rate due to the restriction of over-flow section to achieve an appropriate ratio of high and low pressure oil volume.

Method used

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  • A plunger pump distribution plate
  • A plunger pump distribution plate
  • A plunger pump distribution plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: A plunger pump valve plate, the whole is disc-shaped, see figure 1 , including a waist-shaped high-pressure oil discharge port 101 on one side, a waist-shaped low-pressure oil suction port 201 isolated from the former on the other side, and an installation positioning hole 3 near the outer peripheral side. The plunger pump flow plate is divided into blocks by oil discharge 1 and the oil-absorbing block 2 are spliced ​​together, and the oil-discharging block 1, see figure 2 , greater than oil-absorbing block 2, see image 3 and Figure 4 , the splicing positions are respectively located at the beginning and end edges of the waist-shaped low-pressure oil suction port 201, and the upper joint 102 of the oil discharge block 1 is overlapped above the lower joint 202 of the oil suction block, and the unloading of the upper joint 102 of the oil discharge block The load area is a downward slope with a slope of -0.5°. The highest point of the slope starts from t...

Embodiment 2

[0015] Embodiment 2: The structural principle is the same as that of Embodiment 1, and the difference is that. The upper joint 102 of the oil discharge block 1 is lapped above the lower joint 202 of the oil suction block. The unloading area of ​​the upper joint 102 of the oil discharge block is a downward slope with a slope of 0.5°, and the highest point of the slope starts from the center of the upper dead zone line, and descend to the minimum thickness of the joint 102 on the oil discharge block, that is, the lowest point of the downward slope, as shown in the grid area in the figure; the pre-compression area of ​​the joint 102 on the oil discharge block is an upward slope with a slope of 1 °, the lowest point of the slope begins at the minimum thickness of the joint 102 on the oil discharge block, and ends at the tangent line of the edge line at the beginning of the high-pressure oil discharge port, that is, the highest point of the upper slope, as shown in the slashed area ...

Embodiment 3

[0016] Embodiment 3: The structural principle is the same as that of Embodiment 2, the upper joint 102 of the oil discharge block 1 is overlapped above the lower joint 202 of the oil absorption block, and the unloading area of ​​the upper joint 102 of the oil discharge block is a downward slope with a slope of - 0.5°, the highest point of the slope starts from the center line of the upper dead zone, and descends to the minimum thickness of the upper joint 102 of the oil discharge sub-block, that is, the lowest point of the lower slope, as shown in the grid area in the figure; the upper joint 102 of the oil discharge sub-block The pre-compression zone of the pump is an upward slope with a slope of 0.5°. The lowest point of the slope begins at the minimum thickness of the upper joint 102 of the oil discharge block, and ends at the tangent line of the edge line at the beginning of the high-pressure oil discharge port, that is, the highest point of the upward slope, as shown in the ...

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Abstract

The invention relates to the technical field of hydraulic components, in particular to a plunger pump thrust plate. The whole of the plunger pump thrust plate is in the shape of a disc, and the plunger pump thrust plate comprises waist-shaped high pressure oil discharge outlets, waist-shaped low pressure oil suctions and installation location holes, wherein the waist-shaped high pressure oil discharge outlets formed in one side of the plunger pump thrust plate, the waist-shaped low pressure oil suctions are formed in the other side of the plunger pump thrust plate, the waist-shaped high pressure oil discharge outlets and the waist-shaped low pressure oil suctions are formed in an isolated mode, and the installation location holes are formed in the side close to the periphery; the plunger pump thrust plate is formed by splicing an oil discharge block and an oil suction block, the splicing positions correspond to the start end edge and the tail end edge of the each waist-shaped low pressure oil suction, an oil discharge block upper connector is connected to the upper portion of an oil suction block lower connector in a lapped mode, and an unloading area of the oil discharge block upper connector is a slope surface which inclines downwards; a prepressing area of the oil discharge block upper connector is a slope surface which inclines upwards. According to the plunger pump thrust plate, the layout is reasonable, and special treatment processing aims at particular portions of the thrust plate can be convenient; based on hydrodynamic pressure lubrication requirements, by means of the thrust plate, the leakage can be effectively reduced, the thrust vibration and the noise are reduced, and the occurrence of the cavitation erosion is reduced.

Description

technical field [0001] The invention relates to the technical field of hydraulic components, in particular to a valve plate for a plunger pump. Background technique [0002] The oil film in the distribution pair of the plunger pump has the characteristics of lubricating and sealing at the same time, that is, it needs to seal the compression chambers of each plunger and provide dynamic and static pressure lubrication for the high rotation of the axial support cylinder. The development of high-speed and high-pressure plunger pumps is currently severely restricted by the lubrication and sealing characteristics of the distribution pair, which greatly affects the reliability and service life of the plunger pump. Many studies have analyzed the large pressure difference between the suction and discharge ports and the pressure on the distribution plate. Slots are provided to reduce cavitation and vibration noise, but rarely cause increased leakage. The use of dynamic pressure seali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B53/00
Inventor 彭旭东马晓明孟祥铠
Owner ZHEJIANG UNIV OF TECH