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Swash plate type valve distributing high-pressure pure water plunger pump

A swash plate type, high-pressure technology, which is applied to variable capacity pump parts, parts of pumping devices for elastic fluids, pumps, etc., can solve the problem of large cylinder running swing, large leakage of pure water plunger pumps, etc. problems, to achieve smooth operation, reduce wear resistance requirements, good sealing performance and suction performance

Inactive Publication Date: 2011-01-19
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a swash plate type valve distribution high pressure pure water plunger pump, which solves the problems of large leakage of the pure water plunger pump and large swing of the cylinder body, and realizes the high pressure of the swash plate type pure water plunger pump

Method used

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  • Swash plate type valve distributing high-pressure pure water plunger pump
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  • Swash plate type valve distributing high-pressure pure water plunger pump

Examples

Experimental program
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Embodiment 1

[0029] Such as figure 1 As shown, the present invention includes a pump body 26, a main shaft 28 arranged in the pump body 26, and a front end cover 1 installed on the main shaft 28 from left to right, a swash plate-slider mechanism, a ball joint 29, a plunger- Cylinder mechanism, distribution valve and rear end cover 18. The front end cover 1 and the rear end cover 18 are respectively fixed on the left and right sides of the pump body 26 . The swash plate-slider mechanism includes a swash plate 3 , a return plate 5 , and an odd number of slide shoes 4 . Wherein, the left side of the swash plate 3 is connected with the front end cover 1 through the pin 2, and the right side surface is an inclined plane. An odd number of sliding shoes 4 are evenly arranged in the return disk 5 along the circumferential direction, and the sliding shoes 4 are hinged to the plunger 6 .

[0030] The plunger-cylinder mechanism includes a cylinder 19 and a plunger 6 , the inner hole of the cylinde...

Embodiment 2

[0044] The structure in this embodiment is basically the same as that in Embodiment 1, the only difference is that the water inlet form of the suction valve is different: in this embodiment, the suction valve 11 and the pressure discharge valve 12 are arranged at the tail of the cylinder body 19 along the radial direction of the main shaft , but the valve port 31 of the suction valve 11 opens in the axial direction. Compared with the distribution valve structure of the first embodiment, when the low-pressure water enters the common cavity 32 of the distribution valve from the valve port 31 of the suction valve 11, it is not affected by the centrifugal force of the rotation of the cylinder body 19, and the water absorption effect is better; compared with the distribution valve of the third embodiment structure, the cylinder body 19 has a smaller volume.

Embodiment 3

[0046] The structure in this embodiment is basically the same as that in Embodiment 1, the only difference is that the arrangement of the suction valves is different: in this embodiment, the extrusion valve 12 is radially arranged, the suction valve 11 is axially arranged at the tail of the cylinder 19, and the suction The valve port 31 of the valve 11 is open in the axial direction, and the valve port 31 communicates directly with the water suction port 13 . Compared with Embodiment 1, when the low-pressure water enters the common chamber 38 of the distribution valve from the valve port 31 of the suction valve 11, it is not affected by the centrifugal force of the rotation of the cylinder body 19, and the water absorption effect is better.

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PUM

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Abstract

The invention relates to a pump, in particular to a swash plate type valve distributing high-pressure pure water plunger pump. The plunger pump mainly comprises a main shaft, a swash plate-skid shoe mechanism, a plunger-cylinder body mechanism and a valve distributing mechanism, wherein the main shaft drives the cylinder body and the valve distributing mechanism to rotate together through a spline, and the plunger rotates with the cylinder body and reciprocates opposite to the cylinder body; the plunger drives the skid shoe articulated with the plunger to slide on the surface of the swash plate; a suction valve and a delivery valve are sequentially switched with a plunger cavity to realize the functions of water absorption and water discharge of the pump; the swash plate of the invention does not rotate, thereby avoiding the swing of the cylinder body caused by rotation of the swash plate and unbalanced quality; a sliding bearing on the main shaft, a large sliding bearing at the periphery of the cylinder body and a sliding bearing at the tail of the cylinder body relieve the swing of the pump body caused by the flexible bending of the main shaft and the swing of the cylinder body, thereby enabling the plunger pump to operate smoothly; and in the invention, a distributing valve is used for replacing a distributing plate, and a pair of critical friction components are reduced, thereby realizing high pressure of the swash plate type pure water plunger pump.

Description

technical field [0001] The invention belongs to pumps, in particular to a high-pressure pure water plunger pump with swash plate valve distribution. Background technique [0002] As the core component of the hydraulic transmission system, the hydraulic pump is designed and developed, which is the key to the development of hydraulic transmission technology. At present, there are several types of hydraulic pumps commonly used in the world, such as plunger type, vane type, and gear type. In contrast, the vane of the vane pump is in line contact with the stator and the two gears of the gear pump, the contact PV value is high, and the sealing effect is poor; the key friction pairs in the plunger pump (such as plunger / cylinder hole, sliding shoe / swash plate, flow distribution plate / cylinder end face, etc.) are mostly surface contact, and the PV value under the same working conditions is relatively small, which can realize static pressure support, and the sealing effect is goo...

Claims

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Application Information

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IPC IPC(8): F04B1/22F04B53/16F04B53/10F04B53/00
Inventor 聂松林董武涛阮俊胡志威温建东喻国哲
Owner BEIJING UNIV OF TECH