CN102434420A - Gas etching preventing distribution disk - Google Patents
Gas etching preventing distribution disk Download PDFInfo
- Publication number
- CN102434420A CN102434420A CN2012100108125A CN201210010812A CN102434420A CN 102434420 A CN102434420 A CN 102434420A CN 2012100108125 A CN2012100108125 A CN 2012100108125A CN 201210010812 A CN201210010812 A CN 201210010812A CN 102434420 A CN102434420 A CN 102434420A
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- China
- Prior art keywords
- pressure oil
- hole
- district
- thrust plate
- distribution disk
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Abstract
The invention relates to a gas etching preventing distribution disk, which comprises a distribution disk body, wherein a low-pressure oil absorption region and a high-pressure oil elimination region are arranged on the distribution disk and are mutually isolated and are symmetrical relative to a cross shaft of the distribution disk body. The gas etching preventing distribution disk is characterized in that a first hole and a second hole are arranged between the low-pressure oil absorption region and the high-pressure oil elimination region and are respectively communicated with a housing cavity of a plunger pump. The first hole is close to one side close to the low-pressure oil absorption region, the second hole is positioned on one side close to the high-pressure oil elimination region, and the pore diameter of the first hole is more than that of the second hole. The low-pressure oil absorption region is an arc-shaped groove, and the high-pressure oil elimination region is formed by a plurality of sections of waist-shaped grooves. The gas etching preventing distribution disk provided by the invention can prevent gas etching from occurring in a low-pressure region, and can realize the purposes of reducing noise and vibration and decreasing flow pulsation; and the noise can be reduced to reach about 5dB.
Description
Technical field
The present invention relates to a kind of anti-cavitation erosion thrust plate, especially a kind of thrust plate that is used on the plunger pump belongs to mechanical field.
Background technique
Thrust plate is one of pump vital part of axial plunger, and whether its design rationally will affect the noise and the vibration of whole pump.Present thrust plate main flow design proposal is to adopt oat tail groove structure; Size through the control dovetail groove reaches optimum noise abatement and effectiveness in vibration suppression; But the effect of this method is limited, because it keeps away the cavitation phenomenon that is caused when the zone of high pressure of unavoidable cylinder body plunger hole from thrust plate switches to low pressure area, cavitation erosion will cause the thrust plate low pressure area to produce a large amount of small bubble; The cylinder body plunger hole can siphon away and bring into the zone of high pressure with bubble when the low pressure area oil suction simultaneously; At this moment bubble can be in the cylinder body plunger hole moment bury in oblivion, cause great vibration and noise, the oil outlet of pump can produce tangible flow pulsation simultaneously.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the existing technology, a kind of anti-cavitation erosion thrust plate is provided, prevent that cavitation phenomenon is created in low pressure area, can realize noise abatement, vibration damping and reduce flow pulsation.
According to technological scheme provided by the invention; Said anti-cavitation erosion thrust plate; Comprise the thrust plate body, on said thrust plate body, offer low pressure oil suction district and high pressure oil extraction district, said low pressure oil suction district and high pressure oil extraction district are isolated mutually and symmetrical with respect to the transverse axis of thrust plate body; Characteristic is: between said high pressure oil extraction district and low oily oil suction district, be provided with first hole and second hole, first hole and second hole are connected with the shell chamber of plunger pump respectively.
Said first hole is positioned at the side near low pressure oil suction district, and said second hole is positioned at the side near high pressure oil extraction district, and the aperture in first hole is greater than the aperture in second hole.
Said low pressure oil suction district is a curve bath, and said high pressure oil extraction district is made up of the multistage kidney slot.
Anti-cavitation erosion thrust plate of the present invention can prevent that cavitation phenomenon is created in low pressure area, can realize noise abatement, vibration damping and reduce flow pulsation; Noise can be reduced to about 5dB.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a working state schematic representation of the present invention.
Embodiment
Below in conjunction with concrete accompanying drawing the present invention is described further.
As shown in the figure: anti-cavitation erosion thrust plate comprises thrust plate body 1, high pressure oil extraction district 2, cylinder body 3, piston shoes 4, plunger 5, low pressure oil suction district 6, first hole 7, second hole 8, elongated hole 9 etc.
The present invention includes thrust plate body 1, on said thrust plate body 1, offer low pressure oil suction district 6 and high pressure oil extraction district 2, said low pressure oil suction district 6 is a curve bath, and said high pressure oil extraction district 2 is made up of the multistage kidney slot; Said low pressure oil suction district 6 is isolated mutually and symmetrical with respect to the transverse axis of thrust plate body 1 with high pressure oil extraction district 2, is communicated with plunger pump suction port and plunger pump outlet zone of high pressure respectively; Between said high pressure oil extraction district 2 and low oily oil suction district 6, being provided with first hole 7 and 8, the first holes 7, second hole and second hole 8 is connected with the shell chamber of plunger pump through the elongated hole 9 that is positioned at thrust plate body 1 back side respectively; Said first hole 7 is positioned at the side near low pressure oil suction district 2, and said second hole 8 is positioned at the side near high pressure oil extraction district 2, and the aperture in first hole 7 is greater than the aperture in second hole 8.
Working principle of the present invention: when plunger pump is worked; Its plunger pump cylinder body 3 is around the center line rotation of thrust plate body 1; Sense of rotation is counterclockwise; Plunger hole in the cylinder body 3 can be from high pressure oil extraction district 2 beginnings successively through second hole 8, first hole 7 and low pressure oil suction district 6, get back to high pressure oil extraction district 2 then again, so circulation; The oil suction that when low pressure oil suction district 6, moves upward of plunger 5 and piston shoes 4 moves downward oil extraction when high pressure oil extraction district 2.When pump work during in high pressure oil extraction district 2; Cylinder body 3 plunger holes move to plunger hole and communicate at that moment with second hole 8 from high pressure oil extraction district 2; Because in cylinder body 3 plunger holes is high pressure oil, and second hole 8 is to lead in the shell chamber of pump, under the effect of high pressure pressure reduction; The air that is dissolved in the cylinder body 3 plunger hole mesohigh fluid will come out in abrupt release, is discharged in the shell chamber of pump; The aperture in first hole 7 is greater than the aperture in second hole 8; Be to finish in order to guarantee that these air can fully discharge; Cavitation phenomenon has taken place between cylinder body 3 plunger holes entering low pressure oil suction district 6 and bubble has been entered in the shell chamber like this; Just can not occur in low pressure oil suction district 6, burying in oblivion yet of bubble just can not occur in high pressure oil extraction district 2, realized noise abatement, vibration damping simultaneously and reduced the purpose of flow pulsation.
Claims (3)
1. prevent the cavitation erosion thrust plate for one kind; Comprise thrust plate body (1); On said thrust plate body (1), offer low pressure oil suction district (6) and high pressure oil extraction district (2), said low pressure oil suction district (6) and high pressure oil extraction district (2) are isolated mutually and symmetrical with respect to the transverse axis of thrust plate body (1); It is characterized in that: between said high pressure oil extraction district (2) and low oily oil suction district (6), be provided with first hole (7) and second hole (8), first hole (7) and second hole (8) are connected with the shell chamber of plunger pump respectively.
2. anti-cavitation erosion thrust plate as claimed in claim 1; It is characterized in that: said first hole (7) is positioned at the side near low pressure oil suction district (2); Said second hole (8) is positioned at the side near high pressure oil extraction district (2), and the aperture of first hole (7) is greater than the aperture of second hole (8).
3. anti-cavitation erosion thrust plate as claimed in claim 1 is characterized in that: said low pressure oil suction district (6) is a curve bath, and said high pressure oil extraction district (2) is made up of the multistage kidney slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100108125A CN102434420A (en) | 2012-01-13 | 2012-01-13 | Gas etching preventing distribution disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100108125A CN102434420A (en) | 2012-01-13 | 2012-01-13 | Gas etching preventing distribution disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102434420A true CN102434420A (en) | 2012-05-02 |
Family
ID=45982701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100108125A Pending CN102434420A (en) | 2012-01-13 | 2012-01-13 | Gas etching preventing distribution disk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102434420A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57171086A (en) * | 1981-04-13 | 1982-10-21 | Kawasaki Heavy Ind Ltd | Piston pump |
| CN201635992U (en) * | 2010-02-10 | 2010-11-17 | 重庆江陵仪器厂 | Oil distribution tray of axial variable plunger pump |
| JP4805368B2 (en) * | 2009-01-28 | 2011-11-02 | 川崎重工業株式会社 | Valve plate and piston pump or motor provided with the same |
| CN202468191U (en) * | 2012-01-13 | 2012-10-03 | 无锡威孚精密机械制造有限责任公司 | Cavitation-proof port plate |
-
2012
- 2012-01-13 CN CN2012100108125A patent/CN102434420A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57171086A (en) * | 1981-04-13 | 1982-10-21 | Kawasaki Heavy Ind Ltd | Piston pump |
| JP4805368B2 (en) * | 2009-01-28 | 2011-11-02 | 川崎重工業株式会社 | Valve plate and piston pump or motor provided with the same |
| CN201635992U (en) * | 2010-02-10 | 2010-11-17 | 重庆江陵仪器厂 | Oil distribution tray of axial variable plunger pump |
| CN202468191U (en) * | 2012-01-13 | 2012-10-03 | 无锡威孚精密机械制造有限责任公司 | Cavitation-proof port plate |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120502 |