CN112412723A - Floating composite axial plunger pump valve plate - Google Patents
Floating composite axial plunger pump valve plate Download PDFInfo
- Publication number
- CN112412723A CN112412723A CN202011293227.1A CN202011293227A CN112412723A CN 112412723 A CN112412723 A CN 112412723A CN 202011293227 A CN202011293227 A CN 202011293227A CN 112412723 A CN112412723 A CN 112412723A
- Authority
- CN
- China
- Prior art keywords
- valve plate
- plunger pump
- axial plunger
- window
- port plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007667 floating Methods 0.000 title claims abstract description 16
- 239000002131 composite material Substances 0.000 title abstract description 7
- 230000009467 reduction Effects 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 10
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000013016 damping Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/001—Noise damping
- F04B53/003—Noise damping by damping supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/102—Disc valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/18—Lubricating
Abstract
The invention relates to a floating composite axial plunger pump valve plate, which comprises an upper valve plate and a valve plate base, wherein an O-shaped sealing ring is arranged on the valve plate base at the joint of the upper valve plate and the valve plate base, a central through hole is arranged in the center of the upper valve plate and the valve plate base, an oil suction window is arranged on one side of the central through hole, a pressure oil window is arranged on the other side of the central through hole, a vibration reduction groove is arranged at the front end of the inlet of the oil suction window and the front end of the pressure oil window, a micro unit body texture area is arranged on the upper valve plate between the oil suction window and the pressure oil window, and the micro unit body texture area consists of a plurality of micro bosses. The invention has the advantages of small friction force, less unbalance loading abrasion, leakage reduction, high volume efficiency, convenient replacement, low cost, light weight and wide application range.
Description
Technical Field
The invention belongs to the field of hydraulic pumps, and particularly relates to a floating composite type axial plunger pump valve plate.
Background
The axial plunger pump is one of the most important hydraulic components and is widely applied to the fields of engineering machinery, metallurgical equipment, aerospace, transportation and the like. In the practical application of the axial plunger pump, the pressure distribution on the surface of the valve plate is uneven, and unbalance loading torque can be generated, so that the surface of the valve plate is subjected to eccentric wear, the volumetric efficiency is reduced, and the service life is shortened. With the rapid development of science and technology, the axial plunger pump develops towards the direction of high pressure, high speed and large flow, higher requirements are put forward on the performance of the axial plunger pump, and the improvement of the performance of the valve plate has great significance on the development of the axial plunger pump.
At present, the patent technology of a high-pressure large-displacement inclined shaft type axial plunger pump (CN 200720138344.4) and the patent technology of a port plate for a hydraulic motor (CN 201220553546.6) and the like do not mention the abrasion of the port plate due to unbalance loading and propose a technical scheme.
In summary, with the above technical data, the following problems exist in the prior art for processing the port plate: the cost is increased, the structure is complex, the application range is narrow, and the problems of unbalance loading abrasion and the like cannot be solved.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to overcome the defects in the prior art and provides the floating composite type axial plunger pump valve plate which has the advantages of small friction force, less unbalance loading abrasion, leakage reduction, high volume efficiency, convenience in replacement, low cost, light weight and wide application range.
The technical scheme is as follows: in order to solve the technical problem, the floating composite axial plunger pump valve plate comprises an upper valve plate and a valve plate base, wherein an O-shaped sealing ring is arranged on the valve plate base at the joint of the upper valve plate and the valve plate base, a central through hole is formed in the centers of the upper valve plate and the valve plate base, an oil suction window is formed in one side of the central through hole, an oil pressing window is formed in the other side of the central through hole, a vibration reduction groove is formed in the front end of the inlet of the oil suction window and the front end of the inlet of the oil pressing window, a micro unit body texture area is arranged on the upper valve plate between the oil suction window and the oil pressing window, and the micro unit body texture area is formed by a plurality of micro bosses.
Furthermore, the upper valve plate comprises a plate body and a positioning boss which are integrally formed, the positioning boss is arranged at the outer ring position of one side of the plate body, and a connecting groove is arranged on a valve plate base corresponding to the positioning boss.
Furthermore, the O-shaped sealing ring is arranged on the valve plate base on the inner side of the connecting groove.
Furthermore, three damping grooves are respectively arranged at the front ends of the inlets of the oil suction window and the oil pressing window, the length of the middle damping groove at each position is longer than that of the side damping grooves at the two sides of the middle damping groove, and the cross section of each damping groove is triangular.
Further, the upper valve plate is made of polytetrafluoroethylene.
Further, the valve plate base is made of No. 45 steel.
Furthermore, the upper surface of the miniature bosses is quadrilateral, and the sum of the areas of the upper surfaces of the miniature bosses is 50-80% of the planar area of the texture area of the miniature unit body.
Furthermore, the micro bosses are uniformly distributed in the micro unit body texture area.
Further, the free distance between the upper port plate and the port plate base is 10-20 um.
Furthermore, two micro unit body texture areas are arranged, and the cross section of each micro unit body texture area is in a fan shape.
In the invention, when the plunger pump absorbs and presses oil, the upper port plate can float under the action of the O-shaped sealing ring to adapt to pressure change and keep the upper port plate in contact with the plane of the pressure absorption oil side of the cylinder body; the outer diameters of the upper valve plate and the valve plate base are 80-110mm, the thickness of the upper valve plate is 5-6mm, and the thickness of the valve plate base is 6-10 mm; three vibration reduction grooves in each position are different in length, the middle vibration reduction groove is longest, the length is 5-7mm, the width is 0-2mm, the depth is 0-3mm, and the other two vibration reduction grooves are distributed on two sides, the length is 3-5mm, the width is 0-2mm, and the depth is 0-2 mm; the distance between the centers of two adjacent micro bosses is 5-50um, and the distance between the surface of the boss and the root is 5-40 um.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages:
1. by adopting the structure, when the plunger pump absorbs and presses oil, the valve plate can float under the action of the O-shaped sealing ring, so that the upper valve plate can adapt to pressure change, the oil film is kept to have a certain thickness, and the adverse effect of unbalance loading on the valve plate is overcome;
2. the vibration reduction grooves are arranged, and three vibration reduction grooves with different lengths and depths and triangular cross sections are added before entering the oil pressing port and the oil suction port, so that the flow can be gradually increased when entering the oil pressing window, and vibration reduction and noise reduction are facilitated;
3. the transition plane between the oil suction and pressure windows of the upper valve plate is provided with a micro boss surface texture which is quadrilateral, so that the lubricating performance is improved, and the friction is reduced;
4. the upper valve plate is made of polytetrafluoroethylene, the contact plane of the cylinder body and the upper valve plate does not need to be plated with a copper welding material, and the cylinder body is directly made of the material, so that the processing time is saved, and the cost is saved.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a side sectional view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is a cross-sectional view of the upper port plate of the present invention;
FIG. 5 is a cross-sectional view of the port plate base of the present invention;
fig. 6 is a schematic structural view of an O-ring according to the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the floating composite axial plunger pump port plate of the present invention comprises an upper port plate 1 and a port plate base 2, an O-ring 3 is disposed on the port plate base 2 at the joint of the upper port plate 1 and the port plate base 2, the upper port plate 1 is made of teflon, the port plate base 2 is made of 45-grade steel, the upper port plate 1 comprises a plate body 10 and a positioning boss 11 which are integrally formed, the positioning boss 11 is disposed at the outer ring position of one side of the plate body 10, a connecting groove 12 is disposed on the port plate base 2 corresponding to the positioning boss 11, the O-ring 3 is disposed on the port plate base 2 at the inner side of the connecting groove 12, the free distance between the upper port plate 1 and the port plate base 2 is 10-20um, a central through hole 4 is disposed at the centers of the upper port plate 1 and the port plate base 2, an oil absorption window 5 is arranged on one side of the central through hole 4, a pressure oil window 6 is arranged on the other side of the central through hole, three vibration reduction grooves 7 are respectively arranged at the front ends of inlets of the oil absorption window 5 and the pressure oil window 6, the length of a middle vibration reduction groove at each position is longer than that of side vibration reduction grooves at two sides of the middle vibration reduction groove, the cross section of each vibration reduction groove 7 is triangular, a micro unit body texture area 8 is arranged on an upper flow distribution plate 1 between the oil absorption window 5 and the pressure oil window 6, the two micro unit body texture areas 8 are arranged in total, the cross section of each micro unit body texture area 8 is fan-shaped, the micro unit body texture area 8 is formed by uniformly distributing a plurality of micro bosses 9, the upper surface shapes of the micro bosses 9 are quadrilateral, and the sum of the upper surface areas of the micro unit body texture areas is 50-80% of the plane area of. When the plunger pump absorbs and presses oil, the upper valve plate can float under the action of the O-shaped sealing ring, so that the pressure change is adapted, the oil film is kept to have a certain thickness, and the adverse effect of eccentric load on the valve plate is overcome; the vibration reduction grooves are arranged, and three vibration reduction grooves with different lengths and depths and triangular cross sections are added before entering the oil pressing port and the oil suction port, so that the flow can be gradually increased when entering the oil pressing window, and vibration reduction and noise reduction are facilitated; the transition plane between the oil suction and pressure windows of the upper valve plate is provided with a micro boss surface texture which is quadrilateral, so that the lubricating performance is improved, and the friction is reduced; the upper valve plate is made of polytetrafluoroethylene, the contact plane of the cylinder body and the upper valve plate does not need to be plated with a copper welding material, and the cylinder body is directly made of the material, so that the processing time and the cost are saved; the product has the advantages of small friction force, less unbalance loading abrasion, leakage reduction, high volume efficiency, convenient replacement, low cost, light weight and wide application range.
The present invention provides a thought and a method, and a method and a way for implementing the technical scheme are many, the above is only a preferred embodiment of the present invention, it should be noted that, for a person skilled in the art, a plurality of improvements and modifications can be made without departing from the principle of the present invention, and the improvements and modifications should be regarded as the protection scope of the present invention, and each component not explicitly described in the embodiment can be implemented by the prior art.
Claims (10)
1. The utility model provides a compound axial plunger pump valve plate floats which characterized in that: the structure comprises an upper valve plate (1) and a valve plate base (2), wherein an O-shaped sealing ring (3) is arranged on the valve plate base (2) at the joint of the upper valve plate (1) and the valve plate base (2), a central through hole (4) is formed in the center of the upper valve plate (1) and the valve plate base (2), an oil absorption window (5) is arranged on one side of the central through hole (4), an oil pressing window (6) is arranged on the other side of the central through hole, a vibration reduction groove (7) is arranged at the front ends of inlets of the oil absorption window (5) and the oil pressing window (6), a micro unit body texture area (8) is arranged on the upper valve plate (1) between the oil absorption window (5) and the oil pressing window (6), and the micro unit body texture area (8) is formed by a plurality of micro bosses (9).
2. The floating compound axial plunger pump port plate of claim 1, wherein: go up port plate (1) including disk body (10) and location boss (11), their integrated into one piece, location boss (11) are established in disk body (10) one side outer lane position be equipped with spread groove (12) on port plate base (2) that location boss (11) correspond.
3. The floating compound axial plunger pump port plate of claim 2, wherein: the O-shaped sealing ring (3) is arranged on the valve plate base (2) on the inner side of the connecting groove (12).
4. The floating compound axial plunger pump port plate of claim 1, wherein: the front ends of the inlets of the oil suction window (5) and the oil pressing window (6) are respectively provided with three vibration reduction grooves (7), the length of the middle vibration reduction groove at each position is longer than that of the side vibration reduction grooves at the two sides of the middle vibration reduction groove, and the cross section of each vibration reduction groove (7) is triangular.
5. The floating compound axial plunger pump port plate of claim 1, wherein: the upper valve plate (1) is made of polytetrafluoroethylene.
6. The floating compound axial plunger pump port plate of claim 1, wherein: the valve plate base (2) is made of No. 45 steel.
7. The floating compound axial plunger pump port plate of claim 1, wherein: the upper surface of the miniature bosses (9) is quadrilateral, and the sum of the areas of the upper surfaces of the miniature bosses is 50-80% of the planar area of the miniature unit body texture area (8).
8. The floating compound axial plunger pump port plate of claim 1, wherein: the micro bosses (9) are uniformly distributed in the micro unit body texture area (8).
9. The floating compound axial plunger pump port plate of claim 1, wherein: the free distance between the upper port plate (1) and the port plate base (2) is 10-20 um.
10. The floating compound axial plunger pump port plate of claim 1, wherein: two micro unit body texture areas (8) are arranged, and the cross section of each micro unit body texture area (8) is fan-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011293227.1A CN112412723A (en) | 2020-11-18 | 2020-11-18 | Floating composite axial plunger pump valve plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011293227.1A CN112412723A (en) | 2020-11-18 | 2020-11-18 | Floating composite axial plunger pump valve plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112412723A true CN112412723A (en) | 2021-02-26 |
Family
ID=74772996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011293227.1A Pending CN112412723A (en) | 2020-11-18 | 2020-11-18 | Floating composite axial plunger pump valve plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112412723A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU561803A1 (en) * | 1975-07-15 | 1977-06-15 | Уральский ордена Трудового Красного Знамени политехнический институт им. С.М.Кирова | Axial piston pump distributor |
| JP2005337107A (en) * | 2004-05-26 | 2005-12-08 | Hitachi Constr Mach Co Ltd | Swash-plate type liquid pressure rotating machine |
| CN201137555Y (en) * | 2007-12-21 | 2008-10-22 | 太原矿山机器润滑液压设备有限公司 | High pressure high displacement inclined shaft type axial plunger pump |
| CN202900526U (en) * | 2012-10-25 | 2013-04-24 | 龙工（上海）桥箱有限公司 | Thrust plate for hydraulic motors |
| CN104595177A (en) * | 2015-01-27 | 2015-05-06 | 武汉科技大学 | Plunger pump valve plate with local micro unit structures |
| CN204419552U (en) * | 2015-01-27 | 2015-06-24 | 武汉科技大学 | A kind of Combined plunger piston pump port plate |
| CN110925160A (en) * | 2019-12-12 | 2020-03-27 | 太原理工大学 | Valve plate capable of reducing multi-change working condition and pressure impact noise |
| CN213711250U (en) * | 2020-11-18 | 2021-07-16 | 武科宜创(无锡)流体装备有限公司 | Low-friction composite plunger pump valve plate |
-
2020
- 2020-11-18 CN CN202011293227.1A patent/CN112412723A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU561803A1 (en) * | 1975-07-15 | 1977-06-15 | Уральский ордена Трудового Красного Знамени политехнический институт им. С.М.Кирова | Axial piston pump distributor |
| JP2005337107A (en) * | 2004-05-26 | 2005-12-08 | Hitachi Constr Mach Co Ltd | Swash-plate type liquid pressure rotating machine |
| CN201137555Y (en) * | 2007-12-21 | 2008-10-22 | 太原矿山机器润滑液压设备有限公司 | High pressure high displacement inclined shaft type axial plunger pump |
| CN202900526U (en) * | 2012-10-25 | 2013-04-24 | 龙工（上海）桥箱有限公司 | Thrust plate for hydraulic motors |
| CN104595177A (en) * | 2015-01-27 | 2015-05-06 | 武汉科技大学 | Plunger pump valve plate with local micro unit structures |
| CN204419552U (en) * | 2015-01-27 | 2015-06-24 | 武汉科技大学 | A kind of Combined plunger piston pump port plate |
| CN110925160A (en) * | 2019-12-12 | 2020-03-27 | 太原理工大学 | Valve plate capable of reducing multi-change working condition and pressure impact noise |
| CN213711250U (en) * | 2020-11-18 | 2021-07-16 | 武科宜创(无锡)流体装备有限公司 | Low-friction composite plunger pump valve plate |
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