CN102297119B - Piston pump - Google Patents
Piston pump Download PDFInfo
- Publication number
- CN102297119B CN102297119B CN201110175540.XA CN201110175540A CN102297119B CN 102297119 B CN102297119 B CN 102297119B CN 201110175540 A CN201110175540 A CN 201110175540A CN 102297119 B CN102297119 B CN 102297119B
- Authority
- CN
- China
- Prior art keywords
- pump
- bellows
- reciprocating pump
- piston
- pumping holes
- 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.)
- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000005086 pumping Methods 0.000 claims description 29
- 210000000635 valve cell Anatomy 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 4
- 230000002349 favourable effect Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- 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
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
-
- 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
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0408—Pistons
-
- 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0054—Special features particularities of the flexible members
-
- 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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/02—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having bellows
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention refers to a piston pump (10a,10b), in particular for a fluid assembly group in a vehicle, having a pump piston (12a,12b) which is disposed in an axially displaceable manner in a pump bore (16a,16b) disposed in a pump housing (14a,14b), a piston ring unit (18a,18b) and a valve unit (20a,20b), wherein the pump piston takes the form of bellows.
Description
Technical field
The present invention relates to a kind of according to independent claims 1 reciprocating pump as described in the preamble.
Background technique
From the various different mode of execution of reciprocating pump known in the state of the art.In the car, reciprocating pump is usually used to carry fluid in hydraulic system.These so-called pump elements generally include pump piston, the pumping holes formed in pump case and suction valve and expulsion valve and multiple seal element, and wherein, pump piston is made by cutting or formed machining usually, and pump case is usually implemented as cylinder body.These valves are used for controlling fluid in the pumping motion of pump piston.Here, suction valve is used for during compression stage, do not allow fluid be back in suction chamber.The anti-fluid of expulsion valve is from being on the pressure side back to the inner chamber of reciprocating pump.
Such as from the known a kind of such reciprocating pump of DE 10 229 201A1.This reciprocating pump comprises pump case, and this pump case has the pumping holes formed wherein.Pump piston can axially movably be arranged in this pumping holes, and this pump piston defines the pressing chamber of a variable volume.In order to lead to pump piston and seal, reciprocating pump has a piston ring unit.Reciprocating pump can be driven by eccentric wheel and do linear reciprocating motion.Controlled by a valve cell by the pressure medium flow of reciprocating pump, this valve cell comprises a suction valve and an expulsion valve.
Summary of the invention
In contrast to this, the reciprocating pump according to the present invention with feature described in independent claims 1 has the following advantages: pump piston is implemented as bellows.The task of conventional RESET spring also born by this bellows, and therefore this pump piston can advantageously be forced on eccentric wheel in the mode that structure is simple and with low cost at the duration of work of reciprocating pump.Therefore, pump function and reset function combine in parts by pump piston.Obtain the less and reciprocating pump that construction cost is cheap especially of a kind of structure space demand thus, because additional Returnning spring unit can be saved.Especially, pump in accordance with the present invention piston ensure that the buffering to pressure pulsation, thus obtains good NVH characteristic (Noise (noise), Vibration (vibration), Harshness (sound vibration roughness) characteristic).
Favourable improvement can be carried out to the reciprocating pump described in independent claims 1 by the measure mentioned in the dependent claims and improvement project.
In a kind of favourable mode of execution of reciprocating pump of the present invention, bellows is arranged in pumping holes with Pre strained state, thus pump piston reset to that to be pressed in other words on eccentric wheel be that pretightening force by bellows is automatically carried out.
Particularly advantageously, bellows is implemented as and is being reinforced towards the end of driver element.By this way, bellows can not be damaged because eccentric wheel loads and thus can without abrasively resisting eccentric load.
In the mode of execution that the another kind of reciprocating pump of the present invention is favourable, piston ring unit has at least one ring, and described ring is clamped or is injection-moulded in bellows.Therefore, reciprocating pump can carry out assembling and manufacturing especially simply, because described ring or can provide in the manufacture process of bellows simply by being clamped and installed on bellows or.
In the mode of execution that the another kind of reciprocating pump of the present invention is favourable, pumping holes and described ring are made up of the material that these two parts can be made to form sliding pair.Thus, advantageously guarantee the reliable guiding of pump piston in pumping holes and avoid the described ring being implemented as guide ring to be worn and/or to damage.In addition, between bellows and pumping holes, be provided with gap, advantageously can realize bellows simply thus and can not damage bellows in overvoltage lower support in pumping holes.
In the mode of execution that the another kind of reciprocating pump of the present invention is favourable, bellows comprises a stroke limiting unit.The trip limiting unit only allows bellows through the mobile route of a predetermined stroke and therefore forms the backstop of bellows, advantageously makes bellows safety prevent bellows from damaging in other words thus.Stroke limiting unit such as forms with the cap unit outwards closing pumping holes of valve cell.Therefore, advantageously simplify the manufacture of reciprocating pump, because two parts can be produced in a manufacturing process so simultaneously.Especially, the connection measure that these two parts need in other cases can be saved.
In the mode of execution that the another kind of reciprocating pump of the present invention is favourable, bellows is fixed in pump case hermetically on the end near valve cell, thus does not need the parts added to be used for fixing.
In the mode of execution that the another kind of reciprocating pump of the present invention is favourable, valve cell such as comprises at least two valves, and these valves arrange around bellows and/or are arranged in an axial plane of bellows in same radial plane.Therefore, the layout of these valves can advantageously optimally adapt with the existing structure space of reciprocating pump.
Accompanying drawing explanation
Favourable mode of execution of the present invention shown in the drawings, is described below.In the accompanying drawings, identical reference character represents the component or element that perform same or similar function.
Fig. 1 shows the schematic sectional view of the first embodiment of reciprocating pump of the present invention;
Fig. 2 shows the schematic sectional view of the second embodiment of reciprocating pump of the present invention.
Embodiment
Fig. 1 and 2 respectively illustrates reciprocating pump 10a, 10b of the present invention partial view in the region of pump piston 12a, 12b.Shown reciprocating pump 10a, 10b fluid assembly especially in automobile designs.Reciprocating pump 10a, 10b can be applied in the pumping system of Hyundai Motor technology, these pumping systems such as relate to various safety technique, such as ABS (anti-lock braking system), ESP (Electronic Stability Program (ESP) system), EHB (EHB), TCS (traction control system) or ASR (Driving Antiskid Control System).
Reciprocating pump 10a, 10b have pump piston 12a, 12b, and this pump piston axially movably can be arranged on pumping holes 16a, the 16b that is arranged in pump case 14a, 14b.The driving of pump piston 12a, 12b is undertaken by driver element 22a and 22b, and this driver element such as comprises the eccentric wheel of rotatable driving, and wherein, eccentric wheel 22a, 22b are relative to spin axis 36a, 36b eccentric setting.Spin axis 36a, 36b of eccentric wheel 22a, 22b radially with the axes intersect of pumping holes 16a, 16b.Eccentric wheel 22a, 22b move on a circular track around spin axis 36a and 36b, and wherein, the radius of circular track is consistent with the throw of eccentric of eccentric wheel 22a, 22b.Pump piston 12a, 12b to abut against on the periphery of eccentric wheel 22a, 22b with end face 24a, a 24b and can move through a stroke H vertically in pumping holes 16a, 16b.
Pump piston 12a, 12b are sealed by piston ring unit 18a, a 18b and can be axially movably directed in pumping holes 16a, 16b.In the embodiment shown, piston ring unit 18a, 18b comprise guide ring slip ring 18.1a, 18.1b in other words, but piston ring unit 18a, 18b also can have other ring, such as other guide ring, seal ring and/or supporting ring.In the embodiment shown, described ring 18.1a, 18.1b are arranged in the region of eccentric wheel side of pump piston 12a, 12b, but described ring also can occupy other positions.
Reciprocating pump 10a, 10b also comprise valve cell 20a, a 20b, and this valve cell comprises suction valve 20.1a, a 20.1b and expulsion valve 20.2a, a 20.2b, and other valve also can be expected.Be provided with pressing chamber 38a, 38b at suction valve 20.1a, 20.1b with between expulsion valve 20.2a, 20.2b, this pressing chamber becomes greatly in the suction stroke of pump piston 12a, 12b, and reduces in the compression stroke of pump piston 12a, 12b.These valves 20.1a, 20.1b, 20.2a, 20.2b are used for controlling fluid in the pumping motion of pump piston 12a, 12b.Here, suction valve 20.1a, 20.1b is used for during compression stage, do not allow fluid be back in the suction chamber of reciprocating pump 10a, 10b.The anti-fluid of expulsion valve 20.2a, 20.2b is back to reciprocating pump inner chamber from pressing chamber 38a, 38b.Usually, such valve is designed to spring-loaded ball valve.
In order to enable pump piston 12a, 12b be pressed on eccentric wheel 22a, 22b in the mode that the duration of work of reciprocating pump is simple and with low cost with structure, pump piston 12a, 12b are implemented as bellows according to the present invention.Here, bellows 12a, 12b advantageously instead of the Returnning spring unit be usually provided with in conventional piston pump, and the spring force of this Returnning spring unit applies necessary impacting force.Bellows 12a, 12b are here arranged in pumping holes 16a, 16b with Pre strained state, thus pump piston 12a, 12b reset are pressed in other words on eccentric wheel 22a, 22b by the pretightening force of bellows.In the embodiment shown, bellows 12a, 12b are implemented as and are being reinforced towards end face 24a, 24b place of driver element eccentric wheel 22a, 22b in other words, and wherein, this such as can be realized by the additional layer be made up of fibre reinforced materials.
As mentioned, piston ring unit 18a, 18b at least have in the embodiment shown in pumping holes 16a, 16b to ring 18.1a, 18.1b that pump piston 12a, 12b lead, this ring be preferably clamped or be injection-moulded in bellows 12a, 12b.Advantageously, pumping holes 16a, 16b and described ring 18.1a, 18.1b are made up of the material that these two parts 16a, 16b, 18.1a, 18.1b can be made to form sliding pair.Here, such as pumping holes 16a, 16b are made of aluminum, and bellows 12a, 12b are made up of Teflon.In order to enable bellows 12a, 12b can not damage bellows 12a, 12b in overvoltage lower support on pumping holes 16a, 16b, be provided with very little gap at bellows 12a, 12b with between pumping holes 16a, 16b.
In order to make bellows 12a, 12b safety and damage protective gear as preventing, bellows 12a, 12b comprise stroke limiting unit 26a and 26b.In the embodiment shown, stroke limiting unit 26a, 26b are arranged on bellows 12a, 12b inside and are preferably implemented as tube-like element, and this tube-like element only allows bellows 12a, 12b through the mobile route of stroke H and therefore forms the backstop of bellows 12a, 12b.Stroke limiting unit 26a, 26b are preferably integrally formed with the outwards closed pumping holes 16a of valve cell 20a, 20b, cap unit 28a, 28b of 16b.Bellows 12a, 12b are fixed on pump case 14a, 14b hermetically on end 30a, the 30b near valve cell 20a, 20b, wherein, such as, can realize fixing by sealing packing.
Valve cell 20a, 20b comprise at least two valves 20.1a, 20.1b, 20.2a and 20.2b, and wherein, this refers to suction valve 20.1a, 20.1b and expulsion valve 20.2a, 20.2b in the embodiment shown.These valves 20.1a, 20.1b, 20.2a, 20.2b can arrange around bellows 12a, 12b and/or be arranged in an axial plane 34a of bellows 12a, 12b in same radial plane 32a, 32b.At reciprocating pump 10a according in first embodiment of Fig. 1, suction valve 20.1a is arranged in the 32a of radial plane, and expulsion valve 20.2a is arranged in the axial plane 34a of bellows 12a.At reciprocating pump 10b according in second embodiment of Fig. 2, suction valve 20.1b and expulsion valve 20.2b is arranged around bellows 12b in same radial plane 32b.
Claims (9)
1. the reciprocating pump for fluid assembly in the car, described reciprocating pump comprises a pump piston (12a, 12b), a piston ring unit (18a, 18b) He one valve cell (20a, 20b), described pump piston axially movably can be arranged on one and be arranged on pump case (14a, pumping holes (16a 14b), 16b), it is characterized in that, described pump piston (12a, 12b) be bellows, and described bellows (12a, 12b) have towards driver element (22a, end face 22b), wherein said pump piston (12a, 12b) pump function and reset function are combined in parts, and wherein said bellows (12a, 12b) be arranged on described pumping holes (16a with Pre strained state, 16b).
2. reciprocating pump as claimed in claim 1, it is characterized in that, described bellows (12a, 12b) is being reinforced towards end face (24a, the 24b) place of driver element (22a, 22b).
3. reciprocating pump as claimed in claim 1 or 2, is characterized in that, described piston ring unit (18a, 18b) there is at least one ring (18.1a, 18.1b), described ring is clamped or is injection-moulded in described bellows (12a, 12b).
4. reciprocating pump as claimed in claim 3, is characterized in that, described pumping holes (16a, 16b) and described ring (18.1a, 18.1b) by making this two parts (16a, 16b, 18.1a, 18.1b) material that forms sliding pair makes.
5. reciprocating pump as claimed in claim 1 or 2, is characterized in that, between described bellows (12a, 12b) and described pumping holes (16a, 16b), be provided with gap.
6. reciprocating pump as claimed in claim 1 or 2, it is characterized in that, described bellows (12a, 12b) comprises a stroke limiting unit (26a, 26b).
7. reciprocating pump as claimed in claim 6, is characterized in that, described stroke limiting unit (26a, 26b) with described valve cell (20a, being integrally formed to the cap unit (28a, 28b) of pumping holes (16a, 16b) described in outer closure 20b).
8. reciprocating pump as claimed in claim 1 or 2, is characterized in that, described bellows (12a, 12b) at close described valve cell (20a, end (30a, 30b) 20b) is fixed on described pump case (14a, 14b) hermetically.
9. reciprocating pump as claimed in claim 1 or 2, it is characterized in that, described valve cell (20a, 20b) comprises at least two valve (20.1a, 20.1b, 20.2a, 20.2b), described valve is at same radial plane (32a, around described bellows (12a 32b), 12b) arrange and/or be arranged in an axial plane (34a, 34b) of described bellows (12a, 12b).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010030342A DE102010030342A1 (en) | 2010-06-22 | 2010-06-22 | piston pump |
| DE102010030342.9 | 2010-06-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102297119A CN102297119A (en) | 2011-12-28 |
| CN102297119B true CN102297119B (en) | 2015-07-08 |
Family
ID=44454428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110175540.XA Expired - Fee Related CN102297119B (en) | 2010-06-22 | 2011-06-20 | Piston pump |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN102297119B (en) |
| DE (1) | DE102010030342A1 (en) |
| FR (1) | FR2961561A1 (en) |
| GB (1) | GB2481524A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011089967A1 (en) * | 2011-12-27 | 2013-06-27 | Robert Bosch Gmbh | High-pressure fuel pump for a fuel injection system |
| DE102012102700A1 (en) * | 2012-03-29 | 2013-10-02 | Elringklinger Ag | sealing arrangement |
| CN111927763B (en) * | 2020-09-25 | 2020-12-11 | 东营辰瑛石油技术服务有限公司 | Plunger pump applied to oilfield flooding |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2091970U (en) * | 1991-01-21 | 1992-01-01 | 曹吉祥 | Corrugated pipe pump with convex ring |
| CN2198404Y (en) * | 1994-03-11 | 1995-05-24 | 洪菱成 | Anti-corrosion high pressure injecting pump |
| US5772413A (en) * | 1996-03-21 | 1998-06-30 | Nissan Motor Co., Ltd. | Bellows type pump |
| CN2340934Y (en) * | 1998-05-08 | 1999-09-29 | 朱震宇 | Structure of magnetic impulsive piston pump |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE555331A (en) * | 1956-03-02 | 1900-01-01 | ||
| IT1217258B (en) * | 1987-08-25 | 1990-03-22 | Weber Srl | RADIAL PUMP WITH ADJUSTABLE FLOW RATE |
| DE3820042A1 (en) * | 1988-06-13 | 1989-12-21 | Hofmann Walter Gmbh | Positive displacement pump |
| JP2000045906A (en) * | 1998-07-29 | 2000-02-15 | Mitsubishi Electric Corp | High-pressure fuel pump system |
| DE10035625A1 (en) * | 2000-07-21 | 2002-02-28 | Siemens Ag | Pump with a bellows as a seal |
| DE50207312D1 (en) | 2001-06-30 | 2006-08-03 | Bosch Gmbh Robert | PISTON PUMP |
| JP2006152976A (en) * | 2004-12-01 | 2006-06-15 | Nikki Co Ltd | High pressure fuel pump |
| FR2904665B1 (en) * | 2006-08-04 | 2008-10-31 | Siemens Automotive Hydraulics | TRANSFER PUMP FOR HIGH PRESSURE FUEL INJECTION |
-
2010
- 2010-06-22 DE DE102010030342A patent/DE102010030342A1/en active Pending
-
2011
- 2011-06-17 FR FR1155306A patent/FR2961561A1/en not_active Withdrawn
- 2011-06-20 CN CN201110175540.XA patent/CN102297119B/en not_active Expired - Fee Related
- 2011-06-21 GB GB1110518.6A patent/GB2481524A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2091970U (en) * | 1991-01-21 | 1992-01-01 | 曹吉祥 | Corrugated pipe pump with convex ring |
| CN2198404Y (en) * | 1994-03-11 | 1995-05-24 | 洪菱成 | Anti-corrosion high pressure injecting pump |
| US5772413A (en) * | 1996-03-21 | 1998-06-30 | Nissan Motor Co., Ltd. | Bellows type pump |
| CN2340934Y (en) * | 1998-05-08 | 1999-09-29 | 朱震宇 | Structure of magnetic impulsive piston pump |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201110518D0 (en) | 2011-08-03 |
| GB2481524A (en) | 2011-12-28 |
| FR2961561A1 (en) | 2011-12-23 |
| CN102297119A (en) | 2011-12-28 |
| DE102010030342A1 (en) | 2011-12-22 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20210620 |
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| CF01 | Termination of patent right due to non-payment of annual fee |