EP0688952B1 - Hochdruckreinigungsgerät - Google Patents
Hochdruckreinigungsgerät Download PDFInfo
- Publication number
- EP0688952B1 EP0688952B1 EP95104290A EP95104290A EP0688952B1 EP 0688952 B1 EP0688952 B1 EP 0688952B1 EP 95104290 A EP95104290 A EP 95104290A EP 95104290 A EP95104290 A EP 95104290A EP 0688952 B1 EP0688952 B1 EP 0688952B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- piston
- pressure cleaning
- cleaning apparatus
- accordance
- 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 - Lifetime
Links
- 238000004140 cleaning Methods 0.000 title claims description 17
- 239000004033 plastic Substances 0.000 claims abstract description 38
- 229920003023 plastic Polymers 0.000 claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 5
- 230000007423 decrease Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000003534 oscillatory effect Effects 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000004954 Polyphthalamide Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229920006375 polyphtalamide Polymers 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920008285 Poly(ether ketone) PEK Polymers 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 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
- F04B1/124—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/12—Coating
Definitions
- the invention relates to a high-pressure cleaning device a swashplate drive for at least one oscillating displaceable piston of a high pressure pump, the with a head part resiliently pressed against a swash plate is sealed with a cylindrical working part immersed in a pump chamber of the high pressure pump.
- Pistons made of steel, for example made of high-alloy Cr steels. These pistons are relatively tall Weight, and therefore result in high-speed pumps very high acceleration forces.
- pistons of this type in whole or in part Made from ceramic to reduce weight to reach. To a certain extent, these pistons successfully replace steel pistons, but result in Partly constructive difficulties in that ceramics little can be claimed on train.
- the piston will partially continue made of metal, but only in the core area, the outer areas are replaced by plastic, by the metallic core of the piston with plastic is encased.
- the core is circular cylindrical is trained and is essentially about extends the entire length of the working part. So it will a conventional steel piston in the area of its working part provided with a much smaller scope, and the reduced area is covered by a plastic coating replaced. It is advantageous if the thickness of the Plastic sheath is between 0.5 and 10 mm, preferred between 1 and 5 mm.
- the plastic jacket additionally covers the end face of the core.
- the core is, so to speak, immersed in a plastic pot or Plastic sleeve and is all-round in the working part surrounded by the plastic jacket.
- a receiving opening in the end face of the core is arranged for a holding element, for example a blind hole.
- a holding element immerse, for example a holding pin
- the Metal core of the piston stops when the plastic jacket is on this is attached.
- the remaining opening in the plastic jacket can after coating the core and the Removal of the piston from the holding element with plastic be closed in one piece so that a complete Coverage also takes place in the area of the end face of the core.
- the head part of the piston is made of metal and with the Core is connected by cold forming.
- the headboard serves as part of the swashplate.
- the outer diameter of the Head part the outer diameter of the plastic jacket is the same, so that there is a total piston with continuous same outer diameter.
- a support collar on the plastic jacket molded for a pressure spring surrounding the working part is.
- This support collar is advantageously on the Molded headboard adjacent edge of the plastic jacket.
- the support collar is radial has outwardly decreasing material thickness, in particular the support collar can be triangular in cross section be.
- a particularly good adhesion of the plastic jacket the core is obtained when the plastic jacket on the Core is sprayed on.
- An electric motor 2 is arranged in a housing 1 whose motor shaft 3 is held a swash plate 4. This plunges into the housing 5 of a high-pressure pump 6, which directly connects to the electric motor 2.
- a high-pressure pump 6 which directly connects to the electric motor 2.
- a plurality of pumping chambers 7 are arranged, only one of which is shown in FIG. 1.
- Each Pump chamber 7 is connected to an inlet valve 8 Inlet line 9 and an outlet valve 10 with a Outlet line 11 in communication into each pump chamber 7 immersed sealed a cylindrical piston 12 which in a guide 13 is mounted for longitudinal displacement.
- This Piston 12 lies with a head part 14 on the swash plate 4 and is resiliently opposed by a coil spring 15 the swashplate pressed on the one hand on the High pressure pump 6 and on the other hand on a support collar 16 is supported on the piston 12 and which receives the piston 12 Guide 13 surrounds.
- a piston 12 is shown in longitudinal section in FIG.
- This piston 12 is constructed in two parts, namely it comprises a core 17 with a cylindrical working part 18th and the head part 14 and the cylindrical working part 18 all-round plastic sheath 19, the extends to the extended head part 14.
- the outside diameter of the head part 14 corresponds to the outer diameter of the plastic jacket 19, the layer thickness of the plastic jacket 19 is approximately 0.5 to 10 mm, preferably 1 up to 5 mm.
- the ratio of the diameter of the Core and the diameter of the entire piston in the The order of 8:15 to 13:15, especially in the Magnitude 10:15 to 11:15.
- Plastic jacket 19 is the support collar 16 in one piece molded on the plastic jacket 19, it is like that Plastic jacket 19 made of plastic and has the cross section a right triangle, that is Material thickness decreases radially outwards.
- the plastic jacket 19 is preferably made by injection molding of the working part 18 applied to this, and points to it the working part 18 has a blind hole on its end face 20 21 into which a pin-shaped holding element 22 can immerse. To coat the core 17, this is plugged onto the holding element 22 and then with Injection molded plastic after removal from the holding element 22 the remaining opening in the area of the blind hole 21 are also filled with plastic so that the plastic jacket 19 also in the area of the end face 20 covers them continuously.
- the encapsulation of the core is usually done by a sprue with single or multiple gate, ring gate or screen cut.
- thermoplastic materials be used for example higher polyester or benzene derivatives, for example polyphthalamide (PPA), polyphenylene sulfide (PPS), polyether ether ketone (PEEK), polyether ketone (PEK) or polyimide (PI).
- PPA polyphthalamide
- PPS polyphenylene sulfide
- PEEK polyether ether ketone
- PEK polyether ketone
- PI polyimide
- thermosetting plastics for example, phenol, formaldehyde resins, Melamine formaldehyde resins, unsaturated polyester resins or epoxy resins.
- mineral fillers for example in an amount of 50% by weight.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
- Cleaning By Liquid Or Steam (AREA)
Description
- Figur 1 :
- eine schematische Längsschnittansicht eines Hochdruckreinigungsgerätes mit einer Taumelscheiben-Kolbenpumpe und
- Figur 2 :
- eine Längsschnittansicht eines kunststoffummantelten Kolbens der Taumelscheibenpumpe der Figur 1.
Claims (11)
- Hochdruckreinigungsgerät mit einem Taumelscheibenantrieb für mindestens einen oszillierend verschiebbaren Kolben einer Hochdruckpumpe, der mit einem Kopfteil federnd an eine Taumelscheibe angedrückt wird und mit einem zylindrischen Arbeitsteil abgedichtet in eine Pumpkammer der Hochdruckpumpe eintaucht,
dadurch gekennzeichnet, daß der Kolben (12) einen mit dem Kopfteil (14) verbundenen Kern (17) aus Metall aufweist und daß nur der Kern (17) von einem Kunststoffmantel (19) umgeben ist und mit diesem zusammen das Arbeitsteil (18) des Kolbens (12) bildet. - Hochdruckreinigungsgerät nach Anspruch 1, dadurch gekennzeichnet, daß der Kern (17) kreiszylindrisch ausgebildet ist und sich im wesentlichen über die gesamte Länge des Arbeitsteils (18) erstreckt.
- Hochdruckreinigungsgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Dicke des Kunststoffmantels (19) zwischen 0,5 bis 10 mm liegt, insbesondere 1 bis 5 mm.
- Hochdruckreinigungsgerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Kunststoffmantel (19) zusätzlich die Stirnseite (20) des Kerns (17) abdeckt.
- Hochdruckreinigungsgerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß in der Stirnseite (20) des Kerns (17) eine Aufnahmeöffnung (21) für ein Halteelement (22) angeordnet ist.
- Hochdruckreinigungsgerät nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Kopfteil (14) des Kolbens (12) aus Metall besteht und mit dem Kern (17) durch Kaltanformung verbunden ist.
- Hochdruckreinigungsgerät nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Außendurchmesser des Kopfteils (14) dem Außendurchmesser des Kunststoffmantels (19) gleich ist.
- Hochdruckreinigungsgerät nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß an den Kunststoffmantel (19) ein Stützkragen (16) für eine das Arbeitsteil (18) umgebende Andruckfeder (15) angeformt ist.
- Hochdruckreinigungsgerät nach Anspruch 8, dadurch gekennzeichnet, daß der Stützkragen (16) an dem am Kopfteil (14) anliegenden Rand des Kunststoffmantels (19) angeformt ist.
- Hochdruckreinigungsgerät nach Anspruch 8 oder 9, dadurch gekennzeichnet, daß der Stützkragen (16) eine radial nach außen abnehmende Materialstärke aufweist.
- Hochdruckreinigungsgerät nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß der Kunststoffmantel (19) auf den Kern (17) aufgespritzt ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4421417 | 1994-06-18 | ||
| DE4421417 | 1994-06-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0688952A1 EP0688952A1 (de) | 1995-12-27 |
| EP0688952B1 true EP0688952B1 (de) | 1998-09-16 |
Family
ID=6520963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95104290A Expired - Lifetime EP0688952B1 (de) | 1994-06-18 | 1995-03-23 | Hochdruckreinigungsgerät |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0688952B1 (de) |
| AT (1) | ATE171246T1 (de) |
| DE (1) | DE59503583D1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2031246A3 (de) * | 2007-08-24 | 2011-10-05 | BWI Company Limited S.A. | Hülsenlose Kolbenpumpe mit einem Kunststoffkolben |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19605369A1 (de) * | 1996-02-14 | 1997-08-21 | Schaeffler Waelzlager Kg | Kolbenmaschine mit Kunststoffkolben |
| DE19708143A1 (de) * | 1997-02-28 | 1998-09-03 | Itt Mfg Enterprises Inc | Pumpenkolben mit Verstärkungseinsatz und/oder Kunststoffventilkörper |
| DE19725953A1 (de) * | 1997-06-19 | 1998-12-24 | Schaeffler Waelzlager Ohg | Hochdruckreinigungsgerät |
| DE19809592B4 (de) * | 1998-03-06 | 2007-09-13 | Robert Bosch Gmbh | Kolbenpumpe |
| DE102010032058A1 (de) * | 2010-07-23 | 2012-01-26 | Robert Bosch Gmbh | Kolbeneinheit |
| DE102011010278A1 (de) * | 2011-02-04 | 2012-08-09 | Robert Bosch Gmbh | Kolbenanordnung einer hydraulischen Kolbenmaschine und Verfahren zu ihrer Herstellung |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7105899U (de) * | 1971-02-17 | 1971-07-01 | Teldix Gmbh | Hochdruck-kolbenpumpe |
| JPS55161981A (en) * | 1979-06-01 | 1980-12-16 | Diesel Kiki Co Ltd | Compressor with rotary swash plate |
| JPS5786580A (en) * | 1980-11-19 | 1982-05-29 | Toyoda Autom Loom Works Ltd | Piston for swash plate type compressor |
| US4679994A (en) * | 1981-03-09 | 1987-07-14 | Allied Corporation | Piston vacuum pump |
| EP0108746B1 (de) * | 1982-04-05 | 1986-12-10 | Caterpillar Inc. | Vollkolben mit einer zentralen schmierölleitung |
| JP2692044B2 (ja) * | 1988-11-02 | 1997-12-17 | 工業技術院長 | 水用ピストンポンプ |
-
1995
- 1995-03-23 EP EP95104290A patent/EP0688952B1/de not_active Expired - Lifetime
- 1995-03-23 DE DE59503583T patent/DE59503583D1/de not_active Expired - Fee Related
- 1995-03-23 AT AT95104290T patent/ATE171246T1/de not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2031246A3 (de) * | 2007-08-24 | 2011-10-05 | BWI Company Limited S.A. | Hülsenlose Kolbenpumpe mit einem Kunststoffkolben |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE171246T1 (de) | 1998-10-15 |
| DE59503583D1 (de) | 1998-10-22 |
| EP0688952A1 (de) | 1995-12-27 |
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