EP1030059A1 - Moteur pneumatique pour une pompe de graissage - Google Patents

Moteur pneumatique pour une pompe de graissage Download PDF

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Publication number
EP1030059A1
EP1030059A1 EP99103235A EP99103235A EP1030059A1 EP 1030059 A1 EP1030059 A1 EP 1030059A1 EP 99103235 A EP99103235 A EP 99103235A EP 99103235 A EP99103235 A EP 99103235A EP 1030059 A1 EP1030059 A1 EP 1030059A1
Authority
EP
European Patent Office
Prior art keywords
control housing
piece
chamber
air motor
control
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.)
Withdrawn
Application number
EP99103235A
Other languages
German (de)
English (en)
Inventor
Hubert Käufl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pressol Schmiergeraete GmbH
Original Assignee
Pressol Schmiergeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pressol Schmiergeraete GmbH filed Critical Pressol Schmiergeraete GmbH
Priority to DE29902944U priority Critical patent/DE29902944U1/de
Priority to EP99103235A priority patent/EP1030059A1/fr
Publication of EP1030059A1 publication Critical patent/EP1030059A1/fr
Withdrawn legal-status Critical Current

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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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • F04B9/123—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber
    • F04B9/125—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor

Definitions

  • the invention relates to a compressed air motor for a lubricant pump, in which an overall housing is a cylinder piece, a control housing and forms a flange area, in which a in the cylinder piece reciprocating piston one through the Control housing and piston rod projecting the connecting flange area carries and the piston the cylinder piece in a control side Space and a wall-side room divided, in which the Control housing with a distributor device arranged radially to the piston rod is provided, the one on the outside of the control housing sedentary approach forms from the approach of the manifold a line along the control housing and the cylinder piece leads to the wall-side room, where one with one Compressed air connection provided in the control housing Pressure chamber by means of the distributor device either via the Line with the wall-side room and through a passage is connected to the control-side space of the cylinder piece, at which the distributor device has a first opening in the pressure chamber, faces a central opening and a second opening, one of which the middle opening through a channel with which the control housing surrounding outside
  • An object of the invention is therefore to provide an air motor to create the type mentioned above, in which not only cutting Machining of the entire housing is avoided, but also cutting Processing of the simple construction, distributor device provided radially to the piston rod on the control housing is avoided.
  • the air motor according to the invention is solving this problem, characterized in that the overall housing is made of cast metal and the line in the control housing and the cylinder piece is molded in one piece so that the Approach of one with the control housing made of cast metal shaped nozzle and a detachably attached to the nozzle Lid made of cast metal is that the distribution device a with the control housing molded in one piece from metal Has spigot comprising chamber wall which surrounds a chamber, and that in the chamber is provided with sealing rings, plastic injection molded manifold is used, which the channels to the outside, to the control room and to the wall-side space.
  • the control housing is one Cast part without machining.
  • the manufacture of the invention Air motor is less expensive and less expensive.
  • the distributor piece is avoiding machining injection molded.
  • the sealing rings seal the air transitions from the distributor to the chamber wall against each other.
  • the distributor is made with the channels by injection molding.
  • the areas of the manifold are - with one exception - the way they are arise during injection molding.
  • the control housing experiences essentially no machining post-processing. It has no post-processed Fitting and sealing surfaces. Are essential for the reduced Effort generated by metal casting, including the nozzle Chamber wall and the distributor piece produced by plastic injection molding.
  • the distributor is from the lid in the chamber held.
  • the channel to the outside to the end of the cover assigned Distribution piece runs and a sound insulation element for exhaust air in the lid is arranged.
  • the exhaust air is guided cheaply and the cover has the additional function of holding the sound insulation element.
  • the cover is a cage of the sound insulation element.
  • connection flange area a separate flange piece from the control housing and the cylinder piece, the timing case and that Connection flange piece held together by clamping screws are one end of the cylinder piece and the other end of the connecting flange piece attack as well as by molded on the control housing Cavities are performed. This simplifies the generation of the Control housing further. For holding the control housing in the overall housing tapping on the control housing is not necessary.
  • the Channel to the control room and the channel to the wall side Space in the manifold each include an axially closed all around Channel area and a radial channel area which in a circular segment recess of the distributor piece is arranged.
  • the circular segment recesses form the openings to the breakthrough and the management of the control housing and it is - seen in the axial direction of the distributor piece - each one of the sealing rings is arranged on each side of each recess.
  • Control housing provided self-tapping mounting screws Are screws that are driven into thread-free cast screw holes are. This also contributes to machining free manufacture of the control housing. On this is in the Usually only a compressed air connection hole with a cut internal thread provided by machining. This extensive freedom of post-processing of the control housing of the invention Air motor is an essential consideration the invention.
  • the lubricant pump is designed for larger outputs then there is a larger outside diameter of the piston and Inner diameter of the control housing required. This makes it special Measures regarding the sealing of the pressure chamber and the Storage and guidance of the piston rod necessary.
  • a particularly useful and advantageous embodiment of the The invention therefore consists in the fact that the piston rod all around Comprehensive capsule with the control housing in one piece from cast metal is formed, is radially spaced all around from the control housing, picks up the pusher, sitting on the chamber wall from this is worn and limits the pressure space.
  • This capsule and whose connection to the control housing are in one piece with the Control housing made of cast metal.
  • the pressure room is despite large piston diameter kept small in diameter.
  • the Chamber wall bridges the radial distance between the control housing and capsule and has the additional function of capsule too wear.
  • a metal insert extends through the control housing and is attached to this and takes one in an insert cavity Compression spring that sits in a spring sleeve that is in the insert cavity is displaceable and acts on one end of a switching element, the other end of which is assigned to the claw slide.
  • the insert cavity forming insert is a piece of steel that is cutting is processed and the spring sleeve and the switching element exist also made of metal parts. There are So essential components of the switching or control device manufactured with machining, which is expensive.
  • the invention therefore consists in the fact that the insert cavity forming Insert is made of cast metal and the spring sleeve as well the switching element is injection molded from plastic. It is cutting Editing avoided, which reduces the manufacturing of the control housing is less complex and cheaper.
  • the use is in the Usually held by means of self-tapping screws that are thread-free cast screw holes are driven on the control housing.
  • a retaining ring in one piece with the Control housing is made of cast metal that receives the insert.
  • the retaining ring contributes to the stable Arrangement of the capsule at.
  • the air motor according to the drawing is part of one Lubricant pump, the one in a manner not shown
  • Air motor continuing pump body forms, in the of a piston rod 1 a relatively small in diameter pump piston is moved back and forth, the component of a piston-cylinder device with which lubricant can be pumped.
  • the pump body not shown, is in an internal thread Screwed socket 2, which sits on an overall housing 3 while doing so Is part of a connecting flange 4.
  • the connecting flange piece 4 sits on one side of a control housing 5, according to FIG the other side of which a cylinder piece 6 is attached, which by a Wall 7 is complete.
  • a cage-like cover 10 is located on the control housing 5 provided that receives a soundproofing element 11 and of Screws 12 is held, which engage in the control housing 5.
  • On two opposite sides of the control housing 5 is in Fig. 3 each have a projecting closed end region Insert 13 to be seen, which is held by screws 14 on Attack the control housing.
  • the lid 10 is seated on one in FIG. 3 Not shown nozzle, from which a bead 15 starts, the first with the control housing 5 and then with the cylinder piece 6 is in one piece and in which a tubular line 16 extends.
  • the connecting flange 4 forms except the Bushing 2 a bearing 17 for the piston rod 1, a capsule cap 18th and radially to the piston rod a connecting bore 19.
  • a capsule 20 open on one side which means the capsule cap 18 is closed and the other end a Piston rod 1 comprehensive bearing 21 and with which the bearing 21 forming end piece out of the bearing housing 5, into the cylinder piece 3 protrudes.
  • a large piston 22 which defines the interior of the cylinder piece 6 in a wall-side space 23 and one Control room 24 divides.
  • the line 16 opens into the wall-side room 23 and opens into the control-side room 24 a passage 25 on the side opposite the piston 22.
  • the capsule 20 with the capsule cap 18 encloses a pressure chamber 26, to which a compressed air connection bore provided in the control housing leads on the opposite of the lid 10 Side of the control housing is arranged and in Fig. 1 and 2nd is not shown. 4 and 5 illustrate the control housing 5 and the one-piece areas or parts. Fig. 4 shows the compressed air connection hole 27. According to FIG. 5 there is between the capsule 20 and the control housing 5 radial connecting web 28 is present.
  • the floating one Claw pusher 30 sweeps over a tapered area 31 of the piston rod and engages in it with an inner stop ledge 32.
  • the ends of the tapered area 31 form steps which alternate with the reciprocating piston rod 1 on the Attack claw slide 30.
  • the claw slider is the side that is offset from the claws 30 each provided with a pair of locking grooves 33, the axial lie side by side.
  • the locking grooves 33 is a forked end of a Assigned switching element 34, the other end at the bottom of one Spring sleeve 35 is articulated.
  • the spring sleeve 35 is radial to Piston rod 1 in an insert cavity of an insert 13 back and forth can be pushed out and receives a compression spring 36 which at Moving back and forth more or less compressed becomes.
  • a retaining ring 37 is provided the insert 13 takes. This known switching device moves during the relatively slow back and forth movement of the Piston rod 1 at the end of the piston rod movement in the claw slide 30 in one direction "suddenly" in this direction.
  • a chamber wall 38 formed with a Stub 39 projects radially outward and radially inward into capsule 21 transforms.
  • the chamber wall 38 forms the passage 25 and in Stub 39 a passage 40 to line 16.
  • a distributor 41 radially to Piston rod 1 inserted.
  • the distributor 41 is in the Chamber held by the lid 10 which is annular and the damper element 11 on the radial outside of the distributor piece 41 holds.
  • the radially inner end of the manifold 41 is assigned to the pressure chamber 26 and forms an end face 42, in which a first opening, a middle opening and a second Opening are provided.
  • a straight one goes from the middle opening Channel 43 in the middle of the damper element 11 and thus to Outside space.
  • An angled channel 44 extends from the first opening an angled goes to the passage 25 and from the second opening Channel 45 to the passage 40.
  • a distributor plate 46 can be pushed back and forth, the connection cavity 47 forms.
  • the distributor plate 46 is by means of the claws of the claw slide 30 axially to and fro and connects the middle channel 43 optionally with the first channel 44 or the second channel 45 and thereby gives the transition between Pressure chamber 26 and second channel 45 or first channel 44 free. In this way, the compressed air is alternately in the wall side Room 23 (Fig. 1) or in the control room 24 (Fig. 2) guided and the exhaust air cleared the way to the outside.
  • the distributor piece 41 forms according to FIGS. 7 and 8 on that of the end face 42 opposite side a depression 48, in which the middle channel 43 opens. It is with three circumferential grooves 49 provided, snap into the sealing rings 50.
  • the distributor piece 41 is provided with two circumferential grooves of large cross-section, each of which has a circular segment recess 51 as a component of the first channel 44 and the second channel 45.
  • FIGS. 7 and 8 show the gradually tapering outer diameter of the Manifold 41, e.g. from Nutrille 49 to Nutrille.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
EP99103235A 1999-02-19 1999-02-19 Moteur pneumatique pour une pompe de graissage Withdrawn EP1030059A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE29902944U DE29902944U1 (de) 1999-02-19 1999-02-19 Druckluftmotor für eine Schmierstoffpumpe
EP99103235A EP1030059A1 (fr) 1999-02-19 1999-02-19 Moteur pneumatique pour une pompe de graissage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29902944U DE29902944U1 (de) 1999-02-19 1999-02-19 Druckluftmotor für eine Schmierstoffpumpe
EP99103235A EP1030059A1 (fr) 1999-02-19 1999-02-19 Moteur pneumatique pour une pompe de graissage

Publications (1)

Publication Number Publication Date
EP1030059A1 true EP1030059A1 (fr) 2000-08-23

Family

ID=26062281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99103235A Withdrawn EP1030059A1 (fr) 1999-02-19 1999-02-19 Moteur pneumatique pour une pompe de graissage

Country Status (2)

Country Link
EP (1) EP1030059A1 (fr)
DE (1) DE29902944U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007093244A1 (fr) * 2006-02-13 2007-08-23 Continental Automotive Gmbh Pompe à haute pression

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745387A (en) * 1953-09-25 1956-05-15 Stewart Warner Corp Reciprocating fluid motor and valve mechanism therefor
US3699846A (en) * 1970-12-30 1972-10-24 Stewart Warner Corp Air motor
WO1985002444A1 (fr) * 1983-11-24 1985-06-06 Wiwa Wilh. Wagner Gmbh & Co. Kg Moteur pneumatique pour appareils de pulverisation de peinture, pompes a graisse et autres
EP0281794A1 (fr) * 1987-02-27 1988-09-14 Böllhoff Verfahrenstechnik GmbH & Co. KG Pompe à piston pour liquide, entraînée par un moteur à piston à air comprimé
DE3916422C2 (fr) 1989-05-19 1990-08-30 Pressol Schmiergeraete Gmbh, 8500 Nuernberg, De

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891059A (en) * 1974-03-14 1975-06-24 Curtiss Wright Corp Air-cooled oil sump with fins for receiving oil in a heat exchange relationship
DE3070281D1 (en) * 1980-09-05 1985-04-18 Scovill Inc Fluid handling devices such as filters and lubricators and containers therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745387A (en) * 1953-09-25 1956-05-15 Stewart Warner Corp Reciprocating fluid motor and valve mechanism therefor
US3699846A (en) * 1970-12-30 1972-10-24 Stewart Warner Corp Air motor
WO1985002444A1 (fr) * 1983-11-24 1985-06-06 Wiwa Wilh. Wagner Gmbh & Co. Kg Moteur pneumatique pour appareils de pulverisation de peinture, pompes a graisse et autres
EP0281794A1 (fr) * 1987-02-27 1988-09-14 Böllhoff Verfahrenstechnik GmbH & Co. KG Pompe à piston pour liquide, entraînée par un moteur à piston à air comprimé
DE3916422C2 (fr) 1989-05-19 1990-08-30 Pressol Schmiergeraete Gmbh, 8500 Nuernberg, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007093244A1 (fr) * 2006-02-13 2007-08-23 Continental Automotive Gmbh Pompe à haute pression

Also Published As

Publication number Publication date
DE29902944U1 (de) 2000-07-13

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