DE1871873U - HYDRAULIC HIGH PRESSURE RADIAL PISTON PUMP. - Google Patents

Description

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Patent attorney Dipl.-Ing. W. Scherrmann

73 Esslingen (Neckar), Fabrikstrasse 9, PO Box 348

March 28, 1963 Telephone

Gm 1 rÜWi Stuttgart (0711) 356539

Telegrams patent protection "" Esslingenneckar

Strassaeker oil hydraulics Dr. Hans Stamssacker, Esslingen aN ". V \ ^: ülmer Str. 36 -

Hydraulic high pressure radial piston pump

The innovation concerns a hydraulic one. Hoehdruek radial piston pump with at least two pump cylinders, their associated pistons with an eccentric mounted in the pump housing '" optionally adjustable eccentricity are driven.

Such hydraulic high-pressure radial piston pumps are known in numerous embodiments. It is all of them Common feature., - that for repairs a proportionate a great deal of working time is required to get to the mostly sensitive pump elements in need of repair reach. These pump elements can usually only be exchanged when the pump is at a standstill and dismantled into its individual parts possible ..

The aim of the innovation is to remedy this. To this The purposes of the radial piston pump according to the innovation are the individual pump cylinders with the pistons arranged in them each designed as a separate, exchangeable pump unit, optionally from the outside in the corresponding, on the circumference of the pump housing Openings arranged freely accessible can be used and each has a suction valve and a. ,, on the piston

Patent attorney Dipl.-Ing. W. Scherrmann, Esslingen (Neckar).

page 2

acting compression spring included.

In the drawing is an exemplary embodiment of the subject of the innovation. Show it:

Fig. 1 shows a radial piston pump according to the innovation in the axial Section, together with a pump insert, in a side view and

FIG. 2 shows the radial piston pump according to FIG. 1 in a front view, with inserted pump inserts.

An eccentric shaft 2 is supported by means of ball bearings 5, 4 in an essentially cylindrical pump housing 1. Your eccentric 5 carries a ball bearing 6 which is arranged in a pump chamber 7 to which a pump inlet indicated at 8 leads. ■.

A number of cylindrical openings 9 are arranged on the circumference of the housing 1, each of which communicates with the pump chamber J via a threaded hole 10 and each serves to accommodate a pump unit 11 *

A pump unit II is each in the manner of a threaded plug formed, which is provided at 12 with a wrench attachment and at 13 with a thread that fits into the threaded hole 10 is. It contains a longitudinal bore 14, which acts as a cylinder

Patent attorney Dipl.-Ing. W. Scherrmann, Esslingen (Neckar) /

_; "■.. 'Sheet J5

is used and in which a piston 15 is movable, while an outgoing outlet 16 in the region of a side wall at. Set pump unit is connected to a pump outlet IJ which contains a pressure valve l8. The piston 15 has a longitudinal bore 19 in which a locking member 20 is movable, one end of which is designed as a piston tappet at 21 and is actuated by the outer ring of the ball bearing β placed on the eccentric 5 when the pump unit is inserted. The other end of the valve closure piece 2G protrudes somewhat beyond the end face of the piston 15 at 22 when the piston longitudinal bore 19 is closed by the valve closure piece 20. A compression spring 2j5 arranged in the longitudinal bore 14 is supported on the end 22 of the valve closure piece 20. Its diameter is chosen so that it comes to rest on the end face of the piston 15 when the longitudinal piston bore 19 is open.

The pump piston 15 is each of the eccentric 5 in the Cylinder bore 14 pushed in during the return movement under the action of the compression spring 2 ^ happens .. Here is the suction valve I9, 20 arranged in the piston I5 is open, since the spring 2J is initially on the valve closure member 20 supports.

The individual pump units 11 can be exchanged without it being necessary to shut down the pump when the entire pump is arranged so that it is below the oil level

Patent attorney Dipl.-Ing. W. Scherrmann, Esslingen (Neckar)

Sheet 4

gel lies.

Due to the special design of the pump units 1-1 and their suction valve, the pump is up to a suction height of 500 me self priming. If the pump is installed above the oil level as with all other pumps, oil must be pre-filled. Because the pump is self-contained and self-priming it can be arranged in any installation position regardless of the tank and drive unit. This is advantageous that the pump outlets I7 and the pump inlet 8 are arranged on one end face of the housing 1.

The pump can of course with pump units 11 different Delivery capacity and different delivery pressure can be equipped. These individual structural units, which are different Have features allow the pump to be selectively switchable. In addition, the pump can through Corresponding structure and corresponding arrangement of the individual components also as a re-high pressure pump or with an adjustable one Eccentric 5 is used as a regulating pump or as a zero stroke pump come.

Claims (1)

P.A.232't58-5.4.63 / Patent attorney Dipl.-Ing. W. Scherrmann, Esslingen (Neckar) / Sheet 5 Protection claims 1. Hydraulic high pressure radial piston pump rait at least two pump cylinders., whose associated pistons are replaced by an im Pump housing mounted eccentrics are driven with optionally adjustable eccentricity, characterized in that that the individual pump cylinders with the pistons arranged therein are each designed as their own replaceable pump units are, optionally from the outside in corresponding, on the circumference of the pump housing freely accessible arranged openings can be used, and in each case a suction valve and one on the Piston acting compression spring included. 2. Radial piston pump according to claim 1, characterized in that the individual pump units can be exchanged while the pump is running are. J. Radial piston pump according to Claim I _3, characterized in that the pump inlet and the outlets of the individual pump units containing pressure valves are arranged in the region of an end face of the essentially self-contained pump housing. H-. Radial piston pump according to Claim 1, characterized in that the individual pump units inserted into the pump housing have different delivery rates and / or different delivery pressures. Patent attorney Dipl.-Ing. W. Scherrmann, Esslingen (Neckar) Sheet β 5 · Radial piston pump according to claim 1, characterized in that that the pump units inserted into the pump housing act as regulating or zero stroke pumps. 6. Radial piston pump according to claim 1, characterized in that that at least one pump unit is self-priming. 7 · Radial piston pump according to claim 1, characterized in that that the pump units are each designed in the manner of a threaded bolt provided with a key attachment, the one side closed longitudinal bore serving as a cylinder has, one of which in the area of the side wall is connected to the respective pump outlet when the pump unit is inserted Exhaust duct goes off, and in which the compression spring is arranged, which, when the suction valve is closed, is on an in a longitudinal bore of the piston movable suction valve closure piece and when the suction valve is open on the piston face supports. 8. Radial piston pump according to claim "J, characterized in that the suction valve closure piece is designed on one side as a piston tappet cooperating with the eccentric and on the other side projects a small amount beyond the piston face. T ; ^ fSÜ ^b "" i: ^a! 5 ™ T.: 2 · '* f * ^{ä e} Nereichre _; she deviates / on where * - .. * «...« [/ Al. . JVi ₄ ^ iΰΠ «ΟΙΘ ΚΟΠΠΘΠ GCISi Jifeff 0ΠΠ6 MciGtlVV ei UuIit MUr / \ Πι 1 \ jQ WSfGSn ΛΪΘΓνΟΠ QUCn FotOlcQDiGrt Gtißr Pil German patent office, utility model office.