DE1812635C3 - Radial piston pump - Google Patents

Description

⁽⁴³⁾

bound distribution channels (25) on both free conditions the associated housing wall
Ends have the same mouth shapes, the suction The invention cherishes the task of train round, one

or pressure channels (29, 30) only at one end 30 radial piston ^{machine de} 'JjX "^" * ¹ ? * ⁶ ; "connect and at the other end grooves (35, type to indicate that a ^ει

Ring area (37) on the walls of the rail space and the pressure spaces each rest through one of the risers (1), which are a width of about the ben axially loaded O-ring sealed to the outside diameter of the pressure space depressions (42) 40. ORm _n in

has, and that the distribution channels (25) axially

Run and roughly in the middle of the ring area the pressure space Vert.efungen between neighboring and print space depression end. Washers, on the one hand to make these washers elastically

4. To press the radial piston pump after one of the pushes against each other, which causes the usual claims 1 to 3, characterized in that a 45 to be saved, and to the pressure stroke of the receding part of the outer end faces of the piston to rush a seal to the outside, of the disks (21, 22) as hydrodynamic As the piston carrier disks are located under the lip Axial bearing (39, 39 ', 40) is formed. the change in pressure by only a few hundredths of a milli-

^{Moving 6} meters, such an O-ring is sufficient

50 off. Since the distributor cable passes through the O-ring

nails of the individual discs connected to one another

are, it is sufficient to use the pressure and suction channels respectively

The invention relates to a radial piston to be provided only on one side in the rail carrier, whereby the pump with a drive shaft and two relatively considerable structural simplifications ergezu each other rotatable parts, one of which is 55 ben. There is also no difficulty in arranging more than (piston carriers) at least two disks with two radial disks of this type next to one another, standing cylinders for receiving the pistons in order to increase the performance of the pump.
as in each case from the inner end of the cylinder to the end face. It is also advisable if the

the disc has distribution channels leading to the disk and connected distribution channels at both free ends of the other (track carrier) have a curved path to guide 60 sliding mouth shapes that carry suction or suction of the outer piston ends and connect with suction and pressure channels only at one end and at and Pressure channels is provided, which are provided at the other end of the disc grooves m the Wafld of the web carrier end face with the distribution channels, the shape of the mouths of ken, with reflect between at least two discs to the suction and pressure channel. The pressure spaces, which are sealed despite the outside movement and are formed by circular depressions 6 _{S of} the discs, are provided, which allow pressure equalization with the adjacent cylinder space, which was only possible with one-piece piston carriers.

In a known arrangement of this type (fran) it is preferably ensured that the outer

I 812635

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End faces of the disks n ^ t a ring area on th 35 and 36 are provided, which the mouths 32 rest against the walls of the web carrier, the one and 33 mirror. Between the end face 26 of the width of about the diameter of the Druckraura disc 21 and the wall 31 of the cover 2 results in depressions, and that the distribution channels axially an annular transition surface 37, inner wheel and approximately in the middle of the ring area and S of which Orifices 28 of the channels 25 and the pressure chamber end. This creates a particularly good orifices 32 and 33 of the suction and DrucWcanaie ter pressure compensation, namely a relative 29, 30 lie. The area 38 within the via height surface pressure to the sealed end face gangsfläcben ring 37 jumps made in bcneibe ii surfaces. No canting is to be moved back here. Outside the ring 37, there is an annular groove 39 , because the pressure chambers lie radially at the level of the end face areas to be pressed on with outwardly leading radial grooves 39. hen so that the remaining surface areas 40

It is also advantageous if a set-back result in a kind of floating bearing. The area Part of the outer end faces of the disks as the hy-overlying end face 27 of the disk 22 is in hydrodynamic form Thrust bearing is formed. This is more of a wise execution

not only the area to be pressed is reduced in size, 15 at the contact surface 41 between the two

so that one behaves with relatively small pressure chambers- disks 21 and 22 are seven in disk 22

nismäßig large specific surface pressures receives circular indentations 42 attached, each

Rather, an O-ring 43 is received in the outer area. The diameter of the

floating storage achieved, through which the re-indentations 42 and their position is so, ^ aB respectively

Exercise is reduced w an axial channel 25 is completely encompassed. To this

The invention is described below with reference to the way in which a pressure space is created. Be at the same time The drawings of the exemplary embodiments shown explain the channels 25 in the two disks 21 and 2 in more detail. It shows connected with each other in a sealed manner. u.

1 shows a longitudinal section through a pressure medium conveyed by the pump, which is longitudinally

according to radial piston pump, * 5 of the transition surface 37, between piston 24 and

F i g. 2 shows a cross section through the pump of the cylinder 23 or along the contact surface 41

Fig. 1, the cut in the upper half penetrates longitudinally outside, collects in space 44 and can

the transition area and in the lower half lengthways from there via a channel 45 and a nozzle 40

the contact surface of a piston carrier disk can be drained. .

and 3 ° To start the pump, the

3 shows a partial view along the line AA driven in shaft 15 and the path 6 eccentric

_F ig 1 adjusted to the shaft with the handwheel 12th Then full

Ei'n housing or track carrier 1 has two Dek- each lead three pairs of pistons and a suction stroke

kel 2 and 3, the three pairs of pistons separated by a spacer ring 4 a Dnickhub, while the

and are held together by means of screws 5. A 35 bente pair of pistons straight its lower or upper

Ring6, on the inside of which has reached a circular course dead center. With the present export

venbahn7 is formed, the upper cross-country trails in FIG. 1 can work around a housing example

Swivel most pin 8. On the opposite in the pressure stroke. As a result, the intensification

At the end a pin 9 is provided, via which a block fung 42 under the pressure of the pump pressure medium,

10 engages, which by means of a threaded spindle 11 and 40 so that the two discs 21 and zz on this

a handwheel 12 can be moved back and forth. Set apart and against the walls Jl una M This adjustment arrangement rests in an attachment 13, the cover 2 and 3 are pressed. Therefore, the fastening by means of screws 14 to the web carrier 1 results in a good seal at the transition surface 37.

: ,, tune. But as soon as the piston in question the

_is tung. But as soon as the bee

A drive shaft 15 is in two plain bearings 16 45 pressure stroke has ended, also leaves a pressure in the lid 2 and 17 held in the lid 3 and recess 42 and accordingly the pressure means; ines ball bearing 18 pressure on the associated area of the transition secured against axial displacement. The shaft 15 carries on a toothing surface 37 after what the wear corresponding to 19 a piston carrier 20, which consists of two discs 21 is reduced. It follows that there are two rings and 22. Each disk has seven radially extending cylinders, which are arranged in the same way 21 and 22 with their transition surface 37, are always only slightly spaced apart, are then pressed on to an increased extent when the 23, in which pistons 24 are displaceable. this is necessary for sealing reasons.
When the shaft 15 rotates, the pistons are caused by modifications in the exemplary embodiment

Centrifugal force pressed against the web 7 and made depending on the invention. For example after the eccentricity of the track ring 6 with respect to 55, the channels 25 do not need to be axially parallel Shaft 15 pushed radially inwards. fen. By inclined guidance you can achieve that

Each cylinder 23 is at the inner end with a piston 24 pulled even further inwards parallel to the axis extending channel 25 connected. These and nevertheless the mouths 26 of the channels this channel penetrates both discs 21 and 22 from further outside. There can be more than two one outer end face 26 to the other end face 60 disks 21 and 22 are provided 27 and there has an orifice 28, which his NEN cylinder can with the help of axial channels The entire cross-section corresponds to the cover 2. The sealing of the channels between the two a suction channel 29 and a pressure channel 30, see the panes again through the in the inner wall 31 of the cover 2 to teÜringför- O-rings. The second disk 22 does not need any either moderate orifices 32 and 33 in the form of grooves 65 pistons and can optionally use a separate connector to lead. In the cover 3 there are 34 small thicknesses on the inner wall,

For this purpose 2 sheets of drawings

Claims (1)

ι 2 French patent specification 1540451)! are provided with piston bearing disks, which are axially pressed apart by springs, so that each cylinder 1. Radial piston pump with a drive shaft ^^^ and two relatively rotatable parts, β S ^ön ^ _n ^ ™ «^ Ä? _n ΓΛ5Ϊ of which one (piston carrier) is at least »». B «de S ^ cito b ^ ⁿ ™ ^fle *« J »™ ^r ^ two disks with radially standing cylinders for BJg ^ SS ^ J ηΠϊΛϊη are with Recording of the piston as well as JeWe ₁ Is vom ZyIm- ^^^ ζ ^ Ι ^ η and therefore act as the inner end to the face of the disc Wh- den ^ T ™ * ™ "? ^1. " _{HUfe the} contact pressure of the rende distribution channels and the other "gnÄ" "J ^ LfSdTkSu iSte SchSfS (Babnträger) a curved track to guide the Jf "" ^ 5 _and a separate suction channel outer piston ends as well as with suction and its own urucKKanai uuu β Pressure channels are provided, which on the disk ^TO ? 5. ^e J ™ «tn.kti _Q n required because of the springs face together with the more expensive- these ^ gJ ^ SSu ^ ki ^^ act, with between at least two discs 15 and the
ben sealed to the outside, by circular ^f ^ Well-built pressure rooms provided ^^^ ^
which are connected to the adjacent cylinder space of the discs to the
are connected, marked by this is not possible. ^ French patent net that the distribution channels (25) in two ». Be ^ f ^^^ f ^ J ^^ iu ^ ll disks (21, 22) adjacent cylinders (23) script 1122 271 US AP aten step ^^ A