SU500365A1 - Radial piston pump - Google Patents

Description

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The invention relates to pumping pumps, in particular, pumps, which groups are equipped with hydrostatic discharge chambers, which are performed 1 in the place of interaction of the piston group with the stator ring.

Known radial piston pumps of this type, in the case of which the pressure manifold is made and the rotor is placed. The radial stepped nichshdydrichesk bore are made, the small steps of which are communicated in the bottom part by means of the joceBoro cylindrical channel. Stepped pistons with blind axial channels are located in the steps; Chaty borings. Pistons are equipped with hydrostatic unloading chambers connected to working chambers | N made in shoes interacting with the inner surface of the stator ring.

However, when using such pumps in hydraulic systems with high-speed drive motors, at the suction stroke between the piston group shoe and the stator ring,

Top: contact stresses due to centrifugal forces.

The aim of the invention is to reduce the contact loads between the shoe and the locking ring in the area corresponding to the suction stroke.

For this, the axial channel in the stepped piston is made through and communicates on one side with the hydrostatic chamber; unloading the shoe, and on the other hand, it was driven by a choke, through which it communicates with the mentioned axial channel of the Topia ro, which is constantly connected with the pump discharge manifold through, for example, a rotating spool.

FIG. 1 depicts the described radial. Piston pump, longitudinal section; fea; fng. 2 - the same cross section.

The radial piston pump has a housing 1 in which a manifold 2 and a rotor 3 are made. A rotor 3 is made in the rotor. The step-boring bores 4 are radially connected, the small steps of which are communicated in the bottom with an axial or horizontal bore 5. Stepped boring 4 have stepped steps with the axial channel 7, the wormwood communicates with hydrostatic discharge chamber 8, the large shoe 9, which interacts with the styrer ring | 10. Axial channel 7 throttle 11 connected | 6 with a cylindrical bore 5. Cid 1dritche- | The rotor boring is connected to the inlet of the collector 2 by means of an ingrowth; | spool 12; the pump will also hold the suction valve. KOL-SJQ

lecturer 13, face distribution yctH roystvo 14 and device 15 for replacing the eccentricity value of the stator collar

relative to the axis of the rotor 3.

When the rotor rotates, 3 step nopm-js

shch perform reciprocating f movement due to sliding of the shoes 8 {on the inner surface of the stator ring)

10, eccentrically installed by the middle of the device 1S about the axis of the roto-hoora 3.

In another period of the suction stroke, the pistons in the shoes 9, under the action of centrifugal forces, interact with the stator / m ring 10. The working fluid from the pressure collector 25 collects through the rotary valve 12 into the axial rotor S and then through the choke 11, the channel 7 of the piston 6 enters into the chamber of hydrostatic discharge 8 of the shoe 9, forming a liquid. . 30 film between; shoe 9 and statorny ring 10; With this, chamber 8 creates -) the pressure required to compensate for the centrifugal force f generated by the piston group, while increasing the value of the demanding magnetic force occurring during the above mentioned (speed vrashenk rotor 2 causes an increase in the magnitude of the liquid film, and an increase in speed increases the magnitude of

     40 50056

Formula and 3 about b J3 e 21 „. Jl5j

A radial-piston pump, in the case of which a full-collector G is pumped and a rotor with reedial and step-1 bore, small steps of which} are communicated at the bottom by means of an axial cylindrical channel in the rotor, and pistons are placed in the indicated step bores. with axial channels, out to the bottom of small steps of rastoyek, each piston provided with a shoe that interacts with the inner surface of the stationary ring placed in the housing to the hydrostatic pressure chamber forming the chamber connected with a channel in the shoe, and with a TeMf that .- to reduce the contact load between the shoe and the stator ring in the area corresponding to the suction flow, the axial channel in each Pist-1 is not made through, constantly communicating with the channel in the shoe, and is equipped with a throttle for communication with the aforementioned I / O channel of the rotor, which is equipped with a transmitting device, such as a rotator with a golfer, for a permanent message. pump discharge manifold. 54 tons of film. Thus, the pressure in the chamber of discharge 8, with the provision of SHEPgs, the vortex of the working fluid, g is constantly maintained and is also | and liquid lgx ekasa between the shoe. 9 .and .. st (attorney KortbiioMlO, thereby reducing the contact loads in the zone of interaction of these parts. The piston group works similarly on the discharge stroke.

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