RU1818157C - Method for cleaning part channels - Google Patents

Abstract

Field of application: in liquid-jet blasting of an open channel system having central and peripheral channels extending from it. SUMMARY OF THE INVENTION: A washing solution is fed through nozzles into the channels of a part. Nozzles suitable for peripheral channels form single-jets of helical jets in these channels, and a nozzle suitable for the central channel forms a multi-helical jets in this channel with the same swirl direction. The pitch of the jets in the peripheral channels is equal to the course of the jets in the central channel. The jets fed into the channels, washing away the pollution from the walls of the channels, are connected in the zones of intersection of the channels into an organized flow, entraining these pollution. This interaction of the flows prevents the displacement of pollution into the peripheral channels and their subsidence to the bottom of the central channel. 1 ill.

Description

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FIELD OF THE INVENTION The invention relates to fluid blast cleaning of internal surfaces of parts and can be used to clean systems of open intersecting channels of body parts, for example, clutch blocks and crankcases of automobile engines, bed frames and machine gear cases.

The purpose of the invention is to improve the cleaning quality of an open channel system having central and peripheral peripheral channels.

The drawing shows a detail and diagram of an apparatus for cleaning an open intersecting channel system.

The collectors 1, 2 are connected to a washing solution supply system. Nozzle 3 mounted on manifold 1 and nozzle 4 mounted on manifold 2 are designed

for supplying jets of washing solution, respectively, to the central channel 5 and peripheral channels 6 of the part 7.

The design of the nozzles 3, 4 provides for the possibility of forming in the channels 5, 6 screw jets with the same direction of rotation (for example, using the screw grooves), moreover, the formation of nozzles 4 single-jaw screw jets, and the nozzle 3 - multi-helical jets with the number of strokes equal to number of peripheral channels. Nozzles 4 form a helical jet, the pitch of which is equal to the course of the jet formed by the nozzle 3.

. Nozzles 3,4 are installed in the collectors 1, 2 with the possibility of changing their position relative to the longitudinal axis of the channels (for example, the holes in the collectors and the outer surface of the nozzles are mating in transition fit).

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The claimed method is carried out as follows.

The washing solution with a given flow rate under pressure is fed through the nozzle 3 into the channel 5 and through the nozzle 4 into the channels 6 of the part 7, the nozzles spin the jets along a helix. The helical jets move along the axis of the channels and remove chips and other contaminants from the walls of the channels 5, 6.

In the zones of intersection of the channels 5, b, each of the single-entry helical jets leaving the channels 6 is poured into the corresponding turn of the multi-helical jets in the channel 5. As a result, the suspended particles of pollution do not settle to the bottom of the central channel 5 and do not expel again into channels 6, and the ablation is carried out in an organized swirling flow.

The optimal cleaning mode is selected by changing the position of the nozzles 3, 4 relative to the longitudinal axis of the channels 5.6, as well as adjusting the flow rate and pressure of the washing solution.

Using the proposed method for cleaning parts provides, in comparison, the SSS Xi LbiitSXSX XSA S

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In connection with the existing ones, improving the quality of cleaning parts containing a system of intersecting open channels having central and peripheral channels due to the supply of helical jets into the channels and their organized interaction.

Claims (1)

SUMMARY OF THE INVENTION A method for cleaning the channels of parts, wherein a jet of washing liquid is supplied to each channel with a twisting of the latter, characterized in that, in order to improve the quality of cleaning the open channel system having central and peripheral peripheral channels extending from it, jets into the channels served along their axis and twist them along a helix with the same direction of Twist, and in the peripheral channels form a single-start screw stream, and in the central - multi-start with the number of entries equal to the number of peripheries s channels, the pitch of the helical channels in the peripheral jets is selected to move the jet screw in the central channel.