SU795921A1 - Shot throwing apparatus protective plate - Google Patents

Description

(54) EMPLOYMENT PLATE OF CRANKSHIP EQUIPMENT

one

This invention relates to the cleaning of articles with a free abrasive.

A known protective plate of shot-blasting apparatuses containing reflectors, the working surface of which has a corrugated shape.

A disadvantage of the known device is the rapid wear of the protective plates.

The purpose of the invention is to increase the durability of the protective plate.

This goal is achieved by the fact that the corrugations of the working surface of the reflectors are made in the form of chevrons located in the middle along the torch axis of the fraction, and directed in the direction of the rotor curvature, and the chevrons have a trapezoidal cross-section with an apex angle of 50 b.

In FIG. 1 schematically shows the proposed device, a general view} in FIG. 2 shows section A-A in FIG. 1} in FIG. 3 shows a section BB in FIG. 2

In a shot-blasting apparatus with a rotor 1, rotor blades 2 and an injection mechanism 3, the inner surface of the housing 4 has an upper protective plate 5, a lower protective plate b and

back protective plate 7. The working surface of each protective plate has reflective fins 8 in the form of chevron with straight bends 9 at the ends directed against the tips. Reflective ribs have a trapezoidal cross section. The back side of the keikd of the protective plate is provided with seats for

o fastening to the body 4.

The proposed device works in a manner

In the process of processing parts with a shotgun, a rebound flow acts on the shot-breaking apparatus, the shot of which first falls on the chevron-located reflective ribs 8 with the bends 9 of the top 5 and bottom b of the protective plates. The reflection of the ricket flow occurs with its division into two oppositely directed parts and the formation of a turbulent barrier, which facilitates the redemption of the fraction energy. Besides the angle

The 5 slope (o4) of the protective plates is selected from the condition of the minimum fraction falling into the apparatus. Part of the turbulently moving fraction is picked up and ejected by the rotor blades in the rotor.

The unproductive flow is again on the protective plates, now 5.6, and 7. And at this stage, the unproductive flow takes on the reflective fins, which divide the flow into opposing, mutually neutralized parts.

The cross-sectional shape of the reflective ribs with the angle at the apex, the ratio of the upper base of the trapeze to the height, 1.0-1.2, and the angle of inclination of the ribs relative to the direction of the axis of the fraction torch 20-25 contributes to the fact that the angle of attack of the fraction armored plates do not exceed 30-5o and its harmful effect is minimized.

Claims (2)

1. The shot-blister protective plate containing reflectors, working ( i / city / The surface of which has a corrugated shape, which is distinguished by the fact that, in order to increase its durability, the corrugations of the working surface of the reflectors are made in the form of chevrons, located midway along the torch axis, shot, and are directed by the edges in the direction of rotation of the rotor. 2. Plate according to claim 1, characterized in that the chevrons have a trapezoidal cross-section with an apex angle of 50 -60 .. Information sources, taken into account in the examination “,. 1. P1 attenband-Durch1aufmach pep of Georg Fischer WPC 4 / 1205-10, 1973.