SU1669593A1 - Device for cleaning blind holes from loose dirt - Google Patents

Abstract

The invention relates to pneumatic hand tools for cleaning blind holes in metal structures from steel chips and other ferromagnetic particles, and can be used to improve the quality of cleaning from soils with ferromagnetic properties. The device for cleaning blind holes has the shape of a pistol, in which the barrel of a steel tube is connected to a handle case having a trigger. The barrel and body are connected to a compressed air system. A screen is installed on the barrel in the form of a glass and an electromagnetic coil that is placed in an insulating casing. Holes are made in the walls of the screen. The barrel is equipped with a replaceable tip. A switch electrically connected to the coil is mounted on the housing. 2 hp ff, 2 ill.

Description

The invention relates to pneumatic hand tools for cleaning blind holes in steel structures from steel chips and other ferromagnetic particles.

The purpose of the invention is to improve the quality of cleaning from contamination with ferromagnetic properties.

FIG. 1 shows a device side view, FIG. 2 - section A-A in FIG. 1

The device has the shape of a pistol in which the barrel 1 is made of a steel tube with a through hole 2 and has an external thread at both ends 3 and 4

One end 3 of the barrel 1 is screwed into the body of the handle 5 until it stops and at the other end 4 of the barrel 1 the replaceable tips 6 are screwed, which change depending on the diameter and depth of the holes to be cleaned

Between the housing 5 and the tip 6 on the barrel 1 an electromagnetic coil 7 is installed, placed in an insulating casing 8

On the barrel 1 there is also installed a steel screen 9 in the form of a glass. On the cylindrical surface of the walls of the screen 9 several rows of through holes 10 are made. The electromagnetic coil 7 is located behind the screen 9 Screen 9 and the coil 7 are rigidly fixed on the barrel 1 by a tip 6. For ease of device control A switch 11 is fixed in the upper part of the housing 5, which is electrically connected to the electromagnetic coil 7 Switch 11 provides the polarity change of the magnetic field of the coil 7 supplied from the mains DC voltage cm for example, 24

In the handle case 5 there is one longitudinal through take away 12 with an internal thread at both ends. The opening 2 of the steel tube 1 is connected to the opening 12.

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handle bodies 5 for supplying compressed air.

 The housing 5 is also made one transverse through hole 13.

A housing 16 is fixed on the housing 5 by means of a pin 14, pressed into the lugs 15, which rests on the rod 17 located in the transverse bore 13 and pressed from the opposite side by a spring 18 held in the bore 13 by a stopper 19 to prevent the stem 17 from being pressed out by the spring 18, from the opening 13, the trigger 16 is designed in such a way that it has a restriction on the return stroke, resting the projection 20 against the housing 5.

In the lower part of the housing 5, a threaded bore 21 is screwed into the hole 12, to which a hose 22 is connected from a pneumatic system (not shown) supplying compressed air under pressure, for example, 4-6 atm,

The device is intended to clean the blind holes by blowing with compressed air.

In order to blow the chips out of the blind hole, the end 3 of the barrel 1 with the tip 6 is directed into the blind hole of the part by sequentially turning on the electromagnetic coil 7 with the switch 11 and pressing the trigger 16 for compressed air supply

The chips, ejected from the hole being cleaned, fall into the inner region of screen 9 and are held there by a magnetic field created by an electromagnetite coil 7, therefore the chips are not flying apart, but accumulate in the inner cavity of screen 9.

Excess air escapes from the cavity of the screen i 9 through the holes 10. After turning off the compressed air supply using the trigger 16 and switching the polarity of the electromagnetic coil 7 using the switch 11, the chips collected in the cavity of the screen 9 are exhausted and cleaned into the container.

At one time, it is possible to blow out chips from several blind holes before filling the cavity of the screen 9 with chips.

The speed of the ejected chips can be extinguished additionally with the help of grease (e.g. cyatime 201) applied to the inner surface of the screen 9.

The device allows to increase the cleaning efficiency of blind holes from crushed steel shavings, as well as other contaminating particles by feeding into the zone

cleaning a turbulent jet of air under pressure that penetrates to the full depth to the end of the blind hole, increase safety of labor by trapping chips and particles flying out of the hole and

protecting the worker from chips using the screen, increase the production culture due to the compact design, ease of use (use), as well as keeping chips and other particles in the cavity of the screen

with magnetic field and / or grease.

The device can be used in all branches of the national economy in the machining of blind holes in

Claims (3)

1.Device for cleaning deaf holes from loose contaminations, comprising a housing with a handle in which there is a nozzle with a nozzle, connected by means of a valve with a compressed air supply system, and a collection of bulk solids with a screen placed in it, mounted coaxially with a nozzle, characterized in that. that, in order to improve the quality of cleaning from soils with ferromagnetic properties, it additionally contains an electromagnetic coil with an insulating casing installed coaxially with the nozzle and rigidly connected with one end to the body and the other to the screen, and the screen is made in the form of a glass, covering the nozzle. 2. The device according to claim 1, that is, with the fact that in the walls of the glass are made radial holes. 3. The device according to claim 1. is distinguished by the fact that the valve is located in the handle of the housing. TO