DE20115013U1 - Surface-cleaning blasting process involves supplying additional blasting medium upstream of nozzle with throat - Google Patents

Abstract

The blasting process involves supplying an additional blasting medium under pressure into the main stream with the aid of an adaptor (16). this takes place directly upstream of a blasting nozzle (18) with a throat (62). The blasting media are combined in such a way that they pass through the throat at a sonic or supersonic velocity.

Description

Jens W. Kipp

Klashofsiedlung 3 33659 Bielefeld

10.09.01

Blasting device Description

The invention relates to a blasting device with a blasting nozzle and a pressure source for supplying a blasting medium under pressure to a blasting nozzle with
Performance increases through the supply of one or more additional blasting media via one or more connections in front of the blasting nozzle.

Blasting devices are used to clean surfaces with the help of a mostly
gaseous blasting medium, to which an abrasive blasting agent such as sand or the like may be added. It is also known to use dry ice or
This has the advantage that no complex precautions need to be taken to dispose of the blasting agent, as the blasting agent evaporates after use. In addition, due to the low
Temperature of the blasting agent of approx. - 78 degrees leads to embrittlement of the layers to be cleaned and, as a result, ultimately to
intensive cleaning effect

With regard to quick and intensive cleaning of larger areas, it is
It is desirable that the jet of a jet nozzle is spread out as widely as possible at high air speeds. For this purpose, various nozzles are known that have a
fan-shaped or circularly expanded jet. Conventional blasting systems / blasting hoses in the field of dry ice blasting technology can only absorb limited air output. Due to this limitation, the output
of the usual jet nozzles.

The object of the invention is to create a blasting device which allows a wide fanning out of the beam without causing increased wear or damage to the blasting medium.

The object is achieved according to the invention in that one or more
several devices) are installed to accommodate one or more connections. The devices are designed in such a way that turbulences leading to premature wear or destruction of the blasting medium are avoided or minimized

become.

By additionally supplying one or more gaseous blasting media upstream of the jet nozzle, the jet of the jet nozzle can be fanned out significantly larger while maintaining the optimum cleaning effect
required high speed of the blasting medium(s).

Advantageous embodiments of the invention emerge from the subclaims.

Preferably, the pressure and volume output of the pressure source(s) is matched to the jet nozzle in such a way that the jet medium(s) at the constriction of the nozzle
speed of sound or almost sonic speed. Due to the
The design of the jet nozzle and the Laval effect achieved thereby allows the
Blasting medium or the blasting media together with blasting media(s) are then in the downstream part

the nozzle to supersonic speed, so that a particularly intensive cleaning effect is achieved.

The supply of an additional blasting medium or several additional
Blasting media upstream of the blasting nozzle can be supplied via an adapter with one or more connections, in which the additional blasting media is fed in a ring shape to the blasting medium carrying the existing blasting media.

The supply can also be done via several individual nozzles in an adapter, which
are arranged in such a way that turbulences leading to wear/destruction of the blasting medium are avoided or minimized.

The adapter can also be adjustable with regard to the amount of air to be absorbed / the speed of the air supplied
15

The feed can also be made via an additional Y-shaped connection or a connection with a preferably flat feed angle or via an adjacent connection. Instead of one, several connections can also be arranged in this way

The above-mentioned versions can also be combined with each other.

In the following, preferred implementation examples are explained in more detail using the drawings.

Show it:

Figure 1 a schematic drawing of the overall structure

Figure 2 shows a schematic longitudinal section through an adjustable adapter with
ring-shaped air supply

Figure 3 shows a schematic longitudinal section through an adapter with air supply through individual nozzles

Figure 4 is a schematic drawing of a Y-shaped feeder

Figure 5 shows a schematic longitudinal section through an adapter with adjacent connection

Figure 6 is a schematic drawing of the overall structure with additional

Addition of blasting media

Figure 7 is a schematic drawing of the structure of a jet nozzle on a

rollable base

Claims (8)

1. Blasting device/blasting method with a blasting nozzle 1 and the supply of an additional blasting medium/several additional blasting media under pressure upstream of the blasting nozzle 1 through an adapter 2 by means of the supply of blasting medium/blast media 3 from the blasting system 5 and additional supply of blasting media 4 through the pressure source 2. Blasting device with a blasting nozzle 1 and the supply of an additional blasting medium/several additional blasting media under pressure upstream of the blasting nozzle, characterized by an adapter 7 with an annular supply of the additional blasting medium/the additional blasting media 4 3. Blasting device with a blasting nozzle 1 and the supply of an additional blasting medium/several additional blasting media 4 under pressure upstream of the blasting nozzle, characterized by a supply through adapters with individual nozzles 8 4. Blasting device with a blasting nozzle 1 and the supply of an additional blasting medium/several additional blasting media 4 under pressure upstream of the blasting nozzle, characterized by a supply by means of a Y-shaped connection/several Y-shaped connections by means of adapter 9 5. Blasting device with a blasting nozzle 1 and the supply of an additional blasting medium/several additional blasting media 4 under pressure upstream of the blasting nozzle, characterized by one or more adjacent feed(s) 10 6. Blasting device according to the preceding claims, characterized by a combination of two or more of the preceding claims 7. Blasting device according to one of the preceding claims, characterized by an additional supply of blasting agent(s) 8. Blasting device according to one of the preceding claims, characterized by the construction of a blasting nozzle 1 with adapter 2 on a rollable base 11 for cleaning floors, other walkable surfaces