DE3338197A1 - Cleaning system with pulsating compressed air - Google Patents

Abstract

The invention relates to a cleaning system in which compressed air is fed to the liquid cleaning agent in pulses in order to reinforce the cleaning effect and to save cleaning agent. The components of the cleaning system are arranged in such a way that the compressed air for the mechanical cleaning, usually with an operating excess pressure of 3-7 bar, can also be fed to a stream of cleaning agent which is at several times the operating excess pressure of the compressed air. In order to prevent cleaning agent entering the area of the compressed air system, a combination of non-return valves is arranged, between which there is a transparent safety connection which, as a predetermined break point, permits the excess pressure to escape in the event of a functional fault of the non-return valves.

Description

Wolfangel & Schiemann GmbH.; ".'.-".: "" .. "" .. '".."

Roentgenstr. 31 * 7257 Ditzingen 3-Heimerdingen O J OO I O /

Cleaning system with pulsating compressed air

The invention relates to a cleaning system in which the liquid Cleaning agent Compressed air is supplied intermittently in order to increase the cleaning effect and save cleaning agent.

Are sticky, thin to viscous products to be promoted, are different liquid products brought together to be mixed, If these different liquid products still trigger chemical reactions, so that · they harden within the reaction time, so are after Processing process to the parts of the systems wetted with the products to be conveyed with a cleaning agent suitable for the product clean. The cleaning agents to be used are often thin. Plant parts and connections that have to be cleaned thoroughly it is rinsed with an appropriate amount of detergent.

It is known that a thorough cleaning of viscous products To achieve the cleaning agent must be promoted with high flow rate in the system parts and connections. Around To save cleaning agent, this is also allowed to circulate in the wetted parts of the system. To do a thorough cleaning with removal Rinsing with a clean cleaning agent is necessary to reach the remaining traces of the processing product.

The invention is based on the object of determining the proportion of cleaning agent which is necessary for cleaning to reduce and to improve the cleaning success.

This object is achieved according to the invention in that a detergent throttle valve Built into the detergent supply, the amount of detergent is limited. The lack of detergent is replaced by compressed air, which is drawn via a further connection.

Wolfangel & Schiemann-GmbH ": ..." .:. * .. ■ ".. ■" .. '

Roentgenstr. 31 ♦ 7257 Ditzingen 3-Heimerdingen 3338197

leads and opens into the cleaning stream. In order to control the cleaning agent and compressed air separately, shut-off valves are provided. The compressed air for cleaning is usually available with an operating pressure of 7 bar. Plant parts and connections however, they often have to be cleaned at much higher pressures at the beginning of the cleaning phase, because of the excess operating pressure is also significantly higher than 7 bar for the processed products. Cleaning agent when the shut-off valves are opened at the same time and compressed air, the cleaning agent will flow into the duct of the compressed air due to the higher overpressure. A ball check valve, Arranged vertically, prevents a flow back into the compressed air area. As an additional security, there is the ball check valve leaks, another compressed air safety check valve and a compressed air main valve are installed in the compressed air line. Between the ball check valve and the compressed air safety check valve a transparent line of sight is arranged, which is designed for the operating pressure of the compressed air is. In the event that the ball check valve leaks, this deficiency is determined by a visual inspection. Pours detergent with a significantly higher operating pressure in the transparent safety connection, the safety ball check valve closes and the resulting overpressure is led to the outside through the bursting of the transparent safety connection. The transparent safety connection is secured by a sliding sleeve to prevent injuries if the transparent one bursts To prevent line of sight.

The advantages achieved with the invention are in particular: that the limited amount of cleaning agent and system parts and connections can be cleaned thoroughly, which is a significant Have scope of cleaning. The cleaning agent is supplemented by compressed air, which is in air bubbles in the system components pushes. The air bubbles change as they flow through and improve cleaning through this movement. When starting cleaning

Wolfangel & Schiemann GmbH - "" "3338197

Roentgenstr. 31 * 7257 Ditzingen 3-Heimerdingen

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During the process, the products to be cleaned are subjected to an operating pressure of the cleaning agent, which corresponds to the operating pressure of the Product corresponds, promoted from the system parts. Only after this main cleaning, during which the operating pressure is automatically reduced the low flow resistance decreases, compressed air flows in to intensify the cleaning process.

An embodiment of the invention is shown in the drawing and is described in more detail below:

Figure 1

Shows an arrangement of the components for the cleaning system with pulsating Compressed air. The detergent is connected to the detergent throttle valve (1). On this detergent throttle valve (1) the amount of cleaning agent required for the cleaning process is regulated. D. The detergent is detergent at the valve (2) via the T-piece (4) and the system connections (5) to the systems (6) and connections (7). The ones for cleaning The required compressed air is connected to the main compressed air tap (8). Between the main compressed air tap (8) and the T-piece (4) is located in Direction of flow of the compressed air the safety ball check valve (9), the transparent safety connection (10), the ball check valve (11) and the compressed air valve (3). Ball check valve (11), transparent safety connection (10) and safety ball check valve (9) are covered by a cover sleeve (12), which is arranged so that it can be checked.

Claims (3)

Wolfangel & Schiemann GmbH ------ ... .. Roentgenstr. 31 * 7257 Ditzingen 3-Heimerdingen OOOO I Ό I Claims The cleaning system with pulsating compressed air is characterized in that a cleaning agent throttle valve (1) the amount of cleaning agent required for the cleaning agent process is limited and the missing amount of cleaning agent is supplemented by compressed air. The compressed air for the cleaning system with pulsating compressed air flows over the safety ball check valve (9), the transparent safety connection (10) and the ball check valve (11) via the compressed air valve (3) into the T-piece (4) of the system connection (5). 2.) The cleaning system with pulsating compressed air is characterized in that the cleaning agent flows into the area of the compressed air is secured by the ball check valve (11) and that this is doubled in the event of a malfunction by an additional safety ball check valve (9) is secured. 3.) The cleaning system with pulsating compressed air is through characterized in that between the safety ball check valve (9) and ball check valve (11) the transparent Safety connection (10) is designed as a predetermined breaking point in the event of a malfunction of the ball check valve (11).