DE2808176A1 - Beverage tank interior cleaning control - by contact switches actuated by cleansing fluid jets - Google Patents

Abstract

The interior to tanks contg. beverages e.g. milk or beer, is cleaned by introducing a cleaning fluid through spray nozzles which are either stationary with an all-round action or rotary. Contact switches are located at the most inaccessible spots of the tank to indicate whether the cleansing fluid jet has reached them or not. This results in an automatic tank cleaning system which ensures that all interior walls have actually been flushed and disinfected.

Description

Company 2053 Buchen, February 20, 1978

OTTO TUCHEHHAGEN λ Berliner Str. 10

2Ο59 beeches Tel. 04155/49 2Ο2

PATENT APPLICATION

Applicant:

Company OTTO TUCHENHAGEN, Berliner Str. 1O, 2059 Buchen

Process for cleaning the inside of food tanks

The inside cleaning of a food tank, e.g. for milk or beer is now done through spray nozzles that are fixed or rotating inside the tank. Through these spray nozzles, some of which are just simple exit holes the cleaning and disinfecting liquids against the Inner tank wall injected. The interior cleaning is due the bacterial formation of paramount importance. One therefore determines automatically the Sequence of cleaning fluids to be injected, automatically determines the prescribed temperature of the cleaning fluid, automatically monitors the required cleaning fluid pressure so that all nozzles are fully charged and relies on all surface particles inside the tank having been safely reached by the cleaning liquid.

In prospectus no. 308 from OTTO TUCHENHAGEN, Buchen, are the types of tank cleaner used today are shown. The spray heads shown on page 3 have spray holes

909836/0068

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on, through which the introduced cleaning liquid more or is sprayed less specifically against the inner wall of the tank. You spray continuously for a predetermined period of time - but also at intervals so that you don't get too much cleaning fluid into the tank to get.

Fig. M 55 in the attached brochure shows an inside tank cleaner with the injection nozzles rotating.

Fig. G 5 and G 9 of the attached brochure no. 3O8 show rotating spray heads, which the cleaning liquid against the Fling the inner wall of the tank.

With all tank cleaners, you can rely on the automatic monitoring of the minimum spray times and on compliance the minimum temperatures and the minimum pressure of the cleaning fluid.

After the cleaning process has been completed fully automatically, it is assumed that the tank has been properly cleaned and disinfected is. A daily check of the actual cleaning effect is not found to be necessary due to the automatic monitoring of all criteria, nor would it be in practice feasible.

The fully automatic tank interior cleaning has a dangerous loophole. It is not controlled by any fully automatic Tank cleaning system given the guarantee that the cleaning liquid really reaches all parts of the surface inside the tank Has. The fully automatic system shows that it has been carried out properly the cleaning aisles even if, for example, an outlet nozzle is blocked or contaminated and the exiting cleaning jet cannot reach the inner wall of the tank, for example, or if, for example, the rotating spray heads are defective and cannot have a cleaning effect, because the inner surface is then only partially reached. Despite a defect, it is automatically registered that everything is in Order is: spray times, temperature and the required Cleaning fluid pressure.

It is the object of the present invention to close this monitoring gap.

The object is achieved in that one or more contact switches are mounted inside the tank, which are activated by the beam the cleaning liquid to give commands. If, for example, the cleaning jet does not reach the contact switch, this logically e.g. at the most unfavorable point in the tank is attached, a corresponding command is triggered, e.g. to block the automatic system or to issue an alarm.

In the case of a stationary nozzle, the cleaning jet must e.g. constantly pressurize the contact switch so that it cannot issue a command. This gives you the guarantee that on The cleaning liquid has definitely gotten to this inconvenient place inside the tank.

Two contact switches inside the tank can be used, for example, to monitor that the injection nozzles are actually rotating. In The cleaning jet must have passed both contact switches at a certain time interval. If the cleaning jet fails to appear for any reason or if it is too weak, so the contact switches in the interlocking circuit give the corresponding command.

An exemplary embodiment is explained with reference to the accompanying drawing.

The contact switches 5 and 6 are located in the tank 1 with the outlet 2, the manhole collar 3 and the manhole cover 4 At E, cleaning fluid enters the tank interior cleaner 7, rotating e.g. in the warehouse IO, in a known manner A to flow off again. The outlet nozzles 8 and 9 are advantageously positioned so that they are aimed at the most unfavorable places for cleaning. Here are advantageous the contact switches 5 and 6. The cleaning jet 11 passes the contact switch 6 and after 180 ° rotation it happens Cleaning jet 12 in its position 12 'the contact switch 12.

The contact switches 5 and 6 are connected to the switching element 13 via the cables 5 'and 6'. From this, according to the invention, a command is issued via the cable 14 when the alternating actuation of the contact switches 5 and 6 fails when they is interrupted by a fault. The cleaning jet 11 is therefore guaranteed to hit the outermost corner of the tank and surely sweeps the inner wall all around, e.g. in position 11 '. The critical corners between the manhole cover 4 and the manhole collar 3 are safely reached all around by the cleaning jet 12. So there is a guarantee that the tank cleaner rotates properly, that the pressure of the cleaning fluid is sufficient, that the nozzles are properly directed and open, and that the cleaning fluid reaches the most critical inner surfaces of the tank.

In the case of a stationary tank cleaner, which is provided with numerous spray nozzles, contact switches can be attached at particularly critical points and the command can be given if the contact switch is not actuated by a cleaning jet. When the inside of the tank cleaner is rotating, contact switches 5 or 6 can be used to operate a counter that gives the stop command when the number of revolutions has been completed. This contact switch then ensures that the cleaning liquid has worked reliably regardless of a time setting through predetermined revolutions. Of course, there are many switching options with the contact switches to monitor that the spray liquid reaches places that are particularly difficult to access. According to the invention, an automatic control function h @ i Bau & r or Xntsrwall cleaning spray in the T & nkinnesen g @ s ± chezt ₀ because the cleaning jet itself takes over the command.

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Claims (3)

PATENT CLAIMS 1. Vex drive to the interior cleaning of food tanks (I) / are introduced into the tank cleaner of any shape (7) in rotating or standing design, through which in a known manner through outlet nozzles (8) and (9) or corresponding holes cleaning liquid exits to rinse the inside of the tank, characterized in that a cleaning jet (11 or 12) for the purpose of issuing commands a contact switch (5 or 6) actuated. 2. Procedure for cleaning the inside of food tanks according to claim 1, characterized in that with interval flushing or with rotating outlet nozzles (8 and 9) one or more contact switches (5 and 6) are actuated by the flushing liquid, which are in a dependent interlocking circuit then release a command if the predetermined one Interval switching by a cleaning jet does not take place. 3. A method for cleaning the inside of food tanks according to claim 2, characterized in that an odez multiple contact switch (5 and 6) is on a counter which, after the injection interval has been resolved, vexus issues a command.