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Pumps for industrial Cleaning

Surface & Component Cleaning

The industrial cleaning sector deals with the cleaning of surfaces and components of all different types and materials. In general, the cleaning techniques are differentiated as follows:

·    Manual cleaning techniques
·    Mechanical cleaning techniques
·    Automatic cleaning techniques
·    Robot-supported cleaning techniques


Cleaning of components and workpieces

The starting point is the workpiece to be cleaned (cleaning part) from which undesired materials, such as chips, dust, oils, greases, dirt and deposits or other impurities or contamination, need to be removed. Workpieces may consist of untreated or barely untreated pieces (such as steel parts, metal plates, wires), and also of already processed or even assembled parts.

Manual cleaning vs. cleaning robots

Dimensions and sizes can be very important for the cleaning methods to be selected. Long marine shafts are usually cleaned by hand, whereas small shafts for electrical equipment, e.g. as bulk material, can be cleaned using highly automated systems. The external cleaning, e.g. of ships, can be performed by cleaning robots, such as those offered by KAMAT in the framework of high-pressure cleaning.
The geometry of parts is of similar importance. Long, thin-angled boreholes, in which clamped chips may still be found, present one of the challenges in this special field.

Cleaning pumps with high water pressure

In general, pumps ensure the supply of cleaning equipment with water or other cleaning agents and simultaneously provide sufficient pressure. In many cases, pump manufacturers even offer complete cleaning systems.
The decision on which pump is used depends on the specific application and its requirements.

 

Application examples for pumps for cleaning surfaces and components

·    Surface treatment
·    Parts cleaning
·    Pipe cleaning
·    Metal cleaning
·    Bottle cleaning
·    Box cleaning
·    High-pressure cleaning
·    Jetting
·    Washing plants
·    Building exterior cleaning
·    Ship side cleaning

Pumps for industrial cleaning processes

Typical pumped media in industrial cleaning

·    Water
·    Solvents / cleaning agents
·    Acids & lyes

Successful application solutions

Cleaning with an aqueous cleaner as cleaning media.
A further condition when choosing a cleaner is then the question of whether it must be cleaned on site which may be the case during repair and maintenance.

Usually, however, the cleaning takes place in the workshop. In the process, the feeding shall often be integrated in the production process and the cleaning be part of the assembly line, for example, which puts increased demands on the plant engineering with regard to size and throughput capacity.

Such plants are often exactly adjusted to the requirements with respect to the products to be cleaned, contaminations and feeding procedures (special plants). What is still standard, however, are central cleaning devices which are then also often manufactured as multi-task plants, that is they can meet different cleaning requirements. A simple typical example are washbasins or simple automatic cleaning units which can be found in many workshops.

Apart from aqueous cleaning up under temperature effects, the cleaning of components is assisted using additional mechanical methods and coordinated combinations of these methods,
namely:

  • Spraying
  • Squirting
  • Blasting
  • Flooding
  • Steam degreasing
  • Bath circulation
  • Injecting gas
  • Injection flooding
  • Pressure flooding and ultrasonic-assisted

Technologies

radial pumps

Cleaning with solvents as cleaning media.
Here, too, a further condition when choosing a cleaner is then the question of whether it must be cleaned on site which may be the case during repair and maintenance.

Usually, however, the cleaning takes place in the workshop. In the process, the feeding shall often be integrated in the production process and the cleaning be part of the assembly line, for example, which puts increased demands on the plant engineering with regard to size and throughput capacity.

Such plants are often exactly adjusted to the requirements with respect to the products to be cleaned, contaminations and feeding procedures (special plants). What is still standard, however, are central cleaning devices which are then also often manufactured as multi-task plants, that is they can meet different cleaning requirements. A simple typical example are washbasins or simple automatic cleaning units which can be found in many workshops.

Apart from cleaning up the components in organic solvents under temperature effects, the cleaning of components is here also assisted using additional mechanical methods and coordinated combinations of these methods,
namely:

  • Spraying
  • Squirting
  • Blasting
  • Flooding
  • Steam degreasing
  • Bath circulation
  • Injecting gas
  • Injection flooding
  • Pressure flooding and ultrasonic-assisted

Technologies

radial pumps

What is particularly addressed here is the profile of requirements for cleaning components and the procedure(s) used as well as the level of pollution and the chemicals / cleaners used.

Technologies

radial pumps

Sealing variants which are used here include:

  • Single-acting mechanical seal
  • Double-acting mechanical seal (quenching system)
  • Double-acting mechanical seal (pressurisation system)
  • Rinsing the mechanical ring seal from behind
  • Magnetic coupling
  • Sealing by orifice

Technologies

radial pumps

In the process, the hydraulics of the pump are adjusted to the product to be cleaned and to the medium to be cleaned up such as volume flow and system pressures.

Types of hydraulics and housings as well as impellers used while doing so.

Designs:

  • Single-stage centrifugal pumps
  • Multi-stage centrifugal pumps
  • Submersible pumps
  • Spiral housing pumps
  • Impeller-type peripheral pumps
  • Diaphragm pump

Impellers:

  • Closed impeller
  • Open impeller
  • Half-open impeller
  • Channel-type impeller
  • Non-clog impeller
  • Impeller-type peripheral pump
  • Diaphragm

Technologies

radial pumps

  • Klaus-Peter Müller: Praktische Oberflächentechnik. Auflage 2003. XII, vieweg, Braunschweig/Wiesbaden, ISBN 978-3-528-36562-2.
  • Thomas W. Jelinek: Reinigen und Entfetten in der Metallindustrie. 1. Auflage, Leuze Verlag, Saulgau 1999, ISBN 3-87480-155-1.
  • Brigitte Haase: Wie sauber muß eine Oberfläche sein? In: Journal Oberflächentechnik. Nr. 4, 1997.
  • Brigitte Haase: Reinigen oder Vorbehandeln? Oberflächenzustand und Nitrierergebnis, Bauteilreinigung, Prozesskontrolle und -analytik. Hochschule Bremerhaven.
  • Bernd Künne: Online Fachbuch für industrielle Reinigung. In: bauteilreinigung.de. Universität Dortmund, Fachgebiet Maschinenelemente
  • Reiner Grün: Reinigen und Vorbehandeln – Stand und Perspektiven. In: Galvanotechnik. 90, Nr. 7, 1999, S. 1836–1844.
  • Günter Kreisel et al.: Ganzheitliche Bilanzierung/Bewertung von Reinigungs-/Vorbehandlungstechnologien in der Oberflächenbehandlung. Jena 1998, Institut für Technische Chemie der FSU.
  • Martin Bilz, Mark Krieg, Fraunhofer Institut für Produktionsanlagen und Konstruktionstechnik: Methodisches Handeln in der Reinigungstechnik – Sauberkeit effizient planen. In JOT Industrielle Teilereinigung, Vieweg+Teubner Verlag / GWV Fachverlage GmbH Wiesbaden, 1/2009, S. 7–9

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