2C Switching Block 2009 HB with Backpropagation
1. Introduction
The APSON 2C Switching Block 2009 HB with Backpropagation
belongs to the class of special switching blocks for
2-components lacquers with hardener. Due to its characteristics
it improves the quality and increases the efficiency of the coating
process.
This type of switching block is particularly suitable to the
employment in automatic coating systems with often to change
chemically aggressive media, e.g. lacquers, hardeners, solvents,
caustic solutions, a.o. It is applicable both
for 2C normal lacquers and 2C metalic lacquers.
Conventional medium switching blocks for 2-components
lacquers are not optimized and have usually channels for supplying
the lacquer components and at least one channel for exhaust of the
lacquer product. In practice the lacquer product in these channels
can harden. This leads to problems during painting and when rinsing
the media switching blocks. Clogged medium switching blocks must
be exchanged at expensive timely costs and the medium channels
must again be drilled out.
The APSON 2C Switching Block 2009 HB with Backpropagation
is equipped with high-quality death-space-free APSON valve
technology and has a mixing space with minimum volume
within which the master lacquer mixes with the hardener.
This mixing area is optically examinable and fastly cleanable.
Hardenings of the lacquer product cannot develop
during the normal operation. If a hardening should occur
somehow, the ready status of the APSON 2C Switching Blocks
is restorable in shortest time.
2. Structure
The APSON 2C Switching Block 2009 HB with
Backpropagation consists mainly of:
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A solid valve block with connection- and valve-designations.
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Five APSON valves (see Ordering Data).
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Tube connectors for the connection of the media.
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Output cone with output terminal, backpropagation connection and union nut.
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Optionally two checkvalves (for pulsation air and solvent).
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An attaching bracket.
Legenda = SL screw nut, b = SL screw connection,c = Checkvalve, d = Checkvalve,e = APSON Valve, f = Pneumatics connection,g = 2C switching block, h = Union nut,i = Output cone, j = 2C-lacquer outlet,k = Feedback, l = Attaching bracket,m = 2 Holes ø7 mm (horiz. hole spacing 20 mm)
The APSON 2C Switching Block 2009 HB with Backpropagation
is made of inoxidable steel and is to be fastened
by means of the attaching bracket to a suitable place.
The media hoses are attached by means of the tube connectors
at the respective marked media connections for master lacquer (SL),
hardener (H), diluant resp. solvent (V/Lo),
pulsation air (PL) and feedback (RF).
The union nut at the output cone makes possible fast
disassembly for purpose of maintenance resp. inspection.
3. Function
The 2C-lacquer product necessary for painting results in the
mixing space of the 2C switching block from simultaneous open valves
for master lacquer and hardener. The 2C-lacquer product then flows
through the outlet A of the 2C switching block and through a
Mixer/Homogeniser which can be connected at the outlet.
LegendChannel lengths: Lv = Lw = Lx = Ly = 0.2 mm; Lz = 1.0 mmChannel volumes: Vv + Vw + Vx + Vy = 0.2 ml; Vz = 0.01 ml
For changing the lacquer, the master lacquer in the lacquer hose
can be pushed out through the exit (RF) by opening the feedback
valve, and so to be gained back for re-use. Subsequently the
lacquer hose for the master lacquer is to be rinsed, as well as the
2C switching block.
For rinsing the 2C switching block, the valves for master
lacquer (SL) and hardener (H) are to be closed. Subsequently, the
valves for the solvent (V/Lo) and for the pulsation air (PL)
are to be opened and
closed periodically and alternating. Thus an air/solvent
sequence results as follows: air-solvent-air-solvent...
4. Features
The APSON 2C Switching
Block 2009 HB with Backpropagation has the following
capability caracteristics:
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Produces high-quality medium mixture by turbulent pre-mixing of the media already when meeting the media in the mixing space.
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Does not form air columns because the mixing space has no media channels.
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Reaches 100% utilization of material (no hardened medium columns in channels).
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Is environmentaly careful due to media recuperation and short rinsing times.
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Is cost-saving due to minimized media consumption.
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Makes possible simple handling when assembling and maintenance.
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Has death-space-free APSON valve technology.
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Has rinsing- and throughput-optimized media channels.
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Consists of inoxidable steel, thus corrosion resistant and wear resistant.
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Is insensitive to caustic solutions and weak acids.
5. Technical Data
| Denomination: | APSON 2C Switching Block 2009 HB with Backpropagation |
| Media: | Normal and metalic lacquers, hardeners, solvents, caustic solutions, a.o. |
| Media pressure: | Max. 20 bar |
| Valve assembly: | APSON 2/2-Ways Valves 2009, death-space-free valve technology |
| Material: | Inoxidable steel |
| Seals: | Viton™, or in accordance with customer's request |
| Media entrances: | For hose D = 8 mm, d = 6 mm (or in accordance with customer's request) |
| Output terminal: | For hose D = 8 mm, d = 6 mm (or in accordance with customer's request) |
| Dimensions: |
Without valves:
Length and/or Width 70 mm,
Height 45 mm
With valves:
Length and/or Width 140 mm,
Height 120 mm
|
| Mass: | 1.3 kg (with valves) |
6. Ordering Data
| Denomination | Quantity | Part-Nr. |
| APSON 2C Switching Block 2009 HB with Backpropagation (with valves, attaching brackets and SL screw connections) | 1 | 050-A046 |
| APSON 2/2-Ways Valve 2009 (sparepart) | 5 | 060-A013 |
| APSON Mixer/Homogeniser | 1 | 200-0270 |
| APSON Gasket Kit (sparepart) | 1 | 300-0021 |
| APSON Checkvalve for the connection of pulsation air and/or solvent (option) | 2 | 100-A004 |
Options:
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Other materials or capability characteristics on customer's request against surcharge.
APSON Lackiertechnik GmbH, Am Wiesengrund 15, D-63075 Offenbach
Mobile: +49-171-373-16-33 Phone: +49-69-82-369-447 Fax: +49-69-82-369-448
www.apson.de email@apson.de
Changes without notice reserved.
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