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Piston pumps

Description

The pneumatically driven Krautzberger piston pump sucks the coating substance from the material container through a suction hose or a suction pipe and subjects it to pressure. When it leaves the spray gun, the medium is atomised through a special nozzle by the high pressure. The hydraulic piston is a differential piston and moves up and down in the working cylinder of the hydraulic section.

During the upward stroke, the ball of the suction valve and the coating medium is sucked into the lower chamber of the working cylinder. At the same time, the ball of the pressure valve in the piston is pressed onto its seat and the medium displaced from the upper ring chamber of the working cylinder into the pressure line. During the downward stroke, the ball of the suction valve is pressed onto its seat and the ball of the pressure valve moves upward. The piston displaces half of the medium from the lower chamber of the working cylinder into the upper chamber and the other half into the pressure line. The piston rod of the air piston motor is connected to the pump piston and transmits the motion in a linear fashion. The piston motion is generated by the alternating feed of compressed air to the air motor piston and controlled by a four-way air valve.

As long as compressed air is fed into the control section via the pressure reducing valve, the thrust piston motor continues to operate until the pump has built up a sufficient hydraulic pressure in the pressure line to counterbalance the thrust of the incoming compressed air. The pump then remains in quiescent position until the hydraulic pressure begins to fall as a result, for example, of operation of the spray gun. The pump then continues to pump and maintains the dynamic equilibrium between air pressure and hydraulic pressure. The selected nozzle size and the set spraying pressure determine the stroke rate (strokes per minute) and the air consumption and thus also the spraying capacity of the pump. All pump components in contact with the medium are made of high-grade stainless steel.

Photos/documents

Title Document type Languages
High-pressure pump 30-10 User manual
Languages Format Size
PDF 970.74 KB Download
PDF 1.17 MB Download
Piston pump 1-115 User manual
Languages Format Size
PDF 1.24 MB Download
Piston pump 11-115 User manual
Languages Format Size
PDF 1.25 MB Download
PDF 1.15 MB Download
Piston pump 22-115 User manual
Languages Format Size
PDF 1.29 MB Download
PDF 788.39 KB Download
Piston pump 30-20 User manual
Languages Format Size
PDF 2.54 MB Download
PDF 511.93 KB Download
Piston pump 4-50 User manual
Languages Format Size
PDF 844.1 KB Download
PDF 1.02 MB Download
Piston pump 5-115 User manual
Languages Format Size
PDF 692.07 KB Download
PDF 1.57 MB Download
Piston pump 60-20 User manual
Languages Format Size
PDF 608.7 KB Download
PDF 675.93 KB Download
Piston pump 9-20 User manual
Languages Format Size
PDF 1.39 MB Download
PDF 1.35 MB Download

Versions

30-10 9-20 30-20 60-20
Typ 30-10 9-20 30-20 60-20
Einsatzbereich
theoret. Übersetzungsverhältnisse 30:1 9:1 30:1 60:1
Fördervolumen pro Doppelhub 20 cm³ 40 cm³ 40 cm³ 40 cm³
max. empf. Doppelhübe pro min. 50 50 50 50
max. Lufteingangsdruck 8 bar 8 bar 8 bar 8 bar
Max. operating pressure 240 bar 72 bar 240 bar 480 bar
max. empf. Spritzleistung 1 l/min 2 l/min 2 l/min 2 l/min
max. Förderleistung 2 l/min 4 l/min 4 l/min 4 l/min
4-50 15-50 30-50 Beize-Anl.
Typ 4-50 15-50 30-50
Einsatzbereich
theoret. Übersetzungsverhältnisse 4:1 15:1 30:1 4:1
Fördervolumen pro Doppelhub 100 cm³ 100 cm³ 100 cm³ 100 cm³
max. empf. Doppelhübe pro min. 50 50 50 50
max. Lufteingangsdruck 8 bar 8 bar 8 bar 8 bar
Max. operating pressure 32 bar 120 bar 240 bar 32 bar
max. empf. Spritzleistung 5 l/min 5 l/min 5 l/min 5 l/min
max. Förderleistung 10 l/min 10 l/min 10 l/min 10 l/min
1-115 5-115 11-115 22-115
Typ 1-115 5-115 11-115 22-115
Einsatzbereich
theoret. Übersetzungsverhältnisse 1.5:1 5:1 11:1 22:1
Fördervolumen pro Doppelhub 230 cm³ 230 cm³ 230 cm³ 230 cm³
max. empf. Doppelhübe pro min. 50 50 50 50
max. Lufteingangsdruck 6 bar 6 bar 6 bar 6 bar
Max. operating pressure 9 bar 30 bar 66 bar 132 bar
max. empf. Spritzleistung 11.5 l/min 11.5 l/min 11.5 l/min 11.5 l/min
max. Förderleistung 23 l/min 23 l/min 23 l/min 23 l/min

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