Pilot control valve
AssigneeDBT Automation GmbH
InventorsFranz-Heinrich Suilmann, Sebastian M. Mundry, Patrick Hantke, Torsten Boldt
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AssigneeDBT Automation GmbH
InventorsFranz-Heinrich Suilmann, Sebastian M. Mundry, Patrick Hantke, Torsten Boldt
Estimating the term…
A pilot control valve for mining hydraulics. The valve has an insert constructed as a valve cartridge, whose single or multipart valve housing has an input entry for pressure fluid, a connection opening for a load connection, an output opening, opening into the return flow and an axial boring to accept a valve closing body provided with a closing surface, liftable from a valve sealing seat arranged between the entry opening and the connection opening by an electromagnetic or piezoelectric switching device fastenable onto the valve housing. A singe part valve closing body is provided, having a collar shaped sealing surface and the moving part of the closing mechanism in the form of a shaft section, whereby the shaft section enters into a boring section of the axial boring during the lifting movement, closing a radial opening.
A pilot control valve especially for use in mining hydraulics with a valve insert configured as a valve cartridge which can be arranged in the valve accepting boring of a valve block forming a multi-way valve whose valve housing has an inlet for pressure fluid, a connecting opening for a load, an outlet opening into a return feed and an axial boring for the acceptance of a valve closing body provided with a sealing surface, which can be lifted by means of a switching device fixed to the valve housing, against the return force of a spring from a valve sealing seat arranged between the inlet opening and the connecting opening, whereby with the lifting movement of the valve closing body from the valve sealing seat an at least two part closing mechanism arranged between the connecting opening and the outlet opening is coupled for their separation wherein a single part valve closing body has the closing surface and the moving part of the closing mechanism, whereby the moving part comprises a shaft section of the valve closing body which plunges with the lifting movement into a boring section of the axial boring, closing a radial opening.
Dependencies are inferred from the claim text.