Abstract

Valve device for controlled passage of a medium, in particular in the high-pressure range, which is provided with a housing having a bore, at least one inlet opening and an outlet opening; a pressure chamber formed in the bore and acted upon by the medium; and a valve needle movable to and fro therein and has a conical tip. A guide means for the valve needle, by means of which the valve needle with its circumferential region is guided directly at the conical tip almost without play and concentrically with respect to the valve seat until it is almost in the closed position, is located in a valve seat in a valve seat block. This guide means has passage openings for passage of medium from the pressure chamber into the outlet opening. Very precise guiding of the valve needle is thus achieved at the front at the tip thereof.

IPC Classes  ?

• F16K 25/04 - Arrangements for preventing erosion, not otherwise provided for
• B26F 3/00 - Severing by means other than cuttingApparatus therefor
• F16K 1/38 - Valve members of conical shape
• F16K 1/42 - Valve seats
• F16K 27/02 - Construction of housingsUse of materials therefor of lift valves

Abstract

The invention relates to a valve device for controlled passage of a medium, in particular in the high-pressure range, which is provided with: a housing (15) having a bore (11) and at least one inlet opening (12) and an outlet opening (13); a pressure chamber (14) which is formed in the bore (11) and can be acted upon by the medium; and a valve needle (16) which is movable to and fro therein and has a conical tip (16′). A guide means (20) for the valve needle (16), by means of which the valve needle (16) with its circumferential region (16″) is guided directly at the conical tip (16′) almost without play and concentrically with respect to the valve seat (17) until it is almost in the closed position, is located in a valve seat (17) in a valve seat block (18). This guide means (20) has passage openings (24) for the passage of the medium from the pressure chamber (14) into the outlet opening (13). Very precise guiding of the valve needle is thus achieved at the front at the tip thereof, so that the service life of the valve device can be increased.

IPC Classes  ?

• F16K 25/04 - Arrangements for preventing erosion, not otherwise provided for
• F16K 1/38 - Valve members of conical shape
• F16K 1/42 - Valve seats
• F16K 27/02 - Construction of housingsUse of materials therefor of lift valves

Abstract

The invention relates to a valve device for controlled passage of a medium, in particular in the high-pressure range, which is provided with: a housing (15) having a bore (11) and at least one inlet opening (12) and an outlet opening (13); a pressure chamber (14) which is formed in the bore (11) and can be acted upon by the medium; and a valve needle (16) which is movable to and fro therein and has a conical tip (16'). A guide means (20) for the valve needle (16), by means of which the valve needle (16) with its circumferential region (16") is guided directly at the conical tip (16') almost without play and concentrically with respect to the valve seat (17) until it is almost in the closed position, is located in a valve seat (17) in a valve seat block (18). This guide means (20) has passage openings (24) for the passage of the medium from the pressure chamber (14) into the outlet opening (13). Very precise guiding of the valve needle is thus achieved at the front at the tip thereof, so that the service life of the valve device can be increased.

IPC Classes  ?

• F16K 1/38 - Valve members of conical shape
• F16K 1/42 - Valve seats
• F16K 27/02 - Construction of housingsUse of materials therefor of lift valves

Abstract

Sealing system of a device for allowing the passage of a medium, in particular in the high pressure range, is provided with a housing that has a bore hole, a component mounted within the housing such as to oscillate and/or rotate and with a pressure chamber formed within the bore hole. A sealing element surrounding the component adjoins this pressure chamber which can be charged with the medium. An additional metal seal is formed here by the housing and a pressure disc surrounding the component. The outer region is thus tightly closed after the sealing element. In this way, the sealing element is completely tightly encapsulated on the outside.

IPC Classes  ?

• F16K 41/06 - Spindle sealings with stuffing-box with at least one ring attached to both spindle and housing
• F16K 11/02 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit
• F16K 41/04 - Spindle sealings with stuffing-box with at least one ring of rubber or like material between spindle and housing
• F16J 15/18 - Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings