公开(公告)号：US10519988B2

公开(公告)日：2019-12-31

申请号：US14912947

申请日：2014-08-14

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Gerd Schneider ,  Markus Bill

IPC: F15B13/04 ,  F16K37/00

Abstract: A pressure retaining valve (1) has a main control piston (39) guided longitudinally displaceably in a single-piece or multiple-piece valve housing (29) and a non-return piston (43). In a pressure retaining position, a fluid-conducting connection between connection points (37a, 37b, 21) is shut off by the two pistons (39, 43). Connection point (37a) serves to feed media. Connection point (37b) discharges media. Connection point (21) leads to a hydraulic consumer. In a load-raising position, the two pistons (43) move relative to one another into a release position, in which the connection between the medium feed (37a) and the consumer is established. In a load-reducing position, the two pistons (39, 43) assume a spacing from one another such that the connection between the medium discharge (37b) and the consumer is established. A monitoring device (75) determines the individual switching positions of the pistons (39, 43) to ensure reliable functioning of the pressure retaining valve (1).

公开(公告)号：US09915276B2

公开(公告)日：2018-03-13

申请号：US13784934

申请日：2013-03-05

Applicant: Hydac Fluidtechnik GmbH

Inventor： Peter Bruck ,  Philipp Hilzendegen ,  Gerd Schneider

IPC: F15B13/043 ,  F15B13/04 ,  G05D16/20 ,  F16K17/10 ,  F16K31/42 ,  F16K31/06 ,  F16K27/04 ,  F16H61/02

CPC classification number: F15B13/0401 ,  F15B13/0433 ,  F15B13/0435 ,  F16H2061/0258 ,  F16K17/10 ,  F16K27/048 ,  F16K31/0613 ,  F16K31/426 ,  G05D16/2093 ,  Y10T137/86582 ,  Y10T137/86614

Abstract: A valve, in particular a pilot-operated proportional pressure control valve, has a valve housing (5) with a pressure supply port (7), a working port (9), and a drain port (11). In the valve housing (5), a main valve piston (15) can be moved by a pilot stage (13) for control of the fluid flow between the pressure supply port (7) and the working port (9). The pilot stage (13) has a valve closing element (43) for a pilot chamber (41). The valve closing element (43) is movable from an open position (OS) into a closed position (SS) by an actuating apparatus (45). The valve closing element (43) can actuate a leakage reduction stage (53).

公开(公告)号：US09810337B2

公开(公告)日：2017-11-07

申请号：US14913400

申请日：2014-08-12

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Gerd Schneider ,  Peter Bruck

IPC: F16K11/07 ,  F16K27/02 ,  F16K31/06

CPC classification number: F16K27/029 ,  F16K31/0613 ,  Y10T137/8671

Abstract: A control device selectively fluidically connects and disconnects fluid connection points (A, P, T) by a valve (5), which controls fluid-conducting connection channels (55, 57, 59) extending between the connection points (A, P, T). The connection channels are arranged in a control block (3), into which the valve (5) is at least partially inserted. Proceeding from the respective fluid connection points (A, P, T), the connection channels (55, 59, 57) connected to the fluid connection points extend in parallel to each other until the connection channels lead into a respective control chamber (49; 53, 51). The valve (5) is retained in a receptacle (39) separating two adjacently arranged control chambers (49, 51) from each other.

公开(公告)号：US10584801B2

公开(公告)日：2020-03-10

申请号：US15571065

申请日：2016-01-15

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Peter Bruck ,  Gerd Schneider

IPC: F16B13/04 ,  F16K11/07 ,  F16K31/06 ,  F15B13/044 ,  F15B13/00 ,  F15B13/04

Abstract: A proportional pressure regulating valve has a spring-loaded valve piston (10) guided in and actuated by an actuating magnet (14) within a valve housing (12). Opposite valve piston sides are exposed to tank pressure. The valve piston (10) has a regulation surface (44) connectable to working port (A) for a regulation pressure (PR). A ring-shaped chamber (42) in the valve housing (10) opens into the working port (A). At the transition between the ring-shaped chamber (42) and the working port (A), the regulation surface (44) is active. When the actuating magnet (14) is deenergized, a maximum regulation pressure (PR) is generated.

公开(公告)号：US20130255809A1

公开(公告)日：2013-10-03

申请号：US13784934

申请日：2013-03-05

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Peter Bruck ,  Philipp Hilzendegen ,  Gerd Schneider

IPC: F15B13/04

CPC classification number: F15B13/0401 ,  F15B13/0433 ,  F15B13/0435 ,  F16H2061/0258 ,  F16K17/10 ,  F16K27/048 ,  F16K31/0613 ,  F16K31/426 ,  G05D16/2093 ,  Y10T137/86582 ,  Y10T137/86614

Abstract: A valve, in particular a pilot-operated proportional pressure control valve, with a valve housing (5) which has a pressure supply port (7), a working port (9), and a drain port (11), in the valve housing (5) there being a main valve piston (15) which can be moved by a pilot stage (13) for control of the fluid flow between the pressure supply port (7) and the working port (9), with the pilot stage (13) having a valve closing element (43) for a pilot chamber (41), with the valve closing element (43) being movable from an open position (OS) into a closed position (SS) by an actuating apparatus (45), is characterized in that the valve closing element (43) can actuate a leakage reduction stage (53).

Abstract translation: 具有阀壳体（5）的阀门，特别是先导操作的比例压力控制阀，阀壳体（5）具有压力供应口（7），工作端口（9）和排出口（11） （5）具有主阀活塞（15），其可由先导级（13）移动，用于控制压力供给口（7）和工作端口（9）之间的流体流动与先导级（ 13）具有用于先导室（41）的阀关闭元件（43），阀关闭元件（43）可通过致动装置（45）从打开位置（OS）移动到关闭位置（SS） 其特征在于，所述阀关闭元件（43）能够致动泄漏减小级（53）。