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公开(公告)号：EP1190192B1
公开(公告)日：2003-08-27
申请号：EP00943953.0
申请日：2000-06-30
申请人： Alfa Laval LKM A/S
IPC分类号： F16K1/44
摘要： Double sealed valve comprising: a valve seat in a communicating passage (3) formed between an upper passage (1) and a lower passage (2); a first vertical valve stem and a second vertical valve stem, which is hollow, slidably surrounding that first valve stem; said first stem having a first valve plug (7); said second stem having a second valve plug (9) and a valve drive mechanism connected to said stems, between the first vertical valve stem (8) and the second valve stem (10) a passage (22) for cleaning fluid is defined, being sealed towards the valve drive mechanism and having an outlet opening towards an annular space between the first and second valve plug being wherein the outlet opening of the passage is formed by a spray disc (23) having jet openings (54) with an outlet direction causing a spiral flow in the annular space for cleaning the annular space (24).
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公开(公告)号：EP1190192A1
公开(公告)日：2002-03-27
申请号：EP00943953.0
申请日：2000-06-30
申请人： Alfa Laval LKM A/S
IPC分类号： F16K1/44
摘要： Double sealed valve comprising: a valve seat in a communicating passage (3) formed between an upper passage (1) and a lower passage (2); a first vertical valve stem and a second vertical valve stem, which is hollow, slidably surrounding that first valve stem; said first stem having a first valve plug (7); said second stem having a second valve plug (9) and a valve drive mechanism connected to said stems, between the first vertical valve stem (8) and the second valve stem (10) a passage (22) for cleaning fluid is defined, being sealed towards the valve drive mechanism and having an outlet opening towards an annular space between the first and second valve plug being wherein the outlet opening of the passage is formed by a spray disc (23) having jet openings (54) with an outlet direction causing a spiral flow in the annular space for cleaning the annular space (24).
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公开(公告)号：EP0983455A1
公开(公告)日：2000-03-08
申请号：EP98928288.4
申请日：1998-05-18
申请人： Alfa Laval LKM A/S
发明人： BORG, S ren , HOLMGAARD, Poul
IPC分类号： F16K1/44
CPC分类号： F16K1/446 , Y10T137/4259 , Y10T137/5762 , Y10T137/88038
摘要： The invention relates to a dual-seat valve able to switch in a leak-free manner. To this end, the invention provides for the valve seat and the closing member each to have a cylindrical surface, which together form a throttle gap. During the cleaning stroke of the closing member, pressure peaks in the leakage chamber are avoided. Furthermore, when the seat is cleaned the cleaning agent flow is comparatively insensitive to tolerances in the cleaning stroke.
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公开(公告)号：EP1230066B1
公开(公告)日：2003-12-17
申请号：EP00969322.7
申请日：2000-09-28
申请人： Alfa Laval LKM A/S
CPC分类号： B25B27/0028 , B23P19/084 , Y10T29/49297 , Y10T29/4987 , Y10T29/49872 , Y10T29/53657 , Y10T29/5383
摘要： The invention relates to an assembly tool for assembling a sealing ring (3) in a ring groove (4, 9) of a machine component (1, 7), especially a valve disc (7). The aim of the invention is to produce the assembly tool in a simple and cost-effective manner. The assembly tool (10, 23) comprises a pneumatic piston-cylinder unit (11, 12, 26, 27) for evenly pressing the sealing ring (3) into the ring groove (4, 9). The inventive assembly tool is versatile, can be used in a mobile manner and enables to reliably assemble sealing components in such a way that nobody is injured.
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公开(公告)号：EP1030988B1
公开(公告)日：2002-01-23
申请号：EP98961138.9
申请日：1998-11-05
申请人： Alfa Laval LKM A/S
发明人： BORG, Sören
IPC分类号： F16K1/44
CPC分类号： F16K1/446 , Y10T137/5762 , Y10T137/88038
摘要： The invention relates to a double seat valve with leak protection. A common drive mechanism is provided for operating both valve discs (6, 7). Said drive mechanism contains a cylinder (17) with a first working piston (18) which is subjected to the action of pressure springs (29, 22) at both ends and which is rigidly connected to the valve stem of the lower valve disc (7). Said valve stem (13) passes through the upper valve disc (6) and its tubular stem (14) telescopically and the top end of the shaft projects into the cylinder (17) where it supports an abutment (28) for the lower pressure spring (29) which pushes the upper valve disc (6) into its seat (8). A second working piston (36) which moves on and acts upon the tubular shaft is located in the cylinder (17) below the first working piston (18) and a third working piston (30) which acts on the lower valve disc is located above the first working piston. The invention provides that the first spring (22) is positioned so that it rests on the third piston (30). As a result, the drive mechanism consumes less air and the valve switches more rapidly.
摘要翻译： 本发明涉及一种具有泄漏保护的双座阀。 提供共同的驱动机构来操作两个阀盘（6,7）。 所述驱动机构包括具有第一工作活塞（18）的缸体（17），所述第一工作活塞在两端受到压力弹簧（29,22）的作用并且刚性地连接到下部阀盘（7）的阀杆 ）。 所述阀杆（13）可伸缩地穿过上部阀盘（6）及其管状杆（14），并且轴的顶端伸入缸体（17）中，在该处其支撑用于下部压力弹簧 （29），其将上部阀盘（6）推入其阀座（8）中。 在所述管状轴上移动并作用于所述管状轴的第二工作活塞（36）位于所述第一工作活塞（18）下方的所述缸体（17）中，并且作用于所述下部阀盘上的第三工作活塞（30）位于所述第一工作活塞 第一个工作活塞。 本发明规定，第一弹簧（22）定位成使得其搁置在第三活塞（30）上。 结果，驱动机构消耗的空气更少，阀门开关更快。
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公开(公告)号：EP2005005A1
公开(公告)日：2008-12-24
申请号：EP07723615.6
申请日：2007-03-27
申请人： Alfa Laval LKM A/S
摘要： In order to specify a centrifugal pump (1) having a centrifugal pump outlet space (6) and a centrifugal pump suction space (4) and also having an additional ventilation pump (3), which is preferably embodied as a vacuum pump, with a ventilation pump inlet (14) and a ventilation pump outlet (15), which centrifugal pump (1) is of particularly simple construction and which, if required, can be automatically ventilated without complex mechanical switching processes, it is proposed that both the ventilation pump inlet (14) and also the ventilation pump outlet (15) are in each case connected by means of a connecting line (16, 17) to the centrifugal pump outlet space (6) so as to form an auxiliary line.
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公开(公告)号：EP1627167B1
公开(公告)日：2008-01-02
申请号：EP04728565.5
申请日：2004-04-21
申请人： Alfa Laval LKM A/S
发明人： LASSE, Korf, Madsen
IPC分类号： F16K1/226
CPC分类号： F16K27/0218 , F16K1/2265
摘要： Disclosed is a butterfly valve comprising an annular, elastic sealing element (4) that encloses an axial opening, a valve disk (6) which is disposed inside the axial opening so as to be rotatable transversal to the axial direction, means for rotating the valve disk (6) between closed and open positions in order to control a fluid flow through the opening, at least two valve housing parts (5) that enclose the sealing element (4) in an annular manner and embrace two flanges (3) which are connected to an inlet and an outlet. Conical contact areas of said flanges (3) and/or the valve housing parts (5) cooperate in such a way that the flanges (3) are axially pressed in a sealing fashion against the sealing element by means of the valve housing parts (5) in the operationally mounted state. In order to improve said butterfly valve regarding negative effects of the axial forces acting upon the sealing element (4), the flanges are respectively connected in a rigid and positive manner to a couple of clamps (5).
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公开(公告)号：EP1190192B2
公开(公告)日：2007-09-12
申请号：EP00943953.0
申请日：2000-06-30
申请人： Alfa Laval LKM A/S
IPC分类号： F16K1/44
摘要： Double sealed valve comprising: a valve seat in a communicating passage (3) formed between an upper passage (1) and a lower passage (2); a first vertical valve stem and a second vertical valve stem, which is hollow, slidably surrounding that first valve stem; said first stem having a first valve plug (7); said second stem having a second valve plug (9) and a valve drive mechanism connected to said stems, between the first vertical valve stem (8) and the second valve stem (10) a passage (22) for cleaning fluid is defined, being sealed towards the valve drive mechanism and having an outlet opening towards an annular space between the first and second valve plug being wherein the outlet opening of the passage is formed by a spray disc (23) having jet openings (54) with an outlet direction causing a spiral flow in the annular space for cleaning the annular space (24).
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公开(公告)号：EP1627167A1
公开(公告)日：2006-02-22
申请号：EP04728565.5
申请日：2004-04-21
申请人： Alfa Laval LKM A/S
发明人： LASSE, Korf, Madsen
IPC分类号： F16K1/226
CPC分类号： F16K27/0218 , F16K1/2265
摘要： Disclosed is a butterfly valve comprising an annular, elastic sealing element (4) that encloses an axial opening, a valve disk (6) which is disposed inside the axial opening so as to be rotatable transversal to the axial direction, means for rotating the valve disk (6) between closed and open positions in order to control a fluid flow through the opening, at least two valve housing parts (5) that enclose the sealing element (4) in an annular manner and embrace two flanges (3) which are connected to an inlet and an outlet. Conical contact areas of said flanges (3) and/or the valve housing parts (5) cooperate in such a way that the flanges (3) are axially pressed in a sealing fashion against the sealing element by means of the valve housing parts (5) in the operationally mounted state. In order to improve said butterfly valve regarding negative effects of the axial forces acting upon the sealing element (4), the flanges are respectively connected in a rigid and positive manner to a couple of clamps (5).
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公开(公告)号：EP1062049A1
公开(公告)日：2000-12-27
申请号：EP99910236.1
申请日：1999-02-18
申请人： Alfa Laval LKM A/S
CPC分类号： B05B3/0445 , B08B9/0936
摘要： The invention relates to a tank-cleaning device, comprising a housing (1) which can be introduced into an opening of a tank. Said housing (1) has a rotationally fixed housing part (2) which is connected to a supply line for the cleaning liquid, and a nozzle holder (4) which rotates about a first axis of rotation (5) in relation to the rotationally fixed housing part (2). The device also has at least one nozzle arrangement (6) which is arranged on the nozzle holder (4) in such a way that it can rotate about a second axis of rotation (7) and which has four nozzles (8, 9, 10, 11). The device has a simple construction and is able to clean tanks with narrow openings thoroughly. To this end, the nozzles (8, 9; 10, 11) of the nozzle arrangement (6) can be arranged e.g., in pairs at an acute angle (12) to each other, so as to form a V-shape (13, 14), with the two Vs (13, 14) pointing in essentially opposite directions (15).
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