公开(公告)号：EP0898652A4

公开(公告)日：2001-03-14

申请号：EP97924562

申请日：1997-05-01

申请人： WILDEN PUMP & ENG

发明人： KENNEDY DENNIS EARL ,  PASCUAL WILFRED DAVID

IPC分类号： F16K17/06 ,  F04B43/06 ,  F04B43/073 ,  F01L25/06 ,  F16K15/02 ,  F16K15/18

CPC分类号： F04B43/0736 ,  Y10S137/903

摘要： An air driven diaphragm pump having two opposed pumping cavities (26). A center section assembly (104) between the pumping cavities includes a cylinder (108) and a power amplifier piston (124). The power amplifier piston as well as the diaphragms (88) are coupled with a common control shaft (116). A valve assembly (138, 144) is arranged with a manifold (162) to receive pressurized air and distribute that air in alternating fashion to the sides of the power amplifier piston as well as to each of the diaphragms. By directing pressure to a side of the power amplifier piston facing the same direction as the diaphragm receiving pressure, an amplified pressure on a pump chamber is experienced. With the power amplifier piston being approximately twice as large as the diaphragm assembly an amplification of three times the pressure on the pump chamber is experienced. Both pump chambers are able to operate to pump material.

摘要翻译： 具有两个相对的泵送腔的气动隔膜泵。 泵送腔之间的中心部分组件包括气缸和功率放大器活塞。 功率放大器活塞以及隔膜与公共控制轴相连。 阀组件布置有歧管以接收加压空气并且将空气以交替的方式分配到功率放大器活塞的侧面以及每个隔膜。 通过将压力引导到与隔膜接收压力相同的方向的功率放大器活塞的一侧，经历泵室上的放大的压力。 功率放大器活塞的大约是隔膜组件的两倍，经历了泵室压力三倍的放大。 两个泵室都能操作来泵送材料。 安全阀包括致动器和阀元件，其通过压缩弹簧配合并停止以提供用于阀致动的力分布和用于正致动的能量。 压缩弹簧和复位弹簧都配置为通过大量循环使其寿命长。 公开了弹性材料块。

公开(公告)号：EP0890016A4

公开(公告)日：2000-09-27

申请号：EP97908979

申请日：1997-03-10

申请人： WILDEN PUMP & ENG

发明人： PASCUAL WILFRED DAVID ,  FORMAN ERIC L

IPC分类号： F04B45/04 ,  F04B43/00 ,  F01B19/00

CPC分类号： F04B43/0054

摘要： A flexible diaphragm (20) for an air driven diaphragm pump having a circular configuration with an inner attachment portion (22), an outer attachment portion (48) and an annular flexure portion (40) bounded by transition portions to the inner and outer attachment portions. The annular flexure portion is configured with a constant radius of curvature concave on the air chamber side. The curvature is such that the center of curvature lies substantially within a plane also including the transition portion (38) between the annular flexure portion and the inner attachment portion. The diaphragm is molded in this shape to avoid the creation of internal stress and permanent strain resulting from use of the diaphragm. Fabric (50) is positioned across the diaphragm closest to the air chamber side and being about one-third of the total thickness of the diaphragm from the air chamber side of the diaphragm.

公开(公告)号：EP1097304A4

公开(公告)日：2002-06-05

申请号：EP99933760

申请日：1999-07-07

申请人： WILDEN PUMP & ENG

发明人： KENNEDY DENNIS E ,  EBERWEIN DENNIS D ,  JACK ROBERT F

IPC分类号： F04B7/02 ,  F04B43/073 ,  F04B43/06 ,  F04B45/00

CPC分类号： F04B7/0241 ,  F04B43/0736 ,  Y10T137/2544

摘要： An air driven double diaphragm pump has two opposed pumping cavities (16, 18) with diaphragms (20, 22) extending across the cavities. An actuator housing (10) includes a control valve assembly (52) having a control valve (76) to direct pressurized air to one or the other of the dual pumping cavities (16, 18) and two relief valves (116) which cooperate with the pump shaft position to release air from one end or the other of the control valve (76) for the shifting thereof. Shuttle valve elements (160) are positioned between the control valve (76) and the pumping chambers (16, 18). The shuttle valve elements are slidably positioned within the valve (162) to move between extreme positions under the pressures within the input and the pumping cavity. In one extreme position, the pumping cavity is in communication with an exhaust (168) having a tapered passage. In the other, the exhaust is cut off and pressurized air is able to pass through a one-way valve (178, 182) in a passageway (174) through the shuttle valve (160) element to charge the pumping chamber.

公开(公告)号：EP0859912A4

公开(公告)日：1999-02-03

申请号：EP96936952

申请日：1996-10-25

申请人： WILDEN PUMP & ENG

发明人： DUNCAN GREGORY S

IPC分类号： F04B43/06 ,  F01L25/06 ,  F04B9/129 ,  F04B9/137 ,  F04B43/073 ,  F04B45/053 ,  F04B17/00

CPC分类号： F01L25/063 ,  F04B43/0736 ,  Y10S91/02 ,  Y10T137/86606

摘要： A pump having a center section (36) including an air valve (76) is arranged with air chambers to either side of an actuator housing. Diaphragms are associated with the air chambers to create enclosed cavities. Pumping chambers are positioned outwardly of the diaphragms and formed by intake and exhaust manifolds (20, 22). The actuator uses a pilot shifting shaft (62) which is shuttled by movement of the diaphragms. An air valve is controlled by the shuttle shifting shaft to control flow to and from the air chambers. The passageways from the air chambers to exhaust find the passage to the outlet being at least as restrictive to air flow as the remainder of the passageways. A diffuser includes a thin space between two surfaces, one of the surfaces being part of a porous block (96) of material.