-
公开(公告)号:US4971778A
公开(公告)日:1990-11-20
申请号:US508891
申请日:1990-04-12
IPC分类号: C01B25/027 , C01B25/18 , C01B25/238 , C01B25/24
CPC分类号: C01B25/24 , C01B25/027 , C01B25/18 , C01B25/238
摘要: For working up concentrated, preferably partially condensed phosphoric acid which is contaminated with organic components, the phosphoric acid is first thoroughly mixed with fine-grained sand in a weight ratio of (0.5 to 1.5):1. Then, to neutralize the mixture, a basic, oxygen-containing calcium compound is added, while the thorough mixing is continued, until a 10% aqueous suspension of the mixture to which the calcium compound has been added has a pH between 5 and 11. Finally, the mixture which contains the calcium compound is commminuted after cooling.
摘要翻译: 为了处理被有机成分污染的浓缩的,优选部分缩合的磷酸,磷酸首先以(0.5-1.5 ):1的重量比与细粒砂完全混合。 然后,为了中和混合物,加入碱性含氧钙化合物,同时继续充分混合,直到加入钙化合物的混合物的10%水悬浮液的pH为5至11。 最后,冷却后将含有钙化合物的混合物粉碎。
-
公开(公告)号:US6039072A
公开(公告)日:2000-03-21
申请号:US882241
申请日:1997-06-25
申请人: Folkhard Holzel , Manfred Kramer , Jens Tiedemann
发明人: Folkhard Holzel , Manfred Kramer , Jens Tiedemann
CPC分类号: F16K17/082 , F16K17/0433 , F16K17/0493 , Y10T137/7842 , Y10T137/7846 , Y10T137/7867 , Y10T137/7936
摘要: A safety valve arrangement for an installation operating with a pressure medium has a pressure medium input and a pressure medium output connected by a valve. The valve comprises a valve seat and a valve closing element. The valve closing element is moveable between an open position and a closed position and has an active surface that is subjected to the pressure medium in the opening direction of the valve. The valve closing element also has an auxiliary surface that is subjected to the pressure medium in the opening direction of the valve only when the valve closing element is lifted from the valve seat. A spring arrangement holds the valve closing element closed and the valve closing element moves from a closed position to an open position when the pressure medium acting upon the valve closing element is greater than the opposing force of the spring arrangement acting upon the valve closing element. The safety valve also has an auxiliary valve which also connects the pressure medium input to said pressure medium output. The auxiliary valve is moveable from an open position to a closed position. The spring arrangement also holds the valve closing element of the auxiliary valve closed. The valve closing element of the auxiliary valve is opened when the force of the pressure medium acting upon the valve closing element is greater than the opposing force of the spring arrangement acting upon the auxiliary valve closing element. The safety valve arrangement may also have a choke located between the valve and the pressure medium output which throttles the flow of the pressure medium.
摘要翻译: 用于使用压力介质操作的安装的安全阀装置具有通过阀连接的压力介质输入和压力介质输出。 阀包括阀座和阀关闭元件。 阀关闭元件可以在打开位置和关闭位置之间移动,并且具有在阀的打开方向上经受压力介质的有效表面。 阀关闭元件还具有辅助表面,仅在阀闭合元件从阀座提升时才经过阀的打开方向的压力介质。 当作用在阀关闭元件上的压力介质大于作用在阀关闭元件上的弹簧装置的反作用力时,弹簧装置保持阀关闭元件关闭并且阀关闭元件从关闭位置移动到打开位置。 安全阀还具有辅助阀,其也将压力介质输入端连接到所述压力介质输出端。 辅助阀可以从打开位置移动到关闭位置。 弹簧装置还保持辅助阀的关闭阀关闭。 当作用在阀关闭元件上的压力介质的力大于作用在辅助阀关闭元件上的弹簧装置的相对力时,辅助阀的阀关闭元件打开。 安全阀装置还可以具有位于阀和压力介质输出之间的扼流圈,其节流压力介质的流动。
-
公开(公告)号:US06257838B1
公开(公告)日:2001-07-10
申请号:US09418900
申请日:1999-10-15
IPC分类号: F04B4900
CPC分类号: F04B49/16 , F04B39/08 , F04B2203/0604 , F04B2203/0605
摘要: A gas compressor for vehicle braking systems controlled by compressed air can be operated under load or in idle operation. In idle operation, no compressed air is produced. In operation under load, the gas compressor produces compressed air as required by the pressure medium installation. During prolonged operation of the gas compressor at a relatively high operating speed, for example, during travel on super-highways, the power consumption can be decreased and thereby also the production amount of the gas compressor, without having to switch the gas compressor over into idle operation. A clearance volume of less volume than the nominal volume of the gas compressor is provided which can be connected via a valve to the compression chamber of the gas compressor, thereby making it possible to enlarge the compression volume. In addition, a process for the control of the auxiliary valve takes into account different operating magnitudes of the gas compressor and other elements of the vehicle.
摘要翻译: 用于由压缩空气控制的车辆制动系统的气体压缩机可以在负载或空转操作下操作。 在空闲操作中,不产生压缩空气。 在负载运行中,气体压缩机根据压力介质的安装要求生产压缩空气。 在比较高的运行速度下,例如在超高速公路行驶期间,在气体压缩机的长时间运转中,能够降低功率消耗,从而能够降低气体压缩机的生产量,而不必将气体压缩机转换成 空闲操作。 提供了比气体压缩机的额定容积小的体积的间隙体积,其可以经由阀连接到气体压缩机的压缩室,从而可以扩大压缩体积。 此外,用于控制辅助阀的过程考虑了气体压缩机和车辆的其它元件的不同操作量。
-
公开(公告)号:US5639224A
公开(公告)日:1997-06-17
申请号:US270156
申请日:1994-07-01
CPC分类号: F04B49/022 , F04B49/08 , Y10S251/901 , Y10T137/7891
摘要: The inventive device produces compressed gas. It is provided with a compressor, wherein the compressor has a compression chamber (25), a suction chamber (10) and a pressure chamber (6). The compression chamber (25) can be connected to the suction chamber (10) via a suction valve (12, 21, 54) and to the pressure chamber (6) via a pressure valve (3). When the receiving-end pressure reaches a predetermined level, the pressure chamber (6) is connected to a compressed-air supply container (44). This connection is via a device for the discontinuation of compressing action (23, 51). In addition, the pressure in the pressure chamber (6) is monitored by a control valve (26), which is a sensing device with a control output (38). The sensing device (26) is designed to produce a control signal at the control output (38), when the pressure in the pressure chamber (6) or compression chamber (25) of the compressor reaches or exceeds a predetermined value. The control output (38) of the sensing device (26) is connected to a control input (15, 52) of a cut-off device for the discontinuation of the compressing action (23) or a switchable coupling (51). The control signal at the control output (38) of the sensing device (26) actuates the cut-off devices (23, 51), thereby discontinuing the compressing action.
摘要翻译: 本发明的装置产生压缩气体。 设置有压缩机,其中压缩机具有压缩室(25),吸入室(10)和压力室(6)。 压缩室25可以经由吸入阀12,21,54连接到吸入室10并通过压力阀连接到压力室6。 当接收端压力达到预定水平时,压力室(6)连接到压缩空气供应容器(44)。 这种连接是通过用于停止压缩动作的装置(23,51)来实现的。 另外,通过作为具有控制输出(38)的感测装置的控制阀(26)来监视压力室(6)中的压力。 当压缩室(6)或压缩室(25)中的压力达到或超过预定值时,感测装置(26)设计成在控制输出(38)处产生控制信号。 感测装置(26)的控制输出(38)连接到用于停止压缩动作(23)或可切换联轴器(51)的截止装置的控制输入(15,52)。 感测装置(26)的控制输出(38)处的控制信号驱动截止装置(23,51),从而中断压缩动作。
-
-
-