公开(公告)号：US08505882B2

公开(公告)日：2013-08-13

申请号：US12734866

申请日：2008-12-25

申请人： Itaru Sakai ,  Takeshi Tsuji ,  Masanori Nagafuji ,  Kazutoshi Ohashi ,  Minoru Yamamoto

发明人： Itaru Sakai ,  Takeshi Tsuji ,  Masanori Nagafuji ,  Kazutoshi Ohashi ,  Minoru Yamamoto

IPC分类号： B01F3/04

CPC分类号： C02F3/20 ,  B01F3/04262 ,  B01F3/04269 ,  B01F2003/04177 ,  B01F2003/04297 ,  B01F2003/04361 ,  Y02W10/15

摘要： A diffuser apparatus which has fine pores is capable of achieving a high oxygen transfer efficiency and rarely becoming clogged so that the apparatus can be operated stably over a prolonged period. The diffuser apparatus includes: an aeration plate that is disposed in an aeration tank in order to release pressurized air, fed from a diffusing air feed pipe, as air bubbles from fine pores formed in an aeration plate surface; blow water feeder for feeding blow water into the diffusing air feed pipe; and an inserted pipe for discharging the blow water, fed into the diffusing air feed pipe, from the aeration plate.

摘要翻译： 具有细孔的扩散装置能够实现高氧传递效率并且很少变得堵塞，从而能够在长时间内稳定地操作该装置。 扩散装置包括：充气板，其设置在曝气池中，以从扩散空气供给管供给作为气泡从形成在曝气板表面的细孔的气泡释放的增压空气; 用于将吹入水送入扩散空气供给管的吹水给料器; 以及从曝气板排出供给到扩散空气供给管的吹入水的插入管。

公开(公告)号：US20100300965A1

公开(公告)日：2010-12-02

申请号：US12734866

申请日：2008-12-25

申请人： Itaru Sakai ,  Takeshi Tsuji ,  Masanori Nagafuji ,  Kazutoshi Ohashi ,  Minoru Yamamoto

发明人： Itaru Sakai ,  Takeshi Tsuji ,  Masanori Nagafuji ,  Kazutoshi Ohashi ,  Minoru Yamamoto

IPC分类号： C02F3/20

CPC分类号： C02F3/20 ,  B01F3/04262 ,  B01F3/04269 ,  B01F2003/04177 ,  B01F2003/04297 ,  B01F2003/04361 ,  Y02W10/15

摘要： The present invention provides a diffuser apparatus which has fine pores capable of achieving a high oxygen transfer efficiency and rarely becoming clogged so that the apparatus can be operated stably over a prolonged period. The diffuser apparatus according to the present invention includes: an aeration plate 4 that is disposed in an aeration tank 12 in order to release pressurized air, fed from a diffusing air feed pipe 3, as air bubbles from fine pores formed in an aeration plate surface 4a; blow water feeding means 5 for feeding blow water into the diffusing air feed pipe 3; and an inserted pipe 7 for discharging the blow water, fed into the diffusing air feed pipe 3, from the aeration plate 4.

摘要翻译： 本发明提供一种具有能够实现高氧转移效率并且很少变得堵塞的细孔的扩散器装置，从而可以在长时间内稳定地操作该装置。 根据本发明的扩散装置包括：曝气板4，其设置在曝气池12中，以从扩散空气供给管3释放加压空气，作为形成在曝气板表面中的细孔的气泡 4a; 用于将吹入水供给到扩散空气供给管3中的吹出水供给单元5; 以及从充气板4排出供给到扩散空气供给管3的吹入水的插入管7。

公开(公告)号：US5681256A

公开(公告)日：1997-10-28

申请号：US549259

申请日：1995-10-27

申请人： Masanori Nagafuji

发明人： Masanori Nagafuji

IPC分类号： B04B1/20 ,  H02P5/50 ,  B04B9/10

CPC分类号： H02P5/50 ,  B04B1/2016

摘要： A screw decanter centrifuge including a cylindrical bowl rotatable in one direction, a main drive motor coupled to the bowl for rotatably driving the bowl, a screw conveyor which is disposed concentrically in the bowl and which is rotatable in the same direction as the bowl at a differential rotation speed from the bowl, and an induction type screw conveyor motor for driving the screw conveyor. The differential rotation speed is changed in response to a carrying torque of the screw conveyor. An induction type screw conveyor motor is provided for driving the screw conveyor. The induction type screw conveyor motor has a shaft connected directly to, or coupled to, a shaft of the screw conveyor, and the induction type screw conveyor motor is controlled by a speed-torque controller. The speed-torque controller includes a speed controller for calculating the differential rotation speed based on rotations indicated by an induction motor tachometer for detecting a speed of the induction type screw conveyor motor, and on rotations indicated by a bowl tachometer for detecting a speed of the bowl. The speed-torque controller further includes a vector control inverter for independently controlling an exciting current and a torque current of the induction type screw conveyor motor based on a speed command value outputted from the speed controller and an actual speed of the induction type screw conveyor motor outputted from the induction motor tachometer.

摘要翻译： 一种螺杆式沉降式离心机，包括可在一个方向上旋转的圆柱形碗，连接到所述碗的主驱动马达用于可转动地驱动所述碗;螺旋输送机，其同心地设置在所述碗中，并且可在与所述碗相同的方向上旋转， 来自碗的差速转速以及用于驱动螺旋输送机的感应式螺旋输送机马达。 差速旋转速度响应于螺旋输送机的承载扭矩而改变。 设有感应式螺旋输送机用于驱动螺旋输送机。 感应式螺旋输送机马达具有直接连接到螺旋输送机的轴上或联接到螺旋输送机的轴的轴，感应式螺旋输送机由转速 - 转矩控制器控制。 速度转矩控制器包括速度控制器，用于根据用于检测感应式螺旋输送电动机的速度的感应电动机转速计所表示的转速以及用于检测感应式螺旋输送电动机的转速的碗式转速表所示的转速来计算差速转速 碗。 速度转矩控制器还包括矢量控制变换器，用于基于从速度控制器输出的速度指令值和感应型螺旋输送机电动机的实际速度，独立地控制感应式螺旋输送电动机的励磁电流和转矩电流 从感应电动机转速表输出。