公开(公告)号：US4212730A

公开(公告)日：1980-07-15

申请号：US887498

申请日：1978-03-17

Applicant: George C. Brooks ,  James R. Brown

Inventor： George C. Brooks ,  James R. Brown

IPC: B03D1/14

CPC classification number: B03D1/028 ,  B03D1/1431 ,  B03D1/1456

Abstract: Apparatus for utilizing the flotation separation process employs first and second chambers, the first chamber being positioned above the second chamber so that the tailings from the first chamber may be gravity fed into the second chamber. Both chambers include a plurality of spaced, air bubble infusers, each of which are fed by air and water pipes extending across the corresponding chamber. A plug and throat arrangement in a bulkhead between the first and second chambers allows control over the flow of tailings from the first chamber into the second chamber. Each infuser is designed so as to provide an even spread of the air bubbles emitted therefrom.

Abstract translation: 利用浮选分离工艺的装置采用第一和第二腔室，第一腔室位于第二腔室的上方，使得来自第一腔室的尾矿物质可被重力送入第二腔室。 两个腔室包括多个间隔开的气泡注入器，每个气泡注入器都由贯穿相应的腔室的空气和水管进料。 在第一和第二室之间的舱壁中的塞子和喉部布置允许控制尾矿从第一室流入第二室的流动。 每个输注器被设计成提供从其发射的气泡的均匀分布。

公开(公告)号：US4209837A

公开(公告)日：1980-06-24

申请号：US921538

申请日：1978-07-03

Applicant: James R. Brown

Inventor： James R. Brown

IPC: G05B19/02 ,  G05B1/02 ,  G05B21/02 ,  G05D23/20 ,  G05D23/24 ,  G06G7/66

CPC classification number: G06G7/66 ,  G05B1/02 ,  G05B21/02 ,  G05D23/1902 ,  G05D23/1913 ,  G05D23/24 ,  Y10T307/484 ,  Y10T307/957

Abstract: There is disclosed a circuit for generating an error voltage which is proportional to the difference between a desired value of a physical parameter and the actual value of the physical parameter. The circuit operates by alternately switching the current from a source through a fixed reference resistor and a variable resistor, the resistance value of which changes as a function of the physical parameter to be controlled. The current is switched between the two resistors so that the average voltage generated across the variable resistor would be equal to the average voltage generated across the fixed resistor if the physical parameter had the desired value. By determining the difference between the average voltages across the resistors, the error voltage can be generated for controlling the physical parameter.

Abstract translation: 公开了一种用于产生与物理参数的期望值与物理参数的实际值之间的差成比例的误差电压的电路。 该电路通过交替地切换来自源极的电流通过固定参考电阻器和可变电阻器，其电阻值作为要控制的物理参数的函数而变化。 电流在两个电阻之间切换，使得如果物理参数具有所需值，则跨可变电阻产生的平均电压将等于固定电阻上产生的平均电压。 通过确定电阻器两端的平均电压之差，可以产生误差电压来控制物理参数。