33results about How to "Achieve alternation" patented technology

The invention provides a pull-type metal wall surface working wall-climbing robot. The pull-type metal wall surface working wall-climbing robot comprises a pulling mechanism and a climbing mechanism. The climbing mechanism is suspended on a metal wall surface by the pulling mechanism through pulling ropes. The horizontal displacement of the robot is completed through walking of a pulling car, the vertical displacement of the robot is completed through the pulling ropes and a rack and pinion mechanism, an obstacle crossing function of the robot is achieved through up-down displacement of a foot mechanism, and an adsorption function of the robot is achieved through electromagnets. The pull-type metal wall surface working wall-climbing robot has the characteristics of being large in load capacity, high in obstacle crossing capacity and the like.

The invention discloses an intelligent blackboard, belongs to the technical field of efficient utilization of mechanical blackboards, and aims at solving the problems that two blackboards cannot be alternately used and cannot be automatically erased. The intelligent blackboard comprises an erasing system and a switching system, wherein the switching system and the erasing system are fixed on the wall respectively; the erasing system comprises a moving unit and a centrifugal telescopic unit; the moving unit enables a long rod erasing head to move in the vertical and horizontal directions; the centrifugal telescopic unit enables the long rod erasing head to perform telescopic movement on the blackboard in the normal direction; the switching system enables the positions of a front-end blackboard and a rear-end blackboard to be switched; the long rod erasing head can be in contact with the front-end blackboard and the rear-end blackboard. The intelligent blackboard has the advantages that the two blackboards can be alternated, and the fixed area of the blackboard can be automatically erased by virtue of the cooperation of a singlechip microcomputer and peripheral equipment; the blackboard can be quickly, sanitarily, accurately and efficiently erased, and the maximum using efficiency is obtained.

The invention discloses a dry and wet type cyclic magnetic separation method. A dry type magnetic separation method comprises the steps of a, grinding ores; b, performing pre-screening; c, performing reducing roasting; d, feeding materials; e, performing magnetic separation through an upper magnetic separation barrel; f, enabling the upper magnetic separation barrel to rotate to clean a storehouse; g, performing magnetic separation through a lower magnetic separation barrel; h, enabling the lower magnetic separation barrel to rotate to clean the storehouse; i, performing cyclic reciprocating magnetic separation; and j, rotating to discharge slag. A wet type magnetic separation method comprises the steps of a, cleaning impurities; b, performing filtering and pre-screening; c, feeding materials; d, performing magnetic separation through an upper magnetic separation barrel; e, enabling the upper magnetic separation barrel to rotate to clean a storehouse; f, performing magnetic separation through a lower magnetic separation barrel; g, enabling the lower magnetic separation barrel to rotate to clean the storehouse; h, performing cyclic reciprocating magnetic separation; and i, rotating to discharge slag. The device adopts a unique double-barrel circulating structure; when the circulating structure rotates to different positions under the driving of a driving device, river sand or metal mortar can be cyclically separated between the two hollow barrels. The whole process of the method is automatically controlled by a circuit, so that the waste of human resources is reduced, and the problems that a separation method is complicated, a separation process is long and the like are solved.

The invention discloses a wet-type circulation magnetic separation method which includes the following steps of a. washing and impurity removing; b. filtering and pre-screening; c. feeding; d. first-time magnetic separation; e. first-time opening and closing of (crescent) slurry leaking holes; f. first-time rotating spraying water recycling; g. second-time magnetic separation; h. second-time opening and closing of (crescent) slurry leaking holes; i. second-time rotating spraying water recycling; j. circulation reciprocating magnetic separation; k. rotating slagging; l. reverse floatation. The device adopts a unique double-cone circulation structure. When the circulation structure rotates to different positions under the drive of the driving device, and river sand or metal slurry can be separated in the two hollow cones in a circulation mode. The whole process is automatically controlled by a circuit, human resource waste is reduced, the problems of complex separation method and long separation process are solved, and the effectiveness of the magnetic separation is improved.