48results about How to "To achieve the purpose of screening" patented technology

The invention discloses an iris diaphragm type reducing valve. The iris diaphragm type reducing valve comprises a valve shell, a control panel, N blades and a driving gear, wherein the control panel,the N blades and the driving gear are arranged in an inner cavity of the valve shell. The valve shell comprises a base plate and an end cover. A base plate body is annular, and a first protrusion integrally formed with the base plate body is arranged on the outer circumference of the base plate body. An end cover body is annular, and a second protrusion integrally formed with the end cover body isarranged on the outer circumference of the end cover body. The control panel is annular, the control panel and the base plate body or the end cover body are coaxial, the N blades are arranged betweenthe base plate and the control panel, and the control panel and the inner surface of the end cover are attached and pressed. The driving gear is arranged between the first protrusion and the second protrusion and is engaged with a gear structure on the control panel. The iris diaphragm type reducing valve has the beneficial effects that under the action of an external driving device, the controlpanel is matched with a first convex key to enable each blade to synchronously slide by taking a linear groove as a track, so that the hollow circle in the control panel is gradually covered or exposed, and the closure area of a pipeline is changed.

The invention relates to a drug screening biological chip with an air chamber. The drug screening biological chip with the air chamber is formed by two groups of sample injection ports, two cultivating areas, a commonly used air chamber, a waste liquor pool and a bended connecting channel, and is characterized in that structures starting from an air inlet, communicating an air chamber channel and an air chamber, ending at an air outlet are processed on an upper piece of the chip, and are arrayed in a connecting straight line; two groups of V-shaped sample injection channels and the two cultivating areas are symmetrically processed on a lower piece, corresponding to two sides of the connecting straight line of the upper piece; the waste liquor pool, a discharging channel and the outlet are processed on the lower piece, corresponding to the connecting straight line of the upper piece. According to the drug screening biological chip with the air chamber provided by the invention, the biological chip is utilized, a favorable cell culture basis is achieved, a microfluidic technology and a cell culture technology are combined so as to be applied in the field of drug screening through the improvement of the structure, and the same cell growth environment is provided on one chip, so that the aim that under the condition of not changing other variables, a category or dosage of a drug is changed singly, and drugs are screened through observing the change of physical signs such as cellular morphology under a drug effect is achieved.

The invention discloses a data screening method of a security monitoring system. The invention selectively stores security monitoring data images at intervals or images that meet requirements, which can well ensure the storage efficiency and memory utilization of the security monitoring system. Using the special data screening and processing technology of the present invention, the processing of image data is well realized, the monitoring image information can be well screened, and images with better definition can be selectively stored in the memory, which greatly saves While storing space, the purpose of screening valuable images is realized.

The invention discloses a rhombic roller type sieving machine, which relates to an artificial board sieving machine. A motor cabinet A (11) of an upper speed reduction motor (10) is arranged on one side of the upper part of a frame (4); a crankshaft of the upper speed reduction motor (10) is connected with one end of a material dividing propeller (1) which is arranged in a box body; the upper part of the material dividing propeller (1) is provided with a material inlet; the upper part of a material guiding plate (13) corresponds to the lower part of the box body of the material dividing propeller (1), while the lower part is extended to a part above at least one rhombic roller (24) of a sieving device consisting of a plurality of groups of rhombic rollers (24); the two ends of each rhombic roller (24) are provided with a bearing respectively; and a plurality of groups of granular material sieving mechanisms consisting of at least three rhombic rollers (24) are arranged in parallel in the frame (4). The rhombic roller type sieving machine is arranged between two pieces of equipment for delivering shaving materials mixed with glue to separate micelles or other large materials from the shaving materials after the materials are sieved so as to effectively improve the surface quality and appearance of finished products of artificial boards.