4results about How to "Improve quality level" patented technology

The application relates to the field of microfluidic technology, in particular to a three-dimensional paper-based rotary microfluidic device, which comprises a first functional layer, a second functional layer and a third functional layer which are stacked from top to bottom, a rotating shaft is arranged on the upper surface of the third functional layer, the first functional layer is provided with a first shaft hole allowing rotation along the rotating shaft, and the second functional layer is provided with a second shaft hole allowing rotation along the rotating shaft; the first functional layer is provided with a sample inlet hole and an adsorption block at the bottom; the second functional layer is provided with a sample receiving groove matched with the sample inlet hole and a sample separation and enrichment hole matched with the adsorption block, the sample receiving groove is connected with the sample separation and enrichment hole through a sample flow groove, and the sample separation and enrichment hole is crossly provided with a paper-based bearing sheet for separating samples; and the third functional layer is provided with a sample analysis block matched with the sample separation and enrichment hole. The device can simultaneously perform the steps of sample feeding, impurity analysis, flow separation, separation and enrichment and detection on multiple samples.

The utility model discloses a high accuracy copper plate strip processing's double -sided face milling machine, including device main part, the device main part from left to right and be located copper plate strip's position install first feeding roller, lower milling mechanism, second feeding roller, upper milling mechanism and third feeding roller in proper order, lower milling mechanism and upper milling mechanism reverse setting, lower milling mechanism includes back roller, in side guide plate, in side pressure wheel, milling cutter, bearing seat up and down fixed establishment, out side guide plate, out side pressure wheel, bearing seat left and right fixed establishment and dust absorption cylinder. The utility model discloses a high accuracy copper plate strip processing's double -sided face milling machine, solves the problem that the existing equipment is unstable when processing copper plate strip, and the vibration is big, and the heat output is high, improves copper plate strip's processing precision and quality, prolongs the service life of tool, reduces the processing cost, provides high -quality raw material for the next process, improves the finished product rate of rolling and the quality grade of product.

This invention relates to a diaphragm (12) for a pressure measuring device, comprising a resilient circular diaphragm (120) for sealing one side of the pressure measuring device (10), thereby forming a gap between the interior and exterior of the pressure measuring device; wherein the resilient circular diaphragm (120) is horizontally fixed to the surface of the chamber of the pressure measuring device (10) via a peripheral portion of the diaphragm (12) away from the center; and the resilient circular diaphragm (120) is flat when there is no pressure difference between the pressures acting on the inner surface (121) and the outer surface (122), respectively. The invention also relates to a pressure measuring device and an extracorporeal circulation tubing, which are manufactured using simple and reliable technology, saving materials and manufacturing costs while maintaining accurate pressure measurement.

This invention provides a ground roller inspection station, comprising two ground rollers for supporting and conveying a steel coil, an uncoiling and rewinding device for opening the steel coil, an inspection table for inspecting the surface of the strip, and a guide roller that cooperates with the uncoiling and rewinding device to clamp and feed the strip. The uncoiling and rewinding device is located between the ground rollers and the inspection table. The ground roller closer to the uncoiling and rewinding device is arranged on a base together with the uncoiling and rewinding device. The guide roller is positioned close to the inspection table. The ground roller inspection station also includes a first driving device for driving the uncoiling and rewinding device to swing between the steel coil and the guide roller. A transition guide plate for strip conveying is provided between the ground roller closer to the uncoiling and rewinding device and the guide roller. This invention also provides an inspection method for the ground roller inspection station.