3results about How to "Change physical properties" patented technology

This invention provides a device and method for simulating sediment resuspension under hydrodynamic action, relating to the field of sediment simulation. Addressing the problem that current wave-generating simulations of dynamic disturbances easily lead to the breakage of suspended particles, this invention simulates the action of water flow in a natural river by installing baffles within the water tank cavity to form multiple flow channels. The segmented circulation of water flow simulates the sediment resuspension process. When the grid blades agitate the water, the grid structure divides the water flow into multiple smaller streams, thus dispersing the force of the water flow. The originally concentrated impact force is dispersed to various parts of the grid, and when it is transmitted to the suspended particles, the magnitude and concentration of the force are significantly reduced, preventing the particles from breaking due to excessive external force.

The utility model discloses an electric thin-layer chromatography sample applicator, which relates to the technical field of analytical instruments and comprises a heating sample applicator, the upper surface of the heating sample applicator is fixedly connected with a supporting seat, the inner side wall of the supporting seat is fixedly connected with an auxiliary rod, the outer side wall of the supporting seat is fixedly connected with a motor, and the inner wall of the supporting seat is rotatably connected with a threaded rod. An output shaft of the motor penetrates through one end of the supporting seat to be fixedly connected with a threaded rod, the outer surface of the threaded rod is in threaded connection with a sample application arm, and the sample application arm is connected with a first electric push rod which is connected with a sample application nozzle. According to the utility model, a plurality of parallel strips can be formed by repeated sample application, an average value of detection results corresponding to the strips can be taken subsequently to reduce errors and improve the detection accuracy, and the heating temperature of the heater to the thin-layer plate can be adjusted through the controller, so that the performance of components of the same sample at different temperatures can be analyzed.

The utility model discloses a kind of automobile accessory endurance test device, including workbench, the upper end of the workbench is rotatably connected with driving rod, the upper end of the driving rod is coaxially fixedly connected with brake disc, the upper end of the workbench is installed with brake pad, the brake pad is matched with brake disc, the lower end of the workbench is fixedly connected with motor. The utility model structure is reasonable, by setting special heat dissipation mechanism, using the power of motor, by the transmission of synchronous pulley, synchronous belt, vertical rod, bevel gear (first bevel gear, second bevel gear) and cross bar, drive fan blade rotation to produce airflow, brake disc and brake pad in testing process are cooled, effectively avoid the high temperature change brake disc and brake pad's physical property due to friction, ensure the accuracy of test result, improve the reliability of test data, can truly reflect the endurance condition of brake disc and brake pad in actual use.