2results about How to "Meet different experimental needs" patented technology

The utility model discloses a centrifugal tube placing rack for water bath inactivation plasma, including the frame main body of integral cuboid, the frame main body includes bottom plate, top plate and four stand, four stand rectangular distribution between bottom plate and top plate, and the both ends of stand are fixedly connected with bottom plate and top plate respectively, the upper surface of bottom plate is equipped with a plurality of positioning recess for positioning the bottom part of centrifugal tube, and the elastic clamping plate of horizontal distribution is movably arranged between bottom plate and top plate, and the elastic clamping plate is provided with the limiting through -hole corresponding with each positioning recess, the adjacent two stand form the guide sliding slot along the vertical distribution, and the edge of elastic clamping plate is respectively with four stand side surface elastic abutment and elastic clamping plate and guide sliding slot sliding connection. The utility model improves the safety, adaptability of centrifugal tube placement in the process of plasma inactivation, can guarantee that plasma is heated evenly, has improved inactivation effect and efficiency.

The utility model relates to the technical field of physical experiment teaching aids, in particular to a simple harmonic motion experiment instrument, which comprises a base, a liquid spraying device, a support arranged on the base and a paper feeding device arranged on the base, the support comprises a cross rod, a first vertical rod and a second vertical rod, the first vertical rod and the second vertical rod are arranged on two opposite sides of the cross rod, and the cross rod is provided with a cycloid and connected with a pendulum ball. A gap exists between the lowest point of the swing ball in the natural state and the base, a spring is fixed to the first vertical rod and is horizontally placed in the natural state, one end of the spring is detachably connected with the swing ball, the liquid spraying device comprises a spraying pipe, and the liquid outlet end of the spraying pipe is fixedly connected with the swing ball; a spring oscillator experiment and a simple pendulum experiment are integrated on one device, so that students can conveniently compare two simple harmonic motion phenomena on the same platform, the essence and generality of the simple harmonic motion can be deeply understood, and the teaching effect is optimized. Meanwhile, through the detachable connection design, quick switching between a spring oscillator experiment and a simple pendulum experiment is facilitated, and different experiment requirements are met.