4results about How to "Use quiet" patented technology

The utility model provides a kind of cultivation device for soil culture plant hydroponics transition, including top open box, detachably connected box cover, atomization induction component and jet flow oxygenation component.Box cover and box form culture space, box cover is equipped with through-hole and guide portion, for fixing plant and guiding root growth.Atomization induction component is located at the bottom of culture space, and mist drop is generated by atomization part of metal diaphragm and piezoelectric ceramic sheet, and high humidity induction of root system is realized by cooperating liquid absorbing cotton swab.Jet flow oxygenation component uses venturi jet pipe, and nutrient solution circulation is driven by pump body, and oxygen is increased and root secretion is removed using venturi effect.The device is controlled by two-stage environment synergistically, solves the problem of anoxic stress and secondary metabolite accumulation when soil culture plant is transplanted to hydroponics, and is suitable for scientific research and home horticulture scene.

The utility model discloses low-noise waste gas treatment equipment, which belongs to the technical field of waste gas treatment, and is characterized in that a fan noise reduction mechanism is communicated with a waste gas treatment equipment body, the fan noise reduction mechanism comprises a fan mounting part and a noise reduction part, the fan mounting part comprises a fan and a noise reduction sound insulation plate, the noise reduction and sound insulation plate wraps the fan, the fan installation part comprises an installation plate, a fixing plate, a first damping spring shock absorber, a second damping spring shock absorber and a sound absorption plate, the fan is fixedly installed on the installation plate, and the installation plate is installed on the fixing plate in a limited mode through the first damping spring shock absorber and the second damping spring shock absorber. The sound absorption plate is located between the mounting plate and the fixing plate, the first damping spring shock absorber and the second damping spring shock absorber reduce the noise generated by the fan by reducing the transmission vibration of the fan, the noise is reduced by reducing the vibration, the waste gas treatment equipment is more quiet to use, and noise pollution is reduced.

The utility model relates to a reagent stirring device and relates to the technical field of test tube stirring. The utility model discloses a reagent stirring device which comprises a base, the shell is mounted above the base, a mounting structure is arranged on the shell, a test tube can be inserted into the mounting structure, a cavity is defined by the shell and the base, and the cavity surrounds the mounting structure; the magnetic stirring rod is provided with two magnetic poles which are oppositely arranged in the length direction of the magnetic stirring rod, and the magnetic stirring rod is used for being placed in a test tube; the stator is mounted in the cavity and surrounds the mounting structure, and the stator is used for generating a driving magnetic field surrounding the mounting structure and can adjust the direction of the driving magnetic field so as to drive the magnetic stirring rod in the test tube to rotate. On the premise of stirring a reagent in a test tube, the size of the reagent stirring device can be reduced, and noise generated when the reagent stirring device works is reduced.

The silent air supply device of the sterile operating room comprises a flow guide disc, one side of the flow guide disc is communicated with a plurality of second threaded sealing connecting pipes, the flow guide disc is communicated with a first corrugated pipe through the second threaded sealing connecting pipes, the two ends of the first corrugated pipe are each provided with a first threaded sealing connector, and a second threaded sealing connector is arranged at the other end of the first corrugated pipe. One end of the first corrugated pipe is connected with an extension pipe in a threaded and sleeved mode through a first threaded sealing connector, and the outer side of the extension pipe is movably connected with a plurality of upper and lower hoops in a sleeved mode. Through the arrangement of a sound insulation cotton layer and a damping spring, vibration is compressed and buffered through the damping spring and an air cavity in the telescopic outer cylinder after the installation, so that the wind vibration effect is reduced, vibration sound production is reduced, sound insulation in the sound insulation cotton layer is matched, conduction of sound vibration is further reduced, and the sound insulation effect is improved. Meanwhile, due to the fact that the design is far away from a fan and air purifying equipment, the overall air supply effect is good, sound conduction is further reduced, and using is quite quiet.