109results about How to "Low resistance）" patented technology

An aerating biologic filter pool with dual layers of filter material for treating sewage is characterized by that two filter materials with different granularities are used, middle discharge tubes with water holes are arranged between two filter layers, and air and water are alternatively used for flushing. Its advantages are both decarbonating and nitrifying functions, high effect, simple system and low cost.

The invention discloses a fish compound traditional Chinese medicinal preparation prepared from raw materials including rhubarb, acanthopanax, radix astragali, hawthorn and liquorice according a certain weight ratio. A method for preparing fish compound traditional Chinese medicinal preparation comprises the following steps of: A. washing and drying the rhubarb, the acanthopanax, the radix astragali, the hawthorn and the liquorice in the sun; B. respectively crushing and sieving the rhubarb, the acanthopanax, the radix astragali, the hawthorn and the liquorice to ensure the granularity reaches 140-200 mu; and C. weighing up the rhubarb, the acanthopanax, the radix astragali, the hawthorn and the liquorice according to the ratio and mixing and subpackaging after uniformly mixed to obtain the fish compound traditional Chinese medicinal preparation. The method has the advantages of feasibility, convenient operation, reasonable formulation and convenient use; traditional Chinese medicines have wide sources, low price, remarkable effects and no toxic or side effects; various components mutually act; and the invention simultaneously has two properties of nutrition and medicament, not only contains nutrient substances, but also has components with antibacterial activity and other bioactivities, can improve the metabolism of cultivated fishes, promote the growth and the development, improve the immunologic function, prevent and treat diseases and the like.

The invention discloses an integrated inspection device of axis parts, which consists of a granite base, a granite air floating measuring guideway and slipway, a granite air floating bearing guideway and slipway, a head frame, a tail frame, a plurality of measuring modules and a long grating ruler. Adopting the structure can achieve the integrated measurement to the axis parts, the integrated measurement of the axial dimensions of the axis parts and a plurality of position errors can be achieved by one clamping, and the inspection device has the advantages of simple structure, easy operation, and high precision.

The invention discloses an unmanned flying robot based on compressed air cold assistance launching, and belongs to the technical field of unmanned aerial vehicles and compressed air assistance cold launching. The unmanned flying robot uses compressed air as auxiliary power to carry out ejection take-off. After the unmanned flying robot lifts off, the power generated by a turbine jet engine is usedas the main thrust force to realize the horizontal attitude flight of the unmanned flying robot. The auxiliary electric drive is used as auxiliary power to realize the flight state change and vertical lifting and lowering of the unmanned flying robot. A load cabin inside the unmanned flying robot releases the loaded payload into the air and the ground through a folding mechanical arm, or grabs orrecovers ground objects through the folding mechanical arm. The unmanned flying robot can realize the free conversion flight of two speeds and two flight attitude, and the diversity of disaster relief tasks and the invisibility and survival rate in battlefields of unmanned flying robots are greatly improved.

The invention relates to a face spline of a toothed rim running in the circumferential direction around a rotation axis on a wheel-bearing arrangement for a driven wheel hub. The face spline is provided for play-free engagement with the counter-spline, facing the face spline and the teeth of the face spline have a wedge-like embodiment such that the geometrical lines of the face spline meet centrally at a common point on the rotation axis and the teeth thus run in the radial direction on the rotation axis.