68results about How to "Reasonable cost performance" patented technology

The invention provides an Al 2 o 3 The preparation method of porous ceramics includes mud preparation, grouting molding and firing, and is characterized in that: 70-80wt% of alumina powder, 10-15wt% of clay, spodumene and cooked talc at a ratio of 2-18:1 Mix 4-19wt% of binder and 0.5-1wt% of mud additives with water at a mass ratio of ~2, grind in a ball mill to prepare mud, and then add chopped polycrystalline Al 2 o 3 1-10wt% of ceramic fiber, 7-15wt% of pore-enhancing agent, 0.5-1wt% of debonding agent are stirred and mixed evenly, wherein the polycrystalline Al 2 o 3 The ceramic fiber has a diameter of 4-5 μm and an aspect ratio in the range of 1000:1-2000:1, and then casts it in a mold and finally fires it. chopped polycrystalline Al 2 o 3 The amount of ceramic fiber and pore-enhancing agent can be changed according to the different strength properties and pore diameter requirements of the product. The preparation method is simple in process, convenient in operation, high in production efficiency and high in yield, and is especially suitable for large-scale industrial production. It has good performance and is suitable for the preparation of ceramic filter elements for high-temperature coal (smoke) gas filters.

An antitheft lock on the well cover comprises key, lock pin and tongue, with the lock pin fastened on the lower surface of the well cover, the key going to the lock hole through the hole on the well cover, and the tongue, under the control of the key, connected to the lock pin. It solves the theft issue of the well cover with low cost, safety. It can also be used to modify the existing well covers.

The invention relates to a water quality integrated bio-toxicity on-line automatic analyzer and a method for using the same. The analyzer is characterized in that the interior of the analyzer is provided with two temperature control areas, wherein one temperature area at a temperature of between 0 and 4 DEG C mainly comprises a freezing dry powder storing device, a sterilizing device, a freezing dry powder definite quantity control device and a nutrient solution storing device; and the other temperature area at a temperature of between 20 and 25 DEG C mainly comprises a photogenic bacterium activating reaction storing kettle, a buffering liquid storing device, a regulation and control device for water to be tested, a clear water flow rate transmission and control pipeline, a delicate testing device and a rotary long shaft fixing round plate in a dark box, wherein a test tube is assembled on the round plate; the dark box cover is connected with the photogenic bacterium activating reaction storing kettle, the buffering liquid storing device, the control device for water to be tested and an analyzer externally connected washing pipe through the flow rate transmission and control pipeline; and the interior of the dark box is provided with a photoelectric probe. The analyzer has the advantages of on-line test achievement for water quality integrated bio-toxicity, simple operation and high automation degree in the aspect of maintenance, and can obtain reasonable cost performance and be suitable for the on-line monitoring of abominable environment. The analyzer can be used as a single machine, and can also be used as a front-end product of a monitoring network system.

The invention discloses a concrete crack repairing agent with low viscosity and a dynamic load structure. The concrete crack repairing agent comprises a component A and a component B, wherein the weight ratio of the component A to the component B is 3 to 0.8-1.2; in terms of weight, the component A comprises the following components: 40.0-70.0 parts of bisphenol A epoxy resins, 20.0-40.0 parts of hydrogenated bisphenol A epoxy resins, 8.0-23.0 parts of reactive diluents, 1.0-5.0 parts of a toughening agent and 0.5-1.5 parts of antifoaming agents; and the component B comprises the following components: 45.0-60.0 parts of acylamino amine hardeners, 20.0-30.0 parts of aliphatic amine hardeners, 2.5-5.0 parts of accelerants, 4.5-18.0 parts of coupling agents and 1.0-2.5 parts of anti-aging agents. The concrete crack repairing agent with the low viscosity and the dynamic load structure is mainly used for projects of repairing cracks caused by various dynamic load fatigue functions.

The invention discloses a traversing remote control spanning vehicle, comprising a moving ladder, a table surface, a frame and a moving driving mechanism; the moving driving mechanism is arranged below the frame; the table surface is fixedly arranged on the frame; the traversing remote control spanning vehicle also comprises a sliding contact line device, a track removing device and a centralisedlubrication device, which are sequentially fixedly arranged on the frame; the moving driving mechanism is arranged in a direction vertical to the length of the frame; the table surface comprises a panel, a plurality of steel rails and a heat preservation and insulation layer; the panel is fixedly welded on the frame; the steel rails are intermittently arranged on the panel; a cushion block is arranged between the lower surface and the panel; the heat preservation and insulation layer is fixedly arranged on a gap on the panel between the steel rails; the upper surface of the steel rails is higher than the heat preservation and insulation layer. The traversing remote control spanning vehicle solves the requirement of transporting the high-temperature plank stuff by the table surface structure with the heat preservation and insulation layer, and conveniently realizes the dual-linking structure so as to meet the transportation of ultra-long high-temperature plate blanks.