119results about How to "Waste of energy" patented technology

Provided is a double-headed bolt assembling and disassembling tool. A first wrench is fixed at the tail end of the tool, a locking rod is sleeved with a nut and fixed in a feather edge outer sleeve through the nut, a second wrench is fixed at the outer end of the side, near the first wrench, of the feather edge outer sleeve, and a pre-tightening nut is arranged in the other side of the feather edge outer sleeve; the head end of the locking rod penetrates through the pre-tightening nut and is fixed in the pre-tightening nut through a straight pin, a spring is arranged in the feather edge outer sleeve, one end of the spring abuts against the nut, the other end of the spring abuts against the pre-tightening nut, a convex edge clamping nut is arranged on the pre-tightening nut, a hole check ring is arranged on the convex edge clamping nut, and the convex edge clamping nut and the hole check ring are arranged in the end of the feather edge outer sleeve. According to the double-headed bolt assembling and disassembling tool, the assembly is convenient and reliable, the structure is simple, the disassembly is flexible, use is easy, the manufacturing cost is low, the labor intensity can be greatly reduced, the tool is suitable for operation in narrow and special space, parts can be replaced quickly, and double-headed bolts with different diameters can be acted.

This invention relates to control method and apparatus of wind machine for plant frost protection, and belongs to the domain of agro-meteorological disaster monitoring and control. Existing wind machines for plant frost protection only rely on critical damage temperature or wind speed as a condition to start. If there is no thermal inversion, operation of the wind machine will aggravate freezing injury to plants. If the strength of thermal inversion is weak, the effect will be minimal The feature of this invention is that when temperature at the plant canopy is lower than the critical damage temperature of a certain plant and temperature difference between the top and bottom of the thermal inversion layers exceeds set threshold, wind machine will start automatically. Otherwise it will remain off. The control apparatus mainly consists of sensor 5 at the top of thermal inversion layer, sensor 7 at bottom of thermal inversion layer, and controller 4. This invention of the control of frost protection wind machine ensures rational and effective operation and avoids aggravated freezing risk due to misuse of energy and incorrect operation.

An exemplary server rack includes a box adapted for receiving a plurality of servers therein, a plurality of pivoting members pivotally connected to the box; and a plurality of covers fixed to the pivoting members respectively. The box includes a front board and a back board opposite to the front board. The front board and the back board both define a plurality of though holes adapted for airflow to pass therethrough. Each cover is operable to pivot relative to the box via the corresponding pivoting member, and thereby cover some of the through holes of the front board of the box.

The invention provides a melt-blown non-woven filter material, which is prepared by the following method: provide a polylactic acid raw material; dissolve the polylactic acid raw material into a DMF solvent; the polylactic acid electrospinning layer is prepared by electrospinning method using polylactic acid spinning solution as raw material; provide polylactic acid raw material again and provide polyphenylene sulfide raw material; and perform surface treatment. Polylactic acid raw material, polyphenylene sulfide raw material, nano-titania powder are mixed well with the processing assistant to obtain a mixture; the mixture is extruded into modified polylactic acid particles; then a modified polylactic acid melt-blown fiber layer is formed on the polylactic acid electrospinning layer by using the melt-blown method. The invention innovatively implements loading nano-titania particles into the synthetic fiber, which makes the fiber material presented in this invention not only have filtering effects, but also have photocatalytic ability.