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5 results about "Viscous liquid" patented technology

In condensed matter physics and physical chemistry, the terms viscous liquid, supercooled liquid, and glassforming liquid are often used interchangeably to designate liquids that are at the same time highly viscous (see Viscosity of amorphous materials), can be or are supercooled, and able to form a glass.

Method for measuring viscous mud-flow internal flow velocity and impact force spatial distributions

ActiveCN106446411AGeometric CADHuman health protectionPhysicsViscous liquid
Aiming at solving the problems that flow velocity and impact of any point in any section of mud-flow cannot be measured in the prior art, the invention first provides a method for measuring viscous mud-flow internal flow velocity and impact force spatial distributions. The method for measuring flow velocity is based on the viscous mud-flow body Bingham model and the scour-and-fill balance principle; first, setting any section I-I, determining values such as h0, h(x), xa, xd, xb, xc of the section through the trial method; then calculating the flow depth of a mud-flow calculation infinitesimal surface at any point on the section according to formula 1; and finally substituting h into the Bingham-model-based viscous mud-flow flow velocity distribution formula to obtain flow velocity of the point. By means of the method for measuring flow velocity at any position in any section of mud-flow, the method for measuring spatial distribution of viscous mud-flow impact force is further obtained. The calculation result of the method has high accuracy, which can be applied in real design for viscous mud-flow prevention and control engineering. The measurement method is clear in thinking and simple in calculating, which is an improvement of the present prevention and control engineering design method which is based on uniform distribution.
Owner:INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI

Claw type vacuum pump

InactiveCN110005608AGuaranteed long-term useAchieve suctionRotary/oscillating piston combinations for elastic fluidsSealing arrangement for pumpsViscous liquidFuel tank
The invention belongs to the field of vacuum equipment, and particularly relates to a claw type vacuum pump. The claw type vacuum pump comprises a pump body, sealing plates at the two ends of the pumpbody, a pump cavity formed through the arrangement of the pump body and the two sealing plates in a surrounding manner, two rotor shafts which transversely penetrate through the pump cavity and are located on the same horizontal plane, and two claw type rotors positioned in the pump cavity; the two rotor shafts are synchronously and reversely rotated, and the two rotors are arranged on the two rotor shafts and are in conjugate engagement with the two rotor shafts; end covers are installed on the outer side of the sealing plates to form an oil tank; clearances of 0.20-0.25 mm are left betweenthe rotors and the sealing plates on both sides; and a pump inlet and a pump outlet are formed in the upper end and the lower end of the pump body respectively and are opposite to the meshing parts ofthe two claw type rotors. According to the claw type vacuum pump, the rotors can be effectively prevented from being locked, the whole pump can easily deal with complex working conditions of dust, viscous substances, easy carbonization and easy coking, and normal work is ensured; and the claw type vacuum pump can be used as vacuum obtaining equipment, can also be used for conveying gas, viscous liquid and the like, and has various functions.
Owner:ZIBO ZEYI VACUUM EQUIP
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