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5 results about "High water content" patented technology

High Water Content Fluids (HFA) HFA or high water content fluids (HWCF’s) are hydraulic fluids that combine the excellent fire resistant properties of water with lubrication and corrosion protection from an additive concentrate.

Bundling machine making cotton straw bundle used for processing high water content mud and novel dredger fill

ActiveCN105145010AEasy to feedTake advantage of strength and stiffnessBalingSoil preservationLeft halfReciprocating motion
The invention relates to a bundling machine making cotton straw bundles used for processing high water content mud and novel dredger fill; the bundling machine comprises a feeding mechanism, a bundle forming room and a binding mechanism; the bundle forming room comprises a left half die and a right half die; the left and right half dies can be matched to form a cylinder straw bundle forming zone; inner surfaces of the left and right half dies are respectively provided with a plurality of rollers; the roller has a circumferential groove, and the grooves of the rollers are spliced to form a guide rail; a packing tape of the binding mechanism runs along the guide rail; two ends of the straw bundle forming zone are respectively provided with a front cover and a rear cover; the front cover can make axial reciprocating motions along the straw bundle forming zone; the rear cover can rotate to open/close, and serves as a discharge door of the straw bundle forming zone; the center positions, at the opposite sides, of the front cover and the rear cover are provided with bosses and concaves matched in shape; the bundling machine can very conveniently make cylinder cotton straw bundles, thus reducing production cost.
Owner:冠县民富物业管理有限公司

Tunnel boring method

InactiveCN1308570CDrilling compositionTunnelsPolyethylene oxideActive agent
A process of boring a tunnel using an earth-pressure balance shield boring tunnelling machine having a cutting head, an excavation chamber for soil removed by boring and conveying means for removal of said soil from the excavation chamber; wherein there is injected into a stratum being bored at the cutting head a foamed aqueous solution, characterised in that (a) the aqueous solution contains two essential components which are (i) a sulphate- or sulphonate-containing anionic surfactant, and (ii) beta -naphthalene sulphonate-formaldehyde condensate; and in that (b) there is applied to the soil removed by boring in at least one of the excavation chamber and the conveyor a second aqueous solution containing essentially a high molecular weight polyethylene oxide and optionally a sulphate- or sulphonate-containing anionic surfactant. The process allows easy removal of soil from the cutting head to the excavation chamber and from the excavation chamber out of the machine. It is particularly effective for sticky soils with high proportions of clay and a high water content.
Owner:CONSTR RES & TECH GMBH
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